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

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2015 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * The full GNU General Public License is included in this distribution in
  19  * the file called "COPYING".
  20  *
  21  * Contact Information:
  22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  ******************************************************************************/
  26
  27 /* Local includes */
  28 #include "i40e.h"
  29 #include "i40e_diag.h"
  30 #ifdef CONFIG_I40E_VXLAN
  31 #include <net/vxlan.h>
  32 #endif
  33
  34 const char i40e_driver_name[] = "i40e";
  35 static const char i40e_driver_string[] =
  36                         "Intel(R) Ethernet Connection XL710 Network Driver";
  37
  38 #define DRV_KERN "-k"
  39
  40 #define DRV_VERSION_MAJOR 1
  41 #define DRV_VERSION_MINOR 3
  42 #define DRV_VERSION_BUILD 34
  43 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
  44              __stringify(DRV_VERSION_MINOR) "." \
  45              __stringify(DRV_VERSION_BUILD)    DRV_KERN
  46 const char i40e_driver_version_str[] = DRV_VERSION;
  47 static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
  48
  49 /* a bit of forward declarations */
  50 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  51 static void i40e_handle_reset_warning(struct i40e_pf *pf);
  52 static int i40e_add_vsi(struct i40e_vsi *vsi);
  53 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  54 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
  55 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  56 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  57 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  58 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  59 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  60
  61 /* i40e_pci_tbl - PCI Device ID Table
  62  *
  63  * Last entry must be all 0s
  64  *
  65  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  66  *   Class, Class Mask, private data (not used) }
  67  */
  68 static const struct pci_device_id i40e_pci_tbl[] = {
  69         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  70         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  71         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_A), 0},
  72         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  78         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
  79         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  80         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  81         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  82         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  83         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  84         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
  85         /* required last entry */
  86         {0, }
  87 };
  88 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  89
  90 #define I40E_MAX_VF_COUNT 128
  91 static int debug = -1;
  92 module_param(debug, int, 0);
  93 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  94
  95 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  96 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  97 MODULE_LICENSE("GPL");
  98 MODULE_VERSION(DRV_VERSION);
  99
 100 /**
 101  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 102  * @hw:   pointer to the HW structure
 103  * @mem:  ptr to mem struct to fill out
 104  * @size: size of memory requested
 105  * @alignment: what to align the allocation to
 106  **/
 107 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 108                             u64 size, u32 alignment)
 109 {
 110         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 111
 112         mem->size = ALIGN(size, alignment);
 113         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 114                                       &mem->pa, GFP_KERNEL);
 115         if (!mem->va)
 116                 return -ENOMEM;
 117
 118         return 0;
 119 }
 120
 121 /**
 122  * i40e_free_dma_mem_d - OS specific memory free for shared code
 123  * @hw:   pointer to the HW structure
 124  * @mem:  ptr to mem struct to free
 125  **/
 126 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 127 {
 128         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 129
 130         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 131         mem->va = NULL;
 132         mem->pa = 0;
 133         mem->size = 0;
 134
 135         return 0;
 136 }
 137
 138 /**
 139  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 140  * @hw:   pointer to the HW structure
 141  * @mem:  ptr to mem struct to fill out
 142  * @size: size of memory requested
 143  **/
 144 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 145                              u32 size)
 146 {
 147         mem->size = size;
 148         mem->va = kzalloc(size, GFP_KERNEL);
 149
 150         if (!mem->va)
 151                 return -ENOMEM;
 152
 153         return 0;
 154 }
 155
 156 /**
 157  * i40e_free_virt_mem_d - OS specific memory free for shared code
 158  * @hw:   pointer to the HW structure
 159  * @mem:  ptr to mem struct to free
 160  **/
 161 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 162 {
 163         /* it's ok to kfree a NULL pointer */
 164         kfree(mem->va);
 165         mem->va = NULL;
 166         mem->size = 0;
 167
 168         return 0;
 169 }
 170
 171 /**
 172  * i40e_get_lump - find a lump of free generic resource
 173  * @pf: board private structure
 174  * @pile: the pile of resource to search
 175  * @needed: the number of items needed
 176  * @id: an owner id to stick on the items assigned
 177  *
 178  * Returns the base item index of the lump, or negative for error
 179  *
 180  * The search_hint trick and lack of advanced fit-finding only work
 181  * because we're highly likely to have all the same size lump requests.
 182  * Linear search time and any fragmentation should be minimal.
 183  **/
 184 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 185                          u16 needed, u16 id)
 186 {
 187         int ret = -ENOMEM;
 188         int i, j;
 189
 190         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 191                 dev_info(&pf->pdev->dev,
 192                          "param err: pile=%p needed=%d id=0x%04x\n",
 193                          pile, needed, id);
 194                 return -EINVAL;
 195         }
 196
 197         /* start the linear search with an imperfect hint */
 198         i = pile->search_hint;
 199         while (i < pile->num_entries) {
 200                 /* skip already allocated entries */
 201                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 202                         i++;
 203                         continue;
 204                 }
 205
 206                 /* do we have enough in this lump? */
 207                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 208                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 209                                 break;
 210                 }
 211
 212                 if (j == needed) {
 213                         /* there was enough, so assign it to the requestor */
 214                         for (j = 0; j < needed; j++)
 215                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 216                         ret = i;
 217                         pile->search_hint = i + j;
 218                         break;
 219                 }
 220
 221                 /* not enough, so skip over it and continue looking */
 222                 i += j;
 223         }
 224
 225         return ret;
 226 }
 227
 228 /**
 229  * i40e_put_lump - return a lump of generic resource
 230  * @pile: the pile of resource to search
 231  * @index: the base item index
 232  * @id: the owner id of the items assigned
 233  *
 234  * Returns the count of items in the lump
 235  **/
 236 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 237 {
 238         int valid_id = (id | I40E_PILE_VALID_BIT);
 239         int count = 0;
 240         int i;
 241
 242         if (!pile || index >= pile->num_entries)
 243                 return -EINVAL;
 244
 245         for (i = index;
 246              i < pile->num_entries && pile->list[i] == valid_id;
 247              i++) {
 248                 pile->list[i] = 0;
 249                 count++;
 250         }
 251
 252         if (count && index < pile->search_hint)
 253                 pile->search_hint = index;
 254
 255         return count;
 256 }
 257
 258 /**
 259  * i40e_find_vsi_from_id - searches for the vsi with the given id
 260  * @pf - the pf structure to search for the vsi
 261  * @id - id of the vsi it is searching for
 262  **/
 263 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 264 {
 265         int i;
 266
 267         for (i = 0; i < pf->num_alloc_vsi; i++)
 268                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 269                         return pf->vsi[i];
 270
 271         return NULL;
 272 }
 273
 274 /**
 275  * i40e_service_event_schedule - Schedule the service task to wake up
 276  * @pf: board private structure
 277  *
 278  * If not already scheduled, this puts the task into the work queue
 279  **/
 280 static void i40e_service_event_schedule(struct i40e_pf *pf)
 281 {
 282         if (!test_bit(__I40E_DOWN, &pf->state) &&
 283             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 284             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 285                 schedule_work(&pf->service_task);
 286 }
 287
 288 /**
 289  * i40e_tx_timeout - Respond to a Tx Hang
 290  * @netdev: network interface device structure
 291  *
 292  * If any port has noticed a Tx timeout, it is likely that the whole
 293  * device is munged, not just the one netdev port, so go for the full
 294  * reset.
 295  **/
 296 #ifdef I40E_FCOE
 297 void i40e_tx_timeout(struct net_device *netdev)
 298 #else
 299 static void i40e_tx_timeout(struct net_device *netdev)
 300 #endif
 301 {
 302         struct i40e_netdev_priv *np = netdev_priv(netdev);
 303         struct i40e_vsi *vsi = np->vsi;
 304         struct i40e_pf *pf = vsi->back;
 305         struct i40e_ring *tx_ring = NULL;
 306         unsigned int i, hung_queue = 0;
 307         u32 head, val;
 308
 309         pf->tx_timeout_count++;
 310
 311         /* find the stopped queue the same way the stack does */
 312         for (i = 0; i < netdev->num_tx_queues; i++) {
 313                 struct netdev_queue *q;
 314                 unsigned long trans_start;
 315
 316                 q = netdev_get_tx_queue(netdev, i);
 317                 trans_start = q->trans_start ? : netdev->trans_start;
 318                 if (netif_xmit_stopped(q) &&
 319                     time_after(jiffies,
 320                                (trans_start + netdev->watchdog_timeo))) {
 321                         hung_queue = i;
 322                         break;
 323                 }
 324         }
 325
 326         if (i == netdev->num_tx_queues) {
 327                 netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
 328         } else {
 329                 /* now that we have an index, find the tx_ring struct */
 330                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 331                         if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
 332                                 if (hung_queue ==
 333                                     vsi->tx_rings[i]->queue_index) {
 334                                         tx_ring = vsi->tx_rings[i];
 335                                         break;
 336                                 }
 337                         }
 338                 }
 339         }
 340
 341         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 342                 pf->tx_timeout_recovery_level = 1;  /* reset after some time */
 343         else if (time_before(jiffies,
 344                       (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
 345                 return;   /* don't do any new action before the next timeout */
 346
 347         if (tx_ring) {
 348                 head = i40e_get_head(tx_ring);
 349                 /* Read interrupt register */
 350                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
 351                         val = rd32(&pf->hw,
 352                              I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
 353                                                 tx_ring->vsi->base_vector - 1));
 354                 else
 355                         val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
 356
 357                 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",
 358                             vsi->seid, hung_queue, tx_ring->next_to_clean,
 359                             head, tx_ring->next_to_use,
 360                             readl(tx_ring->tail), val);
 361         }
 362
 363         pf->tx_timeout_last_recovery = jiffies;
 364         netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
 365                     pf->tx_timeout_recovery_level, hung_queue);
 366
 367         switch (pf->tx_timeout_recovery_level) {
 368         case 1:
 369                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 370                 break;
 371         case 2:
 372                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 373                 break;
 374         case 3:
 375                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 376                 break;
 377         default:
 378                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 379                 break;
 380         }
 381
 382         i40e_service_event_schedule(pf);
 383         pf->tx_timeout_recovery_level++;
 384 }
 385
 386 /**
 387  * i40e_release_rx_desc - Store the new tail and head values
 388  * @rx_ring: ring to bump
 389  * @val: new head index
 390  **/
 391 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 392 {
 393         rx_ring->next_to_use = val;
 394
 395         /* Force memory writes to complete before letting h/w
 396          * know there are new descriptors to fetch.  (Only
 397          * applicable for weak-ordered memory model archs,
 398          * such as IA-64).
 399          */
 400         wmb();
 401         writel(val, rx_ring->tail);
 402 }
 403
 404 /**
 405  * i40e_get_vsi_stats_struct - Get System Network Statistics
 406  * @vsi: the VSI we care about
 407  *
 408  * Returns the address of the device statistics structure.
 409  * The statistics are actually updated from the service task.
 410  **/
 411 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 412 {
 413         return &vsi->net_stats;
 414 }
 415
 416 /**
 417  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 418  * @netdev: network interface device structure
 419  *
 420  * Returns the address of the device statistics structure.
 421  * The statistics are actually updated from the service task.
 422  **/
 423 #ifdef I40E_FCOE
 424 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 425                                              struct net_device *netdev,
 426                                              struct rtnl_link_stats64 *stats)
 427 #else
 428 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 429                                              struct net_device *netdev,
 430                                              struct rtnl_link_stats64 *stats)
 431 #endif
 432 {
 433         struct i40e_netdev_priv *np = netdev_priv(netdev);
 434         struct i40e_ring *tx_ring, *rx_ring;
 435         struct i40e_vsi *vsi = np->vsi;
 436         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 437         int i;
 438
 439         if (test_bit(__I40E_DOWN, &vsi->state))
 440                 return stats;
 441
 442         if (!vsi->tx_rings)
 443                 return stats;
 444
 445         rcu_read_lock();
 446         for (i = 0; i < vsi->num_queue_pairs; i++) {
 447                 u64 bytes, packets;
 448                 unsigned int start;
 449
 450                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 451                 if (!tx_ring)
 452                         continue;
 453
 454                 do {
 455                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 456                         packets = tx_ring->stats.packets;
 457                         bytes   = tx_ring->stats.bytes;
 458                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 459
 460                 stats->tx_packets += packets;
 461                 stats->tx_bytes   += bytes;
 462                 rx_ring = &tx_ring[1];
 463
 464                 do {
 465                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 466                         packets = rx_ring->stats.packets;
 467                         bytes   = rx_ring->stats.bytes;
 468                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 469
 470                 stats->rx_packets += packets;
 471                 stats->rx_bytes   += bytes;
 472         }
 473         rcu_read_unlock();
 474
 475         /* following stats updated by i40e_watchdog_subtask() */
 476         stats->multicast        = vsi_stats->multicast;
 477         stats->tx_errors        = vsi_stats->tx_errors;
 478         stats->tx_dropped       = vsi_stats->tx_dropped;
 479         stats->rx_errors        = vsi_stats->rx_errors;
 480         stats->rx_dropped       = vsi_stats->rx_dropped;
 481         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 482         stats->rx_length_errors = vsi_stats->rx_length_errors;
 483
 484         return stats;
 485 }
 486
 487 /**
 488  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 489  * @vsi: the VSI to have its stats reset
 490  **/
 491 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 492 {
 493         struct rtnl_link_stats64 *ns;
 494         int i;
 495
 496         if (!vsi)
 497                 return;
 498
 499         ns = i40e_get_vsi_stats_struct(vsi);
 500         memset(ns, 0, sizeof(*ns));
 501         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 502         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 503         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 504         if (vsi->rx_rings && vsi->rx_rings[0]) {
 505                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 506                         memset(&vsi->rx_rings[i]->stats, 0,
 507                                sizeof(vsi->rx_rings[i]->stats));
 508                         memset(&vsi->rx_rings[i]->rx_stats, 0,
 509                                sizeof(vsi->rx_rings[i]->rx_stats));
 510                         memset(&vsi->tx_rings[i]->stats, 0,
 511                                sizeof(vsi->tx_rings[i]->stats));
 512                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 513                                sizeof(vsi->tx_rings[i]->tx_stats));
 514                 }
 515         }
 516         vsi->stat_offsets_loaded = false;
 517 }
 518
 519 /**
 520  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 521  * @pf: the PF to be reset
 522  **/
 523 void i40e_pf_reset_stats(struct i40e_pf *pf)
 524 {
 525         int i;
 526
 527         memset(&pf->stats, 0, sizeof(pf->stats));
 528         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 529         pf->stat_offsets_loaded = false;
 530
 531         for (i = 0; i < I40E_MAX_VEB; i++) {
 532                 if (pf->veb[i]) {
 533                         memset(&pf->veb[i]->stats, 0,
 534                                sizeof(pf->veb[i]->stats));
 535                         memset(&pf->veb[i]->stats_offsets, 0,
 536                                sizeof(pf->veb[i]->stats_offsets));
 537                         pf->veb[i]->stat_offsets_loaded = false;
 538                 }
 539         }
 540 }
 541
 542 /**
 543  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 544  * @hw: ptr to the hardware info
 545  * @hireg: the high 32 bit reg to read
 546  * @loreg: the low 32 bit reg to read
 547  * @offset_loaded: has the initial offset been loaded yet
 548  * @offset: ptr to current offset value
 549  * @stat: ptr to the stat
 550  *
 551  * Since the device stats are not reset at PFReset, they likely will not
 552  * be zeroed when the driver starts.  We'll save the first values read
 553  * and use them as offsets to be subtracted from the raw values in order
 554  * to report stats that count from zero.  In the process, we also manage
 555  * the potential roll-over.
 556  **/
 557 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 558                                bool offset_loaded, u64 *offset, u64 *stat)
 559 {
 560         u64 new_data;
 561
 562         if (hw->device_id == I40E_DEV_ID_QEMU) {
 563                 new_data = rd32(hw, loreg);
 564                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 565         } else {
 566                 new_data = rd64(hw, loreg);
 567         }
 568         if (!offset_loaded)
 569                 *offset = new_data;
 570         if (likely(new_data >= *offset))
 571                 *stat = new_data - *offset;
 572         else
 573                 *stat = (new_data + BIT_ULL(48)) - *offset;
 574         *stat &= 0xFFFFFFFFFFFFULL;
 575 }
 576
 577 /**
 578  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 579  * @hw: ptr to the hardware info
 580  * @reg: the hw reg to read
 581  * @offset_loaded: has the initial offset been loaded yet
 582  * @offset: ptr to current offset value
 583  * @stat: ptr to the stat
 584  **/
 585 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 586                                bool offset_loaded, u64 *offset, u64 *stat)
 587 {
 588         u32 new_data;
 589
 590         new_data = rd32(hw, reg);
 591         if (!offset_loaded)
 592                 *offset = new_data;
 593         if (likely(new_data >= *offset))
 594                 *stat = (u32)(new_data - *offset);
 595         else
 596                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 597 }
 598
 599 /**
 600  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 601  * @vsi: the VSI to be updated
 602  **/
 603 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 604 {
 605         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 606         struct i40e_pf *pf = vsi->back;
 607         struct i40e_hw *hw = &pf->hw;
 608         struct i40e_eth_stats *oes;
 609         struct i40e_eth_stats *es;     /* device's eth stats */
 610
 611         es = &vsi->eth_stats;
 612         oes = &vsi->eth_stats_offsets;
 613
 614         /* Gather up the stats that the hw collects */
 615         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 616                            vsi->stat_offsets_loaded,
 617                            &oes->tx_errors, &es->tx_errors);
 618         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 619                            vsi->stat_offsets_loaded,
 620                            &oes->rx_discards, &es->rx_discards);
 621         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 622                            vsi->stat_offsets_loaded,
 623                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 624         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 625                            vsi->stat_offsets_loaded,
 626                            &oes->tx_errors, &es->tx_errors);
 627
 628         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 629                            I40E_GLV_GORCL(stat_idx),
 630                            vsi->stat_offsets_loaded,
 631                            &oes->rx_bytes, &es->rx_bytes);
 632         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 633                            I40E_GLV_UPRCL(stat_idx),
 634                            vsi->stat_offsets_loaded,
 635                            &oes->rx_unicast, &es->rx_unicast);
 636         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 637                            I40E_GLV_MPRCL(stat_idx),
 638                            vsi->stat_offsets_loaded,
 639                            &oes->rx_multicast, &es->rx_multicast);
 640         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 641                            I40E_GLV_BPRCL(stat_idx),
 642                            vsi->stat_offsets_loaded,
 643                            &oes->rx_broadcast, &es->rx_broadcast);
 644
 645         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 646                            I40E_GLV_GOTCL(stat_idx),
 647                            vsi->stat_offsets_loaded,
 648                            &oes->tx_bytes, &es->tx_bytes);
 649         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 650                            I40E_GLV_UPTCL(stat_idx),
 651                            vsi->stat_offsets_loaded,
 652                            &oes->tx_unicast, &es->tx_unicast);
 653         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 654                            I40E_GLV_MPTCL(stat_idx),
 655                            vsi->stat_offsets_loaded,
 656                            &oes->tx_multicast, &es->tx_multicast);
 657         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 658                            I40E_GLV_BPTCL(stat_idx),
 659                            vsi->stat_offsets_loaded,
 660                            &oes->tx_broadcast, &es->tx_broadcast);
 661         vsi->stat_offsets_loaded = true;
 662 }
 663
 664 /**
 665  * i40e_update_veb_stats - Update Switch component statistics
 666  * @veb: the VEB being updated
 667  **/
 668 static void i40e_update_veb_stats(struct i40e_veb *veb)
 669 {
 670         struct i40e_pf *pf = veb->pf;
 671         struct i40e_hw *hw = &pf->hw;
 672         struct i40e_eth_stats *oes;
 673         struct i40e_eth_stats *es;     /* device's eth stats */
 674         struct i40e_veb_tc_stats *veb_oes;
 675         struct i40e_veb_tc_stats *veb_es;
 676         int i, idx = 0;
 677
 678         idx = veb->stats_idx;
 679         es = &veb->stats;
 680         oes = &veb->stats_offsets;
 681         veb_es = &veb->tc_stats;
 682         veb_oes = &veb->tc_stats_offsets;
 683
 684         /* Gather up the stats that the hw collects */
 685         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 686                            veb->stat_offsets_loaded,
 687                            &oes->tx_discards, &es->tx_discards);
 688         if (hw->revision_id > 0)
 689                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 690                                    veb->stat_offsets_loaded,
 691                                    &oes->rx_unknown_protocol,
 692                                    &es->rx_unknown_protocol);
 693         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 694                            veb->stat_offsets_loaded,
 695                            &oes->rx_bytes, &es->rx_bytes);
 696         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 697                            veb->stat_offsets_loaded,
 698                            &oes->rx_unicast, &es->rx_unicast);
 699         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 700                            veb->stat_offsets_loaded,
 701                            &oes->rx_multicast, &es->rx_multicast);
 702         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 703                            veb->stat_offsets_loaded,
 704                            &oes->rx_broadcast, &es->rx_broadcast);
 705
 706         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 707                            veb->stat_offsets_loaded,
 708                            &oes->tx_bytes, &es->tx_bytes);
 709         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 710                            veb->stat_offsets_loaded,
 711                            &oes->tx_unicast, &es->tx_unicast);
 712         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 713                            veb->stat_offsets_loaded,
 714                            &oes->tx_multicast, &es->tx_multicast);
 715         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 716                            veb->stat_offsets_loaded,
 717                            &oes->tx_broadcast, &es->tx_broadcast);
 718         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 719                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 720                                    I40E_GLVEBTC_RPCL(i, idx),
 721                                    veb->stat_offsets_loaded,
 722                                    &veb_oes->tc_rx_packets[i],
 723                                    &veb_es->tc_rx_packets[i]);
 724                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 725                                    I40E_GLVEBTC_RBCL(i, idx),
 726                                    veb->stat_offsets_loaded,
 727                                    &veb_oes->tc_rx_bytes[i],
 728                                    &veb_es->tc_rx_bytes[i]);
 729                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 730                                    I40E_GLVEBTC_TPCL(i, idx),
 731                                    veb->stat_offsets_loaded,
 732                                    &veb_oes->tc_tx_packets[i],
 733                                    &veb_es->tc_tx_packets[i]);
 734                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 735                                    I40E_GLVEBTC_TBCL(i, idx),
 736                                    veb->stat_offsets_loaded,
 737                                    &veb_oes->tc_tx_bytes[i],
 738                                    &veb_es->tc_tx_bytes[i]);
 739         }
 740         veb->stat_offsets_loaded = true;
 741 }
 742
 743 #ifdef I40E_FCOE
 744 /**
 745  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 746  * @vsi: the VSI that is capable of doing FCoE
 747  **/
 748 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 749 {
 750         struct i40e_pf *pf = vsi->back;
 751         struct i40e_hw *hw = &pf->hw;
 752         struct i40e_fcoe_stats *ofs;
 753         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 754         int idx;
 755
 756         if (vsi->type != I40E_VSI_FCOE)
 757                 return;
 758
 759         idx = (pf->pf_seid - I40E_BASE_PF_SEID) + I40E_FCOE_PF_STAT_OFFSET;
 760         fs = &vsi->fcoe_stats;
 761         ofs = &vsi->fcoe_stats_offsets;
 762
 763         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 764                            vsi->fcoe_stat_offsets_loaded,
 765                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 766         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 767                            vsi->fcoe_stat_offsets_loaded,
 768                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 769         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 770                            vsi->fcoe_stat_offsets_loaded,
 771                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 772         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 773                            vsi->fcoe_stat_offsets_loaded,
 774                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 775         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 776                            vsi->fcoe_stat_offsets_loaded,
 777                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 778         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 779                            vsi->fcoe_stat_offsets_loaded,
 780                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 781         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 782                            vsi->fcoe_stat_offsets_loaded,
 783                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 784         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 785                            vsi->fcoe_stat_offsets_loaded,
 786                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 787
 788         vsi->fcoe_stat_offsets_loaded = true;
 789 }
 790
 791 #endif
 792 /**
 793  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 794  * @pf: the corresponding PF
 795  *
 796  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 797  **/
 798 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 799 {
 800         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 801         struct i40e_hw_port_stats *nsd = &pf->stats;
 802         struct i40e_hw *hw = &pf->hw;
 803         u64 xoff = 0;
 804
 805         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 806             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 807                 return;
 808
 809         xoff = nsd->link_xoff_rx;
 810         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 811                            pf->stat_offsets_loaded,
 812                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 813
 814         /* No new LFC xoff rx */
 815         if (!(nsd->link_xoff_rx - xoff))
 816                 return;
 817
 818 }
 819
 820 /**
 821  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 822  * @pf: the corresponding PF
 823  *
 824  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 825  **/
 826 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 827 {
 828         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 829         struct i40e_hw_port_stats *nsd = &pf->stats;
 830         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 831         struct i40e_dcbx_config *dcb_cfg;
 832         struct i40e_hw *hw = &pf->hw;
 833         u16 i;
 834         u8 tc;
 835
 836         dcb_cfg = &hw->local_dcbx_config;
 837
 838         /* Collect Link XOFF stats when PFC is disabled */
 839         if (!dcb_cfg->pfc.pfcenable) {
 840                 i40e_update_link_xoff_rx(pf);
 841                 return;
 842         }
 843
 844         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 845                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 846
 847                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 848                                    pf->stat_offsets_loaded,
 849                                    &osd->priority_xoff_rx[i],
 850                                    &nsd->priority_xoff_rx[i]);
 851
 852                 /* No new PFC xoff rx */
 853                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 854                         continue;
 855                 /* Get the TC for given priority */
 856                 tc = dcb_cfg->etscfg.prioritytable[i];
 857                 xoff[tc] = true;
 858         }
 859 }
 860
 861 /**
 862  * i40e_update_vsi_stats - Update the vsi statistics counters.
 863  * @vsi: the VSI to be updated
 864  *
 865  * There are a few instances where we store the same stat in a
 866  * couple of different structs.  This is partly because we have
 867  * the netdev stats that need to be filled out, which is slightly
 868  * different from the "eth_stats" defined by the chip and used in
 869  * VF communications.  We sort it out here.
 870  **/
 871 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 872 {
 873         struct i40e_pf *pf = vsi->back;
 874         struct rtnl_link_stats64 *ons;
 875         struct rtnl_link_stats64 *ns;   /* netdev stats */
 876         struct i40e_eth_stats *oes;
 877         struct i40e_eth_stats *es;     /* device's eth stats */
 878         u32 tx_restart, tx_busy;
 879         struct i40e_ring *p;
 880         u32 rx_page, rx_buf;
 881         u64 bytes, packets;
 882         unsigned int start;
 883         u64 tx_linearize;
 884         u64 rx_p, rx_b;
 885         u64 tx_p, tx_b;
 886         u16 q;
 887
 888         if (test_bit(__I40E_DOWN, &vsi->state) ||
 889             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 890                 return;
 891
 892         ns = i40e_get_vsi_stats_struct(vsi);
 893         ons = &vsi->net_stats_offsets;
 894         es = &vsi->eth_stats;
 895         oes = &vsi->eth_stats_offsets;
 896
 897         /* Gather up the netdev and vsi stats that the driver collects
 898          * on the fly during packet processing
 899          */
 900         rx_b = rx_p = 0;
 901         tx_b = tx_p = 0;
 902         tx_restart = tx_busy = tx_linearize = 0;
 903         rx_page = 0;
 904         rx_buf = 0;
 905         rcu_read_lock();
 906         for (q = 0; q < vsi->num_queue_pairs; q++) {
 907                 /* locate Tx ring */
 908                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 909
 910                 do {
 911                         start = u64_stats_fetch_begin_irq(&p->syncp);
 912                         packets = p->stats.packets;
 913                         bytes = p->stats.bytes;
 914                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 915                 tx_b += bytes;
 916                 tx_p += packets;
 917                 tx_restart += p->tx_stats.restart_queue;
 918                 tx_busy += p->tx_stats.tx_busy;
 919                 tx_linearize += p->tx_stats.tx_linearize;
 920
 921                 /* Rx queue is part of the same block as Tx queue */
 922                 p = &p[1];
 923                 do {
 924                         start = u64_stats_fetch_begin_irq(&p->syncp);
 925                         packets = p->stats.packets;
 926                         bytes = p->stats.bytes;
 927                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 928                 rx_b += bytes;
 929                 rx_p += packets;
 930                 rx_buf += p->rx_stats.alloc_buff_failed;
 931                 rx_page += p->rx_stats.alloc_page_failed;
 932         }
 933         rcu_read_unlock();
 934         vsi->tx_restart = tx_restart;
 935         vsi->tx_busy = tx_busy;
 936         vsi->tx_linearize = tx_linearize;
 937         vsi->rx_page_failed = rx_page;
 938         vsi->rx_buf_failed = rx_buf;
 939
 940         ns->rx_packets = rx_p;
 941         ns->rx_bytes = rx_b;
 942         ns->tx_packets = tx_p;
 943         ns->tx_bytes = tx_b;
 944
 945         /* update netdev stats from eth stats */
 946         i40e_update_eth_stats(vsi);
 947         ons->tx_errors = oes->tx_errors;
 948         ns->tx_errors = es->tx_errors;
 949         ons->multicast = oes->rx_multicast;
 950         ns->multicast = es->rx_multicast;
 951         ons->rx_dropped = oes->rx_discards;
 952         ns->rx_dropped = es->rx_discards;
 953         ons->tx_dropped = oes->tx_discards;
 954         ns->tx_dropped = es->tx_discards;
 955
 956         /* pull in a couple PF stats if this is the main vsi */
 957         if (vsi == pf->vsi[pf->lan_vsi]) {
 958                 ns->rx_crc_errors = pf->stats.crc_errors;
 959                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 960                 ns->rx_length_errors = pf->stats.rx_length_errors;
 961         }
 962 }
 963
 964 /**
 965  * i40e_update_pf_stats - Update the PF statistics counters.
 966  * @pf: the PF to be updated
 967  **/
 968 static void i40e_update_pf_stats(struct i40e_pf *pf)
 969 {
 970         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 971         struct i40e_hw_port_stats *nsd = &pf->stats;
 972         struct i40e_hw *hw = &pf->hw;
 973         u32 val;
 974         int i;
 975
 976         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 977                            I40E_GLPRT_GORCL(hw->port),
 978                            pf->stat_offsets_loaded,
 979                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 980         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 981                            I40E_GLPRT_GOTCL(hw->port),
 982                            pf->stat_offsets_loaded,
 983                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 984         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 985                            pf->stat_offsets_loaded,
 986                            &osd->eth.rx_discards,
 987                            &nsd->eth.rx_discards);
 988         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 989                            I40E_GLPRT_UPRCL(hw->port),
 990                            pf->stat_offsets_loaded,
 991                            &osd->eth.rx_unicast,
 992                            &nsd->eth.rx_unicast);
 993         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 994                            I40E_GLPRT_MPRCL(hw->port),
 995                            pf->stat_offsets_loaded,
 996                            &osd->eth.rx_multicast,
 997                            &nsd->eth.rx_multicast);
 998         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 999                            I40E_GLPRT_BPRCL(hw->port),
1000                            pf->stat_offsets_loaded,
1001                            &osd->eth.rx_broadcast,
1002                            &nsd->eth.rx_broadcast);
1003         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
1004                            I40E_GLPRT_UPTCL(hw->port),
1005                            pf->stat_offsets_loaded,
1006                            &osd->eth.tx_unicast,
1007                            &nsd->eth.tx_unicast);
1008         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
1009                            I40E_GLPRT_MPTCL(hw->port),
1010                            pf->stat_offsets_loaded,
1011                            &osd->eth.tx_multicast,
1012                            &nsd->eth.tx_multicast);
1013         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
1014                            I40E_GLPRT_BPTCL(hw->port),
1015                            pf->stat_offsets_loaded,
1016                            &osd->eth.tx_broadcast,
1017                            &nsd->eth.tx_broadcast);
1018
1019         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
1020                            pf->stat_offsets_loaded,
1021                            &osd->tx_dropped_link_down,
1022                            &nsd->tx_dropped_link_down);
1023
1024         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
1025                            pf->stat_offsets_loaded,
1026                            &osd->crc_errors, &nsd->crc_errors);
1027
1028         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
1029                            pf->stat_offsets_loaded,
1030                            &osd->illegal_bytes, &nsd->illegal_bytes);
1031
1032         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
1033                            pf->stat_offsets_loaded,
1034                            &osd->mac_local_faults,
1035                            &nsd->mac_local_faults);
1036         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
1037                            pf->stat_offsets_loaded,
1038                            &osd->mac_remote_faults,
1039                            &nsd->mac_remote_faults);
1040
1041         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
1042                            pf->stat_offsets_loaded,
1043                            &osd->rx_length_errors,
1044                            &nsd->rx_length_errors);
1045
1046         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
1047                            pf->stat_offsets_loaded,
1048                            &osd->link_xon_rx, &nsd->link_xon_rx);
1049         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
1050                            pf->stat_offsets_loaded,
1051                            &osd->link_xon_tx, &nsd->link_xon_tx);
1052         i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
1053         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
1054                            pf->stat_offsets_loaded,
1055                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
1056
1057         for (i = 0; i < 8; i++) {
1058                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
1059                                    pf->stat_offsets_loaded,
1060                                    &osd->priority_xon_rx[i],
1061                                    &nsd->priority_xon_rx[i]);
1062                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1063                                    pf->stat_offsets_loaded,
1064                                    &osd->priority_xon_tx[i],
1065                                    &nsd->priority_xon_tx[i]);
1066                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1067                                    pf->stat_offsets_loaded,
1068                                    &osd->priority_xoff_tx[i],
1069                                    &nsd->priority_xoff_tx[i]);
1070                 i40e_stat_update32(hw,
1071                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1072                                    pf->stat_offsets_loaded,
1073                                    &osd->priority_xon_2_xoff[i],
1074                                    &nsd->priority_xon_2_xoff[i]);
1075         }
1076
1077         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1078                            I40E_GLPRT_PRC64L(hw->port),
1079                            pf->stat_offsets_loaded,
1080                            &osd->rx_size_64, &nsd->rx_size_64);
1081         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1082                            I40E_GLPRT_PRC127L(hw->port),
1083                            pf->stat_offsets_loaded,
1084                            &osd->rx_size_127, &nsd->rx_size_127);
1085         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1086                            I40E_GLPRT_PRC255L(hw->port),
1087                            pf->stat_offsets_loaded,
1088                            &osd->rx_size_255, &nsd->rx_size_255);
1089         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1090                            I40E_GLPRT_PRC511L(hw->port),
1091                            pf->stat_offsets_loaded,
1092                            &osd->rx_size_511, &nsd->rx_size_511);
1093         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1094                            I40E_GLPRT_PRC1023L(hw->port),
1095                            pf->stat_offsets_loaded,
1096                            &osd->rx_size_1023, &nsd->rx_size_1023);
1097         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1098                            I40E_GLPRT_PRC1522L(hw->port),
1099                            pf->stat_offsets_loaded,
1100                            &osd->rx_size_1522, &nsd->rx_size_1522);
1101         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1102                            I40E_GLPRT_PRC9522L(hw->port),
1103                            pf->stat_offsets_loaded,
1104                            &osd->rx_size_big, &nsd->rx_size_big);
1105
1106         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1107                            I40E_GLPRT_PTC64L(hw->port),
1108                            pf->stat_offsets_loaded,
1109                            &osd->tx_size_64, &nsd->tx_size_64);
1110         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1111                            I40E_GLPRT_PTC127L(hw->port),
1112                            pf->stat_offsets_loaded,
1113                            &osd->tx_size_127, &nsd->tx_size_127);
1114         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1115                            I40E_GLPRT_PTC255L(hw->port),
1116                            pf->stat_offsets_loaded,
1117                            &osd->tx_size_255, &nsd->tx_size_255);
1118         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1119                            I40E_GLPRT_PTC511L(hw->port),
1120                            pf->stat_offsets_loaded,
1121                            &osd->tx_size_511, &nsd->tx_size_511);
1122         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1123                            I40E_GLPRT_PTC1023L(hw->port),
1124                            pf->stat_offsets_loaded,
1125                            &osd->tx_size_1023, &nsd->tx_size_1023);
1126         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1127                            I40E_GLPRT_PTC1522L(hw->port),
1128                            pf->stat_offsets_loaded,
1129                            &osd->tx_size_1522, &nsd->tx_size_1522);
1130         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1131                            I40E_GLPRT_PTC9522L(hw->port),
1132                            pf->stat_offsets_loaded,
1133                            &osd->tx_size_big, &nsd->tx_size_big);
1134
1135         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1136                            pf->stat_offsets_loaded,
1137                            &osd->rx_undersize, &nsd->rx_undersize);
1138         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1139                            pf->stat_offsets_loaded,
1140                            &osd->rx_fragments, &nsd->rx_fragments);
1141         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1142                            pf->stat_offsets_loaded,
1143                            &osd->rx_oversize, &nsd->rx_oversize);
1144         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1145                            pf->stat_offsets_loaded,
1146                            &osd->rx_jabber, &nsd->rx_jabber);
1147
1148         /* FDIR stats */
1149         i40e_stat_update32(hw,
1150                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1151                            pf->stat_offsets_loaded,
1152                            &osd->fd_atr_match, &nsd->fd_atr_match);
1153         i40e_stat_update32(hw,
1154                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1155                            pf->stat_offsets_loaded,
1156                            &osd->fd_sb_match, &nsd->fd_sb_match);
1157         i40e_stat_update32(hw,
1158                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1159                       pf->stat_offsets_loaded,
1160                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1161
1162         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1163         nsd->tx_lpi_status =
1164                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1165                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1166         nsd->rx_lpi_status =
1167                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1168                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1169         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1170                            pf->stat_offsets_loaded,
1171                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1172         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1173                            pf->stat_offsets_loaded,
1174                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1175
1176         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1177             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1178                 nsd->fd_sb_status = true;
1179         else
1180                 nsd->fd_sb_status = false;
1181
1182         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1183             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1184                 nsd->fd_atr_status = true;
1185         else
1186                 nsd->fd_atr_status = false;
1187
1188         pf->stat_offsets_loaded = true;
1189 }
1190
1191 /**
1192  * i40e_update_stats - Update the various statistics counters.
1193  * @vsi: the VSI to be updated
1194  *
1195  * Update the various stats for this VSI and its related entities.
