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

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2015 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * The full GNU General Public License is included in this distribution in
  19  * the file called "COPYING".
  20  *
  21  * Contact Information:
  22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  ******************************************************************************/
  26
  27 /* Local includes */
  28 #include "i40e.h"
  29 #include "i40e_diag.h"
  30 #ifdef CONFIG_I40E_VXLAN
  31 #include <net/vxlan.h>
  32 #endif
  33
  34 const char i40e_driver_name[] = "i40e";
  35 static const char i40e_driver_string[] =
  36                         "Intel(R) Ethernet Connection XL710 Network Driver";
  37
  38 #define DRV_KERN "-k"
  39
  40 #define DRV_VERSION_MAJOR 1
  41 #define DRV_VERSION_MINOR 3
  42 #define DRV_VERSION_BUILD 21
  43 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
  44              __stringify(DRV_VERSION_MINOR) "." \
  45              __stringify(DRV_VERSION_BUILD)    DRV_KERN
  46 const char i40e_driver_version_str[] = DRV_VERSION;
  47 static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
  48
  49 /* a bit of forward declarations */
  50 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  51 static void i40e_handle_reset_warning(struct i40e_pf *pf);
  52 static int i40e_add_vsi(struct i40e_vsi *vsi);
  53 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  54 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
  55 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  56 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  57 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  58 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  59 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  60
  61 /* i40e_pci_tbl - PCI Device ID Table
  62  *
  63  * Last entry must be all 0s
  64  *
  65  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  66  *   Class, Class Mask, private data (not used) }
  67  */
  68 static const struct pci_device_id i40e_pci_tbl[] = {
  69         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  70         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  71         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_A), 0},
  72         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  78         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  79         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  80         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  81         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  82         /* required last entry */
  83         {0, }
  84 };
  85 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  86
  87 #define I40E_MAX_VF_COUNT 128
  88 static int debug = -1;
  89 module_param(debug, int, 0);
  90 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  91
  92 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  93 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  94 MODULE_LICENSE("GPL");
  95 MODULE_VERSION(DRV_VERSION);
  96
  97 /**
  98  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
  99  * @hw:   pointer to the HW structure
 100  * @mem:  ptr to mem struct to fill out
 101  * @size: size of memory requested
 102  * @alignment: what to align the allocation to
 103  **/
 104 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 105                             u64 size, u32 alignment)
 106 {
 107         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 108
 109         mem->size = ALIGN(size, alignment);
 110         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 111                                       &mem->pa, GFP_KERNEL);
 112         if (!mem->va)
 113                 return -ENOMEM;
 114
 115         return 0;
 116 }
 117
 118 /**
 119  * i40e_free_dma_mem_d - OS specific memory free for shared code
 120  * @hw:   pointer to the HW structure
 121  * @mem:  ptr to mem struct to free
 122  **/
 123 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 124 {
 125         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 126
 127         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 128         mem->va = NULL;
 129         mem->pa = 0;
 130         mem->size = 0;
 131
 132         return 0;
 133 }
 134
 135 /**
 136  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 137  * @hw:   pointer to the HW structure
 138  * @mem:  ptr to mem struct to fill out
 139  * @size: size of memory requested
 140  **/
 141 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 142                              u32 size)
 143 {
 144         mem->size = size;
 145         mem->va = kzalloc(size, GFP_KERNEL);
 146
 147         if (!mem->va)
 148                 return -ENOMEM;
 149
 150         return 0;
 151 }
 152
 153 /**
 154  * i40e_free_virt_mem_d - OS specific memory free for shared code
 155  * @hw:   pointer to the HW structure
 156  * @mem:  ptr to mem struct to free
 157  **/
 158 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 159 {
 160         /* it's ok to kfree a NULL pointer */
 161         kfree(mem->va);
 162         mem->va = NULL;
 163         mem->size = 0;
 164
 165         return 0;
 166 }
 167
 168 /**
 169  * i40e_get_lump - find a lump of free generic resource
 170  * @pf: board private structure
 171  * @pile: the pile of resource to search
 172  * @needed: the number of items needed
 173  * @id: an owner id to stick on the items assigned
 174  *
 175  * Returns the base item index of the lump, or negative for error
 176  *
 177  * The search_hint trick and lack of advanced fit-finding only work
 178  * because we're highly likely to have all the same size lump requests.
 179  * Linear search time and any fragmentation should be minimal.
 180  **/
 181 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 182                          u16 needed, u16 id)
 183 {
 184         int ret = -ENOMEM;
 185         int i, j;
 186
 187         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 188                 dev_info(&pf->pdev->dev,
 189                          "param err: pile=%p needed=%d id=0x%04x\n",
 190                          pile, needed, id);
 191                 return -EINVAL;
 192         }
 193
 194         /* start the linear search with an imperfect hint */
 195         i = pile->search_hint;
 196         while (i < pile->num_entries) {
 197                 /* skip already allocated entries */
 198                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 199                         i++;
 200                         continue;
 201                 }
 202
 203                 /* do we have enough in this lump? */
 204                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 205                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 206                                 break;
 207                 }
 208
 209                 if (j == needed) {
 210                         /* there was enough, so assign it to the requestor */
 211                         for (j = 0; j < needed; j++)
 212                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 213                         ret = i;
 214                         pile->search_hint = i + j;
 215                         break;
 216                 } else {
 217                         /* not enough, so skip over it and continue looking */
 218                         i += j;
 219                 }
 220         }
 221
 222         return ret;
 223 }
 224
 225 /**
 226  * i40e_put_lump - return a lump of generic resource
 227  * @pile: the pile of resource to search
 228  * @index: the base item index
 229  * @id: the owner id of the items assigned
 230  *
 231  * Returns the count of items in the lump
 232  **/
 233 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 234 {
 235         int valid_id = (id | I40E_PILE_VALID_BIT);
 236         int count = 0;
 237         int i;
 238
 239         if (!pile || index >= pile->num_entries)
 240                 return -EINVAL;
 241
 242         for (i = index;
 243              i < pile->num_entries && pile->list[i] == valid_id;
 244              i++) {
 245                 pile->list[i] = 0;
 246                 count++;
 247         }
 248
 249         if (count && index < pile->search_hint)
 250                 pile->search_hint = index;
 251
 252         return count;
 253 }
 254
 255 /**
 256  * i40e_find_vsi_from_id - searches for the vsi with the given id
 257  * @pf - the pf structure to search for the vsi
 258  * @id - id of the vsi it is searching for
 259  **/
 260 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 261 {
 262         int i;
 263
 264         for (i = 0; i < pf->num_alloc_vsi; i++)
 265                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 266                         return pf->vsi[i];
 267
 268         return NULL;
 269 }
 270
 271 /**
 272  * i40e_service_event_schedule - Schedule the service task to wake up
 273  * @pf: board private structure
 274  *
 275  * If not already scheduled, this puts the task into the work queue
 276  **/
 277 static void i40e_service_event_schedule(struct i40e_pf *pf)
 278 {
 279         if (!test_bit(__I40E_DOWN, &pf->state) &&
 280             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 281             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 282                 schedule_work(&pf->service_task);
 283 }
 284
 285 /**
 286  * i40e_tx_timeout - Respond to a Tx Hang
 287  * @netdev: network interface device structure
 288  *
 289  * If any port has noticed a Tx timeout, it is likely that the whole
 290  * device is munged, not just the one netdev port, so go for the full
 291  * reset.
 292  **/
 293 #ifdef I40E_FCOE
 294 void i40e_tx_timeout(struct net_device *netdev)
 295 #else
 296 static void i40e_tx_timeout(struct net_device *netdev)
 297 #endif
 298 {
 299         struct i40e_netdev_priv *np = netdev_priv(netdev);
 300         struct i40e_vsi *vsi = np->vsi;
 301         struct i40e_pf *pf = vsi->back;
 302         struct i40e_ring *tx_ring = NULL;
 303         unsigned int i, hung_queue = 0;
 304         u32 head, val;
 305
 306         pf->tx_timeout_count++;
 307
 308         /* find the stopped queue the same way the stack does */
 309         for (i = 0; i < netdev->num_tx_queues; i++) {
 310                 struct netdev_queue *q;
 311                 unsigned long trans_start;
 312
 313                 q = netdev_get_tx_queue(netdev, i);
 314                 trans_start = q->trans_start ? : netdev->trans_start;
 315                 if (netif_xmit_stopped(q) &&
 316                     time_after(jiffies,
 317                                (trans_start + netdev->watchdog_timeo))) {
 318                         hung_queue = i;
 319                         break;
 320                 }
 321         }
 322
 323         if (i == netdev->num_tx_queues) {
 324                 netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
 325         } else {
 326                 /* now that we have an index, find the tx_ring struct */
 327                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 328                         if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
 329                                 if (hung_queue ==
 330                                     vsi->tx_rings[i]->queue_index) {
 331                                         tx_ring = vsi->tx_rings[i];
 332                                         break;
 333                                 }
 334                         }
 335                 }
 336         }
 337
 338         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 339                 pf->tx_timeout_recovery_level = 1;  /* reset after some time */
 340         else if (time_before(jiffies,
 341                       (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
 342                 return;   /* don't do any new action before the next timeout */
 343
 344         if (tx_ring) {
 345                 head = i40e_get_head(tx_ring);
 346                 /* Read interrupt register */
 347                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
 348                         val = rd32(&pf->hw,
 349                              I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
 350                                                 tx_ring->vsi->base_vector - 1));
 351                 else
 352                         val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
 353
 354                 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",
 355                             vsi->seid, hung_queue, tx_ring->next_to_clean,
 356                             head, tx_ring->next_to_use,
 357                             readl(tx_ring->tail), val);
 358         }
 359
 360         pf->tx_timeout_last_recovery = jiffies;
 361         netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
 362                     pf->tx_timeout_recovery_level, hung_queue);
 363
 364         switch (pf->tx_timeout_recovery_level) {
 365         case 1:
 366                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 367                 break;
 368         case 2:
 369                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 370                 break;
 371         case 3:
 372                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 373                 break;
 374         default:
 375                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 376                 break;
 377         }
 378
 379         i40e_service_event_schedule(pf);
 380         pf->tx_timeout_recovery_level++;
 381 }
 382
 383 /**
 384  * i40e_release_rx_desc - Store the new tail and head values
 385  * @rx_ring: ring to bump
 386  * @val: new head index
 387  **/
 388 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 389 {
 390         rx_ring->next_to_use = val;
 391
 392         /* Force memory writes to complete before letting h/w
 393          * know there are new descriptors to fetch.  (Only
 394          * applicable for weak-ordered memory model archs,
 395          * such as IA-64).
 396          */
 397         wmb();
 398         writel(val, rx_ring->tail);
 399 }
 400
 401 /**
 402  * i40e_get_vsi_stats_struct - Get System Network Statistics
 403  * @vsi: the VSI we care about
 404  *
 405  * Returns the address of the device statistics structure.
 406  * The statistics are actually updated from the service task.
 407  **/
 408 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 409 {
 410         return &vsi->net_stats;
 411 }
 412
 413 /**
 414  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 415  * @netdev: network interface device structure
 416  *
 417  * Returns the address of the device statistics structure.
 418  * The statistics are actually updated from the service task.
 419  **/
 420 #ifdef I40E_FCOE
 421 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 422                                              struct net_device *netdev,
 423                                              struct rtnl_link_stats64 *stats)
 424 #else
 425 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 426                                              struct net_device *netdev,
 427                                              struct rtnl_link_stats64 *stats)
 428 #endif
 429 {
 430         struct i40e_netdev_priv *np = netdev_priv(netdev);
 431         struct i40e_ring *tx_ring, *rx_ring;
 432         struct i40e_vsi *vsi = np->vsi;
 433         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 434         int i;
 435
 436         if (test_bit(__I40E_DOWN, &vsi->state))
 437                 return stats;
 438
 439         if (!vsi->tx_rings)
 440                 return stats;
 441
 442         rcu_read_lock();
 443         for (i = 0; i < vsi->num_queue_pairs; i++) {
 444                 u64 bytes, packets;
 445                 unsigned int start;
 446
 447                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 448                 if (!tx_ring)
 449                         continue;
 450
 451                 do {
 452                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 453                         packets = tx_ring->stats.packets;
 454                         bytes   = tx_ring->stats.bytes;
 455                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 456
 457                 stats->tx_packets += packets;
 458                 stats->tx_bytes   += bytes;
 459                 rx_ring = &tx_ring[1];
 460
 461                 do {
 462                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 463                         packets = rx_ring->stats.packets;
 464                         bytes   = rx_ring->stats.bytes;
 465                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 466
 467                 stats->rx_packets += packets;
 468                 stats->rx_bytes   += bytes;
 469         }
 470         rcu_read_unlock();
 471
 472         /* following stats updated by i40e_watchdog_subtask() */
 473         stats->multicast        = vsi_stats->multicast;
 474         stats->tx_errors        = vsi_stats->tx_errors;
 475         stats->tx_dropped       = vsi_stats->tx_dropped;
 476         stats->rx_errors        = vsi_stats->rx_errors;
 477         stats->rx_dropped       = vsi_stats->rx_dropped;
 478         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 479         stats->rx_length_errors = vsi_stats->rx_length_errors;
 480
 481         return stats;
 482 }
 483
 484 /**
 485  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 486  * @vsi: the VSI to have its stats reset
 487  **/
 488 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 489 {
 490         struct rtnl_link_stats64 *ns;
 491         int i;
 492
 493         if (!vsi)
 494                 return;
 495
 496         ns = i40e_get_vsi_stats_struct(vsi);
 497         memset(ns, 0, sizeof(*ns));
 498         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 499         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 500         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 501         if (vsi->rx_rings && vsi->rx_rings[0]) {
 502                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 503                         memset(&vsi->rx_rings[i]->stats, 0 ,
 504                                sizeof(vsi->rx_rings[i]->stats));
 505                         memset(&vsi->rx_rings[i]->rx_stats, 0 ,
 506                                sizeof(vsi->rx_rings[i]->rx_stats));
 507                         memset(&vsi->tx_rings[i]->stats, 0 ,
 508                                sizeof(vsi->tx_rings[i]->stats));
 509                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 510                                sizeof(vsi->tx_rings[i]->tx_stats));
 511                 }
 512         }
 513         vsi->stat_offsets_loaded = false;
 514 }
 515
 516 /**
 517  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 518  * @pf: the PF to be reset
 519  **/
 520 void i40e_pf_reset_stats(struct i40e_pf *pf)
 521 {
 522         int i;
 523
 524         memset(&pf->stats, 0, sizeof(pf->stats));
 525         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 526         pf->stat_offsets_loaded = false;
 527
 528         for (i = 0; i < I40E_MAX_VEB; i++) {
 529                 if (pf->veb[i]) {
 530                         memset(&pf->veb[i]->stats, 0,
 531                                sizeof(pf->veb[i]->stats));
 532                         memset(&pf->veb[i]->stats_offsets, 0,
 533                                sizeof(pf->veb[i]->stats_offsets));
 534                         pf->veb[i]->stat_offsets_loaded = false;
 535                 }
 536         }
 537 }
 538
 539 /**
 540  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 541  * @hw: ptr to the hardware info
 542  * @hireg: the high 32 bit reg to read
 543  * @loreg: the low 32 bit reg to read
 544  * @offset_loaded: has the initial offset been loaded yet
 545  * @offset: ptr to current offset value
 546  * @stat: ptr to the stat
 547  *
 548  * Since the device stats are not reset at PFReset, they likely will not
 549  * be zeroed when the driver starts.  We'll save the first values read
 550  * and use them as offsets to be subtracted from the raw values in order
 551  * to report stats that count from zero.  In the process, we also manage
 552  * the potential roll-over.
 553  **/
 554 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 555                                bool offset_loaded, u64 *offset, u64 *stat)
 556 {
 557         u64 new_data;
 558
 559         if (hw->device_id == I40E_DEV_ID_QEMU) {
 560                 new_data = rd32(hw, loreg);
 561                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 562         } else {
 563                 new_data = rd64(hw, loreg);
 564         }
 565         if (!offset_loaded)
 566                 *offset = new_data;
 567         if (likely(new_data >= *offset))
 568                 *stat = new_data - *offset;
 569         else
 570                 *stat = (new_data + BIT_ULL(48)) - *offset;
 571         *stat &= 0xFFFFFFFFFFFFULL;
 572 }
 573
 574 /**
 575  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 576  * @hw: ptr to the hardware info
 577  * @reg: the hw reg to read
 578  * @offset_loaded: has the initial offset been loaded yet
 579  * @offset: ptr to current offset value
 580  * @stat: ptr to the stat
 581  **/
 582 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 583                                bool offset_loaded, u64 *offset, u64 *stat)
 584 {
 585         u32 new_data;
 586
 587         new_data = rd32(hw, reg);
 588         if (!offset_loaded)
 589                 *offset = new_data;
 590         if (likely(new_data >= *offset))
 591                 *stat = (u32)(new_data - *offset);
 592         else
 593                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 594 }
 595
 596 /**
 597  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 598  * @vsi: the VSI to be updated
 599  **/
 600 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 601 {
 602         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 603         struct i40e_pf *pf = vsi->back;
 604         struct i40e_hw *hw = &pf->hw;
 605         struct i40e_eth_stats *oes;
 606         struct i40e_eth_stats *es;     /* device's eth stats */
 607
 608         es = &vsi->eth_stats;
 609         oes = &vsi->eth_stats_offsets;
 610
 611         /* Gather up the stats that the hw collects */
 612         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 613                            vsi->stat_offsets_loaded,
 614                            &oes->tx_errors, &es->tx_errors);
 615         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 616                            vsi->stat_offsets_loaded,
 617                            &oes->rx_discards, &es->rx_discards);
 618         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 619                            vsi->stat_offsets_loaded,
 620                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 621         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 622                            vsi->stat_offsets_loaded,
 623                            &oes->tx_errors, &es->tx_errors);
 624
 625         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 626                            I40E_GLV_GORCL(stat_idx),
 627                            vsi->stat_offsets_loaded,
 628                            &oes->rx_bytes, &es->rx_bytes);
 629         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 630                            I40E_GLV_UPRCL(stat_idx),
 631                            vsi->stat_offsets_loaded,
 632                            &oes->rx_unicast, &es->rx_unicast);
 633         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 634                            I40E_GLV_MPRCL(stat_idx),
 635                            vsi->stat_offsets_loaded,
 636                            &oes->rx_multicast, &es->rx_multicast);
 637         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 638                            I40E_GLV_BPRCL(stat_idx),
 639                            vsi->stat_offsets_loaded,
 640                            &oes->rx_broadcast, &es->rx_broadcast);
 641
 642         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 643                            I40E_GLV_GOTCL(stat_idx),
 644                            vsi->stat_offsets_loaded,
 645                            &oes->tx_bytes, &es->tx_bytes);
 646         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 647                            I40E_GLV_UPTCL(stat_idx),
 648                            vsi->stat_offsets_loaded,
 649                            &oes->tx_unicast, &es->tx_unicast);
 650         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 651                            I40E_GLV_MPTCL(stat_idx),
 652                            vsi->stat_offsets_loaded,
 653                            &oes->tx_multicast, &es->tx_multicast);
 654         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 655                            I40E_GLV_BPTCL(stat_idx),
 656                            vsi->stat_offsets_loaded,
 657                            &oes->tx_broadcast, &es->tx_broadcast);
 658         vsi->stat_offsets_loaded = true;
 659 }
 660
 661 /**
 662  * i40e_update_veb_stats - Update Switch component statistics
 663  * @veb: the VEB being updated
 664  **/
 665 static void i40e_update_veb_stats(struct i40e_veb *veb)
 666 {
 667         struct i40e_pf *pf = veb->pf;
 668         struct i40e_hw *hw = &pf->hw;
 669         struct i40e_eth_stats *oes;
 670         struct i40e_eth_stats *es;     /* device's eth stats */
 671         struct i40e_veb_tc_stats *veb_oes;
 672         struct i40e_veb_tc_stats *veb_es;
 673         int i, idx = 0;
 674
 675         idx = veb->stats_idx;
 676         es = &veb->stats;
 677         oes = &veb->stats_offsets;
 678         veb_es = &veb->tc_stats;
 679         veb_oes = &veb->tc_stats_offsets;
 680
 681         /* Gather up the stats that the hw collects */
 682         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 683                            veb->stat_offsets_loaded,
 684                            &oes->tx_discards, &es->tx_discards);
 685         if (hw->revision_id > 0)
 686                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 687                                    veb->stat_offsets_loaded,
 688                                    &oes->rx_unknown_protocol,
 689                                    &es->rx_unknown_protocol);
 690         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 691                            veb->stat_offsets_loaded,
 692                            &oes->rx_bytes, &es->rx_bytes);
 693         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 694                            veb->stat_offsets_loaded,
 695                            &oes->rx_unicast, &es->rx_unicast);
 696         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 697                            veb->stat_offsets_loaded,
 698                            &oes->rx_multicast, &es->rx_multicast);
 699         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 700                            veb->stat_offsets_loaded,
 701                            &oes->rx_broadcast, &es->rx_broadcast);
 702
 703         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 704                            veb->stat_offsets_loaded,
 705                            &oes->tx_bytes, &es->tx_bytes);
 706         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 707                            veb->stat_offsets_loaded,
 708                            &oes->tx_unicast, &es->tx_unicast);
 709         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 710                            veb->stat_offsets_loaded,
 711                            &oes->tx_multicast, &es->tx_multicast);
 712         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 713                            veb->stat_offsets_loaded,
 714                            &oes->tx_broadcast, &es->tx_broadcast);
 715         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 716                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 717                                    I40E_GLVEBTC_RPCL(i, idx),
 718                                    veb->stat_offsets_loaded,
 719                                    &veb_oes->tc_rx_packets[i],
 720                                    &veb_es->tc_rx_packets[i]);
 721                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 722                                    I40E_GLVEBTC_RBCL(i, idx),
 723                                    veb->stat_offsets_loaded,
 724                                    &veb_oes->tc_rx_bytes[i],
 725                                    &veb_es->tc_rx_bytes[i]);
 726                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 727                                    I40E_GLVEBTC_TPCL(i, idx),
 728                                    veb->stat_offsets_loaded,
 729                                    &veb_oes->tc_tx_packets[i],
 730                                    &veb_es->tc_tx_packets[i]);
 731                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 732                                    I40E_GLVEBTC_TBCL(i, idx),
 733                                    veb->stat_offsets_loaded,
 734                                    &veb_oes->tc_tx_bytes[i],
 735                                    &veb_es->tc_tx_bytes[i]);
 736         }
 737         veb->stat_offsets_loaded = true;
 738 }
 739
 740 #ifdef I40E_FCOE
 741 /**
 742  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 743  * @vsi: the VSI that is capable of doing FCoE
 744  **/
 745 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 746 {
 747         struct i40e_pf *pf = vsi->back;
 748         struct i40e_hw *hw = &pf->hw;
 749         struct i40e_fcoe_stats *ofs;
 750         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 751         int idx;
 752
 753         if (vsi->type != I40E_VSI_FCOE)
 754                 return;
 755
 756         idx = (pf->pf_seid - I40E_BASE_PF_SEID) + I40E_FCOE_PF_STAT_OFFSET;
 757         fs = &vsi->fcoe_stats;
 758         ofs = &vsi->fcoe_stats_offsets;
 759
 760         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 761                            vsi->fcoe_stat_offsets_loaded,
 762                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 763         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 764                            vsi->fcoe_stat_offsets_loaded,
 765                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 766         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 767                            vsi->fcoe_stat_offsets_loaded,
 768                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 769         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 770                            vsi->fcoe_stat_offsets_loaded,
 771                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 772         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 773                            vsi->fcoe_stat_offsets_loaded,
 774                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 775         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 776                            vsi->fcoe_stat_offsets_loaded,
 777                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 778         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 779                            vsi->fcoe_stat_offsets_loaded,
 780                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 781         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 782                            vsi->fcoe_stat_offsets_loaded,
 783                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 784
 785         vsi->fcoe_stat_offsets_loaded = true;
 786 }
 787
 788 #endif
 789 /**
 790  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 791  * @pf: the corresponding PF
 792  *
 793  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 794  **/
 795 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 796 {
 797         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 798         struct i40e_hw_port_stats *nsd = &pf->stats;
 799         struct i40e_hw *hw = &pf->hw;
 800         u64 xoff = 0;
 801
 802         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 803             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 804                 return;
 805
 806         xoff = nsd->link_xoff_rx;
 807         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 808                            pf->stat_offsets_loaded,
 809                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 810
 811         /* No new LFC xoff rx */
 812         if (!(nsd->link_xoff_rx - xoff))
 813                 return;
 814
 815 }
 816
 817 /**
 818  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 819  * @pf: the corresponding PF
 820  *
 821  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 822  **/
 823 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 824 {
 825         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 826         struct i40e_hw_port_stats *nsd = &pf->stats;
 827         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 828         struct i40e_dcbx_config *dcb_cfg;
 829         struct i40e_hw *hw = &pf->hw;
 830         u16 i;
 831         u8 tc;
 832
 833         dcb_cfg = &hw->local_dcbx_config;
 834
 835         /* Collect Link XOFF stats when PFC is disabled */
 836         if (!dcb_cfg->pfc.pfcenable) {
 837                 i40e_update_link_xoff_rx(pf);
 838                 return;
 839         }
 840
 841         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 842                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 843                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 844                                    pf->stat_offsets_loaded,
 845                                    &osd->priority_xoff_rx[i],
 846                                    &nsd->priority_xoff_rx[i]);
 847
 848                 /* No new PFC xoff rx */
 849                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 850                         continue;
 851                 /* Get the TC for given priority */
 852                 tc = dcb_cfg->etscfg.prioritytable[i];
 853                 xoff[tc] = true;
 854         }
 855 }
 856
 857 /**
 858  * i40e_update_vsi_stats - Update the vsi statistics counters.
 859  * @vsi: the VSI to be updated
 860  *
 861  * There are a few instances where we store the same stat in a
 862  * couple of different structs.  This is partly because we have
 863  * the netdev stats that need to be filled out, which is slightly
 864  * different from the "eth_stats" defined by the chip and used in
 865  * VF communications.  We sort it out here.
 866  **/
 867 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 868 {
 869         struct i40e_pf *pf = vsi->back;
 870         struct rtnl_link_stats64 *ons;
 871         struct rtnl_link_stats64 *ns;   /* netdev stats */
 872         struct i40e_eth_stats *oes;
 873         struct i40e_eth_stats *es;     /* device's eth stats */
 874         u32 tx_restart, tx_busy;
 875         struct i40e_ring *p;
 876         u32 rx_page, rx_buf;
 877         u64 bytes, packets;
 878         unsigned int start;
 879         u64 rx_p, rx_b;
 880         u64 tx_p, tx_b;
 881         u16 q;
 882
 883         if (test_bit(__I40E_DOWN, &vsi->state) ||
 884             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 885                 return;
 886
 887         ns = i40e_get_vsi_stats_struct(vsi);
 888         ons = &vsi->net_stats_offsets;
 889         es = &vsi->eth_stats;
 890         oes = &vsi->eth_stats_offsets;
 891
 892         /* Gather up the netdev and vsi stats that the driver collects
 893          * on the fly during packet processing
 894          */
 895         rx_b = rx_p = 0;
 896         tx_b = tx_p = 0;
 897         tx_restart = tx_busy = 0;
 898         rx_page = 0;
 899         rx_buf = 0;
 900         rcu_read_lock();
 901         for (q = 0; q < vsi->num_queue_pairs; q++) {
 902                 /* locate Tx ring */
 903                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 904
 905                 do {
 906                         start = u64_stats_fetch_begin_irq(&p->syncp);
 907                         packets = p->stats.packets;
 908                         bytes = p->stats.bytes;
 909                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 910                 tx_b += bytes;
 911                 tx_p += packets;
 912                 tx_restart += p->tx_stats.restart_queue;
 913                 tx_busy += p->tx_stats.tx_busy;
 914
 915                 /* Rx queue is part of the same block as Tx queue */
 916                 p = &p[1];
 917                 do {
 918                         start = u64_stats_fetch_begin_irq(&p->syncp);
 919                         packets = p->stats.packets;
 920                         bytes = p->stats.bytes;
 921                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 922                 rx_b += bytes;
 923                 rx_p += packets;
 924                 rx_buf += p->rx_stats.alloc_buff_failed;
 925                 rx_page += p->rx_stats.alloc_page_failed;
 926         }
 927         rcu_read_unlock();
 928         vsi->tx_restart = tx_restart;
 929         vsi->tx_busy = tx_busy;
 930         vsi->rx_page_failed = rx_page;
 931         vsi->rx_buf_failed = rx_buf;
 932
 933         ns->rx_packets = rx_p;
 934         ns->rx_bytes = rx_b;
 935         ns->tx_packets = tx_p;
 936         ns->tx_bytes = tx_b;
 937
 938         /* update netdev stats from eth stats */
 939         i40e_update_eth_stats(vsi);
 940         ons->tx_errors = oes->tx_errors;
 941         ns->tx_errors = es->tx_errors;
 942         ons->multicast = oes->rx_multicast;
 943         ns->multicast = es->rx_multicast;
 944         ons->rx_dropped = oes->rx_discards;
 945         ns->rx_dropped = es->rx_discards;
 946         ons->tx_dropped = oes->tx_discards;
 947         ns->tx_dropped = es->tx_discards;
 948
 949         /* pull in a couple PF stats if this is the main vsi */
 950         if (vsi == pf->vsi[pf->lan_vsi]) {
 951                 ns->rx_crc_errors = pf->stats.crc_errors;
 952                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 953                 ns->rx_length_errors = pf->stats.rx_length_errors;
 954         }
 955 }
 956
 957 /**
 958  * i40e_update_pf_stats - Update the PF statistics counters.
 959  * @pf: the PF to be updated
 960  **/
 961 static void i40e_update_pf_stats(struct i40e_pf *pf)
 962 {
 963         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 964         struct i40e_hw_port_stats *nsd = &pf->stats;
 965         struct i40e_hw *hw = &pf->hw;
 966         u32 val;
 967         int i;
 968
 969         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 970                            I40E_GLPRT_GORCL(hw->port),
 971                            pf->stat_offsets_loaded,
 972                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 973         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 974                            I40E_GLPRT_GOTCL(hw->port),
 975                            pf->stat_offsets_loaded,
 976                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 977         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 978                            pf->stat_offsets_loaded,
 979                            &osd->eth.rx_discards,
 980                            &nsd->eth.rx_discards);
 981         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 982                            I40E_GLPRT_UPRCL(hw->port),
 983                            pf->stat_offsets_loaded,
 984                            &osd->eth.rx_unicast,
 985                            &nsd->eth.rx_unicast);
 986         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 987                            I40E_GLPRT_MPRCL(hw->port),
 988                            pf->stat_offsets_loaded,
 989                            &osd->eth.rx_multicast,
 990                            &nsd->eth.rx_multicast);
 991         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 992                            I40E_GLPRT_BPRCL(hw->port),
 993                            pf->stat_offsets_loaded,
 994                            &osd->eth.rx_broadcast,
 995                            &nsd->eth.rx_broadcast);
 996         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 997                            I40E_GLPRT_UPTCL(hw->port),
 998                            pf->stat_offsets_loaded,
 999                            &osd->eth.tx_unicast,
1000                            &nsd->eth.tx_unicast);
1001         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
1002                            I40E_GLPRT_MPTCL(hw->port),
1003                            pf->stat_offsets_loaded,
1004                            &osd->eth.tx_multicast,
1005                            &nsd->eth.tx_multicast);
1006         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
1007                            I40E_GLPRT_BPTCL(hw->port),
1008                            pf->stat_offsets_loaded,
1009                            &osd->eth.tx_broadcast,
1010                            &nsd->eth.tx_broadcast);
1011
1012         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
1013                            pf->stat_offsets_loaded,
1014                            &osd->tx_dropped_link_down,
1015                            &nsd->tx_dropped_link_down);
1016
1017         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
1018                            pf->stat_offsets_loaded,
1019                            &osd->crc_errors, &nsd->crc_errors);
1020
1021         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
1022                            pf->stat_offsets_loaded,
1023                            &osd->illegal_bytes, &nsd->illegal_bytes);
1024
1025         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
1026                            pf->stat_offsets_loaded,
1027                            &osd->mac_local_faults,
1028                            &nsd->mac_local_faults);
1029         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
1030                            pf->stat_offsets_loaded,
1031                            &osd->mac_remote_faults,
1032                            &nsd->mac_remote_faults);
1033
1034         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
1035                            pf->stat_offsets_loaded,
1036                            &osd->rx_length_errors,
1037                            &nsd->rx_length_errors);
1038
1039         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
1040                            pf->stat_offsets_loaded,
1041                            &osd->link_xon_rx, &nsd->link_xon_rx);
1042         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
1043                            pf->stat_offsets_loaded,
1044                            &osd->link_xon_tx, &nsd->link_xon_tx);
1045         i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
1046         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
1047                            pf->stat_offsets_loaded,
1048                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
1049
1050         for (i = 0; i < 8; i++) {
1051                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
1052                                    pf->stat_offsets_loaded,
1053                                    &osd->priority_xon_rx[i],
1054                                    &nsd->priority_xon_rx[i]);
1055                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1056                                    pf->stat_offsets_loaded,
1057                                    &osd->priority_xon_tx[i],
1058                                    &nsd->priority_xon_tx[i]);
1059                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1060                                    pf->stat_offsets_loaded,
1061                                    &osd->priority_xoff_tx[i],
1062                                    &nsd->priority_xoff_tx[i]);
1063                 i40e_stat_update32(hw,
1064                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1065                                    pf->stat_offsets_loaded,
1066                                    &osd->priority_xon_2_xoff[i],
1067                                    &nsd->priority_xon_2_xoff[i]);
1068         }
1069
1070         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1071                            I40E_GLPRT_PRC64L(hw->port),
1072                            pf->stat_offsets_loaded,
1073                            &osd->rx_size_64, &nsd->rx_size_64);
1074         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1075                            I40E_GLPRT_PRC127L(hw->port),
1076                            pf->stat_offsets_loaded,
1077                            &osd->rx_size_127, &nsd->rx_size_127);
1078         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1079                            I40E_GLPRT_PRC255L(hw->port),
1080                            pf->stat_offsets_loaded,
1081                            &osd->rx_size_255, &nsd->rx_size_255);
1082         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1083                            I40E_GLPRT_PRC511L(hw->port),
1084                            pf->stat_offsets_loaded,
1085                            &osd->rx_size_511, &nsd->rx_size_511);
1086         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1087                            I40E_GLPRT_PRC1023L(hw->port),
1088                            pf->stat_offsets_loaded,
1089                            &osd->rx_size_1023, &nsd->rx_size_1023);
1090         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1091                            I40E_GLPRT_PRC1522L(hw->port),
1092                            pf->stat_offsets_loaded,
1093                            &osd->rx_size_1522, &nsd->rx_size_1522);
1094         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1095                            I40E_GLPRT_PRC9522L(hw->port),
1096                            pf->stat_offsets_loaded,
1097                            &osd->rx_size_big, &nsd->rx_size_big);
1098
1099         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1100                            I40E_GLPRT_PTC64L(hw->port),
1101                            pf->stat_offsets_loaded,
1102                            &osd->tx_size_64, &nsd->tx_size_64);
1103         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1104                            I40E_GLPRT_PTC127L(hw->port),
1105                            pf->stat_offsets_loaded,
1106                            &osd->tx_size_127, &nsd->tx_size_127);
1107         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1108                            I40E_GLPRT_PTC255L(hw->port),
1109                            pf->stat_offsets_loaded,
1110                            &osd->tx_size_255, &nsd->tx_size_255);
1111         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1112                            I40E_GLPRT_PTC511L(hw->port),
1113                            pf->stat_offsets_loaded,
1114                            &osd->tx_size_511, &nsd->tx_size_511);
1115         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1116                            I40E_GLPRT_PTC1023L(hw->port),
1117                            pf->stat_offsets_loaded,
1118                            &osd->tx_size_1023, &nsd->tx_size_1023);
1119         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1120                            I40E_GLPRT_PTC1522L(hw->port),
1121                            pf->stat_offsets_loaded,
1122                            &osd->tx_size_1522, &nsd->tx_size_1522);
1123         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1124                            I40E_GLPRT_PTC9522L(hw->port),
1125                            pf->stat_offsets_loaded,
1126                            &osd->tx_size_big, &nsd->tx_size_big);
1127
1128         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1129                            pf->stat_offsets_loaded,
1130                            &osd->rx_undersize, &nsd->rx_undersize);
1131         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1132                            pf->stat_offsets_loaded,
1133                            &osd->rx_fragments, &nsd->rx_fragments);
1134         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1135                            pf->stat_offsets_loaded,
1136                            &osd->rx_oversize, &nsd->rx_oversize);
1137         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1138                            pf->stat_offsets_loaded,
1139                            &osd->rx_jabber, &nsd->rx_jabber);
1140
1141         /* FDIR stats */
1142         i40e_stat_update32(hw,
1143                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1144                            pf->stat_offsets_loaded,
1145                            &osd->fd_atr_match, &nsd->fd_atr_match);
1146         i40e_stat_update32(hw,
1147                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1148                            pf->stat_offsets_loaded,
1149                            &osd->fd_sb_match, &nsd->fd_sb_match);
1150         i40e_stat_update32(hw,
1151                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1152                       pf->stat_offsets_loaded,
1153                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1154
1155         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1156         nsd->tx_lpi_status =
1157                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1158                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1159         nsd->rx_lpi_status =
1160                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1161                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1162         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1163                            pf->stat_offsets_loaded,
1164                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1165         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1166                            pf->stat_offsets_loaded,
1167                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1168
1169         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1170             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1171                 nsd->fd_sb_status = true;
1172         else
1173                 nsd->fd_sb_status = false;
1174
1175         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1176             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1177                 nsd->fd_atr_status = true;
1178         else
1179                 nsd->fd_atr_status = false;
1180
1181         pf->stat_offsets_loaded = true;
1182 }
1183
1184 /**
1185  * i40e_update_stats - Update the various statistics counters.
1186  * @vsi: the VSI to be updated
1187  *
1188  * Update the various stats for this VSI and its related entities.
