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 6
  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
 303         pf->tx_timeout_count++;
 304
 305         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 306                 pf->tx_timeout_recovery_level = 1;
 307         pf->tx_timeout_last_recovery = jiffies;
 308         netdev_info(netdev, "tx_timeout recovery level %d\n",
 309                     pf->tx_timeout_recovery_level);
 310
 311         switch (pf->tx_timeout_recovery_level) {
 312         case 0:
 313                 /* disable and re-enable queues for the VSI */
 314                 if (in_interrupt()) {
 315                         set_bit(__I40E_REINIT_REQUESTED, &pf->state);
 316                         set_bit(__I40E_REINIT_REQUESTED, &vsi->state);
 317                 } else {
 318                         i40e_vsi_reinit_locked(vsi);
 319                 }
 320                 break;
 321         case 1:
 322                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 323                 break;
 324         case 2:
 325                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 326                 break;
 327         case 3:
 328                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 329                 break;
 330         default:
 331                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 332                 set_bit(__I40E_DOWN_REQUESTED, &pf->state);
 333                 set_bit(__I40E_DOWN_REQUESTED, &vsi->state);
 334                 break;
 335         }
 336         i40e_service_event_schedule(pf);
 337         pf->tx_timeout_recovery_level++;
 338 }
 339
 340 /**
 341  * i40e_release_rx_desc - Store the new tail and head values
 342  * @rx_ring: ring to bump
 343  * @val: new head index
 344  **/
 345 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 346 {
 347         rx_ring->next_to_use = val;
 348
 349         /* Force memory writes to complete before letting h/w
 350          * know there are new descriptors to fetch.  (Only
 351          * applicable for weak-ordered memory model archs,
 352          * such as IA-64).
 353          */
 354         wmb();
 355         writel(val, rx_ring->tail);
 356 }
 357
 358 /**
 359  * i40e_get_vsi_stats_struct - Get System Network Statistics
 360  * @vsi: the VSI we care about
 361  *
 362  * Returns the address of the device statistics structure.
 363  * The statistics are actually updated from the service task.
 364  **/
 365 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 366 {
 367         return &vsi->net_stats;
 368 }
 369
 370 /**
 371  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 372  * @netdev: network interface device structure
 373  *
 374  * Returns the address of the device statistics structure.
 375  * The statistics are actually updated from the service task.
 376  **/
 377 #ifdef I40E_FCOE
 378 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 379                                              struct net_device *netdev,
 380                                              struct rtnl_link_stats64 *stats)
 381 #else
 382 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 383                                              struct net_device *netdev,
 384                                              struct rtnl_link_stats64 *stats)
 385 #endif
 386 {
 387         struct i40e_netdev_priv *np = netdev_priv(netdev);
 388         struct i40e_ring *tx_ring, *rx_ring;
 389         struct i40e_vsi *vsi = np->vsi;
 390         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 391         int i;
 392
 393         if (test_bit(__I40E_DOWN, &vsi->state))
 394                 return stats;
 395
 396         if (!vsi->tx_rings)
 397                 return stats;
 398
 399         rcu_read_lock();
 400         for (i = 0; i < vsi->num_queue_pairs; i++) {
 401                 u64 bytes, packets;
 402                 unsigned int start;
 403
 404                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 405                 if (!tx_ring)
 406                         continue;
 407
 408                 do {
 409                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 410                         packets = tx_ring->stats.packets;
 411                         bytes   = tx_ring->stats.bytes;
 412                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 413
 414                 stats->tx_packets += packets;
 415                 stats->tx_bytes   += bytes;
 416                 rx_ring = &tx_ring[1];
 417
 418                 do {
 419                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 420                         packets = rx_ring->stats.packets;
 421                         bytes   = rx_ring->stats.bytes;
 422                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 423
 424                 stats->rx_packets += packets;
 425                 stats->rx_bytes   += bytes;
 426         }
 427         rcu_read_unlock();
 428
 429         /* following stats updated by i40e_watchdog_subtask() */
 430         stats->multicast        = vsi_stats->multicast;
 431         stats->tx_errors        = vsi_stats->tx_errors;
 432         stats->tx_dropped       = vsi_stats->tx_dropped;
 433         stats->rx_errors        = vsi_stats->rx_errors;
 434         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 435         stats->rx_length_errors = vsi_stats->rx_length_errors;
 436
 437         return stats;
 438 }
 439
 440 /**
 441  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 442  * @vsi: the VSI to have its stats reset
 443  **/
 444 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 445 {
 446         struct rtnl_link_stats64 *ns;
 447         int i;
 448
 449         if (!vsi)
 450                 return;
 451
 452         ns = i40e_get_vsi_stats_struct(vsi);
 453         memset(ns, 0, sizeof(*ns));
 454         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 455         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 456         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 457         if (vsi->rx_rings && vsi->rx_rings[0]) {
 458                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 459                         memset(&vsi->rx_rings[i]->stats, 0 ,
 460                                sizeof(vsi->rx_rings[i]->stats));
 461                         memset(&vsi->rx_rings[i]->rx_stats, 0 ,
 462                                sizeof(vsi->rx_rings[i]->rx_stats));
 463                         memset(&vsi->tx_rings[i]->stats, 0 ,
 464                                sizeof(vsi->tx_rings[i]->stats));
 465                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 466                                sizeof(vsi->tx_rings[i]->tx_stats));
 467                 }
 468         }
 469         vsi->stat_offsets_loaded = false;
 470 }
 471
 472 /**
 473  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 474  * @pf: the PF to be reset
 475  **/
 476 void i40e_pf_reset_stats(struct i40e_pf *pf)
 477 {
 478         int i;
 479
 480         memset(&pf->stats, 0, sizeof(pf->stats));
 481         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 482         pf->stat_offsets_loaded = false;
 483
 484         for (i = 0; i < I40E_MAX_VEB; i++) {
 485                 if (pf->veb[i]) {
 486                         memset(&pf->veb[i]->stats, 0,
 487                                sizeof(pf->veb[i]->stats));
 488                         memset(&pf->veb[i]->stats_offsets, 0,
 489                                sizeof(pf->veb[i]->stats_offsets));
 490                         pf->veb[i]->stat_offsets_loaded = false;
 491                 }
 492         }
 493 }
 494
 495 /**
 496  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 497  * @hw: ptr to the hardware info
 498  * @hireg: the high 32 bit reg to read
 499  * @loreg: the low 32 bit reg to read
 500  * @offset_loaded: has the initial offset been loaded yet
 501  * @offset: ptr to current offset value
 502  * @stat: ptr to the stat
 503  *
 504  * Since the device stats are not reset at PFReset, they likely will not
 505  * be zeroed when the driver starts.  We'll save the first values read
 506  * and use them as offsets to be subtracted from the raw values in order
 507  * to report stats that count from zero.  In the process, we also manage
 508  * the potential roll-over.
 509  **/
 510 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 511                                bool offset_loaded, u64 *offset, u64 *stat)
 512 {
 513         u64 new_data;
 514
 515         if (hw->device_id == I40E_DEV_ID_QEMU) {
 516                 new_data = rd32(hw, loreg);
 517                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 518         } else {
 519                 new_data = rd64(hw, loreg);
 520         }
 521         if (!offset_loaded)
 522                 *offset = new_data;
 523         if (likely(new_data >= *offset))
 524                 *stat = new_data - *offset;
 525         else
 526                 *stat = (new_data + BIT_ULL(48)) - *offset;
 527         *stat &= 0xFFFFFFFFFFFFULL;
 528 }
 529
 530 /**
 531  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 532  * @hw: ptr to the hardware info
 533  * @reg: the hw reg to read
 534  * @offset_loaded: has the initial offset been loaded yet
 535  * @offset: ptr to current offset value
 536  * @stat: ptr to the stat
 537  **/
 538 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 539                                bool offset_loaded, u64 *offset, u64 *stat)
 540 {
 541         u32 new_data;
 542
 543         new_data = rd32(hw, reg);
 544         if (!offset_loaded)
 545                 *offset = new_data;
 546         if (likely(new_data >= *offset))
 547                 *stat = (u32)(new_data - *offset);
 548         else
 549                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 550 }
 551
 552 /**
 553  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 554  * @vsi: the VSI to be updated
 555  **/
 556 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 557 {
 558         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 559         struct i40e_pf *pf = vsi->back;
 560         struct i40e_hw *hw = &pf->hw;
 561         struct i40e_eth_stats *oes;
 562         struct i40e_eth_stats *es;     /* device's eth stats */
 563
 564         es = &vsi->eth_stats;
 565         oes = &vsi->eth_stats_offsets;
 566
 567         /* Gather up the stats that the hw collects */
 568         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 569                            vsi->stat_offsets_loaded,
 570                            &oes->tx_errors, &es->tx_errors);
 571         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 572                            vsi->stat_offsets_loaded,
 573                            &oes->rx_discards, &es->rx_discards);
 574         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 575                            vsi->stat_offsets_loaded,
 576                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 577         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 578                            vsi->stat_offsets_loaded,
 579                            &oes->tx_errors, &es->tx_errors);
 580
 581         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 582                            I40E_GLV_GORCL(stat_idx),
 583                            vsi->stat_offsets_loaded,
 584                            &oes->rx_bytes, &es->rx_bytes);
 585         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 586                            I40E_GLV_UPRCL(stat_idx),
 587                            vsi->stat_offsets_loaded,
 588                            &oes->rx_unicast, &es->rx_unicast);
 589         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 590                            I40E_GLV_MPRCL(stat_idx),
 591                            vsi->stat_offsets_loaded,
 592                            &oes->rx_multicast, &es->rx_multicast);
 593         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 594                            I40E_GLV_BPRCL(stat_idx),
 595                            vsi->stat_offsets_loaded,
 596                            &oes->rx_broadcast, &es->rx_broadcast);
 597
 598         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 599                            I40E_GLV_GOTCL(stat_idx),
 600                            vsi->stat_offsets_loaded,
 601                            &oes->tx_bytes, &es->tx_bytes);
 602         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 603                            I40E_GLV_UPTCL(stat_idx),
 604                            vsi->stat_offsets_loaded,
 605                            &oes->tx_unicast, &es->tx_unicast);
 606         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 607                            I40E_GLV_MPTCL(stat_idx),
 608                            vsi->stat_offsets_loaded,
 609                            &oes->tx_multicast, &es->tx_multicast);
 610         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 611                            I40E_GLV_BPTCL(stat_idx),
 612                            vsi->stat_offsets_loaded,
 613                            &oes->tx_broadcast, &es->tx_broadcast);
 614         vsi->stat_offsets_loaded = true;
 615 }
 616
 617 /**
 618  * i40e_update_veb_stats - Update Switch component statistics
 619  * @veb: the VEB being updated
 620  **/
 621 static void i40e_update_veb_stats(struct i40e_veb *veb)
 622 {
 623         struct i40e_pf *pf = veb->pf;
 624         struct i40e_hw *hw = &pf->hw;
 625         struct i40e_eth_stats *oes;
 626         struct i40e_eth_stats *es;     /* device's eth stats */
 627         int idx = 0;
 628
 629         idx = veb->stats_idx;
 630         es = &veb->stats;
 631         oes = &veb->stats_offsets;
 632
 633         /* Gather up the stats that the hw collects */
 634         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 635                            veb->stat_offsets_loaded,
 636                            &oes->tx_discards, &es->tx_discards);
 637         if (hw->revision_id > 0)
 638                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 639                                    veb->stat_offsets_loaded,
 640                                    &oes->rx_unknown_protocol,
 641                                    &es->rx_unknown_protocol);
 642         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 643                            veb->stat_offsets_loaded,
 644                            &oes->rx_bytes, &es->rx_bytes);
 645         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 646                            veb->stat_offsets_loaded,
 647                            &oes->rx_unicast, &es->rx_unicast);
 648         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 649                            veb->stat_offsets_loaded,
 650                            &oes->rx_multicast, &es->rx_multicast);
 651         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 652                            veb->stat_offsets_loaded,
 653                            &oes->rx_broadcast, &es->rx_broadcast);
 654
 655         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 656                            veb->stat_offsets_loaded,
 657                            &oes->tx_bytes, &es->tx_bytes);
 658         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 659                            veb->stat_offsets_loaded,
 660                            &oes->tx_unicast, &es->tx_unicast);
 661         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 662                            veb->stat_offsets_loaded,
 663                            &oes->tx_multicast, &es->tx_multicast);
 664         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 665                            veb->stat_offsets_loaded,
 666                            &oes->tx_broadcast, &es->tx_broadcast);
 667         veb->stat_offsets_loaded = true;
 668 }
 669
 670 #ifdef I40E_FCOE
 671 /**
 672  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 673  * @vsi: the VSI that is capable of doing FCoE
 674  **/
 675 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 676 {
 677         struct i40e_pf *pf = vsi->back;
 678         struct i40e_hw *hw = &pf->hw;
 679         struct i40e_fcoe_stats *ofs;
 680         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 681         int idx;
 682
 683         if (vsi->type != I40E_VSI_FCOE)
 684                 return;
 685
 686         idx = (pf->pf_seid - I40E_BASE_PF_SEID) + I40E_FCOE_PF_STAT_OFFSET;
 687         fs = &vsi->fcoe_stats;
 688         ofs = &vsi->fcoe_stats_offsets;
 689
 690         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 691                            vsi->fcoe_stat_offsets_loaded,
 692                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 693         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 694                            vsi->fcoe_stat_offsets_loaded,
 695                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 696         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 697                            vsi->fcoe_stat_offsets_loaded,
 698                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 699         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 700                            vsi->fcoe_stat_offsets_loaded,
 701                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 702         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 703                            vsi->fcoe_stat_offsets_loaded,
 704                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 705         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 706                            vsi->fcoe_stat_offsets_loaded,
 707                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 708         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 709                            vsi->fcoe_stat_offsets_loaded,
 710                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 711         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 712                            vsi->fcoe_stat_offsets_loaded,
 713                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 714
 715         vsi->fcoe_stat_offsets_loaded = true;
 716 }
 717
 718 #endif
 719 /**
 720  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 721  * @pf: the corresponding PF
 722  *
 723  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 724  **/
 725 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 726 {
 727         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 728         struct i40e_hw_port_stats *nsd = &pf->stats;
 729         struct i40e_hw *hw = &pf->hw;
 730         u64 xoff = 0;
 731         u16 i, v;
 732
 733         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 734             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 735                 return;
 736
 737         xoff = nsd->link_xoff_rx;
 738         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 739                            pf->stat_offsets_loaded,
 740                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 741
 742         /* No new LFC xoff rx */
 743         if (!(nsd->link_xoff_rx - xoff))
 744                 return;
 745
 746         /* Clear the __I40E_HANG_CHECK_ARMED bit for all Tx rings */
 747         for (v = 0; v < pf->num_alloc_vsi; v++) {
 748                 struct i40e_vsi *vsi = pf->vsi[v];
 749
 750                 if (!vsi || !vsi->tx_rings[0])
 751                         continue;
 752
 753                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 754                         struct i40e_ring *ring = vsi->tx_rings[i];
 755                         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
 756                 }
 757         }
 758 }
 759
 760 /**
 761  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 762  * @pf: the corresponding PF
 763  *
 764  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 765  **/
 766 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 767 {
 768         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 769         struct i40e_hw_port_stats *nsd = &pf->stats;
 770         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 771         struct i40e_dcbx_config *dcb_cfg;
 772         struct i40e_hw *hw = &pf->hw;
 773         u16 i, v;
 774         u8 tc;
 775
 776         dcb_cfg = &hw->local_dcbx_config;
 777
 778         /* Collect Link XOFF stats when PFC is disabled */
 779         if (!dcb_cfg->pfc.pfcenable) {
 780                 i40e_update_link_xoff_rx(pf);
 781                 return;
 782         }
 783
 784         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 785                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 786                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 787                                    pf->stat_offsets_loaded,
 788                                    &osd->priority_xoff_rx[i],
 789                                    &nsd->priority_xoff_rx[i]);
 790
 791                 /* No new PFC xoff rx */
 792                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 793                         continue;
 794                 /* Get the TC for given priority */
 795                 tc = dcb_cfg->etscfg.prioritytable[i];
 796                 xoff[tc] = true;
 797         }
 798
 799         /* Clear the __I40E_HANG_CHECK_ARMED bit for Tx rings */
 800         for (v = 0; v < pf->num_alloc_vsi; v++) {
 801                 struct i40e_vsi *vsi = pf->vsi[v];
 802
 803                 if (!vsi || !vsi->tx_rings[0])
 804                         continue;
 805
 806                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 807                         struct i40e_ring *ring = vsi->tx_rings[i];
 808
 809                         tc = ring->dcb_tc;
 810                         if (xoff[tc])
 811                                 clear_bit(__I40E_HANG_CHECK_ARMED,
 812                                           &ring->state);
 813                 }
 814         }
 815 }
 816
 817 /**
 818  * i40e_update_vsi_stats - Update the vsi statistics counters.
 819  * @vsi: the VSI to be updated
 820  *
 821  * There are a few instances where we store the same stat in a
 822  * couple of different structs.  This is partly because we have
 823  * the netdev stats that need to be filled out, which is slightly
 824  * different from the "eth_stats" defined by the chip and used in
 825  * VF communications.  We sort it out here.
 826  **/
 827 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 828 {
 829         struct i40e_pf *pf = vsi->back;
 830         struct rtnl_link_stats64 *ons;
 831         struct rtnl_link_stats64 *ns;   /* netdev stats */
 832         struct i40e_eth_stats *oes;
 833         struct i40e_eth_stats *es;     /* device's eth stats */
 834         u32 tx_restart, tx_busy;
 835         struct i40e_ring *p;
 836         u32 rx_page, rx_buf;
 837         u64 bytes, packets;
 838         unsigned int start;
 839         u64 rx_p, rx_b;
 840         u64 tx_p, tx_b;
 841         u16 q;
 842
 843         if (test_bit(__I40E_DOWN, &vsi->state) ||
 844             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 845                 return;
 846
 847         ns = i40e_get_vsi_stats_struct(vsi);
 848         ons = &vsi->net_stats_offsets;
 849         es = &vsi->eth_stats;
 850         oes = &vsi->eth_stats_offsets;
 851
 852         /* Gather up the netdev and vsi stats that the driver collects
 853          * on the fly during packet processing
 854          */
 855         rx_b = rx_p = 0;
 856         tx_b = tx_p = 0;
 857         tx_restart = tx_busy = 0;
 858         rx_page = 0;
 859         rx_buf = 0;
 860         rcu_read_lock();
 861         for (q = 0; q < vsi->num_queue_pairs; q++) {
 862                 /* locate Tx ring */
 863                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 864
 865                 do {
 866                         start = u64_stats_fetch_begin_irq(&p->syncp);
 867                         packets = p->stats.packets;
 868                         bytes = p->stats.bytes;
 869                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 870                 tx_b += bytes;
 871                 tx_p += packets;
 872                 tx_restart += p->tx_stats.restart_queue;
 873                 tx_busy += p->tx_stats.tx_busy;
 874
 875                 /* Rx queue is part of the same block as Tx queue */
 876                 p = &p[1];
 877                 do {
 878                         start = u64_stats_fetch_begin_irq(&p->syncp);
 879                         packets = p->stats.packets;
 880                         bytes = p->stats.bytes;
 881                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 882                 rx_b += bytes;
 883                 rx_p += packets;
 884                 rx_buf += p->rx_stats.alloc_buff_failed;
 885                 rx_page += p->rx_stats.alloc_page_failed;
 886         }
 887         rcu_read_unlock();
 888         vsi->tx_restart = tx_restart;
 889         vsi->tx_busy = tx_busy;
 890         vsi->rx_page_failed = rx_page;
 891         vsi->rx_buf_failed = rx_buf;
 892
 893         ns->rx_packets = rx_p;
 894         ns->rx_bytes = rx_b;
 895         ns->tx_packets = tx_p;
 896         ns->tx_bytes = tx_b;
 897
 898         /* update netdev stats from eth stats */
 899         i40e_update_eth_stats(vsi);
 900         ons->tx_errors = oes->tx_errors;
 901         ns->tx_errors = es->tx_errors;
 902         ons->multicast = oes->rx_multicast;
 903         ns->multicast = es->rx_multicast;
 904         ons->rx_dropped = oes->rx_discards;
 905         ns->rx_dropped = es->rx_discards;
 906         ons->tx_dropped = oes->tx_discards;
 907         ns->tx_dropped = es->tx_discards;
 908
 909         /* pull in a couple PF stats if this is the main vsi */
 910         if (vsi == pf->vsi[pf->lan_vsi]) {
 911                 ns->rx_crc_errors = pf->stats.crc_errors;
 912                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 913                 ns->rx_length_errors = pf->stats.rx_length_errors;
 914         }
 915 }
 916
 917 /**
 918  * i40e_update_pf_stats - Update the PF statistics counters.
 919  * @pf: the PF to be updated
 920  **/
 921 static void i40e_update_pf_stats(struct i40e_pf *pf)
 922 {
 923         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 924         struct i40e_hw_port_stats *nsd = &pf->stats;
 925         struct i40e_hw *hw = &pf->hw;
 926         u32 val;
 927         int i;
 928
 929         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 930                            I40E_GLPRT_GORCL(hw->port),
 931                            pf->stat_offsets_loaded,
 932                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 933         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 934                            I40E_GLPRT_GOTCL(hw->port),
 935                            pf->stat_offsets_loaded,
 936                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 937         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 938                            pf->stat_offsets_loaded,
 939                            &osd->eth.rx_discards,
 940                            &nsd->eth.rx_discards);
 941         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 942                            I40E_GLPRT_UPRCL(hw->port),
 943                            pf->stat_offsets_loaded,
 944                            &osd->eth.rx_unicast,
 945                            &nsd->eth.rx_unicast);
 946         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 947                            I40E_GLPRT_MPRCL(hw->port),
 948                            pf->stat_offsets_loaded,
 949                            &osd->eth.rx_multicast,
 950                            &nsd->eth.rx_multicast);
 951         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 952                            I40E_GLPRT_BPRCL(hw->port),
 953                            pf->stat_offsets_loaded,
 954                            &osd->eth.rx_broadcast,
 955                            &nsd->eth.rx_broadcast);
 956         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 957                            I40E_GLPRT_UPTCL(hw->port),
 958                            pf->stat_offsets_loaded,
 959                            &osd->eth.tx_unicast,
 960                            &nsd->eth.tx_unicast);
 961         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 962                            I40E_GLPRT_MPTCL(hw->port),
 963                            pf->stat_offsets_loaded,
 964                            &osd->eth.tx_multicast,
 965                            &nsd->eth.tx_multicast);
 966         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 967                            I40E_GLPRT_BPTCL(hw->port),
 968                            pf->stat_offsets_loaded,
 969                            &osd->eth.tx_broadcast,
 970                            &nsd->eth.tx_broadcast);
 971
 972         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 973                            pf->stat_offsets_loaded,
 974                            &osd->tx_dropped_link_down,
 975                            &nsd->tx_dropped_link_down);
 976
 977         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 978                            pf->stat_offsets_loaded,
 979                            &osd->crc_errors, &nsd->crc_errors);
 980
 981         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 982                            pf->stat_offsets_loaded,
 983                            &osd->illegal_bytes, &nsd->illegal_bytes);
 984
 985         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 986                            pf->stat_offsets_loaded,
 987                            &osd->mac_local_faults,
 988                            &nsd->mac_local_faults);
 989         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 990                            pf->stat_offsets_loaded,
 991                            &osd->mac_remote_faults,
 992                            &nsd->mac_remote_faults);
 993
 994         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 995                            pf->stat_offsets_loaded,
 996                            &osd->rx_length_errors,
 997                            &nsd->rx_length_errors);
 998
 999         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
1000                            pf->stat_offsets_loaded,
1001                            &osd->link_xon_rx, &nsd->link_xon_rx);
1002         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
1003                            pf->stat_offsets_loaded,
1004                            &osd->link_xon_tx, &nsd->link_xon_tx);
1005         i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
1006         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
1007                            pf->stat_offsets_loaded,
1008                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
1009
1010         for (i = 0; i < 8; i++) {
1011                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
1012                                    pf->stat_offsets_loaded,
1013                                    &osd->priority_xon_rx[i],
1014                                    &nsd->priority_xon_rx[i]);
1015                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1016                                    pf->stat_offsets_loaded,
1017                                    &osd->priority_xon_tx[i],
1018                                    &nsd->priority_xon_tx[i]);
1019                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1020                                    pf->stat_offsets_loaded,
1021                                    &osd->priority_xoff_tx[i],
1022                                    &nsd->priority_xoff_tx[i]);
1023                 i40e_stat_update32(hw,
1024                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1025                                    pf->stat_offsets_loaded,
1026                                    &osd->priority_xon_2_xoff[i],
1027                                    &nsd->priority_xon_2_xoff[i]);
1028         }
1029
1030         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1031                            I40E_GLPRT_PRC64L(hw->port),
1032                            pf->stat_offsets_loaded,
1033                            &osd->rx_size_64, &nsd->rx_size_64);
1034         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1035                            I40E_GLPRT_PRC127L(hw->port),
1036                            pf->stat_offsets_loaded,
1037                            &osd->rx_size_127, &nsd->rx_size_127);
1038         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1039                            I40E_GLPRT_PRC255L(hw->port),
1040                            pf->stat_offsets_loaded,
1041                            &osd->rx_size_255, &nsd->rx_size_255);
1042         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1043                            I40E_GLPRT_PRC511L(hw->port),
1044                            pf->stat_offsets_loaded,
1045                            &osd->rx_size_511, &nsd->rx_size_511);
1046         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1047                            I40E_GLPRT_PRC1023L(hw->port),
1048                            pf->stat_offsets_loaded,
1049                            &osd->rx_size_1023, &nsd->rx_size_1023);
1050         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1051                            I40E_GLPRT_PRC1522L(hw->port),
1052                            pf->stat_offsets_loaded,
1053                            &osd->rx_size_1522, &nsd->rx_size_1522);
1054         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1055                            I40E_GLPRT_PRC9522L(hw->port),
1056                            pf->stat_offsets_loaded,
1057                            &osd->rx_size_big, &nsd->rx_size_big);
1058
1059         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1060                            I40E_GLPRT_PTC64L(hw->port),
1061                            pf->stat_offsets_loaded,
1062                            &osd->tx_size_64, &nsd->tx_size_64);
1063         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1064                            I40E_GLPRT_PTC127L(hw->port),
1065                            pf->stat_offsets_loaded,
1066                            &osd->tx_size_127, &nsd->tx_size_127);
1067         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1068                            I40E_GLPRT_PTC255L(hw->port),
1069                            pf->stat_offsets_loaded,
1070                            &osd->tx_size_255, &nsd->tx_size_255);
1071         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1072                            I40E_GLPRT_PTC511L(hw->port),
1073                            pf->stat_offsets_loaded,
1074                            &osd->tx_size_511, &nsd->tx_size_511);
1075         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1076                            I40E_GLPRT_PTC1023L(hw->port),
1077                            pf->stat_offsets_loaded,
1078                            &osd->tx_size_1023, &nsd->tx_size_1023);
1079         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1080                            I40E_GLPRT_PTC1522L(hw->port),
1081                            pf->stat_offsets_loaded,
1082                            &osd->tx_size_1522, &nsd->tx_size_1522);
1083         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1084                            I40E_GLPRT_PTC9522L(hw->port),
1085                            pf->stat_offsets_loaded,
1086                            &osd->tx_size_big, &nsd->tx_size_big);
1087
1088         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1089                            pf->stat_offsets_loaded,
1090                            &osd->rx_undersize, &nsd->rx_undersize);
1091         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1092                            pf->stat_offsets_loaded,
1093                            &osd->rx_fragments, &nsd->rx_fragments);
1094         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1095                            pf->stat_offsets_loaded,
1096                            &osd->rx_oversize, &nsd->rx_oversize);
1097         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1098                            pf->stat_offsets_loaded,
1099                            &osd->rx_jabber, &nsd->rx_jabber);
1100
1101         /* FDIR stats */
1102         i40e_stat_update32(hw,
1103                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1104                            pf->stat_offsets_loaded,
1105                            &osd->fd_atr_match, &nsd->fd_atr_match);
1106         i40e_stat_update32(hw,
1107                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1108                            pf->stat_offsets_loaded,
1109                            &osd->fd_sb_match, &nsd->fd_sb_match);
1110         i40e_stat_update32(hw,
1111                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1112                       pf->stat_offsets_loaded,
1113                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1114
1115         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1116         nsd->tx_lpi_status =
1117                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1118                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1119         nsd->rx_lpi_status =
1120                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1121                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1122         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1123                            pf->stat_offsets_loaded,
1124                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1125         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1126                            pf->stat_offsets_loaded,
1127                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1128
1129         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1130             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1131                 nsd->fd_sb_status = true;
1132         else
1133                 nsd->fd_sb_status = false;
1134
1135         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1136             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1137                 nsd->fd_atr_status = true;
1138         else
1139                 nsd->fd_atr_status = false;
1140
1141         pf->stat_offsets_loaded = true;
1142 }
1143
1144 /**
1145  * i40e_update_stats - Update the various statistics counters.
1146  * @vsi: the VSI to be updated
1147  *
1148  * Update the various stats for this VSI and its related entities.
1149  **/
1150 void i40e_update_stats(struct i40e_vsi *vsi)
1151 {
1152         struct i40e_pf *pf = vsi->back;
1153
1154         if (vsi == pf->vsi[pf->lan_vsi])
1155                 i40e_update_pf_stats(pf);
1156
1157         i40e_update_vsi_stats(vsi);
1158 #ifdef I40E_FCOE
1159         i40e_update_fcoe_stats(vsi);
1160 #endif
1161 }
1162
1163 /**
1164  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1165  * @vsi: the VSI to be searched
1166  * @macaddr: the MAC address
1167  * @vlan: the vlan
1168  * @is_vf: make sure its a VF filter, else doesn't matter
1169  * @is_netdev: make sure its a netdev filter, else doesn't matter
1170  *
1171  * Returns ptr to the filter object or NULL
1172  **/
1173 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1174                                                 u8 *macaddr, s16 vlan,
1175                                                 bool is_vf, bool is_netdev)
1176 {
1177         struct i40e_mac_filter *f;
1178
1179         if (!vsi || !macaddr)
1180                 return NULL;
1181
1182         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1183                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1184                     (vlan == f->vlan)    &&
1185                     (!is_vf || f->is_vf) &&
1186                     (!is_netdev || f->is_netdev))
1187                         return f;
1188         }
1189         return NULL;
1190 }
1191
1192 /**
1193  * i40e_find_mac - Find a mac addr in the macvlan filters list
1194  * @vsi: the VSI to be searched
1195  * @macaddr: the MAC address we are searching for
1196  * @is_vf: make sure its a VF filter, else doesn't matter
1197  * @is_netdev: make sure its a netdev filter, else doesn't matter
1198  *
1199  * Returns the first filter with the provided MAC address or NULL if
1200  * MAC address was not found
1201  **/
1202 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1203                                       bool is_vf, bool is_netdev)
1204 {
1205         struct i40e_mac_filter *f;
1206
1207         if (!vsi || !macaddr)
1208                 return NULL;
1209
1210         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1211                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1212                     (!is_vf || f->is_vf) &&
1213                     (!is_netdev || f->is_netdev))
1214                         return f;
1215         }
1216         return NULL;
1217 }
1218
1219 /**
1220  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1221  * @vsi: the VSI to be searched
1222  *
1223  * Returns true if VSI is in vlan mode or false otherwise
1224  **/
1225 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1226 {
1227         struct i40e_mac_filter *f;
1228
1229         /* Only -1 for all the filters denotes not in vlan mode
1230          * so we have to go through all the list in order to make sure
1231          */
1232         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1233                 if (f->vlan >= 0)
1234                         return true;
1235         }
1236
1237         return false;
1238 }
1239
1240 /**
1241  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1242  * @vsi: the VSI to be searched
1243  * @macaddr: the mac address to be filtered
1244  * @is_vf: true if it is a VF
1245  * @is_netdev: true if it is a netdev
1246  *
1247  * Goes through all the macvlan filters and adds a
1248  * macvlan filter for each unique vlan that already exists
1249  *
1250  * Returns first filter found on success, else NULL
1251  **/
1252 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1253                                              bool is_vf, bool is_netdev)
1254 {
1255         struct i40e_mac_filter *f;
1256
1257         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1258                 if (vsi->info.pvid)
1259                         f->vlan = le16_to_cpu(vsi->info.pvid);
1260                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1261                                       is_vf, is_netdev)) {
1262                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1263                                              is_vf, is_netdev))
1264                                 return NULL;
1265                 }
1266         }
1267
1268         return list_first_entry_or_null(&vsi->mac_filter_list,
1269                                         struct i40e_mac_filter, list);
1270 }
1271
1272 /**
1273  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1274  * @vsi: the PF Main VSI - inappropriate for any other VSI
1275  * @macaddr: the MAC address
1276  *
1277  * Some older firmware configurations set up a default promiscuous VLAN
1278  * filter that needs to be removed.
1279  **/
1280 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1281 {
1282         struct i40e_aqc_remove_macvlan_element_data element;
1283         struct i40e_pf *pf = vsi->back;
1284         i40e_status ret;
1285
1286         /* Only appropriate for the PF main VSI */
1287         if (vsi->type != I40E_VSI_MAIN)
1288                 return -EINVAL;
1289
1290         memset(&element, 0, sizeof(element));
1291         ether_addr_copy(element.mac_addr, macaddr);
1292         element.vlan_tag = 0;
1293         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1294                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1295         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1296         if (ret)
1297                 return -ENOENT;
1298
1299         return 0;
1300 }
1301
1302 /**
1303  * i40e_add_filter - Add a mac/vlan filter to the VSI
1304  * @vsi: the VSI to be searched
1305  * @macaddr: the MAC address
1306  * @vlan: the vlan
1307  * @is_vf: make sure its a VF filter, else doesn't matter
1308  * @is_netdev: make sure its a netdev filter, else doesn't matter
1309  *
1310  * Returns ptr to the filter object or NULL when no memory available.
1311  **/
1312 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1313                                         u8 *macaddr, s16 vlan,
1314                                         bool is_vf, bool is_netdev)
1315 {
1316         struct i40e_mac_filter *f;
1317
1318         if (!vsi || !macaddr)
1319                 return NULL;
1320
1321         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1322         if (!f) {
1323                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1324                 if (!f)
1325                         goto add_filter_out;
1326
1327                 ether_addr_copy(f->macaddr, macaddr);
1328                 f->vlan = vlan;
1329                 f->changed = true;
1330
1331                 INIT_LIST_HEAD(&f->list);
1332                 list_add(&f->list, &vsi->mac_filter_list);
1333         }
1334
1335         /* increment counter and add a new flag if needed */
1336         if (is_vf) {
1337                 if (!f->is_vf) {
1338                         f->is_vf = true;
1339                         f->counter++;
1340                 }
1341         } else if (is_netdev) {
1342                 if (!f->is_netdev) {
1343                         f->is_netdev = true;
1344                         f->counter++;
1345                 }
1346         } else {
1347                 f->counter++;
1348         }
1349
1350         /* changed tells sync_filters_subtask to
1351          * push the filter down to the firmware
1352          */
1353         if (f->changed) {
1354                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1355                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1356         }
1357
1358 add_filter_out:
1359         return f;
1360 }
1361
1362 /**
1363  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1364  * @vsi: the VSI to be searched
1365  * @macaddr: the MAC address
1366  * @vlan: the vlan
1367  * @is_vf: make sure it's a VF filter, else doesn't matter
1368  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1369  **/
1370 void i40e_del_filter(struct i40e_vsi *vsi,
1371                      u8 *macaddr, s16 vlan,
1372                      bool is_vf, bool is_netdev)
1373 {
1374         struct i40e_mac_filter *f;
1375
1376         if (!vsi || !macaddr)
1377                 return;
1378
1379         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1380         if (!f || f->counter == 0)
1381                 return;
1382
1383         if (is_vf) {
1384                 if (f->is_vf) {
1385                         f->is_vf = false;
1386                         f->counter--;
1387                 }
1388         } else if (is_netdev) {
1389                 if (f->is_netdev) {
1390                         f->is_netdev = false;
1391                         f->counter--;
1392                 }
1393         } else {
1394                 /* make sure we don't remove a filter in use by VF or netdev */
1395                 int min_f = 0;
1396                 min_f += (f->is_vf ? 1 : 0);
1397                 min_f += (f->is_netdev ? 1 : 0);
1398
1399                 if (f->counter > min_f)
1400                         f->counter--;
1401         }
1402
1403         /* counter == 0 tells sync_filters_subtask to
1404          * remove the filter from the firmware's list
1405          */
1406         if (f->counter == 0) {
1407                 f->changed = true;
1408                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1409                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1410         }
1411 }
1412
1413 /**
1414  * i40e_set_mac - NDO callback to set mac address
1415  * @netdev: network interface device structure
1416  * @p: pointer to an address structure
1417  *
1418  * Returns 0 on success, negative on failure
1419  **/
1420 #ifdef I40E_FCOE
1421 int i40e_set_mac(struct net_device *netdev, void *p)
1422 #else
1423 static int i40e_set_mac(struct net_device *netdev, void *p)
1424 #endif
1425 {
1426         struct i40e_netdev_priv *np = netdev_priv(netdev);
1427         struct i40e_vsi *vsi = np->vsi;
1428         struct i40e_pf *pf = vsi->back;
1429         struct i40e_hw *hw = &pf->hw;
1430         struct sockaddr *addr = p;
1431         struct i40e_mac_filter *f;
1432
1433         if (!is_valid_ether_addr(addr->sa_data))
1434                 return -EADDRNOTAVAIL;
1435
1436         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1437                 netdev_info(netdev, "already using mac address %pM\n",
1438                             addr->sa_data);
1439                 return 0;
1440         }
1441
1442         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1443             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1444                 return -EADDRNOTAVAIL;
1445
1446         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1447                 netdev_info(netdev, "returning to hw mac address %pM\n",
1448                             hw->mac.addr);
1449         else
1450                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1451
1452         if (vsi->type == I40E_VSI_MAIN) {
1453                 i40e_status ret;
1454                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1455                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1456                                                 addr->sa_data, NULL);
1457                 if (ret) {
1458                         netdev_info(netdev,
1459                                     "Addr change for Main VSI failed: %d\n",
1460                                     ret);
1461                         return -EADDRNOTAVAIL;
1462                 }
1463         }
1464
1465         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1466                 struct i40e_aqc_remove_macvlan_element_data element;
1467
1468                 memset(&element, 0, sizeof(element));
1469                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1470                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1471                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1472         } else {
1473                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1474                                 false, false);
1475         }
1476
1477         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1478                 struct i40e_aqc_add_macvlan_element_data element;
1479
1480                 memset(&element, 0, sizeof(element));
1481                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1482                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1483                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1484         } else {
1485                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1486                                     false, false);
1487                 if (f)
1488                         f->is_laa = true;
1489         }
1490
1491         i40e_sync_vsi_filters(vsi);
1492         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1493
1494         return 0;
1495 }
1496
1497 /**
1498  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1499  * @vsi: the VSI being setup
1500  * @ctxt: VSI context structure
1501  * @enabled_tc: Enabled TCs bitmap
1502  * @is_add: True if called before Add VSI
1503  *
1504  * Setup VSI queue mapping for enabled traffic classes.