1196  **/
1197 void i40e_update_stats(struct i40e_vsi *vsi)
1198 {
1199         struct i40e_pf *pf = vsi->back;
1200
1201         if (vsi == pf->vsi[pf->lan_vsi])
1202                 i40e_update_pf_stats(pf);
1203
1204         i40e_update_vsi_stats(vsi);
1205 #ifdef I40E_FCOE
1206         i40e_update_fcoe_stats(vsi);
1207 #endif
1208 }
1209
1210 /**
1211  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1212  * @vsi: the VSI to be searched
1213  * @macaddr: the MAC address
1214  * @vlan: the vlan
1215  * @is_vf: make sure its a VF filter, else doesn't matter
1216  * @is_netdev: make sure its a netdev filter, else doesn't matter
1217  *
1218  * Returns ptr to the filter object or NULL
1219  **/
1220 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1221                                                 u8 *macaddr, s16 vlan,
1222                                                 bool is_vf, bool is_netdev)
1223 {
1224         struct i40e_mac_filter *f;
1225
1226         if (!vsi || !macaddr)
1227                 return NULL;
1228
1229         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1230                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1231                     (vlan == f->vlan)    &&
1232                     (!is_vf || f->is_vf) &&
1233                     (!is_netdev || f->is_netdev))
1234                         return f;
1235         }
1236         return NULL;
1237 }
1238
1239 /**
1240  * i40e_find_mac - Find a mac addr in the macvlan filters list
1241  * @vsi: the VSI to be searched
1242  * @macaddr: the MAC address we are searching for
1243  * @is_vf: make sure its a VF filter, else doesn't matter
1244  * @is_netdev: make sure its a netdev filter, else doesn't matter
1245  *
1246  * Returns the first filter with the provided MAC address or NULL if
1247  * MAC address was not found
1248  **/
1249 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1250                                       bool is_vf, bool is_netdev)
1251 {
1252         struct i40e_mac_filter *f;
1253
1254         if (!vsi || !macaddr)
1255                 return NULL;
1256
1257         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1258                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1259                     (!is_vf || f->is_vf) &&
1260                     (!is_netdev || f->is_netdev))
1261                         return f;
1262         }
1263         return NULL;
1264 }
1265
1266 /**
1267  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1268  * @vsi: the VSI to be searched
1269  *
1270  * Returns true if VSI is in vlan mode or false otherwise
1271  **/
1272 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1273 {
1274         struct i40e_mac_filter *f;
1275
1276         /* Only -1 for all the filters denotes not in vlan mode
1277          * so we have to go through all the list in order to make sure
1278          */
1279         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1280                 if (f->vlan >= 0 || vsi->info.pvid)
1281                         return true;
1282         }
1283
1284         return false;
1285 }
1286
1287 /**
1288  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1289  * @vsi: the VSI to be searched
1290  * @macaddr: the mac address to be filtered
1291  * @is_vf: true if it is a VF
1292  * @is_netdev: true if it is a netdev
1293  *
1294  * Goes through all the macvlan filters and adds a
1295  * macvlan filter for each unique vlan that already exists
1296  *
1297  * Returns first filter found on success, else NULL
1298  **/
1299 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1300                                              bool is_vf, bool is_netdev)
1301 {
1302         struct i40e_mac_filter *f;
1303
1304         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1305                 if (vsi->info.pvid)
1306                         f->vlan = le16_to_cpu(vsi->info.pvid);
1307                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1308                                       is_vf, is_netdev)) {
1309                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1310                                              is_vf, is_netdev))
1311                                 return NULL;
1312                 }
1313         }
1314
1315         return list_first_entry_or_null(&vsi->mac_filter_list,
1316                                         struct i40e_mac_filter, list);
1317 }
1318
1319 /**
1320  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1321  * @vsi: the PF Main VSI - inappropriate for any other VSI
1322  * @macaddr: the MAC address
1323  *
1324  * Some older firmware configurations set up a default promiscuous VLAN
1325  * filter that needs to be removed.
1326  **/
1327 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1328 {
1329         struct i40e_aqc_remove_macvlan_element_data element;
1330         struct i40e_pf *pf = vsi->back;
1331         i40e_status ret;
1332
1333         /* Only appropriate for the PF main VSI */
1334         if (vsi->type != I40E_VSI_MAIN)
1335                 return -EINVAL;
1336
1337         memset(&element, 0, sizeof(element));
1338         ether_addr_copy(element.mac_addr, macaddr);
1339         element.vlan_tag = 0;
1340         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1341                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1342         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1343         if (ret)
1344                 return -ENOENT;
1345
1346         return 0;
1347 }
1348
1349 /**
1350  * i40e_add_filter - Add a mac/vlan filter to the VSI
1351  * @vsi: the VSI to be searched
1352  * @macaddr: the MAC address
1353  * @vlan: the vlan
1354  * @is_vf: make sure its a VF filter, else doesn't matter
1355  * @is_netdev: make sure its a netdev filter, else doesn't matter
1356  *
1357  * Returns ptr to the filter object or NULL when no memory available.
1358  **/
1359 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1360                                         u8 *macaddr, s16 vlan,
1361                                         bool is_vf, bool is_netdev)
1362 {
1363         struct i40e_mac_filter *f;
1364
1365         if (!vsi || !macaddr)
1366                 return NULL;
1367
1368         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1369         if (!f) {
1370                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1371                 if (!f)
1372                         goto add_filter_out;
1373
1374                 ether_addr_copy(f->macaddr, macaddr);
1375                 f->vlan = vlan;
1376                 f->changed = true;
1377
1378                 INIT_LIST_HEAD(&f->list);
1379                 list_add(&f->list, &vsi->mac_filter_list);
1380         }
1381
1382         /* increment counter and add a new flag if needed */
1383         if (is_vf) {
1384                 if (!f->is_vf) {
1385                         f->is_vf = true;
1386                         f->counter++;
1387                 }
1388         } else if (is_netdev) {
1389                 if (!f->is_netdev) {
1390                         f->is_netdev = true;
1391                         f->counter++;
1392                 }
1393         } else {
1394                 f->counter++;
1395         }
1396
1397         /* changed tells sync_filters_subtask to
1398          * push the filter down to the firmware
1399          */
1400         if (f->changed) {
1401                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1402                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1403         }
1404
1405 add_filter_out:
1406         return f;
1407 }
1408
1409 /**
1410  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1411  * @vsi: the VSI to be searched
1412  * @macaddr: the MAC address
1413  * @vlan: the vlan
1414  * @is_vf: make sure it's a VF filter, else doesn't matter
1415  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1416  **/
1417 void i40e_del_filter(struct i40e_vsi *vsi,
1418                      u8 *macaddr, s16 vlan,
1419                      bool is_vf, bool is_netdev)
1420 {
1421         struct i40e_mac_filter *f;
1422
1423         if (!vsi || !macaddr)
1424                 return;
1425
1426         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1427         if (!f || f->counter == 0)
1428                 return;
1429
1430         if (is_vf) {
1431                 if (f->is_vf) {
1432                         f->is_vf = false;
1433                         f->counter--;
1434                 }
1435         } else if (is_netdev) {
1436                 if (f->is_netdev) {
1437                         f->is_netdev = false;
1438                         f->counter--;
1439                 }
1440         } else {
1441                 /* make sure we don't remove a filter in use by VF or netdev */
1442                 int min_f = 0;
1443
1444                 min_f += (f->is_vf ? 1 : 0);
1445                 min_f += (f->is_netdev ? 1 : 0);
1446
1447                 if (f->counter > min_f)
1448                         f->counter--;
1449         }
1450
1451         /* counter == 0 tells sync_filters_subtask to
1452          * remove the filter from the firmware's list
1453          */
1454         if (f->counter == 0) {
1455                 f->changed = true;
1456                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1457                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1458         }
1459 }
1460
1461 /**
1462  * i40e_set_mac - NDO callback to set mac address
1463  * @netdev: network interface device structure
1464  * @p: pointer to an address structure
1465  *
1466  * Returns 0 on success, negative on failure
1467  **/
1468 #ifdef I40E_FCOE
1469 int i40e_set_mac(struct net_device *netdev, void *p)
1470 #else
1471 static int i40e_set_mac(struct net_device *netdev, void *p)
1472 #endif
1473 {
1474         struct i40e_netdev_priv *np = netdev_priv(netdev);
1475         struct i40e_vsi *vsi = np->vsi;
1476         struct i40e_pf *pf = vsi->back;
1477         struct i40e_hw *hw = &pf->hw;
1478         struct sockaddr *addr = p;
1479         struct i40e_mac_filter *f;
1480
1481         if (!is_valid_ether_addr(addr->sa_data))
1482                 return -EADDRNOTAVAIL;
1483
1484         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1485                 netdev_info(netdev, "already using mac address %pM\n",
1486                             addr->sa_data);
1487                 return 0;
1488         }
1489
1490         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1491             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1492                 return -EADDRNOTAVAIL;
1493
1494         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1495                 netdev_info(netdev, "returning to hw mac address %pM\n",
1496                             hw->mac.addr);
1497         else
1498                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1499
1500         if (vsi->type == I40E_VSI_MAIN) {
1501                 i40e_status ret;
1502
1503                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1504                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1505                                                 addr->sa_data, NULL);
1506                 if (ret) {
1507                         netdev_info(netdev,
1508                                     "Addr change for Main VSI failed: %d\n",
1509                                     ret);
1510                         return -EADDRNOTAVAIL;
1511                 }
1512         }
1513
1514         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1515                 struct i40e_aqc_remove_macvlan_element_data element;
1516
1517                 memset(&element, 0, sizeof(element));
1518                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1519                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1520                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1521         } else {
1522                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1523                                 false, false);
1524         }
1525
1526         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1527                 struct i40e_aqc_add_macvlan_element_data element;
1528
1529                 memset(&element, 0, sizeof(element));
1530                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1531                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1532                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1533         } else {
1534                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1535                                     false, false);
1536                 if (f)
1537                         f->is_laa = true;
1538         }
1539
1540         i40e_sync_vsi_filters(vsi, false);
1541         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1542
1543         return 0;
1544 }
1545
1546 /**
1547  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1548  * @vsi: the VSI being setup
1549  * @ctxt: VSI context structure
1550  * @enabled_tc: Enabled TCs bitmap
1551  * @is_add: True if called before Add VSI
1552  *
1553  * Setup VSI queue mapping for enabled traffic classes.
1554  **/
1555 #ifdef I40E_FCOE
1556 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1557                               struct i40e_vsi_context *ctxt,
1558                               u8 enabled_tc,
1559                               bool is_add)
1560 #else
1561 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1562                                      struct i40e_vsi_context *ctxt,
1563                                      u8 enabled_tc,
1564                                      bool is_add)
1565 #endif
1566 {
1567         struct i40e_pf *pf = vsi->back;
1568         u16 sections = 0;
1569         u8 netdev_tc = 0;
1570         u16 numtc = 0;
1571         u16 qcount;
1572         u8 offset;
1573         u16 qmap;
1574         int i;
1575         u16 num_tc_qps = 0;
1576
1577         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1578         offset = 0;
1579
1580         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1581                 /* Find numtc from enabled TC bitmap */
1582                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1583                         if (enabled_tc & BIT_ULL(i)) /* TC is enabled */
1584                                 numtc++;
1585                 }
1586                 if (!numtc) {
1587                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1588                         numtc = 1;
1589                 }
1590         } else {
1591                 /* At least TC0 is enabled in case of non-DCB case */
1592                 numtc = 1;
1593         }
1594
1595         vsi->tc_config.numtc = numtc;
1596         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1597         /* Number of queues per enabled TC */
1598         /* In MFP case we can have a much lower count of MSIx
1599          * vectors available and so we need to lower the used
1600          * q count.
1601          */
1602         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1603                 qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
1604         else
1605                 qcount = vsi->alloc_queue_pairs;
1606         num_tc_qps = qcount / numtc;
1607         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1608
1609         /* Setup queue offset/count for all TCs for given VSI */
1610         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1611                 /* See if the given TC is enabled for the given VSI */
1612                 if (vsi->tc_config.enabled_tc & BIT_ULL(i)) {
1613                         /* TC is enabled */
1614                         int pow, num_qps;
1615
1616                         switch (vsi->type) {
1617                         case I40E_VSI_MAIN:
1618                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1619                                 break;
1620 #ifdef I40E_FCOE
1621                         case I40E_VSI_FCOE:
1622                                 qcount = num_tc_qps;
1623                                 break;
1624 #endif
1625                         case I40E_VSI_FDIR:
1626                         case I40E_VSI_SRIOV:
1627                         case I40E_VSI_VMDQ2:
1628                         default:
1629                                 qcount = num_tc_qps;
1630                                 WARN_ON(i != 0);
1631                                 break;
1632                         }
1633                         vsi->tc_config.tc_info[i].qoffset = offset;
1634                         vsi->tc_config.tc_info[i].qcount = qcount;
1635
1636                         /* find the next higher power-of-2 of num queue pairs */
1637                         num_qps = qcount;
1638                         pow = 0;
1639                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1640                                 pow++;
1641                                 num_qps >>= 1;
1642                         }
1643
1644                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1645                         qmap =
1646                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1647                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1648
1649                         offset += qcount;
1650                 } else {
1651                         /* TC is not enabled so set the offset to
1652                          * default queue and allocate one queue
1653                          * for the given TC.
1654                          */
1655                         vsi->tc_config.tc_info[i].qoffset = 0;
1656                         vsi->tc_config.tc_info[i].qcount = 1;
1657                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1658
1659                         qmap = 0;
1660                 }
1661                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1662         }
1663
1664         /* Set actual Tx/Rx queue pairs */
1665         vsi->num_queue_pairs = offset;
1666         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1667                 if (vsi->req_queue_pairs > 0)
1668                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1669                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1670                         vsi->num_queue_pairs = pf->num_lan_msix;
1671         }
1672
1673         /* Scheduler section valid can only be set for ADD VSI */
1674         if (is_add) {
1675                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1676
1677                 ctxt->info.up_enable_bits = enabled_tc;
1678         }
1679         if (vsi->type == I40E_VSI_SRIOV) {
1680                 ctxt->info.mapping_flags |=
1681                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1682                 for (i = 0; i < vsi->num_queue_pairs; i++)
1683                         ctxt->info.queue_mapping[i] =
1684                                                cpu_to_le16(vsi->base_queue + i);
1685         } else {
1686                 ctxt->info.mapping_flags |=
1687                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1688                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1689         }
1690         ctxt->info.valid_sections |= cpu_to_le16(sections);
1691 }
1692
1693 /**
1694  * i40e_set_rx_mode - NDO callback to set the netdev filters
1695  * @netdev: network interface device structure
1696  **/
1697 #ifdef I40E_FCOE
1698 void i40e_set_rx_mode(struct net_device *netdev)
1699 #else
1700 static void i40e_set_rx_mode(struct net_device *netdev)
1701 #endif
1702 {
1703         struct i40e_netdev_priv *np = netdev_priv(netdev);
1704         struct i40e_mac_filter *f, *ftmp;
1705         struct i40e_vsi *vsi = np->vsi;
1706         struct netdev_hw_addr *uca;
1707         struct netdev_hw_addr *mca;
1708         struct netdev_hw_addr *ha;
1709
1710         /* add addr if not already in the filter list */
1711         netdev_for_each_uc_addr(uca, netdev) {
1712                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1713                         if (i40e_is_vsi_in_vlan(vsi))
1714                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1715                                                      false, true);
1716                         else
1717                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1718                                                 false, true);
1719                 }
1720         }
1721
1722         netdev_for_each_mc_addr(mca, netdev) {
1723                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1724                         if (i40e_is_vsi_in_vlan(vsi))
1725                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1726                                                      false, true);
1727                         else
1728                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1729                                                 false, true);
1730                 }
1731         }
1732
1733         /* remove filter if not in netdev list */
1734         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1735
1736                 if (!f->is_netdev)
1737                         continue;
1738
1739                 netdev_for_each_mc_addr(mca, netdev)
1740                         if (ether_addr_equal(mca->addr, f->macaddr))
1741                                 goto bottom_of_search_loop;
1742
1743                 netdev_for_each_uc_addr(uca, netdev)
1744                         if (ether_addr_equal(uca->addr, f->macaddr))
1745                                 goto bottom_of_search_loop;
1746
1747                 for_each_dev_addr(netdev, ha)
1748                         if (ether_addr_equal(ha->addr, f->macaddr))
1749                                 goto bottom_of_search_loop;
1750
1751                 /* f->macaddr wasn't found in uc, mc, or ha list so delete it */
1752                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1753
1754 bottom_of_search_loop:
1755                 continue;
1756         }
1757
1758         /* check for other flag changes */
1759         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1760                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1761                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1762         }
1763 }
1764
1765 /**
1766  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1767  * @vsi: ptr to the VSI
1768  * @grab_rtnl: whether RTNL needs to be grabbed
1769  *
1770  * Push any outstanding VSI filter changes through the AdminQ.
1771  *
1772  * Returns 0 or error value
1773  **/
1774 int i40e_sync_vsi_filters(struct i40e_vsi *vsi, bool grab_rtnl)
1775 {
1776         struct i40e_mac_filter *f, *ftmp;
1777         bool promisc_forced_on = false;
1778         bool add_happened = false;
1779         int filter_list_len = 0;
1780         u32 changed_flags = 0;
1781         i40e_status ret = 0;
1782         struct i40e_pf *pf;
1783         int num_add = 0;
1784         int num_del = 0;
1785         int aq_err = 0;
1786         u16 cmd_flags;
1787
1788         /* empty array typed pointers, kcalloc later */
1789         struct i40e_aqc_add_macvlan_element_data *add_list;
1790         struct i40e_aqc_remove_macvlan_element_data *del_list;
1791
1792         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1793                 usleep_range(1000, 2000);
1794         pf = vsi->back;
1795
1796         if (vsi->netdev) {
1797                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1798                 vsi->current_netdev_flags = vsi->netdev->flags;
1799         }
1800
1801         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1802                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1803
1804                 filter_list_len = pf->hw.aq.asq_buf_size /
1805                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1806                 del_list = kcalloc(filter_list_len,
1807                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1808                             GFP_KERNEL);
1809                 if (!del_list)
1810                         return -ENOMEM;
1811
1812                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1813                         if (!f->changed)
1814                                 continue;
1815
1816                         if (f->counter != 0)
1817                                 continue;
1818                         f->changed = false;
1819                         cmd_flags = 0;
1820
1821                         /* add to delete list */
1822                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1823                         del_list[num_del].vlan_tag =
1824                                 cpu_to_le16((u16)(f->vlan ==
1825                                             I40E_VLAN_ANY ? 0 : f->vlan));
1826
1827                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1828                         del_list[num_del].flags = cmd_flags;
1829                         num_del++;
1830
1831                         /* unlink from filter list */
1832                         list_del(&f->list);
1833                         kfree(f);
1834
1835                         /* flush a full buffer */
1836                         if (num_del == filter_list_len) {
1837                                 ret = i40e_aq_remove_macvlan(&pf->hw,
1838                                                   vsi->seid, del_list, num_del,
1839                                                   NULL);
1840                                 aq_err = pf->hw.aq.asq_last_status;
1841                                 num_del = 0;
1842                                 memset(del_list, 0, sizeof(*del_list));
1843
1844                                 if (ret && aq_err != I40E_AQ_RC_ENOENT)
1845                                         dev_info(&pf->pdev->dev,
1846                                                  "ignoring delete macvlan error, err %s, aq_err %s while flushing a full buffer\n",
1847                                                  i40e_stat_str(&pf->hw, ret),
1848                                                  i40e_aq_str(&pf->hw, aq_err));
1849                         }
1850                 }
1851                 if (num_del) {
1852                         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1853                                                      del_list, num_del, NULL);
1854                         aq_err = pf->hw.aq.asq_last_status;
1855                         num_del = 0;
1856
1857                         if (ret && aq_err != I40E_AQ_RC_ENOENT)
1858                                 dev_info(&pf->pdev->dev,
1859                                          "ignoring delete macvlan error, err %s aq_err %s\n",
1860                                          i40e_stat_str(&pf->hw, ret),
1861                                          i40e_aq_str(&pf->hw, aq_err));
1862                 }
1863
1864                 kfree(del_list);
1865                 del_list = NULL;
1866
1867                 /* do all the adds now */
1868                 filter_list_len = pf->hw.aq.asq_buf_size /
1869                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1870                 add_list = kcalloc(filter_list_len,
1871                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1872                                GFP_KERNEL);
1873                 if (!add_list)
1874                         return -ENOMEM;
1875
1876                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1877                         if (!f->changed)
1878                                 continue;
1879
1880                         if (f->counter == 0)
1881                                 continue;
1882                         f->changed = false;
1883                         add_happened = true;
1884                         cmd_flags = 0;
1885
1886                         /* add to add array */
1887                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
1888                         add_list[num_add].vlan_tag =
1889                                 cpu_to_le16(
1890                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1891                         add_list[num_add].queue_number = 0;
1892
1893                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1894                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1895                         num_add++;
1896
1897                         /* flush a full buffer */
1898                         if (num_add == filter_list_len) {
1899                                 ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1900                                                           add_list, num_add,
1901                                                           NULL);
1902                                 aq_err = pf->hw.aq.asq_last_status;
1903                                 num_add = 0;
1904
1905                                 if (ret)
1906                                         break;
1907                                 memset(add_list, 0, sizeof(*add_list));
1908                         }
1909                 }
1910                 if (num_add) {
1911                         ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1912                                                   add_list, num_add, NULL);
1913                         aq_err = pf->hw.aq.asq_last_status;
1914                         num_add = 0;
1915                 }
1916                 kfree(add_list);
1917                 add_list = NULL;
1918
1919                 if (add_happened && ret && aq_err != I40E_AQ_RC_EINVAL) {
1920                         dev_info(&pf->pdev->dev,
1921                                  "add filter failed, err %s aq_err %s\n",
1922                                  i40e_stat_str(&pf->hw, ret),
1923                                  i40e_aq_str(&pf->hw, aq_err));
1924                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1925                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1926                                       &vsi->state)) {
1927                                 promisc_forced_on = true;
1928                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1929                                         &vsi->state);
1930                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1931                         }
1932                 }
1933         }
1934
1935         /* check for changes in promiscuous modes */
1936         if (changed_flags & IFF_ALLMULTI) {
1937                 bool cur_multipromisc;
1938
1939                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1940                 ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1941                                                             vsi->seid,
1942                                                             cur_multipromisc,
1943                                                             NULL);
1944                 if (ret)
1945                         dev_info(&pf->pdev->dev,
1946                                  "set multi promisc failed, err %s aq_err %s\n",
1947                                  i40e_stat_str(&pf->hw, ret),
1948                                  i40e_aq_str(&pf->hw,
1949                                              pf->hw.aq.asq_last_status));
1950         }
1951         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1952                 bool cur_promisc;
1953
1954                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1955                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1956                                         &vsi->state));
1957                 if (vsi->type == I40E_VSI_MAIN && pf->lan_veb != I40E_NO_VEB) {
1958                         /* set defport ON for Main VSI instead of true promisc
1959                          * this way we will get all unicast/multicast and VLAN
1960                          * promisc behavior but will not get VF or VMDq traffic
1961                          * replicated on the Main VSI.
1962                          */
1963                         if (pf->cur_promisc != cur_promisc) {
1964                                 pf->cur_promisc = cur_promisc;
1965                                 if (grab_rtnl)
1966                                         i40e_do_reset_safe(pf,
1967                                                 BIT(__I40E_PF_RESET_REQUESTED));
1968                                 else
1969                                         i40e_do_reset(pf,
1970                                                 BIT(__I40E_PF_RESET_REQUESTED));
1971                         }
1972                 } else {
1973                         ret = i40e_aq_set_vsi_unicast_promiscuous(
1974                                                           &vsi->back->hw,
1975                                                           vsi->seid,
1976                                                           cur_promisc, NULL);
1977                         if (ret)
1978                                 dev_info(&pf->pdev->dev,
1979                                          "set unicast promisc failed, err %d, aq_err %d\n",
1980                                          ret, pf->hw.aq.asq_last_status);
1981                         ret = i40e_aq_set_vsi_multicast_promiscuous(
1982                                                           &vsi->back->hw,
1983                                                           vsi->seid,
1984                                                           cur_promisc, NULL);
1985                         if (ret)
1986                                 dev_info(&pf->pdev->dev,
1987                                          "set multicast promisc failed, err %d, aq_err %d\n",
1988                                          ret, pf->hw.aq.asq_last_status);
1989                 }
1990                 ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1991                                                 vsi->seid,
1992                                                 cur_promisc, NULL);
1993                 if (ret)
1994                         dev_info(&pf->pdev->dev,
1995                                  "set brdcast promisc failed, err %s, aq_err %s\n",
1996                                  i40e_stat_str(&pf->hw, ret),
1997                                  i40e_aq_str(&pf->hw,
1998                                              pf->hw.aq.asq_last_status));
1999         }
2000
2001         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2002         return 0;
2003 }
2004
2005 /**
2006  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2007  * @pf: board private structure
2008  **/
2009 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2010 {
2011         int v;
2012
2013         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2014                 return;
2015         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2016
2017         for (v = 0; v < pf->num_alloc_vsi; v++) {
2018                 if (pf->vsi[v] &&
2019                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
2020                         i40e_sync_vsi_filters(pf->vsi[v], true);
2021         }
2022 }
2023
2024 /**
2025  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2026  * @netdev: network interface device structure
2027  * @new_mtu: new value for maximum frame size
2028  *
2029  * Returns 0 on success, negative on failure
2030  **/
2031 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2032 {
2033         struct i40e_netdev_priv *np = netdev_priv(netdev);
2034         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2035         struct i40e_vsi *vsi = np->vsi;
2036
2037         /* MTU < 68 is an error and causes problems on some kernels */
2038         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2039                 return -EINVAL;
2040
2041         netdev_info(netdev, "changing MTU from %d to %d\n",
2042                     netdev->mtu, new_mtu);
2043         netdev->mtu = new_mtu;
2044         if (netif_running(netdev))
2045                 i40e_vsi_reinit_locked(vsi);
2046
2047         return 0;
2048 }
2049
2050 /**
2051  * i40e_ioctl - Access the hwtstamp interface
2052  * @netdev: network interface device structure
2053  * @ifr: interface request data
2054  * @cmd: ioctl command
2055  **/
2056 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2057 {
2058         struct i40e_netdev_priv *np = netdev_priv(netdev);
2059         struct i40e_pf *pf = np->vsi->back;
2060
2061         switch (cmd) {
2062         case SIOCGHWTSTAMP:
2063                 return i40e_ptp_get_ts_config(pf, ifr);
2064         case SIOCSHWTSTAMP:
2065                 return i40e_ptp_set_ts_config(pf, ifr);
2066         default:
2067                 return -EOPNOTSUPP;
2068         }
2069 }
2070
2071 /**
2072  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2073  * @vsi: the vsi being adjusted
2074  **/
2075 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2076 {
2077         struct i40e_vsi_context ctxt;
2078         i40e_status ret;
2079
2080         if ((vsi->info.valid_sections &
2081              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2082             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2083                 return;  /* already enabled */
2084
2085         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2086         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2087                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2088
2089         ctxt.seid = vsi->seid;
2090         ctxt.info = vsi->info;
2091         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2092         if (ret) {
2093                 dev_info(&vsi->back->pdev->dev,
2094                          "update vlan stripping failed, err %s aq_err %s\n",
2095                          i40e_stat_str(&vsi->back->hw, ret),
2096                          i40e_aq_str(&vsi->back->hw,
2097                                      vsi->back->hw.aq.asq_last_status));
2098         }
2099 }
2100
2101 /**
2102  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2103  * @vsi: the vsi being adjusted
2104  **/
2105 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2106 {
2107         struct i40e_vsi_context ctxt;
2108         i40e_status ret;
2109
2110         if ((vsi->info.valid_sections &
2111              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2112             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2113              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2114                 return;  /* already disabled */
2115
2116         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2117         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2118                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2119
2120         ctxt.seid = vsi->seid;
2121         ctxt.info = vsi->info;
2122         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2123         if (ret) {
2124                 dev_info(&vsi->back->pdev->dev,
2125                          "update vlan stripping failed, err %s aq_err %s\n",
2126                          i40e_stat_str(&vsi->back->hw, ret),
2127                          i40e_aq_str(&vsi->back->hw,
2128                                      vsi->back->hw.aq.asq_last_status));
2129         }
2130 }
2131
2132 /**
2133  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2134  * @netdev: network interface to be adjusted
2135  * @features: netdev features to test if VLAN offload is enabled or not
2136  **/
2137 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2138 {
2139         struct i40e_netdev_priv *np = netdev_priv(netdev);
2140         struct i40e_vsi *vsi = np->vsi;
2141
2142         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2143                 i40e_vlan_stripping_enable(vsi);
2144         else
2145                 i40e_vlan_stripping_disable(vsi);
2146 }
2147
2148 /**
2149  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2150  * @vsi: the vsi being configured
2151  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2152  **/
2153 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2154 {
2155         struct i40e_mac_filter *f, *add_f;
2156         bool is_netdev, is_vf;
2157
2158         is_vf = (vsi->type == I40E_VSI_SRIOV);
2159         is_netdev = !!(vsi->netdev);
2160
2161         if (is_netdev) {
2162                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2163                                         is_vf, is_netdev);
2164                 if (!add_f) {
2165                         dev_info(&vsi->back->pdev->dev,
2166                                  "Could not add vlan filter %d for %pM\n",
2167                                  vid, vsi->netdev->dev_addr);
2168                         return -ENOMEM;
2169                 }
2170         }
2171
2172         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2173                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2174                 if (!add_f) {
2175                         dev_info(&vsi->back->pdev->dev,
2176                                  "Could not add vlan filter %d for %pM\n",
2177                                  vid, f->macaddr);
2178                         return -ENOMEM;
2179                 }
2180         }
2181
2182         /* Now if we add a vlan tag, make sure to check if it is the first
2183          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2184          * with 0, so we now accept untagged and specified tagged traffic
2185          * (and not any taged and untagged)
2186          */
2187         if (vid > 0) {
2188                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2189                                                   I40E_VLAN_ANY,
2190                                                   is_vf, is_netdev)) {
2191                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2192                                         I40E_VLAN_ANY, is_vf, is_netdev);
2193                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2194                                                 is_vf, is_netdev);
2195                         if (!add_f) {
2196                                 dev_info(&vsi->back->pdev->dev,
2197                                          "Could not add filter 0 for %pM\n",
2198                                          vsi->netdev->dev_addr);
2199                                 return -ENOMEM;
2200                         }
2201                 }
2202         }
2203
2204         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2205         if (vid > 0 && !vsi->info.pvid) {
2206                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2207                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2208                                              is_vf, is_netdev)) {
2209                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2210                                                 is_vf, is_netdev);
2211                                 add_f = i40e_add_filter(vsi, f->macaddr,
2212                                                         0, is_vf, is_netdev);
2213                                 if (!add_f) {
2214                                         dev_info(&vsi->back->pdev->dev,
2215                                                  "Could not add filter 0 for %pM\n",
2216                                                  f->macaddr);
2217                                         return -ENOMEM;
2218                                 }
2219                         }
2220                 }
2221         }
2222
2223         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2224             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2225                 return 0;
2226
2227         return i40e_sync_vsi_filters(vsi, false);
2228 }
2229
2230 /**
2231  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2232  * @vsi: the vsi being configured
2233  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2234  *
2235  * Return: 0 on success or negative otherwise
2236  **/
2237 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2238 {
2239         struct net_device *netdev = vsi->netdev;
2240         struct i40e_mac_filter *f, *add_f;
2241         bool is_vf, is_netdev;
2242         int filter_count = 0;
2243
2244         is_vf = (vsi->type == I40E_VSI_SRIOV);
2245         is_netdev = !!(netdev);
2246
2247         if (is_netdev)
2248                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2249
2250         list_for_each_entry(f, &vsi->mac_filter_list, list)
2251                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2252
2253         /* go through all the filters for this VSI and if there is only
2254          * vid == 0 it means there are no other filters, so vid 0 must
2255          * be replaced with -1. This signifies that we should from now
2256          * on accept any traffic (with any tag present, or untagged)
2257          */
2258         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2259                 if (is_netdev) {
2260                         if (f->vlan &&
2261                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2262                                 filter_count++;
2263                 }
2264
2265                 if (f->vlan)
2266                         filter_count++;
2267         }
2268
2269         if (!filter_count && is_netdev) {
2270                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2271                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2272                                     is_vf, is_netdev);
2273                 if (!f) {
2274                         dev_info(&vsi->back->pdev->dev,
2275                                  "Could not add filter %d for %pM\n",
2276                                  I40E_VLAN_ANY, netdev->dev_addr);
2277                         return -ENOMEM;
2278                 }
2279         }
2280
2281         if (!filter_count) {
2282                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2283                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2284                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2285                                             is_vf, is_netdev);
2286                         if (!add_f) {
2287                                 dev_info(&vsi->back->pdev->dev,
2288                                          "Could not add filter %d for %pM\n",
2289                                          I40E_VLAN_ANY, f->macaddr);
2290                                 return -ENOMEM;
2291                         }
2292                 }
2293         }
2294
2295         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2296             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2297                 return 0;
2298
2299         return i40e_sync_vsi_filters(vsi, false);
2300 }
2301
2302 /**
2303  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2304  * @netdev: network interface to be adjusted
2305  * @vid: vlan id to be added
2306  *
2307  * net_device_ops implementation for adding vlan ids
2308  **/
2309 #ifdef I40E_FCOE
2310 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2311                          __always_unused __be16 proto, u16 vid)
2312 #else
2313 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2314                                 __always_unused __be16 proto, u16 vid)
2315 #endif
2316 {
2317         struct i40e_netdev_priv *np = netdev_priv(netdev);
2318         struct i40e_vsi *vsi = np->vsi;
2319         int ret = 0;
2320
2321         if (vid > 4095)
2322                 return -EINVAL;
2323
2324         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2325
2326         /* If the network stack called us with vid = 0 then
2327          * it is asking to receive priority tagged packets with
2328          * vlan id 0.  Our HW receives them by default when configured
2329          * to receive untagged packets so there is no need to add an
2330          * extra filter for vlan 0 tagged packets.
2331          */
2332         if (vid)
2333                 ret = i40e_vsi_add_vlan(vsi, vid);
2334
2335         if (!ret && (vid < VLAN_N_VID))
2336                 set_bit(vid, vsi->active_vlans);
2337
2338         return ret;
2339 }
2340
2341 /**
2342  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2343  * @netdev: network interface to be adjusted
2344  * @vid: vlan id to be removed
2345  *
2346  * net_device_ops implementation for removing vlan ids
2347  **/
2348 #ifdef I40E_FCOE
2349 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2350                           __always_unused __be16 proto, u16 vid)
2351 #else
2352 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2353                                  __always_unused __be16 proto, u16 vid)
2354 #endif
2355 {
2356         struct i40e_netdev_priv *np = netdev_priv(netdev);
2357         struct i40e_vsi *vsi = np->vsi;
2358
2359         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2360
2361         /* return code is ignored as there is nothing a user
2362          * can do about failure to remove and a log message was
2363          * already printed from the other function
2364          */
2365         i40e_vsi_kill_vlan(vsi, vid);
2366
2367         clear_bit(vid, vsi->active_vlans);
2368
2369         return 0;
2370 }
2371
2372 /**
2373  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2374  * @vsi: the vsi being brought back up
2375  **/
2376 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2377 {
2378         u16 vid;
2379
2380         if (!vsi->netdev)
2381                 return;
2382
2383         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2384
2385         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2386                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2387                                      vid);
2388 }
2389
2390 /**
2391  * i40e_vsi_add_pvid - Add pvid for the VSI
2392  * @vsi: the vsi being adjusted
2393  * @vid: the vlan id to set as a PVID
2394  **/
2395 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2396 {
2397         struct i40e_vsi_context ctxt;
2398         i40e_status ret;
2399
2400         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2401         vsi->info.pvid = cpu_to_le16(vid);
2402         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2403                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2404                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2405
2406         ctxt.seid = vsi->seid;
2407         ctxt.info = vsi->info;
2408         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2409         if (ret) {
2410                 dev_info(&vsi->back->pdev->dev,
2411                          "add pvid failed, err %s aq_err %s\n",
2412                          i40e_stat_str(&vsi->back->hw, ret),
2413                          i40e_aq_str(&vsi->back->hw,
2414                                      vsi->back->hw.aq.asq_last_status));
2415                 return -ENOENT;
2416         }
2417
2418         return 0;
2419 }
2420
2421 /**
2422  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2423  * @vsi: the vsi being adjusted
2424  *
2425  * Just use the vlan_rx_register() service to put it back to normal
2426  **/
2427 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2428 {
2429         i40e_vlan_stripping_disable(vsi);
2430
2431         vsi->info.pvid = 0;
2432 }
2433
2434 /**
2435  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2436  * @vsi: ptr to the VSI
2437  *
2438  * If this function returns with an error, then it's possible one or
2439  * more of the rings is populated (while the rest are not).  It is the
2440  * callers duty to clean those orphaned rings.
2441  *
2442  * Return 0 on success, negative on failure
2443  **/
2444 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2445 {
2446         int i, err = 0;
2447
2448         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2449                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2450
2451         return err;
2452 }
2453
2454 /**
2455  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2456  * @vsi: ptr to the VSI
2457  *
2458  * Free VSI's transmit software resources
2459  **/
2460 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2461 {
2462         int i;
2463
2464         if (!vsi->tx_rings)
2465                 return;
2466
2467         for (i = 0; i < vsi->num_queue_pairs; i++)
2468                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2469                         i40e_free_tx_resources(vsi->tx_rings[i]);
2470 }
2471
2472 /**
2473  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2474  * @vsi: ptr to the VSI
2475  *
2476  * If this function returns with an error, then it's possible one or
2477  * more of the rings is populated (while the rest are not).  It is the
2478  * callers duty to clean those orphaned rings.
2479  *
2480  * Return 0 on success, negative on failure
2481  **/
2482 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2483 {
2484         int i, err = 0;
2485
2486         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2487                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2488 #ifdef I40E_FCOE
2489         i40e_fcoe_setup_ddp_resources(vsi);
2490 #endif
2491         return err;
2492 }
2493
2494 /**
2495  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2496  * @vsi: ptr to the VSI
2497  *
2498  * Free all receive software resources
2499  **/
2500 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2501 {
2502         int i;
2503
2504         if (!vsi->rx_rings)
2505                 return;
2506
2507         for (i = 0; i < vsi->num_queue_pairs; i++)
2508                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2509                         i40e_free_rx_resources(vsi->rx_rings[i]);
2510 #ifdef I40E_FCOE
2511         i40e_fcoe_free_ddp_resources(vsi);
2512 #endif
2513 }
2514
2515 /**
2516  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2517  * @ring: The Tx ring to configure
2518  *
2519  * This enables/disables XPS for a given Tx descriptor ring
2520  * based on the TCs enabled for the VSI that ring belongs to.
2521  **/
2522 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2523 {
2524         struct i40e_vsi *vsi = ring->vsi;
2525         cpumask_var_t mask;
2526
2527         if (!ring->q_vector || !ring->netdev)
2528                 return;
2529
2530         /* Single TC mode enable XPS */
2531         if (vsi->tc_config.numtc <= 1) {
2532                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2533                         netif_set_xps_queue(ring->netdev,
2534                                             &ring->q_vector->affinity_mask,
2535                                             ring->queue_index);
2536         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2537                 /* Disable XPS to allow selection based on TC */
2538                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2539                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2540                 free_cpumask_var(mask);
2541         }
2542 }
2543
2544 /**
2545  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2546  * @ring: The Tx ring to configure
2547  *
2548  * Configure the Tx descriptor ring in the HMC context.
2549  **/
2550 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2551 {
2552         struct i40e_vsi *vsi = ring->vsi;
2553         u16 pf_q = vsi->base_queue + ring->queue_index;
2554         struct i40e_hw *hw = &vsi->back->hw;
2555         struct i40e_hmc_obj_txq tx_ctx;
2556         i40e_status err = 0;
2557         u32 qtx_ctl = 0;
2558
2559         /* some ATR related tx ring init */
2560         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2561                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2562                 ring->atr_count = 0;
2563         } else {
2564                 ring->atr_sample_rate = 0;
2565         }
2566
2567         /* configure XPS */
2568         i40e_config_xps_tx_ring(ring);
2569
2570         /* clear the context structure first */
2571         memset(&tx_ctx, 0, sizeof(tx_ctx));
2572
2573         tx_ctx.new_context = 1;
2574         tx_ctx.base = (ring->dma / 128);
2575         tx_ctx.qlen = ring->count;
2576         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2577                                                I40E_FLAG_FD_ATR_ENABLED));
2578 #ifdef I40E_FCOE
2579         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2580 #endif
2581         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2582         /* FDIR VSI tx ring can still use RS bit and writebacks */
2583         if (vsi->type != I40E_VSI_FDIR)
2584                 tx_ctx.head_wb_ena = 1;
2585         tx_ctx.head_wb_addr = ring->dma +
2586                               (ring->count * sizeof(struct i40e_tx_desc));
2587
2588         /* As part of VSI creation/update, FW allocates certain
2589          * Tx arbitration queue sets for each TC enabled for
2590          * the VSI. The FW returns the handles to these queue
2591          * sets as part of the response buffer to Add VSI,
2592          * Update VSI, etc. AQ commands. It is expected that
2593          * these queue set handles be associated with the Tx
2594          * queues by the driver as part of the TX queue context
2595          * initialization. This has to be done regardless of
2596          * DCB as by default everything is mapped to TC0.
