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         /* Don't modify stripping options if a port VLAN is active */
2289         if (vsi->info.pvid)
2290                 return;
2291
2292         if ((vsi->info.valid_sections &
2293              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2294             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2295                 return;  /* already enabled */
2296
2297         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2298         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2299                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2300
2301         ctxt.seid = vsi->seid;
2302         ctxt.info = vsi->info;
2303         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2304         if (ret) {
2305                 dev_info(&vsi->back->pdev->dev,
2306                          "update vlan stripping failed, err %s aq_err %s\n",
2307                          i40e_stat_str(&vsi->back->hw, ret),
2308                          i40e_aq_str(&vsi->back->hw,
2309                                      vsi->back->hw.aq.asq_last_status));
2310         }
2311 }
2312
2313 /**
2314  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2315  * @vsi: the vsi being adjusted
2316  **/
2317 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2318 {
2319         struct i40e_vsi_context ctxt;
2320         i40e_status ret;
2321
2322         /* Don't modify stripping options if a port VLAN is active */
2323         if (vsi->info.pvid)
2324                 return;
2325
2326         if ((vsi->info.valid_sections &
2327              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2328             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2329              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2330                 return;  /* already disabled */
2331
2332         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2333         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2334                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2335
2336         ctxt.seid = vsi->seid;
2337         ctxt.info = vsi->info;
2338         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2339         if (ret) {
2340                 dev_info(&vsi->back->pdev->dev,
2341                          "update vlan stripping failed, err %s aq_err %s\n",
2342                          i40e_stat_str(&vsi->back->hw, ret),
2343                          i40e_aq_str(&vsi->back->hw,
2344                                      vsi->back->hw.aq.asq_last_status));
2345         }
2346 }
2347
2348 /**
2349  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2350  * @netdev: network interface to be adjusted
2351  * @features: netdev features to test if VLAN offload is enabled or not
2352  **/
2353 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2354 {
2355         struct i40e_netdev_priv *np = netdev_priv(netdev);
2356         struct i40e_vsi *vsi = np->vsi;
2357
2358         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2359                 i40e_vlan_stripping_enable(vsi);
2360         else
2361                 i40e_vlan_stripping_disable(vsi);
2362 }
2363
2364 /**
2365  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2366  * @vsi: the vsi being configured
2367  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2368  **/
2369 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2370 {
2371         struct i40e_mac_filter *f, *ftmp, *add_f;
2372         bool is_netdev, is_vf;
2373
2374         is_vf = (vsi->type == I40E_VSI_SRIOV);
2375         is_netdev = !!(vsi->netdev);
2376
2377         /* Locked once because all functions invoked below iterates list*/
2378         spin_lock_bh(&vsi->mac_filter_list_lock);
2379
2380         if (is_netdev) {
2381                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2382                                         is_vf, is_netdev);
2383                 if (!add_f) {
2384                         dev_info(&vsi->back->pdev->dev,
2385                                  "Could not add vlan filter %d for %pM\n",
2386                                  vid, vsi->netdev->dev_addr);
2387                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2388                         return -ENOMEM;
2389                 }
2390         }
2391
2392         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
2393                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2394                 if (!add_f) {
2395                         dev_info(&vsi->back->pdev->dev,
2396                                  "Could not add vlan filter %d for %pM\n",
2397                                  vid, f->macaddr);
2398                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2399                         return -ENOMEM;
2400                 }
2401         }
2402
2403         /* Now if we add a vlan tag, make sure to check if it is the first
2404          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2405          * with 0, so we now accept untagged and specified tagged traffic
2406          * (and not all tags along with untagged)
2407          */
2408         if (vid > 0) {
2409                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2410                                                   I40E_VLAN_ANY,
2411                                                   is_vf, is_netdev)) {
2412                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2413                                         I40E_VLAN_ANY, is_vf, is_netdev);
2414                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2415                                                 is_vf, is_netdev);
2416                         if (!add_f) {
2417                                 dev_info(&vsi->back->pdev->dev,
2418                                          "Could not add filter 0 for %pM\n",
2419                                          vsi->netdev->dev_addr);
2420                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2421                                 return -ENOMEM;
2422                         }
2423                 }
2424         }
2425
2426         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2427         if (vid > 0 && !vsi->info.pvid) {
2428                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
2429                         if (!i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2430                                               is_vf, is_netdev))
2431                                 continue;
2432                         i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2433                                         is_vf, is_netdev);
2434                         add_f = i40e_add_filter(vsi, f->macaddr,
2435                                                 0, is_vf, is_netdev);
2436                         if (!add_f) {
2437                                 dev_info(&vsi->back->pdev->dev,
2438                                          "Could not add filter 0 for %pM\n",
2439                                         f->macaddr);
2440                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2441                                 return -ENOMEM;
2442                         }
2443                 }
2444         }
2445
2446         spin_unlock_bh(&vsi->mac_filter_list_lock);
2447
2448         /* schedule our worker thread which will take care of
2449          * applying the new filter changes
2450          */
2451         i40e_service_event_schedule(vsi->back);
2452         return 0;
2453 }
2454
2455 /**
2456  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2457  * @vsi: the vsi being configured
2458  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2459  *
2460  * Return: 0 on success or negative otherwise
2461  **/
2462 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2463 {
2464         struct net_device *netdev = vsi->netdev;
2465         struct i40e_mac_filter *f, *ftmp, *add_f;
2466         bool is_vf, is_netdev;
2467         int filter_count = 0;
2468
2469         is_vf = (vsi->type == I40E_VSI_SRIOV);
2470         is_netdev = !!(netdev);
2471
2472         /* Locked once because all functions invoked below iterates list */
2473         spin_lock_bh(&vsi->mac_filter_list_lock);
2474
2475         if (is_netdev)
2476                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2477
2478         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
2479                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2480
2481         /* go through all the filters for this VSI and if there is only
2482          * vid == 0 it means there are no other filters, so vid 0 must
2483          * be replaced with -1. This signifies that we should from now
2484          * on accept any traffic (with any tag present, or untagged)
2485          */
2486         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2487                 if (is_netdev) {
2488                         if (f->vlan &&
2489                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2490                                 filter_count++;
2491                 }
2492
2493                 if (f->vlan)
2494                         filter_count++;
2495         }
2496
2497         if (!filter_count && is_netdev) {
2498                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2499                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2500                                     is_vf, is_netdev);
2501                 if (!f) {
2502                         dev_info(&vsi->back->pdev->dev,
2503                                  "Could not add filter %d for %pM\n",
2504                                  I40E_VLAN_ANY, netdev->dev_addr);
2505                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2506                         return -ENOMEM;
2507                 }
2508         }
2509
2510         if (!filter_count) {
2511                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
2512                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2513                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2514                                                 is_vf, is_netdev);
2515                         if (!add_f) {
2516                                 dev_info(&vsi->back->pdev->dev,
2517                                          "Could not add filter %d for %pM\n",
2518                                          I40E_VLAN_ANY, f->macaddr);
2519                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2520                                 return -ENOMEM;
2521                         }
2522                 }
2523         }
2524
2525         spin_unlock_bh(&vsi->mac_filter_list_lock);
2526
2527         /* schedule our worker thread which will take care of
2528          * applying the new filter changes
2529          */
2530         i40e_service_event_schedule(vsi->back);
2531         return 0;
2532 }
2533
2534 /**
2535  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2536  * @netdev: network interface to be adjusted
2537  * @vid: vlan id to be added
2538  *
2539  * net_device_ops implementation for adding vlan ids
2540  **/
2541 #ifdef I40E_FCOE
2542 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2543                          __always_unused __be16 proto, u16 vid)
2544 #else
2545 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2546                                 __always_unused __be16 proto, u16 vid)
2547 #endif
2548 {
2549         struct i40e_netdev_priv *np = netdev_priv(netdev);
2550         struct i40e_vsi *vsi = np->vsi;
2551         int ret = 0;
2552
2553         if (vid > 4095)
2554                 return -EINVAL;
2555
2556         /* If the network stack called us with vid = 0 then
2557          * it is asking to receive priority tagged packets with
2558          * vlan id 0.  Our HW receives them by default when configured
2559          * to receive untagged packets so there is no need to add an
2560          * extra filter for vlan 0 tagged packets.
2561          */
2562         if (vid)
2563                 ret = i40e_vsi_add_vlan(vsi, vid);
2564
2565         if (!ret && (vid < VLAN_N_VID))
2566                 set_bit(vid, vsi->active_vlans);
2567
2568         return ret;
2569 }
2570
2571 /**
2572  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2573  * @netdev: network interface to be adjusted
2574  * @vid: vlan id to be removed
2575  *
2576  * net_device_ops implementation for removing vlan ids
2577  **/
2578 #ifdef I40E_FCOE
2579 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2580                           __always_unused __be16 proto, u16 vid)
2581 #else
2582 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2583                                  __always_unused __be16 proto, u16 vid)
2584 #endif
2585 {
2586         struct i40e_netdev_priv *np = netdev_priv(netdev);
2587         struct i40e_vsi *vsi = np->vsi;
2588
2589         /* return code is ignored as there is nothing a user
2590          * can do about failure to remove and a log message was
2591          * already printed from the other function
2592          */
2593         i40e_vsi_kill_vlan(vsi, vid);
2594
2595         clear_bit(vid, vsi->active_vlans);
2596
2597         return 0;
2598 }
2599
2600 /**
2601  * i40e_macaddr_init - explicitly write the mac address filters
2602  *
2603  * @vsi: pointer to the vsi
2604  * @macaddr: the MAC address
2605  *
2606  * This is needed when the macaddr has been obtained by other
2607  * means than the default, e.g., from Open Firmware or IDPROM.
2608  * Returns 0 on success, negative on failure
2609  **/
2610 static int i40e_macaddr_init(struct i40e_vsi *vsi, u8 *macaddr)
2611 {
2612         int ret;
2613         struct i40e_aqc_add_macvlan_element_data element;
2614
2615         ret = i40e_aq_mac_address_write(&vsi->back->hw,
2616                                         I40E_AQC_WRITE_TYPE_LAA_WOL,
2617                                         macaddr, NULL);
2618         if (ret) {
2619                 dev_info(&vsi->back->pdev->dev,
2620                          "Addr change for VSI failed: %d\n", ret);
2621                 return -EADDRNOTAVAIL;
2622         }
2623
2624         memset(&element, 0, sizeof(element));
2625         ether_addr_copy(element.mac_addr, macaddr);
2626         element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
2627         ret = i40e_aq_add_macvlan(&vsi->back->hw, vsi->seid, &element, 1, NULL);
2628         if (ret) {
2629                 dev_info(&vsi->back->pdev->dev,
2630                          "add filter failed err %s aq_err %s\n",
2631                          i40e_stat_str(&vsi->back->hw, ret),
2632                          i40e_aq_str(&vsi->back->hw,
2633                                      vsi->back->hw.aq.asq_last_status));
2634         }
2635         return ret;
2636 }
2637
2638 /**
2639  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2640  * @vsi: the vsi being brought back up
2641  **/
2642 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2643 {
2644         u16 vid;
2645
2646         if (!vsi->netdev)
2647                 return;
2648
2649         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2650
2651         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2652                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2653                                      vid);
2654 }
2655
2656 /**
2657  * i40e_vsi_add_pvid - Add pvid for the VSI
2658  * @vsi: the vsi being adjusted
2659  * @vid: the vlan id to set as a PVID
2660  **/
2661 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2662 {
2663         struct i40e_vsi_context ctxt;
2664         i40e_status ret;
2665
2666         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2667         vsi->info.pvid = cpu_to_le16(vid);
2668         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2669                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2670                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2671
2672         ctxt.seid = vsi->seid;
2673         ctxt.info = vsi->info;
2674         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2675         if (ret) {
2676                 dev_info(&vsi->back->pdev->dev,
2677                          "add pvid failed, err %s aq_err %s\n",
2678                          i40e_stat_str(&vsi->back->hw, ret),
2679                          i40e_aq_str(&vsi->back->hw,
2680                                      vsi->back->hw.aq.asq_last_status));
2681                 return -ENOENT;
2682         }
2683
2684         return 0;
2685 }
2686
2687 /**
2688  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2689  * @vsi: the vsi being adjusted
2690  *
2691  * Just use the vlan_rx_register() service to put it back to normal
2692  **/
2693 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2694 {
2695         i40e_vlan_stripping_disable(vsi);
2696
2697         vsi->info.pvid = 0;
2698 }
2699
2700 /**
2701  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2702  * @vsi: ptr to the VSI
2703  *
2704  * If this function returns with an error, then it's possible one or
2705  * more of the rings is populated (while the rest are not).  It is the
2706  * callers duty to clean those orphaned rings.
2707  *
2708  * Return 0 on success, negative on failure
2709  **/
2710 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2711 {
2712         int i, err = 0;
2713
2714         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2715                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2716
2717         return err;
2718 }
2719
2720 /**
2721  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2722  * @vsi: ptr to the VSI
2723  *
2724  * Free VSI's transmit software resources
2725  **/
2726 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2727 {
2728         int i;
2729
2730         if (!vsi->tx_rings)
2731                 return;
2732
2733         for (i = 0; i < vsi->num_queue_pairs; i++)
2734                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2735                         i40e_free_tx_resources(vsi->tx_rings[i]);
2736 }
2737
2738 /**
2739  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2740  * @vsi: ptr to the VSI
2741  *
2742  * If this function returns with an error, then it's possible one or
2743  * more of the rings is populated (while the rest are not).  It is the
2744  * callers duty to clean those orphaned rings.
2745  *
2746  * Return 0 on success, negative on failure
2747  **/
2748 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2749 {
2750         int i, err = 0;
2751
2752         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2753                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2754 #ifdef I40E_FCOE
2755         i40e_fcoe_setup_ddp_resources(vsi);
2756 #endif
2757         return err;
2758 }
2759
2760 /**
2761  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2762  * @vsi: ptr to the VSI
2763  *
2764  * Free all receive software resources
2765  **/
2766 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2767 {
2768         int i;
2769
2770         if (!vsi->rx_rings)
2771                 return;
2772
2773         for (i = 0; i < vsi->num_queue_pairs; i++)
2774                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2775                         i40e_free_rx_resources(vsi->rx_rings[i]);
2776 #ifdef I40E_FCOE
2777         i40e_fcoe_free_ddp_resources(vsi);
2778 #endif
2779 }
2780
2781 /**
2782  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2783  * @ring: The Tx ring to configure
2784  *
2785  * This enables/disables XPS for a given Tx descriptor ring
2786  * based on the TCs enabled for the VSI that ring belongs to.
2787  **/
2788 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2789 {
2790         struct i40e_vsi *vsi = ring->vsi;
2791         cpumask_var_t mask;
2792
2793         if (!ring->q_vector || !ring->netdev)
2794                 return;
2795
2796         /* Single TC mode enable XPS */
2797         if (vsi->tc_config.numtc <= 1) {
2798                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2799                         netif_set_xps_queue(ring->netdev,
2800                                             &ring->q_vector->affinity_mask,
2801                                             ring->queue_index);
2802         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2803                 /* Disable XPS to allow selection based on TC */
2804                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2805                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2806                 free_cpumask_var(mask);
2807         }
2808
2809         /* schedule our worker thread which will take care of
2810          * applying the new filter changes
2811          */
2812         i40e_service_event_schedule(vsi->back);
2813 }
2814
2815 /**
2816  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2817  * @ring: The Tx ring to configure
2818  *
2819  * Configure the Tx descriptor ring in the HMC context.
2820  **/
2821 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2822 {
2823         struct i40e_vsi *vsi = ring->vsi;
2824         u16 pf_q = vsi->base_queue + ring->queue_index;
2825         struct i40e_hw *hw = &vsi->back->hw;
2826         struct i40e_hmc_obj_txq tx_ctx;
2827         i40e_status err = 0;
2828         u32 qtx_ctl = 0;
2829
2830         /* some ATR related tx ring init */
2831         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2832                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2833                 ring->atr_count = 0;
2834         } else {
2835                 ring->atr_sample_rate = 0;
2836         }
2837
2838         /* configure XPS */
2839         i40e_config_xps_tx_ring(ring);
2840
2841         /* clear the context structure first */
2842         memset(&tx_ctx, 0, sizeof(tx_ctx));
2843
2844         tx_ctx.new_context = 1;
2845         tx_ctx.base = (ring->dma / 128);
2846         tx_ctx.qlen = ring->count;
2847         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2848                                                I40E_FLAG_FD_ATR_ENABLED));
2849 #ifdef I40E_FCOE
2850         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2851 #endif
2852         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2853         /* FDIR VSI tx ring can still use RS bit and writebacks */
2854         if (vsi->type != I40E_VSI_FDIR)
2855                 tx_ctx.head_wb_ena = 1;
2856         tx_ctx.head_wb_addr = ring->dma +
2857                               (ring->count * sizeof(struct i40e_tx_desc));
2858
2859         /* As part of VSI creation/update, FW allocates certain
2860          * Tx arbitration queue sets for each TC enabled for
2861          * the VSI. The FW returns the handles to these queue
2862          * sets as part of the response buffer to Add VSI,
2863          * Update VSI, etc. AQ commands. It is expected that
2864          * these queue set handles be associated with the Tx
2865          * queues by the driver as part of the TX queue context
2866          * initialization. This has to be done regardless of
2867          * DCB as by default everything is mapped to TC0.
2868          */
2869         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2870         tx_ctx.rdylist_act = 0;
2871
2872         /* clear the context in the HMC */
2873         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2874         if (err) {
2875                 dev_info(&vsi->back->pdev->dev,
2876                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2877                          ring->queue_index, pf_q, err);
2878                 return -ENOMEM;
2879         }
2880
2881         /* set the context in the HMC */
2882         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2883         if (err) {
2884                 dev_info(&vsi->back->pdev->dev,
2885                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2886                          ring->queue_index, pf_q, err);
2887                 return -ENOMEM;
2888         }
2889
2890         /* Now associate this queue with this PCI function */
2891         if (vsi->type == I40E_VSI_VMDQ2) {
2892                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2893                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2894                            I40E_QTX_CTL_VFVM_INDX_MASK;
2895         } else {
2896                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2897         }
2898
2899         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2900                     I40E_QTX_CTL_PF_INDX_MASK);
2901         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2902         i40e_flush(hw);
2903
2904         /* cache tail off for easier writes later */
2905         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2906
2907         return 0;
2908 }
2909
2910 /**
2911  * i40e_configure_rx_ring - Configure a receive ring context
2912  * @ring: The Rx ring to configure
2913  *
2914  * Configure the Rx descriptor ring in the HMC context.
2915  **/
2916 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2917 {
2918         struct i40e_vsi *vsi = ring->vsi;
2919         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2920         u16 pf_q = vsi->base_queue + ring->queue_index;
2921         struct i40e_hw *hw = &vsi->back->hw;
2922         struct i40e_hmc_obj_rxq rx_ctx;
2923         i40e_status err = 0;
2924
2925         ring->state = 0;
2926
2927         /* clear the context structure first */
2928         memset(&rx_ctx, 0, sizeof(rx_ctx));
2929
2930         ring->rx_buf_len = vsi->rx_buf_len;
2931
2932         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2933
2934         rx_ctx.base = (ring->dma / 128);
2935         rx_ctx.qlen = ring->count;
2936
2937         /* use 32 byte descriptors */
2938         rx_ctx.dsize = 1;
2939
2940         /* descriptor type is always zero
2941          * rx_ctx.dtype = 0;
2942          */
2943         rx_ctx.hsplit_0 = 0;
2944
2945         rx_ctx.rxmax = min_t(u16, vsi->max_frame, chain_len * ring->rx_buf_len);
2946         if (hw->revision_id == 0)
2947                 rx_ctx.lrxqthresh = 0;
2948         else
2949                 rx_ctx.lrxqthresh = 2;
2950         rx_ctx.crcstrip = 1;
2951         rx_ctx.l2tsel = 1;
2952         /* this controls whether VLAN is stripped from inner headers */
2953         rx_ctx.showiv = 0;
2954 #ifdef I40E_FCOE
2955         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2956 #endif
2957         /* set the prefena field to 1 because the manual says to */
2958         rx_ctx.prefena = 1;
2959
2960         /* clear the context in the HMC */
2961         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2962         if (err) {
2963                 dev_info(&vsi->back->pdev->dev,
2964                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2965                          ring->queue_index, pf_q, err);
2966                 return -ENOMEM;
2967         }
2968
2969         /* set the context in the HMC */
2970         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2971         if (err) {
2972                 dev_info(&vsi->back->pdev->dev,
2973                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2974                          ring->queue_index, pf_q, err);
2975                 return -ENOMEM;
2976         }
2977
2978         /* cache tail for quicker writes, and clear the reg before use */
2979         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2980         writel(0, ring->tail);
2981
2982         i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
2983
2984         return 0;
2985 }
2986
2987 /**
2988  * i40e_vsi_configure_tx - Configure the VSI for Tx
2989  * @vsi: VSI structure describing this set of rings and resources
2990  *
2991  * Configure the Tx VSI for operation.
2992  **/
2993 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2994 {
2995         int err = 0;
2996         u16 i;
2997
2998         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2999                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
3000
3001         return err;
3002 }
3003
3004 /**
3005  * i40e_vsi_configure_rx - Configure the VSI for Rx
3006  * @vsi: the VSI being configured
3007  *
3008  * Configure the Rx VSI for operation.
3009  **/
3010 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
3011 {
3012         int err = 0;
3013         u16 i;
3014
3015         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
3016                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
3017                                + ETH_FCS_LEN + VLAN_HLEN;
3018         else
3019                 vsi->max_frame = I40E_RXBUFFER_2048;
3020
3021         vsi->rx_buf_len = I40E_RXBUFFER_2048;
3022
3023 #ifdef I40E_FCOE
3024         /* setup rx buffer for FCoE */
3025         if ((vsi->type == I40E_VSI_FCOE) &&
3026             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
3027                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
3028                 vsi->max_frame = I40E_RXBUFFER_3072;
3029         }
3030
3031 #endif /* I40E_FCOE */
3032         /* round up for the chip's needs */
3033         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
3034                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
3035
3036         /* set up individual rings */
3037         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3038                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
3039
3040         return err;
3041 }
3042
3043 /**
3044  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
3045  * @vsi: ptr to the VSI
3046  **/
3047 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
3048 {
3049         struct i40e_ring *tx_ring, *rx_ring;
3050         u16 qoffset, qcount;
3051         int i, n;
3052
3053         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
3054                 /* Reset the TC information */
3055                 for (i = 0; i < vsi->num_queue_pairs; i++) {
3056                         rx_ring = vsi->rx_rings[i];
3057                         tx_ring = vsi->tx_rings[i];
3058                         rx_ring->dcb_tc = 0;
3059                         tx_ring->dcb_tc = 0;
3060                 }
3061         }
3062
3063         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
3064                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
3065                         continue;
3066
3067                 qoffset = vsi->tc_config.tc_info[n].qoffset;
3068                 qcount = vsi->tc_config.tc_info[n].qcount;
3069                 for (i = qoffset; i < (qoffset + qcount); i++) {
3070                         rx_ring = vsi->rx_rings[i];
3071                         tx_ring = vsi->tx_rings[i];
3072                         rx_ring->dcb_tc = n;
3073                         tx_ring->dcb_tc = n;
3074                 }
3075         }
3076 }
3077
3078 /**
3079  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
3080  * @vsi: ptr to the VSI
3081  **/
3082 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
3083 {
3084         struct i40e_pf *pf = vsi->back;
3085         int err;
3086
3087         if (vsi->netdev)
3088                 i40e_set_rx_mode(vsi->netdev);
3089
3090         if (!!(pf->flags & I40E_FLAG_PF_MAC)) {
3091                 err = i40e_macaddr_init(vsi, pf->hw.mac.addr);
3092                 if (err) {
3093                         dev_warn(&pf->pdev->dev,
3094                                  "could not set up macaddr; err %d\n", err);
3095                 }
3096         }
3097 }
3098
3099 /**
3100  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
3101  * @vsi: Pointer to the targeted VSI
3102  *
3103  * This function replays the hlist on the hw where all the SB Flow Director
3104  * filters were saved.
3105  **/
3106 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
3107 {
3108         struct i40e_fdir_filter *filter;
3109         struct i40e_pf *pf = vsi->back;
3110         struct hlist_node *node;
3111
3112         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3113                 return;
3114
3115         hlist_for_each_entry_safe(filter, node,
3116                                   &pf->fdir_filter_list, fdir_node) {
3117                 i40e_add_del_fdir(vsi, filter, true);
3118         }
3119 }
3120
3121 /**
3122  * i40e_vsi_configure - Set up the VSI for action
3123  * @vsi: the VSI being configured
3124  **/
3125 static int i40e_vsi_configure(struct i40e_vsi *vsi)
3126 {
3127         int err;
3128
3129         i40e_set_vsi_rx_mode(vsi);
3130         i40e_restore_vlan(vsi);
3131         i40e_vsi_config_dcb_rings(vsi);
3132         err = i40e_vsi_configure_tx(vsi);
3133         if (!err)
3134                 err = i40e_vsi_configure_rx(vsi);
3135
3136         return err;
3137 }
3138
3139 /**
3140  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
3141  * @vsi: the VSI being configured
3142  **/
3143 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
3144 {
3145         struct i40e_pf *pf = vsi->back;
3146         struct i40e_hw *hw = &pf->hw;
3147         u16 vector;
3148         int i, q;
3149         u32 qp;
3150
3151         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
3152          * and PFINT_LNKLSTn registers, e.g.:
3153          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
3154          */
3155         qp = vsi->base_queue;
3156         vector = vsi->base_vector;
3157         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3158                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
3159
3160                 q_vector->itr_countdown = ITR_COUNTDOWN_START;
3161                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[i]->rx_itr_setting);
3162                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
3163                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3164                      q_vector->rx.itr);
3165                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[i]->tx_itr_setting);
3166                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
3167                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3168                      q_vector->tx.itr);
3169                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
3170                      INTRL_USEC_TO_REG(vsi->int_rate_limit));
3171
3172                 /* Linked list for the queuepairs assigned to this vector */
3173                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
3174                 for (q = 0; q < q_vector->num_ringpairs; q++) {
3175                         u32 val;
3176
3177                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3178                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
3179                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
3180                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
3181                               (I40E_QUEUE_TYPE_TX
3182                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
3183
3184                         wr32(hw, I40E_QINT_RQCTL(qp), val);
3185
3186                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3187                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
3188                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3189                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
3190                               (I40E_QUEUE_TYPE_RX
3191                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3192
3193                         /* Terminate the linked list */
3194                         if (q == (q_vector->num_ringpairs - 1))
3195                                 val |= (I40E_QUEUE_END_OF_LIST
3196                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3197
3198                         wr32(hw, I40E_QINT_TQCTL(qp), val);
3199                         qp++;
3200                 }
3201         }
3202
3203         i40e_flush(hw);
3204 }
3205
3206 /**
3207  * i40e_enable_misc_int_causes - enable the non-queue interrupts
3208  * @hw: ptr to the hardware info
3209  **/
3210 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
3211 {
3212         struct i40e_hw *hw = &pf->hw;
3213         u32 val;
3214
3215         /* clear things first */
3216         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
3217         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
3218
3219         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
3220               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
3221               I40E_PFINT_ICR0_ENA_GRST_MASK          |
3222               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
3223               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
3224               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
3225               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
3226               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3227
3228         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
3229                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3230
3231         if (pf->flags & I40E_FLAG_PTP)
3232                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3233
3234         wr32(hw, I40E_PFINT_ICR0_ENA, val);
3235
3236         /* SW_ITR_IDX = 0, but don't change INTENA */
3237         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
3238                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
3239
3240         /* OTHER_ITR_IDX = 0 */
3241         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
3242 }
3243
3244 /**
3245  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3246  * @vsi: the VSI being configured
3247  **/
3248 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3249 {
3250         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3251         struct i40e_pf *pf = vsi->back;
3252         struct i40e_hw *hw = &pf->hw;
3253         u32 val;
3254
3255         /* set the ITR configuration */
3256         q_vector->itr_countdown = ITR_COUNTDOWN_START;
3257         q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[0]->rx_itr_setting);
3258         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3259         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3260         q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[0]->tx_itr_setting);
3261         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3262         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3263
3264         i40e_enable_misc_int_causes(pf);
3265
3266         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3267         wr32(hw, I40E_PFINT_LNKLST0, 0);
3268
3269         /* Associate the queue pair to the vector and enable the queue int */
3270         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3271               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3272               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3273
3274         wr32(hw, I40E_QINT_RQCTL(0), val);
3275
3276         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3277               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3278               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3279
3280         wr32(hw, I40E_QINT_TQCTL(0), val);
3281         i40e_flush(hw);
3282 }
3283
3284 /**
3285  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3286  * @pf: board private structure
3287  **/
3288 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3289 {
3290         struct i40e_hw *hw = &pf->hw;
3291
3292         wr32(hw, I40E_PFINT_DYN_CTL0,
3293              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3294         i40e_flush(hw);
3295 }
3296
3297 /**
3298  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3299  * @pf: board private structure
3300  * @clearpba: true when all pending interrupt events should be cleared
3301  **/
3302 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf, bool clearpba)
3303 {
3304         struct i40e_hw *hw = &pf->hw;
3305         u32 val;
3306
3307         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3308               (clearpba ? I40E_PFINT_DYN_CTL0_CLEARPBA_MASK : 0) |
3309               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3310
3311         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3312         i40e_flush(hw);
3313 }
3314
3315 /**
3316  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3317  * @irq: interrupt number
3318  * @data: pointer to a q_vector
3319  **/
3320 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3321 {
3322         struct i40e_q_vector *q_vector = data;
3323
3324         if (!q_vector->tx.ring && !q_vector->rx.ring)
3325                 return IRQ_HANDLED;
3326
3327         napi_schedule_irqoff(&q_vector->napi);
3328
3329         return IRQ_HANDLED;
3330 }
3331
3332 /**
3333  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3334  * @vsi: the VSI being configured
3335  * @basename: name for the vector
3336  *
3337  * Allocates MSI-X vectors and requests interrupts from the kernel.
3338  **/
3339 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3340 {
3341         int q_vectors = vsi->num_q_vectors;
3342         struct i40e_pf *pf = vsi->back;
3343         int base = vsi->base_vector;
3344         int rx_int_idx = 0;
3345         int tx_int_idx = 0;
3346         int vector, err;
3347
3348         for (vector = 0; vector < q_vectors; vector++) {
3349                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3350
3351                 if (q_vector->tx.ring && q_vector->rx.ring) {
3352                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3353                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3354                         tx_int_idx++;
3355                 } else if (q_vector->rx.ring) {
3356                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3357                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3358                 } else if (q_vector->tx.ring) {
3359                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3360                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3361                 } else {
3362                         /* skip this unused q_vector */
3363                         continue;
3364                 }
3365                 err = request_irq(pf->msix_entries[base + vector].vector,
3366                                   vsi->irq_handler,
3367                                   0,
3368                                   q_vector->name,
3369                                   q_vector);
3370                 if (err) {
3371                         dev_info(&pf->pdev->dev,
3372                                  "MSIX request_irq failed, error: %d\n", err);
3373                         goto free_queue_irqs;
3374                 }
3375                 /* assign the mask for this irq */
3376                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3377                                       &q_vector->affinity_mask);
3378         }
3379
3380         vsi->irqs_ready = true;
3381         return 0;
3382
3383 free_queue_irqs:
3384         while (vector) {
3385                 vector--;
3386                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3387                                       NULL);
3388                 free_irq(pf->msix_entries[base + vector].vector,
3389                          &(vsi->q_vectors[vector]));
3390         }
3391         return err;
3392 }
3393
3394 /**
3395  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3396  * @vsi: the VSI being un-configured
3397  **/
3398 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3399 {
3400         struct i40e_pf *pf = vsi->back;
3401         struct i40e_hw *hw = &pf->hw;
3402         int base = vsi->base_vector;
3403         int i;
3404
3405         for (i = 0; i < vsi->num_queue_pairs; i++) {
3406                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3407                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3408         }
3409
3410         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3411                 for (i = vsi->base_vector;
3412                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3413                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3414
3415                 i40e_flush(hw);
3416                 for (i = 0; i < vsi->num_q_vectors; i++)
3417                         synchronize_irq(pf->msix_entries[i + base].vector);
3418         } else {
3419                 /* Legacy and MSI mode - this stops all interrupt handling */
3420                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3421                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3422                 i40e_flush(hw);
3423                 synchronize_irq(pf->pdev->irq);
3424         }
3425 }
3426
3427 /**
3428  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3429  * @vsi: the VSI being configured
3430  **/
3431 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3432 {
3433         struct i40e_pf *pf = vsi->back;
3434         int i;
3435
3436         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3437                 for (i = 0; i < vsi->num_q_vectors; i++)
3438                         i40e_irq_dynamic_enable(vsi, i);
3439         } else {
3440                 i40e_irq_dynamic_enable_icr0(pf, true);
3441         }
3442
3443         i40e_flush(&pf->hw);
3444         return 0;
3445 }
3446
3447 /**
3448  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3449  * @pf: board private structure
3450  **/
3451 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3452 {
3453         /* Disable ICR 0 */
3454         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3455         i40e_flush(&pf->hw);
3456 }
3457
3458 /**
3459  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3460  * @irq: interrupt number
3461  * @data: pointer to a q_vector
3462  *
3463  * This is the handler used for all MSI/Legacy interrupts, and deals
3464  * with both queue and non-queue interrupts.  This is also used in
3465  * MSIX mode to handle the non-queue interrupts.
3466  **/
3467 static irqreturn_t i40e_intr(int irq, void *data)
3468 {
3469         struct i40e_pf *pf = (struct i40e_pf *)data;
3470         struct i40e_hw *hw = &pf->hw;
3471         irqreturn_t ret = IRQ_NONE;
3472         u32 icr0, icr0_remaining;
3473         u32 val, ena_mask;
3474
3475         icr0 = rd32(hw, I40E_PFINT_ICR0);
3476         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3477
3478         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3479         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3480                 goto enable_intr;
3481
3482         /* if interrupt but no bits showing, must be SWINT */
3483         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3484             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3485                 pf->sw_int_count++;
3486
3487         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3488             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3489                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3490                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3491                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3492         }
3493
3494         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3495         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3496                 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
3497                 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3498
3499                 /* We do not have a way to disarm Queue causes while leaving
3500                  * interrupt enabled for all other causes, ideally
3501                  * interrupt should be disabled while we are in NAPI but
3502                  * this is not a performance path and napi_schedule()
3503                  * can deal with rescheduling.
3504                  */
3505                 if (!test_bit(__I40E_DOWN, &pf->state))
3506                         napi_schedule_irqoff(&q_vector->napi);
3507         }
3508
3509         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3510                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3511                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3512                 i40e_debug(&pf->hw, I40E_DEBUG_NVM, "AdminQ event\n");
3513         }
3514
3515         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3516                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3517                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3518         }
3519
3520         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3521                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3522                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3523         }
3524
3525         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3526                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3527                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3528                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3529                 val = rd32(hw, I40E_GLGEN_RSTAT);
3530                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3531                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3532                 if (val == I40E_RESET_CORER) {
3533                         pf->corer_count++;
3534                 } else if (val == I40E_RESET_GLOBR) {
3535                         pf->globr_count++;
3536                 } else if (val == I40E_RESET_EMPR) {
3537                         pf->empr_count++;
3538                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3539                 }
3540         }
3541
3542         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3543                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3544                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3545                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3546                          rd32(hw, I40E_PFHMC_ERRORINFO),
3547                          rd32(hw, I40E_PFHMC_ERRORDATA));
3548         }
3549
3550         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3551                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3552
3553                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3554                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3555                         i40e_ptp_tx_hwtstamp(pf);
3556                 }
3557         }
3558
3559         /* If a critical error is pending we have no choice but to reset the
3560          * device.
3561          * Report and mask out any remaining unexpected interrupts.
