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

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2016 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 #include <linux/etherdevice.h>
  28 #include <linux/of_net.h>
  29 #include <linux/pci.h>
  30
  31 /* Local includes */
  32 #include "i40e.h"
  33 #include "i40e_diag.h"
  34 #include <net/udp_tunnel.h>
  35
  36 const char i40e_driver_name[] = "i40e";
  37 static const char i40e_driver_string[] =
  38                         "Intel(R) Ethernet Connection XL710 Network Driver";
  39
  40 #define DRV_KERN "-k"
  41
  42 #define DRV_VERSION_MAJOR 1
  43 #define DRV_VERSION_MINOR 6
  44 #define DRV_VERSION_BUILD 16
  45 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
  46              __stringify(DRV_VERSION_MINOR) "." \
  47              __stringify(DRV_VERSION_BUILD)    DRV_KERN
  48 const char i40e_driver_version_str[] = DRV_VERSION;
  49 static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
  50
  51 /* a bit of forward declarations */
  52 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  53 static void i40e_handle_reset_warning(struct i40e_pf *pf);
  54 static int i40e_add_vsi(struct i40e_vsi *vsi);
  55 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  56 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
  57 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  58 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  59 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  60 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  61 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  62
  63 /* i40e_pci_tbl - PCI Device ID Table
  64  *
  65  * Last entry must be all 0s
  66  *
  67  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  68  *   Class, Class Mask, private data (not used) }
  69  */
  70 static const struct pci_device_id i40e_pci_tbl[] = {
  71         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  72         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  78         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  79         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
  80         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  81         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_X722), 0},
  82         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_X722), 0},
  83         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  84         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  85         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  86         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_I_X722), 0},
  87         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  88         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
  89         /* required last entry */
  90         {0, }
  91 };
  92 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  93
  94 #define I40E_MAX_VF_COUNT 128
  95 static int debug = -1;
  96 module_param(debug, int, 0);
  97 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  98
  99 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
 100 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
 101 MODULE_LICENSE("GPL");
 102 MODULE_VERSION(DRV_VERSION);
 103
 104 static struct workqueue_struct *i40e_wq;
 105
 106 /**
 107  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 108  * @hw:   pointer to the HW structure
 109  * @mem:  ptr to mem struct to fill out
 110  * @size: size of memory requested
 111  * @alignment: what to align the allocation to
 112  **/
 113 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 114                             u64 size, u32 alignment)
 115 {
 116         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 117
 118         mem->size = ALIGN(size, alignment);
 119         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 120                                       &mem->pa, GFP_KERNEL);
 121         if (!mem->va)
 122                 return -ENOMEM;
 123
 124         return 0;
 125 }
 126
 127 /**
 128  * i40e_free_dma_mem_d - OS specific memory free for shared code
 129  * @hw:   pointer to the HW structure
 130  * @mem:  ptr to mem struct to free
 131  **/
 132 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 133 {
 134         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 135
 136         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 137         mem->va = NULL;
 138         mem->pa = 0;
 139         mem->size = 0;
 140
 141         return 0;
 142 }
 143
 144 /**
 145  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 146  * @hw:   pointer to the HW structure
 147  * @mem:  ptr to mem struct to fill out
 148  * @size: size of memory requested
 149  **/
 150 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 151                              u32 size)
 152 {
 153         mem->size = size;
 154         mem->va = kzalloc(size, GFP_KERNEL);
 155
 156         if (!mem->va)
 157                 return -ENOMEM;
 158
 159         return 0;
 160 }
 161
 162 /**
 163  * i40e_free_virt_mem_d - OS specific memory free for shared code
 164  * @hw:   pointer to the HW structure
 165  * @mem:  ptr to mem struct to free
 166  **/
 167 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 168 {
 169         /* it's ok to kfree a NULL pointer */
 170         kfree(mem->va);
 171         mem->va = NULL;
 172         mem->size = 0;
 173
 174         return 0;
 175 }
 176
 177 /**
 178  * i40e_get_lump - find a lump of free generic resource
 179  * @pf: board private structure
 180  * @pile: the pile of resource to search
 181  * @needed: the number of items needed
 182  * @id: an owner id to stick on the items assigned
 183  *
 184  * Returns the base item index of the lump, or negative for error
 185  *
 186  * The search_hint trick and lack of advanced fit-finding only work
 187  * because we're highly likely to have all the same size lump requests.
 188  * Linear search time and any fragmentation should be minimal.
 189  **/
 190 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 191                          u16 needed, u16 id)
 192 {
 193         int ret = -ENOMEM;
 194         int i, j;
 195
 196         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 197                 dev_info(&pf->pdev->dev,
 198                          "param err: pile=%p needed=%d id=0x%04x\n",
 199                          pile, needed, id);
 200                 return -EINVAL;
 201         }
 202
 203         /* start the linear search with an imperfect hint */
 204         i = pile->search_hint;
 205         while (i < pile->num_entries) {
 206                 /* skip already allocated entries */
 207                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 208                         i++;
 209                         continue;
 210                 }
 211
 212                 /* do we have enough in this lump? */
 213                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 214                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 215                                 break;
 216                 }
 217
 218                 if (j == needed) {
 219                         /* there was enough, so assign it to the requestor */
 220                         for (j = 0; j < needed; j++)
 221                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 222                         ret = i;
 223                         pile->search_hint = i + j;
 224                         break;
 225                 }
 226
 227                 /* not enough, so skip over it and continue looking */
 228                 i += j;
 229         }
 230
 231         return ret;
 232 }
 233
 234 /**
 235  * i40e_put_lump - return a lump of generic resource
 236  * @pile: the pile of resource to search
 237  * @index: the base item index
 238  * @id: the owner id of the items assigned
 239  *
 240  * Returns the count of items in the lump
 241  **/
 242 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 243 {
 244         int valid_id = (id | I40E_PILE_VALID_BIT);
 245         int count = 0;
 246         int i;
 247
 248         if (!pile || index >= pile->num_entries)
 249                 return -EINVAL;
 250
 251         for (i = index;
 252              i < pile->num_entries && pile->list[i] == valid_id;
 253              i++) {
 254                 pile->list[i] = 0;
 255                 count++;
 256         }
 257
 258         if (count && index < pile->search_hint)
 259                 pile->search_hint = index;
 260
 261         return count;
 262 }
 263
 264 /**
 265  * i40e_find_vsi_from_id - searches for the vsi with the given id
 266  * @pf - the pf structure to search for the vsi
 267  * @id - id of the vsi it is searching for
 268  **/
 269 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 270 {
 271         int i;
 272
 273         for (i = 0; i < pf->num_alloc_vsi; i++)
 274                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 275                         return pf->vsi[i];
 276
 277         return NULL;
 278 }
 279
 280 /**
 281  * i40e_service_event_schedule - Schedule the service task to wake up
 282  * @pf: board private structure
 283  *
 284  * If not already scheduled, this puts the task into the work queue
 285  **/
 286 void i40e_service_event_schedule(struct i40e_pf *pf)
 287 {
 288         if (!test_bit(__I40E_DOWN, &pf->state) &&
 289             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 290             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 291                 queue_work(i40e_wq, &pf->service_task);
 292 }
 293
 294 /**
 295  * i40e_tx_timeout - Respond to a Tx Hang
 296  * @netdev: network interface device structure
 297  *
 298  * If any port has noticed a Tx timeout, it is likely that the whole
 299  * device is munged, not just the one netdev port, so go for the full
 300  * reset.
 301  **/
 302 #ifdef I40E_FCOE
 303 void i40e_tx_timeout(struct net_device *netdev)
 304 #else
 305 static void i40e_tx_timeout(struct net_device *netdev)
 306 #endif
 307 {
 308         struct i40e_netdev_priv *np = netdev_priv(netdev);
 309         struct i40e_vsi *vsi = np->vsi;
 310         struct i40e_pf *pf = vsi->back;
 311         struct i40e_ring *tx_ring = NULL;
 312         unsigned int i, hung_queue = 0;
 313         u32 head, val;
 314
 315         pf->tx_timeout_count++;
 316
 317         /* find the stopped queue the same way the stack does */
 318         for (i = 0; i < netdev->num_tx_queues; i++) {
 319                 struct netdev_queue *q;
 320                 unsigned long trans_start;
 321
 322                 q = netdev_get_tx_queue(netdev, i);
 323                 trans_start = q->trans_start;
 324                 if (netif_xmit_stopped(q) &&
 325                     time_after(jiffies,
 326                                (trans_start + netdev->watchdog_timeo))) {
 327                         hung_queue = i;
 328                         break;
 329                 }
 330         }
 331
 332         if (i == netdev->num_tx_queues) {
 333                 netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
 334         } else {
 335                 /* now that we have an index, find the tx_ring struct */
 336                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 337                         if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
 338                                 if (hung_queue ==
 339                                     vsi->tx_rings[i]->queue_index) {
 340                                         tx_ring = vsi->tx_rings[i];
 341                                         break;
 342                                 }
 343                         }
 344                 }
 345         }
 346
 347         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 348                 pf->tx_timeout_recovery_level = 1;  /* reset after some time */
 349         else if (time_before(jiffies,
 350                       (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
 351                 return;   /* don't do any new action before the next timeout */
 352
 353         if (tx_ring) {
 354                 head = i40e_get_head(tx_ring);
 355                 /* Read interrupt register */
 356                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
 357                         val = rd32(&pf->hw,
 358                              I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
 359                                                 tx_ring->vsi->base_vector - 1));
 360                 else
 361                         val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
 362
 363                 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",
 364                             vsi->seid, hung_queue, tx_ring->next_to_clean,
 365                             head, tx_ring->next_to_use,
 366                             readl(tx_ring->tail), val);
 367         }
 368
 369         pf->tx_timeout_last_recovery = jiffies;
 370         netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
 371                     pf->tx_timeout_recovery_level, hung_queue);
 372
 373         switch (pf->tx_timeout_recovery_level) {
 374         case 1:
 375                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 376                 break;
 377         case 2:
 378                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 379                 break;
 380         case 3:
 381                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 382                 break;
 383         default:
 384                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 385                 break;
 386         }
 387
 388         i40e_service_event_schedule(pf);
 389         pf->tx_timeout_recovery_level++;
 390 }
 391
 392 /**
 393  * i40e_get_vsi_stats_struct - Get System Network Statistics
 394  * @vsi: the VSI we care about
 395  *
 396  * Returns the address of the device statistics structure.
 397  * The statistics are actually updated from the service task.
 398  **/
 399 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 400 {
 401         return &vsi->net_stats;
 402 }
 403
 404 /**
 405  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 406  * @netdev: network interface device structure
 407  *
 408  * Returns the address of the device statistics structure.
 409  * The statistics are actually updated from the service task.
 410  **/
 411 #ifdef I40E_FCOE
 412 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 413                                              struct net_device *netdev,
 414                                              struct rtnl_link_stats64 *stats)
 415 #else
 416 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 417                                              struct net_device *netdev,
 418                                              struct rtnl_link_stats64 *stats)
 419 #endif
 420 {
 421         struct i40e_netdev_priv *np = netdev_priv(netdev);
 422         struct i40e_ring *tx_ring, *rx_ring;
 423         struct i40e_vsi *vsi = np->vsi;
 424         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 425         int i;
 426
 427         if (test_bit(__I40E_DOWN, &vsi->state))
 428                 return stats;
 429
 430         if (!vsi->tx_rings)
 431                 return stats;
 432
 433         rcu_read_lock();
 434         for (i = 0; i < vsi->num_queue_pairs; i++) {
 435                 u64 bytes, packets;
 436                 unsigned int start;
 437
 438                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 439                 if (!tx_ring)
 440                         continue;
 441
 442                 do {
 443                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 444                         packets = tx_ring->stats.packets;
 445                         bytes   = tx_ring->stats.bytes;
 446                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 447
 448                 stats->tx_packets += packets;
 449                 stats->tx_bytes   += bytes;
 450                 rx_ring = &tx_ring[1];
 451
 452                 do {
 453                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 454                         packets = rx_ring->stats.packets;
 455                         bytes   = rx_ring->stats.bytes;
 456                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 457
 458                 stats->rx_packets += packets;
 459                 stats->rx_bytes   += bytes;
 460         }
 461         rcu_read_unlock();
 462
 463         /* following stats updated by i40e_watchdog_subtask() */
 464         stats->multicast        = vsi_stats->multicast;
 465         stats->tx_errors        = vsi_stats->tx_errors;
 466         stats->tx_dropped       = vsi_stats->tx_dropped;
 467         stats->rx_errors        = vsi_stats->rx_errors;
 468         stats->rx_dropped       = vsi_stats->rx_dropped;
 469         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 470         stats->rx_length_errors = vsi_stats->rx_length_errors;
 471
 472         return stats;
 473 }
 474
 475 /**
 476  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 477  * @vsi: the VSI to have its stats reset
 478  **/
 479 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 480 {
 481         struct rtnl_link_stats64 *ns;
 482         int i;
 483
 484         if (!vsi)
 485                 return;
 486
 487         ns = i40e_get_vsi_stats_struct(vsi);
 488         memset(ns, 0, sizeof(*ns));
 489         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 490         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 491         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 492         if (vsi->rx_rings && vsi->rx_rings[0]) {
 493                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 494                         memset(&vsi->rx_rings[i]->stats, 0,
 495                                sizeof(vsi->rx_rings[i]->stats));
 496                         memset(&vsi->rx_rings[i]->rx_stats, 0,
 497                                sizeof(vsi->rx_rings[i]->rx_stats));
 498                         memset(&vsi->tx_rings[i]->stats, 0,
 499                                sizeof(vsi->tx_rings[i]->stats));
 500                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 501                                sizeof(vsi->tx_rings[i]->tx_stats));
 502                 }
 503         }
 504         vsi->stat_offsets_loaded = false;
 505 }
 506
 507 /**
 508  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 509  * @pf: the PF to be reset
 510  **/
 511 void i40e_pf_reset_stats(struct i40e_pf *pf)
 512 {
 513         int i;
 514
 515         memset(&pf->stats, 0, sizeof(pf->stats));
 516         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 517         pf->stat_offsets_loaded = false;
 518
 519         for (i = 0; i < I40E_MAX_VEB; i++) {
 520                 if (pf->veb[i]) {
 521                         memset(&pf->veb[i]->stats, 0,
 522                                sizeof(pf->veb[i]->stats));
 523                         memset(&pf->veb[i]->stats_offsets, 0,
 524                                sizeof(pf->veb[i]->stats_offsets));
 525                         pf->veb[i]->stat_offsets_loaded = false;
 526                 }
 527         }
 528         pf->hw_csum_rx_error = 0;
 529 }
 530
 531 /**
 532  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 533  * @hw: ptr to the hardware info
 534  * @hireg: the high 32 bit reg to read
 535  * @loreg: the low 32 bit reg to read
 536  * @offset_loaded: has the initial offset been loaded yet
 537  * @offset: ptr to current offset value
 538  * @stat: ptr to the stat
 539  *
 540  * Since the device stats are not reset at PFReset, they likely will not
 541  * be zeroed when the driver starts.  We'll save the first values read
 542  * and use them as offsets to be subtracted from the raw values in order
 543  * to report stats that count from zero.  In the process, we also manage
 544  * the potential roll-over.
 545  **/
 546 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 547                                bool offset_loaded, u64 *offset, u64 *stat)
 548 {
 549         u64 new_data;
 550
 551         if (hw->device_id == I40E_DEV_ID_QEMU) {
 552                 new_data = rd32(hw, loreg);
 553                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 554         } else {
 555                 new_data = rd64(hw, loreg);
 556         }
 557         if (!offset_loaded)
 558                 *offset = new_data;
 559         if (likely(new_data >= *offset))
 560                 *stat = new_data - *offset;
 561         else
 562                 *stat = (new_data + BIT_ULL(48)) - *offset;
 563         *stat &= 0xFFFFFFFFFFFFULL;
 564 }
 565
 566 /**
 567  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 568  * @hw: ptr to the hardware info
 569  * @reg: the hw reg to read
 570  * @offset_loaded: has the initial offset been loaded yet
 571  * @offset: ptr to current offset value
 572  * @stat: ptr to the stat
 573  **/
 574 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 575                                bool offset_loaded, u64 *offset, u64 *stat)
 576 {
 577         u32 new_data;
 578
 579         new_data = rd32(hw, reg);
 580         if (!offset_loaded)
 581                 *offset = new_data;
 582         if (likely(new_data >= *offset))
 583                 *stat = (u32)(new_data - *offset);
 584         else
 585                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 586 }
 587
 588 /**
 589  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 590  * @vsi: the VSI to be updated
 591  **/
 592 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 593 {
 594         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 595         struct i40e_pf *pf = vsi->back;
 596         struct i40e_hw *hw = &pf->hw;
 597         struct i40e_eth_stats *oes;
 598         struct i40e_eth_stats *es;     /* device's eth stats */
 599
 600         es = &vsi->eth_stats;
 601         oes = &vsi->eth_stats_offsets;
 602
 603         /* Gather up the stats that the hw collects */
 604         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 605                            vsi->stat_offsets_loaded,
 606                            &oes->tx_errors, &es->tx_errors);
 607         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 608                            vsi->stat_offsets_loaded,
 609                            &oes->rx_discards, &es->rx_discards);
 610         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 611                            vsi->stat_offsets_loaded,
 612                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 613         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 614                            vsi->stat_offsets_loaded,
 615                            &oes->tx_errors, &es->tx_errors);
 616
 617         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 618                            I40E_GLV_GORCL(stat_idx),
 619                            vsi->stat_offsets_loaded,
 620                            &oes->rx_bytes, &es->rx_bytes);
 621         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 622                            I40E_GLV_UPRCL(stat_idx),
 623                            vsi->stat_offsets_loaded,
 624                            &oes->rx_unicast, &es->rx_unicast);
 625         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 626                            I40E_GLV_MPRCL(stat_idx),
 627                            vsi->stat_offsets_loaded,
 628                            &oes->rx_multicast, &es->rx_multicast);
 629         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 630                            I40E_GLV_BPRCL(stat_idx),
 631                            vsi->stat_offsets_loaded,
 632                            &oes->rx_broadcast, &es->rx_broadcast);
 633
 634         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 635                            I40E_GLV_GOTCL(stat_idx),
 636                            vsi->stat_offsets_loaded,
 637                            &oes->tx_bytes, &es->tx_bytes);
 638         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 639                            I40E_GLV_UPTCL(stat_idx),
 640                            vsi->stat_offsets_loaded,
 641                            &oes->tx_unicast, &es->tx_unicast);
 642         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 643                            I40E_GLV_MPTCL(stat_idx),
 644                            vsi->stat_offsets_loaded,
 645                            &oes->tx_multicast, &es->tx_multicast);
 646         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 647                            I40E_GLV_BPTCL(stat_idx),
 648                            vsi->stat_offsets_loaded,
 649                            &oes->tx_broadcast, &es->tx_broadcast);
 650         vsi->stat_offsets_loaded = true;
 651 }
 652
 653 /**
 654  * i40e_update_veb_stats - Update Switch component statistics
 655  * @veb: the VEB being updated
 656  **/
 657 static void i40e_update_veb_stats(struct i40e_veb *veb)
 658 {
 659         struct i40e_pf *pf = veb->pf;
 660         struct i40e_hw *hw = &pf->hw;
 661         struct i40e_eth_stats *oes;
 662         struct i40e_eth_stats *es;     /* device's eth stats */
 663         struct i40e_veb_tc_stats *veb_oes;
 664         struct i40e_veb_tc_stats *veb_es;
 665         int i, idx = 0;
 666
 667         idx = veb->stats_idx;
 668         es = &veb->stats;
 669         oes = &veb->stats_offsets;
 670         veb_es = &veb->tc_stats;
 671         veb_oes = &veb->tc_stats_offsets;
 672
 673         /* Gather up the stats that the hw collects */
 674         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 675                            veb->stat_offsets_loaded,
 676                            &oes->tx_discards, &es->tx_discards);
 677         if (hw->revision_id > 0)
 678                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 679                                    veb->stat_offsets_loaded,
 680                                    &oes->rx_unknown_protocol,
 681                                    &es->rx_unknown_protocol);
 682         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 683                            veb->stat_offsets_loaded,
 684                            &oes->rx_bytes, &es->rx_bytes);
 685         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 686                            veb->stat_offsets_loaded,
 687                            &oes->rx_unicast, &es->rx_unicast);
 688         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 689                            veb->stat_offsets_loaded,
 690                            &oes->rx_multicast, &es->rx_multicast);
 691         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 692                            veb->stat_offsets_loaded,
 693                            &oes->rx_broadcast, &es->rx_broadcast);
 694
 695         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 696                            veb->stat_offsets_loaded,
 697                            &oes->tx_bytes, &es->tx_bytes);
 698         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 699                            veb->stat_offsets_loaded,
 700                            &oes->tx_unicast, &es->tx_unicast);
 701         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 702                            veb->stat_offsets_loaded,
 703                            &oes->tx_multicast, &es->tx_multicast);
 704         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 705                            veb->stat_offsets_loaded,
 706                            &oes->tx_broadcast, &es->tx_broadcast);
 707         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 708                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 709                                    I40E_GLVEBTC_RPCL(i, idx),
 710                                    veb->stat_offsets_loaded,
 711                                    &veb_oes->tc_rx_packets[i],
 712                                    &veb_es->tc_rx_packets[i]);
 713                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 714                                    I40E_GLVEBTC_RBCL(i, idx),
 715                                    veb->stat_offsets_loaded,
 716                                    &veb_oes->tc_rx_bytes[i],
 717                                    &veb_es->tc_rx_bytes[i]);
 718                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 719                                    I40E_GLVEBTC_TPCL(i, idx),
 720                                    veb->stat_offsets_loaded,
 721                                    &veb_oes->tc_tx_packets[i],
 722                                    &veb_es->tc_tx_packets[i]);
 723                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 724                                    I40E_GLVEBTC_TBCL(i, idx),
 725                                    veb->stat_offsets_loaded,
 726                                    &veb_oes->tc_tx_bytes[i],
 727                                    &veb_es->tc_tx_bytes[i]);
 728         }
 729         veb->stat_offsets_loaded = true;
 730 }
 731
 732 #ifdef I40E_FCOE
 733 /**
 734  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 735  * @vsi: the VSI that is capable of doing FCoE
 736  **/
 737 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 738 {
 739         struct i40e_pf *pf = vsi->back;
 740         struct i40e_hw *hw = &pf->hw;
 741         struct i40e_fcoe_stats *ofs;
 742         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 743         int idx;
 744
 745         if (vsi->type != I40E_VSI_FCOE)
 746                 return;
 747
 748         idx = hw->pf_id + I40E_FCOE_PF_STAT_OFFSET;
 749         fs = &vsi->fcoe_stats;
 750         ofs = &vsi->fcoe_stats_offsets;
 751
 752         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 753                            vsi->fcoe_stat_offsets_loaded,
 754                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 755         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 756                            vsi->fcoe_stat_offsets_loaded,
 757                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 758         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 759                            vsi->fcoe_stat_offsets_loaded,
 760                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 761         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 762                            vsi->fcoe_stat_offsets_loaded,
 763                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 764         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 765                            vsi->fcoe_stat_offsets_loaded,
 766                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 767         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 768                            vsi->fcoe_stat_offsets_loaded,
 769                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 770         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 771                            vsi->fcoe_stat_offsets_loaded,
 772                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 773         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 774                            vsi->fcoe_stat_offsets_loaded,
 775                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 776
 777         vsi->fcoe_stat_offsets_loaded = true;
 778 }
 779
 780 #endif
 781 /**
 782  * i40e_update_vsi_stats - Update the vsi statistics counters.
 783  * @vsi: the VSI to be updated
 784  *
 785  * There are a few instances where we store the same stat in a
 786  * couple of different structs.  This is partly because we have
 787  * the netdev stats that need to be filled out, which is slightly
 788  * different from the "eth_stats" defined by the chip and used in
 789  * VF communications.  We sort it out here.
 790  **/
 791 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 792 {
 793         struct i40e_pf *pf = vsi->back;
 794         struct rtnl_link_stats64 *ons;
 795         struct rtnl_link_stats64 *ns;   /* netdev stats */
 796         struct i40e_eth_stats *oes;
 797         struct i40e_eth_stats *es;     /* device's eth stats */
 798         u32 tx_restart, tx_busy;
 799         u64 tx_lost_interrupt;
 800         struct i40e_ring *p;
 801         u32 rx_page, rx_buf;
 802         u64 bytes, packets;
 803         unsigned int start;
 804         u64 tx_linearize;
 805         u64 tx_force_wb;
 806         u64 rx_p, rx_b;
 807         u64 tx_p, tx_b;
 808         u16 q;
 809
 810         if (test_bit(__I40E_DOWN, &vsi->state) ||
 811             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 812                 return;
 813
 814         ns = i40e_get_vsi_stats_struct(vsi);
 815         ons = &vsi->net_stats_offsets;
 816         es = &vsi->eth_stats;
 817         oes = &vsi->eth_stats_offsets;
 818
 819         /* Gather up the netdev and vsi stats that the driver collects
 820          * on the fly during packet processing
 821          */
 822         rx_b = rx_p = 0;
 823         tx_b = tx_p = 0;
 824         tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
 825         tx_lost_interrupt = 0;
 826         rx_page = 0;
 827         rx_buf = 0;
 828         rcu_read_lock();
 829         for (q = 0; q < vsi->num_queue_pairs; q++) {
 830                 /* locate Tx ring */
 831                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 832
 833                 do {
 834                         start = u64_stats_fetch_begin_irq(&p->syncp);
 835                         packets = p->stats.packets;
 836                         bytes = p->stats.bytes;
 837                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 838                 tx_b += bytes;
 839                 tx_p += packets;
 840                 tx_restart += p->tx_stats.restart_queue;
 841                 tx_busy += p->tx_stats.tx_busy;
 842                 tx_linearize += p->tx_stats.tx_linearize;
 843                 tx_force_wb += p->tx_stats.tx_force_wb;
 844                 tx_lost_interrupt += p->tx_stats.tx_lost_interrupt;
 845
 846                 /* Rx queue is part of the same block as Tx queue */
 847                 p = &p[1];
 848                 do {
 849                         start = u64_stats_fetch_begin_irq(&p->syncp);
 850                         packets = p->stats.packets;
 851                         bytes = p->stats.bytes;
 852                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 853                 rx_b += bytes;
 854                 rx_p += packets;
 855                 rx_buf += p->rx_stats.alloc_buff_failed;
 856                 rx_page += p->rx_stats.alloc_page_failed;
 857         }
 858         rcu_read_unlock();
 859         vsi->tx_restart = tx_restart;
 860         vsi->tx_busy = tx_busy;
 861         vsi->tx_linearize = tx_linearize;
 862         vsi->tx_force_wb = tx_force_wb;
 863         vsi->tx_lost_interrupt = tx_lost_interrupt;
 864         vsi->rx_page_failed = rx_page;
 865         vsi->rx_buf_failed = rx_buf;
 866
 867         ns->rx_packets = rx_p;
 868         ns->rx_bytes = rx_b;
 869         ns->tx_packets = tx_p;
 870         ns->tx_bytes = tx_b;
 871
 872         /* update netdev stats from eth stats */
 873         i40e_update_eth_stats(vsi);
 874         ons->tx_errors = oes->tx_errors;
 875         ns->tx_errors = es->tx_errors;
 876         ons->multicast = oes->rx_multicast;
 877         ns->multicast = es->rx_multicast;
 878         ons->rx_dropped = oes->rx_discards;
 879         ns->rx_dropped = es->rx_discards;
 880         ons->tx_dropped = oes->tx_discards;
 881         ns->tx_dropped = es->tx_discards;
 882
 883         /* pull in a couple PF stats if this is the main vsi */
 884         if (vsi == pf->vsi[pf->lan_vsi]) {
 885                 ns->rx_crc_errors = pf->stats.crc_errors;
 886                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 887                 ns->rx_length_errors = pf->stats.rx_length_errors;
 888         }
 889 }
 890
 891 /**
 892  * i40e_update_pf_stats - Update the PF statistics counters.
 893  * @pf: the PF to be updated
 894  **/
 895 static void i40e_update_pf_stats(struct i40e_pf *pf)
 896 {
 897         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 898         struct i40e_hw_port_stats *nsd = &pf->stats;
 899         struct i40e_hw *hw = &pf->hw;
 900         u32 val;
 901         int i;
 902
 903         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 904                            I40E_GLPRT_GORCL(hw->port),
 905                            pf->stat_offsets_loaded,
 906                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 907         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 908                            I40E_GLPRT_GOTCL(hw->port),
 909                            pf->stat_offsets_loaded,
 910                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 911         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 912                            pf->stat_offsets_loaded,
 913                            &osd->eth.rx_discards,
 914                            &nsd->eth.rx_discards);
 915         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 916                            I40E_GLPRT_UPRCL(hw->port),
 917                            pf->stat_offsets_loaded,
 918                            &osd->eth.rx_unicast,
 919                            &nsd->eth.rx_unicast);
 920         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 921                            I40E_GLPRT_MPRCL(hw->port),
 922                            pf->stat_offsets_loaded,
 923                            &osd->eth.rx_multicast,
 924                            &nsd->eth.rx_multicast);
 925         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 926                            I40E_GLPRT_BPRCL(hw->port),
 927                            pf->stat_offsets_loaded,
 928                            &osd->eth.rx_broadcast,
 929                            &nsd->eth.rx_broadcast);
 930         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 931                            I40E_GLPRT_UPTCL(hw->port),
 932                            pf->stat_offsets_loaded,
 933                            &osd->eth.tx_unicast,
 934                            &nsd->eth.tx_unicast);
 935         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 936                            I40E_GLPRT_MPTCL(hw->port),
 937                            pf->stat_offsets_loaded,
 938                            &osd->eth.tx_multicast,
 939                            &nsd->eth.tx_multicast);
 940         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 941                            I40E_GLPRT_BPTCL(hw->port),
 942                            pf->stat_offsets_loaded,
 943                            &osd->eth.tx_broadcast,
 944                            &nsd->eth.tx_broadcast);
 945
 946         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 947                            pf->stat_offsets_loaded,
 948                            &osd->tx_dropped_link_down,
 949                            &nsd->tx_dropped_link_down);
 950
 951         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 952                            pf->stat_offsets_loaded,
 953                            &osd->crc_errors, &nsd->crc_errors);
 954
 955         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 956                            pf->stat_offsets_loaded,
 957                            &osd->illegal_bytes, &nsd->illegal_bytes);
 958
 959         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 960                            pf->stat_offsets_loaded,
 961                            &osd->mac_local_faults,
 962                            &nsd->mac_local_faults);
 963         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 964                            pf->stat_offsets_loaded,
 965                            &osd->mac_remote_faults,
 966                            &nsd->mac_remote_faults);
 967
 968         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 969                            pf->stat_offsets_loaded,
 970                            &osd->rx_length_errors,
 971                            &nsd->rx_length_errors);
 972
 973         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 974                            pf->stat_offsets_loaded,
 975                            &osd->link_xon_rx, &nsd->link_xon_rx);
 976         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 977                            pf->stat_offsets_loaded,
 978                            &osd->link_xon_tx, &nsd->link_xon_tx);
 979         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 980                            pf->stat_offsets_loaded,
 981                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 982         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 983                            pf->stat_offsets_loaded,
 984                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
 985
 986         for (i = 0; i < 8; i++) {
 987                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 988                                    pf->stat_offsets_loaded,
 989                                    &osd->priority_xoff_rx[i],
 990                                    &nsd->priority_xoff_rx[i]);
 991                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 992                                    pf->stat_offsets_loaded,
 993                                    &osd->priority_xon_rx[i],
 994                                    &nsd->priority_xon_rx[i]);
 995                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
 996                                    pf->stat_offsets_loaded,
 997                                    &osd->priority_xon_tx[i],
 998                                    &nsd->priority_xon_tx[i]);
 999                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1000                                    pf->stat_offsets_loaded,
1001                                    &osd->priority_xoff_tx[i],
1002                                    &nsd->priority_xoff_tx[i]);
1003                 i40e_stat_update32(hw,
1004                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1005                                    pf->stat_offsets_loaded,
1006                                    &osd->priority_xon_2_xoff[i],
1007                                    &nsd->priority_xon_2_xoff[i]);
1008         }
1009
1010         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1011                            I40E_GLPRT_PRC64L(hw->port),
1012                            pf->stat_offsets_loaded,
1013                            &osd->rx_size_64, &nsd->rx_size_64);
1014         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1015                            I40E_GLPRT_PRC127L(hw->port),
1016                            pf->stat_offsets_loaded,
1017                            &osd->rx_size_127, &nsd->rx_size_127);
1018         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1019                            I40E_GLPRT_PRC255L(hw->port),
1020                            pf->stat_offsets_loaded,
1021                            &osd->rx_size_255, &nsd->rx_size_255);
1022         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1023                            I40E_GLPRT_PRC511L(hw->port),
1024                            pf->stat_offsets_loaded,
1025                            &osd->rx_size_511, &nsd->rx_size_511);
1026         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1027                            I40E_GLPRT_PRC1023L(hw->port),
1028                            pf->stat_offsets_loaded,
1029                            &osd->rx_size_1023, &nsd->rx_size_1023);
1030         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1031                            I40E_GLPRT_PRC1522L(hw->port),
1032                            pf->stat_offsets_loaded,
1033                            &osd->rx_size_1522, &nsd->rx_size_1522);
1034         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1035                            I40E_GLPRT_PRC9522L(hw->port),
1036                            pf->stat_offsets_loaded,
1037                            &osd->rx_size_big, &nsd->rx_size_big);
1038
1039         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1040                            I40E_GLPRT_PTC64L(hw->port),
1041                            pf->stat_offsets_loaded,
1042                            &osd->tx_size_64, &nsd->tx_size_64);
1043         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1044                            I40E_GLPRT_PTC127L(hw->port),
1045                            pf->stat_offsets_loaded,
1046                            &osd->tx_size_127, &nsd->tx_size_127);
1047         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1048                            I40E_GLPRT_PTC255L(hw->port),
1049                            pf->stat_offsets_loaded,
1050                            &osd->tx_size_255, &nsd->tx_size_255);
1051         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1052                            I40E_GLPRT_PTC511L(hw->port),
1053                            pf->stat_offsets_loaded,
1054                            &osd->tx_size_511, &nsd->tx_size_511);
1055         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1056                            I40E_GLPRT_PTC1023L(hw->port),
1057                            pf->stat_offsets_loaded,
1058                            &osd->tx_size_1023, &nsd->tx_size_1023);
1059         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1060                            I40E_GLPRT_PTC1522L(hw->port),
1061                            pf->stat_offsets_loaded,
1062                            &osd->tx_size_1522, &nsd->tx_size_1522);
1063         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1064                            I40E_GLPRT_PTC9522L(hw->port),
1065                            pf->stat_offsets_loaded,
1066                            &osd->tx_size_big, &nsd->tx_size_big);
1067
1068         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1069                            pf->stat_offsets_loaded,
1070                            &osd->rx_undersize, &nsd->rx_undersize);
1071         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1072                            pf->stat_offsets_loaded,
1073                            &osd->rx_fragments, &nsd->rx_fragments);
1074         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1075                            pf->stat_offsets_loaded,
1076                            &osd->rx_oversize, &nsd->rx_oversize);
1077         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1078                            pf->stat_offsets_loaded,
1079                            &osd->rx_jabber, &nsd->rx_jabber);
1080
1081         /* FDIR stats */
1082         i40e_stat_update32(hw,
1083                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1084                            pf->stat_offsets_loaded,
1085                            &osd->fd_atr_match, &nsd->fd_atr_match);
1086         i40e_stat_update32(hw,
1087                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1088                            pf->stat_offsets_loaded,
1089                            &osd->fd_sb_match, &nsd->fd_sb_match);
1090         i40e_stat_update32(hw,
1091                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1092                       pf->stat_offsets_loaded,
1093                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1094
1095         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1096         nsd->tx_lpi_status =
1097                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1098                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1099         nsd->rx_lpi_status =
1100                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1101                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1102         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1103                            pf->stat_offsets_loaded,
1104                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1105         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1106                            pf->stat_offsets_loaded,
1107                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1108
1109         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1110             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1111                 nsd->fd_sb_status = true;
1112         else
1113                 nsd->fd_sb_status = false;
1114
1115         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1116             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1117                 nsd->fd_atr_status = true;
1118         else
1119                 nsd->fd_atr_status = false;
1120
1121         pf->stat_offsets_loaded = true;
1122 }
1123
1124 /**
1125  * i40e_update_stats - Update the various statistics counters.
1126  * @vsi: the VSI to be updated
1127  *
1128  * Update the various stats for this VSI and its related entities.
1129  **/
1130 void i40e_update_stats(struct i40e_vsi *vsi)
1131 {
1132         struct i40e_pf *pf = vsi->back;
1133
1134         if (vsi == pf->vsi[pf->lan_vsi])
1135                 i40e_update_pf_stats(pf);
1136
1137         i40e_update_vsi_stats(vsi);
1138 #ifdef I40E_FCOE
1139         i40e_update_fcoe_stats(vsi);
1140 #endif
1141 }
1142
1143 /**
1144  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1145  * @vsi: the VSI to be searched
1146  * @macaddr: the MAC address
1147  * @vlan: the vlan
1148  * @is_vf: make sure its a VF filter, else doesn't matter
1149  * @is_netdev: make sure its a netdev filter, else doesn't matter
1150  *
1151  * Returns ptr to the filter object or NULL
1152  **/
1153 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1154                                                 u8 *macaddr, s16 vlan,
1155                                                 bool is_vf, bool is_netdev)
1156 {
1157         struct i40e_mac_filter *f;
1158
1159         if (!vsi || !macaddr)
1160                 return NULL;
1161
1162         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1163                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1164                     (vlan == f->vlan)    &&
1165                     (!is_vf || f->is_vf) &&
1166                     (!is_netdev || f->is_netdev))
1167                         return f;
1168         }
1169         return NULL;
1170 }
1171
1172 /**
1173  * i40e_find_mac - Find a mac addr in the macvlan filters list
1174  * @vsi: the VSI to be searched
1175  * @macaddr: the MAC address we are searching for
1176  * @is_vf: make sure its a VF filter, else doesn't matter
1177  * @is_netdev: make sure its a netdev filter, else doesn't matter
1178  *
1179  * Returns the first filter with the provided MAC address or NULL if
1180  * MAC address was not found
1181  **/
1182 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1183                                       bool is_vf, bool is_netdev)
1184 {
1185         struct i40e_mac_filter *f;
1186
1187         if (!vsi || !macaddr)
1188                 return NULL;
1189
1190         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1191                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1192                     (!is_vf || f->is_vf) &&
1193                     (!is_netdev || f->is_netdev))
1194                         return f;
1195         }
1196         return NULL;
1197 }
1198
1199 /**
1200  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1201  * @vsi: the VSI to be searched
1202  *
1203  * Returns true if VSI is in vlan mode or false otherwise
1204  **/
1205 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1206 {
1207         struct i40e_mac_filter *f;
1208
1209         /* Only -1 for all the filters denotes not in vlan mode
1210          * so we have to go through all the list in order to make sure
1211          */
1212         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1213                 if (f->vlan >= 0 || vsi->info.pvid)
1214                         return true;
1215         }
1216
1217         return false;
1218 }
1219
1220 /**
1221  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1222  * @vsi: the VSI to be searched
1223  * @macaddr: the mac address to be filtered
1224  * @is_vf: true if it is a VF
1225  * @is_netdev: true if it is a netdev
1226  *
1227  * Goes through all the macvlan filters and adds a
1228  * macvlan filter for each unique vlan that already exists
1229  *
1230  * Returns first filter found on success, else NULL
1231  **/
1232 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1233                                              bool is_vf, bool is_netdev)
1234 {
1235         struct i40e_mac_filter *f;
1236
1237         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1238                 if (vsi->info.pvid)
1239                         f->vlan = le16_to_cpu(vsi->info.pvid);
1240                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1241                                       is_vf, is_netdev)) {
1242                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1243                                              is_vf, is_netdev))
1244                                 return NULL;
1245                 }
1246         }
1247
1248         return list_first_entry_or_null(&vsi->mac_filter_list,
1249                                         struct i40e_mac_filter, list);
1250 }
1251
1252 /**
1253  * i40e_del_mac_all_vlan - Remove a MAC filter from all VLANS
1254  * @vsi: the VSI to be searched
1255  * @macaddr: the mac address to be removed
1256  * @is_vf: true if it is a VF
1257  * @is_netdev: true if it is a netdev
1258  *
1259  * Removes a given MAC address from a VSI, regardless of VLAN
1260  *
1261  * Returns 0 for success, or error
1262  **/
1263 int i40e_del_mac_all_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1264                           bool is_vf, bool is_netdev)
1265 {
1266         struct i40e_mac_filter *f = NULL;
1267         int changed = 0;
1268
1269         WARN(!spin_is_locked(&vsi->mac_filter_list_lock),
1270              "Missing mac_filter_list_lock\n");
1271         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1272                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1273                     (is_vf == f->is_vf) &&
1274                     (is_netdev == f->is_netdev)) {
1275                         f->counter--;
1276                         changed = 1;
1277                         if (f->counter == 0)
1278                                 f->state = I40E_FILTER_REMOVE;
1279                 }
1280         }
1281         if (changed) {
1282                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1283                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1284                 return 0;
1285         }
1286         return -ENOENT;
1287 }
1288
1289 /**
1290  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1291  * @vsi: the PF Main VSI - inappropriate for any other VSI
1292  * @macaddr: the MAC address
1293  *
1294  * Remove whatever filter the firmware set up so the driver can manage
1295  * its own filtering intelligently.
1296  **/
1297 static void i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1298 {
1299         struct i40e_aqc_remove_macvlan_element_data element;
1300         struct i40e_pf *pf = vsi->back;
1301
1302         /* Only appropriate for the PF main VSI */
1303         if (vsi->type != I40E_VSI_MAIN)
1304                 return;
1305
1306         memset(&element, 0, sizeof(element));
1307         ether_addr_copy(element.mac_addr, macaddr);
1308         element.vlan_tag = 0;
1309         /* Ignore error returns, some firmware does it this way... */
1310         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1311         i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1312
1313         memset(&element, 0, sizeof(element));
1314         ether_addr_copy(element.mac_addr, macaddr);
1315         element.vlan_tag = 0;
1316         /* ...and some firmware does it this way. */
1317         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1318                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1319         i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1320 }
1321
1322 /**
1323  * i40e_add_filter - Add a mac/vlan filter to the VSI
1324  * @vsi: the VSI to be searched
1325  * @macaddr: the MAC address
1326  * @vlan: the vlan
1327  * @is_vf: make sure its a VF filter, else doesn't matter
1328  * @is_netdev: make sure its a netdev filter, else doesn't matter
1329  *
1330  * Returns ptr to the filter object or NULL when no memory available.
1331  *
1332  * NOTE: This function is expected to be called with mac_filter_list_lock
1333  * being held.
1334  **/
1335 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1336                                         u8 *macaddr, s16 vlan,
1337                                         bool is_vf, bool is_netdev)
1338 {
1339         struct i40e_mac_filter *f;
1340         int changed = false;
1341
1342         if (!vsi || !macaddr)
1343                 return NULL;
1344
1345         /* Do not allow broadcast filter to be added since broadcast filter
1346          * is added as part of add VSI for any newly created VSI except
1347          * FDIR VSI
1348          */
1349         if (is_broadcast_ether_addr(macaddr))
1350                 return NULL;
1351
1352         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1353         if (!f) {
1354                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1355                 if (!f)
1356                         goto add_filter_out;
1357
1358                 ether_addr_copy(f->macaddr, macaddr);
1359                 f->vlan = vlan;
1360                 /* If we're in overflow promisc mode, set the state directly
1361                  * to failed, so we don't bother to try sending the filter
1362                  * to the hardware.
1363                  */
1364                 if (test_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state))
1365                         f->state = I40E_FILTER_FAILED;
1366                 else
1367                         f->state = I40E_FILTER_NEW;
1368                 changed = true;
1369                 INIT_LIST_HEAD(&f->list);
1370                 list_add_tail(&f->list, &vsi->mac_filter_list);
1371         }
1372
1373         /* increment counter and add a new flag if needed */
1374         if (is_vf) {
1375                 if (!f->is_vf) {
1376                         f->is_vf = true;
1377                         f->counter++;
1378                 }
1379         } else if (is_netdev) {
1380                 if (!f->is_netdev) {
1381                         f->is_netdev = true;
1382                         f->counter++;
1383                 }
1384         } else {
1385                 f->counter++;
1386         }
1387
1388         if (changed) {
1389                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1390                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1391         }
1392
1393 add_filter_out:
1394         return f;
1395 }
1396
1397 /**
1398  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1399  * @vsi: the VSI to be searched
1400  * @macaddr: the MAC address
1401  * @vlan: the vlan
1402  * @is_vf: make sure it's a VF filter, else doesn't matter
1403  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1404  *
1405  * NOTE: This function is expected to be called with mac_filter_list_lock
1406  * being held.