1505  **/
1506 #ifdef I40E_FCOE
1507 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1508                               struct i40e_vsi_context *ctxt,
1509                               u8 enabled_tc,
1510                               bool is_add)
1511 #else
1512 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1513                                      struct i40e_vsi_context *ctxt,
1514                                      u8 enabled_tc,
1515                                      bool is_add)
1516 #endif
1517 {
1518         struct i40e_pf *pf = vsi->back;
1519         u16 sections = 0;
1520         u8 netdev_tc = 0;
1521         u16 numtc = 0;
1522         u16 qcount;
1523         u8 offset;
1524         u16 qmap;
1525         int i;
1526         u16 num_tc_qps = 0;
1527
1528         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1529         offset = 0;
1530
1531         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1532                 /* Find numtc from enabled TC bitmap */
1533                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1534                         if (enabled_tc & BIT_ULL(i)) /* TC is enabled */
1535                                 numtc++;
1536                 }
1537                 if (!numtc) {
1538                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1539                         numtc = 1;
1540                 }
1541         } else {
1542                 /* At least TC0 is enabled in case of non-DCB case */
1543                 numtc = 1;
1544         }
1545
1546         vsi->tc_config.numtc = numtc;
1547         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1548         /* Number of queues per enabled TC */
1549         /* In MFP case we can have a much lower count of MSIx
1550          * vectors available and so we need to lower the used
1551          * q count.
1552          */
1553         qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
1554         num_tc_qps = qcount / numtc;
1555         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1556
1557         /* Setup queue offset/count for all TCs for given VSI */
1558         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1559                 /* See if the given TC is enabled for the given VSI */
1560                 if (vsi->tc_config.enabled_tc & BIT_ULL(i)) {
1561                         /* TC is enabled */
1562                         int pow, num_qps;
1563
1564                         switch (vsi->type) {
1565                         case I40E_VSI_MAIN:
1566                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1567                                 break;
1568 #ifdef I40E_FCOE
1569                         case I40E_VSI_FCOE:
1570                                 qcount = num_tc_qps;
1571                                 break;
1572 #endif
1573                         case I40E_VSI_FDIR:
1574                         case I40E_VSI_SRIOV:
1575                         case I40E_VSI_VMDQ2:
1576                         default:
1577                                 qcount = num_tc_qps;
1578                                 WARN_ON(i != 0);
1579                                 break;
1580                         }
1581                         vsi->tc_config.tc_info[i].qoffset = offset;
1582                         vsi->tc_config.tc_info[i].qcount = qcount;
1583
1584                         /* find the next higher power-of-2 of num queue pairs */
1585                         num_qps = qcount;
1586                         pow = 0;
1587                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1588                                 pow++;
1589                                 num_qps >>= 1;
1590                         }
1591
1592                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1593                         qmap =
1594                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1595                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1596
1597                         offset += qcount;
1598                 } else {
1599                         /* TC is not enabled so set the offset to
1600                          * default queue and allocate one queue
1601                          * for the given TC.
1602                          */
1603                         vsi->tc_config.tc_info[i].qoffset = 0;
1604                         vsi->tc_config.tc_info[i].qcount = 1;
1605                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1606
1607                         qmap = 0;
1608                 }
1609                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1610         }
1611
1612         /* Set actual Tx/Rx queue pairs */
1613         vsi->num_queue_pairs = offset;
1614         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1615                 if (vsi->req_queue_pairs > 0)
1616                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1617                 else
1618                         vsi->num_queue_pairs = pf->num_lan_msix;
1619         }
1620
1621         /* Scheduler section valid can only be set for ADD VSI */
1622         if (is_add) {
1623                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1624
1625                 ctxt->info.up_enable_bits = enabled_tc;
1626         }
1627         if (vsi->type == I40E_VSI_SRIOV) {
1628                 ctxt->info.mapping_flags |=
1629                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1630                 for (i = 0; i < vsi->num_queue_pairs; i++)
1631                         ctxt->info.queue_mapping[i] =
1632                                                cpu_to_le16(vsi->base_queue + i);
1633         } else {
1634                 ctxt->info.mapping_flags |=
1635                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1636                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1637         }
1638         ctxt->info.valid_sections |= cpu_to_le16(sections);
1639 }
1640
1641 /**
1642  * i40e_set_rx_mode - NDO callback to set the netdev filters
1643  * @netdev: network interface device structure
1644  **/
1645 #ifdef I40E_FCOE
1646 void i40e_set_rx_mode(struct net_device *netdev)
1647 #else
1648 static void i40e_set_rx_mode(struct net_device *netdev)
1649 #endif
1650 {
1651         struct i40e_netdev_priv *np = netdev_priv(netdev);
1652         struct i40e_mac_filter *f, *ftmp;
1653         struct i40e_vsi *vsi = np->vsi;
1654         struct netdev_hw_addr *uca;
1655         struct netdev_hw_addr *mca;
1656         struct netdev_hw_addr *ha;
1657
1658         /* add addr if not already in the filter list */
1659         netdev_for_each_uc_addr(uca, netdev) {
1660                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1661                         if (i40e_is_vsi_in_vlan(vsi))
1662                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1663                                                      false, true);
1664                         else
1665                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1666                                                 false, true);
1667                 }
1668         }
1669
1670         netdev_for_each_mc_addr(mca, netdev) {
1671                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1672                         if (i40e_is_vsi_in_vlan(vsi))
1673                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1674                                                      false, true);
1675                         else
1676                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1677                                                 false, true);
1678                 }
1679         }
1680
1681         /* remove filter if not in netdev list */
1682         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1683                 bool found = false;
1684
1685                 if (!f->is_netdev)
1686                         continue;
1687
1688                 if (is_multicast_ether_addr(f->macaddr)) {
1689                         netdev_for_each_mc_addr(mca, netdev) {
1690                                 if (ether_addr_equal(mca->addr, f->macaddr)) {
1691                                         found = true;
1692                                         break;
1693                                 }
1694                         }
1695                 } else {
1696                         netdev_for_each_uc_addr(uca, netdev) {
1697                                 if (ether_addr_equal(uca->addr, f->macaddr)) {
1698                                         found = true;
1699                                         break;
1700                                 }
1701                         }
1702
1703                         for_each_dev_addr(netdev, ha) {
1704                                 if (ether_addr_equal(ha->addr, f->macaddr)) {
1705                                         found = true;
1706                                         break;
1707                                 }
1708                         }
1709                 }
1710                 if (!found)
1711                         i40e_del_filter(
1712                            vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1713         }
1714
1715         /* check for other flag changes */
1716         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1717                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1718                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1719         }
1720 }
1721
1722 /**
1723  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1724  * @vsi: ptr to the VSI
1725  *
1726  * Push any outstanding VSI filter changes through the AdminQ.
1727  *
1728  * Returns 0 or error value
1729  **/
1730 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1731 {
1732         struct i40e_mac_filter *f, *ftmp;
1733         bool promisc_forced_on = false;
1734         bool add_happened = false;
1735         int filter_list_len = 0;
1736         u32 changed_flags = 0;
1737         i40e_status ret = 0;
1738         struct i40e_pf *pf;
1739         int num_add = 0;
1740         int num_del = 0;
1741         int aq_err = 0;
1742         u16 cmd_flags;
1743
1744         /* empty array typed pointers, kcalloc later */
1745         struct i40e_aqc_add_macvlan_element_data *add_list;
1746         struct i40e_aqc_remove_macvlan_element_data *del_list;
1747
1748         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1749                 usleep_range(1000, 2000);
1750         pf = vsi->back;
1751
1752         if (vsi->netdev) {
1753                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1754                 vsi->current_netdev_flags = vsi->netdev->flags;
1755         }
1756
1757         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1758                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1759
1760                 filter_list_len = pf->hw.aq.asq_buf_size /
1761                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1762                 del_list = kcalloc(filter_list_len,
1763                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1764                             GFP_KERNEL);
1765                 if (!del_list)
1766                         return -ENOMEM;
1767
1768                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1769                         if (!f->changed)
1770                                 continue;
1771
1772                         if (f->counter != 0)
1773                                 continue;
1774                         f->changed = false;
1775                         cmd_flags = 0;
1776
1777                         /* add to delete list */
1778                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1779                         del_list[num_del].vlan_tag =
1780                                 cpu_to_le16((u16)(f->vlan ==
1781                                             I40E_VLAN_ANY ? 0 : f->vlan));
1782
1783                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1784                         del_list[num_del].flags = cmd_flags;
1785                         num_del++;
1786
1787                         /* unlink from filter list */
1788                         list_del(&f->list);
1789                         kfree(f);
1790
1791                         /* flush a full buffer */
1792                         if (num_del == filter_list_len) {
1793                                 ret = i40e_aq_remove_macvlan(&pf->hw,
1794                                                   vsi->seid, del_list, num_del,
1795                                                   NULL);
1796                                 aq_err = pf->hw.aq.asq_last_status;
1797                                 num_del = 0;
1798                                 memset(del_list, 0, sizeof(*del_list));
1799
1800                                 if (ret && aq_err != I40E_AQ_RC_ENOENT)
1801                                         dev_info(&pf->pdev->dev,
1802                                                  "ignoring delete macvlan error, err %s, aq_err %s while flushing a full buffer\n",
1803                                                  i40e_stat_str(&pf->hw, ret),
1804                                                  i40e_aq_str(&pf->hw, aq_err));
1805                         }
1806                 }
1807                 if (num_del) {
1808                         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1809                                                      del_list, num_del, NULL);
1810                         aq_err = pf->hw.aq.asq_last_status;
1811                         num_del = 0;
1812
1813                         if (ret && aq_err != I40E_AQ_RC_ENOENT)
1814                                 dev_info(&pf->pdev->dev,
1815                                          "ignoring delete macvlan error, err %s aq_err %s\n",
1816                                          i40e_stat_str(&pf->hw, ret),
1817                                          i40e_aq_str(&pf->hw, aq_err));
1818                 }
1819
1820                 kfree(del_list);
1821                 del_list = NULL;
1822
1823                 /* do all the adds now */
1824                 filter_list_len = pf->hw.aq.asq_buf_size /
1825                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1826                 add_list = kcalloc(filter_list_len,
1827                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1828                                GFP_KERNEL);
1829                 if (!add_list)
1830                         return -ENOMEM;
1831
1832                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1833                         if (!f->changed)
1834                                 continue;
1835
1836                         if (f->counter == 0)
1837                                 continue;
1838                         f->changed = false;
1839                         add_happened = true;
1840                         cmd_flags = 0;
1841
1842                         /* add to add array */
1843                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
1844                         add_list[num_add].vlan_tag =
1845                                 cpu_to_le16(
1846                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1847                         add_list[num_add].queue_number = 0;
1848
1849                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1850                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1851                         num_add++;
1852
1853                         /* flush a full buffer */
1854                         if (num_add == filter_list_len) {
1855                                 ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1856                                                           add_list, num_add,
1857                                                           NULL);
1858                                 aq_err = pf->hw.aq.asq_last_status;
1859                                 num_add = 0;
1860
1861                                 if (ret)
1862                                         break;
1863                                 memset(add_list, 0, sizeof(*add_list));
1864                         }
1865                 }
1866                 if (num_add) {
1867                         ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1868                                                   add_list, num_add, NULL);
1869                         aq_err = pf->hw.aq.asq_last_status;
1870                         num_add = 0;
1871                 }
1872                 kfree(add_list);
1873                 add_list = NULL;
1874
1875                 if (add_happened && ret && aq_err != I40E_AQ_RC_EINVAL) {
1876                         dev_info(&pf->pdev->dev,
1877                                  "add filter failed, err %s aq_err %s\n",
1878                                  i40e_stat_str(&pf->hw, ret),
1879                                  i40e_aq_str(&pf->hw, aq_err));
1880                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1881                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1882                                       &vsi->state)) {
1883                                 promisc_forced_on = true;
1884                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1885                                         &vsi->state);
1886                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1887                         }
1888                 }
1889         }
1890
1891         /* check for changes in promiscuous modes */
1892         if (changed_flags & IFF_ALLMULTI) {
1893                 bool cur_multipromisc;
1894                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1895                 ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1896                                                             vsi->seid,
1897                                                             cur_multipromisc,
1898                                                             NULL);
1899                 if (ret)
1900                         dev_info(&pf->pdev->dev,
1901                                  "set multi promisc failed, err %s aq_err %s\n",
1902                                  i40e_stat_str(&pf->hw, ret),
1903                                  i40e_aq_str(&pf->hw,
1904                                              pf->hw.aq.asq_last_status));
1905         }
1906         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1907                 bool cur_promisc;
1908                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1909                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1910                                         &vsi->state));
1911                 ret = i40e_aq_set_vsi_unicast_promiscuous(&vsi->back->hw,
1912                                                           vsi->seid,
1913                                                           cur_promisc, NULL);
1914                 if (ret)
1915                         dev_info(&pf->pdev->dev,
1916                                  "set uni promisc failed, err %s, aq_err %s\n",
1917                                  i40e_stat_str(&pf->hw, ret),
1918                                  i40e_aq_str(&pf->hw,
1919                                              pf->hw.aq.asq_last_status));
1920                 ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1921                                                 vsi->seid,
1922                                                 cur_promisc, NULL);
1923                 if (ret)
1924                         dev_info(&pf->pdev->dev,
1925                                  "set brdcast promisc failed, err %s, aq_err %s\n",
1926                                  i40e_stat_str(&pf->hw, ret),
1927                                  i40e_aq_str(&pf->hw,
1928                                              pf->hw.aq.asq_last_status));
1929         }
1930
1931         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
1932         return 0;
1933 }
1934
1935 /**
1936  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
1937  * @pf: board private structure
1938  **/
1939 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
1940 {
1941         int v;
1942
1943         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
1944                 return;
1945         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
1946
1947         for (v = 0; v < pf->num_alloc_vsi; v++) {
1948                 if (pf->vsi[v] &&
1949                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
1950                         i40e_sync_vsi_filters(pf->vsi[v]);
1951         }
1952 }
1953
1954 /**
1955  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
1956  * @netdev: network interface device structure
1957  * @new_mtu: new value for maximum frame size
1958  *
1959  * Returns 0 on success, negative on failure
1960  **/
1961 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
1962 {
1963         struct i40e_netdev_priv *np = netdev_priv(netdev);
1964         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1965         struct i40e_vsi *vsi = np->vsi;
1966
1967         /* MTU < 68 is an error and causes problems on some kernels */
1968         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
1969                 return -EINVAL;
1970
1971         netdev_info(netdev, "changing MTU from %d to %d\n",
1972                     netdev->mtu, new_mtu);
1973         netdev->mtu = new_mtu;
1974         if (netif_running(netdev))
1975                 i40e_vsi_reinit_locked(vsi);
1976
1977         return 0;
1978 }
1979
1980 /**
1981  * i40e_ioctl - Access the hwtstamp interface
1982  * @netdev: network interface device structure
1983  * @ifr: interface request data
1984  * @cmd: ioctl command
1985  **/
1986 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1987 {
1988         struct i40e_netdev_priv *np = netdev_priv(netdev);
1989         struct i40e_pf *pf = np->vsi->back;
1990
1991         switch (cmd) {
1992         case SIOCGHWTSTAMP:
1993                 return i40e_ptp_get_ts_config(pf, ifr);
1994         case SIOCSHWTSTAMP:
1995                 return i40e_ptp_set_ts_config(pf, ifr);
1996         default:
1997                 return -EOPNOTSUPP;
1998         }
1999 }
2000
2001 /**
2002  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2003  * @vsi: the vsi being adjusted
2004  **/
2005 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2006 {
2007         struct i40e_vsi_context ctxt;
2008         i40e_status ret;
2009
2010         if ((vsi->info.valid_sections &
2011              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2012             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2013                 return;  /* already enabled */
2014
2015         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2016         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2017                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2018
2019         ctxt.seid = vsi->seid;
2020         ctxt.info = vsi->info;
2021         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2022         if (ret) {
2023                 dev_info(&vsi->back->pdev->dev,
2024                          "update vlan stripping failed, err %s aq_err %s\n",
2025                          i40e_stat_str(&vsi->back->hw, ret),
2026                          i40e_aq_str(&vsi->back->hw,
2027                                      vsi->back->hw.aq.asq_last_status));
2028         }
2029 }
2030
2031 /**
2032  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2033  * @vsi: the vsi being adjusted
2034  **/
2035 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2036 {
2037         struct i40e_vsi_context ctxt;
2038         i40e_status ret;
2039
2040         if ((vsi->info.valid_sections &
2041              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2042             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2043              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2044                 return;  /* already disabled */
2045
2046         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2047         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2048                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2049
2050         ctxt.seid = vsi->seid;
2051         ctxt.info = vsi->info;
2052         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2053         if (ret) {
2054                 dev_info(&vsi->back->pdev->dev,
2055                          "update vlan stripping failed, err %s aq_err %s\n",
2056                          i40e_stat_str(&vsi->back->hw, ret),
2057                          i40e_aq_str(&vsi->back->hw,
2058                                      vsi->back->hw.aq.asq_last_status));
2059         }
2060 }
2061
2062 /**
2063  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2064  * @netdev: network interface to be adjusted
2065  * @features: netdev features to test if VLAN offload is enabled or not
2066  **/
2067 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2068 {
2069         struct i40e_netdev_priv *np = netdev_priv(netdev);
2070         struct i40e_vsi *vsi = np->vsi;
2071
2072         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2073                 i40e_vlan_stripping_enable(vsi);
2074         else
2075                 i40e_vlan_stripping_disable(vsi);
2076 }
2077
2078 /**
2079  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2080  * @vsi: the vsi being configured
2081  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2082  **/
2083 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2084 {
2085         struct i40e_mac_filter *f, *add_f;
2086         bool is_netdev, is_vf;
2087
2088         is_vf = (vsi->type == I40E_VSI_SRIOV);
2089         is_netdev = !!(vsi->netdev);
2090
2091         if (is_netdev) {
2092                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2093                                         is_vf, is_netdev);
2094                 if (!add_f) {
2095                         dev_info(&vsi->back->pdev->dev,
2096                                  "Could not add vlan filter %d for %pM\n",
2097                                  vid, vsi->netdev->dev_addr);
2098                         return -ENOMEM;
2099                 }
2100         }
2101
2102         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2103                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2104                 if (!add_f) {
2105                         dev_info(&vsi->back->pdev->dev,
2106                                  "Could not add vlan filter %d for %pM\n",
2107                                  vid, f->macaddr);
2108                         return -ENOMEM;
2109                 }
2110         }
2111
2112         /* Now if we add a vlan tag, make sure to check if it is the first
2113          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2114          * with 0, so we now accept untagged and specified tagged traffic
2115          * (and not any taged and untagged)
2116          */
2117         if (vid > 0) {
2118                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2119                                                   I40E_VLAN_ANY,
2120                                                   is_vf, is_netdev)) {
2121                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2122                                         I40E_VLAN_ANY, is_vf, is_netdev);
2123                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2124                                                 is_vf, is_netdev);
2125                         if (!add_f) {
2126                                 dev_info(&vsi->back->pdev->dev,
2127                                          "Could not add filter 0 for %pM\n",
2128                                          vsi->netdev->dev_addr);
2129                                 return -ENOMEM;
2130                         }
2131                 }
2132         }
2133
2134         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2135         if (vid > 0 && !vsi->info.pvid) {
2136                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2137                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2138                                              is_vf, is_netdev)) {
2139                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2140                                                 is_vf, is_netdev);
2141                                 add_f = i40e_add_filter(vsi, f->macaddr,
2142                                                         0, is_vf, is_netdev);
2143                                 if (!add_f) {
2144                                         dev_info(&vsi->back->pdev->dev,
2145                                                  "Could not add filter 0 for %pM\n",
2146                                                  f->macaddr);
2147                                         return -ENOMEM;
2148                                 }
2149                         }
2150                 }
2151         }
2152
2153         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2154             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2155                 return 0;
2156
2157         return i40e_sync_vsi_filters(vsi);
2158 }
2159
2160 /**
2161  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2162  * @vsi: the vsi being configured
2163  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2164  *
2165  * Return: 0 on success or negative otherwise
2166  **/
2167 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2168 {
2169         struct net_device *netdev = vsi->netdev;
2170         struct i40e_mac_filter *f, *add_f;
2171         bool is_vf, is_netdev;
2172         int filter_count = 0;
2173
2174         is_vf = (vsi->type == I40E_VSI_SRIOV);
2175         is_netdev = !!(netdev);
2176
2177         if (is_netdev)
2178                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2179
2180         list_for_each_entry(f, &vsi->mac_filter_list, list)
2181                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2182
2183         /* go through all the filters for this VSI and if there is only
2184          * vid == 0 it means there are no other filters, so vid 0 must
2185          * be replaced with -1. This signifies that we should from now
2186          * on accept any traffic (with any tag present, or untagged)
2187          */
2188         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2189                 if (is_netdev) {
2190                         if (f->vlan &&
2191                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2192                                 filter_count++;
2193                 }
2194
2195                 if (f->vlan)
2196                         filter_count++;
2197         }
2198
2199         if (!filter_count && is_netdev) {
2200                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2201                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2202                                     is_vf, is_netdev);
2203                 if (!f) {
2204                         dev_info(&vsi->back->pdev->dev,
2205                                  "Could not add filter %d for %pM\n",
2206                                  I40E_VLAN_ANY, netdev->dev_addr);
2207                         return -ENOMEM;
2208                 }
2209         }
2210
2211         if (!filter_count) {
2212                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2213                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2214                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2215                                             is_vf, is_netdev);
2216                         if (!add_f) {
2217                                 dev_info(&vsi->back->pdev->dev,
2218                                          "Could not add filter %d for %pM\n",
2219                                          I40E_VLAN_ANY, f->macaddr);
2220                                 return -ENOMEM;
2221                         }
2222                 }
2223         }
2224
2225         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2226             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2227                 return 0;
2228
2229         return i40e_sync_vsi_filters(vsi);
2230 }
2231
2232 /**
2233  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2234  * @netdev: network interface to be adjusted
2235  * @vid: vlan id to be added
2236  *
2237  * net_device_ops implementation for adding vlan ids
2238  **/
2239 #ifdef I40E_FCOE
2240 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2241                          __always_unused __be16 proto, u16 vid)
2242 #else
2243 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2244                                 __always_unused __be16 proto, u16 vid)
2245 #endif
2246 {
2247         struct i40e_netdev_priv *np = netdev_priv(netdev);
2248         struct i40e_vsi *vsi = np->vsi;
2249         int ret = 0;
2250
2251         if (vid > 4095)
2252                 return -EINVAL;
2253
2254         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2255
2256         /* If the network stack called us with vid = 0 then
2257          * it is asking to receive priority tagged packets with
2258          * vlan id 0.  Our HW receives them by default when configured
2259          * to receive untagged packets so there is no need to add an
2260          * extra filter for vlan 0 tagged packets.
2261          */
2262         if (vid)
2263                 ret = i40e_vsi_add_vlan(vsi, vid);
2264
2265         if (!ret && (vid < VLAN_N_VID))
2266                 set_bit(vid, vsi->active_vlans);
2267
2268         return ret;
2269 }
2270
2271 /**
2272  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2273  * @netdev: network interface to be adjusted
2274  * @vid: vlan id to be removed
2275  *
2276  * net_device_ops implementation for removing vlan ids
2277  **/
2278 #ifdef I40E_FCOE
2279 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2280                           __always_unused __be16 proto, u16 vid)
2281 #else
2282 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2283                                  __always_unused __be16 proto, u16 vid)
2284 #endif
2285 {
2286         struct i40e_netdev_priv *np = netdev_priv(netdev);
2287         struct i40e_vsi *vsi = np->vsi;
2288
2289         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2290
2291         /* return code is ignored as there is nothing a user
2292          * can do about failure to remove and a log message was
2293          * already printed from the other function
2294          */
2295         i40e_vsi_kill_vlan(vsi, vid);
2296
2297         clear_bit(vid, vsi->active_vlans);
2298
2299         return 0;
2300 }
2301
2302 /**
2303  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2304  * @vsi: the vsi being brought back up
2305  **/
2306 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2307 {
2308         u16 vid;
2309
2310         if (!vsi->netdev)
2311                 return;
2312
2313         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2314
2315         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2316                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2317                                      vid);
2318 }
2319
2320 /**
2321  * i40e_vsi_add_pvid - Add pvid for the VSI
2322  * @vsi: the vsi being adjusted
2323  * @vid: the vlan id to set as a PVID
2324  **/
2325 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2326 {
2327         struct i40e_vsi_context ctxt;
2328         i40e_status ret;
2329
2330         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2331         vsi->info.pvid = cpu_to_le16(vid);
2332         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2333                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2334                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2335
2336         ctxt.seid = vsi->seid;
2337         ctxt.info = vsi->info;
2338         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2339         if (ret) {
2340                 dev_info(&vsi->back->pdev->dev,
2341                          "add pvid failed, err %s aq_err %s\n",
2342                          i40e_stat_str(&vsi->back->hw, ret),
2343                          i40e_aq_str(&vsi->back->hw,
2344                                      vsi->back->hw.aq.asq_last_status));
2345                 return -ENOENT;
2346         }
2347
2348         return 0;
2349 }
2350
2351 /**
2352  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2353  * @vsi: the vsi being adjusted
2354  *
2355  * Just use the vlan_rx_register() service to put it back to normal
2356  **/
2357 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2358 {
2359         i40e_vlan_stripping_disable(vsi);
2360
2361         vsi->info.pvid = 0;
2362 }
2363
2364 /**
2365  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2366  * @vsi: ptr to the VSI
2367  *
2368  * If this function returns with an error, then it's possible one or
2369  * more of the rings is populated (while the rest are not).  It is the
2370  * callers duty to clean those orphaned rings.
2371  *
2372  * Return 0 on success, negative on failure
2373  **/
2374 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2375 {
2376         int i, err = 0;
2377
2378         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2379                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2380
2381         return err;
2382 }
2383
2384 /**
2385  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2386  * @vsi: ptr to the VSI
2387  *
2388  * Free VSI's transmit software resources
2389  **/
2390 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2391 {
2392         int i;
2393
2394         if (!vsi->tx_rings)
2395                 return;
2396
2397         for (i = 0; i < vsi->num_queue_pairs; i++)
2398                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2399                         i40e_free_tx_resources(vsi->tx_rings[i]);
2400 }
2401
2402 /**
2403  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2404  * @vsi: ptr to the VSI
2405  *
2406  * If this function returns with an error, then it's possible one or
2407  * more of the rings is populated (while the rest are not).  It is the
2408  * callers duty to clean those orphaned rings.
2409  *
2410  * Return 0 on success, negative on failure
2411  **/
2412 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2413 {
2414         int i, err = 0;
2415
2416         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2417                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2418 #ifdef I40E_FCOE
2419         i40e_fcoe_setup_ddp_resources(vsi);
2420 #endif
2421         return err;
2422 }
2423
2424 /**
2425  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2426  * @vsi: ptr to the VSI
2427  *
2428  * Free all receive software resources
2429  **/
2430 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2431 {
2432         int i;
2433
2434         if (!vsi->rx_rings)
2435                 return;
2436
2437         for (i = 0; i < vsi->num_queue_pairs; i++)
2438                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2439                         i40e_free_rx_resources(vsi->rx_rings[i]);
2440 #ifdef I40E_FCOE
2441         i40e_fcoe_free_ddp_resources(vsi);
2442 #endif
2443 }
2444
2445 /**
2446  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2447  * @ring: The Tx ring to configure
2448  *
2449  * This enables/disables XPS for a given Tx descriptor ring
2450  * based on the TCs enabled for the VSI that ring belongs to.
2451  **/
2452 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2453 {
2454         struct i40e_vsi *vsi = ring->vsi;
2455         cpumask_var_t mask;
2456
2457         if (!ring->q_vector || !ring->netdev)
2458                 return;
2459
2460         /* Single TC mode enable XPS */
2461         if (vsi->tc_config.numtc <= 1) {
2462                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2463                         netif_set_xps_queue(ring->netdev,
2464                                             &ring->q_vector->affinity_mask,
2465                                             ring->queue_index);
2466         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2467                 /* Disable XPS to allow selection based on TC */
2468                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2469                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2470                 free_cpumask_var(mask);
2471         }
2472 }
2473
2474 /**
2475  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2476  * @ring: The Tx ring to configure
2477  *
2478  * Configure the Tx descriptor ring in the HMC context.
2479  **/
2480 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2481 {
2482         struct i40e_vsi *vsi = ring->vsi;
2483         u16 pf_q = vsi->base_queue + ring->queue_index;
2484         struct i40e_hw *hw = &vsi->back->hw;
2485         struct i40e_hmc_obj_txq tx_ctx;
2486         i40e_status err = 0;
2487         u32 qtx_ctl = 0;
2488
2489         /* some ATR related tx ring init */
2490         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2491                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2492                 ring->atr_count = 0;
2493         } else {
2494                 ring->atr_sample_rate = 0;
2495         }
2496
2497         /* configure XPS */
2498         i40e_config_xps_tx_ring(ring);
2499
2500         /* clear the context structure first */
2501         memset(&tx_ctx, 0, sizeof(tx_ctx));
2502
2503         tx_ctx.new_context = 1;
2504         tx_ctx.base = (ring->dma / 128);
2505         tx_ctx.qlen = ring->count;
2506         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2507                                                I40E_FLAG_FD_ATR_ENABLED));
2508 #ifdef I40E_FCOE
2509         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2510 #endif
2511         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2512         /* FDIR VSI tx ring can still use RS bit and writebacks */
2513         if (vsi->type != I40E_VSI_FDIR)
2514                 tx_ctx.head_wb_ena = 1;
2515         tx_ctx.head_wb_addr = ring->dma +
2516                               (ring->count * sizeof(struct i40e_tx_desc));
2517
2518         /* As part of VSI creation/update, FW allocates certain
2519          * Tx arbitration queue sets for each TC enabled for
2520          * the VSI. The FW returns the handles to these queue
2521          * sets as part of the response buffer to Add VSI,
2522          * Update VSI, etc. AQ commands. It is expected that
2523          * these queue set handles be associated with the Tx
2524          * queues by the driver as part of the TX queue context
2525          * initialization. This has to be done regardless of
2526          * DCB as by default everything is mapped to TC0.
2527          */
2528         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2529         tx_ctx.rdylist_act = 0;
2530
2531         /* clear the context in the HMC */
2532         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2533         if (err) {
2534                 dev_info(&vsi->back->pdev->dev,
2535                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2536                          ring->queue_index, pf_q, err);
2537                 return -ENOMEM;
2538         }
2539
2540         /* set the context in the HMC */
2541         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2542         if (err) {
2543                 dev_info(&vsi->back->pdev->dev,
2544                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2545                          ring->queue_index, pf_q, err);
2546                 return -ENOMEM;
2547         }
2548
2549         /* Now associate this queue with this PCI function */
2550         if (vsi->type == I40E_VSI_VMDQ2) {
2551                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2552                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2553                            I40E_QTX_CTL_VFVM_INDX_MASK;
2554         } else {
2555                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2556         }
2557
2558         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2559                     I40E_QTX_CTL_PF_INDX_MASK);
2560         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2561         i40e_flush(hw);
2562
2563         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
2564
2565         /* cache tail off for easier writes later */
2566         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2567
2568         return 0;
2569 }
2570
2571 /**
2572  * i40e_configure_rx_ring - Configure a receive ring context
2573  * @ring: The Rx ring to configure
2574  *
2575  * Configure the Rx descriptor ring in the HMC context.
2576  **/
2577 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2578 {
2579         struct i40e_vsi *vsi = ring->vsi;
2580         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2581         u16 pf_q = vsi->base_queue + ring->queue_index;
2582         struct i40e_hw *hw = &vsi->back->hw;
2583         struct i40e_hmc_obj_rxq rx_ctx;
2584         i40e_status err = 0;
2585
2586         ring->state = 0;
2587
2588         /* clear the context structure first */
2589         memset(&rx_ctx, 0, sizeof(rx_ctx));
2590
2591         ring->rx_buf_len = vsi->rx_buf_len;
2592         ring->rx_hdr_len = vsi->rx_hdr_len;
2593
2594         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2595         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2596
2597         rx_ctx.base = (ring->dma / 128);
2598         rx_ctx.qlen = ring->count;
2599
2600         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2601                 set_ring_16byte_desc_enabled(ring);
2602                 rx_ctx.dsize = 0;
2603         } else {
2604                 rx_ctx.dsize = 1;
2605         }
2606
2607         rx_ctx.dtype = vsi->dtype;
2608         if (vsi->dtype) {
2609                 set_ring_ps_enabled(ring);
2610                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2611                                   I40E_RX_SPLIT_IP      |
2612                                   I40E_RX_SPLIT_TCP_UDP |
2613                                   I40E_RX_SPLIT_SCTP;
2614         } else {
2615                 rx_ctx.hsplit_0 = 0;
2616         }
2617
2618         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2619                                   (chain_len * ring->rx_buf_len));
2620         if (hw->revision_id == 0)
2621                 rx_ctx.lrxqthresh = 0;
2622         else
2623                 rx_ctx.lrxqthresh = 2;
2624         rx_ctx.crcstrip = 1;
2625         rx_ctx.l2tsel = 1;
2626         rx_ctx.showiv = 1;
2627 #ifdef I40E_FCOE
2628         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2629 #endif
2630         /* set the prefena field to 1 because the manual says to */
2631         rx_ctx.prefena = 1;
2632
2633         /* clear the context in the HMC */
2634         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2635         if (err) {
2636                 dev_info(&vsi->back->pdev->dev,
2637                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2638                          ring->queue_index, pf_q, err);
2639                 return -ENOMEM;
2640         }
2641
2642         /* set the context in the HMC */
2643         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2644         if (err) {
2645                 dev_info(&vsi->back->pdev->dev,
2646                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2647                          ring->queue_index, pf_q, err);
2648                 return -ENOMEM;
2649         }
2650
2651         /* cache tail for quicker writes, and clear the reg before use */
2652         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2653         writel(0, ring->tail);
2654
2655         if (ring_is_ps_enabled(ring)) {
2656                 i40e_alloc_rx_headers(ring);
2657                 i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
2658         } else {
2659                 i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
2660         }
2661
2662         return 0;
2663 }
2664
2665 /**
2666  * i40e_vsi_configure_tx - Configure the VSI for Tx
2667  * @vsi: VSI structure describing this set of rings and resources
2668  *
2669  * Configure the Tx VSI for operation.
2670  **/
2671 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2672 {
2673         int err = 0;
2674         u16 i;
2675
2676         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2677                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2678
2679         return err;
2680 }
2681
2682 /**
2683  * i40e_vsi_configure_rx - Configure the VSI for Rx
2684  * @vsi: the VSI being configured
2685  *
2686  * Configure the Rx VSI for operation.
2687  **/
2688 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2689 {
2690         int err = 0;
2691         u16 i;
2692
2693         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2694                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2695                                + ETH_FCS_LEN + VLAN_HLEN;
2696         else
2697                 vsi->max_frame = I40E_RXBUFFER_2048;
2698
2699         /* figure out correct receive buffer length */
2700         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2701                                     I40E_FLAG_RX_PS_ENABLED)) {
2702         case I40E_FLAG_RX_1BUF_ENABLED:
2703                 vsi->rx_hdr_len = 0;
2704                 vsi->rx_buf_len = vsi->max_frame;
2705                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2706                 break;
2707         case I40E_FLAG_RX_PS_ENABLED:
2708                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2709                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2710                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2711                 break;
2712         default:
2713                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2714                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2715                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2716                 break;
2717         }
2718
2719 #ifdef I40E_FCOE
2720         /* setup rx buffer for FCoE */
2721         if ((vsi->type == I40E_VSI_FCOE) &&
2722             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2723                 vsi->rx_hdr_len = 0;
2724                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2725                 vsi->max_frame = I40E_RXBUFFER_3072;
2726                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2727         }
2728
2729 #endif /* I40E_FCOE */
2730         /* round up for the chip's needs */
2731         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2732                                 BIT_ULL(I40E_RXQ_CTX_HBUFF_SHIFT));
2733         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2734                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
2735
2736         /* set up individual rings */
2737         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2738                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2739
2740         return err;
2741 }
2742
2743 /**
2744  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2745  * @vsi: ptr to the VSI
2746  **/
2747 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2748 {
2749         struct i40e_ring *tx_ring, *rx_ring;
2750         u16 qoffset, qcount;
2751         int i, n;
2752
2753         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
2754                 /* Reset the TC information */
2755                 for (i = 0; i < vsi->num_queue_pairs; i++) {
2756                         rx_ring = vsi->rx_rings[i];
2757                         tx_ring = vsi->tx_rings[i];
2758                         rx_ring->dcb_tc = 0;
2759                         tx_ring->dcb_tc = 0;
2760                 }
2761         }
2762
2763         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2764                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
2765                         continue;
2766
2767                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2768                 qcount = vsi->tc_config.tc_info[n].qcount;
2769                 for (i = qoffset; i < (qoffset + qcount); i++) {
2770                         rx_ring = vsi->rx_rings[i];
2771                         tx_ring = vsi->tx_rings[i];
2772                         rx_ring->dcb_tc = n;
2773                         tx_ring->dcb_tc = n;
2774                 }
2775         }
2776 }
2777
2778 /**
2779  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2780  * @vsi: ptr to the VSI
2781  **/
2782 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2783 {
2784         if (vsi->netdev)
2785                 i40e_set_rx_mode(vsi->netdev);
2786 }
2787
2788 /**
2789  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2790  * @vsi: Pointer to the targeted VSI
2791  *
2792  * This function replays the hlist on the hw where all the SB Flow Director
2793  * filters were saved.
