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

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 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 with
  16  * this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * The full GNU General Public License is included in this distribution in
  20  * the file called "COPYING".
  21  *
  22  * Contact Information:
  23  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  24  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  25  *
  26  ******************************************************************************/
  27
  28 /* Local includes */
  29 #include "i40e.h"
  30
  31 const char i40e_driver_name[] = "i40e";
  32 static const char i40e_driver_string[] =
  33                         "Intel(R) Ethernet Connection XL710 Network Driver";
  34
  35 #define DRV_KERN "-k"
  36
  37 #define DRV_VERSION_MAJOR 0
  38 #define DRV_VERSION_MINOR 3
  39 #define DRV_VERSION_BUILD 9
  40 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
  41              __stringify(DRV_VERSION_MINOR) "." \
  42              __stringify(DRV_VERSION_BUILD)    DRV_KERN
  43 const char i40e_driver_version_str[] = DRV_VERSION;
  44 static const char i40e_copyright[] = "Copyright (c) 2013 Intel Corporation.";
  45
  46 /* a bit of forward declarations */
  47 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  48 static void i40e_handle_reset_warning(struct i40e_pf *pf);
  49 static int i40e_add_vsi(struct i40e_vsi *vsi);
  50 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  51 static int i40e_setup_pf_switch(struct i40e_pf *pf);
  52 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  53 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  54 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  55
  56 /* i40e_pci_tbl - PCI Device ID Table
  57  *
  58  * Last entry must be all 0s
  59  *
  60  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  61  *   Class, Class Mask, private data (not used) }
  62  */
  63 static DEFINE_PCI_DEVICE_TABLE(i40e_pci_tbl) = {
  64         {PCI_VDEVICE(INTEL, I40E_SFP_XL710_DEVICE_ID), 0},
  65         {PCI_VDEVICE(INTEL, I40E_SFP_X710_DEVICE_ID), 0},
  66         {PCI_VDEVICE(INTEL, I40E_QEMU_DEVICE_ID), 0},
  67         {PCI_VDEVICE(INTEL, I40E_KX_A_DEVICE_ID), 0},
  68         {PCI_VDEVICE(INTEL, I40E_KX_B_DEVICE_ID), 0},
  69         {PCI_VDEVICE(INTEL, I40E_KX_C_DEVICE_ID), 0},
  70         {PCI_VDEVICE(INTEL, I40E_KX_D_DEVICE_ID), 0},
  71         {PCI_VDEVICE(INTEL, I40E_QSFP_A_DEVICE_ID), 0},
  72         {PCI_VDEVICE(INTEL, I40E_QSFP_B_DEVICE_ID), 0},
  73         {PCI_VDEVICE(INTEL, I40E_QSFP_C_DEVICE_ID), 0},
  74         /* required last entry */
  75         {0, }
  76 };
  77 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  78
  79 #define I40E_MAX_VF_COUNT 128
  80 static int debug = -1;
  81 module_param(debug, int, 0);
  82 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  83
  84 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  85 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  86 MODULE_LICENSE("GPL");
  87 MODULE_VERSION(DRV_VERSION);
  88
  89 /**
  90  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
  91  * @hw:   pointer to the HW structure
  92  * @mem:  ptr to mem struct to fill out
  93  * @size: size of memory requested
  94  * @alignment: what to align the allocation to
  95  **/
  96 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
  97                             u64 size, u32 alignment)
  98 {
  99         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 100
 101         mem->size = ALIGN(size, alignment);
 102         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 103                                       &mem->pa, GFP_KERNEL);
 104         if (!mem->va)
 105                 return -ENOMEM;
 106
 107         return 0;
 108 }
 109
 110 /**
 111  * i40e_free_dma_mem_d - OS specific memory free for shared code
 112  * @hw:   pointer to the HW structure
 113  * @mem:  ptr to mem struct to free
 114  **/
 115 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 116 {
 117         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 118
 119         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 120         mem->va = NULL;
 121         mem->pa = 0;
 122         mem->size = 0;
 123
 124         return 0;
 125 }
 126
 127 /**
 128  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 129  * @hw:   pointer to the HW structure
 130  * @mem:  ptr to mem struct to fill out
 131  * @size: size of memory requested
 132  **/
 133 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 134                              u32 size)
 135 {
 136         mem->size = size;
 137         mem->va = kzalloc(size, GFP_KERNEL);
 138
 139         if (!mem->va)
 140                 return -ENOMEM;
 141
 142         return 0;
 143 }
 144
 145 /**
 146  * i40e_free_virt_mem_d - OS specific memory free for shared code
 147  * @hw:   pointer to the HW structure
 148  * @mem:  ptr to mem struct to free
 149  **/
 150 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 151 {
 152         /* it's ok to kfree a NULL pointer */
 153         kfree(mem->va);
 154         mem->va = NULL;
 155         mem->size = 0;
 156
 157         return 0;
 158 }
 159
 160 /**
 161  * i40e_get_lump - find a lump of free generic resource
 162  * @pf: board private structure
 163  * @pile: the pile of resource to search
 164  * @needed: the number of items needed
 165  * @id: an owner id to stick on the items assigned
 166  *
 167  * Returns the base item index of the lump, or negative for error
 168  *
 169  * The search_hint trick and lack of advanced fit-finding only work
 170  * because we're highly likely to have all the same size lump requests.
 171  * Linear search time and any fragmentation should be minimal.
 172  **/
 173 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 174                          u16 needed, u16 id)
 175 {
 176         int ret = -ENOMEM;
 177         int i, j;
 178
 179         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 180                 dev_info(&pf->pdev->dev,
 181                          "param err: pile=%p needed=%d id=0x%04x\n",
 182                          pile, needed, id);
 183                 return -EINVAL;
 184         }
 185
 186         /* start the linear search with an imperfect hint */
 187         i = pile->search_hint;
 188         while (i < pile->num_entries) {
 189                 /* skip already allocated entries */
 190                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 191                         i++;
 192                         continue;
 193                 }
 194
 195                 /* do we have enough in this lump? */
 196                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 197                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 198                                 break;
 199                 }
 200
 201                 if (j == needed) {
 202                         /* there was enough, so assign it to the requestor */
 203                         for (j = 0; j < needed; j++)
 204                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 205                         ret = i;
 206                         pile->search_hint = i + j;
 207                         break;
 208                 } else {
 209                         /* not enough, so skip over it and continue looking */
 210                         i += j;
 211                 }
 212         }
 213
 214         return ret;
 215 }
 216
 217 /**
 218  * i40e_put_lump - return a lump of generic resource
 219  * @pile: the pile of resource to search
 220  * @index: the base item index
 221  * @id: the owner id of the items assigned
 222  *
 223  * Returns the count of items in the lump
 224  **/
 225 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 226 {
 227         int valid_id = (id | I40E_PILE_VALID_BIT);
 228         int count = 0;
 229         int i;
 230
 231         if (!pile || index >= pile->num_entries)
 232                 return -EINVAL;
 233
 234         for (i = index;
 235              i < pile->num_entries && pile->list[i] == valid_id;
 236              i++) {
 237                 pile->list[i] = 0;
 238                 count++;
 239         }
 240
 241         if (count && index < pile->search_hint)
 242                 pile->search_hint = index;
 243
 244         return count;
 245 }
 246
 247 /**
 248  * i40e_service_event_schedule - Schedule the service task to wake up
 249  * @pf: board private structure
 250  *
 251  * If not already scheduled, this puts the task into the work queue
 252  **/
 253 static void i40e_service_event_schedule(struct i40e_pf *pf)
 254 {
 255         if (!test_bit(__I40E_DOWN, &pf->state) &&
 256             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 257             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 258                 schedule_work(&pf->service_task);
 259 }
 260
 261 /**
 262  * i40e_tx_timeout - Respond to a Tx Hang
 263  * @netdev: network interface device structure
 264  *
 265  * If any port has noticed a Tx timeout, it is likely that the whole
 266  * device is munged, not just the one netdev port, so go for the full
 267  * reset.
 268  **/
 269 static void i40e_tx_timeout(struct net_device *netdev)
 270 {
 271         struct i40e_netdev_priv *np = netdev_priv(netdev);
 272         struct i40e_vsi *vsi = np->vsi;
 273         struct i40e_pf *pf = vsi->back;
 274
 275         pf->tx_timeout_count++;
 276
 277         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 278                 pf->tx_timeout_recovery_level = 0;
 279         pf->tx_timeout_last_recovery = jiffies;
 280         netdev_info(netdev, "tx_timeout recovery level %d\n",
 281                     pf->tx_timeout_recovery_level);
 282
 283         switch (pf->tx_timeout_recovery_level) {
 284         case 0:
 285                 /* disable and re-enable queues for the VSI */
 286                 if (in_interrupt()) {
 287                         set_bit(__I40E_REINIT_REQUESTED, &pf->state);
 288                         set_bit(__I40E_REINIT_REQUESTED, &vsi->state);
 289                 } else {
 290                         i40e_vsi_reinit_locked(vsi);
 291                 }
 292                 break;
 293         case 1:
 294                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 295                 break;
 296         case 2:
 297                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 298                 break;
 299         case 3:
 300                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 301                 break;
 302         default:
 303                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 304                 i40e_down(vsi);
 305                 break;
 306         }
 307         i40e_service_event_schedule(pf);
 308         pf->tx_timeout_recovery_level++;
 309 }
 310
 311 /**
 312  * i40e_release_rx_desc - Store the new tail and head values
 313  * @rx_ring: ring to bump
 314  * @val: new head index
 315  **/
 316 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 317 {
 318         rx_ring->next_to_use = val;
 319
 320         /* Force memory writes to complete before letting h/w
 321          * know there are new descriptors to fetch.  (Only
 322          * applicable for weak-ordered memory model archs,
 323          * such as IA-64).
 324          */
 325         wmb();
 326         writel(val, rx_ring->tail);
 327 }
 328
 329 /**
 330  * i40e_get_vsi_stats_struct - Get System Network Statistics
 331  * @vsi: the VSI we care about
 332  *
 333  * Returns the address of the device statistics structure.
 334  * The statistics are actually updated from the service task.
 335  **/
 336 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 337 {
 338         return &vsi->net_stats;
 339 }
 340
 341 /**
 342  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 343  * @netdev: network interface device structure
 344  *
 345  * Returns the address of the device statistics structure.
 346  * The statistics are actually updated from the service task.
 347  **/
 348 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 349                                              struct net_device *netdev,
 350                                              struct rtnl_link_stats64 *storage)
 351 {
 352         struct i40e_netdev_priv *np = netdev_priv(netdev);
 353         struct i40e_vsi *vsi = np->vsi;
 354
 355         *storage = *i40e_get_vsi_stats_struct(vsi);
 356
 357         return storage;
 358 }
 359
 360 /**
 361  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 362  * @vsi: the VSI to have its stats reset
 363  **/
 364 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 365 {
 366         struct rtnl_link_stats64 *ns;
 367         int i;
 368
 369         if (!vsi)
 370                 return;
 371
 372         ns = i40e_get_vsi_stats_struct(vsi);
 373         memset(ns, 0, sizeof(*ns));
 374         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 375         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 376         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 377         if (vsi->rx_rings)
 378                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 379                         memset(&vsi->rx_rings[i].rx_stats, 0 ,
 380                                sizeof(vsi->rx_rings[i].rx_stats));
 381                         memset(&vsi->tx_rings[i].tx_stats, 0,
 382                                sizeof(vsi->tx_rings[i].tx_stats));
 383                 }
 384         vsi->stat_offsets_loaded = false;
 385 }
 386
 387 /**
 388  * i40e_pf_reset_stats - Reset all of the stats for the given pf
 389  * @pf: the PF to be reset
 390  **/
 391 void i40e_pf_reset_stats(struct i40e_pf *pf)
 392 {
 393         memset(&pf->stats, 0, sizeof(pf->stats));
 394         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 395         pf->stat_offsets_loaded = false;
 396 }
 397
 398 /**
 399  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 400  * @hw: ptr to the hardware info
 401  * @hireg: the high 32 bit reg to read
 402  * @loreg: the low 32 bit reg to read
 403  * @offset_loaded: has the initial offset been loaded yet
 404  * @offset: ptr to current offset value
 405  * @stat: ptr to the stat
 406  *
 407  * Since the device stats are not reset at PFReset, they likely will not
 408  * be zeroed when the driver starts.  We'll save the first values read
 409  * and use them as offsets to be subtracted from the raw values in order
 410  * to report stats that count from zero.  In the process, we also manage
 411  * the potential roll-over.
 412  **/
 413 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 414                                bool offset_loaded, u64 *offset, u64 *stat)
 415 {
 416         u64 new_data;
 417
 418         if (hw->device_id == I40E_QEMU_DEVICE_ID) {
 419                 new_data = rd32(hw, loreg);
 420                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 421         } else {
 422                 new_data = rd64(hw, loreg);
 423         }
 424         if (!offset_loaded)
 425                 *offset = new_data;
 426         if (likely(new_data >= *offset))
 427                 *stat = new_data - *offset;
 428         else
 429                 *stat = (new_data + ((u64)1 << 48)) - *offset;
 430         *stat &= 0xFFFFFFFFFFFFULL;
 431 }
 432
 433 /**
 434  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 435  * @hw: ptr to the hardware info
 436  * @reg: the hw reg to read
 437  * @offset_loaded: has the initial offset been loaded yet
 438  * @offset: ptr to current offset value
 439  * @stat: ptr to the stat
 440  **/
 441 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 442                                bool offset_loaded, u64 *offset, u64 *stat)
 443 {
 444         u32 new_data;
 445
 446         new_data = rd32(hw, reg);
 447         if (!offset_loaded)
 448                 *offset = new_data;
 449         if (likely(new_data >= *offset))
 450                 *stat = (u32)(new_data - *offset);
 451         else
 452                 *stat = (u32)((new_data + ((u64)1 << 32)) - *offset);
 453 }
 454
 455 /**
 456  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 457  * @vsi: the VSI to be updated
 458  **/
 459 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 460 {
 461         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 462         struct i40e_pf *pf = vsi->back;
 463         struct i40e_hw *hw = &pf->hw;
 464         struct i40e_eth_stats *oes;
 465         struct i40e_eth_stats *es;     /* device's eth stats */
 466
 467         es = &vsi->eth_stats;
 468         oes = &vsi->eth_stats_offsets;
 469
 470         /* Gather up the stats that the hw collects */
 471         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 472                            vsi->stat_offsets_loaded,
 473                            &oes->tx_errors, &es->tx_errors);
 474         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 475                            vsi->stat_offsets_loaded,
 476                            &oes->rx_discards, &es->rx_discards);
 477
 478         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 479                            I40E_GLV_GORCL(stat_idx),
 480                            vsi->stat_offsets_loaded,
 481                            &oes->rx_bytes, &es->rx_bytes);
 482         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 483                            I40E_GLV_UPRCL(stat_idx),
 484                            vsi->stat_offsets_loaded,
 485                            &oes->rx_unicast, &es->rx_unicast);
 486         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 487                            I40E_GLV_MPRCL(stat_idx),
 488                            vsi->stat_offsets_loaded,
 489                            &oes->rx_multicast, &es->rx_multicast);
 490         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 491                            I40E_GLV_BPRCL(stat_idx),
 492                            vsi->stat_offsets_loaded,
 493                            &oes->rx_broadcast, &es->rx_broadcast);
 494
 495         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 496                            I40E_GLV_GOTCL(stat_idx),
 497                            vsi->stat_offsets_loaded,
 498                            &oes->tx_bytes, &es->tx_bytes);
 499         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 500                            I40E_GLV_UPTCL(stat_idx),
 501                            vsi->stat_offsets_loaded,
 502                            &oes->tx_unicast, &es->tx_unicast);
 503         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 504                            I40E_GLV_MPTCL(stat_idx),
 505                            vsi->stat_offsets_loaded,
 506                            &oes->tx_multicast, &es->tx_multicast);
 507         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 508                            I40E_GLV_BPTCL(stat_idx),
 509                            vsi->stat_offsets_loaded,
 510                            &oes->tx_broadcast, &es->tx_broadcast);
 511         vsi->stat_offsets_loaded = true;
 512 }
 513
 514 /**
 515  * i40e_update_veb_stats - Update Switch component statistics
 516  * @veb: the VEB being updated
 517  **/
 518 static void i40e_update_veb_stats(struct i40e_veb *veb)
 519 {
 520         struct i40e_pf *pf = veb->pf;
 521         struct i40e_hw *hw = &pf->hw;
 522         struct i40e_eth_stats *oes;
 523         struct i40e_eth_stats *es;     /* device's eth stats */
 524         int idx = 0;
 525
 526         idx = veb->stats_idx;
 527         es = &veb->stats;
 528         oes = &veb->stats_offsets;
 529
 530         /* Gather up the stats that the hw collects */
 531         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 532                            veb->stat_offsets_loaded,
 533                            &oes->tx_discards, &es->tx_discards);
 534         i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 535                            veb->stat_offsets_loaded,
 536                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 537
 538         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 539                            veb->stat_offsets_loaded,
 540                            &oes->rx_bytes, &es->rx_bytes);
 541         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 542                            veb->stat_offsets_loaded,
 543                            &oes->rx_unicast, &es->rx_unicast);
 544         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 545                            veb->stat_offsets_loaded,
 546                            &oes->rx_multicast, &es->rx_multicast);
 547         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 548                            veb->stat_offsets_loaded,
 549                            &oes->rx_broadcast, &es->rx_broadcast);
 550
 551         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 552                            veb->stat_offsets_loaded,
 553                            &oes->tx_bytes, &es->tx_bytes);
 554         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 555                            veb->stat_offsets_loaded,
 556                            &oes->tx_unicast, &es->tx_unicast);
 557         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 558                            veb->stat_offsets_loaded,
 559                            &oes->tx_multicast, &es->tx_multicast);
 560         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 561                            veb->stat_offsets_loaded,
 562                            &oes->tx_broadcast, &es->tx_broadcast);
 563         veb->stat_offsets_loaded = true;
 564 }
 565
 566 /**
 567  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 568  * @pf: the corresponding PF
 569  *
 570  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 571  **/
 572 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 573 {
 574         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 575         struct i40e_hw_port_stats *nsd = &pf->stats;
 576         struct i40e_hw *hw = &pf->hw;
 577         u64 xoff = 0;
 578         u16 i, v;
 579
 580         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 581             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 582                 return;
 583
 584         xoff = nsd->link_xoff_rx;
 585         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 586                            pf->stat_offsets_loaded,
 587                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 588
 589         /* No new LFC xoff rx */
 590         if (!(nsd->link_xoff_rx - xoff))
 591                 return;
 592
 593         /* Clear the __I40E_HANG_CHECK_ARMED bit for all Tx rings */
 594         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
 595                 struct i40e_vsi *vsi = pf->vsi[v];
 596
 597                 if (!vsi)
 598                         continue;
 599
 600                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 601                         struct i40e_ring *ring = &vsi->tx_rings[i];
 602                         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
 603                 }
 604         }
 605 }
 606
 607 /**
 608  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 609  * @pf: the corresponding PF
 610  *
 611  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 612  **/
 613 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 614 {
 615         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 616         struct i40e_hw_port_stats *nsd = &pf->stats;
 617         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 618         struct i40e_dcbx_config *dcb_cfg;
 619         struct i40e_hw *hw = &pf->hw;
 620         u16 i, v;
 621         u8 tc;
 622
 623         dcb_cfg = &hw->local_dcbx_config;
 624
 625         /* See if DCB enabled with PFC TC */
 626         if (!(pf->flags & I40E_FLAG_DCB_ENABLED) ||
 627             !(dcb_cfg->pfc.pfcenable)) {
 628                 i40e_update_link_xoff_rx(pf);
 629                 return;
 630         }
 631
 632         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 633                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 634                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 635                                    pf->stat_offsets_loaded,
 636                                    &osd->priority_xoff_rx[i],
 637                                    &nsd->priority_xoff_rx[i]);
 638
 639                 /* No new PFC xoff rx */
 640                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 641                         continue;
 642                 /* Get the TC for given priority */
 643                 tc = dcb_cfg->etscfg.prioritytable[i];
 644                 xoff[tc] = true;
 645         }
 646
 647         /* Clear the __I40E_HANG_CHECK_ARMED bit for Tx rings */
 648         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
 649                 struct i40e_vsi *vsi = pf->vsi[v];
 650
 651                 if (!vsi)
 652                         continue;
 653
 654                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 655                         struct i40e_ring *ring = &vsi->tx_rings[i];
 656
 657                         tc = ring->dcb_tc;
 658                         if (xoff[tc])
 659                                 clear_bit(__I40E_HANG_CHECK_ARMED,
 660                                           &ring->state);
 661                 }
 662         }
 663 }
 664
 665 /**
 666  * i40e_update_stats - Update the board statistics counters.
 667  * @vsi: the VSI to be updated
 668  *
 669  * There are a few instances where we store the same stat in a
 670  * couple of different structs.  This is partly because we have
 671  * the netdev stats that need to be filled out, which is slightly
 672  * different from the "eth_stats" defined by the chip and used in
 673  * VF communications.  We sort it all out here in a central place.
 674  **/
 675 void i40e_update_stats(struct i40e_vsi *vsi)
 676 {
 677         struct i40e_pf *pf = vsi->back;
 678         struct i40e_hw *hw = &pf->hw;
 679         struct rtnl_link_stats64 *ons;
 680         struct rtnl_link_stats64 *ns;   /* netdev stats */
 681         struct i40e_eth_stats *oes;
 682         struct i40e_eth_stats *es;     /* device's eth stats */
 683         u32 tx_restart, tx_busy;
 684         u32 rx_page, rx_buf;
 685         u64 rx_p, rx_b;
 686         u64 tx_p, tx_b;
 687         int i;
 688         u16 q;
 689
 690         if (test_bit(__I40E_DOWN, &vsi->state) ||
 691             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 692                 return;
 693
 694         ns = i40e_get_vsi_stats_struct(vsi);
 695         ons = &vsi->net_stats_offsets;
 696         es = &vsi->eth_stats;
 697         oes = &vsi->eth_stats_offsets;
 698
 699         /* Gather up the netdev and vsi stats that the driver collects
 700          * on the fly during packet processing
 701          */
 702         rx_b = rx_p = 0;
 703         tx_b = tx_p = 0;
 704         tx_restart = tx_busy = 0;
 705         rx_page = 0;
 706         rx_buf = 0;
 707         for (q = 0; q < vsi->num_queue_pairs; q++) {
 708                 struct i40e_ring *p;
 709
 710                 p = &vsi->rx_rings[q];
 711                 rx_b += p->rx_stats.bytes;
 712                 rx_p += p->rx_stats.packets;
 713                 rx_buf += p->rx_stats.alloc_rx_buff_failed;
 714                 rx_page += p->rx_stats.alloc_rx_page_failed;
 715
 716                 p = &vsi->tx_rings[q];
 717                 tx_b += p->tx_stats.bytes;
 718                 tx_p += p->tx_stats.packets;
 719                 tx_restart += p->tx_stats.restart_queue;
 720                 tx_busy += p->tx_stats.tx_busy;
 721         }
 722         vsi->tx_restart = tx_restart;
 723         vsi->tx_busy = tx_busy;
 724         vsi->rx_page_failed = rx_page;
 725         vsi->rx_buf_failed = rx_buf;
 726
 727         ns->rx_packets = rx_p;
 728         ns->rx_bytes = rx_b;
 729         ns->tx_packets = tx_p;
 730         ns->tx_bytes = tx_b;
 731
 732         i40e_update_eth_stats(vsi);
 733         /* update netdev stats from eth stats */
 734         ons->rx_errors = oes->rx_errors;
 735         ns->rx_errors = es->rx_errors;
 736         ons->tx_errors = oes->tx_errors;
 737         ns->tx_errors = es->tx_errors;
 738         ons->multicast = oes->rx_multicast;
 739         ns->multicast = es->rx_multicast;
 740         ons->tx_dropped = oes->tx_discards;
 741         ns->tx_dropped = es->tx_discards;
 742
 743         /* Get the port data only if this is the main PF VSI */
 744         if (vsi == pf->vsi[pf->lan_vsi]) {
 745                 struct i40e_hw_port_stats *nsd = &pf->stats;
 746                 struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 747
 748                 i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 749                                    I40E_GLPRT_GORCL(hw->port),
 750                                    pf->stat_offsets_loaded,
 751                                    &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 752                 i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 753                                    I40E_GLPRT_GOTCL(hw->port),
 754                                    pf->stat_offsets_loaded,
 755                                    &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 756                 i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 757                                    pf->stat_offsets_loaded,
 758                                    &osd->eth.rx_discards,
 759                                    &nsd->eth.rx_discards);
 760                 i40e_stat_update32(hw, I40E_GLPRT_TDPC(hw->port),
 761                                    pf->stat_offsets_loaded,
 762                                    &osd->eth.tx_discards,
 763                                    &nsd->eth.tx_discards);
 764                 i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 765                                    I40E_GLPRT_MPRCL(hw->port),
 766                                    pf->stat_offsets_loaded,
 767                                    &osd->eth.rx_multicast,
 768                                    &nsd->eth.rx_multicast);
 769
 770                 i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 771                                    pf->stat_offsets_loaded,
 772                                    &osd->tx_dropped_link_down,
 773                                    &nsd->tx_dropped_link_down);
 774
 775                 i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 776                                    pf->stat_offsets_loaded,
 777                                    &osd->crc_errors, &nsd->crc_errors);
 778                 ns->rx_crc_errors = nsd->crc_errors;
 779
 780                 i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 781                                    pf->stat_offsets_loaded,
 782                                    &osd->illegal_bytes, &nsd->illegal_bytes);
 783                 ns->rx_errors = nsd->crc_errors
 784                                 + nsd->illegal_bytes;
 785
 786                 i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 787                                    pf->stat_offsets_loaded,
 788                                    &osd->mac_local_faults,
 789                                    &nsd->mac_local_faults);
 790                 i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 791                                    pf->stat_offsets_loaded,
 792                                    &osd->mac_remote_faults,
 793                                    &nsd->mac_remote_faults);
 794
 795                 i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 796                                    pf->stat_offsets_loaded,
 797                                    &osd->rx_length_errors,
 798                                    &nsd->rx_length_errors);
 799                 ns->rx_length_errors = nsd->rx_length_errors;
 800
 801                 i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 802                                    pf->stat_offsets_loaded,
 803                                    &osd->link_xon_rx, &nsd->link_xon_rx);
 804                 i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 805                                    pf->stat_offsets_loaded,
 806                                    &osd->link_xon_tx, &nsd->link_xon_tx);
 807                 i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
 808                 i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 809                                    pf->stat_offsets_loaded,
 810                                    &osd->link_xoff_tx, &nsd->link_xoff_tx);
 811
 812                 for (i = 0; i < 8; i++) {
 813                         i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 814                                            pf->stat_offsets_loaded,
 815                                            &osd->priority_xon_rx[i],
 816                                            &nsd->priority_xon_rx[i]);
 817                         i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
 818                                            pf->stat_offsets_loaded,
 819                                            &osd->priority_xon_tx[i],
 820                                            &nsd->priority_xon_tx[i]);
 821                         i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
 822                                            pf->stat_offsets_loaded,
 823                                            &osd->priority_xoff_tx[i],
 824                                            &nsd->priority_xoff_tx[i]);
 825                         i40e_stat_update32(hw,
 826                                            I40E_GLPRT_RXON2OFFCNT(hw->port, i),
 827                                            pf->stat_offsets_loaded,
 828                                            &osd->priority_xon_2_xoff[i],
 829                                            &nsd->priority_xon_2_xoff[i]);
 830                 }
 831
 832                 i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
 833                                    I40E_GLPRT_PRC64L(hw->port),
 834                                    pf->stat_offsets_loaded,
 835                                    &osd->rx_size_64, &nsd->rx_size_64);
 836                 i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
 837                                    I40E_GLPRT_PRC127L(hw->port),
 838                                    pf->stat_offsets_loaded,
 839                                    &osd->rx_size_127, &nsd->rx_size_127);
 840                 i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
 841                                    I40E_GLPRT_PRC255L(hw->port),
 842                                    pf->stat_offsets_loaded,
 843                                    &osd->rx_size_255, &nsd->rx_size_255);
 844                 i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
 845                                    I40E_GLPRT_PRC511L(hw->port),
 846                                    pf->stat_offsets_loaded,
 847                                    &osd->rx_size_511, &nsd->rx_size_511);
 848                 i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
 849                                    I40E_GLPRT_PRC1023L(hw->port),
 850                                    pf->stat_offsets_loaded,
 851                                    &osd->rx_size_1023, &nsd->rx_size_1023);
 852                 i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
 853                                    I40E_GLPRT_PRC1522L(hw->port),
 854                                    pf->stat_offsets_loaded,
 855                                    &osd->rx_size_1522, &nsd->rx_size_1522);
 856                 i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
 857                                    I40E_GLPRT_PRC9522L(hw->port),
 858                                    pf->stat_offsets_loaded,
 859                                    &osd->rx_size_big, &nsd->rx_size_big);
 860
 861                 i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
 862                                    I40E_GLPRT_PTC64L(hw->port),
 863                                    pf->stat_offsets_loaded,
 864                                    &osd->tx_size_64, &nsd->tx_size_64);
 865                 i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
 866                                    I40E_GLPRT_PTC127L(hw->port),
 867                                    pf->stat_offsets_loaded,
 868                                    &osd->tx_size_127, &nsd->tx_size_127);
 869                 i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
 870                                    I40E_GLPRT_PTC255L(hw->port),
 871                                    pf->stat_offsets_loaded,
 872                                    &osd->tx_size_255, &nsd->tx_size_255);
 873                 i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
 874                                    I40E_GLPRT_PTC511L(hw->port),
 875                                    pf->stat_offsets_loaded,
 876                                    &osd->tx_size_511, &nsd->tx_size_511);
 877                 i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
 878                                    I40E_GLPRT_PTC1023L(hw->port),
 879                                    pf->stat_offsets_loaded,
 880                                    &osd->tx_size_1023, &nsd->tx_size_1023);
 881                 i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
 882                                    I40E_GLPRT_PTC1522L(hw->port),
 883                                    pf->stat_offsets_loaded,
 884                                    &osd->tx_size_1522, &nsd->tx_size_1522);
 885                 i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
 886                                    I40E_GLPRT_PTC9522L(hw->port),
 887                                    pf->stat_offsets_loaded,
 888                                    &osd->tx_size_big, &nsd->tx_size_big);
 889
 890                 i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
 891                                    pf->stat_offsets_loaded,
 892                                    &osd->rx_undersize, &nsd->rx_undersize);
 893                 i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
 894                                    pf->stat_offsets_loaded,
 895                                    &osd->rx_fragments, &nsd->rx_fragments);
 896                 i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
 897                                    pf->stat_offsets_loaded,
 898                                    &osd->rx_oversize, &nsd->rx_oversize);
 899                 i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
 900                                    pf->stat_offsets_loaded,
 901                                    &osd->rx_jabber, &nsd->rx_jabber);
 902         }
 903
 904         pf->stat_offsets_loaded = true;
 905 }
 906
 907 /**
 908  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
 909  * @vsi: the VSI to be searched
 910  * @macaddr: the MAC address
 911  * @vlan: the vlan
 912  * @is_vf: make sure its a vf filter, else doesn't matter
 913  * @is_netdev: make sure its a netdev filter, else doesn't matter
 914  *
 915  * Returns ptr to the filter object or NULL
 916  **/
 917 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
 918                                                 u8 *macaddr, s16 vlan,
 919                                                 bool is_vf, bool is_netdev)
 920 {
 921         struct i40e_mac_filter *f;
 922
 923         if (!vsi || !macaddr)
 924                 return NULL;
 925
 926         list_for_each_entry(f, &vsi->mac_filter_list, list) {
 927                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
 928                     (vlan == f->vlan)    &&
 929                     (!is_vf || f->is_vf) &&
 930                     (!is_netdev || f->is_netdev))
 931                         return f;
 932         }
 933         return NULL;
 934 }
 935
 936 /**
 937  * i40e_find_mac - Find a mac addr in the macvlan filters list
 938  * @vsi: the VSI to be searched
 939  * @macaddr: the MAC address we are searching for
 940  * @is_vf: make sure its a vf filter, else doesn't matter
 941  * @is_netdev: make sure its a netdev filter, else doesn't matter
 942  *
 943  * Returns the first filter with the provided MAC address or NULL if
 944  * MAC address was not found
 945  **/
 946 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
 947                                       bool is_vf, bool is_netdev)
 948 {
 949         struct i40e_mac_filter *f;
 950
 951         if (!vsi || !macaddr)
 952                 return NULL;
 953
 954         list_for_each_entry(f, &vsi->mac_filter_list, list) {
 955                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
 956                     (!is_vf || f->is_vf) &&
 957                     (!is_netdev || f->is_netdev))
 958                         return f;
 959         }
 960         return NULL;
 961 }
 962
 963 /**
 964  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
 965  * @vsi: the VSI to be searched
 966  *
 967  * Returns true if VSI is in vlan mode or false otherwise
 968  **/
 969 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
 970 {
 971         struct i40e_mac_filter *f;
 972
 973         /* Only -1 for all the filters denotes not in vlan mode
 974          * so we have to go through all the list in order to make sure
 975          */
 976         list_for_each_entry(f, &vsi->mac_filter_list, list) {
 977                 if (f->vlan >= 0)
 978                         return true;
 979         }
 980
 981         return false;
 982 }
 983
 984 /**
 985  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
 986  * @vsi: the VSI to be searched
 987  * @macaddr: the mac address to be filtered
 988  * @is_vf: true if it is a vf
 989  * @is_netdev: true if it is a netdev
 990  *
 991  * Goes through all the macvlan filters and adds a
 992  * macvlan filter for each unique vlan that already exists
 993  *
 994  * Returns first filter found on success, else NULL
 995  **/
 996 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
 997                                              bool is_vf, bool is_netdev)
 998 {
 999         struct i40e_mac_filter *f;
1000
1001         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1002                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1003                                       is_vf, is_netdev)) {
1004                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1005                                                 is_vf, is_netdev))
1006                                 return NULL;
1007                 }
1008         }
1009
1010         return list_first_entry_or_null(&vsi->mac_filter_list,
1011                                         struct i40e_mac_filter, list);
1012 }
1013
1014 /**
1015  * i40e_add_filter - Add a mac/vlan filter to the VSI
1016  * @vsi: the VSI to be searched
1017  * @macaddr: the MAC address
1018  * @vlan: the vlan
1019  * @is_vf: make sure its a vf filter, else doesn't matter
1020  * @is_netdev: make sure its a netdev filter, else doesn't matter
1021  *
1022  * Returns ptr to the filter object or NULL when no memory available.