3562          */
3563         icr0_remaining = icr0 & ena_mask;
3564         if (icr0_remaining) {
3565                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3566                          icr0_remaining);
3567                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3568                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3569                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3570                         dev_info(&pf->pdev->dev, "device will be reset\n");
3571                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3572                         i40e_service_event_schedule(pf);
3573                 }
3574                 ena_mask &= ~icr0_remaining;
3575         }
3576         ret = IRQ_HANDLED;
3577
3578 enable_intr:
3579         /* re-enable interrupt causes */
3580         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3581         if (!test_bit(__I40E_DOWN, &pf->state)) {
3582                 i40e_service_event_schedule(pf);
3583                 i40e_irq_dynamic_enable_icr0(pf, false);
3584         }
3585
3586         return ret;
3587 }
3588
3589 /**
3590  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3591  * @tx_ring:  tx ring to clean
3592  * @budget:   how many cleans we're allowed
3593  *
3594  * Returns true if there's any budget left (e.g. the clean is finished)
3595  **/
3596 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3597 {
3598         struct i40e_vsi *vsi = tx_ring->vsi;
3599         u16 i = tx_ring->next_to_clean;
3600         struct i40e_tx_buffer *tx_buf;
3601         struct i40e_tx_desc *tx_desc;
3602
3603         tx_buf = &tx_ring->tx_bi[i];
3604         tx_desc = I40E_TX_DESC(tx_ring, i);
3605         i -= tx_ring->count;
3606
3607         do {
3608                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3609
3610                 /* if next_to_watch is not set then there is no work pending */
3611                 if (!eop_desc)
3612                         break;
3613
3614                 /* prevent any other reads prior to eop_desc */
3615                 smp_rmb();
3616
3617                 /* if the descriptor isn't done, no work yet to do */
3618                 if (!(eop_desc->cmd_type_offset_bsz &
3619                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3620                         break;
3621
3622                 /* clear next_to_watch to prevent false hangs */
3623                 tx_buf->next_to_watch = NULL;
3624
3625                 tx_desc->buffer_addr = 0;
3626                 tx_desc->cmd_type_offset_bsz = 0;
3627                 /* move past filter desc */
3628                 tx_buf++;
3629                 tx_desc++;
3630                 i++;
3631                 if (unlikely(!i)) {
3632                         i -= tx_ring->count;
3633                         tx_buf = tx_ring->tx_bi;
3634                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3635                 }
3636                 /* unmap skb header data */
3637                 dma_unmap_single(tx_ring->dev,
3638                                  dma_unmap_addr(tx_buf, dma),
3639                                  dma_unmap_len(tx_buf, len),
3640                                  DMA_TO_DEVICE);
3641                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3642                         kfree(tx_buf->raw_buf);
3643
3644                 tx_buf->raw_buf = NULL;
3645                 tx_buf->tx_flags = 0;
3646                 tx_buf->next_to_watch = NULL;
3647                 dma_unmap_len_set(tx_buf, len, 0);
3648                 tx_desc->buffer_addr = 0;
3649                 tx_desc->cmd_type_offset_bsz = 0;
3650
3651                 /* move us past the eop_desc for start of next FD desc */
3652                 tx_buf++;
3653                 tx_desc++;
3654                 i++;
3655                 if (unlikely(!i)) {
3656                         i -= tx_ring->count;
3657                         tx_buf = tx_ring->tx_bi;
3658                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3659                 }
3660
3661                 /* update budget accounting */
3662                 budget--;
3663         } while (likely(budget));
3664
3665         i += tx_ring->count;
3666         tx_ring->next_to_clean = i;
3667
3668         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
3669                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3670
3671         return budget > 0;
3672 }
3673
3674 /**
3675  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3676  * @irq: interrupt number
3677  * @data: pointer to a q_vector
3678  **/
3679 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3680 {
3681         struct i40e_q_vector *q_vector = data;
3682         struct i40e_vsi *vsi;
3683
3684         if (!q_vector->tx.ring)
3685                 return IRQ_HANDLED;
3686
3687         vsi = q_vector->tx.ring->vsi;
3688         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3689
3690         return IRQ_HANDLED;
3691 }
3692
3693 /**
3694  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3695  * @vsi: the VSI being configured
3696  * @v_idx: vector index
3697  * @qp_idx: queue pair index
3698  **/
3699 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3700 {
3701         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3702         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3703         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3704
3705         tx_ring->q_vector = q_vector;
3706         tx_ring->next = q_vector->tx.ring;
3707         q_vector->tx.ring = tx_ring;
3708         q_vector->tx.count++;
3709
3710         rx_ring->q_vector = q_vector;
3711         rx_ring->next = q_vector->rx.ring;
3712         q_vector->rx.ring = rx_ring;
3713         q_vector->rx.count++;
3714 }
3715
3716 /**
3717  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3718  * @vsi: the VSI being configured
3719  *
3720  * This function maps descriptor rings to the queue-specific vectors
3721  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3722  * one vector per queue pair, but on a constrained vector budget, we
3723  * group the queue pairs as "efficiently" as possible.
3724  **/
3725 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3726 {
3727         int qp_remaining = vsi->num_queue_pairs;
3728         int q_vectors = vsi->num_q_vectors;
3729         int num_ringpairs;
3730         int v_start = 0;
3731         int qp_idx = 0;
3732
3733         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3734          * group them so there are multiple queues per vector.
3735          * It is also important to go through all the vectors available to be
3736          * sure that if we don't use all the vectors, that the remaining vectors
3737          * are cleared. This is especially important when decreasing the
3738          * number of queues in use.
3739          */
3740         for (; v_start < q_vectors; v_start++) {
3741                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3742
3743                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3744
3745                 q_vector->num_ringpairs = num_ringpairs;
3746
3747                 q_vector->rx.count = 0;
3748                 q_vector->tx.count = 0;
3749                 q_vector->rx.ring = NULL;
3750                 q_vector->tx.ring = NULL;
3751
3752                 while (num_ringpairs--) {
3753                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3754                         qp_idx++;
3755                         qp_remaining--;
3756                 }
3757         }
3758 }
3759
3760 /**
3761  * i40e_vsi_request_irq - Request IRQ from the OS
3762  * @vsi: the VSI being configured
3763  * @basename: name for the vector
3764  **/
3765 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3766 {
3767         struct i40e_pf *pf = vsi->back;
3768         int err;
3769
3770         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3771                 err = i40e_vsi_request_irq_msix(vsi, basename);
3772         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3773                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3774                                   pf->int_name, pf);
3775         else
3776                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3777                                   pf->int_name, pf);
3778
3779         if (err)
3780                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3781
3782         return err;
3783 }
3784
3785 #ifdef CONFIG_NET_POLL_CONTROLLER
3786 /**
3787  * i40e_netpoll - A Polling 'interrupt' handler
3788  * @netdev: network interface device structure
3789  *
3790  * This is used by netconsole to send skbs without having to re-enable
3791  * interrupts.  It's not called while the normal interrupt routine is executing.
3792  **/
3793 #ifdef I40E_FCOE
3794 void i40e_netpoll(struct net_device *netdev)
3795 #else
3796 static void i40e_netpoll(struct net_device *netdev)
3797 #endif
3798 {
3799         struct i40e_netdev_priv *np = netdev_priv(netdev);
3800         struct i40e_vsi *vsi = np->vsi;
3801         struct i40e_pf *pf = vsi->back;
3802         int i;
3803
3804         /* if interface is down do nothing */
3805         if (test_bit(__I40E_DOWN, &vsi->state))
3806                 return;
3807
3808         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3809                 for (i = 0; i < vsi->num_q_vectors; i++)
3810                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3811         } else {
3812                 i40e_intr(pf->pdev->irq, netdev);
3813         }
3814 }
3815 #endif
3816
3817 /**
3818  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3819  * @pf: the PF being configured
3820  * @pf_q: the PF queue
3821  * @enable: enable or disable state of the queue
3822  *
3823  * This routine will wait for the given Tx queue of the PF to reach the
3824  * enabled or disabled state.
3825  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3826  * multiple retries; else will return 0 in case of success.
3827  **/
3828 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3829 {
3830         int i;
3831         u32 tx_reg;
3832
3833         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3834                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3835                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3836                         break;
3837
3838                 usleep_range(10, 20);
3839         }
3840         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3841                 return -ETIMEDOUT;
3842
3843         return 0;
3844 }
3845
3846 /**
3847  * i40e_vsi_control_tx - Start or stop a VSI's rings
3848  * @vsi: the VSI being configured
3849  * @enable: start or stop the rings
3850  **/
3851 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3852 {
3853         struct i40e_pf *pf = vsi->back;
3854         struct i40e_hw *hw = &pf->hw;
3855         int i, j, pf_q, ret = 0;
3856         u32 tx_reg;
3857
3858         pf_q = vsi->base_queue;
3859         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3860
3861                 /* warn the TX unit of coming changes */
3862                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3863                 if (!enable)
3864                         usleep_range(10, 20);
3865
3866                 for (j = 0; j < 50; j++) {
3867                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3868                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3869                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3870                                 break;
3871                         usleep_range(1000, 2000);
3872                 }
3873                 /* Skip if the queue is already in the requested state */
3874                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3875                         continue;
3876
3877                 /* turn on/off the queue */
3878                 if (enable) {
3879                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3880                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3881                 } else {
3882                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3883                 }
3884
3885                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3886                 /* No waiting for the Tx queue to disable */
3887                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3888                         continue;
3889
3890                 /* wait for the change to finish */
3891                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3892                 if (ret) {
3893                         dev_info(&pf->pdev->dev,
3894                                  "VSI seid %d Tx ring %d %sable timeout\n",
3895                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3896                         break;
3897                 }
3898         }
3899
3900         if (hw->revision_id == 0)
3901                 mdelay(50);
3902         return ret;
3903 }
3904
3905 /**
3906  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3907  * @pf: the PF being configured
3908  * @pf_q: the PF queue
3909  * @enable: enable or disable state of the queue
3910  *
3911  * This routine will wait for the given Rx queue of the PF to reach the
3912  * enabled or disabled state.
3913  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3914  * multiple retries; else will return 0 in case of success.
3915  **/
3916 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3917 {
3918         int i;
3919         u32 rx_reg;
3920
3921         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3922                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3923                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3924                         break;
3925
3926                 usleep_range(10, 20);
3927         }
3928         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3929                 return -ETIMEDOUT;
3930
3931         return 0;
3932 }
3933
3934 /**
3935  * i40e_vsi_control_rx - Start or stop a VSI's rings
3936  * @vsi: the VSI being configured
3937  * @enable: start or stop the rings
3938  **/
3939 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3940 {
3941         struct i40e_pf *pf = vsi->back;
3942         struct i40e_hw *hw = &pf->hw;
3943         int i, j, pf_q, ret = 0;
3944         u32 rx_reg;
3945
3946         pf_q = vsi->base_queue;
3947         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3948                 for (j = 0; j < 50; j++) {
3949                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3950                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3951                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3952                                 break;
3953                         usleep_range(1000, 2000);
3954                 }
3955
3956                 /* Skip if the queue is already in the requested state */
3957                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3958                         continue;
3959
3960                 /* turn on/off the queue */
3961                 if (enable)
3962                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3963                 else
3964                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3965                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3966                 /* No waiting for the Tx queue to disable */
3967                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3968                         continue;
3969
3970                 /* wait for the change to finish */
3971                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3972                 if (ret) {
3973                         dev_info(&pf->pdev->dev,
3974                                  "VSI seid %d Rx ring %d %sable timeout\n",
3975                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3976                         break;
3977                 }
3978         }
3979
3980         return ret;
3981 }
3982
3983 /**
3984  * i40e_vsi_control_rings - Start or stop a VSI's rings
3985  * @vsi: the VSI being configured
3986  * @enable: start or stop the rings
3987  **/
3988 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3989 {
3990         int ret = 0;
3991
3992         /* do rx first for enable and last for disable */
3993         if (request) {
3994                 ret = i40e_vsi_control_rx(vsi, request);
3995                 if (ret)
3996                         return ret;
3997                 ret = i40e_vsi_control_tx(vsi, request);
3998         } else {
3999                 /* Ignore return value, we need to shutdown whatever we can */
4000                 i40e_vsi_control_tx(vsi, request);
4001                 i40e_vsi_control_rx(vsi, request);
4002         }
4003
4004         return ret;
4005 }
4006
4007 /**
4008  * i40e_vsi_free_irq - Free the irq association with the OS
4009  * @vsi: the VSI being configured
4010  **/
4011 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
4012 {
4013         struct i40e_pf *pf = vsi->back;
4014         struct i40e_hw *hw = &pf->hw;
4015         int base = vsi->base_vector;
4016         u32 val, qp;
4017         int i;
4018
4019         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4020                 if (!vsi->q_vectors)
4021                         return;
4022
4023                 if (!vsi->irqs_ready)
4024                         return;
4025
4026                 vsi->irqs_ready = false;
4027                 for (i = 0; i < vsi->num_q_vectors; i++) {
4028                         u16 vector = i + base;
4029
4030                         /* free only the irqs that were actually requested */
4031                         if (!vsi->q_vectors[i] ||
4032                             !vsi->q_vectors[i]->num_ringpairs)
4033                                 continue;
4034
4035                         /* clear the affinity_mask in the IRQ descriptor */
4036                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
4037                                               NULL);
4038                         synchronize_irq(pf->msix_entries[vector].vector);
4039                         free_irq(pf->msix_entries[vector].vector,
4040                                  vsi->q_vectors[i]);
4041
4042                         /* Tear down the interrupt queue link list
4043                          *
4044                          * We know that they come in pairs and always
4045                          * the Rx first, then the Tx.  To clear the
4046                          * link list, stick the EOL value into the
4047                          * next_q field of the registers.
4048                          */
4049                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
4050                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4051                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4052                         val |= I40E_QUEUE_END_OF_LIST
4053                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4054                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
4055
4056                         while (qp != I40E_QUEUE_END_OF_LIST) {
4057                                 u32 next;
4058
4059                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4060
4061                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4062                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4063                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4064                                          I40E_QINT_RQCTL_INTEVENT_MASK);
4065
4066                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4067                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4068
4069                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4070
4071                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4072
4073                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
4074                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
4075
4076                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4077                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4078                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4079                                          I40E_QINT_TQCTL_INTEVENT_MASK);
4080
4081                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4082                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4083
4084                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4085                                 qp = next;
4086                         }
4087                 }
4088         } else {
4089                 free_irq(pf->pdev->irq, pf);
4090
4091                 val = rd32(hw, I40E_PFINT_LNKLST0);
4092                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4093                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4094                 val |= I40E_QUEUE_END_OF_LIST
4095                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
4096                 wr32(hw, I40E_PFINT_LNKLST0, val);
4097
4098                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4099                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4100                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4101                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4102                          I40E_QINT_RQCTL_INTEVENT_MASK);
4103
4104                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4105                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4106
4107                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4108
4109                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4110
4111                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4112                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4113                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4114                          I40E_QINT_TQCTL_INTEVENT_MASK);
4115
4116                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4117                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4118
4119                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4120         }
4121 }
4122
4123 /**
4124  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
4125  * @vsi: the VSI being configured
4126  * @v_idx: Index of vector to be freed
4127  *
4128  * This function frees the memory allocated to the q_vector.  In addition if
4129  * NAPI is enabled it will delete any references to the NAPI struct prior
4130  * to freeing the q_vector.
4131  **/
4132 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
4133 {
4134         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4135         struct i40e_ring *ring;
4136
4137         if (!q_vector)
4138                 return;
4139
4140         /* disassociate q_vector from rings */
4141         i40e_for_each_ring(ring, q_vector->tx)
4142                 ring->q_vector = NULL;
4143
4144         i40e_for_each_ring(ring, q_vector->rx)
4145                 ring->q_vector = NULL;
4146
4147         /* only VSI w/ an associated netdev is set up w/ NAPI */
4148         if (vsi->netdev)
4149                 netif_napi_del(&q_vector->napi);
4150
4151         vsi->q_vectors[v_idx] = NULL;
4152
4153         kfree_rcu(q_vector, rcu);
4154 }
4155
4156 /**
4157  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
4158  * @vsi: the VSI being un-configured
4159  *
4160  * This frees the memory allocated to the q_vectors and
4161  * deletes references to the NAPI struct.
4162  **/
4163 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
4164 {
4165         int v_idx;
4166
4167         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
4168                 i40e_free_q_vector(vsi, v_idx);
4169 }
4170
4171 /**
4172  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
4173  * @pf: board private structure
4174  **/
4175 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
4176 {
4177         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
4178         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4179                 pci_disable_msix(pf->pdev);
4180                 kfree(pf->msix_entries);
4181                 pf->msix_entries = NULL;
4182                 kfree(pf->irq_pile);
4183                 pf->irq_pile = NULL;
4184         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
4185                 pci_disable_msi(pf->pdev);
4186         }
4187         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
4188 }
4189
4190 /**
4191  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
4192  * @pf: board private structure
4193  *
4194  * We go through and clear interrupt specific resources and reset the structure
4195  * to pre-load conditions
4196  **/
4197 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
4198 {
4199         int i;
4200
4201         i40e_stop_misc_vector(pf);
4202         if (pf->flags & I40E_FLAG_MSIX_ENABLED && pf->msix_entries) {
4203                 synchronize_irq(pf->msix_entries[0].vector);
4204                 free_irq(pf->msix_entries[0].vector, pf);
4205         }
4206
4207         i40e_put_lump(pf->irq_pile, pf->iwarp_base_vector,
4208                       I40E_IWARP_IRQ_PILE_ID);
4209
4210         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
4211         for (i = 0; i < pf->num_alloc_vsi; i++)
4212                 if (pf->vsi[i])
4213                         i40e_vsi_free_q_vectors(pf->vsi[i]);
4214         i40e_reset_interrupt_capability(pf);
4215 }
4216
4217 /**
4218  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4219  * @vsi: the VSI being configured
4220  **/
4221 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4222 {
4223         int q_idx;
4224
4225         if (!vsi->netdev)
4226                 return;
4227
4228         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++) {
4229                 struct i40e_q_vector *q_vector = vsi->q_vectors[q_idx];
4230
4231                 if (q_vector->rx.ring || q_vector->tx.ring)
4232                         napi_enable(&q_vector->napi);
4233         }
4234 }
4235
4236 /**
4237  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4238  * @vsi: the VSI being configured
4239  **/
4240 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4241 {
4242         int q_idx;
4243
4244         if (!vsi->netdev)
4245                 return;
4246
4247         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++) {
4248                 struct i40e_q_vector *q_vector = vsi->q_vectors[q_idx];
4249
4250                 if (q_vector->rx.ring || q_vector->tx.ring)
4251                         napi_disable(&q_vector->napi);
4252         }
4253 }
4254
4255 /**
4256  * i40e_vsi_close - Shut down a VSI
4257  * @vsi: the vsi to be quelled
4258  **/
4259 static void i40e_vsi_close(struct i40e_vsi *vsi)
4260 {
4261         bool reset = false;
4262
4263         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4264                 i40e_down(vsi);
4265         i40e_vsi_free_irq(vsi);
4266         i40e_vsi_free_tx_resources(vsi);
4267         i40e_vsi_free_rx_resources(vsi);
4268         vsi->current_netdev_flags = 0;
4269         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4270                 reset = true;
4271         i40e_notify_client_of_netdev_close(vsi, reset);
4272 }
4273
4274 /**
4275  * i40e_quiesce_vsi - Pause a given VSI
4276  * @vsi: the VSI being paused
4277  **/
4278 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4279 {
4280         if (test_bit(__I40E_DOWN, &vsi->state))
4281                 return;
4282
4283         /* No need to disable FCoE VSI when Tx suspended */
4284         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4285             vsi->type == I40E_VSI_FCOE) {
4286                 dev_dbg(&vsi->back->pdev->dev,
4287                          "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4288                 return;
4289         }
4290
4291         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4292         if (vsi->netdev && netif_running(vsi->netdev))
4293                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4294         else
4295                 i40e_vsi_close(vsi);
4296 }
4297
4298 /**
4299  * i40e_unquiesce_vsi - Resume a given VSI
4300  * @vsi: the VSI being resumed
4301  **/
4302 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4303 {
4304         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4305                 return;
4306
4307         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4308         if (vsi->netdev && netif_running(vsi->netdev))
4309                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4310         else
4311                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4312 }
4313
4314 /**
4315  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4316  * @pf: the PF
4317  **/
4318 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4319 {
4320         int v;
4321
4322         for (v = 0; v < pf->num_alloc_vsi; v++) {
4323                 if (pf->vsi[v])
4324                         i40e_quiesce_vsi(pf->vsi[v]);
4325         }
4326 }
4327
4328 /**
4329  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4330  * @pf: the PF
4331  **/
4332 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4333 {
4334         int v;
4335
4336         for (v = 0; v < pf->num_alloc_vsi; v++) {
4337                 if (pf->vsi[v])
4338                         i40e_unquiesce_vsi(pf->vsi[v]);
4339         }
4340 }
4341
4342 #ifdef CONFIG_I40E_DCB
4343 /**
4344  * i40e_vsi_wait_queues_disabled - Wait for VSI's queues to be disabled
4345  * @vsi: the VSI being configured
4346  *
4347  * This function waits for the given VSI's queues to be disabled.
4348  **/
4349 static int i40e_vsi_wait_queues_disabled(struct i40e_vsi *vsi)
4350 {
4351         struct i40e_pf *pf = vsi->back;
4352         int i, pf_q, ret;
4353
4354         pf_q = vsi->base_queue;
4355         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4356                 /* Check and wait for the disable status of the queue */
4357                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4358                 if (ret) {
4359                         dev_info(&pf->pdev->dev,
4360                                  "VSI seid %d Tx ring %d disable timeout\n",
4361                                  vsi->seid, pf_q);
4362                         return ret;
4363                 }
4364         }
4365
4366         pf_q = vsi->base_queue;
4367         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4368                 /* Check and wait for the disable status of the queue */
4369                 ret = i40e_pf_rxq_wait(pf, pf_q, false);
4370                 if (ret) {
4371                         dev_info(&pf->pdev->dev,
4372                                  "VSI seid %d Rx ring %d disable timeout\n",
4373                                  vsi->seid, pf_q);
4374                         return ret;
4375                 }
4376         }
4377
4378         return 0;
4379 }
4380
4381 /**
4382  * i40e_pf_wait_queues_disabled - Wait for all queues of PF VSIs to be disabled
4383  * @pf: the PF
4384  *
4385  * This function waits for the queues to be in disabled state for all the
4386  * VSIs that are managed by this PF.
4387  **/
4388 static int i40e_pf_wait_queues_disabled(struct i40e_pf *pf)
4389 {
4390         int v, ret = 0;
4391
4392         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4393                 /* No need to wait for FCoE VSI queues */
4394                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4395                         ret = i40e_vsi_wait_queues_disabled(pf->vsi[v]);
4396                         if (ret)
4397                                 break;
4398                 }
4399         }
4400
4401         return ret;
4402 }
4403
4404 #endif
4405
4406 /**
4407  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4408  * @q_idx: TX queue number
4409  * @vsi: Pointer to VSI struct
4410  *
4411  * This function checks specified queue for given VSI. Detects hung condition.
4412  * Sets hung bit since it is two step process. Before next run of service task
4413  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4414  * hung condition remain unchanged and during subsequent run, this function
4415  * issues SW interrupt to recover from hung condition.
4416  **/
4417 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4418 {
4419         struct i40e_ring *tx_ring = NULL;
4420         struct i40e_pf  *pf;
4421         u32 head, val, tx_pending_hw;
4422         int i;
4423
4424         pf = vsi->back;
4425
4426         /* now that we have an index, find the tx_ring struct */
4427         for (i = 0; i < vsi->num_queue_pairs; i++) {
4428                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4429                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4430                                 tx_ring = vsi->tx_rings[i];
4431                                 break;
4432                         }
4433                 }
4434         }
4435
4436         if (!tx_ring)
4437                 return;
4438
4439         /* Read interrupt register */
4440         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4441                 val = rd32(&pf->hw,
4442                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4443                                                tx_ring->vsi->base_vector - 1));
4444         else
4445                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4446
4447         head = i40e_get_head(tx_ring);
4448
4449         tx_pending_hw = i40e_get_tx_pending(tx_ring, false);
4450
4451         /* HW is done executing descriptors, updated HEAD write back,
4452          * but SW hasn't processed those descriptors. If interrupt is
4453          * not generated from this point ON, it could result into
4454          * dev_watchdog detecting timeout on those netdev_queue,
4455          * hence proactively trigger SW interrupt.
4456          */
4457         if (tx_pending_hw && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))) {
4458                 /* NAPI Poll didn't run and clear since it was set */
4459                 if (test_and_clear_bit(I40E_Q_VECTOR_HUNG_DETECT,
4460                                        &tx_ring->q_vector->hung_detected)) {
4461                         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",
4462                                     vsi->seid, q_idx, tx_pending_hw,
4463                                     tx_ring->next_to_clean, head,
4464                                     tx_ring->next_to_use,
4465                                     readl(tx_ring->tail));
4466                         netdev_info(vsi->netdev, "VSI_seid %d, Issuing force_wb for TX queue %d, Interrupt Reg: 0x%x\n",
4467                                     vsi->seid, q_idx, val);
4468                         i40e_force_wb(vsi, tx_ring->q_vector);
4469                 } else {
4470                         /* First Chance - detected possible hung */
4471                         set_bit(I40E_Q_VECTOR_HUNG_DETECT,
4472                                 &tx_ring->q_vector->hung_detected);
4473                 }
4474         }
4475
4476         /* This is the case where we have interrupts missing,
4477          * so the tx_pending in HW will most likely be 0, but we
4478          * will have tx_pending in SW since the WB happened but the
4479          * interrupt got lost.
4480          */
4481         if ((!tx_pending_hw) && i40e_get_tx_pending(tx_ring, true) &&
4482             (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))) {
4483                 if (napi_reschedule(&tx_ring->q_vector->napi))
4484                         tx_ring->tx_stats.tx_lost_interrupt++;
4485         }
4486 }
4487
4488 /**
4489  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4490  * @pf:  pointer to PF struct
4491  *
4492  * LAN VSI has netdev and netdev has TX queues. This function is to check
4493  * each of those TX queues if they are hung, trigger recovery by issuing
4494  * SW interrupt.
4495  **/
4496 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4497 {
4498         struct net_device *netdev;
4499         struct i40e_vsi *vsi;
4500         int i;
4501
4502         /* Only for LAN VSI */
4503         vsi = pf->vsi[pf->lan_vsi];
4504
4505         if (!vsi)
4506                 return;
4507
4508         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4509         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4510             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4511                 return;
4512
4513         /* Make sure type is MAIN VSI */
4514         if (vsi->type != I40E_VSI_MAIN)
4515                 return;
4516
4517         netdev = vsi->netdev;
4518         if (!netdev)
4519                 return;
4520
4521         /* Bail out if netif_carrier is not OK */
4522         if (!netif_carrier_ok(netdev))
4523                 return;
4524
4525         /* Go thru' TX queues for netdev */
4526         for (i = 0; i < netdev->num_tx_queues; i++) {
4527                 struct netdev_queue *q;
4528
4529                 q = netdev_get_tx_queue(netdev, i);
4530                 if (q)
4531                         i40e_detect_recover_hung_queue(i, vsi);
4532         }
4533 }
4534
4535 /**
4536  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4537  * @pf: pointer to PF
4538  *
4539  * Get TC map for ISCSI PF type that will include iSCSI TC
4540  * and LAN TC.
4541  **/
4542 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4543 {
4544         struct i40e_dcb_app_priority_table app;
4545         struct i40e_hw *hw = &pf->hw;
4546         u8 enabled_tc = 1; /* TC0 is always enabled */
4547         u8 tc, i;
4548         /* Get the iSCSI APP TLV */
4549         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4550
4551         for (i = 0; i < dcbcfg->numapps; i++) {
4552                 app = dcbcfg->app[i];
4553                 if (app.selector == I40E_APP_SEL_TCPIP &&
4554                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4555                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4556                         enabled_tc |= BIT(tc);
4557                         break;
4558                 }
4559         }
4560
4561         return enabled_tc;
4562 }
4563
4564 /**
4565  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4566  * @dcbcfg: the corresponding DCBx configuration structure
4567  *
4568  * Return the number of TCs from given DCBx configuration
4569  **/
4570 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4571 {
4572         int i, tc_unused = 0;
4573         u8 num_tc = 0;
4574         u8 ret = 0;
4575
4576         /* Scan the ETS Config Priority Table to find
4577          * traffic class enabled for a given priority
4578          * and create a bitmask of enabled TCs
4579          */
4580         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++)
4581                 num_tc |= BIT(dcbcfg->etscfg.prioritytable[i]);
4582
4583         /* Now scan the bitmask to check for
4584          * contiguous TCs starting with TC0
4585          */
4586         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4587                 if (num_tc & BIT(i)) {
4588                         if (!tc_unused) {
4589                                 ret++;
4590                         } else {
4591                                 pr_err("Non-contiguous TC - Disabling DCB\n");
4592                                 return 1;
4593                         }
4594                 } else {
4595                         tc_unused = 1;
4596                 }
4597         }
4598
4599         /* There is always at least TC0 */
4600         if (!ret)
4601                 ret = 1;
4602
4603         return ret;
4604 }
4605
4606 /**
4607  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4608  * @dcbcfg: the corresponding DCBx configuration structure
4609  *
4610  * Query the current DCB configuration and return the number of
4611  * traffic classes enabled from the given DCBX config
4612  **/
4613 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4614 {
4615         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4616         u8 enabled_tc = 1;
4617         u8 i;
4618
4619         for (i = 0; i < num_tc; i++)
4620                 enabled_tc |= BIT(i);
4621
4622         return enabled_tc;
4623 }
4624
4625 /**
4626  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4627  * @pf: PF being queried
4628  *
4629  * Return number of traffic classes enabled for the given PF
4630  **/
4631 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4632 {
4633         struct i40e_hw *hw = &pf->hw;
4634         u8 i, enabled_tc = 1;
4635         u8 num_tc = 0;
4636         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4637
4638         /* If DCB is not enabled then always in single TC */
4639         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4640                 return 1;
4641
4642         /* SFP mode will be enabled for all TCs on port */
4643         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4644                 return i40e_dcb_get_num_tc(dcbcfg);
4645
4646         /* MFP mode return count of enabled TCs for this PF */
4647         if (pf->hw.func_caps.iscsi)
4648                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4649         else
4650                 return 1; /* Only TC0 */
4651
4652         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4653                 if (enabled_tc & BIT(i))
4654                         num_tc++;
4655         }
4656         return num_tc;
4657 }
4658
4659 /**
4660  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4661  * @pf: PF being queried
4662  *
4663  * Return a bitmap for enabled traffic classes for this PF.
4664  **/
4665 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4666 {
4667         /* If DCB is not enabled for this PF then just return default TC */
4668         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4669                 return I40E_DEFAULT_TRAFFIC_CLASS;
4670
4671         /* SFP mode we want PF to be enabled for all TCs */
4672         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4673                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4674
4675         /* MFP enabled and iSCSI PF type */
4676         if (pf->hw.func_caps.iscsi)
4677                 return i40e_get_iscsi_tc_map(pf);
4678         else
4679                 return I40E_DEFAULT_TRAFFIC_CLASS;
4680 }
4681
4682 /**
4683  * i40e_vsi_get_bw_info - Query VSI BW Information
4684  * @vsi: the VSI being queried
4685  *
4686  * Returns 0 on success, negative value on failure
4687  **/
4688 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4689 {
4690         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4691         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4692         struct i40e_pf *pf = vsi->back;
4693         struct i40e_hw *hw = &pf->hw;
4694         i40e_status ret;
4695         u32 tc_bw_max;
4696         int i;
4697
4698         /* Get the VSI level BW configuration */
4699         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4700         if (ret) {
4701                 dev_info(&pf->pdev->dev,
4702                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4703                          i40e_stat_str(&pf->hw, ret),
4704                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4705                 return -EINVAL;
4706         }
4707
4708         /* Get the VSI level BW configuration per TC */
4709         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4710                                                NULL);
4711         if (ret) {
4712                 dev_info(&pf->pdev->dev,
4713                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4714                          i40e_stat_str(&pf->hw, ret),
4715                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4716                 return -EINVAL;
4717         }
4718
4719         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4720                 dev_info(&pf->pdev->dev,
4721                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4722                          bw_config.tc_valid_bits,
4723                          bw_ets_config.tc_valid_bits);
4724                 /* Still continuing */
4725         }
4726
4727         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4728         vsi->bw_max_quanta = bw_config.max_bw;
4729         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4730                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4731         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4732                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4733                 vsi->bw_ets_limit_credits[i] =
4734                                         le16_to_cpu(bw_ets_config.credits[i]);
4735                 /* 3 bits out of 4 for each TC */
4736                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4737         }
4738
4739         return 0;
4740 }
4741
4742 /**
4743  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4744  * @vsi: the VSI being configured
4745  * @enabled_tc: TC bitmap
4746  * @bw_credits: BW shared credits per TC
4747  *
4748  * Returns 0 on success, negative value on failure
4749  **/
4750 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4751                                        u8 *bw_share)
4752 {
4753         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4754         i40e_status ret;
4755         int i;
4756
4757         bw_data.tc_valid_bits = enabled_tc;
4758         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4759                 bw_data.tc_bw_credits[i] = bw_share[i];
4760
4761         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4762                                        NULL);
4763         if (ret) {
4764                 dev_info(&vsi->back->pdev->dev,
4765                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4766                          vsi->back->hw.aq.asq_last_status);
4767                 return -EINVAL;
4768         }
4769
4770         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4771                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4772
4773         return 0;
4774 }
4775
4776 /**
4777  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4778  * @vsi: the VSI being configured
4779  * @enabled_tc: TC map to be enabled
4780  *
4781  **/
4782 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4783 {
4784         struct net_device *netdev = vsi->netdev;
4785         struct i40e_pf *pf = vsi->back;
4786         struct i40e_hw *hw = &pf->hw;
4787         u8 netdev_tc = 0;
4788         int i;
4789         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4790
4791         if (!netdev)
4792                 return;
4793
4794         if (!enabled_tc) {
4795                 netdev_reset_tc(netdev);
4796                 return;
4797         }
4798
4799         /* Set up actual enabled TCs on the VSI */
4800         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4801                 return;
4802
4803         /* set per TC queues for the VSI */
4804         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4805                 /* Only set TC queues for enabled tcs
4806                  *
4807                  * e.g. For a VSI that has TC0 and TC3 enabled the
4808                  * enabled_tc bitmap would be 0x00001001; the driver
4809                  * will set the numtc for netdev as 2 that will be
4810                  * referenced by the netdev layer as TC 0 and 1.
4811                  */
4812                 if (vsi->tc_config.enabled_tc & BIT(i))
4813                         netdev_set_tc_queue(netdev,
4814                                         vsi->tc_config.tc_info[i].netdev_tc,
4815                                         vsi->tc_config.tc_info[i].qcount,
4816                                         vsi->tc_config.tc_info[i].qoffset);
4817         }
4818
4819         /* Assign UP2TC map for the VSI */
4820         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4821                 /* Get the actual TC# for the UP */
4822                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4823                 /* Get the mapped netdev TC# for the UP */
4824                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4825                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4826         }
4827 }
4828
4829 /**
4830  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4831  * @vsi: the VSI being configured
4832  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4833  **/
4834 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4835                                       struct i40e_vsi_context *ctxt)
4836 {
4837         /* copy just the sections touched not the entire info
4838          * since not all sections are valid as returned by
4839          * update vsi params
4840          */
4841         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4842         memcpy(&vsi->info.queue_mapping,
4843                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4844         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4845                sizeof(vsi->info.tc_mapping));
4846 }
4847
4848 /**
4849  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4850  * @vsi: VSI to be configured
4851  * @enabled_tc: TC bitmap
4852  *
4853  * This configures a particular VSI for TCs that are mapped to the
4854  * given TC bitmap. It uses default bandwidth share for TCs across
4855  * VSIs to configure TC for a particular VSI.