2597          */
2598         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2599         tx_ctx.rdylist_act = 0;
2600
2601         /* clear the context in the HMC */
2602         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2603         if (err) {
2604                 dev_info(&vsi->back->pdev->dev,
2605                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2606                          ring->queue_index, pf_q, err);
2607                 return -ENOMEM;
2608         }
2609
2610         /* set the context in the HMC */
2611         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2612         if (err) {
2613                 dev_info(&vsi->back->pdev->dev,
2614                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2615                          ring->queue_index, pf_q, err);
2616                 return -ENOMEM;
2617         }
2618
2619         /* Now associate this queue with this PCI function */
2620         if (vsi->type == I40E_VSI_VMDQ2) {
2621                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2622                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2623                            I40E_QTX_CTL_VFVM_INDX_MASK;
2624         } else {
2625                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2626         }
2627
2628         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2629                     I40E_QTX_CTL_PF_INDX_MASK);
2630         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2631         i40e_flush(hw);
2632
2633         /* cache tail off for easier writes later */
2634         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2635
2636         return 0;
2637 }
2638
2639 /**
2640  * i40e_configure_rx_ring - Configure a receive ring context
2641  * @ring: The Rx ring to configure
2642  *
2643  * Configure the Rx descriptor ring in the HMC context.
2644  **/
2645 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2646 {
2647         struct i40e_vsi *vsi = ring->vsi;
2648         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2649         u16 pf_q = vsi->base_queue + ring->queue_index;
2650         struct i40e_hw *hw = &vsi->back->hw;
2651         struct i40e_hmc_obj_rxq rx_ctx;
2652         i40e_status err = 0;
2653
2654         ring->state = 0;
2655
2656         /* clear the context structure first */
2657         memset(&rx_ctx, 0, sizeof(rx_ctx));
2658
2659         ring->rx_buf_len = vsi->rx_buf_len;
2660         ring->rx_hdr_len = vsi->rx_hdr_len;
2661
2662         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2663         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2664
2665         rx_ctx.base = (ring->dma / 128);
2666         rx_ctx.qlen = ring->count;
2667
2668         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2669                 set_ring_16byte_desc_enabled(ring);
2670                 rx_ctx.dsize = 0;
2671         } else {
2672                 rx_ctx.dsize = 1;
2673         }
2674
2675         rx_ctx.dtype = vsi->dtype;
2676         if (vsi->dtype) {
2677                 set_ring_ps_enabled(ring);
2678                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2679                                   I40E_RX_SPLIT_IP      |
2680                                   I40E_RX_SPLIT_TCP_UDP |
2681                                   I40E_RX_SPLIT_SCTP;
2682         } else {
2683                 rx_ctx.hsplit_0 = 0;
2684         }
2685
2686         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2687                                   (chain_len * ring->rx_buf_len));
2688         if (hw->revision_id == 0)
2689                 rx_ctx.lrxqthresh = 0;
2690         else
2691                 rx_ctx.lrxqthresh = 2;
2692         rx_ctx.crcstrip = 1;
2693         rx_ctx.l2tsel = 1;
2694         /* this controls whether VLAN is stripped from inner headers */
2695         rx_ctx.showiv = 0;
2696 #ifdef I40E_FCOE
2697         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2698 #endif
2699         /* set the prefena field to 1 because the manual says to */
2700         rx_ctx.prefena = 1;
2701
2702         /* clear the context in the HMC */
2703         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2704         if (err) {
2705                 dev_info(&vsi->back->pdev->dev,
2706                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2707                          ring->queue_index, pf_q, err);
2708                 return -ENOMEM;
2709         }
2710
2711         /* set the context in the HMC */
2712         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2713         if (err) {
2714                 dev_info(&vsi->back->pdev->dev,
2715                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2716                          ring->queue_index, pf_q, err);
2717                 return -ENOMEM;
2718         }
2719
2720         /* cache tail for quicker writes, and clear the reg before use */
2721         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2722         writel(0, ring->tail);
2723
2724         if (ring_is_ps_enabled(ring)) {
2725                 i40e_alloc_rx_headers(ring);
2726                 i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
2727         } else {
2728                 i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
2729         }
2730
2731         return 0;
2732 }
2733
2734 /**
2735  * i40e_vsi_configure_tx - Configure the VSI for Tx
2736  * @vsi: VSI structure describing this set of rings and resources
2737  *
2738  * Configure the Tx VSI for operation.
2739  **/
2740 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2741 {
2742         int err = 0;
2743         u16 i;
2744
2745         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2746                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2747
2748         return err;
2749 }
2750
2751 /**
2752  * i40e_vsi_configure_rx - Configure the VSI for Rx
2753  * @vsi: the VSI being configured
2754  *
2755  * Configure the Rx VSI for operation.
2756  **/
2757 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2758 {
2759         int err = 0;
2760         u16 i;
2761
2762         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2763                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2764                                + ETH_FCS_LEN + VLAN_HLEN;
2765         else
2766                 vsi->max_frame = I40E_RXBUFFER_2048;
2767
2768         /* figure out correct receive buffer length */
2769         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2770                                     I40E_FLAG_RX_PS_ENABLED)) {
2771         case I40E_FLAG_RX_1BUF_ENABLED:
2772                 vsi->rx_hdr_len = 0;
2773                 vsi->rx_buf_len = vsi->max_frame;
2774                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2775                 break;
2776         case I40E_FLAG_RX_PS_ENABLED:
2777                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2778                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2779                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2780                 break;
2781         default:
2782                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2783                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2784                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2785                 break;
2786         }
2787
2788 #ifdef I40E_FCOE
2789         /* setup rx buffer for FCoE */
2790         if ((vsi->type == I40E_VSI_FCOE) &&
2791             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2792                 vsi->rx_hdr_len = 0;
2793                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2794                 vsi->max_frame = I40E_RXBUFFER_3072;
2795                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2796         }
2797
2798 #endif /* I40E_FCOE */
2799         /* round up for the chip's needs */
2800         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2801                                 BIT_ULL(I40E_RXQ_CTX_HBUFF_SHIFT));
2802         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2803                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
2804
2805         /* set up individual rings */
2806         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2807                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2808
2809         return err;
2810 }
2811
2812 /**
2813  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2814  * @vsi: ptr to the VSI
2815  **/
2816 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2817 {
2818         struct i40e_ring *tx_ring, *rx_ring;
2819         u16 qoffset, qcount;
2820         int i, n;
2821
2822         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
2823                 /* Reset the TC information */
2824                 for (i = 0; i < vsi->num_queue_pairs; i++) {
2825                         rx_ring = vsi->rx_rings[i];
2826                         tx_ring = vsi->tx_rings[i];
2827                         rx_ring->dcb_tc = 0;
2828                         tx_ring->dcb_tc = 0;
2829                 }
2830         }
2831
2832         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2833                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
2834                         continue;
2835
2836                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2837                 qcount = vsi->tc_config.tc_info[n].qcount;
2838                 for (i = qoffset; i < (qoffset + qcount); i++) {
2839                         rx_ring = vsi->rx_rings[i];
2840                         tx_ring = vsi->tx_rings[i];
2841                         rx_ring->dcb_tc = n;
2842                         tx_ring->dcb_tc = n;
2843                 }
2844         }
2845 }
2846
2847 /**
2848  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2849  * @vsi: ptr to the VSI
2850  **/
2851 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2852 {
2853         if (vsi->netdev)
2854                 i40e_set_rx_mode(vsi->netdev);
2855 }
2856
2857 /**
2858  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2859  * @vsi: Pointer to the targeted VSI
2860  *
2861  * This function replays the hlist on the hw where all the SB Flow Director
2862  * filters were saved.
2863  **/
2864 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2865 {
2866         struct i40e_fdir_filter *filter;
2867         struct i40e_pf *pf = vsi->back;
2868         struct hlist_node *node;
2869
2870         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2871                 return;
2872
2873         hlist_for_each_entry_safe(filter, node,
2874                                   &pf->fdir_filter_list, fdir_node) {
2875                 i40e_add_del_fdir(vsi, filter, true);
2876         }
2877 }
2878
2879 /**
2880  * i40e_vsi_configure - Set up the VSI for action
2881  * @vsi: the VSI being configured
2882  **/
2883 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2884 {
2885         int err;
2886
2887         i40e_set_vsi_rx_mode(vsi);
2888         i40e_restore_vlan(vsi);
2889         i40e_vsi_config_dcb_rings(vsi);
2890         err = i40e_vsi_configure_tx(vsi);
2891         if (!err)
2892                 err = i40e_vsi_configure_rx(vsi);
2893
2894         return err;
2895 }
2896
2897 /**
2898  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2899  * @vsi: the VSI being configured
2900  **/
2901 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2902 {
2903         struct i40e_pf *pf = vsi->back;
2904         struct i40e_hw *hw = &pf->hw;
2905         u16 vector;
2906         int i, q;
2907         u32 qp;
2908
2909         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2910          * and PFINT_LNKLSTn registers, e.g.:
2911          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2912          */
2913         qp = vsi->base_queue;
2914         vector = vsi->base_vector;
2915         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2916                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
2917
2918                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2919                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2920                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2921                      q_vector->rx.itr);
2922                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2923                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2924                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2925                      q_vector->tx.itr);
2926                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
2927                      INTRL_USEC_TO_REG(vsi->int_rate_limit));
2928
2929                 /* Linked list for the queuepairs assigned to this vector */
2930                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2931                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2932                         u32 val;
2933
2934                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2935                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2936                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2937                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2938                               (I40E_QUEUE_TYPE_TX
2939                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2940
2941                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2942
2943                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2944                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2945                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2946                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2947                               (I40E_QUEUE_TYPE_RX
2948                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2949
2950                         /* Terminate the linked list */
2951                         if (q == (q_vector->num_ringpairs - 1))
2952                                 val |= (I40E_QUEUE_END_OF_LIST
2953                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2954
2955                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2956                         qp++;
2957                 }
2958         }
2959
2960         i40e_flush(hw);
2961 }
2962
2963 /**
2964  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2965  * @hw: ptr to the hardware info
2966  **/
2967 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
2968 {
2969         struct i40e_hw *hw = &pf->hw;
2970         u32 val;
2971
2972         /* clear things first */
2973         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2974         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2975
2976         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2977               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2978               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2979               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2980               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2981               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2982               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2983               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2984
2985         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
2986                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
2987
2988         if (pf->flags & I40E_FLAG_PTP)
2989                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
2990
2991         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2992
2993         /* SW_ITR_IDX = 0, but don't change INTENA */
2994         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2995                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2996
2997         /* OTHER_ITR_IDX = 0 */
2998         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2999 }
3000
3001 /**
3002  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3003  * @vsi: the VSI being configured
3004  **/
3005 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3006 {
3007         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3008         struct i40e_pf *pf = vsi->back;
3009         struct i40e_hw *hw = &pf->hw;
3010         u32 val;
3011
3012         /* set the ITR configuration */
3013         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3014         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3015         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3016         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3017         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3018         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3019
3020         i40e_enable_misc_int_causes(pf);
3021
3022         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3023         wr32(hw, I40E_PFINT_LNKLST0, 0);
3024
3025         /* Associate the queue pair to the vector and enable the queue int */
3026         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3027               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3028               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3029
3030         wr32(hw, I40E_QINT_RQCTL(0), val);
3031
3032         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3033               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3034               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3035
3036         wr32(hw, I40E_QINT_TQCTL(0), val);
3037         i40e_flush(hw);
3038 }
3039
3040 /**
3041  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3042  * @pf: board private structure
3043  **/
3044 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3045 {
3046         struct i40e_hw *hw = &pf->hw;
3047
3048         wr32(hw, I40E_PFINT_DYN_CTL0,
3049              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3050         i40e_flush(hw);
3051 }
3052
3053 /**
3054  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3055  * @pf: board private structure
3056  **/
3057 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
3058 {
3059         struct i40e_hw *hw = &pf->hw;
3060         u32 val;
3061
3062         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3063               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
3064               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3065
3066         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3067         i40e_flush(hw);
3068 }
3069
3070 /**
3071  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
3072  * @vsi: pointer to a vsi
3073  * @vector: disable a particular Hw Interrupt vector
3074  **/
3075 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
3076 {
3077         struct i40e_pf *pf = vsi->back;
3078         struct i40e_hw *hw = &pf->hw;
3079         u32 val;
3080
3081         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
3082         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
3083         i40e_flush(hw);
3084 }
3085
3086 /**
3087  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3088  * @irq: interrupt number
3089  * @data: pointer to a q_vector
3090  **/
3091 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3092 {
3093         struct i40e_q_vector *q_vector = data;
3094
3095         if (!q_vector->tx.ring && !q_vector->rx.ring)
3096                 return IRQ_HANDLED;
3097
3098         napi_schedule(&q_vector->napi);
3099
3100         return IRQ_HANDLED;
3101 }
3102
3103 /**
3104  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3105  * @vsi: the VSI being configured
3106  * @basename: name for the vector
3107  *
3108  * Allocates MSI-X vectors and requests interrupts from the kernel.
3109  **/
3110 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3111 {
3112         int q_vectors = vsi->num_q_vectors;
3113         struct i40e_pf *pf = vsi->back;
3114         int base = vsi->base_vector;
3115         int rx_int_idx = 0;
3116         int tx_int_idx = 0;
3117         int vector, err;
3118
3119         for (vector = 0; vector < q_vectors; vector++) {
3120                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3121
3122                 if (q_vector->tx.ring && q_vector->rx.ring) {
3123                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3124                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3125                         tx_int_idx++;
3126                 } else if (q_vector->rx.ring) {
3127                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3128                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3129                 } else if (q_vector->tx.ring) {
3130                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3131                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3132                 } else {
3133                         /* skip this unused q_vector */
3134                         continue;
3135                 }
3136                 err = request_irq(pf->msix_entries[base + vector].vector,
3137                                   vsi->irq_handler,
3138                                   0,
3139                                   q_vector->name,
3140                                   q_vector);
3141                 if (err) {
3142                         dev_info(&pf->pdev->dev,
3143                                  "MSIX request_irq failed, error: %d\n", err);
3144                         goto free_queue_irqs;
3145                 }
3146                 /* assign the mask for this irq */
3147                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3148                                       &q_vector->affinity_mask);
3149         }
3150
3151         vsi->irqs_ready = true;
3152         return 0;
3153
3154 free_queue_irqs:
3155         while (vector) {
3156                 vector--;
3157                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3158                                       NULL);
3159                 free_irq(pf->msix_entries[base + vector].vector,
3160                          &(vsi->q_vectors[vector]));
3161         }
3162         return err;
3163 }
3164
3165 /**
3166  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3167  * @vsi: the VSI being un-configured
3168  **/
3169 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3170 {
3171         struct i40e_pf *pf = vsi->back;
3172         struct i40e_hw *hw = &pf->hw;
3173         int base = vsi->base_vector;
3174         int i;
3175
3176         for (i = 0; i < vsi->num_queue_pairs; i++) {
3177                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3178                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3179         }
3180
3181         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3182                 for (i = vsi->base_vector;
3183                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3184                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3185
3186                 i40e_flush(hw);
3187                 for (i = 0; i < vsi->num_q_vectors; i++)
3188                         synchronize_irq(pf->msix_entries[i + base].vector);
3189         } else {
3190                 /* Legacy and MSI mode - this stops all interrupt handling */
3191                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3192                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3193                 i40e_flush(hw);
3194                 synchronize_irq(pf->pdev->irq);
3195         }
3196 }
3197
3198 /**
3199  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3200  * @vsi: the VSI being configured
3201  **/
3202 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3203 {
3204         struct i40e_pf *pf = vsi->back;
3205         int i;
3206
3207         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3208                 for (i = 0; i < vsi->num_q_vectors; i++)
3209                         i40e_irq_dynamic_enable(vsi, i);
3210         } else {
3211                 i40e_irq_dynamic_enable_icr0(pf);
3212         }
3213
3214         i40e_flush(&pf->hw);
3215         return 0;
3216 }
3217
3218 /**
3219  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3220  * @pf: board private structure
3221  **/
3222 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3223 {
3224         /* Disable ICR 0 */
3225         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3226         i40e_flush(&pf->hw);
3227 }
3228
3229 /**
3230  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3231  * @irq: interrupt number
3232  * @data: pointer to a q_vector
3233  *
3234  * This is the handler used for all MSI/Legacy interrupts, and deals
3235  * with both queue and non-queue interrupts.  This is also used in
3236  * MSIX mode to handle the non-queue interrupts.
3237  **/
3238 static irqreturn_t i40e_intr(int irq, void *data)
3239 {
3240         struct i40e_pf *pf = (struct i40e_pf *)data;
3241         struct i40e_hw *hw = &pf->hw;
3242         irqreturn_t ret = IRQ_NONE;
3243         u32 icr0, icr0_remaining;
3244         u32 val, ena_mask;
3245
3246         icr0 = rd32(hw, I40E_PFINT_ICR0);
3247         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3248
3249         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3250         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3251                 goto enable_intr;
3252
3253         /* if interrupt but no bits showing, must be SWINT */
3254         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3255             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3256                 pf->sw_int_count++;
3257
3258         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3259             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3260                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3261                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3262                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3263         }
3264
3265         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3266         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3267
3268                 /* temporarily disable queue cause for NAPI processing */
3269                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3270
3271                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3272                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3273
3274                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3275                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3276                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3277
3278                 if (!test_bit(__I40E_DOWN, &pf->state))
3279                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
3280         }
3281
3282         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3283                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3284                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3285         }
3286
3287         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3288                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3289                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3290         }
3291
3292         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3293                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3294                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3295         }
3296
3297         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3298                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3299                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3300                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3301                 val = rd32(hw, I40E_GLGEN_RSTAT);
3302                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3303                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3304                 if (val == I40E_RESET_CORER) {
3305                         pf->corer_count++;
3306                 } else if (val == I40E_RESET_GLOBR) {
3307                         pf->globr_count++;
3308                 } else if (val == I40E_RESET_EMPR) {
3309                         pf->empr_count++;
3310                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3311                 }
3312         }
3313
3314         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3315                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3316                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3317                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3318                          rd32(hw, I40E_PFHMC_ERRORINFO),
3319                          rd32(hw, I40E_PFHMC_ERRORDATA));
3320         }
3321
3322         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3323                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3324
3325                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3326                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3327                         i40e_ptp_tx_hwtstamp(pf);
3328                 }
3329         }
3330
3331         /* If a critical error is pending we have no choice but to reset the
3332          * device.
3333          * Report and mask out any remaining unexpected interrupts.
3334          */
3335         icr0_remaining = icr0 & ena_mask;
3336         if (icr0_remaining) {
3337                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3338                          icr0_remaining);
3339                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3340                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3341                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3342                         dev_info(&pf->pdev->dev, "device will be reset\n");
3343                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3344                         i40e_service_event_schedule(pf);
3345                 }
3346                 ena_mask &= ~icr0_remaining;
3347         }
3348         ret = IRQ_HANDLED;
3349
3350 enable_intr:
3351         /* re-enable interrupt causes */
3352         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3353         if (!test_bit(__I40E_DOWN, &pf->state)) {
3354                 i40e_service_event_schedule(pf);
3355                 i40e_irq_dynamic_enable_icr0(pf);
3356         }
3357
3358         return ret;
3359 }
3360
3361 /**
3362  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3363  * @tx_ring:  tx ring to clean
3364  * @budget:   how many cleans we're allowed
3365  *
3366  * Returns true if there's any budget left (e.g. the clean is finished)
3367  **/
3368 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3369 {
3370         struct i40e_vsi *vsi = tx_ring->vsi;
3371         u16 i = tx_ring->next_to_clean;
3372         struct i40e_tx_buffer *tx_buf;
3373         struct i40e_tx_desc *tx_desc;
3374
3375         tx_buf = &tx_ring->tx_bi[i];
3376         tx_desc = I40E_TX_DESC(tx_ring, i);
3377         i -= tx_ring->count;
3378
3379         do {
3380                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3381
3382                 /* if next_to_watch is not set then there is no work pending */
3383                 if (!eop_desc)
3384                         break;
3385
3386                 /* prevent any other reads prior to eop_desc */
3387                 read_barrier_depends();
3388
3389                 /* if the descriptor isn't done, no work yet to do */
3390                 if (!(eop_desc->cmd_type_offset_bsz &
3391                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3392                         break;
3393
3394                 /* clear next_to_watch to prevent false hangs */
3395                 tx_buf->next_to_watch = NULL;
3396
3397                 tx_desc->buffer_addr = 0;
3398                 tx_desc->cmd_type_offset_bsz = 0;
3399                 /* move past filter desc */
3400                 tx_buf++;
3401                 tx_desc++;
3402                 i++;
3403                 if (unlikely(!i)) {
3404                         i -= tx_ring->count;
3405                         tx_buf = tx_ring->tx_bi;
3406                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3407                 }
3408                 /* unmap skb header data */
3409                 dma_unmap_single(tx_ring->dev,
3410                                  dma_unmap_addr(tx_buf, dma),
3411                                  dma_unmap_len(tx_buf, len),
3412                                  DMA_TO_DEVICE);
3413                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3414                         kfree(tx_buf->raw_buf);
3415
3416                 tx_buf->raw_buf = NULL;
3417                 tx_buf->tx_flags = 0;
3418                 tx_buf->next_to_watch = NULL;
3419                 dma_unmap_len_set(tx_buf, len, 0);
3420                 tx_desc->buffer_addr = 0;
3421                 tx_desc->cmd_type_offset_bsz = 0;
3422
3423                 /* move us past the eop_desc for start of next FD desc */
3424                 tx_buf++;
3425                 tx_desc++;
3426                 i++;
3427                 if (unlikely(!i)) {
3428                         i -= tx_ring->count;
3429                         tx_buf = tx_ring->tx_bi;
3430                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3431                 }
3432
3433                 /* update budget accounting */
3434                 budget--;
3435         } while (likely(budget));
3436
3437         i += tx_ring->count;
3438         tx_ring->next_to_clean = i;
3439
3440         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
3441                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3442
3443         return budget > 0;
3444 }
3445
3446 /**
3447  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3448  * @irq: interrupt number
3449  * @data: pointer to a q_vector
3450  **/
3451 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3452 {
3453         struct i40e_q_vector *q_vector = data;
3454         struct i40e_vsi *vsi;
3455
3456         if (!q_vector->tx.ring)
3457                 return IRQ_HANDLED;
3458
3459         vsi = q_vector->tx.ring->vsi;
3460         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3461
3462         return IRQ_HANDLED;
3463 }
3464
3465 /**
3466  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3467  * @vsi: the VSI being configured
3468  * @v_idx: vector index
3469  * @qp_idx: queue pair index
3470  **/
3471 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3472 {
3473         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3474         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3475         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3476
3477         tx_ring->q_vector = q_vector;
3478         tx_ring->next = q_vector->tx.ring;
3479         q_vector->tx.ring = tx_ring;
3480         q_vector->tx.count++;
3481
3482         rx_ring->q_vector = q_vector;
3483         rx_ring->next = q_vector->rx.ring;
3484         q_vector->rx.ring = rx_ring;
3485         q_vector->rx.count++;
3486 }
3487
3488 /**
3489  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3490  * @vsi: the VSI being configured
3491  *
3492  * This function maps descriptor rings to the queue-specific vectors
3493  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3494  * one vector per queue pair, but on a constrained vector budget, we
3495  * group the queue pairs as "efficiently" as possible.
3496  **/
3497 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3498 {
3499         int qp_remaining = vsi->num_queue_pairs;
3500         int q_vectors = vsi->num_q_vectors;
3501         int num_ringpairs;
3502         int v_start = 0;
3503         int qp_idx = 0;
3504
3505         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3506          * group them so there are multiple queues per vector.
3507          * It is also important to go through all the vectors available to be
3508          * sure that if we don't use all the vectors, that the remaining vectors
3509          * are cleared. This is especially important when decreasing the
3510          * number of queues in use.
3511          */
3512         for (; v_start < q_vectors; v_start++) {
3513                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3514
3515                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3516
3517                 q_vector->num_ringpairs = num_ringpairs;
3518
3519                 q_vector->rx.count = 0;
3520                 q_vector->tx.count = 0;
3521                 q_vector->rx.ring = NULL;
3522                 q_vector->tx.ring = NULL;
3523
3524                 while (num_ringpairs--) {
3525                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3526                         qp_idx++;
3527                         qp_remaining--;
3528                 }
3529         }
3530 }
3531
3532 /**
3533  * i40e_vsi_request_irq - Request IRQ from the OS
3534  * @vsi: the VSI being configured
3535  * @basename: name for the vector
3536  **/
3537 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3538 {
3539         struct i40e_pf *pf = vsi->back;
3540         int err;
3541
3542         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3543                 err = i40e_vsi_request_irq_msix(vsi, basename);
3544         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3545                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3546                                   pf->int_name, pf);
3547         else
3548                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3549                                   pf->int_name, pf);
3550
3551         if (err)
3552                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3553
3554         return err;
3555 }
3556
3557 #ifdef CONFIG_NET_POLL_CONTROLLER
3558 /**
3559  * i40e_netpoll - A Polling 'interrupt'handler
3560  * @netdev: network interface device structure
3561  *
3562  * This is used by netconsole to send skbs without having to re-enable
3563  * interrupts.  It's not called while the normal interrupt routine is executing.
3564  **/
3565 #ifdef I40E_FCOE
3566 void i40e_netpoll(struct net_device *netdev)
3567 #else
3568 static void i40e_netpoll(struct net_device *netdev)
3569 #endif
3570 {
3571         struct i40e_netdev_priv *np = netdev_priv(netdev);
3572         struct i40e_vsi *vsi = np->vsi;
3573         struct i40e_pf *pf = vsi->back;
3574         int i;
3575
3576         /* if interface is down do nothing */
3577         if (test_bit(__I40E_DOWN, &vsi->state))
3578                 return;
3579
3580         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3581                 for (i = 0; i < vsi->num_q_vectors; i++)
3582                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3583         } else {
3584                 i40e_intr(pf->pdev->irq, netdev);
3585         }
3586 }
3587 #endif
3588
3589 /**
3590  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3591  * @pf: the PF being configured
3592  * @pf_q: the PF queue
3593  * @enable: enable or disable state of the queue
3594  *
3595  * This routine will wait for the given Tx queue of the PF to reach the
3596  * enabled or disabled state.
3597  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3598  * multiple retries; else will return 0 in case of success.
3599  **/
3600 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3601 {
3602         int i;
3603         u32 tx_reg;
3604
3605         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3606                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3607                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3608                         break;
3609
3610                 usleep_range(10, 20);
3611         }
3612         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3613                 return -ETIMEDOUT;
3614
3615         return 0;
3616 }
3617
3618 /**
3619  * i40e_vsi_control_tx - Start or stop a VSI's rings
3620  * @vsi: the VSI being configured
3621  * @enable: start or stop the rings
3622  **/
3623 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3624 {
3625         struct i40e_pf *pf = vsi->back;
3626         struct i40e_hw *hw = &pf->hw;
3627         int i, j, pf_q, ret = 0;
3628         u32 tx_reg;
3629
3630         pf_q = vsi->base_queue;
3631         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3632
3633                 /* warn the TX unit of coming changes */
3634                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3635                 if (!enable)
3636                         usleep_range(10, 20);
3637
3638                 for (j = 0; j < 50; j++) {
3639                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3640                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3641                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3642                                 break;
3643                         usleep_range(1000, 2000);
3644                 }
3645                 /* Skip if the queue is already in the requested state */
3646                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3647                         continue;
3648
3649                 /* turn on/off the queue */
3650                 if (enable) {
3651                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3652                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3653                 } else {
3654                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3655                 }
3656
3657                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3658                 /* No waiting for the Tx queue to disable */
3659                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3660                         continue;
3661
3662                 /* wait for the change to finish */
3663                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3664                 if (ret) {
3665                         dev_info(&pf->pdev->dev,
3666                                  "VSI seid %d Tx ring %d %sable timeout\n",
3667                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3668                         break;
3669                 }
3670         }
3671
3672         if (hw->revision_id == 0)
3673                 mdelay(50);
3674         return ret;
3675 }
3676
3677 /**
3678  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3679  * @pf: the PF being configured
3680  * @pf_q: the PF queue
3681  * @enable: enable or disable state of the queue
3682  *
3683  * This routine will wait for the given Rx queue of the PF to reach the
3684  * enabled or disabled state.
3685  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3686  * multiple retries; else will return 0 in case of success.
3687  **/
3688 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3689 {
3690         int i;
3691         u32 rx_reg;
3692
3693         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3694                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3695                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3696                         break;
3697
3698                 usleep_range(10, 20);
3699         }
3700         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3701                 return -ETIMEDOUT;
3702
3703         return 0;
3704 }
3705
3706 /**
3707  * i40e_vsi_control_rx - Start or stop a VSI's rings
3708  * @vsi: the VSI being configured
3709  * @enable: start or stop the rings
3710  **/
3711 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3712 {
3713         struct i40e_pf *pf = vsi->back;
3714         struct i40e_hw *hw = &pf->hw;
3715         int i, j, pf_q, ret = 0;
3716         u32 rx_reg;
3717
3718         pf_q = vsi->base_queue;
3719         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3720                 for (j = 0; j < 50; j++) {
3721                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3722                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3723                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3724                                 break;
3725                         usleep_range(1000, 2000);
3726                 }
3727
3728                 /* Skip if the queue is already in the requested state */
3729                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3730                         continue;
3731
3732                 /* turn on/off the queue */
3733                 if (enable)
3734                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3735                 else
3736                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3737                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3738
3739                 /* wait for the change to finish */
3740                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3741                 if (ret) {
3742                         dev_info(&pf->pdev->dev,
3743                                  "VSI seid %d Rx ring %d %sable timeout\n",
3744                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3745                         break;
3746                 }
3747         }
3748
3749         return ret;
3750 }
3751
3752 /**
3753  * i40e_vsi_control_rings - Start or stop a VSI's rings
3754  * @vsi: the VSI being configured
3755  * @enable: start or stop the rings
3756  **/
3757 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3758 {
3759         int ret = 0;
3760
3761         /* do rx first for enable and last for disable */
3762         if (request) {
3763                 ret = i40e_vsi_control_rx(vsi, request);
3764                 if (ret)
3765                         return ret;
3766                 ret = i40e_vsi_control_tx(vsi, request);
3767         } else {
3768                 /* Ignore return value, we need to shutdown whatever we can */
3769                 i40e_vsi_control_tx(vsi, request);
3770                 i40e_vsi_control_rx(vsi, request);
3771         }
3772
3773         return ret;
3774 }
3775
3776 /**
3777  * i40e_vsi_free_irq - Free the irq association with the OS
3778  * @vsi: the VSI being configured
3779  **/
3780 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3781 {
3782         struct i40e_pf *pf = vsi->back;
3783         struct i40e_hw *hw = &pf->hw;
3784         int base = vsi->base_vector;
3785         u32 val, qp;
3786         int i;
3787
3788         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3789                 if (!vsi->q_vectors)
3790                         return;
3791
3792                 if (!vsi->irqs_ready)
3793                         return;
3794
3795                 vsi->irqs_ready = false;
3796                 for (i = 0; i < vsi->num_q_vectors; i++) {
3797                         u16 vector = i + base;
3798
3799                         /* free only the irqs that were actually requested */
3800                         if (!vsi->q_vectors[i] ||
3801                             !vsi->q_vectors[i]->num_ringpairs)
3802                                 continue;
3803
3804                         /* clear the affinity_mask in the IRQ descriptor */
3805                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3806                                               NULL);
3807                         free_irq(pf->msix_entries[vector].vector,
3808                                  vsi->q_vectors[i]);
3809
3810                         /* Tear down the interrupt queue link list
3811                          *
3812                          * We know that they come in pairs and always
3813                          * the Rx first, then the Tx.  To clear the
3814                          * link list, stick the EOL value into the
3815                          * next_q field of the registers.
3816                          */
3817                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3818                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3819                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3820                         val |= I40E_QUEUE_END_OF_LIST
3821                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3822                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3823
3824                         while (qp != I40E_QUEUE_END_OF_LIST) {
3825                                 u32 next;
3826
3827                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3828
3829                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3830                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3831                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3832                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3833
3834                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3835                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3836
3837                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3838
3839                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3840
3841                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3842                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3843
3844                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3845                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3846                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3847                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3848
3849                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3850                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3851
3852                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3853                                 qp = next;
3854                         }
3855                 }
3856         } else {
3857                 free_irq(pf->pdev->irq, pf);
3858
3859                 val = rd32(hw, I40E_PFINT_LNKLST0);
3860                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3861                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3862                 val |= I40E_QUEUE_END_OF_LIST
3863                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3864                 wr32(hw, I40E_PFINT_LNKLST0, val);
3865
3866                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3867                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3868                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3869                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3870                          I40E_QINT_RQCTL_INTEVENT_MASK);
3871
3872                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3873                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3874
3875                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3876
3877                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3878
3879                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3880                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3881                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3882                          I40E_QINT_TQCTL_INTEVENT_MASK);
3883
3884                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3885                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3886
3887                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3888         }
3889 }
3890
3891 /**
3892  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3893  * @vsi: the VSI being configured
3894  * @v_idx: Index of vector to be freed
3895  *
3896  * This function frees the memory allocated to the q_vector.  In addition if
3897  * NAPI is enabled it will delete any references to the NAPI struct prior
3898  * to freeing the q_vector.
3899  **/
3900 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3901 {
3902         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3903         struct i40e_ring *ring;
3904
3905         if (!q_vector)
3906                 return;
3907
3908         /* disassociate q_vector from rings */
3909         i40e_for_each_ring(ring, q_vector->tx)
3910                 ring->q_vector = NULL;
3911
3912         i40e_for_each_ring(ring, q_vector->rx)
3913                 ring->q_vector = NULL;
3914
3915         /* only VSI w/ an associated netdev is set up w/ NAPI */
3916         if (vsi->netdev)
3917                 netif_napi_del(&q_vector->napi);
3918
3919         vsi->q_vectors[v_idx] = NULL;
3920
3921         kfree_rcu(q_vector, rcu);
3922 }
3923
3924 /**
3925  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3926  * @vsi: the VSI being un-configured
3927  *
3928  * This frees the memory allocated to the q_vectors and
3929  * deletes references to the NAPI struct.
3930  **/
3931 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3932 {
3933         int v_idx;
3934
3935         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3936                 i40e_free_q_vector(vsi, v_idx);
3937 }
3938
3939 /**
3940  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3941  * @pf: board private structure
3942  **/
3943 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3944 {
3945         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3946         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3947                 pci_disable_msix(pf->pdev);
3948                 kfree(pf->msix_entries);
3949                 pf->msix_entries = NULL;
3950                 kfree(pf->irq_pile);
3951                 pf->irq_pile = NULL;
3952         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3953                 pci_disable_msi(pf->pdev);
3954         }
3955         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3956 }
3957
3958 /**
3959  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3960  * @pf: board private structure
3961  *
3962  * We go through and clear interrupt specific resources and reset the structure
3963  * to pre-load conditions
3964  **/
3965 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3966 {
3967         int i;
3968
3969         i40e_stop_misc_vector(pf);
3970         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3971                 synchronize_irq(pf->msix_entries[0].vector);
3972                 free_irq(pf->msix_entries[0].vector, pf);
3973         }
3974
3975         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3976         for (i = 0; i < pf->num_alloc_vsi; i++)
3977                 if (pf->vsi[i])
3978                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3979         i40e_reset_interrupt_capability(pf);
3980 }
3981
3982 /**
3983  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3984  * @vsi: the VSI being configured
3985  **/
3986 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3987 {
3988         int q_idx;
3989
3990         if (!vsi->netdev)
3991                 return;
3992
3993         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3994                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3995 }
3996
3997 /**
3998  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3999  * @vsi: the VSI being configured
4000  **/
4001 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4002 {
4003         int q_idx;
4004
4005         if (!vsi->netdev)
4006                 return;
4007
4008         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4009                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4010 }
4011
4012 /**
4013  * i40e_vsi_close - Shut down a VSI
4014  * @vsi: the vsi to be quelled
4015  **/
4016 static void i40e_vsi_close(struct i40e_vsi *vsi)
4017 {
4018         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4019                 i40e_down(vsi);
4020         i40e_vsi_free_irq(vsi);
4021         i40e_vsi_free_tx_resources(vsi);
4022         i40e_vsi_free_rx_resources(vsi);
4023         vsi->current_netdev_flags = 0;
4024 }
4025
4026 /**
4027  * i40e_quiesce_vsi - Pause a given VSI
4028  * @vsi: the VSI being paused
4029  **/
4030 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4031 {
4032         if (test_bit(__I40E_DOWN, &vsi->state))
4033                 return;
4034
4035         /* No need to disable FCoE VSI when Tx suspended */
4036         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4037             vsi->type == I40E_VSI_FCOE) {
4038                 dev_dbg(&vsi->back->pdev->dev,
4039                          "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4040                 return;
4041         }
4042
4043         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4044         if (vsi->netdev && netif_running(vsi->netdev))
4045                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4046         else
4047                 i40e_vsi_close(vsi);
4048 }
4049
4050 /**
4051  * i40e_unquiesce_vsi - Resume a given VSI
4052  * @vsi: the VSI being resumed
4053  **/
4054 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4055 {
4056         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4057                 return;
4058
4059         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4060         if (vsi->netdev && netif_running(vsi->netdev))
4061                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4062         else
4063                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4064 }
4065
4066 /**
4067  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4068  * @pf: the PF
4069  **/
4070 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4071 {
4072         int v;
4073
4074         for (v = 0; v < pf->num_alloc_vsi; v++) {
4075                 if (pf->vsi[v])
4076                         i40e_quiesce_vsi(pf->vsi[v]);
4077         }
4078 }
4079
4080 /**
4081  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4082  * @pf: the PF
4083  **/
4084 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4085 {
4086         int v;
4087
4088         for (v = 0; v < pf->num_alloc_vsi; v++) {
4089                 if (pf->vsi[v])
4090                         i40e_unquiesce_vsi(pf->vsi[v]);
4091         }
4092 }
4093
4094 #ifdef CONFIG_I40E_DCB
4095 /**
4096  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
4097  * @vsi: the VSI being configured
4098  *
4099  * This function waits for the given VSI's Tx queues to be disabled.
4100  **/
4101 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
4102 {
4103         struct i40e_pf *pf = vsi->back;
4104         int i, pf_q, ret;
4105
4106         pf_q = vsi->base_queue;
4107         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4108                 /* Check and wait for the disable status of the queue */
4109                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4110                 if (ret) {
4111                         dev_info(&pf->pdev->dev,
4112                                  "VSI seid %d Tx ring %d disable timeout\n",
4113                                  vsi->seid, pf_q);
4114                         return ret;
4115                 }
4116         }
4117
4118         return 0;
4119 }
4120
4121 /**
4122  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
4123  * @pf: the PF
4124  *
4125  * This function waits for the Tx queues to be in disabled state for all the
4126  * VSIs that are managed by this PF.