1189  **/
1190 void i40e_update_stats(struct i40e_vsi *vsi)
1191 {
1192         struct i40e_pf *pf = vsi->back;
1193
1194         if (vsi == pf->vsi[pf->lan_vsi])
1195                 i40e_update_pf_stats(pf);
1196
1197         i40e_update_vsi_stats(vsi);
1198 #ifdef I40E_FCOE
1199         i40e_update_fcoe_stats(vsi);
1200 #endif
1201 }
1202
1203 /**
1204  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1205  * @vsi: the VSI to be searched
1206  * @macaddr: the MAC address
1207  * @vlan: the vlan
1208  * @is_vf: make sure its a VF filter, else doesn't matter
1209  * @is_netdev: make sure its a netdev filter, else doesn't matter
1210  *
1211  * Returns ptr to the filter object or NULL
1212  **/
1213 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1214                                                 u8 *macaddr, s16 vlan,
1215                                                 bool is_vf, bool is_netdev)
1216 {
1217         struct i40e_mac_filter *f;
1218
1219         if (!vsi || !macaddr)
1220                 return NULL;
1221
1222         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1223                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1224                     (vlan == f->vlan)    &&
1225                     (!is_vf || f->is_vf) &&
1226                     (!is_netdev || f->is_netdev))
1227                         return f;
1228         }
1229         return NULL;
1230 }
1231
1232 /**
1233  * i40e_find_mac - Find a mac addr in the macvlan filters list
1234  * @vsi: the VSI to be searched
1235  * @macaddr: the MAC address we are searching for
1236  * @is_vf: make sure its a VF filter, else doesn't matter
1237  * @is_netdev: make sure its a netdev filter, else doesn't matter
1238  *
1239  * Returns the first filter with the provided MAC address or NULL if
1240  * MAC address was not found
1241  **/
1242 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1243                                       bool is_vf, bool is_netdev)
1244 {
1245         struct i40e_mac_filter *f;
1246
1247         if (!vsi || !macaddr)
1248                 return NULL;
1249
1250         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1251                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1252                     (!is_vf || f->is_vf) &&
1253                     (!is_netdev || f->is_netdev))
1254                         return f;
1255         }
1256         return NULL;
1257 }
1258
1259 /**
1260  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1261  * @vsi: the VSI to be searched
1262  *
1263  * Returns true if VSI is in vlan mode or false otherwise
1264  **/
1265 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1266 {
1267         struct i40e_mac_filter *f;
1268
1269         /* Only -1 for all the filters denotes not in vlan mode
1270          * so we have to go through all the list in order to make sure
1271          */
1272         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1273                 if (f->vlan >= 0 || vsi->info.pvid)
1274                         return true;
1275         }
1276
1277         return false;
1278 }
1279
1280 /**
1281  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1282  * @vsi: the VSI to be searched
1283  * @macaddr: the mac address to be filtered
1284  * @is_vf: true if it is a VF
1285  * @is_netdev: true if it is a netdev
1286  *
1287  * Goes through all the macvlan filters and adds a
1288  * macvlan filter for each unique vlan that already exists
1289  *
1290  * Returns first filter found on success, else NULL
1291  **/
1292 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1293                                              bool is_vf, bool is_netdev)
1294 {
1295         struct i40e_mac_filter *f;
1296
1297         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1298                 if (vsi->info.pvid)
1299                         f->vlan = le16_to_cpu(vsi->info.pvid);
1300                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1301                                       is_vf, is_netdev)) {
1302                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1303                                              is_vf, is_netdev))
1304                                 return NULL;
1305                 }
1306         }
1307
1308         return list_first_entry_or_null(&vsi->mac_filter_list,
1309                                         struct i40e_mac_filter, list);
1310 }
1311
1312 /**
1313  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1314  * @vsi: the PF Main VSI - inappropriate for any other VSI
1315  * @macaddr: the MAC address
1316  *
1317  * Some older firmware configurations set up a default promiscuous VLAN
1318  * filter that needs to be removed.
1319  **/
1320 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1321 {
1322         struct i40e_aqc_remove_macvlan_element_data element;
1323         struct i40e_pf *pf = vsi->back;
1324         i40e_status ret;
1325
1326         /* Only appropriate for the PF main VSI */
1327         if (vsi->type != I40E_VSI_MAIN)
1328                 return -EINVAL;
1329
1330         memset(&element, 0, sizeof(element));
1331         ether_addr_copy(element.mac_addr, macaddr);
1332         element.vlan_tag = 0;
1333         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1334                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1335         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1336         if (ret)
1337                 return -ENOENT;
1338
1339         return 0;
1340 }
1341
1342 /**
1343  * i40e_add_filter - Add a mac/vlan filter to the VSI
1344  * @vsi: the VSI to be searched
1345  * @macaddr: the MAC address
1346  * @vlan: the vlan
1347  * @is_vf: make sure its a VF filter, else doesn't matter
1348  * @is_netdev: make sure its a netdev filter, else doesn't matter
1349  *
1350  * Returns ptr to the filter object or NULL when no memory available.
1351  **/
1352 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1353                                         u8 *macaddr, s16 vlan,
1354                                         bool is_vf, bool is_netdev)
1355 {
1356         struct i40e_mac_filter *f;
1357
1358         if (!vsi || !macaddr)
1359                 return NULL;
1360
1361         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1362         if (!f) {
1363                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1364                 if (!f)
1365                         goto add_filter_out;
1366
1367                 ether_addr_copy(f->macaddr, macaddr);
1368                 f->vlan = vlan;
1369                 f->changed = true;
1370
1371                 INIT_LIST_HEAD(&f->list);
1372                 list_add(&f->list, &vsi->mac_filter_list);
1373         }
1374
1375         /* increment counter and add a new flag if needed */
1376         if (is_vf) {
1377                 if (!f->is_vf) {
1378                         f->is_vf = true;
1379                         f->counter++;
1380                 }
1381         } else if (is_netdev) {
1382                 if (!f->is_netdev) {
1383                         f->is_netdev = true;
1384                         f->counter++;
1385                 }
1386         } else {
1387                 f->counter++;
1388         }
1389
1390         /* changed tells sync_filters_subtask to
1391          * push the filter down to the firmware
1392          */
1393         if (f->changed) {
1394                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1395                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1396         }
1397
1398 add_filter_out:
1399         return f;
1400 }
1401
1402 /**
1403  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1404  * @vsi: the VSI to be searched
1405  * @macaddr: the MAC address
1406  * @vlan: the vlan
1407  * @is_vf: make sure it's a VF filter, else doesn't matter
1408  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1409  **/
1410 void i40e_del_filter(struct i40e_vsi *vsi,
1411                      u8 *macaddr, s16 vlan,
1412                      bool is_vf, bool is_netdev)
1413 {
1414         struct i40e_mac_filter *f;
1415
1416         if (!vsi || !macaddr)
1417                 return;
1418
1419         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1420         if (!f || f->counter == 0)
1421                 return;
1422
1423         if (is_vf) {
1424                 if (f->is_vf) {
1425                         f->is_vf = false;
1426                         f->counter--;
1427                 }
1428         } else if (is_netdev) {
1429                 if (f->is_netdev) {
1430                         f->is_netdev = false;
1431                         f->counter--;
1432                 }
1433         } else {
1434                 /* make sure we don't remove a filter in use by VF or netdev */
1435                 int min_f = 0;
1436                 min_f += (f->is_vf ? 1 : 0);
1437                 min_f += (f->is_netdev ? 1 : 0);
1438
1439                 if (f->counter > min_f)
1440                         f->counter--;
1441         }
1442
1443         /* counter == 0 tells sync_filters_subtask to
1444          * remove the filter from the firmware's list
1445          */
1446         if (f->counter == 0) {
1447                 f->changed = true;
1448                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1449                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1450         }
1451 }
1452
1453 /**
1454  * i40e_set_mac - NDO callback to set mac address
1455  * @netdev: network interface device structure
1456  * @p: pointer to an address structure
1457  *
1458  * Returns 0 on success, negative on failure
1459  **/
1460 #ifdef I40E_FCOE
1461 int i40e_set_mac(struct net_device *netdev, void *p)
1462 #else
1463 static int i40e_set_mac(struct net_device *netdev, void *p)
1464 #endif
1465 {
1466         struct i40e_netdev_priv *np = netdev_priv(netdev);
1467         struct i40e_vsi *vsi = np->vsi;
1468         struct i40e_pf *pf = vsi->back;
1469         struct i40e_hw *hw = &pf->hw;
1470         struct sockaddr *addr = p;
1471         struct i40e_mac_filter *f;
1472
1473         if (!is_valid_ether_addr(addr->sa_data))
1474                 return -EADDRNOTAVAIL;
1475
1476         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1477                 netdev_info(netdev, "already using mac address %pM\n",
1478                             addr->sa_data);
1479                 return 0;
1480         }
1481
1482         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1483             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1484                 return -EADDRNOTAVAIL;
1485
1486         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1487                 netdev_info(netdev, "returning to hw mac address %pM\n",
1488                             hw->mac.addr);
1489         else
1490                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1491
1492         if (vsi->type == I40E_VSI_MAIN) {
1493                 i40e_status ret;
1494                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1495                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1496                                                 addr->sa_data, NULL);
1497                 if (ret) {
1498                         netdev_info(netdev,
1499                                     "Addr change for Main VSI failed: %d\n",
1500                                     ret);
1501                         return -EADDRNOTAVAIL;
1502                 }
1503         }
1504
1505         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1506                 struct i40e_aqc_remove_macvlan_element_data element;
1507
1508                 memset(&element, 0, sizeof(element));
1509                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1510                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1511                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1512         } else {
1513                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1514                                 false, false);
1515         }
1516
1517         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1518                 struct i40e_aqc_add_macvlan_element_data element;
1519
1520                 memset(&element, 0, sizeof(element));
1521                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1522                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1523                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1524         } else {
1525                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1526                                     false, false);
1527                 if (f)
1528                         f->is_laa = true;
1529         }
1530
1531         i40e_sync_vsi_filters(vsi, false);
1532         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1533
1534         return 0;
1535 }
1536
1537 /**
1538  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1539  * @vsi: the VSI being setup
1540  * @ctxt: VSI context structure
1541  * @enabled_tc: Enabled TCs bitmap
1542  * @is_add: True if called before Add VSI
1543  *
1544  * Setup VSI queue mapping for enabled traffic classes.
1545  **/
1546 #ifdef I40E_FCOE
1547 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1548                               struct i40e_vsi_context *ctxt,
1549                               u8 enabled_tc,
1550                               bool is_add)
1551 #else
1552 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1553                                      struct i40e_vsi_context *ctxt,
1554                                      u8 enabled_tc,
1555                                      bool is_add)
1556 #endif
1557 {
1558         struct i40e_pf *pf = vsi->back;
1559         u16 sections = 0;
1560         u8 netdev_tc = 0;
1561         u16 numtc = 0;
1562         u16 qcount;
1563         u8 offset;
1564         u16 qmap;
1565         int i;
1566         u16 num_tc_qps = 0;
1567
1568         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1569         offset = 0;
1570
1571         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1572                 /* Find numtc from enabled TC bitmap */
1573                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1574                         if (enabled_tc & BIT_ULL(i)) /* TC is enabled */
1575                                 numtc++;
1576                 }
1577                 if (!numtc) {
1578                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1579                         numtc = 1;
1580                 }
1581         } else {
1582                 /* At least TC0 is enabled in case of non-DCB case */
1583                 numtc = 1;
1584         }
1585
1586         vsi->tc_config.numtc = numtc;
1587         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1588         /* Number of queues per enabled TC */
1589         /* In MFP case we can have a much lower count of MSIx
1590          * vectors available and so we need to lower the used
1591          * q count.
1592          */
1593         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1594                 qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
1595         else
1596                 qcount = vsi->alloc_queue_pairs;
1597         num_tc_qps = qcount / numtc;
1598         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1599
1600         /* Setup queue offset/count for all TCs for given VSI */
1601         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1602                 /* See if the given TC is enabled for the given VSI */
1603                 if (vsi->tc_config.enabled_tc & BIT_ULL(i)) {
1604                         /* TC is enabled */
1605                         int pow, num_qps;
1606
1607                         switch (vsi->type) {
1608                         case I40E_VSI_MAIN:
1609                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1610                                 break;
1611 #ifdef I40E_FCOE
1612                         case I40E_VSI_FCOE:
1613                                 qcount = num_tc_qps;
1614                                 break;
1615 #endif
1616                         case I40E_VSI_FDIR:
1617                         case I40E_VSI_SRIOV:
1618                         case I40E_VSI_VMDQ2:
1619                         default:
1620                                 qcount = num_tc_qps;
1621                                 WARN_ON(i != 0);
1622                                 break;
1623                         }
1624                         vsi->tc_config.tc_info[i].qoffset = offset;
1625                         vsi->tc_config.tc_info[i].qcount = qcount;
1626
1627                         /* find the next higher power-of-2 of num queue pairs */
1628                         num_qps = qcount;
1629                         pow = 0;
1630                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1631                                 pow++;
1632                                 num_qps >>= 1;
1633                         }
1634
1635                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1636                         qmap =
1637                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1638                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1639
1640                         offset += qcount;
1641                 } else {
1642                         /* TC is not enabled so set the offset to
1643                          * default queue and allocate one queue
1644                          * for the given TC.
1645                          */
1646                         vsi->tc_config.tc_info[i].qoffset = 0;
1647                         vsi->tc_config.tc_info[i].qcount = 1;
1648                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1649
1650                         qmap = 0;
1651                 }
1652                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1653         }
1654
1655         /* Set actual Tx/Rx queue pairs */
1656         vsi->num_queue_pairs = offset;
1657         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1658                 if (vsi->req_queue_pairs > 0)
1659                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1660                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1661                         vsi->num_queue_pairs = pf->num_lan_msix;
1662         }
1663
1664         /* Scheduler section valid can only be set for ADD VSI */
1665         if (is_add) {
1666                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1667
1668                 ctxt->info.up_enable_bits = enabled_tc;
1669         }
1670         if (vsi->type == I40E_VSI_SRIOV) {
1671                 ctxt->info.mapping_flags |=
1672                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1673                 for (i = 0; i < vsi->num_queue_pairs; i++)
1674                         ctxt->info.queue_mapping[i] =
1675                                                cpu_to_le16(vsi->base_queue + i);
1676         } else {
1677                 ctxt->info.mapping_flags |=
1678                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1679                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1680         }
1681         ctxt->info.valid_sections |= cpu_to_le16(sections);
1682 }
1683
1684 /**
1685  * i40e_set_rx_mode - NDO callback to set the netdev filters
1686  * @netdev: network interface device structure
1687  **/
1688 #ifdef I40E_FCOE
1689 void i40e_set_rx_mode(struct net_device *netdev)
1690 #else
1691 static void i40e_set_rx_mode(struct net_device *netdev)
1692 #endif
1693 {
1694         struct i40e_netdev_priv *np = netdev_priv(netdev);
1695         struct i40e_mac_filter *f, *ftmp;
1696         struct i40e_vsi *vsi = np->vsi;
1697         struct netdev_hw_addr *uca;
1698         struct netdev_hw_addr *mca;
1699         struct netdev_hw_addr *ha;
1700
1701         /* add addr if not already in the filter list */
1702         netdev_for_each_uc_addr(uca, netdev) {
1703                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1704                         if (i40e_is_vsi_in_vlan(vsi))
1705                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1706                                                      false, true);
1707                         else
1708                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1709                                                 false, true);
1710                 }
1711         }
1712
1713         netdev_for_each_mc_addr(mca, netdev) {
1714                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1715                         if (i40e_is_vsi_in_vlan(vsi))
1716                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1717                                                      false, true);
1718                         else
1719                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1720                                                 false, true);
1721                 }
1722         }
1723
1724         /* remove filter if not in netdev list */
1725         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1726                 bool found = false;
1727
1728                 if (!f->is_netdev)
1729                         continue;
1730
1731                 if (is_multicast_ether_addr(f->macaddr)) {
1732                         netdev_for_each_mc_addr(mca, netdev) {
1733                                 if (ether_addr_equal(mca->addr, f->macaddr)) {
1734                                         found = true;
1735                                         break;
1736                                 }
1737                         }
1738                 } else {
1739                         netdev_for_each_uc_addr(uca, netdev) {
1740                                 if (ether_addr_equal(uca->addr, f->macaddr)) {
1741                                         found = true;
1742                                         break;
1743                                 }
1744                         }
1745
1746                         for_each_dev_addr(netdev, ha) {
1747                                 if (ether_addr_equal(ha->addr, f->macaddr)) {
1748                                         found = true;
1749                                         break;
1750                                 }
1751                         }
1752                 }
1753                 if (!found)
1754                         i40e_del_filter(
1755                            vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1756         }
1757
1758         /* check for other flag changes */
1759         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1760                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1761                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1762         }
1763 }
1764
1765 /**
1766  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1767  * @vsi: ptr to the VSI
1768  * @grab_rtnl: whether RTNL needs to be grabbed
1769  *
1770  * Push any outstanding VSI filter changes through the AdminQ.
1771  *
1772  * Returns 0 or error value
1773  **/
1774 int i40e_sync_vsi_filters(struct i40e_vsi *vsi, bool grab_rtnl)
1775 {
1776         struct i40e_mac_filter *f, *ftmp;
1777         bool promisc_forced_on = false;
1778         bool add_happened = false;
1779         int filter_list_len = 0;
1780         u32 changed_flags = 0;
1781         i40e_status ret = 0;
1782         struct i40e_pf *pf;
1783         int num_add = 0;
1784         int num_del = 0;
1785         int aq_err = 0;
1786         u16 cmd_flags;
1787
1788         /* empty array typed pointers, kcalloc later */
1789         struct i40e_aqc_add_macvlan_element_data *add_list;
1790         struct i40e_aqc_remove_macvlan_element_data *del_list;
1791
1792         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1793                 usleep_range(1000, 2000);
1794         pf = vsi->back;
1795
1796         if (vsi->netdev) {
1797                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1798                 vsi->current_netdev_flags = vsi->netdev->flags;
1799         }
1800
1801         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1802                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1803
1804                 filter_list_len = pf->hw.aq.asq_buf_size /
1805                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1806                 del_list = kcalloc(filter_list_len,
1807                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1808                             GFP_KERNEL);
1809                 if (!del_list)
1810                         return -ENOMEM;
1811
1812                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1813                         if (!f->changed)
1814                                 continue;
1815
1816                         if (f->counter != 0)
1817                                 continue;
1818                         f->changed = false;
1819                         cmd_flags = 0;
1820
1821                         /* add to delete list */
1822                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1823                         del_list[num_del].vlan_tag =
1824                                 cpu_to_le16((u16)(f->vlan ==
1825                                             I40E_VLAN_ANY ? 0 : f->vlan));
1826
1827                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1828                         del_list[num_del].flags = cmd_flags;
1829                         num_del++;
1830
1831                         /* unlink from filter list */
1832                         list_del(&f->list);
1833                         kfree(f);
1834
1835                         /* flush a full buffer */
1836                         if (num_del == filter_list_len) {
1837                                 ret = i40e_aq_remove_macvlan(&pf->hw,
1838                                                   vsi->seid, del_list, num_del,
1839                                                   NULL);
1840                                 aq_err = pf->hw.aq.asq_last_status;
1841                                 num_del = 0;
1842                                 memset(del_list, 0, sizeof(*del_list));
1843
1844                                 if (ret && aq_err != I40E_AQ_RC_ENOENT)
1845                                         dev_info(&pf->pdev->dev,
1846                                                  "ignoring delete macvlan error, err %s, aq_err %s while flushing a full buffer\n",
1847                                                  i40e_stat_str(&pf->hw, ret),
1848                                                  i40e_aq_str(&pf->hw, aq_err));
1849                         }
1850                 }
1851                 if (num_del) {
1852                         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1853                                                      del_list, num_del, NULL);
1854                         aq_err = pf->hw.aq.asq_last_status;
1855                         num_del = 0;
1856
1857                         if (ret && aq_err != I40E_AQ_RC_ENOENT)
1858                                 dev_info(&pf->pdev->dev,
1859                                          "ignoring delete macvlan error, err %s aq_err %s\n",
1860                                          i40e_stat_str(&pf->hw, ret),
1861                                          i40e_aq_str(&pf->hw, aq_err));
1862                 }
1863
1864                 kfree(del_list);
1865                 del_list = NULL;
1866
1867                 /* do all the adds now */
1868                 filter_list_len = pf->hw.aq.asq_buf_size /
1869                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1870                 add_list = kcalloc(filter_list_len,
1871                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1872                                GFP_KERNEL);
1873                 if (!add_list)
1874                         return -ENOMEM;
1875
1876                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1877                         if (!f->changed)
1878                                 continue;
1879
1880                         if (f->counter == 0)
1881                                 continue;
1882                         f->changed = false;
1883                         add_happened = true;
1884                         cmd_flags = 0;
1885
1886                         /* add to add array */
1887                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
1888                         add_list[num_add].vlan_tag =
1889                                 cpu_to_le16(
1890                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1891                         add_list[num_add].queue_number = 0;
1892
1893                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1894                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1895                         num_add++;
1896
1897                         /* flush a full buffer */
1898                         if (num_add == filter_list_len) {
1899                                 ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1900                                                           add_list, num_add,
1901                                                           NULL);
1902                                 aq_err = pf->hw.aq.asq_last_status;
1903                                 num_add = 0;
1904
1905                                 if (ret)
1906                                         break;
1907                                 memset(add_list, 0, sizeof(*add_list));
1908                         }
1909                 }
1910                 if (num_add) {
1911                         ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1912                                                   add_list, num_add, NULL);
1913                         aq_err = pf->hw.aq.asq_last_status;
1914                         num_add = 0;
1915                 }
1916                 kfree(add_list);
1917                 add_list = NULL;
1918
1919                 if (add_happened && ret && aq_err != I40E_AQ_RC_EINVAL) {
1920                         dev_info(&pf->pdev->dev,
1921                                  "add filter failed, err %s aq_err %s\n",
1922                                  i40e_stat_str(&pf->hw, ret),
1923                                  i40e_aq_str(&pf->hw, aq_err));
1924                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1925                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1926                                       &vsi->state)) {
1927                                 promisc_forced_on = true;
1928                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1929                                         &vsi->state);
1930                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1931                         }
1932                 }
1933         }
1934
1935         /* check for changes in promiscuous modes */
1936         if (changed_flags & IFF_ALLMULTI) {
1937                 bool cur_multipromisc;
1938                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1939                 ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1940                                                             vsi->seid,
1941                                                             cur_multipromisc,
1942                                                             NULL);
1943                 if (ret)
1944                         dev_info(&pf->pdev->dev,
1945                                  "set multi promisc failed, err %s aq_err %s\n",
1946                                  i40e_stat_str(&pf->hw, ret),
1947                                  i40e_aq_str(&pf->hw,
1948                                              pf->hw.aq.asq_last_status));
1949         }
1950         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1951                 bool cur_promisc;
1952                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1953                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1954                                         &vsi->state));
1955                 if (vsi->type == I40E_VSI_MAIN && pf->lan_veb != I40E_NO_VEB) {
1956                         /* set defport ON for Main VSI instead of true promisc
1957                          * this way we will get all unicast/multicast and VLAN
1958                          * promisc behavior but will not get VF or VMDq traffic
1959                          * replicated on the Main VSI.
1960                          */
1961                         if (pf->cur_promisc != cur_promisc) {
1962                                 pf->cur_promisc = cur_promisc;
1963                                 if (grab_rtnl)
1964                                         i40e_do_reset_safe(pf,
1965                                                 BIT(__I40E_PF_RESET_REQUESTED));
1966                                 else
1967                                         i40e_do_reset(pf,
1968                                                 BIT(__I40E_PF_RESET_REQUESTED));
1969                         }
1970                 } else {
1971                         ret = i40e_aq_set_vsi_unicast_promiscuous(
1972                                                           &vsi->back->hw,
1973                                                           vsi->seid,
1974                                                           cur_promisc, NULL);
1975                         if (ret)
1976                                 dev_info(&pf->pdev->dev,
1977                                          "set unicast promisc failed, err %d, aq_err %d\n",
1978                                          ret, pf->hw.aq.asq_last_status);
1979                         ret = i40e_aq_set_vsi_multicast_promiscuous(
1980                                                           &vsi->back->hw,
1981                                                           vsi->seid,
1982                                                           cur_promisc, NULL);
1983                         if (ret)
1984                                 dev_info(&pf->pdev->dev,
1985                                          "set multicast promisc failed, err %d, aq_err %d\n",
1986                                          ret, pf->hw.aq.asq_last_status);
1987                 }
1988                 ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1989                                                 vsi->seid,
1990                                                 cur_promisc, NULL);
1991                 if (ret)
1992                         dev_info(&pf->pdev->dev,
1993                                  "set brdcast promisc failed, err %s, aq_err %s\n",
1994                                  i40e_stat_str(&pf->hw, ret),
1995                                  i40e_aq_str(&pf->hw,
1996                                              pf->hw.aq.asq_last_status));
1997         }
1998
1999         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2000         return 0;
2001 }
2002
2003 /**
2004  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2005  * @pf: board private structure
2006  **/
2007 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2008 {
2009         int v;
2010
2011         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2012                 return;
2013         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2014
2015         for (v = 0; v < pf->num_alloc_vsi; v++) {
2016                 if (pf->vsi[v] &&
2017                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
2018                         i40e_sync_vsi_filters(pf->vsi[v], true);
2019         }
2020 }
2021
2022 /**
2023  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2024  * @netdev: network interface device structure
2025  * @new_mtu: new value for maximum frame size
2026  *
2027  * Returns 0 on success, negative on failure
2028  **/
2029 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2030 {
2031         struct i40e_netdev_priv *np = netdev_priv(netdev);
2032         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2033         struct i40e_vsi *vsi = np->vsi;
2034
2035         /* MTU < 68 is an error and causes problems on some kernels */
2036         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2037                 return -EINVAL;
2038
2039         netdev_info(netdev, "changing MTU from %d to %d\n",
2040                     netdev->mtu, new_mtu);
2041         netdev->mtu = new_mtu;
2042         if (netif_running(netdev))
2043                 i40e_vsi_reinit_locked(vsi);
2044
2045         return 0;
2046 }
2047
2048 /**
2049  * i40e_ioctl - Access the hwtstamp interface
2050  * @netdev: network interface device structure
2051  * @ifr: interface request data
2052  * @cmd: ioctl command
2053  **/
2054 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2055 {
2056         struct i40e_netdev_priv *np = netdev_priv(netdev);
2057         struct i40e_pf *pf = np->vsi->back;
2058
2059         switch (cmd) {
2060         case SIOCGHWTSTAMP:
2061                 return i40e_ptp_get_ts_config(pf, ifr);
2062         case SIOCSHWTSTAMP:
2063                 return i40e_ptp_set_ts_config(pf, ifr);
2064         default:
2065                 return -EOPNOTSUPP;
2066         }
2067 }
2068
2069 /**
2070  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2071  * @vsi: the vsi being adjusted
2072  **/
2073 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2074 {
2075         struct i40e_vsi_context ctxt;
2076         i40e_status ret;
2077
2078         if ((vsi->info.valid_sections &
2079              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2080             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2081                 return;  /* already enabled */
2082
2083         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2084         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2085                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2086
2087         ctxt.seid = vsi->seid;
2088         ctxt.info = vsi->info;
2089         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2090         if (ret) {
2091                 dev_info(&vsi->back->pdev->dev,
2092                          "update vlan stripping failed, err %s aq_err %s\n",
2093                          i40e_stat_str(&vsi->back->hw, ret),
2094                          i40e_aq_str(&vsi->back->hw,
2095                                      vsi->back->hw.aq.asq_last_status));
2096         }
2097 }
2098
2099 /**
2100  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2101  * @vsi: the vsi being adjusted
2102  **/
2103 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2104 {
2105         struct i40e_vsi_context ctxt;
2106         i40e_status ret;
2107
2108         if ((vsi->info.valid_sections &
2109              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2110             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2111              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2112                 return;  /* already disabled */
2113
2114         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2115         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2116                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2117
2118         ctxt.seid = vsi->seid;
2119         ctxt.info = vsi->info;
2120         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2121         if (ret) {
2122                 dev_info(&vsi->back->pdev->dev,
2123                          "update vlan stripping failed, err %s aq_err %s\n",
2124                          i40e_stat_str(&vsi->back->hw, ret),
2125                          i40e_aq_str(&vsi->back->hw,
2126                                      vsi->back->hw.aq.asq_last_status));
2127         }
2128 }
2129
2130 /**
2131  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2132  * @netdev: network interface to be adjusted
2133  * @features: netdev features to test if VLAN offload is enabled or not
2134  **/
2135 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2136 {
2137         struct i40e_netdev_priv *np = netdev_priv(netdev);
2138         struct i40e_vsi *vsi = np->vsi;
2139
2140         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2141                 i40e_vlan_stripping_enable(vsi);
2142         else
2143                 i40e_vlan_stripping_disable(vsi);
2144 }
2145
2146 /**
2147  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2148  * @vsi: the vsi being configured
2149  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2150  **/
2151 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2152 {
2153         struct i40e_mac_filter *f, *add_f;
2154         bool is_netdev, is_vf;
2155
2156         is_vf = (vsi->type == I40E_VSI_SRIOV);
2157         is_netdev = !!(vsi->netdev);
2158
2159         if (is_netdev) {
2160                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2161                                         is_vf, is_netdev);
2162                 if (!add_f) {
2163                         dev_info(&vsi->back->pdev->dev,
2164                                  "Could not add vlan filter %d for %pM\n",
2165                                  vid, vsi->netdev->dev_addr);
2166                         return -ENOMEM;
2167                 }
2168         }
2169
2170         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2171                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2172                 if (!add_f) {
2173                         dev_info(&vsi->back->pdev->dev,
2174                                  "Could not add vlan filter %d for %pM\n",
2175                                  vid, f->macaddr);
2176                         return -ENOMEM;
2177                 }
2178         }
2179
2180         /* Now if we add a vlan tag, make sure to check if it is the first
2181          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2182          * with 0, so we now accept untagged and specified tagged traffic
2183          * (and not any taged and untagged)
2184          */
2185         if (vid > 0) {
2186                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2187                                                   I40E_VLAN_ANY,
2188                                                   is_vf, is_netdev)) {
2189                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2190                                         I40E_VLAN_ANY, is_vf, is_netdev);
2191                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2192                                                 is_vf, is_netdev);
2193                         if (!add_f) {
2194                                 dev_info(&vsi->back->pdev->dev,
2195                                          "Could not add filter 0 for %pM\n",
2196                                          vsi->netdev->dev_addr);
2197                                 return -ENOMEM;
2198                         }
2199                 }
2200         }
2201
2202         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2203         if (vid > 0 && !vsi->info.pvid) {
2204                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2205                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2206                                              is_vf, is_netdev)) {
2207                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2208                                                 is_vf, is_netdev);
2209                                 add_f = i40e_add_filter(vsi, f->macaddr,
2210                                                         0, is_vf, is_netdev);
2211                                 if (!add_f) {
2212                                         dev_info(&vsi->back->pdev->dev,
2213                                                  "Could not add filter 0 for %pM\n",
2214                                                  f->macaddr);
2215                                         return -ENOMEM;
2216                                 }
2217                         }
2218                 }
2219         }
2220
2221         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2222             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2223                 return 0;
2224
2225         return i40e_sync_vsi_filters(vsi, false);
2226 }
2227
2228 /**
2229  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2230  * @vsi: the vsi being configured
2231  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2232  *
2233  * Return: 0 on success or negative otherwise
2234  **/
2235 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2236 {
2237         struct net_device *netdev = vsi->netdev;
2238         struct i40e_mac_filter *f, *add_f;
2239         bool is_vf, is_netdev;
2240         int filter_count = 0;
2241
2242         is_vf = (vsi->type == I40E_VSI_SRIOV);
2243         is_netdev = !!(netdev);
2244
2245         if (is_netdev)
2246                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2247
2248         list_for_each_entry(f, &vsi->mac_filter_list, list)
2249                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2250
2251         /* go through all the filters for this VSI and if there is only
2252          * vid == 0 it means there are no other filters, so vid 0 must
2253          * be replaced with -1. This signifies that we should from now
2254          * on accept any traffic (with any tag present, or untagged)
2255          */
2256         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2257                 if (is_netdev) {
2258                         if (f->vlan &&
2259                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2260                                 filter_count++;
2261                 }
2262
2263                 if (f->vlan)
2264                         filter_count++;
2265         }
2266
2267         if (!filter_count && is_netdev) {
2268                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2269                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2270                                     is_vf, is_netdev);
2271                 if (!f) {
2272                         dev_info(&vsi->back->pdev->dev,
2273                                  "Could not add filter %d for %pM\n",
2274                                  I40E_VLAN_ANY, netdev->dev_addr);
2275                         return -ENOMEM;
2276                 }
2277         }
2278
2279         if (!filter_count) {
2280                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2281                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2282                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2283                                             is_vf, is_netdev);
2284                         if (!add_f) {
2285                                 dev_info(&vsi->back->pdev->dev,
2286                                          "Could not add filter %d for %pM\n",
2287                                          I40E_VLAN_ANY, f->macaddr);
2288                                 return -ENOMEM;
2289                         }
2290                 }
2291         }
2292
2293         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2294             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2295                 return 0;
2296
2297         return i40e_sync_vsi_filters(vsi, false);
2298 }
2299
2300 /**
2301  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2302  * @netdev: network interface to be adjusted
2303  * @vid: vlan id to be added
2304  *
2305  * net_device_ops implementation for adding vlan ids
2306  **/
2307 #ifdef I40E_FCOE
2308 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2309                          __always_unused __be16 proto, u16 vid)
2310 #else
2311 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2312                                 __always_unused __be16 proto, u16 vid)
2313 #endif
2314 {
2315         struct i40e_netdev_priv *np = netdev_priv(netdev);
2316         struct i40e_vsi *vsi = np->vsi;
2317         int ret = 0;
2318
2319         if (vid > 4095)
2320                 return -EINVAL;
2321
2322         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2323
2324         /* If the network stack called us with vid = 0 then
2325          * it is asking to receive priority tagged packets with
2326          * vlan id 0.  Our HW receives them by default when configured
2327          * to receive untagged packets so there is no need to add an
2328          * extra filter for vlan 0 tagged packets.
2329          */
2330         if (vid)
2331                 ret = i40e_vsi_add_vlan(vsi, vid);
2332
2333         if (!ret && (vid < VLAN_N_VID))
2334                 set_bit(vid, vsi->active_vlans);
2335
2336         return ret;
2337 }
2338
2339 /**
2340  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2341  * @netdev: network interface to be adjusted
2342  * @vid: vlan id to be removed
2343  *
2344  * net_device_ops implementation for removing vlan ids
2345  **/
2346 #ifdef I40E_FCOE
2347 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2348                           __always_unused __be16 proto, u16 vid)
2349 #else
2350 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2351                                  __always_unused __be16 proto, u16 vid)
2352 #endif
2353 {
2354         struct i40e_netdev_priv *np = netdev_priv(netdev);
2355         struct i40e_vsi *vsi = np->vsi;
2356
2357         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2358
2359         /* return code is ignored as there is nothing a user
2360          * can do about failure to remove and a log message was
2361          * already printed from the other function
2362          */
2363         i40e_vsi_kill_vlan(vsi, vid);
2364
2365         clear_bit(vid, vsi->active_vlans);
2366
2367         return 0;
2368 }
2369
2370 /**
2371  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2372  * @vsi: the vsi being brought back up
2373  **/
2374 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2375 {
2376         u16 vid;
2377
2378         if (!vsi->netdev)
2379                 return;
2380
2381         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2382
2383         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2384                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2385                                      vid);
2386 }
2387
2388 /**
2389  * i40e_vsi_add_pvid - Add pvid for the VSI
2390  * @vsi: the vsi being adjusted
2391  * @vid: the vlan id to set as a PVID
2392  **/
2393 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2394 {
2395         struct i40e_vsi_context ctxt;
2396         i40e_status ret;
2397
2398         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2399         vsi->info.pvid = cpu_to_le16(vid);
2400         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2401                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2402                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2403
2404         ctxt.seid = vsi->seid;
2405         ctxt.info = vsi->info;
2406         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2407         if (ret) {
2408                 dev_info(&vsi->back->pdev->dev,
2409                          "add pvid failed, err %s aq_err %s\n",
2410                          i40e_stat_str(&vsi->back->hw, ret),
2411                          i40e_aq_str(&vsi->back->hw,
2412                                      vsi->back->hw.aq.asq_last_status));
2413                 return -ENOENT;
2414         }
2415
2416         return 0;
2417 }
2418
2419 /**
2420  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2421  * @vsi: the vsi being adjusted
2422  *
2423  * Just use the vlan_rx_register() service to put it back to normal
2424  **/
2425 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2426 {
2427         i40e_vlan_stripping_disable(vsi);
2428
2429         vsi->info.pvid = 0;
2430 }
2431
2432 /**
2433  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2434  * @vsi: ptr to the VSI
2435  *
2436  * If this function returns with an error, then it's possible one or
2437  * more of the rings is populated (while the rest are not).  It is the
2438  * callers duty to clean those orphaned rings.
2439  *
2440  * Return 0 on success, negative on failure
2441  **/
2442 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2443 {
2444         int i, err = 0;
2445
2446         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2447                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2448
2449         return err;
2450 }
2451
2452 /**
2453  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2454  * @vsi: ptr to the VSI
2455  *
2456  * Free VSI's transmit software resources
2457  **/
2458 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2459 {
2460         int i;
2461
2462         if (!vsi->tx_rings)
2463                 return;
2464
2465         for (i = 0; i < vsi->num_queue_pairs; i++)
2466                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2467                         i40e_free_tx_resources(vsi->tx_rings[i]);
2468 }
2469
2470 /**
2471  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2472  * @vsi: ptr to the VSI
2473  *
2474  * If this function returns with an error, then it's possible one or
2475  * more of the rings is populated (while the rest are not).  It is the
2476  * callers duty to clean those orphaned rings.
2477  *
2478  * Return 0 on success, negative on failure
2479  **/
2480 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2481 {
2482         int i, err = 0;
2483
2484         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2485                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2486 #ifdef I40E_FCOE
2487         i40e_fcoe_setup_ddp_resources(vsi);
2488 #endif
2489         return err;
2490 }
2491
2492 /**
2493  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2494  * @vsi: ptr to the VSI
2495  *
2496  * Free all receive software resources
2497  **/
2498 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2499 {
2500         int i;
2501
2502         if (!vsi->rx_rings)
2503                 return;
2504
2505         for (i = 0; i < vsi->num_queue_pairs; i++)
2506                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2507                         i40e_free_rx_resources(vsi->rx_rings[i]);
2508 #ifdef I40E_FCOE
2509         i40e_fcoe_free_ddp_resources(vsi);
2510 #endif
2511 }
2512
2513 /**
2514  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2515  * @ring: The Tx ring to configure
2516  *
2517  * This enables/disables XPS for a given Tx descriptor ring
2518  * based on the TCs enabled for the VSI that ring belongs to.
2519  **/
2520 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2521 {
2522         struct i40e_vsi *vsi = ring->vsi;
2523         cpumask_var_t mask;
2524
2525         if (!ring->q_vector || !ring->netdev)
2526                 return;
2527
2528         /* Single TC mode enable XPS */
2529         if (vsi->tc_config.numtc <= 1) {
2530                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2531                         netif_set_xps_queue(ring->netdev,
2532                                             &ring->q_vector->affinity_mask,
2533                                             ring->queue_index);
2534         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2535                 /* Disable XPS to allow selection based on TC */
2536                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2537                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2538                 free_cpumask_var(mask);
2539         }
2540 }
2541
2542 /**
2543  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2544  * @ring: The Tx ring to configure
2545  *
2546  * Configure the Tx descriptor ring in the HMC context.
2547  **/
2548 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2549 {
2550         struct i40e_vsi *vsi = ring->vsi;
2551         u16 pf_q = vsi->base_queue + ring->queue_index;
2552         struct i40e_hw *hw = &vsi->back->hw;
2553         struct i40e_hmc_obj_txq tx_ctx;
2554         i40e_status err = 0;
2555         u32 qtx_ctl = 0;
2556
2557         /* some ATR related tx ring init */
2558         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2559                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2560                 ring->atr_count = 0;
2561         } else {
2562                 ring->atr_sample_rate = 0;
2563         }
2564
2565         /* configure XPS */
2566         i40e_config_xps_tx_ring(ring);
2567
2568         /* clear the context structure first */
2569         memset(&tx_ctx, 0, sizeof(tx_ctx));
2570
2571         tx_ctx.new_context = 1;
2572         tx_ctx.base = (ring->dma / 128);
2573         tx_ctx.qlen = ring->count;
2574         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2575                                                I40E_FLAG_FD_ATR_ENABLED));
2576 #ifdef I40E_FCOE
2577         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2578 #endif
2579         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2580         /* FDIR VSI tx ring can still use RS bit and writebacks */
2581         if (vsi->type != I40E_VSI_FDIR)
2582                 tx_ctx.head_wb_ena = 1;
2583         tx_ctx.head_wb_addr = ring->dma +
2584                               (ring->count * sizeof(struct i40e_tx_desc));
2585
2586         /* As part of VSI creation/update, FW allocates certain
2587          * Tx arbitration queue sets for each TC enabled for
2588          * the VSI. The FW returns the handles to these queue
2589          * sets as part of the response buffer to Add VSI,
2590          * Update VSI, etc. AQ commands. It is expected that
2591          * these queue set handles be associated with the Tx
2592          * queues by the driver as part of the TX queue context
2593          * initialization. This has to be done regardless of
2594          * DCB as by default everything is mapped to TC0.