4856  *
4857  * NOTE:
4858  * It is expected that the VSI queues have been quisced before calling
4859  * this function.
4860  **/
4861 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4862 {
4863         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4864         struct i40e_vsi_context ctxt;
4865         int ret = 0;
4866         int i;
4867
4868         /* Check if enabled_tc is same as existing or new TCs */
4869         if (vsi->tc_config.enabled_tc == enabled_tc)
4870                 return ret;
4871
4872         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4873         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4874                 if (enabled_tc & BIT(i))
4875                         bw_share[i] = 1;
4876         }
4877
4878         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4879         if (ret) {
4880                 dev_info(&vsi->back->pdev->dev,
4881                          "Failed configuring TC map %d for VSI %d\n",
4882                          enabled_tc, vsi->seid);
4883                 goto out;
4884         }
4885
4886         /* Update Queue Pairs Mapping for currently enabled UPs */
4887         ctxt.seid = vsi->seid;
4888         ctxt.pf_num = vsi->back->hw.pf_id;
4889         ctxt.vf_num = 0;
4890         ctxt.uplink_seid = vsi->uplink_seid;
4891         ctxt.info = vsi->info;
4892         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4893
4894         if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
4895                 ctxt.info.valid_sections |=
4896                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
4897                 ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA;
4898         }
4899
4900         /* Update the VSI after updating the VSI queue-mapping information */
4901         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4902         if (ret) {
4903                 dev_info(&vsi->back->pdev->dev,
4904                          "Update vsi tc config failed, err %s aq_err %s\n",
4905                          i40e_stat_str(&vsi->back->hw, ret),
4906                          i40e_aq_str(&vsi->back->hw,
4907                                      vsi->back->hw.aq.asq_last_status));
4908                 goto out;
4909         }
4910         /* update the local VSI info with updated queue map */
4911         i40e_vsi_update_queue_map(vsi, &ctxt);
4912         vsi->info.valid_sections = 0;
4913
4914         /* Update current VSI BW information */
4915         ret = i40e_vsi_get_bw_info(vsi);
4916         if (ret) {
4917                 dev_info(&vsi->back->pdev->dev,
4918                          "Failed updating vsi bw info, err %s aq_err %s\n",
4919                          i40e_stat_str(&vsi->back->hw, ret),
4920                          i40e_aq_str(&vsi->back->hw,
4921                                      vsi->back->hw.aq.asq_last_status));
4922                 goto out;
4923         }
4924
4925         /* Update the netdev TC setup */
4926         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4927 out:
4928         return ret;
4929 }
4930
4931 /**
4932  * i40e_veb_config_tc - Configure TCs for given VEB
4933  * @veb: given VEB
4934  * @enabled_tc: TC bitmap
4935  *
4936  * Configures given TC bitmap for VEB (switching) element
4937  **/
4938 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4939 {
4940         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4941         struct i40e_pf *pf = veb->pf;
4942         int ret = 0;
4943         int i;
4944
4945         /* No TCs or already enabled TCs just return */
4946         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4947                 return ret;
4948
4949         bw_data.tc_valid_bits = enabled_tc;
4950         /* bw_data.absolute_credits is not set (relative) */
4951
4952         /* Enable ETS TCs with equal BW Share for now */
4953         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4954                 if (enabled_tc & BIT(i))
4955                         bw_data.tc_bw_share_credits[i] = 1;
4956         }
4957
4958         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4959                                                    &bw_data, NULL);
4960         if (ret) {
4961                 dev_info(&pf->pdev->dev,
4962                          "VEB bw config failed, err %s aq_err %s\n",
4963                          i40e_stat_str(&pf->hw, ret),
4964                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4965                 goto out;
4966         }
4967
4968         /* Update the BW information */
4969         ret = i40e_veb_get_bw_info(veb);
4970         if (ret) {
4971                 dev_info(&pf->pdev->dev,
4972                          "Failed getting veb bw config, err %s aq_err %s\n",
4973                          i40e_stat_str(&pf->hw, ret),
4974                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4975         }
4976
4977 out:
4978         return ret;
4979 }
4980
4981 #ifdef CONFIG_I40E_DCB
4982 /**
4983  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4984  * @pf: PF struct
4985  *
4986  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4987  * the caller would've quiesce all the VSIs before calling
4988  * this function
4989  **/
4990 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4991 {
4992         u8 tc_map = 0;
4993         int ret;
4994         u8 v;
4995
4996         /* Enable the TCs available on PF to all VEBs */
4997         tc_map = i40e_pf_get_tc_map(pf);
4998         for (v = 0; v < I40E_MAX_VEB; v++) {
4999                 if (!pf->veb[v])
5000                         continue;
5001                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
5002                 if (ret) {
5003                         dev_info(&pf->pdev->dev,
5004                                  "Failed configuring TC for VEB seid=%d\n",
5005                                  pf->veb[v]->seid);
5006                         /* Will try to configure as many components */
5007                 }
5008         }
5009
5010         /* Update each VSI */
5011         for (v = 0; v < pf->num_alloc_vsi; v++) {
5012                 if (!pf->vsi[v])
5013                         continue;
5014
5015                 /* - Enable all TCs for the LAN VSI
5016 #ifdef I40E_FCOE
5017                  * - For FCoE VSI only enable the TC configured
5018                  *   as per the APP TLV
5019 #endif
5020                  * - For all others keep them at TC0 for now
5021                  */
5022                 if (v == pf->lan_vsi)
5023                         tc_map = i40e_pf_get_tc_map(pf);
5024                 else
5025                         tc_map = I40E_DEFAULT_TRAFFIC_CLASS;
5026 #ifdef I40E_FCOE
5027                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
5028                         tc_map = i40e_get_fcoe_tc_map(pf);
5029 #endif /* #ifdef I40E_FCOE */
5030
5031                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
5032                 if (ret) {
5033                         dev_info(&pf->pdev->dev,
5034                                  "Failed configuring TC for VSI seid=%d\n",
5035                                  pf->vsi[v]->seid);
5036                         /* Will try to configure as many components */
5037                 } else {
5038                         /* Re-configure VSI vectors based on updated TC map */
5039                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
5040                         if (pf->vsi[v]->netdev)
5041                                 i40e_dcbnl_set_all(pf->vsi[v]);
5042                 }
5043         }
5044 }
5045
5046 /**
5047  * i40e_resume_port_tx - Resume port Tx
5048  * @pf: PF struct
5049  *
5050  * Resume a port's Tx and issue a PF reset in case of failure to
5051  * resume.
5052  **/
5053 static int i40e_resume_port_tx(struct i40e_pf *pf)
5054 {
5055         struct i40e_hw *hw = &pf->hw;
5056         int ret;
5057
5058         ret = i40e_aq_resume_port_tx(hw, NULL);
5059         if (ret) {
5060                 dev_info(&pf->pdev->dev,
5061                          "Resume Port Tx failed, err %s aq_err %s\n",
5062                           i40e_stat_str(&pf->hw, ret),
5063                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5064                 /* Schedule PF reset to recover */
5065                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5066                 i40e_service_event_schedule(pf);
5067         }
5068
5069         return ret;
5070 }
5071
5072 /**
5073  * i40e_init_pf_dcb - Initialize DCB configuration
5074  * @pf: PF being configured
5075  *
5076  * Query the current DCB configuration and cache it
5077  * in the hardware structure
5078  **/
5079 static int i40e_init_pf_dcb(struct i40e_pf *pf)
5080 {
5081         struct i40e_hw *hw = &pf->hw;
5082         int err = 0;
5083
5084         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
5085         if (pf->flags & I40E_FLAG_NO_DCB_SUPPORT)
5086                 goto out;
5087
5088         /* Get the initial DCB configuration */
5089         err = i40e_init_dcb(hw);
5090         if (!err) {
5091                 /* Device/Function is not DCBX capable */
5092                 if ((!hw->func_caps.dcb) ||
5093                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
5094                         dev_info(&pf->pdev->dev,
5095                                  "DCBX offload is not supported or is disabled for this PF.\n");
5096
5097                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
5098                                 goto out;
5099
5100                 } else {
5101                         /* When status is not DISABLED then DCBX in FW */
5102                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
5103                                        DCB_CAP_DCBX_VER_IEEE;
5104
5105                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
5106                         /* Enable DCB tagging only when more than one TC
5107                          * or explicitly disable if only one TC
5108                          */
5109                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5110                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5111                         else
5112                                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5113                         dev_dbg(&pf->pdev->dev,
5114                                 "DCBX offload is supported for this PF.\n");
5115                 }
5116         } else {
5117                 dev_info(&pf->pdev->dev,
5118                          "Query for DCB configuration failed, err %s aq_err %s\n",
5119                          i40e_stat_str(&pf->hw, err),
5120                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5121         }
5122
5123 out:
5124         return err;
5125 }
5126 #endif /* CONFIG_I40E_DCB */
5127 #define SPEED_SIZE 14
5128 #define FC_SIZE 8
5129 /**
5130  * i40e_print_link_message - print link up or down
5131  * @vsi: the VSI for which link needs a message
5132  */
5133 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
5134 {
5135         char *speed = "Unknown";
5136         char *fc = "Unknown";
5137
5138         if (vsi->current_isup == isup)
5139                 return;
5140         vsi->current_isup = isup;
5141         if (!isup) {
5142                 netdev_info(vsi->netdev, "NIC Link is Down\n");
5143                 return;
5144         }
5145
5146         /* Warn user if link speed on NPAR enabled partition is not at
5147          * least 10GB
5148          */
5149         if (vsi->back->hw.func_caps.npar_enable &&
5150             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
5151              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
5152                 netdev_warn(vsi->netdev,
5153                             "The partition detected link speed that is less than 10Gbps\n");
5154
5155         switch (vsi->back->hw.phy.link_info.link_speed) {
5156         case I40E_LINK_SPEED_40GB:
5157                 speed = "40 G";
5158                 break;
5159         case I40E_LINK_SPEED_20GB:
5160                 speed = "20 G";
5161                 break;
5162         case I40E_LINK_SPEED_10GB:
5163                 speed = "10 G";
5164                 break;
5165         case I40E_LINK_SPEED_1GB:
5166                 speed = "1000 M";
5167                 break;
5168         case I40E_LINK_SPEED_100MB:
5169                 speed = "100 M";
5170                 break;
5171         default:
5172                 break;
5173         }
5174
5175         switch (vsi->back->hw.fc.current_mode) {
5176         case I40E_FC_FULL:
5177                 fc = "RX/TX";
5178                 break;
5179         case I40E_FC_TX_PAUSE:
5180                 fc = "TX";
5181                 break;
5182         case I40E_FC_RX_PAUSE:
5183                 fc = "RX";
5184                 break;
5185         default:
5186                 fc = "None";
5187                 break;
5188         }
5189
5190         netdev_info(vsi->netdev, "NIC Link is Up %sbps Full Duplex, Flow Control: %s\n",
5191                     speed, fc);
5192 }
5193
5194 /**
5195  * i40e_up_complete - Finish the last steps of bringing up a connection
5196  * @vsi: the VSI being configured
5197  **/
5198 static int i40e_up_complete(struct i40e_vsi *vsi)
5199 {
5200         struct i40e_pf *pf = vsi->back;
5201         int err;
5202
5203         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5204                 i40e_vsi_configure_msix(vsi);
5205         else
5206                 i40e_configure_msi_and_legacy(vsi);
5207
5208         /* start rings */
5209         err = i40e_vsi_control_rings(vsi, true);
5210         if (err)
5211                 return err;
5212
5213         clear_bit(__I40E_DOWN, &vsi->state);
5214         i40e_napi_enable_all(vsi);
5215         i40e_vsi_enable_irq(vsi);
5216
5217         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
5218             (vsi->netdev)) {
5219                 i40e_print_link_message(vsi, true);
5220                 netif_tx_start_all_queues(vsi->netdev);
5221                 netif_carrier_on(vsi->netdev);
5222         } else if (vsi->netdev) {
5223                 i40e_print_link_message(vsi, false);
5224                 /* need to check for qualified module here*/
5225                 if ((pf->hw.phy.link_info.link_info &
5226                         I40E_AQ_MEDIA_AVAILABLE) &&
5227                     (!(pf->hw.phy.link_info.an_info &
5228                         I40E_AQ_QUALIFIED_MODULE)))
5229                         netdev_err(vsi->netdev,
5230                                    "the driver failed to link because an unqualified module was detected.");
5231         }
5232
5233         /* replay FDIR SB filters */
5234         if (vsi->type == I40E_VSI_FDIR) {
5235                 /* reset fd counters */
5236                 pf->fd_add_err = pf->fd_atr_cnt = 0;
5237                 if (pf->fd_tcp_rule > 0) {
5238                         pf->auto_disable_flags |= I40E_FLAG_FD_ATR_ENABLED;
5239                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5240                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
5241                         pf->fd_tcp_rule = 0;
5242                 }
5243                 i40e_fdir_filter_restore(vsi);
5244         }
5245
5246         /* On the next run of the service_task, notify any clients of the new
5247          * opened netdev
5248          */
5249         pf->flags |= I40E_FLAG_SERVICE_CLIENT_REQUESTED;
5250         i40e_service_event_schedule(pf);
5251
5252         return 0;
5253 }
5254
5255 /**
5256  * i40e_vsi_reinit_locked - Reset the VSI
5257  * @vsi: the VSI being configured
5258  *
5259  * Rebuild the ring structs after some configuration
5260  * has changed, e.g. MTU size.
5261  **/
5262 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
5263 {
5264         struct i40e_pf *pf = vsi->back;
5265
5266         WARN_ON(in_interrupt());
5267         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
5268                 usleep_range(1000, 2000);
5269         i40e_down(vsi);
5270
5271         i40e_up(vsi);
5272         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
5273 }
5274
5275 /**
5276  * i40e_up - Bring the connection back up after being down
5277  * @vsi: the VSI being configured
5278  **/
5279 int i40e_up(struct i40e_vsi *vsi)
5280 {
5281         int err;
5282
5283         err = i40e_vsi_configure(vsi);
5284         if (!err)
5285                 err = i40e_up_complete(vsi);
5286
5287         return err;
5288 }
5289
5290 /**
5291  * i40e_down - Shutdown the connection processing
5292  * @vsi: the VSI being stopped
5293  **/
5294 void i40e_down(struct i40e_vsi *vsi)
5295 {
5296         int i;
5297
5298         /* It is assumed that the caller of this function
5299          * sets the vsi->state __I40E_DOWN bit.
5300          */
5301         if (vsi->netdev) {
5302                 netif_carrier_off(vsi->netdev);
5303                 netif_tx_disable(vsi->netdev);
5304         }
5305         i40e_vsi_disable_irq(vsi);
5306         i40e_vsi_control_rings(vsi, false);
5307         i40e_napi_disable_all(vsi);
5308
5309         for (i = 0; i < vsi->num_queue_pairs; i++) {
5310                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5311                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5312         }
5313
5314         i40e_notify_client_of_netdev_close(vsi, false);
5315
5316 }
5317
5318 /**
5319  * i40e_setup_tc - configure multiple traffic classes
5320  * @netdev: net device to configure
5321  * @tc: number of traffic classes to enable
5322  **/
5323 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5324 {
5325         struct i40e_netdev_priv *np = netdev_priv(netdev);
5326         struct i40e_vsi *vsi = np->vsi;
5327         struct i40e_pf *pf = vsi->back;
5328         u8 enabled_tc = 0;
5329         int ret = -EINVAL;
5330         int i;
5331
5332         /* Check if DCB enabled to continue */
5333         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5334                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5335                 goto exit;
5336         }
5337
5338         /* Check if MFP enabled */
5339         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5340                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5341                 goto exit;
5342         }
5343
5344         /* Check whether tc count is within enabled limit */
5345         if (tc > i40e_pf_get_num_tc(pf)) {
5346                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5347                 goto exit;
5348         }
5349
5350         /* Generate TC map for number of tc requested */
5351         for (i = 0; i < tc; i++)
5352                 enabled_tc |= BIT(i);
5353
5354         /* Requesting same TC configuration as already enabled */
5355         if (enabled_tc == vsi->tc_config.enabled_tc)
5356                 return 0;
5357
5358         /* Quiesce VSI queues */
5359         i40e_quiesce_vsi(vsi);
5360
5361         /* Configure VSI for enabled TCs */
5362         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5363         if (ret) {
5364                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5365                             vsi->seid);
5366                 goto exit;
5367         }
5368
5369         /* Unquiesce VSI */
5370         i40e_unquiesce_vsi(vsi);
5371
5372 exit:
5373         return ret;
5374 }
5375
5376 #ifdef I40E_FCOE
5377 int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5378                     struct tc_to_netdev *tc)
5379 #else
5380 static int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5381                            struct tc_to_netdev *tc)
5382 #endif
5383 {
5384         if (handle != TC_H_ROOT || tc->type != TC_SETUP_MQPRIO)
5385                 return -EINVAL;
5386         return i40e_setup_tc(netdev, tc->tc);
5387 }
5388
5389 /**
5390  * i40e_open - Called when a network interface is made active
5391  * @netdev: network interface device structure
5392  *
5393  * The open entry point is called when a network interface is made
5394  * active by the system (IFF_UP).  At this point all resources needed
5395  * for transmit and receive operations are allocated, the interrupt
5396  * handler is registered with the OS, the netdev watchdog subtask is
5397  * enabled, and the stack is notified that the interface is ready.
5398  *
5399  * Returns 0 on success, negative value on failure
5400  **/
5401 int i40e_open(struct net_device *netdev)
5402 {
5403         struct i40e_netdev_priv *np = netdev_priv(netdev);
5404         struct i40e_vsi *vsi = np->vsi;
5405         struct i40e_pf *pf = vsi->back;
5406         int err;
5407
5408         /* disallow open during test or if eeprom is broken */
5409         if (test_bit(__I40E_TESTING, &pf->state) ||
5410             test_bit(__I40E_BAD_EEPROM, &pf->state))
5411                 return -EBUSY;
5412
5413         netif_carrier_off(netdev);
5414
5415         err = i40e_vsi_open(vsi);
5416         if (err)
5417                 return err;
5418
5419         /* configure global TSO hardware offload settings */
5420         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5421                                                        TCP_FLAG_FIN) >> 16);
5422         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5423                                                        TCP_FLAG_FIN |
5424                                                        TCP_FLAG_CWR) >> 16);
5425         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5426
5427         udp_tunnel_get_rx_info(netdev);
5428
5429         return 0;
5430 }
5431
5432 /**
5433  * i40e_vsi_open -
5434  * @vsi: the VSI to open
5435  *
5436  * Finish initialization of the VSI.
5437  *
5438  * Returns 0 on success, negative value on failure
5439  **/
5440 int i40e_vsi_open(struct i40e_vsi *vsi)
5441 {
5442         struct i40e_pf *pf = vsi->back;
5443         char int_name[I40E_INT_NAME_STR_LEN];
5444         int err;
5445
5446         /* allocate descriptors */
5447         err = i40e_vsi_setup_tx_resources(vsi);
5448         if (err)
5449                 goto err_setup_tx;
5450         err = i40e_vsi_setup_rx_resources(vsi);
5451         if (err)
5452                 goto err_setup_rx;
5453
5454         err = i40e_vsi_configure(vsi);
5455         if (err)
5456                 goto err_setup_rx;
5457
5458         if (vsi->netdev) {
5459                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5460                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5461                 err = i40e_vsi_request_irq(vsi, int_name);
5462                 if (err)
5463                         goto err_setup_rx;
5464
5465                 /* Notify the stack of the actual queue counts. */
5466                 err = netif_set_real_num_tx_queues(vsi->netdev,
5467                                                    vsi->num_queue_pairs);
5468                 if (err)
5469                         goto err_set_queues;
5470
5471                 err = netif_set_real_num_rx_queues(vsi->netdev,
5472                                                    vsi->num_queue_pairs);
5473                 if (err)
5474                         goto err_set_queues;
5475
5476         } else if (vsi->type == I40E_VSI_FDIR) {
5477                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5478                          dev_driver_string(&pf->pdev->dev),
5479                          dev_name(&pf->pdev->dev));
5480                 err = i40e_vsi_request_irq(vsi, int_name);
5481                 if (err)
5482                         goto err_setup_rx;
5483
5484         } else {
5485                 err = -EINVAL;
5486                 goto err_setup_rx;
5487         }
5488
5489         err = i40e_up_complete(vsi);
5490         if (err)
5491                 goto err_up_complete;
5492
5493         return 0;
5494
5495 err_up_complete:
5496         i40e_down(vsi);
5497 err_set_queues:
5498         i40e_vsi_free_irq(vsi);
5499 err_setup_rx:
5500         i40e_vsi_free_rx_resources(vsi);
5501 err_setup_tx:
5502         i40e_vsi_free_tx_resources(vsi);
5503         if (vsi == pf->vsi[pf->lan_vsi])
5504                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5505
5506         return err;
5507 }
5508
5509 /**
5510  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5511  * @pf: Pointer to PF
5512  *
5513  * This function destroys the hlist where all the Flow Director
5514  * filters were saved.
5515  **/
5516 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5517 {
5518         struct i40e_fdir_filter *filter;
5519         struct hlist_node *node2;
5520
5521         hlist_for_each_entry_safe(filter, node2,
5522                                   &pf->fdir_filter_list, fdir_node) {
5523                 hlist_del(&filter->fdir_node);
5524                 kfree(filter);
5525         }
5526         pf->fdir_pf_active_filters = 0;
5527 }
5528
5529 /**
5530  * i40e_close - Disables a network interface
5531  * @netdev: network interface device structure
5532  *
5533  * The close entry point is called when an interface is de-activated
5534  * by the OS.  The hardware is still under the driver's control, but
5535  * this netdev interface is disabled.
5536  *
5537  * Returns 0, this is not allowed to fail
5538  **/
5539 int i40e_close(struct net_device *netdev)
5540 {
5541         struct i40e_netdev_priv *np = netdev_priv(netdev);
5542         struct i40e_vsi *vsi = np->vsi;
5543
5544         i40e_vsi_close(vsi);
5545
5546         return 0;
5547 }
5548
5549 /**
5550  * i40e_do_reset - Start a PF or Core Reset sequence
5551  * @pf: board private structure
5552  * @reset_flags: which reset is requested
5553  *
5554  * The essential difference in resets is that the PF Reset
5555  * doesn't clear the packet buffers, doesn't reset the PE
5556  * firmware, and doesn't bother the other PFs on the chip.
5557  **/
5558 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5559 {
5560         u32 val;
5561
5562         WARN_ON(in_interrupt());
5563
5564
5565         /* do the biggest reset indicated */
5566         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5567
5568                 /* Request a Global Reset
5569                  *
5570                  * This will start the chip's countdown to the actual full
5571                  * chip reset event, and a warning interrupt to be sent
5572                  * to all PFs, including the requestor.  Our handler
5573                  * for the warning interrupt will deal with the shutdown
5574                  * and recovery of the switch setup.
5575                  */
5576                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5577                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5578                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5579                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5580
5581         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5582
5583                 /* Request a Core Reset
5584                  *
5585                  * Same as Global Reset, except does *not* include the MAC/PHY
5586                  */
5587                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5588                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5589                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5590                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5591                 i40e_flush(&pf->hw);
5592
5593         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5594
5595                 /* Request a PF Reset
5596                  *
5597                  * Resets only the PF-specific registers
5598                  *
5599                  * This goes directly to the tear-down and rebuild of
5600                  * the switch, since we need to do all the recovery as
5601                  * for the Core Reset.
5602                  */
5603                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5604                 i40e_handle_reset_warning(pf);
5605
5606         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5607                 int v;
5608
5609                 /* Find the VSI(s) that requested a re-init */
5610                 dev_info(&pf->pdev->dev,
5611                          "VSI reinit requested\n");
5612                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5613                         struct i40e_vsi *vsi = pf->vsi[v];
5614
5615                         if (vsi != NULL &&
5616                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5617                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5618                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5619                         }
5620                 }
5621         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5622                 int v;
5623
5624                 /* Find the VSI(s) that needs to be brought down */
5625                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5626                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5627                         struct i40e_vsi *vsi = pf->vsi[v];
5628
5629                         if (vsi != NULL &&
5630                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5631                                 set_bit(__I40E_DOWN, &vsi->state);
5632                                 i40e_down(vsi);
5633                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5634                         }
5635                 }
5636         } else {
5637                 dev_info(&pf->pdev->dev,
5638                          "bad reset request 0x%08x\n", reset_flags);
5639         }
5640 }
5641
5642 #ifdef CONFIG_I40E_DCB
5643 /**
5644  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5645  * @pf: board private structure
5646  * @old_cfg: current DCB config
5647  * @new_cfg: new DCB config
5648  **/
5649 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5650                             struct i40e_dcbx_config *old_cfg,
5651                             struct i40e_dcbx_config *new_cfg)
5652 {
5653         bool need_reconfig = false;
5654
5655         /* Check if ETS configuration has changed */
5656         if (memcmp(&new_cfg->etscfg,
5657                    &old_cfg->etscfg,
5658                    sizeof(new_cfg->etscfg))) {
5659                 /* If Priority Table has changed reconfig is needed */
5660                 if (memcmp(&new_cfg->etscfg.prioritytable,
5661                            &old_cfg->etscfg.prioritytable,
5662                            sizeof(new_cfg->etscfg.prioritytable))) {
5663                         need_reconfig = true;
5664                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5665                 }
5666
5667                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5668                            &old_cfg->etscfg.tcbwtable,
5669                            sizeof(new_cfg->etscfg.tcbwtable)))
5670                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5671
5672                 if (memcmp(&new_cfg->etscfg.tsatable,
5673                            &old_cfg->etscfg.tsatable,
5674                            sizeof(new_cfg->etscfg.tsatable)))
5675                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5676         }
5677
5678         /* Check if PFC configuration has changed */
5679         if (memcmp(&new_cfg->pfc,
5680                    &old_cfg->pfc,
5681                    sizeof(new_cfg->pfc))) {
5682                 need_reconfig = true;
5683                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5684         }
5685
5686         /* Check if APP Table has changed */
5687         if (memcmp(&new_cfg->app,
5688                    &old_cfg->app,
5689                    sizeof(new_cfg->app))) {
5690                 need_reconfig = true;
5691                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5692         }
5693
5694         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5695         return need_reconfig;
5696 }
5697
5698 /**
5699  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5700  * @pf: board private structure
5701  * @e: event info posted on ARQ
5702  **/
5703 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5704                                   struct i40e_arq_event_info *e)
5705 {
5706         struct i40e_aqc_lldp_get_mib *mib =
5707                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5708         struct i40e_hw *hw = &pf->hw;
5709         struct i40e_dcbx_config tmp_dcbx_cfg;
5710         bool need_reconfig = false;
5711         int ret = 0;
5712         u8 type;
5713
5714         /* Not DCB capable or capability disabled */
5715         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5716                 return ret;
5717
5718         /* Ignore if event is not for Nearest Bridge */
5719         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5720                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5721         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5722         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5723                 return ret;
5724
5725         /* Check MIB Type and return if event for Remote MIB update */
5726         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5727         dev_dbg(&pf->pdev->dev,
5728                 "LLDP event mib type %s\n", type ? "remote" : "local");
5729         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5730                 /* Update the remote cached instance and return */
5731                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5732                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5733                                 &hw->remote_dcbx_config);
5734                 goto exit;
5735         }
5736
5737         /* Store the old configuration */
5738         tmp_dcbx_cfg = hw->local_dcbx_config;
5739
5740         /* Reset the old DCBx configuration data */
5741         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5742         /* Get updated DCBX data from firmware */
5743         ret = i40e_get_dcb_config(&pf->hw);
5744         if (ret) {
5745                 dev_info(&pf->pdev->dev,
5746                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5747                          i40e_stat_str(&pf->hw, ret),
5748                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5749                 goto exit;
5750         }
5751
5752         /* No change detected in DCBX configs */
5753         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5754                     sizeof(tmp_dcbx_cfg))) {
5755                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5756                 goto exit;
5757         }
5758
5759         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5760                                                &hw->local_dcbx_config);
5761
5762         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5763
5764         if (!need_reconfig)
5765                 goto exit;
5766
5767         /* Enable DCB tagging only when more than one TC */
5768         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5769                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5770         else
5771                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5772
5773         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5774         /* Reconfiguration needed quiesce all VSIs */
5775         i40e_pf_quiesce_all_vsi(pf);
5776
5777         /* Changes in configuration update VEB/VSI */
5778         i40e_dcb_reconfigure(pf);
5779
5780         ret = i40e_resume_port_tx(pf);
5781
5782         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5783         /* In case of error no point in resuming VSIs */
5784         if (ret)
5785                 goto exit;
5786
5787         /* Wait for the PF's queues to be disabled */
5788         ret = i40e_pf_wait_queues_disabled(pf);
5789         if (ret) {
5790                 /* Schedule PF reset to recover */
5791                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5792                 i40e_service_event_schedule(pf);
5793         } else {
5794                 i40e_pf_unquiesce_all_vsi(pf);
5795                 /* Notify the client for the DCB changes */
5796                 i40e_notify_client_of_l2_param_changes(pf->vsi[pf->lan_vsi]);
5797         }
5798
5799 exit:
5800         return ret;
5801 }
5802 #endif /* CONFIG_I40E_DCB */
5803
5804 /**
5805  * i40e_do_reset_safe - Protected reset path for userland calls.
5806  * @pf: board private structure
5807  * @reset_flags: which reset is requested
5808  *
5809  **/
5810 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5811 {
5812         rtnl_lock();
5813         i40e_do_reset(pf, reset_flags);
5814         rtnl_unlock();
5815 }
5816
5817 /**
5818  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5819  * @pf: board private structure
5820  * @e: event info posted on ARQ
5821  *
5822  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5823  * and VF queues
5824  **/
5825 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5826                                            struct i40e_arq_event_info *e)
5827 {
5828         struct i40e_aqc_lan_overflow *data =
5829                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5830         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5831         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5832         struct i40e_hw *hw = &pf->hw;
5833         struct i40e_vf *vf;
5834         u16 vf_id;
5835
5836         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5837                 queue, qtx_ctl);
5838
5839         /* Queue belongs to VF, find the VF and issue VF reset */
5840         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5841             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5842                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5843                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5844                 vf_id -= hw->func_caps.vf_base_id;
5845                 vf = &pf->vf[vf_id];
5846                 i40e_vc_notify_vf_reset(vf);
5847                 /* Allow VF to process pending reset notification */
5848                 msleep(20);
5849                 i40e_reset_vf(vf, false);
5850         }
5851 }
5852
5853 /**
5854  * i40e_service_event_complete - Finish up the service event
5855  * @pf: board private structure
5856  **/
5857 static void i40e_service_event_complete(struct i40e_pf *pf)
5858 {
5859         WARN_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5860
5861         /* flush memory to make sure state is correct before next watchog */
5862         smp_mb__before_atomic();
5863         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5864 }
5865
5866 /**
5867  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5868  * @pf: board private structure
5869  **/
5870 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5871 {
5872         u32 val, fcnt_prog;
5873
5874         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5875         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5876         return fcnt_prog;
5877 }
5878
5879 /**
5880  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5881  * @pf: board private structure
5882  **/
5883 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5884 {
5885         u32 val, fcnt_prog;
5886
5887         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5888         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5889                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5890                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5891         return fcnt_prog;
5892 }
5893
5894 /**
5895  * i40e_get_global_fd_count - Get total FD filters programmed on device
5896  * @pf: board private structure
5897  **/
5898 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5899 {
5900         u32 val, fcnt_prog;
5901
5902         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5903         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5904                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5905                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5906         return fcnt_prog;
5907 }
5908
5909 /**
5910  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5911  * @pf: board private structure
5912  **/
5913 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5914 {
5915         struct i40e_fdir_filter *filter;
5916         u32 fcnt_prog, fcnt_avail;
5917         struct hlist_node *node;
5918
5919         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5920                 return;
5921
5922         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5923          * to re-enable
5924          */
5925         fcnt_prog = i40e_get_global_fd_count(pf);
5926         fcnt_avail = pf->fdir_pf_filter_count;
5927         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5928             (pf->fd_add_err == 0) ||
5929             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5930                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5931                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5932                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5933                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5934                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5935                 }
5936         }
5937
5938         /* Wait for some more space to be available to turn on ATR. We also
5939          * must check that no existing ntuple rules for TCP are in effect
5940          */
5941         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5942                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5943                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED) &&
5944                     (pf->fd_tcp_rule == 0)) {
5945                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5946                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5947                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table and there are no conflicting ntuple rules\n");
5948                 }
5949         }
5950
5951         /* if hw had a problem adding a filter, delete it */
5952         if (pf->fd_inv > 0) {
5953                 hlist_for_each_entry_safe(filter, node,
5954                                           &pf->fdir_filter_list, fdir_node) {
5955                         if (filter->fd_id == pf->fd_inv) {
5956                                 hlist_del(&filter->fdir_node);
5957                                 kfree(filter);
5958                                 pf->fdir_pf_active_filters--;
5959                         }
5960                 }
5961         }
5962 }
5963
5964 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5965 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5966 /**
5967  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5968  * @pf: board private structure
5969  **/
5970 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5971 {
5972         unsigned long min_flush_time;
5973         int flush_wait_retry = 50;
5974         bool disable_atr = false;
5975         int fd_room;
5976         int reg;
5977
5978         if (!time_after(jiffies, pf->fd_flush_timestamp +
5979                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
5980                 return;
5981
5982         /* If the flush is happening too quick and we have mostly SB rules we
5983          * should not re-enable ATR for some time.
5984          */
5985         min_flush_time = pf->fd_flush_timestamp +
5986                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5987         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5988
5989         if (!(time_after(jiffies, min_flush_time)) &&
5990             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5991                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5992                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5993                 disable_atr = true;
5994         }
5995
5996         pf->fd_flush_timestamp = jiffies;
5997         pf->auto_disable_flags |= I40E_FLAG_FD_ATR_ENABLED;
5998         /* flush all filters */
5999         wr32(&pf->hw, I40E_PFQF_CTL_1,
6000              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
6001         i40e_flush(&pf->hw);
6002         pf->fd_flush_cnt++;
6003         pf->fd_add_err = 0;
6004         do {
6005                 /* Check FD flush status every 5-6msec */
6006                 usleep_range(5000, 6000);
6007                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
6008                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
6009                         break;
6010         } while (flush_wait_retry--);
6011         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
6012                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
6013         } else {
6014                 /* replay sideband filters */
6015                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
6016                 if (!disable_atr)
6017                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
6018                 clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
6019                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
6020                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
6021         }
6022 }
6023
6024 /**
6025  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
6026  * @pf: board private structure
6027  **/
6028 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
6029 {
6030         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
6031 }
6032
6033 /* We can see up to 256 filter programming desc in transit if the filters are
6034  * being applied really fast; before we see the first
6035  * filter miss error on Rx queue 0. Accumulating enough error messages before
6036  * reacting will make sure we don't cause flush too often.