2794  **/
2795 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2796 {
2797         struct i40e_fdir_filter *filter;
2798         struct i40e_pf *pf = vsi->back;
2799         struct hlist_node *node;
2800
2801         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2802                 return;
2803
2804         hlist_for_each_entry_safe(filter, node,
2805                                   &pf->fdir_filter_list, fdir_node) {
2806                 i40e_add_del_fdir(vsi, filter, true);
2807         }
2808 }
2809
2810 /**
2811  * i40e_vsi_configure - Set up the VSI for action
2812  * @vsi: the VSI being configured
2813  **/
2814 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2815 {
2816         int err;
2817
2818         i40e_set_vsi_rx_mode(vsi);
2819         i40e_restore_vlan(vsi);
2820         i40e_vsi_config_dcb_rings(vsi);
2821         err = i40e_vsi_configure_tx(vsi);
2822         if (!err)
2823                 err = i40e_vsi_configure_rx(vsi);
2824
2825         return err;
2826 }
2827
2828 /**
2829  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2830  * @vsi: the VSI being configured
2831  **/
2832 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2833 {
2834         struct i40e_pf *pf = vsi->back;
2835         struct i40e_q_vector *q_vector;
2836         struct i40e_hw *hw = &pf->hw;
2837         u16 vector;
2838         int i, q;
2839         u32 val;
2840         u32 qp;
2841
2842         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2843          * and PFINT_LNKLSTn registers, e.g.:
2844          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2845          */
2846         qp = vsi->base_queue;
2847         vector = vsi->base_vector;
2848         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2849                 q_vector = vsi->q_vectors[i];
2850                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2851                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2852                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2853                      q_vector->rx.itr);
2854                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2855                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2856                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2857                      q_vector->tx.itr);
2858
2859                 /* Linked list for the queuepairs assigned to this vector */
2860                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2861                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2862                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2863                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2864                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2865                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2866                               (I40E_QUEUE_TYPE_TX
2867                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2868
2869                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2870
2871                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2872                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2873                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2874                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2875                               (I40E_QUEUE_TYPE_RX
2876                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2877
2878                         /* Terminate the linked list */
2879                         if (q == (q_vector->num_ringpairs - 1))
2880                                 val |= (I40E_QUEUE_END_OF_LIST
2881                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2882
2883                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2884                         qp++;
2885                 }
2886         }
2887
2888         i40e_flush(hw);
2889 }
2890
2891 /**
2892  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2893  * @hw: ptr to the hardware info
2894  **/
2895 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
2896 {
2897         struct i40e_hw *hw = &pf->hw;
2898         u32 val;
2899
2900         /* clear things first */
2901         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2902         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2903
2904         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2905               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2906               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2907               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2908               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2909               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2910               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2911               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2912
2913         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
2914                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
2915
2916         if (pf->flags & I40E_FLAG_PTP)
2917                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
2918
2919         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2920
2921         /* SW_ITR_IDX = 0, but don't change INTENA */
2922         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2923                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2924
2925         /* OTHER_ITR_IDX = 0 */
2926         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2927 }
2928
2929 /**
2930  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2931  * @vsi: the VSI being configured
2932  **/
2933 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2934 {
2935         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
2936         struct i40e_pf *pf = vsi->back;
2937         struct i40e_hw *hw = &pf->hw;
2938         u32 val;
2939
2940         /* set the ITR configuration */
2941         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2942         q_vector->rx.latency_range = I40E_LOW_LATENCY;
2943         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
2944         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2945         q_vector->tx.latency_range = I40E_LOW_LATENCY;
2946         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
2947
2948         i40e_enable_misc_int_causes(pf);
2949
2950         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
2951         wr32(hw, I40E_PFINT_LNKLST0, 0);
2952
2953         /* Associate the queue pair to the vector and enable the queue int */
2954         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
2955               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
2956               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2957
2958         wr32(hw, I40E_QINT_RQCTL(0), val);
2959
2960         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
2961               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
2962               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2963
2964         wr32(hw, I40E_QINT_TQCTL(0), val);
2965         i40e_flush(hw);
2966 }
2967
2968 /**
2969  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
2970  * @pf: board private structure
2971  **/
2972 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
2973 {
2974         struct i40e_hw *hw = &pf->hw;
2975
2976         wr32(hw, I40E_PFINT_DYN_CTL0,
2977              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2978         i40e_flush(hw);
2979 }
2980
2981 /**
2982  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
2983  * @pf: board private structure
2984  **/
2985 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
2986 {
2987         struct i40e_hw *hw = &pf->hw;
2988         u32 val;
2989
2990         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
2991               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
2992               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
2993
2994         wr32(hw, I40E_PFINT_DYN_CTL0, val);
2995         i40e_flush(hw);
2996 }
2997
2998 /**
2999  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
3000  * @vsi: pointer to a vsi
3001  * @vector: enable a particular Hw Interrupt vector
3002  **/
3003 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
3004 {
3005         struct i40e_pf *pf = vsi->back;
3006         struct i40e_hw *hw = &pf->hw;
3007         u32 val;
3008
3009         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
3010               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
3011               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3012         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
3013         /* skip the flush */
3014 }
3015
3016 /**
3017  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
3018  * @vsi: pointer to a vsi
3019  * @vector: disable a particular Hw Interrupt vector
3020  **/
3021 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
3022 {
3023         struct i40e_pf *pf = vsi->back;
3024         struct i40e_hw *hw = &pf->hw;
3025         u32 val;
3026
3027         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
3028         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
3029         i40e_flush(hw);
3030 }
3031
3032 /**
3033  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3034  * @irq: interrupt number
3035  * @data: pointer to a q_vector
3036  **/
3037 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3038 {
3039         struct i40e_q_vector *q_vector = data;
3040
3041         if (!q_vector->tx.ring && !q_vector->rx.ring)
3042                 return IRQ_HANDLED;
3043
3044         napi_schedule(&q_vector->napi);
3045
3046         return IRQ_HANDLED;
3047 }
3048
3049 /**
3050  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3051  * @vsi: the VSI being configured
3052  * @basename: name for the vector
3053  *
3054  * Allocates MSI-X vectors and requests interrupts from the kernel.
3055  **/
3056 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3057 {
3058         int q_vectors = vsi->num_q_vectors;
3059         struct i40e_pf *pf = vsi->back;
3060         int base = vsi->base_vector;
3061         int rx_int_idx = 0;
3062         int tx_int_idx = 0;
3063         int vector, err;
3064
3065         for (vector = 0; vector < q_vectors; vector++) {
3066                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3067
3068                 if (q_vector->tx.ring && q_vector->rx.ring) {
3069                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3070                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3071                         tx_int_idx++;
3072                 } else if (q_vector->rx.ring) {
3073                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3074                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3075                 } else if (q_vector->tx.ring) {
3076                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3077                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3078                 } else {
3079                         /* skip this unused q_vector */
3080                         continue;
3081                 }
3082                 err = request_irq(pf->msix_entries[base + vector].vector,
3083                                   vsi->irq_handler,
3084                                   0,
3085                                   q_vector->name,
3086                                   q_vector);
3087                 if (err) {
3088                         dev_info(&pf->pdev->dev,
3089                                  "%s: request_irq failed, error: %d\n",
3090                                  __func__, err);
3091                         goto free_queue_irqs;
3092                 }
3093                 /* assign the mask for this irq */
3094                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3095                                       &q_vector->affinity_mask);
3096         }
3097
3098         vsi->irqs_ready = true;
3099         return 0;
3100
3101 free_queue_irqs:
3102         while (vector) {
3103                 vector--;
3104                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3105                                       NULL);
3106                 free_irq(pf->msix_entries[base + vector].vector,
3107                          &(vsi->q_vectors[vector]));
3108         }
3109         return err;
3110 }
3111
3112 /**
3113  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3114  * @vsi: the VSI being un-configured
3115  **/
3116 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3117 {
3118         struct i40e_pf *pf = vsi->back;
3119         struct i40e_hw *hw = &pf->hw;
3120         int base = vsi->base_vector;
3121         int i;
3122
3123         for (i = 0; i < vsi->num_queue_pairs; i++) {
3124                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3125                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3126         }
3127
3128         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3129                 for (i = vsi->base_vector;
3130                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3131                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3132
3133                 i40e_flush(hw);
3134                 for (i = 0; i < vsi->num_q_vectors; i++)
3135                         synchronize_irq(pf->msix_entries[i + base].vector);
3136         } else {
3137                 /* Legacy and MSI mode - this stops all interrupt handling */
3138                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3139                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3140                 i40e_flush(hw);
3141                 synchronize_irq(pf->pdev->irq);
3142         }
3143 }
3144
3145 /**
3146  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3147  * @vsi: the VSI being configured
3148  **/
3149 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3150 {
3151         struct i40e_pf *pf = vsi->back;
3152         int i;
3153
3154         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3155                 for (i = vsi->base_vector;
3156                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3157                         i40e_irq_dynamic_enable(vsi, i);
3158         } else {
3159                 i40e_irq_dynamic_enable_icr0(pf);
3160         }
3161
3162         i40e_flush(&pf->hw);
3163         return 0;
3164 }
3165
3166 /**
3167  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3168  * @pf: board private structure
3169  **/
3170 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3171 {
3172         /* Disable ICR 0 */
3173         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3174         i40e_flush(&pf->hw);
3175 }
3176
3177 /**
3178  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3179  * @irq: interrupt number
3180  * @data: pointer to a q_vector
3181  *
3182  * This is the handler used for all MSI/Legacy interrupts, and deals
3183  * with both queue and non-queue interrupts.  This is also used in
3184  * MSIX mode to handle the non-queue interrupts.
3185  **/
3186 static irqreturn_t i40e_intr(int irq, void *data)
3187 {
3188         struct i40e_pf *pf = (struct i40e_pf *)data;
3189         struct i40e_hw *hw = &pf->hw;
3190         irqreturn_t ret = IRQ_NONE;
3191         u32 icr0, icr0_remaining;
3192         u32 val, ena_mask;
3193
3194         icr0 = rd32(hw, I40E_PFINT_ICR0);
3195         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3196
3197         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3198         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3199                 goto enable_intr;
3200
3201         /* if interrupt but no bits showing, must be SWINT */
3202         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3203             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3204                 pf->sw_int_count++;
3205
3206         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3207             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3208                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3209                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3210                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3211         }
3212
3213         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3214         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3215
3216                 /* temporarily disable queue cause for NAPI processing */
3217                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3218                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3219                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3220
3221                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3222                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3223                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3224
3225                 if (!test_bit(__I40E_DOWN, &pf->state))
3226                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
3227         }
3228
3229         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3230                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3231                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3232         }
3233
3234         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3235                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3236                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3237         }
3238
3239         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3240                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3241                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3242         }
3243
3244         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3245                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3246                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3247                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3248                 val = rd32(hw, I40E_GLGEN_RSTAT);
3249                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3250                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3251                 if (val == I40E_RESET_CORER) {
3252                         pf->corer_count++;
3253                 } else if (val == I40E_RESET_GLOBR) {
3254                         pf->globr_count++;
3255                 } else if (val == I40E_RESET_EMPR) {
3256                         pf->empr_count++;
3257                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3258                 }
3259         }
3260
3261         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3262                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3263                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3264                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3265                          rd32(hw, I40E_PFHMC_ERRORINFO),
3266                          rd32(hw, I40E_PFHMC_ERRORDATA));
3267         }
3268
3269         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3270                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3271
3272                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3273                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3274                         i40e_ptp_tx_hwtstamp(pf);
3275                 }
3276         }
3277
3278         /* If a critical error is pending we have no choice but to reset the
3279          * device.
3280          * Report and mask out any remaining unexpected interrupts.
3281          */
3282         icr0_remaining = icr0 & ena_mask;
3283         if (icr0_remaining) {
3284                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3285                          icr0_remaining);
3286                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3287                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3288                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3289                         dev_info(&pf->pdev->dev, "device will be reset\n");
3290                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3291                         i40e_service_event_schedule(pf);
3292                 }
3293                 ena_mask &= ~icr0_remaining;
3294         }
3295         ret = IRQ_HANDLED;
3296
3297 enable_intr:
3298         /* re-enable interrupt causes */
3299         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3300         if (!test_bit(__I40E_DOWN, &pf->state)) {
3301                 i40e_service_event_schedule(pf);
3302                 i40e_irq_dynamic_enable_icr0(pf);
3303         }
3304
3305         return ret;
3306 }
3307
3308 /**
3309  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3310  * @tx_ring:  tx ring to clean
3311  * @budget:   how many cleans we're allowed
3312  *
3313  * Returns true if there's any budget left (e.g. the clean is finished)
3314  **/
3315 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3316 {
3317         struct i40e_vsi *vsi = tx_ring->vsi;
3318         u16 i = tx_ring->next_to_clean;
3319         struct i40e_tx_buffer *tx_buf;
3320         struct i40e_tx_desc *tx_desc;
3321
3322         tx_buf = &tx_ring->tx_bi[i];
3323         tx_desc = I40E_TX_DESC(tx_ring, i);
3324         i -= tx_ring->count;
3325
3326         do {
3327                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3328
3329                 /* if next_to_watch is not set then there is no work pending */
3330                 if (!eop_desc)
3331                         break;
3332
3333                 /* prevent any other reads prior to eop_desc */
3334                 read_barrier_depends();
3335
3336                 /* if the descriptor isn't done, no work yet to do */
3337                 if (!(eop_desc->cmd_type_offset_bsz &
3338                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3339                         break;
3340
3341                 /* clear next_to_watch to prevent false hangs */
3342                 tx_buf->next_to_watch = NULL;
3343
3344                 tx_desc->buffer_addr = 0;
3345                 tx_desc->cmd_type_offset_bsz = 0;
3346                 /* move past filter desc */
3347                 tx_buf++;
3348                 tx_desc++;
3349                 i++;
3350                 if (unlikely(!i)) {
3351                         i -= tx_ring->count;
3352                         tx_buf = tx_ring->tx_bi;
3353                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3354                 }
3355                 /* unmap skb header data */
3356                 dma_unmap_single(tx_ring->dev,
3357                                  dma_unmap_addr(tx_buf, dma),
3358                                  dma_unmap_len(tx_buf, len),
3359                                  DMA_TO_DEVICE);
3360                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3361                         kfree(tx_buf->raw_buf);
3362
3363                 tx_buf->raw_buf = NULL;
3364                 tx_buf->tx_flags = 0;
3365                 tx_buf->next_to_watch = NULL;
3366                 dma_unmap_len_set(tx_buf, len, 0);
3367                 tx_desc->buffer_addr = 0;
3368                 tx_desc->cmd_type_offset_bsz = 0;
3369
3370                 /* move us past the eop_desc for start of next FD desc */
3371                 tx_buf++;
3372                 tx_desc++;
3373                 i++;
3374                 if (unlikely(!i)) {
3375                         i -= tx_ring->count;
3376                         tx_buf = tx_ring->tx_bi;
3377                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3378                 }
3379
3380                 /* update budget accounting */
3381                 budget--;
3382         } while (likely(budget));
3383
3384         i += tx_ring->count;
3385         tx_ring->next_to_clean = i;
3386
3387         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
3388                 i40e_irq_dynamic_enable(vsi,
3389                                 tx_ring->q_vector->v_idx + vsi->base_vector);
3390         }
3391         return budget > 0;
3392 }
3393
3394 /**
3395  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3396  * @irq: interrupt number
3397  * @data: pointer to a q_vector
3398  **/
3399 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3400 {
3401         struct i40e_q_vector *q_vector = data;
3402         struct i40e_vsi *vsi;
3403
3404         if (!q_vector->tx.ring)
3405                 return IRQ_HANDLED;
3406
3407         vsi = q_vector->tx.ring->vsi;
3408         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3409
3410         return IRQ_HANDLED;
3411 }
3412
3413 /**
3414  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3415  * @vsi: the VSI being configured
3416  * @v_idx: vector index
3417  * @qp_idx: queue pair index
3418  **/
3419 static void map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3420 {
3421         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3422         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3423         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3424
3425         tx_ring->q_vector = q_vector;
3426         tx_ring->next = q_vector->tx.ring;
3427         q_vector->tx.ring = tx_ring;
3428         q_vector->tx.count++;
3429
3430         rx_ring->q_vector = q_vector;
3431         rx_ring->next = q_vector->rx.ring;
3432         q_vector->rx.ring = rx_ring;
3433         q_vector->rx.count++;
3434 }
3435
3436 /**
3437  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3438  * @vsi: the VSI being configured
3439  *
3440  * This function maps descriptor rings to the queue-specific vectors
3441  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3442  * one vector per queue pair, but on a constrained vector budget, we
3443  * group the queue pairs as "efficiently" as possible.
3444  **/
3445 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3446 {
3447         int qp_remaining = vsi->num_queue_pairs;
3448         int q_vectors = vsi->num_q_vectors;
3449         int num_ringpairs;
3450         int v_start = 0;
3451         int qp_idx = 0;
3452
3453         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3454          * group them so there are multiple queues per vector.
3455          * It is also important to go through all the vectors available to be
3456          * sure that if we don't use all the vectors, that the remaining vectors
3457          * are cleared. This is especially important when decreasing the
3458          * number of queues in use.
3459          */
3460         for (; v_start < q_vectors; v_start++) {
3461                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3462
3463                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3464
3465                 q_vector->num_ringpairs = num_ringpairs;
3466
3467                 q_vector->rx.count = 0;
3468                 q_vector->tx.count = 0;
3469                 q_vector->rx.ring = NULL;
3470                 q_vector->tx.ring = NULL;
3471
3472                 while (num_ringpairs--) {
3473                         map_vector_to_qp(vsi, v_start, qp_idx);
3474                         qp_idx++;
3475                         qp_remaining--;
3476                 }
3477         }
3478 }
3479
3480 /**
3481  * i40e_vsi_request_irq - Request IRQ from the OS
3482  * @vsi: the VSI being configured
3483  * @basename: name for the vector
3484  **/
3485 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3486 {
3487         struct i40e_pf *pf = vsi->back;
3488         int err;
3489
3490         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3491                 err = i40e_vsi_request_irq_msix(vsi, basename);
3492         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3493                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3494                                   pf->int_name, pf);
3495         else
3496                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3497                                   pf->int_name, pf);
3498
3499         if (err)
3500                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3501
3502         return err;
3503 }
3504
3505 #ifdef CONFIG_NET_POLL_CONTROLLER
3506 /**
3507  * i40e_netpoll - A Polling 'interrupt'handler
3508  * @netdev: network interface device structure
3509  *
3510  * This is used by netconsole to send skbs without having to re-enable
3511  * interrupts.  It's not called while the normal interrupt routine is executing.
3512  **/
3513 #ifdef I40E_FCOE
3514 void i40e_netpoll(struct net_device *netdev)
3515 #else
3516 static void i40e_netpoll(struct net_device *netdev)
3517 #endif
3518 {
3519         struct i40e_netdev_priv *np = netdev_priv(netdev);
3520         struct i40e_vsi *vsi = np->vsi;
3521         struct i40e_pf *pf = vsi->back;
3522         int i;
3523
3524         /* if interface is down do nothing */
3525         if (test_bit(__I40E_DOWN, &vsi->state))
3526                 return;
3527
3528         pf->flags |= I40E_FLAG_IN_NETPOLL;
3529         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3530                 for (i = 0; i < vsi->num_q_vectors; i++)
3531                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3532         } else {
3533                 i40e_intr(pf->pdev->irq, netdev);
3534         }
3535         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3536 }
3537 #endif
3538
3539 /**
3540  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3541  * @pf: the PF being configured
3542  * @pf_q: the PF queue
3543  * @enable: enable or disable state of the queue
3544  *
3545  * This routine will wait for the given Tx queue of the PF to reach the
3546  * enabled or disabled state.
3547  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3548  * multiple retries; else will return 0 in case of success.
3549  **/
3550 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3551 {
3552         int i;
3553         u32 tx_reg;
3554
3555         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3556                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3557                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3558                         break;
3559
3560                 usleep_range(10, 20);
3561         }
3562         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3563                 return -ETIMEDOUT;
3564
3565         return 0;
3566 }
3567
3568 /**
3569  * i40e_vsi_control_tx - Start or stop a VSI's rings
3570  * @vsi: the VSI being configured
3571  * @enable: start or stop the rings
3572  **/
3573 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3574 {
3575         struct i40e_pf *pf = vsi->back;
3576         struct i40e_hw *hw = &pf->hw;
3577         int i, j, pf_q, ret = 0;
3578         u32 tx_reg;
3579
3580         pf_q = vsi->base_queue;
3581         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3582
3583                 /* warn the TX unit of coming changes */
3584                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3585                 if (!enable)
3586                         usleep_range(10, 20);
3587
3588                 for (j = 0; j < 50; j++) {
3589                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3590                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3591                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3592                                 break;
3593                         usleep_range(1000, 2000);
3594                 }
3595                 /* Skip if the queue is already in the requested state */
3596                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3597                         continue;
3598
3599                 /* turn on/off the queue */
3600                 if (enable) {
3601                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3602                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3603                 } else {
3604                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3605                 }
3606
3607                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3608                 /* No waiting for the Tx queue to disable */
3609                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3610                         continue;
3611
3612                 /* wait for the change to finish */
3613                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3614                 if (ret) {
3615                         dev_info(&pf->pdev->dev,
3616                                  "%s: VSI seid %d Tx ring %d %sable timeout\n",
3617                                  __func__, vsi->seid, pf_q,
3618                                  (enable ? "en" : "dis"));
3619                         break;
3620                 }
3621         }
3622
3623         if (hw->revision_id == 0)
3624                 mdelay(50);
3625         return ret;
3626 }
3627
3628 /**
3629  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3630  * @pf: the PF being configured
3631  * @pf_q: the PF queue
3632  * @enable: enable or disable state of the queue
3633  *
3634  * This routine will wait for the given Rx queue of the PF to reach the
3635  * enabled or disabled state.
3636  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3637  * multiple retries; else will return 0 in case of success.
3638  **/
3639 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3640 {
3641         int i;
3642         u32 rx_reg;
3643
3644         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3645                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3646                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3647                         break;
3648
3649                 usleep_range(10, 20);
3650         }
3651         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3652                 return -ETIMEDOUT;
3653
3654         return 0;
3655 }
3656
3657 /**
3658  * i40e_vsi_control_rx - Start or stop a VSI's rings
3659  * @vsi: the VSI being configured
3660  * @enable: start or stop the rings
3661  **/
3662 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3663 {
3664         struct i40e_pf *pf = vsi->back;
3665         struct i40e_hw *hw = &pf->hw;
3666         int i, j, pf_q, ret = 0;
3667         u32 rx_reg;
3668
3669         pf_q = vsi->base_queue;
3670         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3671                 for (j = 0; j < 50; j++) {
3672                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3673                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3674                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3675                                 break;
3676                         usleep_range(1000, 2000);
3677                 }
3678
3679                 /* Skip if the queue is already in the requested state */
3680                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3681                         continue;
3682
3683                 /* turn on/off the queue */
3684                 if (enable)
3685                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3686                 else
3687                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3688                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3689
3690                 /* wait for the change to finish */
3691                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3692                 if (ret) {
3693                         dev_info(&pf->pdev->dev,
3694                                  "%s: VSI seid %d Rx ring %d %sable timeout\n",
3695                                  __func__, vsi->seid, pf_q,
3696                                  (enable ? "en" : "dis"));
3697                         break;
3698                 }
3699         }
3700
3701         return ret;
3702 }
3703
3704 /**
3705  * i40e_vsi_control_rings - Start or stop a VSI's rings
3706  * @vsi: the VSI being configured
3707  * @enable: start or stop the rings
3708  **/
3709 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3710 {
3711         int ret = 0;
3712
3713         /* do rx first for enable and last for disable */
3714         if (request) {
3715                 ret = i40e_vsi_control_rx(vsi, request);
3716                 if (ret)
3717                         return ret;
3718                 ret = i40e_vsi_control_tx(vsi, request);
3719         } else {
3720                 /* Ignore return value, we need to shutdown whatever we can */
3721                 i40e_vsi_control_tx(vsi, request);
3722                 i40e_vsi_control_rx(vsi, request);
3723         }
3724
3725         return ret;
3726 }
3727
3728 /**
3729  * i40e_vsi_free_irq - Free the irq association with the OS
3730  * @vsi: the VSI being configured
3731  **/
3732 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3733 {
3734         struct i40e_pf *pf = vsi->back;
3735         struct i40e_hw *hw = &pf->hw;
3736         int base = vsi->base_vector;
3737         u32 val, qp;
3738         int i;
3739
3740         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3741                 if (!vsi->q_vectors)
3742                         return;
3743
3744                 if (!vsi->irqs_ready)
3745                         return;
3746
3747                 vsi->irqs_ready = false;
3748                 for (i = 0; i < vsi->num_q_vectors; i++) {
3749                         u16 vector = i + base;
3750
3751                         /* free only the irqs that were actually requested */
3752                         if (!vsi->q_vectors[i] ||
3753                             !vsi->q_vectors[i]->num_ringpairs)
3754                                 continue;
3755
3756                         /* clear the affinity_mask in the IRQ descriptor */
3757                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3758                                               NULL);
3759                         free_irq(pf->msix_entries[vector].vector,
3760                                  vsi->q_vectors[i]);
3761
3762                         /* Tear down the interrupt queue link list
3763                          *
3764                          * We know that they come in pairs and always
3765                          * the Rx first, then the Tx.  To clear the
3766                          * link list, stick the EOL value into the
3767                          * next_q field of the registers.
3768                          */
3769                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3770                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3771                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3772                         val |= I40E_QUEUE_END_OF_LIST
3773                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3774                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3775
3776                         while (qp != I40E_QUEUE_END_OF_LIST) {
3777                                 u32 next;
3778
3779                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3780
3781                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3782                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3783                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3784                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3785
3786                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3787                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3788
3789                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3790
3791                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3792
3793                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3794                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3795
3796                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3797                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3798                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3799                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3800
3801                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3802                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3803
3804                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3805                                 qp = next;
3806                         }
3807                 }
3808         } else {
3809                 free_irq(pf->pdev->irq, pf);
3810
3811                 val = rd32(hw, I40E_PFINT_LNKLST0);
3812                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3813                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3814                 val |= I40E_QUEUE_END_OF_LIST
3815                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3816                 wr32(hw, I40E_PFINT_LNKLST0, val);
3817
3818                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3819                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3820                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3821                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3822                          I40E_QINT_RQCTL_INTEVENT_MASK);
3823
3824                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3825                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3826
3827                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3828
3829                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3830
3831                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3832                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3833                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3834                          I40E_QINT_TQCTL_INTEVENT_MASK);
3835
3836                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3837                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3838
3839                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3840         }
3841 }
3842
3843 /**
3844  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3845  * @vsi: the VSI being configured
3846  * @v_idx: Index of vector to be freed
3847  *
3848  * This function frees the memory allocated to the q_vector.  In addition if
3849  * NAPI is enabled it will delete any references to the NAPI struct prior
3850  * to freeing the q_vector.
3851  **/
3852 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3853 {
3854         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3855         struct i40e_ring *ring;
3856
3857         if (!q_vector)
3858                 return;
3859
3860         /* disassociate q_vector from rings */
3861         i40e_for_each_ring(ring, q_vector->tx)
3862                 ring->q_vector = NULL;
3863
3864         i40e_for_each_ring(ring, q_vector->rx)
3865                 ring->q_vector = NULL;
3866
3867         /* only VSI w/ an associated netdev is set up w/ NAPI */
3868         if (vsi->netdev)
3869                 netif_napi_del(&q_vector->napi);
3870
3871         vsi->q_vectors[v_idx] = NULL;
3872
3873         kfree_rcu(q_vector, rcu);
3874 }
3875
3876 /**
3877  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3878  * @vsi: the VSI being un-configured
3879  *
3880  * This frees the memory allocated to the q_vectors and
3881  * deletes references to the NAPI struct.
3882  **/
3883 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3884 {
3885         int v_idx;
3886
3887         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3888                 i40e_free_q_vector(vsi, v_idx);
3889 }
3890
3891 /**
3892  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3893  * @pf: board private structure
3894  **/
3895 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3896 {
3897         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3898         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3899                 pci_disable_msix(pf->pdev);
3900                 kfree(pf->msix_entries);
3901                 pf->msix_entries = NULL;
3902                 kfree(pf->irq_pile);
3903                 pf->irq_pile = NULL;
3904         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3905                 pci_disable_msi(pf->pdev);
3906         }
3907         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3908 }
3909
3910 /**
3911  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3912  * @pf: board private structure
3913  *
3914  * We go through and clear interrupt specific resources and reset the structure
3915  * to pre-load conditions
3916  **/
3917 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3918 {
3919         int i;
3920
3921         i40e_stop_misc_vector(pf);
3922         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3923                 synchronize_irq(pf->msix_entries[0].vector);
3924                 free_irq(pf->msix_entries[0].vector, pf);
3925         }
3926
3927         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3928         for (i = 0; i < pf->num_alloc_vsi; i++)
3929                 if (pf->vsi[i])
3930                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3931         i40e_reset_interrupt_capability(pf);
3932 }
3933
3934 /**
3935  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3936  * @vsi: the VSI being configured
3937  **/
3938 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3939 {
3940         int q_idx;
3941
3942         if (!vsi->netdev)
3943                 return;
3944
3945         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3946                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3947 }
3948
3949 /**
3950  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3951  * @vsi: the VSI being configured
3952  **/
3953 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
3954 {
3955         int q_idx;
3956
3957         if (!vsi->netdev)
3958                 return;
3959
3960         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3961                 napi_disable(&vsi->q_vectors[q_idx]->napi);
3962 }
3963
3964 /**
3965  * i40e_vsi_close - Shut down a VSI
3966  * @vsi: the vsi to be quelled
3967  **/
3968 static void i40e_vsi_close(struct i40e_vsi *vsi)
3969 {
3970         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
3971                 i40e_down(vsi);
3972         i40e_vsi_free_irq(vsi);
3973         i40e_vsi_free_tx_resources(vsi);
3974         i40e_vsi_free_rx_resources(vsi);
3975 }
3976
3977 /**
3978  * i40e_quiesce_vsi - Pause a given VSI
3979  * @vsi: the VSI being paused
3980  **/
3981 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
3982 {
3983         if (test_bit(__I40E_DOWN, &vsi->state))
3984                 return;
3985
3986         /* No need to disable FCoE VSI when Tx suspended */
3987         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
3988             vsi->type == I40E_VSI_FCOE) {
3989                 dev_dbg(&vsi->back->pdev->dev,
3990                         "%s: VSI seid %d skipping FCoE VSI disable\n",
3991                          __func__, vsi->seid);
3992                 return;
3993         }
3994
3995         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
3996         if (vsi->netdev && netif_running(vsi->netdev)) {
3997                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
3998         } else {
3999                 i40e_vsi_close(vsi);
4000         }
4001 }
4002
4003 /**
4004  * i40e_unquiesce_vsi - Resume a given VSI
4005  * @vsi: the VSI being resumed
4006  **/
4007 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4008 {
4009         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4010                 return;
4011
4012         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4013         if (vsi->netdev && netif_running(vsi->netdev))
4014                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4015         else
4016                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4017 }
4018
4019 /**
4020  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4021  * @pf: the PF
4022  **/
4023 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4024 {
4025         int v;
4026
4027         for (v = 0; v < pf->num_alloc_vsi; v++) {
4028                 if (pf->vsi[v])
4029                         i40e_quiesce_vsi(pf->vsi[v]);
4030         }
4031 }
4032
4033 /**
4034  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4035  * @pf: the PF
4036  **/
4037 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4038 {
4039         int v;
4040
4041         for (v = 0; v < pf->num_alloc_vsi; v++) {
4042                 if (pf->vsi[v])
4043                         i40e_unquiesce_vsi(pf->vsi[v]);
4044         }
4045 }
4046
4047 #ifdef CONFIG_I40E_DCB
4048 /**
4049  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
4050  * @vsi: the VSI being configured
4051  *
4052  * This function waits for the given VSI's Tx queues to be disabled.
4053  **/
4054 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
4055 {
4056         struct i40e_pf *pf = vsi->back;
4057         int i, pf_q, ret;
4058
4059         pf_q = vsi->base_queue;
4060         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4061                 /* Check and wait for the disable status of the queue */
4062                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4063                 if (ret) {
4064                         dev_info(&pf->pdev->dev,
4065                                  "%s: VSI seid %d Tx ring %d disable timeout\n",
4066                                  __func__, vsi->seid, pf_q);
4067                         return ret;
4068                 }
4069         }
4070
4071         return 0;
4072 }
4073
4074 /**
4075  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
4076  * @pf: the PF
4077  *
4078  * This function waits for the Tx queues to be in disabled state for all the
4079  * VSIs that are managed by this PF.
4080  **/
4081 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
4082 {
4083         int v, ret = 0;
4084
4085         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4086                 /* No need to wait for FCoE VSI queues */
4087                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4088                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
4089                         if (ret)
4090                                 break;
4091                 }
4092         }
4093
4094         return ret;
4095 }
4096
4097 #endif
4098 /**
4099  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4100  * @pf: pointer to PF
4101  *
4102  * Get TC map for ISCSI PF type that will include iSCSI TC
4103  * and LAN TC.
4104  **/
4105 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4106 {
4107         struct i40e_dcb_app_priority_table app;
4108         struct i40e_hw *hw = &pf->hw;
4109         u8 enabled_tc = 1; /* TC0 is always enabled */
4110         u8 tc, i;
4111         /* Get the iSCSI APP TLV */
4112         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4113
4114         for (i = 0; i < dcbcfg->numapps; i++) {
4115                 app = dcbcfg->app[i];
4116                 if (app.selector == I40E_APP_SEL_TCPIP &&
4117                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4118                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4119                         enabled_tc |= BIT_ULL(tc);
4120                         break;
4121                 }
4122         }
4123
4124         return enabled_tc;
4125 }
4126
4127 /**
4128  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4129  * @dcbcfg: the corresponding DCBx configuration structure
4130  *
4131  * Return the number of TCs from given DCBx configuration
4132  **/
4133 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4134 {
4135         u8 num_tc = 0;
4136         int i;
4137
4138         /* Scan the ETS Config Priority Table to find
4139          * traffic class enabled for a given priority
4140          * and use the traffic class index to get the
4141          * number of traffic classes enabled
4142          */
4143         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4144                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4145                         num_tc = dcbcfg->etscfg.prioritytable[i];
4146         }
4147
4148         /* Traffic class index starts from zero so
4149          * increment to return the actual count
4150          */
4151         return num_tc + 1;
4152 }
4153
4154 /**
4155  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4156  * @dcbcfg: the corresponding DCBx configuration structure
4157  *
4158  * Query the current DCB configuration and return the number of
4159  * traffic classes enabled from the given DCBX config
4160  **/
4161 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4162 {
4163         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4164         u8 enabled_tc = 1;
4165         u8 i;
4166
4167         for (i = 0; i < num_tc; i++)
4168                 enabled_tc |= BIT(i);
4169
4170         return enabled_tc;
4171 }
4172
4173 /**
4174  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4175  * @pf: PF being queried
4176  *
4177  * Return number of traffic classes enabled for the given PF
4178  **/
4179 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4180 {
4181         struct i40e_hw *hw = &pf->hw;
4182         u8 i, enabled_tc;
4183         u8 num_tc = 0;
4184         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4185
4186         /* If DCB is not enabled then always in single TC */
4187         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4188                 return 1;
4189
4190         /* SFP mode will be enabled for all TCs on port */
4191         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4192                 return i40e_dcb_get_num_tc(dcbcfg);
4193
4194         /* MFP mode return count of enabled TCs for this PF */
4195         if (pf->hw.func_caps.iscsi)
4196                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4197         else
4198                 return 1; /* Only TC0 */
4199
4200         /* At least have TC0 */
4201         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4202         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4203                 if (enabled_tc & BIT_ULL(i))
4204                         num_tc++;
4205         }
4206         return num_tc;
4207 }
4208
4209 /**
4210  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4211  * @pf: PF being queried
4212  *
4213  * Return a bitmap for first enabled traffic class for this PF.
4214  **/
4215 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4216 {
4217         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4218         u8 i = 0;
4219
4220         if (!enabled_tc)
4221                 return 0x1; /* TC0 */
4222
4223         /* Find the first enabled TC */
4224         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4225                 if (enabled_tc & BIT_ULL(i))
4226                         break;
4227         }
4228
4229         return BIT(i);
4230 }
4231
4232 /**
4233  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4234  * @pf: PF being queried
4235  *
4236  * Return a bitmap for enabled traffic classes for this PF.