4127  **/
4128 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
4129 {
4130         int v, ret = 0;
4131
4132         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4133                 /* No need to wait for FCoE VSI queues */
4134                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4135                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
4136                         if (ret)
4137                                 break;
4138                 }
4139         }
4140
4141         return ret;
4142 }
4143
4144 #endif
4145
4146 /**
4147  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4148  * @q_idx: TX queue number
4149  * @vsi: Pointer to VSI struct
4150  *
4151  * This function checks specified queue for given VSI. Detects hung condition.
4152  * Sets hung bit since it is two step process. Before next run of service task
4153  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4154  * hung condition remain unchanged and during subsequent run, this function
4155  * issues SW interrupt to recover from hung condition.
4156  **/
4157 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4158 {
4159         struct i40e_ring *tx_ring = NULL;
4160         struct i40e_pf  *pf;
4161         u32 head, val, tx_pending;
4162         int i;
4163
4164         pf = vsi->back;
4165
4166         /* now that we have an index, find the tx_ring struct */
4167         for (i = 0; i < vsi->num_queue_pairs; i++) {
4168                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4169                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4170                                 tx_ring = vsi->tx_rings[i];
4171                                 break;
4172                         }
4173                 }
4174         }
4175
4176         if (!tx_ring)
4177                 return;
4178
4179         /* Read interrupt register */
4180         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4181                 val = rd32(&pf->hw,
4182                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4183                                                tx_ring->vsi->base_vector - 1));
4184         else
4185                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4186
4187         head = i40e_get_head(tx_ring);
4188
4189         tx_pending = i40e_get_tx_pending(tx_ring);
4190
4191         /* Interrupts are disabled and TX pending is non-zero,
4192          * trigger the SW interrupt (don't wait). Worst case
4193          * there will be one extra interrupt which may result
4194          * into not cleaning any queues because queues are cleaned.
4195          */
4196         if (tx_pending && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK)))
4197                 i40e_force_wb(vsi, tx_ring->q_vector);
4198 }
4199
4200 /**
4201  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4202  * @pf:  pointer to PF struct
4203  *
4204  * LAN VSI has netdev and netdev has TX queues. This function is to check
4205  * each of those TX queues if they are hung, trigger recovery by issuing
4206  * SW interrupt.
4207  **/
4208 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4209 {
4210         struct net_device *netdev;
4211         struct i40e_vsi *vsi;
4212         int i;
4213
4214         /* Only for LAN VSI */
4215         vsi = pf->vsi[pf->lan_vsi];
4216
4217         if (!vsi)
4218                 return;
4219
4220         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4221         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4222             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4223                 return;
4224
4225         /* Make sure type is MAIN VSI */
4226         if (vsi->type != I40E_VSI_MAIN)
4227                 return;
4228
4229         netdev = vsi->netdev;
4230         if (!netdev)
4231                 return;
4232
4233         /* Bail out if netif_carrier is not OK */
4234         if (!netif_carrier_ok(netdev))
4235                 return;
4236
4237         /* Go thru' TX queues for netdev */
4238         for (i = 0; i < netdev->num_tx_queues; i++) {
4239                 struct netdev_queue *q;
4240
4241                 q = netdev_get_tx_queue(netdev, i);
4242                 if (q)
4243                         i40e_detect_recover_hung_queue(i, vsi);
4244         }
4245 }
4246
4247 /**
4248  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4249  * @pf: pointer to PF
4250  *
4251  * Get TC map for ISCSI PF type that will include iSCSI TC
4252  * and LAN TC.
4253  **/
4254 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4255 {
4256         struct i40e_dcb_app_priority_table app;
4257         struct i40e_hw *hw = &pf->hw;
4258         u8 enabled_tc = 1; /* TC0 is always enabled */
4259         u8 tc, i;
4260         /* Get the iSCSI APP TLV */
4261         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4262
4263         for (i = 0; i < dcbcfg->numapps; i++) {
4264                 app = dcbcfg->app[i];
4265                 if (app.selector == I40E_APP_SEL_TCPIP &&
4266                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4267                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4268                         enabled_tc |= BIT_ULL(tc);
4269                         break;
4270                 }
4271         }
4272
4273         return enabled_tc;
4274 }
4275
4276 /**
4277  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4278  * @dcbcfg: the corresponding DCBx configuration structure
4279  *
4280  * Return the number of TCs from given DCBx configuration
4281  **/
4282 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4283 {
4284         u8 num_tc = 0;
4285         int i;
4286
4287         /* Scan the ETS Config Priority Table to find
4288          * traffic class enabled for a given priority
4289          * and use the traffic class index to get the
4290          * number of traffic classes enabled
4291          */
4292         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4293                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4294                         num_tc = dcbcfg->etscfg.prioritytable[i];
4295         }
4296
4297         /* Traffic class index starts from zero so
4298          * increment to return the actual count
4299          */
4300         return num_tc + 1;
4301 }
4302
4303 /**
4304  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4305  * @dcbcfg: the corresponding DCBx configuration structure
4306  *
4307  * Query the current DCB configuration and return the number of
4308  * traffic classes enabled from the given DCBX config
4309  **/
4310 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4311 {
4312         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4313         u8 enabled_tc = 1;
4314         u8 i;
4315
4316         for (i = 0; i < num_tc; i++)
4317                 enabled_tc |= BIT(i);
4318
4319         return enabled_tc;
4320 }
4321
4322 /**
4323  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4324  * @pf: PF being queried
4325  *
4326  * Return number of traffic classes enabled for the given PF
4327  **/
4328 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4329 {
4330         struct i40e_hw *hw = &pf->hw;
4331         u8 i, enabled_tc;
4332         u8 num_tc = 0;
4333         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4334
4335         /* If DCB is not enabled then always in single TC */
4336         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4337                 return 1;
4338
4339         /* SFP mode will be enabled for all TCs on port */
4340         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4341                 return i40e_dcb_get_num_tc(dcbcfg);
4342
4343         /* MFP mode return count of enabled TCs for this PF */
4344         if (pf->hw.func_caps.iscsi)
4345                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4346         else
4347                 return 1; /* Only TC0 */
4348
4349         /* At least have TC0 */
4350         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4351         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4352                 if (enabled_tc & BIT_ULL(i))
4353                         num_tc++;
4354         }
4355         return num_tc;
4356 }
4357
4358 /**
4359  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4360  * @pf: PF being queried
4361  *
4362  * Return a bitmap for first enabled traffic class for this PF.
4363  **/
4364 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4365 {
4366         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4367         u8 i = 0;
4368
4369         if (!enabled_tc)
4370                 return 0x1; /* TC0 */
4371
4372         /* Find the first enabled TC */
4373         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4374                 if (enabled_tc & BIT_ULL(i))
4375                         break;
4376         }
4377
4378         return BIT(i);
4379 }
4380
4381 /**
4382  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4383  * @pf: PF being queried
4384  *
4385  * Return a bitmap for enabled traffic classes for this PF.
4386  **/
4387 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4388 {
4389         /* If DCB is not enabled for this PF then just return default TC */
4390         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4391                 return i40e_pf_get_default_tc(pf);
4392
4393         /* SFP mode we want PF to be enabled for all TCs */
4394         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4395                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4396
4397         /* MFP enabled and iSCSI PF type */
4398         if (pf->hw.func_caps.iscsi)
4399                 return i40e_get_iscsi_tc_map(pf);
4400         else
4401                 return i40e_pf_get_default_tc(pf);
4402 }
4403
4404 /**
4405  * i40e_vsi_get_bw_info - Query VSI BW Information
4406  * @vsi: the VSI being queried
4407  *
4408  * Returns 0 on success, negative value on failure
4409  **/
4410 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4411 {
4412         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4413         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4414         struct i40e_pf *pf = vsi->back;
4415         struct i40e_hw *hw = &pf->hw;
4416         i40e_status ret;
4417         u32 tc_bw_max;
4418         int i;
4419
4420         /* Get the VSI level BW configuration */
4421         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4422         if (ret) {
4423                 dev_info(&pf->pdev->dev,
4424                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4425                          i40e_stat_str(&pf->hw, ret),
4426                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4427                 return -EINVAL;
4428         }
4429
4430         /* Get the VSI level BW configuration per TC */
4431         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4432                                                NULL);
4433         if (ret) {
4434                 dev_info(&pf->pdev->dev,
4435                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4436                          i40e_stat_str(&pf->hw, ret),
4437                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4438                 return -EINVAL;
4439         }
4440
4441         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4442                 dev_info(&pf->pdev->dev,
4443                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4444                          bw_config.tc_valid_bits,
4445                          bw_ets_config.tc_valid_bits);
4446                 /* Still continuing */
4447         }
4448
4449         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4450         vsi->bw_max_quanta = bw_config.max_bw;
4451         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4452                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4453         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4454                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4455                 vsi->bw_ets_limit_credits[i] =
4456                                         le16_to_cpu(bw_ets_config.credits[i]);
4457                 /* 3 bits out of 4 for each TC */
4458                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4459         }
4460
4461         return 0;
4462 }
4463
4464 /**
4465  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4466  * @vsi: the VSI being configured
4467  * @enabled_tc: TC bitmap
4468  * @bw_credits: BW shared credits per TC
4469  *
4470  * Returns 0 on success, negative value on failure
4471  **/
4472 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4473                                        u8 *bw_share)
4474 {
4475         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4476         i40e_status ret;
4477         int i;
4478
4479         bw_data.tc_valid_bits = enabled_tc;
4480         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4481                 bw_data.tc_bw_credits[i] = bw_share[i];
4482
4483         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4484                                        NULL);
4485         if (ret) {
4486                 dev_info(&vsi->back->pdev->dev,
4487                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4488                          vsi->back->hw.aq.asq_last_status);
4489                 return -EINVAL;
4490         }
4491
4492         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4493                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4494
4495         return 0;
4496 }
4497
4498 /**
4499  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4500  * @vsi: the VSI being configured
4501  * @enabled_tc: TC map to be enabled
4502  *
4503  **/
4504 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4505 {
4506         struct net_device *netdev = vsi->netdev;
4507         struct i40e_pf *pf = vsi->back;
4508         struct i40e_hw *hw = &pf->hw;
4509         u8 netdev_tc = 0;
4510         int i;
4511         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4512
4513         if (!netdev)
4514                 return;
4515
4516         if (!enabled_tc) {
4517                 netdev_reset_tc(netdev);
4518                 return;
4519         }
4520
4521         /* Set up actual enabled TCs on the VSI */
4522         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4523                 return;
4524
4525         /* set per TC queues for the VSI */
4526         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4527                 /* Only set TC queues for enabled tcs
4528                  *
4529                  * e.g. For a VSI that has TC0 and TC3 enabled the
4530                  * enabled_tc bitmap would be 0x00001001; the driver
4531                  * will set the numtc for netdev as 2 that will be
4532                  * referenced by the netdev layer as TC 0 and 1.
4533                  */
4534                 if (vsi->tc_config.enabled_tc & BIT_ULL(i))
4535                         netdev_set_tc_queue(netdev,
4536                                         vsi->tc_config.tc_info[i].netdev_tc,
4537                                         vsi->tc_config.tc_info[i].qcount,
4538                                         vsi->tc_config.tc_info[i].qoffset);
4539         }
4540
4541         /* Assign UP2TC map for the VSI */
4542         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4543                 /* Get the actual TC# for the UP */
4544                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4545                 /* Get the mapped netdev TC# for the UP */
4546                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4547                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4548         }
4549 }
4550
4551 /**
4552  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4553  * @vsi: the VSI being configured
4554  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4555  **/
4556 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4557                                       struct i40e_vsi_context *ctxt)
4558 {
4559         /* copy just the sections touched not the entire info
4560          * since not all sections are valid as returned by
4561          * update vsi params
4562          */
4563         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4564         memcpy(&vsi->info.queue_mapping,
4565                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4566         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4567                sizeof(vsi->info.tc_mapping));
4568 }
4569
4570 /**
4571  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4572  * @vsi: VSI to be configured
4573  * @enabled_tc: TC bitmap
4574  *
4575  * This configures a particular VSI for TCs that are mapped to the
4576  * given TC bitmap. It uses default bandwidth share for TCs across
4577  * VSIs to configure TC for a particular VSI.
4578  *
4579  * NOTE:
4580  * It is expected that the VSI queues have been quisced before calling
4581  * this function.
4582  **/
4583 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4584 {
4585         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4586         struct i40e_vsi_context ctxt;
4587         int ret = 0;
4588         int i;
4589
4590         /* Check if enabled_tc is same as existing or new TCs */
4591         if (vsi->tc_config.enabled_tc == enabled_tc)
4592                 return ret;
4593
4594         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4595         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4596                 if (enabled_tc & BIT_ULL(i))
4597                         bw_share[i] = 1;
4598         }
4599
4600         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4601         if (ret) {
4602                 dev_info(&vsi->back->pdev->dev,
4603                          "Failed configuring TC map %d for VSI %d\n",
4604                          enabled_tc, vsi->seid);
4605                 goto out;
4606         }
4607
4608         /* Update Queue Pairs Mapping for currently enabled UPs */
4609         ctxt.seid = vsi->seid;
4610         ctxt.pf_num = vsi->back->hw.pf_id;
4611         ctxt.vf_num = 0;
4612         ctxt.uplink_seid = vsi->uplink_seid;
4613         ctxt.info = vsi->info;
4614         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4615
4616         /* Update the VSI after updating the VSI queue-mapping information */
4617         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4618         if (ret) {
4619                 dev_info(&vsi->back->pdev->dev,
4620                          "Update vsi tc config failed, err %s aq_err %s\n",
4621                          i40e_stat_str(&vsi->back->hw, ret),
4622                          i40e_aq_str(&vsi->back->hw,
4623                                      vsi->back->hw.aq.asq_last_status));
4624                 goto out;
4625         }
4626         /* update the local VSI info with updated queue map */
4627         i40e_vsi_update_queue_map(vsi, &ctxt);
4628         vsi->info.valid_sections = 0;
4629
4630         /* Update current VSI BW information */
4631         ret = i40e_vsi_get_bw_info(vsi);
4632         if (ret) {
4633                 dev_info(&vsi->back->pdev->dev,
4634                          "Failed updating vsi bw info, err %s aq_err %s\n",
4635                          i40e_stat_str(&vsi->back->hw, ret),
4636                          i40e_aq_str(&vsi->back->hw,
4637                                      vsi->back->hw.aq.asq_last_status));
4638                 goto out;
4639         }
4640
4641         /* Update the netdev TC setup */
4642         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4643 out:
4644         return ret;
4645 }
4646
4647 /**
4648  * i40e_veb_config_tc - Configure TCs for given VEB
4649  * @veb: given VEB
4650  * @enabled_tc: TC bitmap
4651  *
4652  * Configures given TC bitmap for VEB (switching) element
4653  **/
4654 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4655 {
4656         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4657         struct i40e_pf *pf = veb->pf;
4658         int ret = 0;
4659         int i;
4660
4661         /* No TCs or already enabled TCs just return */
4662         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4663                 return ret;
4664
4665         bw_data.tc_valid_bits = enabled_tc;
4666         /* bw_data.absolute_credits is not set (relative) */
4667
4668         /* Enable ETS TCs with equal BW Share for now */
4669         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4670                 if (enabled_tc & BIT_ULL(i))
4671                         bw_data.tc_bw_share_credits[i] = 1;
4672         }
4673
4674         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4675                                                    &bw_data, NULL);
4676         if (ret) {
4677                 dev_info(&pf->pdev->dev,
4678                          "VEB bw config failed, err %s aq_err %s\n",
4679                          i40e_stat_str(&pf->hw, ret),
4680                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4681                 goto out;
4682         }
4683
4684         /* Update the BW information */
4685         ret = i40e_veb_get_bw_info(veb);
4686         if (ret) {
4687                 dev_info(&pf->pdev->dev,
4688                          "Failed getting veb bw config, err %s aq_err %s\n",
4689                          i40e_stat_str(&pf->hw, ret),
4690                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4691         }
4692
4693 out:
4694         return ret;
4695 }
4696
4697 #ifdef CONFIG_I40E_DCB
4698 /**
4699  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4700  * @pf: PF struct
4701  *
4702  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4703  * the caller would've quiesce all the VSIs before calling
4704  * this function
4705  **/
4706 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4707 {
4708         u8 tc_map = 0;
4709         int ret;
4710         u8 v;
4711
4712         /* Enable the TCs available on PF to all VEBs */
4713         tc_map = i40e_pf_get_tc_map(pf);
4714         for (v = 0; v < I40E_MAX_VEB; v++) {
4715                 if (!pf->veb[v])
4716                         continue;
4717                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4718                 if (ret) {
4719                         dev_info(&pf->pdev->dev,
4720                                  "Failed configuring TC for VEB seid=%d\n",
4721                                  pf->veb[v]->seid);
4722                         /* Will try to configure as many components */
4723                 }
4724         }
4725
4726         /* Update each VSI */
4727         for (v = 0; v < pf->num_alloc_vsi; v++) {
4728                 if (!pf->vsi[v])
4729                         continue;
4730
4731                 /* - Enable all TCs for the LAN VSI
4732 #ifdef I40E_FCOE
4733                  * - For FCoE VSI only enable the TC configured
4734                  *   as per the APP TLV
4735 #endif
4736                  * - For all others keep them at TC0 for now
4737                  */
4738                 if (v == pf->lan_vsi)
4739                         tc_map = i40e_pf_get_tc_map(pf);
4740                 else
4741                         tc_map = i40e_pf_get_default_tc(pf);
4742 #ifdef I40E_FCOE
4743                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4744                         tc_map = i40e_get_fcoe_tc_map(pf);
4745 #endif /* #ifdef I40E_FCOE */
4746
4747                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4748                 if (ret) {
4749                         dev_info(&pf->pdev->dev,
4750                                  "Failed configuring TC for VSI seid=%d\n",
4751                                  pf->vsi[v]->seid);
4752                         /* Will try to configure as many components */
4753                 } else {
4754                         /* Re-configure VSI vectors based on updated TC map */
4755                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4756                         if (pf->vsi[v]->netdev)
4757                                 i40e_dcbnl_set_all(pf->vsi[v]);
4758                 }
4759         }
4760 }
4761
4762 /**
4763  * i40e_resume_port_tx - Resume port Tx
4764  * @pf: PF struct
4765  *
4766  * Resume a port's Tx and issue a PF reset in case of failure to
4767  * resume.
4768  **/
4769 static int i40e_resume_port_tx(struct i40e_pf *pf)
4770 {
4771         struct i40e_hw *hw = &pf->hw;
4772         int ret;
4773
4774         ret = i40e_aq_resume_port_tx(hw, NULL);
4775         if (ret) {
4776                 dev_info(&pf->pdev->dev,
4777                          "Resume Port Tx failed, err %s aq_err %s\n",
4778                           i40e_stat_str(&pf->hw, ret),
4779                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4780                 /* Schedule PF reset to recover */
4781                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4782                 i40e_service_event_schedule(pf);
4783         }
4784
4785         return ret;
4786 }
4787
4788 /**
4789  * i40e_init_pf_dcb - Initialize DCB configuration
4790  * @pf: PF being configured
4791  *
4792  * Query the current DCB configuration and cache it
4793  * in the hardware structure
4794  **/
4795 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4796 {
4797         struct i40e_hw *hw = &pf->hw;
4798         int err = 0;
4799
4800         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
4801         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
4802             (pf->hw.aq.fw_maj_ver < 4))
4803                 goto out;
4804
4805         /* Get the initial DCB configuration */
4806         err = i40e_init_dcb(hw);
4807         if (!err) {
4808                 /* Device/Function is not DCBX capable */
4809                 if ((!hw->func_caps.dcb) ||
4810                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4811                         dev_info(&pf->pdev->dev,
4812                                  "DCBX offload is not supported or is disabled for this PF.\n");
4813
4814                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4815                                 goto out;
4816
4817                 } else {
4818                         /* When status is not DISABLED then DCBX in FW */
4819                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4820                                        DCB_CAP_DCBX_VER_IEEE;
4821
4822                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
4823                         /* Enable DCB tagging only when more than one TC */
4824                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
4825                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4826                         dev_dbg(&pf->pdev->dev,
4827                                 "DCBX offload is supported for this PF.\n");
4828                 }
4829         } else {
4830                 dev_info(&pf->pdev->dev,
4831                          "Query for DCB configuration failed, err %s aq_err %s\n",
4832                          i40e_stat_str(&pf->hw, err),
4833                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4834         }
4835
4836 out:
4837         return err;
4838 }
4839 #endif /* CONFIG_I40E_DCB */
4840 #define SPEED_SIZE 14
4841 #define FC_SIZE 8
4842 /**
4843  * i40e_print_link_message - print link up or down
4844  * @vsi: the VSI for which link needs a message
4845  */
4846 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
4847 {
4848         char *speed = "Unknown";
4849         char *fc = "Unknown";
4850
4851         if (vsi->current_isup == isup)
4852                 return;
4853         vsi->current_isup = isup;
4854         if (!isup) {
4855                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4856                 return;
4857         }
4858
4859         /* Warn user if link speed on NPAR enabled partition is not at
4860          * least 10GB
4861          */
4862         if (vsi->back->hw.func_caps.npar_enable &&
4863             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
4864              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
4865                 netdev_warn(vsi->netdev,
4866                             "The partition detected link speed that is less than 10Gbps\n");
4867
4868         switch (vsi->back->hw.phy.link_info.link_speed) {
4869         case I40E_LINK_SPEED_40GB:
4870                 speed = "40 G";
4871                 break;
4872         case I40E_LINK_SPEED_20GB:
4873                 speed = "20 G";
4874                 break;
4875         case I40E_LINK_SPEED_10GB:
4876                 speed = "10 G";
4877                 break;
4878         case I40E_LINK_SPEED_1GB:
4879                 speed = "1000 M";
4880                 break;
4881         case I40E_LINK_SPEED_100MB:
4882                 speed = "100 M";
4883                 break;
4884         default:
4885                 break;
4886         }
4887
4888         switch (vsi->back->hw.fc.current_mode) {
4889         case I40E_FC_FULL:
4890                 fc = "RX/TX";
4891                 break;
4892         case I40E_FC_TX_PAUSE:
4893                 fc = "TX";
4894                 break;
4895         case I40E_FC_RX_PAUSE:
4896                 fc = "RX";
4897                 break;
4898         default:
4899                 fc = "None";
4900                 break;
4901         }
4902
4903         netdev_info(vsi->netdev, "NIC Link is Up %sbps Full Duplex, Flow Control: %s\n",
4904                     speed, fc);
4905 }
4906
4907 /**
4908  * i40e_up_complete - Finish the last steps of bringing up a connection
4909  * @vsi: the VSI being configured
4910  **/
4911 static int i40e_up_complete(struct i40e_vsi *vsi)
4912 {
4913         struct i40e_pf *pf = vsi->back;
4914         int err;
4915
4916         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4917                 i40e_vsi_configure_msix(vsi);
4918         else
4919                 i40e_configure_msi_and_legacy(vsi);
4920
4921         /* start rings */
4922         err = i40e_vsi_control_rings(vsi, true);
4923         if (err)
4924                 return err;
4925
4926         clear_bit(__I40E_DOWN, &vsi->state);
4927         i40e_napi_enable_all(vsi);
4928         i40e_vsi_enable_irq(vsi);
4929
4930         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4931             (vsi->netdev)) {
4932                 i40e_print_link_message(vsi, true);
4933                 netif_tx_start_all_queues(vsi->netdev);
4934                 netif_carrier_on(vsi->netdev);
4935         } else if (vsi->netdev) {
4936                 i40e_print_link_message(vsi, false);
4937                 /* need to check for qualified module here*/
4938                 if ((pf->hw.phy.link_info.link_info &
4939                         I40E_AQ_MEDIA_AVAILABLE) &&
4940                     (!(pf->hw.phy.link_info.an_info &
4941                         I40E_AQ_QUALIFIED_MODULE)))
4942                         netdev_err(vsi->netdev,
4943                                    "the driver failed to link because an unqualified module was detected.");
4944         }
4945
4946         /* replay FDIR SB filters */
4947         if (vsi->type == I40E_VSI_FDIR) {
4948                 /* reset fd counters */
4949                 pf->fd_add_err = pf->fd_atr_cnt = 0;
4950                 if (pf->fd_tcp_rule > 0) {
4951                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4952                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
4953                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
4954                         pf->fd_tcp_rule = 0;
4955                 }
4956                 i40e_fdir_filter_restore(vsi);
4957         }
4958         i40e_service_event_schedule(pf);
4959
4960         return 0;
4961 }
4962
4963 /**
4964  * i40e_vsi_reinit_locked - Reset the VSI
4965  * @vsi: the VSI being configured
4966  *
4967  * Rebuild the ring structs after some configuration
4968  * has changed, e.g. MTU size.
4969  **/
4970 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4971 {
4972         struct i40e_pf *pf = vsi->back;
4973
4974         WARN_ON(in_interrupt());
4975         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4976                 usleep_range(1000, 2000);
4977         i40e_down(vsi);
4978
4979         /* Give a VF some time to respond to the reset.  The
4980          * two second wait is based upon the watchdog cycle in
4981          * the VF driver.
4982          */
4983         if (vsi->type == I40E_VSI_SRIOV)
4984                 msleep(2000);
4985         i40e_up(vsi);
4986         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4987 }
4988
4989 /**
4990  * i40e_up - Bring the connection back up after being down
4991  * @vsi: the VSI being configured
4992  **/
4993 int i40e_up(struct i40e_vsi *vsi)
4994 {
4995         int err;
4996
4997         err = i40e_vsi_configure(vsi);
4998         if (!err)
4999                 err = i40e_up_complete(vsi);
5000
5001         return err;
5002 }
5003
5004 /**
5005  * i40e_down - Shutdown the connection processing
5006  * @vsi: the VSI being stopped
5007  **/
5008 void i40e_down(struct i40e_vsi *vsi)
5009 {
5010         int i;
5011
5012         /* It is assumed that the caller of this function
5013          * sets the vsi->state __I40E_DOWN bit.
5014          */
5015         if (vsi->netdev) {
5016                 netif_carrier_off(vsi->netdev);
5017                 netif_tx_disable(vsi->netdev);
5018         }
5019         i40e_vsi_disable_irq(vsi);
5020         i40e_vsi_control_rings(vsi, false);
5021         i40e_napi_disable_all(vsi);
5022
5023         for (i = 0; i < vsi->num_queue_pairs; i++) {
5024                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5025                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5026         }
5027 }
5028
5029 /**
5030  * i40e_setup_tc - configure multiple traffic classes
5031  * @netdev: net device to configure
5032  * @tc: number of traffic classes to enable
5033  **/
5034 #ifdef I40E_FCOE
5035 int i40e_setup_tc(struct net_device *netdev, u8 tc)
5036 #else
5037 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5038 #endif
5039 {
5040         struct i40e_netdev_priv *np = netdev_priv(netdev);
5041         struct i40e_vsi *vsi = np->vsi;
5042         struct i40e_pf *pf = vsi->back;
5043         u8 enabled_tc = 0;
5044         int ret = -EINVAL;
5045         int i;
5046
5047         /* Check if DCB enabled to continue */
5048         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5049                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5050                 goto exit;
5051         }
5052
5053         /* Check if MFP enabled */
5054         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5055                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5056                 goto exit;
5057         }
5058
5059         /* Check whether tc count is within enabled limit */
5060         if (tc > i40e_pf_get_num_tc(pf)) {
5061                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5062                 goto exit;
5063         }
5064
5065         /* Generate TC map for number of tc requested */
5066         for (i = 0; i < tc; i++)
5067                 enabled_tc |= BIT_ULL(i);
5068
5069         /* Requesting same TC configuration as already enabled */
5070         if (enabled_tc == vsi->tc_config.enabled_tc)
5071                 return 0;
5072
5073         /* Quiesce VSI queues */
5074         i40e_quiesce_vsi(vsi);
5075
5076         /* Configure VSI for enabled TCs */
5077         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5078         if (ret) {
5079                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5080                             vsi->seid);
5081                 goto exit;
5082         }
5083
5084         /* Unquiesce VSI */
5085         i40e_unquiesce_vsi(vsi);
5086
5087 exit:
5088         return ret;
5089 }
5090
5091 /**
5092  * i40e_open - Called when a network interface is made active
5093  * @netdev: network interface device structure
5094  *
5095  * The open entry point is called when a network interface is made
5096  * active by the system (IFF_UP).  At this point all resources needed
5097  * for transmit and receive operations are allocated, the interrupt
5098  * handler is registered with the OS, the netdev watchdog subtask is
5099  * enabled, and the stack is notified that the interface is ready.
5100  *
5101  * Returns 0 on success, negative value on failure
5102  **/
5103 int i40e_open(struct net_device *netdev)
5104 {
5105         struct i40e_netdev_priv *np = netdev_priv(netdev);
5106         struct i40e_vsi *vsi = np->vsi;
5107         struct i40e_pf *pf = vsi->back;
5108         int err;
5109
5110         /* disallow open during test or if eeprom is broken */
5111         if (test_bit(__I40E_TESTING, &pf->state) ||
5112             test_bit(__I40E_BAD_EEPROM, &pf->state))
5113                 return -EBUSY;
5114
5115         netif_carrier_off(netdev);
5116
5117         err = i40e_vsi_open(vsi);
5118         if (err)
5119                 return err;
5120
5121         /* configure global TSO hardware offload settings */
5122         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5123                                                        TCP_FLAG_FIN) >> 16);
5124         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5125                                                        TCP_FLAG_FIN |
5126                                                        TCP_FLAG_CWR) >> 16);
5127         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5128
5129 #ifdef CONFIG_I40E_VXLAN
5130         vxlan_get_rx_port(netdev);
5131 #endif
5132
5133         return 0;
5134 }
5135
5136 /**
5137  * i40e_vsi_open -
5138  * @vsi: the VSI to open
5139  *
5140  * Finish initialization of the VSI.
5141  *
5142  * Returns 0 on success, negative value on failure
5143  **/
5144 int i40e_vsi_open(struct i40e_vsi *vsi)
5145 {
5146         struct i40e_pf *pf = vsi->back;
5147         char int_name[I40E_INT_NAME_STR_LEN];
5148         int err;
5149
5150         /* allocate descriptors */
5151         err = i40e_vsi_setup_tx_resources(vsi);
5152         if (err)
5153                 goto err_setup_tx;
5154         err = i40e_vsi_setup_rx_resources(vsi);
5155         if (err)
5156                 goto err_setup_rx;
5157
5158         err = i40e_vsi_configure(vsi);
5159         if (err)
5160                 goto err_setup_rx;
5161
5162         if (vsi->netdev) {
5163                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5164                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5165                 err = i40e_vsi_request_irq(vsi, int_name);
5166                 if (err)
5167                         goto err_setup_rx;
5168
5169                 /* Notify the stack of the actual queue counts. */
5170                 err = netif_set_real_num_tx_queues(vsi->netdev,
5171                                                    vsi->num_queue_pairs);
5172                 if (err)
5173                         goto err_set_queues;
5174
5175                 err = netif_set_real_num_rx_queues(vsi->netdev,
5176                                                    vsi->num_queue_pairs);
5177                 if (err)
5178                         goto err_set_queues;
5179
5180         } else if (vsi->type == I40E_VSI_FDIR) {
5181                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5182                          dev_driver_string(&pf->pdev->dev),
5183                          dev_name(&pf->pdev->dev));
5184                 err = i40e_vsi_request_irq(vsi, int_name);
5185
5186         } else {
5187                 err = -EINVAL;
5188                 goto err_setup_rx;
5189         }
5190
5191         err = i40e_up_complete(vsi);
5192         if (err)
5193                 goto err_up_complete;
5194
5195         return 0;
5196
5197 err_up_complete:
5198         i40e_down(vsi);
5199 err_set_queues:
5200         i40e_vsi_free_irq(vsi);
5201 err_setup_rx:
5202         i40e_vsi_free_rx_resources(vsi);
5203 err_setup_tx:
5204         i40e_vsi_free_tx_resources(vsi);
5205         if (vsi == pf->vsi[pf->lan_vsi])
5206                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5207
5208         return err;
5209 }
5210
5211 /**
5212  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5213  * @pf: Pointer to PF
5214  *
5215  * This function destroys the hlist where all the Flow Director
5216  * filters were saved.
5217  **/
5218 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5219 {
5220         struct i40e_fdir_filter *filter;
5221         struct hlist_node *node2;
5222
5223         hlist_for_each_entry_safe(filter, node2,
5224                                   &pf->fdir_filter_list, fdir_node) {
5225                 hlist_del(&filter->fdir_node);
5226                 kfree(filter);
5227         }
5228         pf->fdir_pf_active_filters = 0;
5229 }
5230
5231 /**
5232  * i40e_close - Disables a network interface
5233  * @netdev: network interface device structure
5234  *
5235  * The close entry point is called when an interface is de-activated
5236  * by the OS.  The hardware is still under the driver's control, but
5237  * this netdev interface is disabled.
5238  *
5239  * Returns 0, this is not allowed to fail
5240  **/
5241 #ifdef I40E_FCOE
5242 int i40e_close(struct net_device *netdev)
5243 #else
5244 static int i40e_close(struct net_device *netdev)
5245 #endif
5246 {
5247         struct i40e_netdev_priv *np = netdev_priv(netdev);
5248         struct i40e_vsi *vsi = np->vsi;
5249
5250         i40e_vsi_close(vsi);
5251
5252         return 0;
5253 }
5254
5255 /**
5256  * i40e_do_reset - Start a PF or Core Reset sequence
5257  * @pf: board private structure
5258  * @reset_flags: which reset is requested
5259  *
5260  * The essential difference in resets is that the PF Reset
5261  * doesn't clear the packet buffers, doesn't reset the PE
5262  * firmware, and doesn't bother the other PFs on the chip.
5263  **/
5264 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5265 {
5266         u32 val;
5267
5268         WARN_ON(in_interrupt());
5269
5270         if (i40e_check_asq_alive(&pf->hw))
5271                 i40e_vc_notify_reset(pf);
5272
5273         /* do the biggest reset indicated */
5274         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5275
5276                 /* Request a Global Reset
5277                  *
5278                  * This will start the chip's countdown to the actual full
5279                  * chip reset event, and a warning interrupt to be sent
5280                  * to all PFs, including the requestor.  Our handler
5281                  * for the warning interrupt will deal with the shutdown
5282                  * and recovery of the switch setup.
5283                  */
5284                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5285                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5286                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5287                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5288
5289         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5290
5291                 /* Request a Core Reset
5292                  *
5293                  * Same as Global Reset, except does *not* include the MAC/PHY
5294                  */
5295                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5296                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5297                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5298                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5299                 i40e_flush(&pf->hw);
5300
5301         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5302
5303                 /* Request a PF Reset
5304                  *
5305                  * Resets only the PF-specific registers
5306                  *
5307                  * This goes directly to the tear-down and rebuild of
5308                  * the switch, since we need to do all the recovery as
5309                  * for the Core Reset.
5310                  */
5311                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5312                 i40e_handle_reset_warning(pf);
5313
5314         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5315                 int v;
5316
5317                 /* Find the VSI(s) that requested a re-init */
5318                 dev_info(&pf->pdev->dev,
5319                          "VSI reinit requested\n");
5320                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5321                         struct i40e_vsi *vsi = pf->vsi[v];
5322
5323                         if (vsi != NULL &&
5324                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5325                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5326                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5327                         }
5328                 }
5329         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5330                 int v;
5331
5332                 /* Find the VSI(s) that needs to be brought down */
5333                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5334                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5335                         struct i40e_vsi *vsi = pf->vsi[v];
5336
5337                         if (vsi != NULL &&
5338                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5339                                 set_bit(__I40E_DOWN, &vsi->state);
5340                                 i40e_down(vsi);
5341                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5342                         }
5343                 }
5344         } else {
5345                 dev_info(&pf->pdev->dev,
5346                          "bad reset request 0x%08x\n", reset_flags);
5347         }
5348 }
5349
5350 #ifdef CONFIG_I40E_DCB
5351 /**
5352  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5353  * @pf: board private structure
5354  * @old_cfg: current DCB config
5355  * @new_cfg: new DCB config
5356  **/
5357 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5358                             struct i40e_dcbx_config *old_cfg,
5359                             struct i40e_dcbx_config *new_cfg)
5360 {
5361         bool need_reconfig = false;
5362
5363         /* Check if ETS configuration has changed */
5364         if (memcmp(&new_cfg->etscfg,
5365                    &old_cfg->etscfg,
5366                    sizeof(new_cfg->etscfg))) {
5367                 /* If Priority Table has changed reconfig is needed */
5368                 if (memcmp(&new_cfg->etscfg.prioritytable,
5369                            &old_cfg->etscfg.prioritytable,
5370                            sizeof(new_cfg->etscfg.prioritytable))) {
5371                         need_reconfig = true;
5372                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5373                 }
5374
5375                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5376                            &old_cfg->etscfg.tcbwtable,
5377                            sizeof(new_cfg->etscfg.tcbwtable)))
5378                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5379
5380                 if (memcmp(&new_cfg->etscfg.tsatable,
5381                            &old_cfg->etscfg.tsatable,
5382                            sizeof(new_cfg->etscfg.tsatable)))
5383                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5384         }
5385
5386         /* Check if PFC configuration has changed */
5387         if (memcmp(&new_cfg->pfc,
5388                    &old_cfg->pfc,
5389                    sizeof(new_cfg->pfc))) {
5390                 need_reconfig = true;
5391                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5392         }
5393
5394         /* Check if APP Table has changed */
5395         if (memcmp(&new_cfg->app,
5396                    &old_cfg->app,
5397                    sizeof(new_cfg->app))) {
5398                 need_reconfig = true;
5399                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5400         }
5401
5402         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5403         return need_reconfig;
5404 }
5405
5406 /**
5407  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5408  * @pf: board private structure
5409  * @e: event info posted on ARQ
5410  **/
5411 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5412                                   struct i40e_arq_event_info *e)
5413 {
5414         struct i40e_aqc_lldp_get_mib *mib =
5415                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5416         struct i40e_hw *hw = &pf->hw;
5417         struct i40e_dcbx_config tmp_dcbx_cfg;
5418         bool need_reconfig = false;
5419         int ret = 0;
5420         u8 type;
5421
5422         /* Not DCB capable or capability disabled */
5423         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5424                 return ret;
5425
5426         /* Ignore if event is not for Nearest Bridge */
5427         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5428                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5429         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5430         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5431                 return ret;
5432
5433         /* Check MIB Type and return if event for Remote MIB update */
5434         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5435         dev_dbg(&pf->pdev->dev,
5436                 "LLDP event mib type %s\n", type ? "remote" : "local");
5437         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5438                 /* Update the remote cached instance and return */
5439                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5440                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5441                                 &hw->remote_dcbx_config);
5442                 goto exit;
5443         }
5444
5445         /* Store the old configuration */
5446         tmp_dcbx_cfg = hw->local_dcbx_config;
5447
5448         /* Reset the old DCBx configuration data */
5449         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5450         /* Get updated DCBX data from firmware */
5451         ret = i40e_get_dcb_config(&pf->hw);
5452         if (ret) {
5453                 dev_info(&pf->pdev->dev,
5454                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5455                          i40e_stat_str(&pf->hw, ret),
5456                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5457                 goto exit;
5458         }
5459
5460         /* No change detected in DCBX configs */
5461         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5462                     sizeof(tmp_dcbx_cfg))) {
5463                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5464                 goto exit;
5465         }
5466
5467         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5468                                                &hw->local_dcbx_config);
5469
5470         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5471
5472         if (!need_reconfig)
5473                 goto exit;
5474
5475         /* Enable DCB tagging only when more than one TC */
5476         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5477                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5478         else
5479                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5480
5481         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5482         /* Reconfiguration needed quiesce all VSIs */
5483         i40e_pf_quiesce_all_vsi(pf);
5484
5485         /* Changes in configuration update VEB/VSI */
5486         i40e_dcb_reconfigure(pf);
5487
5488         ret = i40e_resume_port_tx(pf);
5489
5490         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5491         /* In case of error no point in resuming VSIs */
5492         if (ret)
5493                 goto exit;
5494
5495         /* Wait for the PF's Tx queues to be disabled */
5496         ret = i40e_pf_wait_txq_disabled(pf);
5497         if (ret) {
5498                 /* Schedule PF reset to recover */
5499                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5500                 i40e_service_event_schedule(pf);
5501         } else {
5502                 i40e_pf_unquiesce_all_vsi(pf);
5503         }
5504
5505 exit:
5506         return ret;
5507 }
5508 #endif /* CONFIG_I40E_DCB */
5509
5510 /**
5511  * i40e_do_reset_safe - Protected reset path for userland calls.