1407  * ANOTHER NOTE: This function MUST be called from within the context of
1408  * the "safe" variants of any list iterators, e.g. list_for_each_entry_safe()
1409  * instead of list_for_each_entry().
1410  **/
1411 void i40e_del_filter(struct i40e_vsi *vsi,
1412                      u8 *macaddr, s16 vlan,
1413                      bool is_vf, bool is_netdev)
1414 {
1415         struct i40e_mac_filter *f;
1416
1417         if (!vsi || !macaddr)
1418                 return;
1419
1420         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1421         if (!f || f->counter == 0)
1422                 return;
1423
1424         if (is_vf) {
1425                 if (f->is_vf) {
1426                         f->is_vf = false;
1427                         f->counter--;
1428                 }
1429         } else if (is_netdev) {
1430                 if (f->is_netdev) {
1431                         f->is_netdev = false;
1432                         f->counter--;
1433                 }
1434         } else {
1435                 /* make sure we don't remove a filter in use by VF or netdev */
1436                 int min_f = 0;
1437
1438                 min_f += (f->is_vf ? 1 : 0);
1439                 min_f += (f->is_netdev ? 1 : 0);
1440
1441                 if (f->counter > min_f)
1442                         f->counter--;
1443         }
1444
1445         /* counter == 0 tells sync_filters_subtask to
1446          * remove the filter from the firmware's list
1447          */
1448         if (f->counter == 0) {
1449                 if ((f->state == I40E_FILTER_FAILED) ||
1450                     (f->state == I40E_FILTER_NEW)) {
1451                         /* this one never got added by the FW. Just remove it,
1452                          * no need to sync anything.
1453                          */
1454                         list_del(&f->list);
1455                         kfree(f);
1456                 } else {
1457                         f->state = I40E_FILTER_REMOVE;
1458                         vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1459                         vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1460                 }
1461         }
1462 }
1463
1464 /**
1465  * i40e_set_mac - NDO callback to set mac address
1466  * @netdev: network interface device structure
1467  * @p: pointer to an address structure
1468  *
1469  * Returns 0 on success, negative on failure
1470  **/
1471 #ifdef I40E_FCOE
1472 int i40e_set_mac(struct net_device *netdev, void *p)
1473 #else
1474 static int i40e_set_mac(struct net_device *netdev, void *p)
1475 #endif
1476 {
1477         struct i40e_netdev_priv *np = netdev_priv(netdev);
1478         struct i40e_vsi *vsi = np->vsi;
1479         struct i40e_pf *pf = vsi->back;
1480         struct i40e_hw *hw = &pf->hw;
1481         struct sockaddr *addr = p;
1482
1483         if (!is_valid_ether_addr(addr->sa_data))
1484                 return -EADDRNOTAVAIL;
1485
1486         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1487                 netdev_info(netdev, "already using mac address %pM\n",
1488                             addr->sa_data);
1489                 return 0;
1490         }
1491
1492         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1493             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1494                 return -EADDRNOTAVAIL;
1495
1496         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1497                 netdev_info(netdev, "returning to hw mac address %pM\n",
1498                             hw->mac.addr);
1499         else
1500                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1501
1502         spin_lock_bh(&vsi->mac_filter_list_lock);
1503         i40e_del_mac_all_vlan(vsi, netdev->dev_addr, false, true);
1504         i40e_put_mac_in_vlan(vsi, addr->sa_data, false, true);
1505         spin_unlock_bh(&vsi->mac_filter_list_lock);
1506         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1507         if (vsi->type == I40E_VSI_MAIN) {
1508                 i40e_status ret;
1509
1510                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1511                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1512                                                 addr->sa_data, NULL);
1513                 if (ret)
1514                         netdev_info(netdev, "Ignoring error from firmware on LAA update, status %s, AQ ret %s\n",
1515                                     i40e_stat_str(hw, ret),
1516                                     i40e_aq_str(hw, hw->aq.asq_last_status));
1517         }
1518
1519         /* schedule our worker thread which will take care of
1520          * applying the new filter changes
1521          */
1522         i40e_service_event_schedule(vsi->back);
1523         return 0;
1524 }
1525
1526 /**
1527  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1528  * @vsi: the VSI being setup
1529  * @ctxt: VSI context structure
1530  * @enabled_tc: Enabled TCs bitmap
1531  * @is_add: True if called before Add VSI
1532  *
1533  * Setup VSI queue mapping for enabled traffic classes.
1534  **/
1535 #ifdef I40E_FCOE
1536 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1537                               struct i40e_vsi_context *ctxt,
1538                               u8 enabled_tc,
1539                               bool is_add)
1540 #else
1541 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1542                                      struct i40e_vsi_context *ctxt,
1543                                      u8 enabled_tc,
1544                                      bool is_add)
1545 #endif
1546 {
1547         struct i40e_pf *pf = vsi->back;
1548         u16 sections = 0;
1549         u8 netdev_tc = 0;
1550         u16 numtc = 0;
1551         u16 qcount;
1552         u8 offset;
1553         u16 qmap;
1554         int i;
1555         u16 num_tc_qps = 0;
1556
1557         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1558         offset = 0;
1559
1560         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1561                 /* Find numtc from enabled TC bitmap */
1562                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1563                         if (enabled_tc & BIT(i)) /* TC is enabled */
1564                                 numtc++;
1565                 }
1566                 if (!numtc) {
1567                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1568                         numtc = 1;
1569                 }
1570         } else {
1571                 /* At least TC0 is enabled in case of non-DCB case */
1572                 numtc = 1;
1573         }
1574
1575         vsi->tc_config.numtc = numtc;
1576         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1577         /* Number of queues per enabled TC */
1578         qcount = vsi->alloc_queue_pairs;
1579
1580         num_tc_qps = qcount / numtc;
1581         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1582
1583         /* Setup queue offset/count for all TCs for given VSI */
1584         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1585                 /* See if the given TC is enabled for the given VSI */
1586                 if (vsi->tc_config.enabled_tc & BIT(i)) {
1587                         /* TC is enabled */
1588                         int pow, num_qps;
1589
1590                         switch (vsi->type) {
1591                         case I40E_VSI_MAIN:
1592                                 qcount = min_t(int, pf->alloc_rss_size,
1593                                                num_tc_qps);
1594                                 break;
1595 #ifdef I40E_FCOE
1596                         case I40E_VSI_FCOE:
1597                                 qcount = num_tc_qps;
1598                                 break;
1599 #endif
1600                         case I40E_VSI_FDIR:
1601                         case I40E_VSI_SRIOV:
1602                         case I40E_VSI_VMDQ2:
1603                         default:
1604                                 qcount = num_tc_qps;
1605                                 WARN_ON(i != 0);
1606                                 break;
1607                         }
1608                         vsi->tc_config.tc_info[i].qoffset = offset;
1609                         vsi->tc_config.tc_info[i].qcount = qcount;
1610
1611                         /* find the next higher power-of-2 of num queue pairs */
1612                         num_qps = qcount;
1613                         pow = 0;
1614                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1615                                 pow++;
1616                                 num_qps >>= 1;
1617                         }
1618
1619                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1620                         qmap =
1621                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1622                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1623
1624                         offset += qcount;
1625                 } else {
1626                         /* TC is not enabled so set the offset to
1627                          * default queue and allocate one queue
1628                          * for the given TC.
1629                          */
1630                         vsi->tc_config.tc_info[i].qoffset = 0;
1631                         vsi->tc_config.tc_info[i].qcount = 1;
1632                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1633
1634                         qmap = 0;
1635                 }
1636                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1637         }
1638
1639         /* Set actual Tx/Rx queue pairs */
1640         vsi->num_queue_pairs = offset;
1641         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1642                 if (vsi->req_queue_pairs > 0)
1643                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1644                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1645                         vsi->num_queue_pairs = pf->num_lan_msix;
1646         }
1647
1648         /* Scheduler section valid can only be set for ADD VSI */
1649         if (is_add) {
1650                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1651
1652                 ctxt->info.up_enable_bits = enabled_tc;
1653         }
1654         if (vsi->type == I40E_VSI_SRIOV) {
1655                 ctxt->info.mapping_flags |=
1656                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1657                 for (i = 0; i < vsi->num_queue_pairs; i++)
1658                         ctxt->info.queue_mapping[i] =
1659                                                cpu_to_le16(vsi->base_queue + i);
1660         } else {
1661                 ctxt->info.mapping_flags |=
1662                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1663                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1664         }
1665         ctxt->info.valid_sections |= cpu_to_le16(sections);
1666 }
1667
1668 /**
1669  * i40e_set_rx_mode - NDO callback to set the netdev filters
1670  * @netdev: network interface device structure
1671  **/
1672 #ifdef I40E_FCOE
1673 void i40e_set_rx_mode(struct net_device *netdev)
1674 #else
1675 static void i40e_set_rx_mode(struct net_device *netdev)
1676 #endif
1677 {
1678         struct i40e_netdev_priv *np = netdev_priv(netdev);
1679         struct i40e_mac_filter *f, *ftmp;
1680         struct i40e_vsi *vsi = np->vsi;
1681         struct netdev_hw_addr *uca;
1682         struct netdev_hw_addr *mca;
1683         struct netdev_hw_addr *ha;
1684
1685         spin_lock_bh(&vsi->mac_filter_list_lock);
1686
1687         /* add addr if not already in the filter list */
1688         netdev_for_each_uc_addr(uca, netdev) {
1689                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1690                         if (i40e_is_vsi_in_vlan(vsi))
1691                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1692                                                      false, true);
1693                         else
1694                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1695                                                 false, true);
1696                 }
1697         }
1698
1699         netdev_for_each_mc_addr(mca, netdev) {
1700                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1701                         if (i40e_is_vsi_in_vlan(vsi))
1702                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1703                                                      false, true);
1704                         else
1705                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1706                                                 false, true);
1707                 }
1708         }
1709
1710         /* remove filter if not in netdev list */
1711         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1712
1713                 if (!f->is_netdev)
1714                         continue;
1715
1716                 netdev_for_each_mc_addr(mca, netdev)
1717                         if (ether_addr_equal(mca->addr, f->macaddr))
1718                                 goto bottom_of_search_loop;
1719
1720                 netdev_for_each_uc_addr(uca, netdev)
1721                         if (ether_addr_equal(uca->addr, f->macaddr))
1722                                 goto bottom_of_search_loop;
1723
1724                 for_each_dev_addr(netdev, ha)
1725                         if (ether_addr_equal(ha->addr, f->macaddr))
1726                                 goto bottom_of_search_loop;
1727
1728                 /* f->macaddr wasn't found in uc, mc, or ha list so delete it */
1729                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1730
1731 bottom_of_search_loop:
1732                 continue;
1733         }
1734         spin_unlock_bh(&vsi->mac_filter_list_lock);
1735
1736         /* check for other flag changes */
1737         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1738                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1739                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1740         }
1741
1742         /* schedule our worker thread which will take care of
1743          * applying the new filter changes
1744          */
1745         i40e_service_event_schedule(vsi->back);
1746 }
1747
1748 /**
1749  * i40e_undo_del_filter_entries - Undo the changes made to MAC filter entries
1750  * @vsi: pointer to vsi struct
1751  * @from: Pointer to list which contains MAC filter entries - changes to
1752  *        those entries needs to be undone.
1753  *
1754  * MAC filter entries from list were slated to be removed from device.
1755  **/
1756 static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
1757                                          struct list_head *from)
1758 {
1759         struct i40e_mac_filter *f, *ftmp;
1760
1761         list_for_each_entry_safe(f, ftmp, from, list) {
1762                 /* Move the element back into MAC filter list*/
1763                 list_move_tail(&f->list, &vsi->mac_filter_list);
1764         }
1765 }
1766
1767 /**
1768  * i40e_update_filter_state - Update filter state based on return data
1769  * from firmware
1770  * @count: Number of filters added
1771  * @add_list: return data from fw
1772  * @head: pointer to first filter in current batch
1773  * @aq_err: status from fw
1774  *
1775  * MAC filter entries from list were slated to be added to device. Returns
1776  * number of successful filters. Note that 0 does NOT mean success!
1777  **/
1778 static int
1779 i40e_update_filter_state(int count,
1780                          struct i40e_aqc_add_macvlan_element_data *add_list,
1781                          struct i40e_mac_filter *add_head, int aq_err)
1782 {
1783         int retval = 0;
1784         int i;
1785
1786
1787         if (!aq_err) {
1788                 retval = count;
1789                 /* Everything's good, mark all filters active. */
1790                 for (i = 0; i < count ; i++) {
1791                         add_head->state = I40E_FILTER_ACTIVE;
1792                         add_head = list_next_entry(add_head, list);
1793                 }
1794         } else if (aq_err == I40E_AQ_RC_ENOSPC) {
1795                 /* Device ran out of filter space. Check the return value
1796                  * for each filter to see which ones are active.
1797                  */
1798                 for (i = 0; i < count ; i++) {
1799                         if (add_list[i].match_method ==
1800                             I40E_AQC_MM_ERR_NO_RES) {
1801                                 add_head->state = I40E_FILTER_FAILED;
1802                         } else {
1803                                 add_head->state = I40E_FILTER_ACTIVE;
1804                                 retval++;
1805                         }
1806                         add_head = list_next_entry(add_head, list);
1807                 }
1808         } else {
1809                 /* Some other horrible thing happened, fail all filters */
1810                 retval = 0;
1811                 for (i = 0; i < count ; i++) {
1812                         add_head->state = I40E_FILTER_FAILED;
1813                         add_head = list_next_entry(add_head, list);
1814                 }
1815         }
1816         return retval;
1817 }
1818
1819 /**
1820  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1821  * @vsi: ptr to the VSI
1822  *
1823  * Push any outstanding VSI filter changes through the AdminQ.
1824  *
1825  * Returns 0 or error value
1826  **/
1827 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1828 {
1829         struct i40e_mac_filter *f, *ftmp, *add_head = NULL;
1830         struct list_head tmp_add_list, tmp_del_list;
1831         struct i40e_hw *hw = &vsi->back->hw;
1832         bool promisc_changed = false;
1833         char vsi_name[16] = "PF";
1834         int filter_list_len = 0;
1835         u32 changed_flags = 0;
1836         i40e_status aq_ret = 0;
1837         int retval = 0;
1838         struct i40e_pf *pf;
1839         int num_add = 0;
1840         int num_del = 0;
1841         int aq_err = 0;
1842         u16 cmd_flags;
1843         int list_size;
1844         int fcnt;
1845
1846         /* empty array typed pointers, kcalloc later */
1847         struct i40e_aqc_add_macvlan_element_data *add_list;
1848         struct i40e_aqc_remove_macvlan_element_data *del_list;
1849
1850         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1851                 usleep_range(1000, 2000);
1852         pf = vsi->back;
1853
1854         if (vsi->netdev) {
1855                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1856                 vsi->current_netdev_flags = vsi->netdev->flags;
1857         }
1858
1859         INIT_LIST_HEAD(&tmp_add_list);
1860         INIT_LIST_HEAD(&tmp_del_list);
1861
1862         if (vsi->type == I40E_VSI_SRIOV)
1863                 snprintf(vsi_name, sizeof(vsi_name) - 1, "VF %d", vsi->vf_id);
1864         else if (vsi->type != I40E_VSI_MAIN)
1865                 snprintf(vsi_name, sizeof(vsi_name) - 1, "vsi %d", vsi->seid);
1866
1867         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1868                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1869
1870                 spin_lock_bh(&vsi->mac_filter_list_lock);
1871                 /* Create a list of filters to delete. */
1872                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1873                         if (f->state == I40E_FILTER_REMOVE) {
1874                                 WARN_ON(f->counter != 0);
1875                                 /* Move the element into temporary del_list */
1876                                 list_move_tail(&f->list, &tmp_del_list);
1877                                 vsi->active_filters--;
1878                         }
1879                         if (f->state == I40E_FILTER_NEW) {
1880                                 WARN_ON(f->counter == 0);
1881                                 /* Move the element into temporary add_list */
1882                                 list_move_tail(&f->list, &tmp_add_list);
1883                         }
1884                 }
1885                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1886         }
1887
1888         /* Now process 'del_list' outside the lock */
1889         if (!list_empty(&tmp_del_list)) {
1890                 filter_list_len = hw->aq.asq_buf_size /
1891                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1892                 list_size = filter_list_len *
1893                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1894                 del_list = kzalloc(list_size, GFP_ATOMIC);
1895                 if (!del_list) {
1896                         /* Undo VSI's MAC filter entry element updates */
1897                         spin_lock_bh(&vsi->mac_filter_list_lock);
1898                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1899                         spin_unlock_bh(&vsi->mac_filter_list_lock);
1900                         retval = -ENOMEM;
1901                         goto out;
1902                 }
1903
1904                 list_for_each_entry_safe(f, ftmp, &tmp_del_list, list) {
1905                         cmd_flags = 0;
1906
1907                         /* add to delete list */
1908                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1909                         if (f->vlan == I40E_VLAN_ANY) {
1910                                 del_list[num_del].vlan_tag = 0;
1911                                 cmd_flags |= I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1912                         } else {
1913                                 del_list[num_del].vlan_tag =
1914                                         cpu_to_le16((u16)(f->vlan));
1915                         }
1916
1917                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1918                         del_list[num_del].flags = cmd_flags;
1919                         num_del++;
1920
1921                         /* flush a full buffer */
1922                         if (num_del == filter_list_len) {
1923                                 aq_ret = i40e_aq_remove_macvlan(hw, vsi->seid,
1924                                                                 del_list,
1925                                                                 num_del, NULL);
1926                                 aq_err = hw->aq.asq_last_status;
1927                                 num_del = 0;
1928                                 memset(del_list, 0, list_size);
1929
1930                                 /* Explicitly ignore and do not report when
1931                                  * firmware returns ENOENT.
1932                                  */
1933                                 if (aq_ret && !(aq_err == I40E_AQ_RC_ENOENT)) {
1934                                         retval = -EIO;
1935                                         dev_info(&pf->pdev->dev,
1936                                                  "ignoring delete macvlan error on %s, err %s, aq_err %s\n",
1937                                                  vsi_name,
1938                                                  i40e_stat_str(hw, aq_ret),
1939                                                  i40e_aq_str(hw, aq_err));
1940                                 }
1941                         }
1942                         /* Release memory for MAC filter entries which were
1943                          * synced up with HW.
1944                          */
1945                         list_del(&f->list);
1946                         kfree(f);
1947                 }
1948
1949                 if (num_del) {
1950                         aq_ret = i40e_aq_remove_macvlan(hw, vsi->seid, del_list,
1951                                                         num_del, NULL);
1952                         aq_err = hw->aq.asq_last_status;
1953                         num_del = 0;
1954
1955                         /* Explicitly ignore and do not report when firmware
1956                          * returns ENOENT.
1957                          */
1958                         if (aq_ret && !(aq_err == I40E_AQ_RC_ENOENT)) {
1959                                 retval = -EIO;
1960                                 dev_info(&pf->pdev->dev,
1961                                          "ignoring delete macvlan error on %s, err %s aq_err %s\n",
1962                                          vsi_name,
1963                                          i40e_stat_str(hw, aq_ret),
1964                                          i40e_aq_str(hw, aq_err));
1965                         }
1966                 }
1967
1968                 kfree(del_list);
1969                 del_list = NULL;
1970         }
1971
1972         if (!list_empty(&tmp_add_list)) {
1973                 /* Do all the adds now. */
1974                 filter_list_len = hw->aq.asq_buf_size /
1975                                sizeof(struct i40e_aqc_add_macvlan_element_data);
1976                 list_size = filter_list_len *
1977                                sizeof(struct i40e_aqc_add_macvlan_element_data);
1978                 add_list = kzalloc(list_size, GFP_ATOMIC);
1979                 if (!add_list) {
1980                         retval = -ENOMEM;
1981                         goto out;
1982                 }
1983                 num_add = 0;
1984                 list_for_each_entry(f, &tmp_add_list, list) {
1985                         if (test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1986                                      &vsi->state)) {
1987                                 f->state = I40E_FILTER_FAILED;
1988                                 continue;
1989                         }
1990                         /* add to add array */
1991                         if (num_add == 0)
1992                                 add_head = f;
1993                         cmd_flags = 0;
1994                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
1995                         if (f->vlan == I40E_VLAN_ANY) {
1996                                 add_list[num_add].vlan_tag = 0;
1997                                 cmd_flags |= I40E_AQC_MACVLAN_ADD_IGNORE_VLAN;
1998                         } else {
1999                                 add_list[num_add].vlan_tag =
2000                                         cpu_to_le16((u16)(f->vlan));
2001                         }
2002                         add_list[num_add].queue_number = 0;
2003                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
2004                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
2005                         num_add++;
2006
2007                         /* flush a full buffer */
2008                         if (num_add == filter_list_len) {
2009                                 aq_ret = i40e_aq_add_macvlan(hw, vsi->seid,
2010                                                              add_list, num_add,
2011                                                              NULL);
2012                                 aq_err = hw->aq.asq_last_status;
2013                                 fcnt = i40e_update_filter_state(num_add,
2014                                                                 add_list,
2015                                                                 add_head,
2016                                                                 aq_ret);
2017                                 vsi->active_filters += fcnt;
2018
2019                                 if (fcnt != num_add) {
2020                                         promisc_changed = true;
2021                                         set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2022                                                 &vsi->state);
2023                                         vsi->promisc_threshold =
2024                                                 (vsi->active_filters * 3) / 4;
2025                                         dev_warn(&pf->pdev->dev,
2026                                                  "Error %s adding RX filters on %s, promiscuous mode forced on\n",
2027                                                  i40e_aq_str(hw, aq_err),
2028                                                  vsi_name);
2029                                 }
2030                                 memset(add_list, 0, list_size);
2031                                 num_add = 0;
2032                         }
2033                 }
2034                 if (num_add) {
2035                         aq_ret = i40e_aq_add_macvlan(hw, vsi->seid,
2036                                                      add_list, num_add, NULL);
2037                         aq_err = hw->aq.asq_last_status;
2038                         fcnt = i40e_update_filter_state(num_add, add_list,
2039                                                         add_head, aq_ret);
2040                         vsi->active_filters += fcnt;
2041                         if (fcnt != num_add) {
2042                                 promisc_changed = true;
2043                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2044                                         &vsi->state);
2045                                 vsi->promisc_threshold =
2046                                                 (vsi->active_filters * 3) / 4;
2047                                 dev_warn(&pf->pdev->dev,
2048                                          "Error %s adding RX filters on %s, promiscuous mode forced on\n",
2049                                          i40e_aq_str(hw, aq_err), vsi_name);
2050                         }
2051                 }
2052                 /* Now move all of the filters from the temp add list back to
2053                  * the VSI's list.
2054                  */
2055                 spin_lock_bh(&vsi->mac_filter_list_lock);
2056                 list_for_each_entry_safe(f, ftmp, &tmp_add_list, list) {
2057                         list_move_tail(&f->list, &vsi->mac_filter_list);
2058                 }
2059                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2060                 kfree(add_list);
2061                 add_list = NULL;
2062         }
2063
2064         /* Check to see if we can drop out of overflow promiscuous mode. */
2065         if (test_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state) &&
2066             (vsi->active_filters < vsi->promisc_threshold)) {
2067                 int failed_count = 0;
2068                 /* See if we have any failed filters. We can't drop out of
2069                  * promiscuous until these have all been deleted.
2070                  */
2071                 spin_lock_bh(&vsi->mac_filter_list_lock);
2072                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2073                         if (f->state == I40E_FILTER_FAILED)
2074                                 failed_count++;
2075                 }
2076                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2077                 if (!failed_count) {
2078                         dev_info(&pf->pdev->dev,
2079                                  "filter logjam cleared on %s, leaving overflow promiscuous mode\n",
2080                                  vsi_name);
2081                         clear_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
2082                         promisc_changed = true;
2083                         vsi->promisc_threshold = 0;
2084                 }
2085         }
2086
2087         /* if the VF is not trusted do not do promisc */
2088         if ((vsi->type == I40E_VSI_SRIOV) && !pf->vf[vsi->vf_id].trusted) {
2089                 clear_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
2090                 goto out;
2091         }
2092
2093         /* check for changes in promiscuous modes */
2094         if (changed_flags & IFF_ALLMULTI) {
2095                 bool cur_multipromisc;
2096
2097                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
2098                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
2099                                                                vsi->seid,
2100                                                                cur_multipromisc,
2101                                                                NULL);
2102                 if (aq_ret) {
2103                         retval = i40e_aq_rc_to_posix(aq_ret,
2104                                                      hw->aq.asq_last_status);
2105                         dev_info(&pf->pdev->dev,
2106                                  "set multi promisc failed on %s, err %s aq_err %s\n",
2107                                  vsi_name,
2108                                  i40e_stat_str(hw, aq_ret),
2109                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2110                 }
2111         }
2112         if ((changed_flags & IFF_PROMISC) ||
2113             (promisc_changed &&
2114              test_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state))) {
2115                 bool cur_promisc;
2116
2117                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
2118                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2119                                         &vsi->state));
2120                 if ((vsi->type == I40E_VSI_MAIN) &&
2121                     (pf->lan_veb != I40E_NO_VEB) &&
2122                     !(pf->flags & I40E_FLAG_MFP_ENABLED)) {
2123                         /* set defport ON for Main VSI instead of true promisc
2124                          * this way we will get all unicast/multicast and VLAN
2125                          * promisc behavior but will not get VF or VMDq traffic
2126                          * replicated on the Main VSI.
2127                          */
2128                         if (pf->cur_promisc != cur_promisc) {
2129                                 pf->cur_promisc = cur_promisc;
2130                                 if (cur_promisc)
2131                                         aq_ret =
2132                                               i40e_aq_set_default_vsi(hw,
2133                                                                       vsi->seid,
2134                                                                       NULL);
2135                                 else
2136                                         aq_ret =
2137                                             i40e_aq_clear_default_vsi(hw,
2138                                                                       vsi->seid,
2139                                                                       NULL);
2140                                 if (aq_ret) {
2141                                         retval = i40e_aq_rc_to_posix(aq_ret,
2142                                                         hw->aq.asq_last_status);
2143                                         dev_info(&pf->pdev->dev,
2144                                                  "Set default VSI failed on %s, err %s, aq_err %s\n",
2145                                                  vsi_name,
2146                                                  i40e_stat_str(hw, aq_ret),
2147                                                  i40e_aq_str(hw,
2148                                                      hw->aq.asq_last_status));
2149                                 }
2150                         }
2151                 } else {
2152                         aq_ret = i40e_aq_set_vsi_unicast_promiscuous(
2153                                                           hw,
2154                                                           vsi->seid,
2155                                                           cur_promisc, NULL,
2156                                                           true);
2157                         if (aq_ret) {
2158                                 retval =
2159                                 i40e_aq_rc_to_posix(aq_ret,
2160                                                     hw->aq.asq_last_status);
2161                                 dev_info(&pf->pdev->dev,
2162                                          "set unicast promisc failed on %s, err %s, aq_err %s\n",
2163                                          vsi_name,
2164                                          i40e_stat_str(hw, aq_ret),
2165                                          i40e_aq_str(hw,
2166                                                      hw->aq.asq_last_status));
2167                         }
2168                         aq_ret = i40e_aq_set_vsi_multicast_promiscuous(
2169                                                           hw,
2170                                                           vsi->seid,
2171                                                           cur_promisc, NULL);
2172                         if (aq_ret) {
2173                                 retval =
2174                                 i40e_aq_rc_to_posix(aq_ret,
2175                                                     hw->aq.asq_last_status);
2176                                 dev_info(&pf->pdev->dev,
2177                                          "set multicast promisc failed on %s, err %s, aq_err %s\n",
2178                                          vsi_name,
2179                                          i40e_stat_str(hw, aq_ret),
2180                                          i40e_aq_str(hw,
2181                                                      hw->aq.asq_last_status));
2182                         }
2183                 }
2184                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
2185                                                    vsi->seid,
2186                                                    cur_promisc, NULL);
2187                 if (aq_ret) {
2188                         retval = i40e_aq_rc_to_posix(aq_ret,
2189                                                      pf->hw.aq.asq_last_status);
2190                         dev_info(&pf->pdev->dev,
2191                                  "set brdcast promisc failed, err %s, aq_err %s\n",
2192                                          i40e_stat_str(hw, aq_ret),
2193                                          i40e_aq_str(hw,
2194                                                      hw->aq.asq_last_status));
2195                 }
2196         }
2197 out:
2198         /* if something went wrong then set the changed flag so we try again */
2199         if (retval)
2200                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2201
2202         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2203         return retval;
2204 }
2205
2206 /**
2207  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2208  * @pf: board private structure
2209  **/
2210 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2211 {
2212         int v;
2213
2214         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2215                 return;
2216         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2217
2218         for (v = 0; v < pf->num_alloc_vsi; v++) {
2219                 if (pf->vsi[v] &&
2220                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED)) {
2221                         int ret = i40e_sync_vsi_filters(pf->vsi[v]);
2222
2223                         if (ret) {
2224                                 /* come back and try again later */
2225                                 pf->flags |= I40E_FLAG_FILTER_SYNC;
2226                                 break;
2227                         }
2228                 }
2229         }
2230 }
2231
2232 /**
2233  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2234  * @netdev: network interface device structure
2235  * @new_mtu: new value for maximum frame size
2236  *
2237  * Returns 0 on success, negative on failure
2238  **/
2239 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2240 {
2241         struct i40e_netdev_priv *np = netdev_priv(netdev);
2242         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2243         struct i40e_vsi *vsi = np->vsi;
2244
2245         /* MTU < 68 is an error and causes problems on some kernels */
2246         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2247                 return -EINVAL;
2248
2249         netdev_info(netdev, "changing MTU from %d to %d\n",
2250                     netdev->mtu, new_mtu);
2251         netdev->mtu = new_mtu;
2252         if (netif_running(netdev))
2253                 i40e_vsi_reinit_locked(vsi);
2254         i40e_notify_client_of_l2_param_changes(vsi);
2255         return 0;
2256 }
2257
2258 /**
2259  * i40e_ioctl - Access the hwtstamp interface
2260  * @netdev: network interface device structure
2261  * @ifr: interface request data
2262  * @cmd: ioctl command
2263  **/
2264 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2265 {
2266         struct i40e_netdev_priv *np = netdev_priv(netdev);
2267         struct i40e_pf *pf = np->vsi->back;
2268
2269         switch (cmd) {
2270         case SIOCGHWTSTAMP:
2271                 return i40e_ptp_get_ts_config(pf, ifr);
2272         case SIOCSHWTSTAMP:
2273                 return i40e_ptp_set_ts_config(pf, ifr);
2274         default:
2275                 return -EOPNOTSUPP;
2276         }
2277 }
2278
2279 /**
2280  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2281  * @vsi: the vsi being adjusted
2282  **/
2283 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2284 {
2285         struct i40e_vsi_context ctxt;
2286         i40e_status ret;
2287
2288         if ((vsi->info.valid_sections &
2289              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2290             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2291                 return;  /* already enabled */
2292
2293         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2294         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2295                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2296
2297         ctxt.seid = vsi->seid;
2298         ctxt.info = vsi->info;
2299         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2300         if (ret) {
2301                 dev_info(&vsi->back->pdev->dev,
2302                          "update vlan stripping failed, err %s aq_err %s\n",
2303                          i40e_stat_str(&vsi->back->hw, ret),
2304                          i40e_aq_str(&vsi->back->hw,
2305                                      vsi->back->hw.aq.asq_last_status));
2306         }
2307 }
2308
2309 /**
2310  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2311  * @vsi: the vsi being adjusted
2312  **/
2313 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2314 {
2315         struct i40e_vsi_context ctxt;
2316         i40e_status ret;
2317
2318         if ((vsi->info.valid_sections &
2319              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2320             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2321              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2322                 return;  /* already disabled */
2323
2324         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2325         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2326                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2327
2328         ctxt.seid = vsi->seid;
2329         ctxt.info = vsi->info;
2330         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2331         if (ret) {
2332                 dev_info(&vsi->back->pdev->dev,
2333                          "update vlan stripping failed, err %s aq_err %s\n",
2334                          i40e_stat_str(&vsi->back->hw, ret),
2335                          i40e_aq_str(&vsi->back->hw,
2336                                      vsi->back->hw.aq.asq_last_status));
2337         }
2338 }
2339
2340 /**
2341  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2342  * @netdev: network interface to be adjusted
2343  * @features: netdev features to test if VLAN offload is enabled or not
2344  **/
2345 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2346 {
2347         struct i40e_netdev_priv *np = netdev_priv(netdev);
2348         struct i40e_vsi *vsi = np->vsi;
2349
2350         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2351                 i40e_vlan_stripping_enable(vsi);
2352         else
2353                 i40e_vlan_stripping_disable(vsi);
2354 }
2355
2356 /**
2357  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2358  * @vsi: the vsi being configured
2359  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2360  **/
2361 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2362 {
2363         struct i40e_mac_filter *f, *ftmp, *add_f;
2364         bool is_netdev, is_vf;
2365
2366         is_vf = (vsi->type == I40E_VSI_SRIOV);
2367         is_netdev = !!(vsi->netdev);
2368
2369         /* Locked once because all functions invoked below iterates list*/
2370         spin_lock_bh(&vsi->mac_filter_list_lock);
2371
2372         if (is_netdev) {
2373                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2374                                         is_vf, is_netdev);
2375                 if (!add_f) {
2376                         dev_info(&vsi->back->pdev->dev,
2377                                  "Could not add vlan filter %d for %pM\n",
2378                                  vid, vsi->netdev->dev_addr);
2379                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2380                         return -ENOMEM;
2381                 }
2382         }
2383
2384         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
2385                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2386                 if (!add_f) {
2387                         dev_info(&vsi->back->pdev->dev,
2388                                  "Could not add vlan filter %d for %pM\n",
2389                                  vid, f->macaddr);
2390                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2391                         return -ENOMEM;
2392                 }
2393         }
2394
2395         /* Now if we add a vlan tag, make sure to check if it is the first
2396          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2397          * with 0, so we now accept untagged and specified tagged traffic
2398          * (and not all tags along with untagged)
2399          */
2400         if (vid > 0) {
2401                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2402                                                   I40E_VLAN_ANY,
2403                                                   is_vf, is_netdev)) {
2404                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2405                                         I40E_VLAN_ANY, is_vf, is_netdev);
2406                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2407                                                 is_vf, is_netdev);
2408                         if (!add_f) {
2409                                 dev_info(&vsi->back->pdev->dev,
2410                                          "Could not add filter 0 for %pM\n",
2411                                          vsi->netdev->dev_addr);
2412                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2413                                 return -ENOMEM;
2414                         }
2415                 }
2416         }
2417
2418         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2419         if (vid > 0 && !vsi->info.pvid) {
2420                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
2421                         if (!i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2422                                               is_vf, is_netdev))
2423                                 continue;
2424                         i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2425                                         is_vf, is_netdev);
2426                         add_f = i40e_add_filter(vsi, f->macaddr,
2427                                                 0, is_vf, is_netdev);
2428                         if (!add_f) {
2429                                 dev_info(&vsi->back->pdev->dev,
2430                                          "Could not add filter 0 for %pM\n",
2431                                         f->macaddr);
2432                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2433                                 return -ENOMEM;
2434                         }
2435                 }
2436         }
2437
2438         spin_unlock_bh(&vsi->mac_filter_list_lock);
2439
2440         /* schedule our worker thread which will take care of
2441          * applying the new filter changes
2442          */
2443         i40e_service_event_schedule(vsi->back);
2444         return 0;
2445 }
2446
2447 /**
2448  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2449  * @vsi: the vsi being configured
2450  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2451  *
2452  * Return: 0 on success or negative otherwise
2453  **/
2454 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2455 {
2456         struct net_device *netdev = vsi->netdev;
2457         struct i40e_mac_filter *f, *ftmp, *add_f;
2458         bool is_vf, is_netdev;
2459         int filter_count = 0;
2460
2461         is_vf = (vsi->type == I40E_VSI_SRIOV);
2462         is_netdev = !!(netdev);
2463
2464         /* Locked once because all functions invoked below iterates list */
2465         spin_lock_bh(&vsi->mac_filter_list_lock);
2466
2467         if (is_netdev)
2468                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2469
2470         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
2471                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2472
2473         /* go through all the filters for this VSI and if there is only
2474          * vid == 0 it means there are no other filters, so vid 0 must
2475          * be replaced with -1. This signifies that we should from now
2476          * on accept any traffic (with any tag present, or untagged)
2477          */
2478         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2479                 if (is_netdev) {
2480                         if (f->vlan &&
2481                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2482                                 filter_count++;
2483                 }
2484
2485                 if (f->vlan)
2486                         filter_count++;
2487         }
2488
2489         if (!filter_count && is_netdev) {
2490                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2491                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2492                                     is_vf, is_netdev);
2493                 if (!f) {
2494                         dev_info(&vsi->back->pdev->dev,
2495                                  "Could not add filter %d for %pM\n",
2496                                  I40E_VLAN_ANY, netdev->dev_addr);
2497                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2498                         return -ENOMEM;
2499                 }
2500         }
2501
2502         if (!filter_count) {
2503                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
2504                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2505                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2506                                                 is_vf, is_netdev);
2507                         if (!add_f) {
2508                                 dev_info(&vsi->back->pdev->dev,
2509                                          "Could not add filter %d for %pM\n",
2510                                          I40E_VLAN_ANY, f->macaddr);
2511                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2512                                 return -ENOMEM;
2513                         }
2514                 }
2515         }
2516
2517         spin_unlock_bh(&vsi->mac_filter_list_lock);
2518
2519         /* schedule our worker thread which will take care of
2520          * applying the new filter changes
2521          */
2522         i40e_service_event_schedule(vsi->back);
2523         return 0;
2524 }
2525
2526 /**
2527  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2528  * @netdev: network interface to be adjusted
2529  * @vid: vlan id to be added
2530  *
2531  * net_device_ops implementation for adding vlan ids
2532  **/
2533 #ifdef I40E_FCOE
2534 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2535                          __always_unused __be16 proto, u16 vid)
2536 #else
2537 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2538                                 __always_unused __be16 proto, u16 vid)
2539 #endif
2540 {
2541         struct i40e_netdev_priv *np = netdev_priv(netdev);
2542         struct i40e_vsi *vsi = np->vsi;
2543         int ret = 0;
2544
2545         if (vid > 4095)
2546                 return -EINVAL;
2547
2548         /* If the network stack called us with vid = 0 then
2549          * it is asking to receive priority tagged packets with
2550          * vlan id 0.  Our HW receives them by default when configured
2551          * to receive untagged packets so there is no need to add an
2552          * extra filter for vlan 0 tagged packets.
2553          */
2554         if (vid)
2555                 ret = i40e_vsi_add_vlan(vsi, vid);
2556
2557         if (!ret && (vid < VLAN_N_VID))
2558                 set_bit(vid, vsi->active_vlans);
2559
2560         return ret;
2561 }
2562
2563 /**
2564  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2565  * @netdev: network interface to be adjusted
2566  * @vid: vlan id to be removed
2567  *
2568  * net_device_ops implementation for removing vlan ids
2569  **/
2570 #ifdef I40E_FCOE
2571 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2572                           __always_unused __be16 proto, u16 vid)
2573 #else
2574 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2575                                  __always_unused __be16 proto, u16 vid)
2576 #endif
2577 {
2578         struct i40e_netdev_priv *np = netdev_priv(netdev);
2579         struct i40e_vsi *vsi = np->vsi;
2580
2581         /* return code is ignored as there is nothing a user
2582          * can do about failure to remove and a log message was
2583          * already printed from the other function
2584          */
2585         i40e_vsi_kill_vlan(vsi, vid);
2586
2587         clear_bit(vid, vsi->active_vlans);
2588
2589         return 0;
2590 }
2591
2592 /**
2593  * i40e_macaddr_init - explicitly write the mac address filters
2594  *
2595  * @vsi: pointer to the vsi
2596  * @macaddr: the MAC address
2597  *
2598  * This is needed when the macaddr has been obtained by other
2599  * means than the default, e.g., from Open Firmware or IDPROM.
2600  * Returns 0 on success, negative on failure
2601  **/
2602 static int i40e_macaddr_init(struct i40e_vsi *vsi, u8 *macaddr)
2603 {
2604         int ret;
2605         struct i40e_aqc_add_macvlan_element_data element;
2606
2607         ret = i40e_aq_mac_address_write(&vsi->back->hw,
2608                                         I40E_AQC_WRITE_TYPE_LAA_WOL,
2609                                         macaddr, NULL);
2610         if (ret) {
2611                 dev_info(&vsi->back->pdev->dev,
2612                          "Addr change for VSI failed: %d\n", ret);
2613                 return -EADDRNOTAVAIL;
2614         }
2615
2616         memset(&element, 0, sizeof(element));
2617         ether_addr_copy(element.mac_addr, macaddr);
2618         element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
2619         ret = i40e_aq_add_macvlan(&vsi->back->hw, vsi->seid, &element, 1, NULL);
2620         if (ret) {
2621                 dev_info(&vsi->back->pdev->dev,
2622                          "add filter failed err %s aq_err %s\n",
2623                          i40e_stat_str(&vsi->back->hw, ret),
2624                          i40e_aq_str(&vsi->back->hw,
2625                                      vsi->back->hw.aq.asq_last_status));
2626         }
2627         return ret;
2628 }
2629
2630 /**
2631  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2632  * @vsi: the vsi being brought back up
2633  **/
2634 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2635 {
2636         u16 vid;
2637
2638         if (!vsi->netdev)
2639                 return;
2640
2641         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2642
2643         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2644                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2645                                      vid);
2646 }
2647
2648 /**
2649  * i40e_vsi_add_pvid - Add pvid for the VSI
2650  * @vsi: the vsi being adjusted
2651  * @vid: the vlan id to set as a PVID
2652  **/
2653 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2654 {
2655         struct i40e_vsi_context ctxt;
2656         i40e_status ret;
2657
2658         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2659         vsi->info.pvid = cpu_to_le16(vid);
2660         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2661                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2662                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2663
2664         ctxt.seid = vsi->seid;
2665         ctxt.info = vsi->info;
2666         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2667         if (ret) {
2668                 dev_info(&vsi->back->pdev->dev,
2669                          "add pvid failed, err %s aq_err %s\n",
2670                          i40e_stat_str(&vsi->back->hw, ret),
2671                          i40e_aq_str(&vsi->back->hw,
2672                                      vsi->back->hw.aq.asq_last_status));
2673                 return -ENOENT;
2674         }
2675
2676         return 0;
2677 }
2678
2679 /**
2680  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2681  * @vsi: the vsi being adjusted
2682  *
2683  * Just use the vlan_rx_register() service to put it back to normal
2684  **/
2685 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2686 {
2687         i40e_vlan_stripping_disable(vsi);
2688
2689         vsi->info.pvid = 0;
2690 }
2691
2692 /**
2693  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2694  * @vsi: ptr to the VSI
2695  *
2696  * If this function returns with an error, then it's possible one or
2697  * more of the rings is populated (while the rest are not).  It is the
2698  * callers duty to clean those orphaned rings.
2699  *
2700  * Return 0 on success, negative on failure
2701  **/
2702 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2703 {
2704         int i, err = 0;
2705
2706         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2707                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2708
2709         return err;
2710 }
2711
2712 /**
2713  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2714  * @vsi: ptr to the VSI
2715  *
2716  * Free VSI's transmit software resources
2717  **/
2718 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2719 {
2720         int i;
2721
2722         if (!vsi->tx_rings)
2723                 return;
2724
2725         for (i = 0; i < vsi->num_queue_pairs; i++)
2726                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2727                         i40e_free_tx_resources(vsi->tx_rings[i]);
2728 }
2729
2730 /**
2731  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2732  * @vsi: ptr to the VSI
2733  *
2734  * If this function returns with an error, then it's possible one or
2735  * more of the rings is populated (while the rest are not).  It is the
2736  * callers duty to clean those orphaned rings.
2737  *
2738  * Return 0 on success, negative on failure
2739  **/
2740 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2741 {
2742         int i, err = 0;
2743
2744         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2745                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2746 #ifdef I40E_FCOE
2747         i40e_fcoe_setup_ddp_resources(vsi);
2748 #endif
2749         return err;
2750 }
2751
2752 /**
2753  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2754  * @vsi: ptr to the VSI
2755  *
2756  * Free all receive software resources
2757  **/
2758 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2759 {
2760         int i;
2761
2762         if (!vsi->rx_rings)
2763                 return;
2764
2765         for (i = 0; i < vsi->num_queue_pairs; i++)
2766                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2767                         i40e_free_rx_resources(vsi->rx_rings[i]);
2768 #ifdef I40E_FCOE
2769         i40e_fcoe_free_ddp_resources(vsi);
2770 #endif
2771 }
2772
2773 /**
2774  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2775  * @ring: The Tx ring to configure
2776  *
2777  * This enables/disables XPS for a given Tx descriptor ring
2778  * based on the TCs enabled for the VSI that ring belongs to.