6037  */
6038 #define I40E_MAX_FD_PROGRAM_ERROR 256
6039
6040 /**
6041  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
6042  * @pf: board private structure
6043  **/
6044 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
6045 {
6046
6047         /* if interface is down do nothing */
6048         if (test_bit(__I40E_DOWN, &pf->state))
6049                 return;
6050
6051         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
6052                 i40e_fdir_flush_and_replay(pf);
6053
6054         i40e_fdir_check_and_reenable(pf);
6055
6056 }
6057
6058 /**
6059  * i40e_vsi_link_event - notify VSI of a link event
6060  * @vsi: vsi to be notified
6061  * @link_up: link up or down
6062  **/
6063 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
6064 {
6065         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
6066                 return;
6067
6068         switch (vsi->type) {
6069         case I40E_VSI_MAIN:
6070 #ifdef I40E_FCOE
6071         case I40E_VSI_FCOE:
6072 #endif
6073                 if (!vsi->netdev || !vsi->netdev_registered)
6074                         break;
6075
6076                 if (link_up) {
6077                         netif_carrier_on(vsi->netdev);
6078                         netif_tx_wake_all_queues(vsi->netdev);
6079                 } else {
6080                         netif_carrier_off(vsi->netdev);
6081                         netif_tx_stop_all_queues(vsi->netdev);
6082                 }
6083                 break;
6084
6085         case I40E_VSI_SRIOV:
6086         case I40E_VSI_VMDQ2:
6087         case I40E_VSI_CTRL:
6088         case I40E_VSI_IWARP:
6089         case I40E_VSI_MIRROR:
6090         default:
6091                 /* there is no notification for other VSIs */
6092                 break;
6093         }
6094 }
6095
6096 /**
6097  * i40e_veb_link_event - notify elements on the veb of a link event
6098  * @veb: veb to be notified
6099  * @link_up: link up or down
6100  **/
6101 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
6102 {
6103         struct i40e_pf *pf;
6104         int i;
6105
6106         if (!veb || !veb->pf)
6107                 return;
6108         pf = veb->pf;
6109
6110         /* depth first... */
6111         for (i = 0; i < I40E_MAX_VEB; i++)
6112                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
6113                         i40e_veb_link_event(pf->veb[i], link_up);
6114
6115         /* ... now the local VSIs */
6116         for (i = 0; i < pf->num_alloc_vsi; i++)
6117                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
6118                         i40e_vsi_link_event(pf->vsi[i], link_up);
6119 }
6120
6121 /**
6122  * i40e_link_event - Update netif_carrier status
6123  * @pf: board private structure
6124  **/
6125 static void i40e_link_event(struct i40e_pf *pf)
6126 {
6127         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6128         u8 new_link_speed, old_link_speed;
6129         i40e_status status;
6130         bool new_link, old_link;
6131
6132         /* save off old link status information */
6133         pf->hw.phy.link_info_old = pf->hw.phy.link_info;
6134
6135         /* set this to force the get_link_status call to refresh state */
6136         pf->hw.phy.get_link_info = true;
6137
6138         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
6139
6140         status = i40e_get_link_status(&pf->hw, &new_link);
6141         if (status) {
6142                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
6143                         status);
6144                 return;
6145         }
6146
6147         old_link_speed = pf->hw.phy.link_info_old.link_speed;
6148         new_link_speed = pf->hw.phy.link_info.link_speed;
6149
6150         if (new_link == old_link &&
6151             new_link_speed == old_link_speed &&
6152             (test_bit(__I40E_DOWN, &vsi->state) ||
6153              new_link == netif_carrier_ok(vsi->netdev)))
6154                 return;
6155
6156         if (!test_bit(__I40E_DOWN, &vsi->state))
6157                 i40e_print_link_message(vsi, new_link);
6158
6159         /* Notify the base of the switch tree connected to
6160          * the link.  Floating VEBs are not notified.
6161          */
6162         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
6163                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
6164         else
6165                 i40e_vsi_link_event(vsi, new_link);
6166
6167         if (pf->vf)
6168                 i40e_vc_notify_link_state(pf);
6169
6170         if (pf->flags & I40E_FLAG_PTP)
6171                 i40e_ptp_set_increment(pf);
6172 }
6173
6174 /**
6175  * i40e_watchdog_subtask - periodic checks not using event driven response
6176  * @pf: board private structure
6177  **/
6178 static void i40e_watchdog_subtask(struct i40e_pf *pf)
6179 {
6180         int i;
6181
6182         /* if interface is down do nothing */
6183         if (test_bit(__I40E_DOWN, &pf->state) ||
6184             test_bit(__I40E_CONFIG_BUSY, &pf->state))
6185                 return;
6186
6187         /* make sure we don't do these things too often */
6188         if (time_before(jiffies, (pf->service_timer_previous +
6189                                   pf->service_timer_period)))
6190                 return;
6191         pf->service_timer_previous = jiffies;
6192
6193         if (pf->flags & I40E_FLAG_LINK_POLLING_ENABLED)
6194                 i40e_link_event(pf);
6195
6196         /* Update the stats for active netdevs so the network stack
6197          * can look at updated numbers whenever it cares to
6198          */
6199         for (i = 0; i < pf->num_alloc_vsi; i++)
6200                 if (pf->vsi[i] && pf->vsi[i]->netdev)
6201                         i40e_update_stats(pf->vsi[i]);
6202
6203         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
6204                 /* Update the stats for the active switching components */
6205                 for (i = 0; i < I40E_MAX_VEB; i++)
6206                         if (pf->veb[i])
6207                                 i40e_update_veb_stats(pf->veb[i]);
6208         }
6209
6210         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
6211 }
6212
6213 /**
6214  * i40e_reset_subtask - Set up for resetting the device and driver
6215  * @pf: board private structure
6216  **/
6217 static void i40e_reset_subtask(struct i40e_pf *pf)
6218 {
6219         u32 reset_flags = 0;
6220
6221         rtnl_lock();
6222         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
6223                 reset_flags |= BIT(__I40E_REINIT_REQUESTED);
6224                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
6225         }
6226         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
6227                 reset_flags |= BIT(__I40E_PF_RESET_REQUESTED);
6228                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6229         }
6230         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
6231                 reset_flags |= BIT(__I40E_CORE_RESET_REQUESTED);
6232                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
6233         }
6234         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
6235                 reset_flags |= BIT(__I40E_GLOBAL_RESET_REQUESTED);
6236                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
6237         }
6238         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
6239                 reset_flags |= BIT(__I40E_DOWN_REQUESTED);
6240                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
6241         }
6242
6243         /* If there's a recovery already waiting, it takes
6244          * precedence before starting a new reset sequence.
6245          */
6246         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
6247                 i40e_handle_reset_warning(pf);
6248                 goto unlock;
6249         }
6250
6251         /* If we're already down or resetting, just bail */
6252         if (reset_flags &&
6253             !test_bit(__I40E_DOWN, &pf->state) &&
6254             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
6255                 i40e_do_reset(pf, reset_flags);
6256
6257 unlock:
6258         rtnl_unlock();
6259 }
6260
6261 /**
6262  * i40e_handle_link_event - Handle link event
6263  * @pf: board private structure
6264  * @e: event info posted on ARQ
6265  **/
6266 static void i40e_handle_link_event(struct i40e_pf *pf,
6267                                    struct i40e_arq_event_info *e)
6268 {
6269         struct i40e_aqc_get_link_status *status =
6270                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
6271
6272         /* Do a new status request to re-enable LSE reporting
6273          * and load new status information into the hw struct
6274          * This completely ignores any state information
6275          * in the ARQ event info, instead choosing to always
6276          * issue the AQ update link status command.
6277          */
6278         i40e_link_event(pf);
6279
6280         /* check for unqualified module, if link is down */
6281         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
6282             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
6283             (!(status->link_info & I40E_AQ_LINK_UP)))
6284                 dev_err(&pf->pdev->dev,
6285                         "The driver failed to link because an unqualified module was detected.\n");
6286 }
6287
6288 /**
6289  * i40e_clean_adminq_subtask - Clean the AdminQ rings
6290  * @pf: board private structure
6291  **/
6292 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6293 {
6294         struct i40e_arq_event_info event;
6295         struct i40e_hw *hw = &pf->hw;
6296         u16 pending, i = 0;
6297         i40e_status ret;
6298         u16 opcode;
6299         u32 oldval;
6300         u32 val;
6301
6302         /* Do not run clean AQ when PF reset fails */
6303         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6304                 return;
6305
6306         /* check for error indications */
6307         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6308         oldval = val;
6309         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6310                 if (hw->debug_mask & I40E_DEBUG_AQ)
6311                         dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6312                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6313         }
6314         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6315                 if (hw->debug_mask & I40E_DEBUG_AQ)
6316                         dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6317                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6318                 pf->arq_overflows++;
6319         }
6320         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6321                 if (hw->debug_mask & I40E_DEBUG_AQ)
6322                         dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6323                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6324         }
6325         if (oldval != val)
6326                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6327
6328         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6329         oldval = val;
6330         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6331                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6332                         dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6333                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6334         }
6335         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6336                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6337                         dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6338                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6339         }
6340         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6341                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6342                         dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6343                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6344         }
6345         if (oldval != val)
6346                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6347
6348         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6349         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6350         if (!event.msg_buf)
6351                 return;
6352
6353         do {
6354                 ret = i40e_clean_arq_element(hw, &event, &pending);
6355                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6356                         break;
6357                 else if (ret) {
6358                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6359                         break;
6360                 }
6361
6362                 opcode = le16_to_cpu(event.desc.opcode);
6363                 switch (opcode) {
6364
6365                 case i40e_aqc_opc_get_link_status:
6366                         i40e_handle_link_event(pf, &event);
6367                         break;
6368                 case i40e_aqc_opc_send_msg_to_pf:
6369                         ret = i40e_vc_process_vf_msg(pf,
6370                                         le16_to_cpu(event.desc.retval),
6371                                         le32_to_cpu(event.desc.cookie_high),
6372                                         le32_to_cpu(event.desc.cookie_low),
6373                                         event.msg_buf,
6374                                         event.msg_len);
6375                         break;
6376                 case i40e_aqc_opc_lldp_update_mib:
6377                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6378 #ifdef CONFIG_I40E_DCB
6379                         rtnl_lock();
6380                         ret = i40e_handle_lldp_event(pf, &event);
6381                         rtnl_unlock();
6382 #endif /* CONFIG_I40E_DCB */
6383                         break;
6384                 case i40e_aqc_opc_event_lan_overflow:
6385                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6386                         i40e_handle_lan_overflow_event(pf, &event);
6387                         break;
6388                 case i40e_aqc_opc_send_msg_to_peer:
6389                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6390                         break;
6391                 case i40e_aqc_opc_nvm_erase:
6392                 case i40e_aqc_opc_nvm_update:
6393                 case i40e_aqc_opc_oem_post_update:
6394                         i40e_debug(&pf->hw, I40E_DEBUG_NVM,
6395                                    "ARQ NVM operation 0x%04x completed\n",
6396                                    opcode);
6397                         break;
6398                 default:
6399                         dev_info(&pf->pdev->dev,
6400                                  "ARQ: Unknown event 0x%04x ignored\n",
6401                                  opcode);
6402                         break;
6403                 }
6404         } while (pending && (i++ < pf->adminq_work_limit));
6405
6406         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6407         /* re-enable Admin queue interrupt cause */
6408         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6409         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6410         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6411         i40e_flush(hw);
6412
6413         kfree(event.msg_buf);
6414 }
6415
6416 /**
6417  * i40e_verify_eeprom - make sure eeprom is good to use
6418  * @pf: board private structure
6419  **/
6420 static void i40e_verify_eeprom(struct i40e_pf *pf)
6421 {
6422         int err;
6423
6424         err = i40e_diag_eeprom_test(&pf->hw);
6425         if (err) {
6426                 /* retry in case of garbage read */
6427                 err = i40e_diag_eeprom_test(&pf->hw);
6428                 if (err) {
6429                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6430                                  err);
6431                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6432                 }
6433         }
6434
6435         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6436                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6437                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6438         }
6439 }
6440
6441 /**
6442  * i40e_enable_pf_switch_lb
6443  * @pf: pointer to the PF structure
6444  *
6445  * enable switch loop back or die - no point in a return value
6446  **/
6447 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6448 {
6449         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6450         struct i40e_vsi_context ctxt;
6451         int ret;
6452
6453         ctxt.seid = pf->main_vsi_seid;
6454         ctxt.pf_num = pf->hw.pf_id;
6455         ctxt.vf_num = 0;
6456         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6457         if (ret) {
6458                 dev_info(&pf->pdev->dev,
6459                          "couldn't get PF vsi config, err %s aq_err %s\n",
6460                          i40e_stat_str(&pf->hw, ret),
6461                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6462                 return;
6463         }
6464         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6465         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6466         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6467
6468         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6469         if (ret) {
6470                 dev_info(&pf->pdev->dev,
6471                          "update vsi switch failed, err %s aq_err %s\n",
6472                          i40e_stat_str(&pf->hw, ret),
6473                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6474         }
6475 }
6476
6477 /**
6478  * i40e_disable_pf_switch_lb
6479  * @pf: pointer to the PF structure
6480  *
6481  * disable switch loop back or die - no point in a return value
6482  **/
6483 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6484 {
6485         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6486         struct i40e_vsi_context ctxt;
6487         int ret;
6488
6489         ctxt.seid = pf->main_vsi_seid;
6490         ctxt.pf_num = pf->hw.pf_id;
6491         ctxt.vf_num = 0;
6492         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6493         if (ret) {
6494                 dev_info(&pf->pdev->dev,
6495                          "couldn't get PF vsi config, err %s aq_err %s\n",
6496                          i40e_stat_str(&pf->hw, ret),
6497                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6498                 return;
6499         }
6500         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6501         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6502         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6503
6504         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6505         if (ret) {
6506                 dev_info(&pf->pdev->dev,
6507                          "update vsi switch failed, err %s aq_err %s\n",
6508                          i40e_stat_str(&pf->hw, ret),
6509                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6510         }
6511 }
6512
6513 /**
6514  * i40e_config_bridge_mode - Configure the HW bridge mode
6515  * @veb: pointer to the bridge instance
6516  *
6517  * Configure the loop back mode for the LAN VSI that is downlink to the
6518  * specified HW bridge instance. It is expected this function is called
6519  * when a new HW bridge is instantiated.
6520  **/
6521 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6522 {
6523         struct i40e_pf *pf = veb->pf;
6524
6525         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
6526                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6527                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6528         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6529                 i40e_disable_pf_switch_lb(pf);
6530         else
6531                 i40e_enable_pf_switch_lb(pf);
6532 }
6533
6534 /**
6535  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6536  * @veb: pointer to the VEB instance
6537  *
6538  * This is a recursive function that first builds the attached VSIs then
6539  * recurses in to build the next layer of VEB.  We track the connections
6540  * through our own index numbers because the seid's from the HW could
6541  * change across the reset.
6542  **/
6543 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6544 {
6545         struct i40e_vsi *ctl_vsi = NULL;
6546         struct i40e_pf *pf = veb->pf;
6547         int v, veb_idx;
6548         int ret;
6549
6550         /* build VSI that owns this VEB, temporarily attached to base VEB */
6551         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6552                 if (pf->vsi[v] &&
6553                     pf->vsi[v]->veb_idx == veb->idx &&
6554                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6555                         ctl_vsi = pf->vsi[v];
6556                         break;
6557                 }
6558         }
6559         if (!ctl_vsi) {
6560                 dev_info(&pf->pdev->dev,
6561                          "missing owner VSI for veb_idx %d\n", veb->idx);
6562                 ret = -ENOENT;
6563                 goto end_reconstitute;
6564         }
6565         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6566                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6567         ret = i40e_add_vsi(ctl_vsi);
6568         if (ret) {
6569                 dev_info(&pf->pdev->dev,
6570                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6571                          veb->idx, ret);
6572                 goto end_reconstitute;
6573         }
6574         i40e_vsi_reset_stats(ctl_vsi);
6575
6576         /* create the VEB in the switch and move the VSI onto the VEB */
6577         ret = i40e_add_veb(veb, ctl_vsi);
6578         if (ret)
6579                 goto end_reconstitute;
6580
6581         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6582                 veb->bridge_mode = BRIDGE_MODE_VEB;
6583         else
6584                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6585         i40e_config_bridge_mode(veb);
6586
6587         /* create the remaining VSIs attached to this VEB */
6588         for (v = 0; v < pf->num_alloc_vsi; v++) {
6589                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6590                         continue;
6591
6592                 if (pf->vsi[v]->veb_idx == veb->idx) {
6593                         struct i40e_vsi *vsi = pf->vsi[v];
6594
6595                         vsi->uplink_seid = veb->seid;
6596                         ret = i40e_add_vsi(vsi);
6597                         if (ret) {
6598                                 dev_info(&pf->pdev->dev,
6599                                          "rebuild of vsi_idx %d failed: %d\n",
6600                                          v, ret);
6601                                 goto end_reconstitute;
6602                         }
6603                         i40e_vsi_reset_stats(vsi);
6604                 }
6605         }
6606
6607         /* create any VEBs attached to this VEB - RECURSION */
6608         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6609                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6610                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6611                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6612                         if (ret)
6613                                 break;
6614                 }
6615         }
6616
6617 end_reconstitute:
6618         return ret;
6619 }
6620
6621 /**
6622  * i40e_get_capabilities - get info about the HW
6623  * @pf: the PF struct
6624  **/
6625 static int i40e_get_capabilities(struct i40e_pf *pf)
6626 {
6627         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6628         u16 data_size;
6629         int buf_len;
6630         int err;
6631
6632         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6633         do {
6634                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6635                 if (!cap_buf)
6636                         return -ENOMEM;
6637
6638                 /* this loads the data into the hw struct for us */
6639                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6640                                             &data_size,
6641                                             i40e_aqc_opc_list_func_capabilities,
6642                                             NULL);
6643                 /* data loaded, buffer no longer needed */
6644                 kfree(cap_buf);
6645
6646                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6647                         /* retry with a larger buffer */
6648                         buf_len = data_size;
6649                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK || err) {
6650                         dev_info(&pf->pdev->dev,
6651                                  "capability discovery failed, err %s aq_err %s\n",
6652                                  i40e_stat_str(&pf->hw, err),
6653                                  i40e_aq_str(&pf->hw,
6654                                              pf->hw.aq.asq_last_status));
6655                         return -ENODEV;
6656                 }
6657         } while (err);
6658
6659         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6660                 dev_info(&pf->pdev->dev,
6661                          "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",
6662                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6663                          pf->hw.func_caps.num_msix_vectors,
6664                          pf->hw.func_caps.num_msix_vectors_vf,
6665                          pf->hw.func_caps.fd_filters_guaranteed,
6666                          pf->hw.func_caps.fd_filters_best_effort,
6667                          pf->hw.func_caps.num_tx_qp,
6668                          pf->hw.func_caps.num_vsis);
6669
6670 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6671                        + pf->hw.func_caps.num_vfs)
6672         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6673                 dev_info(&pf->pdev->dev,
6674                          "got num_vsis %d, setting num_vsis to %d\n",
6675                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6676                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6677         }
6678
6679         return 0;
6680 }
6681
6682 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6683
6684 /**
6685  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6686  * @pf: board private structure
6687  **/
6688 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6689 {
6690         struct i40e_vsi *vsi;
6691         int i;
6692
6693         /* quick workaround for an NVM issue that leaves a critical register
6694          * uninitialized
6695          */
6696         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6697                 static const u32 hkey[] = {
6698                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6699                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6700                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6701                         0x95b3a76d};
6702
6703                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6704                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6705         }
6706
6707         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6708                 return;
6709
6710         /* find existing VSI and see if it needs configuring */
6711         vsi = NULL;
6712         for (i = 0; i < pf->num_alloc_vsi; i++) {
6713                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6714                         vsi = pf->vsi[i];
6715                         break;
6716                 }
6717         }
6718
6719         /* create a new VSI if none exists */
6720         if (!vsi) {
6721                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6722                                      pf->vsi[pf->lan_vsi]->seid, 0);
6723                 if (!vsi) {
6724                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6725                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6726                         return;
6727                 }
6728         }
6729
6730         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6731 }
6732
6733 /**
6734  * i40e_fdir_teardown - release the Flow Director resources
6735  * @pf: board private structure
6736  **/
6737 static void i40e_fdir_teardown(struct i40e_pf *pf)
6738 {
6739         int i;
6740
6741         i40e_fdir_filter_exit(pf);
6742         for (i = 0; i < pf->num_alloc_vsi; i++) {
6743                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6744                         i40e_vsi_release(pf->vsi[i]);
6745                         break;
6746                 }
6747         }
6748 }
6749
6750 /**
6751  * i40e_prep_for_reset - prep for the core to reset
6752  * @pf: board private structure
6753  *
6754  * Close up the VFs and other things in prep for PF Reset.
6755   **/
6756 static void i40e_prep_for_reset(struct i40e_pf *pf)
6757 {
6758         struct i40e_hw *hw = &pf->hw;
6759         i40e_status ret = 0;
6760         u32 v;
6761
6762         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6763         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6764                 return;
6765         if (i40e_check_asq_alive(&pf->hw))
6766                 i40e_vc_notify_reset(pf);
6767
6768         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6769
6770         /* quiesce the VSIs and their queues that are not already DOWN */
6771         i40e_pf_quiesce_all_vsi(pf);
6772
6773         for (v = 0; v < pf->num_alloc_vsi; v++) {
6774                 if (pf->vsi[v])
6775                         pf->vsi[v]->seid = 0;
6776         }
6777
6778         i40e_shutdown_adminq(&pf->hw);
6779
6780         /* call shutdown HMC */
6781         if (hw->hmc.hmc_obj) {
6782                 ret = i40e_shutdown_lan_hmc(hw);
6783                 if (ret)
6784                         dev_warn(&pf->pdev->dev,
6785                                  "shutdown_lan_hmc failed: %d\n", ret);
6786         }
6787 }
6788
6789 /**
6790  * i40e_send_version - update firmware with driver version
6791  * @pf: PF struct
6792  */
6793 static void i40e_send_version(struct i40e_pf *pf)
6794 {
6795         struct i40e_driver_version dv;
6796
6797         dv.major_version = DRV_VERSION_MAJOR;
6798         dv.minor_version = DRV_VERSION_MINOR;
6799         dv.build_version = DRV_VERSION_BUILD;
6800         dv.subbuild_version = 0;
6801         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6802         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6803 }
6804
6805 /**
6806  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6807  * @pf: board private structure
6808  * @reinit: if the Main VSI needs to re-initialized.
6809  **/
6810 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6811 {
6812         struct i40e_hw *hw = &pf->hw;
6813         u8 set_fc_aq_fail = 0;
6814         i40e_status ret;
6815         u32 val;
6816         u32 v;
6817
6818         /* Now we wait for GRST to settle out.
6819          * We don't have to delete the VEBs or VSIs from the hw switch
6820          * because the reset will make them disappear.
6821          */
6822         ret = i40e_pf_reset(hw);
6823         if (ret) {
6824                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6825                 set_bit(__I40E_RESET_FAILED, &pf->state);
6826                 goto clear_recovery;
6827         }
6828         pf->pfr_count++;
6829
6830         if (test_bit(__I40E_DOWN, &pf->state))
6831                 goto clear_recovery;
6832         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6833
6834         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6835         ret = i40e_init_adminq(&pf->hw);
6836         if (ret) {
6837                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6838                          i40e_stat_str(&pf->hw, ret),
6839                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6840                 goto clear_recovery;
6841         }
6842
6843         /* re-verify the eeprom if we just had an EMP reset */
6844         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6845                 i40e_verify_eeprom(pf);
6846
6847         i40e_clear_pxe_mode(hw);
6848         ret = i40e_get_capabilities(pf);
6849         if (ret)
6850                 goto end_core_reset;
6851
6852         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6853                                 hw->func_caps.num_rx_qp,
6854                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6855         if (ret) {
6856                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6857                 goto end_core_reset;
6858         }
6859         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6860         if (ret) {
6861                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6862                 goto end_core_reset;
6863         }
6864
6865 #ifdef CONFIG_I40E_DCB
6866         ret = i40e_init_pf_dcb(pf);
6867         if (ret) {
6868                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6869                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6870                 /* Continue without DCB enabled */
6871         }
6872 #endif /* CONFIG_I40E_DCB */
6873 #ifdef I40E_FCOE
6874         i40e_init_pf_fcoe(pf);
6875
6876 #endif
6877         /* do basic switch setup */
6878         ret = i40e_setup_pf_switch(pf, reinit);
6879         if (ret)
6880                 goto end_core_reset;
6881
6882         /* The driver only wants link up/down and module qualification
6883          * reports from firmware.  Note the negative logic.
6884          */
6885         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6886                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
6887                                          I40E_AQ_EVENT_MEDIA_NA |
6888                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
6889         if (ret)
6890                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6891                          i40e_stat_str(&pf->hw, ret),
6892                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6893
6894         /* make sure our flow control settings are restored */
6895         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6896         if (ret)
6897                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
6898                         i40e_stat_str(&pf->hw, ret),
6899                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6900
6901         /* Rebuild the VSIs and VEBs that existed before reset.
6902          * They are still in our local switch element arrays, so only
6903          * need to rebuild the switch model in the HW.
6904          *
6905          * If there were VEBs but the reconstitution failed, we'll try
6906          * try to recover minimal use by getting the basic PF VSI working.
6907          */
6908         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6909                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6910                 /* find the one VEB connected to the MAC, and find orphans */
6911                 for (v = 0; v < I40E_MAX_VEB; v++) {
6912                         if (!pf->veb[v])
6913                                 continue;
6914
6915                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6916                             pf->veb[v]->uplink_seid == 0) {
6917                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6918
6919                                 if (!ret)
6920                                         continue;
6921
6922                                 /* If Main VEB failed, we're in deep doodoo,
6923                                  * so give up rebuilding the switch and set up
6924                                  * for minimal rebuild of PF VSI.
6925                                  * If orphan failed, we'll report the error
6926                                  * but try to keep going.
6927                                  */
6928                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6929                                         dev_info(&pf->pdev->dev,
6930                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6931                                                  ret);
6932                                         pf->vsi[pf->lan_vsi]->uplink_seid
6933                                                                 = pf->mac_seid;
6934                                         break;
6935                                 } else if (pf->veb[v]->uplink_seid == 0) {
6936                                         dev_info(&pf->pdev->dev,
6937                                                  "rebuild of orphan VEB failed: %d\n",
6938                                                  ret);
6939                                 }
6940                         }
6941                 }
6942         }
6943
6944         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6945                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6946                 /* no VEB, so rebuild only the Main VSI */
6947                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6948                 if (ret) {
6949                         dev_info(&pf->pdev->dev,
6950                                  "rebuild of Main VSI failed: %d\n", ret);
6951                         goto end_core_reset;
6952                 }
6953         }
6954
6955         /* Reconfigure hardware for allowing smaller MSS in the case
6956          * of TSO, so that we avoid the MDD being fired and causing
6957          * a reset in the case of small MSS+TSO.
6958          */
6959 #define I40E_REG_MSS          0x000E64DC
6960 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
6961 #define I40E_64BYTE_MSS       0x400000
6962         val = rd32(hw, I40E_REG_MSS);
6963         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
6964                 val &= ~I40E_REG_MSS_MIN_MASK;
6965                 val |= I40E_64BYTE_MSS;
6966                 wr32(hw, I40E_REG_MSS, val);
6967         }
6968
6969         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
6970                 msleep(75);
6971                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6972                 if (ret)
6973                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6974                                  i40e_stat_str(&pf->hw, ret),
6975                                  i40e_aq_str(&pf->hw,
6976                                              pf->hw.aq.asq_last_status));
6977         }
6978         /* reinit the misc interrupt */
6979         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6980                 ret = i40e_setup_misc_vector(pf);
6981
6982         /* Add a filter to drop all Flow control frames from any VSI from being
6983          * transmitted. By doing so we stop a malicious VF from sending out
6984          * PAUSE or PFC frames and potentially controlling traffic for other
6985          * PF/VF VSIs.
6986          * The FW can still send Flow control frames if enabled.
6987          */
6988         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
6989                                                        pf->main_vsi_seid);
6990
6991         /* restart the VSIs that were rebuilt and running before the reset */
6992         i40e_pf_unquiesce_all_vsi(pf);
6993
6994         if (pf->num_alloc_vfs) {
6995                 for (v = 0; v < pf->num_alloc_vfs; v++)
6996                         i40e_reset_vf(&pf->vf[v], true);
6997         }
6998
6999         /* tell the firmware that we're starting */
7000         i40e_send_version(pf);
7001
7002 end_core_reset:
7003         clear_bit(__I40E_RESET_FAILED, &pf->state);
7004 clear_recovery:
7005         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
7006 }
7007
7008 /**
7009  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
7010  * @pf: board private structure
7011  *
7012  * Close up the VFs and other things in prep for a Core Reset,
7013  * then get ready to rebuild the world.
7014  **/
7015 static void i40e_handle_reset_warning(struct i40e_pf *pf)
7016 {
7017         i40e_prep_for_reset(pf);
7018         i40e_reset_and_rebuild(pf, false);
7019 }
7020
7021 /**
7022  * i40e_handle_mdd_event
7023  * @pf: pointer to the PF structure
7024  *
7025  * Called from the MDD irq handler to identify possibly malicious vfs
7026  **/
7027 static void i40e_handle_mdd_event(struct i40e_pf *pf)
7028 {
7029         struct i40e_hw *hw = &pf->hw;
7030         bool mdd_detected = false;
7031         bool pf_mdd_detected = false;
7032         struct i40e_vf *vf;
7033         u32 reg;
7034         int i;
7035
7036         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
7037                 return;
7038
7039         /* find what triggered the MDD event */
7040         reg = rd32(hw, I40E_GL_MDET_TX);
7041         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
7042                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
7043                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
7044                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
7045                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
7046                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
7047                                 I40E_GL_MDET_TX_EVENT_SHIFT;
7048                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
7049                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
7050                                 pf->hw.func_caps.base_queue;
7051                 if (netif_msg_tx_err(pf))
7052                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
7053                                  event, queue, pf_num, vf_num);
7054                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
7055                 mdd_detected = true;
7056         }
7057         reg = rd32(hw, I40E_GL_MDET_RX);
7058         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
7059                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
7060                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
7061                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
7062                                 I40E_GL_MDET_RX_EVENT_SHIFT;
7063                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
7064                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
7065                                 pf->hw.func_caps.base_queue;
7066                 if (netif_msg_rx_err(pf))
7067                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
7068                                  event, queue, func);
7069                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
7070                 mdd_detected = true;
7071         }
7072
7073         if (mdd_detected) {
7074                 reg = rd32(hw, I40E_PF_MDET_TX);
7075                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
7076                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
7077                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
7078                         pf_mdd_detected = true;
7079                 }
7080                 reg = rd32(hw, I40E_PF_MDET_RX);
7081                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
7082                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
7083                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
7084                         pf_mdd_detected = true;
7085                 }
7086                 /* Queue belongs to the PF, initiate a reset */
7087                 if (pf_mdd_detected) {
7088                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
7089                         i40e_service_event_schedule(pf);
7090                 }
7091         }
7092
7093         /* see if one of the VFs needs its hand slapped */
7094         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
7095                 vf = &(pf->vf[i]);
7096                 reg = rd32(hw, I40E_VP_MDET_TX(i));
7097                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
7098                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
7099                         vf->num_mdd_events++;
7100                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
7101                                  i);
7102                 }
7103
7104                 reg = rd32(hw, I40E_VP_MDET_RX(i));
7105                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
7106                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
7107                         vf->num_mdd_events++;
7108                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
7109                                  i);
7110                 }
7111
7112                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
7113                         dev_info(&pf->pdev->dev,
7114                                  "Too many MDD events on VF %d, disabled\n", i);
7115                         dev_info(&pf->pdev->dev,
7116                                  "Use PF Control I/F to re-enable the VF\n");
7117                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
7118                 }
7119         }
7120
7121         /* re-enable mdd interrupt cause */
7122         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
7123         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
7124         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
7125         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
7126         i40e_flush(hw);
7127 }
7128
7129 /**
7130  * i40e_sync_udp_filters_subtask - Sync the VSI filter list with HW
7131  * @pf: board private structure
7132  **/
7133 static void i40e_sync_udp_filters_subtask(struct i40e_pf *pf)
7134 {
7135         struct i40e_hw *hw = &pf->hw;
7136         i40e_status ret;
7137         __be16 port;
7138         int i;
7139
7140         if (!(pf->flags & I40E_FLAG_UDP_FILTER_SYNC))
7141                 return;
7142
7143         pf->flags &= ~I40E_FLAG_UDP_FILTER_SYNC;
7144
7145         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7146                 if (pf->pending_udp_bitmap & BIT_ULL(i)) {
7147                         pf->pending_udp_bitmap &= ~BIT_ULL(i);
7148                         port = pf->udp_ports[i].index;
7149                         if (port)
7150                                 ret = i40e_aq_add_udp_tunnel(hw, port,
7151                                                         pf->udp_ports[i].type,
7152                                                         NULL, NULL);
7153                         else
7154                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
7155
7156                         if (ret) {
7157                                 dev_dbg(&pf->pdev->dev,
7158                                         "%s %s port %d, index %d failed, err %s aq_err %s\n",
7159                                         pf->udp_ports[i].type ? "vxlan" : "geneve",
7160                                         port ? "add" : "delete",
7161                                         ntohs(port), i,
7162                                         i40e_stat_str(&pf->hw, ret),
7163                                         i40e_aq_str(&pf->hw,
7164                                                     pf->hw.aq.asq_last_status));
7165                                 pf->udp_ports[i].index = 0;
7166                         }
7167                 }
7168         }
7169 }
7170
7171 /**
7172  * i40e_service_task - Run the driver's async subtasks
7173  * @work: pointer to work_struct containing our data
7174  **/
7175 static void i40e_service_task(struct work_struct *work)
7176 {
7177         struct i40e_pf *pf = container_of(work,
7178                                           struct i40e_pf,
7179                                           service_task);
7180         unsigned long start_time = jiffies;
7181
7182         /* don't bother with service tasks if a reset is in progress */
7183         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7184                 i40e_service_event_complete(pf);
7185                 return;
7186         }
7187
7188         i40e_detect_recover_hung(pf);
7189         i40e_sync_filters_subtask(pf);
7190         i40e_reset_subtask(pf);
7191         i40e_handle_mdd_event(pf);
7192         i40e_vc_process_vflr_event(pf);
7193         i40e_watchdog_subtask(pf);
7194         i40e_fdir_reinit_subtask(pf);
7195         i40e_client_subtask(pf);
7196         i40e_sync_filters_subtask(pf);
7197         i40e_sync_udp_filters_subtask(pf);
7198         i40e_clean_adminq_subtask(pf);
7199
7200         i40e_service_event_complete(pf);
7201
7202         /* If the tasks have taken longer than one timer cycle or there
7203          * is more work to be done, reschedule the service task now
7204          * rather than wait for the timer to tick again.
7205          */
7206         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
7207             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
7208             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
7209             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
7210                 i40e_service_event_schedule(pf);
7211 }
7212
7213 /**
7214  * i40e_service_timer - timer callback
7215  * @data: pointer to PF struct
7216  **/
7217 static void i40e_service_timer(unsigned long data)
7218 {
7219         struct i40e_pf *pf = (struct i40e_pf *)data;
7220
7221         mod_timer(&pf->service_timer,
7222                   round_jiffies(jiffies + pf->service_timer_period));
7223         i40e_service_event_schedule(pf);
7224 }
7225
7226 /**
7227  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
7228  * @vsi: the VSI being configured
7229  **/
7230 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
7231 {
7232         struct i40e_pf *pf = vsi->back;
7233
7234         switch (vsi->type) {
7235         case I40E_VSI_MAIN:
7236                 vsi->alloc_queue_pairs = pf->num_lan_qps;
7237                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7238                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7239                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7240                         vsi->num_q_vectors = pf->num_lan_msix;
7241                 else
7242                         vsi->num_q_vectors = 1;
7243
7244                 break;
7245
7246         case I40E_VSI_FDIR:
7247                 vsi->alloc_queue_pairs = 1;
7248                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
7249                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7250                 vsi->num_q_vectors = pf->num_fdsb_msix;
7251                 break;
7252
7253         case I40E_VSI_VMDQ2:
7254                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
7255                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7256                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7257                 vsi->num_q_vectors = pf->num_vmdq_msix;
7258                 break;
7259
7260         case I40E_VSI_SRIOV:
7261                 vsi->alloc_queue_pairs = pf->num_vf_qps;
7262                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7263                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7264                 break;
7265
7266 #ifdef I40E_FCOE
7267         case I40E_VSI_FCOE:
7268                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
7269                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7270                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7271                 vsi->num_q_vectors = pf->num_fcoe_msix;
7272                 break;
7273
7274 #endif /* I40E_FCOE */
7275         default:
7276                 WARN_ON(1);
7277                 return -ENODATA;
7278         }
7279
7280         return 0;
7281 }
7282
7283 /**
7284  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
7285  * @type: VSI pointer
7286  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
7287  *
7288  * On error: returns error code (negative)
7289  * On success: returns 0
7290  **/
7291 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
7292 {
7293         int size;
7294         int ret = 0;
7295
7296         /* allocate memory for both Tx and Rx ring pointers */
7297         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
7298         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
7299         if (!vsi->tx_rings)
7300                 return -ENOMEM;
7301         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
7302
7303         if (alloc_qvectors) {
7304                 /* allocate memory for q_vector pointers */
7305                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
7306                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
7307                 if (!vsi->q_vectors) {
7308                         ret = -ENOMEM;
7309                         goto err_vectors;
7310                 }
7311         }
7312         return ret;
7313
7314 err_vectors:
7315         kfree(vsi->tx_rings);
7316         return ret;
7317 }
7318
7319 /**
7320  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
7321  * @pf: board private structure
7322  * @type: type of VSI
7323  *
7324  * On error: returns error code (negative)
7325  * On success: returns vsi index in PF (positive)
7326  **/
7327 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7328 {
7329         int ret = -ENODEV;
7330         struct i40e_vsi *vsi;
7331         int vsi_idx;
7332         int i;
7333
7334         /* Need to protect the allocation of the VSIs at the PF level */
7335         mutex_lock(&pf->switch_mutex);
7336
7337         /* VSI list may be fragmented if VSI creation/destruction has
7338          * been happening.  We can afford to do a quick scan to look
7339          * for any free VSIs in the list.