5512  * @pf: board private structure
5513  * @reset_flags: which reset is requested
5514  *
5515  **/
5516 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5517 {
5518         rtnl_lock();
5519         i40e_do_reset(pf, reset_flags);
5520         rtnl_unlock();
5521 }
5522
5523 /**
5524  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5525  * @pf: board private structure
5526  * @e: event info posted on ARQ
5527  *
5528  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5529  * and VF queues
5530  **/
5531 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5532                                            struct i40e_arq_event_info *e)
5533 {
5534         struct i40e_aqc_lan_overflow *data =
5535                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5536         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5537         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5538         struct i40e_hw *hw = &pf->hw;
5539         struct i40e_vf *vf;
5540         u16 vf_id;
5541
5542         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5543                 queue, qtx_ctl);
5544
5545         /* Queue belongs to VF, find the VF and issue VF reset */
5546         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5547             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5548                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5549                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5550                 vf_id -= hw->func_caps.vf_base_id;
5551                 vf = &pf->vf[vf_id];
5552                 i40e_vc_notify_vf_reset(vf);
5553                 /* Allow VF to process pending reset notification */
5554                 msleep(20);
5555                 i40e_reset_vf(vf, false);
5556         }
5557 }
5558
5559 /**
5560  * i40e_service_event_complete - Finish up the service event
5561  * @pf: board private structure
5562  **/
5563 static void i40e_service_event_complete(struct i40e_pf *pf)
5564 {
5565         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5566
5567         /* flush memory to make sure state is correct before next watchog */
5568         smp_mb__before_atomic();
5569         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5570 }
5571
5572 /**
5573  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5574  * @pf: board private structure
5575  **/
5576 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5577 {
5578         u32 val, fcnt_prog;
5579
5580         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5581         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5582         return fcnt_prog;
5583 }
5584
5585 /**
5586  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5587  * @pf: board private structure
5588  **/
5589 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5590 {
5591         u32 val, fcnt_prog;
5592
5593         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5594         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5595                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5596                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5597         return fcnt_prog;
5598 }
5599
5600 /**
5601  * i40e_get_global_fd_count - Get total FD filters programmed on device
5602  * @pf: board private structure
5603  **/
5604 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5605 {
5606         u32 val, fcnt_prog;
5607
5608         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5609         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5610                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5611                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5612         return fcnt_prog;
5613 }
5614
5615 /**
5616  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5617  * @pf: board private structure
5618  **/
5619 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5620 {
5621         struct i40e_fdir_filter *filter;
5622         u32 fcnt_prog, fcnt_avail;
5623         struct hlist_node *node;
5624
5625         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5626                 return;
5627
5628         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5629          * to re-enable
5630          */
5631         fcnt_prog = i40e_get_global_fd_count(pf);
5632         fcnt_avail = pf->fdir_pf_filter_count;
5633         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5634             (pf->fd_add_err == 0) ||
5635             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5636                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5637                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5638                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5639                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5640                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5641                 }
5642         }
5643         /* Wait for some more space to be available to turn on ATR */
5644         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5645                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5646                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5647                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5648                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5649                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5650                 }
5651         }
5652
5653         /* if hw had a problem adding a filter, delete it */
5654         if (pf->fd_inv > 0) {
5655                 hlist_for_each_entry_safe(filter, node,
5656                                           &pf->fdir_filter_list, fdir_node) {
5657                         if (filter->fd_id == pf->fd_inv) {
5658                                 hlist_del(&filter->fdir_node);
5659                                 kfree(filter);
5660                                 pf->fdir_pf_active_filters--;
5661                         }
5662                 }
5663         }
5664 }
5665
5666 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5667 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5668 /**
5669  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5670  * @pf: board private structure
5671  **/
5672 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5673 {
5674         unsigned long min_flush_time;
5675         int flush_wait_retry = 50;
5676         bool disable_atr = false;
5677         int fd_room;
5678         int reg;
5679
5680         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5681                 return;
5682
5683         if (!time_after(jiffies, pf->fd_flush_timestamp +
5684                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
5685                 return;
5686
5687         /* If the flush is happening too quick and we have mostly SB rules we
5688          * should not re-enable ATR for some time.
5689          */
5690         min_flush_time = pf->fd_flush_timestamp +
5691                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5692         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5693
5694         if (!(time_after(jiffies, min_flush_time)) &&
5695             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5696                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5697                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5698                 disable_atr = true;
5699         }
5700
5701         pf->fd_flush_timestamp = jiffies;
5702         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5703         /* flush all filters */
5704         wr32(&pf->hw, I40E_PFQF_CTL_1,
5705              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5706         i40e_flush(&pf->hw);
5707         pf->fd_flush_cnt++;
5708         pf->fd_add_err = 0;
5709         do {
5710                 /* Check FD flush status every 5-6msec */
5711                 usleep_range(5000, 6000);
5712                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5713                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5714                         break;
5715         } while (flush_wait_retry--);
5716         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5717                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5718         } else {
5719                 /* replay sideband filters */
5720                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5721                 if (!disable_atr)
5722                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5723                 clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5724                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5725                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5726         }
5727
5728 }
5729
5730 /**
5731  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5732  * @pf: board private structure
5733  **/
5734 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5735 {
5736         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5737 }
5738
5739 /* We can see up to 256 filter programming desc in transit if the filters are
5740  * being applied really fast; before we see the first
5741  * filter miss error on Rx queue 0. Accumulating enough error messages before
5742  * reacting will make sure we don't cause flush too often.
5743  */
5744 #define I40E_MAX_FD_PROGRAM_ERROR 256
5745
5746 /**
5747  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5748  * @pf: board private structure
5749  **/
5750 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5751 {
5752
5753         /* if interface is down do nothing */
5754         if (test_bit(__I40E_DOWN, &pf->state))
5755                 return;
5756
5757         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5758                 return;
5759
5760         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5761                 i40e_fdir_flush_and_replay(pf);
5762
5763         i40e_fdir_check_and_reenable(pf);
5764
5765 }
5766
5767 /**
5768  * i40e_vsi_link_event - notify VSI of a link event
5769  * @vsi: vsi to be notified
5770  * @link_up: link up or down
5771  **/
5772 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5773 {
5774         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5775                 return;
5776
5777         switch (vsi->type) {
5778         case I40E_VSI_MAIN:
5779 #ifdef I40E_FCOE
5780         case I40E_VSI_FCOE:
5781 #endif
5782                 if (!vsi->netdev || !vsi->netdev_registered)
5783                         break;
5784
5785                 if (link_up) {
5786                         netif_carrier_on(vsi->netdev);
5787                         netif_tx_wake_all_queues(vsi->netdev);
5788                 } else {
5789                         netif_carrier_off(vsi->netdev);
5790                         netif_tx_stop_all_queues(vsi->netdev);
5791                 }
5792                 break;
5793
5794         case I40E_VSI_SRIOV:
5795         case I40E_VSI_VMDQ2:
5796         case I40E_VSI_CTRL:
5797         case I40E_VSI_MIRROR:
5798         default:
5799                 /* there is no notification for other VSIs */
5800                 break;
5801         }
5802 }
5803
5804 /**
5805  * i40e_veb_link_event - notify elements on the veb of a link event
5806  * @veb: veb to be notified
5807  * @link_up: link up or down
5808  **/
5809 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5810 {
5811         struct i40e_pf *pf;
5812         int i;
5813
5814         if (!veb || !veb->pf)
5815                 return;
5816         pf = veb->pf;
5817
5818         /* depth first... */
5819         for (i = 0; i < I40E_MAX_VEB; i++)
5820                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5821                         i40e_veb_link_event(pf->veb[i], link_up);
5822
5823         /* ... now the local VSIs */
5824         for (i = 0; i < pf->num_alloc_vsi; i++)
5825                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5826                         i40e_vsi_link_event(pf->vsi[i], link_up);
5827 }
5828
5829 /**
5830  * i40e_link_event - Update netif_carrier status
5831  * @pf: board private structure
5832  **/
5833 static void i40e_link_event(struct i40e_pf *pf)
5834 {
5835         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5836         u8 new_link_speed, old_link_speed;
5837         i40e_status status;
5838         bool new_link, old_link;
5839
5840         /* set this to force the get_link_status call to refresh state */
5841         pf->hw.phy.get_link_info = true;
5842
5843         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5844
5845         status = i40e_get_link_status(&pf->hw, &new_link);
5846         if (status) {
5847                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
5848                         status);
5849                 return;
5850         }
5851
5852         old_link_speed = pf->hw.phy.link_info_old.link_speed;
5853         new_link_speed = pf->hw.phy.link_info.link_speed;
5854
5855         if (new_link == old_link &&
5856             new_link_speed == old_link_speed &&
5857             (test_bit(__I40E_DOWN, &vsi->state) ||
5858              new_link == netif_carrier_ok(vsi->netdev)))
5859                 return;
5860
5861         if (!test_bit(__I40E_DOWN, &vsi->state))
5862                 i40e_print_link_message(vsi, new_link);
5863
5864         /* Notify the base of the switch tree connected to
5865          * the link.  Floating VEBs are not notified.
5866          */
5867         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5868                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5869         else
5870                 i40e_vsi_link_event(vsi, new_link);
5871
5872         if (pf->vf)
5873                 i40e_vc_notify_link_state(pf);
5874
5875         if (pf->flags & I40E_FLAG_PTP)
5876                 i40e_ptp_set_increment(pf);
5877 }
5878
5879 /**
5880  * i40e_watchdog_subtask - periodic checks not using event driven response
5881  * @pf: board private structure
5882  **/
5883 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5884 {
5885         int i;
5886
5887         /* if interface is down do nothing */
5888         if (test_bit(__I40E_DOWN, &pf->state) ||
5889             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5890                 return;
5891
5892         /* make sure we don't do these things too often */
5893         if (time_before(jiffies, (pf->service_timer_previous +
5894                                   pf->service_timer_period)))
5895                 return;
5896         pf->service_timer_previous = jiffies;
5897
5898         if (pf->flags & I40E_FLAG_LINK_POLLING_ENABLED)
5899                 i40e_link_event(pf);
5900
5901         /* Update the stats for active netdevs so the network stack
5902          * can look at updated numbers whenever it cares to
5903          */
5904         for (i = 0; i < pf->num_alloc_vsi; i++)
5905                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5906                         i40e_update_stats(pf->vsi[i]);
5907
5908         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
5909                 /* Update the stats for the active switching components */
5910                 for (i = 0; i < I40E_MAX_VEB; i++)
5911                         if (pf->veb[i])
5912                                 i40e_update_veb_stats(pf->veb[i]);
5913         }
5914
5915         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5916 }
5917
5918 /**
5919  * i40e_reset_subtask - Set up for resetting the device and driver
5920  * @pf: board private structure
5921  **/
5922 static void i40e_reset_subtask(struct i40e_pf *pf)
5923 {
5924         u32 reset_flags = 0;
5925
5926         rtnl_lock();
5927         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5928                 reset_flags |= BIT_ULL(__I40E_REINIT_REQUESTED);
5929                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5930         }
5931         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5932                 reset_flags |= BIT_ULL(__I40E_PF_RESET_REQUESTED);
5933                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5934         }
5935         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5936                 reset_flags |= BIT_ULL(__I40E_CORE_RESET_REQUESTED);
5937                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5938         }
5939         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5940                 reset_flags |= BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED);
5941                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5942         }
5943         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5944                 reset_flags |= BIT_ULL(__I40E_DOWN_REQUESTED);
5945                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5946         }
5947
5948         /* If there's a recovery already waiting, it takes
5949          * precedence before starting a new reset sequence.
5950          */
5951         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5952                 i40e_handle_reset_warning(pf);
5953                 goto unlock;
5954         }
5955
5956         /* If we're already down or resetting, just bail */
5957         if (reset_flags &&
5958             !test_bit(__I40E_DOWN, &pf->state) &&
5959             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5960                 i40e_do_reset(pf, reset_flags);
5961
5962 unlock:
5963         rtnl_unlock();
5964 }
5965
5966 /**
5967  * i40e_handle_link_event - Handle link event
5968  * @pf: board private structure
5969  * @e: event info posted on ARQ
5970  **/
5971 static void i40e_handle_link_event(struct i40e_pf *pf,
5972                                    struct i40e_arq_event_info *e)
5973 {
5974         struct i40e_hw *hw = &pf->hw;
5975         struct i40e_aqc_get_link_status *status =
5976                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5977
5978         /* save off old link status information */
5979         hw->phy.link_info_old = hw->phy.link_info;
5980
5981         /* Do a new status request to re-enable LSE reporting
5982          * and load new status information into the hw struct
5983          * This completely ignores any state information
5984          * in the ARQ event info, instead choosing to always
5985          * issue the AQ update link status command.
5986          */
5987         i40e_link_event(pf);
5988
5989         /* check for unqualified module, if link is down */
5990         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
5991             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
5992             (!(status->link_info & I40E_AQ_LINK_UP)))
5993                 dev_err(&pf->pdev->dev,
5994                         "The driver failed to link because an unqualified module was detected.\n");
5995 }
5996
5997 /**
5998  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5999  * @pf: board private structure
6000  **/
6001 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6002 {
6003         struct i40e_arq_event_info event;
6004         struct i40e_hw *hw = &pf->hw;
6005         u16 pending, i = 0;
6006         i40e_status ret;
6007         u16 opcode;
6008         u32 oldval;
6009         u32 val;
6010
6011         /* Do not run clean AQ when PF reset fails */
6012         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6013                 return;
6014
6015         /* check for error indications */
6016         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6017         oldval = val;
6018         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6019                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6020                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6021         }
6022         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6023                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6024                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6025         }
6026         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6027                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6028                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6029         }
6030         if (oldval != val)
6031                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6032
6033         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6034         oldval = val;
6035         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6036                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6037                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6038         }
6039         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6040                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6041                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6042         }
6043         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6044                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6045                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6046         }
6047         if (oldval != val)
6048                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6049
6050         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6051         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6052         if (!event.msg_buf)
6053                 return;
6054
6055         do {
6056                 ret = i40e_clean_arq_element(hw, &event, &pending);
6057                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6058                         break;
6059                 else if (ret) {
6060                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6061                         break;
6062                 }
6063
6064                 opcode = le16_to_cpu(event.desc.opcode);
6065                 switch (opcode) {
6066
6067                 case i40e_aqc_opc_get_link_status:
6068                         i40e_handle_link_event(pf, &event);
6069                         break;
6070                 case i40e_aqc_opc_send_msg_to_pf:
6071                         ret = i40e_vc_process_vf_msg(pf,
6072                                         le16_to_cpu(event.desc.retval),
6073                                         le32_to_cpu(event.desc.cookie_high),
6074                                         le32_to_cpu(event.desc.cookie_low),
6075                                         event.msg_buf,
6076                                         event.msg_len);
6077                         break;
6078                 case i40e_aqc_opc_lldp_update_mib:
6079                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6080 #ifdef CONFIG_I40E_DCB
6081                         rtnl_lock();
6082                         ret = i40e_handle_lldp_event(pf, &event);
6083                         rtnl_unlock();
6084 #endif /* CONFIG_I40E_DCB */
6085                         break;
6086                 case i40e_aqc_opc_event_lan_overflow:
6087                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6088                         i40e_handle_lan_overflow_event(pf, &event);
6089                         break;
6090                 case i40e_aqc_opc_send_msg_to_peer:
6091                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6092                         break;
6093                 case i40e_aqc_opc_nvm_erase:
6094                 case i40e_aqc_opc_nvm_update:
6095                         i40e_debug(&pf->hw, I40E_DEBUG_NVM, "ARQ NVM operation completed\n");
6096                         break;
6097                 default:
6098                         dev_info(&pf->pdev->dev,
6099                                  "ARQ Error: Unknown event 0x%04x received\n",
6100                                  opcode);
6101                         break;
6102                 }
6103         } while (pending && (i++ < pf->adminq_work_limit));
6104
6105         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6106         /* re-enable Admin queue interrupt cause */
6107         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6108         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6109         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6110         i40e_flush(hw);
6111
6112         kfree(event.msg_buf);
6113 }
6114
6115 /**
6116  * i40e_verify_eeprom - make sure eeprom is good to use
6117  * @pf: board private structure
6118  **/
6119 static void i40e_verify_eeprom(struct i40e_pf *pf)
6120 {
6121         int err;
6122
6123         err = i40e_diag_eeprom_test(&pf->hw);
6124         if (err) {
6125                 /* retry in case of garbage read */
6126                 err = i40e_diag_eeprom_test(&pf->hw);
6127                 if (err) {
6128                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6129                                  err);
6130                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6131                 }
6132         }
6133
6134         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6135                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6136                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6137         }
6138 }
6139
6140 /**
6141  * i40e_enable_pf_switch_lb
6142  * @pf: pointer to the PF structure
6143  *
6144  * enable switch loop back or die - no point in a return value
6145  **/
6146 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6147 {
6148         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6149         struct i40e_vsi_context ctxt;
6150         int ret;
6151
6152         ctxt.seid = pf->main_vsi_seid;
6153         ctxt.pf_num = pf->hw.pf_id;
6154         ctxt.vf_num = 0;
6155         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6156         if (ret) {
6157                 dev_info(&pf->pdev->dev,
6158                          "couldn't get PF vsi config, err %s aq_err %s\n",
6159                          i40e_stat_str(&pf->hw, ret),
6160                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6161                 return;
6162         }
6163         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6164         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6165         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6166
6167         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6168         if (ret) {
6169                 dev_info(&pf->pdev->dev,
6170                          "update vsi switch failed, err %s aq_err %s\n",
6171                          i40e_stat_str(&pf->hw, ret),
6172                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6173         }
6174 }
6175
6176 /**
6177  * i40e_disable_pf_switch_lb
6178  * @pf: pointer to the PF structure
6179  *
6180  * disable switch loop back or die - no point in a return value
6181  **/
6182 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6183 {
6184         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6185         struct i40e_vsi_context ctxt;
6186         int ret;
6187
6188         ctxt.seid = pf->main_vsi_seid;
6189         ctxt.pf_num = pf->hw.pf_id;
6190         ctxt.vf_num = 0;
6191         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6192         if (ret) {
6193                 dev_info(&pf->pdev->dev,
6194                          "couldn't get PF vsi config, err %s aq_err %s\n",
6195                          i40e_stat_str(&pf->hw, ret),
6196                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6197                 return;
6198         }
6199         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6200         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6201         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6202
6203         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6204         if (ret) {
6205                 dev_info(&pf->pdev->dev,
6206                          "update vsi switch failed, err %s aq_err %s\n",
6207                          i40e_stat_str(&pf->hw, ret),
6208                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6209         }
6210 }
6211
6212 /**
6213  * i40e_config_bridge_mode - Configure the HW bridge mode
6214  * @veb: pointer to the bridge instance
6215  *
6216  * Configure the loop back mode for the LAN VSI that is downlink to the
6217  * specified HW bridge instance. It is expected this function is called
6218  * when a new HW bridge is instantiated.
6219  **/
6220 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6221 {
6222         struct i40e_pf *pf = veb->pf;
6223
6224         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
6225                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6226                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6227         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6228                 i40e_disable_pf_switch_lb(pf);
6229         else
6230                 i40e_enable_pf_switch_lb(pf);
6231 }
6232
6233 /**
6234  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6235  * @veb: pointer to the VEB instance
6236  *
6237  * This is a recursive function that first builds the attached VSIs then
6238  * recurses in to build the next layer of VEB.  We track the connections
6239  * through our own index numbers because the seid's from the HW could
6240  * change across the reset.
6241  **/
6242 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6243 {
6244         struct i40e_vsi *ctl_vsi = NULL;
6245         struct i40e_pf *pf = veb->pf;
6246         int v, veb_idx;
6247         int ret;
6248
6249         /* build VSI that owns this VEB, temporarily attached to base VEB */
6250         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6251                 if (pf->vsi[v] &&
6252                     pf->vsi[v]->veb_idx == veb->idx &&
6253                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6254                         ctl_vsi = pf->vsi[v];
6255                         break;
6256                 }
6257         }
6258         if (!ctl_vsi) {
6259                 dev_info(&pf->pdev->dev,
6260                          "missing owner VSI for veb_idx %d\n", veb->idx);
6261                 ret = -ENOENT;
6262                 goto end_reconstitute;
6263         }
6264         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6265                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6266         ret = i40e_add_vsi(ctl_vsi);
6267         if (ret) {
6268                 dev_info(&pf->pdev->dev,
6269                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6270                          veb->idx, ret);
6271                 goto end_reconstitute;
6272         }
6273         i40e_vsi_reset_stats(ctl_vsi);
6274
6275         /* create the VEB in the switch and move the VSI onto the VEB */
6276         ret = i40e_add_veb(veb, ctl_vsi);
6277         if (ret)
6278                 goto end_reconstitute;
6279
6280         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6281                 veb->bridge_mode = BRIDGE_MODE_VEB;
6282         else
6283                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6284         i40e_config_bridge_mode(veb);
6285
6286         /* create the remaining VSIs attached to this VEB */
6287         for (v = 0; v < pf->num_alloc_vsi; v++) {
6288                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6289                         continue;
6290
6291                 if (pf->vsi[v]->veb_idx == veb->idx) {
6292                         struct i40e_vsi *vsi = pf->vsi[v];
6293
6294                         vsi->uplink_seid = veb->seid;
6295                         ret = i40e_add_vsi(vsi);
6296                         if (ret) {
6297                                 dev_info(&pf->pdev->dev,
6298                                          "rebuild of vsi_idx %d failed: %d\n",
6299                                          v, ret);
6300                                 goto end_reconstitute;
6301                         }
6302                         i40e_vsi_reset_stats(vsi);
6303                 }
6304         }
6305
6306         /* create any VEBs attached to this VEB - RECURSION */
6307         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6308                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6309                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6310                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6311                         if (ret)
6312                                 break;
6313                 }
6314         }
6315
6316 end_reconstitute:
6317         return ret;
6318 }
6319
6320 /**
6321  * i40e_get_capabilities - get info about the HW
6322  * @pf: the PF struct
6323  **/
6324 static int i40e_get_capabilities(struct i40e_pf *pf)
6325 {
6326         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6327         u16 data_size;
6328         int buf_len;
6329         int err;
6330
6331         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6332         do {
6333                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6334                 if (!cap_buf)
6335                         return -ENOMEM;
6336
6337                 /* this loads the data into the hw struct for us */
6338                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6339                                             &data_size,
6340                                             i40e_aqc_opc_list_func_capabilities,
6341                                             NULL);
6342                 /* data loaded, buffer no longer needed */
6343                 kfree(cap_buf);
6344
6345                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6346                         /* retry with a larger buffer */
6347                         buf_len = data_size;
6348                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6349                         dev_info(&pf->pdev->dev,
6350                                  "capability discovery failed, err %s aq_err %s\n",
6351                                  i40e_stat_str(&pf->hw, err),
6352                                  i40e_aq_str(&pf->hw,
6353                                              pf->hw.aq.asq_last_status));
6354                         return -ENODEV;
6355                 }
6356         } while (err);
6357
6358         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6359                 dev_info(&pf->pdev->dev,
6360                          "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",
6361                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6362                          pf->hw.func_caps.num_msix_vectors,
6363                          pf->hw.func_caps.num_msix_vectors_vf,
6364                          pf->hw.func_caps.fd_filters_guaranteed,
6365                          pf->hw.func_caps.fd_filters_best_effort,
6366                          pf->hw.func_caps.num_tx_qp,
6367                          pf->hw.func_caps.num_vsis);
6368
6369 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6370                        + pf->hw.func_caps.num_vfs)
6371         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6372                 dev_info(&pf->pdev->dev,
6373                          "got num_vsis %d, setting num_vsis to %d\n",
6374                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6375                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6376         }
6377
6378         return 0;
6379 }
6380
6381 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6382
6383 /**
6384  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6385  * @pf: board private structure
6386  **/
6387 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6388 {
6389         struct i40e_vsi *vsi;
6390         int i;
6391
6392         /* quick workaround for an NVM issue that leaves a critical register
6393          * uninitialized
6394          */
6395         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6396                 static const u32 hkey[] = {
6397                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6398                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6399                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6400                         0x95b3a76d};
6401
6402                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6403                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6404         }
6405
6406         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6407                 return;
6408
6409         /* find existing VSI and see if it needs configuring */
6410         vsi = NULL;
6411         for (i = 0; i < pf->num_alloc_vsi; i++) {
6412                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6413                         vsi = pf->vsi[i];
6414                         break;
6415                 }
6416         }
6417
6418         /* create a new VSI if none exists */
6419         if (!vsi) {
6420                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6421                                      pf->vsi[pf->lan_vsi]->seid, 0);
6422                 if (!vsi) {
6423                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6424                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6425                         return;
6426                 }
6427         }
6428
6429         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6430 }
6431
6432 /**
6433  * i40e_fdir_teardown - release the Flow Director resources
6434  * @pf: board private structure
6435  **/
6436 static void i40e_fdir_teardown(struct i40e_pf *pf)
6437 {
6438         int i;
6439
6440         i40e_fdir_filter_exit(pf);
6441         for (i = 0; i < pf->num_alloc_vsi; i++) {
6442                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6443                         i40e_vsi_release(pf->vsi[i]);
6444                         break;
6445                 }
6446         }
6447 }
6448
6449 /**
6450  * i40e_prep_for_reset - prep for the core to reset
6451  * @pf: board private structure
6452  *
6453  * Close up the VFs and other things in prep for PF Reset.
6454   **/
6455 static void i40e_prep_for_reset(struct i40e_pf *pf)
6456 {
6457         struct i40e_hw *hw = &pf->hw;
6458         i40e_status ret = 0;
6459         u32 v;
6460
6461         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6462         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6463                 return;
6464
6465         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6466
6467         /* quiesce the VSIs and their queues that are not already DOWN */
6468         i40e_pf_quiesce_all_vsi(pf);
6469
6470         for (v = 0; v < pf->num_alloc_vsi; v++) {
6471                 if (pf->vsi[v])
6472                         pf->vsi[v]->seid = 0;
6473         }
6474
6475         i40e_shutdown_adminq(&pf->hw);
6476
6477         /* call shutdown HMC */
6478         if (hw->hmc.hmc_obj) {
6479                 ret = i40e_shutdown_lan_hmc(hw);
6480                 if (ret)
6481                         dev_warn(&pf->pdev->dev,
6482                                  "shutdown_lan_hmc failed: %d\n", ret);
6483         }
6484 }
6485
6486 /**
6487  * i40e_send_version - update firmware with driver version
6488  * @pf: PF struct
6489  */
6490 static void i40e_send_version(struct i40e_pf *pf)
6491 {
6492         struct i40e_driver_version dv;
6493
6494         dv.major_version = DRV_VERSION_MAJOR;
6495         dv.minor_version = DRV_VERSION_MINOR;
6496         dv.build_version = DRV_VERSION_BUILD;
6497         dv.subbuild_version = 0;
6498         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6499         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6500 }
6501
6502 /**
6503  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6504  * @pf: board private structure
6505  * @reinit: if the Main VSI needs to re-initialized.
6506  **/
6507 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6508 {
6509         struct i40e_hw *hw = &pf->hw;
6510         u8 set_fc_aq_fail = 0;
6511         i40e_status ret;
6512         u32 v;
6513
6514         /* Now we wait for GRST to settle out.
6515          * We don't have to delete the VEBs or VSIs from the hw switch
6516          * because the reset will make them disappear.
6517          */
6518         ret = i40e_pf_reset(hw);
6519         if (ret) {
6520                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6521                 set_bit(__I40E_RESET_FAILED, &pf->state);
6522                 goto clear_recovery;
6523         }
6524         pf->pfr_count++;
6525
6526         if (test_bit(__I40E_DOWN, &pf->state))
6527                 goto clear_recovery;
6528         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6529
6530         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6531         ret = i40e_init_adminq(&pf->hw);
6532         if (ret) {
6533                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6534                          i40e_stat_str(&pf->hw, ret),
6535                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6536                 goto clear_recovery;
6537         }
6538
6539         /* re-verify the eeprom if we just had an EMP reset */
6540         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6541                 i40e_verify_eeprom(pf);
6542
6543         i40e_clear_pxe_mode(hw);
6544         ret = i40e_get_capabilities(pf);
6545         if (ret)
6546                 goto end_core_reset;
6547
6548         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6549                                 hw->func_caps.num_rx_qp,
6550                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6551         if (ret) {
6552                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6553                 goto end_core_reset;
6554         }
6555         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6556         if (ret) {
6557                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6558                 goto end_core_reset;
6559         }
6560
6561 #ifdef CONFIG_I40E_DCB
6562         ret = i40e_init_pf_dcb(pf);
6563         if (ret) {
6564                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6565                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6566                 /* Continue without DCB enabled */
6567         }
6568 #endif /* CONFIG_I40E_DCB */
6569 #ifdef I40E_FCOE
6570         i40e_init_pf_fcoe(pf);
6571
6572 #endif
6573         /* do basic switch setup */
6574         ret = i40e_setup_pf_switch(pf, reinit);
6575         if (ret)
6576                 goto end_core_reset;
6577
6578         /* driver is only interested in link up/down and module qualification
6579          * reports from firmware
6580          */
6581         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6582                                        I40E_AQ_EVENT_LINK_UPDOWN |
6583                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6584         if (ret)
6585                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6586                          i40e_stat_str(&pf->hw, ret),
6587                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6588
6589         /* make sure our flow control settings are restored */
6590         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6591         if (ret)
6592                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
6593                         i40e_stat_str(&pf->hw, ret),
6594                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6595
6596         /* Rebuild the VSIs and VEBs that existed before reset.
6597          * They are still in our local switch element arrays, so only
6598          * need to rebuild the switch model in the HW.
6599          *
6600          * If there were VEBs but the reconstitution failed, we'll try
6601          * try to recover minimal use by getting the basic PF VSI working.
6602          */
6603         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6604                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6605                 /* find the one VEB connected to the MAC, and find orphans */
6606                 for (v = 0; v < I40E_MAX_VEB; v++) {
6607                         if (!pf->veb[v])
6608                                 continue;
6609
6610                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6611                             pf->veb[v]->uplink_seid == 0) {
6612                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6613
6614                                 if (!ret)
6615                                         continue;
6616
6617                                 /* If Main VEB failed, we're in deep doodoo,
6618                                  * so give up rebuilding the switch and set up
6619                                  * for minimal rebuild of PF VSI.
6620                                  * If orphan failed, we'll report the error
6621                                  * but try to keep going.
6622                                  */
6623                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6624                                         dev_info(&pf->pdev->dev,
6625                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6626                                                  ret);
6627                                         pf->vsi[pf->lan_vsi]->uplink_seid
6628                                                                 = pf->mac_seid;
6629                                         break;
6630                                 } else if (pf->veb[v]->uplink_seid == 0) {
6631                                         dev_info(&pf->pdev->dev,
6632                                                  "rebuild of orphan VEB failed: %d\n",
6633                                                  ret);
6634                                 }
6635                         }
6636                 }
6637         }
6638
6639         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6640                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6641                 /* no VEB, so rebuild only the Main VSI */
6642                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6643                 if (ret) {
6644                         dev_info(&pf->pdev->dev,
6645                                  "rebuild of Main VSI failed: %d\n", ret);
6646                         goto end_core_reset;
6647                 }
6648         }
6649
6650         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
6651             (pf->hw.aq.fw_maj_ver < 4)) {
6652                 msleep(75);
6653                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6654                 if (ret)
6655                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6656                                  i40e_stat_str(&pf->hw, ret),
6657                                  i40e_aq_str(&pf->hw,
6658                                              pf->hw.aq.asq_last_status));
6659         }
6660         /* reinit the misc interrupt */
6661         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6662                 ret = i40e_setup_misc_vector(pf);
6663
6664         /* restart the VSIs that were rebuilt and running before the reset */
6665         i40e_pf_unquiesce_all_vsi(pf);
6666
6667         if (pf->num_alloc_vfs) {
6668                 for (v = 0; v < pf->num_alloc_vfs; v++)
6669                         i40e_reset_vf(&pf->vf[v], true);
6670         }
6671
6672         /* tell the firmware that we're starting */
6673         i40e_send_version(pf);
6674
6675 end_core_reset:
6676         clear_bit(__I40E_RESET_FAILED, &pf->state);
6677 clear_recovery:
6678         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6679 }
6680
6681 /**
6682  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6683  * @pf: board private structure
6684  *
6685  * Close up the VFs and other things in prep for a Core Reset,
6686  * then get ready to rebuild the world.
6687  **/
6688 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6689 {
6690         i40e_prep_for_reset(pf);
6691         i40e_reset_and_rebuild(pf, false);
6692 }
6693
6694 /**
6695  * i40e_handle_mdd_event
6696  * @pf: pointer to the PF structure
6697  *
6698  * Called from the MDD irq handler to identify possibly malicious vfs
6699  **/
6700 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6701 {
6702         struct i40e_hw *hw = &pf->hw;
6703         bool mdd_detected = false;
6704         bool pf_mdd_detected = false;
6705         struct i40e_vf *vf;
6706         u32 reg;
6707         int i;
6708
6709         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6710                 return;
6711
6712         /* find what triggered the MDD event */
6713         reg = rd32(hw, I40E_GL_MDET_TX);
6714         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6715                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6716                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6717                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6718                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6719                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6720                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6721                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6722                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6723                                 pf->hw.func_caps.base_queue;
6724                 if (netif_msg_tx_err(pf))
6725                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6726                                  event, queue, pf_num, vf_num);
6727                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6728                 mdd_detected = true;
6729         }
6730         reg = rd32(hw, I40E_GL_MDET_RX);
6731         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6732                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6733                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6734                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6735                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6736                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6737                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6738                                 pf->hw.func_caps.base_queue;
6739                 if (netif_msg_rx_err(pf))
6740                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6741                                  event, queue, func);
6742                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6743                 mdd_detected = true;
6744         }
6745
6746         if (mdd_detected) {
6747                 reg = rd32(hw, I40E_PF_MDET_TX);
6748                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6749                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6750                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6751                         pf_mdd_detected = true;
6752                 }
6753                 reg = rd32(hw, I40E_PF_MDET_RX);
6754                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6755                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6756                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6757                         pf_mdd_detected = true;
6758                 }
6759                 /* Queue belongs to the PF, initiate a reset */
6760                 if (pf_mdd_detected) {
6761                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6762                         i40e_service_event_schedule(pf);
6763                 }
6764         }
6765
6766         /* see if one of the VFs needs its hand slapped */
6767         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6768                 vf = &(pf->vf[i]);
6769                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6770                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6771                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6772                         vf->num_mdd_events++;
6773                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6774                                  i);
6775                 }
6776
6777                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6778                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6779                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6780                         vf->num_mdd_events++;
6781                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6782                                  i);
6783                 }
6784
6785                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6786                         dev_info(&pf->pdev->dev,
6787                                  "Too many MDD events on VF %d, disabled\n", i);
6788                         dev_info(&pf->pdev->dev,
6789                                  "Use PF Control I/F to re-enable the VF\n");
6790                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6791                 }
6792         }
6793
6794         /* re-enable mdd interrupt cause */
6795         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6796         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6797         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6798         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6799         i40e_flush(hw);
6800 }
6801
6802 #ifdef CONFIG_I40E_VXLAN
6803 /**
6804  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6805  * @pf: board private structure
6806  **/
6807 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6808 {
6809         struct i40e_hw *hw = &pf->hw;
6810         i40e_status ret;
6811         __be16 port;
6812         int i;
6813
6814         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
6815                 return;
6816
6817         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
6818
6819         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6820                 if (pf->pending_vxlan_bitmap & BIT_ULL(i)) {
6821                         pf->pending_vxlan_bitmap &= ~BIT_ULL(i);
6822                         port = pf->vxlan_ports[i];
6823                         if (port)
6824                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
6825                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
6826                                                      NULL, NULL);
6827                         else
6828                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
6829
6830                         if (ret) {
6831                                 dev_info(&pf->pdev->dev,
6832                                          "%s vxlan port %d, index %d failed, err %s aq_err %s\n",
6833                                          port ? "add" : "delete",
6834                                          ntohs(port), i,
6835                                          i40e_stat_str(&pf->hw, ret),
6836                                          i40e_aq_str(&pf->hw,
6837                                                     pf->hw.aq.asq_last_status));
6838                                 pf->vxlan_ports[i] = 0;
6839                         }
6840                 }
6841         }
6842 }
6843
6844 #endif
6845 /**
6846  * i40e_service_task - Run the driver's async subtasks
6847  * @work: pointer to work_struct containing our data
6848  **/
6849 static void i40e_service_task(struct work_struct *work)
6850 {
6851         struct i40e_pf *pf = container_of(work,
6852                                           struct i40e_pf,
6853                                           service_task);
6854         unsigned long start_time = jiffies;
6855
6856         /* don't bother with service tasks if a reset is in progress */
6857         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6858                 i40e_service_event_complete(pf);
6859                 return;
6860         }
6861
6862         i40e_detect_recover_hung(pf);
6863         i40e_reset_subtask(pf);
6864         i40e_handle_mdd_event(pf);
6865         i40e_vc_process_vflr_event(pf);
6866         i40e_watchdog_subtask(pf);
6867         i40e_fdir_reinit_subtask(pf);
6868         i40e_sync_filters_subtask(pf);
6869 #ifdef CONFIG_I40E_VXLAN
6870         i40e_sync_vxlan_filters_subtask(pf);
6871 #endif
6872         i40e_clean_adminq_subtask(pf);
6873
6874         i40e_service_event_complete(pf);
6875
6876         /* If the tasks have taken longer than one timer cycle or there
6877          * is more work to be done, reschedule the service task now
6878          * rather than wait for the timer to tick again.