2779  **/
2780 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2781 {
2782         struct i40e_vsi *vsi = ring->vsi;
2783         cpumask_var_t mask;
2784
2785         if (!ring->q_vector || !ring->netdev)
2786                 return;
2787
2788         /* Single TC mode enable XPS */
2789         if (vsi->tc_config.numtc <= 1) {
2790                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2791                         netif_set_xps_queue(ring->netdev,
2792                                             &ring->q_vector->affinity_mask,
2793                                             ring->queue_index);
2794         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2795                 /* Disable XPS to allow selection based on TC */
2796                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2797                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2798                 free_cpumask_var(mask);
2799         }
2800
2801         /* schedule our worker thread which will take care of
2802          * applying the new filter changes
2803          */
2804         i40e_service_event_schedule(vsi->back);
2805 }
2806
2807 /**
2808  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2809  * @ring: The Tx ring to configure
2810  *
2811  * Configure the Tx descriptor ring in the HMC context.
2812  **/
2813 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2814 {
2815         struct i40e_vsi *vsi = ring->vsi;
2816         u16 pf_q = vsi->base_queue + ring->queue_index;
2817         struct i40e_hw *hw = &vsi->back->hw;
2818         struct i40e_hmc_obj_txq tx_ctx;
2819         i40e_status err = 0;
2820         u32 qtx_ctl = 0;
2821
2822         /* some ATR related tx ring init */
2823         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2824                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2825                 ring->atr_count = 0;
2826         } else {
2827                 ring->atr_sample_rate = 0;
2828         }
2829
2830         /* configure XPS */
2831         i40e_config_xps_tx_ring(ring);
2832
2833         /* clear the context structure first */
2834         memset(&tx_ctx, 0, sizeof(tx_ctx));
2835
2836         tx_ctx.new_context = 1;
2837         tx_ctx.base = (ring->dma / 128);
2838         tx_ctx.qlen = ring->count;
2839         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2840                                                I40E_FLAG_FD_ATR_ENABLED));
2841 #ifdef I40E_FCOE
2842         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2843 #endif
2844         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2845         /* FDIR VSI tx ring can still use RS bit and writebacks */
2846         if (vsi->type != I40E_VSI_FDIR)
2847                 tx_ctx.head_wb_ena = 1;
2848         tx_ctx.head_wb_addr = ring->dma +
2849                               (ring->count * sizeof(struct i40e_tx_desc));
2850
2851         /* As part of VSI creation/update, FW allocates certain
2852          * Tx arbitration queue sets for each TC enabled for
2853          * the VSI. The FW returns the handles to these queue
2854          * sets as part of the response buffer to Add VSI,
2855          * Update VSI, etc. AQ commands. It is expected that
2856          * these queue set handles be associated with the Tx
2857          * queues by the driver as part of the TX queue context
2858          * initialization. This has to be done regardless of
2859          * DCB as by default everything is mapped to TC0.
2860          */
2861         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2862         tx_ctx.rdylist_act = 0;
2863
2864         /* clear the context in the HMC */
2865         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2866         if (err) {
2867                 dev_info(&vsi->back->pdev->dev,
2868                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2869                          ring->queue_index, pf_q, err);
2870                 return -ENOMEM;
2871         }
2872
2873         /* set the context in the HMC */
2874         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2875         if (err) {
2876                 dev_info(&vsi->back->pdev->dev,
2877                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2878                          ring->queue_index, pf_q, err);
2879                 return -ENOMEM;
2880         }
2881
2882         /* Now associate this queue with this PCI function */
2883         if (vsi->type == I40E_VSI_VMDQ2) {
2884                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2885                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2886                            I40E_QTX_CTL_VFVM_INDX_MASK;
2887         } else {
2888                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2889         }
2890
2891         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2892                     I40E_QTX_CTL_PF_INDX_MASK);
2893         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2894         i40e_flush(hw);
2895
2896         /* cache tail off for easier writes later */
2897         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2898
2899         return 0;
2900 }
2901
2902 /**
2903  * i40e_configure_rx_ring - Configure a receive ring context
2904  * @ring: The Rx ring to configure
2905  *
2906  * Configure the Rx descriptor ring in the HMC context.
2907  **/
2908 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2909 {
2910         struct i40e_vsi *vsi = ring->vsi;
2911         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2912         u16 pf_q = vsi->base_queue + ring->queue_index;
2913         struct i40e_hw *hw = &vsi->back->hw;
2914         struct i40e_hmc_obj_rxq rx_ctx;
2915         i40e_status err = 0;
2916
2917         ring->state = 0;
2918
2919         /* clear the context structure first */
2920         memset(&rx_ctx, 0, sizeof(rx_ctx));
2921
2922         ring->rx_buf_len = vsi->rx_buf_len;
2923
2924         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2925
2926         rx_ctx.base = (ring->dma / 128);
2927         rx_ctx.qlen = ring->count;
2928
2929         /* use 32 byte descriptors */
2930         rx_ctx.dsize = 1;
2931
2932         /* descriptor type is always zero
2933          * rx_ctx.dtype = 0;
2934          */
2935         rx_ctx.hsplit_0 = 0;
2936
2937         rx_ctx.rxmax = min_t(u16, vsi->max_frame, chain_len * ring->rx_buf_len);
2938         if (hw->revision_id == 0)
2939                 rx_ctx.lrxqthresh = 0;
2940         else
2941                 rx_ctx.lrxqthresh = 2;
2942         rx_ctx.crcstrip = 1;
2943         rx_ctx.l2tsel = 1;
2944         /* this controls whether VLAN is stripped from inner headers */
2945         rx_ctx.showiv = 0;
2946 #ifdef I40E_FCOE
2947         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2948 #endif
2949         /* set the prefena field to 1 because the manual says to */
2950         rx_ctx.prefena = 1;
2951
2952         /* clear the context in the HMC */
2953         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2954         if (err) {
2955                 dev_info(&vsi->back->pdev->dev,
2956                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2957                          ring->queue_index, pf_q, err);
2958                 return -ENOMEM;
2959         }
2960
2961         /* set the context in the HMC */
2962         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2963         if (err) {
2964                 dev_info(&vsi->back->pdev->dev,
2965                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2966                          ring->queue_index, pf_q, err);
2967                 return -ENOMEM;
2968         }
2969
2970         /* cache tail for quicker writes, and clear the reg before use */
2971         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2972         writel(0, ring->tail);
2973
2974         i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
2975
2976         return 0;
2977 }
2978
2979 /**
2980  * i40e_vsi_configure_tx - Configure the VSI for Tx
2981  * @vsi: VSI structure describing this set of rings and resources
2982  *
2983  * Configure the Tx VSI for operation.
2984  **/
2985 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2986 {
2987         int err = 0;
2988         u16 i;
2989
2990         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2991                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2992
2993         return err;
2994 }
2995
2996 /**
2997  * i40e_vsi_configure_rx - Configure the VSI for Rx
2998  * @vsi: the VSI being configured
2999  *
3000  * Configure the Rx VSI for operation.
3001  **/
3002 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
3003 {
3004         int err = 0;
3005         u16 i;
3006
3007         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
3008                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
3009                                + ETH_FCS_LEN + VLAN_HLEN;
3010         else
3011                 vsi->max_frame = I40E_RXBUFFER_2048;
3012
3013         vsi->rx_buf_len = I40E_RXBUFFER_2048;
3014
3015 #ifdef I40E_FCOE
3016         /* setup rx buffer for FCoE */
3017         if ((vsi->type == I40E_VSI_FCOE) &&
3018             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
3019                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
3020                 vsi->max_frame = I40E_RXBUFFER_3072;
3021         }
3022
3023 #endif /* I40E_FCOE */
3024         /* round up for the chip's needs */
3025         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
3026                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
3027
3028         /* set up individual rings */
3029         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3030                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
3031
3032         return err;
3033 }
3034
3035 /**
3036  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
3037  * @vsi: ptr to the VSI
3038  **/
3039 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
3040 {
3041         struct i40e_ring *tx_ring, *rx_ring;
3042         u16 qoffset, qcount;
3043         int i, n;
3044
3045         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
3046                 /* Reset the TC information */
3047                 for (i = 0; i < vsi->num_queue_pairs; i++) {
3048                         rx_ring = vsi->rx_rings[i];
3049                         tx_ring = vsi->tx_rings[i];
3050                         rx_ring->dcb_tc = 0;
3051                         tx_ring->dcb_tc = 0;
3052                 }
3053         }
3054
3055         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
3056                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
3057                         continue;
3058
3059                 qoffset = vsi->tc_config.tc_info[n].qoffset;
3060                 qcount = vsi->tc_config.tc_info[n].qcount;
3061                 for (i = qoffset; i < (qoffset + qcount); i++) {
3062                         rx_ring = vsi->rx_rings[i];
3063                         tx_ring = vsi->tx_rings[i];
3064                         rx_ring->dcb_tc = n;
3065                         tx_ring->dcb_tc = n;
3066                 }
3067         }
3068 }
3069
3070 /**
3071  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
3072  * @vsi: ptr to the VSI
3073  **/
3074 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
3075 {
3076         struct i40e_pf *pf = vsi->back;
3077         int err;
3078
3079         if (vsi->netdev)
3080                 i40e_set_rx_mode(vsi->netdev);
3081
3082         if (!!(pf->flags & I40E_FLAG_PF_MAC)) {
3083                 err = i40e_macaddr_init(vsi, pf->hw.mac.addr);
3084                 if (err) {
3085                         dev_warn(&pf->pdev->dev,
3086                                  "could not set up macaddr; err %d\n", err);
3087                 }
3088         }
3089 }
3090
3091 /**
3092  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
3093  * @vsi: Pointer to the targeted VSI
3094  *
3095  * This function replays the hlist on the hw where all the SB Flow Director
3096  * filters were saved.
3097  **/
3098 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
3099 {
3100         struct i40e_fdir_filter *filter;
3101         struct i40e_pf *pf = vsi->back;
3102         struct hlist_node *node;
3103
3104         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3105                 return;
3106
3107         hlist_for_each_entry_safe(filter, node,
3108                                   &pf->fdir_filter_list, fdir_node) {
3109                 i40e_add_del_fdir(vsi, filter, true);
3110         }
3111 }
3112
3113 /**
3114  * i40e_vsi_configure - Set up the VSI for action
3115  * @vsi: the VSI being configured
3116  **/
3117 static int i40e_vsi_configure(struct i40e_vsi *vsi)
3118 {
3119         int err;
3120
3121         i40e_set_vsi_rx_mode(vsi);
3122         i40e_restore_vlan(vsi);
3123         i40e_vsi_config_dcb_rings(vsi);
3124         err = i40e_vsi_configure_tx(vsi);
3125         if (!err)
3126                 err = i40e_vsi_configure_rx(vsi);
3127
3128         return err;
3129 }
3130
3131 /**
3132  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
3133  * @vsi: the VSI being configured
3134  **/
3135 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
3136 {
3137         struct i40e_pf *pf = vsi->back;
3138         struct i40e_hw *hw = &pf->hw;
3139         u16 vector;
3140         int i, q;
3141         u32 qp;
3142
3143         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
3144          * and PFINT_LNKLSTn registers, e.g.:
3145          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
3146          */
3147         qp = vsi->base_queue;
3148         vector = vsi->base_vector;
3149         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3150                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
3151
3152                 q_vector->itr_countdown = ITR_COUNTDOWN_START;
3153                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[i]->rx_itr_setting);
3154                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
3155                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3156                      q_vector->rx.itr);
3157                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[i]->tx_itr_setting);
3158                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
3159                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3160                      q_vector->tx.itr);
3161                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
3162                      INTRL_USEC_TO_REG(vsi->int_rate_limit));
3163
3164                 /* Linked list for the queuepairs assigned to this vector */
3165                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
3166                 for (q = 0; q < q_vector->num_ringpairs; q++) {
3167                         u32 val;
3168
3169                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3170                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
3171                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
3172                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
3173                               (I40E_QUEUE_TYPE_TX
3174                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
3175
3176                         wr32(hw, I40E_QINT_RQCTL(qp), val);
3177
3178                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3179                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
3180                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3181                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
3182                               (I40E_QUEUE_TYPE_RX
3183                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3184
3185                         /* Terminate the linked list */
3186                         if (q == (q_vector->num_ringpairs - 1))
3187                                 val |= (I40E_QUEUE_END_OF_LIST
3188                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3189
3190                         wr32(hw, I40E_QINT_TQCTL(qp), val);
3191                         qp++;
3192                 }
3193         }
3194
3195         i40e_flush(hw);
3196 }
3197
3198 /**
3199  * i40e_enable_misc_int_causes - enable the non-queue interrupts
3200  * @hw: ptr to the hardware info
3201  **/
3202 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
3203 {
3204         struct i40e_hw *hw = &pf->hw;
3205         u32 val;
3206
3207         /* clear things first */
3208         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
3209         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
3210
3211         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
3212               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
3213               I40E_PFINT_ICR0_ENA_GRST_MASK          |
3214               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
3215               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
3216               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
3217               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
3218               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3219
3220         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
3221                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3222
3223         if (pf->flags & I40E_FLAG_PTP)
3224                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3225
3226         wr32(hw, I40E_PFINT_ICR0_ENA, val);
3227
3228         /* SW_ITR_IDX = 0, but don't change INTENA */
3229         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
3230                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
3231
3232         /* OTHER_ITR_IDX = 0 */
3233         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
3234 }
3235
3236 /**
3237  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3238  * @vsi: the VSI being configured
3239  **/
3240 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3241 {
3242         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3243         struct i40e_pf *pf = vsi->back;
3244         struct i40e_hw *hw = &pf->hw;
3245         u32 val;
3246
3247         /* set the ITR configuration */
3248         q_vector->itr_countdown = ITR_COUNTDOWN_START;
3249         q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[0]->rx_itr_setting);
3250         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3251         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3252         q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[0]->tx_itr_setting);
3253         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3254         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3255
3256         i40e_enable_misc_int_causes(pf);
3257
3258         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3259         wr32(hw, I40E_PFINT_LNKLST0, 0);
3260
3261         /* Associate the queue pair to the vector and enable the queue int */
3262         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3263               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3264               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3265
3266         wr32(hw, I40E_QINT_RQCTL(0), val);
3267
3268         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3269               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3270               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3271
3272         wr32(hw, I40E_QINT_TQCTL(0), val);
3273         i40e_flush(hw);
3274 }
3275
3276 /**
3277  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3278  * @pf: board private structure
3279  **/
3280 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3281 {
3282         struct i40e_hw *hw = &pf->hw;
3283
3284         wr32(hw, I40E_PFINT_DYN_CTL0,
3285              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3286         i40e_flush(hw);
3287 }
3288
3289 /**
3290  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3291  * @pf: board private structure
3292  * @clearpba: true when all pending interrupt events should be cleared
3293  **/
3294 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf, bool clearpba)
3295 {
3296         struct i40e_hw *hw = &pf->hw;
3297         u32 val;
3298
3299         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3300               (clearpba ? I40E_PFINT_DYN_CTL0_CLEARPBA_MASK : 0) |
3301               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3302
3303         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3304         i40e_flush(hw);
3305 }
3306
3307 /**
3308  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3309  * @irq: interrupt number
3310  * @data: pointer to a q_vector
3311  **/
3312 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3313 {
3314         struct i40e_q_vector *q_vector = data;
3315
3316         if (!q_vector->tx.ring && !q_vector->rx.ring)
3317                 return IRQ_HANDLED;
3318
3319         napi_schedule_irqoff(&q_vector->napi);
3320
3321         return IRQ_HANDLED;
3322 }
3323
3324 /**
3325  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3326  * @vsi: the VSI being configured
3327  * @basename: name for the vector
3328  *
3329  * Allocates MSI-X vectors and requests interrupts from the kernel.
3330  **/
3331 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3332 {
3333         int q_vectors = vsi->num_q_vectors;
3334         struct i40e_pf *pf = vsi->back;
3335         int base = vsi->base_vector;
3336         int rx_int_idx = 0;
3337         int tx_int_idx = 0;
3338         int vector, err;
3339
3340         for (vector = 0; vector < q_vectors; vector++) {
3341                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3342
3343                 if (q_vector->tx.ring && q_vector->rx.ring) {
3344                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3345                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3346                         tx_int_idx++;
3347                 } else if (q_vector->rx.ring) {
3348                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3349                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3350                 } else if (q_vector->tx.ring) {
3351                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3352                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3353                 } else {
3354                         /* skip this unused q_vector */
3355                         continue;
3356                 }
3357                 err = request_irq(pf->msix_entries[base + vector].vector,
3358                                   vsi->irq_handler,
3359                                   0,
3360                                   q_vector->name,
3361                                   q_vector);
3362                 if (err) {
3363                         dev_info(&pf->pdev->dev,
3364                                  "MSIX request_irq failed, error: %d\n", err);
3365                         goto free_queue_irqs;
3366                 }
3367                 /* assign the mask for this irq */
3368                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3369                                       &q_vector->affinity_mask);
3370         }
3371
3372         vsi->irqs_ready = true;
3373         return 0;
3374
3375 free_queue_irqs:
3376         while (vector) {
3377                 vector--;
3378                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3379                                       NULL);
3380                 free_irq(pf->msix_entries[base + vector].vector,
3381                          &(vsi->q_vectors[vector]));
3382         }
3383         return err;
3384 }
3385
3386 /**
3387  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3388  * @vsi: the VSI being un-configured
3389  **/
3390 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3391 {
3392         struct i40e_pf *pf = vsi->back;
3393         struct i40e_hw *hw = &pf->hw;
3394         int base = vsi->base_vector;
3395         int i;
3396
3397         for (i = 0; i < vsi->num_queue_pairs; i++) {
3398                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3399                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3400         }
3401
3402         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3403                 for (i = vsi->base_vector;
3404                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3405                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3406
3407                 i40e_flush(hw);
3408                 for (i = 0; i < vsi->num_q_vectors; i++)
3409                         synchronize_irq(pf->msix_entries[i + base].vector);
3410         } else {
3411                 /* Legacy and MSI mode - this stops all interrupt handling */
3412                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3413                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3414                 i40e_flush(hw);
3415                 synchronize_irq(pf->pdev->irq);
3416         }
3417 }
3418
3419 /**
3420  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3421  * @vsi: the VSI being configured
3422  **/
3423 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3424 {
3425         struct i40e_pf *pf = vsi->back;
3426         int i;
3427
3428         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3429                 for (i = 0; i < vsi->num_q_vectors; i++)
3430                         i40e_irq_dynamic_enable(vsi, i);
3431         } else {
3432                 i40e_irq_dynamic_enable_icr0(pf, true);
3433         }
3434
3435         i40e_flush(&pf->hw);
3436         return 0;
3437 }
3438
3439 /**
3440  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3441  * @pf: board private structure
3442  **/
3443 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3444 {
3445         /* Disable ICR 0 */
3446         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3447         i40e_flush(&pf->hw);
3448 }
3449
3450 /**
3451  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3452  * @irq: interrupt number
3453  * @data: pointer to a q_vector
3454  *
3455  * This is the handler used for all MSI/Legacy interrupts, and deals
3456  * with both queue and non-queue interrupts.  This is also used in
3457  * MSIX mode to handle the non-queue interrupts.
3458  **/
3459 static irqreturn_t i40e_intr(int irq, void *data)
3460 {
3461         struct i40e_pf *pf = (struct i40e_pf *)data;
3462         struct i40e_hw *hw = &pf->hw;
3463         irqreturn_t ret = IRQ_NONE;
3464         u32 icr0, icr0_remaining;
3465         u32 val, ena_mask;
3466
3467         icr0 = rd32(hw, I40E_PFINT_ICR0);
3468         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3469
3470         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3471         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3472                 goto enable_intr;
3473
3474         /* if interrupt but no bits showing, must be SWINT */
3475         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3476             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3477                 pf->sw_int_count++;
3478
3479         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3480             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3481                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3482                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3483                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3484         }
3485
3486         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3487         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3488                 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
3489                 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3490
3491                 /* We do not have a way to disarm Queue causes while leaving
3492                  * interrupt enabled for all other causes, ideally
3493                  * interrupt should be disabled while we are in NAPI but
3494                  * this is not a performance path and napi_schedule()
3495                  * can deal with rescheduling.
3496                  */
3497                 if (!test_bit(__I40E_DOWN, &pf->state))
3498                         napi_schedule_irqoff(&q_vector->napi);
3499         }
3500
3501         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3502                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3503                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3504                 i40e_debug(&pf->hw, I40E_DEBUG_NVM, "AdminQ event\n");
3505         }
3506
3507         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3508                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3509                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3510         }
3511
3512         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3513                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3514                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3515         }
3516
3517         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3518                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3519                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3520                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3521                 val = rd32(hw, I40E_GLGEN_RSTAT);
3522                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3523                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3524                 if (val == I40E_RESET_CORER) {
3525                         pf->corer_count++;
3526                 } else if (val == I40E_RESET_GLOBR) {
3527                         pf->globr_count++;
3528                 } else if (val == I40E_RESET_EMPR) {
3529                         pf->empr_count++;
3530                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3531                 }
3532         }
3533
3534         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3535                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3536                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3537                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3538                          rd32(hw, I40E_PFHMC_ERRORINFO),
3539                          rd32(hw, I40E_PFHMC_ERRORDATA));
3540         }
3541
3542         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3543                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3544
3545                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3546                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3547                         i40e_ptp_tx_hwtstamp(pf);
3548                 }
3549         }
3550
3551         /* If a critical error is pending we have no choice but to reset the
3552          * device.
3553          * Report and mask out any remaining unexpected interrupts.
3554          */
3555         icr0_remaining = icr0 & ena_mask;
3556         if (icr0_remaining) {
3557                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3558                          icr0_remaining);
3559                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3560                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3561                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3562                         dev_info(&pf->pdev->dev, "device will be reset\n");
3563                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3564                         i40e_service_event_schedule(pf);
3565                 }
3566                 ena_mask &= ~icr0_remaining;
3567         }
3568         ret = IRQ_HANDLED;
3569
3570 enable_intr:
3571         /* re-enable interrupt causes */
3572         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3573         if (!test_bit(__I40E_DOWN, &pf->state)) {
3574                 i40e_service_event_schedule(pf);
3575                 i40e_irq_dynamic_enable_icr0(pf, false);
3576         }
3577
3578         return ret;
3579 }
3580
3581 /**
3582  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3583  * @tx_ring:  tx ring to clean
3584  * @budget:   how many cleans we're allowed
3585  *
3586  * Returns true if there's any budget left (e.g. the clean is finished)
3587  **/
3588 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3589 {
3590         struct i40e_vsi *vsi = tx_ring->vsi;
3591         u16 i = tx_ring->next_to_clean;
3592         struct i40e_tx_buffer *tx_buf;
3593         struct i40e_tx_desc *tx_desc;
3594
3595         tx_buf = &tx_ring->tx_bi[i];
3596         tx_desc = I40E_TX_DESC(tx_ring, i);
3597         i -= tx_ring->count;
3598
3599         do {
3600                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3601
3602                 /* if next_to_watch is not set then there is no work pending */
3603                 if (!eop_desc)
3604                         break;
3605
3606                 /* prevent any other reads prior to eop_desc */
3607                 read_barrier_depends();
3608
3609                 /* if the descriptor isn't done, no work yet to do */
3610                 if (!(eop_desc->cmd_type_offset_bsz &
3611                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3612                         break;
3613
3614                 /* clear next_to_watch to prevent false hangs */
3615                 tx_buf->next_to_watch = NULL;
3616
3617                 tx_desc->buffer_addr = 0;
3618                 tx_desc->cmd_type_offset_bsz = 0;
3619                 /* move past filter desc */
3620                 tx_buf++;
3621                 tx_desc++;
3622                 i++;
3623                 if (unlikely(!i)) {
3624                         i -= tx_ring->count;
3625                         tx_buf = tx_ring->tx_bi;
3626                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3627                 }
3628                 /* unmap skb header data */
3629                 dma_unmap_single(tx_ring->dev,
3630                                  dma_unmap_addr(tx_buf, dma),
3631                                  dma_unmap_len(tx_buf, len),
3632                                  DMA_TO_DEVICE);
3633                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3634                         kfree(tx_buf->raw_buf);
3635
3636                 tx_buf->raw_buf = NULL;
3637                 tx_buf->tx_flags = 0;
3638                 tx_buf->next_to_watch = NULL;
3639                 dma_unmap_len_set(tx_buf, len, 0);
3640                 tx_desc->buffer_addr = 0;
3641                 tx_desc->cmd_type_offset_bsz = 0;
3642
3643                 /* move us past the eop_desc for start of next FD desc */
3644                 tx_buf++;
3645                 tx_desc++;
3646                 i++;
3647                 if (unlikely(!i)) {
3648                         i -= tx_ring->count;
3649                         tx_buf = tx_ring->tx_bi;
3650                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3651                 }
3652
3653                 /* update budget accounting */
3654                 budget--;
3655         } while (likely(budget));
3656
3657         i += tx_ring->count;
3658         tx_ring->next_to_clean = i;
3659
3660         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
3661                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3662
3663         return budget > 0;
3664 }
3665
3666 /**
3667  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3668  * @irq: interrupt number
3669  * @data: pointer to a q_vector
3670  **/
3671 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3672 {
3673         struct i40e_q_vector *q_vector = data;
3674         struct i40e_vsi *vsi;
3675
3676         if (!q_vector->tx.ring)
3677                 return IRQ_HANDLED;
3678
3679         vsi = q_vector->tx.ring->vsi;
3680         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3681
3682         return IRQ_HANDLED;
3683 }
3684
3685 /**
3686  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3687  * @vsi: the VSI being configured
3688  * @v_idx: vector index
3689  * @qp_idx: queue pair index
3690  **/
3691 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3692 {
3693         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3694         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3695         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3696
3697         tx_ring->q_vector = q_vector;
3698         tx_ring->next = q_vector->tx.ring;
3699         q_vector->tx.ring = tx_ring;
3700         q_vector->tx.count++;
3701
3702         rx_ring->q_vector = q_vector;
3703         rx_ring->next = q_vector->rx.ring;
3704         q_vector->rx.ring = rx_ring;
3705         q_vector->rx.count++;
3706 }
3707
3708 /**
3709  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3710  * @vsi: the VSI being configured
3711  *
3712  * This function maps descriptor rings to the queue-specific vectors
3713  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3714  * one vector per queue pair, but on a constrained vector budget, we
3715  * group the queue pairs as "efficiently" as possible.
3716  **/
3717 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3718 {
3719         int qp_remaining = vsi->num_queue_pairs;
3720         int q_vectors = vsi->num_q_vectors;
3721         int num_ringpairs;
3722         int v_start = 0;
3723         int qp_idx = 0;
3724
3725         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3726          * group them so there are multiple queues per vector.
3727          * It is also important to go through all the vectors available to be
3728          * sure that if we don't use all the vectors, that the remaining vectors
3729          * are cleared. This is especially important when decreasing the
3730          * number of queues in use.
3731          */
3732         for (; v_start < q_vectors; v_start++) {
3733                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3734
3735                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3736
3737                 q_vector->num_ringpairs = num_ringpairs;
3738
3739                 q_vector->rx.count = 0;
3740                 q_vector->tx.count = 0;
3741                 q_vector->rx.ring = NULL;
3742                 q_vector->tx.ring = NULL;
3743
3744                 while (num_ringpairs--) {
3745                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3746                         qp_idx++;
3747                         qp_remaining--;
3748                 }
3749         }
3750 }
3751
3752 /**
3753  * i40e_vsi_request_irq - Request IRQ from the OS
3754  * @vsi: the VSI being configured
3755  * @basename: name for the vector
3756  **/
3757 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3758 {
3759         struct i40e_pf *pf = vsi->back;
3760         int err;
3761
3762         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3763                 err = i40e_vsi_request_irq_msix(vsi, basename);
3764         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3765                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3766                                   pf->int_name, pf);
3767         else
3768                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3769                                   pf->int_name, pf);
3770
3771         if (err)
3772                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3773
3774         return err;
3775 }
3776
3777 #ifdef CONFIG_NET_POLL_CONTROLLER
3778 /**
3779  * i40e_netpoll - A Polling 'interrupt' handler
3780  * @netdev: network interface device structure
3781  *
3782  * This is used by netconsole to send skbs without having to re-enable
3783  * interrupts.  It's not called while the normal interrupt routine is executing.
3784  **/
3785 #ifdef I40E_FCOE
3786 void i40e_netpoll(struct net_device *netdev)
3787 #else
3788 static void i40e_netpoll(struct net_device *netdev)
3789 #endif
3790 {
3791         struct i40e_netdev_priv *np = netdev_priv(netdev);
3792         struct i40e_vsi *vsi = np->vsi;
3793         struct i40e_pf *pf = vsi->back;
3794         int i;
3795
3796         /* if interface is down do nothing */
3797         if (test_bit(__I40E_DOWN, &vsi->state))
3798                 return;
3799
3800         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3801                 for (i = 0; i < vsi->num_q_vectors; i++)
3802                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3803         } else {
3804                 i40e_intr(pf->pdev->irq, netdev);
3805         }
3806 }
3807 #endif
3808
3809 /**
3810  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3811  * @pf: the PF being configured
3812  * @pf_q: the PF queue
3813  * @enable: enable or disable state of the queue
3814  *
3815  * This routine will wait for the given Tx queue of the PF to reach the
3816  * enabled or disabled state.
3817  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3818  * multiple retries; else will return 0 in case of success.
3819  **/
3820 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3821 {
3822         int i;
3823         u32 tx_reg;
3824
3825         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3826                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3827                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3828                         break;
3829
3830                 usleep_range(10, 20);
3831         }
3832         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3833                 return -ETIMEDOUT;
3834
3835         return 0;
3836 }
3837
3838 /**
3839  * i40e_vsi_control_tx - Start or stop a VSI's rings
3840  * @vsi: the VSI being configured
3841  * @enable: start or stop the rings
3842  **/
3843 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3844 {
3845         struct i40e_pf *pf = vsi->back;
3846         struct i40e_hw *hw = &pf->hw;
3847         int i, j, pf_q, ret = 0;
3848         u32 tx_reg;
3849
3850         pf_q = vsi->base_queue;
3851         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3852
3853                 /* warn the TX unit of coming changes */
3854                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3855                 if (!enable)
3856                         usleep_range(10, 20);
3857
3858                 for (j = 0; j < 50; j++) {
3859                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3860                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3861                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3862                                 break;
3863                         usleep_range(1000, 2000);
3864                 }
3865                 /* Skip if the queue is already in the requested state */
3866                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3867                         continue;
3868
3869                 /* turn on/off the queue */
3870                 if (enable) {
3871                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3872                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3873                 } else {
3874                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3875                 }
3876
3877                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3878                 /* No waiting for the Tx queue to disable */
3879                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3880                         continue;
3881
3882                 /* wait for the change to finish */
3883                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3884                 if (ret) {
3885                         dev_info(&pf->pdev->dev,
3886                                  "VSI seid %d Tx ring %d %sable timeout\n",
3887                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3888                         break;
3889                 }
3890         }
3891
3892         if (hw->revision_id == 0)
3893                 mdelay(50);
3894         return ret;
3895 }
3896
3897 /**
3898  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3899  * @pf: the PF being configured
3900  * @pf_q: the PF queue
3901  * @enable: enable or disable state of the queue
3902  *
3903  * This routine will wait for the given Rx queue of the PF to reach the
3904  * enabled or disabled state.
3905  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3906  * multiple retries; else will return 0 in case of success.
3907  **/
3908 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3909 {
3910         int i;
3911         u32 rx_reg;
3912
3913         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3914                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3915                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3916                         break;
3917
3918                 usleep_range(10, 20);
3919         }
3920         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3921                 return -ETIMEDOUT;
3922
3923         return 0;
3924 }
3925
3926 /**
3927  * i40e_vsi_control_rx - Start or stop a VSI's rings
3928  * @vsi: the VSI being configured
3929  * @enable: start or stop the rings
3930  **/
3931 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3932 {
3933         struct i40e_pf *pf = vsi->back;
3934         struct i40e_hw *hw = &pf->hw;
3935         int i, j, pf_q, ret = 0;
3936         u32 rx_reg;
3937
3938         pf_q = vsi->base_queue;
3939         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3940                 for (j = 0; j < 50; j++) {
3941                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3942                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3943                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3944                                 break;
3945                         usleep_range(1000, 2000);
3946                 }
3947
3948                 /* Skip if the queue is already in the requested state */
3949                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3950                         continue;
3951
3952                 /* turn on/off the queue */
3953                 if (enable)
3954                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3955                 else
3956                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3957                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3958                 /* No waiting for the Tx queue to disable */
3959                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3960                         continue;
3961
3962                 /* wait for the change to finish */
3963                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3964                 if (ret) {
3965                         dev_info(&pf->pdev->dev,
3966                                  "VSI seid %d Rx ring %d %sable timeout\n",
3967                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3968                         break;
3969                 }
3970         }
3971
3972         return ret;
3973 }
3974
3975 /**
3976  * i40e_vsi_control_rings - Start or stop a VSI's rings
3977  * @vsi: the VSI being configured
3978  * @enable: start or stop the rings
3979  **/
3980 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3981 {
3982         int ret = 0;
3983
3984         /* do rx first for enable and last for disable */
3985         if (request) {
3986                 ret = i40e_vsi_control_rx(vsi, request);
3987                 if (ret)
3988                         return ret;
3989                 ret = i40e_vsi_control_tx(vsi, request);
3990         } else {
3991                 /* Ignore return value, we need to shutdown whatever we can */
3992                 i40e_vsi_control_tx(vsi, request);
3993                 i40e_vsi_control_rx(vsi, request);
3994         }
3995
3996         return ret;
3997 }
3998
3999 /**
4000  * i40e_vsi_free_irq - Free the irq association with the OS
4001  * @vsi: the VSI being configured
4002  **/
4003 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
4004 {
4005         struct i40e_pf *pf = vsi->back;
4006         struct i40e_hw *hw = &pf->hw;
4007         int base = vsi->base_vector;
4008         u32 val, qp;
4009         int i;
4010
4011         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4012                 if (!vsi->q_vectors)
4013                         return;
4014
4015                 if (!vsi->irqs_ready)
4016                         return;
4017
4018                 vsi->irqs_ready = false;
4019                 for (i = 0; i < vsi->num_q_vectors; i++) {
4020                         u16 vector = i + base;
4021
4022                         /* free only the irqs that were actually requested */
4023                         if (!vsi->q_vectors[i] ||
4024                             !vsi->q_vectors[i]->num_ringpairs)
4025                                 continue;
4026
4027                         /* clear the affinity_mask in the IRQ descriptor */
4028                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
4029                                               NULL);
4030                         synchronize_irq(pf->msix_entries[vector].vector);
4031                         free_irq(pf->msix_entries[vector].vector,
4032                                  vsi->q_vectors[i]);
4033
4034                         /* Tear down the interrupt queue link list
4035                          *
4036                          * We know that they come in pairs and always
4037                          * the Rx first, then the Tx.  To clear the
4038                          * link list, stick the EOL value into the
4039                          * next_q field of the registers.
4040                          */
4041                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
4042                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4043                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4044                         val |= I40E_QUEUE_END_OF_LIST
4045                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4046                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
4047
4048                         while (qp != I40E_QUEUE_END_OF_LIST) {
4049                                 u32 next;
4050
4051                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4052
4053                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4054                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4055                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4056                                          I40E_QINT_RQCTL_INTEVENT_MASK);
4057
4058                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4059                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4060
4061                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4062
4063                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4064
4065                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
4066                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
4067
4068                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4069                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4070                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4071                                          I40E_QINT_TQCTL_INTEVENT_MASK);
4072
4073                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4074                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4075
4076                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4077                                 qp = next;
4078                         }
4079                 }
4080         } else {
4081                 free_irq(pf->pdev->irq, pf);
4082
4083                 val = rd32(hw, I40E_PFINT_LNKLST0);
4084                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4085                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4086                 val |= I40E_QUEUE_END_OF_LIST
4087                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
4088                 wr32(hw, I40E_PFINT_LNKLST0, val);
4089
4090                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4091                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4092                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4093                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4094                          I40E_QINT_RQCTL_INTEVENT_MASK);
4095
4096                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4097                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4098
4099                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4100
4101                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4102
4103                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4104                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4105                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4106                          I40E_QINT_TQCTL_INTEVENT_MASK);
4107
4108                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4109                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4110
4111                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4112         }
4113 }
4114
4115 /**
4116  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
4117  * @vsi: the VSI being configured
4118  * @v_idx: Index of vector to be freed
4119  *
4120  * This function frees the memory allocated to the q_vector.  In addition if
4121  * NAPI is enabled it will delete any references to the NAPI struct prior
4122  * to freeing the q_vector.
4123  **/
4124 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
4125 {
4126         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4127         struct i40e_ring *ring;
4128
4129         if (!q_vector)
4130                 return;
4131
4132         /* disassociate q_vector from rings */
4133         i40e_for_each_ring(ring, q_vector->tx)
4134                 ring->q_vector = NULL;
4135
4136         i40e_for_each_ring(ring, q_vector->rx)
4137                 ring->q_vector = NULL;
4138
4139         /* only VSI w/ an associated netdev is set up w/ NAPI */
4140         if (vsi->netdev)
4141                 netif_napi_del(&q_vector->napi);
4142
4143         vsi->q_vectors[v_idx] = NULL;
4144
4145         kfree_rcu(q_vector, rcu);
4146 }
4147
4148 /**
4149  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
4150  * @vsi: the VSI being un-configured
4151  *
4152  * This frees the memory allocated to the q_vectors and
4153  * deletes references to the NAPI struct.
4154  **/
4155 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
4156 {
4157         int v_idx;
4158
4159         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
4160                 i40e_free_q_vector(vsi, v_idx);
4161 }
4162
4163 /**
4164  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
4165  * @pf: board private structure
4166  **/
4167 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
4168 {
4169         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
4170         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4171                 pci_disable_msix(pf->pdev);
4172                 kfree(pf->msix_entries);
4173                 pf->msix_entries = NULL;
4174                 kfree(pf->irq_pile);
4175                 pf->irq_pile = NULL;
4176         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
4177                 pci_disable_msi(pf->pdev);
4178         }
4179         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
4180 }
4181
4182 /**
4183  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
4184  * @pf: board private structure
4185  *
4186  * We go through and clear interrupt specific resources and reset the structure
4187  * to pre-load conditions
4188  **/
4189 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
4190 {
4191         int i;
4192
4193         i40e_stop_misc_vector(pf);
4194         if (pf->flags & I40E_FLAG_MSIX_ENABLED && pf->msix_entries) {
4195                 synchronize_irq(pf->msix_entries[0].vector);
4196                 free_irq(pf->msix_entries[0].vector, pf);
4197         }
4198
4199         i40e_put_lump(pf->irq_pile, pf->iwarp_base_vector,
4200                       I40E_IWARP_IRQ_PILE_ID);
4201
4202         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
4203         for (i = 0; i < pf->num_alloc_vsi; i++)
4204                 if (pf->vsi[i])
4205                         i40e_vsi_free_q_vectors(pf->vsi[i]);
4206         i40e_reset_interrupt_capability(pf);
4207 }
4208
4209 /**
4210  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4211  * @vsi: the VSI being configured
4212  **/
4213 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4214 {
4215         int q_idx;
4216
4217         if (!vsi->netdev)
4218                 return;
4219
4220         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4221                 napi_enable(&vsi->q_vectors[q_idx]->napi);
4222 }
4223
4224 /**
4225  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4226  * @vsi: the VSI being configured
4227  **/
4228 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4229 {
4230         int q_idx;
4231
4232         if (!vsi->netdev)
4233                 return;
4234
4235         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4236                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4237 }
4238
4239 /**
4240  * i40e_vsi_close - Shut down a VSI
4241  * @vsi: the vsi to be quelled
4242  **/
4243 static void i40e_vsi_close(struct i40e_vsi *vsi)
4244 {
4245         bool reset = false;
4246
4247         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4248                 i40e_down(vsi);
4249         i40e_vsi_free_irq(vsi);
4250         i40e_vsi_free_tx_resources(vsi);
4251         i40e_vsi_free_rx_resources(vsi);
4252         vsi->current_netdev_flags = 0;
4253         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4254                 reset = true;
4255         i40e_notify_client_of_netdev_close(vsi, reset);
4256 }
4257
4258 /**
4259  * i40e_quiesce_vsi - Pause a given VSI
4260  * @vsi: the VSI being paused
4261  **/
4262 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4263 {
4264         if (test_bit(__I40E_DOWN, &vsi->state))
4265                 return;
4266
4267         /* No need to disable FCoE VSI when Tx suspended */
4268         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4269             vsi->type == I40E_VSI_FCOE) {
4270                 dev_dbg(&vsi->back->pdev->dev,
4271                          "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4272                 return;
4273         }
4274
4275         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4276         if (vsi->netdev && netif_running(vsi->netdev))
4277                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4278         else
4279                 i40e_vsi_close(vsi);
4280 }
4281
4282 /**
4283  * i40e_unquiesce_vsi - Resume a given VSI
4284  * @vsi: the VSI being resumed
4285  **/
4286 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4287 {
4288         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4289                 return;
4290
4291         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4292         if (vsi->netdev && netif_running(vsi->netdev))
4293                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4294         else
4295                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4296 }
4297
4298 /**
4299  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4300  * @pf: the PF
4301  **/
4302 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4303 {
4304         int v;
4305
4306         for (v = 0; v < pf->num_alloc_vsi; v++) {
4307                 if (pf->vsi[v])
4308                         i40e_quiesce_vsi(pf->vsi[v]);
4309         }
4310 }
4311
4312 /**
4313  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4314  * @pf: the PF
4315  **/
4316 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4317 {
4318         int v;
4319
4320         for (v = 0; v < pf->num_alloc_vsi; v++) {
4321                 if (pf->vsi[v])
4322                         i40e_unquiesce_vsi(pf->vsi[v]);
4323         }
4324 }
4325
4326 #ifdef CONFIG_I40E_DCB
4327 /**
4328  * i40e_vsi_wait_queues_disabled - Wait for VSI's queues to be disabled
4329  * @vsi: the VSI being configured
4330  *
4331  * This function waits for the given VSI's queues to be disabled.
4332  **/
4333 static int i40e_vsi_wait_queues_disabled(struct i40e_vsi *vsi)
4334 {
4335         struct i40e_pf *pf = vsi->back;
4336         int i, pf_q, ret;
4337
4338         pf_q = vsi->base_queue;
4339         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4340                 /* Check and wait for the disable status of the queue */
4341                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4342                 if (ret) {
4343                         dev_info(&pf->pdev->dev,
4344                                  "VSI seid %d Tx ring %d disable timeout\n",
4345                                  vsi->seid, pf_q);
4346                         return ret;
4347                 }
4348         }
4349
4350         pf_q = vsi->base_queue;
4351         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4352                 /* Check and wait for the disable status of the queue */
4353                 ret = i40e_pf_rxq_wait(pf, pf_q, false);
4354                 if (ret) {
4355                         dev_info(&pf->pdev->dev,
4356                                  "VSI seid %d Rx ring %d disable timeout\n",
4357                                  vsi->seid, pf_q);
4358                         return ret;
4359                 }
4360         }
4361
4362         return 0;
4363 }
4364
4365 /**
4366  * i40e_pf_wait_queues_disabled - Wait for all queues of PF VSIs to be disabled
4367  * @pf: the PF
4368  *
4369  * This function waits for the queues to be in disabled state for all the
4370  * VSIs that are managed by this PF.
4371  **/
4372 static int i40e_pf_wait_queues_disabled(struct i40e_pf *pf)
4373 {
4374         int v, ret = 0;
4375
4376         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4377                 /* No need to wait for FCoE VSI queues */
4378                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4379                         ret = i40e_vsi_wait_queues_disabled(pf->vsi[v]);
4380                         if (ret)
4381                                 break;
4382                 }
4383         }
4384
4385         return ret;
4386 }
4387
4388 #endif
4389
4390 /**
4391  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4392  * @q_idx: TX queue number
4393  * @vsi: Pointer to VSI struct
4394  *
4395  * This function checks specified queue for given VSI. Detects hung condition.
4396  * Sets hung bit since it is two step process. Before next run of service task
4397  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4398  * hung condition remain unchanged and during subsequent run, this function
4399  * issues SW interrupt to recover from hung condition.
4400  **/
4401 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4402 {
4403         struct i40e_ring *tx_ring = NULL;
4404         struct i40e_pf  *pf;
4405         u32 head, val, tx_pending_hw;
4406         int i;
4407
4408         pf = vsi->back;
4409
4410         /* now that we have an index, find the tx_ring struct */
4411         for (i = 0; i < vsi->num_queue_pairs; i++) {
4412                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4413                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4414                                 tx_ring = vsi->tx_rings[i];
4415                                 break;
4416                         }
4417                 }
4418         }
4419
4420         if (!tx_ring)
4421                 return;
4422
4423         /* Read interrupt register */
4424         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4425                 val = rd32(&pf->hw,
4426                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4427                                                tx_ring->vsi->base_vector - 1));
4428         else
4429                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4430
4431         head = i40e_get_head(tx_ring);
4432
4433         tx_pending_hw = i40e_get_tx_pending(tx_ring, false);
4434
4435         /* HW is done executing descriptors, updated HEAD write back,
4436          * but SW hasn't processed those descriptors. If interrupt is
4437          * not generated from this point ON, it could result into
4438          * dev_watchdog detecting timeout on those netdev_queue,
4439          * hence proactively trigger SW interrupt.