2595          */
2596         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2597         tx_ctx.rdylist_act = 0;
2598
2599         /* clear the context in the HMC */
2600         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2601         if (err) {
2602                 dev_info(&vsi->back->pdev->dev,
2603                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2604                          ring->queue_index, pf_q, err);
2605                 return -ENOMEM;
2606         }
2607
2608         /* set the context in the HMC */
2609         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2610         if (err) {
2611                 dev_info(&vsi->back->pdev->dev,
2612                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2613                          ring->queue_index, pf_q, err);
2614                 return -ENOMEM;
2615         }
2616
2617         /* Now associate this queue with this PCI function */
2618         if (vsi->type == I40E_VSI_VMDQ2) {
2619                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2620                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2621                            I40E_QTX_CTL_VFVM_INDX_MASK;
2622         } else {
2623                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2624         }
2625
2626         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2627                     I40E_QTX_CTL_PF_INDX_MASK);
2628         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2629         i40e_flush(hw);
2630
2631         /* cache tail off for easier writes later */
2632         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2633
2634         return 0;
2635 }
2636
2637 /**
2638  * i40e_configure_rx_ring - Configure a receive ring context
2639  * @ring: The Rx ring to configure
2640  *
2641  * Configure the Rx descriptor ring in the HMC context.
2642  **/
2643 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2644 {
2645         struct i40e_vsi *vsi = ring->vsi;
2646         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2647         u16 pf_q = vsi->base_queue + ring->queue_index;
2648         struct i40e_hw *hw = &vsi->back->hw;
2649         struct i40e_hmc_obj_rxq rx_ctx;
2650         i40e_status err = 0;
2651
2652         ring->state = 0;
2653
2654         /* clear the context structure first */
2655         memset(&rx_ctx, 0, sizeof(rx_ctx));
2656
2657         ring->rx_buf_len = vsi->rx_buf_len;
2658         ring->rx_hdr_len = vsi->rx_hdr_len;
2659
2660         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2661         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2662
2663         rx_ctx.base = (ring->dma / 128);
2664         rx_ctx.qlen = ring->count;
2665
2666         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2667                 set_ring_16byte_desc_enabled(ring);
2668                 rx_ctx.dsize = 0;
2669         } else {
2670                 rx_ctx.dsize = 1;
2671         }
2672
2673         rx_ctx.dtype = vsi->dtype;
2674         if (vsi->dtype) {
2675                 set_ring_ps_enabled(ring);
2676                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2677                                   I40E_RX_SPLIT_IP      |
2678                                   I40E_RX_SPLIT_TCP_UDP |
2679                                   I40E_RX_SPLIT_SCTP;
2680         } else {
2681                 rx_ctx.hsplit_0 = 0;
2682         }
2683
2684         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2685                                   (chain_len * ring->rx_buf_len));
2686         if (hw->revision_id == 0)
2687                 rx_ctx.lrxqthresh = 0;
2688         else
2689                 rx_ctx.lrxqthresh = 2;
2690         rx_ctx.crcstrip = 1;
2691         rx_ctx.l2tsel = 1;
2692         rx_ctx.showiv = 1;
2693 #ifdef I40E_FCOE
2694         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2695 #endif
2696         /* set the prefena field to 1 because the manual says to */
2697         rx_ctx.prefena = 1;
2698
2699         /* clear the context in the HMC */
2700         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2701         if (err) {
2702                 dev_info(&vsi->back->pdev->dev,
2703                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2704                          ring->queue_index, pf_q, err);
2705                 return -ENOMEM;
2706         }
2707
2708         /* set the context in the HMC */
2709         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2710         if (err) {
2711                 dev_info(&vsi->back->pdev->dev,
2712                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2713                          ring->queue_index, pf_q, err);
2714                 return -ENOMEM;
2715         }
2716
2717         /* cache tail for quicker writes, and clear the reg before use */
2718         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2719         writel(0, ring->tail);
2720
2721         if (ring_is_ps_enabled(ring)) {
2722                 i40e_alloc_rx_headers(ring);
2723                 i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
2724         } else {
2725                 i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
2726         }
2727
2728         return 0;
2729 }
2730
2731 /**
2732  * i40e_vsi_configure_tx - Configure the VSI for Tx
2733  * @vsi: VSI structure describing this set of rings and resources
2734  *
2735  * Configure the Tx VSI for operation.
2736  **/
2737 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2738 {
2739         int err = 0;
2740         u16 i;
2741
2742         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2743                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2744
2745         return err;
2746 }
2747
2748 /**
2749  * i40e_vsi_configure_rx - Configure the VSI for Rx
2750  * @vsi: the VSI being configured
2751  *
2752  * Configure the Rx VSI for operation.
2753  **/
2754 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2755 {
2756         int err = 0;
2757         u16 i;
2758
2759         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2760                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2761                                + ETH_FCS_LEN + VLAN_HLEN;
2762         else
2763                 vsi->max_frame = I40E_RXBUFFER_2048;
2764
2765         /* figure out correct receive buffer length */
2766         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2767                                     I40E_FLAG_RX_PS_ENABLED)) {
2768         case I40E_FLAG_RX_1BUF_ENABLED:
2769                 vsi->rx_hdr_len = 0;
2770                 vsi->rx_buf_len = vsi->max_frame;
2771                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2772                 break;
2773         case I40E_FLAG_RX_PS_ENABLED:
2774                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2775                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2776                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2777                 break;
2778         default:
2779                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2780                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2781                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2782                 break;
2783         }
2784
2785 #ifdef I40E_FCOE
2786         /* setup rx buffer for FCoE */
2787         if ((vsi->type == I40E_VSI_FCOE) &&
2788             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2789                 vsi->rx_hdr_len = 0;
2790                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2791                 vsi->max_frame = I40E_RXBUFFER_3072;
2792                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2793         }
2794
2795 #endif /* I40E_FCOE */
2796         /* round up for the chip's needs */
2797         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2798                                 BIT_ULL(I40E_RXQ_CTX_HBUFF_SHIFT));
2799         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2800                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
2801
2802         /* set up individual rings */
2803         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2804                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2805
2806         return err;
2807 }
2808
2809 /**
2810  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2811  * @vsi: ptr to the VSI
2812  **/
2813 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2814 {
2815         struct i40e_ring *tx_ring, *rx_ring;
2816         u16 qoffset, qcount;
2817         int i, n;
2818
2819         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
2820                 /* Reset the TC information */
2821                 for (i = 0; i < vsi->num_queue_pairs; i++) {
2822                         rx_ring = vsi->rx_rings[i];
2823                         tx_ring = vsi->tx_rings[i];
2824                         rx_ring->dcb_tc = 0;
2825                         tx_ring->dcb_tc = 0;
2826                 }
2827         }
2828
2829         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2830                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
2831                         continue;
2832
2833                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2834                 qcount = vsi->tc_config.tc_info[n].qcount;
2835                 for (i = qoffset; i < (qoffset + qcount); i++) {
2836                         rx_ring = vsi->rx_rings[i];
2837                         tx_ring = vsi->tx_rings[i];
2838                         rx_ring->dcb_tc = n;
2839                         tx_ring->dcb_tc = n;
2840                 }
2841         }
2842 }
2843
2844 /**
2845  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2846  * @vsi: ptr to the VSI
2847  **/
2848 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2849 {
2850         if (vsi->netdev)
2851                 i40e_set_rx_mode(vsi->netdev);
2852 }
2853
2854 /**
2855  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2856  * @vsi: Pointer to the targeted VSI
2857  *
2858  * This function replays the hlist on the hw where all the SB Flow Director
2859  * filters were saved.
2860  **/
2861 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2862 {
2863         struct i40e_fdir_filter *filter;
2864         struct i40e_pf *pf = vsi->back;
2865         struct hlist_node *node;
2866
2867         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2868                 return;
2869
2870         hlist_for_each_entry_safe(filter, node,
2871                                   &pf->fdir_filter_list, fdir_node) {
2872                 i40e_add_del_fdir(vsi, filter, true);
2873         }
2874 }
2875
2876 /**
2877  * i40e_vsi_configure - Set up the VSI for action
2878  * @vsi: the VSI being configured
2879  **/
2880 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2881 {
2882         int err;
2883
2884         i40e_set_vsi_rx_mode(vsi);
2885         i40e_restore_vlan(vsi);
2886         i40e_vsi_config_dcb_rings(vsi);
2887         err = i40e_vsi_configure_tx(vsi);
2888         if (!err)
2889                 err = i40e_vsi_configure_rx(vsi);
2890
2891         return err;
2892 }
2893
2894 /**
2895  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2896  * @vsi: the VSI being configured
2897  **/
2898 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2899 {
2900         struct i40e_pf *pf = vsi->back;
2901         struct i40e_q_vector *q_vector;
2902         struct i40e_hw *hw = &pf->hw;
2903         u16 vector;
2904         int i, q;
2905         u32 val;
2906         u32 qp;
2907
2908         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2909          * and PFINT_LNKLSTn registers, e.g.:
2910          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2911          */
2912         qp = vsi->base_queue;
2913         vector = vsi->base_vector;
2914         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2915                 q_vector = vsi->q_vectors[i];
2916                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2917                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2918                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2919                      q_vector->rx.itr);
2920                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2921                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2922                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2923                      q_vector->tx.itr);
2924
2925                 /* Linked list for the queuepairs assigned to this vector */
2926                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2927                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2928                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2929                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2930                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2931                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2932                               (I40E_QUEUE_TYPE_TX
2933                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2934
2935                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2936
2937                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2938                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2939                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2940                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2941                               (I40E_QUEUE_TYPE_RX
2942                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2943
2944                         /* Terminate the linked list */
2945                         if (q == (q_vector->num_ringpairs - 1))
2946                                 val |= (I40E_QUEUE_END_OF_LIST
2947                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2948
2949                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2950                         qp++;
2951                 }
2952         }
2953
2954         i40e_flush(hw);
2955 }
2956
2957 /**
2958  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2959  * @hw: ptr to the hardware info
2960  **/
2961 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
2962 {
2963         struct i40e_hw *hw = &pf->hw;
2964         u32 val;
2965
2966         /* clear things first */
2967         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2968         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2969
2970         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2971               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2972               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2973               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2974               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2975               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2976               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2977               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2978
2979         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
2980                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
2981
2982         if (pf->flags & I40E_FLAG_PTP)
2983                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
2984
2985         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2986
2987         /* SW_ITR_IDX = 0, but don't change INTENA */
2988         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2989                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2990
2991         /* OTHER_ITR_IDX = 0 */
2992         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2993 }
2994
2995 /**
2996  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2997  * @vsi: the VSI being configured
2998  **/
2999 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3000 {
3001         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3002         struct i40e_pf *pf = vsi->back;
3003         struct i40e_hw *hw = &pf->hw;
3004         u32 val;
3005
3006         /* set the ITR configuration */
3007         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3008         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3009         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3010         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3011         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3012         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3013
3014         i40e_enable_misc_int_causes(pf);
3015
3016         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3017         wr32(hw, I40E_PFINT_LNKLST0, 0);
3018
3019         /* Associate the queue pair to the vector and enable the queue int */
3020         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3021               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3022               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3023
3024         wr32(hw, I40E_QINT_RQCTL(0), val);
3025
3026         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3027               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3028               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3029
3030         wr32(hw, I40E_QINT_TQCTL(0), val);
3031         i40e_flush(hw);
3032 }
3033
3034 /**
3035  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3036  * @pf: board private structure
3037  **/
3038 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3039 {
3040         struct i40e_hw *hw = &pf->hw;
3041
3042         wr32(hw, I40E_PFINT_DYN_CTL0,
3043              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3044         i40e_flush(hw);
3045 }
3046
3047 /**
3048  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3049  * @pf: board private structure
3050  **/
3051 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
3052 {
3053         struct i40e_hw *hw = &pf->hw;
3054         u32 val;
3055
3056         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3057               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
3058               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3059
3060         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3061         i40e_flush(hw);
3062 }
3063
3064 /**
3065  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
3066  * @vsi: pointer to a vsi
3067  * @vector: enable a particular Hw Interrupt vector
3068  **/
3069 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
3070 {
3071         struct i40e_pf *pf = vsi->back;
3072         struct i40e_hw *hw = &pf->hw;
3073         u32 val;
3074
3075         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
3076               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
3077               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3078         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
3079         /* skip the flush */
3080 }
3081
3082 /**
3083  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
3084  * @vsi: pointer to a vsi
3085  * @vector: disable a particular Hw Interrupt vector
3086  **/
3087 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
3088 {
3089         struct i40e_pf *pf = vsi->back;
3090         struct i40e_hw *hw = &pf->hw;
3091         u32 val;
3092
3093         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
3094         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
3095         i40e_flush(hw);
3096 }
3097
3098 /**
3099  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3100  * @irq: interrupt number
3101  * @data: pointer to a q_vector
3102  **/
3103 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3104 {
3105         struct i40e_q_vector *q_vector = data;
3106
3107         if (!q_vector->tx.ring && !q_vector->rx.ring)
3108                 return IRQ_HANDLED;
3109
3110         napi_schedule(&q_vector->napi);
3111
3112         return IRQ_HANDLED;
3113 }
3114
3115 /**
3116  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3117  * @vsi: the VSI being configured
3118  * @basename: name for the vector
3119  *
3120  * Allocates MSI-X vectors and requests interrupts from the kernel.
3121  **/
3122 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3123 {
3124         int q_vectors = vsi->num_q_vectors;
3125         struct i40e_pf *pf = vsi->back;
3126         int base = vsi->base_vector;
3127         int rx_int_idx = 0;
3128         int tx_int_idx = 0;
3129         int vector, err;
3130
3131         for (vector = 0; vector < q_vectors; vector++) {
3132                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3133
3134                 if (q_vector->tx.ring && q_vector->rx.ring) {
3135                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3136                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3137                         tx_int_idx++;
3138                 } else if (q_vector->rx.ring) {
3139                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3140                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3141                 } else if (q_vector->tx.ring) {
3142                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3143                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3144                 } else {
3145                         /* skip this unused q_vector */
3146                         continue;
3147                 }
3148                 err = request_irq(pf->msix_entries[base + vector].vector,
3149                                   vsi->irq_handler,
3150                                   0,
3151                                   q_vector->name,
3152                                   q_vector);
3153                 if (err) {
3154                         dev_info(&pf->pdev->dev,
3155                                  "%s: request_irq failed, error: %d\n",
3156                                  __func__, err);
3157                         goto free_queue_irqs;
3158                 }
3159                 /* assign the mask for this irq */
3160                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3161                                       &q_vector->affinity_mask);
3162         }
3163
3164         vsi->irqs_ready = true;
3165         return 0;
3166
3167 free_queue_irqs:
3168         while (vector) {
3169                 vector--;
3170                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3171                                       NULL);
3172                 free_irq(pf->msix_entries[base + vector].vector,
3173                          &(vsi->q_vectors[vector]));
3174         }
3175         return err;
3176 }
3177
3178 /**
3179  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3180  * @vsi: the VSI being un-configured
3181  **/
3182 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3183 {
3184         struct i40e_pf *pf = vsi->back;
3185         struct i40e_hw *hw = &pf->hw;
3186         int base = vsi->base_vector;
3187         int i;
3188
3189         for (i = 0; i < vsi->num_queue_pairs; i++) {
3190                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3191                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3192         }
3193
3194         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3195                 for (i = vsi->base_vector;
3196                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3197                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3198
3199                 i40e_flush(hw);
3200                 for (i = 0; i < vsi->num_q_vectors; i++)
3201                         synchronize_irq(pf->msix_entries[i + base].vector);
3202         } else {
3203                 /* Legacy and MSI mode - this stops all interrupt handling */
3204                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3205                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3206                 i40e_flush(hw);
3207                 synchronize_irq(pf->pdev->irq);
3208         }
3209 }
3210
3211 /**
3212  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3213  * @vsi: the VSI being configured
3214  **/
3215 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3216 {
3217         struct i40e_pf *pf = vsi->back;
3218         int i;
3219
3220         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3221                 for (i = vsi->base_vector;
3222                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3223                         i40e_irq_dynamic_enable(vsi, i);
3224         } else {
3225                 i40e_irq_dynamic_enable_icr0(pf);
3226         }
3227
3228         i40e_flush(&pf->hw);
3229         return 0;
3230 }
3231
3232 /**
3233  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3234  * @pf: board private structure
3235  **/
3236 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3237 {
3238         /* Disable ICR 0 */
3239         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3240         i40e_flush(&pf->hw);
3241 }
3242
3243 /**
3244  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3245  * @irq: interrupt number
3246  * @data: pointer to a q_vector
3247  *
3248  * This is the handler used for all MSI/Legacy interrupts, and deals
3249  * with both queue and non-queue interrupts.  This is also used in
3250  * MSIX mode to handle the non-queue interrupts.
3251  **/
3252 static irqreturn_t i40e_intr(int irq, void *data)
3253 {
3254         struct i40e_pf *pf = (struct i40e_pf *)data;
3255         struct i40e_hw *hw = &pf->hw;
3256         irqreturn_t ret = IRQ_NONE;
3257         u32 icr0, icr0_remaining;
3258         u32 val, ena_mask;
3259
3260         icr0 = rd32(hw, I40E_PFINT_ICR0);
3261         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3262
3263         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3264         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3265                 goto enable_intr;
3266
3267         /* if interrupt but no bits showing, must be SWINT */
3268         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3269             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3270                 pf->sw_int_count++;
3271
3272         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3273             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3274                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3275                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3276                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3277         }
3278
3279         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3280         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3281
3282                 /* temporarily disable queue cause for NAPI processing */
3283                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3284                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3285                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3286
3287                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3288                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3289                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3290
3291                 if (!test_bit(__I40E_DOWN, &pf->state))
3292                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
3293         }
3294
3295         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3296                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3297                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3298         }
3299
3300         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3301                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3302                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3303         }
3304
3305         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3306                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3307                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3308         }
3309
3310         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3311                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3312                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3313                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3314                 val = rd32(hw, I40E_GLGEN_RSTAT);
3315                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3316                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3317                 if (val == I40E_RESET_CORER) {
3318                         pf->corer_count++;
3319                 } else if (val == I40E_RESET_GLOBR) {
3320                         pf->globr_count++;
3321                 } else if (val == I40E_RESET_EMPR) {
3322                         pf->empr_count++;
3323                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3324                 }
3325         }
3326
3327         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3328                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3329                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3330                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3331                          rd32(hw, I40E_PFHMC_ERRORINFO),
3332                          rd32(hw, I40E_PFHMC_ERRORDATA));
3333         }
3334
3335         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3336                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3337
3338                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3339                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3340                         i40e_ptp_tx_hwtstamp(pf);
3341                 }
3342         }
3343
3344         /* If a critical error is pending we have no choice but to reset the
3345          * device.
3346          * Report and mask out any remaining unexpected interrupts.
3347          */
3348         icr0_remaining = icr0 & ena_mask;
3349         if (icr0_remaining) {
3350                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3351                          icr0_remaining);
3352                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3353                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3354                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3355                         dev_info(&pf->pdev->dev, "device will be reset\n");
3356                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3357                         i40e_service_event_schedule(pf);
3358                 }
3359                 ena_mask &= ~icr0_remaining;
3360         }
3361         ret = IRQ_HANDLED;
3362
3363 enable_intr:
3364         /* re-enable interrupt causes */
3365         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3366         if (!test_bit(__I40E_DOWN, &pf->state)) {
3367                 i40e_service_event_schedule(pf);
3368                 i40e_irq_dynamic_enable_icr0(pf);
3369         }
3370
3371         return ret;
3372 }
3373
3374 /**
3375  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3376  * @tx_ring:  tx ring to clean
3377  * @budget:   how many cleans we're allowed
3378  *
3379  * Returns true if there's any budget left (e.g. the clean is finished)
3380  **/
3381 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3382 {
3383         struct i40e_vsi *vsi = tx_ring->vsi;
3384         u16 i = tx_ring->next_to_clean;
3385         struct i40e_tx_buffer *tx_buf;
3386         struct i40e_tx_desc *tx_desc;
3387
3388         tx_buf = &tx_ring->tx_bi[i];
3389         tx_desc = I40E_TX_DESC(tx_ring, i);
3390         i -= tx_ring->count;
3391
3392         do {
3393                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3394
3395                 /* if next_to_watch is not set then there is no work pending */
3396                 if (!eop_desc)
3397                         break;
3398
3399                 /* prevent any other reads prior to eop_desc */
3400                 read_barrier_depends();
3401
3402                 /* if the descriptor isn't done, no work yet to do */
3403                 if (!(eop_desc->cmd_type_offset_bsz &
3404                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3405                         break;
3406
3407                 /* clear next_to_watch to prevent false hangs */
3408                 tx_buf->next_to_watch = NULL;
3409
3410                 tx_desc->buffer_addr = 0;
3411                 tx_desc->cmd_type_offset_bsz = 0;
3412                 /* move past filter desc */
3413                 tx_buf++;
3414                 tx_desc++;
3415                 i++;
3416                 if (unlikely(!i)) {
3417                         i -= tx_ring->count;
3418                         tx_buf = tx_ring->tx_bi;
3419                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3420                 }
3421                 /* unmap skb header data */
3422                 dma_unmap_single(tx_ring->dev,
3423                                  dma_unmap_addr(tx_buf, dma),
3424                                  dma_unmap_len(tx_buf, len),
3425                                  DMA_TO_DEVICE);
3426                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3427                         kfree(tx_buf->raw_buf);
3428
3429                 tx_buf->raw_buf = NULL;
3430                 tx_buf->tx_flags = 0;
3431                 tx_buf->next_to_watch = NULL;
3432                 dma_unmap_len_set(tx_buf, len, 0);
3433                 tx_desc->buffer_addr = 0;
3434                 tx_desc->cmd_type_offset_bsz = 0;
3435
3436                 /* move us past the eop_desc for start of next FD desc */
3437                 tx_buf++;
3438                 tx_desc++;
3439                 i++;
3440                 if (unlikely(!i)) {
3441                         i -= tx_ring->count;
3442                         tx_buf = tx_ring->tx_bi;
3443                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3444                 }
3445
3446                 /* update budget accounting */
3447                 budget--;
3448         } while (likely(budget));
3449
3450         i += tx_ring->count;
3451         tx_ring->next_to_clean = i;
3452
3453         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
3454                 i40e_irq_dynamic_enable(vsi,
3455                                 tx_ring->q_vector->v_idx + vsi->base_vector);
3456         }
3457         return budget > 0;
3458 }
3459
3460 /**
3461  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3462  * @irq: interrupt number
3463  * @data: pointer to a q_vector
3464  **/
3465 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3466 {
3467         struct i40e_q_vector *q_vector = data;
3468         struct i40e_vsi *vsi;
3469
3470         if (!q_vector->tx.ring)
3471                 return IRQ_HANDLED;
3472
3473         vsi = q_vector->tx.ring->vsi;
3474         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3475
3476         return IRQ_HANDLED;
3477 }
3478
3479 /**
3480  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3481  * @vsi: the VSI being configured
3482  * @v_idx: vector index
3483  * @qp_idx: queue pair index
3484  **/
3485 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3486 {
3487         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3488         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3489         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3490
3491         tx_ring->q_vector = q_vector;
3492         tx_ring->next = q_vector->tx.ring;
3493         q_vector->tx.ring = tx_ring;
3494         q_vector->tx.count++;
3495
3496         rx_ring->q_vector = q_vector;
3497         rx_ring->next = q_vector->rx.ring;
3498         q_vector->rx.ring = rx_ring;
3499         q_vector->rx.count++;
3500 }
3501
3502 /**
3503  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3504  * @vsi: the VSI being configured
3505  *
3506  * This function maps descriptor rings to the queue-specific vectors
3507  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3508  * one vector per queue pair, but on a constrained vector budget, we
3509  * group the queue pairs as "efficiently" as possible.
3510  **/
3511 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3512 {
3513         int qp_remaining = vsi->num_queue_pairs;
3514         int q_vectors = vsi->num_q_vectors;
3515         int num_ringpairs;
3516         int v_start = 0;
3517         int qp_idx = 0;
3518
3519         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3520          * group them so there are multiple queues per vector.
3521          * It is also important to go through all the vectors available to be
3522          * sure that if we don't use all the vectors, that the remaining vectors
3523          * are cleared. This is especially important when decreasing the
3524          * number of queues in use.
3525          */
3526         for (; v_start < q_vectors; v_start++) {
3527                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3528
3529                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3530
3531                 q_vector->num_ringpairs = num_ringpairs;
3532
3533                 q_vector->rx.count = 0;
3534                 q_vector->tx.count = 0;
3535                 q_vector->rx.ring = NULL;
3536                 q_vector->tx.ring = NULL;
3537
3538                 while (num_ringpairs--) {
3539                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3540                         qp_idx++;
3541                         qp_remaining--;
3542                 }
3543         }
3544 }
3545
3546 /**
3547  * i40e_vsi_request_irq - Request IRQ from the OS
3548  * @vsi: the VSI being configured
3549  * @basename: name for the vector
3550  **/
3551 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3552 {
3553         struct i40e_pf *pf = vsi->back;
3554         int err;
3555
3556         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3557                 err = i40e_vsi_request_irq_msix(vsi, basename);
3558         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3559                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3560                                   pf->int_name, pf);
3561         else
3562                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3563                                   pf->int_name, pf);
3564
3565         if (err)
3566                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3567
3568         return err;
3569 }
3570
3571 #ifdef CONFIG_NET_POLL_CONTROLLER
3572 /**
3573  * i40e_netpoll - A Polling 'interrupt'handler
3574  * @netdev: network interface device structure
3575  *
3576  * This is used by netconsole to send skbs without having to re-enable
3577  * interrupts.  It's not called while the normal interrupt routine is executing.
3578  **/
3579 #ifdef I40E_FCOE
3580 void i40e_netpoll(struct net_device *netdev)
3581 #else
3582 static void i40e_netpoll(struct net_device *netdev)
3583 #endif
3584 {
3585         struct i40e_netdev_priv *np = netdev_priv(netdev);
3586         struct i40e_vsi *vsi = np->vsi;
3587         struct i40e_pf *pf = vsi->back;
3588         int i;
3589
3590         /* if interface is down do nothing */
3591         if (test_bit(__I40E_DOWN, &vsi->state))
3592                 return;
3593
3594         pf->flags |= I40E_FLAG_IN_NETPOLL;
3595         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3596                 for (i = 0; i < vsi->num_q_vectors; i++)
3597                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3598         } else {
3599                 i40e_intr(pf->pdev->irq, netdev);
3600         }
3601         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3602 }
3603 #endif
3604
3605 /**
3606  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3607  * @pf: the PF being configured
3608  * @pf_q: the PF queue
3609  * @enable: enable or disable state of the queue
3610  *
3611  * This routine will wait for the given Tx queue of the PF to reach the
3612  * enabled or disabled state.
3613  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3614  * multiple retries; else will return 0 in case of success.
3615  **/
3616 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3617 {
3618         int i;
3619         u32 tx_reg;
3620
3621         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3622                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3623                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3624                         break;
3625
3626                 usleep_range(10, 20);
3627         }
3628         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3629                 return -ETIMEDOUT;
3630
3631         return 0;
3632 }
3633
3634 /**
3635  * i40e_vsi_control_tx - Start or stop a VSI's rings
3636  * @vsi: the VSI being configured
3637  * @enable: start or stop the rings
3638  **/
3639 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3640 {
3641         struct i40e_pf *pf = vsi->back;
3642         struct i40e_hw *hw = &pf->hw;
3643         int i, j, pf_q, ret = 0;
3644         u32 tx_reg;
3645
3646         pf_q = vsi->base_queue;
3647         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3648
3649                 /* warn the TX unit of coming changes */
3650                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3651                 if (!enable)
3652                         usleep_range(10, 20);
3653
3654                 for (j = 0; j < 50; j++) {
3655                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3656                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3657                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3658                                 break;
3659                         usleep_range(1000, 2000);
3660                 }
3661                 /* Skip if the queue is already in the requested state */
3662                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3663                         continue;
3664
3665                 /* turn on/off the queue */
3666                 if (enable) {
3667                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3668                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3669                 } else {
3670                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3671                 }
3672
3673                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3674                 /* No waiting for the Tx queue to disable */
3675                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3676                         continue;
3677
3678                 /* wait for the change to finish */
3679                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3680                 if (ret) {
3681                         dev_info(&pf->pdev->dev,
3682                                  "%s: VSI seid %d Tx ring %d %sable timeout\n",
3683                                  __func__, vsi->seid, pf_q,
3684                                  (enable ? "en" : "dis"));
3685                         break;
3686                 }
3687         }
3688
3689         if (hw->revision_id == 0)
3690                 mdelay(50);
3691         return ret;
3692 }
3693
3694 /**
3695  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3696  * @pf: the PF being configured
3697  * @pf_q: the PF queue
3698  * @enable: enable or disable state of the queue
3699  *
3700  * This routine will wait for the given Rx queue of the PF to reach the
3701  * enabled or disabled state.
3702  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3703  * multiple retries; else will return 0 in case of success.
3704  **/
3705 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3706 {
3707         int i;
3708         u32 rx_reg;
3709
3710         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3711                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3712                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3713                         break;
3714
3715                 usleep_range(10, 20);
3716         }
3717         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3718                 return -ETIMEDOUT;
3719
3720         return 0;
3721 }
3722
3723 /**
3724  * i40e_vsi_control_rx - Start or stop a VSI's rings
3725  * @vsi: the VSI being configured
3726  * @enable: start or stop the rings
3727  **/
3728 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3729 {
3730         struct i40e_pf *pf = vsi->back;
3731         struct i40e_hw *hw = &pf->hw;
3732         int i, j, pf_q, ret = 0;
3733         u32 rx_reg;
3734
3735         pf_q = vsi->base_queue;
3736         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3737                 for (j = 0; j < 50; j++) {
3738                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3739                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3740                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3741                                 break;
3742                         usleep_range(1000, 2000);
3743                 }
3744
3745                 /* Skip if the queue is already in the requested state */
3746                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3747                         continue;
3748
3749                 /* turn on/off the queue */
3750                 if (enable)
3751                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3752                 else
3753                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3754                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3755
3756                 /* wait for the change to finish */
3757                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3758                 if (ret) {
3759                         dev_info(&pf->pdev->dev,
3760                                  "%s: VSI seid %d Rx ring %d %sable timeout\n",
3761                                  __func__, vsi->seid, pf_q,
3762                                  (enable ? "en" : "dis"));
3763                         break;
3764                 }
3765         }
3766
3767         return ret;
3768 }
3769
3770 /**
3771  * i40e_vsi_control_rings - Start or stop a VSI's rings
3772  * @vsi: the VSI being configured
3773  * @enable: start or stop the rings
3774  **/
3775 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3776 {
3777         int ret = 0;
3778
3779         /* do rx first for enable and last for disable */
3780         if (request) {
3781                 ret = i40e_vsi_control_rx(vsi, request);
3782                 if (ret)
3783                         return ret;
3784                 ret = i40e_vsi_control_tx(vsi, request);
3785         } else {
3786                 /* Ignore return value, we need to shutdown whatever we can */
3787                 i40e_vsi_control_tx(vsi, request);
3788                 i40e_vsi_control_rx(vsi, request);
3789         }
3790
3791         return ret;
3792 }
3793
3794 /**
3795  * i40e_vsi_free_irq - Free the irq association with the OS
3796  * @vsi: the VSI being configured
3797  **/
3798 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3799 {
3800         struct i40e_pf *pf = vsi->back;
3801         struct i40e_hw *hw = &pf->hw;
3802         int base = vsi->base_vector;
3803         u32 val, qp;
3804         int i;
3805
3806         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3807                 if (!vsi->q_vectors)
3808                         return;
3809
3810                 if (!vsi->irqs_ready)
3811                         return;
3812
3813                 vsi->irqs_ready = false;
3814                 for (i = 0; i < vsi->num_q_vectors; i++) {
3815                         u16 vector = i + base;
3816
3817                         /* free only the irqs that were actually requested */
3818                         if (!vsi->q_vectors[i] ||
3819                             !vsi->q_vectors[i]->num_ringpairs)
3820                                 continue;
3821
3822                         /* clear the affinity_mask in the IRQ descriptor */
3823                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3824                                               NULL);
3825                         free_irq(pf->msix_entries[vector].vector,
3826                                  vsi->q_vectors[i]);
3827
3828                         /* Tear down the interrupt queue link list
3829                          *
3830                          * We know that they come in pairs and always
3831                          * the Rx first, then the Tx.  To clear the
3832                          * link list, stick the EOL value into the
3833                          * next_q field of the registers.
3834                          */
3835                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3836                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3837                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3838                         val |= I40E_QUEUE_END_OF_LIST
3839                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3840                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3841
3842                         while (qp != I40E_QUEUE_END_OF_LIST) {
3843                                 u32 next;
3844
3845                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3846
3847                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3848                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3849                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3850                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3851
3852                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3853                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3854
3855                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3856
3857                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3858
3859                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3860                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3861
3862                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3863                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3864                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3865                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3866
3867                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3868                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3869
3870                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3871                                 qp = next;
3872                         }
3873                 }
3874         } else {
3875                 free_irq(pf->pdev->irq, pf);
3876
3877                 val = rd32(hw, I40E_PFINT_LNKLST0);
3878                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3879                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3880                 val |= I40E_QUEUE_END_OF_LIST
3881                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3882                 wr32(hw, I40E_PFINT_LNKLST0, val);
3883
3884                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3885                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3886                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3887                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3888                          I40E_QINT_RQCTL_INTEVENT_MASK);
3889
3890                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3891                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3892
3893                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3894
3895                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3896
3897                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3898                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3899                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3900                          I40E_QINT_TQCTL_INTEVENT_MASK);
3901
3902                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3903                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3904
3905                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3906         }
3907 }
3908
3909 /**
3910  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3911  * @vsi: the VSI being configured
3912  * @v_idx: Index of vector to be freed
3913  *
3914  * This function frees the memory allocated to the q_vector.  In addition if
3915  * NAPI is enabled it will delete any references to the NAPI struct prior
3916  * to freeing the q_vector.
3917  **/
3918 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3919 {
3920         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3921         struct i40e_ring *ring;
3922
3923         if (!q_vector)
3924                 return;
3925
3926         /* disassociate q_vector from rings */
3927         i40e_for_each_ring(ring, q_vector->tx)
3928                 ring->q_vector = NULL;
3929
3930         i40e_for_each_ring(ring, q_vector->rx)
3931                 ring->q_vector = NULL;
3932
3933         /* only VSI w/ an associated netdev is set up w/ NAPI */
3934         if (vsi->netdev)
3935                 netif_napi_del(&q_vector->napi);
3936
3937         vsi->q_vectors[v_idx] = NULL;
3938
3939         kfree_rcu(q_vector, rcu);
3940 }
3941
3942 /**
3943  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3944  * @vsi: the VSI being un-configured
3945  *
3946  * This frees the memory allocated to the q_vectors and
3947  * deletes references to the NAPI struct.
3948  **/
3949 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3950 {
3951         int v_idx;
3952
3953         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3954                 i40e_free_q_vector(vsi, v_idx);
3955 }
3956
3957 /**
3958  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3959  * @pf: board private structure
3960  **/
3961 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3962 {
3963         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3964         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3965                 pci_disable_msix(pf->pdev);
3966                 kfree(pf->msix_entries);
3967                 pf->msix_entries = NULL;
3968                 kfree(pf->irq_pile);
3969                 pf->irq_pile = NULL;
3970         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3971                 pci_disable_msi(pf->pdev);
3972         }
3973         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3974 }
3975
3976 /**
3977  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3978  * @pf: board private structure
3979  *
3980  * We go through and clear interrupt specific resources and reset the structure
3981  * to pre-load conditions
3982  **/
3983 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3984 {
3985         int i;
3986
3987         i40e_stop_misc_vector(pf);
3988         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3989                 synchronize_irq(pf->msix_entries[0].vector);
3990                 free_irq(pf->msix_entries[0].vector, pf);
3991         }
3992
3993         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3994         for (i = 0; i < pf->num_alloc_vsi; i++)
3995                 if (pf->vsi[i])
3996                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3997         i40e_reset_interrupt_capability(pf);
3998 }
3999
4000 /**
4001  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4002  * @vsi: the VSI being configured
4003  **/
4004 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4005 {
4006         int q_idx;
4007
4008         if (!vsi->netdev)
4009                 return;
4010
4011         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4012                 napi_enable(&vsi->q_vectors[q_idx]->napi);
4013 }
4014
4015 /**
4016  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4017  * @vsi: the VSI being configured
4018  **/
4019 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4020 {
4021         int q_idx;
4022
4023         if (!vsi->netdev)
4024                 return;
4025
4026         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4027                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4028 }
4029
4030 /**
4031  * i40e_vsi_close - Shut down a VSI
4032  * @vsi: the vsi to be quelled
4033  **/
4034 static void i40e_vsi_close(struct i40e_vsi *vsi)
4035 {
4036         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4037                 i40e_down(vsi);
4038         i40e_vsi_free_irq(vsi);
4039         i40e_vsi_free_tx_resources(vsi);
4040         i40e_vsi_free_rx_resources(vsi);
4041         vsi->current_netdev_flags = 0;
4042 }
4043
4044 /**
4045  * i40e_quiesce_vsi - Pause a given VSI
4046  * @vsi: the VSI being paused
4047  **/
4048 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4049 {
4050         if (test_bit(__I40E_DOWN, &vsi->state))
4051                 return;
4052
4053         /* No need to disable FCoE VSI when Tx suspended */
4054         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4055             vsi->type == I40E_VSI_FCOE) {
4056                 dev_dbg(&vsi->back->pdev->dev,
4057                         "%s: VSI seid %d skipping FCoE VSI disable\n",
4058                          __func__, vsi->seid);
4059                 return;
4060         }
4061
4062         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4063         if (vsi->netdev && netif_running(vsi->netdev)) {
4064                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4065         } else {
4066                 i40e_vsi_close(vsi);
4067         }
4068 }
4069
4070 /**
4071  * i40e_unquiesce_vsi - Resume a given VSI
4072  * @vsi: the VSI being resumed
4073  **/
4074 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4075 {
4076         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4077                 return;
4078
4079         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4080         if (vsi->netdev && netif_running(vsi->netdev))
4081                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4082         else
4083                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4084 }
4085
4086 /**
4087  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4088  * @pf: the PF
4089  **/
4090 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4091 {
4092         int v;
4093
4094         for (v = 0; v < pf->num_alloc_vsi; v++) {
4095                 if (pf->vsi[v])
4096                         i40e_quiesce_vsi(pf->vsi[v]);
4097         }
4098 }
4099
4100 /**
4101  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4102  * @pf: the PF
4103  **/
4104 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4105 {
4106         int v;
4107
4108         for (v = 0; v < pf->num_alloc_vsi; v++) {
4109                 if (pf->vsi[v])
4110                         i40e_unquiesce_vsi(pf->vsi[v]);
4111         }
4112 }
4113
4114 #ifdef CONFIG_I40E_DCB
4115 /**
4116  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
4117  * @vsi: the VSI being configured
4118  *
4119  * This function waits for the given VSI's Tx queues to be disabled.