6879          */
6880         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
6881             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
6882             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
6883             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
6884                 i40e_service_event_schedule(pf);
6885 }
6886
6887 /**
6888  * i40e_service_timer - timer callback
6889  * @data: pointer to PF struct
6890  **/
6891 static void i40e_service_timer(unsigned long data)
6892 {
6893         struct i40e_pf *pf = (struct i40e_pf *)data;
6894
6895         mod_timer(&pf->service_timer,
6896                   round_jiffies(jiffies + pf->service_timer_period));
6897         i40e_service_event_schedule(pf);
6898 }
6899
6900 /**
6901  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6902  * @vsi: the VSI being configured
6903  **/
6904 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6905 {
6906         struct i40e_pf *pf = vsi->back;
6907
6908         switch (vsi->type) {
6909         case I40E_VSI_MAIN:
6910                 vsi->alloc_queue_pairs = pf->num_lan_qps;
6911                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6912                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6913                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6914                         vsi->num_q_vectors = pf->num_lan_msix;
6915                 else
6916                         vsi->num_q_vectors = 1;
6917
6918                 break;
6919
6920         case I40E_VSI_FDIR:
6921                 vsi->alloc_queue_pairs = 1;
6922                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6923                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6924                 vsi->num_q_vectors = 1;
6925                 break;
6926
6927         case I40E_VSI_VMDQ2:
6928                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6929                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6930                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6931                 vsi->num_q_vectors = pf->num_vmdq_msix;
6932                 break;
6933
6934         case I40E_VSI_SRIOV:
6935                 vsi->alloc_queue_pairs = pf->num_vf_qps;
6936                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6937                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6938                 break;
6939
6940 #ifdef I40E_FCOE
6941         case I40E_VSI_FCOE:
6942                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
6943                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6944                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6945                 vsi->num_q_vectors = pf->num_fcoe_msix;
6946                 break;
6947
6948 #endif /* I40E_FCOE */
6949         default:
6950                 WARN_ON(1);
6951                 return -ENODATA;
6952         }
6953
6954         return 0;
6955 }
6956
6957 /**
6958  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6959  * @type: VSI pointer
6960  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6961  *
6962  * On error: returns error code (negative)
6963  * On success: returns 0
6964  **/
6965 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6966 {
6967         int size;
6968         int ret = 0;
6969
6970         /* allocate memory for both Tx and Rx ring pointers */
6971         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6972         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6973         if (!vsi->tx_rings)
6974                 return -ENOMEM;
6975         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6976
6977         if (alloc_qvectors) {
6978                 /* allocate memory for q_vector pointers */
6979                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
6980                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6981                 if (!vsi->q_vectors) {
6982                         ret = -ENOMEM;
6983                         goto err_vectors;
6984                 }
6985         }
6986         return ret;
6987
6988 err_vectors:
6989         kfree(vsi->tx_rings);
6990         return ret;
6991 }
6992
6993 /**
6994  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
6995  * @pf: board private structure
6996  * @type: type of VSI
6997  *
6998  * On error: returns error code (negative)
6999  * On success: returns vsi index in PF (positive)
7000  **/
7001 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7002 {
7003         int ret = -ENODEV;
7004         struct i40e_vsi *vsi;
7005         int vsi_idx;
7006         int i;
7007
7008         /* Need to protect the allocation of the VSIs at the PF level */
7009         mutex_lock(&pf->switch_mutex);
7010
7011         /* VSI list may be fragmented if VSI creation/destruction has
7012          * been happening.  We can afford to do a quick scan to look
7013          * for any free VSIs in the list.
7014          *
7015          * find next empty vsi slot, looping back around if necessary
7016          */
7017         i = pf->next_vsi;
7018         while (i < pf->num_alloc_vsi && pf->vsi[i])
7019                 i++;
7020         if (i >= pf->num_alloc_vsi) {
7021                 i = 0;
7022                 while (i < pf->next_vsi && pf->vsi[i])
7023                         i++;
7024         }
7025
7026         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7027                 vsi_idx = i;             /* Found one! */
7028         } else {
7029                 ret = -ENODEV;
7030                 goto unlock_pf;  /* out of VSI slots! */
7031         }
7032         pf->next_vsi = ++i;
7033
7034         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7035         if (!vsi) {
7036                 ret = -ENOMEM;
7037                 goto unlock_pf;
7038         }
7039         vsi->type = type;
7040         vsi->back = pf;
7041         set_bit(__I40E_DOWN, &vsi->state);
7042         vsi->flags = 0;
7043         vsi->idx = vsi_idx;
7044         vsi->rx_itr_setting = pf->rx_itr_default;
7045         vsi->tx_itr_setting = pf->tx_itr_default;
7046         vsi->int_rate_limit = 0;
7047         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7048                                 pf->rss_table_size : 64;
7049         vsi->netdev_registered = false;
7050         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7051         INIT_LIST_HEAD(&vsi->mac_filter_list);
7052         vsi->irqs_ready = false;
7053
7054         ret = i40e_set_num_rings_in_vsi(vsi);
7055         if (ret)
7056                 goto err_rings;
7057
7058         ret = i40e_vsi_alloc_arrays(vsi, true);
7059         if (ret)
7060                 goto err_rings;
7061
7062         /* Setup default MSIX irq handler for VSI */
7063         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7064
7065         pf->vsi[vsi_idx] = vsi;
7066         ret = vsi_idx;
7067         goto unlock_pf;
7068
7069 err_rings:
7070         pf->next_vsi = i - 1;
7071         kfree(vsi);
7072 unlock_pf:
7073         mutex_unlock(&pf->switch_mutex);
7074         return ret;
7075 }
7076
7077 /**
7078  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7079  * @type: VSI pointer
7080  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7081  *
7082  * On error: returns error code (negative)
7083  * On success: returns 0
7084  **/
7085 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7086 {
7087         /* free the ring and vector containers */
7088         if (free_qvectors) {
7089                 kfree(vsi->q_vectors);
7090                 vsi->q_vectors = NULL;
7091         }
7092         kfree(vsi->tx_rings);
7093         vsi->tx_rings = NULL;
7094         vsi->rx_rings = NULL;
7095 }
7096
7097 /**
7098  * i40e_vsi_clear - Deallocate the VSI provided
7099  * @vsi: the VSI being un-configured
7100  **/
7101 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7102 {
7103         struct i40e_pf *pf;
7104
7105         if (!vsi)
7106                 return 0;
7107
7108         if (!vsi->back)
7109                 goto free_vsi;
7110         pf = vsi->back;
7111
7112         mutex_lock(&pf->switch_mutex);
7113         if (!pf->vsi[vsi->idx]) {
7114                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7115                         vsi->idx, vsi->idx, vsi, vsi->type);
7116                 goto unlock_vsi;
7117         }
7118
7119         if (pf->vsi[vsi->idx] != vsi) {
7120                 dev_err(&pf->pdev->dev,
7121                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7122                         pf->vsi[vsi->idx]->idx,
7123                         pf->vsi[vsi->idx],
7124                         pf->vsi[vsi->idx]->type,
7125                         vsi->idx, vsi, vsi->type);
7126                 goto unlock_vsi;
7127         }
7128
7129         /* updates the PF for this cleared vsi */
7130         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7131         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7132
7133         i40e_vsi_free_arrays(vsi, true);
7134
7135         pf->vsi[vsi->idx] = NULL;
7136         if (vsi->idx < pf->next_vsi)
7137                 pf->next_vsi = vsi->idx;
7138
7139 unlock_vsi:
7140         mutex_unlock(&pf->switch_mutex);
7141 free_vsi:
7142         kfree(vsi);
7143
7144         return 0;
7145 }
7146
7147 /**
7148  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7149  * @vsi: the VSI being cleaned
7150  **/
7151 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7152 {
7153         int i;
7154
7155         if (vsi->tx_rings && vsi->tx_rings[0]) {
7156                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7157                         kfree_rcu(vsi->tx_rings[i], rcu);
7158                         vsi->tx_rings[i] = NULL;
7159                         vsi->rx_rings[i] = NULL;
7160                 }
7161         }
7162 }
7163
7164 /**
7165  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7166  * @vsi: the VSI being configured
7167  **/
7168 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7169 {
7170         struct i40e_ring *tx_ring, *rx_ring;
7171         struct i40e_pf *pf = vsi->back;
7172         int i;
7173
7174         /* Set basic values in the rings to be used later during open() */
7175         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7176                 /* allocate space for both Tx and Rx in one shot */
7177                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7178                 if (!tx_ring)
7179                         goto err_out;
7180
7181                 tx_ring->queue_index = i;
7182                 tx_ring->reg_idx = vsi->base_queue + i;
7183                 tx_ring->ring_active = false;
7184                 tx_ring->vsi = vsi;
7185                 tx_ring->netdev = vsi->netdev;
7186                 tx_ring->dev = &pf->pdev->dev;
7187                 tx_ring->count = vsi->num_desc;
7188                 tx_ring->size = 0;
7189                 tx_ring->dcb_tc = 0;
7190                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7191                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7192                 if (vsi->back->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE)
7193                         tx_ring->flags |= I40E_TXR_FLAGS_OUTER_UDP_CSUM;
7194                 vsi->tx_rings[i] = tx_ring;
7195
7196                 rx_ring = &tx_ring[1];
7197                 rx_ring->queue_index = i;
7198                 rx_ring->reg_idx = vsi->base_queue + i;
7199                 rx_ring->ring_active = false;
7200                 rx_ring->vsi = vsi;
7201                 rx_ring->netdev = vsi->netdev;
7202                 rx_ring->dev = &pf->pdev->dev;
7203                 rx_ring->count = vsi->num_desc;
7204                 rx_ring->size = 0;
7205                 rx_ring->dcb_tc = 0;
7206                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
7207                         set_ring_16byte_desc_enabled(rx_ring);
7208                 else
7209                         clear_ring_16byte_desc_enabled(rx_ring);
7210                 vsi->rx_rings[i] = rx_ring;
7211         }
7212
7213         return 0;
7214
7215 err_out:
7216         i40e_vsi_clear_rings(vsi);
7217         return -ENOMEM;
7218 }
7219
7220 /**
7221  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7222  * @pf: board private structure
7223  * @vectors: the number of MSI-X vectors to request
7224  *
7225  * Returns the number of vectors reserved, or error
7226  **/
7227 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7228 {
7229         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7230                                         I40E_MIN_MSIX, vectors);
7231         if (vectors < 0) {
7232                 dev_info(&pf->pdev->dev,
7233                          "MSI-X vector reservation failed: %d\n", vectors);
7234                 vectors = 0;
7235         }
7236
7237         return vectors;
7238 }
7239
7240 /**
7241  * i40e_init_msix - Setup the MSIX capability
7242  * @pf: board private structure
7243  *
7244  * Work with the OS to set up the MSIX vectors needed.
7245  *
7246  * Returns the number of vectors reserved or negative on failure
7247  **/
7248 static int i40e_init_msix(struct i40e_pf *pf)
7249 {
7250         struct i40e_hw *hw = &pf->hw;
7251         int vectors_left;
7252         int v_budget, i;
7253         int v_actual;
7254
7255         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7256                 return -ENODEV;
7257
7258         /* The number of vectors we'll request will be comprised of:
7259          *   - Add 1 for "other" cause for Admin Queue events, etc.
7260          *   - The number of LAN queue pairs
7261          *      - Queues being used for RSS.
7262          *              We don't need as many as max_rss_size vectors.
7263          *              use rss_size instead in the calculation since that
7264          *              is governed by number of cpus in the system.
7265          *      - assumes symmetric Tx/Rx pairing
7266          *   - The number of VMDq pairs
7267 #ifdef I40E_FCOE
7268          *   - The number of FCOE qps.
7269 #endif
7270          * Once we count this up, try the request.
7271          *
7272          * If we can't get what we want, we'll simplify to nearly nothing
7273          * and try again.  If that still fails, we punt.
7274          */
7275         vectors_left = hw->func_caps.num_msix_vectors;
7276         v_budget = 0;
7277
7278         /* reserve one vector for miscellaneous handler */
7279         if (vectors_left) {
7280                 v_budget++;
7281                 vectors_left--;
7282         }
7283
7284         /* reserve vectors for the main PF traffic queues */
7285         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7286         vectors_left -= pf->num_lan_msix;
7287         v_budget += pf->num_lan_msix;
7288
7289         /* reserve one vector for sideband flow director */
7290         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7291                 if (vectors_left) {
7292                         v_budget++;
7293                         vectors_left--;
7294                 } else {
7295                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7296                 }
7297         }
7298
7299 #ifdef I40E_FCOE
7300         /* can we reserve enough for FCoE? */
7301         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7302                 if (!vectors_left)
7303                         pf->num_fcoe_msix = 0;
7304                 else if (vectors_left >= pf->num_fcoe_qps)
7305                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7306                 else
7307                         pf->num_fcoe_msix = 1;
7308                 v_budget += pf->num_fcoe_msix;
7309                 vectors_left -= pf->num_fcoe_msix;
7310         }
7311
7312 #endif
7313         /* any vectors left over go for VMDq support */
7314         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7315                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7316                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7317
7318                 /* if we're short on vectors for what's desired, we limit
7319                  * the queues per vmdq.  If this is still more than are
7320                  * available, the user will need to change the number of
7321                  * queues/vectors used by the PF later with the ethtool
7322                  * channels command
7323                  */
7324                 if (vmdq_vecs < vmdq_vecs_wanted)
7325                         pf->num_vmdq_qps = 1;
7326                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7327
7328                 v_budget += vmdq_vecs;
7329                 vectors_left -= vmdq_vecs;
7330         }
7331
7332         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7333                                    GFP_KERNEL);
7334         if (!pf->msix_entries)
7335                 return -ENOMEM;
7336
7337         for (i = 0; i < v_budget; i++)
7338                 pf->msix_entries[i].entry = i;
7339         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7340
7341         if (v_actual != v_budget) {
7342                 /* If we have limited resources, we will start with no vectors
7343                  * for the special features and then allocate vectors to some
7344                  * of these features based on the policy and at the end disable
7345                  * the features that did not get any vectors.
7346                  */
7347 #ifdef I40E_FCOE
7348                 pf->num_fcoe_qps = 0;
7349                 pf->num_fcoe_msix = 0;
7350 #endif
7351                 pf->num_vmdq_msix = 0;
7352         }
7353
7354         if (v_actual < I40E_MIN_MSIX) {
7355                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7356                 kfree(pf->msix_entries);
7357                 pf->msix_entries = NULL;
7358                 return -ENODEV;
7359
7360         } else if (v_actual == I40E_MIN_MSIX) {
7361                 /* Adjust for minimal MSIX use */
7362                 pf->num_vmdq_vsis = 0;
7363                 pf->num_vmdq_qps = 0;
7364                 pf->num_lan_qps = 1;
7365                 pf->num_lan_msix = 1;
7366
7367         } else if (v_actual != v_budget) {
7368                 int vec;
7369
7370                 /* reserve the misc vector */
7371                 vec = v_actual - 1;
7372
7373                 /* Scale vector usage down */
7374                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7375                 pf->num_vmdq_vsis = 1;
7376                 pf->num_vmdq_qps = 1;
7377                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7378
7379                 /* partition out the remaining vectors */
7380                 switch (vec) {
7381                 case 2:
7382                         pf->num_lan_msix = 1;
7383                         break;
7384                 case 3:
7385 #ifdef I40E_FCOE
7386                         /* give one vector to FCoE */
7387                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7388                                 pf->num_lan_msix = 1;
7389                                 pf->num_fcoe_msix = 1;
7390                         }
7391 #else
7392                         pf->num_lan_msix = 2;
7393 #endif
7394                         break;
7395                 default:
7396 #ifdef I40E_FCOE
7397                         /* give one vector to FCoE */
7398                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7399                                 pf->num_fcoe_msix = 1;
7400                                 vec--;
7401                         }
7402 #endif
7403                         /* give the rest to the PF */
7404                         pf->num_lan_msix = min_t(int, vec, pf->num_lan_qps);
7405                         break;
7406                 }
7407         }
7408
7409         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7410             (pf->num_vmdq_msix == 0)) {
7411                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7412                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7413         }
7414 #ifdef I40E_FCOE
7415
7416         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7417                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7418                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7419         }
7420 #endif
7421         return v_actual;
7422 }
7423
7424 /**
7425  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7426  * @vsi: the VSI being configured
7427  * @v_idx: index of the vector in the vsi struct
7428  *
7429  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7430  **/
7431 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7432 {
7433         struct i40e_q_vector *q_vector;
7434
7435         /* allocate q_vector */
7436         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7437         if (!q_vector)
7438                 return -ENOMEM;
7439
7440         q_vector->vsi = vsi;
7441         q_vector->v_idx = v_idx;
7442         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7443         if (vsi->netdev)
7444                 netif_napi_add(vsi->netdev, &q_vector->napi,
7445                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7446
7447         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7448         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7449
7450         /* tie q_vector and vsi together */
7451         vsi->q_vectors[v_idx] = q_vector;
7452
7453         return 0;
7454 }
7455
7456 /**
7457  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7458  * @vsi: the VSI being configured
7459  *
7460  * We allocate one q_vector per queue interrupt.  If allocation fails we
7461  * return -ENOMEM.
7462  **/
7463 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7464 {
7465         struct i40e_pf *pf = vsi->back;
7466         int v_idx, num_q_vectors;
7467         int err;
7468
7469         /* if not MSIX, give the one vector only to the LAN VSI */
7470         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7471                 num_q_vectors = vsi->num_q_vectors;
7472         else if (vsi == pf->vsi[pf->lan_vsi])
7473                 num_q_vectors = 1;
7474         else
7475                 return -EINVAL;
7476
7477         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7478                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7479                 if (err)
7480                         goto err_out;
7481         }
7482
7483         return 0;
7484
7485 err_out:
7486         while (v_idx--)
7487                 i40e_free_q_vector(vsi, v_idx);
7488
7489         return err;
7490 }
7491
7492 /**
7493  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7494  * @pf: board private structure to initialize
7495  **/
7496 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7497 {
7498         int vectors = 0;
7499         ssize_t size;
7500
7501         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7502                 vectors = i40e_init_msix(pf);
7503                 if (vectors < 0) {
7504                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7505 #ifdef I40E_FCOE
7506                                        I40E_FLAG_FCOE_ENABLED   |
7507 #endif
7508                                        I40E_FLAG_RSS_ENABLED    |
7509                                        I40E_FLAG_DCB_CAPABLE    |
7510                                        I40E_FLAG_SRIOV_ENABLED  |
7511                                        I40E_FLAG_FD_SB_ENABLED  |
7512                                        I40E_FLAG_FD_ATR_ENABLED |
7513                                        I40E_FLAG_VMDQ_ENABLED);
7514
7515                         /* rework the queue expectations without MSIX */
7516                         i40e_determine_queue_usage(pf);
7517                 }
7518         }
7519
7520         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7521             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7522                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7523                 vectors = pci_enable_msi(pf->pdev);
7524                 if (vectors < 0) {
7525                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7526                                  vectors);
7527                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7528                 }
7529                 vectors = 1;  /* one MSI or Legacy vector */
7530         }
7531
7532         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7533                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7534
7535         /* set up vector assignment tracking */
7536         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7537         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7538         if (!pf->irq_pile) {
7539                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7540                 return -ENOMEM;
7541         }
7542         pf->irq_pile->num_entries = vectors;
7543         pf->irq_pile->search_hint = 0;
7544
7545         /* track first vector for misc interrupts, ignore return */
7546         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7547
7548         return 0;
7549 }
7550
7551 /**
7552  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7553  * @pf: board private structure
7554  *
7555  * This sets up the handler for MSIX 0, which is used to manage the
7556  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7557  * when in MSI or Legacy interrupt mode.
7558  **/
7559 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7560 {
7561         struct i40e_hw *hw = &pf->hw;
7562         int err = 0;
7563
7564         /* Only request the irq if this is the first time through, and
7565          * not when we're rebuilding after a Reset
7566          */
7567         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7568                 err = request_irq(pf->msix_entries[0].vector,
7569                                   i40e_intr, 0, pf->int_name, pf);
7570                 if (err) {
7571                         dev_info(&pf->pdev->dev,
7572                                  "request_irq for %s failed: %d\n",
7573                                  pf->int_name, err);
7574                         return -EFAULT;
7575                 }
7576         }
7577
7578         i40e_enable_misc_int_causes(pf);
7579
7580         /* associate no queues to the misc vector */
7581         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7582         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7583
7584         i40e_flush(hw);
7585
7586         i40e_irq_dynamic_enable_icr0(pf);
7587
7588         return err;
7589 }
7590
7591 /**
7592  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7593  * @vsi: vsi structure
7594  * @seed: RSS hash seed
7595  **/
7596 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed)
7597 {
7598         struct i40e_aqc_get_set_rss_key_data rss_key;
7599         struct i40e_pf *pf = vsi->back;
7600         struct i40e_hw *hw = &pf->hw;
7601         bool pf_lut = false;
7602         u8 *rss_lut;
7603         int ret, i;
7604
7605         memset(&rss_key, 0, sizeof(rss_key));
7606         memcpy(&rss_key, seed, sizeof(rss_key));
7607
7608         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7609         if (!rss_lut)
7610                 return -ENOMEM;
7611
7612         /* Populate the LUT with max no. of queues in round robin fashion */
7613         for (i = 0; i < vsi->rss_table_size; i++)
7614                 rss_lut[i] = i % vsi->rss_size;
7615
7616         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
7617         if (ret) {
7618                 dev_info(&pf->pdev->dev,
7619                          "Cannot set RSS key, err %s aq_err %s\n",
7620                          i40e_stat_str(&pf->hw, ret),
7621                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7622                 goto config_rss_aq_out;
7623         }
7624
7625         if (vsi->type == I40E_VSI_MAIN)
7626                 pf_lut = true;
7627
7628         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
7629                                   vsi->rss_table_size);
7630         if (ret)
7631                 dev_info(&pf->pdev->dev,
7632                          "Cannot set RSS lut, err %s aq_err %s\n",
7633                          i40e_stat_str(&pf->hw, ret),
7634                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7635
7636 config_rss_aq_out:
7637         kfree(rss_lut);
7638         return ret;
7639 }
7640
7641 /**
7642  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
7643  * @vsi: VSI structure
7644  **/
7645 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
7646 {
7647         u8 seed[I40E_HKEY_ARRAY_SIZE];
7648         struct i40e_pf *pf = vsi->back;
7649
7650         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7651         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7652
7653         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7654                 return i40e_config_rss_aq(vsi, seed);
7655
7656         return 0;
7657 }
7658
7659 /**
7660  * i40e_config_rss_reg - Prepare for RSS if used
7661  * @pf: board private structure
7662  * @seed: RSS hash seed
7663  **/
7664 static int i40e_config_rss_reg(struct i40e_pf *pf, const u8 *seed)
7665 {
7666         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7667         struct i40e_hw *hw = &pf->hw;
7668         u32 *seed_dw = (u32 *)seed;
7669         u32 current_queue = 0;
7670         u32 lut = 0;
7671         int i, j;
7672
7673         /* Fill out hash function seed */
7674         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7675                 wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
7676
7677         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++) {
7678                 lut = 0;
7679                 for (j = 0; j < 4; j++) {
7680                         if (current_queue == vsi->rss_size)
7681                                 current_queue = 0;
7682                         lut |= ((current_queue) << (8 * j));
7683                         current_queue++;
7684                 }
7685                 wr32(&pf->hw, I40E_PFQF_HLUT(i), lut);
7686         }
7687         i40e_flush(hw);
7688
7689         return 0;
7690 }
7691
7692 /**
7693  * i40e_config_rss - Prepare for RSS if used
7694  * @pf: board private structure
7695  **/
7696 static int i40e_config_rss(struct i40e_pf *pf)
7697 {
7698         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7699         u8 seed[I40E_HKEY_ARRAY_SIZE];
7700         struct i40e_hw *hw = &pf->hw;
7701         u32 reg_val;
7702         u64 hena;
7703
7704         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7705
7706         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
7707         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
7708                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
7709         hena |= i40e_pf_get_default_rss_hena(pf);
7710
7711         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
7712         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
7713
7714         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7715
7716         /* Determine the RSS table size based on the hardware capabilities */
7717         reg_val = rd32(hw, I40E_PFQF_CTL_0);
7718         reg_val = (pf->rss_table_size == 512) ?
7719                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
7720                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
7721         wr32(hw, I40E_PFQF_CTL_0, reg_val);
7722
7723         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7724                 return i40e_config_rss_aq(pf->vsi[pf->lan_vsi], seed);
7725         else
7726                 return i40e_config_rss_reg(pf, seed);
7727 }
7728
7729 /**
7730  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7731  * @pf: board private structure
7732  * @queue_count: the requested queue count for rss.
7733  *
7734  * returns 0 if rss is not enabled, if enabled returns the final rss queue
7735  * count which may be different from the requested queue count.
7736  **/
7737 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7738 {
7739         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7740         int new_rss_size;
7741
7742         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7743                 return 0;
7744
7745         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
7746
7747         if (queue_count != vsi->num_queue_pairs) {
7748                 vsi->req_queue_pairs = queue_count;
7749                 i40e_prep_for_reset(pf);
7750
7751                 pf->rss_size = new_rss_size;
7752
7753                 i40e_reset_and_rebuild(pf, true);
7754                 i40e_config_rss(pf);
7755         }
7756         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
7757         return pf->rss_size;
7758 }
7759
7760 /**
7761  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
7762  * @pf: board private structure
7763  **/
7764 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
7765 {
7766         i40e_status status;
7767         bool min_valid, max_valid;
7768         u32 max_bw, min_bw;
7769
7770         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
7771                                            &min_valid, &max_valid);
7772
7773         if (!status) {
7774                 if (min_valid)
7775                         pf->npar_min_bw = min_bw;
7776                 if (max_valid)
7777                         pf->npar_max_bw = max_bw;
7778         }
7779
7780         return status;
7781 }
7782
7783 /**
7784  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
7785  * @pf: board private structure
7786  **/
7787 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
7788 {
7789         struct i40e_aqc_configure_partition_bw_data bw_data;
7790         i40e_status status;
7791
7792         /* Set the valid bit for this PF */
7793         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
7794         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
7795         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
7796
7797         /* Set the new bandwidths */
7798         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
7799
7800         return status;
7801 }
7802
7803 /**
7804  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
7805  * @pf: board private structure
7806  **/
7807 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
7808 {
7809         /* Commit temporary BW setting to permanent NVM image */
7810         enum i40e_admin_queue_err last_aq_status;
7811         i40e_status ret;
7812         u16 nvm_word;
7813
7814         if (pf->hw.partition_id != 1) {
7815                 dev_info(&pf->pdev->dev,
7816                          "Commit BW only works on partition 1! This is partition %d",
7817                          pf->hw.partition_id);
7818                 ret = I40E_NOT_SUPPORTED;
7819                 goto bw_commit_out;
7820         }
7821
7822         /* Acquire NVM for read access */
7823         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
7824         last_aq_status = pf->hw.aq.asq_last_status;
7825         if (ret) {
7826                 dev_info(&pf->pdev->dev,
7827                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
7828                          i40e_stat_str(&pf->hw, ret),
7829                          i40e_aq_str(&pf->hw, last_aq_status));
7830                 goto bw_commit_out;
7831         }
7832
7833         /* Read word 0x10 of NVM - SW compatibility word 1 */
7834         ret = i40e_aq_read_nvm(&pf->hw,
7835                                I40E_SR_NVM_CONTROL_WORD,
7836                                0x10, sizeof(nvm_word), &nvm_word,
7837                                false, NULL);
7838         /* Save off last admin queue command status before releasing
7839          * the NVM
7840          */
7841         last_aq_status = pf->hw.aq.asq_last_status;
7842         i40e_release_nvm(&pf->hw);
7843         if (ret) {
7844                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
7845                          i40e_stat_str(&pf->hw, ret),
7846                          i40e_aq_str(&pf->hw, last_aq_status));
7847                 goto bw_commit_out;
7848         }
7849
7850         /* Wait a bit for NVM release to complete */
7851         msleep(50);
7852
7853         /* Acquire NVM for write access */
7854         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
7855         last_aq_status = pf->hw.aq.asq_last_status;
7856         if (ret) {
7857                 dev_info(&pf->pdev->dev,
7858                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
7859                          i40e_stat_str(&pf->hw, ret),
7860                          i40e_aq_str(&pf->hw, last_aq_status));
7861                 goto bw_commit_out;
7862         }
7863         /* Write it back out unchanged to initiate update NVM,
7864          * which will force a write of the shadow (alt) RAM to
7865          * the NVM - thus storing the bandwidth values permanently.
7866          */
7867         ret = i40e_aq_update_nvm(&pf->hw,
7868                                  I40E_SR_NVM_CONTROL_WORD,
7869                                  0x10, sizeof(nvm_word),
7870                                  &nvm_word, true, NULL);
7871         /* Save off last admin queue command status before releasing
7872          * the NVM
7873          */
7874         last_aq_status = pf->hw.aq.asq_last_status;
7875         i40e_release_nvm(&pf->hw);
7876         if (ret)
7877                 dev_info(&pf->pdev->dev,
7878                          "BW settings NOT SAVED, err %s aq_err %s\n",
7879                          i40e_stat_str(&pf->hw, ret),
7880                          i40e_aq_str(&pf->hw, last_aq_status));
7881 bw_commit_out:
7882
7883         return ret;
7884 }
7885
7886 /**
7887  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
7888  * @pf: board private structure to initialize
7889  *
7890  * i40e_sw_init initializes the Adapter private data structure.
7891  * Fields are initialized based on PCI device information and
7892  * OS network device settings (MTU size).
7893  **/
7894 static int i40e_sw_init(struct i40e_pf *pf)
7895 {
7896         int err = 0;
7897         int size;
7898
7899         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
7900                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
7901         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
7902         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
7903                 if (I40E_DEBUG_USER & debug)
7904                         pf->hw.debug_mask = debug;
7905                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
7906                                                 I40E_DEFAULT_MSG_ENABLE);
7907         }
7908
7909         /* Set default capability flags */
7910         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
7911                     I40E_FLAG_MSI_ENABLED     |
7912                     I40E_FLAG_LINK_POLLING_ENABLED |
7913                     I40E_FLAG_MSIX_ENABLED;
7914
7915         if (iommu_present(&pci_bus_type))
7916                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
7917         else
7918                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
7919
7920         /* Set default ITR */
7921         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
7922         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
7923
7924         /* Depending on PF configurations, it is possible that the RSS
7925          * maximum might end up larger than the available queues
7926          */
7927         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
7928         pf->rss_size = 1;
7929         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
7930         pf->rss_size_max = min_t(int, pf->rss_size_max,
7931                                  pf->hw.func_caps.num_tx_qp);
7932         if (pf->hw.func_caps.rss) {
7933                 pf->flags |= I40E_FLAG_RSS_ENABLED;
7934                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
7935         }
7936
7937         /* MFP mode enabled */
7938         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
7939                 pf->flags |= I40E_FLAG_MFP_ENABLED;
7940                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
7941                 if (i40e_get_npar_bw_setting(pf))
7942                         dev_warn(&pf->pdev->dev,
7943                                  "Could not get NPAR bw settings\n");
7944                 else
7945                         dev_info(&pf->pdev->dev,
7946                                  "Min BW = %8.8x, Max BW = %8.8x\n",
7947                                  pf->npar_min_bw, pf->npar_max_bw);
7948         }
7949
7950         /* FW/NVM is not yet fixed in this regard */
7951         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
7952             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
7953                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7954                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
7955                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
7956                     pf->hw.num_partitions > 1)
7957                         dev_info(&pf->pdev->dev,
7958                                  "Flow Director Sideband mode Disabled in MFP mode\n");
7959                 else
7960                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7961                 pf->fdir_pf_filter_count =
7962                                  pf->hw.func_caps.fd_filters_guaranteed;
7963                 pf->hw.fdir_shared_filter_count =
7964                                  pf->hw.func_caps.fd_filters_best_effort;
7965         }
7966
7967         if (pf->hw.func_caps.vmdq) {
7968                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
7969                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
7970         }
7971
7972 #ifdef I40E_FCOE
7973         i40e_init_pf_fcoe(pf);
7974
7975 #endif /* I40E_FCOE */
7976 #ifdef CONFIG_PCI_IOV
7977         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
7978                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
7979                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
7980                 pf->num_req_vfs = min_t(int,
7981                                         pf->hw.func_caps.num_vfs,
7982                                         I40E_MAX_VF_COUNT);
7983         }
7984 #endif /* CONFIG_PCI_IOV */
7985         if (pf->hw.mac.type == I40E_MAC_X722) {
7986                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
7987                              I40E_FLAG_128_QP_RSS_CAPABLE |
7988                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
7989                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
7990                              I40E_FLAG_WB_ON_ITR_CAPABLE |
7991                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE;
7992         }
7993         pf->eeprom_version = 0xDEAD;
7994         pf->lan_veb = I40E_NO_VEB;
7995         pf->lan_vsi = I40E_NO_VSI;
7996
7997         /* By default FW has this off for performance reasons */
7998         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
7999
8000         /* set up queue assignment tracking */
8001         size = sizeof(struct i40e_lump_tracking)
8002                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8003         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8004         if (!pf->qp_pile) {
8005                 err = -ENOMEM;
8006                 goto sw_init_done;
8007         }
8008         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8009         pf->qp_pile->search_hint = 0;
8010
8011         pf->tx_timeout_recovery_level = 1;
8012
8013         mutex_init(&pf->switch_mutex);
8014
8015         /* If NPAR is enabled nudge the Tx scheduler */
8016         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8017                 i40e_set_npar_bw_setting(pf);
8018
8019 sw_init_done:
8020         return err;
8021 }
8022
8023 /**
8024  * i40e_set_ntuple - set the ntuple feature flag and take action
8025  * @pf: board private structure to initialize
8026  * @features: the feature set that the stack is suggesting
8027  *
8028  * returns a bool to indicate if reset needs to happen
8029  **/
8030 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8031 {
8032         bool need_reset = false;
8033
8034         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8035          * the state changed, we need to reset.
8036          */
8037         if (features & NETIF_F_NTUPLE) {
8038                 /* Enable filters and mark for reset */
8039                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8040                         need_reset = true;
8041                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8042         } else {
8043                 /* turn off filters, mark for reset and clear SW filter list */
8044                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8045                         need_reset = true;
8046                         i40e_fdir_filter_exit(pf);
8047                 }
8048                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8049                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8050                 /* reset fd counters */
8051                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8052                 pf->fdir_pf_active_filters = 0;
8053                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8054                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8055                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8056                 /* if ATR was auto disabled it can be re-enabled. */
8057                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8058                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
8059                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8060         }
8061         return need_reset;
8062 }
8063
8064 /**
8065  * i40e_set_features - set the netdev feature flags
8066  * @netdev: ptr to the netdev being adjusted
8067  * @features: the feature set that the stack is suggesting
8068  **/
8069 static int i40e_set_features(struct net_device *netdev,
8070                              netdev_features_t features)
8071 {
8072         struct i40e_netdev_priv *np = netdev_priv(netdev);
8073         struct i40e_vsi *vsi = np->vsi;
8074         struct i40e_pf *pf = vsi->back;
8075         bool need_reset;
8076
8077         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8078                 i40e_vlan_stripping_enable(vsi);
8079         else
8080                 i40e_vlan_stripping_disable(vsi);
8081
8082         need_reset = i40e_set_ntuple(pf, features);
8083
8084         if (need_reset)
8085                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8086
8087         return 0;
8088 }
8089
8090 #ifdef CONFIG_I40E_VXLAN
8091 /**
8092  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
8093  * @pf: board private structure
8094  * @port: The UDP port to look up
8095  *
8096  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8097  **/
8098 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
8099 {
8100         u8 i;
8101
8102         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8103                 if (pf->vxlan_ports[i] == port)
8104                         return i;
8105         }
8106
8107         return i;
8108 }
8109
8110 /**
8111  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
8112  * @netdev: This physical port's netdev
8113  * @sa_family: Socket Family that VXLAN is notifying us about
8114  * @port: New UDP port number that VXLAN started listening to
8115  **/
8116 static void i40e_add_vxlan_port(struct net_device *netdev,
8117                                 sa_family_t sa_family, __be16 port)
8118 {
8119         struct i40e_netdev_priv *np = netdev_priv(netdev);
8120         struct i40e_vsi *vsi = np->vsi;
8121         struct i40e_pf *pf = vsi->back;
8122         u8 next_idx;
8123         u8 idx;
8124
8125         if (sa_family == AF_INET6)
8126                 return;
8127
8128         idx = i40e_get_vxlan_port_idx(pf, port);
8129
8130         /* Check if port already exists */
8131         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8132                 netdev_info(netdev, "vxlan port %d already offloaded\n",
8133                             ntohs(port));
8134                 return;
8135         }
8136
8137         /* Now check if there is space to add the new port */
8138         next_idx = i40e_get_vxlan_port_idx(pf, 0);
8139
8140         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8141                 netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
8142                             ntohs(port));
8143                 return;
8144         }
8145
8146         /* New port: add it and mark its index in the bitmap */
8147         pf->vxlan_ports[next_idx] = port;
8148         pf->pending_vxlan_bitmap |= BIT_ULL(next_idx);
8149         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8150 }
8151
8152 /**
8153  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
8154  * @netdev: This physical port's netdev
8155  * @sa_family: Socket Family that VXLAN is notifying us about
8156  * @port: UDP port number that VXLAN stopped listening to
8157  **/
8158 static void i40e_del_vxlan_port(struct net_device *netdev,
8159                                 sa_family_t sa_family, __be16 port)
8160 {
8161         struct i40e_netdev_priv *np = netdev_priv(netdev);
8162         struct i40e_vsi *vsi = np->vsi;
8163         struct i40e_pf *pf = vsi->back;
8164         u8 idx;
8165
8166         if (sa_family == AF_INET6)
8167                 return;
8168
8169         idx = i40e_get_vxlan_port_idx(pf, port);
8170
8171         /* Check if port already exists */
8172         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8173                 /* if port exists, set it to 0 (mark for deletion)
8174                  * and make it pending
8175                  */
8176                 pf->vxlan_ports[idx] = 0;
8177                 pf->pending_vxlan_bitmap |= BIT_ULL(idx);
8178                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8179         } else {
8180                 netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
8181                             ntohs(port));
8182         }
8183 }
8184
8185 #endif
8186 static int i40e_get_phys_port_id(struct net_device *netdev,
8187                                  struct netdev_phys_item_id *ppid)
8188 {
8189         struct i40e_netdev_priv *np = netdev_priv(netdev);
8190         struct i40e_pf *pf = np->vsi->back;
8191         struct i40e_hw *hw = &pf->hw;
8192
8193         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8194                 return -EOPNOTSUPP;
8195
8196         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8197         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8198
8199         return 0;
8200 }
8201
8202 /**
8203  * i40e_ndo_fdb_add - add an entry to the hardware database
8204  * @ndm: the input from the stack
8205  * @tb: pointer to array of nladdr (unused)
8206  * @dev: the net device pointer
8207  * @addr: the MAC address entry being added
8208  * @flags: instructions from stack about fdb operation
8209  */
8210 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8211                             struct net_device *dev,
8212                             const unsigned char *addr, u16 vid,
8213                             u16 flags)
8214 {
8215         struct i40e_netdev_priv *np = netdev_priv(dev);
8216         struct i40e_pf *pf = np->vsi->back;
8217         int err = 0;
8218
8219         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8220                 return -EOPNOTSUPP;
8221
8222         if (vid) {
8223                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8224                 return -EINVAL;
8225         }
8226
8227         /* Hardware does not support aging addresses so if a
8228          * ndm_state is given only allow permanent addresses
8229          */
8230         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8231                 netdev_info(dev, "FDB only supports static addresses\n");
8232                 return -EINVAL;
8233         }
8234
8235         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8236                 err = dev_uc_add_excl(dev, addr);
8237         else if (is_multicast_ether_addr(addr))
8238                 err = dev_mc_add_excl(dev, addr);
8239         else
8240                 err = -EINVAL;
8241
8242         /* Only return duplicate errors if NLM_F_EXCL is set */
8243         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8244                 err = 0;
8245
8246         return err;
8247 }
8248
8249 /**
8250  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8251  * @dev: the netdev being configured
8252  * @nlh: RTNL message
8253  *
8254  * Inserts a new hardware bridge if not already created and
8255  * enables the bridging mode requested (VEB or VEPA). If the
8256  * hardware bridge has already been inserted and the request
8257  * is to change the mode then that requires a PF reset to
8258  * allow rebuild of the components with required hardware
8259  * bridge mode enabled.