4237  **/
4238 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4239 {
4240         /* If DCB is not enabled for this PF then just return default TC */
4241         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4242                 return i40e_pf_get_default_tc(pf);
4243
4244         /* SFP mode we want PF to be enabled for all TCs */
4245         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4246                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4247
4248         /* MFP enabled and iSCSI PF type */
4249         if (pf->hw.func_caps.iscsi)
4250                 return i40e_get_iscsi_tc_map(pf);
4251         else
4252                 return i40e_pf_get_default_tc(pf);
4253 }
4254
4255 /**
4256  * i40e_vsi_get_bw_info - Query VSI BW Information
4257  * @vsi: the VSI being queried
4258  *
4259  * Returns 0 on success, negative value on failure
4260  **/
4261 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4262 {
4263         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4264         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4265         struct i40e_pf *pf = vsi->back;
4266         struct i40e_hw *hw = &pf->hw;
4267         i40e_status ret;
4268         u32 tc_bw_max;
4269         int i;
4270
4271         /* Get the VSI level BW configuration */
4272         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4273         if (ret) {
4274                 dev_info(&pf->pdev->dev,
4275                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4276                          i40e_stat_str(&pf->hw, ret),
4277                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4278                 return -EINVAL;
4279         }
4280
4281         /* Get the VSI level BW configuration per TC */
4282         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4283                                                NULL);
4284         if (ret) {
4285                 dev_info(&pf->pdev->dev,
4286                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4287                          i40e_stat_str(&pf->hw, ret),
4288                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4289                 return -EINVAL;
4290         }
4291
4292         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4293                 dev_info(&pf->pdev->dev,
4294                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4295                          bw_config.tc_valid_bits,
4296                          bw_ets_config.tc_valid_bits);
4297                 /* Still continuing */
4298         }
4299
4300         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4301         vsi->bw_max_quanta = bw_config.max_bw;
4302         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4303                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4304         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4305                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4306                 vsi->bw_ets_limit_credits[i] =
4307                                         le16_to_cpu(bw_ets_config.credits[i]);
4308                 /* 3 bits out of 4 for each TC */
4309                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4310         }
4311
4312         return 0;
4313 }
4314
4315 /**
4316  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4317  * @vsi: the VSI being configured
4318  * @enabled_tc: TC bitmap
4319  * @bw_credits: BW shared credits per TC
4320  *
4321  * Returns 0 on success, negative value on failure
4322  **/
4323 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4324                                        u8 *bw_share)
4325 {
4326         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4327         i40e_status ret;
4328         int i;
4329
4330         bw_data.tc_valid_bits = enabled_tc;
4331         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4332                 bw_data.tc_bw_credits[i] = bw_share[i];
4333
4334         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4335                                        NULL);
4336         if (ret) {
4337                 dev_info(&vsi->back->pdev->dev,
4338                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4339                          vsi->back->hw.aq.asq_last_status);
4340                 return -EINVAL;
4341         }
4342
4343         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4344                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4345
4346         return 0;
4347 }
4348
4349 /**
4350  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4351  * @vsi: the VSI being configured
4352  * @enabled_tc: TC map to be enabled
4353  *
4354  **/
4355 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4356 {
4357         struct net_device *netdev = vsi->netdev;
4358         struct i40e_pf *pf = vsi->back;
4359         struct i40e_hw *hw = &pf->hw;
4360         u8 netdev_tc = 0;
4361         int i;
4362         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4363
4364         if (!netdev)
4365                 return;
4366
4367         if (!enabled_tc) {
4368                 netdev_reset_tc(netdev);
4369                 return;
4370         }
4371
4372         /* Set up actual enabled TCs on the VSI */
4373         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4374                 return;
4375
4376         /* set per TC queues for the VSI */
4377         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4378                 /* Only set TC queues for enabled tcs
4379                  *
4380                  * e.g. For a VSI that has TC0 and TC3 enabled the
4381                  * enabled_tc bitmap would be 0x00001001; the driver
4382                  * will set the numtc for netdev as 2 that will be
4383                  * referenced by the netdev layer as TC 0 and 1.
4384                  */
4385                 if (vsi->tc_config.enabled_tc & BIT_ULL(i))
4386                         netdev_set_tc_queue(netdev,
4387                                         vsi->tc_config.tc_info[i].netdev_tc,
4388                                         vsi->tc_config.tc_info[i].qcount,
4389                                         vsi->tc_config.tc_info[i].qoffset);
4390         }
4391
4392         /* Assign UP2TC map for the VSI */
4393         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4394                 /* Get the actual TC# for the UP */
4395                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4396                 /* Get the mapped netdev TC# for the UP */
4397                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4398                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4399         }
4400 }
4401
4402 /**
4403  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4404  * @vsi: the VSI being configured
4405  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4406  **/
4407 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4408                                       struct i40e_vsi_context *ctxt)
4409 {
4410         /* copy just the sections touched not the entire info
4411          * since not all sections are valid as returned by
4412          * update vsi params
4413          */
4414         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4415         memcpy(&vsi->info.queue_mapping,
4416                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4417         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4418                sizeof(vsi->info.tc_mapping));
4419 }
4420
4421 /**
4422  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4423  * @vsi: VSI to be configured
4424  * @enabled_tc: TC bitmap
4425  *
4426  * This configures a particular VSI for TCs that are mapped to the
4427  * given TC bitmap. It uses default bandwidth share for TCs across
4428  * VSIs to configure TC for a particular VSI.
4429  *
4430  * NOTE:
4431  * It is expected that the VSI queues have been quisced before calling
4432  * this function.
4433  **/
4434 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4435 {
4436         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4437         struct i40e_vsi_context ctxt;
4438         int ret = 0;
4439         int i;
4440
4441         /* Check if enabled_tc is same as existing or new TCs */
4442         if (vsi->tc_config.enabled_tc == enabled_tc)
4443                 return ret;
4444
4445         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4446         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4447                 if (enabled_tc & BIT_ULL(i))
4448                         bw_share[i] = 1;
4449         }
4450
4451         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4452         if (ret) {
4453                 dev_info(&vsi->back->pdev->dev,
4454                          "Failed configuring TC map %d for VSI %d\n",
4455                          enabled_tc, vsi->seid);
4456                 goto out;
4457         }
4458
4459         /* Update Queue Pairs Mapping for currently enabled UPs */
4460         ctxt.seid = vsi->seid;
4461         ctxt.pf_num = vsi->back->hw.pf_id;
4462         ctxt.vf_num = 0;
4463         ctxt.uplink_seid = vsi->uplink_seid;
4464         ctxt.info = vsi->info;
4465         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4466
4467         /* Update the VSI after updating the VSI queue-mapping information */
4468         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4469         if (ret) {
4470                 dev_info(&vsi->back->pdev->dev,
4471                          "Update vsi tc config failed, err %s aq_err %s\n",
4472                          i40e_stat_str(&vsi->back->hw, ret),
4473                          i40e_aq_str(&vsi->back->hw,
4474                                      vsi->back->hw.aq.asq_last_status));
4475                 goto out;
4476         }
4477         /* update the local VSI info with updated queue map */
4478         i40e_vsi_update_queue_map(vsi, &ctxt);
4479         vsi->info.valid_sections = 0;
4480
4481         /* Update current VSI BW information */
4482         ret = i40e_vsi_get_bw_info(vsi);
4483         if (ret) {
4484                 dev_info(&vsi->back->pdev->dev,
4485                          "Failed updating vsi bw info, err %s aq_err %s\n",
4486                          i40e_stat_str(&vsi->back->hw, ret),
4487                          i40e_aq_str(&vsi->back->hw,
4488                                      vsi->back->hw.aq.asq_last_status));
4489                 goto out;
4490         }
4491
4492         /* Update the netdev TC setup */
4493         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4494 out:
4495         return ret;
4496 }
4497
4498 /**
4499  * i40e_veb_config_tc - Configure TCs for given VEB
4500  * @veb: given VEB
4501  * @enabled_tc: TC bitmap
4502  *
4503  * Configures given TC bitmap for VEB (switching) element
4504  **/
4505 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4506 {
4507         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4508         struct i40e_pf *pf = veb->pf;
4509         int ret = 0;
4510         int i;
4511
4512         /* No TCs or already enabled TCs just return */
4513         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4514                 return ret;
4515
4516         bw_data.tc_valid_bits = enabled_tc;
4517         /* bw_data.absolute_credits is not set (relative) */
4518
4519         /* Enable ETS TCs with equal BW Share for now */
4520         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4521                 if (enabled_tc & BIT_ULL(i))
4522                         bw_data.tc_bw_share_credits[i] = 1;
4523         }
4524
4525         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4526                                                    &bw_data, NULL);
4527         if (ret) {
4528                 dev_info(&pf->pdev->dev,
4529                          "VEB bw config failed, err %s aq_err %s\n",
4530                          i40e_stat_str(&pf->hw, ret),
4531                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4532                 goto out;
4533         }
4534
4535         /* Update the BW information */
4536         ret = i40e_veb_get_bw_info(veb);
4537         if (ret) {
4538                 dev_info(&pf->pdev->dev,
4539                          "Failed getting veb bw config, err %s aq_err %s\n",
4540                          i40e_stat_str(&pf->hw, ret),
4541                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4542         }
4543
4544 out:
4545         return ret;
4546 }
4547
4548 #ifdef CONFIG_I40E_DCB
4549 /**
4550  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4551  * @pf: PF struct
4552  *
4553  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4554  * the caller would've quiesce all the VSIs before calling
4555  * this function
4556  **/
4557 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4558 {
4559         u8 tc_map = 0;
4560         int ret;
4561         u8 v;
4562
4563         /* Enable the TCs available on PF to all VEBs */
4564         tc_map = i40e_pf_get_tc_map(pf);
4565         for (v = 0; v < I40E_MAX_VEB; v++) {
4566                 if (!pf->veb[v])
4567                         continue;
4568                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4569                 if (ret) {
4570                         dev_info(&pf->pdev->dev,
4571                                  "Failed configuring TC for VEB seid=%d\n",
4572                                  pf->veb[v]->seid);
4573                         /* Will try to configure as many components */
4574                 }
4575         }
4576
4577         /* Update each VSI */
4578         for (v = 0; v < pf->num_alloc_vsi; v++) {
4579                 if (!pf->vsi[v])
4580                         continue;
4581
4582                 /* - Enable all TCs for the LAN VSI
4583 #ifdef I40E_FCOE
4584                  * - For FCoE VSI only enable the TC configured
4585                  *   as per the APP TLV
4586 #endif
4587                  * - For all others keep them at TC0 for now
4588                  */
4589                 if (v == pf->lan_vsi)
4590                         tc_map = i40e_pf_get_tc_map(pf);
4591                 else
4592                         tc_map = i40e_pf_get_default_tc(pf);
4593 #ifdef I40E_FCOE
4594                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4595                         tc_map = i40e_get_fcoe_tc_map(pf);
4596 #endif /* #ifdef I40E_FCOE */
4597
4598                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4599                 if (ret) {
4600                         dev_info(&pf->pdev->dev,
4601                                  "Failed configuring TC for VSI seid=%d\n",
4602                                  pf->vsi[v]->seid);
4603                         /* Will try to configure as many components */
4604                 } else {
4605                         /* Re-configure VSI vectors based on updated TC map */
4606                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4607                         if (pf->vsi[v]->netdev)
4608                                 i40e_dcbnl_set_all(pf->vsi[v]);
4609                 }
4610         }
4611 }
4612
4613 /**
4614  * i40e_resume_port_tx - Resume port Tx
4615  * @pf: PF struct
4616  *
4617  * Resume a port's Tx and issue a PF reset in case of failure to
4618  * resume.
4619  **/
4620 static int i40e_resume_port_tx(struct i40e_pf *pf)
4621 {
4622         struct i40e_hw *hw = &pf->hw;
4623         int ret;
4624
4625         ret = i40e_aq_resume_port_tx(hw, NULL);
4626         if (ret) {
4627                 dev_info(&pf->pdev->dev,
4628                          "Resume Port Tx failed, err %s aq_err %s\n",
4629                           i40e_stat_str(&pf->hw, ret),
4630                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4631                 /* Schedule PF reset to recover */
4632                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4633                 i40e_service_event_schedule(pf);
4634         }
4635
4636         return ret;
4637 }
4638
4639 /**
4640  * i40e_init_pf_dcb - Initialize DCB configuration
4641  * @pf: PF being configured
4642  *
4643  * Query the current DCB configuration and cache it
4644  * in the hardware structure
4645  **/
4646 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4647 {
4648         struct i40e_hw *hw = &pf->hw;
4649         int err = 0;
4650
4651         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
4652         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
4653             (pf->hw.aq.fw_maj_ver < 4))
4654                 goto out;
4655
4656         /* Get the initial DCB configuration */
4657         err = i40e_init_dcb(hw);
4658         if (!err) {
4659                 /* Device/Function is not DCBX capable */
4660                 if ((!hw->func_caps.dcb) ||
4661                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4662                         dev_info(&pf->pdev->dev,
4663                                  "DCBX offload is not supported or is disabled for this PF.\n");
4664
4665                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4666                                 goto out;
4667
4668                 } else {
4669                         /* When status is not DISABLED then DCBX in FW */
4670                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4671                                        DCB_CAP_DCBX_VER_IEEE;
4672
4673                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
4674                         /* Enable DCB tagging only when more than one TC */
4675                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
4676                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4677                         dev_dbg(&pf->pdev->dev,
4678                                 "DCBX offload is supported for this PF.\n");
4679                 }
4680         } else {
4681                 dev_info(&pf->pdev->dev,
4682                          "Query for DCB configuration failed, err %s aq_err %s\n",
4683                          i40e_stat_str(&pf->hw, err),
4684                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4685         }
4686
4687 out:
4688         return err;
4689 }
4690 #endif /* CONFIG_I40E_DCB */
4691 #define SPEED_SIZE 14
4692 #define FC_SIZE 8
4693 /**
4694  * i40e_print_link_message - print link up or down
4695  * @vsi: the VSI for which link needs a message
4696  */
4697 static void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
4698 {
4699         char speed[SPEED_SIZE] = "Unknown";
4700         char fc[FC_SIZE] = "RX/TX";
4701
4702         if (!isup) {
4703                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4704                 return;
4705         }
4706
4707         /* Warn user if link speed on NPAR enabled partition is not at
4708          * least 10GB
4709          */
4710         if (vsi->back->hw.func_caps.npar_enable &&
4711             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
4712              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
4713                 netdev_warn(vsi->netdev,
4714                             "The partition detected link speed that is less than 10Gbps\n");
4715
4716         switch (vsi->back->hw.phy.link_info.link_speed) {
4717         case I40E_LINK_SPEED_40GB:
4718                 strlcpy(speed, "40 Gbps", SPEED_SIZE);
4719                 break;
4720         case I40E_LINK_SPEED_20GB:
4721                 strncpy(speed, "20 Gbps", SPEED_SIZE);
4722                 break;
4723         case I40E_LINK_SPEED_10GB:
4724                 strlcpy(speed, "10 Gbps", SPEED_SIZE);
4725                 break;
4726         case I40E_LINK_SPEED_1GB:
4727                 strlcpy(speed, "1000 Mbps", SPEED_SIZE);
4728                 break;
4729         case I40E_LINK_SPEED_100MB:
4730                 strncpy(speed, "100 Mbps", SPEED_SIZE);
4731                 break;
4732         default:
4733                 break;
4734         }
4735
4736         switch (vsi->back->hw.fc.current_mode) {
4737         case I40E_FC_FULL:
4738                 strlcpy(fc, "RX/TX", FC_SIZE);
4739                 break;
4740         case I40E_FC_TX_PAUSE:
4741                 strlcpy(fc, "TX", FC_SIZE);
4742                 break;
4743         case I40E_FC_RX_PAUSE:
4744                 strlcpy(fc, "RX", FC_SIZE);
4745                 break;
4746         default:
4747                 strlcpy(fc, "None", FC_SIZE);
4748                 break;
4749         }
4750
4751         netdev_info(vsi->netdev, "NIC Link is Up %s Full Duplex, Flow Control: %s\n",
4752                     speed, fc);
4753 }
4754
4755 /**
4756  * i40e_up_complete - Finish the last steps of bringing up a connection
4757  * @vsi: the VSI being configured
4758  **/
4759 static int i40e_up_complete(struct i40e_vsi *vsi)
4760 {
4761         struct i40e_pf *pf = vsi->back;
4762         int err;
4763
4764         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4765                 i40e_vsi_configure_msix(vsi);
4766         else
4767                 i40e_configure_msi_and_legacy(vsi);
4768
4769         /* start rings */
4770         err = i40e_vsi_control_rings(vsi, true);
4771         if (err)
4772                 return err;
4773
4774         clear_bit(__I40E_DOWN, &vsi->state);
4775         i40e_napi_enable_all(vsi);
4776         i40e_vsi_enable_irq(vsi);
4777
4778         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4779             (vsi->netdev)) {
4780                 i40e_print_link_message(vsi, true);
4781                 netif_tx_start_all_queues(vsi->netdev);
4782                 netif_carrier_on(vsi->netdev);
4783         } else if (vsi->netdev) {
4784                 i40e_print_link_message(vsi, false);
4785                 /* need to check for qualified module here*/
4786                 if ((pf->hw.phy.link_info.link_info &
4787                         I40E_AQ_MEDIA_AVAILABLE) &&
4788                     (!(pf->hw.phy.link_info.an_info &
4789                         I40E_AQ_QUALIFIED_MODULE)))
4790                         netdev_err(vsi->netdev,
4791                                    "the driver failed to link because an unqualified module was detected.");
4792         }
4793
4794         /* replay FDIR SB filters */
4795         if (vsi->type == I40E_VSI_FDIR) {
4796                 /* reset fd counters */
4797                 pf->fd_add_err = pf->fd_atr_cnt = 0;
4798                 if (pf->fd_tcp_rule > 0) {
4799                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4800                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
4801                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
4802                         pf->fd_tcp_rule = 0;
4803                 }
4804                 i40e_fdir_filter_restore(vsi);
4805         }
4806         i40e_service_event_schedule(pf);
4807
4808         return 0;
4809 }
4810
4811 /**
4812  * i40e_vsi_reinit_locked - Reset the VSI
4813  * @vsi: the VSI being configured
4814  *
4815  * Rebuild the ring structs after some configuration
4816  * has changed, e.g. MTU size.
4817  **/
4818 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4819 {
4820         struct i40e_pf *pf = vsi->back;
4821
4822         WARN_ON(in_interrupt());
4823         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4824                 usleep_range(1000, 2000);
4825         i40e_down(vsi);
4826
4827         /* Give a VF some time to respond to the reset.  The
4828          * two second wait is based upon the watchdog cycle in
4829          * the VF driver.
4830          */
4831         if (vsi->type == I40E_VSI_SRIOV)
4832                 msleep(2000);
4833         i40e_up(vsi);
4834         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4835 }
4836
4837 /**
4838  * i40e_up - Bring the connection back up after being down
4839  * @vsi: the VSI being configured
4840  **/
4841 int i40e_up(struct i40e_vsi *vsi)
4842 {
4843         int err;
4844
4845         err = i40e_vsi_configure(vsi);
4846         if (!err)
4847                 err = i40e_up_complete(vsi);
4848
4849         return err;
4850 }
4851
4852 /**
4853  * i40e_down - Shutdown the connection processing
4854  * @vsi: the VSI being stopped
4855  **/
4856 void i40e_down(struct i40e_vsi *vsi)
4857 {
4858         int i;
4859
4860         /* It is assumed that the caller of this function
4861          * sets the vsi->state __I40E_DOWN bit.
4862          */
4863         if (vsi->netdev) {
4864                 netif_carrier_off(vsi->netdev);
4865                 netif_tx_disable(vsi->netdev);
4866         }
4867         i40e_vsi_disable_irq(vsi);
4868         i40e_vsi_control_rings(vsi, false);
4869         i40e_napi_disable_all(vsi);
4870
4871         for (i = 0; i < vsi->num_queue_pairs; i++) {
4872                 i40e_clean_tx_ring(vsi->tx_rings[i]);
4873                 i40e_clean_rx_ring(vsi->rx_rings[i]);
4874         }
4875 }
4876
4877 /**
4878  * i40e_setup_tc - configure multiple traffic classes
4879  * @netdev: net device to configure
4880  * @tc: number of traffic classes to enable
4881  **/
4882 #ifdef I40E_FCOE
4883 int i40e_setup_tc(struct net_device *netdev, u8 tc)
4884 #else
4885 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
4886 #endif
4887 {
4888         struct i40e_netdev_priv *np = netdev_priv(netdev);
4889         struct i40e_vsi *vsi = np->vsi;
4890         struct i40e_pf *pf = vsi->back;
4891         u8 enabled_tc = 0;
4892         int ret = -EINVAL;
4893         int i;
4894
4895         /* Check if DCB enabled to continue */
4896         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
4897                 netdev_info(netdev, "DCB is not enabled for adapter\n");
4898                 goto exit;
4899         }
4900
4901         /* Check if MFP enabled */
4902         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4903                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
4904                 goto exit;
4905         }
4906
4907         /* Check whether tc count is within enabled limit */
4908         if (tc > i40e_pf_get_num_tc(pf)) {
4909                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
4910                 goto exit;
4911         }
4912
4913         /* Generate TC map for number of tc requested */
4914         for (i = 0; i < tc; i++)
4915                 enabled_tc |= BIT_ULL(i);
4916
4917         /* Requesting same TC configuration as already enabled */
4918         if (enabled_tc == vsi->tc_config.enabled_tc)
4919                 return 0;
4920
4921         /* Quiesce VSI queues */
4922         i40e_quiesce_vsi(vsi);
4923
4924         /* Configure VSI for enabled TCs */
4925         ret = i40e_vsi_config_tc(vsi, enabled_tc);
4926         if (ret) {
4927                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
4928                             vsi->seid);
4929                 goto exit;
4930         }
4931
4932         /* Unquiesce VSI */
4933         i40e_unquiesce_vsi(vsi);
4934
4935 exit:
4936         return ret;
4937 }
4938
4939 /**
4940  * i40e_open - Called when a network interface is made active
4941  * @netdev: network interface device structure
4942  *
4943  * The open entry point is called when a network interface is made
4944  * active by the system (IFF_UP).  At this point all resources needed
4945  * for transmit and receive operations are allocated, the interrupt
4946  * handler is registered with the OS, the netdev watchdog subtask is
4947  * enabled, and the stack is notified that the interface is ready.
4948  *
4949  * Returns 0 on success, negative value on failure
4950  **/
4951 int i40e_open(struct net_device *netdev)
4952 {
4953         struct i40e_netdev_priv *np = netdev_priv(netdev);
4954         struct i40e_vsi *vsi = np->vsi;
4955         struct i40e_pf *pf = vsi->back;
4956         int err;
4957
4958         /* disallow open during test or if eeprom is broken */
4959         if (test_bit(__I40E_TESTING, &pf->state) ||
4960             test_bit(__I40E_BAD_EEPROM, &pf->state))
4961                 return -EBUSY;
4962
4963         netif_carrier_off(netdev);
4964
4965         err = i40e_vsi_open(vsi);
4966         if (err)
4967                 return err;
4968
4969         /* configure global TSO hardware offload settings */
4970         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
4971                                                        TCP_FLAG_FIN) >> 16);
4972         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
4973                                                        TCP_FLAG_FIN |
4974                                                        TCP_FLAG_CWR) >> 16);
4975         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
4976
4977 #ifdef CONFIG_I40E_VXLAN
4978         vxlan_get_rx_port(netdev);
4979 #endif
4980
4981         return 0;
4982 }
4983
4984 /**
4985  * i40e_vsi_open -
4986  * @vsi: the VSI to open
4987  *
4988  * Finish initialization of the VSI.
4989  *
4990  * Returns 0 on success, negative value on failure
4991  **/
4992 int i40e_vsi_open(struct i40e_vsi *vsi)
4993 {
4994         struct i40e_pf *pf = vsi->back;
4995         char int_name[I40E_INT_NAME_STR_LEN];
4996         int err;
4997
4998         /* allocate descriptors */
4999         err = i40e_vsi_setup_tx_resources(vsi);
5000         if (err)
5001                 goto err_setup_tx;
5002         err = i40e_vsi_setup_rx_resources(vsi);
5003         if (err)
5004                 goto err_setup_rx;
5005
5006         err = i40e_vsi_configure(vsi);
5007         if (err)
5008                 goto err_setup_rx;
5009
5010         if (vsi->netdev) {
5011                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5012                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5013                 err = i40e_vsi_request_irq(vsi, int_name);
5014                 if (err)
5015                         goto err_setup_rx;
5016
5017                 /* Notify the stack of the actual queue counts. */
5018                 err = netif_set_real_num_tx_queues(vsi->netdev,
5019                                                    vsi->num_queue_pairs);
5020                 if (err)
5021                         goto err_set_queues;
5022
5023                 err = netif_set_real_num_rx_queues(vsi->netdev,
5024                                                    vsi->num_queue_pairs);
5025                 if (err)
5026                         goto err_set_queues;
5027
5028         } else if (vsi->type == I40E_VSI_FDIR) {
5029                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5030                          dev_driver_string(&pf->pdev->dev),
5031                          dev_name(&pf->pdev->dev));
5032                 err = i40e_vsi_request_irq(vsi, int_name);
5033
5034         } else {
5035                 err = -EINVAL;
5036                 goto err_setup_rx;
5037         }
5038
5039         err = i40e_up_complete(vsi);
5040         if (err)
5041                 goto err_up_complete;
5042
5043         return 0;
5044
5045 err_up_complete:
5046         i40e_down(vsi);
5047 err_set_queues:
5048         i40e_vsi_free_irq(vsi);
5049 err_setup_rx:
5050         i40e_vsi_free_rx_resources(vsi);
5051 err_setup_tx:
5052         i40e_vsi_free_tx_resources(vsi);
5053         if (vsi == pf->vsi[pf->lan_vsi])
5054                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5055
5056         return err;
5057 }
5058
5059 /**
5060  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5061  * @pf: Pointer to PF
5062  *
5063  * This function destroys the hlist where all the Flow Director
5064  * filters were saved.
5065  **/
5066 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5067 {
5068         struct i40e_fdir_filter *filter;
5069         struct hlist_node *node2;
5070
5071         hlist_for_each_entry_safe(filter, node2,
5072                                   &pf->fdir_filter_list, fdir_node) {
5073                 hlist_del(&filter->fdir_node);
5074                 kfree(filter);
5075         }
5076         pf->fdir_pf_active_filters = 0;
5077 }
5078
5079 /**
5080  * i40e_close - Disables a network interface
5081  * @netdev: network interface device structure
5082  *
5083  * The close entry point is called when an interface is de-activated
5084  * by the OS.  The hardware is still under the driver's control, but
5085  * this netdev interface is disabled.
5086  *
5087  * Returns 0, this is not allowed to fail
5088  **/
5089 #ifdef I40E_FCOE
5090 int i40e_close(struct net_device *netdev)
5091 #else
5092 static int i40e_close(struct net_device *netdev)
5093 #endif
5094 {
5095         struct i40e_netdev_priv *np = netdev_priv(netdev);
5096         struct i40e_vsi *vsi = np->vsi;
5097
5098         i40e_vsi_close(vsi);
5099
5100         return 0;
5101 }
5102
5103 /**
5104  * i40e_do_reset - Start a PF or Core Reset sequence
5105  * @pf: board private structure
5106  * @reset_flags: which reset is requested
5107  *
5108  * The essential difference in resets is that the PF Reset
5109  * doesn't clear the packet buffers, doesn't reset the PE
5110  * firmware, and doesn't bother the other PFs on the chip.
5111  **/
5112 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5113 {
5114         u32 val;
5115
5116         WARN_ON(in_interrupt());
5117
5118         if (i40e_check_asq_alive(&pf->hw))
5119                 i40e_vc_notify_reset(pf);
5120
5121         /* do the biggest reset indicated */
5122         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5123
5124                 /* Request a Global Reset
5125                  *
5126                  * This will start the chip's countdown to the actual full
5127                  * chip reset event, and a warning interrupt to be sent
5128                  * to all PFs, including the requestor.  Our handler
5129                  * for the warning interrupt will deal with the shutdown
5130                  * and recovery of the switch setup.
5131                  */
5132                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5133                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5134                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5135                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5136
5137         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5138
5139                 /* Request a Core Reset
5140                  *
5141                  * Same as Global Reset, except does *not* include the MAC/PHY
5142                  */
5143                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5144                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5145                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5146                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5147                 i40e_flush(&pf->hw);
5148
5149         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5150
5151                 /* Request a PF Reset
5152                  *
5153                  * Resets only the PF-specific registers
5154                  *
5155                  * This goes directly to the tear-down and rebuild of
5156                  * the switch, since we need to do all the recovery as
5157                  * for the Core Reset.
5158                  */
5159                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5160                 i40e_handle_reset_warning(pf);
5161
5162         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5163                 int v;
5164
5165                 /* Find the VSI(s) that requested a re-init */
5166                 dev_info(&pf->pdev->dev,
5167                          "VSI reinit requested\n");
5168                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5169                         struct i40e_vsi *vsi = pf->vsi[v];
5170                         if (vsi != NULL &&
5171                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5172                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5173                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5174                         }
5175                 }
5176
5177                 /* no further action needed, so return now */
5178                 return;
5179         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5180                 int v;
5181
5182                 /* Find the VSI(s) that needs to be brought down */
5183                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5184                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5185                         struct i40e_vsi *vsi = pf->vsi[v];
5186                         if (vsi != NULL &&
5187                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5188                                 set_bit(__I40E_DOWN, &vsi->state);
5189                                 i40e_down(vsi);
5190                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5191                         }
5192                 }
5193
5194                 /* no further action needed, so return now */
5195                 return;
5196         } else {
5197                 dev_info(&pf->pdev->dev,
5198                          "bad reset request 0x%08x\n", reset_flags);
5199                 return;
5200         }
5201 }
5202
5203 #ifdef CONFIG_I40E_DCB
5204 /**
5205  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5206  * @pf: board private structure
5207  * @old_cfg: current DCB config
5208  * @new_cfg: new DCB config
5209  **/
5210 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5211                             struct i40e_dcbx_config *old_cfg,
5212                             struct i40e_dcbx_config *new_cfg)
5213 {
5214         bool need_reconfig = false;
5215
5216         /* Check if ETS configuration has changed */
5217         if (memcmp(&new_cfg->etscfg,
5218                    &old_cfg->etscfg,
5219                    sizeof(new_cfg->etscfg))) {
5220                 /* If Priority Table has changed reconfig is needed */
5221                 if (memcmp(&new_cfg->etscfg.prioritytable,
5222                            &old_cfg->etscfg.prioritytable,
5223                            sizeof(new_cfg->etscfg.prioritytable))) {
5224                         need_reconfig = true;
5225                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5226                 }
5227
5228                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5229                            &old_cfg->etscfg.tcbwtable,
5230                            sizeof(new_cfg->etscfg.tcbwtable)))
5231                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5232
5233                 if (memcmp(&new_cfg->etscfg.tsatable,
5234                            &old_cfg->etscfg.tsatable,
5235                            sizeof(new_cfg->etscfg.tsatable)))
5236                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5237         }
5238
5239         /* Check if PFC configuration has changed */
5240         if (memcmp(&new_cfg->pfc,
5241                    &old_cfg->pfc,
5242                    sizeof(new_cfg->pfc))) {
5243                 need_reconfig = true;
5244                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5245         }
5246
5247         /* Check if APP Table has changed */
5248         if (memcmp(&new_cfg->app,
5249                    &old_cfg->app,
5250                    sizeof(new_cfg->app))) {
5251                 need_reconfig = true;
5252                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5253         }
5254
5255         dev_dbg(&pf->pdev->dev, "%s: need_reconfig=%d\n", __func__,
5256                 need_reconfig);
5257         return need_reconfig;
5258 }
5259
5260 /**
5261  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5262  * @pf: board private structure
5263  * @e: event info posted on ARQ
5264  **/
5265 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5266                                   struct i40e_arq_event_info *e)
5267 {
5268         struct i40e_aqc_lldp_get_mib *mib =
5269                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5270         struct i40e_hw *hw = &pf->hw;
5271         struct i40e_dcbx_config tmp_dcbx_cfg;
5272         bool need_reconfig = false;
5273         int ret = 0;
5274         u8 type;
5275
5276         /* Not DCB capable or capability disabled */
5277         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5278                 return ret;
5279
5280         /* Ignore if event is not for Nearest Bridge */
5281         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5282                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5283         dev_dbg(&pf->pdev->dev,
5284                 "%s: LLDP event mib bridge type 0x%x\n", __func__, type);
5285         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5286                 return ret;
5287
5288         /* Check MIB Type and return if event for Remote MIB update */
5289         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5290         dev_dbg(&pf->pdev->dev,
5291                 "%s: LLDP event mib type %s\n", __func__,
5292                 type ? "remote" : "local");
5293         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5294                 /* Update the remote cached instance and return */
5295                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5296                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5297                                 &hw->remote_dcbx_config);
5298                 goto exit;
5299         }
5300
5301         /* Store the old configuration */
5302         tmp_dcbx_cfg = hw->local_dcbx_config;
5303
5304         /* Reset the old DCBx configuration data */
5305         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5306         /* Get updated DCBX data from firmware */
5307         ret = i40e_get_dcb_config(&pf->hw);
5308         if (ret) {
5309                 dev_info(&pf->pdev->dev,
5310                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5311                          i40e_stat_str(&pf->hw, ret),
5312                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5313                 goto exit;
5314         }
5315
5316         /* No change detected in DCBX configs */
5317         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5318                     sizeof(tmp_dcbx_cfg))) {
5319                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5320                 goto exit;
5321         }
5322
5323         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5324                                                &hw->local_dcbx_config);
5325
5326         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5327
5328         if (!need_reconfig)
5329                 goto exit;
5330
5331         /* Enable DCB tagging only when more than one TC */
5332         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5333                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5334         else
5335                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5336
5337         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5338         /* Reconfiguration needed quiesce all VSIs */
5339         i40e_pf_quiesce_all_vsi(pf);
5340
5341         /* Changes in configuration update VEB/VSI */
5342         i40e_dcb_reconfigure(pf);
5343
5344         ret = i40e_resume_port_tx(pf);
5345
5346         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5347         /* In case of error no point in resuming VSIs */
5348         if (ret)
5349                 goto exit;
5350
5351         /* Wait for the PF's Tx queues to be disabled */
5352         ret = i40e_pf_wait_txq_disabled(pf);
5353         if (ret) {
5354                 /* Schedule PF reset to recover */
5355                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5356                 i40e_service_event_schedule(pf);
5357         } else {
5358                 i40e_pf_unquiesce_all_vsi(pf);
5359         }
5360
5361 exit:
5362         return ret;
5363 }
5364 #endif /* CONFIG_I40E_DCB */
5365
5366 /**
5367  * i40e_do_reset_safe - Protected reset path for userland calls.
5368  * @pf: board private structure
5369  * @reset_flags: which reset is requested
5370  *
5371  **/
5372 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5373 {
5374         rtnl_lock();
5375         i40e_do_reset(pf, reset_flags);
5376         rtnl_unlock();
5377 }
5378
5379 /**
5380  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5381  * @pf: board private structure
5382  * @e: event info posted on ARQ
5383  *
5384  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5385  * and VF queues
5386  **/
5387 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5388                                            struct i40e_arq_event_info *e)
5389 {
5390         struct i40e_aqc_lan_overflow *data =
5391                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5392         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5393         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5394         struct i40e_hw *hw = &pf->hw;
5395         struct i40e_vf *vf;
5396         u16 vf_id;
5397
5398         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5399                 queue, qtx_ctl);
5400
5401         /* Queue belongs to VF, find the VF and issue VF reset */
5402         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5403             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5404                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5405                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5406                 vf_id -= hw->func_caps.vf_base_id;
5407                 vf = &pf->vf[vf_id];
5408                 i40e_vc_notify_vf_reset(vf);
5409                 /* Allow VF to process pending reset notification */
5410                 msleep(20);
5411                 i40e_reset_vf(vf, false);
5412         }
5413 }
5414
5415 /**
5416  * i40e_service_event_complete - Finish up the service event
5417  * @pf: board private structure
5418  **/
5419 static void i40e_service_event_complete(struct i40e_pf *pf)
5420 {
5421         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5422
5423         /* flush memory to make sure state is correct before next watchog */
5424         smp_mb__before_atomic();
5425         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5426 }
5427
5428 /**
5429  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5430  * @pf: board private structure
5431  **/
5432 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5433 {
5434         u32 val, fcnt_prog;
5435
5436         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5437         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5438         return fcnt_prog;
5439 }
5440
5441 /**
5442  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5443  * @pf: board private structure
5444  **/
5445 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5446 {
5447         u32 val, fcnt_prog;
5448
5449         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5450         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5451                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5452                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5453         return fcnt_prog;
5454 }
5455
5456 /**
5457  * i40e_get_global_fd_count - Get total FD filters programmed on device
5458  * @pf: board private structure
5459  **/
5460 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5461 {
5462         u32 val, fcnt_prog;
5463
5464         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5465         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5466                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5467                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5468         return fcnt_prog;
5469 }
5470
5471 /**
5472  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5473  * @pf: board private structure
5474  **/
5475 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5476 {
5477         u32 fcnt_prog, fcnt_avail;
5478
5479         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5480                 return;
5481
5482         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5483          * to re-enable
5484          */
5485         fcnt_prog = i40e_get_global_fd_count(pf);
5486         fcnt_avail = pf->fdir_pf_filter_count;
5487         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5488             (pf->fd_add_err == 0) ||
5489             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5490                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5491                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5492                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5493                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5494                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5495                 }
5496         }
5497         /* Wait for some more space to be available to turn on ATR */
5498         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5499                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5500                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5501                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5502                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5503                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5504                 }
5505         }
5506 }
5507
5508 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5509 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5510 /**
5511  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5512  * @pf: board private structure
5513  **/
5514 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5515 {
5516         unsigned long min_flush_time;
5517         int flush_wait_retry = 50;
5518         bool disable_atr = false;
5519         int fd_room;
5520         int reg;
5521
5522         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5523                 return;
5524
5525         if (time_after(jiffies, pf->fd_flush_timestamp +
5526                                 (I40E_MIN_FD_FLUSH_INTERVAL * HZ))) {
5527                 /* If the flush is happening too quick and we have mostly
5528                  * SB rules we should not re-enable ATR for some time.
5529                  */
5530                 min_flush_time = pf->fd_flush_timestamp
5531                                 + (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5532                 fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5533
5534                 if (!(time_after(jiffies, min_flush_time)) &&
5535                     (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5536                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5537                                 dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5538                         disable_atr = true;
5539                 }
5540
5541                 pf->fd_flush_timestamp = jiffies;
5542                 pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5543                 /* flush all filters */
5544                 wr32(&pf->hw, I40E_PFQF_CTL_1,
5545                      I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5546                 i40e_flush(&pf->hw);
5547                 pf->fd_flush_cnt++;
5548                 pf->fd_add_err = 0;
5549                 do {
5550                         /* Check FD flush status every 5-6msec */
5551                         usleep_range(5000, 6000);
5552                         reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5553                         if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5554                                 break;
5555                 } while (flush_wait_retry--);
5556                 if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5557                         dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5558                 } else {
5559                         /* replay sideband filters */
5560                         i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5561                         if (!disable_atr)
5562                                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5563                         clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5564                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5565                                 dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5566                 }
5567         }
5568 }
5569
5570 /**
5571  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5572  * @pf: board private structure
5573  **/
5574 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5575 {
5576         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5577 }
5578
5579 /* We can see up to 256 filter programming desc in transit if the filters are
5580  * being applied really fast; before we see the first
5581  * filter miss error on Rx queue 0. Accumulating enough error messages before
5582  * reacting will make sure we don't cause flush too often.