1023  **/
1024 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1025                                         u8 *macaddr, s16 vlan,
1026                                         bool is_vf, bool is_netdev)
1027 {
1028         struct i40e_mac_filter *f;
1029
1030         if (!vsi || !macaddr)
1031                 return NULL;
1032
1033         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1034         if (!f) {
1035                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1036                 if (!f)
1037                         goto add_filter_out;
1038
1039                 memcpy(f->macaddr, macaddr, ETH_ALEN);
1040                 f->vlan = vlan;
1041                 f->changed = true;
1042
1043                 INIT_LIST_HEAD(&f->list);
1044                 list_add(&f->list, &vsi->mac_filter_list);
1045         }
1046
1047         /* increment counter and add a new flag if needed */
1048         if (is_vf) {
1049                 if (!f->is_vf) {
1050                         f->is_vf = true;
1051                         f->counter++;
1052                 }
1053         } else if (is_netdev) {
1054                 if (!f->is_netdev) {
1055                         f->is_netdev = true;
1056                         f->counter++;
1057                 }
1058         } else {
1059                 f->counter++;
1060         }
1061
1062         /* changed tells sync_filters_subtask to
1063          * push the filter down to the firmware
1064          */
1065         if (f->changed) {
1066                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1067                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1068         }
1069
1070 add_filter_out:
1071         return f;
1072 }
1073
1074 /**
1075  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1076  * @vsi: the VSI to be searched
1077  * @macaddr: the MAC address
1078  * @vlan: the vlan
1079  * @is_vf: make sure it's a vf filter, else doesn't matter
1080  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1081  **/
1082 void i40e_del_filter(struct i40e_vsi *vsi,
1083                      u8 *macaddr, s16 vlan,
1084                      bool is_vf, bool is_netdev)
1085 {
1086         struct i40e_mac_filter *f;
1087
1088         if (!vsi || !macaddr)
1089                 return;
1090
1091         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1092         if (!f || f->counter == 0)
1093                 return;
1094
1095         if (is_vf) {
1096                 if (f->is_vf) {
1097                         f->is_vf = false;
1098                         f->counter--;
1099                 }
1100         } else if (is_netdev) {
1101                 if (f->is_netdev) {
1102                         f->is_netdev = false;
1103                         f->counter--;
1104                 }
1105         } else {
1106                 /* make sure we don't remove a filter in use by vf or netdev */
1107                 int min_f = 0;
1108                 min_f += (f->is_vf ? 1 : 0);
1109                 min_f += (f->is_netdev ? 1 : 0);
1110
1111                 if (f->counter > min_f)
1112                         f->counter--;
1113         }
1114
1115         /* counter == 0 tells sync_filters_subtask to
1116          * remove the filter from the firmware's list
1117          */
1118         if (f->counter == 0) {
1119                 f->changed = true;
1120                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1121                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1122         }
1123 }
1124
1125 /**
1126  * i40e_set_mac - NDO callback to set mac address
1127  * @netdev: network interface device structure
1128  * @p: pointer to an address structure
1129  *
1130  * Returns 0 on success, negative on failure
1131  **/
1132 static int i40e_set_mac(struct net_device *netdev, void *p)
1133 {
1134         struct i40e_netdev_priv *np = netdev_priv(netdev);
1135         struct i40e_vsi *vsi = np->vsi;
1136         struct sockaddr *addr = p;
1137         struct i40e_mac_filter *f;
1138
1139         if (!is_valid_ether_addr(addr->sa_data))
1140                 return -EADDRNOTAVAIL;
1141
1142         netdev_info(netdev, "set mac address=%pM\n", addr->sa_data);
1143
1144         if (ether_addr_equal(netdev->dev_addr, addr->sa_data))
1145                 return 0;
1146
1147         if (vsi->type == I40E_VSI_MAIN) {
1148                 i40e_status ret;
1149                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1150                                                 I40E_AQC_WRITE_TYPE_LAA_ONLY,
1151                                                 addr->sa_data, NULL);
1152                 if (ret) {
1153                         netdev_info(netdev,
1154                                     "Addr change for Main VSI failed: %d\n",
1155                                     ret);
1156                         return -EADDRNOTAVAIL;
1157                 }
1158
1159                 memcpy(vsi->back->hw.mac.addr, addr->sa_data, netdev->addr_len);
1160         }
1161
1162         /* In order to be sure to not drop any packets, add the new address
1163          * then delete the old one.
1164          */
1165         f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY, false, false);
1166         if (!f)
1167                 return -ENOMEM;
1168
1169         i40e_sync_vsi_filters(vsi);
1170         i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY, false, false);
1171         i40e_sync_vsi_filters(vsi);
1172
1173         memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
1174
1175         return 0;
1176 }
1177
1178 /**
1179  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1180  * @vsi: the VSI being setup
1181  * @ctxt: VSI context structure
1182  * @enabled_tc: Enabled TCs bitmap
1183  * @is_add: True if called before Add VSI
1184  *
1185  * Setup VSI queue mapping for enabled traffic classes.
1186  **/
1187 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1188                                      struct i40e_vsi_context *ctxt,
1189                                      u8 enabled_tc,
1190                                      bool is_add)
1191 {
1192         struct i40e_pf *pf = vsi->back;
1193         u16 sections = 0;
1194         u8 netdev_tc = 0;
1195         u16 numtc = 0;
1196         u16 qcount;
1197         u8 offset;
1198         u16 qmap;
1199         int i;
1200
1201         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1202         offset = 0;
1203
1204         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1205                 /* Find numtc from enabled TC bitmap */
1206                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1207                         if (enabled_tc & (1 << i)) /* TC is enabled */
1208                                 numtc++;
1209                 }
1210                 if (!numtc) {
1211                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1212                         numtc = 1;
1213                 }
1214         } else {
1215                 /* At least TC0 is enabled in case of non-DCB case */
1216                 numtc = 1;
1217         }
1218
1219         vsi->tc_config.numtc = numtc;
1220         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1221
1222         /* Setup queue offset/count for all TCs for given VSI */
1223         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1224                 /* See if the given TC is enabled for the given VSI */
1225                 if (vsi->tc_config.enabled_tc & (1 << i)) { /* TC is enabled */
1226                         int pow, num_qps;
1227
1228                         vsi->tc_config.tc_info[i].qoffset = offset;
1229                         switch (vsi->type) {
1230                         case I40E_VSI_MAIN:
1231                                 if (i == 0)
1232                                         qcount = pf->rss_size;
1233                                 else
1234                                         qcount = pf->num_tc_qps;
1235                                 vsi->tc_config.tc_info[i].qcount = qcount;
1236                                 break;
1237                         case I40E_VSI_FDIR:
1238                         case I40E_VSI_SRIOV:
1239                         case I40E_VSI_VMDQ2:
1240                         default:
1241                                 qcount = vsi->alloc_queue_pairs;
1242                                 vsi->tc_config.tc_info[i].qcount = qcount;
1243                                 WARN_ON(i != 0);
1244                                 break;
1245                         }
1246
1247                         /* find the power-of-2 of the number of queue pairs */
1248                         num_qps = vsi->tc_config.tc_info[i].qcount;
1249                         pow = 0;
1250                         while (num_qps &&
1251                               ((1 << pow) < vsi->tc_config.tc_info[i].qcount)) {
1252                                 pow++;
1253                                 num_qps >>= 1;
1254                         }
1255
1256                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1257                         qmap =
1258                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1259                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1260
1261                         offset += vsi->tc_config.tc_info[i].qcount;
1262                 } else {
1263                         /* TC is not enabled so set the offset to
1264                          * default queue and allocate one queue
1265                          * for the given TC.
1266                          */
1267                         vsi->tc_config.tc_info[i].qoffset = 0;
1268                         vsi->tc_config.tc_info[i].qcount = 1;
1269                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1270
1271                         qmap = 0;
1272                 }
1273                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1274         }
1275
1276         /* Set actual Tx/Rx queue pairs */
1277         vsi->num_queue_pairs = offset;
1278
1279         /* Scheduler section valid can only be set for ADD VSI */
1280         if (is_add) {
1281                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1282
1283                 ctxt->info.up_enable_bits = enabled_tc;
1284         }
1285         if (vsi->type == I40E_VSI_SRIOV) {
1286                 ctxt->info.mapping_flags |=
1287                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1288                 for (i = 0; i < vsi->num_queue_pairs; i++)
1289                         ctxt->info.queue_mapping[i] =
1290                                                cpu_to_le16(vsi->base_queue + i);
1291         } else {
1292                 ctxt->info.mapping_flags |=
1293                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1294                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1295         }
1296         ctxt->info.valid_sections |= cpu_to_le16(sections);
1297 }
1298
1299 /**
1300  * i40e_set_rx_mode - NDO callback to set the netdev filters
1301  * @netdev: network interface device structure
1302  **/
1303 static void i40e_set_rx_mode(struct net_device *netdev)
1304 {
1305         struct i40e_netdev_priv *np = netdev_priv(netdev);
1306         struct i40e_mac_filter *f, *ftmp;
1307         struct i40e_vsi *vsi = np->vsi;
1308         struct netdev_hw_addr *uca;
1309         struct netdev_hw_addr *mca;
1310         struct netdev_hw_addr *ha;
1311
1312         /* add addr if not already in the filter list */
1313         netdev_for_each_uc_addr(uca, netdev) {
1314                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1315                         if (i40e_is_vsi_in_vlan(vsi))
1316                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1317                                                      false, true);
1318                         else
1319                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1320                                                 false, true);
1321                 }
1322         }
1323
1324         netdev_for_each_mc_addr(mca, netdev) {
1325                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1326                         if (i40e_is_vsi_in_vlan(vsi))
1327                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1328                                                      false, true);
1329                         else
1330                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1331                                                 false, true);
1332                 }
1333         }
1334
1335         /* remove filter if not in netdev list */
1336         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1337                 bool found = false;
1338
1339                 if (!f->is_netdev)
1340                         continue;
1341
1342                 if (is_multicast_ether_addr(f->macaddr)) {
1343                         netdev_for_each_mc_addr(mca, netdev) {
1344                                 if (ether_addr_equal(mca->addr, f->macaddr)) {
1345                                         found = true;
1346                                         break;
1347                                 }
1348                         }
1349                 } else {
1350                         netdev_for_each_uc_addr(uca, netdev) {
1351                                 if (ether_addr_equal(uca->addr, f->macaddr)) {
1352                                         found = true;
1353                                         break;
1354                                 }
1355                         }
1356
1357                         for_each_dev_addr(netdev, ha) {
1358                                 if (ether_addr_equal(ha->addr, f->macaddr)) {
1359                                         found = true;
1360                                         break;
1361                                 }
1362                         }
1363                 }
1364                 if (!found)
1365                         i40e_del_filter(
1366                            vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1367         }
1368
1369         /* check for other flag changes */
1370         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1371                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1372                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1373         }
1374 }
1375
1376 /**
1377  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1378  * @vsi: ptr to the VSI
1379  *
1380  * Push any outstanding VSI filter changes through the AdminQ.
1381  *
1382  * Returns 0 or error value
1383  **/
1384 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1385 {
1386         struct i40e_mac_filter *f, *ftmp;
1387         bool promisc_forced_on = false;
1388         bool add_happened = false;
1389         int filter_list_len = 0;
1390         u32 changed_flags = 0;
1391         i40e_status aq_ret = 0;
1392         struct i40e_pf *pf;
1393         int num_add = 0;
1394         int num_del = 0;
1395         u16 cmd_flags;
1396
1397         /* empty array typed pointers, kcalloc later */
1398         struct i40e_aqc_add_macvlan_element_data *add_list;
1399         struct i40e_aqc_remove_macvlan_element_data *del_list;
1400
1401         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1402                 usleep_range(1000, 2000);
1403         pf = vsi->back;
1404
1405         if (vsi->netdev) {
1406                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1407                 vsi->current_netdev_flags = vsi->netdev->flags;
1408         }
1409
1410         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1411                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1412
1413                 filter_list_len = pf->hw.aq.asq_buf_size /
1414                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1415                 del_list = kcalloc(filter_list_len,
1416                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1417                             GFP_KERNEL);
1418                 if (!del_list)
1419                         return -ENOMEM;
1420
1421                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1422                         if (!f->changed)
1423                                 continue;
1424
1425                         if (f->counter != 0)
1426                                 continue;
1427                         f->changed = false;
1428                         cmd_flags = 0;
1429
1430                         /* add to delete list */
1431                         memcpy(del_list[num_del].mac_addr,
1432                                f->macaddr, ETH_ALEN);
1433                         del_list[num_del].vlan_tag =
1434                                 cpu_to_le16((u16)(f->vlan ==
1435                                             I40E_VLAN_ANY ? 0 : f->vlan));
1436
1437                         /* vlan0 as wild card to allow packets from all vlans */
1438                         if (f->vlan == I40E_VLAN_ANY ||
1439                             (vsi->netdev && !(vsi->netdev->features &
1440                                               NETIF_F_HW_VLAN_CTAG_FILTER)))
1441                                 cmd_flags |= I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1442                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1443                         del_list[num_del].flags = cmd_flags;
1444                         num_del++;
1445
1446                         /* unlink from filter list */
1447                         list_del(&f->list);
1448                         kfree(f);
1449
1450                         /* flush a full buffer */
1451                         if (num_del == filter_list_len) {
1452                                 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
1453                                             vsi->seid, del_list, num_del,
1454                                             NULL);
1455                                 num_del = 0;
1456                                 memset(del_list, 0, sizeof(*del_list));
1457
1458                                 if (aq_ret)
1459                                         dev_info(&pf->pdev->dev,
1460                                                  "ignoring delete macvlan error, err %d, aq_err %d while flushing a full buffer\n",
1461                                                  aq_ret,
1462                                                  pf->hw.aq.asq_last_status);
1463                         }
1464                 }
1465                 if (num_del) {
1466                         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1467                                                      del_list, num_del, NULL);
1468                         num_del = 0;
1469
1470                         if (aq_ret)
1471                                 dev_info(&pf->pdev->dev,
1472                                          "ignoring delete macvlan error, err %d, aq_err %d\n",
1473                                          aq_ret, pf->hw.aq.asq_last_status);
1474                 }
1475
1476                 kfree(del_list);
1477                 del_list = NULL;
1478
1479                 /* do all the adds now */
1480                 filter_list_len = pf->hw.aq.asq_buf_size /
1481                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1482                 add_list = kcalloc(filter_list_len,
1483                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1484                                GFP_KERNEL);
1485                 if (!add_list)
1486                         return -ENOMEM;
1487
1488                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1489                         if (!f->changed)
1490                                 continue;
1491
1492                         if (f->counter == 0)
1493                                 continue;
1494                         f->changed = false;
1495                         add_happened = true;
1496                         cmd_flags = 0;
1497
1498                         /* add to add array */
1499                         memcpy(add_list[num_add].mac_addr,
1500                                f->macaddr, ETH_ALEN);
1501                         add_list[num_add].vlan_tag =
1502                                 cpu_to_le16(
1503                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1504                         add_list[num_add].queue_number = 0;
1505
1506                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1507
1508                         /* vlan0 as wild card to allow packets from all vlans */
1509                         if (f->vlan == I40E_VLAN_ANY || (vsi->netdev &&
1510                             !(vsi->netdev->features &
1511                                                  NETIF_F_HW_VLAN_CTAG_FILTER)))
1512                                 cmd_flags |= I40E_AQC_MACVLAN_ADD_IGNORE_VLAN;
1513                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1514                         num_add++;
1515
1516                         /* flush a full buffer */
1517                         if (num_add == filter_list_len) {
1518                                 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1519                                                              add_list, num_add,
1520                                                              NULL);
1521                                 num_add = 0;
1522
1523                                 if (aq_ret)
1524                                         break;
1525                                 memset(add_list, 0, sizeof(*add_list));
1526                         }
1527                 }
1528                 if (num_add) {
1529                         aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1530                                                      add_list, num_add, NULL);
1531                         num_add = 0;
1532                 }
1533                 kfree(add_list);
1534                 add_list = NULL;
1535
1536                 if (add_happened && (!aq_ret)) {
1537                         /* do nothing */;
1538                 } else if (add_happened && (aq_ret)) {
1539                         dev_info(&pf->pdev->dev,
1540                                  "add filter failed, err %d, aq_err %d\n",
1541                                  aq_ret, pf->hw.aq.asq_last_status);
1542                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1543                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1544                                       &vsi->state)) {
1545                                 promisc_forced_on = true;
1546                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1547                                         &vsi->state);
1548                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1549                         }
1550                 }
1551         }
1552
1553         /* check for changes in promiscuous modes */
1554         if (changed_flags & IFF_ALLMULTI) {
1555                 bool cur_multipromisc;
1556                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1557                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1558                                                                vsi->seid,
1559                                                                cur_multipromisc,
1560                                                                NULL);
1561                 if (aq_ret)
1562                         dev_info(&pf->pdev->dev,
1563                                  "set multi promisc failed, err %d, aq_err %d\n",
1564                                  aq_ret, pf->hw.aq.asq_last_status);
1565         }
1566         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1567                 bool cur_promisc;
1568                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1569                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1570                                         &vsi->state));
1571                 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(&vsi->back->hw,
1572                                                              vsi->seid,
1573                                                              cur_promisc, NULL);
1574                 if (aq_ret)
1575                         dev_info(&pf->pdev->dev,
1576                                  "set uni promisc failed, err %d, aq_err %d\n",
1577                                  aq_ret, pf->hw.aq.asq_last_status);
1578         }
1579
1580         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
1581         return 0;
1582 }
1583
1584 /**
1585  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
1586  * @pf: board private structure
1587  **/
1588 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
1589 {
1590         int v;
1591
1592         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
1593                 return;
1594         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
1595
1596         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
1597                 if (pf->vsi[v] &&
1598                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
1599                         i40e_sync_vsi_filters(pf->vsi[v]);
1600         }
1601 }
1602
1603 /**
1604  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
1605  * @netdev: network interface device structure
1606  * @new_mtu: new value for maximum frame size
1607  *
1608  * Returns 0 on success, negative on failure
1609  **/
1610 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
1611 {
1612         struct i40e_netdev_priv *np = netdev_priv(netdev);
1613         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
1614         struct i40e_vsi *vsi = np->vsi;
1615
1616         /* MTU < 68 is an error and causes problems on some kernels */
1617         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
1618                 return -EINVAL;
1619
1620         netdev_info(netdev, "changing MTU from %d to %d\n",
1621                     netdev->mtu, new_mtu);
1622         netdev->mtu = new_mtu;
1623         if (netif_running(netdev))
1624                 i40e_vsi_reinit_locked(vsi);
1625
1626         return 0;
1627 }
1628
1629 /**
1630  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
1631  * @vsi: the vsi being adjusted
1632  **/
1633 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
1634 {
1635         struct i40e_vsi_context ctxt;
1636         i40e_status ret;
1637
1638         if ((vsi->info.valid_sections &
1639              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1640             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
1641                 return;  /* already enabled */
1642
1643         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1644         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1645                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
1646
1647         ctxt.seid = vsi->seid;
1648         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1649         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1650         if (ret) {
1651                 dev_info(&vsi->back->pdev->dev,
1652                          "%s: update vsi failed, aq_err=%d\n",
1653                          __func__, vsi->back->hw.aq.asq_last_status);
1654         }
1655 }
1656
1657 /**
1658  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
1659  * @vsi: the vsi being adjusted
1660  **/
1661 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
1662 {
1663         struct i40e_vsi_context ctxt;
1664         i40e_status ret;
1665
1666         if ((vsi->info.valid_sections &
1667              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1668             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
1669              I40E_AQ_VSI_PVLAN_EMOD_MASK))
1670                 return;  /* already disabled */
1671
1672         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1673         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1674                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
1675
1676         ctxt.seid = vsi->seid;
1677         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1678         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1679         if (ret) {
1680                 dev_info(&vsi->back->pdev->dev,
1681                          "%s: update vsi failed, aq_err=%d\n",
1682                          __func__, vsi->back->hw.aq.asq_last_status);
1683         }
1684 }
1685
1686 /**
1687  * i40e_vlan_rx_register - Setup or shutdown vlan offload
1688  * @netdev: network interface to be adjusted
1689  * @features: netdev features to test if VLAN offload is enabled or not
1690  **/
1691 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
1692 {
1693         struct i40e_netdev_priv *np = netdev_priv(netdev);
1694         struct i40e_vsi *vsi = np->vsi;
1695
1696         if (features & NETIF_F_HW_VLAN_CTAG_RX)
1697                 i40e_vlan_stripping_enable(vsi);
1698         else
1699                 i40e_vlan_stripping_disable(vsi);
1700 }
1701
1702 /**
1703  * i40e_vsi_add_vlan - Add vsi membership for given vlan
1704  * @vsi: the vsi being configured
1705  * @vid: vlan id to be added (0 = untagged only , -1 = any)
1706  **/
1707 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
1708 {
1709         struct i40e_mac_filter *f, *add_f;
1710         bool is_netdev, is_vf;
1711         int ret;
1712
1713         is_vf = (vsi->type == I40E_VSI_SRIOV);
1714         is_netdev = !!(vsi->netdev);
1715
1716         if (is_netdev) {
1717                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
1718                                         is_vf, is_netdev);
1719                 if (!add_f) {
1720                         dev_info(&vsi->back->pdev->dev,
1721                                  "Could not add vlan filter %d for %pM\n",
1722                                  vid, vsi->netdev->dev_addr);
1723                         return -ENOMEM;
1724                 }
1725         }
1726
1727         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1728                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
1729                 if (!add_f) {
1730                         dev_info(&vsi->back->pdev->dev,
1731                                  "Could not add vlan filter %d for %pM\n",
1732                                  vid, f->macaddr);
1733                         return -ENOMEM;
1734                 }
1735         }
1736
1737         ret = i40e_sync_vsi_filters(vsi);
1738         if (ret) {
1739                 dev_info(&vsi->back->pdev->dev,
1740                          "Could not sync filters for vid %d\n", vid);
1741                 return ret;
1742         }
1743
1744         /* Now if we add a vlan tag, make sure to check if it is the first
1745          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
1746          * with 0, so we now accept untagged and specified tagged traffic
1747          * (and not any taged and untagged)
1748          */
1749         if (vid > 0) {
1750                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
1751                                                   I40E_VLAN_ANY,
1752                                                   is_vf, is_netdev)) {
1753                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
1754                                         I40E_VLAN_ANY, is_vf, is_netdev);
1755                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
1756                                                 is_vf, is_netdev);
1757                         if (!add_f) {
1758                                 dev_info(&vsi->back->pdev->dev,
1759                                          "Could not add filter 0 for %pM\n",
1760                                          vsi->netdev->dev_addr);
1761                                 return -ENOMEM;
1762                         }
1763                 }
1764
1765                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
1766                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
1767                                              is_vf, is_netdev)) {
1768                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
1769                                                 is_vf, is_netdev);
1770                                 add_f = i40e_add_filter(vsi, f->macaddr,
1771                                                         0, is_vf, is_netdev);
1772                                 if (!add_f) {
1773                                         dev_info(&vsi->back->pdev->dev,
1774                                                  "Could not add filter 0 for %pM\n",
1775                                                  f->macaddr);
1776                                         return -ENOMEM;
1777                                 }
1778                         }
1779                 }
1780                 ret = i40e_sync_vsi_filters(vsi);
1781         }
1782
1783         return ret;
1784 }
1785
1786 /**
1787  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
1788  * @vsi: the vsi being configured
1789  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
1790  *
1791  * Return: 0 on success or negative otherwise
1792  **/
1793 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
1794 {
1795         struct net_device *netdev = vsi->netdev;
1796         struct i40e_mac_filter *f, *add_f;
1797         bool is_vf, is_netdev;
1798         int filter_count = 0;
1799         int ret;
1800
1801         is_vf = (vsi->type == I40E_VSI_SRIOV);
1802         is_netdev = !!(netdev);
1803
1804         if (is_netdev)
1805                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
1806
1807         list_for_each_entry(f, &vsi->mac_filter_list, list)
1808                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
1809
1810         ret = i40e_sync_vsi_filters(vsi);
1811         if (ret) {
1812                 dev_info(&vsi->back->pdev->dev, "Could not sync filters\n");
1813                 return ret;
1814         }
1815
1816         /* go through all the filters for this VSI and if there is only
1817          * vid == 0 it means there are no other filters, so vid 0 must
1818          * be replaced with -1. This signifies that we should from now
1819          * on accept any traffic (with any tag present, or untagged)
1820          */
1821         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1822                 if (is_netdev) {
1823                         if (f->vlan &&
1824                             ether_addr_equal(netdev->dev_addr, f->macaddr))
1825                                 filter_count++;
1826                 }
1827
1828                 if (f->vlan)
1829                         filter_count++;
1830         }
1831
1832         if (!filter_count && is_netdev) {
1833                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
1834                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1835                                     is_vf, is_netdev);
1836                 if (!f) {
1837                         dev_info(&vsi->back->pdev->dev,
1838                                  "Could not add filter %d for %pM\n",
1839                                  I40E_VLAN_ANY, netdev->dev_addr);
1840                         return -ENOMEM;
1841                 }
1842         }
1843
1844         if (!filter_count) {
1845                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
1846                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
1847                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
1848                                             is_vf, is_netdev);
1849                         if (!add_f) {
1850                                 dev_info(&vsi->back->pdev->dev,
1851                                          "Could not add filter %d for %pM\n",
1852                                          I40E_VLAN_ANY, f->macaddr);
1853                                 return -ENOMEM;
1854                         }
1855                 }
1856         }
1857
1858         return i40e_sync_vsi_filters(vsi);
1859 }
1860
1861 /**
1862  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
1863  * @netdev: network interface to be adjusted
1864  * @vid: vlan id to be added
1865  *
1866  * net_device_ops implementation for adding vlan ids
1867  **/
1868 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
1869                                 __always_unused __be16 proto, u16 vid)
1870 {
1871         struct i40e_netdev_priv *np = netdev_priv(netdev);
1872         struct i40e_vsi *vsi = np->vsi;
1873         int ret = 0;
1874
1875         if (vid > 4095)
1876                 return -EINVAL;
1877
1878         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
1879
1880         /* If the network stack called us with vid = 0, we should
1881          * indicate to i40e_vsi_add_vlan() that we want to receive
1882          * any traffic (i.e. with any vlan tag, or untagged)
1883          */
1884         ret = i40e_vsi_add_vlan(vsi, vid ? vid : I40E_VLAN_ANY);
1885
1886         if (!ret && (vid < VLAN_N_VID))
1887                 set_bit(vid, vsi->active_vlans);
1888
1889         return ret;
1890 }
1891
1892 /**
1893  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
1894  * @netdev: network interface to be adjusted
1895  * @vid: vlan id to be removed
1896  *
1897  * net_device_ops implementation for adding vlan ids
1898  **/
1899 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
1900                                  __always_unused __be16 proto, u16 vid)
1901 {
1902         struct i40e_netdev_priv *np = netdev_priv(netdev);
1903         struct i40e_vsi *vsi = np->vsi;
1904
1905         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
1906
1907         /* return code is ignored as there is nothing a user
1908          * can do about failure to remove and a log message was
1909          * already printed from the other function
1910          */
1911         i40e_vsi_kill_vlan(vsi, vid);
1912
1913         clear_bit(vid, vsi->active_vlans);
1914
1915         return 0;
1916 }
1917
1918 /**
1919  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
1920  * @vsi: the vsi being brought back up
1921  **/
1922 static void i40e_restore_vlan(struct i40e_vsi *vsi)
1923 {
1924         u16 vid;
1925
1926         if (!vsi->netdev)
1927                 return;
1928
1929         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
1930
1931         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
1932                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
1933                                      vid);
1934 }
1935
1936 /**
1937  * i40e_vsi_add_pvid - Add pvid for the VSI
1938  * @vsi: the vsi being adjusted
1939  * @vid: the vlan id to set as a PVID
1940  **/
1941 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
1942 {
1943         struct i40e_vsi_context ctxt;
1944         i40e_status aq_ret;
1945
1946         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1947         vsi->info.pvid = cpu_to_le16(vid);
1948         vsi->info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_INSERT_PVID;
1949         vsi->info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_UNTAGGED;
1950
1951         ctxt.seid = vsi->seid;
1952         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1953         aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1954         if (aq_ret) {
1955                 dev_info(&vsi->back->pdev->dev,
1956                          "%s: update vsi failed, aq_err=%d\n",
1957                          __func__, vsi->back->hw.aq.asq_last_status);
1958                 return -ENOENT;
1959         }
1960
1961         return 0;
1962 }
1963
1964 /**
1965  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
1966  * @vsi: the vsi being adjusted
1967  *
1968  * Just use the vlan_rx_register() service to put it back to normal
1969  **/
1970 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
1971 {
1972         vsi->info.pvid = 0;
1973         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
1974 }
1975
1976 /**
1977  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
1978  * @vsi: ptr to the VSI
1979  *
1980  * If this function returns with an error, then it's possible one or
1981  * more of the rings is populated (while the rest are not).  It is the
1982  * callers duty to clean those orphaned rings.