8260  **/
8261 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8262                                    struct nlmsghdr *nlh,
8263                                    u16 flags)
8264 {
8265         struct i40e_netdev_priv *np = netdev_priv(dev);
8266         struct i40e_vsi *vsi = np->vsi;
8267         struct i40e_pf *pf = vsi->back;
8268         struct i40e_veb *veb = NULL;
8269         struct nlattr *attr, *br_spec;
8270         int i, rem;
8271
8272         /* Only for PF VSI for now */
8273         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8274                 return -EOPNOTSUPP;
8275
8276         /* Find the HW bridge for PF VSI */
8277         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8278                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8279                         veb = pf->veb[i];
8280         }
8281
8282         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8283
8284         nla_for_each_nested(attr, br_spec, rem) {
8285                 __u16 mode;
8286
8287                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8288                         continue;
8289
8290                 mode = nla_get_u16(attr);
8291                 if ((mode != BRIDGE_MODE_VEPA) &&
8292                     (mode != BRIDGE_MODE_VEB))
8293                         return -EINVAL;
8294
8295                 /* Insert a new HW bridge */
8296                 if (!veb) {
8297                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8298                                              vsi->tc_config.enabled_tc);
8299                         if (veb) {
8300                                 veb->bridge_mode = mode;
8301                                 i40e_config_bridge_mode(veb);
8302                         } else {
8303                                 /* No Bridge HW offload available */
8304                                 return -ENOENT;
8305                         }
8306                         break;
8307                 } else if (mode != veb->bridge_mode) {
8308                         /* Existing HW bridge but different mode needs reset */
8309                         veb->bridge_mode = mode;
8310                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8311                         if (mode == BRIDGE_MODE_VEB)
8312                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8313                         else
8314                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8315                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8316                         break;
8317                 }
8318         }
8319
8320         return 0;
8321 }
8322
8323 /**
8324  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8325  * @skb: skb buff
8326  * @pid: process id
8327  * @seq: RTNL message seq #
8328  * @dev: the netdev being configured
8329  * @filter_mask: unused
8330  * @nlflags: netlink flags passed in
8331  *
8332  * Return the mode in which the hardware bridge is operating in
8333  * i.e VEB or VEPA.
8334  **/
8335 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8336                                    struct net_device *dev,
8337                                    u32 __always_unused filter_mask,
8338                                    int nlflags)
8339 {
8340         struct i40e_netdev_priv *np = netdev_priv(dev);
8341         struct i40e_vsi *vsi = np->vsi;
8342         struct i40e_pf *pf = vsi->back;
8343         struct i40e_veb *veb = NULL;
8344         int i;
8345
8346         /* Only for PF VSI for now */
8347         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8348                 return -EOPNOTSUPP;
8349
8350         /* Find the HW bridge for the PF VSI */
8351         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8352                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8353                         veb = pf->veb[i];
8354         }
8355
8356         if (!veb)
8357                 return 0;
8358
8359         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8360                                        nlflags, 0, 0, filter_mask, NULL);
8361 }
8362
8363 #define I40E_MAX_TUNNEL_HDR_LEN 80
8364 /**
8365  * i40e_features_check - Validate encapsulated packet conforms to limits
8366  * @skb: skb buff
8367  * @netdev: This physical port's netdev
8368  * @features: Offload features that the stack believes apply
8369  **/
8370 static netdev_features_t i40e_features_check(struct sk_buff *skb,
8371                                              struct net_device *dev,
8372                                              netdev_features_t features)
8373 {
8374         if (skb->encapsulation &&
8375             (skb_inner_mac_header(skb) - skb_transport_header(skb) >
8376              I40E_MAX_TUNNEL_HDR_LEN))
8377                 return features & ~(NETIF_F_ALL_CSUM | NETIF_F_GSO_MASK);
8378
8379         return features;
8380 }
8381
8382 static const struct net_device_ops i40e_netdev_ops = {
8383         .ndo_open               = i40e_open,
8384         .ndo_stop               = i40e_close,
8385         .ndo_start_xmit         = i40e_lan_xmit_frame,
8386         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
8387         .ndo_set_rx_mode        = i40e_set_rx_mode,
8388         .ndo_validate_addr      = eth_validate_addr,
8389         .ndo_set_mac_address    = i40e_set_mac,
8390         .ndo_change_mtu         = i40e_change_mtu,
8391         .ndo_do_ioctl           = i40e_ioctl,
8392         .ndo_tx_timeout         = i40e_tx_timeout,
8393         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
8394         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
8395 #ifdef CONFIG_NET_POLL_CONTROLLER
8396         .ndo_poll_controller    = i40e_netpoll,
8397 #endif
8398         .ndo_setup_tc           = i40e_setup_tc,
8399 #ifdef I40E_FCOE
8400         .ndo_fcoe_enable        = i40e_fcoe_enable,
8401         .ndo_fcoe_disable       = i40e_fcoe_disable,
8402 #endif
8403         .ndo_set_features       = i40e_set_features,
8404         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
8405         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
8406         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
8407         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
8408         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
8409         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
8410 #ifdef CONFIG_I40E_VXLAN
8411         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
8412         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
8413 #endif
8414         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
8415         .ndo_fdb_add            = i40e_ndo_fdb_add,
8416         .ndo_features_check     = i40e_features_check,
8417         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
8418         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
8419 };
8420
8421 /**
8422  * i40e_config_netdev - Setup the netdev flags
8423  * @vsi: the VSI being configured
8424  *
8425  * Returns 0 on success, negative value on failure
8426  **/
8427 static int i40e_config_netdev(struct i40e_vsi *vsi)
8428 {
8429         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
8430         struct i40e_pf *pf = vsi->back;
8431         struct i40e_hw *hw = &pf->hw;
8432         struct i40e_netdev_priv *np;
8433         struct net_device *netdev;
8434         u8 mac_addr[ETH_ALEN];
8435         int etherdev_size;
8436
8437         etherdev_size = sizeof(struct i40e_netdev_priv);
8438         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
8439         if (!netdev)
8440                 return -ENOMEM;
8441
8442         vsi->netdev = netdev;
8443         np = netdev_priv(netdev);
8444         np->vsi = vsi;
8445
8446         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
8447                                   NETIF_F_GSO_UDP_TUNNEL |
8448                                   NETIF_F_TSO;
8449
8450         netdev->features = NETIF_F_SG                  |
8451                            NETIF_F_IP_CSUM             |
8452                            NETIF_F_SCTP_CSUM           |
8453                            NETIF_F_HIGHDMA             |
8454                            NETIF_F_GSO_UDP_TUNNEL      |
8455                            NETIF_F_HW_VLAN_CTAG_TX     |
8456                            NETIF_F_HW_VLAN_CTAG_RX     |
8457                            NETIF_F_HW_VLAN_CTAG_FILTER |
8458                            NETIF_F_IPV6_CSUM           |
8459                            NETIF_F_TSO                 |
8460                            NETIF_F_TSO_ECN             |
8461                            NETIF_F_TSO6                |
8462                            NETIF_F_RXCSUM              |
8463                            NETIF_F_RXHASH              |
8464                            0;
8465
8466         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
8467                 netdev->features |= NETIF_F_NTUPLE;
8468
8469         /* copy netdev features into list of user selectable features */
8470         netdev->hw_features |= netdev->features;
8471
8472         if (vsi->type == I40E_VSI_MAIN) {
8473                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
8474                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
8475                 /* The following steps are necessary to prevent reception
8476                  * of tagged packets - some older NVM configurations load a
8477                  * default a MAC-VLAN filter that accepts any tagged packet
8478                  * which must be replaced by a normal filter.
8479                  */
8480                 if (!i40e_rm_default_mac_filter(vsi, mac_addr))
8481                         i40e_add_filter(vsi, mac_addr,
8482                                         I40E_VLAN_ANY, false, true);
8483         } else {
8484                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
8485                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
8486                          pf->vsi[pf->lan_vsi]->netdev->name);
8487                 random_ether_addr(mac_addr);
8488                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
8489         }
8490         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
8491
8492         ether_addr_copy(netdev->dev_addr, mac_addr);
8493         ether_addr_copy(netdev->perm_addr, mac_addr);
8494         /* vlan gets same features (except vlan offload)
8495          * after any tweaks for specific VSI types
8496          */
8497         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
8498                                                      NETIF_F_HW_VLAN_CTAG_RX |
8499                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
8500         netdev->priv_flags |= IFF_UNICAST_FLT;
8501         netdev->priv_flags |= IFF_SUPP_NOFCS;
8502         /* Setup netdev TC information */
8503         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
8504
8505         netdev->netdev_ops = &i40e_netdev_ops;
8506         netdev->watchdog_timeo = 5 * HZ;
8507         i40e_set_ethtool_ops(netdev);
8508 #ifdef I40E_FCOE
8509         i40e_fcoe_config_netdev(netdev, vsi);
8510 #endif
8511
8512         return 0;
8513 }
8514
8515 /**
8516  * i40e_vsi_delete - Delete a VSI from the switch
8517  * @vsi: the VSI being removed
8518  *
8519  * Returns 0 on success, negative value on failure
8520  **/
8521 static void i40e_vsi_delete(struct i40e_vsi *vsi)
8522 {
8523         /* remove default VSI is not allowed */
8524         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
8525                 return;
8526
8527         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
8528 }
8529
8530 /**
8531  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
8532  * @vsi: the VSI being queried
8533  *
8534  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
8535  **/
8536 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
8537 {
8538         struct i40e_veb *veb;
8539         struct i40e_pf *pf = vsi->back;
8540
8541         /* Uplink is not a bridge so default to VEB */
8542         if (vsi->veb_idx == I40E_NO_VEB)
8543                 return 1;
8544
8545         veb = pf->veb[vsi->veb_idx];
8546         /* Uplink is a bridge in VEPA mode */
8547         if (veb && (veb->bridge_mode & BRIDGE_MODE_VEPA))
8548                 return 0;
8549
8550         /* Uplink is a bridge in VEB mode */
8551         return 1;
8552 }
8553
8554 /**
8555  * i40e_add_vsi - Add a VSI to the switch
8556  * @vsi: the VSI being configured
8557  *
8558  * This initializes a VSI context depending on the VSI type to be added and
8559  * passes it down to the add_vsi aq command.
8560  **/
8561 static int i40e_add_vsi(struct i40e_vsi *vsi)
8562 {
8563         int ret = -ENODEV;
8564         struct i40e_mac_filter *f, *ftmp;
8565         struct i40e_pf *pf = vsi->back;
8566         struct i40e_hw *hw = &pf->hw;
8567         struct i40e_vsi_context ctxt;
8568         u8 enabled_tc = 0x1; /* TC0 enabled */
8569         int f_count = 0;
8570
8571         memset(&ctxt, 0, sizeof(ctxt));
8572         switch (vsi->type) {
8573         case I40E_VSI_MAIN:
8574                 /* The PF's main VSI is already setup as part of the
8575                  * device initialization, so we'll not bother with
8576                  * the add_vsi call, but we will retrieve the current
8577                  * VSI context.
8578                  */
8579                 ctxt.seid = pf->main_vsi_seid;
8580                 ctxt.pf_num = pf->hw.pf_id;
8581                 ctxt.vf_num = 0;
8582                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
8583                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8584                 if (ret) {
8585                         dev_info(&pf->pdev->dev,
8586                                  "couldn't get PF vsi config, err %s aq_err %s\n",
8587                                  i40e_stat_str(&pf->hw, ret),
8588                                  i40e_aq_str(&pf->hw,
8589                                              pf->hw.aq.asq_last_status));
8590                         return -ENOENT;
8591                 }
8592                 vsi->info = ctxt.info;
8593                 vsi->info.valid_sections = 0;
8594
8595                 vsi->seid = ctxt.seid;
8596                 vsi->id = ctxt.vsi_number;
8597
8598                 enabled_tc = i40e_pf_get_tc_map(pf);
8599
8600                 /* MFP mode setup queue map and update VSI */
8601                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
8602                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
8603                         memset(&ctxt, 0, sizeof(ctxt));
8604                         ctxt.seid = pf->main_vsi_seid;
8605                         ctxt.pf_num = pf->hw.pf_id;
8606                         ctxt.vf_num = 0;
8607                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
8608                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
8609                         if (ret) {
8610                                 dev_info(&pf->pdev->dev,
8611                                          "update vsi failed, err %s aq_err %s\n",
8612                                          i40e_stat_str(&pf->hw, ret),
8613                                          i40e_aq_str(&pf->hw,
8614                                                     pf->hw.aq.asq_last_status));
8615                                 ret = -ENOENT;
8616                                 goto err;
8617                         }
8618                         /* update the local VSI info queue map */
8619                         i40e_vsi_update_queue_map(vsi, &ctxt);
8620                         vsi->info.valid_sections = 0;
8621                 } else {
8622                         /* Default/Main VSI is only enabled for TC0
8623                          * reconfigure it to enable all TCs that are
8624                          * available on the port in SFP mode.
8625                          * For MFP case the iSCSI PF would use this
8626                          * flow to enable LAN+iSCSI TC.
8627                          */
8628                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
8629                         if (ret) {
8630                                 dev_info(&pf->pdev->dev,
8631                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
8632                                          enabled_tc,
8633                                          i40e_stat_str(&pf->hw, ret),
8634                                          i40e_aq_str(&pf->hw,
8635                                                     pf->hw.aq.asq_last_status));
8636                                 ret = -ENOENT;
8637                         }
8638                 }
8639                 break;
8640
8641         case I40E_VSI_FDIR:
8642                 ctxt.pf_num = hw->pf_id;
8643                 ctxt.vf_num = 0;
8644                 ctxt.uplink_seid = vsi->uplink_seid;
8645                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8646                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8647                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
8648                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
8649                         ctxt.info.valid_sections |=
8650                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8651                         ctxt.info.switch_id =
8652                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8653                 }
8654                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8655                 break;
8656
8657         case I40E_VSI_VMDQ2:
8658                 ctxt.pf_num = hw->pf_id;
8659                 ctxt.vf_num = 0;
8660                 ctxt.uplink_seid = vsi->uplink_seid;
8661                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8662                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
8663
8664                 /* This VSI is connected to VEB so the switch_id
8665                  * should be set to zero by default.
8666                  */
8667                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8668                         ctxt.info.valid_sections |=
8669                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8670                         ctxt.info.switch_id =
8671                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8672                 }
8673
8674                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8675                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8676                 break;
8677
8678         case I40E_VSI_SRIOV:
8679                 ctxt.pf_num = hw->pf_id;
8680                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
8681                 ctxt.uplink_seid = vsi->uplink_seid;
8682                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8683                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
8684
8685                 /* This VSI is connected to VEB so the switch_id
8686                  * should be set to zero by default.
8687                  */
8688                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8689                         ctxt.info.valid_sections |=
8690                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8691                         ctxt.info.switch_id =
8692                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8693                 }
8694
8695                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
8696                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
8697                 if (pf->vf[vsi->vf_id].spoofchk) {
8698                         ctxt.info.valid_sections |=
8699                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
8700                         ctxt.info.sec_flags |=
8701                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
8702                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
8703                 }
8704                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8705                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8706                 break;
8707
8708 #ifdef I40E_FCOE
8709         case I40E_VSI_FCOE:
8710                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
8711                 if (ret) {
8712                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
8713                         return ret;
8714                 }
8715                 break;
8716
8717 #endif /* I40E_FCOE */
8718         default:
8719                 return -ENODEV;
8720         }
8721
8722         if (vsi->type != I40E_VSI_MAIN) {
8723                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
8724                 if (ret) {
8725                         dev_info(&vsi->back->pdev->dev,
8726                                  "add vsi failed, err %s aq_err %s\n",
8727                                  i40e_stat_str(&pf->hw, ret),
8728                                  i40e_aq_str(&pf->hw,
8729                                              pf->hw.aq.asq_last_status));
8730                         ret = -ENOENT;
8731                         goto err;
8732                 }
8733                 vsi->info = ctxt.info;
8734                 vsi->info.valid_sections = 0;
8735                 vsi->seid = ctxt.seid;
8736                 vsi->id = ctxt.vsi_number;
8737         }
8738
8739         /* If macvlan filters already exist, force them to get loaded */
8740         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
8741                 f->changed = true;
8742                 f_count++;
8743
8744                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
8745                         struct i40e_aqc_remove_macvlan_element_data element;
8746
8747                         memset(&element, 0, sizeof(element));
8748                         ether_addr_copy(element.mac_addr, f->macaddr);
8749                         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
8750                         ret = i40e_aq_remove_macvlan(hw, vsi->seid,
8751                                                      &element, 1, NULL);
8752                         if (ret) {
8753                                 /* some older FW has a different default */
8754                                 element.flags |=
8755                                                I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
8756                                 i40e_aq_remove_macvlan(hw, vsi->seid,
8757                                                        &element, 1, NULL);
8758                         }
8759
8760                         i40e_aq_mac_address_write(hw,
8761                                                   I40E_AQC_WRITE_TYPE_LAA_WOL,
8762                                                   f->macaddr, NULL);
8763                 }
8764         }
8765         if (f_count) {
8766                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
8767                 pf->flags |= I40E_FLAG_FILTER_SYNC;
8768         }
8769
8770         /* Update VSI BW information */
8771         ret = i40e_vsi_get_bw_info(vsi);
8772         if (ret) {
8773                 dev_info(&pf->pdev->dev,
8774                          "couldn't get vsi bw info, err %s aq_err %s\n",
8775                          i40e_stat_str(&pf->hw, ret),
8776                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
8777                 /* VSI is already added so not tearing that up */
8778                 ret = 0;
8779         }
8780
8781 err:
8782         return ret;
8783 }
8784
8785 /**
8786  * i40e_vsi_release - Delete a VSI and free its resources
8787  * @vsi: the VSI being removed
8788  *
8789  * Returns 0 on success or < 0 on error
8790  **/
8791 int i40e_vsi_release(struct i40e_vsi *vsi)
8792 {
8793         struct i40e_mac_filter *f, *ftmp;
8794         struct i40e_veb *veb = NULL;
8795         struct i40e_pf *pf;
8796         u16 uplink_seid;
8797         int i, n;
8798
8799         pf = vsi->back;
8800
8801         /* release of a VEB-owner or last VSI is not allowed */
8802         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
8803                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
8804                          vsi->seid, vsi->uplink_seid);
8805                 return -ENODEV;
8806         }
8807         if (vsi == pf->vsi[pf->lan_vsi] &&
8808             !test_bit(__I40E_DOWN, &pf->state)) {
8809                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
8810                 return -ENODEV;
8811         }
8812
8813         uplink_seid = vsi->uplink_seid;
8814         if (vsi->type != I40E_VSI_SRIOV) {
8815                 if (vsi->netdev_registered) {
8816                         vsi->netdev_registered = false;
8817                         if (vsi->netdev) {
8818                                 /* results in a call to i40e_close() */
8819                                 unregister_netdev(vsi->netdev);
8820                         }
8821                 } else {
8822                         i40e_vsi_close(vsi);
8823                 }
8824                 i40e_vsi_disable_irq(vsi);
8825         }
8826
8827         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
8828                 i40e_del_filter(vsi, f->macaddr, f->vlan,
8829                                 f->is_vf, f->is_netdev);
8830         i40e_sync_vsi_filters(vsi, false);
8831
8832         i40e_vsi_delete(vsi);
8833         i40e_vsi_free_q_vectors(vsi);
8834         if (vsi->netdev) {
8835                 free_netdev(vsi->netdev);
8836                 vsi->netdev = NULL;
8837         }
8838         i40e_vsi_clear_rings(vsi);
8839         i40e_vsi_clear(vsi);
8840
8841         /* If this was the last thing on the VEB, except for the
8842          * controlling VSI, remove the VEB, which puts the controlling
8843          * VSI onto the next level down in the switch.
8844          *
8845          * Well, okay, there's one more exception here: don't remove
8846          * the orphan VEBs yet.  We'll wait for an explicit remove request
8847          * from up the network stack.
8848          */
8849         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
8850                 if (pf->vsi[i] &&
8851                     pf->vsi[i]->uplink_seid == uplink_seid &&
8852                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8853                         n++;      /* count the VSIs */
8854                 }
8855         }
8856         for (i = 0; i < I40E_MAX_VEB; i++) {
8857                 if (!pf->veb[i])
8858                         continue;
8859                 if (pf->veb[i]->uplink_seid == uplink_seid)
8860                         n++;     /* count the VEBs */
8861                 if (pf->veb[i]->seid == uplink_seid)
8862                         veb = pf->veb[i];
8863         }
8864         if (n == 0 && veb && veb->uplink_seid != 0)
8865                 i40e_veb_release(veb);
8866
8867         return 0;
8868 }
8869
8870 /**
8871  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
8872  * @vsi: ptr to the VSI
8873  *
8874  * This should only be called after i40e_vsi_mem_alloc() which allocates the
8875  * corresponding SW VSI structure and initializes num_queue_pairs for the
8876  * newly allocated VSI.
8877  *
8878  * Returns 0 on success or negative on failure
8879  **/
8880 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
8881 {
8882         int ret = -ENOENT;
8883         struct i40e_pf *pf = vsi->back;
8884
8885         if (vsi->q_vectors[0]) {
8886                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
8887                          vsi->seid);
8888                 return -EEXIST;
8889         }
8890
8891         if (vsi->base_vector) {
8892                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
8893                          vsi->seid, vsi->base_vector);
8894                 return -EEXIST;
8895         }
8896
8897         ret = i40e_vsi_alloc_q_vectors(vsi);
8898         if (ret) {
8899                 dev_info(&pf->pdev->dev,
8900                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
8901                          vsi->num_q_vectors, vsi->seid, ret);
8902                 vsi->num_q_vectors = 0;
8903                 goto vector_setup_out;
8904         }
8905
8906         /* In Legacy mode, we do not have to get any other vector since we
8907          * piggyback on the misc/ICR0 for queue interrupts.
8908         */
8909         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
8910                 return ret;
8911         if (vsi->num_q_vectors)
8912                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
8913                                                  vsi->num_q_vectors, vsi->idx);
8914         if (vsi->base_vector < 0) {
8915                 dev_info(&pf->pdev->dev,
8916                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
8917                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
8918                 i40e_vsi_free_q_vectors(vsi);
8919                 ret = -ENOENT;
8920                 goto vector_setup_out;
8921         }
8922
8923 vector_setup_out:
8924         return ret;
8925 }
8926
8927 /**
8928  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
8929  * @vsi: pointer to the vsi.
8930  *
8931  * This re-allocates a vsi's queue resources.
8932  *
8933  * Returns pointer to the successfully allocated and configured VSI sw struct
8934  * on success, otherwise returns NULL on failure.
8935  **/
8936 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
8937 {
8938         struct i40e_pf *pf = vsi->back;
8939         u8 enabled_tc;
8940         int ret;
8941
8942         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
8943         i40e_vsi_clear_rings(vsi);
8944
8945         i40e_vsi_free_arrays(vsi, false);
8946         i40e_set_num_rings_in_vsi(vsi);
8947         ret = i40e_vsi_alloc_arrays(vsi, false);
8948         if (ret)
8949                 goto err_vsi;
8950
8951         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
8952         if (ret < 0) {
8953                 dev_info(&pf->pdev->dev,
8954                          "failed to get tracking for %d queues for VSI %d err %d\n",
8955                          vsi->alloc_queue_pairs, vsi->seid, ret);
8956                 goto err_vsi;
8957         }
8958         vsi->base_queue = ret;
8959
8960         /* Update the FW view of the VSI. Force a reset of TC and queue
8961          * layout configurations.
8962          */
8963         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8964         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8965         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8966         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8967
8968         /* assign it some queues */
8969         ret = i40e_alloc_rings(vsi);
8970         if (ret)
8971                 goto err_rings;
8972
8973         /* map all of the rings to the q_vectors */
8974         i40e_vsi_map_rings_to_vectors(vsi);
8975         return vsi;
8976
8977 err_rings:
8978         i40e_vsi_free_q_vectors(vsi);
8979         if (vsi->netdev_registered) {
8980                 vsi->netdev_registered = false;
8981                 unregister_netdev(vsi->netdev);
8982                 free_netdev(vsi->netdev);
8983                 vsi->netdev = NULL;
8984         }
8985         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8986 err_vsi:
8987         i40e_vsi_clear(vsi);
8988         return NULL;
8989 }
8990
8991 /**
8992  * i40e_vsi_setup - Set up a VSI by a given type
8993  * @pf: board private structure
8994  * @type: VSI type
8995  * @uplink_seid: the switch element to link to
8996  * @param1: usage depends upon VSI type. For VF types, indicates VF id
8997  *
8998  * This allocates the sw VSI structure and its queue resources, then add a VSI
8999  * to the identified VEB.
9000  *
9001  * Returns pointer to the successfully allocated and configure VSI sw struct on
9002  * success, otherwise returns NULL on failure.
9003  **/
9004 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9005                                 u16 uplink_seid, u32 param1)
9006 {
9007         struct i40e_vsi *vsi = NULL;
9008         struct i40e_veb *veb = NULL;
9009         int ret, i;
9010         int v_idx;
9011
9012         /* The requested uplink_seid must be either
9013          *     - the PF's port seid
9014          *              no VEB is needed because this is the PF
9015          *              or this is a Flow Director special case VSI
9016          *     - seid of an existing VEB
9017          *     - seid of a VSI that owns an existing VEB
9018          *     - seid of a VSI that doesn't own a VEB
9019          *              a new VEB is created and the VSI becomes the owner
9020          *     - seid of the PF VSI, which is what creates the first VEB
9021          *              this is a special case of the previous
9022          *
9023          * Find which uplink_seid we were given and create a new VEB if needed
9024          */
9025         for (i = 0; i < I40E_MAX_VEB; i++) {
9026                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9027                         veb = pf->veb[i];
9028                         break;
9029                 }
9030         }
9031
9032         if (!veb && uplink_seid != pf->mac_seid) {
9033
9034                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9035                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9036                                 vsi = pf->vsi[i];
9037                                 break;
9038                         }
9039                 }
9040                 if (!vsi) {
9041                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9042                                  uplink_seid);
9043                         return NULL;
9044                 }
9045
9046                 if (vsi->uplink_seid == pf->mac_seid)
9047                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9048                                              vsi->tc_config.enabled_tc);
9049                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9050                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9051                                              vsi->tc_config.enabled_tc);
9052                 if (veb) {
9053                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9054                                 dev_info(&vsi->back->pdev->dev,
9055                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9056                                 return NULL;
9057                         }
9058                         /* We come up by default in VEPA mode if SRIOV is not
9059                          * already enabled, in which case we can't force VEPA
9060                          * mode.
9061                          */
9062                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9063                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9064                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9065                         }
9066                         i40e_config_bridge_mode(veb);
9067                 }
9068                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9069                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9070                                 veb = pf->veb[i];
9071                 }
9072                 if (!veb) {
9073                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9074                         return NULL;
9075                 }
9076
9077                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9078                 uplink_seid = veb->seid;
9079         }
9080
9081         /* get vsi sw struct */
9082         v_idx = i40e_vsi_mem_alloc(pf, type);
9083         if (v_idx < 0)
9084                 goto err_alloc;
9085         vsi = pf->vsi[v_idx];
9086         if (!vsi)
9087                 goto err_alloc;
9088         vsi->type = type;
9089         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9090
9091         if (type == I40E_VSI_MAIN)
9092                 pf->lan_vsi = v_idx;
9093         else if (type == I40E_VSI_SRIOV)
9094                 vsi->vf_id = param1;
9095         /* assign it some queues */
9096         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9097                                 vsi->idx);
9098         if (ret < 0) {
9099                 dev_info(&pf->pdev->dev,
9100                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9101                          vsi->alloc_queue_pairs, vsi->seid, ret);
9102                 goto err_vsi;
9103         }
9104         vsi->base_queue = ret;
9105
9106         /* get a VSI from the hardware */
9107         vsi->uplink_seid = uplink_seid;
9108         ret = i40e_add_vsi(vsi);
9109         if (ret)
9110                 goto err_vsi;
9111
9112         switch (vsi->type) {
9113         /* setup the netdev if needed */
9114         case I40E_VSI_MAIN:
9115         case I40E_VSI_VMDQ2:
9116         case I40E_VSI_FCOE:
9117                 ret = i40e_config_netdev(vsi);
9118                 if (ret)
9119                         goto err_netdev;
9120                 ret = register_netdev(vsi->netdev);
9121                 if (ret)
9122                         goto err_netdev;
9123                 vsi->netdev_registered = true;
9124                 netif_carrier_off(vsi->netdev);
9125 #ifdef CONFIG_I40E_DCB
9126                 /* Setup DCB netlink interface */
9127                 i40e_dcbnl_setup(vsi);
9128 #endif /* CONFIG_I40E_DCB */
9129                 /* fall through */
9130
9131         case I40E_VSI_FDIR:
9132                 /* set up vectors and rings if needed */
9133                 ret = i40e_vsi_setup_vectors(vsi);
9134                 if (ret)
9135                         goto err_msix;
9136
9137                 ret = i40e_alloc_rings(vsi);
9138                 if (ret)
9139                         goto err_rings;
9140
9141                 /* map all of the rings to the q_vectors */
9142                 i40e_vsi_map_rings_to_vectors(vsi);
9143
9144                 i40e_vsi_reset_stats(vsi);
9145                 break;
9146
9147         default:
9148                 /* no netdev or rings for the other VSI types */
9149                 break;
9150         }
9151
9152         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9153             (vsi->type == I40E_VSI_VMDQ2)) {
9154                 ret = i40e_vsi_config_rss(vsi);
9155         }
9156         return vsi;
9157
9158 err_rings:
9159         i40e_vsi_free_q_vectors(vsi);
9160 err_msix:
9161         if (vsi->netdev_registered) {
9162                 vsi->netdev_registered = false;
9163                 unregister_netdev(vsi->netdev);
9164                 free_netdev(vsi->netdev);
9165                 vsi->netdev = NULL;
9166         }
9167 err_netdev:
9168         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9169 err_vsi:
9170         i40e_vsi_clear(vsi);
9171 err_alloc:
9172         return NULL;
9173 }
9174
9175 /**
9176  * i40e_veb_get_bw_info - Query VEB BW information
9177  * @veb: the veb to query
9178  *
9179  * Query the Tx scheduler BW configuration data for given VEB
9180  **/
9181 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9182 {
9183         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9184         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9185         struct i40e_pf *pf = veb->pf;
9186         struct i40e_hw *hw = &pf->hw;
9187         u32 tc_bw_max;
9188         int ret = 0;
9189         int i;
9190
9191         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9192                                                   &bw_data, NULL);
9193         if (ret) {
9194                 dev_info(&pf->pdev->dev,
9195                          "query veb bw config failed, err %s aq_err %s\n",
9196                          i40e_stat_str(&pf->hw, ret),
9197                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9198                 goto out;
9199         }
9200
9201         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9202                                                    &ets_data, NULL);
9203         if (ret) {
9204                 dev_info(&pf->pdev->dev,
9205                          "query veb bw ets config failed, err %s aq_err %s\n",
9206                          i40e_stat_str(&pf->hw, ret),
9207                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9208                 goto out;
9209         }
9210
9211         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9212         veb->bw_max_quanta = ets_data.tc_bw_max;
9213         veb->is_abs_credits = bw_data.absolute_credits_enable;
9214         veb->enabled_tc = ets_data.tc_valid_bits;
9215         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9216                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9217         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9218                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9219                 veb->bw_tc_limit_credits[i] =
9220                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9221                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9222         }
9223
9224 out:
9225         return ret;
9226 }
9227
9228 /**
9229  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9230  * @pf: board private structure
9231  *
9232  * On error: returns error code (negative)
9233  * On success: returns vsi index in PF (positive)
9234  **/
9235 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9236 {
9237         int ret = -ENOENT;
9238         struct i40e_veb *veb;
9239         int i;
9240
9241         /* Need to protect the allocation of switch elements at the PF level */
9242         mutex_lock(&pf->switch_mutex);
9243
9244         /* VEB list may be fragmented if VEB creation/destruction has
9245          * been happening.  We can afford to do a quick scan to look
9246          * for any free slots in the list.
9247          *
9248          * find next empty veb slot, looping back around if necessary
9249          */
9250         i = 0;
9251         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9252                 i++;
9253         if (i >= I40E_MAX_VEB) {
9254                 ret = -ENOMEM;
9255                 goto err_alloc_veb;  /* out of VEB slots! */
9256         }
9257
9258         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9259         if (!veb) {
9260                 ret = -ENOMEM;
9261                 goto err_alloc_veb;
9262         }
9263         veb->pf = pf;
9264         veb->idx = i;
9265         veb->enabled_tc = 1;
9266
9267         pf->veb[i] = veb;
9268         ret = i;
9269 err_alloc_veb:
9270         mutex_unlock(&pf->switch_mutex);
9271         return ret;
9272 }
9273
9274 /**
9275  * i40e_switch_branch_release - Delete a branch of the switch tree
9276  * @branch: where to start deleting
9277  *
9278  * This uses recursion to find the tips of the branch to be
9279  * removed, deleting until we get back to and can delete this VEB.
9280  **/
9281 static void i40e_switch_branch_release(struct i40e_veb *branch)
9282 {
9283         struct i40e_pf *pf = branch->pf;
9284         u16 branch_seid = branch->seid;
9285         u16 veb_idx = branch->idx;
9286         int i;
9287
9288         /* release any VEBs on this VEB - RECURSION */
9289         for (i = 0; i < I40E_MAX_VEB; i++) {
9290                 if (!pf->veb[i])
9291                         continue;
9292                 if (pf->veb[i]->uplink_seid == branch->seid)
9293                         i40e_switch_branch_release(pf->veb[i]);
9294         }
9295
9296         /* Release the VSIs on this VEB, but not the owner VSI.
9297          *
9298          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
9299          *       the VEB itself, so don't use (*branch) after this loop.
9300          */
9301         for (i = 0; i < pf->num_alloc_vsi; i++) {
9302                 if (!pf->vsi[i])
9303                         continue;
9304                 if (pf->vsi[i]->uplink_seid == branch_seid &&
9305                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9306                         i40e_vsi_release(pf->vsi[i]);
9307                 }
9308         }
9309
9310         /* There's one corner case where the VEB might not have been
9311          * removed, so double check it here and remove it if needed.
9312          * This case happens if the veb was created from the debugfs
9313          * commands and no VSIs were added to it.
9314          */
9315         if (pf->veb[veb_idx])
9316                 i40e_veb_release(pf->veb[veb_idx]);
9317 }
9318
9319 /**
9320  * i40e_veb_clear - remove veb struct
9321  * @veb: the veb to remove
9322  **/
9323 static void i40e_veb_clear(struct i40e_veb *veb)
9324 {
9325         if (!veb)
9326                 return;
9327
9328         if (veb->pf) {
9329                 struct i40e_pf *pf = veb->pf;
9330
9331                 mutex_lock(&pf->switch_mutex);
9332                 if (pf->veb[veb->idx] == veb)
9333                         pf->veb[veb->idx] = NULL;
9334                 mutex_unlock(&pf->switch_mutex);
9335         }
9336
9337         kfree(veb);
9338 }
9339
9340 /**
9341  * i40e_veb_release - Delete a VEB and free its resources
9342  * @veb: the VEB being removed
9343  **/
9344 void i40e_veb_release(struct i40e_veb *veb)
9345 {
9346         struct i40e_vsi *vsi = NULL;
9347         struct i40e_pf *pf;
9348         int i, n = 0;
9349
9350         pf = veb->pf;
9351
9352         /* find the remaining VSI and check for extras */
9353         for (i = 0; i < pf->num_alloc_vsi; i++) {
9354                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
9355                         n++;
9356                         vsi = pf->vsi[i];
9357                 }
9358         }
9359         if (n != 1) {
9360                 dev_info(&pf->pdev->dev,
9361                          "can't remove VEB %d with %d VSIs left\n",
9362                          veb->seid, n);
9363                 return;
9364         }
9365
9366         /* move the remaining VSI to uplink veb */
9367         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
9368         if (veb->uplink_seid) {
9369                 vsi->uplink_seid = veb->uplink_seid;
9370                 if (veb->uplink_seid == pf->mac_seid)
9371                         vsi->veb_idx = I40E_NO_VEB;
9372                 else
9373                         vsi->veb_idx = veb->veb_idx;
9374         } else {
9375                 /* floating VEB */
9376                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
9377                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
9378         }
9379
9380         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9381         i40e_veb_clear(veb);
9382 }
9383
9384 /**
9385  * i40e_add_veb - create the VEB in the switch
9386  * @veb: the VEB to be instantiated
9387  * @vsi: the controlling VSI
9388  **/
9389 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
9390 {
9391         struct i40e_pf *pf = veb->pf;
9392         bool is_default = veb->pf->cur_promisc;
9393         bool is_cloud = false;
9394         int ret;
9395
9396         /* get a VEB from the hardware */
9397         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
9398                               veb->enabled_tc, is_default,
9399                               is_cloud, &veb->seid, NULL);
9400         if (ret) {
9401                 dev_info(&pf->pdev->dev,
9402                          "couldn't add VEB, err %s aq_err %s\n",
9403                          i40e_stat_str(&pf->hw, ret),
9404                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9405                 return -EPERM;
9406         }
9407
9408         /* get statistics counter */
9409         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
9410                                          &veb->stats_idx, NULL, NULL, NULL);
9411         if (ret) {
9412                 dev_info(&pf->pdev->dev,
9413                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
9414                          i40e_stat_str(&pf->hw, ret),
9415                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9416                 return -EPERM;
9417         }
9418         ret = i40e_veb_get_bw_info(veb);
9419         if (ret) {
9420                 dev_info(&pf->pdev->dev,
9421                          "couldn't get VEB bw info, err %s aq_err %s\n",
9422                          i40e_stat_str(&pf->hw, ret),
9423                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9424                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9425                 return -ENOENT;
9426         }
9427
9428         vsi->uplink_seid = veb->seid;
9429         vsi->veb_idx = veb->idx;
9430         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9431
9432         return 0;
9433 }
9434
9435 /**
9436  * i40e_veb_setup - Set up a VEB
9437  * @pf: board private structure
9438  * @flags: VEB setup flags
9439  * @uplink_seid: the switch element to link to
9440  * @vsi_seid: the initial VSI seid
9441  * @enabled_tc: Enabled TC bit-map
9442  *
9443  * This allocates the sw VEB structure and links it into the switch
9444  * It is possible and legal for this to be a duplicate of an already
9445  * existing VEB.  It is also possible for both uplink and vsi seids
9446  * to be zero, in order to create a floating VEB.
9447  *
9448  * Returns pointer to the successfully allocated VEB sw struct on
9449  * success, otherwise returns NULL on failure.
9450  **/
9451 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
9452                                 u16 uplink_seid, u16 vsi_seid,
9453                                 u8 enabled_tc)
9454 {
9455         struct i40e_veb *veb, *uplink_veb = NULL;
9456         int vsi_idx, veb_idx;
9457         int ret;
9458
9459         /* if one seid is 0, the other must be 0 to create a floating relay */
9460         if ((uplink_seid == 0 || vsi_seid == 0) &&
9461             (uplink_seid + vsi_seid != 0)) {
9462                 dev_info(&pf->pdev->dev,
9463                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
9464                          uplink_seid, vsi_seid);
9465                 return NULL;
9466         }
9467
9468         /* make sure there is such a vsi and uplink */
9469         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
9470                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
9471                         break;
9472         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
9473                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
9474                          vsi_seid);
9475                 return NULL;
9476         }
9477
9478         if (uplink_seid && uplink_seid != pf->mac_seid) {
9479                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
9480                         if (pf->veb[veb_idx] &&
9481                             pf->veb[veb_idx]->seid == uplink_seid) {
9482                                 uplink_veb = pf->veb[veb_idx];
9483                                 break;
9484                         }
9485                 }
9486                 if (!uplink_veb) {
9487                         dev_info(&pf->pdev->dev,
9488                                  "uplink seid %d not found\n", uplink_seid);
9489                         return NULL;
9490                 }
9491         }
9492
9493         /* get veb sw struct */
9494         veb_idx = i40e_veb_mem_alloc(pf);
9495         if (veb_idx < 0)
9496                 goto err_alloc;
9497         veb = pf->veb[veb_idx];
9498         veb->flags = flags;
9499         veb->uplink_seid = uplink_seid;
9500         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
9501         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
9502
9503         /* create the VEB in the switch */
9504         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
9505         if (ret)
9506                 goto err_veb;
9507         if (vsi_idx == pf->lan_vsi)
9508                 pf->lan_veb = veb->idx;
9509
9510         return veb;
9511
9512 err_veb:
9513         i40e_veb_clear(veb);
9514 err_alloc:
9515         return NULL;
9516 }
9517
9518 /**
9519  * i40e_setup_pf_switch_element - set PF vars based on switch type
9520  * @pf: board private structure
9521  * @ele: element we are building info from
9522  * @num_reported: total number of elements
9523  * @printconfig: should we print the contents
9524  *
9525  * helper function to assist in extracting a few useful SEID values.