4120  **/
4121 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
4122 {
4123         struct i40e_pf *pf = vsi->back;
4124         int i, pf_q, ret;
4125
4126         pf_q = vsi->base_queue;
4127         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4128                 /* Check and wait for the disable status of the queue */
4129                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4130                 if (ret) {
4131                         dev_info(&pf->pdev->dev,
4132                                  "%s: VSI seid %d Tx ring %d disable timeout\n",
4133                                  __func__, vsi->seid, pf_q);
4134                         return ret;
4135                 }
4136         }
4137
4138         return 0;
4139 }
4140
4141 /**
4142  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
4143  * @pf: the PF
4144  *
4145  * This function waits for the Tx queues to be in disabled state for all the
4146  * VSIs that are managed by this PF.
4147  **/
4148 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
4149 {
4150         int v, ret = 0;
4151
4152         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4153                 /* No need to wait for FCoE VSI queues */
4154                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4155                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
4156                         if (ret)
4157                                 break;
4158                 }
4159         }
4160
4161         return ret;
4162 }
4163
4164 #endif
4165
4166 /**
4167  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4168  * @q_idx: TX queue number
4169  * @vsi: Pointer to VSI struct
4170  *
4171  * This function checks specified queue for given VSI. Detects hung condition.
4172  * Sets hung bit since it is two step process. Before next run of service task
4173  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4174  * hung condition remain unchanged and during subsequent run, this function
4175  * issues SW interrupt to recover from hung condition.
4176  **/
4177 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4178 {
4179         struct i40e_ring *tx_ring = NULL;
4180         struct i40e_pf  *pf;
4181         u32 head, val, tx_pending;
4182         int i;
4183
4184         pf = vsi->back;
4185
4186         /* now that we have an index, find the tx_ring struct */
4187         for (i = 0; i < vsi->num_queue_pairs; i++) {
4188                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4189                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4190                                 tx_ring = vsi->tx_rings[i];
4191                                 break;
4192                         }
4193                 }
4194         }
4195
4196         if (!tx_ring)
4197                 return;
4198
4199         /* Read interrupt register */
4200         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4201                 val = rd32(&pf->hw,
4202                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4203                                                tx_ring->vsi->base_vector - 1));
4204         else
4205                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4206
4207         head = i40e_get_head(tx_ring);
4208
4209         tx_pending = i40e_get_tx_pending(tx_ring);
4210
4211         /* Interrupts are disabled and TX pending is non-zero,
4212          * trigger the SW interrupt (don't wait). Worst case
4213          * there will be one extra interrupt which may result
4214          * into not cleaning any queues because queues are cleaned.
4215          */
4216         if (tx_pending && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK)))
4217                 i40e_force_wb(vsi, tx_ring->q_vector);
4218 }
4219
4220 /**
4221  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4222  * @pf:  pointer to PF struct
4223  *
4224  * LAN VSI has netdev and netdev has TX queues. This function is to check
4225  * each of those TX queues if they are hung, trigger recovery by issuing
4226  * SW interrupt.
4227  **/
4228 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4229 {
4230         struct net_device *netdev;
4231         struct i40e_vsi *vsi;
4232         int i;
4233
4234         /* Only for LAN VSI */
4235         vsi = pf->vsi[pf->lan_vsi];
4236
4237         if (!vsi)
4238                 return;
4239
4240         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4241         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4242             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4243                 return;
4244
4245         /* Make sure type is MAIN VSI */
4246         if (vsi->type != I40E_VSI_MAIN)
4247                 return;
4248
4249         netdev = vsi->netdev;
4250         if (!netdev)
4251                 return;
4252
4253         /* Bail out if netif_carrier is not OK */
4254         if (!netif_carrier_ok(netdev))
4255                 return;
4256
4257         /* Go thru' TX queues for netdev */
4258         for (i = 0; i < netdev->num_tx_queues; i++) {
4259                 struct netdev_queue *q;
4260
4261                 q = netdev_get_tx_queue(netdev, i);
4262                 if (q)
4263                         i40e_detect_recover_hung_queue(i, vsi);
4264         }
4265 }
4266
4267 /**
4268  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4269  * @pf: pointer to PF
4270  *
4271  * Get TC map for ISCSI PF type that will include iSCSI TC
4272  * and LAN TC.
4273  **/
4274 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4275 {
4276         struct i40e_dcb_app_priority_table app;
4277         struct i40e_hw *hw = &pf->hw;
4278         u8 enabled_tc = 1; /* TC0 is always enabled */
4279         u8 tc, i;
4280         /* Get the iSCSI APP TLV */
4281         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4282
4283         for (i = 0; i < dcbcfg->numapps; i++) {
4284                 app = dcbcfg->app[i];
4285                 if (app.selector == I40E_APP_SEL_TCPIP &&
4286                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4287                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4288                         enabled_tc |= BIT_ULL(tc);
4289                         break;
4290                 }
4291         }
4292
4293         return enabled_tc;
4294 }
4295
4296 /**
4297  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4298  * @dcbcfg: the corresponding DCBx configuration structure
4299  *
4300  * Return the number of TCs from given DCBx configuration
4301  **/
4302 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4303 {
4304         u8 num_tc = 0;
4305         int i;
4306
4307         /* Scan the ETS Config Priority Table to find
4308          * traffic class enabled for a given priority
4309          * and use the traffic class index to get the
4310          * number of traffic classes enabled
4311          */
4312         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4313                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4314                         num_tc = dcbcfg->etscfg.prioritytable[i];
4315         }
4316
4317         /* Traffic class index starts from zero so
4318          * increment to return the actual count
4319          */
4320         return num_tc + 1;
4321 }
4322
4323 /**
4324  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4325  * @dcbcfg: the corresponding DCBx configuration structure
4326  *
4327  * Query the current DCB configuration and return the number of
4328  * traffic classes enabled from the given DCBX config
4329  **/
4330 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4331 {
4332         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4333         u8 enabled_tc = 1;
4334         u8 i;
4335
4336         for (i = 0; i < num_tc; i++)
4337                 enabled_tc |= BIT(i);
4338
4339         return enabled_tc;
4340 }
4341
4342 /**
4343  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4344  * @pf: PF being queried
4345  *
4346  * Return number of traffic classes enabled for the given PF
4347  **/
4348 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4349 {
4350         struct i40e_hw *hw = &pf->hw;
4351         u8 i, enabled_tc;
4352         u8 num_tc = 0;
4353         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4354
4355         /* If DCB is not enabled then always in single TC */
4356         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4357                 return 1;
4358
4359         /* SFP mode will be enabled for all TCs on port */
4360         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4361                 return i40e_dcb_get_num_tc(dcbcfg);
4362
4363         /* MFP mode return count of enabled TCs for this PF */
4364         if (pf->hw.func_caps.iscsi)
4365                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4366         else
4367                 return 1; /* Only TC0 */
4368
4369         /* At least have TC0 */
4370         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4371         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4372                 if (enabled_tc & BIT_ULL(i))
4373                         num_tc++;
4374         }
4375         return num_tc;
4376 }
4377
4378 /**
4379  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4380  * @pf: PF being queried
4381  *
4382  * Return a bitmap for first enabled traffic class for this PF.
4383  **/
4384 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4385 {
4386         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4387         u8 i = 0;
4388
4389         if (!enabled_tc)
4390                 return 0x1; /* TC0 */
4391
4392         /* Find the first enabled TC */
4393         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4394                 if (enabled_tc & BIT_ULL(i))
4395                         break;
4396         }
4397
4398         return BIT(i);
4399 }
4400
4401 /**
4402  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4403  * @pf: PF being queried
4404  *
4405  * Return a bitmap for enabled traffic classes for this PF.
4406  **/
4407 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4408 {
4409         /* If DCB is not enabled for this PF then just return default TC */
4410         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4411                 return i40e_pf_get_default_tc(pf);
4412
4413         /* SFP mode we want PF to be enabled for all TCs */
4414         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4415                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4416
4417         /* MFP enabled and iSCSI PF type */
4418         if (pf->hw.func_caps.iscsi)
4419                 return i40e_get_iscsi_tc_map(pf);
4420         else
4421                 return i40e_pf_get_default_tc(pf);
4422 }
4423
4424 /**
4425  * i40e_vsi_get_bw_info - Query VSI BW Information
4426  * @vsi: the VSI being queried
4427  *
4428  * Returns 0 on success, negative value on failure
4429  **/
4430 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4431 {
4432         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4433         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4434         struct i40e_pf *pf = vsi->back;
4435         struct i40e_hw *hw = &pf->hw;
4436         i40e_status ret;
4437         u32 tc_bw_max;
4438         int i;
4439
4440         /* Get the VSI level BW configuration */
4441         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4442         if (ret) {
4443                 dev_info(&pf->pdev->dev,
4444                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4445                          i40e_stat_str(&pf->hw, ret),
4446                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4447                 return -EINVAL;
4448         }
4449
4450         /* Get the VSI level BW configuration per TC */
4451         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4452                                                NULL);
4453         if (ret) {
4454                 dev_info(&pf->pdev->dev,
4455                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4456                          i40e_stat_str(&pf->hw, ret),
4457                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4458                 return -EINVAL;
4459         }
4460
4461         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4462                 dev_info(&pf->pdev->dev,
4463                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4464                          bw_config.tc_valid_bits,
4465                          bw_ets_config.tc_valid_bits);
4466                 /* Still continuing */
4467         }
4468
4469         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4470         vsi->bw_max_quanta = bw_config.max_bw;
4471         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4472                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4473         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4474                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4475                 vsi->bw_ets_limit_credits[i] =
4476                                         le16_to_cpu(bw_ets_config.credits[i]);
4477                 /* 3 bits out of 4 for each TC */
4478                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4479         }
4480
4481         return 0;
4482 }
4483
4484 /**
4485  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4486  * @vsi: the VSI being configured
4487  * @enabled_tc: TC bitmap
4488  * @bw_credits: BW shared credits per TC
4489  *
4490  * Returns 0 on success, negative value on failure
4491  **/
4492 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4493                                        u8 *bw_share)
4494 {
4495         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4496         i40e_status ret;
4497         int i;
4498
4499         bw_data.tc_valid_bits = enabled_tc;
4500         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4501                 bw_data.tc_bw_credits[i] = bw_share[i];
4502
4503         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4504                                        NULL);
4505         if (ret) {
4506                 dev_info(&vsi->back->pdev->dev,
4507                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4508                          vsi->back->hw.aq.asq_last_status);
4509                 return -EINVAL;
4510         }
4511
4512         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4513                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4514
4515         return 0;
4516 }
4517
4518 /**
4519  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4520  * @vsi: the VSI being configured
4521  * @enabled_tc: TC map to be enabled
4522  *
4523  **/
4524 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4525 {
4526         struct net_device *netdev = vsi->netdev;
4527         struct i40e_pf *pf = vsi->back;
4528         struct i40e_hw *hw = &pf->hw;
4529         u8 netdev_tc = 0;
4530         int i;
4531         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4532
4533         if (!netdev)
4534                 return;
4535
4536         if (!enabled_tc) {
4537                 netdev_reset_tc(netdev);
4538                 return;
4539         }
4540
4541         /* Set up actual enabled TCs on the VSI */
4542         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4543                 return;
4544
4545         /* set per TC queues for the VSI */
4546         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4547                 /* Only set TC queues for enabled tcs
4548                  *
4549                  * e.g. For a VSI that has TC0 and TC3 enabled the
4550                  * enabled_tc bitmap would be 0x00001001; the driver
4551                  * will set the numtc for netdev as 2 that will be
4552                  * referenced by the netdev layer as TC 0 and 1.
4553                  */
4554                 if (vsi->tc_config.enabled_tc & BIT_ULL(i))
4555                         netdev_set_tc_queue(netdev,
4556                                         vsi->tc_config.tc_info[i].netdev_tc,
4557                                         vsi->tc_config.tc_info[i].qcount,
4558                                         vsi->tc_config.tc_info[i].qoffset);
4559         }
4560
4561         /* Assign UP2TC map for the VSI */
4562         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4563                 /* Get the actual TC# for the UP */
4564                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4565                 /* Get the mapped netdev TC# for the UP */
4566                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4567                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4568         }
4569 }
4570
4571 /**
4572  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4573  * @vsi: the VSI being configured
4574  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4575  **/
4576 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4577                                       struct i40e_vsi_context *ctxt)
4578 {
4579         /* copy just the sections touched not the entire info
4580          * since not all sections are valid as returned by
4581          * update vsi params
4582          */
4583         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4584         memcpy(&vsi->info.queue_mapping,
4585                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4586         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4587                sizeof(vsi->info.tc_mapping));
4588 }
4589
4590 /**
4591  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4592  * @vsi: VSI to be configured
4593  * @enabled_tc: TC bitmap
4594  *
4595  * This configures a particular VSI for TCs that are mapped to the
4596  * given TC bitmap. It uses default bandwidth share for TCs across
4597  * VSIs to configure TC for a particular VSI.
4598  *
4599  * NOTE:
4600  * It is expected that the VSI queues have been quisced before calling
4601  * this function.
4602  **/
4603 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4604 {
4605         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4606         struct i40e_vsi_context ctxt;
4607         int ret = 0;
4608         int i;
4609
4610         /* Check if enabled_tc is same as existing or new TCs */
4611         if (vsi->tc_config.enabled_tc == enabled_tc)
4612                 return ret;
4613
4614         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4615         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4616                 if (enabled_tc & BIT_ULL(i))
4617                         bw_share[i] = 1;
4618         }
4619
4620         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4621         if (ret) {
4622                 dev_info(&vsi->back->pdev->dev,
4623                          "Failed configuring TC map %d for VSI %d\n",
4624                          enabled_tc, vsi->seid);
4625                 goto out;
4626         }
4627
4628         /* Update Queue Pairs Mapping for currently enabled UPs */
4629         ctxt.seid = vsi->seid;
4630         ctxt.pf_num = vsi->back->hw.pf_id;
4631         ctxt.vf_num = 0;
4632         ctxt.uplink_seid = vsi->uplink_seid;
4633         ctxt.info = vsi->info;
4634         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4635
4636         /* Update the VSI after updating the VSI queue-mapping information */
4637         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4638         if (ret) {
4639                 dev_info(&vsi->back->pdev->dev,
4640                          "Update vsi tc config failed, err %s aq_err %s\n",
4641                          i40e_stat_str(&vsi->back->hw, ret),
4642                          i40e_aq_str(&vsi->back->hw,
4643                                      vsi->back->hw.aq.asq_last_status));
4644                 goto out;
4645         }
4646         /* update the local VSI info with updated queue map */
4647         i40e_vsi_update_queue_map(vsi, &ctxt);
4648         vsi->info.valid_sections = 0;
4649
4650         /* Update current VSI BW information */
4651         ret = i40e_vsi_get_bw_info(vsi);
4652         if (ret) {
4653                 dev_info(&vsi->back->pdev->dev,
4654                          "Failed updating vsi bw info, err %s aq_err %s\n",
4655                          i40e_stat_str(&vsi->back->hw, ret),
4656                          i40e_aq_str(&vsi->back->hw,
4657                                      vsi->back->hw.aq.asq_last_status));
4658                 goto out;
4659         }
4660
4661         /* Update the netdev TC setup */
4662         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4663 out:
4664         return ret;
4665 }
4666
4667 /**
4668  * i40e_veb_config_tc - Configure TCs for given VEB
4669  * @veb: given VEB
4670  * @enabled_tc: TC bitmap
4671  *
4672  * Configures given TC bitmap for VEB (switching) element
4673  **/
4674 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4675 {
4676         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4677         struct i40e_pf *pf = veb->pf;
4678         int ret = 0;
4679         int i;
4680
4681         /* No TCs or already enabled TCs just return */
4682         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4683                 return ret;
4684
4685         bw_data.tc_valid_bits = enabled_tc;
4686         /* bw_data.absolute_credits is not set (relative) */
4687
4688         /* Enable ETS TCs with equal BW Share for now */
4689         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4690                 if (enabled_tc & BIT_ULL(i))
4691                         bw_data.tc_bw_share_credits[i] = 1;
4692         }
4693
4694         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4695                                                    &bw_data, NULL);
4696         if (ret) {
4697                 dev_info(&pf->pdev->dev,
4698                          "VEB bw config failed, err %s aq_err %s\n",
4699                          i40e_stat_str(&pf->hw, ret),
4700                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4701                 goto out;
4702         }
4703
4704         /* Update the BW information */
4705         ret = i40e_veb_get_bw_info(veb);
4706         if (ret) {
4707                 dev_info(&pf->pdev->dev,
4708                          "Failed getting veb bw config, err %s aq_err %s\n",
4709                          i40e_stat_str(&pf->hw, ret),
4710                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4711         }
4712
4713 out:
4714         return ret;
4715 }
4716
4717 #ifdef CONFIG_I40E_DCB
4718 /**
4719  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4720  * @pf: PF struct
4721  *
4722  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4723  * the caller would've quiesce all the VSIs before calling
4724  * this function
4725  **/
4726 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4727 {
4728         u8 tc_map = 0;
4729         int ret;
4730         u8 v;
4731
4732         /* Enable the TCs available on PF to all VEBs */
4733         tc_map = i40e_pf_get_tc_map(pf);
4734         for (v = 0; v < I40E_MAX_VEB; v++) {
4735                 if (!pf->veb[v])
4736                         continue;
4737                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4738                 if (ret) {
4739                         dev_info(&pf->pdev->dev,
4740                                  "Failed configuring TC for VEB seid=%d\n",
4741                                  pf->veb[v]->seid);
4742                         /* Will try to configure as many components */
4743                 }
4744         }
4745
4746         /* Update each VSI */
4747         for (v = 0; v < pf->num_alloc_vsi; v++) {
4748                 if (!pf->vsi[v])
4749                         continue;
4750
4751                 /* - Enable all TCs for the LAN VSI
4752 #ifdef I40E_FCOE
4753                  * - For FCoE VSI only enable the TC configured
4754                  *   as per the APP TLV
4755 #endif
4756                  * - For all others keep them at TC0 for now
4757                  */
4758                 if (v == pf->lan_vsi)
4759                         tc_map = i40e_pf_get_tc_map(pf);
4760                 else
4761                         tc_map = i40e_pf_get_default_tc(pf);
4762 #ifdef I40E_FCOE
4763                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4764                         tc_map = i40e_get_fcoe_tc_map(pf);
4765 #endif /* #ifdef I40E_FCOE */
4766
4767                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4768                 if (ret) {
4769                         dev_info(&pf->pdev->dev,
4770                                  "Failed configuring TC for VSI seid=%d\n",
4771                                  pf->vsi[v]->seid);
4772                         /* Will try to configure as many components */
4773                 } else {
4774                         /* Re-configure VSI vectors based on updated TC map */
4775                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4776                         if (pf->vsi[v]->netdev)
4777                                 i40e_dcbnl_set_all(pf->vsi[v]);
4778                 }
4779         }
4780 }
4781
4782 /**
4783  * i40e_resume_port_tx - Resume port Tx
4784  * @pf: PF struct
4785  *
4786  * Resume a port's Tx and issue a PF reset in case of failure to
4787  * resume.
4788  **/
4789 static int i40e_resume_port_tx(struct i40e_pf *pf)
4790 {
4791         struct i40e_hw *hw = &pf->hw;
4792         int ret;
4793
4794         ret = i40e_aq_resume_port_tx(hw, NULL);
4795         if (ret) {
4796                 dev_info(&pf->pdev->dev,
4797                          "Resume Port Tx failed, err %s aq_err %s\n",
4798                           i40e_stat_str(&pf->hw, ret),
4799                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4800                 /* Schedule PF reset to recover */
4801                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4802                 i40e_service_event_schedule(pf);
4803         }
4804
4805         return ret;
4806 }
4807
4808 /**
4809  * i40e_init_pf_dcb - Initialize DCB configuration
4810  * @pf: PF being configured
4811  *
4812  * Query the current DCB configuration and cache it
4813  * in the hardware structure
4814  **/
4815 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4816 {
4817         struct i40e_hw *hw = &pf->hw;
4818         int err = 0;
4819
4820         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
4821         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
4822             (pf->hw.aq.fw_maj_ver < 4))
4823                 goto out;
4824
4825         /* Get the initial DCB configuration */
4826         err = i40e_init_dcb(hw);
4827         if (!err) {
4828                 /* Device/Function is not DCBX capable */
4829                 if ((!hw->func_caps.dcb) ||
4830                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4831                         dev_info(&pf->pdev->dev,
4832                                  "DCBX offload is not supported or is disabled for this PF.\n");
4833
4834                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4835                                 goto out;
4836
4837                 } else {
4838                         /* When status is not DISABLED then DCBX in FW */
4839                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4840                                        DCB_CAP_DCBX_VER_IEEE;
4841
4842                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
4843                         /* Enable DCB tagging only when more than one TC */
4844                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
4845                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4846                         dev_dbg(&pf->pdev->dev,
4847                                 "DCBX offload is supported for this PF.\n");
4848                 }
4849         } else {
4850                 dev_info(&pf->pdev->dev,
4851                          "Query for DCB configuration failed, err %s aq_err %s\n",
4852                          i40e_stat_str(&pf->hw, err),
4853                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4854         }
4855
4856 out:
4857         return err;
4858 }
4859 #endif /* CONFIG_I40E_DCB */
4860 #define SPEED_SIZE 14
4861 #define FC_SIZE 8
4862 /**
4863  * i40e_print_link_message - print link up or down
4864  * @vsi: the VSI for which link needs a message
4865  */
4866 static void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
4867 {
4868         char speed[SPEED_SIZE] = "Unknown";
4869         char fc[FC_SIZE] = "RX/TX";
4870
4871         if (!isup) {
4872                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4873                 return;
4874         }
4875
4876         /* Warn user if link speed on NPAR enabled partition is not at
4877          * least 10GB
4878          */
4879         if (vsi->back->hw.func_caps.npar_enable &&
4880             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
4881              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
4882                 netdev_warn(vsi->netdev,
4883                             "The partition detected link speed that is less than 10Gbps\n");
4884
4885         switch (vsi->back->hw.phy.link_info.link_speed) {
4886         case I40E_LINK_SPEED_40GB:
4887                 strlcpy(speed, "40 Gbps", SPEED_SIZE);
4888                 break;
4889         case I40E_LINK_SPEED_20GB:
4890                 strncpy(speed, "20 Gbps", SPEED_SIZE);
4891                 break;
4892         case I40E_LINK_SPEED_10GB:
4893                 strlcpy(speed, "10 Gbps", SPEED_SIZE);
4894                 break;
4895         case I40E_LINK_SPEED_1GB:
4896                 strlcpy(speed, "1000 Mbps", SPEED_SIZE);
4897                 break;
4898         case I40E_LINK_SPEED_100MB:
4899                 strncpy(speed, "100 Mbps", SPEED_SIZE);
4900                 break;
4901         default:
4902                 break;
4903         }
4904
4905         switch (vsi->back->hw.fc.current_mode) {
4906         case I40E_FC_FULL:
4907                 strlcpy(fc, "RX/TX", FC_SIZE);
4908                 break;
4909         case I40E_FC_TX_PAUSE:
4910                 strlcpy(fc, "TX", FC_SIZE);
4911                 break;
4912         case I40E_FC_RX_PAUSE:
4913                 strlcpy(fc, "RX", FC_SIZE);
4914                 break;
4915         default:
4916                 strlcpy(fc, "None", FC_SIZE);
4917                 break;
4918         }
4919
4920         netdev_info(vsi->netdev, "NIC Link is Up %s Full Duplex, Flow Control: %s\n",
4921                     speed, fc);
4922 }
4923
4924 /**
4925  * i40e_up_complete - Finish the last steps of bringing up a connection
4926  * @vsi: the VSI being configured
4927  **/
4928 static int i40e_up_complete(struct i40e_vsi *vsi)
4929 {
4930         struct i40e_pf *pf = vsi->back;
4931         int err;
4932
4933         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4934                 i40e_vsi_configure_msix(vsi);
4935         else
4936                 i40e_configure_msi_and_legacy(vsi);
4937
4938         /* start rings */
4939         err = i40e_vsi_control_rings(vsi, true);
4940         if (err)
4941                 return err;
4942
4943         clear_bit(__I40E_DOWN, &vsi->state);
4944         i40e_napi_enable_all(vsi);
4945         i40e_vsi_enable_irq(vsi);
4946
4947         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4948             (vsi->netdev)) {
4949                 i40e_print_link_message(vsi, true);
4950                 netif_tx_start_all_queues(vsi->netdev);
4951                 netif_carrier_on(vsi->netdev);
4952         } else if (vsi->netdev) {
4953                 i40e_print_link_message(vsi, false);
4954                 /* need to check for qualified module here*/
4955                 if ((pf->hw.phy.link_info.link_info &
4956                         I40E_AQ_MEDIA_AVAILABLE) &&
4957                     (!(pf->hw.phy.link_info.an_info &
4958                         I40E_AQ_QUALIFIED_MODULE)))
4959                         netdev_err(vsi->netdev,
4960                                    "the driver failed to link because an unqualified module was detected.");
4961         }
4962
4963         /* replay FDIR SB filters */
4964         if (vsi->type == I40E_VSI_FDIR) {
4965                 /* reset fd counters */
4966                 pf->fd_add_err = pf->fd_atr_cnt = 0;
4967                 if (pf->fd_tcp_rule > 0) {
4968                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4969                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
4970                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
4971                         pf->fd_tcp_rule = 0;
4972                 }
4973                 i40e_fdir_filter_restore(vsi);
4974         }
4975         i40e_service_event_schedule(pf);
4976
4977         return 0;
4978 }
4979
4980 /**
4981  * i40e_vsi_reinit_locked - Reset the VSI
4982  * @vsi: the VSI being configured
4983  *
4984  * Rebuild the ring structs after some configuration
4985  * has changed, e.g. MTU size.
4986  **/
4987 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4988 {
4989         struct i40e_pf *pf = vsi->back;
4990
4991         WARN_ON(in_interrupt());
4992         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4993                 usleep_range(1000, 2000);
4994         i40e_down(vsi);
4995
4996         /* Give a VF some time to respond to the reset.  The
4997          * two second wait is based upon the watchdog cycle in
4998          * the VF driver.
4999          */
5000         if (vsi->type == I40E_VSI_SRIOV)
5001                 msleep(2000);
5002         i40e_up(vsi);
5003         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
5004 }
5005
5006 /**
5007  * i40e_up - Bring the connection back up after being down
5008  * @vsi: the VSI being configured
5009  **/
5010 int i40e_up(struct i40e_vsi *vsi)
5011 {
5012         int err;
5013
5014         err = i40e_vsi_configure(vsi);
5015         if (!err)
5016                 err = i40e_up_complete(vsi);
5017
5018         return err;
5019 }
5020
5021 /**
5022  * i40e_down - Shutdown the connection processing
5023  * @vsi: the VSI being stopped
5024  **/
5025 void i40e_down(struct i40e_vsi *vsi)
5026 {
5027         int i;
5028
5029         /* It is assumed that the caller of this function
5030          * sets the vsi->state __I40E_DOWN bit.
5031          */
5032         if (vsi->netdev) {
5033                 netif_carrier_off(vsi->netdev);
5034                 netif_tx_disable(vsi->netdev);
5035         }
5036         i40e_vsi_disable_irq(vsi);
5037         i40e_vsi_control_rings(vsi, false);
5038         i40e_napi_disable_all(vsi);
5039
5040         for (i = 0; i < vsi->num_queue_pairs; i++) {
5041                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5042                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5043         }
5044 }
5045
5046 /**
5047  * i40e_setup_tc - configure multiple traffic classes
5048  * @netdev: net device to configure
5049  * @tc: number of traffic classes to enable
5050  **/
5051 #ifdef I40E_FCOE
5052 int i40e_setup_tc(struct net_device *netdev, u8 tc)
5053 #else
5054 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5055 #endif
5056 {
5057         struct i40e_netdev_priv *np = netdev_priv(netdev);
5058         struct i40e_vsi *vsi = np->vsi;
5059         struct i40e_pf *pf = vsi->back;
5060         u8 enabled_tc = 0;
5061         int ret = -EINVAL;
5062         int i;
5063
5064         /* Check if DCB enabled to continue */
5065         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5066                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5067                 goto exit;
5068         }
5069
5070         /* Check if MFP enabled */
5071         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5072                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5073                 goto exit;
5074         }
5075
5076         /* Check whether tc count is within enabled limit */
5077         if (tc > i40e_pf_get_num_tc(pf)) {
5078                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5079                 goto exit;
5080         }
5081
5082         /* Generate TC map for number of tc requested */
5083         for (i = 0; i < tc; i++)
5084                 enabled_tc |= BIT_ULL(i);
5085
5086         /* Requesting same TC configuration as already enabled */
5087         if (enabled_tc == vsi->tc_config.enabled_tc)
5088                 return 0;
5089
5090         /* Quiesce VSI queues */
5091         i40e_quiesce_vsi(vsi);
5092
5093         /* Configure VSI for enabled TCs */
5094         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5095         if (ret) {
5096                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5097                             vsi->seid);
5098                 goto exit;
5099         }
5100
5101         /* Unquiesce VSI */
5102         i40e_unquiesce_vsi(vsi);
5103
5104 exit:
5105         return ret;
5106 }
5107
5108 /**
5109  * i40e_open - Called when a network interface is made active
5110  * @netdev: network interface device structure
5111  *
5112  * The open entry point is called when a network interface is made
5113  * active by the system (IFF_UP).  At this point all resources needed
5114  * for transmit and receive operations are allocated, the interrupt
5115  * handler is registered with the OS, the netdev watchdog subtask is
5116  * enabled, and the stack is notified that the interface is ready.
5117  *
5118  * Returns 0 on success, negative value on failure
5119  **/
5120 int i40e_open(struct net_device *netdev)
5121 {
5122         struct i40e_netdev_priv *np = netdev_priv(netdev);
5123         struct i40e_vsi *vsi = np->vsi;
5124         struct i40e_pf *pf = vsi->back;
5125         int err;
5126
5127         /* disallow open during test or if eeprom is broken */
5128         if (test_bit(__I40E_TESTING, &pf->state) ||
5129             test_bit(__I40E_BAD_EEPROM, &pf->state))
5130                 return -EBUSY;
5131
5132         netif_carrier_off(netdev);
5133
5134         err = i40e_vsi_open(vsi);
5135         if (err)
5136                 return err;
5137
5138         /* configure global TSO hardware offload settings */
5139         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5140                                                        TCP_FLAG_FIN) >> 16);
5141         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5142                                                        TCP_FLAG_FIN |
5143                                                        TCP_FLAG_CWR) >> 16);
5144         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5145
5146 #ifdef CONFIG_I40E_VXLAN
5147         vxlan_get_rx_port(netdev);
5148 #endif
5149
5150         return 0;
5151 }
5152
5153 /**
5154  * i40e_vsi_open -
5155  * @vsi: the VSI to open
5156  *
5157  * Finish initialization of the VSI.
5158  *
5159  * Returns 0 on success, negative value on failure
5160  **/
5161 int i40e_vsi_open(struct i40e_vsi *vsi)
5162 {
5163         struct i40e_pf *pf = vsi->back;
5164         char int_name[I40E_INT_NAME_STR_LEN];
5165         int err;
5166
5167         /* allocate descriptors */
5168         err = i40e_vsi_setup_tx_resources(vsi);
5169         if (err)
5170                 goto err_setup_tx;
5171         err = i40e_vsi_setup_rx_resources(vsi);
5172         if (err)
5173                 goto err_setup_rx;
5174
5175         err = i40e_vsi_configure(vsi);
5176         if (err)
5177                 goto err_setup_rx;
5178
5179         if (vsi->netdev) {
5180                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5181                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5182                 err = i40e_vsi_request_irq(vsi, int_name);
5183                 if (err)
5184                         goto err_setup_rx;
5185
5186                 /* Notify the stack of the actual queue counts. */
5187                 err = netif_set_real_num_tx_queues(vsi->netdev,
5188                                                    vsi->num_queue_pairs);
5189                 if (err)
5190                         goto err_set_queues;
5191
5192                 err = netif_set_real_num_rx_queues(vsi->netdev,
5193                                                    vsi->num_queue_pairs);
5194                 if (err)
5195                         goto err_set_queues;
5196
5197         } else if (vsi->type == I40E_VSI_FDIR) {
5198                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5199                          dev_driver_string(&pf->pdev->dev),
5200                          dev_name(&pf->pdev->dev));
5201                 err = i40e_vsi_request_irq(vsi, int_name);
5202
5203         } else {
5204                 err = -EINVAL;
5205                 goto err_setup_rx;
5206         }
5207
5208         err = i40e_up_complete(vsi);
5209         if (err)
5210                 goto err_up_complete;
5211
5212         return 0;
5213
5214 err_up_complete:
5215         i40e_down(vsi);
5216 err_set_queues:
5217         i40e_vsi_free_irq(vsi);
5218 err_setup_rx:
5219         i40e_vsi_free_rx_resources(vsi);
5220 err_setup_tx:
5221         i40e_vsi_free_tx_resources(vsi);
5222         if (vsi == pf->vsi[pf->lan_vsi])
5223                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5224
5225         return err;
5226 }
5227
5228 /**
5229  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5230  * @pf: Pointer to PF
5231  *
5232  * This function destroys the hlist where all the Flow Director
5233  * filters were saved.
5234  **/
5235 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5236 {
5237         struct i40e_fdir_filter *filter;
5238         struct hlist_node *node2;
5239
5240         hlist_for_each_entry_safe(filter, node2,
5241                                   &pf->fdir_filter_list, fdir_node) {
5242                 hlist_del(&filter->fdir_node);
5243                 kfree(filter);
5244         }
5245         pf->fdir_pf_active_filters = 0;
5246 }
5247
5248 /**
5249  * i40e_close - Disables a network interface
5250  * @netdev: network interface device structure
5251  *
5252  * The close entry point is called when an interface is de-activated
5253  * by the OS.  The hardware is still under the driver's control, but
5254  * this netdev interface is disabled.
5255  *
5256  * Returns 0, this is not allowed to fail
5257  **/
5258 #ifdef I40E_FCOE
5259 int i40e_close(struct net_device *netdev)
5260 #else
5261 static int i40e_close(struct net_device *netdev)
5262 #endif
5263 {
5264         struct i40e_netdev_priv *np = netdev_priv(netdev);
5265         struct i40e_vsi *vsi = np->vsi;
5266
5267         i40e_vsi_close(vsi);
5268
5269         return 0;
5270 }
5271
5272 /**
5273  * i40e_do_reset - Start a PF or Core Reset sequence
5274  * @pf: board private structure
5275  * @reset_flags: which reset is requested
5276  *
5277  * The essential difference in resets is that the PF Reset
5278  * doesn't clear the packet buffers, doesn't reset the PE
5279  * firmware, and doesn't bother the other PFs on the chip.
5280  **/
5281 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5282 {
5283         u32 val;
5284
5285         WARN_ON(in_interrupt());
5286
5287         if (i40e_check_asq_alive(&pf->hw))
5288                 i40e_vc_notify_reset(pf);
5289
5290         /* do the biggest reset indicated */
5291         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5292
5293                 /* Request a Global Reset
5294                  *
5295                  * This will start the chip's countdown to the actual full
5296                  * chip reset event, and a warning interrupt to be sent
5297                  * to all PFs, including the requestor.  Our handler
5298                  * for the warning interrupt will deal with the shutdown
5299                  * and recovery of the switch setup.
5300                  */
5301                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5302                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5303                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5304                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5305
5306         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5307
5308                 /* Request a Core Reset
5309                  *
5310                  * Same as Global Reset, except does *not* include the MAC/PHY
5311                  */
5312                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5313                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5314                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5315                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5316                 i40e_flush(&pf->hw);
5317
5318         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5319
5320                 /* Request a PF Reset
5321                  *
5322                  * Resets only the PF-specific registers
5323                  *
5324                  * This goes directly to the tear-down and rebuild of
5325                  * the switch, since we need to do all the recovery as
5326                  * for the Core Reset.
5327                  */
5328                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5329                 i40e_handle_reset_warning(pf);
5330
5331         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5332                 int v;
5333
5334                 /* Find the VSI(s) that requested a re-init */
5335                 dev_info(&pf->pdev->dev,
5336                          "VSI reinit requested\n");
5337                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5338                         struct i40e_vsi *vsi = pf->vsi[v];
5339                         if (vsi != NULL &&
5340                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5341                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5342                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5343                         }
5344                 }
5345
5346                 /* no further action needed, so return now */
5347                 return;
5348         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5349                 int v;
5350
5351                 /* Find the VSI(s) that needs to be brought down */
5352                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5353                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5354                         struct i40e_vsi *vsi = pf->vsi[v];
5355                         if (vsi != NULL &&
5356                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5357                                 set_bit(__I40E_DOWN, &vsi->state);
5358                                 i40e_down(vsi);
5359                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5360                         }
5361                 }
5362
5363                 /* no further action needed, so return now */
5364                 return;
5365         } else {
5366                 dev_info(&pf->pdev->dev,
5367                          "bad reset request 0x%08x\n", reset_flags);
5368                 return;
5369         }
5370 }
5371
5372 #ifdef CONFIG_I40E_DCB
5373 /**
5374  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5375  * @pf: board private structure
5376  * @old_cfg: current DCB config
5377  * @new_cfg: new DCB config
5378  **/
5379 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5380                             struct i40e_dcbx_config *old_cfg,
5381                             struct i40e_dcbx_config *new_cfg)
5382 {
5383         bool need_reconfig = false;
5384
5385         /* Check if ETS configuration has changed */
5386         if (memcmp(&new_cfg->etscfg,
5387                    &old_cfg->etscfg,
5388                    sizeof(new_cfg->etscfg))) {
5389                 /* If Priority Table has changed reconfig is needed */
5390                 if (memcmp(&new_cfg->etscfg.prioritytable,
5391                            &old_cfg->etscfg.prioritytable,
5392                            sizeof(new_cfg->etscfg.prioritytable))) {
5393                         need_reconfig = true;
5394                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5395                 }
5396
5397                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5398                            &old_cfg->etscfg.tcbwtable,
5399                            sizeof(new_cfg->etscfg.tcbwtable)))
5400                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5401
5402                 if (memcmp(&new_cfg->etscfg.tsatable,
5403                            &old_cfg->etscfg.tsatable,
5404                            sizeof(new_cfg->etscfg.tsatable)))
5405                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5406         }
5407
5408         /* Check if PFC configuration has changed */
5409         if (memcmp(&new_cfg->pfc,
5410                    &old_cfg->pfc,
5411                    sizeof(new_cfg->pfc))) {
5412                 need_reconfig = true;
5413                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5414         }
5415
5416         /* Check if APP Table has changed */
5417         if (memcmp(&new_cfg->app,
5418                    &old_cfg->app,
5419                    sizeof(new_cfg->app))) {
5420                 need_reconfig = true;
5421                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5422         }
5423
5424         dev_dbg(&pf->pdev->dev, "%s: need_reconfig=%d\n", __func__,
5425                 need_reconfig);
5426         return need_reconfig;
5427 }
5428
5429 /**
5430  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5431  * @pf: board private structure
5432  * @e: event info posted on ARQ
5433  **/
5434 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5435                                   struct i40e_arq_event_info *e)
5436 {
5437         struct i40e_aqc_lldp_get_mib *mib =
5438                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5439         struct i40e_hw *hw = &pf->hw;
5440         struct i40e_dcbx_config tmp_dcbx_cfg;
5441         bool need_reconfig = false;
5442         int ret = 0;
5443         u8 type;
5444
5445         /* Not DCB capable or capability disabled */
5446         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5447                 return ret;
5448
5449         /* Ignore if event is not for Nearest Bridge */
5450         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5451                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5452         dev_dbg(&pf->pdev->dev,
5453                 "%s: LLDP event mib bridge type 0x%x\n", __func__, type);
5454         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5455                 return ret;
5456
5457         /* Check MIB Type and return if event for Remote MIB update */
5458         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5459         dev_dbg(&pf->pdev->dev,
5460                 "%s: LLDP event mib type %s\n", __func__,
5461                 type ? "remote" : "local");
5462         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5463                 /* Update the remote cached instance and return */
5464                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5465                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5466                                 &hw->remote_dcbx_config);
5467                 goto exit;
5468         }
5469
5470         /* Store the old configuration */
5471         tmp_dcbx_cfg = hw->local_dcbx_config;
5472
5473         /* Reset the old DCBx configuration data */
5474         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5475         /* Get updated DCBX data from firmware */
5476         ret = i40e_get_dcb_config(&pf->hw);
5477         if (ret) {
5478                 dev_info(&pf->pdev->dev,
5479                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5480                          i40e_stat_str(&pf->hw, ret),
5481                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5482                 goto exit;
5483         }
5484
5485         /* No change detected in DCBX configs */
5486         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5487                     sizeof(tmp_dcbx_cfg))) {
5488                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5489                 goto exit;
5490         }
5491
5492         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5493                                                &hw->local_dcbx_config);
5494
5495         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5496
5497         if (!need_reconfig)
5498                 goto exit;
5499
5500         /* Enable DCB tagging only when more than one TC */
5501         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5502                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5503         else
5504                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5505
5506         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5507         /* Reconfiguration needed quiesce all VSIs */
5508         i40e_pf_quiesce_all_vsi(pf);
5509
5510         /* Changes in configuration update VEB/VSI */
5511         i40e_dcb_reconfigure(pf);
5512
5513         ret = i40e_resume_port_tx(pf);
5514
5515         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5516         /* In case of error no point in resuming VSIs */
5517         if (ret)
5518                 goto exit;
5519
5520         /* Wait for the PF's Tx queues to be disabled */
5521         ret = i40e_pf_wait_txq_disabled(pf);
5522         if (ret) {
5523                 /* Schedule PF reset to recover */
5524                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5525                 i40e_service_event_schedule(pf);
5526         } else {
5527                 i40e_pf_unquiesce_all_vsi(pf);
5528         }
5529
5530 exit:
5531         return ret;
5532 }
5533 #endif /* CONFIG_I40E_DCB */
5534
5535 /**
5536  * i40e_do_reset_safe - Protected reset path for userland calls.