4440          */
4441         if (tx_pending_hw && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))) {
4442                 /* NAPI Poll didn't run and clear since it was set */
4443                 if (test_and_clear_bit(I40E_Q_VECTOR_HUNG_DETECT,
4444                                        &tx_ring->q_vector->hung_detected)) {
4445                         netdev_info(vsi->netdev, "VSI_seid %d, Hung TX queue %d, tx_pending_hw: %d, NTC:0x%x, HWB: 0x%x, NTU: 0x%x, TAIL: 0x%x\n",
4446                                     vsi->seid, q_idx, tx_pending_hw,
4447                                     tx_ring->next_to_clean, head,
4448                                     tx_ring->next_to_use,
4449                                     readl(tx_ring->tail));
4450                         netdev_info(vsi->netdev, "VSI_seid %d, Issuing force_wb for TX queue %d, Interrupt Reg: 0x%x\n",
4451                                     vsi->seid, q_idx, val);
4452                         i40e_force_wb(vsi, tx_ring->q_vector);
4453                 } else {
4454                         /* First Chance - detected possible hung */
4455                         set_bit(I40E_Q_VECTOR_HUNG_DETECT,
4456                                 &tx_ring->q_vector->hung_detected);
4457                 }
4458         }
4459
4460         /* This is the case where we have interrupts missing,
4461          * so the tx_pending in HW will most likely be 0, but we
4462          * will have tx_pending in SW since the WB happened but the
4463          * interrupt got lost.
4464          */
4465         if ((!tx_pending_hw) && i40e_get_tx_pending(tx_ring, true) &&
4466             (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))) {
4467                 if (napi_reschedule(&tx_ring->q_vector->napi))
4468                         tx_ring->tx_stats.tx_lost_interrupt++;
4469         }
4470 }
4471
4472 /**
4473  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4474  * @pf:  pointer to PF struct
4475  *
4476  * LAN VSI has netdev and netdev has TX queues. This function is to check
4477  * each of those TX queues if they are hung, trigger recovery by issuing
4478  * SW interrupt.
4479  **/
4480 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4481 {
4482         struct net_device *netdev;
4483         struct i40e_vsi *vsi;
4484         int i;
4485
4486         /* Only for LAN VSI */
4487         vsi = pf->vsi[pf->lan_vsi];
4488
4489         if (!vsi)
4490                 return;
4491
4492         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4493         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4494             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4495                 return;
4496
4497         /* Make sure type is MAIN VSI */
4498         if (vsi->type != I40E_VSI_MAIN)
4499                 return;
4500
4501         netdev = vsi->netdev;
4502         if (!netdev)
4503                 return;
4504
4505         /* Bail out if netif_carrier is not OK */
4506         if (!netif_carrier_ok(netdev))
4507                 return;
4508
4509         /* Go thru' TX queues for netdev */
4510         for (i = 0; i < netdev->num_tx_queues; i++) {
4511                 struct netdev_queue *q;
4512
4513                 q = netdev_get_tx_queue(netdev, i);
4514                 if (q)
4515                         i40e_detect_recover_hung_queue(i, vsi);
4516         }
4517 }
4518
4519 /**
4520  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4521  * @pf: pointer to PF
4522  *
4523  * Get TC map for ISCSI PF type that will include iSCSI TC
4524  * and LAN TC.
4525  **/
4526 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4527 {
4528         struct i40e_dcb_app_priority_table app;
4529         struct i40e_hw *hw = &pf->hw;
4530         u8 enabled_tc = 1; /* TC0 is always enabled */
4531         u8 tc, i;
4532         /* Get the iSCSI APP TLV */
4533         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4534
4535         for (i = 0; i < dcbcfg->numapps; i++) {
4536                 app = dcbcfg->app[i];
4537                 if (app.selector == I40E_APP_SEL_TCPIP &&
4538                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4539                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4540                         enabled_tc |= BIT(tc);
4541                         break;
4542                 }
4543         }
4544
4545         return enabled_tc;
4546 }
4547
4548 /**
4549  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4550  * @dcbcfg: the corresponding DCBx configuration structure
4551  *
4552  * Return the number of TCs from given DCBx configuration
4553  **/
4554 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4555 {
4556         int i, tc_unused = 0;
4557         u8 num_tc = 0;
4558         u8 ret = 0;
4559
4560         /* Scan the ETS Config Priority Table to find
4561          * traffic class enabled for a given priority
4562          * and create a bitmask of enabled TCs
4563          */
4564         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++)
4565                 num_tc |= BIT(dcbcfg->etscfg.prioritytable[i]);
4566
4567         /* Now scan the bitmask to check for
4568          * contiguous TCs starting with TC0
4569          */
4570         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4571                 if (num_tc & BIT(i)) {
4572                         if (!tc_unused) {
4573                                 ret++;
4574                         } else {
4575                                 pr_err("Non-contiguous TC - Disabling DCB\n");
4576                                 return 1;
4577                         }
4578                 } else {
4579                         tc_unused = 1;
4580                 }
4581         }
4582
4583         /* There is always at least TC0 */
4584         if (!ret)
4585                 ret = 1;
4586
4587         return ret;
4588 }
4589
4590 /**
4591  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4592  * @dcbcfg: the corresponding DCBx configuration structure
4593  *
4594  * Query the current DCB configuration and return the number of
4595  * traffic classes enabled from the given DCBX config
4596  **/
4597 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4598 {
4599         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4600         u8 enabled_tc = 1;
4601         u8 i;
4602
4603         for (i = 0; i < num_tc; i++)
4604                 enabled_tc |= BIT(i);
4605
4606         return enabled_tc;
4607 }
4608
4609 /**
4610  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4611  * @pf: PF being queried
4612  *
4613  * Return number of traffic classes enabled for the given PF
4614  **/
4615 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4616 {
4617         struct i40e_hw *hw = &pf->hw;
4618         u8 i, enabled_tc = 1;
4619         u8 num_tc = 0;
4620         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4621
4622         /* If DCB is not enabled then always in single TC */
4623         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4624                 return 1;
4625
4626         /* SFP mode will be enabled for all TCs on port */
4627         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4628                 return i40e_dcb_get_num_tc(dcbcfg);
4629
4630         /* MFP mode return count of enabled TCs for this PF */
4631         if (pf->hw.func_caps.iscsi)
4632                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4633         else
4634                 return 1; /* Only TC0 */
4635
4636         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4637                 if (enabled_tc & BIT(i))
4638                         num_tc++;
4639         }
4640         return num_tc;
4641 }
4642
4643 /**
4644  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4645  * @pf: PF being queried
4646  *
4647  * Return a bitmap for first enabled traffic class for this PF.
4648  **/
4649 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4650 {
4651         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4652         u8 i = 0;
4653
4654         if (!enabled_tc)
4655                 return 0x1; /* TC0 */
4656
4657         /* Find the first enabled TC */
4658         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4659                 if (enabled_tc & BIT(i))
4660                         break;
4661         }
4662
4663         return BIT(i);
4664 }
4665
4666 /**
4667  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4668  * @pf: PF being queried
4669  *
4670  * Return a bitmap for enabled traffic classes for this PF.
4671  **/
4672 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4673 {
4674         /* If DCB is not enabled for this PF then just return default TC */
4675         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4676                 return i40e_pf_get_default_tc(pf);
4677
4678         /* SFP mode we want PF to be enabled for all TCs */
4679         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4680                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4681
4682         /* MFP enabled and iSCSI PF type */
4683         if (pf->hw.func_caps.iscsi)
4684                 return i40e_get_iscsi_tc_map(pf);
4685         else
4686                 return i40e_pf_get_default_tc(pf);
4687 }
4688
4689 /**
4690  * i40e_vsi_get_bw_info - Query VSI BW Information
4691  * @vsi: the VSI being queried
4692  *
4693  * Returns 0 on success, negative value on failure
4694  **/
4695 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4696 {
4697         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4698         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4699         struct i40e_pf *pf = vsi->back;
4700         struct i40e_hw *hw = &pf->hw;
4701         i40e_status ret;
4702         u32 tc_bw_max;
4703         int i;
4704
4705         /* Get the VSI level BW configuration */
4706         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4707         if (ret) {
4708                 dev_info(&pf->pdev->dev,
4709                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4710                          i40e_stat_str(&pf->hw, ret),
4711                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4712                 return -EINVAL;
4713         }
4714
4715         /* Get the VSI level BW configuration per TC */
4716         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4717                                                NULL);
4718         if (ret) {
4719                 dev_info(&pf->pdev->dev,
4720                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4721                          i40e_stat_str(&pf->hw, ret),
4722                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4723                 return -EINVAL;
4724         }
4725
4726         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4727                 dev_info(&pf->pdev->dev,
4728                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4729                          bw_config.tc_valid_bits,
4730                          bw_ets_config.tc_valid_bits);
4731                 /* Still continuing */
4732         }
4733
4734         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4735         vsi->bw_max_quanta = bw_config.max_bw;
4736         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4737                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4738         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4739                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4740                 vsi->bw_ets_limit_credits[i] =
4741                                         le16_to_cpu(bw_ets_config.credits[i]);
4742                 /* 3 bits out of 4 for each TC */
4743                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4744         }
4745
4746         return 0;
4747 }
4748
4749 /**
4750  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4751  * @vsi: the VSI being configured
4752  * @enabled_tc: TC bitmap
4753  * @bw_credits: BW shared credits per TC
4754  *
4755  * Returns 0 on success, negative value on failure
4756  **/
4757 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4758                                        u8 *bw_share)
4759 {
4760         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4761         i40e_status ret;
4762         int i;
4763
4764         bw_data.tc_valid_bits = enabled_tc;
4765         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4766                 bw_data.tc_bw_credits[i] = bw_share[i];
4767
4768         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4769                                        NULL);
4770         if (ret) {
4771                 dev_info(&vsi->back->pdev->dev,
4772                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4773                          vsi->back->hw.aq.asq_last_status);
4774                 return -EINVAL;
4775         }
4776
4777         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4778                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4779
4780         return 0;
4781 }
4782
4783 /**
4784  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4785  * @vsi: the VSI being configured
4786  * @enabled_tc: TC map to be enabled
4787  *
4788  **/
4789 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4790 {
4791         struct net_device *netdev = vsi->netdev;
4792         struct i40e_pf *pf = vsi->back;
4793         struct i40e_hw *hw = &pf->hw;
4794         u8 netdev_tc = 0;
4795         int i;
4796         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4797
4798         if (!netdev)
4799                 return;
4800
4801         if (!enabled_tc) {
4802                 netdev_reset_tc(netdev);
4803                 return;
4804         }
4805
4806         /* Set up actual enabled TCs on the VSI */
4807         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4808                 return;
4809
4810         /* set per TC queues for the VSI */
4811         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4812                 /* Only set TC queues for enabled tcs
4813                  *
4814                  * e.g. For a VSI that has TC0 and TC3 enabled the
4815                  * enabled_tc bitmap would be 0x00001001; the driver
4816                  * will set the numtc for netdev as 2 that will be
4817                  * referenced by the netdev layer as TC 0 and 1.
4818                  */
4819                 if (vsi->tc_config.enabled_tc & BIT(i))
4820                         netdev_set_tc_queue(netdev,
4821                                         vsi->tc_config.tc_info[i].netdev_tc,
4822                                         vsi->tc_config.tc_info[i].qcount,
4823                                         vsi->tc_config.tc_info[i].qoffset);
4824         }
4825
4826         /* Assign UP2TC map for the VSI */
4827         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4828                 /* Get the actual TC# for the UP */
4829                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4830                 /* Get the mapped netdev TC# for the UP */
4831                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4832                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4833         }
4834 }
4835
4836 /**
4837  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4838  * @vsi: the VSI being configured
4839  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4840  **/
4841 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4842                                       struct i40e_vsi_context *ctxt)
4843 {
4844         /* copy just the sections touched not the entire info
4845          * since not all sections are valid as returned by
4846          * update vsi params
4847          */
4848         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4849         memcpy(&vsi->info.queue_mapping,
4850                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4851         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4852                sizeof(vsi->info.tc_mapping));
4853 }
4854
4855 /**
4856  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4857  * @vsi: VSI to be configured
4858  * @enabled_tc: TC bitmap
4859  *
4860  * This configures a particular VSI for TCs that are mapped to the
4861  * given TC bitmap. It uses default bandwidth share for TCs across
4862  * VSIs to configure TC for a particular VSI.
4863  *
4864  * NOTE:
4865  * It is expected that the VSI queues have been quisced before calling
4866  * this function.
4867  **/
4868 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4869 {
4870         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4871         struct i40e_vsi_context ctxt;
4872         int ret = 0;
4873         int i;
4874
4875         /* Check if enabled_tc is same as existing or new TCs */
4876         if (vsi->tc_config.enabled_tc == enabled_tc)
4877                 return ret;
4878
4879         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4880         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4881                 if (enabled_tc & BIT(i))
4882                         bw_share[i] = 1;
4883         }
4884
4885         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4886         if (ret) {
4887                 dev_info(&vsi->back->pdev->dev,
4888                          "Failed configuring TC map %d for VSI %d\n",
4889                          enabled_tc, vsi->seid);
4890                 goto out;
4891         }
4892
4893         /* Update Queue Pairs Mapping for currently enabled UPs */
4894         ctxt.seid = vsi->seid;
4895         ctxt.pf_num = vsi->back->hw.pf_id;
4896         ctxt.vf_num = 0;
4897         ctxt.uplink_seid = vsi->uplink_seid;
4898         ctxt.info = vsi->info;
4899         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4900
4901         if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
4902                 ctxt.info.valid_sections |=
4903                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
4904                 ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA;
4905         }
4906
4907         /* Update the VSI after updating the VSI queue-mapping information */
4908         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4909         if (ret) {
4910                 dev_info(&vsi->back->pdev->dev,
4911                          "Update vsi tc config failed, err %s aq_err %s\n",
4912                          i40e_stat_str(&vsi->back->hw, ret),
4913                          i40e_aq_str(&vsi->back->hw,
4914                                      vsi->back->hw.aq.asq_last_status));
4915                 goto out;
4916         }
4917         /* update the local VSI info with updated queue map */
4918         i40e_vsi_update_queue_map(vsi, &ctxt);
4919         vsi->info.valid_sections = 0;
4920
4921         /* Update current VSI BW information */
4922         ret = i40e_vsi_get_bw_info(vsi);
4923         if (ret) {
4924                 dev_info(&vsi->back->pdev->dev,
4925                          "Failed updating vsi bw info, err %s aq_err %s\n",
4926                          i40e_stat_str(&vsi->back->hw, ret),
4927                          i40e_aq_str(&vsi->back->hw,
4928                                      vsi->back->hw.aq.asq_last_status));
4929                 goto out;
4930         }
4931
4932         /* Update the netdev TC setup */
4933         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4934 out:
4935         return ret;
4936 }
4937
4938 /**
4939  * i40e_veb_config_tc - Configure TCs for given VEB
4940  * @veb: given VEB
4941  * @enabled_tc: TC bitmap
4942  *
4943  * Configures given TC bitmap for VEB (switching) element
4944  **/
4945 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4946 {
4947         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4948         struct i40e_pf *pf = veb->pf;
4949         int ret = 0;
4950         int i;
4951
4952         /* No TCs or already enabled TCs just return */
4953         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4954                 return ret;
4955
4956         bw_data.tc_valid_bits = enabled_tc;
4957         /* bw_data.absolute_credits is not set (relative) */
4958
4959         /* Enable ETS TCs with equal BW Share for now */
4960         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4961                 if (enabled_tc & BIT(i))
4962                         bw_data.tc_bw_share_credits[i] = 1;
4963         }
4964
4965         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4966                                                    &bw_data, NULL);
4967         if (ret) {
4968                 dev_info(&pf->pdev->dev,
4969                          "VEB bw config failed, err %s aq_err %s\n",
4970                          i40e_stat_str(&pf->hw, ret),
4971                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4972                 goto out;
4973         }
4974
4975         /* Update the BW information */
4976         ret = i40e_veb_get_bw_info(veb);
4977         if (ret) {
4978                 dev_info(&pf->pdev->dev,
4979                          "Failed getting veb bw config, err %s aq_err %s\n",
4980                          i40e_stat_str(&pf->hw, ret),
4981                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4982         }
4983
4984 out:
4985         return ret;
4986 }
4987
4988 #ifdef CONFIG_I40E_DCB
4989 /**
4990  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4991  * @pf: PF struct
4992  *
4993  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4994  * the caller would've quiesce all the VSIs before calling
4995  * this function
4996  **/
4997 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4998 {
4999         u8 tc_map = 0;
5000         int ret;
5001         u8 v;
5002
5003         /* Enable the TCs available on PF to all VEBs */
5004         tc_map = i40e_pf_get_tc_map(pf);
5005         for (v = 0; v < I40E_MAX_VEB; v++) {
5006                 if (!pf->veb[v])
5007                         continue;
5008                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
5009                 if (ret) {
5010                         dev_info(&pf->pdev->dev,
5011                                  "Failed configuring TC for VEB seid=%d\n",
5012                                  pf->veb[v]->seid);
5013                         /* Will try to configure as many components */
5014                 }
5015         }
5016
5017         /* Update each VSI */
5018         for (v = 0; v < pf->num_alloc_vsi; v++) {
5019                 if (!pf->vsi[v])
5020                         continue;
5021
5022                 /* - Enable all TCs for the LAN VSI
5023 #ifdef I40E_FCOE
5024                  * - For FCoE VSI only enable the TC configured
5025                  *   as per the APP TLV
5026 #endif
5027                  * - For all others keep them at TC0 for now
5028                  */
5029                 if (v == pf->lan_vsi)
5030                         tc_map = i40e_pf_get_tc_map(pf);
5031                 else
5032                         tc_map = i40e_pf_get_default_tc(pf);
5033 #ifdef I40E_FCOE
5034                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
5035                         tc_map = i40e_get_fcoe_tc_map(pf);
5036 #endif /* #ifdef I40E_FCOE */
5037
5038                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
5039                 if (ret) {
5040                         dev_info(&pf->pdev->dev,
5041                                  "Failed configuring TC for VSI seid=%d\n",
5042                                  pf->vsi[v]->seid);
5043                         /* Will try to configure as many components */
5044                 } else {
5045                         /* Re-configure VSI vectors based on updated TC map */
5046                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
5047                         if (pf->vsi[v]->netdev)
5048                                 i40e_dcbnl_set_all(pf->vsi[v]);
5049                 }
5050         }
5051 }
5052
5053 /**
5054  * i40e_resume_port_tx - Resume port Tx
5055  * @pf: PF struct
5056  *
5057  * Resume a port's Tx and issue a PF reset in case of failure to
5058  * resume.
5059  **/
5060 static int i40e_resume_port_tx(struct i40e_pf *pf)
5061 {
5062         struct i40e_hw *hw = &pf->hw;
5063         int ret;
5064
5065         ret = i40e_aq_resume_port_tx(hw, NULL);
5066         if (ret) {
5067                 dev_info(&pf->pdev->dev,
5068                          "Resume Port Tx failed, err %s aq_err %s\n",
5069                           i40e_stat_str(&pf->hw, ret),
5070                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5071                 /* Schedule PF reset to recover */
5072                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5073                 i40e_service_event_schedule(pf);
5074         }
5075
5076         return ret;
5077 }
5078
5079 /**
5080  * i40e_init_pf_dcb - Initialize DCB configuration
5081  * @pf: PF being configured
5082  *
5083  * Query the current DCB configuration and cache it
5084  * in the hardware structure
5085  **/
5086 static int i40e_init_pf_dcb(struct i40e_pf *pf)
5087 {
5088         struct i40e_hw *hw = &pf->hw;
5089         int err = 0;
5090
5091         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
5092         if (pf->flags & I40E_FLAG_NO_DCB_SUPPORT)
5093                 goto out;
5094
5095         /* Get the initial DCB configuration */
5096         err = i40e_init_dcb(hw);
5097         if (!err) {
5098                 /* Device/Function is not DCBX capable */
5099                 if ((!hw->func_caps.dcb) ||
5100                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
5101                         dev_info(&pf->pdev->dev,
5102                                  "DCBX offload is not supported or is disabled for this PF.\n");
5103
5104                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
5105                                 goto out;
5106
5107                 } else {
5108                         /* When status is not DISABLED then DCBX in FW */
5109                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
5110                                        DCB_CAP_DCBX_VER_IEEE;
5111
5112                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
5113                         /* Enable DCB tagging only when more than one TC
5114                          * or explicitly disable if only one TC
5115                          */
5116                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5117                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5118                         else
5119                                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5120                         dev_dbg(&pf->pdev->dev,
5121                                 "DCBX offload is supported for this PF.\n");
5122                 }
5123         } else {
5124                 dev_info(&pf->pdev->dev,
5125                          "Query for DCB configuration failed, err %s aq_err %s\n",
5126                          i40e_stat_str(&pf->hw, err),
5127                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5128         }
5129
5130 out:
5131         return err;
5132 }
5133 #endif /* CONFIG_I40E_DCB */
5134 #define SPEED_SIZE 14
5135 #define FC_SIZE 8
5136 /**
5137  * i40e_print_link_message - print link up or down
5138  * @vsi: the VSI for which link needs a message
5139  */
5140 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
5141 {
5142         char *speed = "Unknown";
5143         char *fc = "Unknown";
5144
5145         if (vsi->current_isup == isup)
5146                 return;
5147         vsi->current_isup = isup;
5148         if (!isup) {
5149                 netdev_info(vsi->netdev, "NIC Link is Down\n");
5150                 return;
5151         }
5152
5153         /* Warn user if link speed on NPAR enabled partition is not at
5154          * least 10GB
5155          */
5156         if (vsi->back->hw.func_caps.npar_enable &&
5157             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
5158              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
5159                 netdev_warn(vsi->netdev,
5160                             "The partition detected link speed that is less than 10Gbps\n");
5161
5162         switch (vsi->back->hw.phy.link_info.link_speed) {
5163         case I40E_LINK_SPEED_40GB:
5164                 speed = "40 G";
5165                 break;
5166         case I40E_LINK_SPEED_20GB:
5167                 speed = "20 G";
5168                 break;
5169         case I40E_LINK_SPEED_10GB:
5170                 speed = "10 G";
5171                 break;
5172         case I40E_LINK_SPEED_1GB:
5173                 speed = "1000 M";
5174                 break;
5175         case I40E_LINK_SPEED_100MB:
5176                 speed = "100 M";
5177                 break;
5178         default:
5179                 break;
5180         }
5181
5182         switch (vsi->back->hw.fc.current_mode) {
5183         case I40E_FC_FULL:
5184                 fc = "RX/TX";
5185                 break;
5186         case I40E_FC_TX_PAUSE:
5187                 fc = "TX";
5188                 break;
5189         case I40E_FC_RX_PAUSE:
5190                 fc = "RX";
5191                 break;
5192         default:
5193                 fc = "None";
5194                 break;
5195         }
5196
5197         netdev_info(vsi->netdev, "NIC Link is Up %sbps Full Duplex, Flow Control: %s\n",
5198                     speed, fc);
5199 }
5200
5201 /**
5202  * i40e_up_complete - Finish the last steps of bringing up a connection
5203  * @vsi: the VSI being configured
5204  **/
5205 static int i40e_up_complete(struct i40e_vsi *vsi)
5206 {
5207         struct i40e_pf *pf = vsi->back;
5208         int err;
5209
5210         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5211                 i40e_vsi_configure_msix(vsi);
5212         else
5213                 i40e_configure_msi_and_legacy(vsi);
5214
5215         /* start rings */
5216         err = i40e_vsi_control_rings(vsi, true);
5217         if (err)
5218                 return err;
5219
5220         clear_bit(__I40E_DOWN, &vsi->state);
5221         i40e_napi_enable_all(vsi);
5222         i40e_vsi_enable_irq(vsi);
5223
5224         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
5225             (vsi->netdev)) {
5226                 i40e_print_link_message(vsi, true);
5227                 netif_tx_start_all_queues(vsi->netdev);
5228                 netif_carrier_on(vsi->netdev);
5229         } else if (vsi->netdev) {
5230                 i40e_print_link_message(vsi, false);
5231                 /* need to check for qualified module here*/
5232                 if ((pf->hw.phy.link_info.link_info &
5233                         I40E_AQ_MEDIA_AVAILABLE) &&
5234                     (!(pf->hw.phy.link_info.an_info &
5235                         I40E_AQ_QUALIFIED_MODULE)))
5236                         netdev_err(vsi->netdev,
5237                                    "the driver failed to link because an unqualified module was detected.");
5238         }
5239
5240         /* replay FDIR SB filters */
5241         if (vsi->type == I40E_VSI_FDIR) {
5242                 /* reset fd counters */
5243                 pf->fd_add_err = pf->fd_atr_cnt = 0;
5244                 if (pf->fd_tcp_rule > 0) {
5245                         pf->auto_disable_flags |= I40E_FLAG_FD_ATR_ENABLED;
5246                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5247                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
5248                         pf->fd_tcp_rule = 0;
5249                 }
5250                 i40e_fdir_filter_restore(vsi);
5251         }
5252
5253         /* On the next run of the service_task, notify any clients of the new
5254          * opened netdev
5255          */
5256         pf->flags |= I40E_FLAG_SERVICE_CLIENT_REQUESTED;
5257         i40e_service_event_schedule(pf);
5258
5259         return 0;
5260 }
5261
5262 /**
5263  * i40e_vsi_reinit_locked - Reset the VSI
5264  * @vsi: the VSI being configured
5265  *
5266  * Rebuild the ring structs after some configuration
5267  * has changed, e.g. MTU size.
5268  **/
5269 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
5270 {
5271         struct i40e_pf *pf = vsi->back;
5272
5273         WARN_ON(in_interrupt());
5274         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
5275                 usleep_range(1000, 2000);
5276         i40e_down(vsi);
5277
5278         i40e_up(vsi);
5279         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
5280 }
5281
5282 /**
5283  * i40e_up - Bring the connection back up after being down
5284  * @vsi: the VSI being configured
5285  **/
5286 int i40e_up(struct i40e_vsi *vsi)
5287 {
5288         int err;
5289
5290         err = i40e_vsi_configure(vsi);
5291         if (!err)
5292                 err = i40e_up_complete(vsi);
5293
5294         return err;
5295 }
5296
5297 /**
5298  * i40e_down - Shutdown the connection processing
5299  * @vsi: the VSI being stopped
5300  **/
5301 void i40e_down(struct i40e_vsi *vsi)
5302 {
5303         int i;
5304
5305         /* It is assumed that the caller of this function
5306          * sets the vsi->state __I40E_DOWN bit.
5307          */
5308         if (vsi->netdev) {
5309                 netif_carrier_off(vsi->netdev);
5310                 netif_tx_disable(vsi->netdev);
5311         }
5312         i40e_vsi_disable_irq(vsi);
5313         i40e_vsi_control_rings(vsi, false);
5314         i40e_napi_disable_all(vsi);
5315
5316         for (i = 0; i < vsi->num_queue_pairs; i++) {
5317                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5318                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5319         }
5320
5321         i40e_notify_client_of_netdev_close(vsi, false);
5322
5323 }
5324
5325 /**
5326  * i40e_setup_tc - configure multiple traffic classes
5327  * @netdev: net device to configure
5328  * @tc: number of traffic classes to enable
5329  **/
5330 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5331 {
5332         struct i40e_netdev_priv *np = netdev_priv(netdev);
5333         struct i40e_vsi *vsi = np->vsi;
5334         struct i40e_pf *pf = vsi->back;
5335         u8 enabled_tc = 0;
5336         int ret = -EINVAL;
5337         int i;
5338
5339         /* Check if DCB enabled to continue */
5340         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5341                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5342                 goto exit;
5343         }
5344
5345         /* Check if MFP enabled */
5346         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5347                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5348                 goto exit;
5349         }
5350
5351         /* Check whether tc count is within enabled limit */
5352         if (tc > i40e_pf_get_num_tc(pf)) {
5353                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5354                 goto exit;
5355         }
5356
5357         /* Generate TC map for number of tc requested */
5358         for (i = 0; i < tc; i++)
5359                 enabled_tc |= BIT(i);
5360
5361         /* Requesting same TC configuration as already enabled */
5362         if (enabled_tc == vsi->tc_config.enabled_tc)
5363                 return 0;
5364
5365         /* Quiesce VSI queues */
5366         i40e_quiesce_vsi(vsi);
5367
5368         /* Configure VSI for enabled TCs */
5369         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5370         if (ret) {
5371                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5372                             vsi->seid);
5373                 goto exit;
5374         }
5375
5376         /* Unquiesce VSI */
5377         i40e_unquiesce_vsi(vsi);
5378
5379 exit:
5380         return ret;
5381 }
5382
5383 #ifdef I40E_FCOE
5384 int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5385                     struct tc_to_netdev *tc)
5386 #else
5387 static int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5388                            struct tc_to_netdev *tc)
5389 #endif
5390 {
5391         if (handle != TC_H_ROOT || tc->type != TC_SETUP_MQPRIO)
5392                 return -EINVAL;
5393         return i40e_setup_tc(netdev, tc->tc);
5394 }
5395
5396 /**
5397  * i40e_open - Called when a network interface is made active
5398  * @netdev: network interface device structure
5399  *
5400  * The open entry point is called when a network interface is made
5401  * active by the system (IFF_UP).  At this point all resources needed
5402  * for transmit and receive operations are allocated, the interrupt
5403  * handler is registered with the OS, the netdev watchdog subtask is
5404  * enabled, and the stack is notified that the interface is ready.
5405  *
5406  * Returns 0 on success, negative value on failure
5407  **/
5408 int i40e_open(struct net_device *netdev)
5409 {
5410         struct i40e_netdev_priv *np = netdev_priv(netdev);
5411         struct i40e_vsi *vsi = np->vsi;
5412         struct i40e_pf *pf = vsi->back;
5413         int err;
5414
5415         /* disallow open during test or if eeprom is broken */
5416         if (test_bit(__I40E_TESTING, &pf->state) ||
5417             test_bit(__I40E_BAD_EEPROM, &pf->state))
5418                 return -EBUSY;
5419
5420         netif_carrier_off(netdev);
5421
5422         err = i40e_vsi_open(vsi);
5423         if (err)
5424                 return err;
5425
5426         /* configure global TSO hardware offload settings */
5427         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5428                                                        TCP_FLAG_FIN) >> 16);
5429         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5430                                                        TCP_FLAG_FIN |
5431                                                        TCP_FLAG_CWR) >> 16);
5432         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5433
5434         udp_tunnel_get_rx_info(netdev);
5435
5436         return 0;
5437 }
5438
5439 /**
5440  * i40e_vsi_open -
5441  * @vsi: the VSI to open
5442  *
5443  * Finish initialization of the VSI.
5444  *
5445  * Returns 0 on success, negative value on failure
5446  **/
5447 int i40e_vsi_open(struct i40e_vsi *vsi)
5448 {
5449         struct i40e_pf *pf = vsi->back;
5450         char int_name[I40E_INT_NAME_STR_LEN];
5451         int err;
5452
5453         /* allocate descriptors */
5454         err = i40e_vsi_setup_tx_resources(vsi);
5455         if (err)
5456                 goto err_setup_tx;
5457         err = i40e_vsi_setup_rx_resources(vsi);
5458         if (err)
5459                 goto err_setup_rx;
5460
5461         err = i40e_vsi_configure(vsi);
5462         if (err)
5463                 goto err_setup_rx;
5464
5465         if (vsi->netdev) {
5466                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5467                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5468                 err = i40e_vsi_request_irq(vsi, int_name);
5469                 if (err)
5470                         goto err_setup_rx;
5471
5472                 /* Notify the stack of the actual queue counts. */
5473                 err = netif_set_real_num_tx_queues(vsi->netdev,
5474                                                    vsi->num_queue_pairs);
5475                 if (err)
5476                         goto err_set_queues;
5477
5478                 err = netif_set_real_num_rx_queues(vsi->netdev,
5479                                                    vsi->num_queue_pairs);
5480                 if (err)
5481                         goto err_set_queues;
5482
5483         } else if (vsi->type == I40E_VSI_FDIR) {
5484                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5485                          dev_driver_string(&pf->pdev->dev),
5486                          dev_name(&pf->pdev->dev));
5487                 err = i40e_vsi_request_irq(vsi, int_name);
5488
5489         } else {
5490                 err = -EINVAL;
5491                 goto err_setup_rx;
5492         }
5493
5494         err = i40e_up_complete(vsi);
5495         if (err)
5496                 goto err_up_complete;
5497
5498         return 0;
5499
5500 err_up_complete:
5501         i40e_down(vsi);
5502 err_set_queues:
5503         i40e_vsi_free_irq(vsi);
5504 err_setup_rx:
5505         i40e_vsi_free_rx_resources(vsi);
5506 err_setup_tx:
5507         i40e_vsi_free_tx_resources(vsi);
5508         if (vsi == pf->vsi[pf->lan_vsi])
5509                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5510
5511         return err;
5512 }
5513
5514 /**
5515  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5516  * @pf: Pointer to PF
5517  *
5518  * This function destroys the hlist where all the Flow Director
5519  * filters were saved.
5520  **/
5521 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5522 {
5523         struct i40e_fdir_filter *filter;
5524         struct hlist_node *node2;
5525
5526         hlist_for_each_entry_safe(filter, node2,
5527                                   &pf->fdir_filter_list, fdir_node) {
5528                 hlist_del(&filter->fdir_node);
5529                 kfree(filter);
5530         }
5531         pf->fdir_pf_active_filters = 0;
5532 }
5533
5534 /**
5535  * i40e_close - Disables a network interface
5536  * @netdev: network interface device structure
5537  *
5538  * The close entry point is called when an interface is de-activated
5539  * by the OS.  The hardware is still under the driver's control, but
5540  * this netdev interface is disabled.
5541  *
5542  * Returns 0, this is not allowed to fail
5543  **/
5544 int i40e_close(struct net_device *netdev)
5545 {
5546         struct i40e_netdev_priv *np = netdev_priv(netdev);
5547         struct i40e_vsi *vsi = np->vsi;
5548
5549         i40e_vsi_close(vsi);
5550
5551         return 0;
5552 }
5553
5554 /**
5555  * i40e_do_reset - Start a PF or Core Reset sequence
5556  * @pf: board private structure
5557  * @reset_flags: which reset is requested
5558  *
5559  * The essential difference in resets is that the PF Reset
5560  * doesn't clear the packet buffers, doesn't reset the PE
5561  * firmware, and doesn't bother the other PFs on the chip.
5562  **/
5563 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5564 {
5565         u32 val;
5566
5567         WARN_ON(in_interrupt());
5568
5569
5570         /* do the biggest reset indicated */
5571         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5572
5573                 /* Request a Global Reset
5574                  *
5575                  * This will start the chip's countdown to the actual full
5576                  * chip reset event, and a warning interrupt to be sent
5577                  * to all PFs, including the requestor.  Our handler
5578                  * for the warning interrupt will deal with the shutdown
5579                  * and recovery of the switch setup.
5580                  */
5581                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5582                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5583                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5584                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5585
5586         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5587
5588                 /* Request a Core Reset
5589                  *
5590                  * Same as Global Reset, except does *not* include the MAC/PHY
5591                  */
5592                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5593                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5594                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5595                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5596                 i40e_flush(&pf->hw);
5597
5598         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5599
5600                 /* Request a PF Reset
5601                  *
5602                  * Resets only the PF-specific registers
5603                  *
5604                  * This goes directly to the tear-down and rebuild of
5605                  * the switch, since we need to do all the recovery as
5606                  * for the Core Reset.
5607                  */
5608                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5609                 i40e_handle_reset_warning(pf);
5610
5611         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5612                 int v;
5613
5614                 /* Find the VSI(s) that requested a re-init */
5615                 dev_info(&pf->pdev->dev,
5616                          "VSI reinit requested\n");
5617                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5618                         struct i40e_vsi *vsi = pf->vsi[v];
5619
5620                         if (vsi != NULL &&
5621                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5622                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5623                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5624                         }
5625                 }
5626         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5627                 int v;
5628
5629                 /* Find the VSI(s) that needs to be brought down */
5630                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5631                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5632                         struct i40e_vsi *vsi = pf->vsi[v];
5633
5634                         if (vsi != NULL &&
5635                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5636                                 set_bit(__I40E_DOWN, &vsi->state);
5637                                 i40e_down(vsi);
5638                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5639                         }
5640                 }
5641         } else {
5642                 dev_info(&pf->pdev->dev,
5643                          "bad reset request 0x%08x\n", reset_flags);
5644         }
5645 }
5646
5647 #ifdef CONFIG_I40E_DCB
5648 /**
5649  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5650  * @pf: board private structure
5651  * @old_cfg: current DCB config
5652  * @new_cfg: new DCB config
5653  **/
5654 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5655                             struct i40e_dcbx_config *old_cfg,
5656                             struct i40e_dcbx_config *new_cfg)
5657 {
5658         bool need_reconfig = false;
5659
5660         /* Check if ETS configuration has changed */
5661         if (memcmp(&new_cfg->etscfg,
5662                    &old_cfg->etscfg,
5663                    sizeof(new_cfg->etscfg))) {
5664                 /* If Priority Table has changed reconfig is needed */
5665                 if (memcmp(&new_cfg->etscfg.prioritytable,
5666                            &old_cfg->etscfg.prioritytable,
5667                            sizeof(new_cfg->etscfg.prioritytable))) {
5668                         need_reconfig = true;
5669                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5670                 }
5671
5672                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5673                            &old_cfg->etscfg.tcbwtable,
5674                            sizeof(new_cfg->etscfg.tcbwtable)))
5675                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5676
5677                 if (memcmp(&new_cfg->etscfg.tsatable,
5678                            &old_cfg->etscfg.tsatable,
5679                            sizeof(new_cfg->etscfg.tsatable)))
5680                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5681         }
5682
5683         /* Check if PFC configuration has changed */
5684         if (memcmp(&new_cfg->pfc,
5685                    &old_cfg->pfc,
5686                    sizeof(new_cfg->pfc))) {
5687                 need_reconfig = true;
5688                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5689         }
5690
5691         /* Check if APP Table has changed */
5692         if (memcmp(&new_cfg->app,
5693                    &old_cfg->app,
5694                    sizeof(new_cfg->app))) {
5695                 need_reconfig = true;
5696                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5697         }
5698
5699         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5700         return need_reconfig;
5701 }
5702
5703 /**
5704  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5705  * @pf: board private structure
5706  * @e: event info posted on ARQ
5707  **/
5708 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5709                                   struct i40e_arq_event_info *e)
5710 {
5711         struct i40e_aqc_lldp_get_mib *mib =
5712                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5713         struct i40e_hw *hw = &pf->hw;
5714         struct i40e_dcbx_config tmp_dcbx_cfg;
5715         bool need_reconfig = false;
5716         int ret = 0;
5717         u8 type;
5718
5719         /* Not DCB capable or capability disabled */
5720         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
5721                 return ret;
5722
5723         /* Ignore if event is not for Nearest Bridge */
5724         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5725                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5726         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5727         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5728                 return ret;
5729
5730         /* Check MIB Type and return if event for Remote MIB update */
5731         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5732         dev_dbg(&pf->pdev->dev,
5733                 "LLDP event mib type %s\n", type ? "remote" : "local");
5734         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5735                 /* Update the remote cached instance and return */
5736                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5737                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5738                                 &hw->remote_dcbx_config);
5739                 goto exit;
5740         }
5741
5742         /* Store the old configuration */
5743         tmp_dcbx_cfg = hw->local_dcbx_config;
5744
5745         /* Reset the old DCBx configuration data */
5746         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5747         /* Get updated DCBX data from firmware */
5748         ret = i40e_get_dcb_config(&pf->hw);
5749         if (ret) {
5750                 dev_info(&pf->pdev->dev,
5751                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5752                          i40e_stat_str(&pf->hw, ret),
5753                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5754                 goto exit;
5755         }
5756
5757         /* No change detected in DCBX configs */
5758         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5759                     sizeof(tmp_dcbx_cfg))) {
5760                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5761                 goto exit;
5762         }
5763
5764         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5765                                                &hw->local_dcbx_config);
5766
5767         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5768
5769         if (!need_reconfig)
5770                 goto exit;
5771
5772         /* Enable DCB tagging only when more than one TC */
5773         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5774                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5775         else
5776                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5777
5778         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5779         /* Reconfiguration needed quiesce all VSIs */
5780         i40e_pf_quiesce_all_vsi(pf);
5781
5782         /* Changes in configuration update VEB/VSI */
5783         i40e_dcb_reconfigure(pf);
5784
5785         ret = i40e_resume_port_tx(pf);
5786
5787         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5788         /* In case of error no point in resuming VSIs */
5789         if (ret)
5790                 goto exit;
5791
5792         /* Wait for the PF's queues to be disabled */
5793         ret = i40e_pf_wait_queues_disabled(pf);
5794         if (ret) {
5795                 /* Schedule PF reset to recover */
5796                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5797                 i40e_service_event_schedule(pf);
5798         } else {
5799                 i40e_pf_unquiesce_all_vsi(pf);
5800                 /* Notify the client for the DCB changes */
5801                 i40e_notify_client_of_l2_param_changes(pf->vsi[pf->lan_vsi]);
5802         }
5803
5804 exit:
5805         return ret;
5806 }
5807 #endif /* CONFIG_I40E_DCB */
5808
5809 /**
5810  * i40e_do_reset_safe - Protected reset path for userland calls.
5811  * @pf: board private structure
5812  * @reset_flags: which reset is requested
5813  *
5814  **/
5815 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5816 {
5817         rtnl_lock();
5818         i40e_do_reset(pf, reset_flags);
5819         rtnl_unlock();
5820 }
5821
5822 /**
5823  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5824  * @pf: board private structure
5825  * @e: event info posted on ARQ
5826  *
5827  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5828  * and VF queues
5829  **/
5830 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5831                                            struct i40e_arq_event_info *e)
5832 {
5833         struct i40e_aqc_lan_overflow *data =
5834                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5835         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5836         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5837         struct i40e_hw *hw = &pf->hw;
5838         struct i40e_vf *vf;
5839         u16 vf_id;
5840
5841         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5842                 queue, qtx_ctl);
5843
5844         /* Queue belongs to VF, find the VF and issue VF reset */
5845         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5846             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5847                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5848                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5849                 vf_id -= hw->func_caps.vf_base_id;
5850                 vf = &pf->vf[vf_id];
5851                 i40e_vc_notify_vf_reset(vf);
5852                 /* Allow VF to process pending reset notification */
5853                 msleep(20);
5854                 i40e_reset_vf(vf, false);
5855         }
5856 }
5857
5858 /**
5859  * i40e_service_event_complete - Finish up the service event
5860  * @pf: board private structure
5861  **/
5862 static void i40e_service_event_complete(struct i40e_pf *pf)
5863 {
5864         WARN_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5865
5866         /* flush memory to make sure state is correct before next watchog */
5867         smp_mb__before_atomic();
5868         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5869 }
5870
5871 /**
5872  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5873  * @pf: board private structure
5874  **/
5875 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5876 {
5877         u32 val, fcnt_prog;
5878
5879         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5880         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5881         return fcnt_prog;
5882 }
5883
5884 /**
5885  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5886  * @pf: board private structure
5887  **/
5888 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5889 {
5890         u32 val, fcnt_prog;
5891
5892         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5893         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5894                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5895                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5896         return fcnt_prog;
5897 }
5898
5899 /**
5900  * i40e_get_global_fd_count - Get total FD filters programmed on device
5901  * @pf: board private structure
5902  **/
5903 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5904 {
5905         u32 val, fcnt_prog;
5906
5907         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5908         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5909                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5910                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5911         return fcnt_prog;
5912 }
5913
5914 /**
5915  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5916  * @pf: board private structure
5917  **/
5918 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5919 {
5920         struct i40e_fdir_filter *filter;
5921         u32 fcnt_prog, fcnt_avail;
5922         struct hlist_node *node;
5923
5924         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5925                 return;
5926
5927         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5928          * to re-enable
5929          */
5930         fcnt_prog = i40e_get_global_fd_count(pf);
5931         fcnt_avail = pf->fdir_pf_filter_count;
5932         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5933             (pf->fd_add_err == 0) ||
5934             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5935                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5936                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5937                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5938                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5939                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5940                 }
5941         }
5942
5943         /* Wait for some more space to be available to turn on ATR. We also
5944          * must check that no existing ntuple rules for TCP are in effect
5945          */
5946         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5947                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5948                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED) &&
5949                     (pf->fd_tcp_rule == 0)) {
5950                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5951                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5952                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table and there are no conflicting ntuple rules\n");
5953                 }
5954         }
5955
5956         /* if hw had a problem adding a filter, delete it */
5957         if (pf->fd_inv > 0) {
5958                 hlist_for_each_entry_safe(filter, node,
5959                                           &pf->fdir_filter_list, fdir_node) {
5960                         if (filter->fd_id == pf->fd_inv) {
5961                                 hlist_del(&filter->fdir_node);
5962                                 kfree(filter);
5963                                 pf->fdir_pf_active_filters--;
5964                         }
5965                 }
5966         }
5967 }
5968
5969 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5970 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5971 /**
5972  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5973  * @pf: board private structure
5974  **/
5975 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5976 {
5977         unsigned long min_flush_time;
5978         int flush_wait_retry = 50;
5979         bool disable_atr = false;
5980         int fd_room;
5981         int reg;
5982
5983         if (!time_after(jiffies, pf->fd_flush_timestamp +
5984                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
5985                 return;
5986
5987         /* If the flush is happening too quick and we have mostly SB rules we
5988          * should not re-enable ATR for some time.