9526  **/
9527 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
9528                                 struct i40e_aqc_switch_config_element_resp *ele,
9529                                 u16 num_reported, bool printconfig)
9530 {
9531         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
9532         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
9533         u8 element_type = ele->element_type;
9534         u16 seid = le16_to_cpu(ele->seid);
9535
9536         if (printconfig)
9537                 dev_info(&pf->pdev->dev,
9538                          "type=%d seid=%d uplink=%d downlink=%d\n",
9539                          element_type, seid, uplink_seid, downlink_seid);
9540
9541         switch (element_type) {
9542         case I40E_SWITCH_ELEMENT_TYPE_MAC:
9543                 pf->mac_seid = seid;
9544                 break;
9545         case I40E_SWITCH_ELEMENT_TYPE_VEB:
9546                 /* Main VEB? */
9547                 if (uplink_seid != pf->mac_seid)
9548                         break;
9549                 if (pf->lan_veb == I40E_NO_VEB) {
9550                         int v;
9551
9552                         /* find existing or else empty VEB */
9553                         for (v = 0; v < I40E_MAX_VEB; v++) {
9554                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
9555                                         pf->lan_veb = v;
9556                                         break;
9557                                 }
9558                         }
9559                         if (pf->lan_veb == I40E_NO_VEB) {
9560                                 v = i40e_veb_mem_alloc(pf);
9561                                 if (v < 0)
9562                                         break;
9563                                 pf->lan_veb = v;
9564                         }
9565                 }
9566
9567                 pf->veb[pf->lan_veb]->seid = seid;
9568                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
9569                 pf->veb[pf->lan_veb]->pf = pf;
9570                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
9571                 break;
9572         case I40E_SWITCH_ELEMENT_TYPE_VSI:
9573                 if (num_reported != 1)
9574                         break;
9575                 /* This is immediately after a reset so we can assume this is
9576                  * the PF's VSI
9577                  */
9578                 pf->mac_seid = uplink_seid;
9579                 pf->pf_seid = downlink_seid;
9580                 pf->main_vsi_seid = seid;
9581                 if (printconfig)
9582                         dev_info(&pf->pdev->dev,
9583                                  "pf_seid=%d main_vsi_seid=%d\n",
9584                                  pf->pf_seid, pf->main_vsi_seid);
9585                 break;
9586         case I40E_SWITCH_ELEMENT_TYPE_PF:
9587         case I40E_SWITCH_ELEMENT_TYPE_VF:
9588         case I40E_SWITCH_ELEMENT_TYPE_EMP:
9589         case I40E_SWITCH_ELEMENT_TYPE_BMC:
9590         case I40E_SWITCH_ELEMENT_TYPE_PE:
9591         case I40E_SWITCH_ELEMENT_TYPE_PA:
9592                 /* ignore these for now */
9593                 break;
9594         default:
9595                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
9596                          element_type, seid);
9597                 break;
9598         }
9599 }
9600
9601 /**
9602  * i40e_fetch_switch_configuration - Get switch config from firmware
9603  * @pf: board private structure
9604  * @printconfig: should we print the contents
9605  *
9606  * Get the current switch configuration from the device and
9607  * extract a few useful SEID values.
9608  **/
9609 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
9610 {
9611         struct i40e_aqc_get_switch_config_resp *sw_config;
9612         u16 next_seid = 0;
9613         int ret = 0;
9614         u8 *aq_buf;
9615         int i;
9616
9617         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
9618         if (!aq_buf)
9619                 return -ENOMEM;
9620
9621         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
9622         do {
9623                 u16 num_reported, num_total;
9624
9625                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
9626                                                 I40E_AQ_LARGE_BUF,
9627                                                 &next_seid, NULL);
9628                 if (ret) {
9629                         dev_info(&pf->pdev->dev,
9630                                  "get switch config failed err %s aq_err %s\n",
9631                                  i40e_stat_str(&pf->hw, ret),
9632                                  i40e_aq_str(&pf->hw,
9633                                              pf->hw.aq.asq_last_status));
9634                         kfree(aq_buf);
9635                         return -ENOENT;
9636                 }
9637
9638                 num_reported = le16_to_cpu(sw_config->header.num_reported);
9639                 num_total = le16_to_cpu(sw_config->header.num_total);
9640
9641                 if (printconfig)
9642                         dev_info(&pf->pdev->dev,
9643                                  "header: %d reported %d total\n",
9644                                  num_reported, num_total);
9645
9646                 for (i = 0; i < num_reported; i++) {
9647                         struct i40e_aqc_switch_config_element_resp *ele =
9648                                 &sw_config->element[i];
9649
9650                         i40e_setup_pf_switch_element(pf, ele, num_reported,
9651                                                      printconfig);
9652                 }
9653         } while (next_seid != 0);
9654
9655         kfree(aq_buf);
9656         return ret;
9657 }
9658
9659 /**
9660  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
9661  * @pf: board private structure
9662  * @reinit: if the Main VSI needs to re-initialized.
9663  *
9664  * Returns 0 on success, negative value on failure
9665  **/
9666 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
9667 {
9668         int ret;
9669
9670         /* find out what's out there already */
9671         ret = i40e_fetch_switch_configuration(pf, false);
9672         if (ret) {
9673                 dev_info(&pf->pdev->dev,
9674                          "couldn't fetch switch config, err %s aq_err %s\n",
9675                          i40e_stat_str(&pf->hw, ret),
9676                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9677                 return ret;
9678         }
9679         i40e_pf_reset_stats(pf);
9680
9681         /* first time setup */
9682         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
9683                 struct i40e_vsi *vsi = NULL;
9684                 u16 uplink_seid;
9685
9686                 /* Set up the PF VSI associated with the PF's main VSI
9687                  * that is already in the HW switch
9688                  */
9689                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
9690                         uplink_seid = pf->veb[pf->lan_veb]->seid;
9691                 else
9692                         uplink_seid = pf->mac_seid;
9693                 if (pf->lan_vsi == I40E_NO_VSI)
9694                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
9695                 else if (reinit)
9696                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
9697                 if (!vsi) {
9698                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
9699                         i40e_fdir_teardown(pf);
9700                         return -EAGAIN;
9701                 }
9702         } else {
9703                 /* force a reset of TC and queue layout configurations */
9704                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9705
9706                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9707                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9708                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9709         }
9710         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
9711
9712         i40e_fdir_sb_setup(pf);
9713
9714         /* Setup static PF queue filter control settings */
9715         ret = i40e_setup_pf_filter_control(pf);
9716         if (ret) {
9717                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
9718                          ret);
9719                 /* Failure here should not stop continuing other steps */
9720         }
9721
9722         /* enable RSS in the HW, even for only one queue, as the stack can use
9723          * the hash
9724          */
9725         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
9726                 i40e_config_rss(pf);
9727
9728         /* fill in link information and enable LSE reporting */
9729         i40e_update_link_info(&pf->hw);
9730         i40e_link_event(pf);
9731
9732         /* Initialize user-specific link properties */
9733         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
9734                                   I40E_AQ_AN_COMPLETED) ? true : false);
9735
9736         i40e_ptp_init(pf);
9737
9738         return ret;
9739 }
9740
9741 /**
9742  * i40e_determine_queue_usage - Work out queue distribution
9743  * @pf: board private structure
9744  **/
9745 static void i40e_determine_queue_usage(struct i40e_pf *pf)
9746 {
9747         int queues_left;
9748
9749         pf->num_lan_qps = 0;
9750 #ifdef I40E_FCOE
9751         pf->num_fcoe_qps = 0;
9752 #endif
9753
9754         /* Find the max queues to be put into basic use.  We'll always be
9755          * using TC0, whether or not DCB is running, and TC0 will get the
9756          * big RSS set.
9757          */
9758         queues_left = pf->hw.func_caps.num_tx_qp;
9759
9760         if ((queues_left == 1) ||
9761             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
9762                 /* one qp for PF, no queues for anything else */
9763                 queues_left = 0;
9764                 pf->rss_size = pf->num_lan_qps = 1;
9765
9766                 /* make sure all the fancies are disabled */
9767                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9768 #ifdef I40E_FCOE
9769                                I40E_FLAG_FCOE_ENABLED   |
9770 #endif
9771                                I40E_FLAG_FD_SB_ENABLED  |
9772                                I40E_FLAG_FD_ATR_ENABLED |
9773                                I40E_FLAG_DCB_CAPABLE    |
9774                                I40E_FLAG_SRIOV_ENABLED  |
9775                                I40E_FLAG_VMDQ_ENABLED);
9776         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
9777                                   I40E_FLAG_FD_SB_ENABLED |
9778                                   I40E_FLAG_FD_ATR_ENABLED |
9779                                   I40E_FLAG_DCB_CAPABLE))) {
9780                 /* one qp for PF */
9781                 pf->rss_size = pf->num_lan_qps = 1;
9782                 queues_left -= pf->num_lan_qps;
9783
9784                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9785 #ifdef I40E_FCOE
9786                                I40E_FLAG_FCOE_ENABLED   |
9787 #endif
9788                                I40E_FLAG_FD_SB_ENABLED  |
9789                                I40E_FLAG_FD_ATR_ENABLED |
9790                                I40E_FLAG_DCB_ENABLED    |
9791                                I40E_FLAG_VMDQ_ENABLED);
9792         } else {
9793                 /* Not enough queues for all TCs */
9794                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
9795                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
9796                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9797                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
9798                 }
9799                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
9800                                         num_online_cpus());
9801                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
9802                                         pf->hw.func_caps.num_tx_qp);
9803
9804                 queues_left -= pf->num_lan_qps;
9805         }
9806
9807 #ifdef I40E_FCOE
9808         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
9809                 if (I40E_DEFAULT_FCOE <= queues_left) {
9810                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
9811                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
9812                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
9813                 } else {
9814                         pf->num_fcoe_qps = 0;
9815                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
9816                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
9817                 }
9818
9819                 queues_left -= pf->num_fcoe_qps;
9820         }
9821
9822 #endif
9823         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9824                 if (queues_left > 1) {
9825                         queues_left -= 1; /* save 1 queue for FD */
9826                 } else {
9827                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
9828                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
9829                 }
9830         }
9831
9832         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9833             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
9834                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
9835                                         (queues_left / pf->num_vf_qps));
9836                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
9837         }
9838
9839         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
9840             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
9841                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
9842                                           (queues_left / pf->num_vmdq_qps));
9843                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
9844         }
9845
9846         pf->queues_left = queues_left;
9847         dev_dbg(&pf->pdev->dev,
9848                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
9849                 pf->hw.func_caps.num_tx_qp,
9850                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
9851                 pf->num_lan_qps, pf->rss_size, pf->num_req_vfs, pf->num_vf_qps,
9852                 pf->num_vmdq_vsis, pf->num_vmdq_qps, queues_left);
9853 #ifdef I40E_FCOE
9854         dev_dbg(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
9855 #endif
9856 }
9857
9858 /**
9859  * i40e_setup_pf_filter_control - Setup PF static filter control
9860  * @pf: PF to be setup
9861  *
9862  * i40e_setup_pf_filter_control sets up a PF's initial filter control
9863  * settings. If PE/FCoE are enabled then it will also set the per PF
9864  * based filter sizes required for them. It also enables Flow director,
9865  * ethertype and macvlan type filter settings for the pf.
9866  *
9867  * Returns 0 on success, negative on failure
9868  **/
9869 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
9870 {
9871         struct i40e_filter_control_settings *settings = &pf->filter_settings;
9872
9873         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
9874
9875         /* Flow Director is enabled */
9876         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
9877                 settings->enable_fdir = true;
9878
9879         /* Ethtype and MACVLAN filters enabled for PF */
9880         settings->enable_ethtype = true;
9881         settings->enable_macvlan = true;
9882
9883         if (i40e_set_filter_control(&pf->hw, settings))
9884                 return -ENOENT;
9885
9886         return 0;
9887 }
9888
9889 #define INFO_STRING_LEN 255
9890 static void i40e_print_features(struct i40e_pf *pf)
9891 {
9892         struct i40e_hw *hw = &pf->hw;
9893         char *buf, *string;
9894
9895         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
9896         if (!string) {
9897                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
9898                 return;
9899         }
9900
9901         buf = string;
9902
9903         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
9904 #ifdef CONFIG_PCI_IOV
9905         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
9906 #endif
9907         buf += sprintf(buf, "VSIs: %d QP: %d RX: %s ",
9908                        pf->hw.func_caps.num_vsis,
9909                        pf->vsi[pf->lan_vsi]->num_queue_pairs,
9910                        pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
9911
9912         if (pf->flags & I40E_FLAG_RSS_ENABLED)
9913                 buf += sprintf(buf, "RSS ");
9914         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
9915                 buf += sprintf(buf, "FD_ATR ");
9916         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9917                 buf += sprintf(buf, "FD_SB ");
9918                 buf += sprintf(buf, "NTUPLE ");
9919         }
9920         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
9921                 buf += sprintf(buf, "DCB ");
9922 #if IS_ENABLED(CONFIG_VXLAN)
9923         buf += sprintf(buf, "VxLAN ");
9924 #endif
9925         if (pf->flags & I40E_FLAG_PTP)
9926                 buf += sprintf(buf, "PTP ");
9927 #ifdef I40E_FCOE
9928         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
9929                 buf += sprintf(buf, "FCOE ");
9930 #endif
9931         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
9932                 buf += sprintf(buf, "VEB ");
9933         else
9934                 buf += sprintf(buf, "VEPA ");
9935
9936         BUG_ON(buf > (string + INFO_STRING_LEN));
9937         dev_info(&pf->pdev->dev, "%s\n", string);
9938         kfree(string);
9939 }
9940
9941 /**
9942  * i40e_probe - Device initialization routine
9943  * @pdev: PCI device information struct
9944  * @ent: entry in i40e_pci_tbl
9945  *
9946  * i40e_probe initializes a PF identified by a pci_dev structure.
9947  * The OS initialization, configuring of the PF private structure,
9948  * and a hardware reset occur.
9949  *
9950  * Returns 0 on success, negative on failure
9951  **/
9952 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9953 {
9954         struct i40e_aq_get_phy_abilities_resp abilities;
9955         struct i40e_pf *pf;
9956         struct i40e_hw *hw;
9957         static u16 pfs_found;
9958         u16 wol_nvm_bits;
9959         u16 link_status;
9960         int err = 0;
9961         u32 len;
9962         u32 i;
9963
9964         err = pci_enable_device_mem(pdev);
9965         if (err)
9966                 return err;
9967
9968         /* set up for high or low dma */
9969         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
9970         if (err) {
9971                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
9972                 if (err) {
9973                         dev_err(&pdev->dev,
9974                                 "DMA configuration failed: 0x%x\n", err);
9975                         goto err_dma;
9976                 }
9977         }
9978
9979         /* set up pci connections */
9980         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
9981                                            IORESOURCE_MEM), i40e_driver_name);
9982         if (err) {
9983                 dev_info(&pdev->dev,
9984                          "pci_request_selected_regions failed %d\n", err);
9985                 goto err_pci_reg;
9986         }
9987
9988         pci_enable_pcie_error_reporting(pdev);
9989         pci_set_master(pdev);
9990
9991         /* Now that we have a PCI connection, we need to do the
9992          * low level device setup.  This is primarily setting up
9993          * the Admin Queue structures and then querying for the
9994          * device's current profile information.
9995          */
9996         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
9997         if (!pf) {
9998                 err = -ENOMEM;
9999                 goto err_pf_alloc;
10000         }
10001         pf->next_vsi = 0;
10002         pf->pdev = pdev;
10003         set_bit(__I40E_DOWN, &pf->state);
10004
10005         hw = &pf->hw;
10006         hw->back = pf;
10007
10008         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
10009                                 I40E_MAX_CSR_SPACE);
10010
10011         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
10012         if (!hw->hw_addr) {
10013                 err = -EIO;
10014                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
10015                          (unsigned int)pci_resource_start(pdev, 0),
10016                          pf->ioremap_len, err);
10017                 goto err_ioremap;
10018         }
10019         hw->vendor_id = pdev->vendor;
10020         hw->device_id = pdev->device;
10021         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10022         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10023         hw->subsystem_device_id = pdev->subsystem_device;
10024         hw->bus.device = PCI_SLOT(pdev->devfn);
10025         hw->bus.func = PCI_FUNC(pdev->devfn);
10026         pf->instance = pfs_found;
10027
10028         if (debug != -1) {
10029                 pf->msg_enable = pf->hw.debug_mask;
10030                 pf->msg_enable = debug;
10031         }
10032
10033         /* do a special CORER for clearing PXE mode once at init */
10034         if (hw->revision_id == 0 &&
10035             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10036                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10037                 i40e_flush(hw);
10038                 msleep(200);
10039                 pf->corer_count++;
10040
10041                 i40e_clear_pxe_mode(hw);
10042         }
10043
10044         /* Reset here to make sure all is clean and to define PF 'n' */
10045         i40e_clear_hw(hw);
10046         err = i40e_pf_reset(hw);
10047         if (err) {
10048                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10049                 goto err_pf_reset;
10050         }
10051         pf->pfr_count++;
10052
10053         hw->aq.num_arq_entries = I40E_AQ_LEN;
10054         hw->aq.num_asq_entries = I40E_AQ_LEN;
10055         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10056         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10057         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10058
10059         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10060                  "%s-%s:misc",
10061                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10062
10063         err = i40e_init_shared_code(hw);
10064         if (err) {
10065                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10066                          err);
10067                 goto err_pf_reset;
10068         }
10069
10070         /* set up a default setting for link flow control */
10071         pf->hw.fc.requested_mode = I40E_FC_NONE;
10072
10073         err = i40e_init_adminq(hw);
10074
10075         /* provide nvm, fw, api versions */
10076         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
10077                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
10078                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
10079                  i40e_nvm_version_str(hw));
10080
10081         if (err) {
10082                 dev_info(&pdev->dev,
10083                          "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");
10084                 goto err_pf_reset;
10085         }
10086
10087         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10088             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10089                 dev_info(&pdev->dev,
10090                          "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");
10091         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10092                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10093                 dev_info(&pdev->dev,
10094                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10095
10096         i40e_verify_eeprom(pf);
10097
10098         /* Rev 0 hardware was never productized */
10099         if (hw->revision_id < 1)
10100                 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");
10101
10102         i40e_clear_pxe_mode(hw);
10103         err = i40e_get_capabilities(pf);
10104         if (err)
10105                 goto err_adminq_setup;
10106
10107         err = i40e_sw_init(pf);
10108         if (err) {
10109                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10110                 goto err_sw_init;
10111         }
10112
10113         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10114                                 hw->func_caps.num_rx_qp,
10115                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10116         if (err) {
10117                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10118                 goto err_init_lan_hmc;
10119         }
10120
10121         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10122         if (err) {
10123                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10124                 err = -ENOENT;
10125                 goto err_configure_lan_hmc;
10126         }
10127
10128         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10129          * Ignore error return codes because if it was already disabled via
10130          * hardware settings this will fail
10131          */
10132         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
10133             (pf->hw.aq.fw_maj_ver < 4)) {
10134                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10135                 i40e_aq_stop_lldp(hw, true, NULL);
10136         }
10137
10138         i40e_get_mac_addr(hw, hw->mac.addr);
10139         if (!is_valid_ether_addr(hw->mac.addr)) {
10140                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10141                 err = -EIO;
10142                 goto err_mac_addr;
10143         }
10144         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10145         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10146         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10147         if (is_valid_ether_addr(hw->mac.port_addr))
10148                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10149 #ifdef I40E_FCOE
10150         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10151         if (err)
10152                 dev_info(&pdev->dev,
10153                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10154         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10155                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10156                          hw->mac.san_addr);
10157                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10158         }
10159         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10160 #endif /* I40E_FCOE */
10161
10162         pci_set_drvdata(pdev, pf);
10163         pci_save_state(pdev);
10164 #ifdef CONFIG_I40E_DCB
10165         err = i40e_init_pf_dcb(pf);
10166         if (err) {
10167                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10168                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10169                 /* Continue without DCB enabled */
10170         }
10171 #endif /* CONFIG_I40E_DCB */
10172
10173         /* set up periodic task facility */
10174         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10175         pf->service_timer_period = HZ;
10176
10177         INIT_WORK(&pf->service_task, i40e_service_task);
10178         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10179         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10180
10181         /* NVM bit on means WoL disabled for the port */
10182         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
10183         if ((1 << hw->port) & wol_nvm_bits || hw->partition_id != 1)
10184                 pf->wol_en = false;
10185         else
10186                 pf->wol_en = true;
10187         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10188
10189         /* set up the main switch operations */
10190         i40e_determine_queue_usage(pf);
10191         err = i40e_init_interrupt_scheme(pf);
10192         if (err)
10193                 goto err_switch_setup;
10194
10195         /* The number of VSIs reported by the FW is the minimum guaranteed
10196          * to us; HW supports far more and we share the remaining pool with
10197          * the other PFs. We allocate space for more than the guarantee with
10198          * the understanding that we might not get them all later.
10199          */
10200         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10201                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10202         else
10203                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10204
10205         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10206         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
10207         pf->vsi = kzalloc(len, GFP_KERNEL);
10208         if (!pf->vsi) {
10209                 err = -ENOMEM;
10210                 goto err_switch_setup;
10211         }
10212
10213 #ifdef CONFIG_PCI_IOV
10214         /* prep for VF support */
10215         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10216             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10217             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10218                 if (pci_num_vf(pdev))
10219                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
10220         }
10221 #endif
10222         err = i40e_setup_pf_switch(pf, false);
10223         if (err) {
10224                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
10225                 goto err_vsis;
10226         }
10227         /* if FDIR VSI was set up, start it now */
10228         for (i = 0; i < pf->num_alloc_vsi; i++) {
10229                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
10230                         i40e_vsi_open(pf->vsi[i]);
10231                         break;
10232                 }
10233         }
10234
10235         /* driver is only interested in link up/down and module qualification
10236          * reports from firmware
10237          */
10238         err = i40e_aq_set_phy_int_mask(&pf->hw,
10239                                        I40E_AQ_EVENT_LINK_UPDOWN |
10240                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
10241         if (err)
10242                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
10243                          i40e_stat_str(&pf->hw, err),
10244                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10245
10246         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
10247             (pf->hw.aq.fw_maj_ver < 4)) {
10248                 msleep(75);
10249                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
10250                 if (err)
10251                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
10252                                  i40e_stat_str(&pf->hw, err),
10253                                  i40e_aq_str(&pf->hw,
10254                                              pf->hw.aq.asq_last_status));
10255         }
10256         /* The main driver is (mostly) up and happy. We need to set this state
10257          * before setting up the misc vector or we get a race and the vector
10258          * ends up disabled forever.
10259          */
10260         clear_bit(__I40E_DOWN, &pf->state);
10261
10262         /* In case of MSIX we are going to setup the misc vector right here
10263          * to handle admin queue events etc. In case of legacy and MSI
10264          * the misc functionality and queue processing is combined in
10265          * the same vector and that gets setup at open.
10266          */
10267         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
10268                 err = i40e_setup_misc_vector(pf);
10269                 if (err) {
10270                         dev_info(&pdev->dev,
10271                                  "setup of misc vector failed: %d\n", err);
10272                         goto err_vsis;
10273                 }
10274         }
10275
10276 #ifdef CONFIG_PCI_IOV
10277         /* prep for VF support */
10278         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10279             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10280             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10281                 u32 val;
10282
10283                 /* disable link interrupts for VFs */
10284                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
10285                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
10286                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
10287                 i40e_flush(hw);
10288
10289                 if (pci_num_vf(pdev)) {
10290                         dev_info(&pdev->dev,
10291                                  "Active VFs found, allocating resources.\n");
10292                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
10293                         if (err)
10294                                 dev_info(&pdev->dev,
10295                                          "Error %d allocating resources for existing VFs\n",
10296                                          err);
10297                 }
10298         }
10299 #endif /* CONFIG_PCI_IOV */
10300
10301         pfs_found++;
10302
10303         i40e_dbg_pf_init(pf);
10304
10305         /* tell the firmware that we're starting */
10306         i40e_send_version(pf);
10307
10308         /* since everything's happy, start the service_task timer */
10309         mod_timer(&pf->service_timer,
10310                   round_jiffies(jiffies + pf->service_timer_period));
10311
10312 #ifdef I40E_FCOE
10313         /* create FCoE interface */
10314         i40e_fcoe_vsi_setup(pf);
10315
10316 #endif
10317 #define PCI_SPEED_SIZE 8
10318 #define PCI_WIDTH_SIZE 8
10319         /* Devices on the IOSF bus do not have this information
10320          * and will report PCI Gen 1 x 1 by default so don't bother
10321          * checking them.
10322          */
10323         if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
10324                 char speed[PCI_SPEED_SIZE] = "Unknown";
10325                 char width[PCI_WIDTH_SIZE] = "Unknown";
10326
10327                 /* Get the negotiated link width and speed from PCI config
10328                  * space
10329                  */
10330                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
10331                                           &link_status);
10332
10333                 i40e_set_pci_config_data(hw, link_status);
10334
10335                 switch (hw->bus.speed) {
10336                 case i40e_bus_speed_8000:
10337                         strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
10338                 case i40e_bus_speed_5000:
10339                         strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
10340                 case i40e_bus_speed_2500:
10341                         strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
10342                 default:
10343                         break;
10344                 }
10345                 switch (hw->bus.width) {
10346                 case i40e_bus_width_pcie_x8:
10347                         strncpy(width, "8", PCI_WIDTH_SIZE); break;
10348                 case i40e_bus_width_pcie_x4:
10349                         strncpy(width, "4", PCI_WIDTH_SIZE); break;
10350                 case i40e_bus_width_pcie_x2:
10351                         strncpy(width, "2", PCI_WIDTH_SIZE); break;
10352                 case i40e_bus_width_pcie_x1:
10353                         strncpy(width, "1", PCI_WIDTH_SIZE); break;
10354                 default:
10355                         break;
10356                 }
10357
10358                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
10359                          speed, width);
10360
10361                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
10362                     hw->bus.speed < i40e_bus_speed_8000) {
10363                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
10364                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
10365                 }
10366         }
10367
10368         /* get the requested speeds from the fw */
10369         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
10370         if (err)
10371                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
10372                         i40e_stat_str(&pf->hw, err),
10373                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10374         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
10375
10376         /* get the supported phy types from the fw */
10377         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
10378         if (err)
10379                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
10380                         i40e_stat_str(&pf->hw, err),
10381                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10382         pf->hw.phy.phy_types = le32_to_cpu(abilities.phy_type);
10383
10384         /* print a string summarizing features */
10385         i40e_print_features(pf);
10386
10387         return 0;
10388
10389         /* Unwind what we've done if something failed in the setup */
10390 err_vsis:
10391         set_bit(__I40E_DOWN, &pf->state);
10392         i40e_clear_interrupt_scheme(pf);
10393         kfree(pf->vsi);
10394 err_switch_setup:
10395         i40e_reset_interrupt_capability(pf);
10396         del_timer_sync(&pf->service_timer);
10397 err_mac_addr:
10398 err_configure_lan_hmc:
10399         (void)i40e_shutdown_lan_hmc(hw);
10400 err_init_lan_hmc:
10401         kfree(pf->qp_pile);
10402 err_sw_init:
10403 err_adminq_setup:
10404         (void)i40e_shutdown_adminq(hw);
10405 err_pf_reset:
10406         iounmap(hw->hw_addr);
10407 err_ioremap:
10408         kfree(pf);
10409 err_pf_alloc:
10410         pci_disable_pcie_error_reporting(pdev);
10411         pci_release_selected_regions(pdev,
10412                                      pci_select_bars(pdev, IORESOURCE_MEM));
10413 err_pci_reg:
10414 err_dma:
10415         pci_disable_device(pdev);
10416         return err;
10417 }
10418
10419 /**
10420  * i40e_remove - Device removal routine
10421  * @pdev: PCI device information struct
10422  *
10423  * i40e_remove is called by the PCI subsystem to alert the driver
10424  * that is should release a PCI device.  This could be caused by a
10425  * Hot-Plug event, or because the driver is going to be removed from
10426  * memory.
10427  **/
10428 static void i40e_remove(struct pci_dev *pdev)
10429 {
10430         struct i40e_pf *pf = pci_get_drvdata(pdev);
10431         i40e_status ret_code;
10432         int i;
10433
10434         i40e_dbg_pf_exit(pf);
10435
10436         i40e_ptp_stop(pf);
10437
10438         /* no more scheduling of any task */
10439         set_bit(__I40E_DOWN, &pf->state);
10440         del_timer_sync(&pf->service_timer);
10441         cancel_work_sync(&pf->service_task);
10442         i40e_fdir_teardown(pf);
10443
10444         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
10445                 i40e_free_vfs(pf);
10446                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
10447         }
10448
10449         i40e_fdir_teardown(pf);
10450
10451         /* If there is a switch structure or any orphans, remove them.
10452          * This will leave only the PF's VSI remaining.
10453          */
10454         for (i = 0; i < I40E_MAX_VEB; i++) {
10455                 if (!pf->veb[i])
10456                         continue;
10457
10458                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
10459                     pf->veb[i]->uplink_seid == 0)
10460                         i40e_switch_branch_release(pf->veb[i]);
10461         }
10462
10463         /* Now we can shutdown the PF's VSI, just before we kill
10464          * adminq and hmc.
10465          */
10466         if (pf->vsi[pf->lan_vsi])
10467                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
10468
10469         /* shutdown and destroy the HMC */
10470         if (pf->hw.hmc.hmc_obj) {
10471                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
10472                 if (ret_code)
10473                         dev_warn(&pdev->dev,
10474                                  "Failed to destroy the HMC resources: %d\n",
10475                                  ret_code);
10476         }
10477
10478         /* shutdown the adminq */
10479         ret_code = i40e_shutdown_adminq(&pf->hw);
10480         if (ret_code)
10481                 dev_warn(&pdev->dev,
10482                          "Failed to destroy the Admin Queue resources: %d\n",
10483                          ret_code);
10484
10485         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
10486         i40e_clear_interrupt_scheme(pf);
10487         for (i = 0; i < pf->num_alloc_vsi; i++) {
10488                 if (pf->vsi[i]) {
10489                         i40e_vsi_clear_rings(pf->vsi[i]);
10490                         i40e_vsi_clear(pf->vsi[i]);
10491                         pf->vsi[i] = NULL;
10492                 }
10493         }
10494
10495         for (i = 0; i < I40E_MAX_VEB; i++) {
10496                 kfree(pf->veb[i]);
10497                 pf->veb[i] = NULL;
10498         }
10499
10500         kfree(pf->qp_pile);
10501         kfree(pf->vsi);
10502
10503         iounmap(pf->hw.hw_addr);
10504         kfree(pf);
10505         pci_release_selected_regions(pdev,
10506                                      pci_select_bars(pdev, IORESOURCE_MEM));
10507
10508         pci_disable_pcie_error_reporting(pdev);
10509         pci_disable_device(pdev);
10510 }
10511
10512 /**
10513  * i40e_pci_error_detected - warning that something funky happened in PCI land
10514  * @pdev: PCI device information struct
10515  *
10516  * Called to warn that something happened and the error handling steps
10517  * are in progress.  Allows the driver to quiesce things, be ready for
10518  * remediation.
10519  **/
10520 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
10521                                                 enum pci_channel_state error)
10522 {
10523         struct i40e_pf *pf = pci_get_drvdata(pdev);
10524
10525         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
10526
10527         /* shutdown all operations */
10528         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
10529                 rtnl_lock();
10530                 i40e_prep_for_reset(pf);
10531                 rtnl_unlock();
10532         }
10533
10534         /* Request a slot reset */
10535         return PCI_ERS_RESULT_NEED_RESET;
10536 }
10537
10538 /**
10539  * i40e_pci_error_slot_reset - a PCI slot reset just happened
10540  * @pdev: PCI device information struct
10541  *
10542  * Called to find if the driver can work with the device now that
10543  * the pci slot has been reset.  If a basic connection seems good
10544  * (registers are readable and have sane content) then return a
10545  * happy little PCI_ERS_RESULT_xxx.
10546  **/
10547 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
10548 {
10549         struct i40e_pf *pf = pci_get_drvdata(pdev);
10550         pci_ers_result_t result;
10551         int err;
10552         u32 reg;
10553
10554         dev_dbg(&pdev->dev, "%s\n", __func__);
10555         if (pci_enable_device_mem(pdev)) {
10556                 dev_info(&pdev->dev,
10557                          "Cannot re-enable PCI device after reset.\n");
10558                 result = PCI_ERS_RESULT_DISCONNECT;
10559         } else {
10560                 pci_set_master(pdev);
10561                 pci_restore_state(pdev);
10562                 pci_save_state(pdev);
10563                 pci_wake_from_d3(pdev, false);
10564
10565                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
10566                 if (reg == 0)
10567                         result = PCI_ERS_RESULT_RECOVERED;
10568                 else
10569                         result = PCI_ERS_RESULT_DISCONNECT;
10570         }
10571
10572         err = pci_cleanup_aer_uncorrect_error_status(pdev);
10573         if (err) {
10574                 dev_info(&pdev->dev,
10575                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
10576                          err);
10577                 /* non-fatal, continue */
10578         }
10579
10580         return result;
10581 }
10582
10583 /**
10584  * i40e_pci_error_resume - restart operations after PCI error recovery
10585  * @pdev: PCI device information struct
10586  *
10587  * Called to allow the driver to bring things back up after PCI error
10588  * and/or reset recovery has finished.
10589  **/
10590 static void i40e_pci_error_resume(struct pci_dev *pdev)
10591 {
10592         struct i40e_pf *pf = pci_get_drvdata(pdev);
10593
10594         dev_dbg(&pdev->dev, "%s\n", __func__);
10595         if (test_bit(__I40E_SUSPENDED, &pf->state))
10596                 return;
10597
10598         rtnl_lock();
10599         i40e_handle_reset_warning(pf);
10600         rtnl_unlock();
10601 }
10602
10603 /**
10604  * i40e_shutdown - PCI callback for shutting down
10605  * @pdev: PCI device information struct
10606  **/
10607 static void i40e_shutdown(struct pci_dev *pdev)
10608 {
10609         struct i40e_pf *pf = pci_get_drvdata(pdev);
10610         struct i40e_hw *hw = &pf->hw;
10611
10612         set_bit(__I40E_SUSPENDED, &pf->state);
10613         set_bit(__I40E_DOWN, &pf->state);
10614         rtnl_lock();
10615         i40e_prep_for_reset(pf);
10616         rtnl_unlock();
10617
10618         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10619         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10620
10621         del_timer_sync(&pf->service_timer);
10622         cancel_work_sync(&pf->service_task);
10623         i40e_fdir_teardown(pf);
10624
10625         rtnl_lock();
10626         i40e_prep_for_reset(pf);
10627         rtnl_unlock();
10628
10629         wr32(hw, I40E_PFPM_APM,
10630              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10631         wr32(hw, I40E_PFPM_WUFC,
10632              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10633
10634         i40e_clear_interrupt_scheme(pf);
10635
10636         if (system_state == SYSTEM_POWER_OFF) {
10637                 pci_wake_from_d3(pdev, pf->wol_en);
10638                 pci_set_power_state(pdev, PCI_D3hot);
10639         }
10640 }
10641
10642 #ifdef CONFIG_PM
10643 /**
10644  * i40e_suspend - PCI callback for moving to D3
10645  * @pdev: PCI device information struct
10646  **/
10647 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
10648 {
10649         struct i40e_pf *pf = pci_get_drvdata(pdev);
10650         struct i40e_hw *hw = &pf->hw;
10651
10652         set_bit(__I40E_SUSPENDED, &pf->state);
10653         set_bit(__I40E_DOWN, &pf->state);
10654
10655         rtnl_lock();
10656         i40e_prep_for_reset(pf);
10657         rtnl_unlock();
10658
10659         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10660         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10661
10662         pci_wake_from_d3(pdev, pf->wol_en);
10663         pci_set_power_state(pdev, PCI_D3hot);
10664
10665         return 0;
10666 }
10667
10668 /**
10669  * i40e_resume - PCI callback for waking up from D3
10670  * @pdev: PCI device information struct
10671  **/
10672 static int i40e_resume(struct pci_dev *pdev)
10673 {
10674         struct i40e_pf *pf = pci_get_drvdata(pdev);
10675         u32 err;
10676
10677         pci_set_power_state(pdev, PCI_D0);
10678         pci_restore_state(pdev);
10679         /* pci_restore_state() clears dev->state_saves, so
10680          * call pci_save_state() again to restore it.
10681          */
10682         pci_save_state(pdev);
10683
10684         err = pci_enable_device_mem(pdev);
10685         if (err) {
10686                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
10687                 return err;
10688         }
10689         pci_set_master(pdev);
10690
10691         /* no wakeup events while running */
10692         pci_wake_from_d3(pdev, false);
10693
10694         /* handling the reset will rebuild the device state */
10695         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
10696                 clear_bit(__I40E_DOWN, &pf->state);
10697                 rtnl_lock();
10698                 i40e_reset_and_rebuild(pf, false);
10699                 rtnl_unlock();
10700         }
10701
10702         return 0;
10703 }
10704
10705 #endif
10706 static const struct pci_error_handlers i40e_err_handler = {
10707         .error_detected = i40e_pci_error_detected,
10708         .slot_reset = i40e_pci_error_slot_reset,
10709         .resume = i40e_pci_error_resume,
10710 };
10711
10712 static struct pci_driver i40e_driver = {
10713         .name     = i40e_driver_name,
10714         .id_table = i40e_pci_tbl,
10715         .probe    = i40e_probe,
10716         .remove   = i40e_remove,
10717 #ifdef CONFIG_PM
10718         .suspend  = i40e_suspend,
10719         .resume   = i40e_resume,
10720 #endif
10721         .shutdown = i40e_shutdown,
10722         .err_handler = &i40e_err_handler,
10723         .sriov_configure = i40e_pci_sriov_configure,
10724 };
10725
10726 /**
10727  * i40e_init_module - Driver registration routine
10728  *
10729  * i40e_init_module is the first routine called when the driver is
10730  * loaded. All it does is register with the PCI subsystem.
10731  **/
10732 static int __init i40e_init_module(void)
10733 {
10734         pr_info("%s: %s - version %s\n", i40e_driver_name,
10735                 i40e_driver_string, i40e_driver_version_str);
10736         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
10737
10738         i40e_dbg_init();
10739         return pci_register_driver(&i40e_driver);
10740 }
10741 module_init(i40e_init_module);
10742
10743 /**
10744  * i40e_exit_module - Driver exit cleanup routine
10745  *
10746  * i40e_exit_module is called just before the driver is removed
10747  * from memory.
10748  **/
10749 static void __exit i40e_exit_module(void)
10750 {
10751         pci_unregister_driver(&i40e_driver);
10752         i40e_dbg_exit();
10753 }
10754 module_exit(i40e_exit_module);