5537  * @pf: board private structure
5538  * @reset_flags: which reset is requested
5539  *
5540  **/
5541 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5542 {
5543         rtnl_lock();
5544         i40e_do_reset(pf, reset_flags);
5545         rtnl_unlock();
5546 }
5547
5548 /**
5549  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5550  * @pf: board private structure
5551  * @e: event info posted on ARQ
5552  *
5553  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5554  * and VF queues
5555  **/
5556 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5557                                            struct i40e_arq_event_info *e)
5558 {
5559         struct i40e_aqc_lan_overflow *data =
5560                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5561         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5562         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5563         struct i40e_hw *hw = &pf->hw;
5564         struct i40e_vf *vf;
5565         u16 vf_id;
5566
5567         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5568                 queue, qtx_ctl);
5569
5570         /* Queue belongs to VF, find the VF and issue VF reset */
5571         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5572             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5573                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5574                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5575                 vf_id -= hw->func_caps.vf_base_id;
5576                 vf = &pf->vf[vf_id];
5577                 i40e_vc_notify_vf_reset(vf);
5578                 /* Allow VF to process pending reset notification */
5579                 msleep(20);
5580                 i40e_reset_vf(vf, false);
5581         }
5582 }
5583
5584 /**
5585  * i40e_service_event_complete - Finish up the service event
5586  * @pf: board private structure
5587  **/
5588 static void i40e_service_event_complete(struct i40e_pf *pf)
5589 {
5590         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5591
5592         /* flush memory to make sure state is correct before next watchog */
5593         smp_mb__before_atomic();
5594         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5595 }
5596
5597 /**
5598  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5599  * @pf: board private structure
5600  **/
5601 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5602 {
5603         u32 val, fcnt_prog;
5604
5605         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5606         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5607         return fcnt_prog;
5608 }
5609
5610 /**
5611  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5612  * @pf: board private structure
5613  **/
5614 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5615 {
5616         u32 val, fcnt_prog;
5617
5618         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5619         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5620                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5621                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5622         return fcnt_prog;
5623 }
5624
5625 /**
5626  * i40e_get_global_fd_count - Get total FD filters programmed on device
5627  * @pf: board private structure
5628  **/
5629 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5630 {
5631         u32 val, fcnt_prog;
5632
5633         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5634         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5635                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5636                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5637         return fcnt_prog;
5638 }
5639
5640 /**
5641  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5642  * @pf: board private structure
5643  **/
5644 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5645 {
5646         u32 fcnt_prog, fcnt_avail;
5647
5648         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5649                 return;
5650
5651         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5652          * to re-enable
5653          */
5654         fcnt_prog = i40e_get_global_fd_count(pf);
5655         fcnt_avail = pf->fdir_pf_filter_count;
5656         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5657             (pf->fd_add_err == 0) ||
5658             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5659                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5660                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5661                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5662                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5663                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5664                 }
5665         }
5666         /* Wait for some more space to be available to turn on ATR */
5667         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5668                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5669                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5670                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5671                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5672                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5673                 }
5674         }
5675 }
5676
5677 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5678 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5679 /**
5680  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5681  * @pf: board private structure
5682  **/
5683 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5684 {
5685         unsigned long min_flush_time;
5686         int flush_wait_retry = 50;
5687         bool disable_atr = false;
5688         int fd_room;
5689         int reg;
5690
5691         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5692                 return;
5693
5694         if (time_after(jiffies, pf->fd_flush_timestamp +
5695                                 (I40E_MIN_FD_FLUSH_INTERVAL * HZ))) {
5696                 /* If the flush is happening too quick and we have mostly
5697                  * SB rules we should not re-enable ATR for some time.
5698                  */
5699                 min_flush_time = pf->fd_flush_timestamp
5700                                 + (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5701                 fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5702
5703                 if (!(time_after(jiffies, min_flush_time)) &&
5704                     (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5705                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5706                                 dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5707                         disable_atr = true;
5708                 }
5709
5710                 pf->fd_flush_timestamp = jiffies;
5711                 pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5712                 /* flush all filters */
5713                 wr32(&pf->hw, I40E_PFQF_CTL_1,
5714                      I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5715                 i40e_flush(&pf->hw);
5716                 pf->fd_flush_cnt++;
5717                 pf->fd_add_err = 0;
5718                 do {
5719                         /* Check FD flush status every 5-6msec */
5720                         usleep_range(5000, 6000);
5721                         reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5722                         if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5723                                 break;
5724                 } while (flush_wait_retry--);
5725                 if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5726                         dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5727                 } else {
5728                         /* replay sideband filters */
5729                         i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5730                         if (!disable_atr)
5731                                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5732                         clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5733                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5734                                 dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5735                 }
5736         }
5737 }
5738
5739 /**
5740  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5741  * @pf: board private structure
5742  **/
5743 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5744 {
5745         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5746 }
5747
5748 /* We can see up to 256 filter programming desc in transit if the filters are
5749  * being applied really fast; before we see the first
5750  * filter miss error on Rx queue 0. Accumulating enough error messages before
5751  * reacting will make sure we don't cause flush too often.
5752  */
5753 #define I40E_MAX_FD_PROGRAM_ERROR 256
5754
5755 /**
5756  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5757  * @pf: board private structure
5758  **/
5759 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5760 {
5761
5762         /* if interface is down do nothing */
5763         if (test_bit(__I40E_DOWN, &pf->state))
5764                 return;
5765
5766         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5767                 return;
5768
5769         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5770                 i40e_fdir_flush_and_replay(pf);
5771
5772         i40e_fdir_check_and_reenable(pf);
5773
5774 }
5775
5776 /**
5777  * i40e_vsi_link_event - notify VSI of a link event
5778  * @vsi: vsi to be notified
5779  * @link_up: link up or down
5780  **/
5781 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5782 {
5783         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5784                 return;
5785
5786         switch (vsi->type) {
5787         case I40E_VSI_MAIN:
5788 #ifdef I40E_FCOE
5789         case I40E_VSI_FCOE:
5790 #endif
5791                 if (!vsi->netdev || !vsi->netdev_registered)
5792                         break;
5793
5794                 if (link_up) {
5795                         netif_carrier_on(vsi->netdev);
5796                         netif_tx_wake_all_queues(vsi->netdev);
5797                 } else {
5798                         netif_carrier_off(vsi->netdev);
5799                         netif_tx_stop_all_queues(vsi->netdev);
5800                 }
5801                 break;
5802
5803         case I40E_VSI_SRIOV:
5804         case I40E_VSI_VMDQ2:
5805         case I40E_VSI_CTRL:
5806         case I40E_VSI_MIRROR:
5807         default:
5808                 /* there is no notification for other VSIs */
5809                 break;
5810         }
5811 }
5812
5813 /**
5814  * i40e_veb_link_event - notify elements on the veb of a link event
5815  * @veb: veb to be notified
5816  * @link_up: link up or down
5817  **/
5818 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5819 {
5820         struct i40e_pf *pf;
5821         int i;
5822
5823         if (!veb || !veb->pf)
5824                 return;
5825         pf = veb->pf;
5826
5827         /* depth first... */
5828         for (i = 0; i < I40E_MAX_VEB; i++)
5829                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5830                         i40e_veb_link_event(pf->veb[i], link_up);
5831
5832         /* ... now the local VSIs */
5833         for (i = 0; i < pf->num_alloc_vsi; i++)
5834                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5835                         i40e_vsi_link_event(pf->vsi[i], link_up);
5836 }
5837
5838 /**
5839  * i40e_link_event - Update netif_carrier status
5840  * @pf: board private structure
5841  **/
5842 static void i40e_link_event(struct i40e_pf *pf)
5843 {
5844         bool new_link, old_link;
5845         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5846         u8 new_link_speed, old_link_speed;
5847
5848         /* set this to force the get_link_status call to refresh state */
5849         pf->hw.phy.get_link_info = true;
5850
5851         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5852         new_link = i40e_get_link_status(&pf->hw);
5853         old_link_speed = pf->hw.phy.link_info_old.link_speed;
5854         new_link_speed = pf->hw.phy.link_info.link_speed;
5855
5856         if (new_link == old_link &&
5857             new_link_speed == old_link_speed &&
5858             (test_bit(__I40E_DOWN, &vsi->state) ||
5859              new_link == netif_carrier_ok(vsi->netdev)))
5860                 return;
5861
5862         if (!test_bit(__I40E_DOWN, &vsi->state))
5863                 i40e_print_link_message(vsi, new_link);
5864
5865         /* Notify the base of the switch tree connected to
5866          * the link.  Floating VEBs are not notified.
5867          */
5868         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5869                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5870         else
5871                 i40e_vsi_link_event(vsi, new_link);
5872
5873         if (pf->vf)
5874                 i40e_vc_notify_link_state(pf);
5875
5876         if (pf->flags & I40E_FLAG_PTP)
5877                 i40e_ptp_set_increment(pf);
5878 }
5879
5880 /**
5881  * i40e_watchdog_subtask - periodic checks not using event driven response
5882  * @pf: board private structure
5883  **/
5884 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5885 {
5886         int i;
5887
5888         /* if interface is down do nothing */
5889         if (test_bit(__I40E_DOWN, &pf->state) ||
5890             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5891                 return;
5892
5893         /* make sure we don't do these things too often */
5894         if (time_before(jiffies, (pf->service_timer_previous +
5895                                   pf->service_timer_period)))
5896                 return;
5897         pf->service_timer_previous = jiffies;
5898
5899         i40e_link_event(pf);
5900
5901         /* Update the stats for active netdevs so the network stack
5902          * can look at updated numbers whenever it cares to
5903          */
5904         for (i = 0; i < pf->num_alloc_vsi; i++)
5905                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5906                         i40e_update_stats(pf->vsi[i]);
5907
5908         /* Update the stats for the active switching components */
5909         for (i = 0; i < I40E_MAX_VEB; i++)
5910                 if (pf->veb[i])
5911                         i40e_update_veb_stats(pf->veb[i]);
5912
5913         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5914 }
5915
5916 /**
5917  * i40e_reset_subtask - Set up for resetting the device and driver
5918  * @pf: board private structure
5919  **/
5920 static void i40e_reset_subtask(struct i40e_pf *pf)
5921 {
5922         u32 reset_flags = 0;
5923
5924         rtnl_lock();
5925         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5926                 reset_flags |= BIT_ULL(__I40E_REINIT_REQUESTED);
5927                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5928         }
5929         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5930                 reset_flags |= BIT_ULL(__I40E_PF_RESET_REQUESTED);
5931                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5932         }
5933         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5934                 reset_flags |= BIT_ULL(__I40E_CORE_RESET_REQUESTED);
5935                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5936         }
5937         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5938                 reset_flags |= BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED);
5939                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5940         }
5941         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5942                 reset_flags |= BIT_ULL(__I40E_DOWN_REQUESTED);
5943                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5944         }
5945
5946         /* If there's a recovery already waiting, it takes
5947          * precedence before starting a new reset sequence.
5948          */
5949         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5950                 i40e_handle_reset_warning(pf);
5951                 goto unlock;
5952         }
5953
5954         /* If we're already down or resetting, just bail */
5955         if (reset_flags &&
5956             !test_bit(__I40E_DOWN, &pf->state) &&
5957             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5958                 i40e_do_reset(pf, reset_flags);
5959
5960 unlock:
5961         rtnl_unlock();
5962 }
5963
5964 /**
5965  * i40e_handle_link_event - Handle link event
5966  * @pf: board private structure
5967  * @e: event info posted on ARQ
5968  **/
5969 static void i40e_handle_link_event(struct i40e_pf *pf,
5970                                    struct i40e_arq_event_info *e)
5971 {
5972         struct i40e_hw *hw = &pf->hw;
5973         struct i40e_aqc_get_link_status *status =
5974                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5975
5976         /* save off old link status information */
5977         hw->phy.link_info_old = hw->phy.link_info;
5978
5979         /* Do a new status request to re-enable LSE reporting
5980          * and load new status information into the hw struct
5981          * This completely ignores any state information
5982          * in the ARQ event info, instead choosing to always
5983          * issue the AQ update link status command.
5984          */
5985         i40e_link_event(pf);
5986
5987         /* check for unqualified module, if link is down */
5988         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
5989             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
5990             (!(status->link_info & I40E_AQ_LINK_UP)))
5991                 dev_err(&pf->pdev->dev,
5992                         "The driver failed to link because an unqualified module was detected.\n");
5993 }
5994
5995 /**
5996  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5997  * @pf: board private structure
5998  **/
5999 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6000 {
6001         struct i40e_arq_event_info event;
6002         struct i40e_hw *hw = &pf->hw;
6003         u16 pending, i = 0;
6004         i40e_status ret;
6005         u16 opcode;
6006         u32 oldval;
6007         u32 val;
6008
6009         /* Do not run clean AQ when PF reset fails */
6010         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6011                 return;
6012
6013         /* check for error indications */
6014         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6015         oldval = val;
6016         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6017                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6018                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6019         }
6020         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6021                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6022                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6023         }
6024         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6025                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6026                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6027         }
6028         if (oldval != val)
6029                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6030
6031         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6032         oldval = val;
6033         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6034                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6035                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6036         }
6037         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6038                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6039                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6040         }
6041         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6042                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6043                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6044         }
6045         if (oldval != val)
6046                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6047
6048         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6049         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6050         if (!event.msg_buf)
6051                 return;
6052
6053         do {
6054                 ret = i40e_clean_arq_element(hw, &event, &pending);
6055                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6056                         break;
6057                 else if (ret) {
6058                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6059                         break;
6060                 }
6061
6062                 opcode = le16_to_cpu(event.desc.opcode);
6063                 switch (opcode) {
6064
6065                 case i40e_aqc_opc_get_link_status:
6066                         i40e_handle_link_event(pf, &event);
6067                         break;
6068                 case i40e_aqc_opc_send_msg_to_pf:
6069                         ret = i40e_vc_process_vf_msg(pf,
6070                                         le16_to_cpu(event.desc.retval),
6071                                         le32_to_cpu(event.desc.cookie_high),
6072                                         le32_to_cpu(event.desc.cookie_low),
6073                                         event.msg_buf,
6074                                         event.msg_len);
6075                         break;
6076                 case i40e_aqc_opc_lldp_update_mib:
6077                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6078 #ifdef CONFIG_I40E_DCB
6079                         rtnl_lock();
6080                         ret = i40e_handle_lldp_event(pf, &event);
6081                         rtnl_unlock();
6082 #endif /* CONFIG_I40E_DCB */
6083                         break;
6084                 case i40e_aqc_opc_event_lan_overflow:
6085                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6086                         i40e_handle_lan_overflow_event(pf, &event);
6087                         break;
6088                 case i40e_aqc_opc_send_msg_to_peer:
6089                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6090                         break;
6091                 case i40e_aqc_opc_nvm_erase:
6092                 case i40e_aqc_opc_nvm_update:
6093                         i40e_debug(&pf->hw, I40E_DEBUG_NVM, "ARQ NVM operation completed\n");
6094                         break;
6095                 default:
6096                         dev_info(&pf->pdev->dev,
6097                                  "ARQ Error: Unknown event 0x%04x received\n",
6098                                  opcode);
6099                         break;
6100                 }
6101         } while (pending && (i++ < pf->adminq_work_limit));
6102
6103         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6104         /* re-enable Admin queue interrupt cause */
6105         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6106         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6107         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6108         i40e_flush(hw);
6109
6110         kfree(event.msg_buf);
6111 }
6112
6113 /**
6114  * i40e_verify_eeprom - make sure eeprom is good to use
6115  * @pf: board private structure
6116  **/
6117 static void i40e_verify_eeprom(struct i40e_pf *pf)
6118 {
6119         int err;
6120
6121         err = i40e_diag_eeprom_test(&pf->hw);
6122         if (err) {
6123                 /* retry in case of garbage read */
6124                 err = i40e_diag_eeprom_test(&pf->hw);
6125                 if (err) {
6126                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6127                                  err);
6128                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6129                 }
6130         }
6131
6132         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6133                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6134                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6135         }
6136 }
6137
6138 /**
6139  * i40e_enable_pf_switch_lb
6140  * @pf: pointer to the PF structure
6141  *
6142  * enable switch loop back or die - no point in a return value
6143  **/
6144 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6145 {
6146         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6147         struct i40e_vsi_context ctxt;
6148         int ret;
6149
6150         ctxt.seid = pf->main_vsi_seid;
6151         ctxt.pf_num = pf->hw.pf_id;
6152         ctxt.vf_num = 0;
6153         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6154         if (ret) {
6155                 dev_info(&pf->pdev->dev,
6156                          "couldn't get PF vsi config, err %s aq_err %s\n",
6157                          i40e_stat_str(&pf->hw, ret),
6158                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6159                 return;
6160         }
6161         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6162         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6163         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6164
6165         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6166         if (ret) {
6167                 dev_info(&pf->pdev->dev,
6168                          "update vsi switch failed, err %s aq_err %s\n",
6169                          i40e_stat_str(&pf->hw, ret),
6170                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6171         }
6172 }
6173
6174 /**
6175  * i40e_disable_pf_switch_lb
6176  * @pf: pointer to the PF structure
6177  *
6178  * disable switch loop back or die - no point in a return value
6179  **/
6180 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6181 {
6182         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6183         struct i40e_vsi_context ctxt;
6184         int ret;
6185
6186         ctxt.seid = pf->main_vsi_seid;
6187         ctxt.pf_num = pf->hw.pf_id;
6188         ctxt.vf_num = 0;
6189         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6190         if (ret) {
6191                 dev_info(&pf->pdev->dev,
6192                          "couldn't get PF vsi config, err %s aq_err %s\n",
6193                          i40e_stat_str(&pf->hw, ret),
6194                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6195                 return;
6196         }
6197         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6198         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6199         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6200
6201         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6202         if (ret) {
6203                 dev_info(&pf->pdev->dev,
6204                          "update vsi switch failed, err %s aq_err %s\n",
6205                          i40e_stat_str(&pf->hw, ret),
6206                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6207         }
6208 }
6209
6210 /**
6211  * i40e_config_bridge_mode - Configure the HW bridge mode
6212  * @veb: pointer to the bridge instance
6213  *
6214  * Configure the loop back mode for the LAN VSI that is downlink to the
6215  * specified HW bridge instance. It is expected this function is called
6216  * when a new HW bridge is instantiated.
6217  **/
6218 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6219 {
6220         struct i40e_pf *pf = veb->pf;
6221
6222         dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6223                  veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6224         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6225                 i40e_disable_pf_switch_lb(pf);
6226         else
6227                 i40e_enable_pf_switch_lb(pf);
6228 }
6229
6230 /**
6231  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6232  * @veb: pointer to the VEB instance
6233  *
6234  * This is a recursive function that first builds the attached VSIs then
6235  * recurses in to build the next layer of VEB.  We track the connections
6236  * through our own index numbers because the seid's from the HW could
6237  * change across the reset.
6238  **/
6239 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6240 {
6241         struct i40e_vsi *ctl_vsi = NULL;
6242         struct i40e_pf *pf = veb->pf;
6243         int v, veb_idx;
6244         int ret;
6245
6246         /* build VSI that owns this VEB, temporarily attached to base VEB */
6247         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6248                 if (pf->vsi[v] &&
6249                     pf->vsi[v]->veb_idx == veb->idx &&
6250                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6251                         ctl_vsi = pf->vsi[v];
6252                         break;
6253                 }
6254         }
6255         if (!ctl_vsi) {
6256                 dev_info(&pf->pdev->dev,
6257                          "missing owner VSI for veb_idx %d\n", veb->idx);
6258                 ret = -ENOENT;
6259                 goto end_reconstitute;
6260         }
6261         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6262                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6263         ret = i40e_add_vsi(ctl_vsi);
6264         if (ret) {
6265                 dev_info(&pf->pdev->dev,
6266                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6267                          veb->idx, ret);
6268                 goto end_reconstitute;
6269         }
6270         i40e_vsi_reset_stats(ctl_vsi);
6271
6272         /* create the VEB in the switch and move the VSI onto the VEB */
6273         ret = i40e_add_veb(veb, ctl_vsi);
6274         if (ret)
6275                 goto end_reconstitute;
6276
6277         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6278                 veb->bridge_mode = BRIDGE_MODE_VEB;
6279         else
6280                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6281         i40e_config_bridge_mode(veb);
6282
6283         /* create the remaining VSIs attached to this VEB */
6284         for (v = 0; v < pf->num_alloc_vsi; v++) {
6285                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6286                         continue;
6287
6288                 if (pf->vsi[v]->veb_idx == veb->idx) {
6289                         struct i40e_vsi *vsi = pf->vsi[v];
6290                         vsi->uplink_seid = veb->seid;
6291                         ret = i40e_add_vsi(vsi);
6292                         if (ret) {
6293                                 dev_info(&pf->pdev->dev,
6294                                          "rebuild of vsi_idx %d failed: %d\n",
6295                                          v, ret);
6296                                 goto end_reconstitute;
6297                         }
6298                         i40e_vsi_reset_stats(vsi);
6299                 }
6300         }
6301
6302         /* create any VEBs attached to this VEB - RECURSION */
6303         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6304                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6305                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6306                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6307                         if (ret)
6308                                 break;
6309                 }
6310         }
6311
6312 end_reconstitute:
6313         return ret;
6314 }
6315
6316 /**
6317  * i40e_get_capabilities - get info about the HW
6318  * @pf: the PF struct
6319  **/
6320 static int i40e_get_capabilities(struct i40e_pf *pf)
6321 {
6322         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6323         u16 data_size;
6324         int buf_len;
6325         int err;
6326
6327         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6328         do {
6329                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6330                 if (!cap_buf)
6331                         return -ENOMEM;
6332
6333                 /* this loads the data into the hw struct for us */
6334                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6335                                             &data_size,
6336                                             i40e_aqc_opc_list_func_capabilities,
6337                                             NULL);
6338                 /* data loaded, buffer no longer needed */
6339                 kfree(cap_buf);
6340
6341                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6342                         /* retry with a larger buffer */
6343                         buf_len = data_size;
6344                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6345                         dev_info(&pf->pdev->dev,
6346                                  "capability discovery failed, err %s aq_err %s\n",
6347                                  i40e_stat_str(&pf->hw, err),
6348                                  i40e_aq_str(&pf->hw,
6349                                              pf->hw.aq.asq_last_status));
6350                         return -ENODEV;
6351                 }
6352         } while (err);
6353
6354         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
6355             (pf->hw.aq.fw_maj_ver < 2)) {
6356                 pf->hw.func_caps.num_msix_vectors++;
6357                 pf->hw.func_caps.num_msix_vectors_vf++;
6358         }
6359
6360         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6361                 dev_info(&pf->pdev->dev,
6362                          "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",
6363                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6364                          pf->hw.func_caps.num_msix_vectors,
6365                          pf->hw.func_caps.num_msix_vectors_vf,
6366                          pf->hw.func_caps.fd_filters_guaranteed,
6367                          pf->hw.func_caps.fd_filters_best_effort,
6368                          pf->hw.func_caps.num_tx_qp,
6369                          pf->hw.func_caps.num_vsis);
6370
6371 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6372                        + pf->hw.func_caps.num_vfs)
6373         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6374                 dev_info(&pf->pdev->dev,
6375                          "got num_vsis %d, setting num_vsis to %d\n",
6376                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6377                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6378         }
6379
6380         return 0;
6381 }
6382
6383 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6384
6385 /**
6386  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6387  * @pf: board private structure
6388  **/
6389 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6390 {
6391         struct i40e_vsi *vsi;
6392         int i;
6393
6394         /* quick workaround for an NVM issue that leaves a critical register
6395          * uninitialized
6396          */
6397         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6398                 static const u32 hkey[] = {
6399                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6400                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6401                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6402                         0x95b3a76d};
6403
6404                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6405                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6406         }
6407
6408         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6409                 return;
6410
6411         /* find existing VSI and see if it needs configuring */
6412         vsi = NULL;
6413         for (i = 0; i < pf->num_alloc_vsi; i++) {
6414                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6415                         vsi = pf->vsi[i];
6416                         break;
6417                 }
6418         }
6419
6420         /* create a new VSI if none exists */
6421         if (!vsi) {
6422                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6423                                      pf->vsi[pf->lan_vsi]->seid, 0);
6424                 if (!vsi) {
6425                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6426                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6427                         return;
6428                 }
6429         }
6430
6431         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6432 }
6433
6434 /**
6435  * i40e_fdir_teardown - release the Flow Director resources
6436  * @pf: board private structure
6437  **/
6438 static void i40e_fdir_teardown(struct i40e_pf *pf)
6439 {
6440         int i;
6441
6442         i40e_fdir_filter_exit(pf);
6443         for (i = 0; i < pf->num_alloc_vsi; i++) {
6444                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6445                         i40e_vsi_release(pf->vsi[i]);
6446                         break;
6447                 }
6448         }
6449 }
6450
6451 /**
6452  * i40e_prep_for_reset - prep for the core to reset
6453  * @pf: board private structure
6454  *
6455  * Close up the VFs and other things in prep for PF Reset.
6456   **/
6457 static void i40e_prep_for_reset(struct i40e_pf *pf)
6458 {
6459         struct i40e_hw *hw = &pf->hw;
6460         i40e_status ret = 0;
6461         u32 v;
6462
6463         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6464         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6465                 return;
6466
6467         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6468
6469         /* quiesce the VSIs and their queues that are not already DOWN */
6470         i40e_pf_quiesce_all_vsi(pf);
6471
6472         for (v = 0; v < pf->num_alloc_vsi; v++) {
6473                 if (pf->vsi[v])
6474                         pf->vsi[v]->seid = 0;
6475         }
6476
6477         i40e_shutdown_adminq(&pf->hw);
6478
6479         /* call shutdown HMC */
6480         if (hw->hmc.hmc_obj) {
6481                 ret = i40e_shutdown_lan_hmc(hw);
6482                 if (ret)
6483                         dev_warn(&pf->pdev->dev,
6484                                  "shutdown_lan_hmc failed: %d\n", ret);
6485         }
6486 }
6487
6488 /**
6489  * i40e_send_version - update firmware with driver version
6490  * @pf: PF struct
6491  */
6492 static void i40e_send_version(struct i40e_pf *pf)
6493 {
6494         struct i40e_driver_version dv;
6495
6496         dv.major_version = DRV_VERSION_MAJOR;
6497         dv.minor_version = DRV_VERSION_MINOR;
6498         dv.build_version = DRV_VERSION_BUILD;
6499         dv.subbuild_version = 0;
6500         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6501         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6502 }
6503
6504 /**
6505  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6506  * @pf: board private structure
6507  * @reinit: if the Main VSI needs to re-initialized.
6508  **/
6509 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6510 {
6511         struct i40e_hw *hw = &pf->hw;
6512         u8 set_fc_aq_fail = 0;
6513         i40e_status ret;
6514         u32 v;
6515
6516         /* Now we wait for GRST to settle out.
6517          * We don't have to delete the VEBs or VSIs from the hw switch
6518          * because the reset will make them disappear.
6519          */
6520         ret = i40e_pf_reset(hw);
6521         if (ret) {
6522                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6523                 set_bit(__I40E_RESET_FAILED, &pf->state);
6524                 goto clear_recovery;
6525         }
6526         pf->pfr_count++;
6527
6528         if (test_bit(__I40E_DOWN, &pf->state))
6529                 goto clear_recovery;
6530         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6531
6532         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6533         ret = i40e_init_adminq(&pf->hw);
6534         if (ret) {
6535                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6536                          i40e_stat_str(&pf->hw, ret),
6537                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6538                 goto clear_recovery;
6539         }
6540
6541         /* re-verify the eeprom if we just had an EMP reset */
6542         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6543                 i40e_verify_eeprom(pf);
6544
6545         i40e_clear_pxe_mode(hw);
6546         ret = i40e_get_capabilities(pf);
6547         if (ret)
6548                 goto end_core_reset;
6549
6550         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6551                                 hw->func_caps.num_rx_qp,
6552                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6553         if (ret) {
6554                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6555                 goto end_core_reset;
6556         }
6557         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6558         if (ret) {
6559                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6560                 goto end_core_reset;
6561         }
6562
6563 #ifdef CONFIG_I40E_DCB
6564         ret = i40e_init_pf_dcb(pf);
6565         if (ret) {
6566                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6567                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6568                 /* Continue without DCB enabled */
6569         }
6570 #endif /* CONFIG_I40E_DCB */
6571 #ifdef I40E_FCOE
6572         ret = i40e_init_pf_fcoe(pf);
6573         if (ret)
6574                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", ret);
6575
6576 #endif
6577         /* do basic switch setup */
6578         ret = i40e_setup_pf_switch(pf, reinit);
6579         if (ret)
6580                 goto end_core_reset;
6581
6582         /* driver is only interested in link up/down and module qualification
6583          * reports from firmware
6584          */
6585         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6586                                        I40E_AQ_EVENT_LINK_UPDOWN |
6587                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6588         if (ret)
6589                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6590                          i40e_stat_str(&pf->hw, ret),
6591                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6592
6593         /* make sure our flow control settings are restored */
6594         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6595         if (ret)
6596                 dev_info(&pf->pdev->dev, "set fc fail, err %s aq_err %s\n",
6597                          i40e_stat_str(&pf->hw, ret),
6598                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6599
6600         /* Rebuild the VSIs and VEBs that existed before reset.
6601          * They are still in our local switch element arrays, so only
6602          * need to rebuild the switch model in the HW.
6603          *
6604          * If there were VEBs but the reconstitution failed, we'll try
6605          * try to recover minimal use by getting the basic PF VSI working.
6606          */
6607         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6608                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6609                 /* find the one VEB connected to the MAC, and find orphans */
6610                 for (v = 0; v < I40E_MAX_VEB; v++) {
6611                         if (!pf->veb[v])
6612                                 continue;
6613
6614                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6615                             pf->veb[v]->uplink_seid == 0) {
6616                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6617
6618                                 if (!ret)
6619                                         continue;
6620
6621                                 /* If Main VEB failed, we're in deep doodoo,
6622                                  * so give up rebuilding the switch and set up
6623                                  * for minimal rebuild of PF VSI.
6624                                  * If orphan failed, we'll report the error
6625                                  * but try to keep going.
6626                                  */
6627                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6628                                         dev_info(&pf->pdev->dev,
6629                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6630                                                  ret);
6631                                         pf->vsi[pf->lan_vsi]->uplink_seid
6632                                                                 = pf->mac_seid;
6633                                         break;
6634                                 } else if (pf->veb[v]->uplink_seid == 0) {
6635                                         dev_info(&pf->pdev->dev,
6636                                                  "rebuild of orphan VEB failed: %d\n",
6637                                                  ret);
6638                                 }
6639                         }
6640                 }
6641         }
6642
6643         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6644                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6645                 /* no VEB, so rebuild only the Main VSI */
6646                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6647                 if (ret) {
6648                         dev_info(&pf->pdev->dev,
6649                                  "rebuild of Main VSI failed: %d\n", ret);
6650                         goto end_core_reset;
6651                 }
6652         }
6653
6654         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
6655             (pf->hw.aq.fw_maj_ver < 4)) {
6656                 msleep(75);
6657                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6658                 if (ret)
6659                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6660                                  i40e_stat_str(&pf->hw, ret),
6661                                  i40e_aq_str(&pf->hw,
6662                                              pf->hw.aq.asq_last_status));
6663         }
6664         /* reinit the misc interrupt */
6665         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6666                 ret = i40e_setup_misc_vector(pf);
6667
6668         /* restart the VSIs that were rebuilt and running before the reset */
6669         i40e_pf_unquiesce_all_vsi(pf);
6670
6671         if (pf->num_alloc_vfs) {
6672                 for (v = 0; v < pf->num_alloc_vfs; v++)
6673                         i40e_reset_vf(&pf->vf[v], true);
6674         }
6675
6676         /* tell the firmware that we're starting */
6677         i40e_send_version(pf);
6678
6679 end_core_reset:
6680         clear_bit(__I40E_RESET_FAILED, &pf->state);
6681 clear_recovery:
6682         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6683 }
6684
6685 /**
6686  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6687  * @pf: board private structure
6688  *
6689  * Close up the VFs and other things in prep for a Core Reset,
6690  * then get ready to rebuild the world.
6691  **/
6692 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6693 {
6694         i40e_prep_for_reset(pf);
6695         i40e_reset_and_rebuild(pf, false);
6696 }
6697
6698 /**
6699  * i40e_handle_mdd_event
6700  * @pf: pointer to the PF structure
6701  *
6702  * Called from the MDD irq handler to identify possibly malicious vfs
6703  **/
6704 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6705 {
6706         struct i40e_hw *hw = &pf->hw;
6707         bool mdd_detected = false;
6708         bool pf_mdd_detected = false;
6709         struct i40e_vf *vf;
6710         u32 reg;
6711         int i;
6712
6713         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6714                 return;
6715
6716         /* find what triggered the MDD event */
6717         reg = rd32(hw, I40E_GL_MDET_TX);
6718         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6719                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6720                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6721                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6722                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6723                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6724                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6725                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6726                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6727                                 pf->hw.func_caps.base_queue;
6728                 if (netif_msg_tx_err(pf))
6729                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6730                                  event, queue, pf_num, vf_num);
6731                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6732                 mdd_detected = true;
6733         }
6734         reg = rd32(hw, I40E_GL_MDET_RX);
6735         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6736                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6737                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6738                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6739                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6740                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6741                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6742                                 pf->hw.func_caps.base_queue;
6743                 if (netif_msg_rx_err(pf))
6744                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6745                                  event, queue, func);
6746                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6747                 mdd_detected = true;
6748         }
6749
6750         if (mdd_detected) {
6751                 reg = rd32(hw, I40E_PF_MDET_TX);
6752                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6753                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6754                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6755                         pf_mdd_detected = true;
6756                 }
6757                 reg = rd32(hw, I40E_PF_MDET_RX);
6758                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6759                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6760                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6761                         pf_mdd_detected = true;
6762                 }
6763                 /* Queue belongs to the PF, initiate a reset */
6764                 if (pf_mdd_detected) {
6765                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6766                         i40e_service_event_schedule(pf);
6767                 }
6768         }
6769
6770         /* see if one of the VFs needs its hand slapped */
6771         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6772                 vf = &(pf->vf[i]);
6773                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6774                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6775                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6776                         vf->num_mdd_events++;
6777                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6778                                  i);
6779                 }
6780
6781                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6782                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6783                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6784                         vf->num_mdd_events++;
6785                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6786                                  i);
6787                 }
6788
6789                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6790                         dev_info(&pf->pdev->dev,
6791                                  "Too many MDD events on VF %d, disabled\n", i);
6792                         dev_info(&pf->pdev->dev,
6793                                  "Use PF Control I/F to re-enable the VF\n");
6794                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6795                 }
6796         }
6797
6798         /* re-enable mdd interrupt cause */
6799         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6800         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6801         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6802         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6803         i40e_flush(hw);
6804 }
6805
6806 #ifdef CONFIG_I40E_VXLAN
6807 /**
6808  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6809  * @pf: board private structure
6810  **/
6811 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6812 {
6813         struct i40e_hw *hw = &pf->hw;
6814         i40e_status ret;
6815         __be16 port;
6816         int i;
6817
6818         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
6819                 return;
6820
6821         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
6822
6823         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6824                 if (pf->pending_vxlan_bitmap & BIT_ULL(i)) {
6825                         pf->pending_vxlan_bitmap &= ~BIT_ULL(i);
6826                         port = pf->vxlan_ports[i];
6827                         if (port)
6828                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
6829                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
6830                                                      NULL, NULL);
6831                         else
6832                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
6833
6834                         if (ret) {
6835                                 dev_info(&pf->pdev->dev,
6836                                          "%s vxlan port %d, index %d failed, err %s aq_err %s\n",
6837                                          port ? "add" : "delete",
6838                                          ntohs(port), i,
6839                                          i40e_stat_str(&pf->hw, ret),
6840                                          i40e_aq_str(&pf->hw,
6841                                                     pf->hw.aq.asq_last_status));
6842                                 pf->vxlan_ports[i] = 0;
6843                         }
6844                 }
6845         }
6846 }
6847
6848 #endif
6849 /**
6850  * i40e_service_task - Run the driver's async subtasks
6851  * @work: pointer to work_struct containing our data
6852  **/
6853 static void i40e_service_task(struct work_struct *work)
6854 {
6855         struct i40e_pf *pf = container_of(work,
6856                                           struct i40e_pf,
6857                                           service_task);
6858         unsigned long start_time = jiffies;
6859
6860         /* don't bother with service tasks if a reset is in progress */
6861         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6862                 i40e_service_event_complete(pf);
6863                 return;
6864         }
6865
6866         i40e_detect_recover_hung(pf);
6867         i40e_reset_subtask(pf);
6868         i40e_handle_mdd_event(pf);
6869         i40e_vc_process_vflr_event(pf);
6870         i40e_watchdog_subtask(pf);
6871         i40e_fdir_reinit_subtask(pf);
6872         i40e_sync_filters_subtask(pf);
6873 #ifdef CONFIG_I40E_VXLAN
6874         i40e_sync_vxlan_filters_subtask(pf);
6875 #endif
6876         i40e_clean_adminq_subtask(pf);
6877
6878         i40e_service_event_complete(pf);
6879
6880         /* If the tasks have taken longer than one timer cycle or there
6881          * is more work to be done, reschedule the service task now
6882          * rather than wait for the timer to tick again.