5989          */
5990         min_flush_time = pf->fd_flush_timestamp +
5991                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5992         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5993
5994         if (!(time_after(jiffies, min_flush_time)) &&
5995             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5996                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5997                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5998                 disable_atr = true;
5999         }
6000
6001         pf->fd_flush_timestamp = jiffies;
6002         pf->auto_disable_flags |= I40E_FLAG_FD_ATR_ENABLED;
6003         /* flush all filters */
6004         wr32(&pf->hw, I40E_PFQF_CTL_1,
6005              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
6006         i40e_flush(&pf->hw);
6007         pf->fd_flush_cnt++;
6008         pf->fd_add_err = 0;
6009         do {
6010                 /* Check FD flush status every 5-6msec */
6011                 usleep_range(5000, 6000);
6012                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
6013                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
6014                         break;
6015         } while (flush_wait_retry--);
6016         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
6017                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
6018         } else {
6019                 /* replay sideband filters */
6020                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
6021                 if (!disable_atr)
6022                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
6023                 clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
6024                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
6025                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
6026         }
6027 }
6028
6029 /**
6030  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
6031  * @pf: board private structure
6032  **/
6033 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
6034 {
6035         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
6036 }
6037
6038 /* We can see up to 256 filter programming desc in transit if the filters are
6039  * being applied really fast; before we see the first
6040  * filter miss error on Rx queue 0. Accumulating enough error messages before
6041  * reacting will make sure we don't cause flush too often.
6042  */
6043 #define I40E_MAX_FD_PROGRAM_ERROR 256
6044
6045 /**
6046  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
6047  * @pf: board private structure
6048  **/
6049 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
6050 {
6051
6052         /* if interface is down do nothing */
6053         if (test_bit(__I40E_DOWN, &pf->state))
6054                 return;
6055
6056         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
6057                 i40e_fdir_flush_and_replay(pf);
6058
6059         i40e_fdir_check_and_reenable(pf);
6060
6061 }
6062
6063 /**
6064  * i40e_vsi_link_event - notify VSI of a link event
6065  * @vsi: vsi to be notified
6066  * @link_up: link up or down
6067  **/
6068 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
6069 {
6070         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
6071                 return;
6072
6073         switch (vsi->type) {
6074         case I40E_VSI_MAIN:
6075 #ifdef I40E_FCOE
6076         case I40E_VSI_FCOE:
6077 #endif
6078                 if (!vsi->netdev || !vsi->netdev_registered)
6079                         break;
6080
6081                 if (link_up) {
6082                         netif_carrier_on(vsi->netdev);
6083                         netif_tx_wake_all_queues(vsi->netdev);
6084                 } else {
6085                         netif_carrier_off(vsi->netdev);
6086                         netif_tx_stop_all_queues(vsi->netdev);
6087                 }
6088                 break;
6089
6090         case I40E_VSI_SRIOV:
6091         case I40E_VSI_VMDQ2:
6092         case I40E_VSI_CTRL:
6093         case I40E_VSI_IWARP:
6094         case I40E_VSI_MIRROR:
6095         default:
6096                 /* there is no notification for other VSIs */
6097                 break;
6098         }
6099 }
6100
6101 /**
6102  * i40e_veb_link_event - notify elements on the veb of a link event
6103  * @veb: veb to be notified
6104  * @link_up: link up or down
6105  **/
6106 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
6107 {
6108         struct i40e_pf *pf;
6109         int i;
6110
6111         if (!veb || !veb->pf)
6112                 return;
6113         pf = veb->pf;
6114
6115         /* depth first... */
6116         for (i = 0; i < I40E_MAX_VEB; i++)
6117                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
6118                         i40e_veb_link_event(pf->veb[i], link_up);
6119
6120         /* ... now the local VSIs */
6121         for (i = 0; i < pf->num_alloc_vsi; i++)
6122                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
6123                         i40e_vsi_link_event(pf->vsi[i], link_up);
6124 }
6125
6126 /**
6127  * i40e_link_event - Update netif_carrier status
6128  * @pf: board private structure
6129  **/
6130 static void i40e_link_event(struct i40e_pf *pf)
6131 {
6132         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6133         u8 new_link_speed, old_link_speed;
6134         i40e_status status;
6135         bool new_link, old_link;
6136
6137         /* save off old link status information */
6138         pf->hw.phy.link_info_old = pf->hw.phy.link_info;
6139
6140         /* set this to force the get_link_status call to refresh state */
6141         pf->hw.phy.get_link_info = true;
6142
6143         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
6144
6145         status = i40e_get_link_status(&pf->hw, &new_link);
6146         if (status) {
6147                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
6148                         status);
6149                 return;
6150         }
6151
6152         old_link_speed = pf->hw.phy.link_info_old.link_speed;
6153         new_link_speed = pf->hw.phy.link_info.link_speed;
6154
6155         if (new_link == old_link &&
6156             new_link_speed == old_link_speed &&
6157             (test_bit(__I40E_DOWN, &vsi->state) ||
6158              new_link == netif_carrier_ok(vsi->netdev)))
6159                 return;
6160
6161         if (!test_bit(__I40E_DOWN, &vsi->state))
6162                 i40e_print_link_message(vsi, new_link);
6163
6164         /* Notify the base of the switch tree connected to
6165          * the link.  Floating VEBs are not notified.
6166          */
6167         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
6168                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
6169         else
6170                 i40e_vsi_link_event(vsi, new_link);
6171
6172         if (pf->vf)
6173                 i40e_vc_notify_link_state(pf);
6174
6175         if (pf->flags & I40E_FLAG_PTP)
6176                 i40e_ptp_set_increment(pf);
6177 }
6178
6179 /**
6180  * i40e_watchdog_subtask - periodic checks not using event driven response
6181  * @pf: board private structure
6182  **/
6183 static void i40e_watchdog_subtask(struct i40e_pf *pf)
6184 {
6185         int i;
6186
6187         /* if interface is down do nothing */
6188         if (test_bit(__I40E_DOWN, &pf->state) ||
6189             test_bit(__I40E_CONFIG_BUSY, &pf->state))
6190                 return;
6191
6192         /* make sure we don't do these things too often */
6193         if (time_before(jiffies, (pf->service_timer_previous +
6194                                   pf->service_timer_period)))
6195                 return;
6196         pf->service_timer_previous = jiffies;
6197
6198         if (pf->flags & I40E_FLAG_LINK_POLLING_ENABLED)
6199                 i40e_link_event(pf);
6200
6201         /* Update the stats for active netdevs so the network stack
6202          * can look at updated numbers whenever it cares to
6203          */
6204         for (i = 0; i < pf->num_alloc_vsi; i++)
6205                 if (pf->vsi[i] && pf->vsi[i]->netdev)
6206                         i40e_update_stats(pf->vsi[i]);
6207
6208         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
6209                 /* Update the stats for the active switching components */
6210                 for (i = 0; i < I40E_MAX_VEB; i++)
6211                         if (pf->veb[i])
6212                                 i40e_update_veb_stats(pf->veb[i]);
6213         }
6214
6215         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
6216 }
6217
6218 /**
6219  * i40e_reset_subtask - Set up for resetting the device and driver
6220  * @pf: board private structure
6221  **/
6222 static void i40e_reset_subtask(struct i40e_pf *pf)
6223 {
6224         u32 reset_flags = 0;
6225
6226         rtnl_lock();
6227         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
6228                 reset_flags |= BIT(__I40E_REINIT_REQUESTED);
6229                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
6230         }
6231         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
6232                 reset_flags |= BIT(__I40E_PF_RESET_REQUESTED);
6233                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6234         }
6235         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
6236                 reset_flags |= BIT(__I40E_CORE_RESET_REQUESTED);
6237                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
6238         }
6239         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
6240                 reset_flags |= BIT(__I40E_GLOBAL_RESET_REQUESTED);
6241                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
6242         }
6243         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
6244                 reset_flags |= BIT(__I40E_DOWN_REQUESTED);
6245                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
6246         }
6247
6248         /* If there's a recovery already waiting, it takes
6249          * precedence before starting a new reset sequence.
6250          */
6251         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
6252                 i40e_handle_reset_warning(pf);
6253                 goto unlock;
6254         }
6255
6256         /* If we're already down or resetting, just bail */
6257         if (reset_flags &&
6258             !test_bit(__I40E_DOWN, &pf->state) &&
6259             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
6260                 i40e_do_reset(pf, reset_flags);
6261
6262 unlock:
6263         rtnl_unlock();
6264 }
6265
6266 /**
6267  * i40e_handle_link_event - Handle link event
6268  * @pf: board private structure
6269  * @e: event info posted on ARQ
6270  **/
6271 static void i40e_handle_link_event(struct i40e_pf *pf,
6272                                    struct i40e_arq_event_info *e)
6273 {
6274         struct i40e_aqc_get_link_status *status =
6275                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
6276
6277         /* Do a new status request to re-enable LSE reporting
6278          * and load new status information into the hw struct
6279          * This completely ignores any state information
6280          * in the ARQ event info, instead choosing to always
6281          * issue the AQ update link status command.
6282          */
6283         i40e_link_event(pf);
6284
6285         /* check for unqualified module, if link is down */
6286         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
6287             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
6288             (!(status->link_info & I40E_AQ_LINK_UP)))
6289                 dev_err(&pf->pdev->dev,
6290                         "The driver failed to link because an unqualified module was detected.\n");
6291 }
6292
6293 /**
6294  * i40e_clean_adminq_subtask - Clean the AdminQ rings
6295  * @pf: board private structure
6296  **/
6297 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6298 {
6299         struct i40e_arq_event_info event;
6300         struct i40e_hw *hw = &pf->hw;
6301         u16 pending, i = 0;
6302         i40e_status ret;
6303         u16 opcode;
6304         u32 oldval;
6305         u32 val;
6306
6307         /* Do not run clean AQ when PF reset fails */
6308         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6309                 return;
6310
6311         /* check for error indications */
6312         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6313         oldval = val;
6314         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6315                 if (hw->debug_mask & I40E_DEBUG_AQ)
6316                         dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6317                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6318         }
6319         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6320                 if (hw->debug_mask & I40E_DEBUG_AQ)
6321                         dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6322                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6323                 pf->arq_overflows++;
6324         }
6325         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6326                 if (hw->debug_mask & I40E_DEBUG_AQ)
6327                         dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6328                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6329         }
6330         if (oldval != val)
6331                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6332
6333         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6334         oldval = val;
6335         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6336                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6337                         dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6338                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6339         }
6340         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6341                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6342                         dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6343                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6344         }
6345         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6346                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6347                         dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6348                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6349         }
6350         if (oldval != val)
6351                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6352
6353         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6354         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6355         if (!event.msg_buf)
6356                 return;
6357
6358         do {
6359                 ret = i40e_clean_arq_element(hw, &event, &pending);
6360                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6361                         break;
6362                 else if (ret) {
6363                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6364                         break;
6365                 }
6366
6367                 opcode = le16_to_cpu(event.desc.opcode);
6368                 switch (opcode) {
6369
6370                 case i40e_aqc_opc_get_link_status:
6371                         i40e_handle_link_event(pf, &event);
6372                         break;
6373                 case i40e_aqc_opc_send_msg_to_pf:
6374                         ret = i40e_vc_process_vf_msg(pf,
6375                                         le16_to_cpu(event.desc.retval),
6376                                         le32_to_cpu(event.desc.cookie_high),
6377                                         le32_to_cpu(event.desc.cookie_low),
6378                                         event.msg_buf,
6379                                         event.msg_len);
6380                         break;
6381                 case i40e_aqc_opc_lldp_update_mib:
6382                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6383 #ifdef CONFIG_I40E_DCB
6384                         rtnl_lock();
6385                         ret = i40e_handle_lldp_event(pf, &event);
6386                         rtnl_unlock();
6387 #endif /* CONFIG_I40E_DCB */
6388                         break;
6389                 case i40e_aqc_opc_event_lan_overflow:
6390                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6391                         i40e_handle_lan_overflow_event(pf, &event);
6392                         break;
6393                 case i40e_aqc_opc_send_msg_to_peer:
6394                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6395                         break;
6396                 case i40e_aqc_opc_nvm_erase:
6397                 case i40e_aqc_opc_nvm_update:
6398                 case i40e_aqc_opc_oem_post_update:
6399                         i40e_debug(&pf->hw, I40E_DEBUG_NVM,
6400                                    "ARQ NVM operation 0x%04x completed\n",
6401                                    opcode);
6402                         break;
6403                 default:
6404                         dev_info(&pf->pdev->dev,
6405                                  "ARQ: Unknown event 0x%04x ignored\n",
6406                                  opcode);
6407                         break;
6408                 }
6409         } while (pending && (i++ < pf->adminq_work_limit));
6410
6411         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6412         /* re-enable Admin queue interrupt cause */
6413         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6414         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6415         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6416         i40e_flush(hw);
6417
6418         kfree(event.msg_buf);
6419 }
6420
6421 /**
6422  * i40e_verify_eeprom - make sure eeprom is good to use
6423  * @pf: board private structure
6424  **/
6425 static void i40e_verify_eeprom(struct i40e_pf *pf)
6426 {
6427         int err;
6428
6429         err = i40e_diag_eeprom_test(&pf->hw);
6430         if (err) {
6431                 /* retry in case of garbage read */
6432                 err = i40e_diag_eeprom_test(&pf->hw);
6433                 if (err) {
6434                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6435                                  err);
6436                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6437                 }
6438         }
6439
6440         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6441                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6442                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6443         }
6444 }
6445
6446 /**
6447  * i40e_enable_pf_switch_lb
6448  * @pf: pointer to the PF structure
6449  *
6450  * enable switch loop back or die - no point in a return value
6451  **/
6452 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6453 {
6454         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6455         struct i40e_vsi_context ctxt;
6456         int ret;
6457
6458         ctxt.seid = pf->main_vsi_seid;
6459         ctxt.pf_num = pf->hw.pf_id;
6460         ctxt.vf_num = 0;
6461         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6462         if (ret) {
6463                 dev_info(&pf->pdev->dev,
6464                          "couldn't get PF vsi config, err %s aq_err %s\n",
6465                          i40e_stat_str(&pf->hw, ret),
6466                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6467                 return;
6468         }
6469         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6470         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6471         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6472
6473         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6474         if (ret) {
6475                 dev_info(&pf->pdev->dev,
6476                          "update vsi switch failed, err %s aq_err %s\n",
6477                          i40e_stat_str(&pf->hw, ret),
6478                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6479         }
6480 }
6481
6482 /**
6483  * i40e_disable_pf_switch_lb
6484  * @pf: pointer to the PF structure
6485  *
6486  * disable switch loop back or die - no point in a return value
6487  **/
6488 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6489 {
6490         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6491         struct i40e_vsi_context ctxt;
6492         int ret;
6493
6494         ctxt.seid = pf->main_vsi_seid;
6495         ctxt.pf_num = pf->hw.pf_id;
6496         ctxt.vf_num = 0;
6497         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6498         if (ret) {
6499                 dev_info(&pf->pdev->dev,
6500                          "couldn't get PF vsi config, err %s aq_err %s\n",
6501                          i40e_stat_str(&pf->hw, ret),
6502                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6503                 return;
6504         }
6505         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6506         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6507         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6508
6509         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6510         if (ret) {
6511                 dev_info(&pf->pdev->dev,
6512                          "update vsi switch failed, err %s aq_err %s\n",
6513                          i40e_stat_str(&pf->hw, ret),
6514                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6515         }
6516 }
6517
6518 /**
6519  * i40e_config_bridge_mode - Configure the HW bridge mode
6520  * @veb: pointer to the bridge instance
6521  *
6522  * Configure the loop back mode for the LAN VSI that is downlink to the
6523  * specified HW bridge instance. It is expected this function is called
6524  * when a new HW bridge is instantiated.
6525  **/
6526 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6527 {
6528         struct i40e_pf *pf = veb->pf;
6529
6530         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
6531                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6532                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6533         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6534                 i40e_disable_pf_switch_lb(pf);
6535         else
6536                 i40e_enable_pf_switch_lb(pf);
6537 }
6538
6539 /**
6540  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6541  * @veb: pointer to the VEB instance
6542  *
6543  * This is a recursive function that first builds the attached VSIs then
6544  * recurses in to build the next layer of VEB.  We track the connections
6545  * through our own index numbers because the seid's from the HW could
6546  * change across the reset.
6547  **/
6548 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6549 {
6550         struct i40e_vsi *ctl_vsi = NULL;
6551         struct i40e_pf *pf = veb->pf;
6552         int v, veb_idx;
6553         int ret;
6554
6555         /* build VSI that owns this VEB, temporarily attached to base VEB */
6556         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6557                 if (pf->vsi[v] &&
6558                     pf->vsi[v]->veb_idx == veb->idx &&
6559                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6560                         ctl_vsi = pf->vsi[v];
6561                         break;
6562                 }
6563         }
6564         if (!ctl_vsi) {
6565                 dev_info(&pf->pdev->dev,
6566                          "missing owner VSI for veb_idx %d\n", veb->idx);
6567                 ret = -ENOENT;
6568                 goto end_reconstitute;
6569         }
6570         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6571                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6572         ret = i40e_add_vsi(ctl_vsi);
6573         if (ret) {
6574                 dev_info(&pf->pdev->dev,
6575                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6576                          veb->idx, ret);
6577                 goto end_reconstitute;
6578         }
6579         i40e_vsi_reset_stats(ctl_vsi);
6580
6581         /* create the VEB in the switch and move the VSI onto the VEB */
6582         ret = i40e_add_veb(veb, ctl_vsi);
6583         if (ret)
6584                 goto end_reconstitute;
6585
6586         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6587                 veb->bridge_mode = BRIDGE_MODE_VEB;
6588         else
6589                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6590         i40e_config_bridge_mode(veb);
6591
6592         /* create the remaining VSIs attached to this VEB */
6593         for (v = 0; v < pf->num_alloc_vsi; v++) {
6594                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6595                         continue;
6596
6597                 if (pf->vsi[v]->veb_idx == veb->idx) {
6598                         struct i40e_vsi *vsi = pf->vsi[v];
6599
6600                         vsi->uplink_seid = veb->seid;
6601                         ret = i40e_add_vsi(vsi);
6602                         if (ret) {
6603                                 dev_info(&pf->pdev->dev,
6604                                          "rebuild of vsi_idx %d failed: %d\n",
6605                                          v, ret);
6606                                 goto end_reconstitute;
6607                         }
6608                         i40e_vsi_reset_stats(vsi);
6609                 }
6610         }
6611
6612         /* create any VEBs attached to this VEB - RECURSION */
6613         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6614                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6615                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6616                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6617                         if (ret)
6618                                 break;
6619                 }
6620         }
6621
6622 end_reconstitute:
6623         return ret;
6624 }
6625
6626 /**
6627  * i40e_get_capabilities - get info about the HW
6628  * @pf: the PF struct
6629  **/
6630 static int i40e_get_capabilities(struct i40e_pf *pf)
6631 {
6632         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6633         u16 data_size;
6634         int buf_len;
6635         int err;
6636
6637         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6638         do {
6639                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6640                 if (!cap_buf)
6641                         return -ENOMEM;
6642
6643                 /* this loads the data into the hw struct for us */
6644                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6645                                             &data_size,
6646                                             i40e_aqc_opc_list_func_capabilities,
6647                                             NULL);
6648                 /* data loaded, buffer no longer needed */
6649                 kfree(cap_buf);
6650
6651                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6652                         /* retry with a larger buffer */
6653                         buf_len = data_size;
6654                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6655                         dev_info(&pf->pdev->dev,
6656                                  "capability discovery failed, err %s aq_err %s\n",
6657                                  i40e_stat_str(&pf->hw, err),
6658                                  i40e_aq_str(&pf->hw,
6659                                              pf->hw.aq.asq_last_status));
6660                         return -ENODEV;
6661                 }
6662         } while (err);
6663
6664         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6665                 dev_info(&pf->pdev->dev,
6666                          "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",
6667                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6668                          pf->hw.func_caps.num_msix_vectors,
6669                          pf->hw.func_caps.num_msix_vectors_vf,
6670                          pf->hw.func_caps.fd_filters_guaranteed,
6671                          pf->hw.func_caps.fd_filters_best_effort,
6672                          pf->hw.func_caps.num_tx_qp,
6673                          pf->hw.func_caps.num_vsis);
6674
6675 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6676                        + pf->hw.func_caps.num_vfs)
6677         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6678                 dev_info(&pf->pdev->dev,
6679                          "got num_vsis %d, setting num_vsis to %d\n",
6680                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6681                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6682         }
6683
6684         return 0;
6685 }
6686
6687 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6688
6689 /**
6690  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6691  * @pf: board private structure
6692  **/
6693 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6694 {
6695         struct i40e_vsi *vsi;
6696         int i;
6697
6698         /* quick workaround for an NVM issue that leaves a critical register
6699          * uninitialized
6700          */
6701         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6702                 static const u32 hkey[] = {
6703                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6704                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6705                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6706                         0x95b3a76d};
6707
6708                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6709                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6710         }
6711
6712         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6713                 return;
6714
6715         /* find existing VSI and see if it needs configuring */
6716         vsi = NULL;
6717         for (i = 0; i < pf->num_alloc_vsi; i++) {
6718                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6719                         vsi = pf->vsi[i];
6720                         break;
6721                 }
6722         }
6723
6724         /* create a new VSI if none exists */
6725         if (!vsi) {
6726                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6727                                      pf->vsi[pf->lan_vsi]->seid, 0);
6728                 if (!vsi) {
6729                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6730                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6731                         return;
6732                 }
6733         }
6734
6735         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6736 }
6737
6738 /**
6739  * i40e_fdir_teardown - release the Flow Director resources
6740  * @pf: board private structure
6741  **/
6742 static void i40e_fdir_teardown(struct i40e_pf *pf)
6743 {
6744         int i;
6745
6746         i40e_fdir_filter_exit(pf);
6747         for (i = 0; i < pf->num_alloc_vsi; i++) {
6748                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6749                         i40e_vsi_release(pf->vsi[i]);
6750                         break;
6751                 }
6752         }
6753 }
6754
6755 /**
6756  * i40e_prep_for_reset - prep for the core to reset
6757  * @pf: board private structure
6758  *
6759  * Close up the VFs and other things in prep for PF Reset.
6760   **/
6761 static void i40e_prep_for_reset(struct i40e_pf *pf)
6762 {
6763         struct i40e_hw *hw = &pf->hw;
6764         i40e_status ret = 0;
6765         u32 v;
6766
6767         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6768         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6769                 return;
6770         if (i40e_check_asq_alive(&pf->hw))
6771                 i40e_vc_notify_reset(pf);
6772
6773         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6774
6775         /* quiesce the VSIs and their queues that are not already DOWN */
6776         i40e_pf_quiesce_all_vsi(pf);
6777
6778         for (v = 0; v < pf->num_alloc_vsi; v++) {
6779                 if (pf->vsi[v])
6780                         pf->vsi[v]->seid = 0;
6781         }
6782
6783         i40e_shutdown_adminq(&pf->hw);
6784
6785         /* call shutdown HMC */
6786         if (hw->hmc.hmc_obj) {
6787                 ret = i40e_shutdown_lan_hmc(hw);
6788                 if (ret)
6789                         dev_warn(&pf->pdev->dev,
6790                                  "shutdown_lan_hmc failed: %d\n", ret);
6791         }
6792 }
6793
6794 /**
6795  * i40e_send_version - update firmware with driver version
6796  * @pf: PF struct
6797  */
6798 static void i40e_send_version(struct i40e_pf *pf)
6799 {
6800         struct i40e_driver_version dv;
6801
6802         dv.major_version = DRV_VERSION_MAJOR;
6803         dv.minor_version = DRV_VERSION_MINOR;
6804         dv.build_version = DRV_VERSION_BUILD;
6805         dv.subbuild_version = 0;
6806         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6807         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6808 }
6809
6810 /**
6811  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6812  * @pf: board private structure
6813  * @reinit: if the Main VSI needs to re-initialized.
6814  **/
6815 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6816 {
6817         struct i40e_hw *hw = &pf->hw;
6818         u8 set_fc_aq_fail = 0;
6819         i40e_status ret;
6820         u32 val;
6821         u32 v;
6822
6823         /* Now we wait for GRST to settle out.
6824          * We don't have to delete the VEBs or VSIs from the hw switch
6825          * because the reset will make them disappear.
6826          */
6827         ret = i40e_pf_reset(hw);
6828         if (ret) {
6829                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6830                 set_bit(__I40E_RESET_FAILED, &pf->state);
6831                 goto clear_recovery;
6832         }
6833         pf->pfr_count++;
6834
6835         if (test_bit(__I40E_DOWN, &pf->state))
6836                 goto clear_recovery;
6837         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6838
6839         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6840         ret = i40e_init_adminq(&pf->hw);
6841         if (ret) {
6842                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6843                          i40e_stat_str(&pf->hw, ret),
6844                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6845                 goto clear_recovery;
6846         }
6847
6848         /* re-verify the eeprom if we just had an EMP reset */
6849         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6850                 i40e_verify_eeprom(pf);
6851
6852         i40e_clear_pxe_mode(hw);
6853         ret = i40e_get_capabilities(pf);
6854         if (ret)
6855                 goto end_core_reset;
6856
6857         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6858                                 hw->func_caps.num_rx_qp,
6859                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6860         if (ret) {
6861                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6862                 goto end_core_reset;
6863         }
6864         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6865         if (ret) {
6866                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6867                 goto end_core_reset;
6868         }
6869
6870 #ifdef CONFIG_I40E_DCB
6871         ret = i40e_init_pf_dcb(pf);
6872         if (ret) {
6873                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6874                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6875                 /* Continue without DCB enabled */
6876         }
6877 #endif /* CONFIG_I40E_DCB */
6878 #ifdef I40E_FCOE
6879         i40e_init_pf_fcoe(pf);
6880
6881 #endif
6882         /* do basic switch setup */
6883         ret = i40e_setup_pf_switch(pf, reinit);
6884         if (ret)
6885                 goto end_core_reset;
6886
6887         /* The driver only wants link up/down and module qualification
6888          * reports from firmware.  Note the negative logic.
6889          */
6890         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6891                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
6892                                          I40E_AQ_EVENT_MEDIA_NA |
6893                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
6894         if (ret)
6895                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6896                          i40e_stat_str(&pf->hw, ret),
6897                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6898
6899         /* make sure our flow control settings are restored */
6900         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6901         if (ret)
6902                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
6903                         i40e_stat_str(&pf->hw, ret),
6904                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6905
6906         /* Rebuild the VSIs and VEBs that existed before reset.
6907          * They are still in our local switch element arrays, so only
6908          * need to rebuild the switch model in the HW.
6909          *
6910          * If there were VEBs but the reconstitution failed, we'll try
6911          * try to recover minimal use by getting the basic PF VSI working.
6912          */
6913         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6914                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6915                 /* find the one VEB connected to the MAC, and find orphans */
6916                 for (v = 0; v < I40E_MAX_VEB; v++) {
6917                         if (!pf->veb[v])
6918                                 continue;
6919
6920                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6921                             pf->veb[v]->uplink_seid == 0) {
6922                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6923
6924                                 if (!ret)
6925                                         continue;
6926
6927                                 /* If Main VEB failed, we're in deep doodoo,
6928                                  * so give up rebuilding the switch and set up
6929                                  * for minimal rebuild of PF VSI.
6930                                  * If orphan failed, we'll report the error
6931                                  * but try to keep going.
6932                                  */
6933                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6934                                         dev_info(&pf->pdev->dev,
6935                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6936                                                  ret);
6937                                         pf->vsi[pf->lan_vsi]->uplink_seid
6938                                                                 = pf->mac_seid;
6939                                         break;
6940                                 } else if (pf->veb[v]->uplink_seid == 0) {
6941                                         dev_info(&pf->pdev->dev,
6942                                                  "rebuild of orphan VEB failed: %d\n",
6943                                                  ret);
6944                                 }
6945                         }
6946                 }
6947         }
6948
6949         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6950                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6951                 /* no VEB, so rebuild only the Main VSI */
6952                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6953                 if (ret) {
6954                         dev_info(&pf->pdev->dev,
6955                                  "rebuild of Main VSI failed: %d\n", ret);
6956                         goto end_core_reset;
6957                 }
6958         }
6959
6960         /* Reconfigure hardware for allowing smaller MSS in the case
6961          * of TSO, so that we avoid the MDD being fired and causing
6962          * a reset in the case of small MSS+TSO.
6963          */
6964 #define I40E_REG_MSS          0x000E64DC
6965 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
6966 #define I40E_64BYTE_MSS       0x400000
6967         val = rd32(hw, I40E_REG_MSS);
6968         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
6969                 val &= ~I40E_REG_MSS_MIN_MASK;
6970                 val |= I40E_64BYTE_MSS;
6971                 wr32(hw, I40E_REG_MSS, val);
6972         }
6973
6974         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
6975                 msleep(75);
6976                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6977                 if (ret)
6978                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6979                                  i40e_stat_str(&pf->hw, ret),
6980                                  i40e_aq_str(&pf->hw,
6981                                              pf->hw.aq.asq_last_status));
6982         }
6983         /* reinit the misc interrupt */
6984         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6985                 ret = i40e_setup_misc_vector(pf);
6986
6987         /* Add a filter to drop all Flow control frames from any VSI from being
6988          * transmitted. By doing so we stop a malicious VF from sending out
6989          * PAUSE or PFC frames and potentially controlling traffic for other
6990          * PF/VF VSIs.
6991          * The FW can still send Flow control frames if enabled.
6992          */
6993         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
6994                                                        pf->main_vsi_seid);
6995
6996         /* restart the VSIs that were rebuilt and running before the reset */
6997         i40e_pf_unquiesce_all_vsi(pf);
6998
6999         if (pf->num_alloc_vfs) {
7000                 for (v = 0; v < pf->num_alloc_vfs; v++)
7001                         i40e_reset_vf(&pf->vf[v], true);
7002         }
7003
7004         /* tell the firmware that we're starting */
7005         i40e_send_version(pf);
7006
7007 end_core_reset:
7008         clear_bit(__I40E_RESET_FAILED, &pf->state);
7009 clear_recovery:
7010         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
7011 }
7012
7013 /**
7014  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
7015  * @pf: board private structure
7016  *
7017  * Close up the VFs and other things in prep for a Core Reset,
7018  * then get ready to rebuild the world.
7019  **/
7020 static void i40e_handle_reset_warning(struct i40e_pf *pf)
7021 {
7022         i40e_prep_for_reset(pf);
7023         i40e_reset_and_rebuild(pf, false);
7024 }
7025
7026 /**
7027  * i40e_handle_mdd_event
7028  * @pf: pointer to the PF structure
7029  *
7030  * Called from the MDD irq handler to identify possibly malicious vfs
7031  **/
7032 static void i40e_handle_mdd_event(struct i40e_pf *pf)
7033 {
7034         struct i40e_hw *hw = &pf->hw;
7035         bool mdd_detected = false;
7036         bool pf_mdd_detected = false;
7037         struct i40e_vf *vf;
7038         u32 reg;
7039         int i;
7040
7041         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
7042                 return;
7043
7044         /* find what triggered the MDD event */
7045         reg = rd32(hw, I40E_GL_MDET_TX);
7046         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
7047                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
7048                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
7049                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
7050                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
7051                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
7052                                 I40E_GL_MDET_TX_EVENT_SHIFT;
7053                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
7054                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
7055                                 pf->hw.func_caps.base_queue;
7056                 if (netif_msg_tx_err(pf))
7057                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
7058                                  event, queue, pf_num, vf_num);
7059                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
7060                 mdd_detected = true;
7061         }
7062         reg = rd32(hw, I40E_GL_MDET_RX);
7063         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
7064                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
7065                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
7066                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
7067                                 I40E_GL_MDET_RX_EVENT_SHIFT;
7068                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
7069                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
7070                                 pf->hw.func_caps.base_queue;
7071                 if (netif_msg_rx_err(pf))
7072                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
7073                                  event, queue, func);
7074                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
7075                 mdd_detected = true;
7076         }
7077
7078         if (mdd_detected) {
7079                 reg = rd32(hw, I40E_PF_MDET_TX);
7080                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
7081                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
7082                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
7083                         pf_mdd_detected = true;
7084                 }
7085                 reg = rd32(hw, I40E_PF_MDET_RX);
7086                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
7087                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
7088                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
7089                         pf_mdd_detected = true;
7090                 }
7091                 /* Queue belongs to the PF, initiate a reset */
7092                 if (pf_mdd_detected) {
7093                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
7094                         i40e_service_event_schedule(pf);
7095                 }
7096         }
7097
7098         /* see if one of the VFs needs its hand slapped */
7099         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
7100                 vf = &(pf->vf[i]);
7101                 reg = rd32(hw, I40E_VP_MDET_TX(i));
7102                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
7103                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
7104                         vf->num_mdd_events++;
7105                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
7106                                  i);
7107                 }
7108
7109                 reg = rd32(hw, I40E_VP_MDET_RX(i));
7110                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
7111                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
7112                         vf->num_mdd_events++;
7113                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
7114                                  i);
7115                 }
7116
7117                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
7118                         dev_info(&pf->pdev->dev,
7119                                  "Too many MDD events on VF %d, disabled\n", i);
7120                         dev_info(&pf->pdev->dev,
7121                                  "Use PF Control I/F to re-enable the VF\n");
7122                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
7123                 }
7124         }
7125
7126         /* re-enable mdd interrupt cause */
7127         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
7128         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
7129         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
7130         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
7131         i40e_flush(hw);
7132 }
7133
7134 /**
7135  * i40e_sync_udp_filters_subtask - Sync the VSI filter list with HW
7136  * @pf: board private structure
7137  **/
7138 static void i40e_sync_udp_filters_subtask(struct i40e_pf *pf)
7139 {
7140         struct i40e_hw *hw = &pf->hw;
7141         i40e_status ret;
7142         __be16 port;
7143         int i;
7144
7145         if (!(pf->flags & I40E_FLAG_UDP_FILTER_SYNC))
7146                 return;
7147
7148         pf->flags &= ~I40E_FLAG_UDP_FILTER_SYNC;
7149
7150         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7151                 if (pf->pending_udp_bitmap & BIT_ULL(i)) {
7152                         pf->pending_udp_bitmap &= ~BIT_ULL(i);
7153                         port = pf->udp_ports[i].index;
7154                         if (port)
7155                                 ret = i40e_aq_add_udp_tunnel(hw, port,
7156                                                         pf->udp_ports[i].type,
7157                                                         NULL, NULL);
7158                         else
7159                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
7160
7161                         if (ret) {
7162                                 dev_dbg(&pf->pdev->dev,
7163                                         "%s %s port %d, index %d failed, err %s aq_err %s\n",
7164                                         pf->udp_ports[i].type ? "vxlan" : "geneve",
7165                                         port ? "add" : "delete",
7166                                         ntohs(port), i,
7167                                         i40e_stat_str(&pf->hw, ret),
7168                                         i40e_aq_str(&pf->hw,
7169                                                     pf->hw.aq.asq_last_status));
7170                                 pf->udp_ports[i].index = 0;
7171                         }
7172                 }
7173         }
7174 }
7175
7176 /**
7177  * i40e_service_task - Run the driver's async subtasks
7178  * @work: pointer to work_struct containing our data
7179  **/
7180 static void i40e_service_task(struct work_struct *work)
7181 {
7182         struct i40e_pf *pf = container_of(work,
7183                                           struct i40e_pf,
7184                                           service_task);
7185         unsigned long start_time = jiffies;
7186
7187         /* don't bother with service tasks if a reset is in progress */
7188         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7189                 i40e_service_event_complete(pf);
7190                 return;
7191         }
7192
7193         i40e_detect_recover_hung(pf);
7194         i40e_sync_filters_subtask(pf);
7195         i40e_reset_subtask(pf);
7196         i40e_handle_mdd_event(pf);
7197         i40e_vc_process_vflr_event(pf);
7198         i40e_watchdog_subtask(pf);
7199         i40e_fdir_reinit_subtask(pf);
7200         i40e_client_subtask(pf);
7201         i40e_sync_filters_subtask(pf);
7202         i40e_sync_udp_filters_subtask(pf);
7203         i40e_clean_adminq_subtask(pf);
7204
7205         i40e_service_event_complete(pf);
7206
7207         /* If the tasks have taken longer than one timer cycle or there
7208          * is more work to be done, reschedule the service task now
7209          * rather than wait for the timer to tick again.
7210          */
7211         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
7212             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
7213             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
7214             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
7215                 i40e_service_event_schedule(pf);
7216 }
7217
7218 /**
7219  * i40e_service_timer - timer callback
7220  * @data: pointer to PF struct
7221  **/
7222 static void i40e_service_timer(unsigned long data)
7223 {
7224         struct i40e_pf *pf = (struct i40e_pf *)data;
7225
7226         mod_timer(&pf->service_timer,
7227                   round_jiffies(jiffies + pf->service_timer_period));
7228         i40e_service_event_schedule(pf);
7229 }
7230
7231 /**
7232  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
7233  * @vsi: the VSI being configured
7234  **/
7235 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
7236 {
7237         struct i40e_pf *pf = vsi->back;
7238
7239         switch (vsi->type) {
7240         case I40E_VSI_MAIN:
7241                 vsi->alloc_queue_pairs = pf->num_lan_qps;
7242                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7243                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7244                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7245                         vsi->num_q_vectors = pf->num_lan_msix;
7246                 else
7247                         vsi->num_q_vectors = 1;
7248
7249                 break;
7250
7251         case I40E_VSI_FDIR:
7252                 vsi->alloc_queue_pairs = 1;
7253                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
7254                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7255                 vsi->num_q_vectors = pf->num_fdsb_msix;
7256                 break;
7257
7258         case I40E_VSI_VMDQ2:
7259                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
7260                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7261                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7262                 vsi->num_q_vectors = pf->num_vmdq_msix;
7263                 break;
7264
7265         case I40E_VSI_SRIOV:
7266                 vsi->alloc_queue_pairs = pf->num_vf_qps;
7267                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7268                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7269                 break;
7270
7271 #ifdef I40E_FCOE
7272         case I40E_VSI_FCOE:
7273                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
7274                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7275                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7276                 vsi->num_q_vectors = pf->num_fcoe_msix;
7277                 break;
7278
7279 #endif /* I40E_FCOE */
7280         default:
7281                 WARN_ON(1);
7282                 return -ENODATA;
7283         }
7284
7285         return 0;
7286 }
7287
7288 /**
7289  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
7290  * @type: VSI pointer
7291  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
7292  *
7293  * On error: returns error code (negative)
7294  * On success: returns 0
7295  **/
7296 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
7297 {
7298         int size;
7299         int ret = 0;
7300
7301         /* allocate memory for both Tx and Rx ring pointers */
7302         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
7303         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
7304         if (!vsi->tx_rings)
7305                 return -ENOMEM;
7306         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
7307
7308         if (alloc_qvectors) {
7309                 /* allocate memory for q_vector pointers */
7310                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
7311                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
7312                 if (!vsi->q_vectors) {
7313                         ret = -ENOMEM;
7314                         goto err_vectors;
7315                 }
7316         }
7317         return ret;
7318
7319 err_vectors:
7320         kfree(vsi->tx_rings);
7321         return ret;
7322 }
7323
7324 /**
7325  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
7326  * @pf: board private structure
7327  * @type: type of VSI
7328  *
7329  * On error: returns error code (negative)
7330  * On success: returns vsi index in PF (positive)
7331  **/
7332 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7333 {
7334         int ret = -ENODEV;
7335         struct i40e_vsi *vsi;
7336         int vsi_idx;
7337         int i;
7338
7339         /* Need to protect the allocation of the VSIs at the PF level */
7340         mutex_lock(&pf->switch_mutex);
7341
7342         /* VSI list may be fragmented if VSI creation/destruction has
7343          * been happening.  We can afford to do a quick scan to look
7344          * for any free VSIs in the list.
7345          *
7346          * find next empty vsi slot, looping back around if necessary
7347          */
7348         i = pf->next_vsi;
7349         while (i < pf->num_alloc_vsi && pf->vsi[i])
7350                 i++;
7351         if (i >= pf->num_alloc_vsi) {
7352                 i = 0;
7353                 while (i < pf->next_vsi && pf->vsi[i])
7354                         i++;
7355         }
7356
7357         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7358                 vsi_idx = i;             /* Found one! */
7359         } else {
7360                 ret = -ENODEV;
7361                 goto unlock_pf;  /* out of VSI slots! */
7362         }
7363         pf->next_vsi = ++i;
7364
7365         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7366         if (!vsi) {
7367                 ret = -ENOMEM;
7368                 goto unlock_pf;
7369         }
7370         vsi->type = type;
7371         vsi->back = pf;
7372         set_bit(__I40E_DOWN, &vsi->state);
7373         vsi->flags = 0;
7374         vsi->idx = vsi_idx;
7375         vsi->int_rate_limit = 0;
7376         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7377                                 pf->rss_table_size : 64;
7378         vsi->netdev_registered = false;
7379         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7380         INIT_LIST_HEAD(&vsi->mac_filter_list);
7381         vsi->irqs_ready = false;
7382
7383         ret = i40e_set_num_rings_in_vsi(vsi);
7384         if (ret)
7385                 goto err_rings;
7386
7387         ret = i40e_vsi_alloc_arrays(vsi, true);
7388         if (ret)
7389                 goto err_rings;
7390
7391         /* Setup default MSIX irq handler for VSI */
7392         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7393
7394         /* Initialize VSI lock */
7395         spin_lock_init(&vsi->mac_filter_list_lock);
7396         pf->vsi[vsi_idx] = vsi;
7397         ret = vsi_idx;
7398         goto unlock_pf;
7399
7400 err_rings:
7401         pf->next_vsi = i - 1;
7402         kfree(vsi);
7403 unlock_pf:
7404         mutex_unlock(&pf->switch_mutex);
7405         return ret;
7406 }
7407
7408 /**
7409  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7410  * @type: VSI pointer
7411  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7412  *
7413  * On error: returns error code (negative)
7414  * On success: returns 0
7415  **/
7416 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7417 {
7418         /* free the ring and vector containers */
7419         if (free_qvectors) {
7420                 kfree(vsi->q_vectors);
7421                 vsi->q_vectors = NULL;
7422         }
7423         kfree(vsi->tx_rings);
7424         vsi->tx_rings = NULL;
7425         vsi->rx_rings = NULL;
7426 }
7427
7428 /**
7429  * i40e_clear_rss_config_user - clear the user configured RSS hash keys
7430  * and lookup table
7431  * @vsi: Pointer to VSI structure
7432  */
7433 static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
7434 {
7435         if (!vsi)
7436                 return;
7437
7438         kfree(vsi->rss_hkey_user);
7439         vsi->rss_hkey_user = NULL;
7440
7441         kfree(vsi->rss_lut_user);
7442         vsi->rss_lut_user = NULL;
7443 }
7444
7445 /**
7446  * i40e_vsi_clear - Deallocate the VSI provided
7447  * @vsi: the VSI being un-configured
7448  **/
7449 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7450 {
7451         struct i40e_pf *pf;
7452
7453         if (!vsi)
7454                 return 0;
7455
7456         if (!vsi->back)
7457                 goto free_vsi;
7458         pf = vsi->back;
7459
7460         mutex_lock(&pf->switch_mutex);
7461         if (!pf->vsi[vsi->idx]) {
7462                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7463                         vsi->idx, vsi->idx, vsi, vsi->type);
7464                 goto unlock_vsi;
7465         }
7466
7467         if (pf->vsi[vsi->idx] != vsi) {
7468                 dev_err(&pf->pdev->dev,
7469                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7470                         pf->vsi[vsi->idx]->idx,
7471                         pf->vsi[vsi->idx],
7472                         pf->vsi[vsi->idx]->type,
7473                         vsi->idx, vsi, vsi->type);
7474                 goto unlock_vsi;
7475         }
7476
7477         /* updates the PF for this cleared vsi */
7478         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7479         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7480
7481         i40e_vsi_free_arrays(vsi, true);
7482         i40e_clear_rss_config_user(vsi);
7483
7484         pf->vsi[vsi->idx] = NULL;
7485         if (vsi->idx < pf->next_vsi)
7486                 pf->next_vsi = vsi->idx;
7487
7488 unlock_vsi:
7489         mutex_unlock(&pf->switch_mutex);
7490 free_vsi:
7491         kfree(vsi);
7492
7493         return 0;
7494 }
7495
7496 /**
7497  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7498  * @vsi: the VSI being cleaned
7499  **/
7500 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7501 {
7502         int i;
7503
7504         if (vsi->tx_rings && vsi->tx_rings[0]) {
7505                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7506                         kfree_rcu(vsi->tx_rings[i], rcu);
7507                         vsi->tx_rings[i] = NULL;
7508                         vsi->rx_rings[i] = NULL;
7509                 }
7510         }
7511 }
7512
7513 /**
7514  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7515  * @vsi: the VSI being configured
7516  **/
7517 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7518 {
7519         struct i40e_ring *tx_ring, *rx_ring;
7520         struct i40e_pf *pf = vsi->back;
7521         int i;
7522
7523         /* Set basic values in the rings to be used later during open() */
7524         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7525                 /* allocate space for both Tx and Rx in one shot */
7526                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7527                 if (!tx_ring)
7528                         goto err_out;
7529
7530                 tx_ring->queue_index = i;
7531                 tx_ring->reg_idx = vsi->base_queue + i;
7532                 tx_ring->ring_active = false;
7533                 tx_ring->vsi = vsi;
7534                 tx_ring->netdev = vsi->netdev;
7535                 tx_ring->dev = &pf->pdev->dev;
7536                 tx_ring->count = vsi->num_desc;
7537                 tx_ring->size = 0;
7538                 tx_ring->dcb_tc = 0;
7539                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7540                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7541                 tx_ring->tx_itr_setting = pf->tx_itr_default;
7542                 vsi->tx_rings[i] = tx_ring;
7543
7544                 rx_ring = &tx_ring[1];
7545                 rx_ring->queue_index = i;
7546                 rx_ring->reg_idx = vsi->base_queue + i;
7547                 rx_ring->ring_active = false;
7548                 rx_ring->vsi = vsi;
7549                 rx_ring->netdev = vsi->netdev;
7550                 rx_ring->dev = &pf->pdev->dev;
7551                 rx_ring->count = vsi->num_desc;
7552                 rx_ring->size = 0;
7553                 rx_ring->dcb_tc = 0;
7554                 rx_ring->rx_itr_setting = pf->rx_itr_default;
7555                 vsi->rx_rings[i] = rx_ring;
7556         }
7557
7558         return 0;
7559
7560 err_out:
7561         i40e_vsi_clear_rings(vsi);
7562         return -ENOMEM;
7563 }
7564
7565 /**
7566  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7567  * @pf: board private structure
7568  * @vectors: the number of MSI-X vectors to request
7569  *
7570  * Returns the number of vectors reserved, or error
7571  **/
7572 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7573 {
7574         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7575                                         I40E_MIN_MSIX, vectors);
7576         if (vectors < 0) {
7577                 dev_info(&pf->pdev->dev,
7578                          "MSI-X vector reservation failed: %d\n", vectors);
7579                 vectors = 0;
7580         }
7581
7582         return vectors;
7583 }
7584
7585 /**
7586  * i40e_init_msix - Setup the MSIX capability
7587  * @pf: board private structure
7588  *
7589  * Work with the OS to set up the MSIX vectors needed.