1983  *
1984  * Return 0 on success, negative on failure
1985  **/
1986 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
1987 {
1988         int i, err = 0;
1989
1990         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
1991                 err = i40e_setup_tx_descriptors(&vsi->tx_rings[i]);
1992
1993         return err;
1994 }
1995
1996 /**
1997  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
1998  * @vsi: ptr to the VSI
1999  *
2000  * Free VSI's transmit software resources
2001  **/
2002 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2003 {
2004         int i;
2005
2006         for (i = 0; i < vsi->num_queue_pairs; i++)
2007                 if (vsi->tx_rings[i].desc)
2008                         i40e_free_tx_resources(&vsi->tx_rings[i]);
2009 }
2010
2011 /**
2012  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2013  * @vsi: ptr to the VSI
2014  *
2015  * If this function returns with an error, then it's possible one or
2016  * more of the rings is populated (while the rest are not).  It is the
2017  * callers duty to clean those orphaned rings.
2018  *
2019  * Return 0 on success, negative on failure
2020  **/
2021 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2022 {
2023         int i, err = 0;
2024
2025         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2026                 err = i40e_setup_rx_descriptors(&vsi->rx_rings[i]);
2027         return err;
2028 }
2029
2030 /**
2031  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2032  * @vsi: ptr to the VSI
2033  *
2034  * Free all receive software resources
2035  **/
2036 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2037 {
2038         int i;
2039
2040         for (i = 0; i < vsi->num_queue_pairs; i++)
2041                 if (vsi->rx_rings[i].desc)
2042                         i40e_free_rx_resources(&vsi->rx_rings[i]);
2043 }
2044
2045 /**
2046  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2047  * @ring: The Tx ring to configure
2048  *
2049  * Configure the Tx descriptor ring in the HMC context.
2050  **/
2051 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2052 {
2053         struct i40e_vsi *vsi = ring->vsi;
2054         u16 pf_q = vsi->base_queue + ring->queue_index;
2055         struct i40e_hw *hw = &vsi->back->hw;
2056         struct i40e_hmc_obj_txq tx_ctx;
2057         i40e_status err = 0;
2058         u32 qtx_ctl = 0;
2059
2060         /* some ATR related tx ring init */
2061         if (vsi->back->flags & I40E_FLAG_FDIR_ATR_ENABLED) {
2062                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2063                 ring->atr_count = 0;
2064         } else {
2065                 ring->atr_sample_rate = 0;
2066         }
2067
2068         /* initialize XPS */
2069         if (ring->q_vector && ring->netdev &&
2070             !test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2071                 netif_set_xps_queue(ring->netdev,
2072                                     &ring->q_vector->affinity_mask,
2073                                     ring->queue_index);
2074
2075         /* clear the context structure first */
2076         memset(&tx_ctx, 0, sizeof(tx_ctx));
2077
2078         tx_ctx.new_context = 1;
2079         tx_ctx.base = (ring->dma / 128);
2080         tx_ctx.qlen = ring->count;
2081         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FDIR_ENABLED |
2082                         I40E_FLAG_FDIR_ATR_ENABLED));
2083
2084         /* As part of VSI creation/update, FW allocates certain
2085          * Tx arbitration queue sets for each TC enabled for
2086          * the VSI. The FW returns the handles to these queue
2087          * sets as part of the response buffer to Add VSI,
2088          * Update VSI, etc. AQ commands. It is expected that
2089          * these queue set handles be associated with the Tx
2090          * queues by the driver as part of the TX queue context
2091          * initialization. This has to be done regardless of
2092          * DCB as by default everything is mapped to TC0.
2093          */
2094         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2095         tx_ctx.rdylist_act = 0;
2096
2097         /* clear the context in the HMC */
2098         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2099         if (err) {
2100                 dev_info(&vsi->back->pdev->dev,
2101                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2102                          ring->queue_index, pf_q, err);
2103                 return -ENOMEM;
2104         }
2105
2106         /* set the context in the HMC */
2107         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2108         if (err) {
2109                 dev_info(&vsi->back->pdev->dev,
2110                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2111                          ring->queue_index, pf_q, err);
2112                 return -ENOMEM;
2113         }
2114
2115         /* Now associate this queue with this PCI function */
2116         qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2117         qtx_ctl |= ((hw->hmc.hmc_fn_id << I40E_QTX_CTL_PF_INDX_SHIFT)
2118                                                 & I40E_QTX_CTL_PF_INDX_MASK);
2119         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2120         i40e_flush(hw);
2121
2122         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
2123
2124         /* cache tail off for easier writes later */
2125         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2126
2127         return 0;
2128 }
2129
2130 /**
2131  * i40e_configure_rx_ring - Configure a receive ring context
2132  * @ring: The Rx ring to configure
2133  *
2134  * Configure the Rx descriptor ring in the HMC context.
2135  **/
2136 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2137 {
2138         struct i40e_vsi *vsi = ring->vsi;
2139         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2140         u16 pf_q = vsi->base_queue + ring->queue_index;
2141         struct i40e_hw *hw = &vsi->back->hw;
2142         struct i40e_hmc_obj_rxq rx_ctx;
2143         i40e_status err = 0;
2144
2145         ring->state = 0;
2146
2147         /* clear the context structure first */
2148         memset(&rx_ctx, 0, sizeof(rx_ctx));
2149
2150         ring->rx_buf_len = vsi->rx_buf_len;
2151         ring->rx_hdr_len = vsi->rx_hdr_len;
2152
2153         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2154         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2155
2156         rx_ctx.base = (ring->dma / 128);
2157         rx_ctx.qlen = ring->count;
2158
2159         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2160                 set_ring_16byte_desc_enabled(ring);
2161                 rx_ctx.dsize = 0;
2162         } else {
2163                 rx_ctx.dsize = 1;
2164         }
2165
2166         rx_ctx.dtype = vsi->dtype;
2167         if (vsi->dtype) {
2168                 set_ring_ps_enabled(ring);
2169                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2170                                   I40E_RX_SPLIT_IP      |
2171                                   I40E_RX_SPLIT_TCP_UDP |
2172                                   I40E_RX_SPLIT_SCTP;
2173         } else {
2174                 rx_ctx.hsplit_0 = 0;
2175         }
2176
2177         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2178                                   (chain_len * ring->rx_buf_len));
2179         rx_ctx.tphrdesc_ena = 1;
2180         rx_ctx.tphwdesc_ena = 1;
2181         rx_ctx.tphdata_ena = 1;
2182         rx_ctx.tphhead_ena = 1;
2183         rx_ctx.lrxqthresh = 2;
2184         rx_ctx.crcstrip = 1;
2185         rx_ctx.l2tsel = 1;
2186         rx_ctx.showiv = 1;
2187
2188         /* clear the context in the HMC */
2189         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2190         if (err) {
2191                 dev_info(&vsi->back->pdev->dev,
2192                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2193                          ring->queue_index, pf_q, err);
2194                 return -ENOMEM;
2195         }
2196
2197         /* set the context in the HMC */
2198         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2199         if (err) {
2200                 dev_info(&vsi->back->pdev->dev,
2201                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2202                          ring->queue_index, pf_q, err);
2203                 return -ENOMEM;
2204         }
2205
2206         /* cache tail for quicker writes, and clear the reg before use */
2207         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2208         writel(0, ring->tail);
2209
2210         i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
2211
2212         return 0;
2213 }
2214
2215 /**
2216  * i40e_vsi_configure_tx - Configure the VSI for Tx
2217  * @vsi: VSI structure describing this set of rings and resources
2218  *
2219  * Configure the Tx VSI for operation.
2220  **/
2221 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2222 {
2223         int err = 0;
2224         u16 i;
2225
2226         for (i = 0; (i < vsi->num_queue_pairs) && (!err); i++)
2227                 err = i40e_configure_tx_ring(&vsi->tx_rings[i]);
2228
2229         return err;
2230 }
2231
2232 /**
2233  * i40e_vsi_configure_rx - Configure the VSI for Rx
2234  * @vsi: the VSI being configured
2235  *
2236  * Configure the Rx VSI for operation.
2237  **/
2238 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2239 {
2240         int err = 0;
2241         u16 i;
2242
2243         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2244                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2245                                + ETH_FCS_LEN + VLAN_HLEN;
2246         else
2247                 vsi->max_frame = I40E_RXBUFFER_2048;
2248
2249         /* figure out correct receive buffer length */
2250         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2251                                     I40E_FLAG_RX_PS_ENABLED)) {
2252         case I40E_FLAG_RX_1BUF_ENABLED:
2253                 vsi->rx_hdr_len = 0;
2254                 vsi->rx_buf_len = vsi->max_frame;
2255                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2256                 break;
2257         case I40E_FLAG_RX_PS_ENABLED:
2258                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2259                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2260                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2261                 break;
2262         default:
2263                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2264                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2265                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2266                 break;
2267         }
2268
2269         /* round up for the chip's needs */
2270         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2271                                 (1 << I40E_RXQ_CTX_HBUFF_SHIFT));
2272         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2273                                 (1 << I40E_RXQ_CTX_DBUFF_SHIFT));
2274
2275         /* set up individual rings */
2276         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2277                 err = i40e_configure_rx_ring(&vsi->rx_rings[i]);
2278
2279         return err;
2280 }
2281
2282 /**
2283  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2284  * @vsi: ptr to the VSI
2285  **/
2286 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2287 {
2288         u16 qoffset, qcount;
2289         int i, n;
2290
2291         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED))
2292                 return;
2293
2294         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2295                 if (!(vsi->tc_config.enabled_tc & (1 << n)))
2296                         continue;
2297
2298                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2299                 qcount = vsi->tc_config.tc_info[n].qcount;
2300                 for (i = qoffset; i < (qoffset + qcount); i++) {
2301                         struct i40e_ring *rx_ring = &vsi->rx_rings[i];
2302                         struct i40e_ring *tx_ring = &vsi->tx_rings[i];
2303                         rx_ring->dcb_tc = n;
2304                         tx_ring->dcb_tc = n;
2305                 }
2306         }
2307 }
2308
2309 /**
2310  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2311  * @vsi: ptr to the VSI
2312  **/
2313 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2314 {
2315         if (vsi->netdev)
2316                 i40e_set_rx_mode(vsi->netdev);
2317 }
2318
2319 /**
2320  * i40e_vsi_configure - Set up the VSI for action
2321  * @vsi: the VSI being configured
2322  **/
2323 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2324 {
2325         int err;
2326
2327         i40e_set_vsi_rx_mode(vsi);
2328         i40e_restore_vlan(vsi);
2329         i40e_vsi_config_dcb_rings(vsi);
2330         err = i40e_vsi_configure_tx(vsi);
2331         if (!err)
2332                 err = i40e_vsi_configure_rx(vsi);
2333
2334         return err;
2335 }
2336
2337 /**
2338  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2339  * @vsi: the VSI being configured
2340  **/
2341 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2342 {
2343         struct i40e_pf *pf = vsi->back;
2344         struct i40e_q_vector *q_vector;
2345         struct i40e_hw *hw = &pf->hw;
2346         u16 vector;
2347         int i, q;
2348         u32 val;
2349         u32 qp;
2350
2351         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2352          * and PFINT_LNKLSTn registers, e.g.:
2353          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2354          */
2355         qp = vsi->base_queue;
2356         vector = vsi->base_vector;
2357         q_vector = vsi->q_vectors;
2358         for (i = 0; i < vsi->num_q_vectors; i++, q_vector++, vector++) {
2359                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2360                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2361                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2362                      q_vector->rx.itr);
2363                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2364                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2365                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2366                      q_vector->tx.itr);
2367
2368                 /* Linked list for the queuepairs assigned to this vector */
2369                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2370                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2371                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2372                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2373                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2374                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2375                               (I40E_QUEUE_TYPE_TX
2376                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2377
2378                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2379
2380                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2381                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2382                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2383                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2384                               (I40E_QUEUE_TYPE_RX
2385                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2386
2387                         /* Terminate the linked list */
2388                         if (q == (q_vector->num_ringpairs - 1))
2389                                 val |= (I40E_QUEUE_END_OF_LIST
2390                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2391
2392                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2393                         qp++;
2394                 }
2395         }
2396
2397         i40e_flush(hw);
2398 }
2399
2400 /**
2401  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2402  * @hw: ptr to the hardware info
2403  **/
2404 static void i40e_enable_misc_int_causes(struct i40e_hw *hw)
2405 {
2406         u32 val;
2407
2408         /* clear things first */
2409         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2410         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2411
2412         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2413               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2414               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2415               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2416               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2417               I40E_PFINT_ICR0_ENA_STORM_DETECT_MASK  |
2418               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2419               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2420               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2421
2422         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2423
2424         /* SW_ITR_IDX = 0, but don't change INTENA */
2425         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTLN_SW_ITR_INDX_MASK |
2426                                         I40E_PFINT_DYN_CTLN_INTENA_MSK_MASK);
2427
2428         /* OTHER_ITR_IDX = 0 */
2429         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2430 }
2431
2432 /**
2433  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2434  * @vsi: the VSI being configured
2435  **/
2436 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2437 {
2438         struct i40e_q_vector *q_vector = vsi->q_vectors;
2439         struct i40e_pf *pf = vsi->back;
2440         struct i40e_hw *hw = &pf->hw;
2441         u32 val;
2442
2443         /* set the ITR configuration */
2444         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2445         q_vector->rx.latency_range = I40E_LOW_LATENCY;
2446         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
2447         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2448         q_vector->tx.latency_range = I40E_LOW_LATENCY;
2449         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
2450
2451         i40e_enable_misc_int_causes(hw);
2452
2453         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
2454         wr32(hw, I40E_PFINT_LNKLST0, 0);
2455
2456         /* Associate the queue pair to the vector and enable the q int */
2457         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
2458               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
2459               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2460
2461         wr32(hw, I40E_QINT_RQCTL(0), val);
2462
2463         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
2464               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
2465               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2466
2467         wr32(hw, I40E_QINT_TQCTL(0), val);
2468         i40e_flush(hw);
2469 }
2470
2471 /**
2472  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
2473  * @pf: board private structure
2474  **/
2475 static void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
2476 {
2477         struct i40e_hw *hw = &pf->hw;
2478         u32 val;
2479
2480         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
2481               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
2482               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
2483
2484         wr32(hw, I40E_PFINT_DYN_CTL0, val);
2485         i40e_flush(hw);
2486 }
2487
2488 /**
2489  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
2490  * @vsi: pointer to a vsi
2491  * @vector: enable a particular Hw Interrupt vector
2492  **/
2493 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
2494 {
2495         struct i40e_pf *pf = vsi->back;
2496         struct i40e_hw *hw = &pf->hw;
2497         u32 val;
2498
2499         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
2500               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
2501               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2502         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2503         i40e_flush(hw);
2504 }
2505
2506 /**
2507  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
2508  * @irq: interrupt number
2509  * @data: pointer to a q_vector
2510  **/
2511 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
2512 {
2513         struct i40e_q_vector *q_vector = data;
2514
2515         if (!q_vector->tx.ring[0] && !q_vector->rx.ring[0])
2516                 return IRQ_HANDLED;
2517
2518         napi_schedule(&q_vector->napi);
2519
2520         return IRQ_HANDLED;
2521 }
2522
2523 /**
2524  * i40e_fdir_clean_rings - Interrupt Handler for FDIR rings
2525  * @irq: interrupt number
2526  * @data: pointer to a q_vector
2527  **/
2528 static irqreturn_t i40e_fdir_clean_rings(int irq, void *data)
2529 {
2530         struct i40e_q_vector *q_vector = data;
2531
2532         if (!q_vector->tx.ring[0] && !q_vector->rx.ring[0])
2533                 return IRQ_HANDLED;
2534
2535         pr_info("fdir ring cleaning needed\n");
2536
2537         return IRQ_HANDLED;
2538 }
2539
2540 /**
2541  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
2542  * @vsi: the VSI being configured
2543  * @basename: name for the vector
2544  *
2545  * Allocates MSI-X vectors and requests interrupts from the kernel.
2546  **/
2547 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
2548 {
2549         int q_vectors = vsi->num_q_vectors;
2550         struct i40e_pf *pf = vsi->back;
2551         int base = vsi->base_vector;
2552         int rx_int_idx = 0;
2553         int tx_int_idx = 0;
2554         int vector, err;
2555
2556         for (vector = 0; vector < q_vectors; vector++) {
2557                 struct i40e_q_vector *q_vector = &(vsi->q_vectors[vector]);
2558
2559                 if (q_vector->tx.ring[0] && q_vector->rx.ring[0]) {
2560                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2561                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
2562                         tx_int_idx++;
2563                 } else if (q_vector->rx.ring[0]) {
2564                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2565                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
2566                 } else if (q_vector->tx.ring[0]) {
2567                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2568                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
2569                 } else {
2570                         /* skip this unused q_vector */
2571                         continue;
2572                 }
2573                 err = request_irq(pf->msix_entries[base + vector].vector,
2574                                   vsi->irq_handler,
2575                                   0,
2576                                   q_vector->name,
2577                                   q_vector);
2578                 if (err) {
2579                         dev_info(&pf->pdev->dev,
2580                                  "%s: request_irq failed, error: %d\n",
2581                                  __func__, err);
2582                         goto free_queue_irqs;
2583                 }
2584                 /* assign the mask for this irq */
2585                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2586                                       &q_vector->affinity_mask);
2587         }
2588
2589         return 0;
2590
2591 free_queue_irqs:
2592         while (vector) {
2593                 vector--;
2594                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2595                                       NULL);
2596                 free_irq(pf->msix_entries[base + vector].vector,
2597                          &(vsi->q_vectors[vector]));
2598         }
2599         return err;
2600 }
2601
2602 /**
2603  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
2604  * @vsi: the VSI being un-configured
2605  **/
2606 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
2607 {
2608         struct i40e_pf *pf = vsi->back;
2609         struct i40e_hw *hw = &pf->hw;
2610         int base = vsi->base_vector;
2611         int i;
2612
2613         for (i = 0; i < vsi->num_queue_pairs; i++) {
2614                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i].reg_idx), 0);
2615                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i].reg_idx), 0);
2616         }
2617
2618         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
2619                 for (i = vsi->base_vector;
2620                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
2621                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
2622
2623                 i40e_flush(hw);
2624                 for (i = 0; i < vsi->num_q_vectors; i++)
2625                         synchronize_irq(pf->msix_entries[i + base].vector);
2626         } else {
2627                 /* Legacy and MSI mode - this stops all interrupt handling */
2628                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
2629                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
2630                 i40e_flush(hw);
2631                 synchronize_irq(pf->pdev->irq);
2632         }
2633 }
2634
2635 /**
2636  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
2637  * @vsi: the VSI being configured
2638  **/
2639 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
2640 {
2641         struct i40e_pf *pf = vsi->back;
2642         int i;
2643
2644         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
2645                 for (i = vsi->base_vector;
2646                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
2647                         i40e_irq_dynamic_enable(vsi, i);
2648         } else {
2649                 i40e_irq_dynamic_enable_icr0(pf);
2650         }
2651
2652         return 0;
2653 }
2654
2655 /**
2656  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
2657  * @pf: board private structure
2658  **/
2659 static void i40e_stop_misc_vector(struct i40e_pf *pf)
2660 {
2661         /* Disable ICR 0 */
2662         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
2663         i40e_flush(&pf->hw);
2664 }
2665
2666 /**
2667  * i40e_intr - MSI/Legacy and non-queue interrupt handler
2668  * @irq: interrupt number
2669  * @data: pointer to a q_vector
2670  *
2671  * This is the handler used for all MSI/Legacy interrupts, and deals
2672  * with both queue and non-queue interrupts.  This is also used in
2673  * MSIX mode to handle the non-queue interrupts.
2674  **/
2675 static irqreturn_t i40e_intr(int irq, void *data)
2676 {
2677         struct i40e_pf *pf = (struct i40e_pf *)data;
2678         struct i40e_hw *hw = &pf->hw;
2679         u32 icr0, icr0_remaining;
2680         u32 val, ena_mask;
2681
2682         icr0 = rd32(hw, I40E_PFINT_ICR0);
2683
2684         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
2685         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
2686                 return IRQ_NONE;
2687
2688         val = rd32(hw, I40E_PFINT_DYN_CTL0);
2689         val = val | I40E_PFINT_DYN_CTL0_CLEARPBA_MASK;
2690         wr32(hw, I40E_PFINT_DYN_CTL0, val);
2691
2692         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
2693
2694         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
2695         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
2696
2697                 /* temporarily disable queue cause for NAPI processing */
2698                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
2699                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
2700                 wr32(hw, I40E_QINT_RQCTL(0), qval);
2701
2702                 qval = rd32(hw, I40E_QINT_TQCTL(0));
2703                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
2704                 wr32(hw, I40E_QINT_TQCTL(0), qval);
2705                 i40e_flush(hw);
2706
2707                 if (!test_bit(__I40E_DOWN, &pf->state))
2708                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0].napi);
2709         }
2710
2711         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
2712                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2713                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
2714         }
2715
2716         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
2717                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
2718                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
2719         }
2720
2721         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
2722                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
2723                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
2724         }
2725
2726         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
2727                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
2728                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
2729                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
2730                 val = rd32(hw, I40E_GLGEN_RSTAT);
2731                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
2732                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
2733                 if (val & I40E_RESET_CORER)
2734                         pf->corer_count++;
2735                 else if (val & I40E_RESET_GLOBR)
2736                         pf->globr_count++;
2737                 else if (val & I40E_RESET_EMPR)
2738                         pf->empr_count++;
2739         }
2740
2741         /* If a critical error is pending we have no choice but to reset the
2742          * device.
2743          * Report and mask out any remaining unexpected interrupts.
2744          */
2745         icr0_remaining = icr0 & ena_mask;
2746         if (icr0_remaining) {
2747                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
2748                          icr0_remaining);
2749                 if ((icr0_remaining & I40E_PFINT_ICR0_HMC_ERR_MASK) ||
2750                     (icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
2751                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
2752                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK) ||
2753                     (icr0_remaining & I40E_PFINT_ICR0_MAL_DETECT_MASK)) {
2754                         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
2755                                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
2756                         } else {
2757                                 dev_info(&pf->pdev->dev, "device will be reset\n");
2758                                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
2759                                 i40e_service_event_schedule(pf);
2760                         }
2761                 }
2762                 ena_mask &= ~icr0_remaining;
2763         }
2764
2765         /* re-enable interrupt causes */
2766         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
2767         i40e_flush(hw);
2768         if (!test_bit(__I40E_DOWN, &pf->state)) {
2769                 i40e_service_event_schedule(pf);
2770                 i40e_irq_dynamic_enable_icr0(pf);
2771         }
2772
2773         return IRQ_HANDLED;
2774 }
2775
2776 /**
2777  * i40e_map_vector_to_rxq - Assigns the Rx queue to the vector
2778  * @vsi: the VSI being configured
2779  * @v_idx: vector index
2780  * @r_idx: rx queue index
2781  **/
2782 static void map_vector_to_rxq(struct i40e_vsi *vsi, int v_idx, int r_idx)
2783 {
2784         struct i40e_q_vector *q_vector = &(vsi->q_vectors[v_idx]);
2785         struct i40e_ring *rx_ring = &(vsi->rx_rings[r_idx]);
2786
2787         rx_ring->q_vector = q_vector;
2788         q_vector->rx.ring[q_vector->rx.count] = rx_ring;
2789         q_vector->rx.count++;
2790         q_vector->rx.latency_range = I40E_LOW_LATENCY;
2791         q_vector->vsi = vsi;
2792 }
2793
2794 /**
2795  * i40e_map_vector_to_txq - Assigns the Tx queue to the vector
2796  * @vsi: the VSI being configured
2797  * @v_idx: vector index
2798  * @t_idx: tx queue index
2799  **/
2800 static void map_vector_to_txq(struct i40e_vsi *vsi, int v_idx, int t_idx)
2801 {
2802         struct i40e_q_vector *q_vector = &(vsi->q_vectors[v_idx]);
2803         struct i40e_ring *tx_ring = &(vsi->tx_rings[t_idx]);
2804
2805         tx_ring->q_vector = q_vector;
2806         q_vector->tx.ring[q_vector->tx.count] = tx_ring;
2807         q_vector->tx.count++;
2808         q_vector->tx.latency_range = I40E_LOW_LATENCY;
2809         q_vector->num_ringpairs++;
2810         q_vector->vsi = vsi;
2811 }
2812
2813 /**
2814  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
2815  * @vsi: the VSI being configured
2816  *
2817  * This function maps descriptor rings to the queue-specific vectors
2818  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
2819  * one vector per queue pair, but on a constrained vector budget, we
2820  * group the queue pairs as "efficiently" as possible.
2821  **/
2822 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
2823 {
2824         int qp_remaining = vsi->num_queue_pairs;
2825         int q_vectors = vsi->num_q_vectors;
2826         int qp_per_vector;
2827         int v_start = 0;
2828         int qp_idx = 0;
2829
2830         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
2831          * group them so there are multiple queues per vector.