7340          *
7341          * find next empty vsi slot, looping back around if necessary
7342          */
7343         i = pf->next_vsi;
7344         while (i < pf->num_alloc_vsi && pf->vsi[i])
7345                 i++;
7346         if (i >= pf->num_alloc_vsi) {
7347                 i = 0;
7348                 while (i < pf->next_vsi && pf->vsi[i])
7349                         i++;
7350         }
7351
7352         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7353                 vsi_idx = i;             /* Found one! */
7354         } else {
7355                 ret = -ENODEV;
7356                 goto unlock_pf;  /* out of VSI slots! */
7357         }
7358         pf->next_vsi = ++i;
7359
7360         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7361         if (!vsi) {
7362                 ret = -ENOMEM;
7363                 goto unlock_pf;
7364         }
7365         vsi->type = type;
7366         vsi->back = pf;
7367         set_bit(__I40E_DOWN, &vsi->state);
7368         vsi->flags = 0;
7369         vsi->idx = vsi_idx;
7370         vsi->int_rate_limit = 0;
7371         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7372                                 pf->rss_table_size : 64;
7373         vsi->netdev_registered = false;
7374         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7375         INIT_LIST_HEAD(&vsi->mac_filter_list);
7376         vsi->irqs_ready = false;
7377
7378         ret = i40e_set_num_rings_in_vsi(vsi);
7379         if (ret)
7380                 goto err_rings;
7381
7382         ret = i40e_vsi_alloc_arrays(vsi, true);
7383         if (ret)
7384                 goto err_rings;
7385
7386         /* Setup default MSIX irq handler for VSI */
7387         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7388
7389         /* Initialize VSI lock */
7390         spin_lock_init(&vsi->mac_filter_list_lock);
7391         pf->vsi[vsi_idx] = vsi;
7392         ret = vsi_idx;
7393         goto unlock_pf;
7394
7395 err_rings:
7396         pf->next_vsi = i - 1;
7397         kfree(vsi);
7398 unlock_pf:
7399         mutex_unlock(&pf->switch_mutex);
7400         return ret;
7401 }
7402
7403 /**
7404  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7405  * @type: VSI pointer
7406  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7407  *
7408  * On error: returns error code (negative)
7409  * On success: returns 0
7410  **/
7411 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7412 {
7413         /* free the ring and vector containers */
7414         if (free_qvectors) {
7415                 kfree(vsi->q_vectors);
7416                 vsi->q_vectors = NULL;
7417         }
7418         kfree(vsi->tx_rings);
7419         vsi->tx_rings = NULL;
7420         vsi->rx_rings = NULL;
7421 }
7422
7423 /**
7424  * i40e_clear_rss_config_user - clear the user configured RSS hash keys
7425  * and lookup table
7426  * @vsi: Pointer to VSI structure
7427  */
7428 static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
7429 {
7430         if (!vsi)
7431                 return;
7432
7433         kfree(vsi->rss_hkey_user);
7434         vsi->rss_hkey_user = NULL;
7435
7436         kfree(vsi->rss_lut_user);
7437         vsi->rss_lut_user = NULL;
7438 }
7439
7440 /**
7441  * i40e_vsi_clear - Deallocate the VSI provided
7442  * @vsi: the VSI being un-configured
7443  **/
7444 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7445 {
7446         struct i40e_pf *pf;
7447
7448         if (!vsi)
7449                 return 0;
7450
7451         if (!vsi->back)
7452                 goto free_vsi;
7453         pf = vsi->back;
7454
7455         mutex_lock(&pf->switch_mutex);
7456         if (!pf->vsi[vsi->idx]) {
7457                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7458                         vsi->idx, vsi->idx, vsi, vsi->type);
7459                 goto unlock_vsi;
7460         }
7461
7462         if (pf->vsi[vsi->idx] != vsi) {
7463                 dev_err(&pf->pdev->dev,
7464                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7465                         pf->vsi[vsi->idx]->idx,
7466                         pf->vsi[vsi->idx],
7467                         pf->vsi[vsi->idx]->type,
7468                         vsi->idx, vsi, vsi->type);
7469                 goto unlock_vsi;
7470         }
7471
7472         /* updates the PF for this cleared vsi */
7473         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7474         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7475
7476         i40e_vsi_free_arrays(vsi, true);
7477         i40e_clear_rss_config_user(vsi);
7478
7479         pf->vsi[vsi->idx] = NULL;
7480         if (vsi->idx < pf->next_vsi)
7481                 pf->next_vsi = vsi->idx;
7482
7483 unlock_vsi:
7484         mutex_unlock(&pf->switch_mutex);
7485 free_vsi:
7486         kfree(vsi);
7487
7488         return 0;
7489 }
7490
7491 /**
7492  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7493  * @vsi: the VSI being cleaned
7494  **/
7495 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7496 {
7497         int i;
7498
7499         if (vsi->tx_rings && vsi->tx_rings[0]) {
7500                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7501                         kfree_rcu(vsi->tx_rings[i], rcu);
7502                         vsi->tx_rings[i] = NULL;
7503                         vsi->rx_rings[i] = NULL;
7504                 }
7505         }
7506 }
7507
7508 /**
7509  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7510  * @vsi: the VSI being configured
7511  **/
7512 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7513 {
7514         struct i40e_ring *tx_ring, *rx_ring;
7515         struct i40e_pf *pf = vsi->back;
7516         int i;
7517
7518         /* Set basic values in the rings to be used later during open() */
7519         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7520                 /* allocate space for both Tx and Rx in one shot */
7521                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7522                 if (!tx_ring)
7523                         goto err_out;
7524
7525                 tx_ring->queue_index = i;
7526                 tx_ring->reg_idx = vsi->base_queue + i;
7527                 tx_ring->ring_active = false;
7528                 tx_ring->vsi = vsi;
7529                 tx_ring->netdev = vsi->netdev;
7530                 tx_ring->dev = &pf->pdev->dev;
7531                 tx_ring->count = vsi->num_desc;
7532                 tx_ring->size = 0;
7533                 tx_ring->dcb_tc = 0;
7534                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7535                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7536                 tx_ring->tx_itr_setting = pf->tx_itr_default;
7537                 vsi->tx_rings[i] = tx_ring;
7538
7539                 rx_ring = &tx_ring[1];
7540                 rx_ring->queue_index = i;
7541                 rx_ring->reg_idx = vsi->base_queue + i;
7542                 rx_ring->ring_active = false;
7543                 rx_ring->vsi = vsi;
7544                 rx_ring->netdev = vsi->netdev;
7545                 rx_ring->dev = &pf->pdev->dev;
7546                 rx_ring->count = vsi->num_desc;
7547                 rx_ring->size = 0;
7548                 rx_ring->dcb_tc = 0;
7549                 rx_ring->rx_itr_setting = pf->rx_itr_default;
7550                 vsi->rx_rings[i] = rx_ring;
7551         }
7552
7553         return 0;
7554
7555 err_out:
7556         i40e_vsi_clear_rings(vsi);
7557         return -ENOMEM;
7558 }
7559
7560 /**
7561  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7562  * @pf: board private structure
7563  * @vectors: the number of MSI-X vectors to request
7564  *
7565  * Returns the number of vectors reserved, or error
7566  **/
7567 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7568 {
7569         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7570                                         I40E_MIN_MSIX, vectors);
7571         if (vectors < 0) {
7572                 dev_info(&pf->pdev->dev,
7573                          "MSI-X vector reservation failed: %d\n", vectors);
7574                 vectors = 0;
7575         }
7576
7577         return vectors;
7578 }
7579
7580 /**
7581  * i40e_init_msix - Setup the MSIX capability
7582  * @pf: board private structure
7583  *
7584  * Work with the OS to set up the MSIX vectors needed.
7585  *
7586  * Returns the number of vectors reserved or negative on failure
7587  **/
7588 static int i40e_init_msix(struct i40e_pf *pf)
7589 {
7590         struct i40e_hw *hw = &pf->hw;
7591         int vectors_left;
7592         int v_budget, i;
7593         int v_actual;
7594         int iwarp_requested = 0;
7595
7596         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7597                 return -ENODEV;
7598
7599         /* The number of vectors we'll request will be comprised of:
7600          *   - Add 1 for "other" cause for Admin Queue events, etc.
7601          *   - The number of LAN queue pairs
7602          *      - Queues being used for RSS.
7603          *              We don't need as many as max_rss_size vectors.
7604          *              use rss_size instead in the calculation since that
7605          *              is governed by number of cpus in the system.
7606          *      - assumes symmetric Tx/Rx pairing
7607          *   - The number of VMDq pairs
7608          *   - The CPU count within the NUMA node if iWARP is enabled
7609 #ifdef I40E_FCOE
7610          *   - The number of FCOE qps.
7611 #endif
7612          * Once we count this up, try the request.
7613          *
7614          * If we can't get what we want, we'll simplify to nearly nothing
7615          * and try again.  If that still fails, we punt.
7616          */
7617         vectors_left = hw->func_caps.num_msix_vectors;
7618         v_budget = 0;
7619
7620         /* reserve one vector for miscellaneous handler */
7621         if (vectors_left) {
7622                 v_budget++;
7623                 vectors_left--;
7624         }
7625
7626         /* reserve vectors for the main PF traffic queues */
7627         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7628         vectors_left -= pf->num_lan_msix;
7629         v_budget += pf->num_lan_msix;
7630
7631         /* reserve one vector for sideband flow director */
7632         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7633                 if (vectors_left) {
7634                         pf->num_fdsb_msix = 1;
7635                         v_budget++;
7636                         vectors_left--;
7637                 } else {
7638                         pf->num_fdsb_msix = 0;
7639                 }
7640         }
7641
7642 #ifdef I40E_FCOE
7643         /* can we reserve enough for FCoE? */
7644         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7645                 if (!vectors_left)
7646                         pf->num_fcoe_msix = 0;
7647                 else if (vectors_left >= pf->num_fcoe_qps)
7648                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7649                 else
7650                         pf->num_fcoe_msix = 1;
7651                 v_budget += pf->num_fcoe_msix;
7652                 vectors_left -= pf->num_fcoe_msix;
7653         }
7654
7655 #endif
7656         /* can we reserve enough for iWARP? */
7657         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7658                 iwarp_requested = pf->num_iwarp_msix;
7659
7660                 if (!vectors_left)
7661                         pf->num_iwarp_msix = 0;
7662                 else if (vectors_left < pf->num_iwarp_msix)
7663                         pf->num_iwarp_msix = 1;
7664                 v_budget += pf->num_iwarp_msix;
7665                 vectors_left -= pf->num_iwarp_msix;
7666         }
7667
7668         /* any vectors left over go for VMDq support */
7669         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7670                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7671                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7672
7673                 if (!vectors_left) {
7674                         pf->num_vmdq_msix = 0;
7675                         pf->num_vmdq_qps = 0;
7676                 } else {
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
7692         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7693                                    GFP_KERNEL);
7694         if (!pf->msix_entries)
7695                 return -ENOMEM;
7696
7697         for (i = 0; i < v_budget; i++)
7698                 pf->msix_entries[i].entry = i;
7699         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7700
7701         if (v_actual < I40E_MIN_MSIX) {
7702                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7703                 kfree(pf->msix_entries);
7704                 pf->msix_entries = NULL;
7705                 pci_disable_msix(pf->pdev);
7706                 return -ENODEV;
7707
7708         } else if (v_actual == I40E_MIN_MSIX) {
7709                 /* Adjust for minimal MSIX use */
7710                 pf->num_vmdq_vsis = 0;
7711                 pf->num_vmdq_qps = 0;
7712                 pf->num_lan_qps = 1;
7713                 pf->num_lan_msix = 1;
7714
7715         } else if (!vectors_left) {
7716                 /* If we have limited resources, we will start with no vectors
7717                  * for the special features and then allocate vectors to some
7718                  * of these features based on the policy and at the end disable
7719                  * the features that did not get any vectors.
7720                  */
7721                 int vec;
7722
7723                 dev_info(&pf->pdev->dev,
7724                          "MSI-X vector limit reached, attempting to redistribute vectors\n");
7725                 /* reserve the misc vector */
7726                 vec = v_actual - 1;
7727
7728                 /* Scale vector usage down */
7729                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7730                 pf->num_vmdq_vsis = 1;
7731                 pf->num_vmdq_qps = 1;
7732 #ifdef I40E_FCOE
7733                 pf->num_fcoe_qps = 0;
7734                 pf->num_fcoe_msix = 0;
7735 #endif
7736
7737                 /* partition out the remaining vectors */
7738                 switch (vec) {
7739                 case 2:
7740                         pf->num_lan_msix = 1;
7741                         break;
7742                 case 3:
7743                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7744                                 pf->num_lan_msix = 1;
7745                                 pf->num_iwarp_msix = 1;
7746                         } else {
7747                                 pf->num_lan_msix = 2;
7748                         }
7749 #ifdef I40E_FCOE
7750                         /* give one vector to FCoE */
7751                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7752                                 pf->num_lan_msix = 1;
7753                                 pf->num_fcoe_msix = 1;
7754                         }
7755 #endif
7756                         break;
7757                 default:
7758                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7759                                 pf->num_iwarp_msix = min_t(int, (vec / 3),
7760                                                  iwarp_requested);
7761                                 pf->num_vmdq_vsis = min_t(int, (vec / 3),
7762                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7763                         } else {
7764                                 pf->num_vmdq_vsis = min_t(int, (vec / 2),
7765                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7766                         }
7767                         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7768                                 pf->num_fdsb_msix = 1;
7769                                 vec--;
7770                         }
7771                         pf->num_lan_msix = min_t(int,
7772                                (vec - (pf->num_iwarp_msix + pf->num_vmdq_vsis)),
7773                                                               pf->num_lan_msix);
7774                         pf->num_lan_qps = pf->num_lan_msix;
7775 #ifdef I40E_FCOE
7776                         /* give one vector to FCoE */
7777                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7778                                 pf->num_fcoe_msix = 1;
7779                                 vec--;
7780                         }
7781 #endif
7782                         break;
7783                 }
7784         }
7785
7786         if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
7787             (pf->num_fdsb_msix == 0)) {
7788                 dev_info(&pf->pdev->dev, "Sideband Flowdir disabled, not enough MSI-X vectors\n");
7789                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7790         }
7791         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7792             (pf->num_vmdq_msix == 0)) {
7793                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7794                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7795         }
7796
7797         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
7798             (pf->num_iwarp_msix == 0)) {
7799                 dev_info(&pf->pdev->dev, "IWARP disabled, not enough MSI-X vectors\n");
7800                 pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
7801         }
7802 #ifdef I40E_FCOE
7803
7804         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7805                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7806                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7807         }
7808 #endif
7809         i40e_debug(&pf->hw, I40E_DEBUG_INIT,
7810                    "MSI-X vector distribution: PF %d, VMDq %d, FDSB %d, iWARP %d\n",
7811                    pf->num_lan_msix,
7812                    pf->num_vmdq_msix * pf->num_vmdq_vsis,
7813                    pf->num_fdsb_msix,
7814                    pf->num_iwarp_msix);
7815
7816         return v_actual;
7817 }
7818
7819 /**
7820  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7821  * @vsi: the VSI being configured
7822  * @v_idx: index of the vector in the vsi struct
7823  * @cpu: cpu to be used on affinity_mask
7824  *
7825  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7826  **/
7827 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx, int cpu)
7828 {
7829         struct i40e_q_vector *q_vector;
7830
7831         /* allocate q_vector */
7832         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7833         if (!q_vector)
7834                 return -ENOMEM;
7835
7836         q_vector->vsi = vsi;
7837         q_vector->v_idx = v_idx;
7838         cpumask_set_cpu(cpu, &q_vector->affinity_mask);
7839
7840         if (vsi->netdev)
7841                 netif_napi_add(vsi->netdev, &q_vector->napi,
7842                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7843
7844         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7845         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7846
7847         /* tie q_vector and vsi together */
7848         vsi->q_vectors[v_idx] = q_vector;
7849
7850         return 0;
7851 }
7852
7853 /**
7854  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7855  * @vsi: the VSI being configured
7856  *
7857  * We allocate one q_vector per queue interrupt.  If allocation fails we
7858  * return -ENOMEM.
7859  **/
7860 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7861 {
7862         struct i40e_pf *pf = vsi->back;
7863         int err, v_idx, num_q_vectors, current_cpu;
7864
7865         /* if not MSIX, give the one vector only to the LAN VSI */
7866         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7867                 num_q_vectors = vsi->num_q_vectors;
7868         else if (vsi == pf->vsi[pf->lan_vsi])
7869                 num_q_vectors = 1;
7870         else
7871                 return -EINVAL;
7872
7873         current_cpu = cpumask_first(cpu_online_mask);
7874
7875         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7876                 err = i40e_vsi_alloc_q_vector(vsi, v_idx, current_cpu);
7877                 if (err)
7878                         goto err_out;
7879                 current_cpu = cpumask_next(current_cpu, cpu_online_mask);
7880                 if (unlikely(current_cpu >= nr_cpu_ids))
7881                         current_cpu = cpumask_first(cpu_online_mask);
7882         }
7883
7884         return 0;
7885
7886 err_out:
7887         while (v_idx--)
7888                 i40e_free_q_vector(vsi, v_idx);
7889
7890         return err;
7891 }
7892
7893 /**
7894  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7895  * @pf: board private structure to initialize
7896  **/
7897 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7898 {
7899         int vectors = 0;
7900         ssize_t size;
7901
7902         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7903                 vectors = i40e_init_msix(pf);
7904                 if (vectors < 0) {
7905                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7906                                        I40E_FLAG_IWARP_ENABLED  |
7907 #ifdef I40E_FCOE
7908                                        I40E_FLAG_FCOE_ENABLED   |
7909 #endif
7910                                        I40E_FLAG_RSS_ENABLED    |
7911                                        I40E_FLAG_DCB_CAPABLE    |
7912                                        I40E_FLAG_DCB_ENABLED    |
7913                                        I40E_FLAG_SRIOV_ENABLED  |
7914                                        I40E_FLAG_FD_SB_ENABLED  |
7915                                        I40E_FLAG_FD_ATR_ENABLED |
7916                                        I40E_FLAG_VMDQ_ENABLED);
7917
7918                         /* rework the queue expectations without MSIX */
7919                         i40e_determine_queue_usage(pf);
7920                 }
7921         }
7922
7923         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7924             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7925                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7926                 vectors = pci_enable_msi(pf->pdev);
7927                 if (vectors < 0) {
7928                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7929                                  vectors);
7930                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7931                 }
7932                 vectors = 1;  /* one MSI or Legacy vector */
7933         }
7934
7935         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7936                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7937
7938         /* set up vector assignment tracking */
7939         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7940         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7941         if (!pf->irq_pile) {
7942                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7943                 return -ENOMEM;
7944         }
7945         pf->irq_pile->num_entries = vectors;
7946         pf->irq_pile->search_hint = 0;
7947
7948         /* track first vector for misc interrupts, ignore return */
7949         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7950
7951         return 0;
7952 }
7953
7954 /**
7955  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7956  * @pf: board private structure
7957  *
7958  * This sets up the handler for MSIX 0, which is used to manage the
7959  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7960  * when in MSI or Legacy interrupt mode.
7961  **/
7962 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7963 {
7964         struct i40e_hw *hw = &pf->hw;
7965         int err = 0;
7966
7967         /* Only request the irq if this is the first time through, and
7968          * not when we're rebuilding after a Reset
7969          */
7970         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7971                 err = request_irq(pf->msix_entries[0].vector,
7972                                   i40e_intr, 0, pf->int_name, pf);
7973                 if (err) {
7974                         dev_info(&pf->pdev->dev,
7975                                  "request_irq for %s failed: %d\n",
7976                                  pf->int_name, err);
7977                         return -EFAULT;
7978                 }
7979         }
7980
7981         i40e_enable_misc_int_causes(pf);
7982
7983         /* associate no queues to the misc vector */
7984         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7985         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7986
7987         i40e_flush(hw);
7988
7989         i40e_irq_dynamic_enable_icr0(pf, true);
7990
7991         return err;
7992 }
7993
7994 /**
7995  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7996  * @vsi: vsi structure
7997  * @seed: RSS hash seed
7998  **/
7999 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
8000                               u8 *lut, u16 lut_size)
8001 {
8002         struct i40e_pf *pf = vsi->back;
8003         struct i40e_hw *hw = &pf->hw;
8004         int ret = 0;
8005
8006         if (seed) {
8007                 struct i40e_aqc_get_set_rss_key_data *seed_dw =
8008                         (struct i40e_aqc_get_set_rss_key_data *)seed;
8009                 ret = i40e_aq_set_rss_key(hw, vsi->id, seed_dw);
8010                 if (ret) {
8011                         dev_info(&pf->pdev->dev,
8012                                  "Cannot set RSS key, err %s aq_err %s\n",
8013                                  i40e_stat_str(hw, ret),
8014                                  i40e_aq_str(hw, hw->aq.asq_last_status));
8015                         return ret;
8016                 }
8017         }
8018         if (lut) {
8019                 bool pf_lut = vsi->type == I40E_VSI_MAIN ? true : false;
8020
8021                 ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
8022                 if (ret) {
8023                         dev_info(&pf->pdev->dev,
8024                                  "Cannot set RSS lut, err %s aq_err %s\n",
8025                                  i40e_stat_str(hw, ret),
8026                                  i40e_aq_str(hw, hw->aq.asq_last_status));
8027                         return ret;
8028                 }
8029         }
8030         return ret;
8031 }
8032
8033 /**
8034  * i40e_get_rss_aq - Get RSS keys and lut by using AQ commands
8035  * @vsi: Pointer to vsi structure
8036  * @seed: Buffter to store the hash keys
8037  * @lut: Buffer to store the lookup table entries
8038  * @lut_size: Size of buffer to store the lookup table entries
8039  *
8040  * Return 0 on success, negative on failure
8041  */
8042 static int i40e_get_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
8043                            u8 *lut, u16 lut_size)
8044 {
8045         struct i40e_pf *pf = vsi->back;
8046         struct i40e_hw *hw = &pf->hw;
8047         int ret = 0;
8048
8049         if (seed) {
8050                 ret = i40e_aq_get_rss_key(hw, vsi->id,
8051                         (struct i40e_aqc_get_set_rss_key_data *)seed);
8052                 if (ret) {
8053                         dev_info(&pf->pdev->dev,
8054                                  "Cannot get RSS key, 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         if (lut) {
8063                 bool pf_lut = vsi->type == I40E_VSI_MAIN ? true : false;
8064
8065                 ret = i40e_aq_get_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
8066                 if (ret) {
8067                         dev_info(&pf->pdev->dev,
8068                                  "Cannot get RSS lut, err %s aq_err %s\n",
8069                                  i40e_stat_str(&pf->hw, ret),
8070                                  i40e_aq_str(&pf->hw,
8071                                              pf->hw.aq.asq_last_status));
8072                         return ret;
8073                 }
8074         }
8075
8076         return ret;
8077 }
8078
8079 /**
8080  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
8081  * @vsi: VSI structure
8082  **/
8083 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
8084 {
8085         u8 seed[I40E_HKEY_ARRAY_SIZE];
8086         struct i40e_pf *pf = vsi->back;
8087         u8 *lut;
8088         int ret;
8089
8090         if (!(pf->flags & I40E_FLAG_RSS_AQ_CAPABLE))
8091                 return 0;
8092
8093         if (!vsi->rss_size)
8094                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8095                                       vsi->num_queue_pairs);
8096         if (!vsi->rss_size)
8097                 return -EINVAL;
8098
8099         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8100         if (!lut)
8101                 return -ENOMEM;
8102         /* Use the user configured hash keys and lookup table if there is one,
8103          * otherwise use default
8104          */
8105         if (vsi->rss_lut_user)
8106                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8107         else
8108                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8109         if (vsi->rss_hkey_user)
8110                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8111         else
8112                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8113         ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
8114         kfree(lut);
8115
8116         return ret;
8117 }
8118
8119 /**
8120  * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
8121  * @vsi: Pointer to vsi structure
8122  * @seed: RSS hash seed
8123  * @lut: Lookup table
8124  * @lut_size: Lookup table size
8125  *
8126  * Returns 0 on success, negative on failure
8127  **/
8128 static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
8129                                const u8 *lut, u16 lut_size)
8130 {
8131         struct i40e_pf *pf = vsi->back;
8132         struct i40e_hw *hw = &pf->hw;
8133         u16 vf_id = vsi->vf_id;
8134         u8 i;
8135
8136         /* Fill out hash function seed */
8137         if (seed) {
8138                 u32 *seed_dw = (u32 *)seed;
8139
8140                 if (vsi->type == I40E_VSI_MAIN) {
8141                         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8142                                 i40e_write_rx_ctl(hw, I40E_PFQF_HKEY(i),
8143                                                   seed_dw[i]);
8144                 } else if (vsi->type == I40E_VSI_SRIOV) {
8145                         for (i = 0; i <= I40E_VFQF_HKEY1_MAX_INDEX; i++)
8146                                 i40e_write_rx_ctl(hw,
8147                                                   I40E_VFQF_HKEY1(i, vf_id),
8148                                                   seed_dw[i]);
8149                 } else {
8150                         dev_err(&pf->pdev->dev, "Cannot set RSS seed - invalid VSI type\n");
8151                 }
8152         }
8153
8154         if (lut) {
8155                 u32 *lut_dw = (u32 *)lut;
8156
8157                 if (vsi->type == I40E_VSI_MAIN) {
8158                         if (lut_size != I40E_HLUT_ARRAY_SIZE)
8159                                 return -EINVAL;
8160                         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8161                                 wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
8162                 } else if (vsi->type == I40E_VSI_SRIOV) {
8163                         if (lut_size != I40E_VF_HLUT_ARRAY_SIZE)
8164                                 return -EINVAL;
8165                         for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
8166                                 i40e_write_rx_ctl(hw,
8167                                                   I40E_VFQF_HLUT1(i, vf_id),
8168                                                   lut_dw[i]);
8169                 } else {
8170                         dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
8171                 }
8172         }
8173         i40e_flush(hw);
8174
8175         return 0;
8176 }
8177
8178 /**
8179  * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
8180  * @vsi: Pointer to VSI structure
8181  * @seed: Buffer to store the keys
8182  * @lut: Buffer to store the lookup table entries
8183  * @lut_size: Size of buffer to store the lookup table entries
8184  *
8185  * Returns 0 on success, negative on failure
8186  */
8187 static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
8188                             u8 *lut, u16 lut_size)
8189 {
8190         struct i40e_pf *pf = vsi->back;
8191         struct i40e_hw *hw = &pf->hw;
8192         u16 i;
8193
8194         if (seed) {
8195                 u32 *seed_dw = (u32 *)seed;
8196
8197                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8198                         seed_dw[i] = i40e_read_rx_ctl(hw, I40E_PFQF_HKEY(i));
8199         }
8200         if (lut) {
8201                 u32 *lut_dw = (u32 *)lut;
8202
8203                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
8204                         return -EINVAL;
8205                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8206                         lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
8207         }
8208
8209         return 0;
8210 }
8211
8212 /**
8213  * i40e_config_rss - Configure RSS keys and lut
8214  * @vsi: Pointer to VSI structure
8215  * @seed: RSS hash seed
8216  * @lut: Lookup table
8217  * @lut_size: Lookup table size
8218  *
8219  * Returns 0 on success, negative on failure
8220  */
8221 int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8222 {
8223         struct i40e_pf *pf = vsi->back;
8224
8225         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8226                 return i40e_config_rss_aq(vsi, seed, lut, lut_size);
8227         else
8228                 return i40e_config_rss_reg(vsi, seed, lut, lut_size);
8229 }
8230
8231 /**
8232  * i40e_get_rss - Get RSS keys and lut
8233  * @vsi: Pointer to VSI structure
8234  * @seed: Buffer to store the keys
8235  * @lut: Buffer to store the lookup table entries
8236  * lut_size: Size of buffer to store the lookup table entries
8237  *
8238  * Returns 0 on success, negative on failure
8239  */
8240 int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8241 {
8242         struct i40e_pf *pf = vsi->back;
8243
8244         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8245                 return i40e_get_rss_aq(vsi, seed, lut, lut_size);
8246         else
8247                 return i40e_get_rss_reg(vsi, seed, lut, lut_size);
8248 }
8249
8250 /**
8251  * i40e_fill_rss_lut - Fill the RSS lookup table with default values
8252  * @pf: Pointer to board private structure
8253  * @lut: Lookup table
8254  * @rss_table_size: Lookup table size
8255  * @rss_size: Range of queue number for hashing
8256  */
8257 void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
8258                        u16 rss_table_size, u16 rss_size)
8259 {
8260         u16 i;
8261
8262         for (i = 0; i < rss_table_size; i++)
8263                 lut[i] = i % rss_size;
8264 }
8265
8266 /**
8267  * i40e_pf_config_rss - Prepare for RSS if used
8268  * @pf: board private structure
8269  **/
8270 static int i40e_pf_config_rss(struct i40e_pf *pf)
8271 {
8272         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8273         u8 seed[I40E_HKEY_ARRAY_SIZE];
8274         u8 *lut;
8275         struct i40e_hw *hw = &pf->hw;
8276         u32 reg_val;
8277         u64 hena;
8278         int ret;
8279
8280         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
8281         hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
8282                 ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
8283         hena |= i40e_pf_get_default_rss_hena(pf);
8284
8285         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
8286         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
8287
8288         /* Determine the RSS table size based on the hardware capabilities */
8289         reg_val = i40e_read_rx_ctl(hw, I40E_PFQF_CTL_0);
8290         reg_val = (pf->rss_table_size == 512) ?
8291                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
8292                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
8293         i40e_write_rx_ctl(hw, I40E_PFQF_CTL_0, reg_val);
8294
8295         /* Determine the RSS size of the VSI */
8296         if (!vsi->rss_size)
8297                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8298                                       vsi->num_queue_pairs);
8299         if (!vsi->rss_size)
8300                 return -EINVAL;
8301
8302         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8303         if (!lut)
8304                 return -ENOMEM;
8305
8306         /* Use user configured lut if there is one, otherwise use default */
8307         if (vsi->rss_lut_user)
8308                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8309         else
8310                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8311
8312         /* Use user configured hash key if there is one, otherwise
8313          * use default.
8314          */
8315         if (vsi->rss_hkey_user)
8316                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8317         else
8318                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8319         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
8320         kfree(lut);
8321
8322         return ret;
8323 }
8324
8325 /**
8326  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
8327  * @pf: board private structure
8328  * @queue_count: the requested queue count for rss.
8329  *
8330  * returns 0 if rss is not enabled, if enabled returns the final rss queue
8331  * count which may be different from the requested queue count.
8332  **/
8333 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
8334 {
8335         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8336         int new_rss_size;
8337
8338         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
8339                 return 0;
8340
8341         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
8342
8343         if (queue_count != vsi->num_queue_pairs) {
8344                 vsi->req_queue_pairs = queue_count;
8345                 i40e_prep_for_reset(pf);
8346
8347                 pf->alloc_rss_size = new_rss_size;
8348
8349                 i40e_reset_and_rebuild(pf, true);
8350
8351                 /* Discard the user configured hash keys and lut, if less
8352                  * queues are enabled.
8353                  */
8354                 if (queue_count < vsi->rss_size) {
8355                         i40e_clear_rss_config_user(vsi);
8356                         dev_dbg(&pf->pdev->dev,
8357                                 "discard user configured hash keys and lut\n");
8358                 }
8359
8360                 /* Reset vsi->rss_size, as number of enabled queues changed */
8361                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8362                                       vsi->num_queue_pairs);
8363
8364                 i40e_pf_config_rss(pf);
8365         }
8366         dev_info(&pf->pdev->dev, "RSS count/HW max RSS count:  %d/%d\n",
8367                  pf->alloc_rss_size, pf->rss_size_max);
8368         return pf->alloc_rss_size;
8369 }
8370
8371 /**
8372  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
8373  * @pf: board private structure
8374  **/
8375 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
8376 {
8377         i40e_status status;
8378         bool min_valid, max_valid;
8379         u32 max_bw, min_bw;
8380
8381         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
8382                                            &min_valid, &max_valid);
8383
8384         if (!status) {
8385                 if (min_valid)
8386                         pf->npar_min_bw = min_bw;
8387                 if (max_valid)
8388                         pf->npar_max_bw = max_bw;
8389         }
8390
8391         return status;
8392 }
8393
8394 /**
8395  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
8396  * @pf: board private structure
8397  **/
8398 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
8399 {
8400         struct i40e_aqc_configure_partition_bw_data bw_data;
8401         i40e_status status;
8402
8403         /* Set the valid bit for this PF */
8404         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
8405         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
8406         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
8407
8408         /* Set the new bandwidths */
8409         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
8410
8411         return status;
8412 }
8413
8414 /**
8415  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
8416  * @pf: board private structure
8417  **/
8418 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
8419 {
8420         /* Commit temporary BW setting to permanent NVM image */
8421         enum i40e_admin_queue_err last_aq_status;
8422         i40e_status ret;
8423         u16 nvm_word;
8424
8425         if (pf->hw.partition_id != 1) {
8426                 dev_info(&pf->pdev->dev,
8427                          "Commit BW only works on partition 1! This is partition %d",
8428                          pf->hw.partition_id);
8429                 ret = I40E_NOT_SUPPORTED;
8430                 goto bw_commit_out;
8431         }
8432
8433         /* Acquire NVM for read access */
8434         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
8435         last_aq_status = pf->hw.aq.asq_last_status;
8436         if (ret) {
8437                 dev_info(&pf->pdev->dev,
8438                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
8439                          i40e_stat_str(&pf->hw, ret),
8440                          i40e_aq_str(&pf->hw, last_aq_status));
8441                 goto bw_commit_out;
8442         }
8443
8444         /* Read word 0x10 of NVM - SW compatibility word 1 */
8445         ret = i40e_aq_read_nvm(&pf->hw,
8446                                I40E_SR_NVM_CONTROL_WORD,
8447                                0x10, sizeof(nvm_word), &nvm_word,
8448                                false, NULL);
8449         /* Save off last admin queue command status before releasing
8450          * the NVM
8451          */
8452         last_aq_status = pf->hw.aq.asq_last_status;
8453         i40e_release_nvm(&pf->hw);
8454         if (ret) {
8455                 dev_info(&pf->pdev->dev, "NVM read error, 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
8461         /* Wait a bit for NVM release to complete */
8462         msleep(50);
8463
8464         /* Acquire NVM for write access */
8465         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
8466         last_aq_status = pf->hw.aq.asq_last_status;
8467         if (ret) {
8468                 dev_info(&pf->pdev->dev,
8469                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
8470                          i40e_stat_str(&pf->hw, ret),
8471                          i40e_aq_str(&pf->hw, last_aq_status));
8472                 goto bw_commit_out;
8473         }
8474         /* Write it back out unchanged to initiate update NVM,
8475          * which will force a write of the shadow (alt) RAM to
8476          * the NVM - thus storing the bandwidth values permanently.