6883          */
6884         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
6885             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
6886             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
6887             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
6888                 i40e_service_event_schedule(pf);
6889 }
6890
6891 /**
6892  * i40e_service_timer - timer callback
6893  * @data: pointer to PF struct
6894  **/
6895 static void i40e_service_timer(unsigned long data)
6896 {
6897         struct i40e_pf *pf = (struct i40e_pf *)data;
6898
6899         mod_timer(&pf->service_timer,
6900                   round_jiffies(jiffies + pf->service_timer_period));
6901         i40e_service_event_schedule(pf);
6902 }
6903
6904 /**
6905  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6906  * @vsi: the VSI being configured
6907  **/
6908 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6909 {
6910         struct i40e_pf *pf = vsi->back;
6911
6912         switch (vsi->type) {
6913         case I40E_VSI_MAIN:
6914                 vsi->alloc_queue_pairs = pf->num_lan_qps;
6915                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6916                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6917                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6918                         vsi->num_q_vectors = pf->num_lan_msix;
6919                 else
6920                         vsi->num_q_vectors = 1;
6921
6922                 break;
6923
6924         case I40E_VSI_FDIR:
6925                 vsi->alloc_queue_pairs = 1;
6926                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6927                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6928                 vsi->num_q_vectors = 1;
6929                 break;
6930
6931         case I40E_VSI_VMDQ2:
6932                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6933                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6934                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6935                 vsi->num_q_vectors = pf->num_vmdq_msix;
6936                 break;
6937
6938         case I40E_VSI_SRIOV:
6939                 vsi->alloc_queue_pairs = pf->num_vf_qps;
6940                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6941                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6942                 break;
6943
6944 #ifdef I40E_FCOE
6945         case I40E_VSI_FCOE:
6946                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
6947                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6948                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6949                 vsi->num_q_vectors = pf->num_fcoe_msix;
6950                 break;
6951
6952 #endif /* I40E_FCOE */
6953         default:
6954                 WARN_ON(1);
6955                 return -ENODATA;
6956         }
6957
6958         return 0;
6959 }
6960
6961 /**
6962  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6963  * @type: VSI pointer
6964  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6965  *
6966  * On error: returns error code (negative)
6967  * On success: returns 0
6968  **/
6969 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6970 {
6971         int size;
6972         int ret = 0;
6973
6974         /* allocate memory for both Tx and Rx ring pointers */
6975         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6976         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6977         if (!vsi->tx_rings)
6978                 return -ENOMEM;
6979         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6980
6981         if (alloc_qvectors) {
6982                 /* allocate memory for q_vector pointers */
6983                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
6984                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6985                 if (!vsi->q_vectors) {
6986                         ret = -ENOMEM;
6987                         goto err_vectors;
6988                 }
6989         }
6990         return ret;
6991
6992 err_vectors:
6993         kfree(vsi->tx_rings);
6994         return ret;
6995 }
6996
6997 /**
6998  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
6999  * @pf: board private structure
7000  * @type: type of VSI
7001  *
7002  * On error: returns error code (negative)
7003  * On success: returns vsi index in PF (positive)
7004  **/
7005 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7006 {
7007         int ret = -ENODEV;
7008         struct i40e_vsi *vsi;
7009         int vsi_idx;
7010         int i;
7011
7012         /* Need to protect the allocation of the VSIs at the PF level */
7013         mutex_lock(&pf->switch_mutex);
7014
7015         /* VSI list may be fragmented if VSI creation/destruction has
7016          * been happening.  We can afford to do a quick scan to look
7017          * for any free VSIs in the list.
7018          *
7019          * find next empty vsi slot, looping back around if necessary
7020          */
7021         i = pf->next_vsi;
7022         while (i < pf->num_alloc_vsi && pf->vsi[i])
7023                 i++;
7024         if (i >= pf->num_alloc_vsi) {
7025                 i = 0;
7026                 while (i < pf->next_vsi && pf->vsi[i])
7027                         i++;
7028         }
7029
7030         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7031                 vsi_idx = i;             /* Found one! */
7032         } else {
7033                 ret = -ENODEV;
7034                 goto unlock_pf;  /* out of VSI slots! */
7035         }
7036         pf->next_vsi = ++i;
7037
7038         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7039         if (!vsi) {
7040                 ret = -ENOMEM;
7041                 goto unlock_pf;
7042         }
7043         vsi->type = type;
7044         vsi->back = pf;
7045         set_bit(__I40E_DOWN, &vsi->state);
7046         vsi->flags = 0;
7047         vsi->idx = vsi_idx;
7048         vsi->rx_itr_setting = pf->rx_itr_default;
7049         vsi->tx_itr_setting = pf->tx_itr_default;
7050         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7051                                 pf->rss_table_size : 64;
7052         vsi->netdev_registered = false;
7053         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7054         INIT_LIST_HEAD(&vsi->mac_filter_list);
7055         vsi->irqs_ready = false;
7056
7057         ret = i40e_set_num_rings_in_vsi(vsi);
7058         if (ret)
7059                 goto err_rings;
7060
7061         ret = i40e_vsi_alloc_arrays(vsi, true);
7062         if (ret)
7063                 goto err_rings;
7064
7065         /* Setup default MSIX irq handler for VSI */
7066         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7067
7068         pf->vsi[vsi_idx] = vsi;
7069         ret = vsi_idx;
7070         goto unlock_pf;
7071
7072 err_rings:
7073         pf->next_vsi = i - 1;
7074         kfree(vsi);
7075 unlock_pf:
7076         mutex_unlock(&pf->switch_mutex);
7077         return ret;
7078 }
7079
7080 /**
7081  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7082  * @type: VSI pointer
7083  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7084  *
7085  * On error: returns error code (negative)
7086  * On success: returns 0
7087  **/
7088 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7089 {
7090         /* free the ring and vector containers */
7091         if (free_qvectors) {
7092                 kfree(vsi->q_vectors);
7093                 vsi->q_vectors = NULL;
7094         }
7095         kfree(vsi->tx_rings);
7096         vsi->tx_rings = NULL;
7097         vsi->rx_rings = NULL;
7098 }
7099
7100 /**
7101  * i40e_vsi_clear - Deallocate the VSI provided
7102  * @vsi: the VSI being un-configured
7103  **/
7104 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7105 {
7106         struct i40e_pf *pf;
7107
7108         if (!vsi)
7109                 return 0;
7110
7111         if (!vsi->back)
7112                 goto free_vsi;
7113         pf = vsi->back;
7114
7115         mutex_lock(&pf->switch_mutex);
7116         if (!pf->vsi[vsi->idx]) {
7117                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7118                         vsi->idx, vsi->idx, vsi, vsi->type);
7119                 goto unlock_vsi;
7120         }
7121
7122         if (pf->vsi[vsi->idx] != vsi) {
7123                 dev_err(&pf->pdev->dev,
7124                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7125                         pf->vsi[vsi->idx]->idx,
7126                         pf->vsi[vsi->idx],
7127                         pf->vsi[vsi->idx]->type,
7128                         vsi->idx, vsi, vsi->type);
7129                 goto unlock_vsi;
7130         }
7131
7132         /* updates the PF for this cleared vsi */
7133         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7134         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7135
7136         i40e_vsi_free_arrays(vsi, true);
7137
7138         pf->vsi[vsi->idx] = NULL;
7139         if (vsi->idx < pf->next_vsi)
7140                 pf->next_vsi = vsi->idx;
7141
7142 unlock_vsi:
7143         mutex_unlock(&pf->switch_mutex);
7144 free_vsi:
7145         kfree(vsi);
7146
7147         return 0;
7148 }
7149
7150 /**
7151  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7152  * @vsi: the VSI being cleaned
7153  **/
7154 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7155 {
7156         int i;
7157
7158         if (vsi->tx_rings && vsi->tx_rings[0]) {
7159                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7160                         kfree_rcu(vsi->tx_rings[i], rcu);
7161                         vsi->tx_rings[i] = NULL;
7162                         vsi->rx_rings[i] = NULL;
7163                 }
7164         }
7165 }
7166
7167 /**
7168  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7169  * @vsi: the VSI being configured
7170  **/
7171 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7172 {
7173         struct i40e_ring *tx_ring, *rx_ring;
7174         struct i40e_pf *pf = vsi->back;
7175         int i;
7176
7177         /* Set basic values in the rings to be used later during open() */
7178         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7179                 /* allocate space for both Tx and Rx in one shot */
7180                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7181                 if (!tx_ring)
7182                         goto err_out;
7183
7184                 tx_ring->queue_index = i;
7185                 tx_ring->reg_idx = vsi->base_queue + i;
7186                 tx_ring->ring_active = false;
7187                 tx_ring->vsi = vsi;
7188                 tx_ring->netdev = vsi->netdev;
7189                 tx_ring->dev = &pf->pdev->dev;
7190                 tx_ring->count = vsi->num_desc;
7191                 tx_ring->size = 0;
7192                 tx_ring->dcb_tc = 0;
7193                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7194                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7195                 if (vsi->back->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE)
7196                         tx_ring->flags |= I40E_TXR_FLAGS_OUTER_UDP_CSUM;
7197                 vsi->tx_rings[i] = tx_ring;
7198
7199                 rx_ring = &tx_ring[1];
7200                 rx_ring->queue_index = i;
7201                 rx_ring->reg_idx = vsi->base_queue + i;
7202                 rx_ring->ring_active = false;
7203                 rx_ring->vsi = vsi;
7204                 rx_ring->netdev = vsi->netdev;
7205                 rx_ring->dev = &pf->pdev->dev;
7206                 rx_ring->count = vsi->num_desc;
7207                 rx_ring->size = 0;
7208                 rx_ring->dcb_tc = 0;
7209                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
7210                         set_ring_16byte_desc_enabled(rx_ring);
7211                 else
7212                         clear_ring_16byte_desc_enabled(rx_ring);
7213                 vsi->rx_rings[i] = rx_ring;
7214         }
7215
7216         return 0;
7217
7218 err_out:
7219         i40e_vsi_clear_rings(vsi);
7220         return -ENOMEM;
7221 }
7222
7223 /**
7224  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7225  * @pf: board private structure
7226  * @vectors: the number of MSI-X vectors to request
7227  *
7228  * Returns the number of vectors reserved, or error
7229  **/
7230 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7231 {
7232         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7233                                         I40E_MIN_MSIX, vectors);
7234         if (vectors < 0) {
7235                 dev_info(&pf->pdev->dev,
7236                          "MSI-X vector reservation failed: %d\n", vectors);
7237                 vectors = 0;
7238         }
7239
7240         return vectors;
7241 }
7242
7243 /**
7244  * i40e_init_msix - Setup the MSIX capability
7245  * @pf: board private structure
7246  *
7247  * Work with the OS to set up the MSIX vectors needed.
7248  *
7249  * Returns the number of vectors reserved or negative on failure
7250  **/
7251 static int i40e_init_msix(struct i40e_pf *pf)
7252 {
7253         struct i40e_hw *hw = &pf->hw;
7254         int vectors_left;
7255         int v_budget, i;
7256         int v_actual;
7257
7258         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7259                 return -ENODEV;
7260
7261         /* The number of vectors we'll request will be comprised of:
7262          *   - Add 1 for "other" cause for Admin Queue events, etc.
7263          *   - The number of LAN queue pairs
7264          *      - Queues being used for RSS.
7265          *              We don't need as many as max_rss_size vectors.
7266          *              use rss_size instead in the calculation since that
7267          *              is governed by number of cpus in the system.
7268          *      - assumes symmetric Tx/Rx pairing
7269          *   - The number of VMDq pairs
7270 #ifdef I40E_FCOE
7271          *   - The number of FCOE qps.
7272 #endif
7273          * Once we count this up, try the request.
7274          *
7275          * If we can't get what we want, we'll simplify to nearly nothing
7276          * and try again.  If that still fails, we punt.
7277          */
7278         vectors_left = hw->func_caps.num_msix_vectors;
7279         v_budget = 0;
7280
7281         /* reserve one vector for miscellaneous handler */
7282         if (vectors_left) {
7283                 v_budget++;
7284                 vectors_left--;
7285         }
7286
7287         /* reserve vectors for the main PF traffic queues */
7288         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7289         vectors_left -= pf->num_lan_msix;
7290         v_budget += pf->num_lan_msix;
7291
7292         /* reserve one vector for sideband flow director */
7293         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7294                 if (vectors_left) {
7295                         v_budget++;
7296                         vectors_left--;
7297                 } else {
7298                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7299                 }
7300         }
7301
7302 #ifdef I40E_FCOE
7303         /* can we reserve enough for FCoE? */
7304         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7305                 if (!vectors_left)
7306                         pf->num_fcoe_msix = 0;
7307                 else if (vectors_left >= pf->num_fcoe_qps)
7308                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7309                 else
7310                         pf->num_fcoe_msix = 1;
7311                 v_budget += pf->num_fcoe_msix;
7312                 vectors_left -= pf->num_fcoe_msix;
7313         }
7314
7315 #endif
7316         /* any vectors left over go for VMDq support */
7317         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7318                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7319                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7320
7321                 /* if we're short on vectors for what's desired, we limit
7322                  * the queues per vmdq.  If this is still more than are
7323                  * available, the user will need to change the number of
7324                  * queues/vectors used by the PF later with the ethtool
7325                  * channels command
7326                  */
7327                 if (vmdq_vecs < vmdq_vecs_wanted)
7328                         pf->num_vmdq_qps = 1;
7329                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7330
7331                 v_budget += vmdq_vecs;
7332                 vectors_left -= vmdq_vecs;
7333         }
7334
7335         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7336                                    GFP_KERNEL);
7337         if (!pf->msix_entries)
7338                 return -ENOMEM;
7339
7340         for (i = 0; i < v_budget; i++)
7341                 pf->msix_entries[i].entry = i;
7342         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7343
7344         if (v_actual != v_budget) {
7345                 /* If we have limited resources, we will start with no vectors
7346                  * for the special features and then allocate vectors to some
7347                  * of these features based on the policy and at the end disable
7348                  * the features that did not get any vectors.
7349                  */
7350 #ifdef I40E_FCOE
7351                 pf->num_fcoe_qps = 0;
7352                 pf->num_fcoe_msix = 0;
7353 #endif
7354                 pf->num_vmdq_msix = 0;
7355         }
7356
7357         if (v_actual < I40E_MIN_MSIX) {
7358                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7359                 kfree(pf->msix_entries);
7360                 pf->msix_entries = NULL;
7361                 return -ENODEV;
7362
7363         } else if (v_actual == I40E_MIN_MSIX) {
7364                 /* Adjust for minimal MSIX use */
7365                 pf->num_vmdq_vsis = 0;
7366                 pf->num_vmdq_qps = 0;
7367                 pf->num_lan_qps = 1;
7368                 pf->num_lan_msix = 1;
7369
7370         } else if (v_actual != v_budget) {
7371                 int vec;
7372
7373                 /* reserve the misc vector */
7374                 vec = v_actual - 1;
7375
7376                 /* Scale vector usage down */
7377                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7378                 pf->num_vmdq_vsis = 1;
7379                 pf->num_vmdq_qps = 1;
7380                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7381
7382                 /* partition out the remaining vectors */
7383                 switch (vec) {
7384                 case 2:
7385                         pf->num_lan_msix = 1;
7386                         break;
7387                 case 3:
7388 #ifdef I40E_FCOE
7389                         /* give one vector to FCoE */
7390                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7391                                 pf->num_lan_msix = 1;
7392                                 pf->num_fcoe_msix = 1;
7393                         }
7394 #else
7395                         pf->num_lan_msix = 2;
7396 #endif
7397                         break;
7398                 default:
7399 #ifdef I40E_FCOE
7400                         /* give one vector to FCoE */
7401                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7402                                 pf->num_fcoe_msix = 1;
7403                                 vec--;
7404                         }
7405 #endif
7406                         /* give the rest to the PF */
7407                         pf->num_lan_msix = min_t(int, vec, pf->num_lan_qps);
7408                         break;
7409                 }
7410         }
7411
7412         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7413             (pf->num_vmdq_msix == 0)) {
7414                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7415                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7416         }
7417 #ifdef I40E_FCOE
7418
7419         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7420                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7421                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7422         }
7423 #endif
7424         return v_actual;
7425 }
7426
7427 /**
7428  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7429  * @vsi: the VSI being configured
7430  * @v_idx: index of the vector in the vsi struct
7431  *
7432  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7433  **/
7434 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7435 {
7436         struct i40e_q_vector *q_vector;
7437
7438         /* allocate q_vector */
7439         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7440         if (!q_vector)
7441                 return -ENOMEM;
7442
7443         q_vector->vsi = vsi;
7444         q_vector->v_idx = v_idx;
7445         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7446         if (vsi->netdev)
7447                 netif_napi_add(vsi->netdev, &q_vector->napi,
7448                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7449
7450         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7451         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7452
7453         /* tie q_vector and vsi together */
7454         vsi->q_vectors[v_idx] = q_vector;
7455
7456         return 0;
7457 }
7458
7459 /**
7460  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7461  * @vsi: the VSI being configured
7462  *
7463  * We allocate one q_vector per queue interrupt.  If allocation fails we
7464  * return -ENOMEM.
7465  **/
7466 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7467 {
7468         struct i40e_pf *pf = vsi->back;
7469         int v_idx, num_q_vectors;
7470         int err;
7471
7472         /* if not MSIX, give the one vector only to the LAN VSI */
7473         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7474                 num_q_vectors = vsi->num_q_vectors;
7475         else if (vsi == pf->vsi[pf->lan_vsi])
7476                 num_q_vectors = 1;
7477         else
7478                 return -EINVAL;
7479
7480         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7481                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7482                 if (err)
7483                         goto err_out;
7484         }
7485
7486         return 0;
7487
7488 err_out:
7489         while (v_idx--)
7490                 i40e_free_q_vector(vsi, v_idx);
7491
7492         return err;
7493 }
7494
7495 /**
7496  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7497  * @pf: board private structure to initialize
7498  **/
7499 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7500 {
7501         int vectors = 0;
7502         ssize_t size;
7503
7504         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7505                 vectors = i40e_init_msix(pf);
7506                 if (vectors < 0) {
7507                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7508 #ifdef I40E_FCOE
7509                                        I40E_FLAG_FCOE_ENABLED   |
7510 #endif
7511                                        I40E_FLAG_RSS_ENABLED    |
7512                                        I40E_FLAG_DCB_CAPABLE    |
7513                                        I40E_FLAG_SRIOV_ENABLED  |
7514                                        I40E_FLAG_FD_SB_ENABLED  |
7515                                        I40E_FLAG_FD_ATR_ENABLED |
7516                                        I40E_FLAG_VMDQ_ENABLED);
7517
7518                         /* rework the queue expectations without MSIX */
7519                         i40e_determine_queue_usage(pf);
7520                 }
7521         }
7522
7523         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7524             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7525                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7526                 vectors = pci_enable_msi(pf->pdev);
7527                 if (vectors < 0) {
7528                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7529                                  vectors);
7530                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7531                 }
7532                 vectors = 1;  /* one MSI or Legacy vector */
7533         }
7534
7535         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7536                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7537
7538         /* set up vector assignment tracking */
7539         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7540         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7541         if (!pf->irq_pile) {
7542                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7543                 return -ENOMEM;
7544         }
7545         pf->irq_pile->num_entries = vectors;
7546         pf->irq_pile->search_hint = 0;
7547
7548         /* track first vector for misc interrupts, ignore return */
7549         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7550
7551         return 0;
7552 }
7553
7554 /**
7555  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7556  * @pf: board private structure
7557  *
7558  * This sets up the handler for MSIX 0, which is used to manage the
7559  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7560  * when in MSI or Legacy interrupt mode.
7561  **/
7562 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7563 {
7564         struct i40e_hw *hw = &pf->hw;
7565         int err = 0;
7566
7567         /* Only request the irq if this is the first time through, and
7568          * not when we're rebuilding after a Reset
7569          */
7570         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7571                 err = request_irq(pf->msix_entries[0].vector,
7572                                   i40e_intr, 0, pf->int_name, pf);
7573                 if (err) {
7574                         dev_info(&pf->pdev->dev,
7575                                  "request_irq for %s failed: %d\n",
7576                                  pf->int_name, err);
7577                         return -EFAULT;
7578                 }
7579         }
7580
7581         i40e_enable_misc_int_causes(pf);
7582
7583         /* associate no queues to the misc vector */
7584         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7585         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7586
7587         i40e_flush(hw);
7588
7589         i40e_irq_dynamic_enable_icr0(pf);
7590
7591         return err;
7592 }
7593
7594 /**
7595  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7596  * @vsi: vsi structure
7597  * @seed: RSS hash seed
7598  **/
7599 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed)
7600 {
7601         struct i40e_aqc_get_set_rss_key_data rss_key;
7602         struct i40e_pf *pf = vsi->back;
7603         struct i40e_hw *hw = &pf->hw;
7604         bool pf_lut = false;
7605         u8 *rss_lut;
7606         int ret, i;
7607
7608         memset(&rss_key, 0, sizeof(rss_key));
7609         memcpy(&rss_key, seed, sizeof(rss_key));
7610
7611         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7612         if (!rss_lut)
7613                 return -ENOMEM;
7614
7615         /* Populate the LUT with max no. of queues in round robin fashion */
7616         for (i = 0; i < vsi->rss_table_size; i++)
7617                 rss_lut[i] = i % vsi->rss_size;
7618
7619         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
7620         if (ret) {
7621                 dev_info(&pf->pdev->dev,
7622                          "Cannot set RSS key, err %s aq_err %s\n",
7623                          i40e_stat_str(&pf->hw, ret),
7624                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7625                 return ret;
7626         }
7627
7628         if (vsi->type == I40E_VSI_MAIN)
7629                 pf_lut = true;
7630
7631         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
7632                                   vsi->rss_table_size);
7633         if (ret)
7634                 dev_info(&pf->pdev->dev,
7635                          "Cannot set RSS lut, err %s aq_err %s\n",
7636                          i40e_stat_str(&pf->hw, ret),
7637                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7638
7639         return ret;
7640 }
7641
7642 /**
7643  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
7644  * @vsi: VSI structure
7645  **/
7646 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
7647 {
7648         u8 seed[I40E_HKEY_ARRAY_SIZE];
7649         struct i40e_pf *pf = vsi->back;
7650
7651         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7652         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7653
7654         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7655                 return i40e_config_rss_aq(vsi, seed);
7656
7657         return 0;
7658 }
7659
7660 /**
7661  * i40e_config_rss_reg - Prepare for RSS if used
7662  * @pf: board private structure
7663  * @seed: RSS hash seed
7664  **/
7665 static int i40e_config_rss_reg(struct i40e_pf *pf, const u8 *seed)
7666 {
7667         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7668         struct i40e_hw *hw = &pf->hw;
7669         u32 *seed_dw = (u32 *)seed;
7670         u32 current_queue = 0;
7671         u32 lut = 0;
7672         int i, j;
7673
7674         /* Fill out hash function seed */
7675         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7676                 wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
7677
7678         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++) {
7679                 lut = 0;
7680                 for (j = 0; j < 4; j++) {
7681                         if (current_queue == vsi->rss_size)
7682                                 current_queue = 0;
7683                         lut |= ((current_queue) << (8 * j));
7684                         current_queue++;
7685                 }
7686                 wr32(&pf->hw, I40E_PFQF_HLUT(i), lut);
7687         }
7688         i40e_flush(hw);
7689
7690         return 0;
7691 }
7692
7693 /**
7694  * i40e_config_rss - Prepare for RSS if used
7695  * @pf: board private structure
7696  **/
7697 static int i40e_config_rss(struct i40e_pf *pf)
7698 {
7699         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7700         u8 seed[I40E_HKEY_ARRAY_SIZE];
7701         struct i40e_hw *hw = &pf->hw;
7702         u32 reg_val;
7703         u64 hena;
7704
7705         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7706
7707         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
7708         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
7709                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
7710         hena |= i40e_pf_get_default_rss_hena(pf);
7711
7712         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
7713         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
7714
7715         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7716
7717         /* Determine the RSS table size based on the hardware capabilities */
7718         reg_val = rd32(hw, I40E_PFQF_CTL_0);
7719         reg_val = (pf->rss_table_size == 512) ?
7720                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
7721                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
7722         wr32(hw, I40E_PFQF_CTL_0, reg_val);
7723
7724         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7725                 return i40e_config_rss_aq(pf->vsi[pf->lan_vsi], seed);
7726         else
7727                 return i40e_config_rss_reg(pf, seed);
7728 }
7729
7730 /**
7731  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7732  * @pf: board private structure
7733  * @queue_count: the requested queue count for rss.
7734  *
7735  * returns 0 if rss is not enabled, if enabled returns the final rss queue
7736  * count which may be different from the requested queue count.
7737  **/
7738 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7739 {
7740         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7741         int new_rss_size;
7742
7743         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7744                 return 0;
7745
7746         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
7747
7748         if (queue_count != vsi->num_queue_pairs) {
7749                 vsi->req_queue_pairs = queue_count;
7750                 i40e_prep_for_reset(pf);
7751
7752                 pf->rss_size = new_rss_size;
7753
7754                 i40e_reset_and_rebuild(pf, true);
7755                 i40e_config_rss(pf);
7756         }
7757         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
7758         return pf->rss_size;
7759 }
7760
7761 /**
7762  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
7763  * @pf: board private structure
7764  **/
7765 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
7766 {
7767         i40e_status status;
7768         bool min_valid, max_valid;
7769         u32 max_bw, min_bw;
7770
7771         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
7772                                            &min_valid, &max_valid);
7773
7774         if (!status) {
7775                 if (min_valid)
7776                         pf->npar_min_bw = min_bw;
7777                 if (max_valid)
7778                         pf->npar_max_bw = max_bw;
7779         }
7780
7781         return status;
7782 }
7783
7784 /**
7785  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
7786  * @pf: board private structure
7787  **/
7788 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
7789 {
7790         struct i40e_aqc_configure_partition_bw_data bw_data;
7791         i40e_status status;
7792
7793         /* Set the valid bit for this PF */
7794         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
7795         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
7796         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
7797
7798         /* Set the new bandwidths */
7799         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
7800
7801         return status;
7802 }
7803
7804 /**
7805  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
7806  * @pf: board private structure
7807  **/
7808 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
7809 {
7810         /* Commit temporary BW setting to permanent NVM image */
7811         enum i40e_admin_queue_err last_aq_status;
7812         i40e_status ret;
7813         u16 nvm_word;
7814
7815         if (pf->hw.partition_id != 1) {
7816                 dev_info(&pf->pdev->dev,
7817                          "Commit BW only works on partition 1! This is partition %d",
7818                          pf->hw.partition_id);
7819                 ret = I40E_NOT_SUPPORTED;
7820                 goto bw_commit_out;
7821         }
7822
7823         /* Acquire NVM for read access */
7824         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
7825         last_aq_status = pf->hw.aq.asq_last_status;
7826         if (ret) {
7827                 dev_info(&pf->pdev->dev,
7828                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
7829                          i40e_stat_str(&pf->hw, ret),
7830                          i40e_aq_str(&pf->hw, last_aq_status));
7831                 goto bw_commit_out;
7832         }
7833
7834         /* Read word 0x10 of NVM - SW compatibility word 1 */
7835         ret = i40e_aq_read_nvm(&pf->hw,
7836                                I40E_SR_NVM_CONTROL_WORD,
7837                                0x10, sizeof(nvm_word), &nvm_word,
7838                                false, NULL);
7839         /* Save off last admin queue command status before releasing
7840          * the NVM
7841          */
7842         last_aq_status = pf->hw.aq.asq_last_status;
7843         i40e_release_nvm(&pf->hw);
7844         if (ret) {
7845                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
7846                          i40e_stat_str(&pf->hw, ret),
7847                          i40e_aq_str(&pf->hw, last_aq_status));
7848                 goto bw_commit_out;
7849         }
7850
7851         /* Wait a bit for NVM release to complete */
7852         msleep(50);
7853
7854         /* Acquire NVM for write access */
7855         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
7856         last_aq_status = pf->hw.aq.asq_last_status;
7857         if (ret) {
7858                 dev_info(&pf->pdev->dev,
7859                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
7860                          i40e_stat_str(&pf->hw, ret),
7861                          i40e_aq_str(&pf->hw, last_aq_status));
7862                 goto bw_commit_out;
7863         }
7864         /* Write it back out unchanged to initiate update NVM,
7865          * which will force a write of the shadow (alt) RAM to
7866          * the NVM - thus storing the bandwidth values permanently.
7867          */
7868         ret = i40e_aq_update_nvm(&pf->hw,
7869                                  I40E_SR_NVM_CONTROL_WORD,
7870                                  0x10, sizeof(nvm_word),
7871                                  &nvm_word, true, NULL);
7872         /* Save off last admin queue command status before releasing
7873          * the NVM
7874          */
7875         last_aq_status = pf->hw.aq.asq_last_status;
7876         i40e_release_nvm(&pf->hw);
7877         if (ret)
7878                 dev_info(&pf->pdev->dev,
7879                          "BW settings NOT SAVED, err %s aq_err %s\n",
7880                          i40e_stat_str(&pf->hw, ret),
7881                          i40e_aq_str(&pf->hw, last_aq_status));
7882 bw_commit_out:
7883
7884         return ret;
7885 }
7886
7887 /**
7888  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
7889  * @pf: board private structure to initialize
7890  *
7891  * i40e_sw_init initializes the Adapter private data structure.
7892  * Fields are initialized based on PCI device information and
7893  * OS network device settings (MTU size).
7894  **/
7895 static int i40e_sw_init(struct i40e_pf *pf)
7896 {
7897         int err = 0;
7898         int size;
7899
7900         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
7901                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
7902         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
7903         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
7904                 if (I40E_DEBUG_USER & debug)
7905                         pf->hw.debug_mask = debug;
7906                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
7907                                                 I40E_DEFAULT_MSG_ENABLE);
7908         }
7909
7910         /* Set default capability flags */
7911         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
7912                     I40E_FLAG_MSI_ENABLED     |
7913                     I40E_FLAG_MSIX_ENABLED;
7914
7915         if (iommu_present(&pci_bus_type))
7916                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
7917         else
7918                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
7919
7920         /* Set default ITR */
7921         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
7922         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
7923
7924         /* Depending on PF configurations, it is possible that the RSS
7925          * maximum might end up larger than the available queues
7926          */
7927         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
7928         pf->rss_size = 1;
7929         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
7930         pf->rss_size_max = min_t(int, pf->rss_size_max,
7931                                  pf->hw.func_caps.num_tx_qp);
7932         if (pf->hw.func_caps.rss) {
7933                 pf->flags |= I40E_FLAG_RSS_ENABLED;
7934                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
7935         }
7936
7937         /* MFP mode enabled */
7938         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
7939                 pf->flags |= I40E_FLAG_MFP_ENABLED;
7940                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
7941                 if (i40e_get_npar_bw_setting(pf))
7942                         dev_warn(&pf->pdev->dev,
7943                                  "Could not get NPAR bw settings\n");
7944                 else
7945                         dev_info(&pf->pdev->dev,
7946                                  "Min BW = %8.8x, Max BW = %8.8x\n",
7947                                  pf->npar_min_bw, pf->npar_max_bw);
7948         }
7949
7950         /* FW/NVM is not yet fixed in this regard */
7951         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
7952             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
7953                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7954                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
7955                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
7956                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7957                 } else {
7958                         dev_info(&pf->pdev->dev,
7959                                  "Flow Director Sideband mode Disabled in MFP mode\n");
7960                 }
7961                 pf->fdir_pf_filter_count =
7962                                  pf->hw.func_caps.fd_filters_guaranteed;
7963                 pf->hw.fdir_shared_filter_count =
7964                                  pf->hw.func_caps.fd_filters_best_effort;
7965         }
7966
7967         if (pf->hw.func_caps.vmdq) {
7968                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
7969                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
7970         }
7971
7972 #ifdef I40E_FCOE
7973         err = i40e_init_pf_fcoe(pf);
7974         if (err)
7975                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", err);
7976
7977 #endif /* I40E_FCOE */
7978 #ifdef CONFIG_PCI_IOV
7979         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
7980                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
7981                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
7982                 pf->num_req_vfs = min_t(int,
7983                                         pf->hw.func_caps.num_vfs,
7984                                         I40E_MAX_VF_COUNT);
7985         }
7986 #endif /* CONFIG_PCI_IOV */
7987         if (pf->hw.mac.type == I40E_MAC_X722) {
7988                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
7989                              I40E_FLAG_128_QP_RSS_CAPABLE |
7990                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
7991                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
7992                              I40E_FLAG_WB_ON_ITR_CAPABLE |
7993                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE;
7994         }
7995         pf->eeprom_version = 0xDEAD;
7996         pf->lan_veb = I40E_NO_VEB;
7997         pf->lan_vsi = I40E_NO_VSI;
7998
7999         /* set up queue assignment tracking */
8000         size = sizeof(struct i40e_lump_tracking)
8001                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8002         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8003         if (!pf->qp_pile) {
8004                 err = -ENOMEM;
8005                 goto sw_init_done;
8006         }
8007         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8008         pf->qp_pile->search_hint = 0;
8009
8010         pf->tx_timeout_recovery_level = 1;
8011
8012         mutex_init(&pf->switch_mutex);
8013
8014         /* If NPAR is enabled nudge the Tx scheduler */
8015         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8016                 i40e_set_npar_bw_setting(pf);
8017
8018 sw_init_done:
8019         return err;
8020 }
8021
8022 /**
8023  * i40e_set_ntuple - set the ntuple feature flag and take action
8024  * @pf: board private structure to initialize
8025  * @features: the feature set that the stack is suggesting
8026  *
8027  * returns a bool to indicate if reset needs to happen
8028  **/
8029 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8030 {
8031         bool need_reset = false;
8032
8033         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8034          * the state changed, we need to reset.
8035          */
8036         if (features & NETIF_F_NTUPLE) {
8037                 /* Enable filters and mark for reset */
8038                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8039                         need_reset = true;
8040                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8041         } else {
8042                 /* turn off filters, mark for reset and clear SW filter list */
8043                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8044                         need_reset = true;
8045                         i40e_fdir_filter_exit(pf);
8046                 }
8047                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8048                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8049                 /* reset fd counters */
8050                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8051                 pf->fdir_pf_active_filters = 0;
8052                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8053                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8054                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8055                 /* if ATR was auto disabled it can be re-enabled. */
8056                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8057                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
8058                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8059         }
8060         return need_reset;
8061 }
8062
8063 /**
8064  * i40e_set_features - set the netdev feature flags
8065  * @netdev: ptr to the netdev being adjusted
8066  * @features: the feature set that the stack is suggesting
8067  **/
8068 static int i40e_set_features(struct net_device *netdev,
8069                              netdev_features_t features)
8070 {
8071         struct i40e_netdev_priv *np = netdev_priv(netdev);
8072         struct i40e_vsi *vsi = np->vsi;
8073         struct i40e_pf *pf = vsi->back;
8074         bool need_reset;
8075
8076         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8077                 i40e_vlan_stripping_enable(vsi);
8078         else
8079                 i40e_vlan_stripping_disable(vsi);
8080
8081         need_reset = i40e_set_ntuple(pf, features);
8082
8083         if (need_reset)
8084                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8085
8086         return 0;
8087 }
8088
8089 #ifdef CONFIG_I40E_VXLAN
8090 /**
8091  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
8092  * @pf: board private structure
8093  * @port: The UDP port to look up
8094  *
8095  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8096  **/
8097 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
8098 {
8099         u8 i;
8100
8101         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8102                 if (pf->vxlan_ports[i] == port)
8103                         return i;
8104         }
8105
8106         return i;
8107 }
8108
8109 /**
8110  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
8111  * @netdev: This physical port's netdev
8112  * @sa_family: Socket Family that VXLAN is notifying us about
8113  * @port: New UDP port number that VXLAN started listening to
8114  **/
8115 static void i40e_add_vxlan_port(struct net_device *netdev,
8116                                 sa_family_t sa_family, __be16 port)
8117 {
8118         struct i40e_netdev_priv *np = netdev_priv(netdev);
8119         struct i40e_vsi *vsi = np->vsi;
8120         struct i40e_pf *pf = vsi->back;
8121         u8 next_idx;
8122         u8 idx;
8123
8124         if (sa_family == AF_INET6)
8125                 return;
8126
8127         idx = i40e_get_vxlan_port_idx(pf, port);
8128
8129         /* Check if port already exists */
8130         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8131                 netdev_info(netdev, "vxlan port %d already offloaded\n",
8132                             ntohs(port));
8133                 return;
8134         }
8135
8136         /* Now check if there is space to add the new port */
8137         next_idx = i40e_get_vxlan_port_idx(pf, 0);
8138
8139         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8140                 netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
8141                             ntohs(port));
8142                 return;
8143         }
8144
8145         /* New port: add it and mark its index in the bitmap */
8146         pf->vxlan_ports[next_idx] = port;
8147         pf->pending_vxlan_bitmap |= BIT_ULL(next_idx);
8148         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8149 }
8150
8151 /**
8152  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
8153  * @netdev: This physical port's netdev
8154  * @sa_family: Socket Family that VXLAN is notifying us about
8155  * @port: UDP port number that VXLAN stopped listening to
8156  **/
8157 static void i40e_del_vxlan_port(struct net_device *netdev,
8158                                 sa_family_t sa_family, __be16 port)
8159 {
8160         struct i40e_netdev_priv *np = netdev_priv(netdev);
8161         struct i40e_vsi *vsi = np->vsi;
8162         struct i40e_pf *pf = vsi->back;
8163         u8 idx;
8164
8165         if (sa_family == AF_INET6)
8166                 return;
8167
8168         idx = i40e_get_vxlan_port_idx(pf, port);
8169
8170         /* Check if port already exists */
8171         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8172                 /* if port exists, set it to 0 (mark for deletion)
8173                  * and make it pending
8174                  */
8175                 pf->vxlan_ports[idx] = 0;
8176                 pf->pending_vxlan_bitmap |= BIT_ULL(idx);
8177                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8178         } else {
8179                 netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
8180                             ntohs(port));
8181         }
8182 }
8183
8184 #endif
8185 static int i40e_get_phys_port_id(struct net_device *netdev,
8186                                  struct netdev_phys_item_id *ppid)
8187 {
8188         struct i40e_netdev_priv *np = netdev_priv(netdev);
8189         struct i40e_pf *pf = np->vsi->back;
8190         struct i40e_hw *hw = &pf->hw;
8191
8192         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8193                 return -EOPNOTSUPP;
8194
8195         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8196         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8197
8198         return 0;
8199 }
8200
8201 /**
8202  * i40e_ndo_fdb_add - add an entry to the hardware database
8203  * @ndm: the input from the stack
8204  * @tb: pointer to array of nladdr (unused)
8205  * @dev: the net device pointer
8206  * @addr: the MAC address entry being added
8207  * @flags: instructions from stack about fdb operation
8208  */
8209 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8210                             struct net_device *dev,
8211                             const unsigned char *addr, u16 vid,
8212                             u16 flags)
8213 {
8214         struct i40e_netdev_priv *np = netdev_priv(dev);
8215         struct i40e_pf *pf = np->vsi->back;
8216         int err = 0;
8217
8218         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8219                 return -EOPNOTSUPP;
8220
8221         if (vid) {
8222                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8223                 return -EINVAL;
8224         }
8225
8226         /* Hardware does not support aging addresses so if a
8227          * ndm_state is given only allow permanent addresses
8228          */
8229         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8230                 netdev_info(dev, "FDB only supports static addresses\n");
8231                 return -EINVAL;
8232         }
8233
8234         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8235                 err = dev_uc_add_excl(dev, addr);
8236         else if (is_multicast_ether_addr(addr))
8237                 err = dev_mc_add_excl(dev, addr);
8238         else
8239                 err = -EINVAL;
8240
8241         /* Only return duplicate errors if NLM_F_EXCL is set */
8242         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8243                 err = 0;
8244
8245         return err;
8246 }
8247
8248 /**
8249  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8250  * @dev: the netdev being configured
8251  * @nlh: RTNL message
8252  *
8253  * Inserts a new hardware bridge if not already created and
8254  * enables the bridging mode requested (VEB or VEPA). If the
8255  * hardware bridge has already been inserted and the request
8256  * is to change the mode then that requires a PF reset to
8257  * allow rebuild of the components with required hardware
8258  * bridge mode enabled.