2832          */
2833         for (; v_start < q_vectors && qp_remaining; v_start++) {
2834                 qp_per_vector = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
2835                 for (; qp_per_vector;
2836                      qp_per_vector--, qp_idx++, qp_remaining--) {
2837                         map_vector_to_rxq(vsi, v_start, qp_idx);
2838                         map_vector_to_txq(vsi, v_start, qp_idx);
2839                 }
2840         }
2841 }
2842
2843 /**
2844  * i40e_vsi_request_irq - Request IRQ from the OS
2845  * @vsi: the VSI being configured
2846  * @basename: name for the vector
2847  **/
2848 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
2849 {
2850         struct i40e_pf *pf = vsi->back;
2851         int err;
2852
2853         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
2854                 err = i40e_vsi_request_irq_msix(vsi, basename);
2855         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
2856                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
2857                                   pf->misc_int_name, pf);
2858         else
2859                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
2860                                   pf->misc_int_name, pf);
2861
2862         if (err)
2863                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
2864
2865         return err;
2866 }
2867
2868 #ifdef CONFIG_NET_POLL_CONTROLLER
2869 /**
2870  * i40e_netpoll - A Polling 'interrupt'handler
2871  * @netdev: network interface device structure
2872  *
2873  * This is used by netconsole to send skbs without having to re-enable
2874  * interrupts.  It's not called while the normal interrupt routine is executing.
2875  **/
2876 static void i40e_netpoll(struct net_device *netdev)
2877 {
2878         struct i40e_netdev_priv *np = netdev_priv(netdev);
2879         struct i40e_vsi *vsi = np->vsi;
2880         struct i40e_pf *pf = vsi->back;
2881         int i;
2882
2883         /* if interface is down do nothing */
2884         if (test_bit(__I40E_DOWN, &vsi->state))
2885                 return;
2886
2887         pf->flags |= I40E_FLAG_IN_NETPOLL;
2888         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
2889                 for (i = 0; i < vsi->num_q_vectors; i++)
2890                         i40e_msix_clean_rings(0, &vsi->q_vectors[i]);
2891         } else {
2892                 i40e_intr(pf->pdev->irq, netdev);
2893         }
2894         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
2895 }
2896 #endif
2897
2898 /**
2899  * i40e_vsi_control_tx - Start or stop a VSI's rings
2900  * @vsi: the VSI being configured
2901  * @enable: start or stop the rings
2902  **/
2903 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
2904 {
2905         struct i40e_pf *pf = vsi->back;
2906         struct i40e_hw *hw = &pf->hw;
2907         int i, j, pf_q;
2908         u32 tx_reg;
2909
2910         pf_q = vsi->base_queue;
2911         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
2912                 j = 1000;
2913                 do {
2914                         usleep_range(1000, 2000);
2915                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
2916                 } while (j-- && ((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT)
2917                                ^ (tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT)) & 1);
2918
2919                 if (enable) {
2920                         /* is STAT set ? */
2921                         if ((tx_reg & I40E_QTX_ENA_QENA_STAT_MASK)) {
2922                                 dev_info(&pf->pdev->dev,
2923                                          "Tx %d already enabled\n", i);
2924                                 continue;
2925                         }
2926                 } else {
2927                         /* is !STAT set ? */
2928                         if (!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK)) {
2929                                 dev_info(&pf->pdev->dev,
2930                                          "Tx %d already disabled\n", i);
2931                                 continue;
2932                         }
2933                 }
2934
2935                 /* turn on/off the queue */
2936                 if (enable)
2937                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK |
2938                                   I40E_QTX_ENA_QENA_STAT_MASK;
2939                 else
2940                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
2941
2942                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
2943
2944                 /* wait for the change to finish */
2945                 for (j = 0; j < 10; j++) {
2946                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
2947                         if (enable) {
2948                                 if ((tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
2949                                         break;
2950                         } else {
2951                                 if (!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
2952                                         break;
2953                         }
2954
2955                         udelay(10);
2956                 }
2957                 if (j >= 10) {
2958                         dev_info(&pf->pdev->dev, "Tx ring %d %sable timeout\n",
2959                                  pf_q, (enable ? "en" : "dis"));
2960                         return -ETIMEDOUT;
2961                 }
2962         }
2963
2964         return 0;
2965 }
2966
2967 /**
2968  * i40e_vsi_control_rx - Start or stop a VSI's rings
2969  * @vsi: the VSI being configured
2970  * @enable: start or stop the rings
2971  **/
2972 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
2973 {
2974         struct i40e_pf *pf = vsi->back;
2975         struct i40e_hw *hw = &pf->hw;
2976         int i, j, pf_q;
2977         u32 rx_reg;
2978
2979         pf_q = vsi->base_queue;
2980         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
2981                 j = 1000;
2982                 do {
2983                         usleep_range(1000, 2000);
2984                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
2985                 } while (j-- && ((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT)
2986                                ^ (rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT)) & 1);
2987
2988                 if (enable) {
2989                         /* is STAT set ? */
2990                         if ((rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
2991                                 continue;
2992                 } else {
2993                         /* is !STAT set ? */
2994                         if (!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
2995                                 continue;
2996                 }
2997
2998                 /* turn on/off the queue */
2999                 if (enable)
3000                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK |
3001                                   I40E_QRX_ENA_QENA_STAT_MASK;
3002                 else
3003                         rx_reg &= ~(I40E_QRX_ENA_QENA_REQ_MASK |
3004                                   I40E_QRX_ENA_QENA_STAT_MASK);
3005                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3006
3007                 /* wait for the change to finish */
3008                 for (j = 0; j < 10; j++) {
3009                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3010
3011                         if (enable) {
3012                                 if ((rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3013                                         break;
3014                         } else {
3015                                 if (!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3016                                         break;
3017                         }
3018
3019                         udelay(10);
3020                 }
3021                 if (j >= 10) {
3022                         dev_info(&pf->pdev->dev, "Rx ring %d %sable timeout\n",
3023                                  pf_q, (enable ? "en" : "dis"));
3024                         return -ETIMEDOUT;
3025                 }
3026         }
3027
3028         return 0;
3029 }
3030
3031 /**
3032  * i40e_vsi_control_rings - Start or stop a VSI's rings
3033  * @vsi: the VSI being configured
3034  * @enable: start or stop the rings
3035  **/
3036 static int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3037 {
3038         int ret;
3039
3040         /* do rx first for enable and last for disable */
3041         if (request) {
3042                 ret = i40e_vsi_control_rx(vsi, request);
3043                 if (ret)
3044                         return ret;
3045                 ret = i40e_vsi_control_tx(vsi, request);
3046         } else {
3047                 ret = i40e_vsi_control_tx(vsi, request);
3048                 if (ret)
3049                         return ret;
3050                 ret = i40e_vsi_control_rx(vsi, request);
3051         }
3052
3053         return ret;
3054 }
3055
3056 /**
3057  * i40e_vsi_free_irq - Free the irq association with the OS
3058  * @vsi: the VSI being configured
3059  **/
3060 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3061 {
3062         struct i40e_pf *pf = vsi->back;
3063         struct i40e_hw *hw = &pf->hw;
3064         int base = vsi->base_vector;
3065         u32 val, qp;
3066         int i;
3067
3068         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3069                 if (!vsi->q_vectors)
3070                         return;
3071
3072                 for (i = 0; i < vsi->num_q_vectors; i++) {
3073                         u16 vector = i + base;
3074
3075                         /* free only the irqs that were actually requested */
3076                         if (vsi->q_vectors[i].num_ringpairs == 0)
3077                                 continue;
3078
3079                         /* clear the affinity_mask in the IRQ descriptor */
3080                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3081                                               NULL);
3082                         free_irq(pf->msix_entries[vector].vector,
3083                                  &vsi->q_vectors[i]);
3084
3085                         /* Tear down the interrupt queue link list
3086                          *
3087                          * We know that they come in pairs and always
3088                          * the Rx first, then the Tx.  To clear the
3089                          * link list, stick the EOL value into the
3090                          * next_q field of the registers.
3091                          */
3092                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3093                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3094                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3095                         val |= I40E_QUEUE_END_OF_LIST
3096                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3097                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3098
3099                         while (qp != I40E_QUEUE_END_OF_LIST) {
3100                                 u32 next;
3101
3102                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3103
3104                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3105                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3106                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3107                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3108
3109                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3110                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3111
3112                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3113
3114                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3115
3116                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3117                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3118
3119                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3120                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3121                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3122                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3123
3124                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3125                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3126
3127                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3128                                 qp = next;
3129                         }
3130                 }
3131         } else {
3132                 free_irq(pf->pdev->irq, pf);
3133
3134                 val = rd32(hw, I40E_PFINT_LNKLST0);
3135                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3136                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3137                 val |= I40E_QUEUE_END_OF_LIST
3138                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3139                 wr32(hw, I40E_PFINT_LNKLST0, val);
3140
3141                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3142                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3143                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3144                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3145                          I40E_QINT_RQCTL_INTEVENT_MASK);
3146
3147                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3148                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3149
3150                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3151
3152                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3153
3154                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3155                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3156                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3157                          I40E_QINT_TQCTL_INTEVENT_MASK);
3158
3159                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3160                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3161
3162                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3163         }
3164 }
3165
3166 /**
3167  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3168  * @vsi: the VSI being un-configured
3169  *
3170  * This frees the memory allocated to the q_vectors and
3171  * deletes references to the NAPI struct.
3172  **/
3173 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3174 {
3175         int v_idx;
3176
3177         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++) {
3178                 struct i40e_q_vector *q_vector = &vsi->q_vectors[v_idx];
3179                 int r_idx;
3180
3181                 if (!q_vector)
3182                         continue;
3183
3184                 /* disassociate q_vector from rings */
3185                 for (r_idx = 0; r_idx < q_vector->tx.count; r_idx++)
3186                         q_vector->tx.ring[r_idx]->q_vector = NULL;
3187                 for (r_idx = 0; r_idx < q_vector->rx.count; r_idx++)
3188                         q_vector->rx.ring[r_idx]->q_vector = NULL;
3189
3190                 /* only VSI w/ an associated netdev is set up w/ NAPI */
3191                 if (vsi->netdev)
3192                         netif_napi_del(&q_vector->napi);
3193         }
3194         kfree(vsi->q_vectors);
3195 }
3196
3197 /**
3198  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3199  * @pf: board private structure
3200  **/
3201 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3202 {
3203         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3204         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3205                 pci_disable_msix(pf->pdev);
3206                 kfree(pf->msix_entries);
3207                 pf->msix_entries = NULL;
3208         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3209                 pci_disable_msi(pf->pdev);
3210         }
3211         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3212 }
3213
3214 /**
3215  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3216  * @pf: board private structure
3217  *
3218  * We go through and clear interrupt specific resources and reset the structure
3219  * to pre-load conditions
3220  **/
3221 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3222 {
3223         int i;
3224
3225         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3226         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
3227                 if (pf->vsi[i])
3228                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3229         i40e_reset_interrupt_capability(pf);
3230 }
3231
3232 /**
3233  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3234  * @vsi: the VSI being configured
3235  **/
3236 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3237 {
3238         int q_idx;
3239
3240         if (!vsi->netdev)
3241                 return;
3242
3243         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3244                 napi_enable(&vsi->q_vectors[q_idx].napi);
3245 }
3246
3247 /**
3248  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3249  * @vsi: the VSI being configured
3250  **/
3251 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
3252 {
3253         int q_idx;
3254
3255         if (!vsi->netdev)
3256                 return;
3257
3258         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3259                 napi_disable(&vsi->q_vectors[q_idx].napi);
3260 }
3261
3262 /**
3263  * i40e_quiesce_vsi - Pause a given VSI
3264  * @vsi: the VSI being paused
3265  **/
3266 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
3267 {
3268         if (test_bit(__I40E_DOWN, &vsi->state))
3269                 return;
3270
3271         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
3272         if (vsi->netdev && netif_running(vsi->netdev)) {
3273                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
3274         } else {
3275                 set_bit(__I40E_DOWN, &vsi->state);
3276                 i40e_down(vsi);
3277         }
3278 }
3279
3280 /**
3281  * i40e_unquiesce_vsi - Resume a given VSI
3282  * @vsi: the VSI being resumed
3283  **/
3284 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
3285 {
3286         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
3287                 return;
3288
3289         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
3290         if (vsi->netdev && netif_running(vsi->netdev))
3291                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
3292         else
3293                 i40e_up(vsi);   /* this clears the DOWN bit */
3294 }
3295
3296 /**
3297  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
3298  * @pf: the PF
3299  **/
3300 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
3301 {
3302         int v;
3303
3304         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
3305                 if (pf->vsi[v])
3306                         i40e_quiesce_vsi(pf->vsi[v]);
3307         }
3308 }
3309
3310 /**
3311  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
3312  * @pf: the PF
3313  **/
3314 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
3315 {
3316         int v;
3317
3318         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
3319                 if (pf->vsi[v])
3320                         i40e_unquiesce_vsi(pf->vsi[v]);
3321         }
3322 }
3323
3324 /**
3325  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
3326  * @dcbcfg: the corresponding DCBx configuration structure
3327  *
3328  * Return the number of TCs from given DCBx configuration
3329  **/
3330 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
3331 {
3332         u8 num_tc = 0;
3333         int i;
3334
3335         /* Scan the ETS Config Priority Table to find
3336          * traffic class enabled for a given priority
3337          * and use the traffic class index to get the
3338          * number of traffic classes enabled
3339          */
3340         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
3341                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
3342                         num_tc = dcbcfg->etscfg.prioritytable[i];
3343         }
3344
3345         /* Traffic class index starts from zero so
3346          * increment to return the actual count
3347          */
3348         return num_tc + 1;
3349 }
3350
3351 /**
3352  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
3353  * @dcbcfg: the corresponding DCBx configuration structure
3354  *
3355  * Query the current DCB configuration and return the number of
3356  * traffic classes enabled from the given DCBX config
3357  **/
3358 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
3359 {
3360         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
3361         u8 enabled_tc = 1;
3362         u8 i;
3363
3364         for (i = 0; i < num_tc; i++)
3365                 enabled_tc |= 1 << i;
3366
3367         return enabled_tc;
3368 }
3369
3370 /**
3371  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
3372  * @pf: PF being queried
3373  *
3374  * Return number of traffic classes enabled for the given PF
3375  **/
3376 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
3377 {
3378         struct i40e_hw *hw = &pf->hw;
3379         u8 i, enabled_tc;
3380         u8 num_tc = 0;
3381         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
3382
3383         /* If DCB is not enabled then always in single TC */
3384         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3385                 return 1;
3386
3387         /* MFP mode return count of enabled TCs for this PF */
3388         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3389                 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3390                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3391                         if (enabled_tc & (1 << i))
3392                                 num_tc++;
3393                 }
3394                 return num_tc;
3395         }
3396
3397         /* SFP mode will be enabled for all TCs on port */
3398         return i40e_dcb_get_num_tc(dcbcfg);
3399 }
3400
3401 /**
3402  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
3403  * @pf: PF being queried
3404  *
3405  * Return a bitmap for first enabled traffic class for this PF.
3406  **/
3407 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
3408 {
3409         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3410         u8 i = 0;
3411
3412         if (!enabled_tc)
3413                 return 0x1; /* TC0 */
3414
3415         /* Find the first enabled TC */
3416         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3417                 if (enabled_tc & (1 << i))
3418                         break;
3419         }
3420
3421         return 1 << i;
3422 }
3423
3424 /**
3425  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
3426  * @pf: PF being queried
3427  *
3428  * Return a bitmap for enabled traffic classes for this PF.
3429  **/
3430 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
3431 {
3432         /* If DCB is not enabled for this PF then just return default TC */
3433         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3434                 return i40e_pf_get_default_tc(pf);
3435
3436         /* MFP mode will have enabled TCs set by FW */
3437         if (pf->flags & I40E_FLAG_MFP_ENABLED)
3438                 return pf->hw.func_caps.enabled_tcmap;
3439
3440         /* SFP mode we want PF to be enabled for all TCs */
3441         return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
3442 }
3443
3444 /**
3445  * i40e_vsi_get_bw_info - Query VSI BW Information
3446  * @vsi: the VSI being queried
3447  *
3448  * Returns 0 on success, negative value on failure
3449  **/
3450 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
3451 {
3452         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
3453         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
3454         struct i40e_pf *pf = vsi->back;
3455         struct i40e_hw *hw = &pf->hw;
3456         i40e_status aq_ret;
3457         u32 tc_bw_max;
3458         int i;
3459
3460         /* Get the VSI level BW configuration */
3461         aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
3462         if (aq_ret) {
3463                 dev_info(&pf->pdev->dev,
3464                          "couldn't get pf vsi bw config, err %d, aq_err %d\n",
3465                          aq_ret, pf->hw.aq.asq_last_status);
3466                 return -EINVAL;
3467         }
3468
3469         /* Get the VSI level BW configuration per TC */
3470         aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
3471                                                   NULL);
3472         if (aq_ret) {
3473                 dev_info(&pf->pdev->dev,
3474                          "couldn't get pf vsi ets bw config, err %d, aq_err %d\n",
3475                          aq_ret, pf->hw.aq.asq_last_status);
3476                 return -EINVAL;
3477         }
3478
3479         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
3480                 dev_info(&pf->pdev->dev,
3481                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
3482                          bw_config.tc_valid_bits,
3483                          bw_ets_config.tc_valid_bits);
3484                 /* Still continuing */
3485         }
3486
3487         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
3488         vsi->bw_max_quanta = bw_config.max_bw;
3489         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
3490                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
3491         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3492                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
3493                 vsi->bw_ets_limit_credits[i] =
3494                                         le16_to_cpu(bw_ets_config.credits[i]);
3495                 /* 3 bits out of 4 for each TC */
3496                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
3497         }
3498
3499         return 0;
3500 }
3501
3502 /**
3503  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
3504  * @vsi: the VSI being configured
3505  * @enabled_tc: TC bitmap
3506  * @bw_credits: BW shared credits per TC
3507  *
3508  * Returns 0 on success, negative value on failure
3509  **/
3510 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
3511                                        u8 *bw_share)
3512 {
3513         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
3514         i40e_status aq_ret;
3515         int i;
3516
3517         bw_data.tc_valid_bits = enabled_tc;
3518         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
3519                 bw_data.tc_bw_credits[i] = bw_share[i];
3520
3521         aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
3522                                           NULL);
3523         if (aq_ret) {
3524                 dev_info(&vsi->back->pdev->dev,
3525                          "%s: AQ command Config VSI BW allocation per TC failed = %d\n",
3526                          __func__, vsi->back->hw.aq.asq_last_status);
3527                 return -EINVAL;
3528         }
3529
3530         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
3531                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
3532
3533         return 0;
3534 }
3535
3536 /**
3537  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
3538  * @vsi: the VSI being configured
3539  * @enabled_tc: TC map to be enabled
3540  *
3541  **/
3542 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
3543 {
3544         struct net_device *netdev = vsi->netdev;
3545         struct i40e_pf *pf = vsi->back;
3546         struct i40e_hw *hw = &pf->hw;
3547         u8 netdev_tc = 0;
3548         int i;
3549         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
3550
3551         if (!netdev)
3552                 return;
3553
3554         if (!enabled_tc) {
3555                 netdev_reset_tc(netdev);
3556                 return;
3557         }
3558
3559         /* Set up actual enabled TCs on the VSI */
3560         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
3561                 return;
3562
3563         /* set per TC queues for the VSI */
3564         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3565                 /* Only set TC queues for enabled tcs
3566                  *
3567                  * e.g. For a VSI that has TC0 and TC3 enabled the
3568                  * enabled_tc bitmap would be 0x00001001; the driver
3569                  * will set the numtc for netdev as 2 that will be
3570                  * referenced by the netdev layer as TC 0 and 1.
3571                  */
3572                 if (vsi->tc_config.enabled_tc & (1 << i))
3573                         netdev_set_tc_queue(netdev,
3574                                         vsi->tc_config.tc_info[i].netdev_tc,
3575                                         vsi->tc_config.tc_info[i].qcount,
3576                                         vsi->tc_config.tc_info[i].qoffset);
3577         }
3578
3579         /* Assign UP2TC map for the VSI */
3580         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
3581                 /* Get the actual TC# for the UP */
3582                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
3583                 /* Get the mapped netdev TC# for the UP */
3584                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
3585                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
3586         }
3587 }
3588
3589 /**
3590  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
3591  * @vsi: the VSI being configured
3592  * @ctxt: the ctxt buffer returned from AQ VSI update param command
3593  **/
3594 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
3595                                       struct i40e_vsi_context *ctxt)
3596 {
3597         /* copy just the sections touched not the entire info
3598          * since not all sections are valid as returned by
3599          * update vsi params
3600          */
3601         vsi->info.mapping_flags = ctxt->info.mapping_flags;
3602         memcpy(&vsi->info.queue_mapping,
3603                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
3604         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
3605                sizeof(vsi->info.tc_mapping));
3606 }
3607
3608 /**
3609  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
3610  * @vsi: VSI to be configured
3611  * @enabled_tc: TC bitmap
3612  *
3613  * This configures a particular VSI for TCs that are mapped to the
3614  * given TC bitmap. It uses default bandwidth share for TCs across
3615  * VSIs to configure TC for a particular VSI.
3616  *
3617  * NOTE:
3618  * It is expected that the VSI queues have been quisced before calling
3619  * this function.
3620  **/
3621 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
3622 {
3623         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
3624         struct i40e_vsi_context ctxt;
3625         int ret = 0;
3626         int i;
3627
3628         /* Check if enabled_tc is same as existing or new TCs */
3629         if (vsi->tc_config.enabled_tc == enabled_tc)
3630                 return ret;
3631
3632         /* Enable ETS TCs with equal BW Share for now across all VSIs */
3633         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3634                 if (enabled_tc & (1 << i))
3635                         bw_share[i] = 1;
3636         }
3637
3638         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
3639         if (ret) {
3640                 dev_info(&vsi->back->pdev->dev,
3641                          "Failed configuring TC map %d for VSI %d\n",
3642                          enabled_tc, vsi->seid);
3643                 goto out;
3644         }
3645
3646         /* Update Queue Pairs Mapping for currently enabled UPs */
3647         ctxt.seid = vsi->seid;
3648         ctxt.pf_num = vsi->back->hw.pf_id;
3649         ctxt.vf_num = 0;
3650         ctxt.uplink_seid = vsi->uplink_seid;
3651         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
3652         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
3653
3654         /* Update the VSI after updating the VSI queue-mapping information */
3655         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
3656         if (ret) {
3657                 dev_info(&vsi->back->pdev->dev,
3658                          "update vsi failed, aq_err=%d\n",
3659                          vsi->back->hw.aq.asq_last_status);
3660                 goto out;
3661         }
3662         /* update the local VSI info with updated queue map */
3663         i40e_vsi_update_queue_map(vsi, &ctxt);
3664         vsi->info.valid_sections = 0;
3665
3666         /* Update current VSI BW information */
3667         ret = i40e_vsi_get_bw_info(vsi);
3668         if (ret) {
3669                 dev_info(&vsi->back->pdev->dev,
3670                          "Failed updating vsi bw info, aq_err=%d\n",
3671                          vsi->back->hw.aq.asq_last_status);
3672                 goto out;
3673         }
3674
3675         /* Update the netdev TC setup */
3676         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
3677 out:
3678         return ret;
3679 }
3680
3681 /**
3682  * i40e_up_complete - Finish the last steps of bringing up a connection
3683  * @vsi: the VSI being configured
3684  **/
3685 static int i40e_up_complete(struct i40e_vsi *vsi)
3686 {
3687         struct i40e_pf *pf = vsi->back;
3688         int err;
3689
3690         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3691                 i40e_vsi_configure_msix(vsi);
3692         else
3693                 i40e_configure_msi_and_legacy(vsi);
3694
3695         /* start rings */
3696         err = i40e_vsi_control_rings(vsi, true);
3697         if (err)
3698                 return err;
3699
3700         clear_bit(__I40E_DOWN, &vsi->state);
3701         i40e_napi_enable_all(vsi);
3702         i40e_vsi_enable_irq(vsi);
3703
3704         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
3705             (vsi->netdev)) {
3706                 netif_tx_start_all_queues(vsi->netdev);
3707                 netif_carrier_on(vsi->netdev);
3708         }
3709         i40e_service_event_schedule(pf);
3710
3711         return 0;
3712 }
3713
3714 /**
3715  * i40e_vsi_reinit_locked - Reset the VSI
3716  * @vsi: the VSI being configured
3717  *
3718  * Rebuild the ring structs after some configuration
3719  * has changed, e.g. MTU size.
3720  **/
3721 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
3722 {
3723         struct i40e_pf *pf = vsi->back;
3724
3725         WARN_ON(in_interrupt());
3726         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
3727                 usleep_range(1000, 2000);
3728         i40e_down(vsi);
3729
3730         /* Give a VF some time to respond to the reset.  The
3731          * two second wait is based upon the watchdog cycle in
3732          * the VF driver.
3733          */
3734         if (vsi->type == I40E_VSI_SRIOV)
3735                 msleep(2000);
3736         i40e_up(vsi);
3737         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
3738 }
3739
3740 /**
3741  * i40e_up - Bring the connection back up after being down
3742  * @vsi: the VSI being configured
3743  **/
3744 int i40e_up(struct i40e_vsi *vsi)
3745 {
3746         int err;
3747
3748         err = i40e_vsi_configure(vsi);
3749         if (!err)
3750                 err = i40e_up_complete(vsi);
3751
3752         return err;
3753 }
3754
3755 /**
3756  * i40e_down - Shutdown the connection processing
3757  * @vsi: the VSI being stopped
3758  **/
3759 void i40e_down(struct i40e_vsi *vsi)
3760 {
3761         int i;
3762
3763         /* It is assumed that the caller of this function
3764          * sets the vsi->state __I40E_DOWN bit.
3765          */
3766         if (vsi->netdev) {
3767                 netif_carrier_off(vsi->netdev);
3768                 netif_tx_disable(vsi->netdev);
3769         }
3770         i40e_vsi_disable_irq(vsi);
3771         i40e_vsi_control_rings(vsi, false);
3772         i40e_napi_disable_all(vsi);
3773
3774         for (i = 0; i < vsi->num_queue_pairs; i++) {
3775                 i40e_clean_tx_ring(&vsi->tx_rings[i]);
3776                 i40e_clean_rx_ring(&vsi->rx_rings[i]);
3777         }
3778 }
3779
3780 /**
3781  * i40e_setup_tc - configure multiple traffic classes
3782  * @netdev: net device to configure
3783  * @tc: number of traffic classes to enable
3784  **/
3785 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
3786 {
3787         struct i40e_netdev_priv *np = netdev_priv(netdev);
3788         struct i40e_vsi *vsi = np->vsi;
3789         struct i40e_pf *pf = vsi->back;
3790         u8 enabled_tc = 0;
3791         int ret = -EINVAL;
3792         int i;
3793
3794         /* Check if DCB enabled to continue */
3795         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
3796                 netdev_info(netdev, "DCB is not enabled for adapter\n");
3797                 goto exit;
3798         }
3799
3800         /* Check if MFP enabled */
3801         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3802                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
3803                 goto exit;
3804         }
3805
3806         /* Check whether tc count is within enabled limit */
3807         if (tc > i40e_pf_get_num_tc(pf)) {
3808                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
3809                 goto exit;
3810         }
3811
3812         /* Generate TC map for number of tc requested */
3813         for (i = 0; i < tc; i++)
3814                 enabled_tc |= (1 << i);
3815
3816         /* Requesting same TC configuration as already enabled */
3817         if (enabled_tc == vsi->tc_config.enabled_tc)
3818                 return 0;
3819
3820         /* Quiesce VSI queues */
3821         i40e_quiesce_vsi(vsi);
3822
3823         /* Configure VSI for enabled TCs */
3824         ret = i40e_vsi_config_tc(vsi, enabled_tc);
3825         if (ret) {
3826                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
3827                             vsi->seid);
3828                 goto exit;
3829         }
3830
3831         /* Unquiesce VSI */
3832         i40e_unquiesce_vsi(vsi);
3833
3834 exit:
3835         return ret;
3836 }
3837
3838 /**
3839  * i40e_open - Called when a network interface is made active
3840  * @netdev: network interface device structure
3841  *
3842  * The open entry point is called when a network interface is made
3843  * active by the system (IFF_UP).  At this point all resources needed
3844  * for transmit and receive operations are allocated, the interrupt
3845  * handler is registered with the OS, the netdev watchdog subtask is
3846  * enabled, and the stack is notified that the interface is ready.
3847  *
3848  * Returns 0 on success, negative value on failure
3849  **/
3850 static int i40e_open(struct net_device *netdev)
3851 {
3852         struct i40e_netdev_priv *np = netdev_priv(netdev);
3853         struct i40e_vsi *vsi = np->vsi;
3854         struct i40e_pf *pf = vsi->back;
3855         char int_name[IFNAMSIZ];
3856         int err;
3857
3858         /* disallow open during test */
3859         if (test_bit(__I40E_TESTING, &pf->state))
3860                 return -EBUSY;
3861
3862         netif_carrier_off(netdev);
3863
3864         /* allocate descriptors */
3865         err = i40e_vsi_setup_tx_resources(vsi);
3866         if (err)
3867                 goto err_setup_tx;
3868         err = i40e_vsi_setup_rx_resources(vsi);
3869         if (err)
3870                 goto err_setup_rx;
3871
3872         err = i40e_vsi_configure(vsi);
3873         if (err)
3874                 goto err_setup_rx;
3875
3876         snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
3877                  dev_driver_string(&pf->pdev->dev), netdev->name);
3878         err = i40e_vsi_request_irq(vsi, int_name);
3879         if (err)
3880                 goto err_setup_rx;
3881
3882         err = i40e_up_complete(vsi);
3883         if (err)
3884                 goto err_up_complete;
3885
3886         if ((vsi->type == I40E_VSI_MAIN) || (vsi->type == I40E_VSI_VMDQ2)) {
3887                 err = i40e_aq_set_vsi_broadcast(&pf->hw, vsi->seid, true, NULL);
3888                 if (err)
3889                         netdev_info(netdev,
3890                                     "couldn't set broadcast err %d aq_err %d\n",
3891                                     err, pf->hw.aq.asq_last_status);
3892         }
3893
3894         return 0;
3895
3896 err_up_complete:
3897         i40e_down(vsi);
3898         i40e_vsi_free_irq(vsi);
3899 err_setup_rx:
3900         i40e_vsi_free_rx_resources(vsi);
3901 err_setup_tx:
3902         i40e_vsi_free_tx_resources(vsi);
3903         if (vsi == pf->vsi[pf->lan_vsi])
3904                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
3905
3906         return err;
3907 }
3908
3909 /**
3910  * i40e_close - Disables a network interface
3911  * @netdev: network interface device structure
3912  *
3913  * The close entry point is called when an interface is de-activated
3914  * by the OS.  The hardware is still under the driver's control, but
3915  * this netdev interface is disabled.
