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