8477          */
8478         ret = i40e_aq_update_nvm(&pf->hw,
8479                                  I40E_SR_NVM_CONTROL_WORD,
8480                                  0x10, sizeof(nvm_word),
8481                                  &nvm_word, true, NULL);
8482         /* Save off last admin queue command status before releasing
8483          * the NVM
8484          */
8485         last_aq_status = pf->hw.aq.asq_last_status;
8486         i40e_release_nvm(&pf->hw);
8487         if (ret)
8488                 dev_info(&pf->pdev->dev,
8489                          "BW settings NOT SAVED, err %s aq_err %s\n",
8490                          i40e_stat_str(&pf->hw, ret),
8491                          i40e_aq_str(&pf->hw, last_aq_status));
8492 bw_commit_out:
8493
8494         return ret;
8495 }
8496
8497 /**
8498  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
8499  * @pf: board private structure to initialize
8500  *
8501  * i40e_sw_init initializes the Adapter private data structure.
8502  * Fields are initialized based on PCI device information and
8503  * OS network device settings (MTU size).
8504  **/
8505 static int i40e_sw_init(struct i40e_pf *pf)
8506 {
8507         int err = 0;
8508         int size;
8509         u16 pow;
8510
8511         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
8512                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
8513         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
8514                 if (I40E_DEBUG_USER & debug)
8515                         pf->hw.debug_mask = debug;
8516                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
8517                                                 I40E_DEFAULT_MSG_ENABLE);
8518         }
8519
8520         /* Set default capability flags */
8521         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
8522                     I40E_FLAG_MSI_ENABLED     |
8523                     I40E_FLAG_MSIX_ENABLED;
8524
8525         /* Set default ITR */
8526         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
8527         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
8528
8529         /* Depending on PF configurations, it is possible that the RSS
8530          * maximum might end up larger than the available queues
8531          */
8532         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
8533         pf->alloc_rss_size = 1;
8534         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
8535         pf->rss_size_max = min_t(int, pf->rss_size_max,
8536                                  pf->hw.func_caps.num_tx_qp);
8537
8538         /* find the next higher power-of-2 of num cpus */
8539         pow = roundup_pow_of_two(num_online_cpus());
8540         pf->rss_size_max = min_t(int, pf->rss_size_max, pow);
8541
8542         if (pf->hw.func_caps.rss) {
8543                 pf->flags |= I40E_FLAG_RSS_ENABLED;
8544                 pf->alloc_rss_size = min_t(int, pf->rss_size_max,
8545                                            num_online_cpus());
8546         }
8547
8548         /* MFP mode enabled */
8549         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
8550                 pf->flags |= I40E_FLAG_MFP_ENABLED;
8551                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
8552                 if (i40e_get_npar_bw_setting(pf))
8553                         dev_warn(&pf->pdev->dev,
8554                                  "Could not get NPAR bw settings\n");
8555                 else
8556                         dev_info(&pf->pdev->dev,
8557                                  "Min BW = %8.8x, Max BW = %8.8x\n",
8558                                  pf->npar_min_bw, pf->npar_max_bw);
8559         }
8560
8561         /* FW/NVM is not yet fixed in this regard */
8562         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
8563             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
8564                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8565                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
8566                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
8567                     pf->hw.num_partitions > 1)
8568                         dev_info(&pf->pdev->dev,
8569                                  "Flow Director Sideband mode Disabled in MFP mode\n");
8570                 else
8571                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8572                 pf->fdir_pf_filter_count =
8573                                  pf->hw.func_caps.fd_filters_guaranteed;
8574                 pf->hw.fdir_shared_filter_count =
8575                                  pf->hw.func_caps.fd_filters_best_effort;
8576         }
8577
8578         if (i40e_is_mac_710(&pf->hw) &&
8579             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
8580             (pf->hw.aq.fw_maj_ver < 4))) {
8581                 pf->flags |= I40E_FLAG_RESTART_AUTONEG;
8582                 /* No DCB support  for FW < v4.33 */
8583                 pf->flags |= I40E_FLAG_NO_DCB_SUPPORT;
8584         }
8585
8586         /* Disable FW LLDP if FW < v4.3 */
8587         if (i40e_is_mac_710(&pf->hw) &&
8588             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
8589             (pf->hw.aq.fw_maj_ver < 4)))
8590                 pf->flags |= I40E_FLAG_STOP_FW_LLDP;
8591
8592         /* Use the FW Set LLDP MIB API if FW > v4.40 */
8593         if (i40e_is_mac_710(&pf->hw) &&
8594             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver >= 40)) ||
8595             (pf->hw.aq.fw_maj_ver >= 5)))
8596                 pf->flags |= I40E_FLAG_USE_SET_LLDP_MIB;
8597
8598         if (pf->hw.func_caps.vmdq) {
8599                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
8600                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
8601                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
8602         }
8603
8604         if (pf->hw.func_caps.iwarp) {
8605                 pf->flags |= I40E_FLAG_IWARP_ENABLED;
8606                 /* IWARP needs one extra vector for CQP just like MISC.*/
8607                 pf->num_iwarp_msix = (int)num_online_cpus() + 1;
8608         }
8609
8610 #ifdef I40E_FCOE
8611         i40e_init_pf_fcoe(pf);
8612
8613 #endif /* I40E_FCOE */
8614 #ifdef CONFIG_PCI_IOV
8615         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
8616                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
8617                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
8618                 pf->num_req_vfs = min_t(int,
8619                                         pf->hw.func_caps.num_vfs,
8620                                         I40E_MAX_VF_COUNT);
8621         }
8622 #endif /* CONFIG_PCI_IOV */
8623         if (pf->hw.mac.type == I40E_MAC_X722) {
8624                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
8625                              I40E_FLAG_128_QP_RSS_CAPABLE |
8626                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
8627                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
8628                              I40E_FLAG_WB_ON_ITR_CAPABLE |
8629                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE |
8630                              I40E_FLAG_NO_PCI_LINK_CHECK |
8631                              I40E_FLAG_USE_SET_LLDP_MIB |
8632                              I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
8633         } else if ((pf->hw.aq.api_maj_ver > 1) ||
8634                    ((pf->hw.aq.api_maj_ver == 1) &&
8635                     (pf->hw.aq.api_min_ver > 4))) {
8636                 /* Supported in FW API version higher than 1.4 */
8637                 pf->flags |= I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
8638                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8639         } else {
8640                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8641         }
8642
8643         pf->eeprom_version = 0xDEAD;
8644         pf->lan_veb = I40E_NO_VEB;
8645         pf->lan_vsi = I40E_NO_VSI;
8646
8647         /* By default FW has this off for performance reasons */
8648         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
8649
8650         /* set up queue assignment tracking */
8651         size = sizeof(struct i40e_lump_tracking)
8652                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8653         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8654         if (!pf->qp_pile) {
8655                 err = -ENOMEM;
8656                 goto sw_init_done;
8657         }
8658         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8659         pf->qp_pile->search_hint = 0;
8660
8661         pf->tx_timeout_recovery_level = 1;
8662
8663         mutex_init(&pf->switch_mutex);
8664
8665         /* If NPAR is enabled nudge the Tx scheduler */
8666         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8667                 i40e_set_npar_bw_setting(pf);
8668
8669 sw_init_done:
8670         return err;
8671 }
8672
8673 /**
8674  * i40e_set_ntuple - set the ntuple feature flag and take action
8675  * @pf: board private structure to initialize
8676  * @features: the feature set that the stack is suggesting
8677  *
8678  * returns a bool to indicate if reset needs to happen
8679  **/
8680 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8681 {
8682         bool need_reset = false;
8683
8684         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8685          * the state changed, we need to reset.
8686          */
8687         if (features & NETIF_F_NTUPLE) {
8688                 /* Enable filters and mark for reset */
8689                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8690                         need_reset = true;
8691                 /* enable FD_SB only if there is MSI-X vector */
8692                 if (pf->num_fdsb_msix > 0)
8693                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8694         } else {
8695                 /* turn off filters, mark for reset and clear SW filter list */
8696                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8697                         need_reset = true;
8698                         i40e_fdir_filter_exit(pf);
8699                 }
8700                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8701                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8702                 /* reset fd counters */
8703                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8704                 pf->fdir_pf_active_filters = 0;
8705                 /* if ATR was auto disabled it can be re-enabled. */
8706                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8707                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
8708                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8709                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
8710                                 dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8711                 }
8712         }
8713         return need_reset;
8714 }
8715
8716 /**
8717  * i40e_clear_rss_lut - clear the rx hash lookup table
8718  * @vsi: the VSI being configured
8719  **/
8720 static void i40e_clear_rss_lut(struct i40e_vsi *vsi)
8721 {
8722         struct i40e_pf *pf = vsi->back;
8723         struct i40e_hw *hw = &pf->hw;
8724         u16 vf_id = vsi->vf_id;
8725         u8 i;
8726
8727         if (vsi->type == I40E_VSI_MAIN) {
8728                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8729                         wr32(hw, I40E_PFQF_HLUT(i), 0);
8730         } else if (vsi->type == I40E_VSI_SRIOV) {
8731                 for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
8732                         i40e_write_rx_ctl(hw, I40E_VFQF_HLUT1(i, vf_id), 0);
8733         } else {
8734                 dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
8735         }
8736 }
8737
8738 /**
8739  * i40e_set_features - set the netdev feature flags
8740  * @netdev: ptr to the netdev being adjusted
8741  * @features: the feature set that the stack is suggesting
8742  **/
8743 static int i40e_set_features(struct net_device *netdev,
8744                              netdev_features_t features)
8745 {
8746         struct i40e_netdev_priv *np = netdev_priv(netdev);
8747         struct i40e_vsi *vsi = np->vsi;
8748         struct i40e_pf *pf = vsi->back;
8749         bool need_reset;
8750
8751         if (features & NETIF_F_RXHASH && !(netdev->features & NETIF_F_RXHASH))
8752                 i40e_pf_config_rss(pf);
8753         else if (!(features & NETIF_F_RXHASH) &&
8754                  netdev->features & NETIF_F_RXHASH)
8755                 i40e_clear_rss_lut(vsi);
8756
8757         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8758                 i40e_vlan_stripping_enable(vsi);
8759         else
8760                 i40e_vlan_stripping_disable(vsi);
8761
8762         need_reset = i40e_set_ntuple(pf, features);
8763
8764         if (need_reset)
8765                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8766
8767         return 0;
8768 }
8769
8770 /**
8771  * i40e_get_udp_port_idx - Lookup a possibly offloaded for Rx UDP port
8772  * @pf: board private structure
8773  * @port: The UDP port to look up
8774  *
8775  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8776  **/
8777 static u8 i40e_get_udp_port_idx(struct i40e_pf *pf, __be16 port)
8778 {
8779         u8 i;
8780
8781         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8782                 if (pf->udp_ports[i].index == port)
8783                         return i;
8784         }
8785
8786         return i;
8787 }
8788
8789 /**
8790  * i40e_udp_tunnel_add - Get notifications about UDP tunnel ports that come up
8791  * @netdev: This physical port's netdev
8792  * @ti: Tunnel endpoint information
8793  **/
8794 static void i40e_udp_tunnel_add(struct net_device *netdev,
8795                                 struct udp_tunnel_info *ti)
8796 {
8797         struct i40e_netdev_priv *np = netdev_priv(netdev);
8798         struct i40e_vsi *vsi = np->vsi;
8799         struct i40e_pf *pf = vsi->back;
8800         __be16 port = ti->port;
8801         u8 next_idx;
8802         u8 idx;
8803
8804         idx = i40e_get_udp_port_idx(pf, port);
8805
8806         /* Check if port already exists */
8807         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8808                 netdev_info(netdev, "port %d already offloaded\n",
8809                             ntohs(port));
8810                 return;
8811         }
8812
8813         /* Now check if there is space to add the new port */
8814         next_idx = i40e_get_udp_port_idx(pf, 0);
8815
8816         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8817                 netdev_info(netdev, "maximum number of offloaded UDP ports reached, not adding port %d\n",
8818                             ntohs(port));
8819                 return;
8820         }
8821
8822         switch (ti->type) {
8823         case UDP_TUNNEL_TYPE_VXLAN:
8824                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_VXLAN;
8825                 break;
8826         case UDP_TUNNEL_TYPE_GENEVE:
8827                 if (!(pf->flags & I40E_FLAG_GENEVE_OFFLOAD_CAPABLE))
8828                         return;
8829                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_NGE;
8830                 break;
8831         default:
8832                 return;
8833         }
8834
8835         /* New port: add it and mark its index in the bitmap */
8836         pf->udp_ports[next_idx].index = port;
8837         pf->pending_udp_bitmap |= BIT_ULL(next_idx);
8838         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8839 }
8840
8841 /**
8842  * i40e_udp_tunnel_del - Get notifications about UDP tunnel ports that go away
8843  * @netdev: This physical port's netdev
8844  * @ti: Tunnel endpoint information
8845  **/
8846 static void i40e_udp_tunnel_del(struct net_device *netdev,
8847                                 struct udp_tunnel_info *ti)
8848 {
8849         struct i40e_netdev_priv *np = netdev_priv(netdev);
8850         struct i40e_vsi *vsi = np->vsi;
8851         struct i40e_pf *pf = vsi->back;
8852         __be16 port = ti->port;
8853         u8 idx;
8854
8855         idx = i40e_get_udp_port_idx(pf, port);
8856
8857         /* Check if port already exists */
8858         if (idx >= I40E_MAX_PF_UDP_OFFLOAD_PORTS)
8859                 goto not_found;
8860
8861         switch (ti->type) {
8862         case UDP_TUNNEL_TYPE_VXLAN:
8863                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_VXLAN)
8864                         goto not_found;
8865                 break;
8866         case UDP_TUNNEL_TYPE_GENEVE:
8867                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_NGE)
8868                         goto not_found;
8869                 break;
8870         default:
8871                 goto not_found;
8872         }
8873
8874         /* if port exists, set it to 0 (mark for deletion)
8875          * and make it pending
8876          */
8877         pf->udp_ports[idx].index = 0;
8878         pf->pending_udp_bitmap |= BIT_ULL(idx);
8879         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8880
8881         return;
8882 not_found:
8883         netdev_warn(netdev, "UDP port %d was not found, not deleting\n",
8884                     ntohs(port));
8885 }
8886
8887 static int i40e_get_phys_port_id(struct net_device *netdev,
8888                                  struct netdev_phys_item_id *ppid)
8889 {
8890         struct i40e_netdev_priv *np = netdev_priv(netdev);
8891         struct i40e_pf *pf = np->vsi->back;
8892         struct i40e_hw *hw = &pf->hw;
8893
8894         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8895                 return -EOPNOTSUPP;
8896
8897         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8898         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8899
8900         return 0;
8901 }
8902
8903 /**
8904  * i40e_ndo_fdb_add - add an entry to the hardware database
8905  * @ndm: the input from the stack
8906  * @tb: pointer to array of nladdr (unused)
8907  * @dev: the net device pointer
8908  * @addr: the MAC address entry being added
8909  * @flags: instructions from stack about fdb operation
8910  */
8911 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8912                             struct net_device *dev,
8913                             const unsigned char *addr, u16 vid,
8914                             u16 flags)
8915 {
8916         struct i40e_netdev_priv *np = netdev_priv(dev);
8917         struct i40e_pf *pf = np->vsi->back;
8918         int err = 0;
8919
8920         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8921                 return -EOPNOTSUPP;
8922
8923         if (vid) {
8924                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8925                 return -EINVAL;
8926         }
8927
8928         /* Hardware does not support aging addresses so if a
8929          * ndm_state is given only allow permanent addresses
8930          */
8931         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8932                 netdev_info(dev, "FDB only supports static addresses\n");
8933                 return -EINVAL;
8934         }
8935
8936         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8937                 err = dev_uc_add_excl(dev, addr);
8938         else if (is_multicast_ether_addr(addr))
8939                 err = dev_mc_add_excl(dev, addr);
8940         else
8941                 err = -EINVAL;
8942
8943         /* Only return duplicate errors if NLM_F_EXCL is set */
8944         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8945                 err = 0;
8946
8947         return err;
8948 }
8949
8950 /**
8951  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8952  * @dev: the netdev being configured
8953  * @nlh: RTNL message
8954  *
8955  * Inserts a new hardware bridge if not already created and
8956  * enables the bridging mode requested (VEB or VEPA). If the
8957  * hardware bridge has already been inserted and the request
8958  * is to change the mode then that requires a PF reset to
8959  * allow rebuild of the components with required hardware
8960  * bridge mode enabled.
8961  **/
8962 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8963                                    struct nlmsghdr *nlh,
8964                                    u16 flags)
8965 {
8966         struct i40e_netdev_priv *np = netdev_priv(dev);
8967         struct i40e_vsi *vsi = np->vsi;
8968         struct i40e_pf *pf = vsi->back;
8969         struct i40e_veb *veb = NULL;
8970         struct nlattr *attr, *br_spec;
8971         int i, rem;
8972
8973         /* Only for PF VSI for now */
8974         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8975                 return -EOPNOTSUPP;
8976
8977         /* Find the HW bridge for PF VSI */
8978         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8979                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8980                         veb = pf->veb[i];
8981         }
8982
8983         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8984
8985         nla_for_each_nested(attr, br_spec, rem) {
8986                 __u16 mode;
8987
8988                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8989                         continue;
8990
8991                 mode = nla_get_u16(attr);
8992                 if ((mode != BRIDGE_MODE_VEPA) &&
8993                     (mode != BRIDGE_MODE_VEB))
8994                         return -EINVAL;
8995
8996                 /* Insert a new HW bridge */
8997                 if (!veb) {
8998                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8999                                              vsi->tc_config.enabled_tc);
9000                         if (veb) {
9001                                 veb->bridge_mode = mode;
9002                                 i40e_config_bridge_mode(veb);
9003                         } else {
9004                                 /* No Bridge HW offload available */
9005                                 return -ENOENT;
9006                         }
9007                         break;
9008                 } else if (mode != veb->bridge_mode) {
9009                         /* Existing HW bridge but different mode needs reset */
9010                         veb->bridge_mode = mode;
9011                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
9012                         if (mode == BRIDGE_MODE_VEB)
9013                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
9014                         else
9015                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9016                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
9017                         break;
9018                 }
9019         }
9020
9021         return 0;
9022 }
9023
9024 /**
9025  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
9026  * @skb: skb buff
9027  * @pid: process id
9028  * @seq: RTNL message seq #
9029  * @dev: the netdev being configured
9030  * @filter_mask: unused
9031  * @nlflags: netlink flags passed in
9032  *
9033  * Return the mode in which the hardware bridge is operating in
9034  * i.e VEB or VEPA.
9035  **/
9036 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
9037                                    struct net_device *dev,
9038                                    u32 __always_unused filter_mask,
9039                                    int nlflags)
9040 {
9041         struct i40e_netdev_priv *np = netdev_priv(dev);
9042         struct i40e_vsi *vsi = np->vsi;
9043         struct i40e_pf *pf = vsi->back;
9044         struct i40e_veb *veb = NULL;
9045         int i;
9046
9047         /* Only for PF VSI for now */
9048         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
9049                 return -EOPNOTSUPP;
9050
9051         /* Find the HW bridge for the PF VSI */
9052         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9053                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9054                         veb = pf->veb[i];
9055         }
9056
9057         if (!veb)
9058                 return 0;
9059
9060         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
9061                                        0, 0, nlflags, filter_mask, NULL);
9062 }
9063
9064 /**
9065  * i40e_features_check - Validate encapsulated packet conforms to limits
9066  * @skb: skb buff
9067  * @dev: This physical port's netdev
9068  * @features: Offload features that the stack believes apply
9069  **/
9070 static netdev_features_t i40e_features_check(struct sk_buff *skb,
9071                                              struct net_device *dev,
9072                                              netdev_features_t features)
9073 {
9074         size_t len;
9075
9076         /* No point in doing any of this if neither checksum nor GSO are
9077          * being requested for this frame.  We can rule out both by just
9078          * checking for CHECKSUM_PARTIAL
9079          */
9080         if (skb->ip_summed != CHECKSUM_PARTIAL)
9081                 return features;
9082
9083         /* We cannot support GSO if the MSS is going to be less than
9084          * 64 bytes.  If it is then we need to drop support for GSO.
9085          */
9086         if (skb_is_gso(skb) && (skb_shinfo(skb)->gso_size < 64))
9087                 features &= ~NETIF_F_GSO_MASK;
9088
9089         /* MACLEN can support at most 63 words */
9090         len = skb_network_header(skb) - skb->data;
9091         if (len & ~(63 * 2))
9092                 goto out_err;
9093
9094         /* IPLEN and EIPLEN can support at most 127 dwords */
9095         len = skb_transport_header(skb) - skb_network_header(skb);
9096         if (len & ~(127 * 4))
9097                 goto out_err;
9098
9099         if (skb->encapsulation) {
9100                 /* L4TUNLEN can support 127 words */
9101                 len = skb_inner_network_header(skb) - skb_transport_header(skb);
9102                 if (len & ~(127 * 2))
9103                         goto out_err;
9104
9105                 /* IPLEN can support at most 127 dwords */
9106                 len = skb_inner_transport_header(skb) -
9107                       skb_inner_network_header(skb);
9108                 if (len & ~(127 * 4))
9109                         goto out_err;
9110         }
9111
9112         /* No need to validate L4LEN as TCP is the only protocol with a
9113          * a flexible value and we support all possible values supported
9114          * by TCP, which is at most 15 dwords
9115          */
9116
9117         return features;
9118 out_err:
9119         return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
9120 }
9121
9122 static const struct net_device_ops i40e_netdev_ops = {
9123         .ndo_open               = i40e_open,
9124         .ndo_stop               = i40e_close,
9125         .ndo_start_xmit         = i40e_lan_xmit_frame,
9126         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
9127         .ndo_set_rx_mode        = i40e_set_rx_mode,
9128         .ndo_validate_addr      = eth_validate_addr,
9129         .ndo_set_mac_address    = i40e_set_mac,
9130         .ndo_change_mtu         = i40e_change_mtu,
9131         .ndo_do_ioctl           = i40e_ioctl,
9132         .ndo_tx_timeout         = i40e_tx_timeout,
9133         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
9134         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
9135 #ifdef CONFIG_NET_POLL_CONTROLLER
9136         .ndo_poll_controller    = i40e_netpoll,
9137 #endif
9138         .ndo_setup_tc           = __i40e_setup_tc,
9139 #ifdef I40E_FCOE
9140         .ndo_fcoe_enable        = i40e_fcoe_enable,
9141         .ndo_fcoe_disable       = i40e_fcoe_disable,
9142 #endif
9143         .ndo_set_features       = i40e_set_features,
9144         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
9145         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
9146         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
9147         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
9148         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
9149         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
9150         .ndo_set_vf_trust       = i40e_ndo_set_vf_trust,
9151         .ndo_udp_tunnel_add     = i40e_udp_tunnel_add,
9152         .ndo_udp_tunnel_del     = i40e_udp_tunnel_del,
9153         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
9154         .ndo_fdb_add            = i40e_ndo_fdb_add,
9155         .ndo_features_check     = i40e_features_check,
9156         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
9157         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
9158 };
9159
9160 /**
9161  * i40e_config_netdev - Setup the netdev flags
9162  * @vsi: the VSI being configured
9163  *
9164  * Returns 0 on success, negative value on failure
9165  **/
9166 static int i40e_config_netdev(struct i40e_vsi *vsi)
9167 {
9168         struct i40e_pf *pf = vsi->back;
9169         struct i40e_hw *hw = &pf->hw;
9170         struct i40e_netdev_priv *np;
9171         struct net_device *netdev;
9172         u8 mac_addr[ETH_ALEN];
9173         int etherdev_size;
9174
9175         etherdev_size = sizeof(struct i40e_netdev_priv);
9176         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
9177         if (!netdev)
9178                 return -ENOMEM;
9179
9180         vsi->netdev = netdev;
9181         np = netdev_priv(netdev);
9182         np->vsi = vsi;
9183
9184         netdev->hw_enc_features |= NETIF_F_SG                   |
9185                                    NETIF_F_IP_CSUM              |
9186                                    NETIF_F_IPV6_CSUM            |
9187                                    NETIF_F_HIGHDMA              |
9188                                    NETIF_F_SOFT_FEATURES        |
9189                                    NETIF_F_TSO                  |
9190                                    NETIF_F_TSO_ECN              |
9191                                    NETIF_F_TSO6                 |
9192                                    NETIF_F_GSO_GRE              |
9193                                    NETIF_F_GSO_GRE_CSUM         |
9194                                    NETIF_F_GSO_IPXIP4           |
9195                                    NETIF_F_GSO_IPXIP6           |
9196                                    NETIF_F_GSO_UDP_TUNNEL       |
9197                                    NETIF_F_GSO_UDP_TUNNEL_CSUM  |
9198                                    NETIF_F_GSO_PARTIAL          |
9199                                    NETIF_F_SCTP_CRC             |
9200                                    NETIF_F_RXHASH               |
9201                                    NETIF_F_RXCSUM               |
9202                                    0;
9203
9204         if (!(pf->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE))
9205                 netdev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
9206
9207         netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
9208
9209         /* record features VLANs can make use of */
9210         netdev->vlan_features |= netdev->hw_enc_features |
9211                                  NETIF_F_TSO_MANGLEID;
9212
9213         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
9214                 netdev->hw_features |= NETIF_F_NTUPLE;
9215
9216         netdev->hw_features |= netdev->hw_enc_features  |
9217                                NETIF_F_HW_VLAN_CTAG_TX  |
9218                                NETIF_F_HW_VLAN_CTAG_RX;
9219
9220         netdev->features |= netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
9221         netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
9222
9223         if (vsi->type == I40E_VSI_MAIN) {
9224                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
9225                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
9226                 /* The following steps are necessary to prevent reception
9227                  * of tagged packets - some older NVM configurations load a
9228                  * default a MAC-VLAN filter that accepts any tagged packet
9229                  * which must be replaced by a normal filter.
9230                  */
9231                 i40e_rm_default_mac_filter(vsi, mac_addr);
9232                 spin_lock_bh(&vsi->mac_filter_list_lock);
9233                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, true);
9234                 spin_unlock_bh(&vsi->mac_filter_list_lock);
9235         } else {
9236                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
9237                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
9238                          pf->vsi[pf->lan_vsi]->netdev->name);
9239                 random_ether_addr(mac_addr);
9240
9241                 spin_lock_bh(&vsi->mac_filter_list_lock);
9242                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
9243                 spin_unlock_bh(&vsi->mac_filter_list_lock);
9244         }
9245
9246         ether_addr_copy(netdev->dev_addr, mac_addr);
9247         ether_addr_copy(netdev->perm_addr, mac_addr);
9248
9249         /* i40iw_net_event() reads 16 bytes from neigh->primary_key */
9250         netdev->neigh_priv_len = sizeof(u32) * 4;
9251
9252         netdev->priv_flags |= IFF_UNICAST_FLT;
9253         netdev->priv_flags |= IFF_SUPP_NOFCS;
9254         /* Setup netdev TC information */
9255         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
9256
9257         netdev->netdev_ops = &i40e_netdev_ops;
9258         netdev->watchdog_timeo = 5 * HZ;
9259         i40e_set_ethtool_ops(netdev);
9260 #ifdef I40E_FCOE
9261         i40e_fcoe_config_netdev(netdev, vsi);
9262 #endif
9263
9264         return 0;
9265 }
9266
9267 /**
9268  * i40e_vsi_delete - Delete a VSI from the switch
9269  * @vsi: the VSI being removed
9270  *
9271  * Returns 0 on success, negative value on failure
9272  **/
9273 static void i40e_vsi_delete(struct i40e_vsi *vsi)
9274 {
9275         /* remove default VSI is not allowed */
9276         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
9277                 return;
9278
9279         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
9280 }
9281
9282 /**
9283  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
9284  * @vsi: the VSI being queried
9285  *
9286  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
9287  **/
9288 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
9289 {
9290         struct i40e_veb *veb;
9291         struct i40e_pf *pf = vsi->back;
9292
9293         /* Uplink is not a bridge so default to VEB */
9294         if (vsi->veb_idx == I40E_NO_VEB)
9295                 return 1;
9296
9297         veb = pf->veb[vsi->veb_idx];
9298         if (!veb) {
9299                 dev_info(&pf->pdev->dev,
9300                          "There is no veb associated with the bridge\n");
9301                 return -ENOENT;
9302         }
9303
9304         /* Uplink is a bridge in VEPA mode */
9305         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
9306                 return 0;
9307         } else {
9308                 /* Uplink is a bridge in VEB mode */
9309                 return 1;
9310         }
9311
9312         /* VEPA is now default bridge, so return 0 */
9313         return 0;
9314 }
9315
9316 /**
9317  * i40e_add_vsi - Add a VSI to the switch
9318  * @vsi: the VSI being configured
9319  *
9320  * This initializes a VSI context depending on the VSI type to be added and
9321  * passes it down to the add_vsi aq command.
9322  **/
9323 static int i40e_add_vsi(struct i40e_vsi *vsi)
9324 {
9325         int ret = -ENODEV;
9326         i40e_status aq_ret = 0;
9327         struct i40e_pf *pf = vsi->back;
9328         struct i40e_hw *hw = &pf->hw;
9329         struct i40e_vsi_context ctxt;
9330         struct i40e_mac_filter *f, *ftmp;
9331
9332         u8 enabled_tc = 0x1; /* TC0 enabled */
9333         int f_count = 0;
9334
9335         memset(&ctxt, 0, sizeof(ctxt));
9336         switch (vsi->type) {
9337         case I40E_VSI_MAIN:
9338                 /* The PF's main VSI is already setup as part of the
9339                  * device initialization, so we'll not bother with
9340                  * the add_vsi call, but we will retrieve the current
9341                  * VSI context.
9342                  */
9343                 ctxt.seid = pf->main_vsi_seid;
9344                 ctxt.pf_num = pf->hw.pf_id;
9345                 ctxt.vf_num = 0;
9346                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
9347                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9348                 if (ret) {
9349                         dev_info(&pf->pdev->dev,
9350                                  "couldn't get PF vsi config, err %s aq_err %s\n",
9351                                  i40e_stat_str(&pf->hw, ret),
9352                                  i40e_aq_str(&pf->hw,
9353                                              pf->hw.aq.asq_last_status));
9354                         return -ENOENT;
9355                 }
9356                 vsi->info = ctxt.info;
9357                 vsi->info.valid_sections = 0;
9358
9359                 vsi->seid = ctxt.seid;
9360                 vsi->id = ctxt.vsi_number;
9361
9362                 enabled_tc = i40e_pf_get_tc_map(pf);
9363
9364                 /* MFP mode setup queue map and update VSI */
9365                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
9366                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
9367                         memset(&ctxt, 0, sizeof(ctxt));
9368                         ctxt.seid = pf->main_vsi_seid;
9369                         ctxt.pf_num = pf->hw.pf_id;
9370                         ctxt.vf_num = 0;
9371                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
9372                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
9373                         if (ret) {
9374                                 dev_info(&pf->pdev->dev,
9375                                          "update vsi failed, err %s aq_err %s\n",
9376                                          i40e_stat_str(&pf->hw, ret),
9377                                          i40e_aq_str(&pf->hw,
9378                                                     pf->hw.aq.asq_last_status));
9379                                 ret = -ENOENT;
9380                                 goto err;
9381                         }
9382                         /* update the local VSI info queue map */
9383                         i40e_vsi_update_queue_map(vsi, &ctxt);
9384                         vsi->info.valid_sections = 0;
9385                 } else {
9386                         /* Default/Main VSI is only enabled for TC0
9387                          * reconfigure it to enable all TCs that are
9388                          * available on the port in SFP mode.
9389                          * For MFP case the iSCSI PF would use this
9390                          * flow to enable LAN+iSCSI TC.
9391                          */
9392                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
9393                         if (ret) {
9394                                 dev_info(&pf->pdev->dev,
9395                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
9396                                          enabled_tc,
9397                                          i40e_stat_str(&pf->hw, ret),
9398                                          i40e_aq_str(&pf->hw,
9399                                                     pf->hw.aq.asq_last_status));
9400                                 ret = -ENOENT;
9401                         }
9402                 }
9403                 break;
9404
9405         case I40E_VSI_FDIR:
9406                 ctxt.pf_num = hw->pf_id;
9407                 ctxt.vf_num = 0;
9408                 ctxt.uplink_seid = vsi->uplink_seid;
9409                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9410                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9411                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
9412                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
9413                         ctxt.info.valid_sections |=
9414                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9415                         ctxt.info.switch_id =
9416                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9417                 }
9418                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9419                 break;
9420
9421         case I40E_VSI_VMDQ2:
9422                 ctxt.pf_num = hw->pf_id;
9423                 ctxt.vf_num = 0;
9424                 ctxt.uplink_seid = vsi->uplink_seid;
9425                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9426                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
9427
9428                 /* This VSI is connected to VEB so the switch_id
9429                  * should be set to zero by default.
9430                  */
9431                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9432                         ctxt.info.valid_sections |=
9433                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9434                         ctxt.info.switch_id =
9435                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9436                 }
9437
9438                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9439                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9440                 break;
9441
9442         case I40E_VSI_SRIOV:
9443                 ctxt.pf_num = hw->pf_id;
9444                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
9445                 ctxt.uplink_seid = vsi->uplink_seid;
9446                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9447                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
9448
9449                 /* This VSI is connected to VEB so the switch_id
9450                  * should be set to zero by default.