3916  *
3917  * Returns 0, this is not allowed to fail
3918  **/
3919 static int i40e_close(struct net_device *netdev)
3920 {
3921         struct i40e_netdev_priv *np = netdev_priv(netdev);
3922         struct i40e_vsi *vsi = np->vsi;
3923
3924         if (test_and_set_bit(__I40E_DOWN, &vsi->state))
3925                 return 0;
3926
3927         i40e_down(vsi);
3928         i40e_vsi_free_irq(vsi);
3929
3930         i40e_vsi_free_tx_resources(vsi);
3931         i40e_vsi_free_rx_resources(vsi);
3932
3933         return 0;
3934 }
3935
3936 /**
3937  * i40e_do_reset - Start a PF or Core Reset sequence
3938  * @pf: board private structure
3939  * @reset_flags: which reset is requested
3940  *
3941  * The essential difference in resets is that the PF Reset
3942  * doesn't clear the packet buffers, doesn't reset the PE
3943  * firmware, and doesn't bother the other PFs on the chip.
3944  **/
3945 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
3946 {
3947         u32 val;
3948
3949         WARN_ON(in_interrupt());
3950
3951         /* do the biggest reset indicated */
3952         if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {
3953
3954                 /* Request a Global Reset
3955                  *
3956                  * This will start the chip's countdown to the actual full
3957                  * chip reset event, and a warning interrupt to be sent
3958                  * to all PFs, including the requestor.  Our handler
3959                  * for the warning interrupt will deal with the shutdown
3960                  * and recovery of the switch setup.
3961                  */
3962                 dev_info(&pf->pdev->dev, "GlobalR requested\n");
3963                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
3964                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
3965                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
3966
3967         } else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {
3968
3969                 /* Request a Core Reset
3970                  *
3971                  * Same as Global Reset, except does *not* include the MAC/PHY
3972                  */
3973                 dev_info(&pf->pdev->dev, "CoreR requested\n");
3974                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
3975                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
3976                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
3977                 i40e_flush(&pf->hw);
3978
3979         } else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
3980
3981                 /* Request a PF Reset
3982                  *
3983                  * Resets only the PF-specific registers
3984                  *
3985                  * This goes directly to the tear-down and rebuild of
3986                  * the switch, since we need to do all the recovery as
3987                  * for the Core Reset.
3988                  */
3989                 dev_info(&pf->pdev->dev, "PFR requested\n");
3990                 i40e_handle_reset_warning(pf);
3991
3992         } else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
3993                 int v;
3994
3995                 /* Find the VSI(s) that requested a re-init */
3996                 dev_info(&pf->pdev->dev,
3997                          "VSI reinit requested\n");
3998                 for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
3999                         struct i40e_vsi *vsi = pf->vsi[v];
4000                         if (vsi != NULL &&
4001                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
4002                                 i40e_vsi_reinit_locked(pf->vsi[v]);
4003                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
4004                         }
4005                 }
4006
4007                 /* no further action needed, so return now */
4008                 return;
4009         } else {
4010                 dev_info(&pf->pdev->dev,
4011                          "bad reset request 0x%08x\n", reset_flags);
4012                 return;
4013         }
4014 }
4015
4016 /**
4017  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
4018  * @pf: board private structure
4019  * @e: event info posted on ARQ
4020  *
4021  * Handler for LAN Queue Overflow Event generated by the firmware for PF
4022  * and VF queues
4023  **/
4024 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
4025                                            struct i40e_arq_event_info *e)
4026 {
4027         struct i40e_aqc_lan_overflow *data =
4028                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
4029         u32 queue = le32_to_cpu(data->prtdcb_rupto);
4030         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
4031         struct i40e_hw *hw = &pf->hw;
4032         struct i40e_vf *vf;
4033         u16 vf_id;
4034
4035         dev_info(&pf->pdev->dev, "%s: Rx Queue Number = %d QTX_CTL=0x%08x\n",
4036                  __func__, queue, qtx_ctl);
4037
4038         /* Queue belongs to VF, find the VF and issue VF reset */
4039         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
4040             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
4041                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
4042                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
4043                 vf_id -= hw->func_caps.vf_base_id;
4044                 vf = &pf->vf[vf_id];
4045                 i40e_vc_notify_vf_reset(vf);
4046                 /* Allow VF to process pending reset notification */
4047                 msleep(20);
4048                 i40e_reset_vf(vf, false);
4049         }
4050 }
4051
4052 /**
4053  * i40e_service_event_complete - Finish up the service event
4054  * @pf: board private structure
4055  **/
4056 static void i40e_service_event_complete(struct i40e_pf *pf)
4057 {
4058         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
4059
4060         /* flush memory to make sure state is correct before next watchog */
4061         smp_mb__before_clear_bit();
4062         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
4063 }
4064
4065 /**
4066  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
4067  * @pf: board private structure
4068  **/
4069 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
4070 {
4071         if (!(pf->flags & I40E_FLAG_FDIR_REQUIRES_REINIT))
4072                 return;
4073
4074         pf->flags &= ~I40E_FLAG_FDIR_REQUIRES_REINIT;
4075
4076         /* if interface is down do nothing */
4077         if (test_bit(__I40E_DOWN, &pf->state))
4078                 return;
4079 }
4080
4081 /**
4082  * i40e_vsi_link_event - notify VSI of a link event
4083  * @vsi: vsi to be notified
4084  * @link_up: link up or down
4085  **/
4086 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
4087 {
4088         if (!vsi)
4089                 return;
4090
4091         switch (vsi->type) {
4092         case I40E_VSI_MAIN:
4093                 if (!vsi->netdev || !vsi->netdev_registered)
4094                         break;
4095
4096                 if (link_up) {
4097                         netif_carrier_on(vsi->netdev);
4098                         netif_tx_wake_all_queues(vsi->netdev);
4099                 } else {
4100                         netif_carrier_off(vsi->netdev);
4101                         netif_tx_stop_all_queues(vsi->netdev);
4102                 }
4103                 break;
4104
4105         case I40E_VSI_SRIOV:
4106                 break;
4107
4108         case I40E_VSI_VMDQ2:
4109         case I40E_VSI_CTRL:
4110         case I40E_VSI_MIRROR:
4111         default:
4112                 /* there is no notification for other VSIs */
4113                 break;
4114         }
4115 }
4116
4117 /**
4118  * i40e_veb_link_event - notify elements on the veb of a link event
4119  * @veb: veb to be notified
4120  * @link_up: link up or down
4121  **/
4122 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
4123 {
4124         struct i40e_pf *pf;
4125         int i;
4126
4127         if (!veb || !veb->pf)
4128                 return;
4129         pf = veb->pf;
4130
4131         /* depth first... */
4132         for (i = 0; i < I40E_MAX_VEB; i++)
4133                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
4134                         i40e_veb_link_event(pf->veb[i], link_up);
4135
4136         /* ... now the local VSIs */
4137         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
4138                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
4139                         i40e_vsi_link_event(pf->vsi[i], link_up);
4140 }
4141
4142 /**
4143  * i40e_link_event - Update netif_carrier status
4144  * @pf: board private structure
4145  **/
4146 static void i40e_link_event(struct i40e_pf *pf)
4147 {
4148         bool new_link, old_link;
4149
4150         new_link = (pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP);
4151         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
4152
4153         if (new_link == old_link)
4154                 return;
4155
4156         netdev_info(pf->vsi[pf->lan_vsi]->netdev,
4157                     "NIC Link is %s\n", (new_link ? "Up" : "Down"));
4158
4159         /* Notify the base of the switch tree connected to
4160          * the link.  Floating VEBs are not notified.
4161          */
4162         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
4163                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
4164         else
4165                 i40e_vsi_link_event(pf->vsi[pf->lan_vsi], new_link);
4166
4167         if (pf->vf)
4168                 i40e_vc_notify_link_state(pf);
4169 }
4170
4171 /**
4172  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
4173  * @pf: board private structure
4174  *
4175  * Set the per-queue flags to request a check for stuck queues in the irq
4176  * clean functions, then force interrupts to be sure the irq clean is called.
4177  **/
4178 static void i40e_check_hang_subtask(struct i40e_pf *pf)
4179 {
4180         int i, v;
4181
4182         /* If we're down or resetting, just bail */
4183         if (test_bit(__I40E_CONFIG_BUSY, &pf->state))
4184                 return;
4185
4186         /* for each VSI/netdev
4187          *     for each Tx queue
4188          *         set the check flag
4189          *     for each q_vector
4190          *         force an interrupt
4191          */
4192         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4193                 struct i40e_vsi *vsi = pf->vsi[v];
4194                 int armed = 0;
4195
4196                 if (!pf->vsi[v] ||
4197                     test_bit(__I40E_DOWN, &vsi->state) ||
4198                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
4199                         continue;
4200
4201                 for (i = 0; i < vsi->num_queue_pairs; i++) {
4202                         set_check_for_tx_hang(&vsi->tx_rings[i]);
4203                         if (test_bit(__I40E_HANG_CHECK_ARMED,
4204                                      &vsi->tx_rings[i].state))
4205                                 armed++;
4206                 }
4207
4208                 if (armed) {
4209                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
4210                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
4211                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
4212                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK));
4213                         } else {
4214                                 u16 vec = vsi->base_vector - 1;
4215                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
4216                                            I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK);
4217                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
4218                                         wr32(&vsi->back->hw,
4219                                              I40E_PFINT_DYN_CTLN(vec), val);
4220                         }
4221                         i40e_flush(&vsi->back->hw);
4222                 }
4223         }
4224 }
4225
4226 /**
4227  * i40e_watchdog_subtask - Check and bring link up
4228  * @pf: board private structure
4229  **/
4230 static void i40e_watchdog_subtask(struct i40e_pf *pf)
4231 {
4232         int i;
4233
4234         /* if interface is down do nothing */
4235         if (test_bit(__I40E_DOWN, &pf->state) ||
4236             test_bit(__I40E_CONFIG_BUSY, &pf->state))
4237                 return;
4238
4239         /* Update the stats for active netdevs so the network stack
4240          * can look at updated numbers whenever it cares to
4241          */
4242         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
4243                 if (pf->vsi[i] && pf->vsi[i]->netdev)
4244                         i40e_update_stats(pf->vsi[i]);
4245
4246         /* Update the stats for the active switching components */
4247         for (i = 0; i < I40E_MAX_VEB; i++)
4248                 if (pf->veb[i])
4249                         i40e_update_veb_stats(pf->veb[i]);
4250 }
4251
4252 /**
4253  * i40e_reset_subtask - Set up for resetting the device and driver
4254  * @pf: board private structure
4255  **/
4256 static void i40e_reset_subtask(struct i40e_pf *pf)
4257 {
4258         u32 reset_flags = 0;
4259
4260         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
4261                 reset_flags |= (1 << __I40E_REINIT_REQUESTED);
4262                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
4263         }
4264         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
4265                 reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
4266                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4267         }
4268         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
4269                 reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
4270                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
4271         }
4272         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
4273                 reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
4274                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
4275         }
4276
4277         /* If there's a recovery already waiting, it takes
4278          * precedence before starting a new reset sequence.
4279          */
4280         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
4281                 i40e_handle_reset_warning(pf);
4282                 return;
4283         }
4284
4285         /* If we're already down or resetting, just bail */
4286         if (reset_flags &&
4287             !test_bit(__I40E_DOWN, &pf->state) &&
4288             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
4289                 i40e_do_reset(pf, reset_flags);
4290 }
4291
4292 /**
4293  * i40e_handle_link_event - Handle link event
4294  * @pf: board private structure
4295  * @e: event info posted on ARQ
4296  **/
4297 static void i40e_handle_link_event(struct i40e_pf *pf,
4298                                    struct i40e_arq_event_info *e)
4299 {
4300         struct i40e_hw *hw = &pf->hw;
4301         struct i40e_aqc_get_link_status *status =
4302                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
4303         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
4304
4305         /* save off old link status information */
4306         memcpy(&pf->hw.phy.link_info_old, hw_link_info,
4307                sizeof(pf->hw.phy.link_info_old));
4308
4309         /* update link status */
4310         hw_link_info->phy_type = (enum i40e_aq_phy_type)status->phy_type;
4311         hw_link_info->link_speed = (enum i40e_aq_link_speed)status->link_speed;
4312         hw_link_info->link_info = status->link_info;
4313         hw_link_info->an_info = status->an_info;
4314         hw_link_info->ext_info = status->ext_info;
4315         hw_link_info->lse_enable =
4316                 le16_to_cpu(status->command_flags) &
4317                             I40E_AQ_LSE_ENABLE;
4318
4319         /* process the event */
4320         i40e_link_event(pf);
4321
4322         /* Do a new status request to re-enable LSE reporting
4323          * and load new status information into the hw struct,
4324          * then see if the status changed while processing the
4325          * initial event.
4326          */
4327         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
4328         i40e_link_event(pf);
4329 }
4330
4331 /**
4332  * i40e_clean_adminq_subtask - Clean the AdminQ rings
4333  * @pf: board private structure
4334  **/
4335 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
4336 {
4337         struct i40e_arq_event_info event;
4338         struct i40e_hw *hw = &pf->hw;
4339         u16 pending, i = 0;
4340         i40e_status ret;
4341         u16 opcode;
4342         u32 val;
4343
4344         if (!test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state))
4345                 return;
4346
4347         event.msg_size = I40E_MAX_AQ_BUF_SIZE;
4348         event.msg_buf = kzalloc(event.msg_size, GFP_KERNEL);
4349         if (!event.msg_buf)
4350                 return;
4351
4352         do {
4353                 ret = i40e_clean_arq_element(hw, &event, &pending);
4354                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK) {
4355                         dev_info(&pf->pdev->dev, "No ARQ event found\n");
4356                         break;
4357                 } else if (ret) {
4358                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
4359                         break;
4360                 }
4361
4362                 opcode = le16_to_cpu(event.desc.opcode);
4363                 switch (opcode) {
4364
4365                 case i40e_aqc_opc_get_link_status:
4366                         i40e_handle_link_event(pf, &event);
4367                         break;
4368                 case i40e_aqc_opc_send_msg_to_pf:
4369                         ret = i40e_vc_process_vf_msg(pf,
4370                                         le16_to_cpu(event.desc.retval),
4371                                         le32_to_cpu(event.desc.cookie_high),
4372                                         le32_to_cpu(event.desc.cookie_low),
4373                                         event.msg_buf,
4374                                         event.msg_size);
4375                         break;
4376                 case i40e_aqc_opc_lldp_update_mib:
4377                         dev_info(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
4378                         break;
4379                 case i40e_aqc_opc_event_lan_overflow:
4380                         dev_info(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
4381                         i40e_handle_lan_overflow_event(pf, &event);
4382                         break;
4383                 default:
4384                         dev_info(&pf->pdev->dev,
4385                                  "ARQ Error: Unknown event %d received\n",
4386                                  event.desc.opcode);
4387                         break;
4388                 }
4389         } while (pending && (i++ < pf->adminq_work_limit));
4390
4391         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
4392         /* re-enable Admin queue interrupt cause */
4393         val = rd32(hw, I40E_PFINT_ICR0_ENA);
4394         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
4395         wr32(hw, I40E_PFINT_ICR0_ENA, val);
4396         i40e_flush(hw);
4397
4398         kfree(event.msg_buf);
4399 }
4400
4401 /**
4402  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
4403  * @veb: pointer to the VEB instance
4404  *
4405  * This is a recursive function that first builds the attached VSIs then
4406  * recurses in to build the next layer of VEB.  We track the connections
4407  * through our own index numbers because the seid's from the HW could
4408  * change across the reset.
4409  **/
4410 static int i40e_reconstitute_veb(struct i40e_veb *veb)
4411 {
4412         struct i40e_vsi *ctl_vsi = NULL;
4413         struct i40e_pf *pf = veb->pf;
4414         int v, veb_idx;
4415         int ret;
4416
4417         /* build VSI that owns this VEB, temporarily attached to base VEB */
4418         for (v = 0; v < pf->hw.func_caps.num_vsis && !ctl_vsi; v++) {
4419                 if (pf->vsi[v] &&
4420                     pf->vsi[v]->veb_idx == veb->idx &&
4421                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
4422                         ctl_vsi = pf->vsi[v];
4423                         break;
4424                 }
4425         }
4426         if (!ctl_vsi) {
4427                 dev_info(&pf->pdev->dev,
4428                          "missing owner VSI for veb_idx %d\n", veb->idx);
4429                 ret = -ENOENT;
4430                 goto end_reconstitute;
4431         }
4432         if (ctl_vsi != pf->vsi[pf->lan_vsi])
4433                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
4434         ret = i40e_add_vsi(ctl_vsi);
4435         if (ret) {
4436                 dev_info(&pf->pdev->dev,
4437                          "rebuild of owner VSI failed: %d\n", ret);
4438                 goto end_reconstitute;
4439         }
4440         i40e_vsi_reset_stats(ctl_vsi);
4441
4442         /* create the VEB in the switch and move the VSI onto the VEB */
4443         ret = i40e_add_veb(veb, ctl_vsi);
4444         if (ret)
4445                 goto end_reconstitute;
4446
4447         /* create the remaining VSIs attached to this VEB */
4448         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4449                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
4450                         continue;
4451
4452                 if (pf->vsi[v]->veb_idx == veb->idx) {
4453                         struct i40e_vsi *vsi = pf->vsi[v];
4454                         vsi->uplink_seid = veb->seid;
4455                         ret = i40e_add_vsi(vsi);
4456                         if (ret) {
4457                                 dev_info(&pf->pdev->dev,
4458                                          "rebuild of vsi_idx %d failed: %d\n",
4459                                          v, ret);
4460                                 goto end_reconstitute;
4461                         }
4462                         i40e_vsi_reset_stats(vsi);
4463                 }
4464         }
4465
4466         /* create any VEBs attached to this VEB - RECURSION */
4467         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
4468                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
4469                         pf->veb[veb_idx]->uplink_seid = veb->seid;
4470                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
4471                         if (ret)
4472                                 break;
4473                 }
4474         }
4475
4476 end_reconstitute:
4477         return ret;
4478 }
4479
4480 /**
4481  * i40e_get_capabilities - get info about the HW
4482  * @pf: the PF struct
4483  **/
4484 static int i40e_get_capabilities(struct i40e_pf *pf)
4485 {
4486         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
4487         u16 data_size;
4488         int buf_len;
4489         int err;
4490
4491         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
4492         do {
4493                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
4494                 if (!cap_buf)
4495                         return -ENOMEM;
4496
4497                 /* this loads the data into the hw struct for us */
4498                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
4499                                             &data_size,
4500                                             i40e_aqc_opc_list_func_capabilities,
4501                                             NULL);
4502                 /* data loaded, buffer no longer needed */
4503                 kfree(cap_buf);
4504
4505                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
4506                         /* retry with a larger buffer */
4507                         buf_len = data_size;
4508                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
4509                         dev_info(&pf->pdev->dev,
4510                                  "capability discovery failed: aq=%d\n",
4511                                  pf->hw.aq.asq_last_status);
4512                         return -ENODEV;
4513                 }
4514         } while (err);
4515
4516         if (pf->hw.debug_mask & I40E_DEBUG_USER)
4517                 dev_info(&pf->pdev->dev,
4518                          "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",
4519                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
4520                          pf->hw.func_caps.num_msix_vectors,
4521                          pf->hw.func_caps.num_msix_vectors_vf,
4522                          pf->hw.func_caps.fd_filters_guaranteed,
4523                          pf->hw.func_caps.fd_filters_best_effort,
4524                          pf->hw.func_caps.num_tx_qp,
4525                          pf->hw.func_caps.num_vsis);
4526
4527         return 0;
4528 }
4529
4530 /**
4531  * i40e_fdir_setup - initialize the Flow Director resources
4532  * @pf: board private structure
4533  **/
4534 static void i40e_fdir_setup(struct i40e_pf *pf)
4535 {
4536         struct i40e_vsi *vsi;
4537         bool new_vsi = false;
4538         int err, i;
4539
4540         if (!(pf->flags & (I40E_FLAG_FDIR_ENABLED|I40E_FLAG_FDIR_ATR_ENABLED)))
4541                 return;
4542
4543         pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
4544
4545         /* find existing or make new FDIR VSI */
4546         vsi = NULL;
4547         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
4548                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR)
4549                         vsi = pf->vsi[i];
4550         if (!vsi) {
4551                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR, pf->mac_seid, 0);
4552                 if (!vsi) {
4553                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
4554                         pf->flags &= ~I40E_FLAG_FDIR_ENABLED;
4555                         return;
4556                 }
4557                 new_vsi = true;
4558         }
4559         WARN_ON(vsi->base_queue != I40E_FDIR_RING);
4560         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_rings);
4561
4562         err = i40e_vsi_setup_tx_resources(vsi);
4563         if (!err)
4564                 err = i40e_vsi_setup_rx_resources(vsi);
4565         if (!err)
4566                 err = i40e_vsi_configure(vsi);
4567         if (!err && new_vsi) {
4568                 char int_name[IFNAMSIZ + 9];
4569                 snprintf(int_name, sizeof(int_name) - 1, "%s-fdir",
4570                          dev_driver_string(&pf->pdev->dev));
4571                 err = i40e_vsi_request_irq(vsi, int_name);
4572         }
4573         if (!err)
4574                 err = i40e_up_complete(vsi);
4575
4576         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4577 }
4578
4579 /**
4580  * i40e_fdir_teardown - release the Flow Director resources
4581  * @pf: board private structure
4582  **/
4583 static void i40e_fdir_teardown(struct i40e_pf *pf)
4584 {
4585         int i;
4586
4587         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
4588                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
4589                         i40e_vsi_release(pf->vsi[i]);
4590                         break;
4591                 }
4592         }
4593 }
4594
4595 /**
4596  * i40e_handle_reset_warning - prep for the core to reset
4597  * @pf: board private structure
4598  *
4599  * Close up the VFs and other things in prep for a Core Reset,
4600  * then get ready to rebuild the world.
4601  **/
4602 static void i40e_handle_reset_warning(struct i40e_pf *pf)
4603 {
4604         struct i40e_driver_version dv;
4605         struct i40e_hw *hw = &pf->hw;
4606         i40e_status ret;
4607         u32 v;
4608
4609         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
4610         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
4611                 return;
4612
4613         dev_info(&pf->pdev->dev, "Tearing down internal switch for reset\n");
4614
4615         i40e_vc_notify_reset(pf);
4616
4617         /* quiesce the VSIs and their queues that are not already DOWN */
4618         i40e_pf_quiesce_all_vsi(pf);
4619
4620         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4621                 if (pf->vsi[v])
4622                         pf->vsi[v]->seid = 0;
4623         }
4624
4625         i40e_shutdown_adminq(&pf->hw);
4626
4627         /* Now we wait for GRST to settle out.
4628          * We don't have to delete the VEBs or VSIs from the hw switch
4629          * because the reset will make them disappear.
4630          */
4631         ret = i40e_pf_reset(hw);
4632         if (ret)
4633                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
4634         pf->pfr_count++;
4635
4636         if (test_bit(__I40E_DOWN, &pf->state))
4637                 goto end_core_reset;
4638         dev_info(&pf->pdev->dev, "Rebuilding internal switch\n");
4639
4640         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
4641         ret = i40e_init_adminq(&pf->hw);
4642         if (ret) {
4643                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
4644                 goto end_core_reset;
4645         }
4646
4647         ret = i40e_get_capabilities(pf);
4648         if (ret) {
4649                 dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
4650                          ret);
4651                 goto end_core_reset;
4652         }
4653
4654         /* call shutdown HMC */
4655         ret = i40e_shutdown_lan_hmc(hw);
4656         if (ret) {
4657                 dev_info(&pf->pdev->dev, "shutdown_lan_hmc failed: %d\n", ret);
4658                 goto end_core_reset;
4659         }
4660
4661         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
4662                                 hw->func_caps.num_rx_qp,
4663                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
4664         if (ret) {
4665                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
4666                 goto end_core_reset;
4667         }
4668         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
4669         if (ret) {
4670                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
4671                 goto end_core_reset;
4672         }
4673
4674         /* do basic switch setup */
4675         ret = i40e_setup_pf_switch(pf);
4676         if (ret)
4677                 goto end_core_reset;
4678
4679         /* Rebuild the VSIs and VEBs that existed before reset.
4680          * They are still in our local switch element arrays, so only
4681          * need to rebuild the switch model in the HW.
4682          *
4683          * If there were VEBs but the reconstitution failed, we'll try
4684          * try to recover minimal use by getting the basic PF VSI working.
4685          */
4686         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
4687                 dev_info(&pf->pdev->dev, "attempting to rebuild switch\n");
4688                 /* find the one VEB connected to the MAC, and find orphans */
4689                 for (v = 0; v < I40E_MAX_VEB; v++) {
4690                         if (!pf->veb[v])
4691                                 continue;
4692
4693                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
4694                             pf->veb[v]->uplink_seid == 0) {
4695                                 ret = i40e_reconstitute_veb(pf->veb[v]);
4696
4697                                 if (!ret)
4698                                         continue;
4699
4700                                 /* If Main VEB failed, we're in deep doodoo,
4701                                  * so give up rebuilding the switch and set up
4702                                  * for minimal rebuild of PF VSI.
4703                                  * If orphan failed, we'll report the error
4704                                  * but try to keep going.
4705                                  */
4706                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
4707                                         dev_info(&pf->pdev->dev,
4708                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
4709                                                  ret);
4710                                         pf->vsi[pf->lan_vsi]->uplink_seid
4711                                                                 = pf->mac_seid;
4712                                         break;
4713                                 } else if (pf->veb[v]->uplink_seid == 0) {
4714                                         dev_info(&pf->pdev->dev,
4715                                                  "rebuild of orphan VEB failed: %d\n",
4716                                                  ret);
4717                                 }
4718                         }
4719                 }
4720         }
4721
4722         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
4723                 dev_info(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
4724                 /* no VEB, so rebuild only the Main VSI */
4725                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
4726                 if (ret) {
4727                         dev_info(&pf->pdev->dev,
4728                                  "rebuild of Main VSI failed: %d\n", ret);
4729                         goto end_core_reset;
4730                 }
4731         }
4732
4733         /* reinit the misc interrupt */
4734         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4735                 ret = i40e_setup_misc_vector(pf);
4736
4737         /* restart the VSIs that were rebuilt and running before the reset */
4738         i40e_pf_unquiesce_all_vsi(pf);
4739
4740         /* tell the firmware that we're starting */
4741         dv.major_version = DRV_VERSION_MAJOR;
4742         dv.minor_version = DRV_VERSION_MINOR;
4743         dv.build_version = DRV_VERSION_BUILD;
4744         dv.subbuild_version = 0;
4745         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
4746
4747         dev_info(&pf->pdev->dev, "PF reset done\n");
4748
4749 end_core_reset:
4750         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
4751 }
4752
4753 /**
4754  * i40e_handle_mdd_event
4755  * @pf: pointer to the pf structure
4756  *
4757  * Called from the MDD irq handler to identify possibly malicious vfs
4758  **/
4759 static void i40e_handle_mdd_event(struct i40e_pf *pf)
4760 {
4761         struct i40e_hw *hw = &pf->hw;
4762         bool mdd_detected = false;
4763         struct i40e_vf *vf;
4764         u32 reg;
4765         int i;
4766
4767         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
4768                 return;
4769
4770         /* find what triggered the MDD event */
4771         reg = rd32(hw, I40E_GL_MDET_TX);
4772         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
4773                 u8 func = (reg & I40E_GL_MDET_TX_FUNCTION_MASK)
4774                                 >> I40E_GL_MDET_TX_FUNCTION_SHIFT;
4775                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_SHIFT)
4776                                 >> I40E_GL_MDET_TX_EVENT_SHIFT;
4777                 u8 queue = (reg & I40E_GL_MDET_TX_QUEUE_MASK)
4778                                 >> I40E_GL_MDET_TX_QUEUE_SHIFT;
4779                 dev_info(&pf->pdev->dev,
4780                          "Malicious Driver Detection TX event 0x%02x on q %d of function 0x%02x\n",
4781                          event, queue, func);
4782                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
4783                 mdd_detected = true;
4784         }
4785         reg = rd32(hw, I40E_GL_MDET_RX);
4786         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
4787                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK)
4788                                 >> I40E_GL_MDET_RX_FUNCTION_SHIFT;
4789                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_SHIFT)
4790                                 >> I40E_GL_MDET_RX_EVENT_SHIFT;
4791                 u8 queue = (reg & I40E_GL_MDET_RX_QUEUE_MASK)
4792                                 >> I40E_GL_MDET_RX_QUEUE_SHIFT;
4793                 dev_info(&pf->pdev->dev,
4794                          "Malicious Driver Detection RX event 0x%02x on q %d of function 0x%02x\n",
4795                          event, queue, func);
4796                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
4797                 mdd_detected = true;
4798         }
4799
4800         /* see if one of the VFs needs its hand slapped */
4801         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
4802                 vf = &(pf->vf[i]);
4803                 reg = rd32(hw, I40E_VP_MDET_TX(i));
4804                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
4805                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
4806                         vf->num_mdd_events++;
4807                         dev_info(&pf->pdev->dev, "MDD TX event on VF %d\n", i);
4808                 }
4809
4810                 reg = rd32(hw, I40E_VP_MDET_RX(i));
4811                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
4812                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
4813                         vf->num_mdd_events++;
4814                         dev_info(&pf->pdev->dev, "MDD RX event on VF %d\n", i);
4815                 }
4816
4817                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
4818                         dev_info(&pf->pdev->dev,
4819                                  "Too many MDD events on VF %d, disabled\n", i);
4820                         dev_info(&pf->pdev->dev,
4821                                  "Use PF Control I/F to re-enable the VF\n");
4822                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
4823                 }
4824         }
4825
4826         /* re-enable mdd interrupt cause */
4827         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
4828         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
4829         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
4830         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
4831         i40e_flush(hw);
4832 }
4833
4834 /**
4835  * i40e_service_task - Run the driver's async subtasks
4836  * @work: pointer to work_struct containing our data
4837  **/
4838 static void i40e_service_task(struct work_struct *work)
4839 {
4840         struct i40e_pf *pf = container_of(work,
4841                                           struct i40e_pf,
4842                                           service_task);
4843         unsigned long start_time = jiffies;
4844
4845         i40e_reset_subtask(pf);
4846         i40e_handle_mdd_event(pf);
4847         i40e_vc_process_vflr_event(pf);
4848         i40e_watchdog_subtask(pf);
4849         i40e_fdir_reinit_subtask(pf);
4850         i40e_check_hang_subtask(pf);
4851         i40e_sync_filters_subtask(pf);
4852         i40e_clean_adminq_subtask(pf);
4853
4854         i40e_service_event_complete(pf);
4855
4856         /* If the tasks have taken longer than one timer cycle or there
4857          * is more work to be done, reschedule the service task now
4858          * rather than wait for the timer to tick again.