5583  */
5584 #define I40E_MAX_FD_PROGRAM_ERROR 256
5585
5586 /**
5587  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5588  * @pf: board private structure
5589  **/
5590 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5591 {
5592
5593         /* if interface is down do nothing */
5594         if (test_bit(__I40E_DOWN, &pf->state))
5595                 return;
5596
5597         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5598                 return;
5599
5600         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5601                 i40e_fdir_flush_and_replay(pf);
5602
5603         i40e_fdir_check_and_reenable(pf);
5604
5605 }
5606
5607 /**
5608  * i40e_vsi_link_event - notify VSI of a link event
5609  * @vsi: vsi to be notified
5610  * @link_up: link up or down
5611  **/
5612 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5613 {
5614         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5615                 return;
5616
5617         switch (vsi->type) {
5618         case I40E_VSI_MAIN:
5619 #ifdef I40E_FCOE
5620         case I40E_VSI_FCOE:
5621 #endif
5622                 if (!vsi->netdev || !vsi->netdev_registered)
5623                         break;
5624
5625                 if (link_up) {
5626                         netif_carrier_on(vsi->netdev);
5627                         netif_tx_wake_all_queues(vsi->netdev);
5628                 } else {
5629                         netif_carrier_off(vsi->netdev);
5630                         netif_tx_stop_all_queues(vsi->netdev);
5631                 }
5632                 break;
5633
5634         case I40E_VSI_SRIOV:
5635         case I40E_VSI_VMDQ2:
5636         case I40E_VSI_CTRL:
5637         case I40E_VSI_MIRROR:
5638         default:
5639                 /* there is no notification for other VSIs */
5640                 break;
5641         }
5642 }
5643
5644 /**
5645  * i40e_veb_link_event - notify elements on the veb of a link event
5646  * @veb: veb to be notified
5647  * @link_up: link up or down
5648  **/
5649 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5650 {
5651         struct i40e_pf *pf;
5652         int i;
5653
5654         if (!veb || !veb->pf)
5655                 return;
5656         pf = veb->pf;
5657
5658         /* depth first... */
5659         for (i = 0; i < I40E_MAX_VEB; i++)
5660                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5661                         i40e_veb_link_event(pf->veb[i], link_up);
5662
5663         /* ... now the local VSIs */
5664         for (i = 0; i < pf->num_alloc_vsi; i++)
5665                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5666                         i40e_vsi_link_event(pf->vsi[i], link_up);
5667 }
5668
5669 /**
5670  * i40e_link_event - Update netif_carrier status
5671  * @pf: board private structure
5672  **/
5673 static void i40e_link_event(struct i40e_pf *pf)
5674 {
5675         bool new_link, old_link;
5676         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5677         u8 new_link_speed, old_link_speed;
5678
5679         /* set this to force the get_link_status call to refresh state */
5680         pf->hw.phy.get_link_info = true;
5681
5682         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5683         new_link = i40e_get_link_status(&pf->hw);
5684         old_link_speed = pf->hw.phy.link_info_old.link_speed;
5685         new_link_speed = pf->hw.phy.link_info.link_speed;
5686
5687         if (new_link == old_link &&
5688             new_link_speed == old_link_speed &&
5689             (test_bit(__I40E_DOWN, &vsi->state) ||
5690              new_link == netif_carrier_ok(vsi->netdev)))
5691                 return;
5692
5693         if (!test_bit(__I40E_DOWN, &vsi->state))
5694                 i40e_print_link_message(vsi, new_link);
5695
5696         /* Notify the base of the switch tree connected to
5697          * the link.  Floating VEBs are not notified.
5698          */
5699         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5700                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5701         else
5702                 i40e_vsi_link_event(vsi, new_link);
5703
5704         if (pf->vf)
5705                 i40e_vc_notify_link_state(pf);
5706
5707         if (pf->flags & I40E_FLAG_PTP)
5708                 i40e_ptp_set_increment(pf);
5709 }
5710
5711 /**
5712  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
5713  * @pf: board private structure
5714  *
5715  * Set the per-queue flags to request a check for stuck queues in the irq
5716  * clean functions, then force interrupts to be sure the irq clean is called.
5717  **/
5718 static void i40e_check_hang_subtask(struct i40e_pf *pf)
5719 {
5720         int i, v;
5721
5722         /* If we're down or resetting, just bail */
5723         if (test_bit(__I40E_DOWN, &pf->state) ||
5724             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5725                 return;
5726
5727         /* for each VSI/netdev
5728          *     for each Tx queue
5729          *         set the check flag
5730          *     for each q_vector
5731          *         force an interrupt
5732          */
5733         for (v = 0; v < pf->num_alloc_vsi; v++) {
5734                 struct i40e_vsi *vsi = pf->vsi[v];
5735                 int armed = 0;
5736
5737                 if (!pf->vsi[v] ||
5738                     test_bit(__I40E_DOWN, &vsi->state) ||
5739                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
5740                         continue;
5741
5742                 for (i = 0; i < vsi->num_queue_pairs; i++) {
5743                         set_check_for_tx_hang(vsi->tx_rings[i]);
5744                         if (test_bit(__I40E_HANG_CHECK_ARMED,
5745                                      &vsi->tx_rings[i]->state))
5746                                 armed++;
5747                 }
5748
5749                 if (armed) {
5750                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
5751                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
5752                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
5753                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK |
5754                                       I40E_PFINT_DYN_CTL0_ITR_INDX_MASK |
5755                                       I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK |
5756                                       I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK));
5757                         } else {
5758                                 u16 vec = vsi->base_vector - 1;
5759                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
5760                                       I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK |
5761                                       I40E_PFINT_DYN_CTLN_ITR_INDX_MASK |
5762                                       I40E_PFINT_DYN_CTLN_SW_ITR_INDX_ENA_MASK |
5763                                       I40E_PFINT_DYN_CTLN_SW_ITR_INDX_MASK);
5764                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
5765                                         wr32(&vsi->back->hw,
5766                                              I40E_PFINT_DYN_CTLN(vec), val);
5767                         }
5768                         i40e_flush(&vsi->back->hw);
5769                 }
5770         }
5771 }
5772
5773 /**
5774  * i40e_watchdog_subtask - periodic checks not using event driven response
5775  * @pf: board private structure
5776  **/
5777 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5778 {
5779         int i;
5780
5781         /* if interface is down do nothing */
5782         if (test_bit(__I40E_DOWN, &pf->state) ||
5783             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5784                 return;
5785
5786         /* make sure we don't do these things too often */
5787         if (time_before(jiffies, (pf->service_timer_previous +
5788                                   pf->service_timer_period)))
5789                 return;
5790         pf->service_timer_previous = jiffies;
5791
5792         i40e_check_hang_subtask(pf);
5793         i40e_link_event(pf);
5794
5795         /* Update the stats for active netdevs so the network stack
5796          * can look at updated numbers whenever it cares to
5797          */
5798         for (i = 0; i < pf->num_alloc_vsi; i++)
5799                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5800                         i40e_update_stats(pf->vsi[i]);
5801
5802         /* Update the stats for the active switching components */
5803         for (i = 0; i < I40E_MAX_VEB; i++)
5804                 if (pf->veb[i])
5805                         i40e_update_veb_stats(pf->veb[i]);
5806
5807         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5808 }
5809
5810 /**
5811  * i40e_reset_subtask - Set up for resetting the device and driver
5812  * @pf: board private structure
5813  **/
5814 static void i40e_reset_subtask(struct i40e_pf *pf)
5815 {
5816         u32 reset_flags = 0;
5817
5818         rtnl_lock();
5819         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5820                 reset_flags |= BIT_ULL(__I40E_REINIT_REQUESTED);
5821                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5822         }
5823         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5824                 reset_flags |= BIT_ULL(__I40E_PF_RESET_REQUESTED);
5825                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5826         }
5827         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5828                 reset_flags |= BIT_ULL(__I40E_CORE_RESET_REQUESTED);
5829                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5830         }
5831         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5832                 reset_flags |= BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED);
5833                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5834         }
5835         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5836                 reset_flags |= BIT_ULL(__I40E_DOWN_REQUESTED);
5837                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5838         }
5839
5840         /* If there's a recovery already waiting, it takes
5841          * precedence before starting a new reset sequence.
5842          */
5843         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5844                 i40e_handle_reset_warning(pf);
5845                 goto unlock;
5846         }
5847
5848         /* If we're already down or resetting, just bail */
5849         if (reset_flags &&
5850             !test_bit(__I40E_DOWN, &pf->state) &&
5851             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5852                 i40e_do_reset(pf, reset_flags);
5853
5854 unlock:
5855         rtnl_unlock();
5856 }
5857
5858 /**
5859  * i40e_handle_link_event - Handle link event
5860  * @pf: board private structure
5861  * @e: event info posted on ARQ
5862  **/
5863 static void i40e_handle_link_event(struct i40e_pf *pf,
5864                                    struct i40e_arq_event_info *e)
5865 {
5866         struct i40e_hw *hw = &pf->hw;
5867         struct i40e_aqc_get_link_status *status =
5868                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5869
5870         /* save off old link status information */
5871         hw->phy.link_info_old = hw->phy.link_info;
5872
5873         /* Do a new status request to re-enable LSE reporting
5874          * and load new status information into the hw struct
5875          * This completely ignores any state information
5876          * in the ARQ event info, instead choosing to always
5877          * issue the AQ update link status command.
5878          */
5879         i40e_link_event(pf);
5880
5881         /* check for unqualified module, if link is down */
5882         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
5883             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
5884             (!(status->link_info & I40E_AQ_LINK_UP)))
5885                 dev_err(&pf->pdev->dev,
5886                         "The driver failed to link because an unqualified module was detected.\n");
5887 }
5888
5889 /**
5890  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5891  * @pf: board private structure
5892  **/
5893 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5894 {
5895         struct i40e_arq_event_info event;
5896         struct i40e_hw *hw = &pf->hw;
5897         u16 pending, i = 0;
5898         i40e_status ret;
5899         u16 opcode;
5900         u32 oldval;
5901         u32 val;
5902
5903         /* Do not run clean AQ when PF reset fails */
5904         if (test_bit(__I40E_RESET_FAILED, &pf->state))
5905                 return;
5906
5907         /* check for error indications */
5908         val = rd32(&pf->hw, pf->hw.aq.arq.len);
5909         oldval = val;
5910         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
5911                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
5912                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
5913         }
5914         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
5915                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
5916                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
5917         }
5918         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
5919                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
5920                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
5921         }
5922         if (oldval != val)
5923                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
5924
5925         val = rd32(&pf->hw, pf->hw.aq.asq.len);
5926         oldval = val;
5927         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
5928                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
5929                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
5930         }
5931         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
5932                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
5933                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
5934         }
5935         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
5936                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
5937                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
5938         }
5939         if (oldval != val)
5940                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
5941
5942         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
5943         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
5944         if (!event.msg_buf)
5945                 return;
5946
5947         do {
5948                 ret = i40e_clean_arq_element(hw, &event, &pending);
5949                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
5950                         break;
5951                 else if (ret) {
5952                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
5953                         break;
5954                 }
5955
5956                 opcode = le16_to_cpu(event.desc.opcode);
5957                 switch (opcode) {
5958
5959                 case i40e_aqc_opc_get_link_status:
5960                         i40e_handle_link_event(pf, &event);
5961                         break;
5962                 case i40e_aqc_opc_send_msg_to_pf:
5963                         ret = i40e_vc_process_vf_msg(pf,
5964                                         le16_to_cpu(event.desc.retval),
5965                                         le32_to_cpu(event.desc.cookie_high),
5966                                         le32_to_cpu(event.desc.cookie_low),
5967                                         event.msg_buf,
5968                                         event.msg_len);
5969                         break;
5970                 case i40e_aqc_opc_lldp_update_mib:
5971                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
5972 #ifdef CONFIG_I40E_DCB
5973                         rtnl_lock();
5974                         ret = i40e_handle_lldp_event(pf, &event);
5975                         rtnl_unlock();
5976 #endif /* CONFIG_I40E_DCB */
5977                         break;
5978                 case i40e_aqc_opc_event_lan_overflow:
5979                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
5980                         i40e_handle_lan_overflow_event(pf, &event);
5981                         break;
5982                 case i40e_aqc_opc_send_msg_to_peer:
5983                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
5984                         break;
5985                 case i40e_aqc_opc_nvm_erase:
5986                 case i40e_aqc_opc_nvm_update:
5987                         i40e_debug(&pf->hw, I40E_DEBUG_NVM, "ARQ NVM operation completed\n");
5988                         break;
5989                 default:
5990                         dev_info(&pf->pdev->dev,
5991                                  "ARQ Error: Unknown event 0x%04x received\n",
5992                                  opcode);
5993                         break;
5994                 }
5995         } while (pending && (i++ < pf->adminq_work_limit));
5996
5997         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
5998         /* re-enable Admin queue interrupt cause */
5999         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6000         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6001         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6002         i40e_flush(hw);
6003
6004         kfree(event.msg_buf);
6005 }
6006
6007 /**
6008  * i40e_verify_eeprom - make sure eeprom is good to use
6009  * @pf: board private structure
6010  **/
6011 static void i40e_verify_eeprom(struct i40e_pf *pf)
6012 {
6013         int err;
6014
6015         err = i40e_diag_eeprom_test(&pf->hw);
6016         if (err) {
6017                 /* retry in case of garbage read */
6018                 err = i40e_diag_eeprom_test(&pf->hw);
6019                 if (err) {
6020                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6021                                  err);
6022                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6023                 }
6024         }
6025
6026         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6027                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6028                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6029         }
6030 }
6031
6032 /**
6033  * i40e_enable_pf_switch_lb
6034  * @pf: pointer to the PF structure
6035  *
6036  * enable switch loop back or die - no point in a return value
6037  **/
6038 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6039 {
6040         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6041         struct i40e_vsi_context ctxt;
6042         int ret;
6043
6044         ctxt.seid = pf->main_vsi_seid;
6045         ctxt.pf_num = pf->hw.pf_id;
6046         ctxt.vf_num = 0;
6047         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6048         if (ret) {
6049                 dev_info(&pf->pdev->dev,
6050                          "couldn't get PF vsi config, err %s aq_err %s\n",
6051                          i40e_stat_str(&pf->hw, ret),
6052                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6053                 return;
6054         }
6055         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6056         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6057         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6058
6059         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6060         if (ret) {
6061                 dev_info(&pf->pdev->dev,
6062                          "update vsi switch failed, err %s aq_err %s\n",
6063                          i40e_stat_str(&pf->hw, ret),
6064                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6065         }
6066 }
6067
6068 /**
6069  * i40e_disable_pf_switch_lb
6070  * @pf: pointer to the PF structure
6071  *
6072  * disable switch loop back or die - no point in a return value
6073  **/
6074 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6075 {
6076         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6077         struct i40e_vsi_context ctxt;
6078         int ret;
6079
6080         ctxt.seid = pf->main_vsi_seid;
6081         ctxt.pf_num = pf->hw.pf_id;
6082         ctxt.vf_num = 0;
6083         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6084         if (ret) {
6085                 dev_info(&pf->pdev->dev,
6086                          "couldn't get PF vsi config, err %s aq_err %s\n",
6087                          i40e_stat_str(&pf->hw, ret),
6088                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6089                 return;
6090         }
6091         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6092         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6093         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6094
6095         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6096         if (ret) {
6097                 dev_info(&pf->pdev->dev,
6098                          "update vsi switch failed, err %s aq_err %s\n",
6099                          i40e_stat_str(&pf->hw, ret),
6100                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6101         }
6102 }
6103
6104 /**
6105  * i40e_config_bridge_mode - Configure the HW bridge mode
6106  * @veb: pointer to the bridge instance
6107  *
6108  * Configure the loop back mode for the LAN VSI that is downlink to the
6109  * specified HW bridge instance. It is expected this function is called
6110  * when a new HW bridge is instantiated.
6111  **/
6112 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6113 {
6114         struct i40e_pf *pf = veb->pf;
6115
6116         dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6117                  veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6118         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6119                 i40e_disable_pf_switch_lb(pf);
6120         else
6121                 i40e_enable_pf_switch_lb(pf);
6122 }
6123
6124 /**
6125  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6126  * @veb: pointer to the VEB instance
6127  *
6128  * This is a recursive function that first builds the attached VSIs then
6129  * recurses in to build the next layer of VEB.  We track the connections
6130  * through our own index numbers because the seid's from the HW could
6131  * change across the reset.
6132  **/
6133 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6134 {
6135         struct i40e_vsi *ctl_vsi = NULL;
6136         struct i40e_pf *pf = veb->pf;
6137         int v, veb_idx;
6138         int ret;
6139
6140         /* build VSI that owns this VEB, temporarily attached to base VEB */
6141         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6142                 if (pf->vsi[v] &&
6143                     pf->vsi[v]->veb_idx == veb->idx &&
6144                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6145                         ctl_vsi = pf->vsi[v];
6146                         break;
6147                 }
6148         }
6149         if (!ctl_vsi) {
6150                 dev_info(&pf->pdev->dev,
6151                          "missing owner VSI for veb_idx %d\n", veb->idx);
6152                 ret = -ENOENT;
6153                 goto end_reconstitute;
6154         }
6155         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6156                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6157         ret = i40e_add_vsi(ctl_vsi);
6158         if (ret) {
6159                 dev_info(&pf->pdev->dev,
6160                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6161                          veb->idx, ret);
6162                 goto end_reconstitute;
6163         }
6164         i40e_vsi_reset_stats(ctl_vsi);
6165
6166         /* create the VEB in the switch and move the VSI onto the VEB */
6167         ret = i40e_add_veb(veb, ctl_vsi);
6168         if (ret)
6169                 goto end_reconstitute;
6170
6171         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6172                 veb->bridge_mode = BRIDGE_MODE_VEB;
6173         else
6174                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6175         i40e_config_bridge_mode(veb);
6176
6177         /* create the remaining VSIs attached to this VEB */
6178         for (v = 0; v < pf->num_alloc_vsi; v++) {
6179                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6180                         continue;
6181
6182                 if (pf->vsi[v]->veb_idx == veb->idx) {
6183                         struct i40e_vsi *vsi = pf->vsi[v];
6184                         vsi->uplink_seid = veb->seid;
6185                         ret = i40e_add_vsi(vsi);
6186                         if (ret) {
6187                                 dev_info(&pf->pdev->dev,
6188                                          "rebuild of vsi_idx %d failed: %d\n",
6189                                          v, ret);
6190                                 goto end_reconstitute;
6191                         }
6192                         i40e_vsi_reset_stats(vsi);
6193                 }
6194         }
6195
6196         /* create any VEBs attached to this VEB - RECURSION */
6197         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6198                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6199                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6200                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6201                         if (ret)
6202                                 break;
6203                 }
6204         }
6205
6206 end_reconstitute:
6207         return ret;
6208 }
6209
6210 /**
6211  * i40e_get_capabilities - get info about the HW
6212  * @pf: the PF struct
6213  **/
6214 static int i40e_get_capabilities(struct i40e_pf *pf)
6215 {
6216         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6217         u16 data_size;
6218         int buf_len;
6219         int err;
6220
6221         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6222         do {
6223                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6224                 if (!cap_buf)
6225                         return -ENOMEM;
6226
6227                 /* this loads the data into the hw struct for us */
6228                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6229                                             &data_size,
6230                                             i40e_aqc_opc_list_func_capabilities,
6231                                             NULL);
6232                 /* data loaded, buffer no longer needed */
6233                 kfree(cap_buf);
6234
6235                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6236                         /* retry with a larger buffer */
6237                         buf_len = data_size;
6238                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6239                         dev_info(&pf->pdev->dev,
6240                                  "capability discovery failed, err %s aq_err %s\n",
6241                                  i40e_stat_str(&pf->hw, err),
6242                                  i40e_aq_str(&pf->hw,
6243                                              pf->hw.aq.asq_last_status));
6244                         return -ENODEV;
6245                 }
6246         } while (err);
6247
6248         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
6249             (pf->hw.aq.fw_maj_ver < 2)) {
6250                 pf->hw.func_caps.num_msix_vectors++;
6251                 pf->hw.func_caps.num_msix_vectors_vf++;
6252         }
6253
6254         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6255                 dev_info(&pf->pdev->dev,
6256                          "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",
6257                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6258                          pf->hw.func_caps.num_msix_vectors,
6259                          pf->hw.func_caps.num_msix_vectors_vf,
6260                          pf->hw.func_caps.fd_filters_guaranteed,
6261                          pf->hw.func_caps.fd_filters_best_effort,
6262                          pf->hw.func_caps.num_tx_qp,
6263                          pf->hw.func_caps.num_vsis);
6264
6265 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6266                        + pf->hw.func_caps.num_vfs)
6267         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6268                 dev_info(&pf->pdev->dev,
6269                          "got num_vsis %d, setting num_vsis to %d\n",
6270                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6271                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6272         }
6273
6274         return 0;
6275 }
6276
6277 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6278
6279 /**
6280  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6281  * @pf: board private structure
6282  **/
6283 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6284 {
6285         struct i40e_vsi *vsi;
6286         int i;
6287
6288         /* quick workaround for an NVM issue that leaves a critical register
6289          * uninitialized
6290          */
6291         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6292                 static const u32 hkey[] = {
6293                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6294                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6295                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6296                         0x95b3a76d};
6297
6298                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6299                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6300         }
6301
6302         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6303                 return;
6304
6305         /* find existing VSI and see if it needs configuring */
6306         vsi = NULL;
6307         for (i = 0; i < pf->num_alloc_vsi; i++) {
6308                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6309                         vsi = pf->vsi[i];
6310                         break;
6311                 }
6312         }
6313
6314         /* create a new VSI if none exists */
6315         if (!vsi) {
6316                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6317                                      pf->vsi[pf->lan_vsi]->seid, 0);
6318                 if (!vsi) {
6319                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6320                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6321                         return;
6322                 }
6323         }
6324
6325         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6326 }
6327
6328 /**
6329  * i40e_fdir_teardown - release the Flow Director resources
6330  * @pf: board private structure
6331  **/
6332 static void i40e_fdir_teardown(struct i40e_pf *pf)
6333 {
6334         int i;
6335
6336         i40e_fdir_filter_exit(pf);
6337         for (i = 0; i < pf->num_alloc_vsi; i++) {
6338                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6339                         i40e_vsi_release(pf->vsi[i]);
6340                         break;
6341                 }
6342         }
6343 }
6344
6345 /**
6346  * i40e_prep_for_reset - prep for the core to reset
6347  * @pf: board private structure
6348  *
6349  * Close up the VFs and other things in prep for PF Reset.
6350   **/
6351 static void i40e_prep_for_reset(struct i40e_pf *pf)
6352 {
6353         struct i40e_hw *hw = &pf->hw;
6354         i40e_status ret = 0;
6355         u32 v;
6356
6357         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6358         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6359                 return;
6360
6361         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6362
6363         /* quiesce the VSIs and their queues that are not already DOWN */
6364         i40e_pf_quiesce_all_vsi(pf);
6365
6366         for (v = 0; v < pf->num_alloc_vsi; v++) {
6367                 if (pf->vsi[v])
6368                         pf->vsi[v]->seid = 0;
6369         }
6370
6371         i40e_shutdown_adminq(&pf->hw);
6372
6373         /* call shutdown HMC */
6374         if (hw->hmc.hmc_obj) {
6375                 ret = i40e_shutdown_lan_hmc(hw);
6376                 if (ret)
6377                         dev_warn(&pf->pdev->dev,
6378                                  "shutdown_lan_hmc failed: %d\n", ret);
6379         }
6380 }
6381
6382 /**
6383  * i40e_send_version - update firmware with driver version
6384  * @pf: PF struct
6385  */
6386 static void i40e_send_version(struct i40e_pf *pf)
6387 {
6388         struct i40e_driver_version dv;
6389
6390         dv.major_version = DRV_VERSION_MAJOR;
6391         dv.minor_version = DRV_VERSION_MINOR;
6392         dv.build_version = DRV_VERSION_BUILD;
6393         dv.subbuild_version = 0;
6394         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6395         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6396 }
6397
6398 /**
6399  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6400  * @pf: board private structure
6401  * @reinit: if the Main VSI needs to re-initialized.
6402  **/
6403 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6404 {
6405         struct i40e_hw *hw = &pf->hw;
6406         u8 set_fc_aq_fail = 0;
6407         i40e_status ret;
6408         u32 v;
6409
6410         /* Now we wait for GRST to settle out.
6411          * We don't have to delete the VEBs or VSIs from the hw switch
6412          * because the reset will make them disappear.
6413          */
6414         ret = i40e_pf_reset(hw);
6415         if (ret) {
6416                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6417                 set_bit(__I40E_RESET_FAILED, &pf->state);
6418                 goto clear_recovery;
6419         }
6420         pf->pfr_count++;
6421
6422         if (test_bit(__I40E_DOWN, &pf->state))
6423                 goto clear_recovery;
6424         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6425
6426         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6427         ret = i40e_init_adminq(&pf->hw);
6428         if (ret) {
6429                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6430                          i40e_stat_str(&pf->hw, ret),
6431                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6432                 goto clear_recovery;
6433         }
6434
6435         /* re-verify the eeprom if we just had an EMP reset */
6436         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6437                 i40e_verify_eeprom(pf);
6438
6439         i40e_clear_pxe_mode(hw);
6440         ret = i40e_get_capabilities(pf);
6441         if (ret)
6442                 goto end_core_reset;
6443
6444         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6445                                 hw->func_caps.num_rx_qp,
6446                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6447         if (ret) {
6448                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6449                 goto end_core_reset;
6450         }
6451         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6452         if (ret) {
6453                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6454                 goto end_core_reset;
6455         }
6456
6457 #ifdef CONFIG_I40E_DCB
6458         ret = i40e_init_pf_dcb(pf);
6459         if (ret) {
6460                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6461                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6462                 /* Continue without DCB enabled */
6463         }
6464 #endif /* CONFIG_I40E_DCB */
6465 #ifdef I40E_FCOE
6466         ret = i40e_init_pf_fcoe(pf);
6467         if (ret)
6468                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", ret);
6469
6470 #endif
6471         /* do basic switch setup */
6472         ret = i40e_setup_pf_switch(pf, reinit);
6473         if (ret)
6474                 goto end_core_reset;
6475
6476         /* driver is only interested in link up/down and module qualification
6477          * reports from firmware
6478          */
6479         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6480                                        I40E_AQ_EVENT_LINK_UPDOWN |
6481                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6482         if (ret)
6483                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6484                          i40e_stat_str(&pf->hw, ret),
6485                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6486
6487         /* make sure our flow control settings are restored */
6488         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6489         if (ret)
6490                 dev_info(&pf->pdev->dev, "set fc fail, err %s aq_err %s\n",
6491                          i40e_stat_str(&pf->hw, ret),
6492                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6493
6494         /* Rebuild the VSIs and VEBs that existed before reset.
6495          * They are still in our local switch element arrays, so only
6496          * need to rebuild the switch model in the HW.
6497          *
6498          * If there were VEBs but the reconstitution failed, we'll try
6499          * try to recover minimal use by getting the basic PF VSI working.
6500          */
6501         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6502                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6503                 /* find the one VEB connected to the MAC, and find orphans */
6504                 for (v = 0; v < I40E_MAX_VEB; v++) {
6505                         if (!pf->veb[v])
6506                                 continue;
6507
6508                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6509                             pf->veb[v]->uplink_seid == 0) {
6510                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6511
6512                                 if (!ret)
6513                                         continue;
6514
6515                                 /* If Main VEB failed, we're in deep doodoo,
6516                                  * so give up rebuilding the switch and set up
6517                                  * for minimal rebuild of PF VSI.
6518                                  * If orphan failed, we'll report the error
6519                                  * but try to keep going.
6520                                  */
6521                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6522                                         dev_info(&pf->pdev->dev,
6523                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6524                                                  ret);
6525                                         pf->vsi[pf->lan_vsi]->uplink_seid
6526                                                                 = pf->mac_seid;
6527                                         break;
6528                                 } else if (pf->veb[v]->uplink_seid == 0) {
6529                                         dev_info(&pf->pdev->dev,
6530                                                  "rebuild of orphan VEB failed: %d\n",
6531                                                  ret);
6532                                 }
6533                         }
6534                 }
6535         }
6536
6537         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6538                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6539                 /* no VEB, so rebuild only the Main VSI */
6540                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6541                 if (ret) {
6542                         dev_info(&pf->pdev->dev,
6543                                  "rebuild of Main VSI failed: %d\n", ret);
6544                         goto end_core_reset;
6545                 }
6546         }
6547
6548         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
6549             (pf->hw.aq.fw_maj_ver < 4)) {
6550                 msleep(75);
6551                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6552                 if (ret)
6553                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6554                                  i40e_stat_str(&pf->hw, ret),
6555                                  i40e_aq_str(&pf->hw,
6556                                              pf->hw.aq.asq_last_status));
6557         }
6558         /* reinit the misc interrupt */
6559         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6560                 ret = i40e_setup_misc_vector(pf);
6561
6562         /* restart the VSIs that were rebuilt and running before the reset */
6563         i40e_pf_unquiesce_all_vsi(pf);
6564
6565         if (pf->num_alloc_vfs) {
6566                 for (v = 0; v < pf->num_alloc_vfs; v++)
6567                         i40e_reset_vf(&pf->vf[v], true);
6568         }
6569
6570         /* tell the firmware that we're starting */
6571         i40e_send_version(pf);
6572
6573 end_core_reset:
6574         clear_bit(__I40E_RESET_FAILED, &pf->state);
6575 clear_recovery:
6576         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6577 }
6578
6579 /**
6580  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6581  * @pf: board private structure
6582  *
6583  * Close up the VFs and other things in prep for a Core Reset,
6584  * then get ready to rebuild the world.
6585  **/
6586 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6587 {
6588         i40e_prep_for_reset(pf);
6589         i40e_reset_and_rebuild(pf, false);
6590 }
6591
6592 /**
6593  * i40e_handle_mdd_event
6594  * @pf: pointer to the PF structure
6595  *
6596  * Called from the MDD irq handler to identify possibly malicious vfs
6597  **/
6598 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6599 {
6600         struct i40e_hw *hw = &pf->hw;
6601         bool mdd_detected = false;
6602         bool pf_mdd_detected = false;
6603         struct i40e_vf *vf;
6604         u32 reg;
6605         int i;
6606
6607         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6608                 return;
6609
6610         /* find what triggered the MDD event */
6611         reg = rd32(hw, I40E_GL_MDET_TX);
6612         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6613                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6614                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6615                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6616                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6617                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6618                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6619                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6620                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6621                                 pf->hw.func_caps.base_queue;
6622                 if (netif_msg_tx_err(pf))
6623                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6624                                  event, queue, pf_num, vf_num);
6625                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6626                 mdd_detected = true;
6627         }
6628         reg = rd32(hw, I40E_GL_MDET_RX);
6629         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6630                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6631                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6632                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6633                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6634                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6635                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6636                                 pf->hw.func_caps.base_queue;
6637                 if (netif_msg_rx_err(pf))
6638                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6639                                  event, queue, func);
6640                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6641                 mdd_detected = true;
6642         }
6643
6644         if (mdd_detected) {
6645                 reg = rd32(hw, I40E_PF_MDET_TX);
6646                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6647                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6648                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6649                         pf_mdd_detected = true;
6650                 }
6651                 reg = rd32(hw, I40E_PF_MDET_RX);
6652                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6653                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6654                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6655                         pf_mdd_detected = true;
6656                 }
6657                 /* Queue belongs to the PF, initiate a reset */
6658                 if (pf_mdd_detected) {
6659                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6660                         i40e_service_event_schedule(pf);
6661                 }
6662         }
6663
6664         /* see if one of the VFs needs its hand slapped */
6665         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6666                 vf = &(pf->vf[i]);
6667                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6668                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6669                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6670                         vf->num_mdd_events++;
6671                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6672                                  i);
6673                 }
6674
6675                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6676                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6677                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6678                         vf->num_mdd_events++;
6679                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6680                                  i);
6681                 }
6682
6683                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6684                         dev_info(&pf->pdev->dev,
6685                                  "Too many MDD events on VF %d, disabled\n", i);
6686                         dev_info(&pf->pdev->dev,
6687                                  "Use PF Control I/F to re-enable the VF\n");
6688                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6689                 }
6690         }
6691
6692         /* re-enable mdd interrupt cause */
6693         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6694         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6695         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6696         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6697         i40e_flush(hw);
6698 }
6699
6700 #ifdef CONFIG_I40E_VXLAN
6701 /**
6702  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6703  * @pf: board private structure
6704  **/
6705 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6706 {
6707         struct i40e_hw *hw = &pf->hw;
6708         i40e_status ret;
6709         __be16 port;
6710         int i;
6711
6712         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
6713                 return;
6714
6715         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
6716
6717         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6718                 if (pf->pending_vxlan_bitmap & BIT_ULL(i)) {
6719                         pf->pending_vxlan_bitmap &= ~BIT_ULL(i);
6720                         port = pf->vxlan_ports[i];
6721                         if (port)
6722                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
6723                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
6724                                                      NULL, NULL);
6725                         else
6726                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
6727
6728                         if (ret) {
6729                                 dev_info(&pf->pdev->dev,
6730                                          "%s vxlan port %d, index %d failed, err %s aq_err %s\n",
6731                                          port ? "add" : "delete",
6732                                          ntohs(port), i,
6733                                          i40e_stat_str(&pf->hw, ret),
6734                                          i40e_aq_str(&pf->hw,
6735                                                     pf->hw.aq.asq_last_status));
6736                                 pf->vxlan_ports[i] = 0;
6737                         }
6738                 }
6739         }
6740 }
6741
6742 #endif
6743 /**
6744  * i40e_service_task - Run the driver's async subtasks
6745  * @work: pointer to work_struct containing our data
6746  **/
6747 static void i40e_service_task(struct work_struct *work)
6748 {
6749         struct i40e_pf *pf = container_of(work,
6750                                           struct i40e_pf,
6751                                           service_task);
6752         unsigned long start_time = jiffies;
6753
6754         /* don't bother with service tasks if a reset is in progress */
6755         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6756                 i40e_service_event_complete(pf);
6757                 return;
6758         }
6759
6760         i40e_reset_subtask(pf);
6761         i40e_handle_mdd_event(pf);
6762         i40e_vc_process_vflr_event(pf);
6763         i40e_watchdog_subtask(pf);
6764         i40e_fdir_reinit_subtask(pf);
6765         i40e_sync_filters_subtask(pf);
6766 #ifdef CONFIG_I40E_VXLAN
6767         i40e_sync_vxlan_filters_subtask(pf);
6768 #endif
6769         i40e_clean_adminq_subtask(pf);
6770
6771         i40e_service_event_complete(pf);
6772
6773         /* If the tasks have taken longer than one timer cycle or there
6774          * is more work to be done, reschedule the service task now
6775          * rather than wait for the timer to tick again.
6776          */
6777         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
6778             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
6779             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
6780             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
6781                 i40e_service_event_schedule(pf);
6782 }
6783
6784 /**
6785  * i40e_service_timer - timer callback
6786  * @data: pointer to PF struct
6787  **/
6788 static void i40e_service_timer(unsigned long data)
6789 {
6790         struct i40e_pf *pf = (struct i40e_pf *)data;
6791
6792         mod_timer(&pf->service_timer,
6793                   round_jiffies(jiffies + pf->service_timer_period));
6794         i40e_service_event_schedule(pf);
6795 }
6796
6797 /**
6798  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6799  * @vsi: the VSI being configured
6800  **/
6801 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6802 {
6803         struct i40e_pf *pf = vsi->back;
6804
6805         switch (vsi->type) {
6806         case I40E_VSI_MAIN:
6807                 vsi->alloc_queue_pairs = pf->num_lan_qps;
6808                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6809                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6810                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6811                         vsi->num_q_vectors = pf->num_lan_msix;
6812                 else
6813                         vsi->num_q_vectors = 1;
6814
6815                 break;
6816
6817         case I40E_VSI_FDIR:
6818                 vsi->alloc_queue_pairs = 1;
6819                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6820                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6821                 vsi->num_q_vectors = 1;
6822                 break;
6823
6824         case I40E_VSI_VMDQ2:
6825                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6826                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6827                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6828                 vsi->num_q_vectors = pf->num_vmdq_msix;
6829                 break;
6830
6831         case I40E_VSI_SRIOV:
6832                 vsi->alloc_queue_pairs = pf->num_vf_qps;
6833                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6834                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6835                 break;
6836
6837 #ifdef I40E_FCOE
6838         case I40E_VSI_FCOE:
6839                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
6840                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6841                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6842                 vsi->num_q_vectors = pf->num_fcoe_msix;
6843                 break;
6844
6845 #endif /* I40E_FCOE */
6846         default:
6847                 WARN_ON(1);
6848                 return -ENODATA;
6849         }
6850
6851         return 0;
6852 }
6853
6854 /**
6855  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6856  * @type: VSI pointer
6857  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6858  *
6859  * On error: returns error code (negative)
6860  * On success: returns 0
6861  **/
6862 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6863 {
6864         int size;
6865         int ret = 0;
6866
6867         /* allocate memory for both Tx and Rx ring pointers */
6868         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6869         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6870         if (!vsi->tx_rings)
6871                 return -ENOMEM;
6872         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6873
6874         if (alloc_qvectors) {
6875                 /* allocate memory for q_vector pointers */
6876                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
6877                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6878                 if (!vsi->q_vectors) {
6879                         ret = -ENOMEM;
6880                         goto err_vectors;
6881                 }
6882         }
6883         return ret;
6884
6885 err_vectors:
6886         kfree(vsi->tx_rings);
6887         return ret;
6888 }
6889
6890 /**
6891  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
6892  * @pf: board private structure
6893  * @type: type of VSI
6894  *
6895  * On error: returns error code (negative)
6896  * On success: returns vsi index in PF (positive)
6897  **/
6898 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
6899 {
6900         int ret = -ENODEV;
6901         struct i40e_vsi *vsi;
6902         int vsi_idx;
6903         int i;
6904
6905         /* Need to protect the allocation of the VSIs at the PF level */
6906         mutex_lock(&pf->switch_mutex);
6907
6908         /* VSI list may be fragmented if VSI creation/destruction has
6909          * been happening.  We can afford to do a quick scan to look
6910          * for any free VSIs in the list.