9451                  */
9452                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9453                         ctxt.info.valid_sections |=
9454                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9455                         ctxt.info.switch_id =
9456                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9457                 }
9458
9459                 if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
9460                         ctxt.info.valid_sections |=
9461                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
9462                         ctxt.info.queueing_opt_flags |=
9463                                 (I40E_AQ_VSI_QUE_OPT_TCP_ENA |
9464                                  I40E_AQ_VSI_QUE_OPT_RSS_LUT_VSI);
9465                 }
9466
9467                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
9468                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
9469                 if (pf->vf[vsi->vf_id].spoofchk) {
9470                         ctxt.info.valid_sections |=
9471                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
9472                         ctxt.info.sec_flags |=
9473                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
9474                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
9475                 }
9476                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9477                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9478                 break;
9479
9480 #ifdef I40E_FCOE
9481         case I40E_VSI_FCOE:
9482                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
9483                 if (ret) {
9484                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
9485                         return ret;
9486                 }
9487                 break;
9488
9489 #endif /* I40E_FCOE */
9490         case I40E_VSI_IWARP:
9491                 /* send down message to iWARP */
9492                 break;
9493
9494         default:
9495                 return -ENODEV;
9496         }
9497
9498         if (vsi->type != I40E_VSI_MAIN) {
9499                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
9500                 if (ret) {
9501                         dev_info(&vsi->back->pdev->dev,
9502                                  "add vsi failed, err %s aq_err %s\n",
9503                                  i40e_stat_str(&pf->hw, ret),
9504                                  i40e_aq_str(&pf->hw,
9505                                              pf->hw.aq.asq_last_status));
9506                         ret = -ENOENT;
9507                         goto err;
9508                 }
9509                 vsi->info = ctxt.info;
9510                 vsi->info.valid_sections = 0;
9511                 vsi->seid = ctxt.seid;
9512                 vsi->id = ctxt.vsi_number;
9513         }
9514         /* Except FDIR VSI, for all othet VSI set the broadcast filter */
9515         if (vsi->type != I40E_VSI_FDIR) {
9516                 aq_ret = i40e_aq_set_vsi_broadcast(hw, vsi->seid, true, NULL);
9517                 if (aq_ret) {
9518                         ret = i40e_aq_rc_to_posix(aq_ret,
9519                                                   hw->aq.asq_last_status);
9520                         dev_info(&pf->pdev->dev,
9521                                  "set brdcast promisc failed, err %s, aq_err %s\n",
9522                                  i40e_stat_str(hw, aq_ret),
9523                                  i40e_aq_str(hw, hw->aq.asq_last_status));
9524                 }
9525         }
9526
9527         vsi->active_filters = 0;
9528         clear_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
9529         spin_lock_bh(&vsi->mac_filter_list_lock);
9530         /* If macvlan filters already exist, force them to get loaded */
9531         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
9532                 f->state = I40E_FILTER_NEW;
9533                 f_count++;
9534         }
9535         spin_unlock_bh(&vsi->mac_filter_list_lock);
9536
9537         if (f_count) {
9538                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
9539                 pf->flags |= I40E_FLAG_FILTER_SYNC;
9540         }
9541
9542         /* Update VSI BW information */
9543         ret = i40e_vsi_get_bw_info(vsi);
9544         if (ret) {
9545                 dev_info(&pf->pdev->dev,
9546                          "couldn't get vsi bw info, err %s aq_err %s\n",
9547                          i40e_stat_str(&pf->hw, ret),
9548                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9549                 /* VSI is already added so not tearing that up */
9550                 ret = 0;
9551         }
9552
9553 err:
9554         return ret;
9555 }
9556
9557 /**
9558  * i40e_vsi_release - Delete a VSI and free its resources
9559  * @vsi: the VSI being removed
9560  *
9561  * Returns 0 on success or < 0 on error
9562  **/
9563 int i40e_vsi_release(struct i40e_vsi *vsi)
9564 {
9565         struct i40e_mac_filter *f, *ftmp;
9566         struct i40e_veb *veb = NULL;
9567         struct i40e_pf *pf;
9568         u16 uplink_seid;
9569         int i, n;
9570
9571         pf = vsi->back;
9572
9573         /* release of a VEB-owner or last VSI is not allowed */
9574         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
9575                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
9576                          vsi->seid, vsi->uplink_seid);
9577                 return -ENODEV;
9578         }
9579         if (vsi == pf->vsi[pf->lan_vsi] &&
9580             !test_bit(__I40E_DOWN, &pf->state)) {
9581                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
9582                 return -ENODEV;
9583         }
9584
9585         uplink_seid = vsi->uplink_seid;
9586         if (vsi->type != I40E_VSI_SRIOV) {
9587                 if (vsi->netdev_registered) {
9588                         vsi->netdev_registered = false;
9589                         if (vsi->netdev) {
9590                                 /* results in a call to i40e_close() */
9591                                 unregister_netdev(vsi->netdev);
9592                         }
9593                 } else {
9594                         i40e_vsi_close(vsi);
9595                 }
9596                 i40e_vsi_disable_irq(vsi);
9597         }
9598
9599         spin_lock_bh(&vsi->mac_filter_list_lock);
9600         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
9601                 i40e_del_filter(vsi, f->macaddr, f->vlan,
9602                                 f->is_vf, f->is_netdev);
9603         spin_unlock_bh(&vsi->mac_filter_list_lock);
9604
9605         i40e_sync_vsi_filters(vsi);
9606
9607         i40e_vsi_delete(vsi);
9608         i40e_vsi_free_q_vectors(vsi);
9609         if (vsi->netdev) {
9610                 free_netdev(vsi->netdev);
9611                 vsi->netdev = NULL;
9612         }
9613         i40e_vsi_clear_rings(vsi);
9614         i40e_vsi_clear(vsi);
9615
9616         /* If this was the last thing on the VEB, except for the
9617          * controlling VSI, remove the VEB, which puts the controlling
9618          * VSI onto the next level down in the switch.
9619          *
9620          * Well, okay, there's one more exception here: don't remove
9621          * the orphan VEBs yet.  We'll wait for an explicit remove request
9622          * from up the network stack.
9623          */
9624         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
9625                 if (pf->vsi[i] &&
9626                     pf->vsi[i]->uplink_seid == uplink_seid &&
9627                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9628                         n++;      /* count the VSIs */
9629                 }
9630         }
9631         for (i = 0; i < I40E_MAX_VEB; i++) {
9632                 if (!pf->veb[i])
9633                         continue;
9634                 if (pf->veb[i]->uplink_seid == uplink_seid)
9635                         n++;     /* count the VEBs */
9636                 if (pf->veb[i]->seid == uplink_seid)
9637                         veb = pf->veb[i];
9638         }
9639         if (n == 0 && veb && veb->uplink_seid != 0)
9640                 i40e_veb_release(veb);
9641
9642         return 0;
9643 }
9644
9645 /**
9646  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
9647  * @vsi: ptr to the VSI
9648  *
9649  * This should only be called after i40e_vsi_mem_alloc() which allocates the
9650  * corresponding SW VSI structure and initializes num_queue_pairs for the
9651  * newly allocated VSI.
9652  *
9653  * Returns 0 on success or negative on failure
9654  **/
9655 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
9656 {
9657         int ret = -ENOENT;
9658         struct i40e_pf *pf = vsi->back;
9659
9660         if (vsi->q_vectors[0]) {
9661                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
9662                          vsi->seid);
9663                 return -EEXIST;
9664         }
9665
9666         if (vsi->base_vector) {
9667                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
9668                          vsi->seid, vsi->base_vector);
9669                 return -EEXIST;
9670         }
9671
9672         ret = i40e_vsi_alloc_q_vectors(vsi);
9673         if (ret) {
9674                 dev_info(&pf->pdev->dev,
9675                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
9676                          vsi->num_q_vectors, vsi->seid, ret);
9677                 vsi->num_q_vectors = 0;
9678                 goto vector_setup_out;
9679         }
9680
9681         /* In Legacy mode, we do not have to get any other vector since we
9682          * piggyback on the misc/ICR0 for queue interrupts.
9683         */
9684         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
9685                 return ret;
9686         if (vsi->num_q_vectors)
9687                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
9688                                                  vsi->num_q_vectors, vsi->idx);
9689         if (vsi->base_vector < 0) {
9690                 dev_info(&pf->pdev->dev,
9691                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
9692                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
9693                 i40e_vsi_free_q_vectors(vsi);
9694                 ret = -ENOENT;
9695                 goto vector_setup_out;
9696         }
9697
9698 vector_setup_out:
9699         return ret;
9700 }
9701
9702 /**
9703  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
9704  * @vsi: pointer to the vsi.
9705  *
9706  * This re-allocates a vsi's queue resources.
9707  *
9708  * Returns pointer to the successfully allocated and configured VSI sw struct
9709  * on success, otherwise returns NULL on failure.
9710  **/
9711 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
9712 {
9713         struct i40e_pf *pf;
9714         u8 enabled_tc;
9715         int ret;
9716
9717         if (!vsi)
9718                 return NULL;
9719
9720         pf = vsi->back;
9721
9722         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
9723         i40e_vsi_clear_rings(vsi);
9724
9725         i40e_vsi_free_arrays(vsi, false);
9726         i40e_set_num_rings_in_vsi(vsi);
9727         ret = i40e_vsi_alloc_arrays(vsi, false);
9728         if (ret)
9729                 goto err_vsi;
9730
9731         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
9732         if (ret < 0) {
9733                 dev_info(&pf->pdev->dev,
9734                          "failed to get tracking for %d queues for VSI %d err %d\n",
9735                          vsi->alloc_queue_pairs, vsi->seid, ret);
9736                 goto err_vsi;
9737         }
9738         vsi->base_queue = ret;
9739
9740         /* Update the FW view of the VSI. Force a reset of TC and queue
9741          * layout configurations.
9742          */
9743         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9744         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9745         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9746         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9747         if (vsi->type == I40E_VSI_MAIN)
9748                 i40e_rm_default_mac_filter(vsi, pf->hw.mac.perm_addr);
9749
9750         /* assign it some queues */
9751         ret = i40e_alloc_rings(vsi);
9752         if (ret)
9753                 goto err_rings;
9754
9755         /* map all of the rings to the q_vectors */
9756         i40e_vsi_map_rings_to_vectors(vsi);
9757         return vsi;
9758
9759 err_rings:
9760         i40e_vsi_free_q_vectors(vsi);
9761         if (vsi->netdev_registered) {
9762                 vsi->netdev_registered = false;
9763                 unregister_netdev(vsi->netdev);
9764                 free_netdev(vsi->netdev);
9765                 vsi->netdev = NULL;
9766         }
9767         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9768 err_vsi:
9769         i40e_vsi_clear(vsi);
9770         return NULL;
9771 }
9772
9773 /**
9774  * i40e_vsi_setup - Set up a VSI by a given type
9775  * @pf: board private structure
9776  * @type: VSI type
9777  * @uplink_seid: the switch element to link to
9778  * @param1: usage depends upon VSI type. For VF types, indicates VF id
9779  *
9780  * This allocates the sw VSI structure and its queue resources, then add a VSI
9781  * to the identified VEB.
9782  *
9783  * Returns pointer to the successfully allocated and configure VSI sw struct on
9784  * success, otherwise returns NULL on failure.
9785  **/
9786 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9787                                 u16 uplink_seid, u32 param1)
9788 {
9789         struct i40e_vsi *vsi = NULL;
9790         struct i40e_veb *veb = NULL;
9791         int ret, i;
9792         int v_idx;
9793
9794         /* The requested uplink_seid must be either
9795          *     - the PF's port seid
9796          *              no VEB is needed because this is the PF
9797          *              or this is a Flow Director special case VSI
9798          *     - seid of an existing VEB
9799          *     - seid of a VSI that owns an existing VEB
9800          *     - seid of a VSI that doesn't own a VEB
9801          *              a new VEB is created and the VSI becomes the owner
9802          *     - seid of the PF VSI, which is what creates the first VEB
9803          *              this is a special case of the previous
9804          *
9805          * Find which uplink_seid we were given and create a new VEB if needed
9806          */
9807         for (i = 0; i < I40E_MAX_VEB; i++) {
9808                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9809                         veb = pf->veb[i];
9810                         break;
9811                 }
9812         }
9813
9814         if (!veb && uplink_seid != pf->mac_seid) {
9815
9816                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9817                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9818                                 vsi = pf->vsi[i];
9819                                 break;
9820                         }
9821                 }
9822                 if (!vsi) {
9823                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9824                                  uplink_seid);
9825                         return NULL;
9826                 }
9827
9828                 if (vsi->uplink_seid == pf->mac_seid)
9829                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9830                                              vsi->tc_config.enabled_tc);
9831                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9832                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9833                                              vsi->tc_config.enabled_tc);
9834                 if (veb) {
9835                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9836                                 dev_info(&vsi->back->pdev->dev,
9837                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9838                                 return NULL;
9839                         }
9840                         /* We come up by default in VEPA mode if SRIOV is not
9841                          * already enabled, in which case we can't force VEPA
9842                          * mode.
9843                          */
9844                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9845                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9846                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9847                         }
9848                         i40e_config_bridge_mode(veb);
9849                 }
9850                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9851                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9852                                 veb = pf->veb[i];
9853                 }
9854                 if (!veb) {
9855                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9856                         return NULL;
9857                 }
9858
9859                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9860                 uplink_seid = veb->seid;
9861         }
9862
9863         /* get vsi sw struct */
9864         v_idx = i40e_vsi_mem_alloc(pf, type);
9865         if (v_idx < 0)
9866                 goto err_alloc;
9867         vsi = pf->vsi[v_idx];
9868         if (!vsi)
9869                 goto err_alloc;
9870         vsi->type = type;
9871         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9872
9873         if (type == I40E_VSI_MAIN)
9874                 pf->lan_vsi = v_idx;
9875         else if (type == I40E_VSI_SRIOV)
9876                 vsi->vf_id = param1;
9877         /* assign it some queues */
9878         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9879                                 vsi->idx);
9880         if (ret < 0) {
9881                 dev_info(&pf->pdev->dev,
9882                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9883                          vsi->alloc_queue_pairs, vsi->seid, ret);
9884                 goto err_vsi;
9885         }
9886         vsi->base_queue = ret;
9887
9888         /* get a VSI from the hardware */
9889         vsi->uplink_seid = uplink_seid;
9890         ret = i40e_add_vsi(vsi);
9891         if (ret)
9892                 goto err_vsi;
9893
9894         switch (vsi->type) {
9895         /* setup the netdev if needed */
9896         case I40E_VSI_MAIN:
9897                 /* Apply relevant filters if a platform-specific mac
9898                  * address was selected.
9899                  */
9900                 if (!!(pf->flags & I40E_FLAG_PF_MAC)) {
9901                         ret = i40e_macaddr_init(vsi, pf->hw.mac.addr);
9902                         if (ret) {
9903                                 dev_warn(&pf->pdev->dev,
9904                                          "could not set up macaddr; err %d\n",
9905                                          ret);
9906                         }
9907                 }
9908         case I40E_VSI_VMDQ2:
9909         case I40E_VSI_FCOE:
9910                 ret = i40e_config_netdev(vsi);
9911                 if (ret)
9912                         goto err_netdev;
9913                 ret = register_netdev(vsi->netdev);
9914                 if (ret)
9915                         goto err_netdev;
9916                 vsi->netdev_registered = true;
9917                 netif_carrier_off(vsi->netdev);
9918 #ifdef CONFIG_I40E_DCB
9919                 /* Setup DCB netlink interface */
9920                 i40e_dcbnl_setup(vsi);
9921 #endif /* CONFIG_I40E_DCB */
9922                 /* fall through */
9923
9924         case I40E_VSI_FDIR:
9925                 /* set up vectors and rings if needed */
9926                 ret = i40e_vsi_setup_vectors(vsi);
9927                 if (ret)
9928                         goto err_msix;
9929
9930                 ret = i40e_alloc_rings(vsi);
9931                 if (ret)
9932                         goto err_rings;
9933
9934                 /* map all of the rings to the q_vectors */
9935                 i40e_vsi_map_rings_to_vectors(vsi);
9936
9937                 i40e_vsi_reset_stats(vsi);
9938                 break;
9939
9940         default:
9941                 /* no netdev or rings for the other VSI types */
9942                 break;
9943         }
9944
9945         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9946             (vsi->type == I40E_VSI_VMDQ2)) {
9947                 ret = i40e_vsi_config_rss(vsi);
9948         }
9949         return vsi;
9950
9951 err_rings:
9952         i40e_vsi_free_q_vectors(vsi);
9953 err_msix:
9954         if (vsi->netdev_registered) {
9955                 vsi->netdev_registered = false;
9956                 unregister_netdev(vsi->netdev);
9957                 free_netdev(vsi->netdev);
9958                 vsi->netdev = NULL;
9959         }
9960 err_netdev:
9961         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9962 err_vsi:
9963         i40e_vsi_clear(vsi);
9964 err_alloc:
9965         return NULL;
9966 }
9967
9968 /**
9969  * i40e_veb_get_bw_info - Query VEB BW information
9970  * @veb: the veb to query
9971  *
9972  * Query the Tx scheduler BW configuration data for given VEB
9973  **/
9974 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9975 {
9976         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9977         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9978         struct i40e_pf *pf = veb->pf;
9979         struct i40e_hw *hw = &pf->hw;
9980         u32 tc_bw_max;
9981         int ret = 0;
9982         int i;
9983
9984         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9985                                                   &bw_data, NULL);
9986         if (ret) {
9987                 dev_info(&pf->pdev->dev,
9988                          "query veb bw config failed, err %s aq_err %s\n",
9989                          i40e_stat_str(&pf->hw, ret),
9990                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9991                 goto out;
9992         }
9993
9994         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9995                                                    &ets_data, NULL);
9996         if (ret) {
9997                 dev_info(&pf->pdev->dev,
9998                          "query veb bw ets config failed, err %s aq_err %s\n",
9999                          i40e_stat_str(&pf->hw, ret),
10000                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
10001                 goto out;
10002         }
10003
10004         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
10005         veb->bw_max_quanta = ets_data.tc_bw_max;
10006         veb->is_abs_credits = bw_data.absolute_credits_enable;
10007         veb->enabled_tc = ets_data.tc_valid_bits;
10008         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
10009                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
10010         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
10011                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
10012                 veb->bw_tc_limit_credits[i] =
10013                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
10014                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
10015         }
10016
10017 out:
10018         return ret;
10019 }
10020
10021 /**
10022  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
10023  * @pf: board private structure
10024  *
10025  * On error: returns error code (negative)
10026  * On success: returns vsi index in PF (positive)
10027  **/
10028 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
10029 {
10030         int ret = -ENOENT;
10031         struct i40e_veb *veb;
10032         int i;
10033
10034         /* Need to protect the allocation of switch elements at the PF level */
10035         mutex_lock(&pf->switch_mutex);
10036
10037         /* VEB list may be fragmented if VEB creation/destruction has
10038          * been happening.  We can afford to do a quick scan to look
10039          * for any free slots in the list.
10040          *
10041          * find next empty veb slot, looping back around if necessary
10042          */
10043         i = 0;
10044         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
10045                 i++;
10046         if (i >= I40E_MAX_VEB) {
10047                 ret = -ENOMEM;
10048                 goto err_alloc_veb;  /* out of VEB slots! */
10049         }
10050
10051         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
10052         if (!veb) {
10053                 ret = -ENOMEM;
10054                 goto err_alloc_veb;
10055         }
10056         veb->pf = pf;
10057         veb->idx = i;
10058         veb->enabled_tc = 1;
10059
10060         pf->veb[i] = veb;
10061         ret = i;
10062 err_alloc_veb:
10063         mutex_unlock(&pf->switch_mutex);
10064         return ret;
10065 }
10066
10067 /**
10068  * i40e_switch_branch_release - Delete a branch of the switch tree
10069  * @branch: where to start deleting
10070  *
10071  * This uses recursion to find the tips of the branch to be
10072  * removed, deleting until we get back to and can delete this VEB.
10073  **/
10074 static void i40e_switch_branch_release(struct i40e_veb *branch)
10075 {
10076         struct i40e_pf *pf = branch->pf;
10077         u16 branch_seid = branch->seid;
10078         u16 veb_idx = branch->idx;
10079         int i;
10080
10081         /* release any VEBs on this VEB - RECURSION */
10082         for (i = 0; i < I40E_MAX_VEB; i++) {
10083                 if (!pf->veb[i])
10084                         continue;
10085                 if (pf->veb[i]->uplink_seid == branch->seid)
10086                         i40e_switch_branch_release(pf->veb[i]);
10087         }
10088
10089         /* Release the VSIs on this VEB, but not the owner VSI.
10090          *
10091          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
10092          *       the VEB itself, so don't use (*branch) after this loop.
10093          */
10094         for (i = 0; i < pf->num_alloc_vsi; i++) {
10095                 if (!pf->vsi[i])
10096                         continue;
10097                 if (pf->vsi[i]->uplink_seid == branch_seid &&
10098                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
10099                         i40e_vsi_release(pf->vsi[i]);
10100                 }
10101         }
10102
10103         /* There's one corner case where the VEB might not have been
10104          * removed, so double check it here and remove it if needed.
10105          * This case happens if the veb was created from the debugfs
10106          * commands and no VSIs were added to it.
10107          */
10108         if (pf->veb[veb_idx])
10109                 i40e_veb_release(pf->veb[veb_idx]);
10110 }
10111
10112 /**
10113  * i40e_veb_clear - remove veb struct
10114  * @veb: the veb to remove
10115  **/
10116 static void i40e_veb_clear(struct i40e_veb *veb)
10117 {
10118         if (!veb)
10119                 return;
10120
10121         if (veb->pf) {
10122                 struct i40e_pf *pf = veb->pf;
10123
10124                 mutex_lock(&pf->switch_mutex);
10125                 if (pf->veb[veb->idx] == veb)
10126                         pf->veb[veb->idx] = NULL;
10127                 mutex_unlock(&pf->switch_mutex);
10128         }
10129
10130         kfree(veb);
10131 }
10132
10133 /**
10134  * i40e_veb_release - Delete a VEB and free its resources
10135  * @veb: the VEB being removed
10136  **/
10137 void i40e_veb_release(struct i40e_veb *veb)
10138 {
10139         struct i40e_vsi *vsi = NULL;
10140         struct i40e_pf *pf;
10141         int i, n = 0;
10142
10143         pf = veb->pf;
10144
10145         /* find the remaining VSI and check for extras */
10146         for (i = 0; i < pf->num_alloc_vsi; i++) {
10147                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
10148                         n++;
10149                         vsi = pf->vsi[i];
10150                 }
10151         }
10152         if (n != 1) {
10153                 dev_info(&pf->pdev->dev,
10154                          "can't remove VEB %d with %d VSIs left\n",
10155                          veb->seid, n);
10156                 return;
10157         }
10158
10159         /* move the remaining VSI to uplink veb */
10160         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
10161         if (veb->uplink_seid) {
10162                 vsi->uplink_seid = veb->uplink_seid;
10163                 if (veb->uplink_seid == pf->mac_seid)
10164                         vsi->veb_idx = I40E_NO_VEB;
10165                 else
10166                         vsi->veb_idx = veb->veb_idx;
10167         } else {
10168                 /* floating VEB */
10169                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
10170                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
10171         }
10172
10173         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10174         i40e_veb_clear(veb);
10175 }
10176
10177 /**
10178  * i40e_add_veb - create the VEB in the switch
10179  * @veb: the VEB to be instantiated
10180  * @vsi: the controlling VSI
10181  **/
10182 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
10183 {
10184         struct i40e_pf *pf = veb->pf;
10185         bool enable_stats = !!(pf->flags & I40E_FLAG_VEB_STATS_ENABLED);
10186         int ret;
10187
10188         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
10189                               veb->enabled_tc, false,
10190                               &veb->seid, enable_stats, NULL);
10191
10192         /* get a VEB from the hardware */
10193         if (ret) {
10194                 dev_info(&pf->pdev->dev,
10195                          "couldn't add VEB, err %s aq_err %s\n",
10196                          i40e_stat_str(&pf->hw, ret),
10197                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10198                 return -EPERM;
10199         }
10200
10201         /* get statistics counter */
10202         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
10203                                          &veb->stats_idx, NULL, NULL, NULL);
10204         if (ret) {
10205                 dev_info(&pf->pdev->dev,
10206                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
10207                          i40e_stat_str(&pf->hw, ret),
10208                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10209                 return -EPERM;
10210         }
10211         ret = i40e_veb_get_bw_info(veb);
10212         if (ret) {
10213                 dev_info(&pf->pdev->dev,
10214                          "couldn't get VEB bw info, err %s aq_err %s\n",
10215                          i40e_stat_str(&pf->hw, ret),
10216                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10217                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10218                 return -ENOENT;
10219         }
10220
10221         vsi->uplink_seid = veb->seid;
10222         vsi->veb_idx = veb->idx;
10223         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
10224
10225         return 0;
10226 }
10227
10228 /**
10229  * i40e_veb_setup - Set up a VEB
10230  * @pf: board private structure
10231  * @flags: VEB setup flags
10232  * @uplink_seid: the switch element to link to
10233  * @vsi_seid: the initial VSI seid
10234  * @enabled_tc: Enabled TC bit-map
10235  *
10236  * This allocates the sw VEB structure and links it into the switch
10237  * It is possible and legal for this to be a duplicate of an already
10238  * existing VEB.  It is also possible for both uplink and vsi seids
10239  * to be zero, in order to create a floating VEB.
10240  *
10241  * Returns pointer to the successfully allocated VEB sw struct on
10242  * success, otherwise returns NULL on failure.
10243  **/
10244 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
10245                                 u16 uplink_seid, u16 vsi_seid,
10246                                 u8 enabled_tc)
10247 {
10248         struct i40e_veb *veb, *uplink_veb = NULL;
10249         int vsi_idx, veb_idx;
10250         int ret;
10251
10252         /* if one seid is 0, the other must be 0 to create a floating relay */
10253         if ((uplink_seid == 0 || vsi_seid == 0) &&
10254             (uplink_seid + vsi_seid != 0)) {
10255                 dev_info(&pf->pdev->dev,
10256                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
10257                          uplink_seid, vsi_seid);
10258                 return NULL;
10259         }
10260
10261         /* make sure there is such a vsi and uplink */
10262         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
10263                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
10264                         break;
10265         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
10266                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
10267                          vsi_seid);
10268                 return NULL;
10269         }
10270
10271         if (uplink_seid && uplink_seid != pf->mac_seid) {
10272                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
10273                         if (pf->veb[veb_idx] &&
10274                             pf->veb[veb_idx]->seid == uplink_seid) {
10275                                 uplink_veb = pf->veb[veb_idx];
10276                                 break;
10277                         }
10278                 }
10279                 if (!uplink_veb) {
10280                         dev_info(&pf->pdev->dev,
10281                                  "uplink seid %d not found\n", uplink_seid);
10282                         return NULL;
10283                 }
10284         }
10285
10286         /* get veb sw struct */
10287         veb_idx = i40e_veb_mem_alloc(pf);
10288         if (veb_idx < 0)
10289                 goto err_alloc;
10290         veb = pf->veb[veb_idx];
10291         veb->flags = flags;
10292         veb->uplink_seid = uplink_seid;
10293         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
10294         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
10295
10296         /* create the VEB in the switch */
10297         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
10298         if (ret)
10299                 goto err_veb;
10300         if (vsi_idx == pf->lan_vsi)
10301                 pf->lan_veb = veb->idx;
10302
10303         return veb;
10304
10305 err_veb:
10306         i40e_veb_clear(veb);
10307 err_alloc:
10308         return NULL;
10309 }
10310
10311 /**
10312  * i40e_setup_pf_switch_element - set PF vars based on switch type
10313  * @pf: board private structure
10314  * @ele: element we are building info from
10315  * @num_reported: total number of elements
10316  * @printconfig: should we print the contents
10317  *
10318  * helper function to assist in extracting a few useful SEID values.
10319  **/
10320 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
10321                                 struct i40e_aqc_switch_config_element_resp *ele,
10322                                 u16 num_reported, bool printconfig)
10323 {
10324         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
10325         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
10326         u8 element_type = ele->element_type;
10327         u16 seid = le16_to_cpu(ele->seid);
10328
10329         if (printconfig)
10330                 dev_info(&pf->pdev->dev,
10331                          "type=%d seid=%d uplink=%d downlink=%d\n",
10332                          element_type, seid, uplink_seid, downlink_seid);
10333
10334         switch (element_type) {
10335         case I40E_SWITCH_ELEMENT_TYPE_MAC:
10336                 pf->mac_seid = seid;
10337                 break;
10338         case I40E_SWITCH_ELEMENT_TYPE_VEB:
10339                 /* Main VEB? */
10340                 if (uplink_seid != pf->mac_seid)
10341                         break;
10342                 if (pf->lan_veb == I40E_NO_VEB) {
10343                         int v;
10344
10345                         /* find existing or else empty VEB */
10346                         for (v = 0; v < I40E_MAX_VEB; v++) {
10347                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
10348                                         pf->lan_veb = v;
10349                                         break;
10350                                 }
10351                         }
10352                         if (pf->lan_veb == I40E_NO_VEB) {
10353                                 v = i40e_veb_mem_alloc(pf);
10354                                 if (v < 0)
10355                                         break;
10356                                 pf->lan_veb = v;
10357                         }
10358                 }
10359
10360                 pf->veb[pf->lan_veb]->seid = seid;
10361                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
10362                 pf->veb[pf->lan_veb]->pf = pf;
10363                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
10364                 break;
10365         case I40E_SWITCH_ELEMENT_TYPE_VSI:
10366                 if (num_reported != 1)
10367                         break;
10368                 /* This is immediately after a reset so we can assume this is
10369                  * the PF's VSI
10370                  */
10371                 pf->mac_seid = uplink_seid;
10372                 pf->pf_seid = downlink_seid;
10373                 pf->main_vsi_seid = seid;
10374                 if (printconfig)
10375                         dev_info(&pf->pdev->dev,
10376                                  "pf_seid=%d main_vsi_seid=%d\n",
10377                                  pf->pf_seid, pf->main_vsi_seid);
10378                 break;
10379         case I40E_SWITCH_ELEMENT_TYPE_PF:
10380         case I40E_SWITCH_ELEMENT_TYPE_VF:
10381         case I40E_SWITCH_ELEMENT_TYPE_EMP:
10382         case I40E_SWITCH_ELEMENT_TYPE_BMC:
10383         case I40E_SWITCH_ELEMENT_TYPE_PE:
10384         case I40E_SWITCH_ELEMENT_TYPE_PA:
10385                 /* ignore these for now */
10386                 break;
10387         default:
10388                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
10389                          element_type, seid);
10390                 break;
10391         }
10392 }
10393
10394 /**
10395  * i40e_fetch_switch_configuration - Get switch config from firmware
10396  * @pf: board private structure
10397  * @printconfig: should we print the contents
10398  *
10399  * Get the current switch configuration from the device and
10400  * extract a few useful SEID values.
10401  **/
10402 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
10403 {
10404         struct i40e_aqc_get_switch_config_resp *sw_config;
10405         u16 next_seid = 0;
10406         int ret = 0;
10407         u8 *aq_buf;
10408         int i;
10409
10410         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
10411         if (!aq_buf)
10412                 return -ENOMEM;
10413
10414         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
10415         do {
10416                 u16 num_reported, num_total;
10417
10418                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
10419                                                 I40E_AQ_LARGE_BUF,
10420                                                 &next_seid, NULL);
10421                 if (ret) {
10422                         dev_info(&pf->pdev->dev,
10423                                  "get switch config failed err %s aq_err %s\n",
10424                                  i40e_stat_str(&pf->hw, ret),
10425                                  i40e_aq_str(&pf->hw,
10426                                              pf->hw.aq.asq_last_status));
10427                         kfree(aq_buf);
10428                         return -ENOENT;
10429                 }
10430
10431                 num_reported = le16_to_cpu(sw_config->header.num_reported);
10432                 num_total = le16_to_cpu(sw_config->header.num_total);
10433
10434                 if (printconfig)
10435                         dev_info(&pf->pdev->dev,
10436                                  "header: %d reported %d total\n",
10437                                  num_reported, num_total);
10438
10439                 for (i = 0; i < num_reported; i++) {
10440                         struct i40e_aqc_switch_config_element_resp *ele =
10441                                 &sw_config->element[i];
10442
10443                         i40e_setup_pf_switch_element(pf, ele, num_reported,
10444                                                      printconfig);
10445                 }
10446         } while (next_seid != 0);
10447
10448         kfree(aq_buf);
10449         return ret;
10450 }
10451
10452 /**
10453  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
10454  * @pf: board private structure
10455  * @reinit: if the Main VSI needs to re-initialized.
10456  *
10457  * Returns 0 on success, negative value on failure
10458  **/
10459 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
10460 {
10461         u16 flags = 0;
10462         int ret;
10463
10464         /* find out what's out there already */
10465         ret = i40e_fetch_switch_configuration(pf, false);
10466         if (ret) {
10467                 dev_info(&pf->pdev->dev,
10468                          "couldn't fetch switch config, err %s aq_err %s\n",
10469                          i40e_stat_str(&pf->hw, ret),
10470                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10471                 return ret;
10472         }
10473         i40e_pf_reset_stats(pf);
10474
10475         /* set the switch config bit for the whole device to
10476          * support limited promisc or true promisc
10477          * when user requests promisc. The default is limited
10478          * promisc.
10479         */
10480
10481         if ((pf->hw.pf_id == 0) &&
10482             !(pf->flags & I40E_FLAG_TRUE_PROMISC_SUPPORT))
10483                 flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
10484
10485         if (pf->hw.pf_id == 0) {
10486                 u16 valid_flags;
10487
10488                 valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
10489                 ret = i40e_aq_set_switch_config(&pf->hw, flags, valid_flags,
10490                                                 NULL);
10491                 if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) {
10492                         dev_info(&pf->pdev->dev,
10493                                  "couldn't set switch config bits, err %s aq_err %s\n",
10494                                  i40e_stat_str(&pf->hw, ret),
10495                                  i40e_aq_str(&pf->hw,
10496                                              pf->hw.aq.asq_last_status));
10497                         /* not a fatal problem, just keep going */
10498                 }
10499         }
10500
10501         /* first time setup */
10502         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
10503                 struct i40e_vsi *vsi = NULL;
10504                 u16 uplink_seid;
10505
10506                 /* Set up the PF VSI associated with the PF's main VSI
10507                  * that is already in the HW switch
10508                  */
10509                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
10510                         uplink_seid = pf->veb[pf->lan_veb]->seid;
10511                 else
10512                         uplink_seid = pf->mac_seid;
10513                 if (pf->lan_vsi == I40E_NO_VSI)
10514                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
10515                 else if (reinit)
10516                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
10517                 if (!vsi) {
10518                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
10519                         i40e_fdir_teardown(pf);
10520                         return -EAGAIN;
10521                 }
10522         } else {
10523                 /* force a reset of TC and queue layout configurations */
10524                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
10525
10526                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
10527                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
10528                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
10529         }
10530         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
10531
10532         i40e_fdir_sb_setup(pf);
10533
10534         /* Setup static PF queue filter control settings */
10535         ret = i40e_setup_pf_filter_control(pf);
10536         if (ret) {
10537                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
10538                          ret);
10539                 /* Failure here should not stop continuing other steps */
10540         }
10541
10542         /* enable RSS in the HW, even for only one queue, as the stack can use
10543          * the hash
10544          */
10545         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
10546                 i40e_pf_config_rss(pf);
10547
10548         /* fill in link information and enable LSE reporting */
10549         i40e_update_link_info(&pf->hw);
10550         i40e_link_event(pf);
10551
10552         /* Initialize user-specific link properties */
10553         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
10554                                   I40E_AQ_AN_COMPLETED) ? true : false);
10555
10556         i40e_ptp_init(pf);
10557
10558         return ret;
10559 }
10560
10561 /**
10562  * i40e_determine_queue_usage - Work out queue distribution
10563  * @pf: board private structure
10564  **/
10565 static void i40e_determine_queue_usage(struct i40e_pf *pf)
10566 {
10567         int queues_left;
10568
10569         pf->num_lan_qps = 0;
10570 #ifdef I40E_FCOE
10571         pf->num_fcoe_qps = 0;
10572 #endif
10573
10574         /* Find the max queues to be put into basic use.  We'll always be
10575          * using TC0, whether or not DCB is running, and TC0 will get the
10576          * big RSS set.