4859          */
4860         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
4861             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
4862             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
4863             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
4864                 i40e_service_event_schedule(pf);
4865 }
4866
4867 /**
4868  * i40e_service_timer - timer callback
4869  * @data: pointer to PF struct
4870  **/
4871 static void i40e_service_timer(unsigned long data)
4872 {
4873         struct i40e_pf *pf = (struct i40e_pf *)data;
4874
4875         mod_timer(&pf->service_timer,
4876                   round_jiffies(jiffies + pf->service_timer_period));
4877         i40e_service_event_schedule(pf);
4878 }
4879
4880 /**
4881  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
4882  * @vsi: the VSI being configured
4883  **/
4884 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
4885 {
4886         struct i40e_pf *pf = vsi->back;
4887
4888         switch (vsi->type) {
4889         case I40E_VSI_MAIN:
4890                 vsi->alloc_queue_pairs = pf->num_lan_qps;
4891                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
4892                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
4893                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4894                         vsi->num_q_vectors = pf->num_lan_msix;
4895                 else
4896                         vsi->num_q_vectors = 1;
4897
4898                 break;
4899
4900         case I40E_VSI_FDIR:
4901                 vsi->alloc_queue_pairs = 1;
4902                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
4903                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
4904                 vsi->num_q_vectors = 1;
4905                 break;
4906
4907         case I40E_VSI_VMDQ2:
4908                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
4909                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
4910                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
4911                 vsi->num_q_vectors = pf->num_vmdq_msix;
4912                 break;
4913
4914         case I40E_VSI_SRIOV:
4915                 vsi->alloc_queue_pairs = pf->num_vf_qps;
4916                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
4917                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
4918                 break;
4919
4920         default:
4921                 WARN_ON(1);
4922                 return -ENODATA;
4923         }
4924
4925         return 0;
4926 }
4927
4928 /**
4929  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
4930  * @pf: board private structure
4931  * @type: type of VSI
4932  *
4933  * On error: returns error code (negative)
4934  * On success: returns vsi index in PF (positive)
4935  **/
4936 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
4937 {
4938         int ret = -ENODEV;
4939         struct i40e_vsi *vsi;
4940         int vsi_idx;
4941         int i;
4942
4943         /* Need to protect the allocation of the VSIs at the PF level */
4944         mutex_lock(&pf->switch_mutex);
4945
4946         /* VSI list may be fragmented if VSI creation/destruction has
4947          * been happening.  We can afford to do a quick scan to look
4948          * for any free VSIs in the list.
4949          *
4950          * find next empty vsi slot, looping back around if necessary
4951          */
4952         i = pf->next_vsi;
4953         while (i < pf->hw.func_caps.num_vsis && pf->vsi[i])
4954                 i++;
4955         if (i >= pf->hw.func_caps.num_vsis) {
4956                 i = 0;
4957                 while (i < pf->next_vsi && pf->vsi[i])
4958                         i++;
4959         }
4960
4961         if (i < pf->hw.func_caps.num_vsis && !pf->vsi[i]) {
4962                 vsi_idx = i;             /* Found one! */
4963         } else {
4964                 ret = -ENODEV;
4965                 goto err_alloc_vsi;  /* out of VSI slots! */
4966         }
4967         pf->next_vsi = ++i;
4968
4969         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
4970         if (!vsi) {
4971                 ret = -ENOMEM;
4972                 goto err_alloc_vsi;
4973         }
4974         vsi->type = type;
4975         vsi->back = pf;
4976         set_bit(__I40E_DOWN, &vsi->state);
4977         vsi->flags = 0;
4978         vsi->idx = vsi_idx;
4979         vsi->rx_itr_setting = pf->rx_itr_default;
4980         vsi->tx_itr_setting = pf->tx_itr_default;
4981         vsi->netdev_registered = false;
4982         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
4983         INIT_LIST_HEAD(&vsi->mac_filter_list);
4984
4985         i40e_set_num_rings_in_vsi(vsi);
4986
4987         /* Setup default MSIX irq handler for VSI */
4988         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
4989
4990         pf->vsi[vsi_idx] = vsi;
4991         ret = vsi_idx;
4992 err_alloc_vsi:
4993         mutex_unlock(&pf->switch_mutex);
4994         return ret;
4995 }
4996
4997 /**
4998  * i40e_vsi_clear - Deallocate the VSI provided
4999  * @vsi: the VSI being un-configured
5000  **/
5001 static int i40e_vsi_clear(struct i40e_vsi *vsi)
5002 {
5003         struct i40e_pf *pf;
5004
5005         if (!vsi)
5006                 return 0;
5007
5008         if (!vsi->back)
5009                 goto free_vsi;
5010         pf = vsi->back;
5011
5012         mutex_lock(&pf->switch_mutex);
5013         if (!pf->vsi[vsi->idx]) {
5014                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
5015                         vsi->idx, vsi->idx, vsi, vsi->type);
5016                 goto unlock_vsi;
5017         }
5018
5019         if (pf->vsi[vsi->idx] != vsi) {
5020                 dev_err(&pf->pdev->dev,
5021                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
5022                         pf->vsi[vsi->idx]->idx,
5023                         pf->vsi[vsi->idx],
5024                         pf->vsi[vsi->idx]->type,
5025                         vsi->idx, vsi, vsi->type);
5026                 goto unlock_vsi;
5027         }
5028
5029         /* updates the pf for this cleared vsi */
5030         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
5031         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
5032
5033         pf->vsi[vsi->idx] = NULL;
5034         if (vsi->idx < pf->next_vsi)
5035                 pf->next_vsi = vsi->idx;
5036
5037 unlock_vsi:
5038         mutex_unlock(&pf->switch_mutex);
5039 free_vsi:
5040         kfree(vsi);
5041
5042         return 0;
5043 }
5044
5045 /**
5046  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
5047  * @vsi: the VSI being configured
5048  **/
5049 static int i40e_alloc_rings(struct i40e_vsi *vsi)
5050 {
5051         struct i40e_pf *pf = vsi->back;
5052         int ret = 0;
5053         int i;
5054
5055         vsi->rx_rings = kcalloc(vsi->alloc_queue_pairs,
5056                                 sizeof(struct i40e_ring), GFP_KERNEL);
5057         if (!vsi->rx_rings) {
5058                 ret = -ENOMEM;
5059                 goto err_alloc_rings;
5060         }
5061
5062         vsi->tx_rings = kcalloc(vsi->alloc_queue_pairs,
5063                                 sizeof(struct i40e_ring), GFP_KERNEL);
5064         if (!vsi->tx_rings) {
5065                 ret = -ENOMEM;
5066                 kfree(vsi->rx_rings);
5067                 goto err_alloc_rings;
5068         }
5069
5070         /* Set basic values in the rings to be used later during open() */
5071         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
5072                 struct i40e_ring *rx_ring = &vsi->rx_rings[i];
5073                 struct i40e_ring *tx_ring = &vsi->tx_rings[i];
5074
5075                 tx_ring->queue_index = i;
5076                 tx_ring->reg_idx = vsi->base_queue + i;
5077                 tx_ring->ring_active = false;
5078                 tx_ring->vsi = vsi;
5079                 tx_ring->netdev = vsi->netdev;
5080                 tx_ring->dev = &pf->pdev->dev;
5081                 tx_ring->count = vsi->num_desc;
5082                 tx_ring->size = 0;
5083                 tx_ring->dcb_tc = 0;
5084
5085                 rx_ring->queue_index = i;
5086                 rx_ring->reg_idx = vsi->base_queue + i;
5087                 rx_ring->ring_active = false;
5088                 rx_ring->vsi = vsi;
5089                 rx_ring->netdev = vsi->netdev;
5090                 rx_ring->dev = &pf->pdev->dev;
5091                 rx_ring->count = vsi->num_desc;
5092                 rx_ring->size = 0;
5093                 rx_ring->dcb_tc = 0;
5094                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
5095                         set_ring_16byte_desc_enabled(rx_ring);
5096                 else
5097                         clear_ring_16byte_desc_enabled(rx_ring);
5098         }
5099
5100 err_alloc_rings:
5101         return ret;
5102 }
5103
5104 /**
5105  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
5106  * @vsi: the VSI being cleaned
5107  **/
5108 static int i40e_vsi_clear_rings(struct i40e_vsi *vsi)
5109 {
5110         if (vsi) {
5111                 kfree(vsi->rx_rings);
5112                 kfree(vsi->tx_rings);
5113         }
5114
5115         return 0;
5116 }
5117
5118 /**
5119  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
5120  * @pf: board private structure
5121  * @vectors: the number of MSI-X vectors to request
5122  *
5123  * Returns the number of vectors reserved, or error
5124  **/
5125 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
5126 {
5127         int err = 0;
5128
5129         pf->num_msix_entries = 0;
5130         while (vectors >= I40E_MIN_MSIX) {
5131                 err = pci_enable_msix(pf->pdev, pf->msix_entries, vectors);
5132                 if (err == 0) {
5133                         /* good to go */
5134                         pf->num_msix_entries = vectors;
5135                         break;
5136                 } else if (err < 0) {
5137                         /* total failure */
5138                         dev_info(&pf->pdev->dev,
5139                                  "MSI-X vector reservation failed: %d\n", err);
5140                         vectors = 0;
5141                         break;
5142                 } else {
5143                         /* err > 0 is the hint for retry */
5144                         dev_info(&pf->pdev->dev,
5145                                  "MSI-X vectors wanted %d, retrying with %d\n",
5146                                  vectors, err);
5147                         vectors = err;
5148                 }
5149         }
5150
5151         if (vectors > 0 && vectors < I40E_MIN_MSIX) {
5152                 dev_info(&pf->pdev->dev,
5153                          "Couldn't get enough vectors, only %d available\n",
5154                          vectors);
5155                 vectors = 0;
5156         }
5157
5158         return vectors;
5159 }
5160
5161 /**
5162  * i40e_init_msix - Setup the MSIX capability
5163  * @pf: board private structure
5164  *
5165  * Work with the OS to set up the MSIX vectors needed.
5166  *
5167  * Returns 0 on success, negative on failure
5168  **/
5169 static int i40e_init_msix(struct i40e_pf *pf)
5170 {
5171         i40e_status err = 0;
5172         struct i40e_hw *hw = &pf->hw;
5173         int v_budget, i;
5174         int vec;
5175
5176         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
5177                 return -ENODEV;
5178
5179         /* The number of vectors we'll request will be comprised of:
5180          *   - Add 1 for "other" cause for Admin Queue events, etc.
5181          *   - The number of LAN queue pairs
5182          *        already adjusted for the NUMA node
5183          *        assumes symmetric Tx/Rx pairing
5184          *   - The number of VMDq pairs
5185          * Once we count this up, try the request.
5186          *
5187          * If we can't get what we want, we'll simplify to nearly nothing
5188          * and try again.  If that still fails, we punt.
5189          */
5190         pf->num_lan_msix = pf->num_lan_qps;
5191         pf->num_vmdq_msix = pf->num_vmdq_qps;
5192         v_budget = 1 + pf->num_lan_msix;
5193         v_budget += (pf->num_vmdq_vsis * pf->num_vmdq_msix);
5194         if (pf->flags & I40E_FLAG_FDIR_ENABLED)
5195                 v_budget++;
5196
5197         /* Scale down if necessary, and the rings will share vectors */
5198         v_budget = min_t(int, v_budget, hw->func_caps.num_msix_vectors);
5199
5200         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
5201                                    GFP_KERNEL);
5202         if (!pf->msix_entries)
5203                 return -ENOMEM;
5204
5205         for (i = 0; i < v_budget; i++)
5206                 pf->msix_entries[i].entry = i;
5207         vec = i40e_reserve_msix_vectors(pf, v_budget);
5208         if (vec < I40E_MIN_MSIX) {
5209                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
5210                 kfree(pf->msix_entries);
5211                 pf->msix_entries = NULL;
5212                 return -ENODEV;
5213
5214         } else if (vec == I40E_MIN_MSIX) {
5215                 /* Adjust for minimal MSIX use */
5216                 dev_info(&pf->pdev->dev, "Features disabled, not enough MSIX vectors\n");
5217                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
5218                 pf->num_vmdq_vsis = 0;
5219                 pf->num_vmdq_qps = 0;
5220                 pf->num_vmdq_msix = 0;
5221                 pf->num_lan_qps = 1;
5222                 pf->num_lan_msix = 1;
5223
5224         } else if (vec != v_budget) {
5225                 /* Scale vector usage down */
5226                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
5227                 vec--;                    /* reserve the misc vector */
5228
5229                 /* partition out the remaining vectors */
5230                 switch (vec) {
5231                 case 2:
5232                         pf->num_vmdq_vsis = 1;
5233                         pf->num_lan_msix = 1;
5234                         break;
5235                 case 3:
5236                         pf->num_vmdq_vsis = 1;
5237                         pf->num_lan_msix = 2;
5238                         break;
5239                 default:
5240                         pf->num_lan_msix = min_t(int, (vec / 2),
5241                                                  pf->num_lan_qps);
5242                         pf->num_vmdq_vsis = min_t(int, (vec - pf->num_lan_msix),
5243                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
5244                         break;
5245                 }
5246         }
5247
5248         return err;
5249 }
5250
5251 /**
5252  * i40e_alloc_q_vectors - Allocate memory for interrupt vectors
5253  * @vsi: the VSI being configured
5254  *
5255  * We allocate one q_vector per queue interrupt.  If allocation fails we
5256  * return -ENOMEM.
5257  **/
5258 static int i40e_alloc_q_vectors(struct i40e_vsi *vsi)
5259 {
5260         struct i40e_pf *pf = vsi->back;
5261         int v_idx, num_q_vectors;
5262
5263         /* if not MSIX, give the one vector only to the LAN VSI */
5264         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5265                 num_q_vectors = vsi->num_q_vectors;
5266         else if (vsi == pf->vsi[pf->lan_vsi])
5267                 num_q_vectors = 1;
5268         else
5269                 return -EINVAL;
5270
5271         vsi->q_vectors = kcalloc(num_q_vectors,
5272                                  sizeof(struct i40e_q_vector),
5273                                  GFP_KERNEL);
5274         if (!vsi->q_vectors)
5275                 return -ENOMEM;
5276
5277         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
5278                 vsi->q_vectors[v_idx].vsi = vsi;
5279                 vsi->q_vectors[v_idx].v_idx = v_idx;
5280                 cpumask_set_cpu(v_idx, &vsi->q_vectors[v_idx].affinity_mask);
5281                 if (vsi->netdev)
5282                         netif_napi_add(vsi->netdev, &vsi->q_vectors[v_idx].napi,
5283                                        i40e_napi_poll, vsi->work_limit);
5284         }
5285
5286         return 0;
5287 }
5288
5289 /**
5290  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
5291  * @pf: board private structure to initialize
5292  **/
5293 static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
5294 {
5295         int err = 0;
5296
5297         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
5298                 err = i40e_init_msix(pf);
5299                 if (err) {
5300                         pf->flags &= ~(I40E_FLAG_RSS_ENABLED       |
5301                                         I40E_FLAG_MQ_ENABLED       |
5302                                         I40E_FLAG_DCB_ENABLED      |
5303                                         I40E_FLAG_SRIOV_ENABLED    |
5304                                         I40E_FLAG_FDIR_ENABLED     |
5305                                         I40E_FLAG_FDIR_ATR_ENABLED |
5306                                         I40E_FLAG_VMDQ_ENABLED);
5307
5308                         /* rework the queue expectations without MSIX */
5309                         i40e_determine_queue_usage(pf);
5310                 }
5311         }
5312
5313         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
5314             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
5315                 err = pci_enable_msi(pf->pdev);
5316                 if (err) {
5317                         dev_info(&pf->pdev->dev,
5318                                  "MSI init failed (%d), trying legacy.\n", err);
5319                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
5320                 }
5321         }
5322
5323         /* track first vector for misc interrupts */
5324         err = i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT-1);
5325 }
5326
5327 /**
5328  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
5329  * @pf: board private structure
5330  *
5331  * This sets up the handler for MSIX 0, which is used to manage the
5332  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
5333  * when in MSI or Legacy interrupt mode.
5334  **/
5335 static int i40e_setup_misc_vector(struct i40e_pf *pf)
5336 {
5337         struct i40e_hw *hw = &pf->hw;
5338         int err = 0;
5339
5340         /* Only request the irq if this is the first time through, and
5341          * not when we're rebuilding after a Reset
5342          */
5343         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
5344                 err = request_irq(pf->msix_entries[0].vector,
5345                                   i40e_intr, 0, pf->misc_int_name, pf);
5346                 if (err) {
5347                         dev_info(&pf->pdev->dev,
5348                                  "request_irq for msix_misc failed: %d\n", err);
5349                         return -EFAULT;
5350                 }
5351         }
5352
5353         i40e_enable_misc_int_causes(hw);
5354
5355         /* associate no queues to the misc vector */
5356         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
5357         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
5358
5359         i40e_flush(hw);
5360
5361         i40e_irq_dynamic_enable_icr0(pf);
5362
5363         return err;
5364 }
5365
5366 /**
5367  * i40e_config_rss - Prepare for RSS if used
5368  * @pf: board private structure
5369  **/
5370 static int i40e_config_rss(struct i40e_pf *pf)
5371 {
5372         struct i40e_hw *hw = &pf->hw;
5373         u32 lut = 0;
5374         int i, j;
5375         u64 hena;
5376         /* Set of random keys generated using kernel random number generator */
5377         static const u32 seed[I40E_PFQF_HKEY_MAX_INDEX + 1] = {0x41b01687,
5378                                 0x183cfd8c, 0xce880440, 0x580cbc3c, 0x35897377,
5379                                 0x328b25e1, 0x4fa98922, 0xb7d90c14, 0xd5bad70d,
5380                                 0xcd15a2c1, 0xe8580225, 0x4a1e9d11, 0xfe5731be};
5381
5382         /* Fill out hash function seed */
5383         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
5384                 wr32(hw, I40E_PFQF_HKEY(i), seed[i]);
5385
5386         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
5387         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
5388                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
5389         hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_UDP) |
5390                 ((u64)1 << I40E_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP) |
5391                 ((u64)1 << I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP) |
5392                 ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_TCP) |
5393                 ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_TCP) |
5394                 ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_UDP) |
5395                 ((u64)1 << I40E_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP) |
5396                 ((u64)1 << I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP) |
5397                 ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV4)|
5398                 ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV6);
5399         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
5400         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
5401
5402         /* Populate the LUT with max no. of queues in round robin fashion */
5403         for (i = 0, j = 0; i < pf->hw.func_caps.rss_table_size; i++, j++) {
5404
5405                 /* The assumption is that lan qp count will be the highest
5406                  * qp count for any PF VSI that needs RSS.
5407                  * If multiple VSIs need RSS support, all the qp counts
5408                  * for those VSIs should be a power of 2 for RSS to work.
5409                  * If LAN VSI is the only consumer for RSS then this requirement
5410                  * is not necessary.
5411                  */
5412                 if (j == pf->rss_size)
5413                         j = 0;
5414                 /* lut = 4-byte sliding window of 4 lut entries */
5415                 lut = (lut << 8) | (j &
5416                          ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
5417                 /* On i = 3, we have 4 entries in lut; write to the register */
5418                 if ((i & 3) == 3)
5419                         wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
5420         }
5421         i40e_flush(hw);
5422
5423         return 0;
5424 }
5425
5426 /**
5427  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
5428  * @pf: board private structure to initialize
5429  *
5430  * i40e_sw_init initializes the Adapter private data structure.
5431  * Fields are initialized based on PCI device information and
5432  * OS network device settings (MTU size).
5433  **/
5434 static int i40e_sw_init(struct i40e_pf *pf)
5435 {
5436         int err = 0;
5437         int size;
5438
5439         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
5440                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
5441         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
5442                 if (I40E_DEBUG_USER & debug)
5443                         pf->hw.debug_mask = debug;
5444                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
5445                                                 I40E_DEFAULT_MSG_ENABLE);
5446         }
5447
5448         /* Set default capability flags */
5449         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
5450                     I40E_FLAG_MSI_ENABLED     |
5451                     I40E_FLAG_MSIX_ENABLED    |
5452                     I40E_FLAG_RX_PS_ENABLED   |
5453                     I40E_FLAG_MQ_ENABLED      |
5454                     I40E_FLAG_RX_1BUF_ENABLED;
5455
5456         pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
5457         if (pf->hw.func_caps.rss) {
5458                 pf->flags |= I40E_FLAG_RSS_ENABLED;
5459                 pf->rss_size = min_t(int, pf->rss_size_max,
5460                                      nr_cpus_node(numa_node_id()));
5461         } else {
5462                 pf->rss_size = 1;
5463         }
5464
5465         if (pf->hw.func_caps.dcb)
5466                 pf->num_tc_qps = I40E_DEFAULT_QUEUES_PER_TC;
5467         else
5468                 pf->num_tc_qps = 0;
5469
5470         if (pf->hw.func_caps.fd) {
5471                 /* FW/NVM is not yet fixed in this regard */
5472                 if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
5473                     (pf->hw.func_caps.fd_filters_best_effort > 0)) {
5474                         pf->flags |= I40E_FLAG_FDIR_ATR_ENABLED;
5475                         dev_info(&pf->pdev->dev,
5476                                  "Flow Director ATR mode Enabled\n");
5477                         pf->flags |= I40E_FLAG_FDIR_ENABLED;
5478                         dev_info(&pf->pdev->dev,
5479                                  "Flow Director Side Band mode Enabled\n");
5480                         pf->fdir_pf_filter_count =
5481                                          pf->hw.func_caps.fd_filters_guaranteed;
5482                 }
5483         } else {
5484                 pf->fdir_pf_filter_count = 0;
5485         }
5486
5487         if (pf->hw.func_caps.vmdq) {
5488                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
5489                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
5490                 pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
5491         }
5492
5493         /* MFP mode enabled */
5494         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
5495                 pf->flags |= I40E_FLAG_MFP_ENABLED;
5496                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
5497         }
5498
5499 #ifdef CONFIG_PCI_IOV
5500         if (pf->hw.func_caps.num_vfs) {
5501                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
5502                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
5503                 pf->num_req_vfs = min_t(int,
5504                                         pf->hw.func_caps.num_vfs,
5505                                         I40E_MAX_VF_COUNT);
5506         }
5507 #endif /* CONFIG_PCI_IOV */
5508         pf->eeprom_version = 0xDEAD;
5509         pf->lan_veb = I40E_NO_VEB;
5510         pf->lan_vsi = I40E_NO_VSI;
5511
5512         /* set up queue assignment tracking */
5513         size = sizeof(struct i40e_lump_tracking)
5514                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
5515         pf->qp_pile = kzalloc(size, GFP_KERNEL);
5516         if (!pf->qp_pile) {
5517                 err = -ENOMEM;
5518                 goto sw_init_done;
5519         }
5520         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
5521         pf->qp_pile->search_hint = 0;
5522
5523         /* set up vector assignment tracking */
5524         size = sizeof(struct i40e_lump_tracking)
5525                 + (sizeof(u16) * pf->hw.func_caps.num_msix_vectors);
5526         pf->irq_pile = kzalloc(size, GFP_KERNEL);
5527         if (!pf->irq_pile) {
5528                 kfree(pf->qp_pile);
5529                 err = -ENOMEM;
5530                 goto sw_init_done;
5531         }
5532         pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors;
5533         pf->irq_pile->search_hint = 0;
5534
5535         mutex_init(&pf->switch_mutex);
5536
5537 sw_init_done:
5538         return err;
5539 }
5540
5541 /**
5542  * i40e_set_features - set the netdev feature flags
5543  * @netdev: ptr to the netdev being adjusted
5544  * @features: the feature set that the stack is suggesting
5545  **/
5546 static int i40e_set_features(struct net_device *netdev,
5547                              netdev_features_t features)
5548 {
5549         struct i40e_netdev_priv *np = netdev_priv(netdev);
5550         struct i40e_vsi *vsi = np->vsi;
5551
5552         if (features & NETIF_F_HW_VLAN_CTAG_RX)
5553                 i40e_vlan_stripping_enable(vsi);
5554         else
5555                 i40e_vlan_stripping_disable(vsi);
5556
5557         return 0;
5558 }
5559
5560 static const struct net_device_ops i40e_netdev_ops = {
5561         .ndo_open               = i40e_open,
5562         .ndo_stop               = i40e_close,
5563         .ndo_start_xmit         = i40e_lan_xmit_frame,
5564         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
5565         .ndo_set_rx_mode        = i40e_set_rx_mode,
5566         .ndo_validate_addr      = eth_validate_addr,
5567         .ndo_set_mac_address    = i40e_set_mac,
5568         .ndo_change_mtu         = i40e_change_mtu,
5569         .ndo_tx_timeout         = i40e_tx_timeout,
5570         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
5571         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
5572 #ifdef CONFIG_NET_POLL_CONTROLLER
5573         .ndo_poll_controller    = i40e_netpoll,
5574 #endif
5575         .ndo_setup_tc           = i40e_setup_tc,
5576         .ndo_set_features       = i40e_set_features,
5577         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
5578         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
5579         .ndo_set_vf_tx_rate     = i40e_ndo_set_vf_bw,
5580         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
5581 };
5582
5583 /**
5584  * i40e_config_netdev - Setup the netdev flags
5585  * @vsi: the VSI being configured
5586  *
5587  * Returns 0 on success, negative value on failure
5588  **/
5589 static int i40e_config_netdev(struct i40e_vsi *vsi)
5590 {
5591         struct i40e_pf *pf = vsi->back;
5592         struct i40e_hw *hw = &pf->hw;
5593         struct i40e_netdev_priv *np;
5594         struct net_device *netdev;
5595         u8 mac_addr[ETH_ALEN];
5596         int etherdev_size;
5597
5598         etherdev_size = sizeof(struct i40e_netdev_priv);
5599         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
5600         if (!netdev)
5601                 return -ENOMEM;
5602
5603         vsi->netdev = netdev;
5604         np = netdev_priv(netdev);
5605         np->vsi = vsi;
5606
5607         netdev->hw_enc_features = NETIF_F_IP_CSUM        |
5608                                   NETIF_F_GSO_UDP_TUNNEL |
5609                                   NETIF_F_TSO            |
5610                                   NETIF_F_SG;
5611
5612         netdev->features = NETIF_F_SG                  |
5613                            NETIF_F_IP_CSUM             |
5614                            NETIF_F_SCTP_CSUM           |
5615                            NETIF_F_HIGHDMA             |
5616                            NETIF_F_GSO_UDP_TUNNEL      |
5617                            NETIF_F_HW_VLAN_CTAG_TX     |
5618                            NETIF_F_HW_VLAN_CTAG_RX     |
5619                            NETIF_F_HW_VLAN_CTAG_FILTER |
5620                            NETIF_F_IPV6_CSUM           |
5621                            NETIF_F_TSO                 |
5622                            NETIF_F_TSO6                |
5623                            NETIF_F_RXCSUM              |
5624                            NETIF_F_RXHASH              |
5625                            0;
5626
5627         /* copy netdev features into list of user selectable features */
5628         netdev->hw_features |= netdev->features;
5629
5630         if (vsi->type == I40E_VSI_MAIN) {
5631                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
5632                 memcpy(mac_addr, hw->mac.perm_addr, ETH_ALEN);
5633         } else {
5634                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
5635                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
5636                          pf->vsi[pf->lan_vsi]->netdev->name);
5637                 random_ether_addr(mac_addr);
5638                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
5639         }
5640
5641         memcpy(netdev->dev_addr, mac_addr, ETH_ALEN);
5642         memcpy(netdev->perm_addr, mac_addr, ETH_ALEN);
5643         /* vlan gets same features (except vlan offload)
5644          * after any tweaks for specific VSI types
5645          */
5646         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
5647                                                      NETIF_F_HW_VLAN_CTAG_RX |
5648                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
5649         netdev->priv_flags |= IFF_UNICAST_FLT;
5650         netdev->priv_flags |= IFF_SUPP_NOFCS;
5651         /* Setup netdev TC information */
5652         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
5653
5654         netdev->netdev_ops = &i40e_netdev_ops;
5655         netdev->watchdog_timeo = 5 * HZ;
5656         i40e_set_ethtool_ops(netdev);
5657
5658         return 0;
5659 }
5660
5661 /**
5662  * i40e_vsi_delete - Delete a VSI from the switch
5663  * @vsi: the VSI being removed
5664  *
5665  * Returns 0 on success, negative value on failure
5666  **/
5667 static void i40e_vsi_delete(struct i40e_vsi *vsi)
5668 {
5669         /* remove default VSI is not allowed */
5670         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
5671                 return;
5672
5673         /* there is no HW VSI for FDIR */
5674         if (vsi->type == I40E_VSI_FDIR)
5675                 return;
5676
5677         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
5678         return;
5679 }
5680
5681 /**
5682  * i40e_add_vsi - Add a VSI to the switch
5683  * @vsi: the VSI being configured
5684  *
5685  * This initializes a VSI context depending on the VSI type to be added and
5686  * passes it down to the add_vsi aq command.