8259  **/
8260 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8261                                    struct nlmsghdr *nlh,
8262                                    u16 flags)
8263 {
8264         struct i40e_netdev_priv *np = netdev_priv(dev);
8265         struct i40e_vsi *vsi = np->vsi;
8266         struct i40e_pf *pf = vsi->back;
8267         struct i40e_veb *veb = NULL;
8268         struct nlattr *attr, *br_spec;
8269         int i, rem;
8270
8271         /* Only for PF VSI for now */
8272         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8273                 return -EOPNOTSUPP;
8274
8275         /* Find the HW bridge for PF VSI */
8276         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8277                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8278                         veb = pf->veb[i];
8279         }
8280
8281         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8282
8283         nla_for_each_nested(attr, br_spec, rem) {
8284                 __u16 mode;
8285
8286                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8287                         continue;
8288
8289                 mode = nla_get_u16(attr);
8290                 if ((mode != BRIDGE_MODE_VEPA) &&
8291                     (mode != BRIDGE_MODE_VEB))
8292                         return -EINVAL;
8293
8294                 /* Insert a new HW bridge */
8295                 if (!veb) {
8296                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8297                                              vsi->tc_config.enabled_tc);
8298                         if (veb) {
8299                                 veb->bridge_mode = mode;
8300                                 i40e_config_bridge_mode(veb);
8301                         } else {
8302                                 /* No Bridge HW offload available */
8303                                 return -ENOENT;
8304                         }
8305                         break;
8306                 } else if (mode != veb->bridge_mode) {
8307                         /* Existing HW bridge but different mode needs reset */
8308                         veb->bridge_mode = mode;
8309                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8310                         if (mode == BRIDGE_MODE_VEB)
8311                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8312                         else
8313                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8314                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8315                         break;
8316                 }
8317         }
8318
8319         return 0;
8320 }
8321
8322 /**
8323  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8324  * @skb: skb buff
8325  * @pid: process id
8326  * @seq: RTNL message seq #
8327  * @dev: the netdev being configured
8328  * @filter_mask: unused
8329  *
8330  * Return the mode in which the hardware bridge is operating in
8331  * i.e VEB or VEPA.
8332  **/
8333 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8334                                    struct net_device *dev,
8335                                    u32 filter_mask, int nlflags)
8336 {
8337         struct i40e_netdev_priv *np = netdev_priv(dev);
8338         struct i40e_vsi *vsi = np->vsi;
8339         struct i40e_pf *pf = vsi->back;
8340         struct i40e_veb *veb = NULL;
8341         int i;
8342
8343         /* Only for PF VSI for now */
8344         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8345                 return -EOPNOTSUPP;
8346
8347         /* Find the HW bridge for the PF VSI */
8348         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8349                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8350                         veb = pf->veb[i];
8351         }
8352
8353         if (!veb)
8354                 return 0;
8355
8356         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8357                                        nlflags, 0, 0, filter_mask, NULL);
8358 }
8359
8360 #define I40E_MAX_TUNNEL_HDR_LEN 80
8361 /**
8362  * i40e_features_check - Validate encapsulated packet conforms to limits
8363  * @skb: skb buff
8364  * @netdev: This physical port's netdev
8365  * @features: Offload features that the stack believes apply
8366  **/
8367 static netdev_features_t i40e_features_check(struct sk_buff *skb,
8368                                              struct net_device *dev,
8369                                              netdev_features_t features)
8370 {
8371         if (skb->encapsulation &&
8372             (skb_inner_mac_header(skb) - skb_transport_header(skb) >
8373              I40E_MAX_TUNNEL_HDR_LEN))
8374                 return features & ~(NETIF_F_ALL_CSUM | NETIF_F_GSO_MASK);
8375
8376         return features;
8377 }
8378
8379 static const struct net_device_ops i40e_netdev_ops = {
8380         .ndo_open               = i40e_open,
8381         .ndo_stop               = i40e_close,
8382         .ndo_start_xmit         = i40e_lan_xmit_frame,
8383         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
8384         .ndo_set_rx_mode        = i40e_set_rx_mode,
8385         .ndo_validate_addr      = eth_validate_addr,
8386         .ndo_set_mac_address    = i40e_set_mac,
8387         .ndo_change_mtu         = i40e_change_mtu,
8388         .ndo_do_ioctl           = i40e_ioctl,
8389         .ndo_tx_timeout         = i40e_tx_timeout,
8390         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
8391         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
8392 #ifdef CONFIG_NET_POLL_CONTROLLER
8393         .ndo_poll_controller    = i40e_netpoll,
8394 #endif
8395         .ndo_setup_tc           = i40e_setup_tc,
8396 #ifdef I40E_FCOE
8397         .ndo_fcoe_enable        = i40e_fcoe_enable,
8398         .ndo_fcoe_disable       = i40e_fcoe_disable,
8399 #endif
8400         .ndo_set_features       = i40e_set_features,
8401         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
8402         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
8403         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
8404         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
8405         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
8406         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
8407 #ifdef CONFIG_I40E_VXLAN
8408         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
8409         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
8410 #endif
8411         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
8412         .ndo_fdb_add            = i40e_ndo_fdb_add,
8413         .ndo_features_check     = i40e_features_check,
8414         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
8415         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
8416 };
8417
8418 /**
8419  * i40e_config_netdev - Setup the netdev flags
8420  * @vsi: the VSI being configured
8421  *
8422  * Returns 0 on success, negative value on failure
8423  **/
8424 static int i40e_config_netdev(struct i40e_vsi *vsi)
8425 {
8426         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
8427         struct i40e_pf *pf = vsi->back;
8428         struct i40e_hw *hw = &pf->hw;
8429         struct i40e_netdev_priv *np;
8430         struct net_device *netdev;
8431         u8 mac_addr[ETH_ALEN];
8432         int etherdev_size;
8433
8434         etherdev_size = sizeof(struct i40e_netdev_priv);
8435         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
8436         if (!netdev)
8437                 return -ENOMEM;
8438
8439         vsi->netdev = netdev;
8440         np = netdev_priv(netdev);
8441         np->vsi = vsi;
8442
8443         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
8444                                   NETIF_F_GSO_UDP_TUNNEL |
8445                                   NETIF_F_TSO;
8446
8447         netdev->features = NETIF_F_SG                  |
8448                            NETIF_F_IP_CSUM             |
8449                            NETIF_F_SCTP_CSUM           |
8450                            NETIF_F_HIGHDMA             |
8451                            NETIF_F_GSO_UDP_TUNNEL      |
8452                            NETIF_F_HW_VLAN_CTAG_TX     |
8453                            NETIF_F_HW_VLAN_CTAG_RX     |
8454                            NETIF_F_HW_VLAN_CTAG_FILTER |
8455                            NETIF_F_IPV6_CSUM           |
8456                            NETIF_F_TSO                 |
8457                            NETIF_F_TSO_ECN             |
8458                            NETIF_F_TSO6                |
8459                            NETIF_F_RXCSUM              |
8460                            NETIF_F_RXHASH              |
8461                            0;
8462
8463         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
8464                 netdev->features |= NETIF_F_NTUPLE;
8465
8466         /* copy netdev features into list of user selectable features */
8467         netdev->hw_features |= netdev->features;
8468
8469         if (vsi->type == I40E_VSI_MAIN) {
8470                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
8471                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
8472                 /* The following steps are necessary to prevent reception
8473                  * of tagged packets - some older NVM configurations load a
8474                  * default a MAC-VLAN filter that accepts any tagged packet
8475                  * which must be replaced by a normal filter.
8476                  */
8477                 if (!i40e_rm_default_mac_filter(vsi, mac_addr))
8478                         i40e_add_filter(vsi, mac_addr,
8479                                         I40E_VLAN_ANY, false, true);
8480         } else {
8481                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
8482                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
8483                          pf->vsi[pf->lan_vsi]->netdev->name);
8484                 random_ether_addr(mac_addr);
8485                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
8486         }
8487         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
8488
8489         ether_addr_copy(netdev->dev_addr, mac_addr);
8490         ether_addr_copy(netdev->perm_addr, mac_addr);
8491         /* vlan gets same features (except vlan offload)
8492          * after any tweaks for specific VSI types
8493          */
8494         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
8495                                                      NETIF_F_HW_VLAN_CTAG_RX |
8496                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
8497         netdev->priv_flags |= IFF_UNICAST_FLT;
8498         netdev->priv_flags |= IFF_SUPP_NOFCS;
8499         /* Setup netdev TC information */
8500         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
8501
8502         netdev->netdev_ops = &i40e_netdev_ops;
8503         netdev->watchdog_timeo = 5 * HZ;
8504         i40e_set_ethtool_ops(netdev);
8505 #ifdef I40E_FCOE
8506         i40e_fcoe_config_netdev(netdev, vsi);
8507 #endif
8508
8509         return 0;
8510 }
8511
8512 /**
8513  * i40e_vsi_delete - Delete a VSI from the switch
8514  * @vsi: the VSI being removed
8515  *
8516  * Returns 0 on success, negative value on failure
8517  **/
8518 static void i40e_vsi_delete(struct i40e_vsi *vsi)
8519 {
8520         /* remove default VSI is not allowed */
8521         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
8522                 return;
8523
8524         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
8525 }
8526
8527 /**
8528  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
8529  * @vsi: the VSI being queried
8530  *
8531  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
8532  **/
8533 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
8534 {
8535         struct i40e_veb *veb;
8536         struct i40e_pf *pf = vsi->back;
8537
8538         /* Uplink is not a bridge so default to VEB */
8539         if (vsi->veb_idx == I40E_NO_VEB)
8540                 return 1;
8541
8542         veb = pf->veb[vsi->veb_idx];
8543         /* Uplink is a bridge in VEPA mode */
8544         if (veb && (veb->bridge_mode & BRIDGE_MODE_VEPA))
8545                 return 0;
8546
8547         /* Uplink is a bridge in VEB mode */
8548         return 1;
8549 }
8550
8551 /**
8552  * i40e_add_vsi - Add a VSI to the switch
8553  * @vsi: the VSI being configured
8554  *
8555  * This initializes a VSI context depending on the VSI type to be added and
8556  * passes it down to the add_vsi aq command.
8557  **/
8558 static int i40e_add_vsi(struct i40e_vsi *vsi)
8559 {
8560         int ret = -ENODEV;
8561         struct i40e_mac_filter *f, *ftmp;
8562         struct i40e_pf *pf = vsi->back;
8563         struct i40e_hw *hw = &pf->hw;
8564         struct i40e_vsi_context ctxt;
8565         u8 enabled_tc = 0x1; /* TC0 enabled */
8566         int f_count = 0;
8567
8568         memset(&ctxt, 0, sizeof(ctxt));
8569         switch (vsi->type) {
8570         case I40E_VSI_MAIN:
8571                 /* The PF's main VSI is already setup as part of the
8572                  * device initialization, so we'll not bother with
8573                  * the add_vsi call, but we will retrieve the current
8574                  * VSI context.
8575                  */
8576                 ctxt.seid = pf->main_vsi_seid;
8577                 ctxt.pf_num = pf->hw.pf_id;
8578                 ctxt.vf_num = 0;
8579                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
8580                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8581                 if (ret) {
8582                         dev_info(&pf->pdev->dev,
8583                                  "couldn't get PF vsi config, err %s aq_err %s\n",
8584                                  i40e_stat_str(&pf->hw, ret),
8585                                  i40e_aq_str(&pf->hw,
8586                                              pf->hw.aq.asq_last_status));
8587                         return -ENOENT;
8588                 }
8589                 vsi->info = ctxt.info;
8590                 vsi->info.valid_sections = 0;
8591
8592                 vsi->seid = ctxt.seid;
8593                 vsi->id = ctxt.vsi_number;
8594
8595                 enabled_tc = i40e_pf_get_tc_map(pf);
8596
8597                 /* MFP mode setup queue map and update VSI */
8598                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
8599                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
8600                         memset(&ctxt, 0, sizeof(ctxt));
8601                         ctxt.seid = pf->main_vsi_seid;
8602                         ctxt.pf_num = pf->hw.pf_id;
8603                         ctxt.vf_num = 0;
8604                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
8605                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
8606                         if (ret) {
8607                                 dev_info(&pf->pdev->dev,
8608                                          "update vsi failed, err %s aq_err %s\n",
8609                                          i40e_stat_str(&pf->hw, ret),
8610                                          i40e_aq_str(&pf->hw,
8611                                                     pf->hw.aq.asq_last_status));
8612                                 ret = -ENOENT;
8613                                 goto err;
8614                         }
8615                         /* update the local VSI info queue map */
8616                         i40e_vsi_update_queue_map(vsi, &ctxt);
8617                         vsi->info.valid_sections = 0;
8618                 } else {
8619                         /* Default/Main VSI is only enabled for TC0
8620                          * reconfigure it to enable all TCs that are
8621                          * available on the port in SFP mode.
8622                          * For MFP case the iSCSI PF would use this
8623                          * flow to enable LAN+iSCSI TC.
8624                          */
8625                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
8626                         if (ret) {
8627                                 dev_info(&pf->pdev->dev,
8628                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
8629                                          enabled_tc,
8630                                          i40e_stat_str(&pf->hw, ret),
8631                                          i40e_aq_str(&pf->hw,
8632                                                     pf->hw.aq.asq_last_status));
8633                                 ret = -ENOENT;
8634                         }
8635                 }
8636                 break;
8637
8638         case I40E_VSI_FDIR:
8639                 ctxt.pf_num = hw->pf_id;
8640                 ctxt.vf_num = 0;
8641                 ctxt.uplink_seid = vsi->uplink_seid;
8642                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8643                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8644                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
8645                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
8646                         ctxt.info.valid_sections |=
8647                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8648                         ctxt.info.switch_id =
8649                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8650                 }
8651                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8652                 break;
8653
8654         case I40E_VSI_VMDQ2:
8655                 ctxt.pf_num = hw->pf_id;
8656                 ctxt.vf_num = 0;
8657                 ctxt.uplink_seid = vsi->uplink_seid;
8658                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8659                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
8660
8661                 /* This VSI is connected to VEB so the switch_id
8662                  * should be set to zero by default.
8663                  */
8664                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8665                         ctxt.info.valid_sections |=
8666                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8667                         ctxt.info.switch_id =
8668                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8669                 }
8670
8671                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8672                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8673                 break;
8674
8675         case I40E_VSI_SRIOV:
8676                 ctxt.pf_num = hw->pf_id;
8677                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
8678                 ctxt.uplink_seid = vsi->uplink_seid;
8679                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8680                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
8681
8682                 /* This VSI is connected to VEB so the switch_id
8683                  * should be set to zero by default.
8684                  */
8685                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8686                         ctxt.info.valid_sections |=
8687                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8688                         ctxt.info.switch_id =
8689                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8690                 }
8691
8692                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
8693                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
8694                 if (pf->vf[vsi->vf_id].spoofchk) {
8695                         ctxt.info.valid_sections |=
8696                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
8697                         ctxt.info.sec_flags |=
8698                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
8699                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
8700                 }
8701                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8702                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8703                 break;
8704
8705 #ifdef I40E_FCOE
8706         case I40E_VSI_FCOE:
8707                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
8708                 if (ret) {
8709                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
8710                         return ret;
8711                 }
8712                 break;
8713
8714 #endif /* I40E_FCOE */
8715         default:
8716                 return -ENODEV;
8717         }
8718
8719         if (vsi->type != I40E_VSI_MAIN) {
8720                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
8721                 if (ret) {
8722                         dev_info(&vsi->back->pdev->dev,
8723                                  "add vsi failed, err %s aq_err %s\n",
8724                                  i40e_stat_str(&pf->hw, ret),
8725                                  i40e_aq_str(&pf->hw,
8726                                              pf->hw.aq.asq_last_status));
8727                         ret = -ENOENT;
8728                         goto err;
8729                 }
8730                 vsi->info = ctxt.info;
8731                 vsi->info.valid_sections = 0;
8732                 vsi->seid = ctxt.seid;
8733                 vsi->id = ctxt.vsi_number;
8734         }
8735
8736         /* If macvlan filters already exist, force them to get loaded */
8737         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
8738                 f->changed = true;
8739                 f_count++;
8740
8741                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
8742                         struct i40e_aqc_remove_macvlan_element_data element;
8743
8744                         memset(&element, 0, sizeof(element));
8745                         ether_addr_copy(element.mac_addr, f->macaddr);
8746                         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
8747                         ret = i40e_aq_remove_macvlan(hw, vsi->seid,
8748                                                      &element, 1, NULL);
8749                         if (ret) {
8750                                 /* some older FW has a different default */
8751                                 element.flags |=
8752                                                I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
8753                                 i40e_aq_remove_macvlan(hw, vsi->seid,
8754                                                        &element, 1, NULL);
8755                         }
8756
8757                         i40e_aq_mac_address_write(hw,
8758                                                   I40E_AQC_WRITE_TYPE_LAA_WOL,
8759                                                   f->macaddr, NULL);
8760                 }
8761         }
8762         if (f_count) {
8763                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
8764                 pf->flags |= I40E_FLAG_FILTER_SYNC;
8765         }
8766
8767         /* Update VSI BW information */
8768         ret = i40e_vsi_get_bw_info(vsi);
8769         if (ret) {
8770                 dev_info(&pf->pdev->dev,
8771                          "couldn't get vsi bw info, err %s aq_err %s\n",
8772                          i40e_stat_str(&pf->hw, ret),
8773                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
8774                 /* VSI is already added so not tearing that up */
8775                 ret = 0;
8776         }
8777
8778 err:
8779         return ret;
8780 }
8781
8782 /**
8783  * i40e_vsi_release - Delete a VSI and free its resources
8784  * @vsi: the VSI being removed
8785  *
8786  * Returns 0 on success or < 0 on error
8787  **/
8788 int i40e_vsi_release(struct i40e_vsi *vsi)
8789 {
8790         struct i40e_mac_filter *f, *ftmp;
8791         struct i40e_veb *veb = NULL;
8792         struct i40e_pf *pf;
8793         u16 uplink_seid;
8794         int i, n;
8795
8796         pf = vsi->back;
8797
8798         /* release of a VEB-owner or last VSI is not allowed */
8799         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
8800                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
8801                          vsi->seid, vsi->uplink_seid);
8802                 return -ENODEV;
8803         }
8804         if (vsi == pf->vsi[pf->lan_vsi] &&
8805             !test_bit(__I40E_DOWN, &pf->state)) {
8806                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
8807                 return -ENODEV;
8808         }
8809
8810         uplink_seid = vsi->uplink_seid;
8811         if (vsi->type != I40E_VSI_SRIOV) {
8812                 if (vsi->netdev_registered) {
8813                         vsi->netdev_registered = false;
8814                         if (vsi->netdev) {
8815                                 /* results in a call to i40e_close() */
8816                                 unregister_netdev(vsi->netdev);
8817                         }
8818                 } else {
8819                         i40e_vsi_close(vsi);
8820                 }
8821                 i40e_vsi_disable_irq(vsi);
8822         }
8823
8824         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
8825                 i40e_del_filter(vsi, f->macaddr, f->vlan,
8826                                 f->is_vf, f->is_netdev);
8827         i40e_sync_vsi_filters(vsi, false);
8828
8829         i40e_vsi_delete(vsi);
8830         i40e_vsi_free_q_vectors(vsi);
8831         if (vsi->netdev) {
8832                 free_netdev(vsi->netdev);
8833                 vsi->netdev = NULL;
8834         }
8835         i40e_vsi_clear_rings(vsi);
8836         i40e_vsi_clear(vsi);
8837
8838         /* If this was the last thing on the VEB, except for the
8839          * controlling VSI, remove the VEB, which puts the controlling
8840          * VSI onto the next level down in the switch.
8841          *
8842          * Well, okay, there's one more exception here: don't remove
8843          * the orphan VEBs yet.  We'll wait for an explicit remove request
8844          * from up the network stack.
8845          */
8846         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
8847                 if (pf->vsi[i] &&
8848                     pf->vsi[i]->uplink_seid == uplink_seid &&
8849                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8850                         n++;      /* count the VSIs */
8851                 }
8852         }
8853         for (i = 0; i < I40E_MAX_VEB; i++) {
8854                 if (!pf->veb[i])
8855                         continue;
8856                 if (pf->veb[i]->uplink_seid == uplink_seid)
8857                         n++;     /* count the VEBs */
8858                 if (pf->veb[i]->seid == uplink_seid)
8859                         veb = pf->veb[i];
8860         }
8861         if (n == 0 && veb && veb->uplink_seid != 0)
8862                 i40e_veb_release(veb);
8863
8864         return 0;
8865 }
8866
8867 /**
8868  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
8869  * @vsi: ptr to the VSI
8870  *
8871  * This should only be called after i40e_vsi_mem_alloc() which allocates the
8872  * corresponding SW VSI structure and initializes num_queue_pairs for the
8873  * newly allocated VSI.
8874  *
8875  * Returns 0 on success or negative on failure
8876  **/
8877 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
8878 {
8879         int ret = -ENOENT;
8880         struct i40e_pf *pf = vsi->back;
8881
8882         if (vsi->q_vectors[0]) {
8883                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
8884                          vsi->seid);
8885                 return -EEXIST;
8886         }
8887
8888         if (vsi->base_vector) {
8889                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
8890                          vsi->seid, vsi->base_vector);
8891                 return -EEXIST;
8892         }
8893
8894         ret = i40e_vsi_alloc_q_vectors(vsi);
8895         if (ret) {
8896                 dev_info(&pf->pdev->dev,
8897                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
8898                          vsi->num_q_vectors, vsi->seid, ret);
8899                 vsi->num_q_vectors = 0;
8900                 goto vector_setup_out;
8901         }
8902
8903         /* In Legacy mode, we do not have to get any other vector since we
8904          * piggyback on the misc/ICR0 for queue interrupts.
8905         */
8906         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
8907                 return ret;
8908         if (vsi->num_q_vectors)
8909                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
8910                                                  vsi->num_q_vectors, vsi->idx);
8911         if (vsi->base_vector < 0) {
8912                 dev_info(&pf->pdev->dev,
8913                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
8914                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
8915                 i40e_vsi_free_q_vectors(vsi);
8916                 ret = -ENOENT;
8917                 goto vector_setup_out;
8918         }
8919
8920 vector_setup_out:
8921         return ret;
8922 }
8923
8924 /**
8925  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
8926  * @vsi: pointer to the vsi.
8927  *
8928  * This re-allocates a vsi's queue resources.
8929  *
8930  * Returns pointer to the successfully allocated and configured VSI sw struct
8931  * on success, otherwise returns NULL on failure.
8932  **/
8933 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
8934 {
8935         struct i40e_pf *pf = vsi->back;
8936         u8 enabled_tc;
8937         int ret;
8938
8939         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
8940         i40e_vsi_clear_rings(vsi);
8941
8942         i40e_vsi_free_arrays(vsi, false);
8943         i40e_set_num_rings_in_vsi(vsi);
8944         ret = i40e_vsi_alloc_arrays(vsi, false);
8945         if (ret)
8946                 goto err_vsi;
8947
8948         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
8949         if (ret < 0) {
8950                 dev_info(&pf->pdev->dev,
8951                          "failed to get tracking for %d queues for VSI %d err %d\n",
8952                          vsi->alloc_queue_pairs, vsi->seid, ret);
8953                 goto err_vsi;
8954         }
8955         vsi->base_queue = ret;
8956
8957         /* Update the FW view of the VSI. Force a reset of TC and queue
8958          * layout configurations.
8959          */
8960         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8961         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8962         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8963         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8964
8965         /* assign it some queues */
8966         ret = i40e_alloc_rings(vsi);
8967         if (ret)
8968                 goto err_rings;
8969
8970         /* map all of the rings to the q_vectors */
8971         i40e_vsi_map_rings_to_vectors(vsi);
8972         return vsi;
8973
8974 err_rings:
8975         i40e_vsi_free_q_vectors(vsi);
8976         if (vsi->netdev_registered) {
8977                 vsi->netdev_registered = false;
8978                 unregister_netdev(vsi->netdev);
8979                 free_netdev(vsi->netdev);
8980                 vsi->netdev = NULL;
8981         }
8982         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8983 err_vsi:
8984         i40e_vsi_clear(vsi);
8985         return NULL;
8986 }
8987
8988 /**
8989  * i40e_vsi_setup - Set up a VSI by a given type
8990  * @pf: board private structure
8991  * @type: VSI type
8992  * @uplink_seid: the switch element to link to
8993  * @param1: usage depends upon VSI type. For VF types, indicates VF id
8994  *
8995  * This allocates the sw VSI structure and its queue resources, then add a VSI
8996  * to the identified VEB.
8997  *
8998  * Returns pointer to the successfully allocated and configure VSI sw struct on
8999  * success, otherwise returns NULL on failure.
9000  **/
9001 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9002                                 u16 uplink_seid, u32 param1)
9003 {
9004         struct i40e_vsi *vsi = NULL;
9005         struct i40e_veb *veb = NULL;
9006         int ret, i;
9007         int v_idx;
9008
9009         /* The requested uplink_seid must be either
9010          *     - the PF's port seid
9011          *              no VEB is needed because this is the PF
9012          *              or this is a Flow Director special case VSI
9013          *     - seid of an existing VEB
9014          *     - seid of a VSI that owns an existing VEB
9015          *     - seid of a VSI that doesn't own a VEB
9016          *              a new VEB is created and the VSI becomes the owner
9017          *     - seid of the PF VSI, which is what creates the first VEB
9018          *              this is a special case of the previous
9019          *
9020          * Find which uplink_seid we were given and create a new VEB if needed
9021          */
9022         for (i = 0; i < I40E_MAX_VEB; i++) {
9023                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9024                         veb = pf->veb[i];
9025                         break;
9026                 }
9027         }
9028
9029         if (!veb && uplink_seid != pf->mac_seid) {
9030
9031                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9032                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9033                                 vsi = pf->vsi[i];
9034                                 break;
9035                         }
9036                 }
9037                 if (!vsi) {
9038                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9039                                  uplink_seid);
9040                         return NULL;
9041                 }
9042
9043                 if (vsi->uplink_seid == pf->mac_seid)
9044                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9045                                              vsi->tc_config.enabled_tc);
9046                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9047                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9048                                              vsi->tc_config.enabled_tc);
9049                 if (veb) {
9050                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9051                                 dev_info(&vsi->back->pdev->dev,
9052                                          "%s: New VSI creation error, uplink seid of LAN VSI expected.\n",
9053                                          __func__);
9054                                 return NULL;
9055                         }
9056                         /* We come up by default in VEPA mode if SRIOV is not
9057                          * already enabled, in which case we can't force VEPA
9058                          * mode.
9059                          */
9060                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9061                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9062                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9063                         }
9064                         i40e_config_bridge_mode(veb);
9065                 }
9066                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9067                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9068                                 veb = pf->veb[i];
9069                 }
9070                 if (!veb) {
9071                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9072                         return NULL;
9073                 }
9074
9075                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9076                 uplink_seid = veb->seid;
9077         }
9078
9079         /* get vsi sw struct */
9080         v_idx = i40e_vsi_mem_alloc(pf, type);
9081         if (v_idx < 0)
9082                 goto err_alloc;
9083         vsi = pf->vsi[v_idx];
9084         if (!vsi)
9085                 goto err_alloc;
9086         vsi->type = type;
9087         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9088
9089         if (type == I40E_VSI_MAIN)
9090                 pf->lan_vsi = v_idx;
9091         else if (type == I40E_VSI_SRIOV)
9092                 vsi->vf_id = param1;
9093         /* assign it some queues */
9094         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9095                                 vsi->idx);
9096         if (ret < 0) {
9097                 dev_info(&pf->pdev->dev,
9098                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9099                          vsi->alloc_queue_pairs, vsi->seid, ret);
9100                 goto err_vsi;
9101         }
9102         vsi->base_queue = ret;
9103
9104         /* get a VSI from the hardware */
9105         vsi->uplink_seid = uplink_seid;
9106         ret = i40e_add_vsi(vsi);
9107         if (ret)
9108                 goto err_vsi;
9109
9110         switch (vsi->type) {
9111         /* setup the netdev if needed */
9112         case I40E_VSI_MAIN:
9113         case I40E_VSI_VMDQ2:
9114         case I40E_VSI_FCOE:
9115                 ret = i40e_config_netdev(vsi);
9116                 if (ret)
9117                         goto err_netdev;
9118                 ret = register_netdev(vsi->netdev);
9119                 if (ret)
9120                         goto err_netdev;
9121                 vsi->netdev_registered = true;
9122                 netif_carrier_off(vsi->netdev);
9123 #ifdef CONFIG_I40E_DCB
9124                 /* Setup DCB netlink interface */
9125                 i40e_dcbnl_setup(vsi);
9126 #endif /* CONFIG_I40E_DCB */
9127                 /* fall through */
9128
9129         case I40E_VSI_FDIR:
9130                 /* set up vectors and rings if needed */
9131                 ret = i40e_vsi_setup_vectors(vsi);
9132                 if (ret)
9133                         goto err_msix;
9134
9135                 ret = i40e_alloc_rings(vsi);
9136                 if (ret)
9137                         goto err_rings;
9138
9139                 /* map all of the rings to the q_vectors */
9140                 i40e_vsi_map_rings_to_vectors(vsi);
9141
9142                 i40e_vsi_reset_stats(vsi);
9143                 break;
9144
9145         default:
9146                 /* no netdev or rings for the other VSI types */
9147                 break;
9148         }
9149
9150         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9151             (vsi->type == I40E_VSI_VMDQ2)) {
9152                 ret = i40e_vsi_config_rss(vsi);
9153         }
9154         return vsi;
9155
9156 err_rings:
9157         i40e_vsi_free_q_vectors(vsi);
9158 err_msix:
9159         if (vsi->netdev_registered) {
9160                 vsi->netdev_registered = false;
9161                 unregister_netdev(vsi->netdev);
9162                 free_netdev(vsi->netdev);
9163                 vsi->netdev = NULL;
9164         }
9165 err_netdev:
9166         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9167 err_vsi:
9168         i40e_vsi_clear(vsi);
9169 err_alloc:
9170         return NULL;
9171 }
9172
9173 /**
9174  * i40e_veb_get_bw_info - Query VEB BW information
9175  * @veb: the veb to query
9176  *
9177  * Query the Tx scheduler BW configuration data for given VEB
9178  **/
9179 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9180 {
9181         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9182         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9183         struct i40e_pf *pf = veb->pf;
9184         struct i40e_hw *hw = &pf->hw;
9185         u32 tc_bw_max;
9186         int ret = 0;
9187         int i;
9188
9189         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9190                                                   &bw_data, NULL);
9191         if (ret) {
9192                 dev_info(&pf->pdev->dev,
9193                          "query veb bw config failed, err %s aq_err %s\n",
9194                          i40e_stat_str(&pf->hw, ret),
9195                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9196                 goto out;
9197         }
9198
9199         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9200                                                    &ets_data, NULL);
9201         if (ret) {
9202                 dev_info(&pf->pdev->dev,
9203                          "query veb bw ets config failed, err %s aq_err %s\n",
9204                          i40e_stat_str(&pf->hw, ret),
9205                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9206                 goto out;
9207         }
9208
9209         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9210         veb->bw_max_quanta = ets_data.tc_bw_max;
9211         veb->is_abs_credits = bw_data.absolute_credits_enable;
9212         veb->enabled_tc = ets_data.tc_valid_bits;
9213         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9214                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9215         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9216                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9217                 veb->bw_tc_limit_credits[i] =
9218                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9219                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9220         }
9221
9222 out:
9223         return ret;
9224 }
9225
9226 /**
9227  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9228  * @pf: board private structure
9229  *
9230  * On error: returns error code (negative)
9231  * On success: returns vsi index in PF (positive)
9232  **/
9233 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9234 {
9235         int ret = -ENOENT;
9236         struct i40e_veb *veb;
9237         int i;
9238
9239         /* Need to protect the allocation of switch elements at the PF level */
9240         mutex_lock(&pf->switch_mutex);
9241
9242         /* VEB list may be fragmented if VEB creation/destruction has
9243          * been happening.  We can afford to do a quick scan to look
9244          * for any free slots in the list.
9245          *
9246          * find next empty veb slot, looping back around if necessary
9247          */
9248         i = 0;
9249         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9250                 i++;
9251         if (i >= I40E_MAX_VEB) {
9252                 ret = -ENOMEM;
9253                 goto err_alloc_veb;  /* out of VEB slots! */
9254         }
9255
9256         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9257         if (!veb) {
9258                 ret = -ENOMEM;
9259                 goto err_alloc_veb;
9260         }
9261         veb->pf = pf;
9262         veb->idx = i;
9263         veb->enabled_tc = 1;
9264
9265         pf->veb[i] = veb;
9266         ret = i;
9267 err_alloc_veb:
9268         mutex_unlock(&pf->switch_mutex);
9269         return ret;
9270 }
9271
9272 /**
9273  * i40e_switch_branch_release - Delete a branch of the switch tree
9274  * @branch: where to start deleting
9275  *
9276  * This uses recursion to find the tips of the branch to be
9277  * removed, deleting until we get back to and can delete this VEB.
9278  **/
9279 static void i40e_switch_branch_release(struct i40e_veb *branch)
9280 {
9281         struct i40e_pf *pf = branch->pf;
9282         u16 branch_seid = branch->seid;
9283         u16 veb_idx = branch->idx;
9284         int i;
9285
9286         /* release any VEBs on this VEB - RECURSION */
9287         for (i = 0; i < I40E_MAX_VEB; i++) {
9288                 if (!pf->veb[i])
9289                         continue;
9290                 if (pf->veb[i]->uplink_seid == branch->seid)
9291                         i40e_switch_branch_release(pf->veb[i]);
9292         }
9293
9294         /* Release the VSIs on this VEB, but not the owner VSI.
9295          *
9296          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
9297          *       the VEB itself, so don't use (*branch) after this loop.
9298          */
9299         for (i = 0; i < pf->num_alloc_vsi; i++) {
9300                 if (!pf->vsi[i])
9301                         continue;
9302                 if (pf->vsi[i]->uplink_seid == branch_seid &&
9303                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9304                         i40e_vsi_release(pf->vsi[i]);
9305                 }
9306         }
9307
9308         /* There's one corner case where the VEB might not have been
9309          * removed, so double check it here and remove it if needed.
9310          * This case happens if the veb was created from the debugfs
9311          * commands and no VSIs were added to it.
9312          */
9313         if (pf->veb[veb_idx])
9314                 i40e_veb_release(pf->veb[veb_idx]);
9315 }
9316
9317 /**
9318  * i40e_veb_clear - remove veb struct
9319  * @veb: the veb to remove
9320  **/
9321 static void i40e_veb_clear(struct i40e_veb *veb)
9322 {
9323         if (!veb)
9324                 return;
9325
9326         if (veb->pf) {
9327                 struct i40e_pf *pf = veb->pf;
9328
9329                 mutex_lock(&pf->switch_mutex);
9330                 if (pf->veb[veb->idx] == veb)
9331                         pf->veb[veb->idx] = NULL;
9332                 mutex_unlock(&pf->switch_mutex);
9333         }
9334
9335         kfree(veb);
9336 }
9337
9338 /**
9339  * i40e_veb_release - Delete a VEB and free its resources
9340  * @veb: the VEB being removed
9341  **/
9342 void i40e_veb_release(struct i40e_veb *veb)
9343 {
9344         struct i40e_vsi *vsi = NULL;
9345         struct i40e_pf *pf;
9346         int i, n = 0;
9347
9348         pf = veb->pf;
9349
9350         /* find the remaining VSI and check for extras */
9351         for (i = 0; i < pf->num_alloc_vsi; i++) {
9352                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
9353                         n++;
9354                         vsi = pf->vsi[i];
9355                 }
9356         }
9357         if (n != 1) {
9358                 dev_info(&pf->pdev->dev,
9359                          "can't remove VEB %d with %d VSIs left\n",
9360                          veb->seid, n);
9361                 return;
9362         }
9363
9364         /* move the remaining VSI to uplink veb */
9365         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
9366         if (veb->uplink_seid) {
9367                 vsi->uplink_seid = veb->uplink_seid;
9368                 if (veb->uplink_seid == pf->mac_seid)
9369                         vsi->veb_idx = I40E_NO_VEB;
9370                 else
9371                         vsi->veb_idx = veb->veb_idx;
9372         } else {
9373                 /* floating VEB */
9374                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
9375                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
9376         }
9377
9378         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9379         i40e_veb_clear(veb);
9380 }
9381
9382 /**
9383  * i40e_add_veb - create the VEB in the switch
9384  * @veb: the VEB to be instantiated
9385  * @vsi: the controlling VSI
9386  **/
9387 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
9388 {
9389         struct i40e_pf *pf = veb->pf;
9390         bool is_default = veb->pf->cur_promisc;
9391         bool is_cloud = false;
9392         int ret;
9393
9394         /* get a VEB from the hardware */
9395         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
9396                               veb->enabled_tc, is_default,
9397                               is_cloud, &veb->seid, NULL);
9398         if (ret) {
9399                 dev_info(&pf->pdev->dev,
9400                          "couldn't add VEB, err %s aq_err %s\n",
9401                          i40e_stat_str(&pf->hw, ret),
9402                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9403                 return -EPERM;
9404         }
9405
9406         /* get statistics counter */
9407         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
9408                                          &veb->stats_idx, NULL, NULL, NULL);
9409         if (ret) {
9410                 dev_info(&pf->pdev->dev,
9411                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
9412                          i40e_stat_str(&pf->hw, ret),
9413                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9414                 return -EPERM;
9415         }
9416         ret = i40e_veb_get_bw_info(veb);
9417         if (ret) {
9418                 dev_info(&pf->pdev->dev,
9419                          "couldn't get VEB bw info, err %s aq_err %s\n",
9420                          i40e_stat_str(&pf->hw, ret),
9421                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9422                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9423                 return -ENOENT;
9424         }
9425
9426         vsi->uplink_seid = veb->seid;
9427         vsi->veb_idx = veb->idx;
9428         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9429
9430         return 0;
9431 }
9432
9433 /**
9434  * i40e_veb_setup - Set up a VEB
9435  * @pf: board private structure
9436  * @flags: VEB setup flags
9437  * @uplink_seid: the switch element to link to
9438  * @vsi_seid: the initial VSI seid
9439  * @enabled_tc: Enabled TC bit-map
9440  *
9441  * This allocates the sw VEB structure and links it into the switch
9442  * It is possible and legal for this to be a duplicate of an already
9443  * existing VEB.  It is also possible for both uplink and vsi seids
9444  * to be zero, in order to create a floating VEB.