7590  *
7591  * Returns the number of vectors reserved or negative on failure
7592  **/
7593 static int i40e_init_msix(struct i40e_pf *pf)
7594 {
7595         struct i40e_hw *hw = &pf->hw;
7596         int vectors_left;
7597         int v_budget, i;
7598         int v_actual;
7599         int iwarp_requested = 0;
7600
7601         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7602                 return -ENODEV;
7603
7604         /* The number of vectors we'll request will be comprised of:
7605          *   - Add 1 for "other" cause for Admin Queue events, etc.
7606          *   - The number of LAN queue pairs
7607          *      - Queues being used for RSS.
7608          *              We don't need as many as max_rss_size vectors.
7609          *              use rss_size instead in the calculation since that
7610          *              is governed by number of cpus in the system.
7611          *      - assumes symmetric Tx/Rx pairing
7612          *   - The number of VMDq pairs
7613          *   - The CPU count within the NUMA node if iWARP is enabled
7614 #ifdef I40E_FCOE
7615          *   - The number of FCOE qps.
7616 #endif
7617          * Once we count this up, try the request.
7618          *
7619          * If we can't get what we want, we'll simplify to nearly nothing
7620          * and try again.  If that still fails, we punt.
7621          */
7622         vectors_left = hw->func_caps.num_msix_vectors;
7623         v_budget = 0;
7624
7625         /* reserve one vector for miscellaneous handler */
7626         if (vectors_left) {
7627                 v_budget++;
7628                 vectors_left--;
7629         }
7630
7631         /* reserve vectors for the main PF traffic queues */
7632         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7633         vectors_left -= pf->num_lan_msix;
7634         v_budget += pf->num_lan_msix;
7635
7636         /* reserve one vector for sideband flow director */
7637         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7638                 if (vectors_left) {
7639                         pf->num_fdsb_msix = 1;
7640                         v_budget++;
7641                         vectors_left--;
7642                 } else {
7643                         pf->num_fdsb_msix = 0;
7644                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7645                 }
7646         }
7647
7648 #ifdef I40E_FCOE
7649         /* can we reserve enough for FCoE? */
7650         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7651                 if (!vectors_left)
7652                         pf->num_fcoe_msix = 0;
7653                 else if (vectors_left >= pf->num_fcoe_qps)
7654                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7655                 else
7656                         pf->num_fcoe_msix = 1;
7657                 v_budget += pf->num_fcoe_msix;
7658                 vectors_left -= pf->num_fcoe_msix;
7659         }
7660
7661 #endif
7662         /* can we reserve enough for iWARP? */
7663         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7664                 if (!vectors_left)
7665                         pf->num_iwarp_msix = 0;
7666                 else if (vectors_left < pf->num_iwarp_msix)
7667                         pf->num_iwarp_msix = 1;
7668                 v_budget += pf->num_iwarp_msix;
7669                 vectors_left -= pf->num_iwarp_msix;
7670         }
7671
7672         /* any vectors left over go for VMDq support */
7673         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7674                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7675                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7676
7677                 /* if we're short on vectors for what's desired, we limit
7678                  * the queues per vmdq.  If this is still more than are
7679                  * available, the user will need to change the number of
7680                  * queues/vectors used by the PF later with the ethtool
7681                  * channels command
7682                  */
7683                 if (vmdq_vecs < vmdq_vecs_wanted)
7684                         pf->num_vmdq_qps = 1;
7685                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7686
7687                 v_budget += vmdq_vecs;
7688                 vectors_left -= vmdq_vecs;
7689         }
7690
7691         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7692                                    GFP_KERNEL);
7693         if (!pf->msix_entries)
7694                 return -ENOMEM;
7695
7696         for (i = 0; i < v_budget; i++)
7697                 pf->msix_entries[i].entry = i;
7698         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7699
7700         if (v_actual != v_budget) {
7701                 /* If we have limited resources, we will start with no vectors
7702                  * for the special features and then allocate vectors to some
7703                  * of these features based on the policy and at the end disable
7704                  * the features that did not get any vectors.
7705                  */
7706                 iwarp_requested = pf->num_iwarp_msix;
7707                 pf->num_iwarp_msix = 0;
7708 #ifdef I40E_FCOE
7709                 pf->num_fcoe_qps = 0;
7710                 pf->num_fcoe_msix = 0;
7711 #endif
7712                 pf->num_vmdq_msix = 0;
7713         }
7714
7715         if (v_actual < I40E_MIN_MSIX) {
7716                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7717                 kfree(pf->msix_entries);
7718                 pf->msix_entries = NULL;
7719                 return -ENODEV;
7720
7721         } else if (v_actual == I40E_MIN_MSIX) {
7722                 /* Adjust for minimal MSIX use */
7723                 pf->num_vmdq_vsis = 0;
7724                 pf->num_vmdq_qps = 0;
7725                 pf->num_lan_qps = 1;
7726                 pf->num_lan_msix = 1;
7727
7728         } else if (v_actual != v_budget) {
7729                 int vec;
7730
7731                 /* reserve the misc vector */
7732                 vec = v_actual - 1;
7733
7734                 /* Scale vector usage down */
7735                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7736                 pf->num_vmdq_vsis = 1;
7737                 pf->num_vmdq_qps = 1;
7738                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7739
7740                 /* partition out the remaining vectors */
7741                 switch (vec) {
7742                 case 2:
7743                         pf->num_lan_msix = 1;
7744                         break;
7745                 case 3:
7746                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7747                                 pf->num_lan_msix = 1;
7748                                 pf->num_iwarp_msix = 1;
7749                         } else {
7750                                 pf->num_lan_msix = 2;
7751                         }
7752 #ifdef I40E_FCOE
7753                         /* give one vector to FCoE */
7754                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7755                                 pf->num_lan_msix = 1;
7756                                 pf->num_fcoe_msix = 1;
7757                         }
7758 #endif
7759                         break;
7760                 default:
7761                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7762                                 pf->num_iwarp_msix = min_t(int, (vec / 3),
7763                                                  iwarp_requested);
7764                                 pf->num_vmdq_vsis = min_t(int, (vec / 3),
7765                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7766                         } else {
7767                                 pf->num_vmdq_vsis = min_t(int, (vec / 2),
7768                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7769                         }
7770                         pf->num_lan_msix = min_t(int,
7771                                (vec - (pf->num_iwarp_msix + pf->num_vmdq_vsis)),
7772                                                               pf->num_lan_msix);
7773 #ifdef I40E_FCOE
7774                         /* give one vector to FCoE */
7775                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7776                                 pf->num_fcoe_msix = 1;
7777                                 vec--;
7778                         }
7779 #endif
7780                         break;
7781                 }
7782         }
7783
7784         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7785             (pf->num_vmdq_msix == 0)) {
7786                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7787                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7788         }
7789
7790         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
7791             (pf->num_iwarp_msix == 0)) {
7792                 dev_info(&pf->pdev->dev, "IWARP disabled, not enough MSI-X vectors\n");
7793                 pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
7794         }
7795 #ifdef I40E_FCOE
7796
7797         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7798                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7799                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7800         }
7801 #endif
7802         return v_actual;
7803 }
7804
7805 /**
7806  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7807  * @vsi: the VSI being configured
7808  * @v_idx: index of the vector in the vsi struct
7809  * @cpu: cpu to be used on affinity_mask
7810  *
7811  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7812  **/
7813 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx, int cpu)
7814 {
7815         struct i40e_q_vector *q_vector;
7816
7817         /* allocate q_vector */
7818         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7819         if (!q_vector)
7820                 return -ENOMEM;
7821
7822         q_vector->vsi = vsi;
7823         q_vector->v_idx = v_idx;
7824         cpumask_set_cpu(cpu, &q_vector->affinity_mask);
7825
7826         if (vsi->netdev)
7827                 netif_napi_add(vsi->netdev, &q_vector->napi,
7828                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7829
7830         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7831         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7832
7833         /* tie q_vector and vsi together */
7834         vsi->q_vectors[v_idx] = q_vector;
7835
7836         return 0;
7837 }
7838
7839 /**
7840  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7841  * @vsi: the VSI being configured
7842  *
7843  * We allocate one q_vector per queue interrupt.  If allocation fails we
7844  * return -ENOMEM.
7845  **/
7846 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7847 {
7848         struct i40e_pf *pf = vsi->back;
7849         int err, v_idx, num_q_vectors, current_cpu;
7850
7851         /* if not MSIX, give the one vector only to the LAN VSI */
7852         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7853                 num_q_vectors = vsi->num_q_vectors;
7854         else if (vsi == pf->vsi[pf->lan_vsi])
7855                 num_q_vectors = 1;
7856         else
7857                 return -EINVAL;
7858
7859         current_cpu = cpumask_first(cpu_online_mask);
7860
7861         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7862                 err = i40e_vsi_alloc_q_vector(vsi, v_idx, current_cpu);
7863                 if (err)
7864                         goto err_out;
7865                 current_cpu = cpumask_next(current_cpu, cpu_online_mask);
7866                 if (unlikely(current_cpu >= nr_cpu_ids))
7867                         current_cpu = cpumask_first(cpu_online_mask);
7868         }
7869
7870         return 0;
7871
7872 err_out:
7873         while (v_idx--)
7874                 i40e_free_q_vector(vsi, v_idx);
7875
7876         return err;
7877 }
7878
7879 /**
7880  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7881  * @pf: board private structure to initialize
7882  **/
7883 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7884 {
7885         int vectors = 0;
7886         ssize_t size;
7887
7888         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7889                 vectors = i40e_init_msix(pf);
7890                 if (vectors < 0) {
7891                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7892                                        I40E_FLAG_IWARP_ENABLED  |
7893 #ifdef I40E_FCOE
7894                                        I40E_FLAG_FCOE_ENABLED   |
7895 #endif
7896                                        I40E_FLAG_RSS_ENABLED    |
7897                                        I40E_FLAG_DCB_CAPABLE    |
7898                                        I40E_FLAG_DCB_ENABLED    |
7899                                        I40E_FLAG_SRIOV_ENABLED  |
7900                                        I40E_FLAG_FD_SB_ENABLED  |
7901                                        I40E_FLAG_FD_ATR_ENABLED |
7902                                        I40E_FLAG_VMDQ_ENABLED);
7903
7904                         /* rework the queue expectations without MSIX */
7905                         i40e_determine_queue_usage(pf);
7906                 }
7907         }
7908
7909         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7910             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7911                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7912                 vectors = pci_enable_msi(pf->pdev);
7913                 if (vectors < 0) {
7914                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7915                                  vectors);
7916                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7917                 }
7918                 vectors = 1;  /* one MSI or Legacy vector */
7919         }
7920
7921         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7922                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7923
7924         /* set up vector assignment tracking */
7925         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7926         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7927         if (!pf->irq_pile) {
7928                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7929                 return -ENOMEM;
7930         }
7931         pf->irq_pile->num_entries = vectors;
7932         pf->irq_pile->search_hint = 0;
7933
7934         /* track first vector for misc interrupts, ignore return */
7935         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7936
7937         return 0;
7938 }
7939
7940 /**
7941  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7942  * @pf: board private structure
7943  *
7944  * This sets up the handler for MSIX 0, which is used to manage the
7945  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7946  * when in MSI or Legacy interrupt mode.
7947  **/
7948 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7949 {
7950         struct i40e_hw *hw = &pf->hw;
7951         int err = 0;
7952
7953         /* Only request the irq if this is the first time through, and
7954          * not when we're rebuilding after a Reset
7955          */
7956         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7957                 err = request_irq(pf->msix_entries[0].vector,
7958                                   i40e_intr, 0, pf->int_name, pf);
7959                 if (err) {
7960                         dev_info(&pf->pdev->dev,
7961                                  "request_irq for %s failed: %d\n",
7962                                  pf->int_name, err);
7963                         return -EFAULT;
7964                 }
7965         }
7966
7967         i40e_enable_misc_int_causes(pf);
7968
7969         /* associate no queues to the misc vector */
7970         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7971         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7972
7973         i40e_flush(hw);
7974
7975         i40e_irq_dynamic_enable_icr0(pf, true);
7976
7977         return err;
7978 }
7979
7980 /**
7981  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7982  * @vsi: vsi structure
7983  * @seed: RSS hash seed
7984  **/
7985 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
7986                               u8 *lut, u16 lut_size)
7987 {
7988         struct i40e_pf *pf = vsi->back;
7989         struct i40e_hw *hw = &pf->hw;
7990         int ret = 0;
7991
7992         if (seed) {
7993                 struct i40e_aqc_get_set_rss_key_data *seed_dw =
7994                         (struct i40e_aqc_get_set_rss_key_data *)seed;
7995                 ret = i40e_aq_set_rss_key(hw, vsi->id, seed_dw);
7996                 if (ret) {
7997                         dev_info(&pf->pdev->dev,
7998                                  "Cannot set RSS key, err %s aq_err %s\n",
7999                                  i40e_stat_str(hw, ret),
8000                                  i40e_aq_str(hw, hw->aq.asq_last_status));
8001                         return ret;
8002                 }
8003         }
8004         if (lut) {
8005                 bool pf_lut = vsi->type == I40E_VSI_MAIN ? true : false;
8006
8007                 ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
8008                 if (ret) {
8009                         dev_info(&pf->pdev->dev,
8010                                  "Cannot set RSS lut, err %s aq_err %s\n",
8011                                  i40e_stat_str(hw, ret),
8012                                  i40e_aq_str(hw, hw->aq.asq_last_status));
8013                         return ret;
8014                 }
8015         }
8016         return ret;
8017 }
8018
8019 /**
8020  * i40e_get_rss_aq - Get RSS keys and lut by using AQ commands
8021  * @vsi: Pointer to vsi structure
8022  * @seed: Buffter to store the hash keys
8023  * @lut: Buffer to store the lookup table entries
8024  * @lut_size: Size of buffer to store the lookup table entries
8025  *
8026  * Return 0 on success, negative on failure
8027  */
8028 static int i40e_get_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
8029                            u8 *lut, u16 lut_size)
8030 {
8031         struct i40e_pf *pf = vsi->back;
8032         struct i40e_hw *hw = &pf->hw;
8033         int ret = 0;
8034
8035         if (seed) {
8036                 ret = i40e_aq_get_rss_key(hw, vsi->id,
8037                         (struct i40e_aqc_get_set_rss_key_data *)seed);
8038                 if (ret) {
8039                         dev_info(&pf->pdev->dev,
8040                                  "Cannot get RSS key, err %s aq_err %s\n",
8041                                  i40e_stat_str(&pf->hw, ret),
8042                                  i40e_aq_str(&pf->hw,
8043                                              pf->hw.aq.asq_last_status));
8044                         return ret;
8045                 }
8046         }
8047
8048         if (lut) {
8049                 bool pf_lut = vsi->type == I40E_VSI_MAIN ? true : false;
8050
8051                 ret = i40e_aq_get_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
8052                 if (ret) {
8053                         dev_info(&pf->pdev->dev,
8054                                  "Cannot get RSS lut, err %s aq_err %s\n",
8055                                  i40e_stat_str(&pf->hw, ret),
8056                                  i40e_aq_str(&pf->hw,
8057                                              pf->hw.aq.asq_last_status));
8058                         return ret;
8059                 }
8060         }
8061
8062         return ret;
8063 }
8064
8065 /**
8066  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
8067  * @vsi: VSI structure
8068  **/
8069 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
8070 {
8071         u8 seed[I40E_HKEY_ARRAY_SIZE];
8072         struct i40e_pf *pf = vsi->back;
8073         u8 *lut;
8074         int ret;
8075
8076         if (!(pf->flags & I40E_FLAG_RSS_AQ_CAPABLE))
8077                 return 0;
8078
8079         if (!vsi->rss_size)
8080                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8081                                       vsi->num_queue_pairs);
8082         if (!vsi->rss_size)
8083                 return -EINVAL;
8084
8085         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8086         if (!lut)
8087                 return -ENOMEM;
8088         /* Use the user configured hash keys and lookup table if there is one,
8089          * otherwise use default
8090          */
8091         if (vsi->rss_lut_user)
8092                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8093         else
8094                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8095         if (vsi->rss_hkey_user)
8096                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8097         else
8098                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8099         ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
8100         kfree(lut);
8101
8102         return ret;
8103 }
8104
8105 /**
8106  * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
8107  * @vsi: Pointer to vsi structure
8108  * @seed: RSS hash seed
8109  * @lut: Lookup table
8110  * @lut_size: Lookup table size
8111  *
8112  * Returns 0 on success, negative on failure
8113  **/
8114 static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
8115                                const u8 *lut, u16 lut_size)
8116 {
8117         struct i40e_pf *pf = vsi->back;
8118         struct i40e_hw *hw = &pf->hw;
8119         u16 vf_id = vsi->vf_id;
8120         u8 i;
8121
8122         /* Fill out hash function seed */
8123         if (seed) {
8124                 u32 *seed_dw = (u32 *)seed;
8125
8126                 if (vsi->type == I40E_VSI_MAIN) {
8127                         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8128                                 i40e_write_rx_ctl(hw, I40E_PFQF_HKEY(i),
8129                                                   seed_dw[i]);
8130                 } else if (vsi->type == I40E_VSI_SRIOV) {
8131                         for (i = 0; i <= I40E_VFQF_HKEY1_MAX_INDEX; i++)
8132                                 i40e_write_rx_ctl(hw,
8133                                                   I40E_VFQF_HKEY1(i, vf_id),
8134                                                   seed_dw[i]);
8135                 } else {
8136                         dev_err(&pf->pdev->dev, "Cannot set RSS seed - invalid VSI type\n");
8137                 }
8138         }
8139
8140         if (lut) {
8141                 u32 *lut_dw = (u32 *)lut;
8142
8143                 if (vsi->type == I40E_VSI_MAIN) {
8144                         if (lut_size != I40E_HLUT_ARRAY_SIZE)
8145                                 return -EINVAL;
8146                         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8147                                 wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
8148                 } else if (vsi->type == I40E_VSI_SRIOV) {
8149                         if (lut_size != I40E_VF_HLUT_ARRAY_SIZE)
8150                                 return -EINVAL;
8151                         for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
8152                                 i40e_write_rx_ctl(hw,
8153                                                   I40E_VFQF_HLUT1(i, vf_id),
8154                                                   lut_dw[i]);
8155                 } else {
8156                         dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
8157                 }
8158         }
8159         i40e_flush(hw);
8160
8161         return 0;
8162 }
8163
8164 /**
8165  * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
8166  * @vsi: Pointer to VSI structure
8167  * @seed: Buffer to store the keys
8168  * @lut: Buffer to store the lookup table entries
8169  * @lut_size: Size of buffer to store the lookup table entries
8170  *
8171  * Returns 0 on success, negative on failure
8172  */
8173 static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
8174                             u8 *lut, u16 lut_size)
8175 {
8176         struct i40e_pf *pf = vsi->back;
8177         struct i40e_hw *hw = &pf->hw;
8178         u16 i;
8179
8180         if (seed) {
8181                 u32 *seed_dw = (u32 *)seed;
8182
8183                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8184                         seed_dw[i] = i40e_read_rx_ctl(hw, I40E_PFQF_HKEY(i));
8185         }
8186         if (lut) {
8187                 u32 *lut_dw = (u32 *)lut;
8188
8189                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
8190                         return -EINVAL;
8191                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8192                         lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
8193         }
8194
8195         return 0;
8196 }
8197
8198 /**
8199  * i40e_config_rss - Configure RSS keys and lut
8200  * @vsi: Pointer to VSI structure
8201  * @seed: RSS hash seed
8202  * @lut: Lookup table
8203  * @lut_size: Lookup table size
8204  *
8205  * Returns 0 on success, negative on failure
8206  */
8207 int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8208 {
8209         struct i40e_pf *pf = vsi->back;
8210
8211         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8212                 return i40e_config_rss_aq(vsi, seed, lut, lut_size);
8213         else
8214                 return i40e_config_rss_reg(vsi, seed, lut, lut_size);
8215 }
8216
8217 /**
8218  * i40e_get_rss - Get RSS keys and lut
8219  * @vsi: Pointer to VSI structure
8220  * @seed: Buffer to store the keys
8221  * @lut: Buffer to store the lookup table entries
8222  * lut_size: Size of buffer to store the lookup table entries
8223  *
8224  * Returns 0 on success, negative on failure
8225  */
8226 int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8227 {
8228         struct i40e_pf *pf = vsi->back;
8229
8230         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8231                 return i40e_get_rss_aq(vsi, seed, lut, lut_size);
8232         else
8233                 return i40e_get_rss_reg(vsi, seed, lut, lut_size);
8234 }
8235
8236 /**
8237  * i40e_fill_rss_lut - Fill the RSS lookup table with default values
8238  * @pf: Pointer to board private structure
8239  * @lut: Lookup table
8240  * @rss_table_size: Lookup table size
8241  * @rss_size: Range of queue number for hashing
8242  */
8243 void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
8244                        u16 rss_table_size, u16 rss_size)
8245 {
8246         u16 i;
8247
8248         for (i = 0; i < rss_table_size; i++)
8249                 lut[i] = i % rss_size;
8250 }
8251
8252 /**
8253  * i40e_pf_config_rss - Prepare for RSS if used
8254  * @pf: board private structure
8255  **/
8256 static int i40e_pf_config_rss(struct i40e_pf *pf)
8257 {
8258         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8259         u8 seed[I40E_HKEY_ARRAY_SIZE];
8260         u8 *lut;
8261         struct i40e_hw *hw = &pf->hw;
8262         u32 reg_val;
8263         u64 hena;
8264         int ret;
8265
8266         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
8267         hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
8268                 ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
8269         hena |= i40e_pf_get_default_rss_hena(pf);
8270
8271         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
8272         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
8273
8274         /* Determine the RSS table size based on the hardware capabilities */
8275         reg_val = i40e_read_rx_ctl(hw, I40E_PFQF_CTL_0);
8276         reg_val = (pf->rss_table_size == 512) ?
8277                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
8278                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
8279         i40e_write_rx_ctl(hw, I40E_PFQF_CTL_0, reg_val);
8280
8281         /* Determine the RSS size of the VSI */
8282         if (!vsi->rss_size)
8283                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8284                                       vsi->num_queue_pairs);
8285         if (!vsi->rss_size)
8286                 return -EINVAL;
8287
8288         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8289         if (!lut)
8290                 return -ENOMEM;
8291
8292         /* Use user configured lut if there is one, otherwise use default */
8293         if (vsi->rss_lut_user)
8294                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8295         else
8296                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8297
8298         /* Use user configured hash key if there is one, otherwise
8299          * use default.
8300          */
8301         if (vsi->rss_hkey_user)
8302                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8303         else
8304                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8305         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
8306         kfree(lut);
8307
8308         return ret;
8309 }
8310
8311 /**
8312  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
8313  * @pf: board private structure
8314  * @queue_count: the requested queue count for rss.
8315  *
8316  * returns 0 if rss is not enabled, if enabled returns the final rss queue
8317  * count which may be different from the requested queue count.
8318  **/
8319 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
8320 {
8321         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8322         int new_rss_size;
8323
8324         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
8325                 return 0;
8326
8327         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
8328
8329         if (queue_count != vsi->num_queue_pairs) {
8330                 vsi->req_queue_pairs = queue_count;
8331                 i40e_prep_for_reset(pf);
8332
8333                 pf->alloc_rss_size = new_rss_size;
8334
8335                 i40e_reset_and_rebuild(pf, true);
8336
8337                 /* Discard the user configured hash keys and lut, if less
8338                  * queues are enabled.
8339                  */
8340                 if (queue_count < vsi->rss_size) {
8341                         i40e_clear_rss_config_user(vsi);
8342                         dev_dbg(&pf->pdev->dev,
8343                                 "discard user configured hash keys and lut\n");
8344                 }
8345
8346                 /* Reset vsi->rss_size, as number of enabled queues changed */
8347                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8348                                       vsi->num_queue_pairs);
8349
8350                 i40e_pf_config_rss(pf);
8351         }
8352         dev_info(&pf->pdev->dev, "RSS count/HW max RSS count:  %d/%d\n",
8353                  pf->alloc_rss_size, pf->rss_size_max);
8354         return pf->alloc_rss_size;
8355 }
8356
8357 /**
8358  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
8359  * @pf: board private structure
8360  **/
8361 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
8362 {
8363         i40e_status status;
8364         bool min_valid, max_valid;
8365         u32 max_bw, min_bw;
8366
8367         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
8368                                            &min_valid, &max_valid);
8369
8370         if (!status) {
8371                 if (min_valid)
8372                         pf->npar_min_bw = min_bw;
8373                 if (max_valid)
8374                         pf->npar_max_bw = max_bw;
8375         }
8376
8377         return status;
8378 }
8379
8380 /**
8381  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
8382  * @pf: board private structure
8383  **/
8384 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
8385 {
8386         struct i40e_aqc_configure_partition_bw_data bw_data;
8387         i40e_status status;
8388
8389         /* Set the valid bit for this PF */
8390         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
8391         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
8392         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
8393
8394         /* Set the new bandwidths */
8395         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
8396
8397         return status;
8398 }
8399
8400 /**
8401  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
8402  * @pf: board private structure
8403  **/
8404 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
8405 {
8406         /* Commit temporary BW setting to permanent NVM image */
8407         enum i40e_admin_queue_err last_aq_status;
8408         i40e_status ret;
8409         u16 nvm_word;
8410
8411         if (pf->hw.partition_id != 1) {
8412                 dev_info(&pf->pdev->dev,
8413                          "Commit BW only works on partition 1! This is partition %d",
8414                          pf->hw.partition_id);
8415                 ret = I40E_NOT_SUPPORTED;
8416                 goto bw_commit_out;
8417         }
8418
8419         /* Acquire NVM for read access */
8420         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
8421         last_aq_status = pf->hw.aq.asq_last_status;
8422         if (ret) {
8423                 dev_info(&pf->pdev->dev,
8424                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
8425                          i40e_stat_str(&pf->hw, ret),
8426                          i40e_aq_str(&pf->hw, last_aq_status));
8427                 goto bw_commit_out;
8428         }
8429
8430         /* Read word 0x10 of NVM - SW compatibility word 1 */
8431         ret = i40e_aq_read_nvm(&pf->hw,
8432                                I40E_SR_NVM_CONTROL_WORD,
8433                                0x10, sizeof(nvm_word), &nvm_word,
8434                                false, NULL);
8435         /* Save off last admin queue command status before releasing
8436          * the NVM
8437          */
8438         last_aq_status = pf->hw.aq.asq_last_status;
8439         i40e_release_nvm(&pf->hw);
8440         if (ret) {
8441                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
8442                          i40e_stat_str(&pf->hw, ret),
8443                          i40e_aq_str(&pf->hw, last_aq_status));
8444                 goto bw_commit_out;
8445         }
8446
8447         /* Wait a bit for NVM release to complete */
8448         msleep(50);
8449
8450         /* Acquire NVM for write access */
8451         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
8452         last_aq_status = pf->hw.aq.asq_last_status;
8453         if (ret) {
8454                 dev_info(&pf->pdev->dev,
8455                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
8456                          i40e_stat_str(&pf->hw, ret),
8457                          i40e_aq_str(&pf->hw, last_aq_status));
8458                 goto bw_commit_out;
8459         }
8460         /* Write it back out unchanged to initiate update NVM,
8461          * which will force a write of the shadow (alt) RAM to
8462          * the NVM - thus storing the bandwidth values permanently.
8463          */
8464         ret = i40e_aq_update_nvm(&pf->hw,
8465                                  I40E_SR_NVM_CONTROL_WORD,
8466                                  0x10, sizeof(nvm_word),
8467                                  &nvm_word, true, NULL);
8468         /* Save off last admin queue command status before releasing
8469          * the NVM
8470          */
8471         last_aq_status = pf->hw.aq.asq_last_status;
8472         i40e_release_nvm(&pf->hw);
8473         if (ret)
8474                 dev_info(&pf->pdev->dev,
8475                          "BW settings NOT SAVED, err %s aq_err %s\n",
8476                          i40e_stat_str(&pf->hw, ret),
8477                          i40e_aq_str(&pf->hw, last_aq_status));
8478 bw_commit_out:
8479
8480         return ret;
8481 }
8482
8483 /**
8484  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
8485  * @pf: board private structure to initialize
8486  *
8487  * i40e_sw_init initializes the Adapter private data structure.
8488  * Fields are initialized based on PCI device information and
8489  * OS network device settings (MTU size).
8490  **/
8491 static int i40e_sw_init(struct i40e_pf *pf)
8492 {
8493         int err = 0;
8494         int size;
8495
8496         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
8497                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
8498         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
8499                 if (I40E_DEBUG_USER & debug)
8500                         pf->hw.debug_mask = debug;
8501                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
8502                                                 I40E_DEFAULT_MSG_ENABLE);
8503         }
8504
8505         /* Set default capability flags */
8506         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
8507                     I40E_FLAG_MSI_ENABLED     |
8508                     I40E_FLAG_MSIX_ENABLED;
8509
8510         /* Set default ITR */
8511         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
8512         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
8513
8514         /* Depending on PF configurations, it is possible that the RSS
8515          * maximum might end up larger than the available queues
8516          */
8517         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
8518         pf->alloc_rss_size = 1;
8519         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
8520         pf->rss_size_max = min_t(int, pf->rss_size_max,
8521                                  pf->hw.func_caps.num_tx_qp);
8522         if (pf->hw.func_caps.rss) {
8523                 pf->flags |= I40E_FLAG_RSS_ENABLED;
8524                 pf->alloc_rss_size = min_t(int, pf->rss_size_max,
8525                                            num_online_cpus());
8526         }
8527
8528         /* MFP mode enabled */
8529         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
8530                 pf->flags |= I40E_FLAG_MFP_ENABLED;
8531                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
8532                 if (i40e_get_npar_bw_setting(pf))
8533                         dev_warn(&pf->pdev->dev,
8534                                  "Could not get NPAR bw settings\n");
8535                 else
8536                         dev_info(&pf->pdev->dev,
8537                                  "Min BW = %8.8x, Max BW = %8.8x\n",
8538                                  pf->npar_min_bw, pf->npar_max_bw);
8539         }
8540
8541         /* FW/NVM is not yet fixed in this regard */
8542         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
8543             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
8544                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8545                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
8546                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
8547                     pf->hw.num_partitions > 1)
8548                         dev_info(&pf->pdev->dev,
8549                                  "Flow Director Sideband mode Disabled in MFP mode\n");
8550                 else
8551                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8552                 pf->fdir_pf_filter_count =
8553                                  pf->hw.func_caps.fd_filters_guaranteed;
8554                 pf->hw.fdir_shared_filter_count =
8555                                  pf->hw.func_caps.fd_filters_best_effort;
8556         }
8557
8558         if (i40e_is_mac_710(&pf->hw) &&
8559             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
8560             (pf->hw.aq.fw_maj_ver < 4))) {
8561                 pf->flags |= I40E_FLAG_RESTART_AUTONEG;
8562                 /* No DCB support  for FW < v4.33 */
8563                 pf->flags |= I40E_FLAG_NO_DCB_SUPPORT;
8564         }
8565
8566         /* Disable FW LLDP if FW < v4.3 */
8567         if (i40e_is_mac_710(&pf->hw) &&
8568             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
8569             (pf->hw.aq.fw_maj_ver < 4)))
8570                 pf->flags |= I40E_FLAG_STOP_FW_LLDP;
8571
8572         /* Use the FW Set LLDP MIB API if FW > v4.40 */
8573         if (i40e_is_mac_710(&pf->hw) &&
8574             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver >= 40)) ||
8575             (pf->hw.aq.fw_maj_ver >= 5)))
8576                 pf->flags |= I40E_FLAG_USE_SET_LLDP_MIB;
8577
8578         if (pf->hw.func_caps.vmdq) {
8579                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
8580                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
8581                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
8582         }
8583
8584         if (pf->hw.func_caps.iwarp) {
8585                 pf->flags |= I40E_FLAG_IWARP_ENABLED;
8586                 /* IWARP needs one extra vector for CQP just like MISC.*/
8587                 pf->num_iwarp_msix = (int)num_online_cpus() + 1;
8588         }
8589
8590 #ifdef I40E_FCOE
8591         i40e_init_pf_fcoe(pf);
8592
8593 #endif /* I40E_FCOE */
8594 #ifdef CONFIG_PCI_IOV
8595         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
8596                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
8597                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
8598                 pf->num_req_vfs = min_t(int,
8599                                         pf->hw.func_caps.num_vfs,
8600                                         I40E_MAX_VF_COUNT);
8601         }
8602 #endif /* CONFIG_PCI_IOV */
8603         if (pf->hw.mac.type == I40E_MAC_X722) {
8604                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
8605                              I40E_FLAG_128_QP_RSS_CAPABLE |
8606                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
8607                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
8608                              I40E_FLAG_WB_ON_ITR_CAPABLE |
8609                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE |
8610                              I40E_FLAG_NO_PCI_LINK_CHECK |
8611                              I40E_FLAG_USE_SET_LLDP_MIB |
8612                              I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
8613         } else if ((pf->hw.aq.api_maj_ver > 1) ||
8614                    ((pf->hw.aq.api_maj_ver == 1) &&
8615                     (pf->hw.aq.api_min_ver > 4))) {
8616                 /* Supported in FW API version higher than 1.4 */
8617                 pf->flags |= I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
8618                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8619         } else {
8620                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8621         }
8622
8623         pf->eeprom_version = 0xDEAD;
8624         pf->lan_veb = I40E_NO_VEB;
8625         pf->lan_vsi = I40E_NO_VSI;
8626
8627         /* By default FW has this off for performance reasons */
8628         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
8629
8630         /* set up queue assignment tracking */
8631         size = sizeof(struct i40e_lump_tracking)
8632                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8633         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8634         if (!pf->qp_pile) {
8635                 err = -ENOMEM;
8636                 goto sw_init_done;
8637         }
8638         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8639         pf->qp_pile->search_hint = 0;
8640
8641         pf->tx_timeout_recovery_level = 1;
8642
8643         mutex_init(&pf->switch_mutex);
8644
8645         /* If NPAR is enabled nudge the Tx scheduler */
8646         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8647                 i40e_set_npar_bw_setting(pf);
8648
8649 sw_init_done:
8650         return err;
8651 }
8652
8653 /**
8654  * i40e_set_ntuple - set the ntuple feature flag and take action
8655  * @pf: board private structure to initialize
8656  * @features: the feature set that the stack is suggesting
8657  *
8658  * returns a bool to indicate if reset needs to happen
8659  **/
8660 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8661 {
8662         bool need_reset = false;
8663
8664         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8665          * the state changed, we need to reset.
8666          */
8667         if (features & NETIF_F_NTUPLE) {
8668                 /* Enable filters and mark for reset */
8669                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8670                         need_reset = true;
8671                 /* enable FD_SB only if there is MSI-X vector */
8672                 if (pf->num_fdsb_msix > 0)
8673                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8674         } else {
8675                 /* turn off filters, mark for reset and clear SW filter list */
8676                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8677                         need_reset = true;
8678                         i40e_fdir_filter_exit(pf);
8679                 }
8680                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8681                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8682                 /* reset fd counters */
8683                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8684                 pf->fdir_pf_active_filters = 0;
8685                 /* if ATR was auto disabled it can be re-enabled. */
8686                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8687                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
8688                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8689                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
8690                                 dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8691                 }
8692         }
8693         return need_reset;
8694 }
8695
8696 /**
8697  * i40e_clear_rss_lut - clear the rx hash lookup table
8698  * @vsi: the VSI being configured
8699  **/
8700 static void i40e_clear_rss_lut(struct i40e_vsi *vsi)
8701 {
8702         struct i40e_pf *pf = vsi->back;
8703         struct i40e_hw *hw = &pf->hw;
8704         u16 vf_id = vsi->vf_id;
8705         u8 i;
8706
8707         if (vsi->type == I40E_VSI_MAIN) {
8708                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8709                         wr32(hw, I40E_PFQF_HLUT(i), 0);
8710         } else if (vsi->type == I40E_VSI_SRIOV) {
8711                 for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
8712                         i40e_write_rx_ctl(hw, I40E_VFQF_HLUT1(i, vf_id), 0);
8713         } else {
8714                 dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
8715         }
8716 }
8717
8718 /**
8719  * i40e_set_features - set the netdev feature flags
8720  * @netdev: ptr to the netdev being adjusted
8721  * @features: the feature set that the stack is suggesting
8722  **/
8723 static int i40e_set_features(struct net_device *netdev,
8724                              netdev_features_t features)
8725 {
8726         struct i40e_netdev_priv *np = netdev_priv(netdev);
8727         struct i40e_vsi *vsi = np->vsi;
8728         struct i40e_pf *pf = vsi->back;
8729         bool need_reset;
8730
8731         if (features & NETIF_F_RXHASH && !(netdev->features & NETIF_F_RXHASH))
8732                 i40e_pf_config_rss(pf);
8733         else if (!(features & NETIF_F_RXHASH) &&
8734                  netdev->features & NETIF_F_RXHASH)
8735                 i40e_clear_rss_lut(vsi);
8736
8737         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8738                 i40e_vlan_stripping_enable(vsi);
8739         else
8740                 i40e_vlan_stripping_disable(vsi);
8741
8742         need_reset = i40e_set_ntuple(pf, features);
8743
8744         if (need_reset)
8745                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8746
8747         return 0;
8748 }
8749
8750 /**
8751  * i40e_get_udp_port_idx - Lookup a possibly offloaded for Rx UDP port
8752  * @pf: board private structure
8753  * @port: The UDP port to look up
8754  *
8755  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8756  **/
8757 static u8 i40e_get_udp_port_idx(struct i40e_pf *pf, __be16 port)
8758 {
8759         u8 i;
8760
8761         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8762                 if (pf->udp_ports[i].index == port)
8763                         return i;
8764         }
8765
8766         return i;
8767 }
8768
8769 /**
8770  * i40e_udp_tunnel_add - Get notifications about UDP tunnel ports that come up
8771  * @netdev: This physical port's netdev
8772  * @ti: Tunnel endpoint information
8773  **/
8774 static void i40e_udp_tunnel_add(struct net_device *netdev,
8775                                 struct udp_tunnel_info *ti)
8776 {
8777         struct i40e_netdev_priv *np = netdev_priv(netdev);
8778         struct i40e_vsi *vsi = np->vsi;
8779         struct i40e_pf *pf = vsi->back;
8780         __be16 port = ti->port;
8781         u8 next_idx;
8782         u8 idx;
8783
8784         idx = i40e_get_udp_port_idx(pf, port);
8785
8786         /* Check if port already exists */
8787         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8788                 netdev_info(netdev, "port %d already offloaded\n",
8789                             ntohs(port));
8790                 return;
8791         }
8792
8793         /* Now check if there is space to add the new port */
8794         next_idx = i40e_get_udp_port_idx(pf, 0);
8795
8796         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8797                 netdev_info(netdev, "maximum number of offloaded UDP ports reached, not adding port %d\n",
8798                             ntohs(port));
8799                 return;
8800         }
8801
8802         switch (ti->type) {
8803         case UDP_TUNNEL_TYPE_VXLAN:
8804                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_VXLAN;
8805                 break;
8806         case UDP_TUNNEL_TYPE_GENEVE:
8807                 if (!(pf->flags & I40E_FLAG_GENEVE_OFFLOAD_CAPABLE))
8808                         return;
8809                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_NGE;
8810                 break;
8811         default:
8812                 return;
8813         }
8814
8815         /* New port: add it and mark its index in the bitmap */
8816         pf->udp_ports[next_idx].index = port;
8817         pf->pending_udp_bitmap |= BIT_ULL(next_idx);
8818         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8819 }
8820
8821 /**
8822  * i40e_udp_tunnel_del - Get notifications about UDP tunnel ports that go away
8823  * @netdev: This physical port's netdev
8824  * @ti: Tunnel endpoint information
8825  **/
8826 static void i40e_udp_tunnel_del(struct net_device *netdev,
8827                                 struct udp_tunnel_info *ti)
8828 {
8829         struct i40e_netdev_priv *np = netdev_priv(netdev);
8830         struct i40e_vsi *vsi = np->vsi;
8831         struct i40e_pf *pf = vsi->back;
8832         __be16 port = ti->port;
8833         u8 idx;
8834
8835         idx = i40e_get_udp_port_idx(pf, port);
8836
8837         /* Check if port already exists */
8838         if (idx >= I40E_MAX_PF_UDP_OFFLOAD_PORTS)
8839                 goto not_found;
8840
8841         switch (ti->type) {
8842         case UDP_TUNNEL_TYPE_VXLAN:
8843                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_VXLAN)
8844                         goto not_found;
8845                 break;
8846         case UDP_TUNNEL_TYPE_GENEVE:
8847                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_NGE)
8848                         goto not_found;
8849                 break;
8850         default:
8851                 goto not_found;
8852         }
8853
8854         /* if port exists, set it to 0 (mark for deletion)
8855          * and make it pending
8856          */
8857         pf->udp_ports[idx].index = 0;
8858         pf->pending_udp_bitmap |= BIT_ULL(idx);
8859         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8860
8861         return;
8862 not_found:
8863         netdev_warn(netdev, "UDP port %d was not found, not deleting\n",
8864                     ntohs(port));
8865 }
8866
8867 static int i40e_get_phys_port_id(struct net_device *netdev,
8868                                  struct netdev_phys_item_id *ppid)
8869 {
8870         struct i40e_netdev_priv *np = netdev_priv(netdev);
8871         struct i40e_pf *pf = np->vsi->back;
8872         struct i40e_hw *hw = &pf->hw;
8873
8874         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8875                 return -EOPNOTSUPP;
8876
8877         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8878         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8879
8880         return 0;
8881 }
8882
8883 /**
8884  * i40e_ndo_fdb_add - add an entry to the hardware database
8885  * @ndm: the input from the stack
8886  * @tb: pointer to array of nladdr (unused)
8887  * @dev: the net device pointer
8888  * @addr: the MAC address entry being added
8889  * @flags: instructions from stack about fdb operation
8890  */
8891 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8892                             struct net_device *dev,
8893                             const unsigned char *addr, u16 vid,
8894                             u16 flags)
8895 {
8896         struct i40e_netdev_priv *np = netdev_priv(dev);
8897         struct i40e_pf *pf = np->vsi->back;
8898         int err = 0;
8899
8900         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8901                 return -EOPNOTSUPP;
8902
8903         if (vid) {
8904                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8905                 return -EINVAL;
8906         }
8907
8908         /* Hardware does not support aging addresses so if a
8909          * ndm_state is given only allow permanent addresses
8910          */
8911         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8912                 netdev_info(dev, "FDB only supports static addresses\n");
8913                 return -EINVAL;
8914         }
8915
8916         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8917                 err = dev_uc_add_excl(dev, addr);
8918         else if (is_multicast_ether_addr(addr))
8919                 err = dev_mc_add_excl(dev, addr);
8920         else
8921                 err = -EINVAL;
8922
8923         /* Only return duplicate errors if NLM_F_EXCL is set */
8924         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8925                 err = 0;
8926
8927         return err;
8928 }
8929
8930 /**
8931  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8932  * @dev: the netdev being configured
8933  * @nlh: RTNL message
8934  *
8935  * Inserts a new hardware bridge if not already created and
8936  * enables the bridging mode requested (VEB or VEPA). If the
8937  * hardware bridge has already been inserted and the request
8938  * is to change the mode then that requires a PF reset to
8939  * allow rebuild of the components with required hardware
8940  * bridge mode enabled.