5687  **/
5688 static int i40e_add_vsi(struct i40e_vsi *vsi)
5689 {
5690         int ret = -ENODEV;
5691         struct i40e_mac_filter *f, *ftmp;
5692         struct i40e_pf *pf = vsi->back;
5693         struct i40e_hw *hw = &pf->hw;
5694         struct i40e_vsi_context ctxt;
5695         u8 enabled_tc = 0x1; /* TC0 enabled */
5696         int f_count = 0;
5697
5698         memset(&ctxt, 0, sizeof(ctxt));
5699         switch (vsi->type) {
5700         case I40E_VSI_MAIN:
5701                 /* The PF's main VSI is already setup as part of the
5702                  * device initialization, so we'll not bother with
5703                  * the add_vsi call, but we will retrieve the current
5704                  * VSI context.
5705                  */
5706                 ctxt.seid = pf->main_vsi_seid;
5707                 ctxt.pf_num = pf->hw.pf_id;
5708                 ctxt.vf_num = 0;
5709                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
5710                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
5711                 if (ret) {
5712                         dev_info(&pf->pdev->dev,
5713                                  "couldn't get pf vsi config, err %d, aq_err %d\n",
5714                                  ret, pf->hw.aq.asq_last_status);
5715                         return -ENOENT;
5716                 }
5717                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
5718                 vsi->info.valid_sections = 0;
5719
5720                 vsi->seid = ctxt.seid;
5721                 vsi->id = ctxt.vsi_number;
5722
5723                 enabled_tc = i40e_pf_get_tc_map(pf);
5724
5725                 /* MFP mode setup queue map and update VSI */
5726                 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5727                         memset(&ctxt, 0, sizeof(ctxt));
5728                         ctxt.seid = pf->main_vsi_seid;
5729                         ctxt.pf_num = pf->hw.pf_id;
5730                         ctxt.vf_num = 0;
5731                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
5732                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
5733                         if (ret) {
5734                                 dev_info(&pf->pdev->dev,
5735                                          "update vsi failed, aq_err=%d\n",
5736                                          pf->hw.aq.asq_last_status);
5737                                 ret = -ENOENT;
5738                                 goto err;
5739                         }
5740                         /* update the local VSI info queue map */
5741                         i40e_vsi_update_queue_map(vsi, &ctxt);
5742                         vsi->info.valid_sections = 0;
5743                 } else {
5744                         /* Default/Main VSI is only enabled for TC0
5745                          * reconfigure it to enable all TCs that are
5746                          * available on the port in SFP mode.
5747                          */
5748                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5749                         if (ret) {
5750                                 dev_info(&pf->pdev->dev,
5751                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
5752                                          enabled_tc, ret,
5753                                          pf->hw.aq.asq_last_status);
5754                                 ret = -ENOENT;
5755                         }
5756                 }
5757                 break;
5758
5759         case I40E_VSI_FDIR:
5760                 /* no queue mapping or actual HW VSI needed */
5761                 vsi->info.valid_sections = 0;
5762                 vsi->seid = 0;
5763                 vsi->id = 0;
5764                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
5765                 return 0;
5766                 break;
5767
5768         case I40E_VSI_VMDQ2:
5769                 ctxt.pf_num = hw->pf_id;
5770                 ctxt.vf_num = 0;
5771                 ctxt.uplink_seid = vsi->uplink_seid;
5772                 ctxt.connection_type = 0x1;     /* regular data port */
5773                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
5774
5775                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
5776
5777                 /* This VSI is connected to VEB so the switch_id
5778                  * should be set to zero by default.
5779                  */
5780                 ctxt.info.switch_id = 0;
5781                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_LOCAL_LB);
5782                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
5783
5784                 /* Setup the VSI tx/rx queue map for TC0 only for now */
5785                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
5786                 break;
5787
5788         case I40E_VSI_SRIOV:
5789                 ctxt.pf_num = hw->pf_id;
5790                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
5791                 ctxt.uplink_seid = vsi->uplink_seid;
5792                 ctxt.connection_type = 0x1;     /* regular data port */
5793                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
5794
5795                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
5796
5797                 /* This VSI is connected to VEB so the switch_id
5798                  * should be set to zero by default.
5799                  */
5800                 ctxt.info.switch_id = cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
5801
5802                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
5803                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
5804                 /* Setup the VSI tx/rx queue map for TC0 only for now */
5805                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
5806                 break;
5807
5808         default:
5809                 return -ENODEV;
5810         }
5811
5812         if (vsi->type != I40E_VSI_MAIN) {
5813                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
5814                 if (ret) {
5815                         dev_info(&vsi->back->pdev->dev,
5816                                  "add vsi failed, aq_err=%d\n",
5817                                  vsi->back->hw.aq.asq_last_status);
5818                         ret = -ENOENT;
5819                         goto err;
5820                 }
5821                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
5822                 vsi->info.valid_sections = 0;
5823                 vsi->seid = ctxt.seid;
5824                 vsi->id = ctxt.vsi_number;
5825         }
5826
5827         /* If macvlan filters already exist, force them to get loaded */
5828         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
5829                 f->changed = true;
5830                 f_count++;
5831         }
5832         if (f_count) {
5833                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
5834                 pf->flags |= I40E_FLAG_FILTER_SYNC;
5835         }
5836
5837         /* Update VSI BW information */
5838         ret = i40e_vsi_get_bw_info(vsi);
5839         if (ret) {
5840                 dev_info(&pf->pdev->dev,
5841                          "couldn't get vsi bw info, err %d, aq_err %d\n",
5842                          ret, pf->hw.aq.asq_last_status);
5843                 /* VSI is already added so not tearing that up */
5844                 ret = 0;
5845         }
5846
5847 err:
5848         return ret;
5849 }
5850
5851 /**
5852  * i40e_vsi_release - Delete a VSI and free its resources
5853  * @vsi: the VSI being removed
5854  *
5855  * Returns 0 on success or < 0 on error
5856  **/
5857 int i40e_vsi_release(struct i40e_vsi *vsi)
5858 {
5859         struct i40e_mac_filter *f, *ftmp;
5860         struct i40e_veb *veb = NULL;
5861         struct i40e_pf *pf;
5862         u16 uplink_seid;
5863         int i, n;
5864
5865         pf = vsi->back;
5866
5867         /* release of a VEB-owner or last VSI is not allowed */
5868         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
5869                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
5870                          vsi->seid, vsi->uplink_seid);
5871                 return -ENODEV;
5872         }
5873         if (vsi == pf->vsi[pf->lan_vsi] &&
5874             !test_bit(__I40E_DOWN, &pf->state)) {
5875                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
5876                 return -ENODEV;
5877         }
5878
5879         uplink_seid = vsi->uplink_seid;
5880         if (vsi->type != I40E_VSI_SRIOV) {
5881                 if (vsi->netdev_registered) {
5882                         vsi->netdev_registered = false;
5883                         if (vsi->netdev) {
5884                                 /* results in a call to i40e_close() */
5885                                 unregister_netdev(vsi->netdev);
5886                                 free_netdev(vsi->netdev);
5887                                 vsi->netdev = NULL;
5888                         }
5889                 } else {
5890                         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
5891                                 i40e_down(vsi);
5892                         i40e_vsi_free_irq(vsi);
5893                         i40e_vsi_free_tx_resources(vsi);
5894                         i40e_vsi_free_rx_resources(vsi);
5895                 }
5896                 i40e_vsi_disable_irq(vsi);
5897         }
5898
5899         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
5900                 i40e_del_filter(vsi, f->macaddr, f->vlan,
5901                                 f->is_vf, f->is_netdev);
5902         i40e_sync_vsi_filters(vsi);
5903
5904         i40e_vsi_delete(vsi);
5905         i40e_vsi_free_q_vectors(vsi);
5906         i40e_vsi_clear_rings(vsi);
5907         i40e_vsi_clear(vsi);
5908
5909         /* If this was the last thing on the VEB, except for the
5910          * controlling VSI, remove the VEB, which puts the controlling
5911          * VSI onto the next level down in the switch.
5912          *
5913          * Well, okay, there's one more exception here: don't remove
5914          * the orphan VEBs yet.  We'll wait for an explicit remove request
5915          * from up the network stack.
5916          */
5917         for (n = 0, i = 0; i < pf->hw.func_caps.num_vsis; i++) {
5918                 if (pf->vsi[i] &&
5919                     pf->vsi[i]->uplink_seid == uplink_seid &&
5920                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
5921                         n++;      /* count the VSIs */
5922                 }
5923         }
5924         for (i = 0; i < I40E_MAX_VEB; i++) {
5925                 if (!pf->veb[i])
5926                         continue;
5927                 if (pf->veb[i]->uplink_seid == uplink_seid)
5928                         n++;     /* count the VEBs */
5929                 if (pf->veb[i]->seid == uplink_seid)
5930                         veb = pf->veb[i];
5931         }
5932         if (n == 0 && veb && veb->uplink_seid != 0)
5933                 i40e_veb_release(veb);
5934
5935         return 0;
5936 }
5937
5938 /**
5939  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
5940  * @vsi: ptr to the VSI
5941  *
5942  * This should only be called after i40e_vsi_mem_alloc() which allocates the
5943  * corresponding SW VSI structure and initializes num_queue_pairs for the
5944  * newly allocated VSI.
5945  *
5946  * Returns 0 on success or negative on failure
5947  **/
5948 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
5949 {
5950         int ret = -ENOENT;
5951         struct i40e_pf *pf = vsi->back;
5952
5953         if (vsi->q_vectors) {
5954                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
5955                          vsi->seid);
5956                 return -EEXIST;
5957         }
5958
5959         if (vsi->base_vector) {
5960                 dev_info(&pf->pdev->dev,
5961                          "VSI %d has non-zero base vector %d\n",
5962                          vsi->seid, vsi->base_vector);
5963                 return -EEXIST;
5964         }
5965
5966         ret = i40e_alloc_q_vectors(vsi);
5967         if (ret) {
5968                 dev_info(&pf->pdev->dev,
5969                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
5970                          vsi->num_q_vectors, vsi->seid, ret);
5971                 vsi->num_q_vectors = 0;
5972                 goto vector_setup_out;
5973         }
5974
5975         vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
5976                                          vsi->num_q_vectors, vsi->idx);
5977         if (vsi->base_vector < 0) {
5978                 dev_info(&pf->pdev->dev,
5979                          "failed to get q tracking for VSI %d, err=%d\n",
5980                          vsi->seid, vsi->base_vector);
5981                 i40e_vsi_free_q_vectors(vsi);
5982                 ret = -ENOENT;
5983                 goto vector_setup_out;
5984         }
5985
5986 vector_setup_out:
5987         return ret;
5988 }
5989
5990 /**
5991  * i40e_vsi_setup - Set up a VSI by a given type
5992  * @pf: board private structure
5993  * @type: VSI type
5994  * @uplink_seid: the switch element to link to
5995  * @param1: usage depends upon VSI type. For VF types, indicates VF id
5996  *
5997  * This allocates the sw VSI structure and its queue resources, then add a VSI
5998  * to the identified VEB.
5999  *
6000  * Returns pointer to the successfully allocated and configure VSI sw struct on
6001  * success, otherwise returns NULL on failure.
6002  **/
6003 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
6004                                 u16 uplink_seid, u32 param1)
6005 {
6006         struct i40e_vsi *vsi = NULL;
6007         struct i40e_veb *veb = NULL;
6008         int ret, i;
6009         int v_idx;
6010
6011         /* The requested uplink_seid must be either
6012          *     - the PF's port seid
6013          *              no VEB is needed because this is the PF
6014          *              or this is a Flow Director special case VSI
6015          *     - seid of an existing VEB
6016          *     - seid of a VSI that owns an existing VEB
6017          *     - seid of a VSI that doesn't own a VEB
6018          *              a new VEB is created and the VSI becomes the owner
6019          *     - seid of the PF VSI, which is what creates the first VEB
6020          *              this is a special case of the previous
6021          *
6022          * Find which uplink_seid we were given and create a new VEB if needed
6023          */
6024         for (i = 0; i < I40E_MAX_VEB; i++) {
6025                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
6026                         veb = pf->veb[i];
6027                         break;
6028                 }
6029         }
6030
6031         if (!veb && uplink_seid != pf->mac_seid) {
6032
6033                 for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
6034                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
6035                                 vsi = pf->vsi[i];
6036                                 break;
6037                         }
6038                 }
6039                 if (!vsi) {
6040                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
6041                                  uplink_seid);
6042                         return NULL;
6043                 }
6044
6045                 if (vsi->uplink_seid == pf->mac_seid)
6046                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
6047                                              vsi->tc_config.enabled_tc);
6048                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
6049                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
6050                                              vsi->tc_config.enabled_tc);
6051
6052                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
6053                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
6054                                 veb = pf->veb[i];
6055                 }
6056                 if (!veb) {
6057                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
6058                         return NULL;
6059                 }
6060
6061                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
6062                 uplink_seid = veb->seid;
6063         }
6064
6065         /* get vsi sw struct */
6066         v_idx = i40e_vsi_mem_alloc(pf, type);
6067         if (v_idx < 0)
6068                 goto err_alloc;
6069         vsi = pf->vsi[v_idx];
6070         vsi->type = type;
6071         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
6072
6073         if (type == I40E_VSI_MAIN)
6074                 pf->lan_vsi = v_idx;
6075         else if (type == I40E_VSI_SRIOV)
6076                 vsi->vf_id = param1;
6077         /* assign it some queues */
6078         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
6079         if (ret < 0) {
6080                 dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
6081                          vsi->seid, ret);
6082                 goto err_vsi;
6083         }
6084         vsi->base_queue = ret;
6085
6086         /* get a VSI from the hardware */
6087         vsi->uplink_seid = uplink_seid;
6088         ret = i40e_add_vsi(vsi);
6089         if (ret)
6090                 goto err_vsi;
6091
6092         switch (vsi->type) {
6093         /* setup the netdev if needed */
6094         case I40E_VSI_MAIN:
6095         case I40E_VSI_VMDQ2:
6096                 ret = i40e_config_netdev(vsi);
6097                 if (ret)
6098                         goto err_netdev;
6099                 ret = register_netdev(vsi->netdev);
6100                 if (ret)
6101                         goto err_netdev;
6102                 vsi->netdev_registered = true;
6103                 netif_carrier_off(vsi->netdev);
6104                 /* fall through */
6105
6106         case I40E_VSI_FDIR:
6107                 /* set up vectors and rings if needed */
6108                 ret = i40e_vsi_setup_vectors(vsi);
6109                 if (ret)
6110                         goto err_msix;
6111
6112                 ret = i40e_alloc_rings(vsi);
6113                 if (ret)
6114                         goto err_rings;
6115
6116                 /* map all of the rings to the q_vectors */
6117                 i40e_vsi_map_rings_to_vectors(vsi);
6118
6119                 i40e_vsi_reset_stats(vsi);
6120                 break;
6121
6122         default:
6123                 /* no netdev or rings for the other VSI types */
6124                 break;
6125         }
6126
6127         return vsi;
6128
6129 err_rings:
6130         i40e_vsi_free_q_vectors(vsi);
6131 err_msix:
6132         if (vsi->netdev_registered) {
6133                 vsi->netdev_registered = false;
6134                 unregister_netdev(vsi->netdev);
6135                 free_netdev(vsi->netdev);
6136                 vsi->netdev = NULL;
6137         }
6138 err_netdev:
6139         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
6140 err_vsi:
6141         i40e_vsi_clear(vsi);
6142 err_alloc:
6143         return NULL;
6144 }
6145
6146 /**
6147  * i40e_veb_get_bw_info - Query VEB BW information
6148  * @veb: the veb to query
6149  *
6150  * Query the Tx scheduler BW configuration data for given VEB
6151  **/
6152 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
6153 {
6154         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
6155         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
6156         struct i40e_pf *pf = veb->pf;
6157         struct i40e_hw *hw = &pf->hw;
6158         u32 tc_bw_max;
6159         int ret = 0;
6160         int i;
6161
6162         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
6163                                                   &bw_data, NULL);
6164         if (ret) {
6165                 dev_info(&pf->pdev->dev,
6166                          "query veb bw config failed, aq_err=%d\n",
6167                          hw->aq.asq_last_status);
6168                 goto out;
6169         }
6170
6171         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
6172                                                    &ets_data, NULL);
6173         if (ret) {
6174                 dev_info(&pf->pdev->dev,
6175                          "query veb bw ets config failed, aq_err=%d\n",
6176                          hw->aq.asq_last_status);
6177                 goto out;
6178         }
6179
6180         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
6181         veb->bw_max_quanta = ets_data.tc_bw_max;
6182         veb->is_abs_credits = bw_data.absolute_credits_enable;
6183         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
6184                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
6185         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
6186                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
6187                 veb->bw_tc_limit_credits[i] =
6188                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
6189                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
6190         }
6191
6192 out:
6193         return ret;
6194 }
6195
6196 /**
6197  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
6198  * @pf: board private structure
6199  *
6200  * On error: returns error code (negative)
6201  * On success: returns vsi index in PF (positive)
6202  **/
6203 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
6204 {
6205         int ret = -ENOENT;
6206         struct i40e_veb *veb;
6207         int i;
6208
6209         /* Need to protect the allocation of switch elements at the PF level */
6210         mutex_lock(&pf->switch_mutex);
6211
6212         /* VEB list may be fragmented if VEB creation/destruction has
6213          * been happening.  We can afford to do a quick scan to look
6214          * for any free slots in the list.
6215          *
6216          * find next empty veb slot, looping back around if necessary
6217          */
6218         i = 0;
6219         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
6220                 i++;
6221         if (i >= I40E_MAX_VEB) {
6222                 ret = -ENOMEM;
6223                 goto err_alloc_veb;  /* out of VEB slots! */
6224         }
6225
6226         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
6227         if (!veb) {
6228                 ret = -ENOMEM;
6229                 goto err_alloc_veb;
6230         }
6231         veb->pf = pf;
6232         veb->idx = i;
6233         veb->enabled_tc = 1;
6234
6235         pf->veb[i] = veb;
6236         ret = i;
6237 err_alloc_veb:
6238         mutex_unlock(&pf->switch_mutex);
6239         return ret;
6240 }
6241
6242 /**
6243  * i40e_switch_branch_release - Delete a branch of the switch tree
6244  * @branch: where to start deleting
6245  *
6246  * This uses recursion to find the tips of the branch to be
6247  * removed, deleting until we get back to and can delete this VEB.
6248  **/
6249 static void i40e_switch_branch_release(struct i40e_veb *branch)
6250 {
6251         struct i40e_pf *pf = branch->pf;
6252         u16 branch_seid = branch->seid;
6253         u16 veb_idx = branch->idx;
6254         int i;
6255
6256         /* release any VEBs on this VEB - RECURSION */
6257         for (i = 0; i < I40E_MAX_VEB; i++) {
6258                 if (!pf->veb[i])
6259                         continue;
6260                 if (pf->veb[i]->uplink_seid == branch->seid)
6261                         i40e_switch_branch_release(pf->veb[i]);
6262         }
6263
6264         /* Release the VSIs on this VEB, but not the owner VSI.
6265          *
6266          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
6267          *       the VEB itself, so don't use (*branch) after this loop.
6268          */
6269         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
6270                 if (!pf->vsi[i])
6271                         continue;
6272                 if (pf->vsi[i]->uplink_seid == branch_seid &&
6273                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
6274                         i40e_vsi_release(pf->vsi[i]);
6275                 }
6276         }
6277
6278         /* There's one corner case where the VEB might not have been
6279          * removed, so double check it here and remove it if needed.
6280          * This case happens if the veb was created from the debugfs
6281          * commands and no VSIs were added to it.
6282          */
6283         if (pf->veb[veb_idx])
6284                 i40e_veb_release(pf->veb[veb_idx]);
6285 }
6286
6287 /**
6288  * i40e_veb_clear - remove veb struct
6289  * @veb: the veb to remove
6290  **/
6291 static void i40e_veb_clear(struct i40e_veb *veb)
6292 {
6293         if (!veb)
6294                 return;
6295
6296         if (veb->pf) {
6297                 struct i40e_pf *pf = veb->pf;
6298
6299                 mutex_lock(&pf->switch_mutex);
6300                 if (pf->veb[veb->idx] == veb)
6301                         pf->veb[veb->idx] = NULL;
6302                 mutex_unlock(&pf->switch_mutex);
6303         }
6304
6305         kfree(veb);
6306 }
6307
6308 /**
6309  * i40e_veb_release - Delete a VEB and free its resources
6310  * @veb: the VEB being removed
6311  **/
6312 void i40e_veb_release(struct i40e_veb *veb)
6313 {
6314         struct i40e_vsi *vsi = NULL;
6315         struct i40e_pf *pf;
6316         int i, n = 0;
6317
6318         pf = veb->pf;
6319
6320         /* find the remaining VSI and check for extras */
6321         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
6322                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
6323                         n++;
6324                         vsi = pf->vsi[i];
6325                 }
6326         }
6327         if (n != 1) {
6328                 dev_info(&pf->pdev->dev,
6329                          "can't remove VEB %d with %d VSIs left\n",
6330                          veb->seid, n);
6331                 return;
6332         }
6333
6334         /* move the remaining VSI to uplink veb */
6335         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
6336         if (veb->uplink_seid) {
6337                 vsi->uplink_seid = veb->uplink_seid;
6338                 if (veb->uplink_seid == pf->mac_seid)
6339                         vsi->veb_idx = I40E_NO_VEB;
6340                 else
6341                         vsi->veb_idx = veb->veb_idx;
6342         } else {
6343                 /* floating VEB */
6344                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6345                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
6346         }
6347
6348         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
6349         i40e_veb_clear(veb);
6350
6351         return;
6352 }
6353
6354 /**
6355  * i40e_add_veb - create the VEB in the switch
6356  * @veb: the VEB to be instantiated
6357  * @vsi: the controlling VSI
6358  **/
6359 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
6360 {
6361         bool is_default = (vsi->idx == vsi->back->lan_vsi);
6362         int ret;
6363
6364         /* get a VEB from the hardware */
6365         ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
6366                               veb->enabled_tc, is_default, &veb->seid, NULL);
6367         if (ret) {
6368                 dev_info(&veb->pf->pdev->dev,
6369                          "couldn't add VEB, err %d, aq_err %d\n",
6370                          ret, veb->pf->hw.aq.asq_last_status);
6371                 return -EPERM;
6372         }
6373
6374         /* get statistics counter */
6375         ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
6376                                          &veb->stats_idx, NULL, NULL, NULL);
6377         if (ret) {
6378                 dev_info(&veb->pf->pdev->dev,
6379                          "couldn't get VEB statistics idx, err %d, aq_err %d\n",
6380                          ret, veb->pf->hw.aq.asq_last_status);
6381                 return -EPERM;
6382         }
6383         ret = i40e_veb_get_bw_info(veb);
6384         if (ret) {
6385                 dev_info(&veb->pf->pdev->dev,
6386                          "couldn't get VEB bw info, err %d, aq_err %d\n",
6387                          ret, veb->pf->hw.aq.asq_last_status);
6388                 i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
6389                 return -ENOENT;
6390         }
6391
6392         vsi->uplink_seid = veb->seid;
6393         vsi->veb_idx = veb->idx;
6394         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
6395
6396         return 0;
6397 }
6398
6399 /**
6400  * i40e_veb_setup - Set up a VEB
6401  * @pf: board private structure
6402  * @flags: VEB setup flags
6403  * @uplink_seid: the switch element to link to
6404  * @vsi_seid: the initial VSI seid
6405  * @enabled_tc: Enabled TC bit-map
6406  *
6407  * This allocates the sw VEB structure and links it into the switch
6408  * It is possible and legal for this to be a duplicate of an already
6409  * existing VEB.  It is also possible for both uplink and vsi seids
6410  * to be zero, in order to create a floating VEB.
6411  *
6412  * Returns pointer to the successfully allocated VEB sw struct on
6413  * success, otherwise returns NULL on failure.
6414  **/
6415 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
6416                                 u16 uplink_seid, u16 vsi_seid,
6417                                 u8 enabled_tc)
6418 {
6419         struct i40e_veb *veb, *uplink_veb = NULL;
6420         int vsi_idx, veb_idx;
6421         int ret;
6422
6423         /* if one seid is 0, the other must be 0 to create a floating relay */
6424         if ((uplink_seid == 0 || vsi_seid == 0) &&
6425             (uplink_seid + vsi_seid != 0)) {
6426                 dev_info(&pf->pdev->dev,
6427                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
6428                          uplink_seid, vsi_seid);
6429                 return NULL;
6430         }
6431
6432         /* make sure there is such a vsi and uplink */
6433         for (vsi_idx = 0; vsi_idx < pf->hw.func_caps.num_vsis; vsi_idx++)
6434                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
6435                         break;
6436         if (vsi_idx >= pf->hw.func_caps.num_vsis && vsi_seid != 0) {
6437                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
6438                          vsi_seid);
6439                 return NULL;
6440         }
6441
6442         if (uplink_seid && uplink_seid != pf->mac_seid) {
6443                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6444                         if (pf->veb[veb_idx] &&
6445                             pf->veb[veb_idx]->seid == uplink_seid) {
6446                                 uplink_veb = pf->veb[veb_idx];
6447                                 break;
6448                         }
6449                 }
6450                 if (!uplink_veb) {
6451                         dev_info(&pf->pdev->dev,
6452                                  "uplink seid %d not found\n", uplink_seid);
6453                         return NULL;
6454                 }
6455         }
6456
6457         /* get veb sw struct */
6458         veb_idx = i40e_veb_mem_alloc(pf);
6459         if (veb_idx < 0)
6460                 goto err_alloc;
6461         veb = pf->veb[veb_idx];
6462         veb->flags = flags;
6463         veb->uplink_seid = uplink_seid;
6464         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
6465         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
6466
6467         /* create the VEB in the switch */
6468         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
6469         if (ret)
6470                 goto err_veb;
6471
6472         return veb;
6473
6474 err_veb:
6475         i40e_veb_clear(veb);
6476 err_alloc:
6477         return NULL;
6478 }
6479
6480 /**
6481  * i40e_setup_pf_switch_element - set pf vars based on switch type
6482  * @pf: board private structure
6483  * @ele: element we are building info from
6484  * @num_reported: total number of elements
6485  * @printconfig: should we print the contents
6486  *
6487  * helper function to assist in extracting a few useful SEID values.
6488  **/
6489 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
6490                                 struct i40e_aqc_switch_config_element_resp *ele,
6491                                 u16 num_reported, bool printconfig)
6492 {
6493         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
6494         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
6495         u8 element_type = ele->element_type;
6496         u16 seid = le16_to_cpu(ele->seid);
6497
6498         if (printconfig)
6499                 dev_info(&pf->pdev->dev,
6500                          "type=%d seid=%d uplink=%d downlink=%d\n",
6501                          element_type, seid, uplink_seid, downlink_seid);
6502
6503         switch (element_type) {
6504         case I40E_SWITCH_ELEMENT_TYPE_MAC:
6505                 pf->mac_seid = seid;
6506                 break;
6507         case I40E_SWITCH_ELEMENT_TYPE_VEB:
6508                 /* Main VEB? */
6509                 if (uplink_seid != pf->mac_seid)
6510                         break;
6511                 if (pf->lan_veb == I40E_NO_VEB) {
6512                         int v;
6513
6514                         /* find existing or else empty VEB */
6515                         for (v = 0; v < I40E_MAX_VEB; v++) {
6516                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
6517                                         pf->lan_veb = v;
6518                                         break;
6519                                 }
6520                         }
6521                         if (pf->lan_veb == I40E_NO_VEB) {
6522                                 v = i40e_veb_mem_alloc(pf);
6523                                 if (v < 0)
6524                                         break;
6525                                 pf->lan_veb = v;
6526                         }
6527                 }
6528
6529                 pf->veb[pf->lan_veb]->seid = seid;
6530                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
6531                 pf->veb[pf->lan_veb]->pf = pf;
6532                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
6533                 break;
6534         case I40E_SWITCH_ELEMENT_TYPE_VSI:
6535                 if (num_reported != 1)
6536                         break;
6537                 /* This is immediately after a reset so we can assume this is
6538                  * the PF's VSI
6539                  */
6540                 pf->mac_seid = uplink_seid;
6541                 pf->pf_seid = downlink_seid;
6542                 pf->main_vsi_seid = seid;
6543                 if (printconfig)
6544                         dev_info(&pf->pdev->dev,
6545                                  "pf_seid=%d main_vsi_seid=%d\n",
6546                                  pf->pf_seid, pf->main_vsi_seid);
6547                 break;
6548         case I40E_SWITCH_ELEMENT_TYPE_PF:
6549         case I40E_SWITCH_ELEMENT_TYPE_VF:
6550         case I40E_SWITCH_ELEMENT_TYPE_EMP:
6551         case I40E_SWITCH_ELEMENT_TYPE_BMC:
6552         case I40E_SWITCH_ELEMENT_TYPE_PE:
6553         case I40E_SWITCH_ELEMENT_TYPE_PA:
6554                 /* ignore these for now */
6555                 break;
6556         default:
6557                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
6558                          element_type, seid);
6559                 break;
6560         }
6561 }
6562
6563 /**
6564  * i40e_fetch_switch_configuration - Get switch config from firmware
6565  * @pf: board private structure
6566  * @printconfig: should we print the contents
6567  *
6568  * Get the current switch configuration from the device and
6569  * extract a few useful SEID values.