9445  *
9446  * Returns pointer to the successfully allocated VEB sw struct on
9447  * success, otherwise returns NULL on failure.
9448  **/
9449 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
9450                                 u16 uplink_seid, u16 vsi_seid,
9451                                 u8 enabled_tc)
9452 {
9453         struct i40e_veb *veb, *uplink_veb = NULL;
9454         int vsi_idx, veb_idx;
9455         int ret;
9456
9457         /* if one seid is 0, the other must be 0 to create a floating relay */
9458         if ((uplink_seid == 0 || vsi_seid == 0) &&
9459             (uplink_seid + vsi_seid != 0)) {
9460                 dev_info(&pf->pdev->dev,
9461                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
9462                          uplink_seid, vsi_seid);
9463                 return NULL;
9464         }
9465
9466         /* make sure there is such a vsi and uplink */
9467         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
9468                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
9469                         break;
9470         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
9471                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
9472                          vsi_seid);
9473                 return NULL;
9474         }
9475
9476         if (uplink_seid && uplink_seid != pf->mac_seid) {
9477                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
9478                         if (pf->veb[veb_idx] &&
9479                             pf->veb[veb_idx]->seid == uplink_seid) {
9480                                 uplink_veb = pf->veb[veb_idx];
9481                                 break;
9482                         }
9483                 }
9484                 if (!uplink_veb) {
9485                         dev_info(&pf->pdev->dev,
9486                                  "uplink seid %d not found\n", uplink_seid);
9487                         return NULL;
9488                 }
9489         }
9490
9491         /* get veb sw struct */
9492         veb_idx = i40e_veb_mem_alloc(pf);
9493         if (veb_idx < 0)
9494                 goto err_alloc;
9495         veb = pf->veb[veb_idx];
9496         veb->flags = flags;
9497         veb->uplink_seid = uplink_seid;
9498         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
9499         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
9500
9501         /* create the VEB in the switch */
9502         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
9503         if (ret)
9504                 goto err_veb;
9505         if (vsi_idx == pf->lan_vsi)
9506                 pf->lan_veb = veb->idx;
9507
9508         return veb;
9509
9510 err_veb:
9511         i40e_veb_clear(veb);
9512 err_alloc:
9513         return NULL;
9514 }
9515
9516 /**
9517  * i40e_setup_pf_switch_element - set PF vars based on switch type
9518  * @pf: board private structure
9519  * @ele: element we are building info from
9520  * @num_reported: total number of elements
9521  * @printconfig: should we print the contents
9522  *
9523  * helper function to assist in extracting a few useful SEID values.
9524  **/
9525 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
9526                                 struct i40e_aqc_switch_config_element_resp *ele,
9527                                 u16 num_reported, bool printconfig)
9528 {
9529         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
9530         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
9531         u8 element_type = ele->element_type;
9532         u16 seid = le16_to_cpu(ele->seid);
9533
9534         if (printconfig)
9535                 dev_info(&pf->pdev->dev,
9536                          "type=%d seid=%d uplink=%d downlink=%d\n",
9537                          element_type, seid, uplink_seid, downlink_seid);
9538
9539         switch (element_type) {
9540         case I40E_SWITCH_ELEMENT_TYPE_MAC:
9541                 pf->mac_seid = seid;
9542                 break;
9543         case I40E_SWITCH_ELEMENT_TYPE_VEB:
9544                 /* Main VEB? */
9545                 if (uplink_seid != pf->mac_seid)
9546                         break;
9547                 if (pf->lan_veb == I40E_NO_VEB) {
9548                         int v;
9549
9550                         /* find existing or else empty VEB */
9551                         for (v = 0; v < I40E_MAX_VEB; v++) {
9552                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
9553                                         pf->lan_veb = v;
9554                                         break;
9555                                 }
9556                         }
9557                         if (pf->lan_veb == I40E_NO_VEB) {
9558                                 v = i40e_veb_mem_alloc(pf);
9559                                 if (v < 0)
9560                                         break;
9561                                 pf->lan_veb = v;
9562                         }
9563                 }
9564
9565                 pf->veb[pf->lan_veb]->seid = seid;
9566                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
9567                 pf->veb[pf->lan_veb]->pf = pf;
9568                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
9569                 break;
9570         case I40E_SWITCH_ELEMENT_TYPE_VSI:
9571                 if (num_reported != 1)
9572                         break;
9573                 /* This is immediately after a reset so we can assume this is
9574                  * the PF's VSI
9575                  */
9576                 pf->mac_seid = uplink_seid;
9577                 pf->pf_seid = downlink_seid;
9578                 pf->main_vsi_seid = seid;
9579                 if (printconfig)
9580                         dev_info(&pf->pdev->dev,
9581                                  "pf_seid=%d main_vsi_seid=%d\n",
9582                                  pf->pf_seid, pf->main_vsi_seid);
9583                 break;
9584         case I40E_SWITCH_ELEMENT_TYPE_PF:
9585         case I40E_SWITCH_ELEMENT_TYPE_VF:
9586         case I40E_SWITCH_ELEMENT_TYPE_EMP:
9587         case I40E_SWITCH_ELEMENT_TYPE_BMC:
9588         case I40E_SWITCH_ELEMENT_TYPE_PE:
9589         case I40E_SWITCH_ELEMENT_TYPE_PA:
9590                 /* ignore these for now */
9591                 break;
9592         default:
9593                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
9594                          element_type, seid);
9595                 break;
9596         }
9597 }
9598
9599 /**
9600  * i40e_fetch_switch_configuration - Get switch config from firmware
9601  * @pf: board private structure
9602  * @printconfig: should we print the contents
9603  *
9604  * Get the current switch configuration from the device and
9605  * extract a few useful SEID values.
9606  **/
9607 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
9608 {
9609         struct i40e_aqc_get_switch_config_resp *sw_config;
9610         u16 next_seid = 0;
9611         int ret = 0;
9612         u8 *aq_buf;
9613         int i;
9614
9615         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
9616         if (!aq_buf)
9617                 return -ENOMEM;
9618
9619         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
9620         do {
9621                 u16 num_reported, num_total;
9622
9623                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
9624                                                 I40E_AQ_LARGE_BUF,
9625                                                 &next_seid, NULL);
9626                 if (ret) {
9627                         dev_info(&pf->pdev->dev,
9628                                  "get switch config failed err %s aq_err %s\n",
9629                                  i40e_stat_str(&pf->hw, ret),
9630                                  i40e_aq_str(&pf->hw,
9631                                              pf->hw.aq.asq_last_status));
9632                         kfree(aq_buf);
9633                         return -ENOENT;
9634                 }
9635
9636                 num_reported = le16_to_cpu(sw_config->header.num_reported);
9637                 num_total = le16_to_cpu(sw_config->header.num_total);
9638
9639                 if (printconfig)
9640                         dev_info(&pf->pdev->dev,
9641                                  "header: %d reported %d total\n",
9642                                  num_reported, num_total);
9643
9644                 for (i = 0; i < num_reported; i++) {
9645                         struct i40e_aqc_switch_config_element_resp *ele =
9646                                 &sw_config->element[i];
9647
9648                         i40e_setup_pf_switch_element(pf, ele, num_reported,
9649                                                      printconfig);
9650                 }
9651         } while (next_seid != 0);
9652
9653         kfree(aq_buf);
9654         return ret;
9655 }
9656
9657 /**
9658  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
9659  * @pf: board private structure
9660  * @reinit: if the Main VSI needs to re-initialized.
9661  *
9662  * Returns 0 on success, negative value on failure
9663  **/
9664 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
9665 {
9666         int ret;
9667
9668         /* find out what's out there already */
9669         ret = i40e_fetch_switch_configuration(pf, false);
9670         if (ret) {
9671                 dev_info(&pf->pdev->dev,
9672                          "couldn't fetch switch config, err %s aq_err %s\n",
9673                          i40e_stat_str(&pf->hw, ret),
9674                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9675                 return ret;
9676         }
9677         i40e_pf_reset_stats(pf);
9678
9679         /* first time setup */
9680         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
9681                 struct i40e_vsi *vsi = NULL;
9682                 u16 uplink_seid;
9683
9684                 /* Set up the PF VSI associated with the PF's main VSI
9685                  * that is already in the HW switch
9686                  */
9687                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
9688                         uplink_seid = pf->veb[pf->lan_veb]->seid;
9689                 else
9690                         uplink_seid = pf->mac_seid;
9691                 if (pf->lan_vsi == I40E_NO_VSI)
9692                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
9693                 else if (reinit)
9694                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
9695                 if (!vsi) {
9696                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
9697                         i40e_fdir_teardown(pf);
9698                         return -EAGAIN;
9699                 }
9700         } else {
9701                 /* force a reset of TC and queue layout configurations */
9702                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9703                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9704                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9705                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9706         }
9707         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
9708
9709         i40e_fdir_sb_setup(pf);
9710
9711         /* Setup static PF queue filter control settings */
9712         ret = i40e_setup_pf_filter_control(pf);
9713         if (ret) {
9714                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
9715                          ret);
9716                 /* Failure here should not stop continuing other steps */
9717         }
9718
9719         /* enable RSS in the HW, even for only one queue, as the stack can use
9720          * the hash
9721          */
9722         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
9723                 i40e_config_rss(pf);
9724
9725         /* fill in link information and enable LSE reporting */
9726         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
9727         i40e_link_event(pf);
9728
9729         /* Initialize user-specific link properties */
9730         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
9731                                   I40E_AQ_AN_COMPLETED) ? true : false);
9732
9733         i40e_ptp_init(pf);
9734
9735         return ret;
9736 }
9737
9738 /**
9739  * i40e_determine_queue_usage - Work out queue distribution
9740  * @pf: board private structure
9741  **/
9742 static void i40e_determine_queue_usage(struct i40e_pf *pf)
9743 {
9744         int queues_left;
9745
9746         pf->num_lan_qps = 0;
9747 #ifdef I40E_FCOE
9748         pf->num_fcoe_qps = 0;
9749 #endif
9750
9751         /* Find the max queues to be put into basic use.  We'll always be
9752          * using TC0, whether or not DCB is running, and TC0 will get the
9753          * big RSS set.
9754          */
9755         queues_left = pf->hw.func_caps.num_tx_qp;
9756
9757         if ((queues_left == 1) ||
9758             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
9759                 /* one qp for PF, no queues for anything else */
9760                 queues_left = 0;
9761                 pf->rss_size = pf->num_lan_qps = 1;
9762
9763                 /* make sure all the fancies are disabled */
9764                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9765 #ifdef I40E_FCOE
9766                                I40E_FLAG_FCOE_ENABLED   |
9767 #endif
9768                                I40E_FLAG_FD_SB_ENABLED  |
9769                                I40E_FLAG_FD_ATR_ENABLED |
9770                                I40E_FLAG_DCB_CAPABLE    |
9771                                I40E_FLAG_SRIOV_ENABLED  |
9772                                I40E_FLAG_VMDQ_ENABLED);
9773         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
9774                                   I40E_FLAG_FD_SB_ENABLED |
9775                                   I40E_FLAG_FD_ATR_ENABLED |
9776                                   I40E_FLAG_DCB_CAPABLE))) {
9777                 /* one qp for PF */
9778                 pf->rss_size = pf->num_lan_qps = 1;
9779                 queues_left -= pf->num_lan_qps;
9780
9781                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9782 #ifdef I40E_FCOE
9783                                I40E_FLAG_FCOE_ENABLED   |
9784 #endif
9785                                I40E_FLAG_FD_SB_ENABLED  |
9786                                I40E_FLAG_FD_ATR_ENABLED |
9787                                I40E_FLAG_DCB_ENABLED    |
9788                                I40E_FLAG_VMDQ_ENABLED);
9789         } else {
9790                 /* Not enough queues for all TCs */
9791                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
9792                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
9793                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9794                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
9795                 }
9796                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
9797                                         num_online_cpus());
9798                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
9799                                         pf->hw.func_caps.num_tx_qp);
9800
9801                 queues_left -= pf->num_lan_qps;
9802         }
9803
9804 #ifdef I40E_FCOE
9805         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
9806                 if (I40E_DEFAULT_FCOE <= queues_left) {
9807                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
9808                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
9809                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
9810                 } else {
9811                         pf->num_fcoe_qps = 0;
9812                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
9813                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
9814                 }
9815
9816                 queues_left -= pf->num_fcoe_qps;
9817         }
9818
9819 #endif
9820         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9821                 if (queues_left > 1) {
9822                         queues_left -= 1; /* save 1 queue for FD */
9823                 } else {
9824                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
9825                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
9826                 }
9827         }
9828
9829         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9830             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
9831                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
9832                                         (queues_left / pf->num_vf_qps));
9833                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
9834         }
9835
9836         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
9837             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
9838                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
9839                                           (queues_left / pf->num_vmdq_qps));
9840                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
9841         }
9842
9843         pf->queues_left = queues_left;
9844 #ifdef I40E_FCOE
9845         dev_info(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
9846 #endif
9847 }
9848
9849 /**
9850  * i40e_setup_pf_filter_control - Setup PF static filter control
9851  * @pf: PF to be setup
9852  *
9853  * i40e_setup_pf_filter_control sets up a PF's initial filter control
9854  * settings. If PE/FCoE are enabled then it will also set the per PF
9855  * based filter sizes required for them. It also enables Flow director,
9856  * ethertype and macvlan type filter settings for the pf.
9857  *
9858  * Returns 0 on success, negative on failure
9859  **/
9860 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
9861 {
9862         struct i40e_filter_control_settings *settings = &pf->filter_settings;
9863
9864         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
9865
9866         /* Flow Director is enabled */
9867         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
9868                 settings->enable_fdir = true;
9869
9870         /* Ethtype and MACVLAN filters enabled for PF */
9871         settings->enable_ethtype = true;
9872         settings->enable_macvlan = true;
9873
9874         if (i40e_set_filter_control(&pf->hw, settings))
9875                 return -ENOENT;
9876
9877         return 0;
9878 }
9879
9880 #define INFO_STRING_LEN 255
9881 static void i40e_print_features(struct i40e_pf *pf)
9882 {
9883         struct i40e_hw *hw = &pf->hw;
9884         char *buf, *string;
9885
9886         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
9887         if (!string) {
9888                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
9889                 return;
9890         }
9891
9892         buf = string;
9893
9894         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
9895 #ifdef CONFIG_PCI_IOV
9896         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
9897 #endif
9898         buf += sprintf(buf, "VSIs: %d QP: %d RX: %s ",
9899                        pf->hw.func_caps.num_vsis,
9900                        pf->vsi[pf->lan_vsi]->num_queue_pairs,
9901                        pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
9902
9903         if (pf->flags & I40E_FLAG_RSS_ENABLED)
9904                 buf += sprintf(buf, "RSS ");
9905         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
9906                 buf += sprintf(buf, "FD_ATR ");
9907         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9908                 buf += sprintf(buf, "FD_SB ");
9909                 buf += sprintf(buf, "NTUPLE ");
9910         }
9911         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
9912                 buf += sprintf(buf, "DCB ");
9913         if (pf->flags & I40E_FLAG_PTP)
9914                 buf += sprintf(buf, "PTP ");
9915 #ifdef I40E_FCOE
9916         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
9917                 buf += sprintf(buf, "FCOE ");
9918 #endif
9919
9920         BUG_ON(buf > (string + INFO_STRING_LEN));
9921         dev_info(&pf->pdev->dev, "%s\n", string);
9922         kfree(string);
9923 }
9924
9925 /**
9926  * i40e_probe - Device initialization routine
9927  * @pdev: PCI device information struct
9928  * @ent: entry in i40e_pci_tbl
9929  *
9930  * i40e_probe initializes a PF identified by a pci_dev structure.
9931  * The OS initialization, configuring of the PF private structure,
9932  * and a hardware reset occur.
9933  *
9934  * Returns 0 on success, negative on failure
9935  **/
9936 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9937 {
9938         struct i40e_aq_get_phy_abilities_resp abilities;
9939         struct i40e_pf *pf;
9940         struct i40e_hw *hw;
9941         static u16 pfs_found;
9942         u16 link_status;
9943         int err = 0;
9944         u32 len;
9945         u32 i;
9946
9947         err = pci_enable_device_mem(pdev);
9948         if (err)
9949                 return err;
9950
9951         /* set up for high or low dma */
9952         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
9953         if (err) {
9954                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
9955                 if (err) {
9956                         dev_err(&pdev->dev,
9957                                 "DMA configuration failed: 0x%x\n", err);
9958                         goto err_dma;
9959                 }
9960         }
9961
9962         /* set up pci connections */
9963         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
9964                                            IORESOURCE_MEM), i40e_driver_name);
9965         if (err) {
9966                 dev_info(&pdev->dev,
9967                          "pci_request_selected_regions failed %d\n", err);
9968                 goto err_pci_reg;
9969         }
9970
9971         pci_enable_pcie_error_reporting(pdev);
9972         pci_set_master(pdev);
9973
9974         /* Now that we have a PCI connection, we need to do the
9975          * low level device setup.  This is primarily setting up
9976          * the Admin Queue structures and then querying for the
9977          * device's current profile information.
9978          */
9979         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
9980         if (!pf) {
9981                 err = -ENOMEM;
9982                 goto err_pf_alloc;
9983         }
9984         pf->next_vsi = 0;
9985         pf->pdev = pdev;
9986         set_bit(__I40E_DOWN, &pf->state);
9987
9988         hw = &pf->hw;
9989         hw->back = pf;
9990
9991         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
9992                                 I40E_MAX_CSR_SPACE);
9993
9994         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
9995         if (!hw->hw_addr) {
9996                 err = -EIO;
9997                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
9998                          (unsigned int)pci_resource_start(pdev, 0),
9999                          pf->ioremap_len, err);
10000                 goto err_ioremap;
10001         }
10002         hw->vendor_id = pdev->vendor;
10003         hw->device_id = pdev->device;
10004         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10005         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10006         hw->subsystem_device_id = pdev->subsystem_device;
10007         hw->bus.device = PCI_SLOT(pdev->devfn);
10008         hw->bus.func = PCI_FUNC(pdev->devfn);
10009         pf->instance = pfs_found;
10010
10011         if (debug != -1) {
10012                 pf->msg_enable = pf->hw.debug_mask;
10013                 pf->msg_enable = debug;
10014         }
10015
10016         /* do a special CORER for clearing PXE mode once at init */
10017         if (hw->revision_id == 0 &&
10018             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10019                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10020                 i40e_flush(hw);
10021                 msleep(200);
10022                 pf->corer_count++;
10023
10024                 i40e_clear_pxe_mode(hw);
10025         }
10026
10027         /* Reset here to make sure all is clean and to define PF 'n' */
10028         i40e_clear_hw(hw);
10029         err = i40e_pf_reset(hw);
10030         if (err) {
10031                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10032                 goto err_pf_reset;
10033         }
10034         pf->pfr_count++;
10035
10036         hw->aq.num_arq_entries = I40E_AQ_LEN;
10037         hw->aq.num_asq_entries = I40E_AQ_LEN;
10038         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10039         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10040         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10041
10042         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10043                  "%s-%s:misc",
10044                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10045
10046         err = i40e_init_shared_code(hw);
10047         if (err) {
10048                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10049                          err);
10050                 goto err_pf_reset;
10051         }
10052
10053         /* set up a default setting for link flow control */
10054         pf->hw.fc.requested_mode = I40E_FC_NONE;
10055
10056         err = i40e_init_adminq(hw);
10057         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
10058         if (err) {
10059                 dev_info(&pdev->dev,
10060                          "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");
10061                 goto err_pf_reset;
10062         }
10063
10064         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10065             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10066                 dev_info(&pdev->dev,
10067                          "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");
10068         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10069                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10070                 dev_info(&pdev->dev,
10071                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10072
10073         i40e_verify_eeprom(pf);
10074
10075         /* Rev 0 hardware was never productized */
10076         if (hw->revision_id < 1)
10077                 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");
10078
10079         i40e_clear_pxe_mode(hw);
10080         err = i40e_get_capabilities(pf);
10081         if (err)
10082                 goto err_adminq_setup;
10083
10084         err = i40e_sw_init(pf);
10085         if (err) {
10086                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10087                 goto err_sw_init;
10088         }
10089
10090         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10091                                 hw->func_caps.num_rx_qp,
10092                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10093         if (err) {
10094                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10095                 goto err_init_lan_hmc;
10096         }
10097
10098         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10099         if (err) {
10100                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10101                 err = -ENOENT;
10102                 goto err_configure_lan_hmc;
10103         }
10104
10105         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10106          * Ignore error return codes because if it was already disabled via
10107          * hardware settings this will fail
10108          */
10109         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
10110             (pf->hw.aq.fw_maj_ver < 4)) {
10111                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10112                 i40e_aq_stop_lldp(hw, true, NULL);
10113         }
10114
10115         i40e_get_mac_addr(hw, hw->mac.addr);
10116         if (!is_valid_ether_addr(hw->mac.addr)) {
10117                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10118                 err = -EIO;
10119                 goto err_mac_addr;
10120         }
10121         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10122         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10123         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10124         if (is_valid_ether_addr(hw->mac.port_addr))
10125                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10126 #ifdef I40E_FCOE
10127         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10128         if (err)
10129                 dev_info(&pdev->dev,
10130                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10131         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10132                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10133                          hw->mac.san_addr);
10134                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10135         }
10136         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10137 #endif /* I40E_FCOE */
10138
10139         pci_set_drvdata(pdev, pf);
10140         pci_save_state(pdev);
10141 #ifdef CONFIG_I40E_DCB
10142         err = i40e_init_pf_dcb(pf);
10143         if (err) {
10144                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10145                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10146                 /* Continue without DCB enabled */
10147         }
10148 #endif /* CONFIG_I40E_DCB */
10149
10150         /* set up periodic task facility */
10151         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10152         pf->service_timer_period = HZ;
10153
10154         INIT_WORK(&pf->service_task, i40e_service_task);
10155         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10156         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10157
10158         /* WoL defaults to disabled */
10159         pf->wol_en = false;
10160         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10161
10162         /* set up the main switch operations */
10163         i40e_determine_queue_usage(pf);
10164         err = i40e_init_interrupt_scheme(pf);
10165         if (err)
10166                 goto err_switch_setup;
10167
10168         /* The number of VSIs reported by the FW is the minimum guaranteed
10169          * to us; HW supports far more and we share the remaining pool with
10170          * the other PFs. We allocate space for more than the guarantee with
10171          * the understanding that we might not get them all later.
10172          */
10173         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10174                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10175         else
10176                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10177
10178         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10179         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
10180         pf->vsi = kzalloc(len, GFP_KERNEL);
10181         if (!pf->vsi) {
10182                 err = -ENOMEM;
10183                 goto err_switch_setup;
10184         }
10185
10186 #ifdef CONFIG_PCI_IOV
10187         /* prep for VF support */
10188         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10189             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10190             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10191                 if (pci_num_vf(pdev))
10192                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
10193         }
10194 #endif
10195         err = i40e_setup_pf_switch(pf, false);
10196         if (err) {
10197                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
10198                 goto err_vsis;
10199         }
10200         /* if FDIR VSI was set up, start it now */
10201         for (i = 0; i < pf->num_alloc_vsi; i++) {
10202                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
10203                         i40e_vsi_open(pf->vsi[i]);
10204                         break;
10205                 }
10206         }
10207
10208         /* driver is only interested in link up/down and module qualification
10209          * reports from firmware
10210          */
10211         err = i40e_aq_set_phy_int_mask(&pf->hw,
10212                                        I40E_AQ_EVENT_LINK_UPDOWN |
10213                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
10214         if (err)
10215                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
10216                          i40e_stat_str(&pf->hw, err),
10217                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10218
10219         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
10220             (pf->hw.aq.fw_maj_ver < 4)) {
10221                 msleep(75);
10222                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
10223                 if (err)
10224                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
10225                                  i40e_stat_str(&pf->hw, err),
10226                                  i40e_aq_str(&pf->hw,
10227                                              pf->hw.aq.asq_last_status));
10228         }
10229         /* The main driver is (mostly) up and happy. We need to set this state
10230          * before setting up the misc vector or we get a race and the vector
10231          * ends up disabled forever.
10232          */
10233         clear_bit(__I40E_DOWN, &pf->state);
10234
10235         /* In case of MSIX we are going to setup the misc vector right here
10236          * to handle admin queue events etc. In case of legacy and MSI
10237          * the misc functionality and queue processing is combined in
10238          * the same vector and that gets setup at open.
10239          */
10240         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
10241                 err = i40e_setup_misc_vector(pf);
10242                 if (err) {
10243                         dev_info(&pdev->dev,
10244                                  "setup of misc vector failed: %d\n", err);
10245                         goto err_vsis;
10246                 }
10247         }
10248
10249 #ifdef CONFIG_PCI_IOV
10250         /* prep for VF support */
10251         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10252             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10253             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10254                 u32 val;
10255
10256                 /* disable link interrupts for VFs */
10257                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
10258                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
10259                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
10260                 i40e_flush(hw);
10261
10262                 if (pci_num_vf(pdev)) {
10263                         dev_info(&pdev->dev,
10264                                  "Active VFs found, allocating resources.\n");
10265                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
10266                         if (err)
10267                                 dev_info(&pdev->dev,
10268                                          "Error %d allocating resources for existing VFs\n",
10269                                          err);
10270                 }
10271         }
10272 #endif /* CONFIG_PCI_IOV */
10273
10274         pfs_found++;
10275
10276         i40e_dbg_pf_init(pf);
10277
10278         /* tell the firmware that we're starting */
10279         i40e_send_version(pf);
10280
10281         /* since everything's happy, start the service_task timer */
10282         mod_timer(&pf->service_timer,
10283                   round_jiffies(jiffies + pf->service_timer_period));
10284
10285 #ifdef I40E_FCOE
10286         /* create FCoE interface */
10287         i40e_fcoe_vsi_setup(pf);
10288
10289 #endif
10290         /* Get the negotiated link width and speed from PCI config space */
10291         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
10292
10293         i40e_set_pci_config_data(hw, link_status);
10294
10295         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
10296                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
10297                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
10298                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
10299                  "Unknown"),
10300                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
10301                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
10302                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
10303                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
10304                  "Unknown"));
10305
10306         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
10307             hw->bus.speed < i40e_bus_speed_8000) {
10308                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
10309                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
10310         }
10311
10312         /* get the requested speeds from the fw */
10313         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
10314         if (err)
10315                 dev_info(&pf->pdev->dev,
10316                          "get phy capabilities failed, err %s aq_err %s, advertised speed settings may not be correct\n",
10317                          i40e_stat_str(&pf->hw, err),
10318                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10319         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
10320
10321         /* print a string summarizing features */
10322         i40e_print_features(pf);
10323
10324         return 0;
10325
10326         /* Unwind what we've done if something failed in the setup */
10327 err_vsis:
10328         set_bit(__I40E_DOWN, &pf->state);
10329         i40e_clear_interrupt_scheme(pf);
10330         kfree(pf->vsi);
10331 err_switch_setup:
10332         i40e_reset_interrupt_capability(pf);
10333         del_timer_sync(&pf->service_timer);
10334 err_mac_addr:
10335 err_configure_lan_hmc:
10336         (void)i40e_shutdown_lan_hmc(hw);
10337 err_init_lan_hmc:
10338         kfree(pf->qp_pile);
10339 err_sw_init:
10340 err_adminq_setup:
10341         (void)i40e_shutdown_adminq(hw);
10342 err_pf_reset:
10343         iounmap(hw->hw_addr);
10344 err_ioremap:
10345         kfree(pf);
10346 err_pf_alloc:
10347         pci_disable_pcie_error_reporting(pdev);
10348         pci_release_selected_regions(pdev,
10349                                      pci_select_bars(pdev, IORESOURCE_MEM));
10350 err_pci_reg:
10351 err_dma:
10352         pci_disable_device(pdev);
10353         return err;
10354 }
10355
10356 /**
10357  * i40e_remove - Device removal routine
10358  * @pdev: PCI device information struct
10359  *
10360  * i40e_remove is called by the PCI subsystem to alert the driver
10361  * that is should release a PCI device.  This could be caused by a
10362  * Hot-Plug event, or because the driver is going to be removed from
10363  * memory.
10364  **/
10365 static void i40e_remove(struct pci_dev *pdev)
10366 {
10367         struct i40e_pf *pf = pci_get_drvdata(pdev);
10368         i40e_status ret_code;
10369         int i;
10370
10371         i40e_dbg_pf_exit(pf);
10372
10373         i40e_ptp_stop(pf);
10374
10375         /* no more scheduling of any task */
10376         set_bit(__I40E_DOWN, &pf->state);
10377         del_timer_sync(&pf->service_timer);
10378         cancel_work_sync(&pf->service_task);
10379         i40e_fdir_teardown(pf);
10380
10381         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
10382                 i40e_free_vfs(pf);
10383                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
10384         }
10385
10386         i40e_fdir_teardown(pf);
10387
10388         /* If there is a switch structure or any orphans, remove them.
10389          * This will leave only the PF's VSI remaining.
10390          */
10391         for (i = 0; i < I40E_MAX_VEB; i++) {
10392                 if (!pf->veb[i])
10393                         continue;
10394
10395                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
10396                     pf->veb[i]->uplink_seid == 0)
10397                         i40e_switch_branch_release(pf->veb[i]);
10398         }
10399
10400         /* Now we can shutdown the PF's VSI, just before we kill
10401          * adminq and hmc.
10402          */
10403         if (pf->vsi[pf->lan_vsi])
10404                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
10405
10406         /* shutdown and destroy the HMC */
10407         if (pf->hw.hmc.hmc_obj) {
10408                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
10409                 if (ret_code)
10410                         dev_warn(&pdev->dev,
10411                                  "Failed to destroy the HMC resources: %d\n",
10412                                  ret_code);
10413         }
10414
10415         /* shutdown the adminq */
10416         ret_code = i40e_shutdown_adminq(&pf->hw);
10417         if (ret_code)
10418                 dev_warn(&pdev->dev,
10419                          "Failed to destroy the Admin Queue resources: %d\n",
10420                          ret_code);
10421
10422         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
10423         i40e_clear_interrupt_scheme(pf);
10424         for (i = 0; i < pf->num_alloc_vsi; i++) {
10425                 if (pf->vsi[i]) {
10426                         i40e_vsi_clear_rings(pf->vsi[i]);
10427                         i40e_vsi_clear(pf->vsi[i]);
10428                         pf->vsi[i] = NULL;
10429                 }
10430         }
10431
10432         for (i = 0; i < I40E_MAX_VEB; i++) {
10433                 kfree(pf->veb[i]);
10434                 pf->veb[i] = NULL;
10435         }
10436
10437         kfree(pf->qp_pile);
10438         kfree(pf->vsi);
10439
10440         iounmap(pf->hw.hw_addr);
10441         kfree(pf);
10442         pci_release_selected_regions(pdev,
10443                                      pci_select_bars(pdev, IORESOURCE_MEM));
10444
10445         pci_disable_pcie_error_reporting(pdev);
10446         pci_disable_device(pdev);
10447 }
10448
10449 /**
10450  * i40e_pci_error_detected - warning that something funky happened in PCI land
10451  * @pdev: PCI device information struct
10452  *
10453  * Called to warn that something happened and the error handling steps
10454  * are in progress.  Allows the driver to quiesce things, be ready for
10455  * remediation.
10456  **/
10457 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
10458                                                 enum pci_channel_state error)
10459 {
10460         struct i40e_pf *pf = pci_get_drvdata(pdev);
10461
10462         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
10463
10464         /* shutdown all operations */
10465         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
10466                 rtnl_lock();
10467                 i40e_prep_for_reset(pf);
10468                 rtnl_unlock();
10469         }
10470
10471         /* Request a slot reset */
10472         return PCI_ERS_RESULT_NEED_RESET;
10473 }
10474
10475 /**
10476  * i40e_pci_error_slot_reset - a PCI slot reset just happened
10477  * @pdev: PCI device information struct
10478  *
10479  * Called to find if the driver can work with the device now that
10480  * the pci slot has been reset.  If a basic connection seems good
10481  * (registers are readable and have sane content) then return a
10482  * happy little PCI_ERS_RESULT_xxx.
10483  **/
10484 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
10485 {
10486         struct i40e_pf *pf = pci_get_drvdata(pdev);
10487         pci_ers_result_t result;
10488         int err;
10489         u32 reg;
10490
10491         dev_info(&pdev->dev, "%s\n", __func__);
10492         if (pci_enable_device_mem(pdev)) {
10493                 dev_info(&pdev->dev,
10494                          "Cannot re-enable PCI device after reset.\n");
10495                 result = PCI_ERS_RESULT_DISCONNECT;
10496         } else {
10497                 pci_set_master(pdev);
10498                 pci_restore_state(pdev);
10499                 pci_save_state(pdev);
10500                 pci_wake_from_d3(pdev, false);
10501
10502                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
10503                 if (reg == 0)
10504                         result = PCI_ERS_RESULT_RECOVERED;
10505                 else
10506                         result = PCI_ERS_RESULT_DISCONNECT;
10507         }
10508
10509         err = pci_cleanup_aer_uncorrect_error_status(pdev);
10510         if (err) {
10511                 dev_info(&pdev->dev,
10512                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
10513                          err);
10514                 /* non-fatal, continue */
10515         }
10516
10517         return result;
10518 }
10519
10520 /**
10521  * i40e_pci_error_resume - restart operations after PCI error recovery
10522  * @pdev: PCI device information struct
10523  *
10524  * Called to allow the driver to bring things back up after PCI error
10525  * and/or reset recovery has finished.
10526  **/
10527 static void i40e_pci_error_resume(struct pci_dev *pdev)
10528 {
10529         struct i40e_pf *pf = pci_get_drvdata(pdev);
10530
10531         dev_info(&pdev->dev, "%s\n", __func__);
10532         if (test_bit(__I40E_SUSPENDED, &pf->state))
10533                 return;
10534
10535         rtnl_lock();
10536         i40e_handle_reset_warning(pf);
10537         rtnl_unlock();
10538 }
10539
10540 /**
10541  * i40e_shutdown - PCI callback for shutting down
10542  * @pdev: PCI device information struct
10543  **/
10544 static void i40e_shutdown(struct pci_dev *pdev)
10545 {
10546         struct i40e_pf *pf = pci_get_drvdata(pdev);
10547         struct i40e_hw *hw = &pf->hw;
10548
10549         set_bit(__I40E_SUSPENDED, &pf->state);
10550         set_bit(__I40E_DOWN, &pf->state);
10551         rtnl_lock();
10552         i40e_prep_for_reset(pf);
10553         rtnl_unlock();
10554
10555         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10556         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10557
10558         del_timer_sync(&pf->service_timer);
10559         cancel_work_sync(&pf->service_task);
10560         i40e_fdir_teardown(pf);
10561
10562         rtnl_lock();
10563         i40e_prep_for_reset(pf);
10564         rtnl_unlock();
10565
10566         wr32(hw, I40E_PFPM_APM,
10567              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10568         wr32(hw, I40E_PFPM_WUFC,
10569              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10570
10571         i40e_clear_interrupt_scheme(pf);
10572
10573         if (system_state == SYSTEM_POWER_OFF) {
10574                 pci_wake_from_d3(pdev, pf->wol_en);
10575                 pci_set_power_state(pdev, PCI_D3hot);
10576         }
10577 }
10578
10579 #ifdef CONFIG_PM
10580 /**
10581  * i40e_suspend - PCI callback for moving to D3
10582  * @pdev: PCI device information struct
10583  **/
10584 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
10585 {
10586         struct i40e_pf *pf = pci_get_drvdata(pdev);
10587         struct i40e_hw *hw = &pf->hw;
10588
10589         set_bit(__I40E_SUSPENDED, &pf->state);
10590         set_bit(__I40E_DOWN, &pf->state);
10591
10592         rtnl_lock();
10593         i40e_prep_for_reset(pf);
10594         rtnl_unlock();
10595
10596         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10597         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10598
10599         pci_wake_from_d3(pdev, pf->wol_en);
10600         pci_set_power_state(pdev, PCI_D3hot);
10601
10602         return 0;
10603 }
10604
10605 /**
10606  * i40e_resume - PCI callback for waking up from D3
10607  * @pdev: PCI device information struct
10608  **/
10609 static int i40e_resume(struct pci_dev *pdev)
10610 {
10611         struct i40e_pf *pf = pci_get_drvdata(pdev);
10612         u32 err;
10613
10614         pci_set_power_state(pdev, PCI_D0);
10615         pci_restore_state(pdev);
10616         /* pci_restore_state() clears dev->state_saves, so
10617          * call pci_save_state() again to restore it.
10618          */
10619         pci_save_state(pdev);
10620
10621         err = pci_enable_device_mem(pdev);
10622         if (err) {
10623                 dev_err(&pdev->dev,
10624                         "%s: Cannot enable PCI device from suspend\n",
10625                         __func__);
10626                 return err;
10627         }
10628         pci_set_master(pdev);
10629
10630         /* no wakeup events while running */
10631         pci_wake_from_d3(pdev, false);
10632
10633         /* handling the reset will rebuild the device state */
10634         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
10635                 clear_bit(__I40E_DOWN, &pf->state);
10636                 rtnl_lock();
10637                 i40e_reset_and_rebuild(pf, false);
10638                 rtnl_unlock();
10639         }
10640
10641         return 0;
10642 }
10643
10644 #endif
10645 static const struct pci_error_handlers i40e_err_handler = {
10646         .error_detected = i40e_pci_error_detected,
10647         .slot_reset = i40e_pci_error_slot_reset,
10648         .resume = i40e_pci_error_resume,
10649 };
10650
10651 static struct pci_driver i40e_driver = {
10652         .name     = i40e_driver_name,
10653         .id_table = i40e_pci_tbl,
10654         .probe    = i40e_probe,
10655         .remove   = i40e_remove,
10656 #ifdef CONFIG_PM
10657         .suspend  = i40e_suspend,
10658         .resume   = i40e_resume,
10659 #endif
10660         .shutdown = i40e_shutdown,
10661         .err_handler = &i40e_err_handler,
10662         .sriov_configure = i40e_pci_sriov_configure,
10663 };
10664
10665 /**
10666  * i40e_init_module - Driver registration routine
10667  *
10668  * i40e_init_module is the first routine called when the driver is
10669  * loaded. All it does is register with the PCI subsystem.
10670  **/
10671 static int __init i40e_init_module(void)
10672 {
10673         pr_info("%s: %s - version %s\n", i40e_driver_name,
10674                 i40e_driver_string, i40e_driver_version_str);
10675         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
10676
10677         i40e_dbg_init();
10678         return pci_register_driver(&i40e_driver);
10679 }
10680 module_init(i40e_init_module);
10681
10682 /**
10683  * i40e_exit_module - Driver exit cleanup routine
10684  *
10685  * i40e_exit_module is called just before the driver is removed
10686  * from memory.
10687  **/
10688 static void __exit i40e_exit_module(void)
10689 {
10690         pci_unregister_driver(&i40e_driver);
10691         i40e_dbg_exit();
10692 }
10693 module_exit(i40e_exit_module);