10577          */
10578         queues_left = pf->hw.func_caps.num_tx_qp;
10579
10580         if ((queues_left == 1) ||
10581             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
10582                 /* one qp for PF, no queues for anything else */
10583                 queues_left = 0;
10584                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10585
10586                 /* make sure all the fancies are disabled */
10587                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10588                                I40E_FLAG_IWARP_ENABLED  |
10589 #ifdef I40E_FCOE
10590                                I40E_FLAG_FCOE_ENABLED   |
10591 #endif
10592                                I40E_FLAG_FD_SB_ENABLED  |
10593                                I40E_FLAG_FD_ATR_ENABLED |
10594                                I40E_FLAG_DCB_CAPABLE    |
10595                                I40E_FLAG_DCB_ENABLED    |
10596                                I40E_FLAG_SRIOV_ENABLED  |
10597                                I40E_FLAG_VMDQ_ENABLED);
10598         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
10599                                   I40E_FLAG_FD_SB_ENABLED |
10600                                   I40E_FLAG_FD_ATR_ENABLED |
10601                                   I40E_FLAG_DCB_CAPABLE))) {
10602                 /* one qp for PF */
10603                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10604                 queues_left -= pf->num_lan_qps;
10605
10606                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10607                                I40E_FLAG_IWARP_ENABLED  |
10608 #ifdef I40E_FCOE
10609                                I40E_FLAG_FCOE_ENABLED   |
10610 #endif
10611                                I40E_FLAG_FD_SB_ENABLED  |
10612                                I40E_FLAG_FD_ATR_ENABLED |
10613                                I40E_FLAG_DCB_ENABLED    |
10614                                I40E_FLAG_VMDQ_ENABLED);
10615         } else {
10616                 /* Not enough queues for all TCs */
10617                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
10618                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
10619                         pf->flags &= ~(I40E_FLAG_DCB_CAPABLE |
10620                                         I40E_FLAG_DCB_ENABLED);
10621                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
10622                 }
10623                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
10624                                         num_online_cpus());
10625                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
10626                                         pf->hw.func_caps.num_tx_qp);
10627
10628                 queues_left -= pf->num_lan_qps;
10629         }
10630
10631 #ifdef I40E_FCOE
10632         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
10633                 if (I40E_DEFAULT_FCOE <= queues_left) {
10634                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
10635                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
10636                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
10637                 } else {
10638                         pf->num_fcoe_qps = 0;
10639                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
10640                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
10641                 }
10642
10643                 queues_left -= pf->num_fcoe_qps;
10644         }
10645
10646 #endif
10647         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10648                 if (queues_left > 1) {
10649                         queues_left -= 1; /* save 1 queue for FD */
10650                 } else {
10651                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
10652                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
10653                 }
10654         }
10655
10656         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10657             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
10658                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
10659                                         (queues_left / pf->num_vf_qps));
10660                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
10661         }
10662
10663         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
10664             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
10665                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
10666                                           (queues_left / pf->num_vmdq_qps));
10667                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
10668         }
10669
10670         pf->queues_left = queues_left;
10671         dev_dbg(&pf->pdev->dev,
10672                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
10673                 pf->hw.func_caps.num_tx_qp,
10674                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
10675                 pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
10676                 pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
10677                 queues_left);
10678 #ifdef I40E_FCOE
10679         dev_dbg(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
10680 #endif
10681 }
10682
10683 /**
10684  * i40e_setup_pf_filter_control - Setup PF static filter control
10685  * @pf: PF to be setup
10686  *
10687  * i40e_setup_pf_filter_control sets up a PF's initial filter control
10688  * settings. If PE/FCoE are enabled then it will also set the per PF
10689  * based filter sizes required for them. It also enables Flow director,
10690  * ethertype and macvlan type filter settings for the pf.
10691  *
10692  * Returns 0 on success, negative on failure
10693  **/
10694 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
10695 {
10696         struct i40e_filter_control_settings *settings = &pf->filter_settings;
10697
10698         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
10699
10700         /* Flow Director is enabled */
10701         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
10702                 settings->enable_fdir = true;
10703
10704         /* Ethtype and MACVLAN filters enabled for PF */
10705         settings->enable_ethtype = true;
10706         settings->enable_macvlan = true;
10707
10708         if (i40e_set_filter_control(&pf->hw, settings))
10709                 return -ENOENT;
10710
10711         return 0;
10712 }
10713
10714 #define INFO_STRING_LEN 255
10715 #define REMAIN(__x) (INFO_STRING_LEN - (__x))
10716 static void i40e_print_features(struct i40e_pf *pf)
10717 {
10718         struct i40e_hw *hw = &pf->hw;
10719         char *buf;
10720         int i;
10721
10722         buf = kmalloc(INFO_STRING_LEN, GFP_KERNEL);
10723         if (!buf)
10724                 return;
10725
10726         i = snprintf(buf, INFO_STRING_LEN, "Features: PF-id[%d]", hw->pf_id);
10727 #ifdef CONFIG_PCI_IOV
10728         i += snprintf(&buf[i], REMAIN(i), " VFs: %d", pf->num_req_vfs);
10729 #endif
10730         i += snprintf(&buf[i], REMAIN(i), " VSIs: %d QP: %d",
10731                       pf->hw.func_caps.num_vsis,
10732                       pf->vsi[pf->lan_vsi]->num_queue_pairs);
10733         if (pf->flags & I40E_FLAG_RSS_ENABLED)
10734                 i += snprintf(&buf[i], REMAIN(i), " RSS");
10735         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
10736                 i += snprintf(&buf[i], REMAIN(i), " FD_ATR");
10737         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10738                 i += snprintf(&buf[i], REMAIN(i), " FD_SB");
10739                 i += snprintf(&buf[i], REMAIN(i), " NTUPLE");
10740         }
10741         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
10742                 i += snprintf(&buf[i], REMAIN(i), " DCB");
10743         i += snprintf(&buf[i], REMAIN(i), " VxLAN");
10744         i += snprintf(&buf[i], REMAIN(i), " Geneve");
10745         if (pf->flags & I40E_FLAG_PTP)
10746                 i += snprintf(&buf[i], REMAIN(i), " PTP");
10747 #ifdef I40E_FCOE
10748         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
10749                 i += snprintf(&buf[i], REMAIN(i), " FCOE");
10750 #endif
10751         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
10752                 i += snprintf(&buf[i], REMAIN(i), " VEB");
10753         else
10754                 i += snprintf(&buf[i], REMAIN(i), " VEPA");
10755
10756         dev_info(&pf->pdev->dev, "%s\n", buf);
10757         kfree(buf);
10758         WARN_ON(i > INFO_STRING_LEN);
10759 }
10760
10761 /**
10762  * i40e_get_platform_mac_addr - get platform-specific MAC address
10763  *
10764  * @pdev: PCI device information struct
10765  * @pf: board private structure
10766  *
10767  * Look up the MAC address in Open Firmware  on systems that support it,
10768  * and use IDPROM on SPARC if no OF address is found. On return, the
10769  * I40E_FLAG_PF_MAC will be wset in pf->flags if a platform-specific value
10770  * has been selected.
10771  **/
10772 static void i40e_get_platform_mac_addr(struct pci_dev *pdev, struct i40e_pf *pf)
10773 {
10774         pf->flags &= ~I40E_FLAG_PF_MAC;
10775         if (!eth_platform_get_mac_address(&pdev->dev, pf->hw.mac.addr))
10776                 pf->flags |= I40E_FLAG_PF_MAC;
10777 }
10778
10779 /**
10780  * i40e_probe - Device initialization routine
10781  * @pdev: PCI device information struct
10782  * @ent: entry in i40e_pci_tbl
10783  *
10784  * i40e_probe initializes a PF identified by a pci_dev structure.
10785  * The OS initialization, configuring of the PF private structure,
10786  * and a hardware reset occur.
10787  *
10788  * Returns 0 on success, negative on failure
10789  **/
10790 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
10791 {
10792         struct i40e_aq_get_phy_abilities_resp abilities;
10793         struct i40e_pf *pf;
10794         struct i40e_hw *hw;
10795         static u16 pfs_found;
10796         u16 wol_nvm_bits;
10797         u16 link_status;
10798         int err;
10799         u32 val;
10800         u32 i;
10801         u8 set_fc_aq_fail;
10802
10803         err = pci_enable_device_mem(pdev);
10804         if (err)
10805                 return err;
10806
10807         /* set up for high or low dma */
10808         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10809         if (err) {
10810                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10811                 if (err) {
10812                         dev_err(&pdev->dev,
10813                                 "DMA configuration failed: 0x%x\n", err);
10814                         goto err_dma;
10815                 }
10816         }
10817
10818         /* set up pci connections */
10819         err = pci_request_mem_regions(pdev, i40e_driver_name);
10820         if (err) {
10821                 dev_info(&pdev->dev,
10822                          "pci_request_selected_regions failed %d\n", err);
10823                 goto err_pci_reg;
10824         }
10825
10826         pci_enable_pcie_error_reporting(pdev);
10827         pci_set_master(pdev);
10828
10829         /* Now that we have a PCI connection, we need to do the
10830          * low level device setup.  This is primarily setting up
10831          * the Admin Queue structures and then querying for the
10832          * device's current profile information.
10833          */
10834         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
10835         if (!pf) {
10836                 err = -ENOMEM;
10837                 goto err_pf_alloc;
10838         }
10839         pf->next_vsi = 0;
10840         pf->pdev = pdev;
10841         set_bit(__I40E_DOWN, &pf->state);
10842
10843         hw = &pf->hw;
10844         hw->back = pf;
10845
10846         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
10847                                 I40E_MAX_CSR_SPACE);
10848
10849         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
10850         if (!hw->hw_addr) {
10851                 err = -EIO;
10852                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
10853                          (unsigned int)pci_resource_start(pdev, 0),
10854                          pf->ioremap_len, err);
10855                 goto err_ioremap;
10856         }
10857         hw->vendor_id = pdev->vendor;
10858         hw->device_id = pdev->device;
10859         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10860         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10861         hw->subsystem_device_id = pdev->subsystem_device;
10862         hw->bus.device = PCI_SLOT(pdev->devfn);
10863         hw->bus.func = PCI_FUNC(pdev->devfn);
10864         pf->instance = pfs_found;
10865
10866         /* set up the locks for the AQ, do this only once in probe
10867          * and destroy them only once in remove
10868          */
10869         mutex_init(&hw->aq.asq_mutex);
10870         mutex_init(&hw->aq.arq_mutex);
10871
10872         if (debug != -1) {
10873                 pf->msg_enable = pf->hw.debug_mask;
10874                 pf->msg_enable = debug;
10875         }
10876
10877         /* do a special CORER for clearing PXE mode once at init */
10878         if (hw->revision_id == 0 &&
10879             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10880                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10881                 i40e_flush(hw);
10882                 msleep(200);
10883                 pf->corer_count++;
10884
10885                 i40e_clear_pxe_mode(hw);
10886         }
10887
10888         /* Reset here to make sure all is clean and to define PF 'n' */
10889         i40e_clear_hw(hw);
10890         err = i40e_pf_reset(hw);
10891         if (err) {
10892                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10893                 goto err_pf_reset;
10894         }
10895         pf->pfr_count++;
10896
10897         hw->aq.num_arq_entries = I40E_AQ_LEN;
10898         hw->aq.num_asq_entries = I40E_AQ_LEN;
10899         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10900         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10901         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10902
10903         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10904                  "%s-%s:misc",
10905                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10906
10907         err = i40e_init_shared_code(hw);
10908         if (err) {
10909                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10910                          err);
10911                 goto err_pf_reset;
10912         }
10913
10914         /* set up a default setting for link flow control */
10915         pf->hw.fc.requested_mode = I40E_FC_NONE;
10916
10917         err = i40e_init_adminq(hw);
10918         if (err) {
10919                 if (err == I40E_ERR_FIRMWARE_API_VERSION)
10920                         dev_info(&pdev->dev,
10921                                  "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");
10922                 else
10923                         dev_info(&pdev->dev,
10924                                  "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");
10925
10926                 goto err_pf_reset;
10927         }
10928
10929         /* provide nvm, fw, api versions */
10930         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
10931                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
10932                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
10933                  i40e_nvm_version_str(hw));
10934
10935         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10936             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10937                 dev_info(&pdev->dev,
10938                          "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");
10939         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10940                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10941                 dev_info(&pdev->dev,
10942                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10943
10944         i40e_verify_eeprom(pf);
10945
10946         /* Rev 0 hardware was never productized */
10947         if (hw->revision_id < 1)
10948                 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");
10949
10950         i40e_clear_pxe_mode(hw);
10951         err = i40e_get_capabilities(pf);
10952         if (err)
10953                 goto err_adminq_setup;
10954
10955         err = i40e_sw_init(pf);
10956         if (err) {
10957                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10958                 goto err_sw_init;
10959         }
10960
10961         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10962                                 hw->func_caps.num_rx_qp,
10963                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10964         if (err) {
10965                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10966                 goto err_init_lan_hmc;
10967         }
10968
10969         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10970         if (err) {
10971                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10972                 err = -ENOENT;
10973                 goto err_configure_lan_hmc;
10974         }
10975
10976         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10977          * Ignore error return codes because if it was already disabled via
10978          * hardware settings this will fail
10979          */
10980         if (pf->flags & I40E_FLAG_STOP_FW_LLDP) {
10981                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10982                 i40e_aq_stop_lldp(hw, true, NULL);
10983         }
10984
10985         i40e_get_mac_addr(hw, hw->mac.addr);
10986         /* allow a platform config to override the HW addr */
10987         i40e_get_platform_mac_addr(pdev, pf);
10988         if (!is_valid_ether_addr(hw->mac.addr)) {
10989                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10990                 err = -EIO;
10991                 goto err_mac_addr;
10992         }
10993         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10994         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10995         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10996         if (is_valid_ether_addr(hw->mac.port_addr))
10997                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10998 #ifdef I40E_FCOE
10999         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
11000         if (err)
11001                 dev_info(&pdev->dev,
11002                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
11003         if (!is_valid_ether_addr(hw->mac.san_addr)) {
11004                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
11005                          hw->mac.san_addr);
11006                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
11007         }
11008         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
11009 #endif /* I40E_FCOE */
11010
11011         pci_set_drvdata(pdev, pf);
11012         pci_save_state(pdev);
11013 #ifdef CONFIG_I40E_DCB
11014         err = i40e_init_pf_dcb(pf);
11015         if (err) {
11016                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
11017                 pf->flags &= ~(I40E_FLAG_DCB_CAPABLE & I40E_FLAG_DCB_ENABLED);
11018                 /* Continue without DCB enabled */
11019         }
11020 #endif /* CONFIG_I40E_DCB */
11021
11022         /* set up periodic task facility */
11023         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
11024         pf->service_timer_period = HZ;
11025
11026         INIT_WORK(&pf->service_task, i40e_service_task);
11027         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
11028         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
11029
11030         /* NVM bit on means WoL disabled for the port */
11031         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
11032         if (BIT (hw->port) & wol_nvm_bits || hw->partition_id != 1)
11033                 pf->wol_en = false;
11034         else
11035                 pf->wol_en = true;
11036         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
11037
11038         /* set up the main switch operations */
11039         i40e_determine_queue_usage(pf);
11040         err = i40e_init_interrupt_scheme(pf);
11041         if (err)
11042                 goto err_switch_setup;
11043
11044         /* The number of VSIs reported by the FW is the minimum guaranteed
11045          * to us; HW supports far more and we share the remaining pool with
11046          * the other PFs. We allocate space for more than the guarantee with
11047          * the understanding that we might not get them all later.
11048          */
11049         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
11050                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
11051         else
11052                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
11053
11054         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
11055         pf->vsi = kcalloc(pf->num_alloc_vsi, sizeof(struct i40e_vsi *),
11056                           GFP_KERNEL);
11057         if (!pf->vsi) {
11058                 err = -ENOMEM;
11059                 goto err_switch_setup;
11060         }
11061
11062 #ifdef CONFIG_PCI_IOV
11063         /* prep for VF support */
11064         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
11065             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
11066             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
11067                 if (pci_num_vf(pdev))
11068                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
11069         }
11070 #endif
11071         err = i40e_setup_pf_switch(pf, false);
11072         if (err) {
11073                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
11074                 goto err_vsis;
11075         }
11076
11077         /* Make sure flow control is set according to current settings */
11078         err = i40e_set_fc(hw, &set_fc_aq_fail, true);
11079         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
11080                 dev_dbg(&pf->pdev->dev,
11081                         "Set fc with err %s aq_err %s on get_phy_cap\n",
11082                         i40e_stat_str(hw, err),
11083                         i40e_aq_str(hw, hw->aq.asq_last_status));
11084         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
11085                 dev_dbg(&pf->pdev->dev,
11086                         "Set fc with err %s aq_err %s on set_phy_config\n",
11087                         i40e_stat_str(hw, err),
11088                         i40e_aq_str(hw, hw->aq.asq_last_status));
11089         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
11090                 dev_dbg(&pf->pdev->dev,
11091                         "Set fc with err %s aq_err %s on get_link_info\n",
11092                         i40e_stat_str(hw, err),
11093                         i40e_aq_str(hw, hw->aq.asq_last_status));
11094
11095         /* if FDIR VSI was set up, start it now */
11096         for (i = 0; i < pf->num_alloc_vsi; i++) {
11097                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
11098                         i40e_vsi_open(pf->vsi[i]);
11099                         break;
11100                 }
11101         }
11102
11103         /* The driver only wants link up/down and module qualification
11104          * reports from firmware.  Note the negative logic.
11105          */
11106         err = i40e_aq_set_phy_int_mask(&pf->hw,
11107                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
11108                                          I40E_AQ_EVENT_MEDIA_NA |
11109                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
11110         if (err)
11111                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
11112                          i40e_stat_str(&pf->hw, err),
11113                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11114
11115         /* Reconfigure hardware for allowing smaller MSS in the case
11116          * of TSO, so that we avoid the MDD being fired and causing
11117          * a reset in the case of small MSS+TSO.
11118          */
11119         val = rd32(hw, I40E_REG_MSS);
11120         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
11121                 val &= ~I40E_REG_MSS_MIN_MASK;
11122                 val |= I40E_64BYTE_MSS;
11123                 wr32(hw, I40E_REG_MSS, val);
11124         }
11125
11126         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
11127                 msleep(75);
11128                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
11129                 if (err)
11130                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
11131                                  i40e_stat_str(&pf->hw, err),
11132                                  i40e_aq_str(&pf->hw,
11133                                              pf->hw.aq.asq_last_status));
11134         }
11135         /* The main driver is (mostly) up and happy. We need to set this state
11136          * before setting up the misc vector or we get a race and the vector
11137          * ends up disabled forever.
11138          */
11139         clear_bit(__I40E_DOWN, &pf->state);
11140
11141         /* In case of MSIX we are going to setup the misc vector right here
11142          * to handle admin queue events etc. In case of legacy and MSI
11143          * the misc functionality and queue processing is combined in
11144          * the same vector and that gets setup at open.
11145          */
11146         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
11147                 err = i40e_setup_misc_vector(pf);
11148                 if (err) {
11149                         dev_info(&pdev->dev,
11150                                  "setup of misc vector failed: %d\n", err);
11151                         goto err_vsis;
11152                 }
11153         }
11154
11155 #ifdef CONFIG_PCI_IOV
11156         /* prep for VF support */
11157         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
11158             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
11159             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
11160                 /* disable link interrupts for VFs */
11161                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
11162                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
11163                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
11164                 i40e_flush(hw);
11165
11166                 if (pci_num_vf(pdev)) {
11167                         dev_info(&pdev->dev,
11168                                  "Active VFs found, allocating resources.\n");
11169                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
11170                         if (err)
11171                                 dev_info(&pdev->dev,
11172                                          "Error %d allocating resources for existing VFs\n",
11173                                          err);
11174                 }
11175         }
11176 #endif /* CONFIG_PCI_IOV */
11177
11178         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11179                 pf->iwarp_base_vector = i40e_get_lump(pf, pf->irq_pile,
11180                                                       pf->num_iwarp_msix,
11181                                                       I40E_IWARP_IRQ_PILE_ID);
11182                 if (pf->iwarp_base_vector < 0) {
11183                         dev_info(&pdev->dev,
11184                                  "failed to get tracking for %d vectors for IWARP err=%d\n",
11185                                  pf->num_iwarp_msix, pf->iwarp_base_vector);
11186                         pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
11187                 }
11188         }
11189
11190         i40e_dbg_pf_init(pf);
11191
11192         /* tell the firmware that we're starting */
11193         i40e_send_version(pf);
11194
11195         /* since everything's happy, start the service_task timer */
11196         mod_timer(&pf->service_timer,
11197                   round_jiffies(jiffies + pf->service_timer_period));
11198
11199         /* add this PF to client device list and launch a client service task */
11200         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11201                 err = i40e_lan_add_device(pf);
11202                 if (err)
11203                         dev_info(&pdev->dev, "Failed to add PF to client API service list: %d\n",
11204                                  err);
11205         }
11206
11207 #ifdef I40E_FCOE
11208         /* create FCoE interface */
11209         i40e_fcoe_vsi_setup(pf);
11210
11211 #endif
11212 #define PCI_SPEED_SIZE 8
11213 #define PCI_WIDTH_SIZE 8
11214         /* Devices on the IOSF bus do not have this information
11215          * and will report PCI Gen 1 x 1 by default so don't bother
11216          * checking them.
11217          */
11218         if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
11219                 char speed[PCI_SPEED_SIZE] = "Unknown";
11220                 char width[PCI_WIDTH_SIZE] = "Unknown";
11221
11222                 /* Get the negotiated link width and speed from PCI config
11223                  * space
11224                  */
11225                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
11226                                           &link_status);
11227
11228                 i40e_set_pci_config_data(hw, link_status);
11229
11230                 switch (hw->bus.speed) {
11231                 case i40e_bus_speed_8000:
11232                         strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
11233                 case i40e_bus_speed_5000:
11234                         strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
11235                 case i40e_bus_speed_2500:
11236                         strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
11237                 default:
11238                         break;
11239                 }
11240                 switch (hw->bus.width) {
11241                 case i40e_bus_width_pcie_x8:
11242                         strncpy(width, "8", PCI_WIDTH_SIZE); break;
11243                 case i40e_bus_width_pcie_x4:
11244                         strncpy(width, "4", PCI_WIDTH_SIZE); break;
11245                 case i40e_bus_width_pcie_x2:
11246                         strncpy(width, "2", PCI_WIDTH_SIZE); break;
11247                 case i40e_bus_width_pcie_x1:
11248                         strncpy(width, "1", PCI_WIDTH_SIZE); break;
11249                 default:
11250                         break;
11251                 }
11252
11253                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
11254                          speed, width);
11255
11256                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
11257                     hw->bus.speed < i40e_bus_speed_8000) {
11258                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
11259                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
11260                 }
11261         }
11262
11263         /* get the requested speeds from the fw */
11264         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
11265         if (err)
11266                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
11267                         i40e_stat_str(&pf->hw, err),
11268                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11269         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
11270
11271         /* get the supported phy types from the fw */
11272         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
11273         if (err)
11274                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
11275                         i40e_stat_str(&pf->hw, err),
11276                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11277         pf->hw.phy.phy_types = le32_to_cpu(abilities.phy_type);
11278
11279         /* Add a filter to drop all Flow control frames from any VSI from being
11280          * transmitted. By doing so we stop a malicious VF from sending out
11281          * PAUSE or PFC frames and potentially controlling traffic for other
11282          * PF/VF VSIs.
11283          * The FW can still send Flow control frames if enabled.
11284          */
11285         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
11286                                                        pf->main_vsi_seid);
11287
11288         if ((pf->hw.device_id == I40E_DEV_ID_10G_BASE_T) ||
11289             (pf->hw.device_id == I40E_DEV_ID_10G_BASE_T4))
11290                 pf->flags |= I40E_FLAG_HAVE_10GBASET_PHY;
11291
11292         /* print a string summarizing features */
11293         i40e_print_features(pf);
11294
11295         return 0;
11296
11297         /* Unwind what we've done if something failed in the setup */
11298 err_vsis:
11299         set_bit(__I40E_DOWN, &pf->state);
11300         i40e_clear_interrupt_scheme(pf);
11301         kfree(pf->vsi);
11302 err_switch_setup:
11303         i40e_reset_interrupt_capability(pf);
11304         del_timer_sync(&pf->service_timer);
11305 err_mac_addr:
11306 err_configure_lan_hmc:
11307         (void)i40e_shutdown_lan_hmc(hw);
11308 err_init_lan_hmc:
11309         kfree(pf->qp_pile);
11310 err_sw_init:
11311 err_adminq_setup:
11312 err_pf_reset:
11313         iounmap(hw->hw_addr);
11314 err_ioremap:
11315         kfree(pf);
11316 err_pf_alloc:
11317         pci_disable_pcie_error_reporting(pdev);
11318         pci_release_mem_regions(pdev);
11319 err_pci_reg:
11320 err_dma:
11321         pci_disable_device(pdev);
11322         return err;
11323 }
11324
11325 /**
11326  * i40e_remove - Device removal routine
11327  * @pdev: PCI device information struct
11328  *
11329  * i40e_remove is called by the PCI subsystem to alert the driver
11330  * that is should release a PCI device.  This could be caused by a
11331  * Hot-Plug event, or because the driver is going to be removed from
11332  * memory.
11333  **/
11334 static void i40e_remove(struct pci_dev *pdev)
11335 {
11336         struct i40e_pf *pf = pci_get_drvdata(pdev);
11337         struct i40e_hw *hw = &pf->hw;
11338         i40e_status ret_code;
11339         int i;
11340
11341         i40e_dbg_pf_exit(pf);
11342
11343         i40e_ptp_stop(pf);
11344
11345         /* Disable RSS in hw */
11346         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), 0);
11347         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), 0);
11348
11349         /* no more scheduling of any task */
11350         set_bit(__I40E_SUSPENDED, &pf->state);
11351         set_bit(__I40E_DOWN, &pf->state);
11352         if (pf->service_timer.data)
11353                 del_timer_sync(&pf->service_timer);
11354         if (pf->service_task.func)
11355                 cancel_work_sync(&pf->service_task);
11356
11357         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
11358                 i40e_free_vfs(pf);
11359                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
11360         }
11361
11362         i40e_fdir_teardown(pf);
11363
11364         /* If there is a switch structure or any orphans, remove them.
11365          * This will leave only the PF's VSI remaining.
11366          */
11367         for (i = 0; i < I40E_MAX_VEB; i++) {
11368                 if (!pf->veb[i])
11369                         continue;
11370
11371                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
11372                     pf->veb[i]->uplink_seid == 0)
11373                         i40e_switch_branch_release(pf->veb[i]);
11374         }
11375
11376         /* Now we can shutdown the PF's VSI, just before we kill
11377          * adminq and hmc.
11378          */
11379         if (pf->vsi[pf->lan_vsi])
11380                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
11381
11382         /* remove attached clients */
11383         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11384                 ret_code = i40e_lan_del_device(pf);
11385                 if (ret_code)
11386                         dev_warn(&pdev->dev, "Failed to delete client device: %d\n",
11387                                  ret_code);
11388         }
11389
11390         /* shutdown and destroy the HMC */
11391         if (hw->hmc.hmc_obj) {
11392                 ret_code = i40e_shutdown_lan_hmc(hw);
11393                 if (ret_code)
11394                         dev_warn(&pdev->dev,
11395                                  "Failed to destroy the HMC resources: %d\n",
11396                                  ret_code);
11397         }
11398
11399         /* shutdown the adminq */
11400         i40e_shutdown_adminq(hw);
11401
11402         /* destroy the locks only once, here */
11403         mutex_destroy(&hw->aq.arq_mutex);
11404         mutex_destroy(&hw->aq.asq_mutex);
11405
11406         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
11407         rtnl_lock();
11408         i40e_clear_interrupt_scheme(pf);
11409         for (i = 0; i < pf->num_alloc_vsi; i++) {
11410                 if (pf->vsi[i]) {
11411                         i40e_vsi_clear_rings(pf->vsi[i]);
11412                         i40e_vsi_clear(pf->vsi[i]);
11413                         pf->vsi[i] = NULL;
11414                 }
11415         }
11416         rtnl_unlock();
11417
11418         for (i = 0; i < I40E_MAX_VEB; i++) {
11419                 kfree(pf->veb[i]);
11420                 pf->veb[i] = NULL;
11421         }
11422
11423         kfree(pf->qp_pile);
11424         kfree(pf->vsi);
11425
11426         iounmap(hw->hw_addr);
11427         kfree(pf);
11428         pci_release_mem_regions(pdev);
11429
11430         pci_disable_pcie_error_reporting(pdev);
11431         pci_disable_device(pdev);
11432 }
11433
11434 /**
11435  * i40e_pci_error_detected - warning that something funky happened in PCI land
11436  * @pdev: PCI device information struct
11437  *
11438  * Called to warn that something happened and the error handling steps
11439  * are in progress.  Allows the driver to quiesce things, be ready for
11440  * remediation.
11441  **/
11442 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
11443                                                 enum pci_channel_state error)
11444 {
11445         struct i40e_pf *pf = pci_get_drvdata(pdev);
11446
11447         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
11448
11449         if (!pf) {
11450                 dev_info(&pdev->dev,
11451                          "Cannot recover - error happened during device probe\n");
11452                 return PCI_ERS_RESULT_DISCONNECT;
11453         }
11454
11455         /* shutdown all operations */
11456         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
11457                 rtnl_lock();
11458                 i40e_prep_for_reset(pf);
11459                 rtnl_unlock();
11460         }
11461
11462         /* Request a slot reset */
11463         return PCI_ERS_RESULT_NEED_RESET;
11464 }
11465
11466 /**
11467  * i40e_pci_error_slot_reset - a PCI slot reset just happened
11468  * @pdev: PCI device information struct
11469  *
11470  * Called to find if the driver can work with the device now that
11471  * the pci slot has been reset.  If a basic connection seems good
11472  * (registers are readable and have sane content) then return a
11473  * happy little PCI_ERS_RESULT_xxx.
11474  **/
11475 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
11476 {
11477         struct i40e_pf *pf = pci_get_drvdata(pdev);
11478         pci_ers_result_t result;
11479         int err;
11480         u32 reg;
11481
11482         dev_dbg(&pdev->dev, "%s\n", __func__);
11483         if (pci_enable_device_mem(pdev)) {
11484                 dev_info(&pdev->dev,
11485                          "Cannot re-enable PCI device after reset.\n");
11486                 result = PCI_ERS_RESULT_DISCONNECT;
11487         } else {
11488                 pci_set_master(pdev);
11489                 pci_restore_state(pdev);
11490                 pci_save_state(pdev);
11491                 pci_wake_from_d3(pdev, false);
11492
11493                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
11494                 if (reg == 0)
11495                         result = PCI_ERS_RESULT_RECOVERED;
11496                 else
11497                         result = PCI_ERS_RESULT_DISCONNECT;
11498         }
11499
11500         err = pci_cleanup_aer_uncorrect_error_status(pdev);
11501         if (err) {
11502                 dev_info(&pdev->dev,
11503                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
11504                          err);
11505                 /* non-fatal, continue */
11506         }
11507
11508         return result;
11509 }
11510
11511 /**
11512  * i40e_pci_error_resume - restart operations after PCI error recovery
11513  * @pdev: PCI device information struct
11514  *
11515  * Called to allow the driver to bring things back up after PCI error
11516  * and/or reset recovery has finished.
11517  **/
11518 static void i40e_pci_error_resume(struct pci_dev *pdev)
11519 {
11520         struct i40e_pf *pf = pci_get_drvdata(pdev);
11521
11522         dev_dbg(&pdev->dev, "%s\n", __func__);
11523         if (test_bit(__I40E_SUSPENDED, &pf->state))
11524                 return;
11525
11526         rtnl_lock();
11527         i40e_handle_reset_warning(pf);
11528         rtnl_unlock();
11529 }
11530
11531 /**
11532  * i40e_shutdown - PCI callback for shutting down
11533  * @pdev: PCI device information struct
11534  **/
11535 static void i40e_shutdown(struct pci_dev *pdev)
11536 {
11537         struct i40e_pf *pf = pci_get_drvdata(pdev);
11538         struct i40e_hw *hw = &pf->hw;
11539
11540         set_bit(__I40E_SUSPENDED, &pf->state);
11541         set_bit(__I40E_DOWN, &pf->state);
11542         rtnl_lock();
11543         i40e_prep_for_reset(pf);
11544         rtnl_unlock();
11545
11546         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11547         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11548
11549         del_timer_sync(&pf->service_timer);
11550         cancel_work_sync(&pf->service_task);
11551         i40e_fdir_teardown(pf);
11552
11553         rtnl_lock();
11554         i40e_prep_for_reset(pf);
11555         rtnl_unlock();
11556
11557         wr32(hw, I40E_PFPM_APM,
11558              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11559         wr32(hw, I40E_PFPM_WUFC,
11560              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11561
11562         /* Since we're going to destroy queues during the
11563          * i40e_clear_interrupt_scheme() we should hold the RTNL lock for this
11564          * whole section
11565          */
11566         rtnl_lock();
11567         i40e_clear_interrupt_scheme(pf);
11568         rtnl_unlock();
11569
11570         if (system_state == SYSTEM_POWER_OFF) {
11571                 pci_wake_from_d3(pdev, pf->wol_en);
11572                 pci_set_power_state(pdev, PCI_D3hot);
11573         }
11574 }
11575
11576 #ifdef CONFIG_PM
11577 /**
11578  * i40e_suspend - PCI callback for moving to D3
11579  * @pdev: PCI device information struct
11580  **/
11581 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
11582 {
11583         struct i40e_pf *pf = pci_get_drvdata(pdev);
11584         struct i40e_hw *hw = &pf->hw;
11585         int retval = 0;
11586
11587         set_bit(__I40E_SUSPENDED, &pf->state);
11588         set_bit(__I40E_DOWN, &pf->state);
11589
11590         rtnl_lock();
11591         i40e_prep_for_reset(pf);
11592         rtnl_unlock();
11593
11594         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11595         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11596
11597         i40e_stop_misc_vector(pf);
11598
11599         retval = pci_save_state(pdev);
11600         if (retval)
11601                 return retval;
11602
11603         pci_wake_from_d3(pdev, pf->wol_en);
11604         pci_set_power_state(pdev, PCI_D3hot);
11605
11606         return retval;
11607 }
11608
11609 /**
11610  * i40e_resume - PCI callback for waking up from D3
11611  * @pdev: PCI device information struct
11612  **/
11613 static int i40e_resume(struct pci_dev *pdev)
11614 {
11615         struct i40e_pf *pf = pci_get_drvdata(pdev);
11616         u32 err;
11617
11618         pci_set_power_state(pdev, PCI_D0);
11619         pci_restore_state(pdev);
11620         /* pci_restore_state() clears dev->state_saves, so
11621          * call pci_save_state() again to restore it.
11622          */
11623         pci_save_state(pdev);
11624
11625         err = pci_enable_device_mem(pdev);
11626         if (err) {
11627                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
11628                 return err;
11629         }
11630         pci_set_master(pdev);
11631
11632         /* no wakeup events while running */
11633         pci_wake_from_d3(pdev, false);
11634
11635         /* handling the reset will rebuild the device state */
11636         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
11637                 clear_bit(__I40E_DOWN, &pf->state);
11638                 rtnl_lock();
11639                 i40e_reset_and_rebuild(pf, false);
11640                 rtnl_unlock();
11641         }
11642
11643         return 0;
11644 }
11645
11646 #endif
11647 static const struct pci_error_handlers i40e_err_handler = {
11648         .error_detected = i40e_pci_error_detected,
11649         .slot_reset = i40e_pci_error_slot_reset,
11650         .resume = i40e_pci_error_resume,
11651 };
11652
11653 static struct pci_driver i40e_driver = {
11654         .name     = i40e_driver_name,
11655         .id_table = i40e_pci_tbl,
11656         .probe    = i40e_probe,
11657         .remove   = i40e_remove,
11658 #ifdef CONFIG_PM
11659         .suspend  = i40e_suspend,
11660         .resume   = i40e_resume,
11661 #endif
11662         .shutdown = i40e_shutdown,
11663         .err_handler = &i40e_err_handler,
11664         .sriov_configure = i40e_pci_sriov_configure,
11665 };
11666
11667 /**
11668  * i40e_init_module - Driver registration routine
11669  *
11670  * i40e_init_module is the first routine called when the driver is
11671  * loaded. All it does is register with the PCI subsystem.
11672  **/
11673 static int __init i40e_init_module(void)
11674 {
11675         pr_info("%s: %s - version %s\n", i40e_driver_name,
11676                 i40e_driver_string, i40e_driver_version_str);
11677         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
11678
11679         /* we will see if single thread per module is enough for now,
11680          * it can't be any worse than using the system workqueue which
11681          * was already single threaded
11682          */
11683         i40e_wq = alloc_workqueue("%s", WQ_UNBOUND | WQ_MEM_RECLAIM, 1,
11684                                   i40e_driver_name);
11685         if (!i40e_wq) {
11686                 pr_err("%s: Failed to create workqueue\n", i40e_driver_name);
11687                 return -ENOMEM;
11688         }
11689
11690         i40e_dbg_init();
11691         return pci_register_driver(&i40e_driver);
11692 }
11693 module_init(i40e_init_module);
11694
11695 /**
11696  * i40e_exit_module - Driver exit cleanup routine
11697  *
11698  * i40e_exit_module is called just before the driver is removed
11699  * from memory.
11700  **/
11701 static void __exit i40e_exit_module(void)
11702 {
11703         pci_unregister_driver(&i40e_driver);
11704         destroy_workqueue(i40e_wq);
11705         i40e_dbg_exit();
11706 }
11707 module_exit(i40e_exit_module);