6911          *
6912          * find next empty vsi slot, looping back around if necessary
6913          */
6914         i = pf->next_vsi;
6915         while (i < pf->num_alloc_vsi && pf->vsi[i])
6916                 i++;
6917         if (i >= pf->num_alloc_vsi) {
6918                 i = 0;
6919                 while (i < pf->next_vsi && pf->vsi[i])
6920                         i++;
6921         }
6922
6923         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
6924                 vsi_idx = i;             /* Found one! */
6925         } else {
6926                 ret = -ENODEV;
6927                 goto unlock_pf;  /* out of VSI slots! */
6928         }
6929         pf->next_vsi = ++i;
6930
6931         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
6932         if (!vsi) {
6933                 ret = -ENOMEM;
6934                 goto unlock_pf;
6935         }
6936         vsi->type = type;
6937         vsi->back = pf;
6938         set_bit(__I40E_DOWN, &vsi->state);
6939         vsi->flags = 0;
6940         vsi->idx = vsi_idx;
6941         vsi->rx_itr_setting = pf->rx_itr_default;
6942         vsi->tx_itr_setting = pf->tx_itr_default;
6943         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
6944                                 pf->rss_table_size : 64;
6945         vsi->netdev_registered = false;
6946         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
6947         INIT_LIST_HEAD(&vsi->mac_filter_list);
6948         vsi->irqs_ready = false;
6949
6950         ret = i40e_set_num_rings_in_vsi(vsi);
6951         if (ret)
6952                 goto err_rings;
6953
6954         ret = i40e_vsi_alloc_arrays(vsi, true);
6955         if (ret)
6956                 goto err_rings;
6957
6958         /* Setup default MSIX irq handler for VSI */
6959         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
6960
6961         pf->vsi[vsi_idx] = vsi;
6962         ret = vsi_idx;
6963         goto unlock_pf;
6964
6965 err_rings:
6966         pf->next_vsi = i - 1;
6967         kfree(vsi);
6968 unlock_pf:
6969         mutex_unlock(&pf->switch_mutex);
6970         return ret;
6971 }
6972
6973 /**
6974  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
6975  * @type: VSI pointer
6976  * @free_qvectors: a bool to specify if q_vectors need to be freed.
6977  *
6978  * On error: returns error code (negative)
6979  * On success: returns 0
6980  **/
6981 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
6982 {
6983         /* free the ring and vector containers */
6984         if (free_qvectors) {
6985                 kfree(vsi->q_vectors);
6986                 vsi->q_vectors = NULL;
6987         }
6988         kfree(vsi->tx_rings);
6989         vsi->tx_rings = NULL;
6990         vsi->rx_rings = NULL;
6991 }
6992
6993 /**
6994  * i40e_vsi_clear - Deallocate the VSI provided
6995  * @vsi: the VSI being un-configured
6996  **/
6997 static int i40e_vsi_clear(struct i40e_vsi *vsi)
6998 {
6999         struct i40e_pf *pf;
7000
7001         if (!vsi)
7002                 return 0;
7003
7004         if (!vsi->back)
7005                 goto free_vsi;
7006         pf = vsi->back;
7007
7008         mutex_lock(&pf->switch_mutex);
7009         if (!pf->vsi[vsi->idx]) {
7010                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7011                         vsi->idx, vsi->idx, vsi, vsi->type);
7012                 goto unlock_vsi;
7013         }
7014
7015         if (pf->vsi[vsi->idx] != vsi) {
7016                 dev_err(&pf->pdev->dev,
7017                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7018                         pf->vsi[vsi->idx]->idx,
7019                         pf->vsi[vsi->idx],
7020                         pf->vsi[vsi->idx]->type,
7021                         vsi->idx, vsi, vsi->type);
7022                 goto unlock_vsi;
7023         }
7024
7025         /* updates the PF for this cleared vsi */
7026         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7027         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7028
7029         i40e_vsi_free_arrays(vsi, true);
7030
7031         pf->vsi[vsi->idx] = NULL;
7032         if (vsi->idx < pf->next_vsi)
7033                 pf->next_vsi = vsi->idx;
7034
7035 unlock_vsi:
7036         mutex_unlock(&pf->switch_mutex);
7037 free_vsi:
7038         kfree(vsi);
7039
7040         return 0;
7041 }
7042
7043 /**
7044  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7045  * @vsi: the VSI being cleaned
7046  **/
7047 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7048 {
7049         int i;
7050
7051         if (vsi->tx_rings && vsi->tx_rings[0]) {
7052                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7053                         kfree_rcu(vsi->tx_rings[i], rcu);
7054                         vsi->tx_rings[i] = NULL;
7055                         vsi->rx_rings[i] = NULL;
7056                 }
7057         }
7058 }
7059
7060 /**
7061  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7062  * @vsi: the VSI being configured
7063  **/
7064 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7065 {
7066         struct i40e_ring *tx_ring, *rx_ring;
7067         struct i40e_pf *pf = vsi->back;
7068         int i;
7069
7070         /* Set basic values in the rings to be used later during open() */
7071         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7072                 /* allocate space for both Tx and Rx in one shot */
7073                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7074                 if (!tx_ring)
7075                         goto err_out;
7076
7077                 tx_ring->queue_index = i;
7078                 tx_ring->reg_idx = vsi->base_queue + i;
7079                 tx_ring->ring_active = false;
7080                 tx_ring->vsi = vsi;
7081                 tx_ring->netdev = vsi->netdev;
7082                 tx_ring->dev = &pf->pdev->dev;
7083                 tx_ring->count = vsi->num_desc;
7084                 tx_ring->size = 0;
7085                 tx_ring->dcb_tc = 0;
7086                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7087                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7088                 if (vsi->back->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE)
7089                         tx_ring->flags |= I40E_TXR_FLAGS_OUTER_UDP_CSUM;
7090                 vsi->tx_rings[i] = tx_ring;
7091
7092                 rx_ring = &tx_ring[1];
7093                 rx_ring->queue_index = i;
7094                 rx_ring->reg_idx = vsi->base_queue + i;
7095                 rx_ring->ring_active = false;
7096                 rx_ring->vsi = vsi;
7097                 rx_ring->netdev = vsi->netdev;
7098                 rx_ring->dev = &pf->pdev->dev;
7099                 rx_ring->count = vsi->num_desc;
7100                 rx_ring->size = 0;
7101                 rx_ring->dcb_tc = 0;
7102                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
7103                         set_ring_16byte_desc_enabled(rx_ring);
7104                 else
7105                         clear_ring_16byte_desc_enabled(rx_ring);
7106                 vsi->rx_rings[i] = rx_ring;
7107         }
7108
7109         return 0;
7110
7111 err_out:
7112         i40e_vsi_clear_rings(vsi);
7113         return -ENOMEM;
7114 }
7115
7116 /**
7117  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7118  * @pf: board private structure
7119  * @vectors: the number of MSI-X vectors to request
7120  *
7121  * Returns the number of vectors reserved, or error
7122  **/
7123 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7124 {
7125         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7126                                         I40E_MIN_MSIX, vectors);
7127         if (vectors < 0) {
7128                 dev_info(&pf->pdev->dev,
7129                          "MSI-X vector reservation failed: %d\n", vectors);
7130                 vectors = 0;
7131         }
7132
7133         return vectors;
7134 }
7135
7136 /**
7137  * i40e_init_msix - Setup the MSIX capability
7138  * @pf: board private structure
7139  *
7140  * Work with the OS to set up the MSIX vectors needed.
7141  *
7142  * Returns the number of vectors reserved or negative on failure
7143  **/
7144 static int i40e_init_msix(struct i40e_pf *pf)
7145 {
7146         struct i40e_hw *hw = &pf->hw;
7147         int vectors_left;
7148         int v_budget, i;
7149         int v_actual;
7150
7151         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7152                 return -ENODEV;
7153
7154         /* The number of vectors we'll request will be comprised of:
7155          *   - Add 1 for "other" cause for Admin Queue events, etc.
7156          *   - The number of LAN queue pairs
7157          *      - Queues being used for RSS.
7158          *              We don't need as many as max_rss_size vectors.
7159          *              use rss_size instead in the calculation since that
7160          *              is governed by number of cpus in the system.
7161          *      - assumes symmetric Tx/Rx pairing
7162          *   - The number of VMDq pairs
7163 #ifdef I40E_FCOE
7164          *   - The number of FCOE qps.
7165 #endif
7166          * Once we count this up, try the request.
7167          *
7168          * If we can't get what we want, we'll simplify to nearly nothing
7169          * and try again.  If that still fails, we punt.
7170          */
7171         vectors_left = hw->func_caps.num_msix_vectors;
7172         v_budget = 0;
7173
7174         /* reserve one vector for miscellaneous handler */
7175         if (vectors_left) {
7176                 v_budget++;
7177                 vectors_left--;
7178         }
7179
7180         /* reserve vectors for the main PF traffic queues */
7181         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7182         vectors_left -= pf->num_lan_msix;
7183         v_budget += pf->num_lan_msix;
7184
7185         /* reserve one vector for sideband flow director */
7186         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7187                 if (vectors_left) {
7188                         v_budget++;
7189                         vectors_left--;
7190                 } else {
7191                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7192                 }
7193         }
7194
7195 #ifdef I40E_FCOE
7196         /* can we reserve enough for FCoE? */
7197         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7198                 if (!vectors_left)
7199                         pf->num_fcoe_msix = 0;
7200                 else if (vectors_left >= pf->num_fcoe_qps)
7201                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7202                 else
7203                         pf->num_fcoe_msix = 1;
7204                 v_budget += pf->num_fcoe_msix;
7205                 vectors_left -= pf->num_fcoe_msix;
7206         }
7207
7208 #endif
7209         /* any vectors left over go for VMDq support */
7210         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7211                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7212                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7213
7214                 /* if we're short on vectors for what's desired, we limit
7215                  * the queues per vmdq.  If this is still more than are
7216                  * available, the user will need to change the number of
7217                  * queues/vectors used by the PF later with the ethtool
7218                  * channels command
7219                  */
7220                 if (vmdq_vecs < vmdq_vecs_wanted)
7221                         pf->num_vmdq_qps = 1;
7222                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7223
7224                 v_budget += vmdq_vecs;
7225                 vectors_left -= vmdq_vecs;
7226         }
7227
7228         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7229                                    GFP_KERNEL);
7230         if (!pf->msix_entries)
7231                 return -ENOMEM;
7232
7233         for (i = 0; i < v_budget; i++)
7234                 pf->msix_entries[i].entry = i;
7235         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7236
7237         if (v_actual != v_budget) {
7238                 /* If we have limited resources, we will start with no vectors
7239                  * for the special features and then allocate vectors to some
7240                  * of these features based on the policy and at the end disable
7241                  * the features that did not get any vectors.
7242                  */
7243 #ifdef I40E_FCOE
7244                 pf->num_fcoe_qps = 0;
7245                 pf->num_fcoe_msix = 0;
7246 #endif
7247                 pf->num_vmdq_msix = 0;
7248         }
7249
7250         if (v_actual < I40E_MIN_MSIX) {
7251                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7252                 kfree(pf->msix_entries);
7253                 pf->msix_entries = NULL;
7254                 return -ENODEV;
7255
7256         } else if (v_actual == I40E_MIN_MSIX) {
7257                 /* Adjust for minimal MSIX use */
7258                 pf->num_vmdq_vsis = 0;
7259                 pf->num_vmdq_qps = 0;
7260                 pf->num_lan_qps = 1;
7261                 pf->num_lan_msix = 1;
7262
7263         } else if (v_actual != v_budget) {
7264                 int vec;
7265
7266                 /* reserve the misc vector */
7267                 vec = v_actual - 1;
7268
7269                 /* Scale vector usage down */
7270                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7271                 pf->num_vmdq_vsis = 1;
7272                 pf->num_vmdq_qps = 1;
7273                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7274
7275                 /* partition out the remaining vectors */
7276                 switch (vec) {
7277                 case 2:
7278                         pf->num_lan_msix = 1;
7279                         break;
7280                 case 3:
7281 #ifdef I40E_FCOE
7282                         /* give one vector to FCoE */
7283                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7284                                 pf->num_lan_msix = 1;
7285                                 pf->num_fcoe_msix = 1;
7286                         }
7287 #else
7288                         pf->num_lan_msix = 2;
7289 #endif
7290                         break;
7291                 default:
7292 #ifdef I40E_FCOE
7293                         /* give one vector to FCoE */
7294                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7295                                 pf->num_fcoe_msix = 1;
7296                                 vec--;
7297                         }
7298 #endif
7299                         /* give the rest to the PF */
7300                         pf->num_lan_msix = min_t(int, vec, pf->num_lan_qps);
7301                         break;
7302                 }
7303         }
7304
7305         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7306             (pf->num_vmdq_msix == 0)) {
7307                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7308                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7309         }
7310 #ifdef I40E_FCOE
7311
7312         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7313                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7314                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7315         }
7316 #endif
7317         return v_actual;
7318 }
7319
7320 /**
7321  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7322  * @vsi: the VSI being configured
7323  * @v_idx: index of the vector in the vsi struct
7324  *
7325  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7326  **/
7327 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7328 {
7329         struct i40e_q_vector *q_vector;
7330
7331         /* allocate q_vector */
7332         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7333         if (!q_vector)
7334                 return -ENOMEM;
7335
7336         q_vector->vsi = vsi;
7337         q_vector->v_idx = v_idx;
7338         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7339         if (vsi->netdev)
7340                 netif_napi_add(vsi->netdev, &q_vector->napi,
7341                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7342
7343         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7344         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7345
7346         /* tie q_vector and vsi together */
7347         vsi->q_vectors[v_idx] = q_vector;
7348
7349         return 0;
7350 }
7351
7352 /**
7353  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7354  * @vsi: the VSI being configured
7355  *
7356  * We allocate one q_vector per queue interrupt.  If allocation fails we
7357  * return -ENOMEM.
7358  **/
7359 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7360 {
7361         struct i40e_pf *pf = vsi->back;
7362         int v_idx, num_q_vectors;
7363         int err;
7364
7365         /* if not MSIX, give the one vector only to the LAN VSI */
7366         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7367                 num_q_vectors = vsi->num_q_vectors;
7368         else if (vsi == pf->vsi[pf->lan_vsi])
7369                 num_q_vectors = 1;
7370         else
7371                 return -EINVAL;
7372
7373         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7374                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7375                 if (err)
7376                         goto err_out;
7377         }
7378
7379         return 0;
7380
7381 err_out:
7382         while (v_idx--)
7383                 i40e_free_q_vector(vsi, v_idx);
7384
7385         return err;
7386 }
7387
7388 /**
7389  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7390  * @pf: board private structure to initialize
7391  **/
7392 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7393 {
7394         int vectors = 0;
7395         ssize_t size;
7396
7397         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7398                 vectors = i40e_init_msix(pf);
7399                 if (vectors < 0) {
7400                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7401 #ifdef I40E_FCOE
7402                                        I40E_FLAG_FCOE_ENABLED   |
7403 #endif
7404                                        I40E_FLAG_RSS_ENABLED    |
7405                                        I40E_FLAG_DCB_CAPABLE    |
7406                                        I40E_FLAG_SRIOV_ENABLED  |
7407                                        I40E_FLAG_FD_SB_ENABLED  |
7408                                        I40E_FLAG_FD_ATR_ENABLED |
7409                                        I40E_FLAG_VMDQ_ENABLED);
7410
7411                         /* rework the queue expectations without MSIX */
7412                         i40e_determine_queue_usage(pf);
7413                 }
7414         }
7415
7416         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7417             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7418                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7419                 vectors = pci_enable_msi(pf->pdev);
7420                 if (vectors < 0) {
7421                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7422                                  vectors);
7423                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7424                 }
7425                 vectors = 1;  /* one MSI or Legacy vector */
7426         }
7427
7428         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7429                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7430
7431         /* set up vector assignment tracking */
7432         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7433         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7434         if (!pf->irq_pile) {
7435                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7436                 return -ENOMEM;
7437         }
7438         pf->irq_pile->num_entries = vectors;
7439         pf->irq_pile->search_hint = 0;
7440
7441         /* track first vector for misc interrupts, ignore return */
7442         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7443
7444         return 0;
7445 }
7446
7447 /**
7448  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7449  * @pf: board private structure
7450  *
7451  * This sets up the handler for MSIX 0, which is used to manage the
7452  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7453  * when in MSI or Legacy interrupt mode.
7454  **/
7455 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7456 {
7457         struct i40e_hw *hw = &pf->hw;
7458         int err = 0;
7459
7460         /* Only request the irq if this is the first time through, and
7461          * not when we're rebuilding after a Reset
7462          */
7463         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7464                 err = request_irq(pf->msix_entries[0].vector,
7465                                   i40e_intr, 0, pf->int_name, pf);
7466                 if (err) {
7467                         dev_info(&pf->pdev->dev,
7468                                  "request_irq for %s failed: %d\n",
7469                                  pf->int_name, err);
7470                         return -EFAULT;
7471                 }
7472         }
7473
7474         i40e_enable_misc_int_causes(pf);
7475
7476         /* associate no queues to the misc vector */
7477         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7478         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7479
7480         i40e_flush(hw);
7481
7482         i40e_irq_dynamic_enable_icr0(pf);
7483
7484         return err;
7485 }
7486
7487 /**
7488  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7489  * @vsi: vsi structure
7490  * @seed: RSS hash seed
7491  **/
7492 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed)
7493 {
7494         struct i40e_aqc_get_set_rss_key_data rss_key;
7495         struct i40e_pf *pf = vsi->back;
7496         struct i40e_hw *hw = &pf->hw;
7497         bool pf_lut = false;
7498         u8 *rss_lut;
7499         int ret, i;
7500
7501         memset(&rss_key, 0, sizeof(rss_key));
7502         memcpy(&rss_key, seed, sizeof(rss_key));
7503
7504         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7505         if (!rss_lut)
7506                 return -ENOMEM;
7507
7508         /* Populate the LUT with max no. of queues in round robin fashion */
7509         for (i = 0; i < vsi->rss_table_size; i++)
7510                 rss_lut[i] = i % vsi->rss_size;
7511
7512         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
7513         if (ret) {
7514                 dev_info(&pf->pdev->dev,
7515                          "Cannot set RSS key, err %s aq_err %s\n",
7516                          i40e_stat_str(&pf->hw, ret),
7517                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7518                 return ret;
7519         }
7520
7521         if (vsi->type == I40E_VSI_MAIN)
7522                 pf_lut = true;
7523
7524         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
7525                                   vsi->rss_table_size);
7526         if (ret)
7527                 dev_info(&pf->pdev->dev,
7528                          "Cannot set RSS lut, err %s aq_err %s\n",
7529                          i40e_stat_str(&pf->hw, ret),
7530                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7531
7532         return ret;
7533 }
7534
7535 /**
7536  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
7537  * @vsi: VSI structure
7538  **/
7539 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
7540 {
7541         u8 seed[I40E_HKEY_ARRAY_SIZE];
7542         struct i40e_pf *pf = vsi->back;
7543
7544         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7545         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7546
7547         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7548                 return i40e_config_rss_aq(vsi, seed);
7549
7550         return 0;
7551 }
7552
7553 /**
7554  * i40e_config_rss_reg - Prepare for RSS if used
7555  * @pf: board private structure
7556  * @seed: RSS hash seed
7557  **/
7558 static int i40e_config_rss_reg(struct i40e_pf *pf, const u8 *seed)
7559 {
7560         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7561         struct i40e_hw *hw = &pf->hw;
7562         u32 *seed_dw = (u32 *)seed;
7563         u32 current_queue = 0;
7564         u32 lut = 0;
7565         int i, j;
7566
7567         /* Fill out hash function seed */
7568         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7569                 wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
7570
7571         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++) {
7572                 lut = 0;
7573                 for (j = 0; j < 4; j++) {
7574                         if (current_queue == vsi->rss_size)
7575                                 current_queue = 0;
7576                         lut |= ((current_queue) << (8 * j));
7577                         current_queue++;
7578                 }
7579                 wr32(&pf->hw, I40E_PFQF_HLUT(i), lut);
7580         }
7581         i40e_flush(hw);
7582
7583         return 0;
7584 }
7585
7586 /**
7587  * i40e_config_rss - Prepare for RSS if used
7588  * @pf: board private structure
7589  **/
7590 static int i40e_config_rss(struct i40e_pf *pf)
7591 {
7592         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7593         u8 seed[I40E_HKEY_ARRAY_SIZE];
7594         struct i40e_hw *hw = &pf->hw;
7595         u32 reg_val;
7596         u64 hena;
7597
7598         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7599
7600         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
7601         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
7602                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
7603         hena |= i40e_pf_get_default_rss_hena(pf);
7604
7605         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
7606         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
7607
7608         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7609
7610         /* Determine the RSS table size based on the hardware capabilities */
7611         reg_val = rd32(hw, I40E_PFQF_CTL_0);
7612         reg_val = (pf->rss_table_size == 512) ?
7613                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
7614                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
7615         wr32(hw, I40E_PFQF_CTL_0, reg_val);
7616
7617         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7618                 return i40e_config_rss_aq(pf->vsi[pf->lan_vsi], seed);
7619         else
7620                 return i40e_config_rss_reg(pf, seed);
7621 }
7622
7623 /**
7624  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7625  * @pf: board private structure
7626  * @queue_count: the requested queue count for rss.
7627  *
7628  * returns 0 if rss is not enabled, if enabled returns the final rss queue
7629  * count which may be different from the requested queue count.
7630  **/
7631 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7632 {
7633         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7634         int new_rss_size;
7635
7636         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7637                 return 0;
7638
7639         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
7640
7641         if (queue_count != vsi->num_queue_pairs) {
7642                 vsi->req_queue_pairs = queue_count;
7643                 i40e_prep_for_reset(pf);
7644
7645                 pf->rss_size = new_rss_size;
7646
7647                 i40e_reset_and_rebuild(pf, true);
7648                 i40e_config_rss(pf);
7649         }
7650         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
7651         return pf->rss_size;
7652 }
7653
7654 /**
7655  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
7656  * @pf: board private structure
7657  **/
7658 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
7659 {
7660         i40e_status status;
7661         bool min_valid, max_valid;
7662         u32 max_bw, min_bw;
7663
7664         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
7665                                            &min_valid, &max_valid);
7666
7667         if (!status) {
7668                 if (min_valid)
7669                         pf->npar_min_bw = min_bw;
7670                 if (max_valid)
7671                         pf->npar_max_bw = max_bw;
7672         }
7673
7674         return status;
7675 }
7676
7677 /**
7678  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
7679  * @pf: board private structure
7680  **/
7681 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
7682 {
7683         struct i40e_aqc_configure_partition_bw_data bw_data;
7684         i40e_status status;
7685
7686         /* Set the valid bit for this PF */
7687         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
7688         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
7689         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
7690
7691         /* Set the new bandwidths */
7692         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
7693
7694         return status;
7695 }
7696
7697 /**
7698  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
7699  * @pf: board private structure
7700  **/
7701 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
7702 {
7703         /* Commit temporary BW setting to permanent NVM image */
7704         enum i40e_admin_queue_err last_aq_status;
7705         i40e_status ret;
7706         u16 nvm_word;
7707
7708         if (pf->hw.partition_id != 1) {
7709                 dev_info(&pf->pdev->dev,
7710                          "Commit BW only works on partition 1! This is partition %d",
7711                          pf->hw.partition_id);
7712                 ret = I40E_NOT_SUPPORTED;
7713                 goto bw_commit_out;
7714         }
7715
7716         /* Acquire NVM for read access */
7717         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
7718         last_aq_status = pf->hw.aq.asq_last_status;
7719         if (ret) {
7720                 dev_info(&pf->pdev->dev,
7721                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
7722                          i40e_stat_str(&pf->hw, ret),
7723                          i40e_aq_str(&pf->hw, last_aq_status));
7724                 goto bw_commit_out;
7725         }
7726
7727         /* Read word 0x10 of NVM - SW compatibility word 1 */
7728         ret = i40e_aq_read_nvm(&pf->hw,
7729                                I40E_SR_NVM_CONTROL_WORD,
7730                                0x10, sizeof(nvm_word), &nvm_word,
7731                                false, NULL);
7732         /* Save off last admin queue command status before releasing
7733          * the NVM
7734          */
7735         last_aq_status = pf->hw.aq.asq_last_status;
7736         i40e_release_nvm(&pf->hw);
7737         if (ret) {
7738                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
7739                          i40e_stat_str(&pf->hw, ret),
7740                          i40e_aq_str(&pf->hw, last_aq_status));
7741                 goto bw_commit_out;
7742         }
7743
7744         /* Wait a bit for NVM release to complete */
7745         msleep(50);
7746
7747         /* Acquire NVM for write access */
7748         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
7749         last_aq_status = pf->hw.aq.asq_last_status;
7750         if (ret) {
7751                 dev_info(&pf->pdev->dev,
7752                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
7753                          i40e_stat_str(&pf->hw, ret),
7754                          i40e_aq_str(&pf->hw, last_aq_status));
7755                 goto bw_commit_out;
7756         }
7757         /* Write it back out unchanged to initiate update NVM,
7758          * which will force a write of the shadow (alt) RAM to
7759          * the NVM - thus storing the bandwidth values permanently.
7760          */
7761         ret = i40e_aq_update_nvm(&pf->hw,
7762                                  I40E_SR_NVM_CONTROL_WORD,
7763                                  0x10, sizeof(nvm_word),
7764                                  &nvm_word, true, NULL);
7765         /* Save off last admin queue command status before releasing
7766          * the NVM
7767          */
7768         last_aq_status = pf->hw.aq.asq_last_status;
7769         i40e_release_nvm(&pf->hw);
7770         if (ret)
7771                 dev_info(&pf->pdev->dev,
7772                          "BW settings NOT SAVED, err %s aq_err %s\n",
7773                          i40e_stat_str(&pf->hw, ret),
7774                          i40e_aq_str(&pf->hw, last_aq_status));
7775 bw_commit_out:
7776
7777         return ret;
7778 }
7779
7780 /**
7781  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
7782  * @pf: board private structure to initialize
7783  *
7784  * i40e_sw_init initializes the Adapter private data structure.
7785  * Fields are initialized based on PCI device information and
7786  * OS network device settings (MTU size).
7787  **/
7788 static int i40e_sw_init(struct i40e_pf *pf)
7789 {
7790         int err = 0;
7791         int size;
7792
7793         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
7794                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
7795         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
7796         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
7797                 if (I40E_DEBUG_USER & debug)
7798                         pf->hw.debug_mask = debug;
7799                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
7800                                                 I40E_DEFAULT_MSG_ENABLE);
7801         }
7802
7803         /* Set default capability flags */
7804         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
7805                     I40E_FLAG_MSI_ENABLED     |
7806                     I40E_FLAG_MSIX_ENABLED;
7807
7808         if (iommu_present(&pci_bus_type))
7809                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
7810         else
7811                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
7812
7813         /* Set default ITR */
7814         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
7815         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
7816
7817         /* Depending on PF configurations, it is possible that the RSS
7818          * maximum might end up larger than the available queues
7819          */
7820         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
7821         pf->rss_size = 1;
7822         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
7823         pf->rss_size_max = min_t(int, pf->rss_size_max,
7824                                  pf->hw.func_caps.num_tx_qp);
7825         if (pf->hw.func_caps.rss) {
7826                 pf->flags |= I40E_FLAG_RSS_ENABLED;
7827                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
7828         }
7829
7830         /* MFP mode enabled */
7831         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
7832                 pf->flags |= I40E_FLAG_MFP_ENABLED;
7833                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
7834                 if (i40e_get_npar_bw_setting(pf))
7835                         dev_warn(&pf->pdev->dev,
7836                                  "Could not get NPAR bw settings\n");
7837                 else
7838                         dev_info(&pf->pdev->dev,
7839                                  "Min BW = %8.8x, Max BW = %8.8x\n",
7840                                  pf->npar_min_bw, pf->npar_max_bw);
7841         }
7842
7843         /* FW/NVM is not yet fixed in this regard */
7844         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
7845             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
7846                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7847                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
7848                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
7849                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7850                 } else {
7851                         dev_info(&pf->pdev->dev,
7852                                  "Flow Director Sideband mode Disabled in MFP mode\n");
7853                 }
7854                 pf->fdir_pf_filter_count =
7855                                  pf->hw.func_caps.fd_filters_guaranteed;
7856                 pf->hw.fdir_shared_filter_count =
7857                                  pf->hw.func_caps.fd_filters_best_effort;
7858         }
7859
7860         if (pf->hw.func_caps.vmdq) {
7861                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
7862                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
7863         }
7864
7865 #ifdef I40E_FCOE
7866         err = i40e_init_pf_fcoe(pf);
7867         if (err)
7868                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", err);
7869
7870 #endif /* I40E_FCOE */
7871 #ifdef CONFIG_PCI_IOV
7872         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
7873                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
7874                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
7875                 pf->num_req_vfs = min_t(int,
7876                                         pf->hw.func_caps.num_vfs,
7877                                         I40E_MAX_VF_COUNT);
7878         }
7879 #endif /* CONFIG_PCI_IOV */
7880         if (pf->hw.mac.type == I40E_MAC_X722) {
7881                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
7882                              I40E_FLAG_128_QP_RSS_CAPABLE |
7883                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
7884                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
7885                              I40E_FLAG_WB_ON_ITR_CAPABLE |
7886                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE;
7887         }
7888         pf->eeprom_version = 0xDEAD;
7889         pf->lan_veb = I40E_NO_VEB;
7890         pf->lan_vsi = I40E_NO_VSI;
7891
7892         /* set up queue assignment tracking */
7893         size = sizeof(struct i40e_lump_tracking)
7894                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
7895         pf->qp_pile = kzalloc(size, GFP_KERNEL);
7896         if (!pf->qp_pile) {
7897                 err = -ENOMEM;
7898                 goto sw_init_done;
7899         }
7900         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
7901         pf->qp_pile->search_hint = 0;
7902
7903         pf->tx_timeout_recovery_level = 1;
7904
7905         mutex_init(&pf->switch_mutex);
7906
7907         /* If NPAR is enabled nudge the Tx scheduler */
7908         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
7909                 i40e_set_npar_bw_setting(pf);
7910
7911 sw_init_done:
7912         return err;
7913 }
7914
7915 /**
7916  * i40e_set_ntuple - set the ntuple feature flag and take action
7917  * @pf: board private structure to initialize
7918  * @features: the feature set that the stack is suggesting
7919  *
7920  * returns a bool to indicate if reset needs to happen
7921  **/
7922 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
7923 {
7924         bool need_reset = false;
7925
7926         /* Check if Flow Director n-tuple support was enabled or disabled.  If
7927          * the state changed, we need to reset.
7928          */
7929         if (features & NETIF_F_NTUPLE) {
7930                 /* Enable filters and mark for reset */
7931                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
7932                         need_reset = true;
7933                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7934         } else {
7935                 /* turn off filters, mark for reset and clear SW filter list */
7936                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7937                         need_reset = true;
7938                         i40e_fdir_filter_exit(pf);
7939                 }
7940                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7941                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
7942                 /* reset fd counters */
7943                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
7944                 pf->fdir_pf_active_filters = 0;
7945                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7946                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
7947                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
7948                 /* if ATR was auto disabled it can be re-enabled. */
7949                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
7950                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
7951                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
7952         }
7953         return need_reset;
7954 }
7955
7956 /**
7957  * i40e_set_features - set the netdev feature flags
7958  * @netdev: ptr to the netdev being adjusted
7959  * @features: the feature set that the stack is suggesting
7960  **/
7961 static int i40e_set_features(struct net_device *netdev,
7962                              netdev_features_t features)
7963 {
7964         struct i40e_netdev_priv *np = netdev_priv(netdev);
7965         struct i40e_vsi *vsi = np->vsi;
7966         struct i40e_pf *pf = vsi->back;
7967         bool need_reset;
7968
7969         if (features & NETIF_F_HW_VLAN_CTAG_RX)
7970                 i40e_vlan_stripping_enable(vsi);
7971         else
7972                 i40e_vlan_stripping_disable(vsi);
7973
7974         need_reset = i40e_set_ntuple(pf, features);
7975
7976         if (need_reset)
7977                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
7978
7979         return 0;
7980 }
7981
7982 #ifdef CONFIG_I40E_VXLAN
7983 /**
7984  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
7985  * @pf: board private structure
7986  * @port: The UDP port to look up
7987  *
7988  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
7989  **/
7990 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
7991 {
7992         u8 i;
7993
7994         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7995                 if (pf->vxlan_ports[i] == port)
7996                         return i;
7997         }
7998
7999         return i;
8000 }
8001
8002 /**
8003  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
8004  * @netdev: This physical port's netdev
8005  * @sa_family: Socket Family that VXLAN is notifying us about
8006  * @port: New UDP port number that VXLAN started listening to
8007  **/
8008 static void i40e_add_vxlan_port(struct net_device *netdev,
8009                                 sa_family_t sa_family, __be16 port)
8010 {
8011         struct i40e_netdev_priv *np = netdev_priv(netdev);
8012         struct i40e_vsi *vsi = np->vsi;
8013         struct i40e_pf *pf = vsi->back;
8014         u8 next_idx;
8015         u8 idx;
8016
8017         if (sa_family == AF_INET6)
8018                 return;
8019
8020         idx = i40e_get_vxlan_port_idx(pf, port);
8021
8022         /* Check if port already exists */
8023         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8024                 netdev_info(netdev, "vxlan port %d already offloaded\n",
8025                             ntohs(port));
8026                 return;
8027         }
8028
8029         /* Now check if there is space to add the new port */
8030         next_idx = i40e_get_vxlan_port_idx(pf, 0);
8031
8032         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8033                 netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
8034                             ntohs(port));
8035                 return;
8036         }
8037
8038         /* New port: add it and mark its index in the bitmap */
8039         pf->vxlan_ports[next_idx] = port;
8040         pf->pending_vxlan_bitmap |= BIT_ULL(next_idx);
8041         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8042
8043         dev_info(&pf->pdev->dev, "adding vxlan port %d\n", ntohs(port));
8044 }
8045
8046 /**
8047  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
8048  * @netdev: This physical port's netdev
8049  * @sa_family: Socket Family that VXLAN is notifying us about
8050  * @port: UDP port number that VXLAN stopped listening to
8051  **/
8052 static void i40e_del_vxlan_port(struct net_device *netdev,
8053                                 sa_family_t sa_family, __be16 port)
8054 {
8055         struct i40e_netdev_priv *np = netdev_priv(netdev);
8056         struct i40e_vsi *vsi = np->vsi;
8057         struct i40e_pf *pf = vsi->back;
8058         u8 idx;
8059
8060         if (sa_family == AF_INET6)
8061                 return;
8062
8063         idx = i40e_get_vxlan_port_idx(pf, port);
8064
8065         /* Check if port already exists */
8066         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8067                 /* if port exists, set it to 0 (mark for deletion)
8068                  * and make it pending
8069                  */
8070                 pf->vxlan_ports[idx] = 0;
8071                 pf->pending_vxlan_bitmap |= BIT_ULL(idx);
8072                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8073
8074                 dev_info(&pf->pdev->dev, "deleting vxlan port %d\n",
8075                          ntohs(port));
8076         } else {
8077                 netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
8078                             ntohs(port));
8079         }
8080 }
8081
8082 #endif
8083 static int i40e_get_phys_port_id(struct net_device *netdev,
8084                                  struct netdev_phys_item_id *ppid)
8085 {
8086         struct i40e_netdev_priv *np = netdev_priv(netdev);
8087         struct i40e_pf *pf = np->vsi->back;
8088         struct i40e_hw *hw = &pf->hw;
8089
8090         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8091                 return -EOPNOTSUPP;
8092
8093         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8094         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8095
8096         return 0;
8097 }
8098
8099 /**
8100  * i40e_ndo_fdb_add - add an entry to the hardware database
8101  * @ndm: the input from the stack
8102  * @tb: pointer to array of nladdr (unused)
8103  * @dev: the net device pointer
8104  * @addr: the MAC address entry being added
8105  * @flags: instructions from stack about fdb operation
8106  */
8107 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8108                             struct net_device *dev,
8109                             const unsigned char *addr, u16 vid,
8110                             u16 flags)
8111 {
8112         struct i40e_netdev_priv *np = netdev_priv(dev);
8113         struct i40e_pf *pf = np->vsi->back;
8114         int err = 0;
8115
8116         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8117                 return -EOPNOTSUPP;
8118
8119         if (vid) {
8120                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8121                 return -EINVAL;
8122         }
8123
8124         /* Hardware does not support aging addresses so if a
8125          * ndm_state is given only allow permanent addresses
8126          */
8127         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8128                 netdev_info(dev, "FDB only supports static addresses\n");
8129                 return -EINVAL;
8130         }
8131
8132         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8133                 err = dev_uc_add_excl(dev, addr);
8134         else if (is_multicast_ether_addr(addr))
8135                 err = dev_mc_add_excl(dev, addr);
8136         else
8137                 err = -EINVAL;
8138
8139         /* Only return duplicate errors if NLM_F_EXCL is set */
8140         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8141                 err = 0;
8142
8143         return err;
8144 }
8145
8146 /**
8147  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8148  * @dev: the netdev being configured
8149  * @nlh: RTNL message
8150  *
8151  * Inserts a new hardware bridge if not already created and
8152  * enables the bridging mode requested (VEB or VEPA). If the
8153  * hardware bridge has already been inserted and the request
8154  * is to change the mode then that requires a PF reset to
8155  * allow rebuild of the components with required hardware
8156  * bridge mode enabled.
8157  **/
8158 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8159                                    struct nlmsghdr *nlh,
8160                                    u16 flags)
8161 {
8162         struct i40e_netdev_priv *np = netdev_priv(dev);
8163         struct i40e_vsi *vsi = np->vsi;
8164         struct i40e_pf *pf = vsi->back;
8165         struct i40e_veb *veb = NULL;
8166         struct nlattr *attr, *br_spec;
8167         int i, rem;
8168
8169         /* Only for PF VSI for now */
8170         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8171                 return -EOPNOTSUPP;
8172
8173         /* Find the HW bridge for PF VSI */
8174         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8175                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8176                         veb = pf->veb[i];
8177         }
8178
8179         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8180
8181         nla_for_each_nested(attr, br_spec, rem) {
8182                 __u16 mode;
8183
8184                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8185                         continue;
8186
8187                 mode = nla_get_u16(attr);
8188                 if ((mode != BRIDGE_MODE_VEPA) &&
8189                     (mode != BRIDGE_MODE_VEB))
8190                         return -EINVAL;
8191
8192                 /* Insert a new HW bridge */
8193                 if (!veb) {
8194                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8195                                              vsi->tc_config.enabled_tc);
8196                         if (veb) {
8197                                 veb->bridge_mode = mode;
8198                                 i40e_config_bridge_mode(veb);
8199                         } else {
8200                                 /* No Bridge HW offload available */
8201                                 return -ENOENT;
8202                         }
8203                         break;
8204                 } else if (mode != veb->bridge_mode) {
8205                         /* Existing HW bridge but different mode needs reset */
8206                         veb->bridge_mode = mode;
8207                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8208                         if (mode == BRIDGE_MODE_VEB)
8209                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8210                         else
8211                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8212                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8213                         break;
8214                 }
8215         }
8216
8217         return 0;
8218 }
8219
8220 /**
8221  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8222  * @skb: skb buff
8223  * @pid: process id
8224  * @seq: RTNL message seq #
8225  * @dev: the netdev being configured
8226  * @filter_mask: unused
8227  *
8228  * Return the mode in which the hardware bridge is operating in
8229  * i.e VEB or VEPA.