8941  **/
8942 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8943                                    struct nlmsghdr *nlh,
8944                                    u16 flags)
8945 {
8946         struct i40e_netdev_priv *np = netdev_priv(dev);
8947         struct i40e_vsi *vsi = np->vsi;
8948         struct i40e_pf *pf = vsi->back;
8949         struct i40e_veb *veb = NULL;
8950         struct nlattr *attr, *br_spec;
8951         int i, rem;
8952
8953         /* Only for PF VSI for now */
8954         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8955                 return -EOPNOTSUPP;
8956
8957         /* Find the HW bridge for PF VSI */
8958         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8959                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8960                         veb = pf->veb[i];
8961         }
8962
8963         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8964
8965         nla_for_each_nested(attr, br_spec, rem) {
8966                 __u16 mode;
8967
8968                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8969                         continue;
8970
8971                 mode = nla_get_u16(attr);
8972                 if ((mode != BRIDGE_MODE_VEPA) &&
8973                     (mode != BRIDGE_MODE_VEB))
8974                         return -EINVAL;
8975
8976                 /* Insert a new HW bridge */
8977                 if (!veb) {
8978                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8979                                              vsi->tc_config.enabled_tc);
8980                         if (veb) {
8981                                 veb->bridge_mode = mode;
8982                                 i40e_config_bridge_mode(veb);
8983                         } else {
8984                                 /* No Bridge HW offload available */
8985                                 return -ENOENT;
8986                         }
8987                         break;
8988                 } else if (mode != veb->bridge_mode) {
8989                         /* Existing HW bridge but different mode needs reset */
8990                         veb->bridge_mode = mode;
8991                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8992                         if (mode == BRIDGE_MODE_VEB)
8993                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8994                         else
8995                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8996                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8997                         break;
8998                 }
8999         }
9000
9001         return 0;
9002 }
9003
9004 /**
9005  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
9006  * @skb: skb buff
9007  * @pid: process id
9008  * @seq: RTNL message seq #
9009  * @dev: the netdev being configured
9010  * @filter_mask: unused
9011  * @nlflags: netlink flags passed in
9012  *
9013  * Return the mode in which the hardware bridge is operating in
9014  * i.e VEB or VEPA.
9015  **/
9016 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
9017                                    struct net_device *dev,
9018                                    u32 __always_unused filter_mask,
9019                                    int nlflags)
9020 {
9021         struct i40e_netdev_priv *np = netdev_priv(dev);
9022         struct i40e_vsi *vsi = np->vsi;
9023         struct i40e_pf *pf = vsi->back;
9024         struct i40e_veb *veb = NULL;
9025         int i;
9026
9027         /* Only for PF VSI for now */
9028         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
9029                 return -EOPNOTSUPP;
9030
9031         /* Find the HW bridge for the PF VSI */
9032         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9033                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9034                         veb = pf->veb[i];
9035         }
9036
9037         if (!veb)
9038                 return 0;
9039
9040         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
9041                                        nlflags, 0, 0, filter_mask, NULL);
9042 }
9043
9044 /* Hardware supports L4 tunnel length of 128B (=2^7) which includes
9045  * inner mac plus all inner ethertypes.
9046  */
9047 #define I40E_MAX_TUNNEL_HDR_LEN 128
9048 /**
9049  * i40e_features_check - Validate encapsulated packet conforms to limits
9050  * @skb: skb buff
9051  * @dev: This physical port's netdev
9052  * @features: Offload features that the stack believes apply
9053  **/
9054 static netdev_features_t i40e_features_check(struct sk_buff *skb,
9055                                              struct net_device *dev,
9056                                              netdev_features_t features)
9057 {
9058         if (skb->encapsulation &&
9059             ((skb_inner_network_header(skb) - skb_transport_header(skb)) >
9060              I40E_MAX_TUNNEL_HDR_LEN))
9061                 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
9062
9063         return features;
9064 }
9065
9066 static const struct net_device_ops i40e_netdev_ops = {
9067         .ndo_open               = i40e_open,
9068         .ndo_stop               = i40e_close,
9069         .ndo_start_xmit         = i40e_lan_xmit_frame,
9070         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
9071         .ndo_set_rx_mode        = i40e_set_rx_mode,
9072         .ndo_validate_addr      = eth_validate_addr,
9073         .ndo_set_mac_address    = i40e_set_mac,
9074         .ndo_change_mtu         = i40e_change_mtu,
9075         .ndo_do_ioctl           = i40e_ioctl,
9076         .ndo_tx_timeout         = i40e_tx_timeout,
9077         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
9078         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
9079 #ifdef CONFIG_NET_POLL_CONTROLLER
9080         .ndo_poll_controller    = i40e_netpoll,
9081 #endif
9082         .ndo_setup_tc           = __i40e_setup_tc,
9083 #ifdef I40E_FCOE
9084         .ndo_fcoe_enable        = i40e_fcoe_enable,
9085         .ndo_fcoe_disable       = i40e_fcoe_disable,
9086 #endif
9087         .ndo_set_features       = i40e_set_features,
9088         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
9089         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
9090         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
9091         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
9092         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
9093         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
9094         .ndo_set_vf_trust       = i40e_ndo_set_vf_trust,
9095         .ndo_udp_tunnel_add     = i40e_udp_tunnel_add,
9096         .ndo_udp_tunnel_del     = i40e_udp_tunnel_del,
9097         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
9098         .ndo_fdb_add            = i40e_ndo_fdb_add,
9099         .ndo_features_check     = i40e_features_check,
9100         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
9101         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
9102 };
9103
9104 /**
9105  * i40e_config_netdev - Setup the netdev flags
9106  * @vsi: the VSI being configured
9107  *
9108  * Returns 0 on success, negative value on failure
9109  **/
9110 static int i40e_config_netdev(struct i40e_vsi *vsi)
9111 {
9112         struct i40e_pf *pf = vsi->back;
9113         struct i40e_hw *hw = &pf->hw;
9114         struct i40e_netdev_priv *np;
9115         struct net_device *netdev;
9116         u8 mac_addr[ETH_ALEN];
9117         int etherdev_size;
9118
9119         etherdev_size = sizeof(struct i40e_netdev_priv);
9120         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
9121         if (!netdev)
9122                 return -ENOMEM;
9123
9124         vsi->netdev = netdev;
9125         np = netdev_priv(netdev);
9126         np->vsi = vsi;
9127
9128         netdev->hw_enc_features |= NETIF_F_SG                   |
9129                                    NETIF_F_IP_CSUM              |
9130                                    NETIF_F_IPV6_CSUM            |
9131                                    NETIF_F_HIGHDMA              |
9132                                    NETIF_F_SOFT_FEATURES        |
9133                                    NETIF_F_TSO                  |
9134                                    NETIF_F_TSO_ECN              |
9135                                    NETIF_F_TSO6                 |
9136                                    NETIF_F_GSO_GRE              |
9137                                    NETIF_F_GSO_GRE_CSUM         |
9138                                    NETIF_F_GSO_IPXIP4           |
9139                                    NETIF_F_GSO_IPXIP6           |
9140                                    NETIF_F_GSO_UDP_TUNNEL       |
9141                                    NETIF_F_GSO_UDP_TUNNEL_CSUM  |
9142                                    NETIF_F_GSO_PARTIAL          |
9143                                    NETIF_F_SCTP_CRC             |
9144                                    NETIF_F_RXHASH               |
9145                                    NETIF_F_RXCSUM               |
9146                                    0;
9147
9148         if (!(pf->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE))
9149                 netdev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
9150
9151         netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
9152
9153         /* record features VLANs can make use of */
9154         netdev->vlan_features |= netdev->hw_enc_features |
9155                                  NETIF_F_TSO_MANGLEID;
9156
9157         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
9158                 netdev->hw_features |= NETIF_F_NTUPLE;
9159
9160         netdev->hw_features |= netdev->hw_enc_features  |
9161                                NETIF_F_HW_VLAN_CTAG_TX  |
9162                                NETIF_F_HW_VLAN_CTAG_RX;
9163
9164         netdev->features |= netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
9165         netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
9166
9167         if (vsi->type == I40E_VSI_MAIN) {
9168                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
9169                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
9170                 /* The following steps are necessary to prevent reception
9171                  * of tagged packets - some older NVM configurations load a
9172                  * default a MAC-VLAN filter that accepts any tagged packet
9173                  * which must be replaced by a normal filter.
9174                  */
9175                 i40e_rm_default_mac_filter(vsi, mac_addr);
9176                 spin_lock_bh(&vsi->mac_filter_list_lock);
9177                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, true);
9178                 spin_unlock_bh(&vsi->mac_filter_list_lock);
9179         } else {
9180                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
9181                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
9182                          pf->vsi[pf->lan_vsi]->netdev->name);
9183                 random_ether_addr(mac_addr);
9184
9185                 spin_lock_bh(&vsi->mac_filter_list_lock);
9186                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
9187                 spin_unlock_bh(&vsi->mac_filter_list_lock);
9188         }
9189
9190         ether_addr_copy(netdev->dev_addr, mac_addr);
9191         ether_addr_copy(netdev->perm_addr, mac_addr);
9192
9193         netdev->priv_flags |= IFF_UNICAST_FLT;
9194         netdev->priv_flags |= IFF_SUPP_NOFCS;
9195         /* Setup netdev TC information */
9196         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
9197
9198         netdev->netdev_ops = &i40e_netdev_ops;
9199         netdev->watchdog_timeo = 5 * HZ;
9200         i40e_set_ethtool_ops(netdev);
9201 #ifdef I40E_FCOE
9202         i40e_fcoe_config_netdev(netdev, vsi);
9203 #endif
9204
9205         return 0;
9206 }
9207
9208 /**
9209  * i40e_vsi_delete - Delete a VSI from the switch
9210  * @vsi: the VSI being removed
9211  *
9212  * Returns 0 on success, negative value on failure
9213  **/
9214 static void i40e_vsi_delete(struct i40e_vsi *vsi)
9215 {
9216         /* remove default VSI is not allowed */
9217         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
9218                 return;
9219
9220         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
9221 }
9222
9223 /**
9224  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
9225  * @vsi: the VSI being queried
9226  *
9227  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
9228  **/
9229 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
9230 {
9231         struct i40e_veb *veb;
9232         struct i40e_pf *pf = vsi->back;
9233
9234         /* Uplink is not a bridge so default to VEB */
9235         if (vsi->veb_idx == I40E_NO_VEB)
9236                 return 1;
9237
9238         veb = pf->veb[vsi->veb_idx];
9239         if (!veb) {
9240                 dev_info(&pf->pdev->dev,
9241                          "There is no veb associated with the bridge\n");
9242                 return -ENOENT;
9243         }
9244
9245         /* Uplink is a bridge in VEPA mode */
9246         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
9247                 return 0;
9248         } else {
9249                 /* Uplink is a bridge in VEB mode */
9250                 return 1;
9251         }
9252
9253         /* VEPA is now default bridge, so return 0 */
9254         return 0;
9255 }
9256
9257 /**
9258  * i40e_add_vsi - Add a VSI to the switch
9259  * @vsi: the VSI being configured
9260  *
9261  * This initializes a VSI context depending on the VSI type to be added and
9262  * passes it down to the add_vsi aq command.
9263  **/
9264 static int i40e_add_vsi(struct i40e_vsi *vsi)
9265 {
9266         int ret = -ENODEV;
9267         i40e_status aq_ret = 0;
9268         struct i40e_pf *pf = vsi->back;
9269         struct i40e_hw *hw = &pf->hw;
9270         struct i40e_vsi_context ctxt;
9271         struct i40e_mac_filter *f, *ftmp;
9272
9273         u8 enabled_tc = 0x1; /* TC0 enabled */
9274         int f_count = 0;
9275
9276         memset(&ctxt, 0, sizeof(ctxt));
9277         switch (vsi->type) {
9278         case I40E_VSI_MAIN:
9279                 /* The PF's main VSI is already setup as part of the
9280                  * device initialization, so we'll not bother with
9281                  * the add_vsi call, but we will retrieve the current
9282                  * VSI context.
9283                  */
9284                 ctxt.seid = pf->main_vsi_seid;
9285                 ctxt.pf_num = pf->hw.pf_id;
9286                 ctxt.vf_num = 0;
9287                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
9288                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9289                 if (ret) {
9290                         dev_info(&pf->pdev->dev,
9291                                  "couldn't get PF vsi config, err %s aq_err %s\n",
9292                                  i40e_stat_str(&pf->hw, ret),
9293                                  i40e_aq_str(&pf->hw,
9294                                              pf->hw.aq.asq_last_status));
9295                         return -ENOENT;
9296                 }
9297                 vsi->info = ctxt.info;
9298                 vsi->info.valid_sections = 0;
9299
9300                 vsi->seid = ctxt.seid;
9301                 vsi->id = ctxt.vsi_number;
9302
9303                 enabled_tc = i40e_pf_get_tc_map(pf);
9304
9305                 /* MFP mode setup queue map and update VSI */
9306                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
9307                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
9308                         memset(&ctxt, 0, sizeof(ctxt));
9309                         ctxt.seid = pf->main_vsi_seid;
9310                         ctxt.pf_num = pf->hw.pf_id;
9311                         ctxt.vf_num = 0;
9312                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
9313                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
9314                         if (ret) {
9315                                 dev_info(&pf->pdev->dev,
9316                                          "update vsi failed, err %s aq_err %s\n",
9317                                          i40e_stat_str(&pf->hw, ret),
9318                                          i40e_aq_str(&pf->hw,
9319                                                     pf->hw.aq.asq_last_status));
9320                                 ret = -ENOENT;
9321                                 goto err;
9322                         }
9323                         /* update the local VSI info queue map */
9324                         i40e_vsi_update_queue_map(vsi, &ctxt);
9325                         vsi->info.valid_sections = 0;
9326                 } else {
9327                         /* Default/Main VSI is only enabled for TC0
9328                          * reconfigure it to enable all TCs that are
9329                          * available on the port in SFP mode.
9330                          * For MFP case the iSCSI PF would use this
9331                          * flow to enable LAN+iSCSI TC.
9332                          */
9333                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
9334                         if (ret) {
9335                                 dev_info(&pf->pdev->dev,
9336                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
9337                                          enabled_tc,
9338                                          i40e_stat_str(&pf->hw, ret),
9339                                          i40e_aq_str(&pf->hw,
9340                                                     pf->hw.aq.asq_last_status));
9341                                 ret = -ENOENT;
9342                         }
9343                 }
9344                 break;
9345
9346         case I40E_VSI_FDIR:
9347                 ctxt.pf_num = hw->pf_id;
9348                 ctxt.vf_num = 0;
9349                 ctxt.uplink_seid = vsi->uplink_seid;
9350                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9351                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9352                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
9353                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
9354                         ctxt.info.valid_sections |=
9355                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9356                         ctxt.info.switch_id =
9357                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9358                 }
9359                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9360                 break;
9361
9362         case I40E_VSI_VMDQ2:
9363                 ctxt.pf_num = hw->pf_id;
9364                 ctxt.vf_num = 0;
9365                 ctxt.uplink_seid = vsi->uplink_seid;
9366                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9367                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
9368
9369                 /* This VSI is connected to VEB so the switch_id
9370                  * should be set to zero by default.
9371                  */
9372                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9373                         ctxt.info.valid_sections |=
9374                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9375                         ctxt.info.switch_id =
9376                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9377                 }
9378
9379                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9380                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9381                 break;
9382
9383         case I40E_VSI_SRIOV:
9384                 ctxt.pf_num = hw->pf_id;
9385                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
9386                 ctxt.uplink_seid = vsi->uplink_seid;
9387                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9388                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
9389
9390                 /* This VSI is connected to VEB so the switch_id
9391                  * should be set to zero by default.
9392                  */
9393                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9394                         ctxt.info.valid_sections |=
9395                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9396                         ctxt.info.switch_id =
9397                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9398                 }
9399
9400                 if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
9401                         ctxt.info.valid_sections |=
9402                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
9403                         ctxt.info.queueing_opt_flags |=
9404                                 (I40E_AQ_VSI_QUE_OPT_TCP_ENA |
9405                                  I40E_AQ_VSI_QUE_OPT_RSS_LUT_VSI);
9406                 }
9407
9408                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
9409                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
9410                 if (pf->vf[vsi->vf_id].spoofchk) {
9411                         ctxt.info.valid_sections |=
9412                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
9413                         ctxt.info.sec_flags |=
9414                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
9415                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
9416                 }
9417                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9418                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9419                 break;
9420
9421 #ifdef I40E_FCOE
9422         case I40E_VSI_FCOE:
9423                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
9424                 if (ret) {
9425                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
9426                         return ret;
9427                 }
9428                 break;
9429
9430 #endif /* I40E_FCOE */
9431         case I40E_VSI_IWARP:
9432                 /* send down message to iWARP */
9433                 break;
9434
9435         default:
9436                 return -ENODEV;
9437         }
9438
9439         if (vsi->type != I40E_VSI_MAIN) {
9440                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
9441                 if (ret) {
9442                         dev_info(&vsi->back->pdev->dev,
9443                                  "add vsi failed, err %s aq_err %s\n",
9444                                  i40e_stat_str(&pf->hw, ret),
9445                                  i40e_aq_str(&pf->hw,
9446                                              pf->hw.aq.asq_last_status));
9447                         ret = -ENOENT;
9448                         goto err;
9449                 }
9450                 vsi->info = ctxt.info;
9451                 vsi->info.valid_sections = 0;
9452                 vsi->seid = ctxt.seid;
9453                 vsi->id = ctxt.vsi_number;
9454         }
9455         /* Except FDIR VSI, for all othet VSI set the broadcast filter */
9456         if (vsi->type != I40E_VSI_FDIR) {
9457                 aq_ret = i40e_aq_set_vsi_broadcast(hw, vsi->seid, true, NULL);
9458                 if (aq_ret) {
9459                         ret = i40e_aq_rc_to_posix(aq_ret,
9460                                                   hw->aq.asq_last_status);
9461                         dev_info(&pf->pdev->dev,
9462                                  "set brdcast promisc failed, err %s, aq_err %s\n",
9463                                  i40e_stat_str(hw, aq_ret),
9464                                  i40e_aq_str(hw, hw->aq.asq_last_status));
9465                 }
9466         }
9467
9468         vsi->active_filters = 0;
9469         clear_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
9470         spin_lock_bh(&vsi->mac_filter_list_lock);
9471         /* If macvlan filters already exist, force them to get loaded */
9472         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
9473                 f->state = I40E_FILTER_NEW;
9474                 f_count++;
9475         }
9476         spin_unlock_bh(&vsi->mac_filter_list_lock);
9477
9478         if (f_count) {
9479                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
9480                 pf->flags |= I40E_FLAG_FILTER_SYNC;
9481         }
9482
9483         /* Update VSI BW information */
9484         ret = i40e_vsi_get_bw_info(vsi);
9485         if (ret) {
9486                 dev_info(&pf->pdev->dev,
9487                          "couldn't get vsi bw info, err %s aq_err %s\n",
9488                          i40e_stat_str(&pf->hw, ret),
9489                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9490                 /* VSI is already added so not tearing that up */
9491                 ret = 0;
9492         }
9493
9494 err:
9495         return ret;
9496 }
9497
9498 /**
9499  * i40e_vsi_release - Delete a VSI and free its resources
9500  * @vsi: the VSI being removed
9501  *
9502  * Returns 0 on success or < 0 on error
9503  **/
9504 int i40e_vsi_release(struct i40e_vsi *vsi)
9505 {
9506         struct i40e_mac_filter *f, *ftmp;
9507         struct i40e_veb *veb = NULL;
9508         struct i40e_pf *pf;
9509         u16 uplink_seid;
9510         int i, n;
9511
9512         pf = vsi->back;
9513
9514         /* release of a VEB-owner or last VSI is not allowed */
9515         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
9516                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
9517                          vsi->seid, vsi->uplink_seid);
9518                 return -ENODEV;
9519         }
9520         if (vsi == pf->vsi[pf->lan_vsi] &&
9521             !test_bit(__I40E_DOWN, &pf->state)) {
9522                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
9523                 return -ENODEV;
9524         }
9525
9526         uplink_seid = vsi->uplink_seid;
9527         if (vsi->type != I40E_VSI_SRIOV) {
9528                 if (vsi->netdev_registered) {
9529                         vsi->netdev_registered = false;
9530                         if (vsi->netdev) {
9531                                 /* results in a call to i40e_close() */
9532                                 unregister_netdev(vsi->netdev);
9533                         }
9534                 } else {
9535                         i40e_vsi_close(vsi);
9536                 }
9537                 i40e_vsi_disable_irq(vsi);
9538         }
9539
9540         spin_lock_bh(&vsi->mac_filter_list_lock);
9541         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
9542                 i40e_del_filter(vsi, f->macaddr, f->vlan,
9543                                 f->is_vf, f->is_netdev);
9544         spin_unlock_bh(&vsi->mac_filter_list_lock);
9545
9546         i40e_sync_vsi_filters(vsi);
9547
9548         i40e_vsi_delete(vsi);
9549         i40e_vsi_free_q_vectors(vsi);
9550         if (vsi->netdev) {
9551                 free_netdev(vsi->netdev);
9552                 vsi->netdev = NULL;
9553         }
9554         i40e_vsi_clear_rings(vsi);
9555         i40e_vsi_clear(vsi);
9556
9557         /* If this was the last thing on the VEB, except for the
9558          * controlling VSI, remove the VEB, which puts the controlling
9559          * VSI onto the next level down in the switch.
9560          *
9561          * Well, okay, there's one more exception here: don't remove
9562          * the orphan VEBs yet.  We'll wait for an explicit remove request
9563          * from up the network stack.
9564          */
9565         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
9566                 if (pf->vsi[i] &&
9567                     pf->vsi[i]->uplink_seid == uplink_seid &&
9568                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9569                         n++;      /* count the VSIs */
9570                 }
9571         }
9572         for (i = 0; i < I40E_MAX_VEB; i++) {
9573                 if (!pf->veb[i])
9574                         continue;
9575                 if (pf->veb[i]->uplink_seid == uplink_seid)
9576                         n++;     /* count the VEBs */
9577                 if (pf->veb[i]->seid == uplink_seid)
9578                         veb = pf->veb[i];
9579         }
9580         if (n == 0 && veb && veb->uplink_seid != 0)
9581                 i40e_veb_release(veb);
9582
9583         return 0;
9584 }
9585
9586 /**
9587  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
9588  * @vsi: ptr to the VSI
9589  *
9590  * This should only be called after i40e_vsi_mem_alloc() which allocates the
9591  * corresponding SW VSI structure and initializes num_queue_pairs for the
9592  * newly allocated VSI.
9593  *
9594  * Returns 0 on success or negative on failure
9595  **/
9596 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
9597 {
9598         int ret = -ENOENT;
9599         struct i40e_pf *pf = vsi->back;
9600
9601         if (vsi->q_vectors[0]) {
9602                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
9603                          vsi->seid);
9604                 return -EEXIST;
9605         }
9606
9607         if (vsi->base_vector) {
9608                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
9609                          vsi->seid, vsi->base_vector);
9610                 return -EEXIST;
9611         }
9612
9613         ret = i40e_vsi_alloc_q_vectors(vsi);
9614         if (ret) {
9615                 dev_info(&pf->pdev->dev,
9616                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
9617                          vsi->num_q_vectors, vsi->seid, ret);
9618                 vsi->num_q_vectors = 0;
9619                 goto vector_setup_out;
9620         }
9621
9622         /* In Legacy mode, we do not have to get any other vector since we
9623          * piggyback on the misc/ICR0 for queue interrupts.
9624         */
9625         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
9626                 return ret;
9627         if (vsi->num_q_vectors)
9628                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
9629                                                  vsi->num_q_vectors, vsi->idx);
9630         if (vsi->base_vector < 0) {
9631                 dev_info(&pf->pdev->dev,
9632                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
9633                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
9634                 i40e_vsi_free_q_vectors(vsi);
9635                 ret = -ENOENT;
9636                 goto vector_setup_out;
9637         }
9638
9639 vector_setup_out:
9640         return ret;
9641 }
9642
9643 /**
9644  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
9645  * @vsi: pointer to the vsi.
9646  *
9647  * This re-allocates a vsi's queue resources.
9648  *
9649  * Returns pointer to the successfully allocated and configured VSI sw struct
9650  * on success, otherwise returns NULL on failure.
9651  **/
9652 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
9653 {
9654         struct i40e_pf *pf;
9655         u8 enabled_tc;
9656         int ret;
9657
9658         if (!vsi)
9659                 return NULL;
9660
9661         pf = vsi->back;
9662
9663         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
9664         i40e_vsi_clear_rings(vsi);
9665
9666         i40e_vsi_free_arrays(vsi, false);
9667         i40e_set_num_rings_in_vsi(vsi);
9668         ret = i40e_vsi_alloc_arrays(vsi, false);
9669         if (ret)
9670                 goto err_vsi;
9671
9672         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
9673         if (ret < 0) {
9674                 dev_info(&pf->pdev->dev,
9675                          "failed to get tracking for %d queues for VSI %d err %d\n",
9676                          vsi->alloc_queue_pairs, vsi->seid, ret);
9677                 goto err_vsi;
9678         }
9679         vsi->base_queue = ret;
9680
9681         /* Update the FW view of the VSI. Force a reset of TC and queue
9682          * layout configurations.
9683          */
9684         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9685         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9686         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9687         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9688         if (vsi->type == I40E_VSI_MAIN)
9689                 i40e_rm_default_mac_filter(vsi, pf->hw.mac.perm_addr);
9690
9691         /* assign it some queues */
9692         ret = i40e_alloc_rings(vsi);
9693         if (ret)
9694                 goto err_rings;
9695
9696         /* map all of the rings to the q_vectors */
9697         i40e_vsi_map_rings_to_vectors(vsi);
9698         return vsi;
9699
9700 err_rings:
9701         i40e_vsi_free_q_vectors(vsi);
9702         if (vsi->netdev_registered) {
9703                 vsi->netdev_registered = false;
9704                 unregister_netdev(vsi->netdev);
9705                 free_netdev(vsi->netdev);
9706                 vsi->netdev = NULL;
9707         }
9708         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9709 err_vsi:
9710         i40e_vsi_clear(vsi);
9711         return NULL;
9712 }
9713
9714 /**
9715  * i40e_vsi_setup - Set up a VSI by a given type
9716  * @pf: board private structure
9717  * @type: VSI type
9718  * @uplink_seid: the switch element to link to
9719  * @param1: usage depends upon VSI type. For VF types, indicates VF id
9720  *
9721  * This allocates the sw VSI structure and its queue resources, then add a VSI
9722  * to the identified VEB.
9723  *
9724  * Returns pointer to the successfully allocated and configure VSI sw struct on
9725  * success, otherwise returns NULL on failure.
9726  **/
9727 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9728                                 u16 uplink_seid, u32 param1)
9729 {
9730         struct i40e_vsi *vsi = NULL;
9731         struct i40e_veb *veb = NULL;
9732         int ret, i;
9733         int v_idx;
9734
9735         /* The requested uplink_seid must be either
9736          *     - the PF's port seid
9737          *              no VEB is needed because this is the PF
9738          *              or this is a Flow Director special case VSI
9739          *     - seid of an existing VEB
9740          *     - seid of a VSI that owns an existing VEB
9741          *     - seid of a VSI that doesn't own a VEB
9742          *              a new VEB is created and the VSI becomes the owner
9743          *     - seid of the PF VSI, which is what creates the first VEB
9744          *              this is a special case of the previous
9745          *
9746          * Find which uplink_seid we were given and create a new VEB if needed
9747          */
9748         for (i = 0; i < I40E_MAX_VEB; i++) {
9749                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9750                         veb = pf->veb[i];
9751                         break;
9752                 }
9753         }
9754
9755         if (!veb && uplink_seid != pf->mac_seid) {
9756
9757                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9758                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9759                                 vsi = pf->vsi[i];
9760                                 break;
9761                         }
9762                 }
9763                 if (!vsi) {
9764                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9765                                  uplink_seid);
9766                         return NULL;
9767                 }
9768
9769                 if (vsi->uplink_seid == pf->mac_seid)
9770                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9771                                              vsi->tc_config.enabled_tc);
9772                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9773                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9774                                              vsi->tc_config.enabled_tc);
9775                 if (veb) {
9776                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9777                                 dev_info(&vsi->back->pdev->dev,
9778                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9779                                 return NULL;
9780                         }
9781                         /* We come up by default in VEPA mode if SRIOV is not
9782                          * already enabled, in which case we can't force VEPA
9783                          * mode.
9784                          */
9785                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9786                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9787                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9788                         }
9789                         i40e_config_bridge_mode(veb);
9790                 }
9791                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9792                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9793                                 veb = pf->veb[i];
9794                 }
9795                 if (!veb) {
9796                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9797                         return NULL;
9798                 }
9799
9800                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9801                 uplink_seid = veb->seid;
9802         }
9803
9804         /* get vsi sw struct */
9805         v_idx = i40e_vsi_mem_alloc(pf, type);
9806         if (v_idx < 0)
9807                 goto err_alloc;
9808         vsi = pf->vsi[v_idx];
9809         if (!vsi)
9810                 goto err_alloc;
9811         vsi->type = type;
9812         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9813
9814         if (type == I40E_VSI_MAIN)
9815                 pf->lan_vsi = v_idx;
9816         else if (type == I40E_VSI_SRIOV)
9817                 vsi->vf_id = param1;
9818         /* assign it some queues */
9819         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9820                                 vsi->idx);
9821         if (ret < 0) {
9822                 dev_info(&pf->pdev->dev,
9823                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9824                          vsi->alloc_queue_pairs, vsi->seid, ret);
9825                 goto err_vsi;
9826         }
9827         vsi->base_queue = ret;
9828
9829         /* get a VSI from the hardware */
9830         vsi->uplink_seid = uplink_seid;
9831         ret = i40e_add_vsi(vsi);
9832         if (ret)
9833                 goto err_vsi;
9834
9835         switch (vsi->type) {
9836         /* setup the netdev if needed */
9837         case I40E_VSI_MAIN:
9838                 /* Apply relevant filters if a platform-specific mac
9839                  * address was selected.
9840                  */
9841                 if (!!(pf->flags & I40E_FLAG_PF_MAC)) {
9842                         ret = i40e_macaddr_init(vsi, pf->hw.mac.addr);
9843                         if (ret) {
9844                                 dev_warn(&pf->pdev->dev,
9845                                          "could not set up macaddr; err %d\n",
9846                                          ret);
9847                         }
9848                 }
9849         case I40E_VSI_VMDQ2:
9850         case I40E_VSI_FCOE:
9851                 ret = i40e_config_netdev(vsi);
9852                 if (ret)
9853                         goto err_netdev;
9854                 ret = register_netdev(vsi->netdev);
9855                 if (ret)
9856                         goto err_netdev;
9857                 vsi->netdev_registered = true;
9858                 netif_carrier_off(vsi->netdev);
9859 #ifdef CONFIG_I40E_DCB
9860                 /* Setup DCB netlink interface */
9861                 i40e_dcbnl_setup(vsi);
9862 #endif /* CONFIG_I40E_DCB */
9863                 /* fall through */
9864
9865         case I40E_VSI_FDIR:
9866                 /* set up vectors and rings if needed */
9867                 ret = i40e_vsi_setup_vectors(vsi);
9868                 if (ret)
9869                         goto err_msix;
9870
9871                 ret = i40e_alloc_rings(vsi);
9872                 if (ret)
9873                         goto err_rings;
9874
9875                 /* map all of the rings to the q_vectors */
9876                 i40e_vsi_map_rings_to_vectors(vsi);
9877
9878                 i40e_vsi_reset_stats(vsi);
9879                 break;
9880
9881         default:
9882                 /* no netdev or rings for the other VSI types */
9883                 break;
9884         }
9885
9886         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9887             (vsi->type == I40E_VSI_VMDQ2)) {
9888                 ret = i40e_vsi_config_rss(vsi);
9889         }
9890         return vsi;
9891
9892 err_rings:
9893         i40e_vsi_free_q_vectors(vsi);
9894 err_msix:
9895         if (vsi->netdev_registered) {
9896                 vsi->netdev_registered = false;
9897                 unregister_netdev(vsi->netdev);
9898                 free_netdev(vsi->netdev);
9899                 vsi->netdev = NULL;
9900         }
9901 err_netdev:
9902         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9903 err_vsi:
9904         i40e_vsi_clear(vsi);
9905 err_alloc:
9906         return NULL;
9907 }
9908
9909 /**
9910  * i40e_veb_get_bw_info - Query VEB BW information
9911  * @veb: the veb to query
9912  *
9913  * Query the Tx scheduler BW configuration data for given VEB
9914  **/
9915 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9916 {
9917         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9918         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9919         struct i40e_pf *pf = veb->pf;
9920         struct i40e_hw *hw = &pf->hw;
9921         u32 tc_bw_max;
9922         int ret = 0;
9923         int i;
9924
9925         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9926                                                   &bw_data, NULL);
9927         if (ret) {
9928                 dev_info(&pf->pdev->dev,
9929                          "query veb bw config failed, err %s aq_err %s\n",
9930                          i40e_stat_str(&pf->hw, ret),
9931                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9932                 goto out;
9933         }
9934
9935         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9936                                                    &ets_data, NULL);
9937         if (ret) {
9938                 dev_info(&pf->pdev->dev,
9939                          "query veb bw ets config failed, err %s aq_err %s\n",
9940                          i40e_stat_str(&pf->hw, ret),
9941                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9942                 goto out;
9943         }
9944
9945         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9946         veb->bw_max_quanta = ets_data.tc_bw_max;
9947         veb->is_abs_credits = bw_data.absolute_credits_enable;
9948         veb->enabled_tc = ets_data.tc_valid_bits;
9949         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9950                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9951         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9952                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9953                 veb->bw_tc_limit_credits[i] =
9954                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9955                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9956         }
9957
9958 out:
9959         return ret;
9960 }
9961
9962 /**
9963  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9964  * @pf: board private structure
9965  *
9966  * On error: returns error code (negative)
9967  * On success: returns vsi index in PF (positive)
9968  **/
9969 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9970 {
9971         int ret = -ENOENT;
9972         struct i40e_veb *veb;
9973         int i;
9974
9975         /* Need to protect the allocation of switch elements at the PF level */
9976         mutex_lock(&pf->switch_mutex);
9977
9978         /* VEB list may be fragmented if VEB creation/destruction has
9979          * been happening.  We can afford to do a quick scan to look
9980          * for any free slots in the list.
9981          *
9982          * find next empty veb slot, looping back around if necessary
9983          */
9984         i = 0;
9985         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9986                 i++;
9987         if (i >= I40E_MAX_VEB) {
9988                 ret = -ENOMEM;
9989                 goto err_alloc_veb;  /* out of VEB slots! */
9990         }
9991
9992         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9993         if (!veb) {
9994                 ret = -ENOMEM;
9995                 goto err_alloc_veb;
9996         }
9997         veb->pf = pf;
9998         veb->idx = i;
9999         veb->enabled_tc = 1;
10000
10001         pf->veb[i] = veb;
10002         ret = i;
10003 err_alloc_veb:
10004         mutex_unlock(&pf->switch_mutex);
10005         return ret;
10006 }
10007
10008 /**
10009  * i40e_switch_branch_release - Delete a branch of the switch tree
10010  * @branch: where to start deleting
10011  *
10012  * This uses recursion to find the tips of the branch to be
10013  * removed, deleting until we get back to and can delete this VEB.
10014  **/
10015 static void i40e_switch_branch_release(struct i40e_veb *branch)
10016 {
10017         struct i40e_pf *pf = branch->pf;
10018         u16 branch_seid = branch->seid;
10019         u16 veb_idx = branch->idx;
10020         int i;
10021
10022         /* release any VEBs on this VEB - RECURSION */
10023         for (i = 0; i < I40E_MAX_VEB; i++) {
10024                 if (!pf->veb[i])
10025                         continue;
10026                 if (pf->veb[i]->uplink_seid == branch->seid)
10027                         i40e_switch_branch_release(pf->veb[i]);
10028         }
10029
10030         /* Release the VSIs on this VEB, but not the owner VSI.
10031          *
10032          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
10033          *       the VEB itself, so don't use (*branch) after this loop.
10034          */
10035         for (i = 0; i < pf->num_alloc_vsi; i++) {
10036                 if (!pf->vsi[i])
10037                         continue;
10038                 if (pf->vsi[i]->uplink_seid == branch_seid &&
10039                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
10040                         i40e_vsi_release(pf->vsi[i]);
10041                 }
10042         }
10043
10044         /* There's one corner case where the VEB might not have been
10045          * removed, so double check it here and remove it if needed.
10046          * This case happens if the veb was created from the debugfs
10047          * commands and no VSIs were added to it.
10048          */
10049         if (pf->veb[veb_idx])
10050                 i40e_veb_release(pf->veb[veb_idx]);
10051 }
10052
10053 /**
10054  * i40e_veb_clear - remove veb struct
10055  * @veb: the veb to remove
10056  **/
10057 static void i40e_veb_clear(struct i40e_veb *veb)
10058 {
10059         if (!veb)
10060                 return;
10061
10062         if (veb->pf) {
10063                 struct i40e_pf *pf = veb->pf;
10064
10065                 mutex_lock(&pf->switch_mutex);
10066                 if (pf->veb[veb->idx] == veb)
10067                         pf->veb[veb->idx] = NULL;
10068                 mutex_unlock(&pf->switch_mutex);
10069         }
10070
10071         kfree(veb);
10072 }
10073
10074 /**
10075  * i40e_veb_release - Delete a VEB and free its resources
10076  * @veb: the VEB being removed
10077  **/
10078 void i40e_veb_release(struct i40e_veb *veb)
10079 {
10080         struct i40e_vsi *vsi = NULL;
10081         struct i40e_pf *pf;
10082         int i, n = 0;
10083
10084         pf = veb->pf;
10085
10086         /* find the remaining VSI and check for extras */
10087         for (i = 0; i < pf->num_alloc_vsi; i++) {
10088                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
10089                         n++;
10090                         vsi = pf->vsi[i];
10091                 }
10092         }
10093         if (n != 1) {
10094                 dev_info(&pf->pdev->dev,
10095                          "can't remove VEB %d with %d VSIs left\n",
10096                          veb->seid, n);
10097                 return;
10098         }
10099
10100         /* move the remaining VSI to uplink veb */
10101         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
10102         if (veb->uplink_seid) {
10103                 vsi->uplink_seid = veb->uplink_seid;
10104                 if (veb->uplink_seid == pf->mac_seid)
10105                         vsi->veb_idx = I40E_NO_VEB;
10106                 else
10107                         vsi->veb_idx = veb->veb_idx;
10108         } else {
10109                 /* floating VEB */
10110                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
10111                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
10112         }
10113
10114         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10115         i40e_veb_clear(veb);
10116 }
10117
10118 /**
10119  * i40e_add_veb - create the VEB in the switch
10120  * @veb: the VEB to be instantiated
10121  * @vsi: the controlling VSI
10122  **/
10123 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
10124 {
10125         struct i40e_pf *pf = veb->pf;
10126         bool enable_stats = !!(pf->flags & I40E_FLAG_VEB_STATS_ENABLED);
10127         int ret;
10128
10129         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
10130                               veb->enabled_tc, false,
10131                               &veb->seid, enable_stats, NULL);
10132
10133         /* get a VEB from the hardware */
10134         if (ret) {
10135                 dev_info(&pf->pdev->dev,
10136                          "couldn't add VEB, err %s aq_err %s\n",
10137                          i40e_stat_str(&pf->hw, ret),
10138                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10139                 return -EPERM;
10140         }
10141
10142         /* get statistics counter */
10143         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
10144                                          &veb->stats_idx, NULL, NULL, NULL);
10145         if (ret) {
10146                 dev_info(&pf->pdev->dev,
10147                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
10148                          i40e_stat_str(&pf->hw, ret),
10149                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10150                 return -EPERM;
10151         }
10152         ret = i40e_veb_get_bw_info(veb);
10153         if (ret) {
10154                 dev_info(&pf->pdev->dev,
10155                          "couldn't get VEB bw info, err %s aq_err %s\n",
10156                          i40e_stat_str(&pf->hw, ret),
10157                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10158                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10159                 return -ENOENT;
10160         }
10161
10162         vsi->uplink_seid = veb->seid;
10163         vsi->veb_idx = veb->idx;
10164         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
10165
10166         return 0;
10167 }
10168
10169 /**
10170  * i40e_veb_setup - Set up a VEB
10171  * @pf: board private structure
10172  * @flags: VEB setup flags
10173  * @uplink_seid: the switch element to link to
10174  * @vsi_seid: the initial VSI seid
10175  * @enabled_tc: Enabled TC bit-map
10176  *
10177  * This allocates the sw VEB structure and links it into the switch
10178  * It is possible and legal for this to be a duplicate of an already
10179  * existing VEB.  It is also possible for both uplink and vsi seids
10180  * to be zero, in order to create a floating VEB.
10181  *
10182  * Returns pointer to the successfully allocated VEB sw struct on
10183  * success, otherwise returns NULL on failure.
10184  **/
10185 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
10186                                 u16 uplink_seid, u16 vsi_seid,
10187                                 u8 enabled_tc)
10188 {
10189         struct i40e_veb *veb, *uplink_veb = NULL;
10190         int vsi_idx, veb_idx;
10191         int ret;
10192
10193         /* if one seid is 0, the other must be 0 to create a floating relay */
10194         if ((uplink_seid == 0 || vsi_seid == 0) &&
10195             (uplink_seid + vsi_seid != 0)) {
10196                 dev_info(&pf->pdev->dev,
10197                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
10198                          uplink_seid, vsi_seid);
10199                 return NULL;
10200         }
10201
10202         /* make sure there is such a vsi and uplink */
10203         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
10204                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
10205                         break;
10206         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
10207                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
10208                          vsi_seid);
10209                 return NULL;
10210         }
10211
10212         if (uplink_seid && uplink_seid != pf->mac_seid) {
10213                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
10214                         if (pf->veb[veb_idx] &&
10215                             pf->veb[veb_idx]->seid == uplink_seid) {
10216                                 uplink_veb = pf->veb[veb_idx];
10217                                 break;
10218                         }
10219                 }
10220                 if (!uplink_veb) {
10221                         dev_info(&pf->pdev->dev,
10222                                  "uplink seid %d not found\n", uplink_seid);
10223                         return NULL;
10224                 }
10225         }
10226
10227         /* get veb sw struct */
10228         veb_idx = i40e_veb_mem_alloc(pf);
10229         if (veb_idx < 0)
10230                 goto err_alloc;
10231         veb = pf->veb[veb_idx];
10232         veb->flags = flags;
10233         veb->uplink_seid = uplink_seid;
10234         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
10235         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
10236
10237         /* create the VEB in the switch */
10238         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
10239         if (ret)
10240                 goto err_veb;
10241         if (vsi_idx == pf->lan_vsi)
10242                 pf->lan_veb = veb->idx;
10243
10244         return veb;
10245
10246 err_veb:
10247         i40e_veb_clear(veb);
10248 err_alloc:
10249         return NULL;
10250 }
10251
10252 /**
10253  * i40e_setup_pf_switch_element - set PF vars based on switch type
10254  * @pf: board private structure
10255  * @ele: element we are building info from
10256  * @num_reported: total number of elements
10257  * @printconfig: should we print the contents
10258  *
10259  * helper function to assist in extracting a few useful SEID values.