6570  **/
6571 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
6572 {
6573         struct i40e_aqc_get_switch_config_resp *sw_config;
6574         u16 next_seid = 0;
6575         int ret = 0;
6576         u8 *aq_buf;
6577         int i;
6578
6579         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
6580         if (!aq_buf)
6581                 return -ENOMEM;
6582
6583         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
6584         do {
6585                 u16 num_reported, num_total;
6586
6587                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
6588                                                 I40E_AQ_LARGE_BUF,
6589                                                 &next_seid, NULL);
6590                 if (ret) {
6591                         dev_info(&pf->pdev->dev,
6592                                  "get switch config failed %d aq_err=%x\n",
6593                                  ret, pf->hw.aq.asq_last_status);
6594                         kfree(aq_buf);
6595                         return -ENOENT;
6596                 }
6597
6598                 num_reported = le16_to_cpu(sw_config->header.num_reported);
6599                 num_total = le16_to_cpu(sw_config->header.num_total);
6600
6601                 if (printconfig)
6602                         dev_info(&pf->pdev->dev,
6603                                  "header: %d reported %d total\n",
6604                                  num_reported, num_total);
6605
6606                 if (num_reported) {
6607                         int sz = sizeof(*sw_config) * num_reported;
6608
6609                         kfree(pf->sw_config);
6610                         pf->sw_config = kzalloc(sz, GFP_KERNEL);
6611                         if (pf->sw_config)
6612                                 memcpy(pf->sw_config, sw_config, sz);
6613                 }
6614
6615                 for (i = 0; i < num_reported; i++) {
6616                         struct i40e_aqc_switch_config_element_resp *ele =
6617                                 &sw_config->element[i];
6618
6619                         i40e_setup_pf_switch_element(pf, ele, num_reported,
6620                                                      printconfig);
6621                 }
6622         } while (next_seid != 0);
6623
6624         kfree(aq_buf);
6625         return ret;
6626 }
6627
6628 /**
6629  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
6630  * @pf: board private structure
6631  *
6632  * Returns 0 on success, negative value on failure
6633  **/
6634 static int i40e_setup_pf_switch(struct i40e_pf *pf)
6635 {
6636         int ret;
6637
6638         /* find out what's out there already */
6639         ret = i40e_fetch_switch_configuration(pf, false);
6640         if (ret) {
6641                 dev_info(&pf->pdev->dev,
6642                          "couldn't fetch switch config, err %d, aq_err %d\n",
6643                          ret, pf->hw.aq.asq_last_status);
6644                 return ret;
6645         }
6646         i40e_pf_reset_stats(pf);
6647
6648         /* fdir VSI must happen first to be sure it gets queue 0, but only
6649          * if there is enough room for the fdir VSI
6650          */
6651         if (pf->num_lan_qps > 1)
6652                 i40e_fdir_setup(pf);
6653
6654         /* first time setup */
6655         if (pf->lan_vsi == I40E_NO_VSI) {
6656                 struct i40e_vsi *vsi = NULL;
6657                 u16 uplink_seid;
6658
6659                 /* Set up the PF VSI associated with the PF's main VSI
6660                  * that is already in the HW switch
6661                  */
6662                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
6663                         uplink_seid = pf->veb[pf->lan_veb]->seid;
6664                 else
6665                         uplink_seid = pf->mac_seid;
6666
6667                 vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
6668                 if (!vsi) {
6669                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
6670                         i40e_fdir_teardown(pf);
6671                         return -EAGAIN;
6672                 }
6673                 /* accommodate kcompat by copying the main VSI queue count
6674                  * into the pf, since this newer code pushes the pf queue
6675                  * info down a level into a VSI
6676                  */
6677                 pf->num_rx_queues = vsi->alloc_queue_pairs;
6678                 pf->num_tx_queues = vsi->alloc_queue_pairs;
6679         } else {
6680                 /* force a reset of TC and queue layout configurations */
6681                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
6682                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
6683                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
6684                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
6685         }
6686         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
6687
6688         /* Setup static PF queue filter control settings */
6689         ret = i40e_setup_pf_filter_control(pf);
6690         if (ret) {
6691                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
6692                          ret);
6693                 /* Failure here should not stop continuing other steps */
6694         }
6695
6696         /* enable RSS in the HW, even for only one queue, as the stack can use
6697          * the hash
6698          */
6699         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
6700                 i40e_config_rss(pf);
6701
6702         /* fill in link information and enable LSE reporting */
6703         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
6704         i40e_link_event(pf);
6705
6706         /* Initialize user-specifics link properties */
6707         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
6708                                   I40E_AQ_AN_COMPLETED) ? true : false);
6709         pf->hw.fc.requested_mode = I40E_FC_DEFAULT;
6710         if (pf->hw.phy.link_info.an_info &
6711            (I40E_AQ_LINK_PAUSE_TX | I40E_AQ_LINK_PAUSE_RX))
6712                 pf->hw.fc.current_mode = I40E_FC_FULL;
6713         else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_TX)
6714                 pf->hw.fc.current_mode = I40E_FC_TX_PAUSE;
6715         else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_RX)
6716                 pf->hw.fc.current_mode = I40E_FC_RX_PAUSE;
6717         else
6718                 pf->hw.fc.current_mode = I40E_FC_DEFAULT;
6719
6720         return ret;
6721 }
6722
6723 /**
6724  * i40e_set_rss_size - helper to set rss_size
6725  * @pf: board private structure
6726  * @queues_left: how many queues
6727  */
6728 static u16 i40e_set_rss_size(struct i40e_pf *pf, int queues_left)
6729 {
6730         int num_tc0;
6731
6732         num_tc0 = min_t(int, queues_left, pf->rss_size_max);
6733         num_tc0 = min_t(int, num_tc0, nr_cpus_node(numa_node_id()));
6734         num_tc0 = rounddown_pow_of_two(num_tc0);
6735
6736         return num_tc0;
6737 }
6738
6739 /**
6740  * i40e_determine_queue_usage - Work out queue distribution
6741  * @pf: board private structure
6742  **/
6743 static void i40e_determine_queue_usage(struct i40e_pf *pf)
6744 {
6745         int accum_tc_size;
6746         int queues_left;
6747
6748         pf->num_lan_qps = 0;
6749         pf->num_tc_qps = rounddown_pow_of_two(pf->num_tc_qps);
6750         accum_tc_size = (I40E_MAX_TRAFFIC_CLASS - 1) * pf->num_tc_qps;
6751
6752         /* Find the max queues to be put into basic use.  We'll always be
6753          * using TC0, whether or not DCB is running, and TC0 will get the
6754          * big RSS set.
6755          */
6756         queues_left = pf->hw.func_caps.num_tx_qp;
6757
6758         if   (!((pf->flags & I40E_FLAG_MSIX_ENABLED)             &&
6759                 (pf->flags & I40E_FLAG_MQ_ENABLED))              ||
6760                 !(pf->flags & (I40E_FLAG_RSS_ENABLED |
6761                 I40E_FLAG_FDIR_ENABLED | I40E_FLAG_DCB_ENABLED)) ||
6762                 (queues_left == 1)) {
6763
6764                 /* one qp for PF, no queues for anything else */
6765                 queues_left = 0;
6766                 pf->rss_size = pf->num_lan_qps = 1;
6767
6768                 /* make sure all the fancies are disabled */
6769                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED       |
6770                                 I40E_FLAG_MQ_ENABLED       |
6771                                 I40E_FLAG_FDIR_ENABLED     |
6772                                 I40E_FLAG_FDIR_ATR_ENABLED |
6773                                 I40E_FLAG_DCB_ENABLED      |
6774                                 I40E_FLAG_SRIOV_ENABLED    |
6775                                 I40E_FLAG_VMDQ_ENABLED);
6776
6777         } else if (pf->flags & I40E_FLAG_RSS_ENABLED      &&
6778                    !(pf->flags & I40E_FLAG_FDIR_ENABLED)  &&
6779                    !(pf->flags & I40E_FLAG_DCB_ENABLED)) {
6780
6781                 pf->rss_size = i40e_set_rss_size(pf, queues_left);
6782
6783                 queues_left -= pf->rss_size;
6784                 pf->num_lan_qps = pf->rss_size;
6785
6786         } else if (pf->flags & I40E_FLAG_RSS_ENABLED      &&
6787                    !(pf->flags & I40E_FLAG_FDIR_ENABLED)  &&
6788                    (pf->flags & I40E_FLAG_DCB_ENABLED)) {
6789
6790                 /* save num_tc_qps queues for TCs 1 thru 7 and the rest
6791                  * are set up for RSS in TC0
6792                  */
6793                 queues_left -= accum_tc_size;
6794
6795                 pf->rss_size = i40e_set_rss_size(pf, queues_left);
6796
6797                 queues_left -= pf->rss_size;
6798                 if (queues_left < 0) {
6799                         dev_info(&pf->pdev->dev, "not enough queues for DCB\n");
6800                         return;
6801                 }
6802
6803                 pf->num_lan_qps = pf->rss_size + accum_tc_size;
6804
6805         } else if (pf->flags & I40E_FLAG_RSS_ENABLED   &&
6806                   (pf->flags & I40E_FLAG_FDIR_ENABLED) &&
6807                   !(pf->flags & I40E_FLAG_DCB_ENABLED)) {
6808
6809                 queues_left -= 1; /* save 1 queue for FD */
6810
6811                 pf->rss_size = i40e_set_rss_size(pf, queues_left);
6812
6813                 queues_left -= pf->rss_size;
6814                 if (queues_left < 0) {
6815                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director\n");
6816                         return;
6817                 }
6818
6819                 pf->num_lan_qps = pf->rss_size;
6820
6821         } else if (pf->flags & I40E_FLAG_RSS_ENABLED   &&
6822                   (pf->flags & I40E_FLAG_FDIR_ENABLED) &&
6823                   (pf->flags & I40E_FLAG_DCB_ENABLED)) {
6824
6825                 /* save 1 queue for TCs 1 thru 7,
6826                  * 1 queue for flow director,
6827                  * and the rest are set up for RSS in TC0
6828                  */
6829                 queues_left -= 1;
6830                 queues_left -= accum_tc_size;
6831
6832                 pf->rss_size = i40e_set_rss_size(pf, queues_left);
6833                 queues_left -= pf->rss_size;
6834                 if (queues_left < 0) {
6835                         dev_info(&pf->pdev->dev, "not enough queues for DCB and Flow Director\n");
6836                         return;
6837                 }
6838
6839                 pf->num_lan_qps = pf->rss_size + accum_tc_size;
6840
6841         } else {
6842                 dev_info(&pf->pdev->dev,
6843                          "Invalid configuration, flags=0x%08llx\n", pf->flags);
6844                 return;
6845         }
6846
6847         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
6848             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
6849                 pf->num_req_vfs = min_t(int, pf->num_req_vfs, (queues_left /
6850                                                                pf->num_vf_qps));
6851                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
6852         }
6853
6854         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
6855             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
6856                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
6857                                           (queues_left / pf->num_vmdq_qps));
6858                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
6859         }
6860
6861         return;
6862 }
6863
6864 /**
6865  * i40e_setup_pf_filter_control - Setup PF static filter control
6866  * @pf: PF to be setup
6867  *
6868  * i40e_setup_pf_filter_control sets up a pf's initial filter control
6869  * settings. If PE/FCoE are enabled then it will also set the per PF
6870  * based filter sizes required for them. It also enables Flow director,
6871  * ethertype and macvlan type filter settings for the pf.
6872  *
6873  * Returns 0 on success, negative on failure
6874  **/
6875 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
6876 {
6877         struct i40e_filter_control_settings *settings = &pf->filter_settings;
6878
6879         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
6880
6881         /* Flow Director is enabled */
6882         if (pf->flags & (I40E_FLAG_FDIR_ENABLED | I40E_FLAG_FDIR_ATR_ENABLED))
6883                 settings->enable_fdir = true;
6884
6885         /* Ethtype and MACVLAN filters enabled for PF */
6886         settings->enable_ethtype = true;
6887         settings->enable_macvlan = true;
6888
6889         if (i40e_set_filter_control(&pf->hw, settings))
6890                 return -ENOENT;
6891
6892         return 0;
6893 }
6894
6895 /**
6896  * i40e_probe - Device initialization routine
6897  * @pdev: PCI device information struct
6898  * @ent: entry in i40e_pci_tbl
6899  *
6900  * i40e_probe initializes a pf identified by a pci_dev structure.
6901  * The OS initialization, configuring of the pf private structure,
6902  * and a hardware reset occur.
6903  *
6904  * Returns 0 on success, negative on failure
6905  **/
6906 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
6907 {
6908         struct i40e_driver_version dv;
6909         struct i40e_pf *pf;
6910         struct i40e_hw *hw;
6911         int err = 0;
6912         u32 len;
6913
6914         err = pci_enable_device_mem(pdev);
6915         if (err)
6916                 return err;
6917
6918         /* set up for high or low dma */
6919         if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) {
6920                 /* coherent mask for the same size will always succeed if
6921                  * dma_set_mask does
6922                  */
6923                 dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
6924         } else if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
6925                 dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
6926         } else {
6927                 dev_err(&pdev->dev, "DMA configuration failed: %d\n", err);
6928                 err = -EIO;
6929                 goto err_dma;
6930         }
6931
6932         /* set up pci connections */
6933         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
6934                                            IORESOURCE_MEM), i40e_driver_name);
6935         if (err) {
6936                 dev_info(&pdev->dev,
6937                          "pci_request_selected_regions failed %d\n", err);
6938                 goto err_pci_reg;
6939         }
6940
6941         pci_enable_pcie_error_reporting(pdev);
6942         pci_set_master(pdev);
6943
6944         /* Now that we have a PCI connection, we need to do the
6945          * low level device setup.  This is primarily setting up
6946          * the Admin Queue structures and then querying for the
6947          * device's current profile information.
6948          */
6949         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
6950         if (!pf) {
6951                 err = -ENOMEM;
6952                 goto err_pf_alloc;
6953         }
6954         pf->next_vsi = 0;
6955         pf->pdev = pdev;
6956         set_bit(__I40E_DOWN, &pf->state);
6957
6958         hw = &pf->hw;
6959         hw->back = pf;
6960         hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
6961                               pci_resource_len(pdev, 0));
6962         if (!hw->hw_addr) {
6963                 err = -EIO;
6964                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
6965                          (unsigned int)pci_resource_start(pdev, 0),
6966                          (unsigned int)pci_resource_len(pdev, 0), err);
6967                 goto err_ioremap;
6968         }
6969         hw->vendor_id = pdev->vendor;
6970         hw->device_id = pdev->device;
6971         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
6972         hw->subsystem_vendor_id = pdev->subsystem_vendor;
6973         hw->subsystem_device_id = pdev->subsystem_device;
6974         hw->bus.device = PCI_SLOT(pdev->devfn);
6975         hw->bus.func = PCI_FUNC(pdev->devfn);
6976
6977         /* Reset here to make sure all is clean and to define PF 'n' */
6978         err = i40e_pf_reset(hw);
6979         if (err) {
6980                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
6981                 goto err_pf_reset;
6982         }
6983         pf->pfr_count++;
6984
6985         hw->aq.num_arq_entries = I40E_AQ_LEN;
6986         hw->aq.num_asq_entries = I40E_AQ_LEN;
6987         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
6988         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
6989         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
6990         snprintf(pf->misc_int_name, sizeof(pf->misc_int_name) - 1,
6991                  "%s-pf%d:misc",
6992                  dev_driver_string(&pf->pdev->dev), pf->hw.pf_id);
6993
6994         err = i40e_init_shared_code(hw);
6995         if (err) {
6996                 dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
6997                 goto err_pf_reset;
6998         }
6999
7000         err = i40e_init_adminq(hw);
7001         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
7002         if (err) {
7003                 dev_info(&pdev->dev,
7004                          "init_adminq failed: %d expecting API %02x.%02x\n",
7005                          err,
7006                          I40E_FW_API_VERSION_MAJOR, I40E_FW_API_VERSION_MINOR);
7007                 goto err_pf_reset;
7008         }
7009
7010         err = i40e_get_capabilities(pf);
7011         if (err)
7012                 goto err_adminq_setup;
7013
7014         err = i40e_sw_init(pf);
7015         if (err) {
7016                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
7017                 goto err_sw_init;
7018         }
7019
7020         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
7021                                 hw->func_caps.num_rx_qp,
7022                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
7023         if (err) {
7024                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
7025                 goto err_init_lan_hmc;
7026         }
7027
7028         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
7029         if (err) {
7030                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
7031                 err = -ENOENT;
7032                 goto err_configure_lan_hmc;
7033         }
7034
7035         i40e_get_mac_addr(hw, hw->mac.addr);
7036         if (i40e_validate_mac_addr(hw->mac.addr)) {
7037                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
7038                 err = -EIO;
7039                 goto err_mac_addr;
7040         }
7041         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
7042         memcpy(hw->mac.perm_addr, hw->mac.addr, ETH_ALEN);
7043
7044         pci_set_drvdata(pdev, pf);
7045         pci_save_state(pdev);
7046
7047         /* set up periodic task facility */
7048         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
7049         pf->service_timer_period = HZ;
7050
7051         INIT_WORK(&pf->service_task, i40e_service_task);
7052         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
7053         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
7054         pf->link_check_timeout = jiffies;
7055
7056         /* set up the main switch operations */
7057         i40e_determine_queue_usage(pf);
7058         i40e_init_interrupt_scheme(pf);
7059
7060         /* Set up the *vsi struct based on the number of VSIs in the HW,
7061          * and set up our local tracking of the MAIN PF vsi.
7062          */
7063         len = sizeof(struct i40e_vsi *) * pf->hw.func_caps.num_vsis;
7064         pf->vsi = kzalloc(len, GFP_KERNEL);
7065         if (!pf->vsi)
7066                 goto err_switch_setup;
7067
7068         err = i40e_setup_pf_switch(pf);
7069         if (err) {
7070                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
7071                 goto err_vsis;
7072         }
7073
7074         /* The main driver is (mostly) up and happy. We need to set this state
7075          * before setting up the misc vector or we get a race and the vector
7076          * ends up disabled forever.
7077          */
7078         clear_bit(__I40E_DOWN, &pf->state);
7079
7080         /* In case of MSIX we are going to setup the misc vector right here
7081          * to handle admin queue events etc. In case of legacy and MSI
7082          * the misc functionality and queue processing is combined in
7083          * the same vector and that gets setup at open.
7084          */
7085         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7086                 err = i40e_setup_misc_vector(pf);
7087                 if (err) {
7088                         dev_info(&pdev->dev,
7089                                  "setup of misc vector failed: %d\n", err);
7090                         goto err_vsis;
7091                 }
7092         }
7093
7094         /* prep for VF support */
7095         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
7096             (pf->flags & I40E_FLAG_MSIX_ENABLED)) {
7097                 u32 val;
7098
7099                 /* disable link interrupts for VFs */
7100                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
7101                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
7102                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
7103                 i40e_flush(hw);
7104         }
7105
7106         i40e_dbg_pf_init(pf);
7107
7108         /* tell the firmware that we're starting */
7109         dv.major_version = DRV_VERSION_MAJOR;
7110         dv.minor_version = DRV_VERSION_MINOR;
7111         dv.build_version = DRV_VERSION_BUILD;
7112         dv.subbuild_version = 0;
7113         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
7114
7115         /* since everything's happy, start the service_task timer */
7116         mod_timer(&pf->service_timer,
7117                   round_jiffies(jiffies + pf->service_timer_period));
7118
7119         return 0;
7120
7121         /* Unwind what we've done if something failed in the setup */
7122 err_vsis:
7123         set_bit(__I40E_DOWN, &pf->state);
7124 err_switch_setup:
7125         i40e_clear_interrupt_scheme(pf);
7126         kfree(pf->vsi);
7127         del_timer_sync(&pf->service_timer);
7128 err_mac_addr:
7129 err_configure_lan_hmc:
7130         (void)i40e_shutdown_lan_hmc(hw);
7131 err_init_lan_hmc:
7132         kfree(pf->qp_pile);
7133         kfree(pf->irq_pile);
7134 err_sw_init:
7135 err_adminq_setup:
7136         (void)i40e_shutdown_adminq(hw);
7137 err_pf_reset:
7138         iounmap(hw->hw_addr);
7139 err_ioremap:
7140         kfree(pf);
7141 err_pf_alloc:
7142         pci_disable_pcie_error_reporting(pdev);
7143         pci_release_selected_regions(pdev,
7144                                      pci_select_bars(pdev, IORESOURCE_MEM));
7145 err_pci_reg:
7146 err_dma:
7147         pci_disable_device(pdev);
7148         return err;
7149 }
7150
7151 /**
7152  * i40e_remove - Device removal routine
7153  * @pdev: PCI device information struct
7154  *
7155  * i40e_remove is called by the PCI subsystem to alert the driver
7156  * that is should release a PCI device.  This could be caused by a
7157  * Hot-Plug event, or because the driver is going to be removed from
7158  * memory.
7159  **/
7160 static void i40e_remove(struct pci_dev *pdev)
7161 {
7162         struct i40e_pf *pf = pci_get_drvdata(pdev);
7163         i40e_status ret_code;
7164         u32 reg;
7165         int i;
7166
7167         i40e_dbg_pf_exit(pf);
7168
7169         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
7170                 i40e_free_vfs(pf);
7171                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
7172         }
7173
7174         /* no more scheduling of any task */
7175         set_bit(__I40E_DOWN, &pf->state);
7176         del_timer_sync(&pf->service_timer);
7177         cancel_work_sync(&pf->service_task);
7178
7179         i40e_fdir_teardown(pf);
7180
7181         /* If there is a switch structure or any orphans, remove them.
7182          * This will leave only the PF's VSI remaining.
7183          */
7184         for (i = 0; i < I40E_MAX_VEB; i++) {
7185                 if (!pf->veb[i])
7186                         continue;
7187
7188                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
7189                     pf->veb[i]->uplink_seid == 0)
7190                         i40e_switch_branch_release(pf->veb[i]);
7191         }
7192
7193         /* Now we can shutdown the PF's VSI, just before we kill
7194          * adminq and hmc.
7195          */
7196         if (pf->vsi[pf->lan_vsi])
7197                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
7198
7199         i40e_stop_misc_vector(pf);
7200         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7201                 synchronize_irq(pf->msix_entries[0].vector);
7202                 free_irq(pf->msix_entries[0].vector, pf);
7203         }
7204
7205         /* shutdown and destroy the HMC */
7206         ret_code = i40e_shutdown_lan_hmc(&pf->hw);
7207         if (ret_code)
7208                 dev_warn(&pdev->dev,
7209                          "Failed to destroy the HMC resources: %d\n", ret_code);
7210
7211         /* shutdown the adminq */
7212         i40e_aq_queue_shutdown(&pf->hw, true);
7213         ret_code = i40e_shutdown_adminq(&pf->hw);
7214         if (ret_code)
7215                 dev_warn(&pdev->dev,
7216                          "Failed to destroy the Admin Queue resources: %d\n",
7217                          ret_code);
7218
7219         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
7220         i40e_clear_interrupt_scheme(pf);
7221         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7222                 if (pf->vsi[i]) {
7223                         i40e_vsi_clear_rings(pf->vsi[i]);
7224                         i40e_vsi_clear(pf->vsi[i]);
7225                         pf->vsi[i] = NULL;
7226                 }
7227         }
7228
7229         for (i = 0; i < I40E_MAX_VEB; i++) {
7230                 kfree(pf->veb[i]);
7231                 pf->veb[i] = NULL;
7232         }
7233
7234         kfree(pf->qp_pile);
7235         kfree(pf->irq_pile);
7236         kfree(pf->sw_config);
7237         kfree(pf->vsi);
7238
7239         /* force a PF reset to clean anything leftover */
7240         reg = rd32(&pf->hw, I40E_PFGEN_CTRL);
7241         wr32(&pf->hw, I40E_PFGEN_CTRL, (reg | I40E_PFGEN_CTRL_PFSWR_MASK));
7242         i40e_flush(&pf->hw);
7243
7244         iounmap(pf->hw.hw_addr);
7245         kfree(pf);
7246         pci_release_selected_regions(pdev,
7247                                      pci_select_bars(pdev, IORESOURCE_MEM));
7248
7249         pci_disable_pcie_error_reporting(pdev);
7250         pci_disable_device(pdev);
7251 }
7252
7253 /**
7254  * i40e_pci_error_detected - warning that something funky happened in PCI land
7255  * @pdev: PCI device information struct
7256  *
7257  * Called to warn that something happened and the error handling steps
7258  * are in progress.  Allows the driver to quiesce things, be ready for
7259  * remediation.
7260  **/
7261 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
7262                                                 enum pci_channel_state error)
7263 {
7264         struct i40e_pf *pf = pci_get_drvdata(pdev);
7265
7266         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
7267
7268         /* shutdown all operations */
7269         i40e_pf_quiesce_all_vsi(pf);
7270
7271         /* Request a slot reset */
7272         return PCI_ERS_RESULT_NEED_RESET;
7273 }
7274
7275 /**
7276  * i40e_pci_error_slot_reset - a PCI slot reset just happened
7277  * @pdev: PCI device information struct
7278  *
7279  * Called to find if the driver can work with the device now that
7280  * the pci slot has been reset.  If a basic connection seems good
7281  * (registers are readable and have sane content) then return a
7282  * happy little PCI_ERS_RESULT_xxx.
7283  **/
7284 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
7285 {
7286         struct i40e_pf *pf = pci_get_drvdata(pdev);
7287         pci_ers_result_t result;
7288         int err;
7289         u32 reg;
7290
7291         dev_info(&pdev->dev, "%s\n", __func__);
7292         if (pci_enable_device_mem(pdev)) {
7293                 dev_info(&pdev->dev,
7294                          "Cannot re-enable PCI device after reset.\n");
7295                 result = PCI_ERS_RESULT_DISCONNECT;
7296         } else {
7297                 pci_set_master(pdev);
7298                 pci_restore_state(pdev);
7299                 pci_save_state(pdev);
7300                 pci_wake_from_d3(pdev, false);
7301
7302                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
7303                 if (reg == 0)
7304                         result = PCI_ERS_RESULT_RECOVERED;
7305                 else
7306                         result = PCI_ERS_RESULT_DISCONNECT;
7307         }
7308
7309         err = pci_cleanup_aer_uncorrect_error_status(pdev);
7310         if (err) {
7311                 dev_info(&pdev->dev,
7312                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
7313                          err);
7314                 /* non-fatal, continue */
7315         }
7316
7317         return result;
7318 }
7319
7320 /**
7321  * i40e_pci_error_resume - restart operations after PCI error recovery
7322  * @pdev: PCI device information struct
7323  *
7324  * Called to allow the driver to bring things back up after PCI error
7325  * and/or reset recovery has finished.
7326  **/
7327 static void i40e_pci_error_resume(struct pci_dev *pdev)
7328 {
7329         struct i40e_pf *pf = pci_get_drvdata(pdev);
7330
7331         dev_info(&pdev->dev, "%s\n", __func__);
7332         i40e_handle_reset_warning(pf);
7333 }
7334
7335 static const struct pci_error_handlers i40e_err_handler = {
7336         .error_detected = i40e_pci_error_detected,
7337         .slot_reset = i40e_pci_error_slot_reset,
7338         .resume = i40e_pci_error_resume,
7339 };
7340
7341 static struct pci_driver i40e_driver = {
7342         .name     = i40e_driver_name,
7343         .id_table = i40e_pci_tbl,
7344         .probe    = i40e_probe,
7345         .remove   = i40e_remove,
7346         .err_handler = &i40e_err_handler,
7347         .sriov_configure = i40e_pci_sriov_configure,
7348 };
7349
7350 /**
7351  * i40e_init_module - Driver registration routine
7352  *
7353  * i40e_init_module is the first routine called when the driver is
7354  * loaded. All it does is register with the PCI subsystem.
7355  **/
7356 static int __init i40e_init_module(void)
7357 {
7358         pr_info("%s: %s - version %s\n", i40e_driver_name,
7359                 i40e_driver_string, i40e_driver_version_str);
7360         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
7361         i40e_dbg_init();
7362         return pci_register_driver(&i40e_driver);
7363 }
7364 module_init(i40e_init_module);
7365
7366 /**
7367  * i40e_exit_module - Driver exit cleanup routine
7368  *
7369  * i40e_exit_module is called just before the driver is removed
7370  * from memory.
7371  **/
7372 static void __exit i40e_exit_module(void)
7373 {
7374         pci_unregister_driver(&i40e_driver);
7375         i40e_dbg_exit();
7376 }
7377 module_exit(i40e_exit_module);