8230  **/
8231 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8232                                    struct net_device *dev,
8233                                    u32 filter_mask, int nlflags)
8234 {
8235         struct i40e_netdev_priv *np = netdev_priv(dev);
8236         struct i40e_vsi *vsi = np->vsi;
8237         struct i40e_pf *pf = vsi->back;
8238         struct i40e_veb *veb = NULL;
8239         int i;
8240
8241         /* Only for PF VSI for now */
8242         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8243                 return -EOPNOTSUPP;
8244
8245         /* Find the HW bridge for the PF VSI */
8246         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8247                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8248                         veb = pf->veb[i];
8249         }
8250
8251         if (!veb)
8252                 return 0;
8253
8254         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8255                                        nlflags, 0, 0, filter_mask, NULL);
8256 }
8257
8258 #define I40E_MAX_TUNNEL_HDR_LEN 80
8259 /**
8260  * i40e_features_check - Validate encapsulated packet conforms to limits
8261  * @skb: skb buff
8262  * @netdev: This physical port's netdev
8263  * @features: Offload features that the stack believes apply
8264  **/
8265 static netdev_features_t i40e_features_check(struct sk_buff *skb,
8266                                              struct net_device *dev,
8267                                              netdev_features_t features)
8268 {
8269         if (skb->encapsulation &&
8270             (skb_inner_mac_header(skb) - skb_transport_header(skb) >
8271              I40E_MAX_TUNNEL_HDR_LEN))
8272                 return features & ~(NETIF_F_ALL_CSUM | NETIF_F_GSO_MASK);
8273
8274         return features;
8275 }
8276
8277 static const struct net_device_ops i40e_netdev_ops = {
8278         .ndo_open               = i40e_open,
8279         .ndo_stop               = i40e_close,
8280         .ndo_start_xmit         = i40e_lan_xmit_frame,
8281         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
8282         .ndo_set_rx_mode        = i40e_set_rx_mode,
8283         .ndo_validate_addr      = eth_validate_addr,
8284         .ndo_set_mac_address    = i40e_set_mac,
8285         .ndo_change_mtu         = i40e_change_mtu,
8286         .ndo_do_ioctl           = i40e_ioctl,
8287         .ndo_tx_timeout         = i40e_tx_timeout,
8288         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
8289         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
8290 #ifdef CONFIG_NET_POLL_CONTROLLER
8291         .ndo_poll_controller    = i40e_netpoll,
8292 #endif
8293         .ndo_setup_tc           = i40e_setup_tc,
8294 #ifdef I40E_FCOE
8295         .ndo_fcoe_enable        = i40e_fcoe_enable,
8296         .ndo_fcoe_disable       = i40e_fcoe_disable,
8297 #endif
8298         .ndo_set_features       = i40e_set_features,
8299         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
8300         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
8301         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
8302         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
8303         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
8304         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
8305 #ifdef CONFIG_I40E_VXLAN
8306         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
8307         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
8308 #endif
8309         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
8310         .ndo_fdb_add            = i40e_ndo_fdb_add,
8311         .ndo_features_check     = i40e_features_check,
8312         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
8313         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
8314 };
8315
8316 /**
8317  * i40e_config_netdev - Setup the netdev flags
8318  * @vsi: the VSI being configured
8319  *
8320  * Returns 0 on success, negative value on failure
8321  **/
8322 static int i40e_config_netdev(struct i40e_vsi *vsi)
8323 {
8324         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
8325         struct i40e_pf *pf = vsi->back;
8326         struct i40e_hw *hw = &pf->hw;
8327         struct i40e_netdev_priv *np;
8328         struct net_device *netdev;
8329         u8 mac_addr[ETH_ALEN];
8330         int etherdev_size;
8331
8332         etherdev_size = sizeof(struct i40e_netdev_priv);
8333         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
8334         if (!netdev)
8335                 return -ENOMEM;
8336
8337         vsi->netdev = netdev;
8338         np = netdev_priv(netdev);
8339         np->vsi = vsi;
8340
8341         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
8342                                   NETIF_F_GSO_UDP_TUNNEL |
8343                                   NETIF_F_TSO;
8344
8345         netdev->features = NETIF_F_SG                  |
8346                            NETIF_F_IP_CSUM             |
8347                            NETIF_F_SCTP_CSUM           |
8348                            NETIF_F_HIGHDMA             |
8349                            NETIF_F_GSO_UDP_TUNNEL      |
8350                            NETIF_F_HW_VLAN_CTAG_TX     |
8351                            NETIF_F_HW_VLAN_CTAG_RX     |
8352                            NETIF_F_HW_VLAN_CTAG_FILTER |
8353                            NETIF_F_IPV6_CSUM           |
8354                            NETIF_F_TSO                 |
8355                            NETIF_F_TSO_ECN             |
8356                            NETIF_F_TSO6                |
8357                            NETIF_F_RXCSUM              |
8358                            NETIF_F_RXHASH              |
8359                            0;
8360
8361         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
8362                 netdev->features |= NETIF_F_NTUPLE;
8363
8364         /* copy netdev features into list of user selectable features */
8365         netdev->hw_features |= netdev->features;
8366
8367         if (vsi->type == I40E_VSI_MAIN) {
8368                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
8369                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
8370                 /* The following steps are necessary to prevent reception
8371                  * of tagged packets - some older NVM configurations load a
8372                  * default a MAC-VLAN filter that accepts any tagged packet
8373                  * which must be replaced by a normal filter.
8374                  */
8375                 if (!i40e_rm_default_mac_filter(vsi, mac_addr))
8376                         i40e_add_filter(vsi, mac_addr,
8377                                         I40E_VLAN_ANY, false, true);
8378         } else {
8379                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
8380                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
8381                          pf->vsi[pf->lan_vsi]->netdev->name);
8382                 random_ether_addr(mac_addr);
8383                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
8384         }
8385         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
8386
8387         ether_addr_copy(netdev->dev_addr, mac_addr);
8388         ether_addr_copy(netdev->perm_addr, mac_addr);
8389         /* vlan gets same features (except vlan offload)
8390          * after any tweaks for specific VSI types
8391          */
8392         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
8393                                                      NETIF_F_HW_VLAN_CTAG_RX |
8394                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
8395         netdev->priv_flags |= IFF_UNICAST_FLT;
8396         netdev->priv_flags |= IFF_SUPP_NOFCS;
8397         /* Setup netdev TC information */
8398         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
8399
8400         netdev->netdev_ops = &i40e_netdev_ops;
8401         netdev->watchdog_timeo = 5 * HZ;
8402         i40e_set_ethtool_ops(netdev);
8403 #ifdef I40E_FCOE
8404         i40e_fcoe_config_netdev(netdev, vsi);
8405 #endif
8406
8407         return 0;
8408 }
8409
8410 /**
8411  * i40e_vsi_delete - Delete a VSI from the switch
8412  * @vsi: the VSI being removed
8413  *
8414  * Returns 0 on success, negative value on failure
8415  **/
8416 static void i40e_vsi_delete(struct i40e_vsi *vsi)
8417 {
8418         /* remove default VSI is not allowed */
8419         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
8420                 return;
8421
8422         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
8423 }
8424
8425 /**
8426  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
8427  * @vsi: the VSI being queried
8428  *
8429  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
8430  **/
8431 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
8432 {
8433         struct i40e_veb *veb;
8434         struct i40e_pf *pf = vsi->back;
8435
8436         /* Uplink is not a bridge so default to VEB */
8437         if (vsi->veb_idx == I40E_NO_VEB)
8438                 return 1;
8439
8440         veb = pf->veb[vsi->veb_idx];
8441         /* Uplink is a bridge in VEPA mode */
8442         if (veb && (veb->bridge_mode & BRIDGE_MODE_VEPA))
8443                 return 0;
8444
8445         /* Uplink is a bridge in VEB mode */
8446         return 1;
8447 }
8448
8449 /**
8450  * i40e_add_vsi - Add a VSI to the switch
8451  * @vsi: the VSI being configured
8452  *
8453  * This initializes a VSI context depending on the VSI type to be added and
8454  * passes it down to the add_vsi aq command.
8455  **/
8456 static int i40e_add_vsi(struct i40e_vsi *vsi)
8457 {
8458         int ret = -ENODEV;
8459         struct i40e_mac_filter *f, *ftmp;
8460         struct i40e_pf *pf = vsi->back;
8461         struct i40e_hw *hw = &pf->hw;
8462         struct i40e_vsi_context ctxt;
8463         u8 enabled_tc = 0x1; /* TC0 enabled */
8464         int f_count = 0;
8465
8466         memset(&ctxt, 0, sizeof(ctxt));
8467         switch (vsi->type) {
8468         case I40E_VSI_MAIN:
8469                 /* The PF's main VSI is already setup as part of the
8470                  * device initialization, so we'll not bother with
8471                  * the add_vsi call, but we will retrieve the current
8472                  * VSI context.
8473                  */
8474                 ctxt.seid = pf->main_vsi_seid;
8475                 ctxt.pf_num = pf->hw.pf_id;
8476                 ctxt.vf_num = 0;
8477                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
8478                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8479                 if (ret) {
8480                         dev_info(&pf->pdev->dev,
8481                                  "couldn't get PF vsi config, err %s aq_err %s\n",
8482                                  i40e_stat_str(&pf->hw, ret),
8483                                  i40e_aq_str(&pf->hw,
8484                                              pf->hw.aq.asq_last_status));
8485                         return -ENOENT;
8486                 }
8487                 vsi->info = ctxt.info;
8488                 vsi->info.valid_sections = 0;
8489
8490                 vsi->seid = ctxt.seid;
8491                 vsi->id = ctxt.vsi_number;
8492
8493                 enabled_tc = i40e_pf_get_tc_map(pf);
8494
8495                 /* MFP mode setup queue map and update VSI */
8496                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
8497                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
8498                         memset(&ctxt, 0, sizeof(ctxt));
8499                         ctxt.seid = pf->main_vsi_seid;
8500                         ctxt.pf_num = pf->hw.pf_id;
8501                         ctxt.vf_num = 0;
8502                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
8503                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
8504                         if (ret) {
8505                                 dev_info(&pf->pdev->dev,
8506                                          "update vsi failed, err %s aq_err %s\n",
8507                                          i40e_stat_str(&pf->hw, ret),
8508                                          i40e_aq_str(&pf->hw,
8509                                                     pf->hw.aq.asq_last_status));
8510                                 ret = -ENOENT;
8511                                 goto err;
8512                         }
8513                         /* update the local VSI info queue map */
8514                         i40e_vsi_update_queue_map(vsi, &ctxt);
8515                         vsi->info.valid_sections = 0;
8516                 } else {
8517                         /* Default/Main VSI is only enabled for TC0
8518                          * reconfigure it to enable all TCs that are
8519                          * available on the port in SFP mode.
8520                          * For MFP case the iSCSI PF would use this
8521                          * flow to enable LAN+iSCSI TC.
8522                          */
8523                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
8524                         if (ret) {
8525                                 dev_info(&pf->pdev->dev,
8526                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
8527                                          enabled_tc,
8528                                          i40e_stat_str(&pf->hw, ret),
8529                                          i40e_aq_str(&pf->hw,
8530                                                     pf->hw.aq.asq_last_status));
8531                                 ret = -ENOENT;
8532                         }
8533                 }
8534                 break;
8535
8536         case I40E_VSI_FDIR:
8537                 ctxt.pf_num = hw->pf_id;
8538                 ctxt.vf_num = 0;
8539                 ctxt.uplink_seid = vsi->uplink_seid;
8540                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8541                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8542                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
8543                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
8544                         ctxt.info.valid_sections |=
8545                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8546                         ctxt.info.switch_id =
8547                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8548                 }
8549                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8550                 break;
8551
8552         case I40E_VSI_VMDQ2:
8553                 ctxt.pf_num = hw->pf_id;
8554                 ctxt.vf_num = 0;
8555                 ctxt.uplink_seid = vsi->uplink_seid;
8556                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8557                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
8558
8559                 /* This VSI is connected to VEB so the switch_id
8560                  * should be set to zero by default.
8561                  */
8562                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8563                         ctxt.info.valid_sections |=
8564                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8565                         ctxt.info.switch_id =
8566                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8567                 }
8568
8569                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8570                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8571                 break;
8572
8573         case I40E_VSI_SRIOV:
8574                 ctxt.pf_num = hw->pf_id;
8575                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
8576                 ctxt.uplink_seid = vsi->uplink_seid;
8577                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8578                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
8579
8580                 /* This VSI is connected to VEB so the switch_id
8581                  * should be set to zero by default.
8582                  */
8583                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8584                         ctxt.info.valid_sections |=
8585                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8586                         ctxt.info.switch_id =
8587                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8588                 }
8589
8590                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
8591                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
8592                 if (pf->vf[vsi->vf_id].spoofchk) {
8593                         ctxt.info.valid_sections |=
8594                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
8595                         ctxt.info.sec_flags |=
8596                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
8597                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
8598                 }
8599                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8600                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8601                 break;
8602
8603 #ifdef I40E_FCOE
8604         case I40E_VSI_FCOE:
8605                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
8606                 if (ret) {
8607                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
8608                         return ret;
8609                 }
8610                 break;
8611
8612 #endif /* I40E_FCOE */
8613         default:
8614                 return -ENODEV;
8615         }
8616
8617         if (vsi->type != I40E_VSI_MAIN) {
8618                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
8619                 if (ret) {
8620                         dev_info(&vsi->back->pdev->dev,
8621                                  "add vsi failed, err %s aq_err %s\n",
8622                                  i40e_stat_str(&pf->hw, ret),
8623                                  i40e_aq_str(&pf->hw,
8624                                              pf->hw.aq.asq_last_status));
8625                         ret = -ENOENT;
8626                         goto err;
8627                 }
8628                 vsi->info = ctxt.info;
8629                 vsi->info.valid_sections = 0;
8630                 vsi->seid = ctxt.seid;
8631                 vsi->id = ctxt.vsi_number;
8632         }
8633
8634         /* If macvlan filters already exist, force them to get loaded */
8635         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
8636                 f->changed = true;
8637                 f_count++;
8638
8639                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
8640                         struct i40e_aqc_remove_macvlan_element_data element;
8641
8642                         memset(&element, 0, sizeof(element));
8643                         ether_addr_copy(element.mac_addr, f->macaddr);
8644                         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
8645                         ret = i40e_aq_remove_macvlan(hw, vsi->seid,
8646                                                      &element, 1, NULL);
8647                         if (ret) {
8648                                 /* some older FW has a different default */
8649                                 element.flags |=
8650                                                I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
8651                                 i40e_aq_remove_macvlan(hw, vsi->seid,
8652                                                        &element, 1, NULL);
8653                         }
8654
8655                         i40e_aq_mac_address_write(hw,
8656                                                   I40E_AQC_WRITE_TYPE_LAA_WOL,
8657                                                   f->macaddr, NULL);
8658                 }
8659         }
8660         if (f_count) {
8661                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
8662                 pf->flags |= I40E_FLAG_FILTER_SYNC;
8663         }
8664
8665         /* Update VSI BW information */
8666         ret = i40e_vsi_get_bw_info(vsi);
8667         if (ret) {
8668                 dev_info(&pf->pdev->dev,
8669                          "couldn't get vsi bw info, err %s aq_err %s\n",
8670                          i40e_stat_str(&pf->hw, ret),
8671                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
8672                 /* VSI is already added so not tearing that up */
8673                 ret = 0;
8674         }
8675
8676 err:
8677         return ret;
8678 }
8679
8680 /**
8681  * i40e_vsi_release - Delete a VSI and free its resources
8682  * @vsi: the VSI being removed
8683  *
8684  * Returns 0 on success or < 0 on error
8685  **/
8686 int i40e_vsi_release(struct i40e_vsi *vsi)
8687 {
8688         struct i40e_mac_filter *f, *ftmp;
8689         struct i40e_veb *veb = NULL;
8690         struct i40e_pf *pf;
8691         u16 uplink_seid;
8692         int i, n;
8693
8694         pf = vsi->back;
8695
8696         /* release of a VEB-owner or last VSI is not allowed */
8697         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
8698                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
8699                          vsi->seid, vsi->uplink_seid);
8700                 return -ENODEV;
8701         }
8702         if (vsi == pf->vsi[pf->lan_vsi] &&
8703             !test_bit(__I40E_DOWN, &pf->state)) {
8704                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
8705                 return -ENODEV;
8706         }
8707
8708         uplink_seid = vsi->uplink_seid;
8709         if (vsi->type != I40E_VSI_SRIOV) {
8710                 if (vsi->netdev_registered) {
8711                         vsi->netdev_registered = false;
8712                         if (vsi->netdev) {
8713                                 /* results in a call to i40e_close() */
8714                                 unregister_netdev(vsi->netdev);
8715                         }
8716                 } else {
8717                         i40e_vsi_close(vsi);
8718                 }
8719                 i40e_vsi_disable_irq(vsi);
8720         }
8721
8722         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
8723                 i40e_del_filter(vsi, f->macaddr, f->vlan,
8724                                 f->is_vf, f->is_netdev);
8725         i40e_sync_vsi_filters(vsi);
8726
8727         i40e_vsi_delete(vsi);
8728         i40e_vsi_free_q_vectors(vsi);
8729         if (vsi->netdev) {
8730                 free_netdev(vsi->netdev);
8731                 vsi->netdev = NULL;
8732         }
8733         i40e_vsi_clear_rings(vsi);
8734         i40e_vsi_clear(vsi);
8735
8736         /* If this was the last thing on the VEB, except for the
8737          * controlling VSI, remove the VEB, which puts the controlling
8738          * VSI onto the next level down in the switch.
8739          *
8740          * Well, okay, there's one more exception here: don't remove
8741          * the orphan VEBs yet.  We'll wait for an explicit remove request
8742          * from up the network stack.
8743          */
8744         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
8745                 if (pf->vsi[i] &&
8746                     pf->vsi[i]->uplink_seid == uplink_seid &&
8747                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8748                         n++;      /* count the VSIs */
8749                 }
8750         }
8751         for (i = 0; i < I40E_MAX_VEB; i++) {
8752                 if (!pf->veb[i])
8753                         continue;
8754                 if (pf->veb[i]->uplink_seid == uplink_seid)
8755                         n++;     /* count the VEBs */
8756                 if (pf->veb[i]->seid == uplink_seid)
8757                         veb = pf->veb[i];
8758         }
8759         if (n == 0 && veb && veb->uplink_seid != 0)
8760                 i40e_veb_release(veb);
8761
8762         return 0;
8763 }
8764
8765 /**
8766  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
8767  * @vsi: ptr to the VSI
8768  *
8769  * This should only be called after i40e_vsi_mem_alloc() which allocates the
8770  * corresponding SW VSI structure and initializes num_queue_pairs for the
8771  * newly allocated VSI.
8772  *
8773  * Returns 0 on success or negative on failure
8774  **/
8775 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
8776 {
8777         int ret = -ENOENT;
8778         struct i40e_pf *pf = vsi->back;
8779
8780         if (vsi->q_vectors[0]) {
8781                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
8782                          vsi->seid);
8783                 return -EEXIST;
8784         }
8785
8786         if (vsi->base_vector) {
8787                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
8788                          vsi->seid, vsi->base_vector);
8789                 return -EEXIST;
8790         }
8791
8792         ret = i40e_vsi_alloc_q_vectors(vsi);
8793         if (ret) {
8794                 dev_info(&pf->pdev->dev,
8795                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
8796                          vsi->num_q_vectors, vsi->seid, ret);
8797                 vsi->num_q_vectors = 0;
8798                 goto vector_setup_out;
8799         }
8800
8801         if (vsi->num_q_vectors)
8802                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
8803                                                  vsi->num_q_vectors, vsi->idx);
8804         if (vsi->base_vector < 0) {
8805                 dev_info(&pf->pdev->dev,
8806                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
8807                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
8808                 i40e_vsi_free_q_vectors(vsi);
8809                 ret = -ENOENT;
8810                 goto vector_setup_out;
8811         }
8812
8813 vector_setup_out:
8814         return ret;
8815 }
8816
8817 /**
8818  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
8819  * @vsi: pointer to the vsi.
8820  *
8821  * This re-allocates a vsi's queue resources.
8822  *
8823  * Returns pointer to the successfully allocated and configured VSI sw struct
8824  * on success, otherwise returns NULL on failure.
8825  **/
8826 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
8827 {
8828         struct i40e_pf *pf = vsi->back;
8829         u8 enabled_tc;
8830         int ret;
8831
8832         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
8833         i40e_vsi_clear_rings(vsi);
8834
8835         i40e_vsi_free_arrays(vsi, false);
8836         i40e_set_num_rings_in_vsi(vsi);
8837         ret = i40e_vsi_alloc_arrays(vsi, false);
8838         if (ret)
8839                 goto err_vsi;
8840
8841         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
8842         if (ret < 0) {
8843                 dev_info(&pf->pdev->dev,
8844                          "failed to get tracking for %d queues for VSI %d err %d\n",
8845                          vsi->alloc_queue_pairs, vsi->seid, ret);
8846                 goto err_vsi;
8847         }
8848         vsi->base_queue = ret;
8849
8850         /* Update the FW view of the VSI. Force a reset of TC and queue
8851          * layout configurations.
8852          */
8853         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8854         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8855         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8856         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8857
8858         /* assign it some queues */
8859         ret = i40e_alloc_rings(vsi);
8860         if (ret)
8861                 goto err_rings;
8862
8863         /* map all of the rings to the q_vectors */
8864         i40e_vsi_map_rings_to_vectors(vsi);
8865         return vsi;
8866
8867 err_rings:
8868         i40e_vsi_free_q_vectors(vsi);
8869         if (vsi->netdev_registered) {
8870                 vsi->netdev_registered = false;
8871                 unregister_netdev(vsi->netdev);
8872                 free_netdev(vsi->netdev);
8873                 vsi->netdev = NULL;
8874         }
8875         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8876 err_vsi:
8877         i40e_vsi_clear(vsi);
8878         return NULL;
8879 }
8880
8881 /**
8882  * i40e_vsi_setup - Set up a VSI by a given type
8883  * @pf: board private structure
8884  * @type: VSI type
8885  * @uplink_seid: the switch element to link to
8886  * @param1: usage depends upon VSI type. For VF types, indicates VF id
8887  *
8888  * This allocates the sw VSI structure and its queue resources, then add a VSI
8889  * to the identified VEB.
8890  *
8891  * Returns pointer to the successfully allocated and configure VSI sw struct on
8892  * success, otherwise returns NULL on failure.
8893  **/
8894 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
8895                                 u16 uplink_seid, u32 param1)
8896 {
8897         struct i40e_vsi *vsi = NULL;
8898         struct i40e_veb *veb = NULL;
8899         int ret, i;
8900         int v_idx;
8901
8902         /* The requested uplink_seid must be either
8903          *     - the PF's port seid
8904          *              no VEB is needed because this is the PF
8905          *              or this is a Flow Director special case VSI
8906          *     - seid of an existing VEB
8907          *     - seid of a VSI that owns an existing VEB
8908          *     - seid of a VSI that doesn't own a VEB
8909          *              a new VEB is created and the VSI becomes the owner
8910          *     - seid of the PF VSI, which is what creates the first VEB
8911          *              this is a special case of the previous
8912          *
8913          * Find which uplink_seid we were given and create a new VEB if needed
8914          */
8915         for (i = 0; i < I40E_MAX_VEB; i++) {
8916                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
8917                         veb = pf->veb[i];
8918                         break;
8919                 }
8920         }
8921
8922         if (!veb && uplink_seid != pf->mac_seid) {
8923
8924                 for (i = 0; i < pf->num_alloc_vsi; i++) {
8925                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
8926                                 vsi = pf->vsi[i];
8927                                 break;
8928                         }
8929                 }
8930                 if (!vsi) {
8931                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
8932                                  uplink_seid);
8933                         return NULL;
8934                 }
8935
8936                 if (vsi->uplink_seid == pf->mac_seid)
8937                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
8938                                              vsi->tc_config.enabled_tc);
8939                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
8940                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8941                                              vsi->tc_config.enabled_tc);
8942                 if (veb) {
8943                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
8944                                 dev_info(&vsi->back->pdev->dev,
8945                                          "%s: New VSI creation error, uplink seid of LAN VSI expected.\n",
8946                                          __func__);
8947                                 return NULL;
8948                         }
8949                         /* We come up by default in VEPA mode if SRIOV is not
8950                          * already enabled, in which case we can't force VEPA
8951                          * mode.
8952                          */
8953                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
8954                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
8955                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8956                         }
8957                         i40e_config_bridge_mode(veb);
8958                 }
8959                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8960                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8961                                 veb = pf->veb[i];
8962                 }
8963                 if (!veb) {
8964                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
8965                         return NULL;
8966                 }
8967
8968                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8969                 uplink_seid = veb->seid;
8970         }
8971
8972         /* get vsi sw struct */
8973         v_idx = i40e_vsi_mem_alloc(pf, type);
8974         if (v_idx < 0)
8975                 goto err_alloc;
8976         vsi = pf->vsi[v_idx];
8977         if (!vsi)
8978                 goto err_alloc;
8979         vsi->type = type;
8980         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
8981
8982         if (type == I40E_VSI_MAIN)
8983                 pf->lan_vsi = v_idx;
8984         else if (type == I40E_VSI_SRIOV)
8985                 vsi->vf_id = param1;
8986         /* assign it some queues */
8987         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
8988                                 vsi->idx);
8989         if (ret < 0) {
8990                 dev_info(&pf->pdev->dev,
8991                          "failed to get tracking for %d queues for VSI %d err=%d\n",
8992                          vsi->alloc_queue_pairs, vsi->seid, ret);
8993                 goto err_vsi;
8994         }
8995         vsi->base_queue = ret;
8996
8997         /* get a VSI from the hardware */
8998         vsi->uplink_seid = uplink_seid;
8999         ret = i40e_add_vsi(vsi);
9000         if (ret)
9001                 goto err_vsi;
9002
9003         switch (vsi->type) {
9004         /* setup the netdev if needed */
9005         case I40E_VSI_MAIN:
9006         case I40E_VSI_VMDQ2:
9007         case I40E_VSI_FCOE:
9008                 ret = i40e_config_netdev(vsi);
9009                 if (ret)
9010                         goto err_netdev;
9011                 ret = register_netdev(vsi->netdev);
9012                 if (ret)
9013                         goto err_netdev;
9014                 vsi->netdev_registered = true;
9015                 netif_carrier_off(vsi->netdev);
9016 #ifdef CONFIG_I40E_DCB
9017                 /* Setup DCB netlink interface */
9018                 i40e_dcbnl_setup(vsi);
9019 #endif /* CONFIG_I40E_DCB */
9020                 /* fall through */
9021
9022         case I40E_VSI_FDIR:
9023                 /* set up vectors and rings if needed */
9024                 ret = i40e_vsi_setup_vectors(vsi);
9025                 if (ret)
9026                         goto err_msix;
9027
9028                 ret = i40e_alloc_rings(vsi);
9029                 if (ret)
9030                         goto err_rings;
9031
9032                 /* map all of the rings to the q_vectors */
9033                 i40e_vsi_map_rings_to_vectors(vsi);
9034
9035                 i40e_vsi_reset_stats(vsi);
9036                 break;
9037
9038         default:
9039                 /* no netdev or rings for the other VSI types */
9040                 break;
9041         }
9042
9043         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9044             (vsi->type == I40E_VSI_VMDQ2)) {
9045                 ret = i40e_vsi_config_rss(vsi);
9046         }
9047         return vsi;
9048
9049 err_rings:
9050         i40e_vsi_free_q_vectors(vsi);
9051 err_msix:
9052         if (vsi->netdev_registered) {
9053                 vsi->netdev_registered = false;
9054                 unregister_netdev(vsi->netdev);
9055                 free_netdev(vsi->netdev);
9056                 vsi->netdev = NULL;
9057         }
9058 err_netdev:
9059         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9060 err_vsi:
9061         i40e_vsi_clear(vsi);
9062 err_alloc:
9063         return NULL;
9064 }
9065
9066 /**
9067  * i40e_veb_get_bw_info - Query VEB BW information
9068  * @veb: the veb to query
9069  *
9070  * Query the Tx scheduler BW configuration data for given VEB
9071  **/
9072 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9073 {
9074         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9075         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9076         struct i40e_pf *pf = veb->pf;
9077         struct i40e_hw *hw = &pf->hw;
9078         u32 tc_bw_max;
9079         int ret = 0;
9080         int i;
9081
9082         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9083                                                   &bw_data, NULL);
9084         if (ret) {
9085                 dev_info(&pf->pdev->dev,
9086                          "query veb bw config failed, err %s aq_err %s\n",
9087                          i40e_stat_str(&pf->hw, ret),
9088                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9089                 goto out;
9090         }
9091
9092         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9093                                                    &ets_data, NULL);
9094         if (ret) {
9095                 dev_info(&pf->pdev->dev,
9096                          "query veb bw ets config failed, err %s aq_err %s\n",
9097                          i40e_stat_str(&pf->hw, ret),
9098                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9099                 goto out;
9100         }
9101
9102         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9103         veb->bw_max_quanta = ets_data.tc_bw_max;
9104         veb->is_abs_credits = bw_data.absolute_credits_enable;
9105         veb->enabled_tc = ets_data.tc_valid_bits;
9106         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9107                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9108         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9109                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9110                 veb->bw_tc_limit_credits[i] =
9111                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9112                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9113         }
9114
9115 out:
9116         return ret;
9117 }
9118
9119 /**
9120  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9121  * @pf: board private structure
9122  *
9123  * On error: returns error code (negative)
9124  * On success: returns vsi index in PF (positive)
9125  **/
9126 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9127 {
9128         int ret = -ENOENT;
9129         struct i40e_veb *veb;
9130         int i;
9131
9132         /* Need to protect the allocation of switch elements at the PF level */
9133         mutex_lock(&pf->switch_mutex);
9134
9135         /* VEB list may be fragmented if VEB creation/destruction has
9136          * been happening.  We can afford to do a quick scan to look
9137          * for any free slots in the list.
9138          *
9139          * find next empty veb slot, looping back around if necessary
9140          */
9141         i = 0;
9142         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9143                 i++;
9144         if (i >= I40E_MAX_VEB) {
9145                 ret = -ENOMEM;
9146                 goto err_alloc_veb;  /* out of VEB slots! */
9147         }
9148
9149         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9150         if (!veb) {
9151                 ret = -ENOMEM;
9152                 goto err_alloc_veb;
9153         }
9154         veb->pf = pf;
9155         veb->idx = i;
9156         veb->enabled_tc = 1;
9157
9158         pf->veb[i] = veb;
9159         ret = i;
9160 err_alloc_veb:
9161         mutex_unlock(&pf->switch_mutex);
9162         return ret;
9163 }
9164
9165 /**
9166  * i40e_switch_branch_release - Delete a branch of the switch tree
9167  * @branch: where to start deleting
9168  *
9169  * This uses recursion to find the tips of the branch to be
9170  * removed, deleting until we get back to and can delete this VEB.
9171  **/
9172 static void i40e_switch_branch_release(struct i40e_veb *branch)
9173 {
9174         struct i40e_pf *pf = branch->pf;
9175         u16 branch_seid = branch->seid;
9176         u16 veb_idx = branch->idx;
9177         int i;
9178
9179         /* release any VEBs on this VEB - RECURSION */
9180         for (i = 0; i < I40E_MAX_VEB; i++) {
9181                 if (!pf->veb[i])
9182                         continue;
9183                 if (pf->veb[i]->uplink_seid == branch->seid)
9184                         i40e_switch_branch_release(pf->veb[i]);
9185         }
9186
9187         /* Release the VSIs on this VEB, but not the owner VSI.
9188          *
9189          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
9190          *       the VEB itself, so don't use (*branch) after this loop.
9191          */
9192         for (i = 0; i < pf->num_alloc_vsi; i++) {
9193                 if (!pf->vsi[i])
9194                         continue;
9195                 if (pf->vsi[i]->uplink_seid == branch_seid &&
9196                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9197                         i40e_vsi_release(pf->vsi[i]);
9198                 }
9199         }
9200
9201         /* There's one corner case where the VEB might not have been
9202          * removed, so double check it here and remove it if needed.
9203          * This case happens if the veb was created from the debugfs
9204          * commands and no VSIs were added to it.
9205          */
9206         if (pf->veb[veb_idx])
9207                 i40e_veb_release(pf->veb[veb_idx]);
9208 }
9209
9210 /**
9211  * i40e_veb_clear - remove veb struct
9212  * @veb: the veb to remove
9213  **/
9214 static void i40e_veb_clear(struct i40e_veb *veb)
9215 {
9216         if (!veb)
9217                 return;
9218
9219         if (veb->pf) {
9220                 struct i40e_pf *pf = veb->pf;
9221
9222                 mutex_lock(&pf->switch_mutex);
9223                 if (pf->veb[veb->idx] == veb)
9224                         pf->veb[veb->idx] = NULL;
9225                 mutex_unlock(&pf->switch_mutex);
9226         }
9227
9228         kfree(veb);
9229 }
9230
9231 /**
9232  * i40e_veb_release - Delete a VEB and free its resources
9233  * @veb: the VEB being removed
9234  **/
9235 void i40e_veb_release(struct i40e_veb *veb)
9236 {
9237         struct i40e_vsi *vsi = NULL;
9238         struct i40e_pf *pf;
9239         int i, n = 0;
9240
9241         pf = veb->pf;
9242
9243         /* find the remaining VSI and check for extras */
9244         for (i = 0; i < pf->num_alloc_vsi; i++) {
9245                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
9246                         n++;
9247                         vsi = pf->vsi[i];
9248                 }
9249         }
9250         if (n != 1) {
9251                 dev_info(&pf->pdev->dev,
9252                          "can't remove VEB %d with %d VSIs left\n",
9253                          veb->seid, n);
9254                 return;
9255         }
9256
9257         /* move the remaining VSI to uplink veb */
9258         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
9259         if (veb->uplink_seid) {
9260                 vsi->uplink_seid = veb->uplink_seid;
9261                 if (veb->uplink_seid == pf->mac_seid)
9262                         vsi->veb_idx = I40E_NO_VEB;
9263                 else
9264                         vsi->veb_idx = veb->veb_idx;
9265         } else {
9266                 /* floating VEB */
9267                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
9268                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
9269         }
9270
9271         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9272         i40e_veb_clear(veb);
9273 }
9274
9275 /**
9276  * i40e_add_veb - create the VEB in the switch
9277  * @veb: the VEB to be instantiated
9278  * @vsi: the controlling VSI
9279  **/
9280 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
9281 {
9282         struct i40e_pf *pf = veb->pf;
9283         bool is_default = false;
9284         bool is_cloud = false;
9285         int ret;
9286
9287         /* get a VEB from the hardware */
9288         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
9289                               veb->enabled_tc, is_default,
9290                               is_cloud, &veb->seid, NULL);
9291         if (ret) {
9292                 dev_info(&pf->pdev->dev,
9293                          "couldn't add VEB, err %s aq_err %s\n",
9294                          i40e_stat_str(&pf->hw, ret),
9295                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9296                 return -EPERM;
9297         }
9298
9299         /* get statistics counter */
9300         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
9301                                          &veb->stats_idx, NULL, NULL, NULL);
9302         if (ret) {
9303                 dev_info(&pf->pdev->dev,
9304                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
9305                          i40e_stat_str(&pf->hw, ret),
9306                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9307                 return -EPERM;
9308         }
9309         ret = i40e_veb_get_bw_info(veb);
9310         if (ret) {
9311                 dev_info(&pf->pdev->dev,
9312                          "couldn't get VEB bw info, err %s aq_err %s\n",
9313                          i40e_stat_str(&pf->hw, ret),
9314                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9315                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9316                 return -ENOENT;
9317         }
9318
9319         vsi->uplink_seid = veb->seid;
9320         vsi->veb_idx = veb->idx;
9321         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9322
9323         return 0;
9324 }
9325
9326 /**
9327  * i40e_veb_setup - Set up a VEB
9328  * @pf: board private structure
9329  * @flags: VEB setup flags
9330  * @uplink_seid: the switch element to link to
9331  * @vsi_seid: the initial VSI seid
9332  * @enabled_tc: Enabled TC bit-map
9333  *
9334  * This allocates the sw VEB structure and links it into the switch
9335  * It is possible and legal for this to be a duplicate of an already
9336  * existing VEB.  It is also possible for both uplink and vsi seids
9337  * to be zero, in order to create a floating VEB.
9338  *
9339  * Returns pointer to the successfully allocated VEB sw struct on
9340  * success, otherwise returns NULL on failure.