10260  **/
10261 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
10262                                 struct i40e_aqc_switch_config_element_resp *ele,
10263                                 u16 num_reported, bool printconfig)
10264 {
10265         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
10266         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
10267         u8 element_type = ele->element_type;
10268         u16 seid = le16_to_cpu(ele->seid);
10269
10270         if (printconfig)
10271                 dev_info(&pf->pdev->dev,
10272                          "type=%d seid=%d uplink=%d downlink=%d\n",
10273                          element_type, seid, uplink_seid, downlink_seid);
10274
10275         switch (element_type) {
10276         case I40E_SWITCH_ELEMENT_TYPE_MAC:
10277                 pf->mac_seid = seid;
10278                 break;
10279         case I40E_SWITCH_ELEMENT_TYPE_VEB:
10280                 /* Main VEB? */
10281                 if (uplink_seid != pf->mac_seid)
10282                         break;
10283                 if (pf->lan_veb == I40E_NO_VEB) {
10284                         int v;
10285
10286                         /* find existing or else empty VEB */
10287                         for (v = 0; v < I40E_MAX_VEB; v++) {
10288                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
10289                                         pf->lan_veb = v;
10290                                         break;
10291                                 }
10292                         }
10293                         if (pf->lan_veb == I40E_NO_VEB) {
10294                                 v = i40e_veb_mem_alloc(pf);
10295                                 if (v < 0)
10296                                         break;
10297                                 pf->lan_veb = v;
10298                         }
10299                 }
10300
10301                 pf->veb[pf->lan_veb]->seid = seid;
10302                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
10303                 pf->veb[pf->lan_veb]->pf = pf;
10304                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
10305                 break;
10306         case I40E_SWITCH_ELEMENT_TYPE_VSI:
10307                 if (num_reported != 1)
10308                         break;
10309                 /* This is immediately after a reset so we can assume this is
10310                  * the PF's VSI
10311                  */
10312                 pf->mac_seid = uplink_seid;
10313                 pf->pf_seid = downlink_seid;
10314                 pf->main_vsi_seid = seid;
10315                 if (printconfig)
10316                         dev_info(&pf->pdev->dev,
10317                                  "pf_seid=%d main_vsi_seid=%d\n",
10318                                  pf->pf_seid, pf->main_vsi_seid);
10319                 break;
10320         case I40E_SWITCH_ELEMENT_TYPE_PF:
10321         case I40E_SWITCH_ELEMENT_TYPE_VF:
10322         case I40E_SWITCH_ELEMENT_TYPE_EMP:
10323         case I40E_SWITCH_ELEMENT_TYPE_BMC:
10324         case I40E_SWITCH_ELEMENT_TYPE_PE:
10325         case I40E_SWITCH_ELEMENT_TYPE_PA:
10326                 /* ignore these for now */
10327                 break;
10328         default:
10329                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
10330                          element_type, seid);
10331                 break;
10332         }
10333 }
10334
10335 /**
10336  * i40e_fetch_switch_configuration - Get switch config from firmware
10337  * @pf: board private structure
10338  * @printconfig: should we print the contents
10339  *
10340  * Get the current switch configuration from the device and
10341  * extract a few useful SEID values.
10342  **/
10343 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
10344 {
10345         struct i40e_aqc_get_switch_config_resp *sw_config;
10346         u16 next_seid = 0;
10347         int ret = 0;
10348         u8 *aq_buf;
10349         int i;
10350
10351         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
10352         if (!aq_buf)
10353                 return -ENOMEM;
10354
10355         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
10356         do {
10357                 u16 num_reported, num_total;
10358
10359                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
10360                                                 I40E_AQ_LARGE_BUF,
10361                                                 &next_seid, NULL);
10362                 if (ret) {
10363                         dev_info(&pf->pdev->dev,
10364                                  "get switch config failed err %s aq_err %s\n",
10365                                  i40e_stat_str(&pf->hw, ret),
10366                                  i40e_aq_str(&pf->hw,
10367                                              pf->hw.aq.asq_last_status));
10368                         kfree(aq_buf);
10369                         return -ENOENT;
10370                 }
10371
10372                 num_reported = le16_to_cpu(sw_config->header.num_reported);
10373                 num_total = le16_to_cpu(sw_config->header.num_total);
10374
10375                 if (printconfig)
10376                         dev_info(&pf->pdev->dev,
10377                                  "header: %d reported %d total\n",
10378                                  num_reported, num_total);
10379
10380                 for (i = 0; i < num_reported; i++) {
10381                         struct i40e_aqc_switch_config_element_resp *ele =
10382                                 &sw_config->element[i];
10383
10384                         i40e_setup_pf_switch_element(pf, ele, num_reported,
10385                                                      printconfig);
10386                 }
10387         } while (next_seid != 0);
10388
10389         kfree(aq_buf);
10390         return ret;
10391 }
10392
10393 /**
10394  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
10395  * @pf: board private structure
10396  * @reinit: if the Main VSI needs to re-initialized.
10397  *
10398  * Returns 0 on success, negative value on failure
10399  **/
10400 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
10401 {
10402         u16 flags = 0;
10403         int ret;
10404
10405         /* find out what's out there already */
10406         ret = i40e_fetch_switch_configuration(pf, false);
10407         if (ret) {
10408                 dev_info(&pf->pdev->dev,
10409                          "couldn't fetch switch config, err %s aq_err %s\n",
10410                          i40e_stat_str(&pf->hw, ret),
10411                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10412                 return ret;
10413         }
10414         i40e_pf_reset_stats(pf);
10415
10416         /* set the switch config bit for the whole device to
10417          * support limited promisc or true promisc
10418          * when user requests promisc. The default is limited
10419          * promisc.
10420         */
10421
10422         if ((pf->hw.pf_id == 0) &&
10423             !(pf->flags & I40E_FLAG_TRUE_PROMISC_SUPPORT))
10424                 flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
10425
10426         if (pf->hw.pf_id == 0) {
10427                 u16 valid_flags;
10428
10429                 valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
10430                 ret = i40e_aq_set_switch_config(&pf->hw, flags, valid_flags,
10431                                                 NULL);
10432                 if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) {
10433                         dev_info(&pf->pdev->dev,
10434                                  "couldn't set switch config bits, err %s aq_err %s\n",
10435                                  i40e_stat_str(&pf->hw, ret),
10436                                  i40e_aq_str(&pf->hw,
10437                                              pf->hw.aq.asq_last_status));
10438                         /* not a fatal problem, just keep going */
10439                 }
10440         }
10441
10442         /* first time setup */
10443         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
10444                 struct i40e_vsi *vsi = NULL;
10445                 u16 uplink_seid;
10446
10447                 /* Set up the PF VSI associated with the PF's main VSI
10448                  * that is already in the HW switch
10449                  */
10450                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
10451                         uplink_seid = pf->veb[pf->lan_veb]->seid;
10452                 else
10453                         uplink_seid = pf->mac_seid;
10454                 if (pf->lan_vsi == I40E_NO_VSI)
10455                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
10456                 else if (reinit)
10457                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
10458                 if (!vsi) {
10459                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
10460                         i40e_fdir_teardown(pf);
10461                         return -EAGAIN;
10462                 }
10463         } else {
10464                 /* force a reset of TC and queue layout configurations */
10465                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
10466
10467                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
10468                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
10469                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
10470         }
10471         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
10472
10473         i40e_fdir_sb_setup(pf);
10474
10475         /* Setup static PF queue filter control settings */
10476         ret = i40e_setup_pf_filter_control(pf);
10477         if (ret) {
10478                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
10479                          ret);
10480                 /* Failure here should not stop continuing other steps */
10481         }
10482
10483         /* enable RSS in the HW, even for only one queue, as the stack can use
10484          * the hash
10485          */
10486         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
10487                 i40e_pf_config_rss(pf);
10488
10489         /* fill in link information and enable LSE reporting */
10490         i40e_update_link_info(&pf->hw);
10491         i40e_link_event(pf);
10492
10493         /* Initialize user-specific link properties */
10494         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
10495                                   I40E_AQ_AN_COMPLETED) ? true : false);
10496
10497         i40e_ptp_init(pf);
10498
10499         return ret;
10500 }
10501
10502 /**
10503  * i40e_determine_queue_usage - Work out queue distribution
10504  * @pf: board private structure
10505  **/
10506 static void i40e_determine_queue_usage(struct i40e_pf *pf)
10507 {
10508         int queues_left;
10509
10510         pf->num_lan_qps = 0;
10511 #ifdef I40E_FCOE
10512         pf->num_fcoe_qps = 0;
10513 #endif
10514
10515         /* Find the max queues to be put into basic use.  We'll always be
10516          * using TC0, whether or not DCB is running, and TC0 will get the
10517          * big RSS set.
10518          */
10519         queues_left = pf->hw.func_caps.num_tx_qp;
10520
10521         if ((queues_left == 1) ||
10522             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
10523                 /* one qp for PF, no queues for anything else */
10524                 queues_left = 0;
10525                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10526
10527                 /* make sure all the fancies are disabled */
10528                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10529                                I40E_FLAG_IWARP_ENABLED  |
10530 #ifdef I40E_FCOE
10531                                I40E_FLAG_FCOE_ENABLED   |
10532 #endif
10533                                I40E_FLAG_FD_SB_ENABLED  |
10534                                I40E_FLAG_FD_ATR_ENABLED |
10535                                I40E_FLAG_DCB_CAPABLE    |
10536                                I40E_FLAG_DCB_ENABLED    |
10537                                I40E_FLAG_SRIOV_ENABLED  |
10538                                I40E_FLAG_VMDQ_ENABLED);
10539         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
10540                                   I40E_FLAG_FD_SB_ENABLED |
10541                                   I40E_FLAG_FD_ATR_ENABLED |
10542                                   I40E_FLAG_DCB_CAPABLE))) {
10543                 /* one qp for PF */
10544                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10545                 queues_left -= pf->num_lan_qps;
10546
10547                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10548                                I40E_FLAG_IWARP_ENABLED  |
10549 #ifdef I40E_FCOE
10550                                I40E_FLAG_FCOE_ENABLED   |
10551 #endif
10552                                I40E_FLAG_FD_SB_ENABLED  |
10553                                I40E_FLAG_FD_ATR_ENABLED |
10554                                I40E_FLAG_DCB_ENABLED    |
10555                                I40E_FLAG_VMDQ_ENABLED);
10556         } else {
10557                 /* Not enough queues for all TCs */
10558                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
10559                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
10560                         pf->flags &= ~(I40E_FLAG_DCB_CAPABLE |
10561                                         I40E_FLAG_DCB_ENABLED);
10562                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
10563                 }
10564                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
10565                                         num_online_cpus());
10566                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
10567                                         pf->hw.func_caps.num_tx_qp);
10568
10569                 queues_left -= pf->num_lan_qps;
10570         }
10571
10572 #ifdef I40E_FCOE
10573         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
10574                 if (I40E_DEFAULT_FCOE <= queues_left) {
10575                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
10576                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
10577                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
10578                 } else {
10579                         pf->num_fcoe_qps = 0;
10580                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
10581                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
10582                 }
10583
10584                 queues_left -= pf->num_fcoe_qps;
10585         }
10586
10587 #endif
10588         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10589                 if (queues_left > 1) {
10590                         queues_left -= 1; /* save 1 queue for FD */
10591                 } else {
10592                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
10593                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
10594                 }
10595         }
10596
10597         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10598             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
10599                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
10600                                         (queues_left / pf->num_vf_qps));
10601                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
10602         }
10603
10604         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
10605             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
10606                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
10607                                           (queues_left / pf->num_vmdq_qps));
10608                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
10609         }
10610
10611         pf->queues_left = queues_left;
10612         dev_dbg(&pf->pdev->dev,
10613                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
10614                 pf->hw.func_caps.num_tx_qp,
10615                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
10616                 pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
10617                 pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
10618                 queues_left);
10619 #ifdef I40E_FCOE
10620         dev_dbg(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
10621 #endif
10622 }
10623
10624 /**
10625  * i40e_setup_pf_filter_control - Setup PF static filter control
10626  * @pf: PF to be setup
10627  *
10628  * i40e_setup_pf_filter_control sets up a PF's initial filter control
10629  * settings. If PE/FCoE are enabled then it will also set the per PF
10630  * based filter sizes required for them. It also enables Flow director,
10631  * ethertype and macvlan type filter settings for the pf.
10632  *
10633  * Returns 0 on success, negative on failure
10634  **/
10635 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
10636 {
10637         struct i40e_filter_control_settings *settings = &pf->filter_settings;
10638
10639         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
10640
10641         /* Flow Director is enabled */
10642         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
10643                 settings->enable_fdir = true;
10644
10645         /* Ethtype and MACVLAN filters enabled for PF */
10646         settings->enable_ethtype = true;
10647         settings->enable_macvlan = true;
10648
10649         if (i40e_set_filter_control(&pf->hw, settings))
10650                 return -ENOENT;
10651
10652         return 0;
10653 }
10654
10655 #define INFO_STRING_LEN 255
10656 #define REMAIN(__x) (INFO_STRING_LEN - (__x))
10657 static void i40e_print_features(struct i40e_pf *pf)
10658 {
10659         struct i40e_hw *hw = &pf->hw;
10660         char *buf;
10661         int i;
10662
10663         buf = kmalloc(INFO_STRING_LEN, GFP_KERNEL);
10664         if (!buf)
10665                 return;
10666
10667         i = snprintf(buf, INFO_STRING_LEN, "Features: PF-id[%d]", hw->pf_id);
10668 #ifdef CONFIG_PCI_IOV
10669         i += snprintf(&buf[i], REMAIN(i), " VFs: %d", pf->num_req_vfs);
10670 #endif
10671         i += snprintf(&buf[i], REMAIN(i), " VSIs: %d QP: %d",
10672                       pf->hw.func_caps.num_vsis,
10673                       pf->vsi[pf->lan_vsi]->num_queue_pairs);
10674         if (pf->flags & I40E_FLAG_RSS_ENABLED)
10675                 i += snprintf(&buf[i], REMAIN(i), " RSS");
10676         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
10677                 i += snprintf(&buf[i], REMAIN(i), " FD_ATR");
10678         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10679                 i += snprintf(&buf[i], REMAIN(i), " FD_SB");
10680                 i += snprintf(&buf[i], REMAIN(i), " NTUPLE");
10681         }
10682         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
10683                 i += snprintf(&buf[i], REMAIN(i), " DCB");
10684         i += snprintf(&buf[i], REMAIN(i), " VxLAN");
10685         i += snprintf(&buf[i], REMAIN(i), " Geneve");
10686         if (pf->flags & I40E_FLAG_PTP)
10687                 i += snprintf(&buf[i], REMAIN(i), " PTP");
10688 #ifdef I40E_FCOE
10689         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
10690                 i += snprintf(&buf[i], REMAIN(i), " FCOE");
10691 #endif
10692         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
10693                 i += snprintf(&buf[i], REMAIN(i), " VEB");
10694         else
10695                 i += snprintf(&buf[i], REMAIN(i), " VEPA");
10696
10697         dev_info(&pf->pdev->dev, "%s\n", buf);
10698         kfree(buf);
10699         WARN_ON(i > INFO_STRING_LEN);
10700 }
10701
10702 /**
10703  * i40e_get_platform_mac_addr - get platform-specific MAC address
10704  *
10705  * @pdev: PCI device information struct
10706  * @pf: board private structure
10707  *
10708  * Look up the MAC address in Open Firmware  on systems that support it,
10709  * and use IDPROM on SPARC if no OF address is found. On return, the
10710  * I40E_FLAG_PF_MAC will be wset in pf->flags if a platform-specific value
10711  * has been selected.
10712  **/
10713 static void i40e_get_platform_mac_addr(struct pci_dev *pdev, struct i40e_pf *pf)
10714 {
10715         pf->flags &= ~I40E_FLAG_PF_MAC;
10716         if (!eth_platform_get_mac_address(&pdev->dev, pf->hw.mac.addr))
10717                 pf->flags |= I40E_FLAG_PF_MAC;
10718 }
10719
10720 /**
10721  * i40e_probe - Device initialization routine
10722  * @pdev: PCI device information struct
10723  * @ent: entry in i40e_pci_tbl
10724  *
10725  * i40e_probe initializes a PF identified by a pci_dev structure.
10726  * The OS initialization, configuring of the PF private structure,
10727  * and a hardware reset occur.
10728  *
10729  * Returns 0 on success, negative on failure
10730  **/
10731 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
10732 {
10733         struct i40e_aq_get_phy_abilities_resp abilities;
10734         struct i40e_pf *pf;
10735         struct i40e_hw *hw;
10736         static u16 pfs_found;
10737         u16 wol_nvm_bits;
10738         u16 link_status;
10739         int err;
10740         u32 val;
10741         u32 i;
10742         u8 set_fc_aq_fail;
10743
10744         err = pci_enable_device_mem(pdev);
10745         if (err)
10746                 return err;
10747
10748         /* set up for high or low dma */
10749         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10750         if (err) {
10751                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10752                 if (err) {
10753                         dev_err(&pdev->dev,
10754                                 "DMA configuration failed: 0x%x\n", err);
10755                         goto err_dma;
10756                 }
10757         }
10758
10759         /* set up pci connections */
10760         err = pci_request_mem_regions(pdev, i40e_driver_name);
10761         if (err) {
10762                 dev_info(&pdev->dev,
10763                          "pci_request_selected_regions failed %d\n", err);
10764                 goto err_pci_reg;
10765         }
10766
10767         pci_enable_pcie_error_reporting(pdev);
10768         pci_set_master(pdev);
10769
10770         /* Now that we have a PCI connection, we need to do the
10771          * low level device setup.  This is primarily setting up
10772          * the Admin Queue structures and then querying for the
10773          * device's current profile information.
10774          */
10775         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
10776         if (!pf) {
10777                 err = -ENOMEM;
10778                 goto err_pf_alloc;
10779         }
10780         pf->next_vsi = 0;
10781         pf->pdev = pdev;
10782         set_bit(__I40E_DOWN, &pf->state);
10783
10784         hw = &pf->hw;
10785         hw->back = pf;
10786
10787         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
10788                                 I40E_MAX_CSR_SPACE);
10789
10790         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
10791         if (!hw->hw_addr) {
10792                 err = -EIO;
10793                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
10794                          (unsigned int)pci_resource_start(pdev, 0),
10795                          pf->ioremap_len, err);
10796                 goto err_ioremap;
10797         }
10798         hw->vendor_id = pdev->vendor;
10799         hw->device_id = pdev->device;
10800         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10801         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10802         hw->subsystem_device_id = pdev->subsystem_device;
10803         hw->bus.device = PCI_SLOT(pdev->devfn);
10804         hw->bus.func = PCI_FUNC(pdev->devfn);
10805         pf->instance = pfs_found;
10806
10807         /* set up the locks for the AQ, do this only once in probe
10808          * and destroy them only once in remove
10809          */
10810         mutex_init(&hw->aq.asq_mutex);
10811         mutex_init(&hw->aq.arq_mutex);
10812
10813         if (debug != -1) {
10814                 pf->msg_enable = pf->hw.debug_mask;
10815                 pf->msg_enable = debug;
10816         }
10817
10818         /* do a special CORER for clearing PXE mode once at init */
10819         if (hw->revision_id == 0 &&
10820             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10821                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10822                 i40e_flush(hw);
10823                 msleep(200);
10824                 pf->corer_count++;
10825
10826                 i40e_clear_pxe_mode(hw);
10827         }
10828
10829         /* Reset here to make sure all is clean and to define PF 'n' */
10830         i40e_clear_hw(hw);
10831         err = i40e_pf_reset(hw);
10832         if (err) {
10833                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10834                 goto err_pf_reset;
10835         }
10836         pf->pfr_count++;
10837
10838         hw->aq.num_arq_entries = I40E_AQ_LEN;
10839         hw->aq.num_asq_entries = I40E_AQ_LEN;
10840         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10841         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10842         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10843
10844         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10845                  "%s-%s:misc",
10846                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10847
10848         err = i40e_init_shared_code(hw);
10849         if (err) {
10850                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10851                          err);
10852                 goto err_pf_reset;
10853         }
10854
10855         /* set up a default setting for link flow control */
10856         pf->hw.fc.requested_mode = I40E_FC_NONE;
10857
10858         err = i40e_init_adminq(hw);
10859         if (err) {
10860                 if (err == I40E_ERR_FIRMWARE_API_VERSION)
10861                         dev_info(&pdev->dev,
10862                                  "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");
10863                 else
10864                         dev_info(&pdev->dev,
10865                                  "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");
10866
10867                 goto err_pf_reset;
10868         }
10869
10870         /* provide nvm, fw, api versions */
10871         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
10872                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
10873                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
10874                  i40e_nvm_version_str(hw));
10875
10876         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10877             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10878                 dev_info(&pdev->dev,
10879                          "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");
10880         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10881                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10882                 dev_info(&pdev->dev,
10883                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10884
10885         i40e_verify_eeprom(pf);
10886
10887         /* Rev 0 hardware was never productized */
10888         if (hw->revision_id < 1)
10889                 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");
10890
10891         i40e_clear_pxe_mode(hw);
10892         err = i40e_get_capabilities(pf);
10893         if (err)
10894                 goto err_adminq_setup;
10895
10896         err = i40e_sw_init(pf);
10897         if (err) {
10898                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10899                 goto err_sw_init;
10900         }
10901
10902         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10903                                 hw->func_caps.num_rx_qp,
10904                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10905         if (err) {
10906                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10907                 goto err_init_lan_hmc;
10908         }
10909
10910         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10911         if (err) {
10912                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10913                 err = -ENOENT;
10914                 goto err_configure_lan_hmc;
10915         }
10916
10917         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10918          * Ignore error return codes because if it was already disabled via
10919          * hardware settings this will fail
10920          */
10921         if (pf->flags & I40E_FLAG_STOP_FW_LLDP) {
10922                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10923                 i40e_aq_stop_lldp(hw, true, NULL);
10924         }
10925
10926         i40e_get_mac_addr(hw, hw->mac.addr);
10927         /* allow a platform config to override the HW addr */
10928         i40e_get_platform_mac_addr(pdev, pf);
10929         if (!is_valid_ether_addr(hw->mac.addr)) {
10930                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10931                 err = -EIO;
10932                 goto err_mac_addr;
10933         }
10934         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10935         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10936         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10937         if (is_valid_ether_addr(hw->mac.port_addr))
10938                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10939 #ifdef I40E_FCOE
10940         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10941         if (err)
10942                 dev_info(&pdev->dev,
10943                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10944         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10945                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10946                          hw->mac.san_addr);
10947                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10948         }
10949         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10950 #endif /* I40E_FCOE */
10951
10952         pci_set_drvdata(pdev, pf);
10953         pci_save_state(pdev);
10954 #ifdef CONFIG_I40E_DCB
10955         err = i40e_init_pf_dcb(pf);
10956         if (err) {
10957                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10958                 pf->flags &= ~(I40E_FLAG_DCB_CAPABLE & I40E_FLAG_DCB_ENABLED);
10959                 /* Continue without DCB enabled */
10960         }
10961 #endif /* CONFIG_I40E_DCB */
10962
10963         /* set up periodic task facility */
10964         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10965         pf->service_timer_period = HZ;
10966
10967         INIT_WORK(&pf->service_task, i40e_service_task);
10968         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10969         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10970
10971         /* NVM bit on means WoL disabled for the port */
10972         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
10973         if (BIT (hw->port) & wol_nvm_bits || hw->partition_id != 1)
10974                 pf->wol_en = false;
10975         else
10976                 pf->wol_en = true;
10977         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10978
10979         /* set up the main switch operations */
10980         i40e_determine_queue_usage(pf);
10981         err = i40e_init_interrupt_scheme(pf);
10982         if (err)
10983                 goto err_switch_setup;
10984
10985         /* The number of VSIs reported by the FW is the minimum guaranteed
10986          * to us; HW supports far more and we share the remaining pool with
10987          * the other PFs. We allocate space for more than the guarantee with
10988          * the understanding that we might not get them all later.
10989          */
10990         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10991                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10992         else
10993                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10994
10995         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10996         pf->vsi = kcalloc(pf->num_alloc_vsi, sizeof(struct i40e_vsi *),
10997                           GFP_KERNEL);
10998         if (!pf->vsi) {
10999                 err = -ENOMEM;
11000                 goto err_switch_setup;
11001         }
11002
11003 #ifdef CONFIG_PCI_IOV
11004         /* prep for VF support */
11005         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
11006             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
11007             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
11008                 if (pci_num_vf(pdev))
11009                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
11010         }
11011 #endif
11012         err = i40e_setup_pf_switch(pf, false);
11013         if (err) {
11014                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
11015                 goto err_vsis;
11016         }
11017
11018         /* Make sure flow control is set according to current settings */
11019         err = i40e_set_fc(hw, &set_fc_aq_fail, true);
11020         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
11021                 dev_dbg(&pf->pdev->dev,
11022                         "Set fc with err %s aq_err %s on get_phy_cap\n",
11023                         i40e_stat_str(hw, err),
11024                         i40e_aq_str(hw, hw->aq.asq_last_status));
11025         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
11026                 dev_dbg(&pf->pdev->dev,
11027                         "Set fc with err %s aq_err %s on set_phy_config\n",
11028                         i40e_stat_str(hw, err),
11029                         i40e_aq_str(hw, hw->aq.asq_last_status));
11030         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
11031                 dev_dbg(&pf->pdev->dev,
11032                         "Set fc with err %s aq_err %s on get_link_info\n",
11033                         i40e_stat_str(hw, err),
11034                         i40e_aq_str(hw, hw->aq.asq_last_status));
11035
11036         /* if FDIR VSI was set up, start it now */
11037         for (i = 0; i < pf->num_alloc_vsi; i++) {
11038                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
11039                         i40e_vsi_open(pf->vsi[i]);
11040                         break;
11041                 }
11042         }
11043
11044         /* The driver only wants link up/down and module qualification
11045          * reports from firmware.  Note the negative logic.
11046          */
11047         err = i40e_aq_set_phy_int_mask(&pf->hw,
11048                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
11049                                          I40E_AQ_EVENT_MEDIA_NA |
11050                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
11051         if (err)
11052                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
11053                          i40e_stat_str(&pf->hw, err),
11054                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11055
11056         /* Reconfigure hardware for allowing smaller MSS in the case
11057          * of TSO, so that we avoid the MDD being fired and causing
11058          * a reset in the case of small MSS+TSO.
11059          */
11060         val = rd32(hw, I40E_REG_MSS);
11061         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
11062                 val &= ~I40E_REG_MSS_MIN_MASK;
11063                 val |= I40E_64BYTE_MSS;
11064                 wr32(hw, I40E_REG_MSS, val);
11065         }
11066
11067         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
11068                 msleep(75);
11069                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
11070                 if (err)
11071                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
11072                                  i40e_stat_str(&pf->hw, err),
11073                                  i40e_aq_str(&pf->hw,
11074                                              pf->hw.aq.asq_last_status));
11075         }
11076         /* The main driver is (mostly) up and happy. We need to set this state
11077          * before setting up the misc vector or we get a race and the vector
11078          * ends up disabled forever.
11079          */
11080         clear_bit(__I40E_DOWN, &pf->state);
11081
11082         /* In case of MSIX we are going to setup the misc vector right here
11083          * to handle admin queue events etc. In case of legacy and MSI
11084          * the misc functionality and queue processing is combined in
11085          * the same vector and that gets setup at open.
11086          */
11087         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
11088                 err = i40e_setup_misc_vector(pf);
11089                 if (err) {
11090                         dev_info(&pdev->dev,
11091                                  "setup of misc vector failed: %d\n", err);
11092                         goto err_vsis;
11093                 }
11094         }
11095
11096 #ifdef CONFIG_PCI_IOV
11097         /* prep for VF support */
11098         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
11099             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
11100             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
11101                 /* disable link interrupts for VFs */
11102                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
11103                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
11104                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
11105                 i40e_flush(hw);
11106
11107                 if (pci_num_vf(pdev)) {
11108                         dev_info(&pdev->dev,
11109                                  "Active VFs found, allocating resources.\n");
11110                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
11111                         if (err)
11112                                 dev_info(&pdev->dev,
11113                                          "Error %d allocating resources for existing VFs\n",
11114                                          err);
11115                 }
11116         }
11117 #endif /* CONFIG_PCI_IOV */
11118
11119         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11120                 pf->iwarp_base_vector = i40e_get_lump(pf, pf->irq_pile,
11121                                                       pf->num_iwarp_msix,
11122                                                       I40E_IWARP_IRQ_PILE_ID);
11123                 if (pf->iwarp_base_vector < 0) {
11124                         dev_info(&pdev->dev,
11125                                  "failed to get tracking for %d vectors for IWARP err=%d\n",
11126                                  pf->num_iwarp_msix, pf->iwarp_base_vector);
11127                         pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
11128                 }
11129         }
11130
11131         i40e_dbg_pf_init(pf);
11132
11133         /* tell the firmware that we're starting */
11134         i40e_send_version(pf);
11135
11136         /* since everything's happy, start the service_task timer */
11137         mod_timer(&pf->service_timer,
11138                   round_jiffies(jiffies + pf->service_timer_period));
11139
11140         /* add this PF to client device list and launch a client service task */
11141         err = i40e_lan_add_device(pf);
11142         if (err)
11143                 dev_info(&pdev->dev, "Failed to add PF to client API service list: %d\n",
11144                          err);
11145
11146 #ifdef I40E_FCOE
11147         /* create FCoE interface */
11148         i40e_fcoe_vsi_setup(pf);
11149
11150 #endif
11151 #define PCI_SPEED_SIZE 8
11152 #define PCI_WIDTH_SIZE 8
11153         /* Devices on the IOSF bus do not have this information
11154          * and will report PCI Gen 1 x 1 by default so don't bother
11155          * checking them.
11156          */
11157         if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
11158                 char speed[PCI_SPEED_SIZE] = "Unknown";
11159                 char width[PCI_WIDTH_SIZE] = "Unknown";
11160
11161                 /* Get the negotiated link width and speed from PCI config
11162                  * space
11163                  */
11164                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
11165                                           &link_status);
11166
11167                 i40e_set_pci_config_data(hw, link_status);
11168
11169                 switch (hw->bus.speed) {
11170                 case i40e_bus_speed_8000:
11171                         strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
11172                 case i40e_bus_speed_5000:
11173                         strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
11174                 case i40e_bus_speed_2500:
11175                         strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
11176                 default:
11177                         break;
11178                 }
11179                 switch (hw->bus.width) {
11180                 case i40e_bus_width_pcie_x8:
11181                         strncpy(width, "8", PCI_WIDTH_SIZE); break;
11182                 case i40e_bus_width_pcie_x4:
11183                         strncpy(width, "4", PCI_WIDTH_SIZE); break;
11184                 case i40e_bus_width_pcie_x2:
11185                         strncpy(width, "2", PCI_WIDTH_SIZE); break;
11186                 case i40e_bus_width_pcie_x1:
11187                         strncpy(width, "1", PCI_WIDTH_SIZE); break;
11188                 default:
11189                         break;
11190                 }
11191
11192                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
11193                          speed, width);
11194
11195                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
11196                     hw->bus.speed < i40e_bus_speed_8000) {
11197                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
11198                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
11199                 }
11200         }
11201
11202         /* get the requested speeds from the fw */
11203         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
11204         if (err)
11205                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
11206                         i40e_stat_str(&pf->hw, err),
11207                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11208         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
11209
11210         /* get the supported phy types from the fw */
11211         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
11212         if (err)
11213                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
11214                         i40e_stat_str(&pf->hw, err),
11215                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11216         pf->hw.phy.phy_types = le32_to_cpu(abilities.phy_type);
11217
11218         /* Add a filter to drop all Flow control frames from any VSI from being
11219          * transmitted. By doing so we stop a malicious VF from sending out
11220          * PAUSE or PFC frames and potentially controlling traffic for other
11221          * PF/VF VSIs.
11222          * The FW can still send Flow control frames if enabled.
11223          */
11224         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
11225                                                        pf->main_vsi_seid);
11226
11227         if ((pf->hw.device_id == I40E_DEV_ID_10G_BASE_T) ||
11228             (pf->hw.device_id == I40E_DEV_ID_10G_BASE_T4))
11229                 pf->flags |= I40E_FLAG_HAVE_10GBASET_PHY;
11230
11231         /* print a string summarizing features */
11232         i40e_print_features(pf);
11233
11234         return 0;
11235
11236         /* Unwind what we've done if something failed in the setup */
11237 err_vsis:
11238         set_bit(__I40E_DOWN, &pf->state);
11239         i40e_clear_interrupt_scheme(pf);
11240         kfree(pf->vsi);
11241 err_switch_setup:
11242         i40e_reset_interrupt_capability(pf);
11243         del_timer_sync(&pf->service_timer);
11244 err_mac_addr:
11245 err_configure_lan_hmc:
11246         (void)i40e_shutdown_lan_hmc(hw);
11247 err_init_lan_hmc:
11248         kfree(pf->qp_pile);
11249 err_sw_init:
11250 err_adminq_setup:
11251 err_pf_reset:
11252         iounmap(hw->hw_addr);
11253 err_ioremap:
11254         kfree(pf);
11255 err_pf_alloc:
11256         pci_disable_pcie_error_reporting(pdev);
11257         pci_release_mem_regions(pdev);
11258 err_pci_reg:
11259 err_dma:
11260         pci_disable_device(pdev);
11261         return err;
11262 }
11263
11264 /**
11265  * i40e_remove - Device removal routine
11266  * @pdev: PCI device information struct
11267  *
11268  * i40e_remove is called by the PCI subsystem to alert the driver
11269  * that is should release a PCI device.  This could be caused by a
11270  * Hot-Plug event, or because the driver is going to be removed from
11271  * memory.
11272  **/
11273 static void i40e_remove(struct pci_dev *pdev)
11274 {
11275         struct i40e_pf *pf = pci_get_drvdata(pdev);
11276         struct i40e_hw *hw = &pf->hw;
11277         i40e_status ret_code;
11278         int i;
11279
11280         i40e_dbg_pf_exit(pf);
11281
11282         i40e_ptp_stop(pf);
11283
11284         /* Disable RSS in hw */
11285         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), 0);
11286         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), 0);
11287
11288         /* no more scheduling of any task */
11289         set_bit(__I40E_SUSPENDED, &pf->state);
11290         set_bit(__I40E_DOWN, &pf->state);
11291         if (pf->service_timer.data)
11292                 del_timer_sync(&pf->service_timer);
11293         if (pf->service_task.func)
11294                 cancel_work_sync(&pf->service_task);
11295
11296         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
11297                 i40e_free_vfs(pf);
11298                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
11299         }
11300
11301         i40e_fdir_teardown(pf);
11302
11303         /* If there is a switch structure or any orphans, remove them.
11304          * This will leave only the PF's VSI remaining.
11305          */
11306         for (i = 0; i < I40E_MAX_VEB; i++) {
11307                 if (!pf->veb[i])
11308                         continue;
11309
11310                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
11311                     pf->veb[i]->uplink_seid == 0)
11312                         i40e_switch_branch_release(pf->veb[i]);
11313         }
11314
11315         /* Now we can shutdown the PF's VSI, just before we kill
11316          * adminq and hmc.
11317          */
11318         if (pf->vsi[pf->lan_vsi])
11319                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
11320
11321         /* remove attached clients */
11322         ret_code = i40e_lan_del_device(pf);
11323         if (ret_code) {
11324                 dev_warn(&pdev->dev, "Failed to delete client device: %d\n",
11325                          ret_code);
11326         }
11327
11328         /* shutdown and destroy the HMC */
11329         if (hw->hmc.hmc_obj) {
11330                 ret_code = i40e_shutdown_lan_hmc(hw);
11331                 if (ret_code)
11332                         dev_warn(&pdev->dev,
11333                                  "Failed to destroy the HMC resources: %d\n",
11334                                  ret_code);
11335         }
11336
11337         /* shutdown the adminq */
11338         i40e_shutdown_adminq(hw);
11339
11340         /* destroy the locks only once, here */
11341         mutex_destroy(&hw->aq.arq_mutex);
11342         mutex_destroy(&hw->aq.asq_mutex);
11343
11344         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
11345         i40e_clear_interrupt_scheme(pf);
11346         for (i = 0; i < pf->num_alloc_vsi; i++) {
11347                 if (pf->vsi[i]) {
11348                         i40e_vsi_clear_rings(pf->vsi[i]);
11349                         i40e_vsi_clear(pf->vsi[i]);
11350                         pf->vsi[i] = NULL;
11351                 }
11352         }
11353
11354         for (i = 0; i < I40E_MAX_VEB; i++) {
11355                 kfree(pf->veb[i]);
11356                 pf->veb[i] = NULL;
11357         }
11358
11359         kfree(pf->qp_pile);
11360         kfree(pf->vsi);
11361
11362         iounmap(hw->hw_addr);
11363         kfree(pf);
11364         pci_release_mem_regions(pdev);
11365
11366         pci_disable_pcie_error_reporting(pdev);
11367         pci_disable_device(pdev);
11368 }
11369
11370 /**
11371  * i40e_pci_error_detected - warning that something funky happened in PCI land
11372  * @pdev: PCI device information struct
11373  *
11374  * Called to warn that something happened and the error handling steps
11375  * are in progress.  Allows the driver to quiesce things, be ready for
11376  * remediation.
11377  **/
11378 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
11379                                                 enum pci_channel_state error)
11380 {
11381         struct i40e_pf *pf = pci_get_drvdata(pdev);
11382
11383         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
11384
11385         /* shutdown all operations */
11386         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
11387                 rtnl_lock();
11388                 i40e_prep_for_reset(pf);
11389                 rtnl_unlock();
11390         }
11391
11392         /* Request a slot reset */
11393         return PCI_ERS_RESULT_NEED_RESET;
11394 }
11395
11396 /**
11397  * i40e_pci_error_slot_reset - a PCI slot reset just happened
11398  * @pdev: PCI device information struct
11399  *
11400  * Called to find if the driver can work with the device now that
11401  * the pci slot has been reset.  If a basic connection seems good
11402  * (registers are readable and have sane content) then return a
11403  * happy little PCI_ERS_RESULT_xxx.
11404  **/
11405 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
11406 {
11407         struct i40e_pf *pf = pci_get_drvdata(pdev);
11408         pci_ers_result_t result;
11409         int err;
11410         u32 reg;
11411
11412         dev_dbg(&pdev->dev, "%s\n", __func__);
11413         if (pci_enable_device_mem(pdev)) {
11414                 dev_info(&pdev->dev,
11415                          "Cannot re-enable PCI device after reset.\n");
11416                 result = PCI_ERS_RESULT_DISCONNECT;
11417         } else {
11418                 pci_set_master(pdev);
11419                 pci_restore_state(pdev);
11420                 pci_save_state(pdev);
11421                 pci_wake_from_d3(pdev, false);
11422
11423                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
11424                 if (reg == 0)
11425                         result = PCI_ERS_RESULT_RECOVERED;
11426                 else
11427                         result = PCI_ERS_RESULT_DISCONNECT;
11428         }
11429
11430         err = pci_cleanup_aer_uncorrect_error_status(pdev);
11431         if (err) {
11432                 dev_info(&pdev->dev,
11433                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
11434                          err);
11435                 /* non-fatal, continue */
11436         }
11437
11438         return result;
11439 }
11440
11441 /**
11442  * i40e_pci_error_resume - restart operations after PCI error recovery
11443  * @pdev: PCI device information struct
11444  *
11445  * Called to allow the driver to bring things back up after PCI error
11446  * and/or reset recovery has finished.
11447  **/
11448 static void i40e_pci_error_resume(struct pci_dev *pdev)
11449 {
11450         struct i40e_pf *pf = pci_get_drvdata(pdev);
11451
11452         dev_dbg(&pdev->dev, "%s\n", __func__);
11453         if (test_bit(__I40E_SUSPENDED, &pf->state))
11454                 return;
11455
11456         rtnl_lock();
11457         i40e_handle_reset_warning(pf);
11458         rtnl_unlock();
11459 }
11460
11461 /**
11462  * i40e_shutdown - PCI callback for shutting down
11463  * @pdev: PCI device information struct
11464  **/
11465 static void i40e_shutdown(struct pci_dev *pdev)
11466 {
11467         struct i40e_pf *pf = pci_get_drvdata(pdev);
11468         struct i40e_hw *hw = &pf->hw;
11469
11470         set_bit(__I40E_SUSPENDED, &pf->state);
11471         set_bit(__I40E_DOWN, &pf->state);
11472         rtnl_lock();
11473         i40e_prep_for_reset(pf);
11474         rtnl_unlock();
11475
11476         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11477         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11478
11479         del_timer_sync(&pf->service_timer);
11480         cancel_work_sync(&pf->service_task);
11481         i40e_fdir_teardown(pf);
11482
11483         rtnl_lock();
11484         i40e_prep_for_reset(pf);
11485         rtnl_unlock();
11486
11487         wr32(hw, I40E_PFPM_APM,
11488              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11489         wr32(hw, I40E_PFPM_WUFC,
11490              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11491
11492         i40e_clear_interrupt_scheme(pf);
11493
11494         if (system_state == SYSTEM_POWER_OFF) {
11495                 pci_wake_from_d3(pdev, pf->wol_en);
11496                 pci_set_power_state(pdev, PCI_D3hot);
11497         }
11498 }
11499
11500 #ifdef CONFIG_PM
11501 /**
11502  * i40e_suspend - PCI callback for moving to D3
11503  * @pdev: PCI device information struct
11504  **/
11505 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
11506 {
11507         struct i40e_pf *pf = pci_get_drvdata(pdev);
11508         struct i40e_hw *hw = &pf->hw;
11509         int retval = 0;
11510
11511         set_bit(__I40E_SUSPENDED, &pf->state);
11512         set_bit(__I40E_DOWN, &pf->state);
11513
11514         rtnl_lock();
11515         i40e_prep_for_reset(pf);
11516         rtnl_unlock();
11517
11518         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11519         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11520
11521         i40e_stop_misc_vector(pf);
11522
11523         retval = pci_save_state(pdev);
11524         if (retval)
11525                 return retval;
11526
11527         pci_wake_from_d3(pdev, pf->wol_en);
11528         pci_set_power_state(pdev, PCI_D3hot);
11529
11530         return retval;
11531 }
11532
11533 /**
11534  * i40e_resume - PCI callback for waking up from D3
11535  * @pdev: PCI device information struct
11536  **/
11537 static int i40e_resume(struct pci_dev *pdev)
11538 {
11539         struct i40e_pf *pf = pci_get_drvdata(pdev);
11540         u32 err;
11541
11542         pci_set_power_state(pdev, PCI_D0);
11543         pci_restore_state(pdev);
11544         /* pci_restore_state() clears dev->state_saves, so
11545          * call pci_save_state() again to restore it.
11546          */
11547         pci_save_state(pdev);
11548
11549         err = pci_enable_device_mem(pdev);
11550         if (err) {
11551                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
11552                 return err;
11553         }
11554         pci_set_master(pdev);
11555
11556         /* no wakeup events while running */
11557         pci_wake_from_d3(pdev, false);
11558
11559         /* handling the reset will rebuild the device state */
11560         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
11561                 clear_bit(__I40E_DOWN, &pf->state);
11562                 rtnl_lock();
11563                 i40e_reset_and_rebuild(pf, false);
11564                 rtnl_unlock();
11565         }
11566
11567         return 0;
11568 }
11569
11570 #endif
11571 static const struct pci_error_handlers i40e_err_handler = {
11572         .error_detected = i40e_pci_error_detected,
11573         .slot_reset = i40e_pci_error_slot_reset,
11574         .resume = i40e_pci_error_resume,
11575 };
11576
11577 static struct pci_driver i40e_driver = {
11578         .name     = i40e_driver_name,
11579         .id_table = i40e_pci_tbl,
11580         .probe    = i40e_probe,
11581         .remove   = i40e_remove,
11582 #ifdef CONFIG_PM
11583         .suspend  = i40e_suspend,
11584         .resume   = i40e_resume,
11585 #endif
11586         .shutdown = i40e_shutdown,
11587         .err_handler = &i40e_err_handler,
11588         .sriov_configure = i40e_pci_sriov_configure,
11589 };
11590
11591 /**
11592  * i40e_init_module - Driver registration routine
11593  *
11594  * i40e_init_module is the first routine called when the driver is
11595  * loaded. All it does is register with the PCI subsystem.
11596  **/
11597 static int __init i40e_init_module(void)
11598 {
11599         pr_info("%s: %s - version %s\n", i40e_driver_name,
11600                 i40e_driver_string, i40e_driver_version_str);
11601         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
11602
11603         /* we will see if single thread per module is enough for now,
11604          * it can't be any worse than using the system workqueue which
11605          * was already single threaded
11606          */
11607         i40e_wq = alloc_workqueue("%s", WQ_UNBOUND | WQ_MEM_RECLAIM, 1,
11608                                   i40e_driver_name);
11609         if (!i40e_wq) {
11610                 pr_err("%s: Failed to create workqueue\n", i40e_driver_name);
11611                 return -ENOMEM;
11612         }
11613
11614         i40e_dbg_init();
11615         return pci_register_driver(&i40e_driver);
11616 }
11617 module_init(i40e_init_module);
11618
11619 /**
11620  * i40e_exit_module - Driver exit cleanup routine
11621  *
11622  * i40e_exit_module is called just before the driver is removed
11623  * from memory.
11624  **/
11625 static void __exit i40e_exit_module(void)
11626 {
11627         pci_unregister_driver(&i40e_driver);
11628         destroy_workqueue(i40e_wq);
11629         i40e_dbg_exit();
11630 }
11631 module_exit(i40e_exit_module);