9341  **/
9342 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
9343                                 u16 uplink_seid, u16 vsi_seid,
9344                                 u8 enabled_tc)
9345 {
9346         struct i40e_veb *veb, *uplink_veb = NULL;
9347         int vsi_idx, veb_idx;
9348         int ret;
9349
9350         /* if one seid is 0, the other must be 0 to create a floating relay */
9351         if ((uplink_seid == 0 || vsi_seid == 0) &&
9352             (uplink_seid + vsi_seid != 0)) {
9353                 dev_info(&pf->pdev->dev,
9354                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
9355                          uplink_seid, vsi_seid);
9356                 return NULL;
9357         }
9358
9359         /* make sure there is such a vsi and uplink */
9360         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
9361                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
9362                         break;
9363         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
9364                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
9365                          vsi_seid);
9366                 return NULL;
9367         }
9368
9369         if (uplink_seid && uplink_seid != pf->mac_seid) {
9370                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
9371                         if (pf->veb[veb_idx] &&
9372                             pf->veb[veb_idx]->seid == uplink_seid) {
9373                                 uplink_veb = pf->veb[veb_idx];
9374                                 break;
9375                         }
9376                 }
9377                 if (!uplink_veb) {
9378                         dev_info(&pf->pdev->dev,
9379                                  "uplink seid %d not found\n", uplink_seid);
9380                         return NULL;
9381                 }
9382         }
9383
9384         /* get veb sw struct */
9385         veb_idx = i40e_veb_mem_alloc(pf);
9386         if (veb_idx < 0)
9387                 goto err_alloc;
9388         veb = pf->veb[veb_idx];
9389         veb->flags = flags;
9390         veb->uplink_seid = uplink_seid;
9391         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
9392         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
9393
9394         /* create the VEB in the switch */
9395         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
9396         if (ret)
9397                 goto err_veb;
9398         if (vsi_idx == pf->lan_vsi)
9399                 pf->lan_veb = veb->idx;
9400
9401         return veb;
9402
9403 err_veb:
9404         i40e_veb_clear(veb);
9405 err_alloc:
9406         return NULL;
9407 }
9408
9409 /**
9410  * i40e_setup_pf_switch_element - set PF vars based on switch type
9411  * @pf: board private structure
9412  * @ele: element we are building info from
9413  * @num_reported: total number of elements
9414  * @printconfig: should we print the contents
9415  *
9416  * helper function to assist in extracting a few useful SEID values.
9417  **/
9418 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
9419                                 struct i40e_aqc_switch_config_element_resp *ele,
9420                                 u16 num_reported, bool printconfig)
9421 {
9422         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
9423         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
9424         u8 element_type = ele->element_type;
9425         u16 seid = le16_to_cpu(ele->seid);
9426
9427         if (printconfig)
9428                 dev_info(&pf->pdev->dev,
9429                          "type=%d seid=%d uplink=%d downlink=%d\n",
9430                          element_type, seid, uplink_seid, downlink_seid);
9431
9432         switch (element_type) {
9433         case I40E_SWITCH_ELEMENT_TYPE_MAC:
9434                 pf->mac_seid = seid;
9435                 break;
9436         case I40E_SWITCH_ELEMENT_TYPE_VEB:
9437                 /* Main VEB? */
9438                 if (uplink_seid != pf->mac_seid)
9439                         break;
9440                 if (pf->lan_veb == I40E_NO_VEB) {
9441                         int v;
9442
9443                         /* find existing or else empty VEB */
9444                         for (v = 0; v < I40E_MAX_VEB; v++) {
9445                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
9446                                         pf->lan_veb = v;
9447                                         break;
9448                                 }
9449                         }
9450                         if (pf->lan_veb == I40E_NO_VEB) {
9451                                 v = i40e_veb_mem_alloc(pf);
9452                                 if (v < 0)
9453                                         break;
9454                                 pf->lan_veb = v;
9455                         }
9456                 }
9457
9458                 pf->veb[pf->lan_veb]->seid = seid;
9459                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
9460                 pf->veb[pf->lan_veb]->pf = pf;
9461                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
9462                 break;
9463         case I40E_SWITCH_ELEMENT_TYPE_VSI:
9464                 if (num_reported != 1)
9465                         break;
9466                 /* This is immediately after a reset so we can assume this is
9467                  * the PF's VSI
9468                  */
9469                 pf->mac_seid = uplink_seid;
9470                 pf->pf_seid = downlink_seid;
9471                 pf->main_vsi_seid = seid;
9472                 if (printconfig)
9473                         dev_info(&pf->pdev->dev,
9474                                  "pf_seid=%d main_vsi_seid=%d\n",
9475                                  pf->pf_seid, pf->main_vsi_seid);
9476                 break;
9477         case I40E_SWITCH_ELEMENT_TYPE_PF:
9478         case I40E_SWITCH_ELEMENT_TYPE_VF:
9479         case I40E_SWITCH_ELEMENT_TYPE_EMP:
9480         case I40E_SWITCH_ELEMENT_TYPE_BMC:
9481         case I40E_SWITCH_ELEMENT_TYPE_PE:
9482         case I40E_SWITCH_ELEMENT_TYPE_PA:
9483                 /* ignore these for now */
9484                 break;
9485         default:
9486                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
9487                          element_type, seid);
9488                 break;
9489         }
9490 }
9491
9492 /**
9493  * i40e_fetch_switch_configuration - Get switch config from firmware
9494  * @pf: board private structure
9495  * @printconfig: should we print the contents
9496  *
9497  * Get the current switch configuration from the device and
9498  * extract a few useful SEID values.
9499  **/
9500 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
9501 {
9502         struct i40e_aqc_get_switch_config_resp *sw_config;
9503         u16 next_seid = 0;
9504         int ret = 0;
9505         u8 *aq_buf;
9506         int i;
9507
9508         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
9509         if (!aq_buf)
9510                 return -ENOMEM;
9511
9512         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
9513         do {
9514                 u16 num_reported, num_total;
9515
9516                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
9517                                                 I40E_AQ_LARGE_BUF,
9518                                                 &next_seid, NULL);
9519                 if (ret) {
9520                         dev_info(&pf->pdev->dev,
9521                                  "get switch config failed err %s aq_err %s\n",
9522                                  i40e_stat_str(&pf->hw, ret),
9523                                  i40e_aq_str(&pf->hw,
9524                                              pf->hw.aq.asq_last_status));
9525                         kfree(aq_buf);
9526                         return -ENOENT;
9527                 }
9528
9529                 num_reported = le16_to_cpu(sw_config->header.num_reported);
9530                 num_total = le16_to_cpu(sw_config->header.num_total);
9531
9532                 if (printconfig)
9533                         dev_info(&pf->pdev->dev,
9534                                  "header: %d reported %d total\n",
9535                                  num_reported, num_total);
9536
9537                 for (i = 0; i < num_reported; i++) {
9538                         struct i40e_aqc_switch_config_element_resp *ele =
9539                                 &sw_config->element[i];
9540
9541                         i40e_setup_pf_switch_element(pf, ele, num_reported,
9542                                                      printconfig);
9543                 }
9544         } while (next_seid != 0);
9545
9546         kfree(aq_buf);
9547         return ret;
9548 }
9549
9550 /**
9551  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
9552  * @pf: board private structure
9553  * @reinit: if the Main VSI needs to re-initialized.
9554  *
9555  * Returns 0 on success, negative value on failure
9556  **/
9557 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
9558 {
9559         int ret;
9560
9561         /* find out what's out there already */
9562         ret = i40e_fetch_switch_configuration(pf, false);
9563         if (ret) {
9564                 dev_info(&pf->pdev->dev,
9565                          "couldn't fetch switch config, err %s aq_err %s\n",
9566                          i40e_stat_str(&pf->hw, ret),
9567                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9568                 return ret;
9569         }
9570         i40e_pf_reset_stats(pf);
9571
9572         /* first time setup */
9573         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
9574                 struct i40e_vsi *vsi = NULL;
9575                 u16 uplink_seid;
9576
9577                 /* Set up the PF VSI associated with the PF's main VSI
9578                  * that is already in the HW switch
9579                  */
9580                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
9581                         uplink_seid = pf->veb[pf->lan_veb]->seid;
9582                 else
9583                         uplink_seid = pf->mac_seid;
9584                 if (pf->lan_vsi == I40E_NO_VSI)
9585                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
9586                 else if (reinit)
9587                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
9588                 if (!vsi) {
9589                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
9590                         i40e_fdir_teardown(pf);
9591                         return -EAGAIN;
9592                 }
9593         } else {
9594                 /* force a reset of TC and queue layout configurations */
9595                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9596                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9597                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9598                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9599         }
9600         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
9601
9602         i40e_fdir_sb_setup(pf);
9603
9604         /* Setup static PF queue filter control settings */
9605         ret = i40e_setup_pf_filter_control(pf);
9606         if (ret) {
9607                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
9608                          ret);
9609                 /* Failure here should not stop continuing other steps */
9610         }
9611
9612         /* enable RSS in the HW, even for only one queue, as the stack can use
9613          * the hash
9614          */
9615         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
9616                 i40e_config_rss(pf);
9617
9618         /* fill in link information and enable LSE reporting */
9619         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
9620         i40e_link_event(pf);
9621
9622         /* Initialize user-specific link properties */
9623         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
9624                                   I40E_AQ_AN_COMPLETED) ? true : false);
9625
9626         i40e_ptp_init(pf);
9627
9628         return ret;
9629 }
9630
9631 /**
9632  * i40e_determine_queue_usage - Work out queue distribution
9633  * @pf: board private structure
9634  **/
9635 static void i40e_determine_queue_usage(struct i40e_pf *pf)
9636 {
9637         int queues_left;
9638
9639         pf->num_lan_qps = 0;
9640 #ifdef I40E_FCOE
9641         pf->num_fcoe_qps = 0;
9642 #endif
9643
9644         /* Find the max queues to be put into basic use.  We'll always be
9645          * using TC0, whether or not DCB is running, and TC0 will get the
9646          * big RSS set.
9647          */
9648         queues_left = pf->hw.func_caps.num_tx_qp;
9649
9650         if ((queues_left == 1) ||
9651             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
9652                 /* one qp for PF, no queues for anything else */
9653                 queues_left = 0;
9654                 pf->rss_size = pf->num_lan_qps = 1;
9655
9656                 /* make sure all the fancies are disabled */
9657                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9658 #ifdef I40E_FCOE
9659                                I40E_FLAG_FCOE_ENABLED   |
9660 #endif
9661                                I40E_FLAG_FD_SB_ENABLED  |
9662                                I40E_FLAG_FD_ATR_ENABLED |
9663                                I40E_FLAG_DCB_CAPABLE    |
9664                                I40E_FLAG_SRIOV_ENABLED  |
9665                                I40E_FLAG_VMDQ_ENABLED);
9666         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
9667                                   I40E_FLAG_FD_SB_ENABLED |
9668                                   I40E_FLAG_FD_ATR_ENABLED |
9669                                   I40E_FLAG_DCB_CAPABLE))) {
9670                 /* one qp for PF */
9671                 pf->rss_size = pf->num_lan_qps = 1;
9672                 queues_left -= pf->num_lan_qps;
9673
9674                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9675 #ifdef I40E_FCOE
9676                                I40E_FLAG_FCOE_ENABLED   |
9677 #endif
9678                                I40E_FLAG_FD_SB_ENABLED  |
9679                                I40E_FLAG_FD_ATR_ENABLED |
9680                                I40E_FLAG_DCB_ENABLED    |
9681                                I40E_FLAG_VMDQ_ENABLED);
9682         } else {
9683                 /* Not enough queues for all TCs */
9684                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
9685                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
9686                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9687                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
9688                 }
9689                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
9690                                         num_online_cpus());
9691                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
9692                                         pf->hw.func_caps.num_tx_qp);
9693
9694                 queues_left -= pf->num_lan_qps;
9695         }
9696
9697 #ifdef I40E_FCOE
9698         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
9699                 if (I40E_DEFAULT_FCOE <= queues_left) {
9700                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
9701                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
9702                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
9703                 } else {
9704                         pf->num_fcoe_qps = 0;
9705                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
9706                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
9707                 }
9708
9709                 queues_left -= pf->num_fcoe_qps;
9710         }
9711
9712 #endif
9713         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9714                 if (queues_left > 1) {
9715                         queues_left -= 1; /* save 1 queue for FD */
9716                 } else {
9717                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
9718                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
9719                 }
9720         }
9721
9722         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9723             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
9724                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
9725                                         (queues_left / pf->num_vf_qps));
9726                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
9727         }
9728
9729         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
9730             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
9731                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
9732                                           (queues_left / pf->num_vmdq_qps));
9733                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
9734         }
9735
9736         pf->queues_left = queues_left;
9737 #ifdef I40E_FCOE
9738         dev_info(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
9739 #endif
9740 }
9741
9742 /**
9743  * i40e_setup_pf_filter_control - Setup PF static filter control
9744  * @pf: PF to be setup
9745  *
9746  * i40e_setup_pf_filter_control sets up a PF's initial filter control
9747  * settings. If PE/FCoE are enabled then it will also set the per PF
9748  * based filter sizes required for them. It also enables Flow director,
9749  * ethertype and macvlan type filter settings for the pf.
9750  *
9751  * Returns 0 on success, negative on failure
9752  **/
9753 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
9754 {
9755         struct i40e_filter_control_settings *settings = &pf->filter_settings;
9756
9757         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
9758
9759         /* Flow Director is enabled */
9760         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
9761                 settings->enable_fdir = true;
9762
9763         /* Ethtype and MACVLAN filters enabled for PF */
9764         settings->enable_ethtype = true;
9765         settings->enable_macvlan = true;
9766
9767         if (i40e_set_filter_control(&pf->hw, settings))
9768                 return -ENOENT;
9769
9770         return 0;
9771 }
9772
9773 #define INFO_STRING_LEN 255
9774 static void i40e_print_features(struct i40e_pf *pf)
9775 {
9776         struct i40e_hw *hw = &pf->hw;
9777         char *buf, *string;
9778
9779         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
9780         if (!string) {
9781                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
9782                 return;
9783         }
9784
9785         buf = string;
9786
9787         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
9788 #ifdef CONFIG_PCI_IOV
9789         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
9790 #endif
9791         buf += sprintf(buf, "VSIs: %d QP: %d RX: %s ",
9792                        pf->hw.func_caps.num_vsis,
9793                        pf->vsi[pf->lan_vsi]->num_queue_pairs,
9794                        pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
9795
9796         if (pf->flags & I40E_FLAG_RSS_ENABLED)
9797                 buf += sprintf(buf, "RSS ");
9798         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
9799                 buf += sprintf(buf, "FD_ATR ");
9800         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9801                 buf += sprintf(buf, "FD_SB ");
9802                 buf += sprintf(buf, "NTUPLE ");
9803         }
9804         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
9805                 buf += sprintf(buf, "DCB ");
9806         if (pf->flags & I40E_FLAG_PTP)
9807                 buf += sprintf(buf, "PTP ");
9808 #ifdef I40E_FCOE
9809         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
9810                 buf += sprintf(buf, "FCOE ");
9811 #endif
9812
9813         BUG_ON(buf > (string + INFO_STRING_LEN));
9814         dev_info(&pf->pdev->dev, "%s\n", string);
9815         kfree(string);
9816 }
9817
9818 /**
9819  * i40e_probe - Device initialization routine
9820  * @pdev: PCI device information struct
9821  * @ent: entry in i40e_pci_tbl
9822  *
9823  * i40e_probe initializes a PF identified by a pci_dev structure.
9824  * The OS initialization, configuring of the PF private structure,
9825  * and a hardware reset occur.
9826  *
9827  * Returns 0 on success, negative on failure
9828  **/
9829 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9830 {
9831         struct i40e_aq_get_phy_abilities_resp abilities;
9832         unsigned long ioremap_len;
9833         struct i40e_pf *pf;
9834         struct i40e_hw *hw;
9835         static u16 pfs_found;
9836         u16 link_status;
9837         int err = 0;
9838         u32 len;
9839         u32 i;
9840
9841         err = pci_enable_device_mem(pdev);
9842         if (err)
9843                 return err;
9844
9845         /* set up for high or low dma */
9846         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
9847         if (err) {
9848                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
9849                 if (err) {
9850                         dev_err(&pdev->dev,
9851                                 "DMA configuration failed: 0x%x\n", err);
9852                         goto err_dma;
9853                 }
9854         }
9855
9856         /* set up pci connections */
9857         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
9858                                            IORESOURCE_MEM), i40e_driver_name);
9859         if (err) {
9860                 dev_info(&pdev->dev,
9861                          "pci_request_selected_regions failed %d\n", err);
9862                 goto err_pci_reg;
9863         }
9864
9865         pci_enable_pcie_error_reporting(pdev);
9866         pci_set_master(pdev);
9867
9868         /* Now that we have a PCI connection, we need to do the
9869          * low level device setup.  This is primarily setting up
9870          * the Admin Queue structures and then querying for the
9871          * device's current profile information.
9872          */
9873         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
9874         if (!pf) {
9875                 err = -ENOMEM;
9876                 goto err_pf_alloc;
9877         }
9878         pf->next_vsi = 0;
9879         pf->pdev = pdev;
9880         set_bit(__I40E_DOWN, &pf->state);
9881
9882         hw = &pf->hw;
9883         hw->back = pf;
9884
9885         ioremap_len = min_t(unsigned long, pci_resource_len(pdev, 0),
9886                             I40E_MAX_CSR_SPACE);
9887
9888         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), ioremap_len);
9889         if (!hw->hw_addr) {
9890                 err = -EIO;
9891                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
9892                          (unsigned int)pci_resource_start(pdev, 0),
9893                          (unsigned int)pci_resource_len(pdev, 0), err);
9894                 goto err_ioremap;
9895         }
9896         hw->vendor_id = pdev->vendor;
9897         hw->device_id = pdev->device;
9898         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
9899         hw->subsystem_vendor_id = pdev->subsystem_vendor;
9900         hw->subsystem_device_id = pdev->subsystem_device;
9901         hw->bus.device = PCI_SLOT(pdev->devfn);
9902         hw->bus.func = PCI_FUNC(pdev->devfn);
9903         pf->instance = pfs_found;
9904
9905         if (debug != -1) {
9906                 pf->msg_enable = pf->hw.debug_mask;
9907                 pf->msg_enable = debug;
9908         }
9909
9910         /* do a special CORER for clearing PXE mode once at init */
9911         if (hw->revision_id == 0 &&
9912             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
9913                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
9914                 i40e_flush(hw);
9915                 msleep(200);
9916                 pf->corer_count++;
9917
9918                 i40e_clear_pxe_mode(hw);
9919         }
9920
9921         /* Reset here to make sure all is clean and to define PF 'n' */
9922         i40e_clear_hw(hw);
9923         err = i40e_pf_reset(hw);
9924         if (err) {
9925                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
9926                 goto err_pf_reset;
9927         }
9928         pf->pfr_count++;
9929
9930         hw->aq.num_arq_entries = I40E_AQ_LEN;
9931         hw->aq.num_asq_entries = I40E_AQ_LEN;
9932         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9933         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9934         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
9935
9936         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
9937                  "%s-%s:misc",
9938                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
9939
9940         err = i40e_init_shared_code(hw);
9941         if (err) {
9942                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
9943                          err);
9944                 goto err_pf_reset;
9945         }
9946
9947         /* set up a default setting for link flow control */
9948         pf->hw.fc.requested_mode = I40E_FC_NONE;
9949
9950         err = i40e_init_adminq(hw);
9951         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
9952         if (err) {
9953                 dev_info(&pdev->dev,
9954                          "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");
9955                 goto err_pf_reset;
9956         }
9957
9958         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
9959             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
9960                 dev_info(&pdev->dev,
9961                          "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");
9962         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
9963                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
9964                 dev_info(&pdev->dev,
9965                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
9966
9967         i40e_verify_eeprom(pf);
9968
9969         /* Rev 0 hardware was never productized */
9970         if (hw->revision_id < 1)
9971                 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");
9972
9973         i40e_clear_pxe_mode(hw);
9974         err = i40e_get_capabilities(pf);
9975         if (err)
9976                 goto err_adminq_setup;
9977
9978         err = i40e_sw_init(pf);
9979         if (err) {
9980                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
9981                 goto err_sw_init;
9982         }
9983
9984         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
9985                                 hw->func_caps.num_rx_qp,
9986                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
9987         if (err) {
9988                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
9989                 goto err_init_lan_hmc;
9990         }
9991
9992         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
9993         if (err) {
9994                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
9995                 err = -ENOENT;
9996                 goto err_configure_lan_hmc;
9997         }
9998
9999         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10000          * Ignore error return codes because if it was already disabled via
10001          * hardware settings this will fail
10002          */
10003         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
10004             (pf->hw.aq.fw_maj_ver < 4)) {
10005                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10006                 i40e_aq_stop_lldp(hw, true, NULL);
10007         }
10008
10009         i40e_get_mac_addr(hw, hw->mac.addr);
10010         if (!is_valid_ether_addr(hw->mac.addr)) {
10011                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10012                 err = -EIO;
10013                 goto err_mac_addr;
10014         }
10015         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10016         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10017         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10018         if (is_valid_ether_addr(hw->mac.port_addr))
10019                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10020 #ifdef I40E_FCOE
10021         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10022         if (err)
10023                 dev_info(&pdev->dev,
10024                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10025         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10026                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10027                          hw->mac.san_addr);
10028                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10029         }
10030         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10031 #endif /* I40E_FCOE */
10032
10033         pci_set_drvdata(pdev, pf);
10034         pci_save_state(pdev);
10035 #ifdef CONFIG_I40E_DCB
10036         err = i40e_init_pf_dcb(pf);
10037         if (err) {
10038                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10039                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10040                 /* Continue without DCB enabled */
10041         }
10042 #endif /* CONFIG_I40E_DCB */
10043
10044         /* set up periodic task facility */
10045         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10046         pf->service_timer_period = HZ;
10047
10048         INIT_WORK(&pf->service_task, i40e_service_task);
10049         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10050         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10051         pf->link_check_timeout = jiffies;
10052
10053         /* WoL defaults to disabled */
10054         pf->wol_en = false;
10055         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10056
10057         /* set up the main switch operations */
10058         i40e_determine_queue_usage(pf);
10059         err = i40e_init_interrupt_scheme(pf);
10060         if (err)
10061                 goto err_switch_setup;
10062
10063         /* The number of VSIs reported by the FW is the minimum guaranteed
10064          * to us; HW supports far more and we share the remaining pool with
10065          * the other PFs. We allocate space for more than the guarantee with
10066          * the understanding that we might not get them all later.
10067          */
10068         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10069                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10070         else
10071                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10072
10073         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10074         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
10075         pf->vsi = kzalloc(len, GFP_KERNEL);
10076         if (!pf->vsi) {
10077                 err = -ENOMEM;
10078                 goto err_switch_setup;
10079         }
10080
10081 #ifdef CONFIG_PCI_IOV
10082         /* prep for VF support */
10083         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10084             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10085             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10086                 if (pci_num_vf(pdev))
10087                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
10088         }
10089 #endif
10090         err = i40e_setup_pf_switch(pf, false);
10091         if (err) {
10092                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
10093                 goto err_vsis;
10094         }
10095         /* if FDIR VSI was set up, start it now */
10096         for (i = 0; i < pf->num_alloc_vsi; i++) {
10097                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
10098                         i40e_vsi_open(pf->vsi[i]);
10099                         break;
10100                 }
10101         }
10102
10103         /* driver is only interested in link up/down and module qualification
10104          * reports from firmware
10105          */
10106         err = i40e_aq_set_phy_int_mask(&pf->hw,
10107                                        I40E_AQ_EVENT_LINK_UPDOWN |
10108                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
10109         if (err)
10110                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
10111                          i40e_stat_str(&pf->hw, err),
10112                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10113
10114         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
10115             (pf->hw.aq.fw_maj_ver < 4)) {
10116                 msleep(75);
10117                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
10118                 if (err)
10119                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
10120                                  i40e_stat_str(&pf->hw, err),
10121                                  i40e_aq_str(&pf->hw,
10122                                              pf->hw.aq.asq_last_status));
10123         }
10124         /* The main driver is (mostly) up and happy. We need to set this state
10125          * before setting up the misc vector or we get a race and the vector
10126          * ends up disabled forever.
10127          */
10128         clear_bit(__I40E_DOWN, &pf->state);
10129
10130         /* In case of MSIX we are going to setup the misc vector right here
10131          * to handle admin queue events etc. In case of legacy and MSI
10132          * the misc functionality and queue processing is combined in
10133          * the same vector and that gets setup at open.
10134          */
10135         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
10136                 err = i40e_setup_misc_vector(pf);
10137                 if (err) {
10138                         dev_info(&pdev->dev,
10139                                  "setup of misc vector failed: %d\n", err);
10140                         goto err_vsis;
10141                 }
10142         }
10143
10144 #ifdef CONFIG_PCI_IOV
10145         /* prep for VF support */
10146         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10147             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10148             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10149                 u32 val;
10150
10151                 /* disable link interrupts for VFs */
10152                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
10153                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
10154                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
10155                 i40e_flush(hw);
10156
10157                 if (pci_num_vf(pdev)) {
10158                         dev_info(&pdev->dev,
10159                                  "Active VFs found, allocating resources.\n");
10160                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
10161                         if (err)
10162                                 dev_info(&pdev->dev,
10163                                          "Error %d allocating resources for existing VFs\n",
10164                                          err);
10165                 }
10166         }
10167 #endif /* CONFIG_PCI_IOV */
10168
10169         pfs_found++;
10170
10171         i40e_dbg_pf_init(pf);
10172
10173         /* tell the firmware that we're starting */
10174         i40e_send_version(pf);
10175
10176         /* since everything's happy, start the service_task timer */
10177         mod_timer(&pf->service_timer,
10178                   round_jiffies(jiffies + pf->service_timer_period));
10179
10180 #ifdef I40E_FCOE
10181         /* create FCoE interface */
10182         i40e_fcoe_vsi_setup(pf);
10183
10184 #endif
10185         /* Get the negotiated link width and speed from PCI config space */
10186         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
10187
10188         i40e_set_pci_config_data(hw, link_status);
10189
10190         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
10191                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
10192                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
10193                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
10194                  "Unknown"),
10195                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
10196                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
10197                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
10198                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
10199                  "Unknown"));
10200
10201         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
10202             hw->bus.speed < i40e_bus_speed_8000) {
10203                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
10204                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
10205         }
10206
10207         /* get the requested speeds from the fw */
10208         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
10209         if (err)
10210                 dev_info(&pf->pdev->dev,
10211                          "get phy capabilities failed, err %s aq_err %s, advertised speed settings may not be correct\n",
10212                          i40e_stat_str(&pf->hw, err),
10213                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10214         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
10215
10216         /* print a string summarizing features */
10217         i40e_print_features(pf);
10218
10219         return 0;
10220
10221         /* Unwind what we've done if something failed in the setup */
10222 err_vsis:
10223         set_bit(__I40E_DOWN, &pf->state);
10224         i40e_clear_interrupt_scheme(pf);
10225         kfree(pf->vsi);
10226 err_switch_setup:
10227         i40e_reset_interrupt_capability(pf);
10228         del_timer_sync(&pf->service_timer);
10229 err_mac_addr:
10230 err_configure_lan_hmc:
10231         (void)i40e_shutdown_lan_hmc(hw);
10232 err_init_lan_hmc:
10233         kfree(pf->qp_pile);
10234 err_sw_init:
10235 err_adminq_setup:
10236         (void)i40e_shutdown_adminq(hw);
10237 err_pf_reset:
10238         iounmap(hw->hw_addr);
10239 err_ioremap:
10240         kfree(pf);
10241 err_pf_alloc:
10242         pci_disable_pcie_error_reporting(pdev);
10243         pci_release_selected_regions(pdev,
10244                                      pci_select_bars(pdev, IORESOURCE_MEM));
10245 err_pci_reg:
10246 err_dma:
10247         pci_disable_device(pdev);
10248         return err;
10249 }
10250
10251 /**
10252  * i40e_remove - Device removal routine
10253  * @pdev: PCI device information struct
10254  *
10255  * i40e_remove is called by the PCI subsystem to alert the driver
10256  * that is should release a PCI device.  This could be caused by a
10257  * Hot-Plug event, or because the driver is going to be removed from
10258  * memory.
10259  **/
10260 static void i40e_remove(struct pci_dev *pdev)
10261 {
10262         struct i40e_pf *pf = pci_get_drvdata(pdev);
10263         i40e_status ret_code;
10264         int i;
10265
10266         i40e_dbg_pf_exit(pf);
10267
10268         i40e_ptp_stop(pf);
10269
10270         /* no more scheduling of any task */
10271         set_bit(__I40E_DOWN, &pf->state);
10272         del_timer_sync(&pf->service_timer);
10273         cancel_work_sync(&pf->service_task);
10274         i40e_fdir_teardown(pf);
10275
10276         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
10277                 i40e_free_vfs(pf);
10278                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
10279         }
10280
10281         i40e_fdir_teardown(pf);
10282
10283         /* If there is a switch structure or any orphans, remove them.
10284          * This will leave only the PF's VSI remaining.
10285          */
10286         for (i = 0; i < I40E_MAX_VEB; i++) {
10287                 if (!pf->veb[i])
10288                         continue;
10289
10290                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
10291                     pf->veb[i]->uplink_seid == 0)
10292                         i40e_switch_branch_release(pf->veb[i]);
10293         }
10294
10295         /* Now we can shutdown the PF's VSI, just before we kill
10296          * adminq and hmc.
10297          */
10298         if (pf->vsi[pf->lan_vsi])
10299                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
10300
10301         /* shutdown and destroy the HMC */
10302         if (pf->hw.hmc.hmc_obj) {
10303                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
10304                 if (ret_code)
10305                         dev_warn(&pdev->dev,
10306                                  "Failed to destroy the HMC resources: %d\n",
10307                                  ret_code);
10308         }
10309
10310         /* shutdown the adminq */
10311         ret_code = i40e_shutdown_adminq(&pf->hw);
10312         if (ret_code)
10313                 dev_warn(&pdev->dev,
10314                          "Failed to destroy the Admin Queue resources: %d\n",
10315                          ret_code);
10316
10317         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
10318         i40e_clear_interrupt_scheme(pf);
10319         for (i = 0; i < pf->num_alloc_vsi; i++) {
10320                 if (pf->vsi[i]) {
10321                         i40e_vsi_clear_rings(pf->vsi[i]);
10322                         i40e_vsi_clear(pf->vsi[i]);
10323                         pf->vsi[i] = NULL;
10324                 }
10325         }
10326
10327         for (i = 0; i < I40E_MAX_VEB; i++) {
10328                 kfree(pf->veb[i]);
10329                 pf->veb[i] = NULL;
10330         }
10331
10332         kfree(pf->qp_pile);
10333         kfree(pf->vsi);
10334
10335         iounmap(pf->hw.hw_addr);
10336         kfree(pf);
10337         pci_release_selected_regions(pdev,
10338                                      pci_select_bars(pdev, IORESOURCE_MEM));
10339
10340         pci_disable_pcie_error_reporting(pdev);
10341         pci_disable_device(pdev);
10342 }
10343
10344 /**
10345  * i40e_pci_error_detected - warning that something funky happened in PCI land
10346  * @pdev: PCI device information struct
10347  *
10348  * Called to warn that something happened and the error handling steps
10349  * are in progress.  Allows the driver to quiesce things, be ready for
10350  * remediation.
10351  **/
10352 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
10353                                                 enum pci_channel_state error)
10354 {
10355         struct i40e_pf *pf = pci_get_drvdata(pdev);
10356
10357         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
10358
10359         /* shutdown all operations */
10360         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
10361                 rtnl_lock();
10362                 i40e_prep_for_reset(pf);
10363                 rtnl_unlock();
10364         }
10365
10366         /* Request a slot reset */
10367         return PCI_ERS_RESULT_NEED_RESET;
10368 }
10369
10370 /**
10371  * i40e_pci_error_slot_reset - a PCI slot reset just happened
10372  * @pdev: PCI device information struct
10373  *
10374  * Called to find if the driver can work with the device now that
10375  * the pci slot has been reset.  If a basic connection seems good
10376  * (registers are readable and have sane content) then return a
10377  * happy little PCI_ERS_RESULT_xxx.
10378  **/
10379 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
10380 {
10381         struct i40e_pf *pf = pci_get_drvdata(pdev);
10382         pci_ers_result_t result;
10383         int err;
10384         u32 reg;
10385
10386         dev_info(&pdev->dev, "%s\n", __func__);
10387         if (pci_enable_device_mem(pdev)) {
10388                 dev_info(&pdev->dev,
10389                          "Cannot re-enable PCI device after reset.\n");
10390                 result = PCI_ERS_RESULT_DISCONNECT;
10391         } else {
10392                 pci_set_master(pdev);
10393                 pci_restore_state(pdev);
10394                 pci_save_state(pdev);
10395                 pci_wake_from_d3(pdev, false);
10396
10397                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
10398                 if (reg == 0)
10399                         result = PCI_ERS_RESULT_RECOVERED;
10400                 else
10401                         result = PCI_ERS_RESULT_DISCONNECT;
10402         }
10403
10404         err = pci_cleanup_aer_uncorrect_error_status(pdev);
10405         if (err) {
10406                 dev_info(&pdev->dev,
10407                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
10408                          err);
10409                 /* non-fatal, continue */
10410         }
10411
10412         return result;
10413 }
10414
10415 /**
10416  * i40e_pci_error_resume - restart operations after PCI error recovery
10417  * @pdev: PCI device information struct
10418  *
10419  * Called to allow the driver to bring things back up after PCI error
10420  * and/or reset recovery has finished.
10421  **/
10422 static void i40e_pci_error_resume(struct pci_dev *pdev)
10423 {
10424         struct i40e_pf *pf = pci_get_drvdata(pdev);
10425
10426         dev_info(&pdev->dev, "%s\n", __func__);
10427         if (test_bit(__I40E_SUSPENDED, &pf->state))
10428                 return;
10429
10430         rtnl_lock();
10431         i40e_handle_reset_warning(pf);
10432         rtnl_lock();
10433 }
10434
10435 /**
10436  * i40e_shutdown - PCI callback for shutting down
10437  * @pdev: PCI device information struct
10438  **/
10439 static void i40e_shutdown(struct pci_dev *pdev)
10440 {
10441         struct i40e_pf *pf = pci_get_drvdata(pdev);
10442         struct i40e_hw *hw = &pf->hw;
10443
10444         set_bit(__I40E_SUSPENDED, &pf->state);
10445         set_bit(__I40E_DOWN, &pf->state);
10446         rtnl_lock();
10447         i40e_prep_for_reset(pf);
10448         rtnl_unlock();
10449
10450         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10451         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10452
10453         del_timer_sync(&pf->service_timer);
10454         cancel_work_sync(&pf->service_task);
10455         i40e_fdir_teardown(pf);
10456
10457         rtnl_lock();
10458         i40e_prep_for_reset(pf);
10459         rtnl_unlock();
10460
10461         wr32(hw, I40E_PFPM_APM,
10462              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10463         wr32(hw, I40E_PFPM_WUFC,
10464              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10465
10466         i40e_clear_interrupt_scheme(pf);
10467
10468         if (system_state == SYSTEM_POWER_OFF) {
10469                 pci_wake_from_d3(pdev, pf->wol_en);
10470                 pci_set_power_state(pdev, PCI_D3hot);
10471         }
10472 }
10473
10474 #ifdef CONFIG_PM
10475 /**
10476  * i40e_suspend - PCI callback for moving to D3
10477  * @pdev: PCI device information struct
10478  **/
10479 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
10480 {
10481         struct i40e_pf *pf = pci_get_drvdata(pdev);
10482         struct i40e_hw *hw = &pf->hw;
10483
10484         set_bit(__I40E_SUSPENDED, &pf->state);
10485         set_bit(__I40E_DOWN, &pf->state);
10486
10487         rtnl_lock();
10488         i40e_prep_for_reset(pf);
10489         rtnl_unlock();
10490
10491         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10492         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10493
10494         pci_wake_from_d3(pdev, pf->wol_en);
10495         pci_set_power_state(pdev, PCI_D3hot);
10496
10497         return 0;
10498 }
10499
10500 /**
10501  * i40e_resume - PCI callback for waking up from D3
10502  * @pdev: PCI device information struct
10503  **/
10504 static int i40e_resume(struct pci_dev *pdev)
10505 {
10506         struct i40e_pf *pf = pci_get_drvdata(pdev);
10507         u32 err;
10508
10509         pci_set_power_state(pdev, PCI_D0);
10510         pci_restore_state(pdev);
10511         /* pci_restore_state() clears dev->state_saves, so
10512          * call pci_save_state() again to restore it.
10513          */
10514         pci_save_state(pdev);
10515
10516         err = pci_enable_device_mem(pdev);
10517         if (err) {
10518                 dev_err(&pdev->dev,
10519                         "%s: Cannot enable PCI device from suspend\n",
10520                         __func__);
10521                 return err;
10522         }
10523         pci_set_master(pdev);
10524
10525         /* no wakeup events while running */
10526         pci_wake_from_d3(pdev, false);
10527
10528         /* handling the reset will rebuild the device state */
10529         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
10530                 clear_bit(__I40E_DOWN, &pf->state);
10531                 rtnl_lock();
10532                 i40e_reset_and_rebuild(pf, false);
10533                 rtnl_unlock();
10534         }
10535
10536         return 0;
10537 }
10538
10539 #endif
10540 static const struct pci_error_handlers i40e_err_handler = {
10541         .error_detected = i40e_pci_error_detected,
10542         .slot_reset = i40e_pci_error_slot_reset,
10543         .resume = i40e_pci_error_resume,
10544 };
10545
10546 static struct pci_driver i40e_driver = {
10547         .name     = i40e_driver_name,
10548         .id_table = i40e_pci_tbl,
10549         .probe    = i40e_probe,
10550         .remove   = i40e_remove,
10551 #ifdef CONFIG_PM
10552         .suspend  = i40e_suspend,
10553         .resume   = i40e_resume,
10554 #endif
10555         .shutdown = i40e_shutdown,
10556         .err_handler = &i40e_err_handler,
10557         .sriov_configure = i40e_pci_sriov_configure,
10558 };
10559
10560 /**
10561  * i40e_init_module - Driver registration routine
10562  *
10563  * i40e_init_module is the first routine called when the driver is
10564  * loaded. All it does is register with the PCI subsystem.
10565  **/
10566 static int __init i40e_init_module(void)
10567 {
10568         pr_info("%s: %s - version %s\n", i40e_driver_name,
10569                 i40e_driver_string, i40e_driver_version_str);
10570         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
10571
10572         i40e_dbg_init();
10573         return pci_register_driver(&i40e_driver);
10574 }
10575 module_init(i40e_init_module);
10576
10577 /**
10578  * i40e_exit_module - Driver exit cleanup routine
10579  *
10580  * i40e_exit_module is called just before the driver is removed
10581  * from memory.
10582  **/
10583 static void __exit i40e_exit_module(void)
10584 {
10585         pci_unregister_driver(&i40e_driver);
10586         i40e_dbg_exit();
10587 }
10588 module_exit(i40e_exit_module);