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

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2016 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * The full GNU General Public License is included in this distribution in
  19  * the file called "COPYING".
  20  *
  21  * Contact Information:
  22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  ******************************************************************************/
  26
  27 #include <linux/etherdevice.h>
  28 #include <linux/of_net.h>
  29 #include <linux/pci.h>
  30
  31 /* Local includes */
  32 #include "i40e.h"
  33 #include "i40e_diag.h"
  34 #include <net/udp_tunnel.h>
  35
  36 const char i40e_driver_name[] = "i40e";
  37 static const char i40e_driver_string[] =
  38                         "Intel(R) Ethernet Connection XL710 Network Driver";
  39
  40 #define DRV_KERN "-k"
  41
  42 #define DRV_VERSION_MAJOR 1
  43 #define DRV_VERSION_MINOR 6
  44 #define DRV_VERSION_BUILD 11
  45 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
  46              __stringify(DRV_VERSION_MINOR) "." \
  47              __stringify(DRV_VERSION_BUILD)    DRV_KERN
  48 const char i40e_driver_version_str[] = DRV_VERSION;
  49 static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
  50
  51 /* a bit of forward declarations */
  52 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  53 static void i40e_handle_reset_warning(struct i40e_pf *pf);
  54 static int i40e_add_vsi(struct i40e_vsi *vsi);
  55 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  56 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
  57 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  58 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  59 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  60 static void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
  61                               u16 rss_table_size, u16 rss_size);
  62 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  63 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  64
  65 /* i40e_pci_tbl - PCI Device ID Table
  66  *
  67  * Last entry must be all 0s
  68  *
  69  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  70  *   Class, Class Mask, private data (not used) }
  71  */
  72 static const struct pci_device_id i40e_pci_tbl[] = {
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  78         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  79         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  80         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  81         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
  82         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  83         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_X722), 0},
  84         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_X722), 0},
  85         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  86         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  87         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  88         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_I_X722), 0},
  89         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  90         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
  91         /* required last entry */
  92         {0, }
  93 };
  94 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  95
  96 #define I40E_MAX_VF_COUNT 128
  97 static int debug = -1;
  98 module_param(debug, int, 0);
  99 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
 100
 101 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
 102 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
 103 MODULE_LICENSE("GPL");
 104 MODULE_VERSION(DRV_VERSION);
 105
 106 static struct workqueue_struct *i40e_wq;
 107
 108 /**
 109  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 110  * @hw:   pointer to the HW structure
 111  * @mem:  ptr to mem struct to fill out
 112  * @size: size of memory requested
 113  * @alignment: what to align the allocation to
 114  **/
 115 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 116                             u64 size, u32 alignment)
 117 {
 118         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 119
 120         mem->size = ALIGN(size, alignment);
 121         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 122                                       &mem->pa, GFP_KERNEL);
 123         if (!mem->va)
 124                 return -ENOMEM;
 125
 126         return 0;
 127 }
 128
 129 /**
 130  * i40e_free_dma_mem_d - OS specific memory free for shared code
 131  * @hw:   pointer to the HW structure
 132  * @mem:  ptr to mem struct to free
 133  **/
 134 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 135 {
 136         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 137
 138         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 139         mem->va = NULL;
 140         mem->pa = 0;
 141         mem->size = 0;
 142
 143         return 0;
 144 }
 145
 146 /**
 147  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 148  * @hw:   pointer to the HW structure
 149  * @mem:  ptr to mem struct to fill out
 150  * @size: size of memory requested
 151  **/
 152 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 153                              u32 size)
 154 {
 155         mem->size = size;
 156         mem->va = kzalloc(size, GFP_KERNEL);
 157
 158         if (!mem->va)
 159                 return -ENOMEM;
 160
 161         return 0;
 162 }
 163
 164 /**
 165  * i40e_free_virt_mem_d - OS specific memory free for shared code
 166  * @hw:   pointer to the HW structure
 167  * @mem:  ptr to mem struct to free
 168  **/
 169 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 170 {
 171         /* it's ok to kfree a NULL pointer */
 172         kfree(mem->va);
 173         mem->va = NULL;
 174         mem->size = 0;
 175
 176         return 0;
 177 }
 178
 179 /**
 180  * i40e_get_lump - find a lump of free generic resource
 181  * @pf: board private structure
 182  * @pile: the pile of resource to search
 183  * @needed: the number of items needed
 184  * @id: an owner id to stick on the items assigned
 185  *
 186  * Returns the base item index of the lump, or negative for error
 187  *
 188  * The search_hint trick and lack of advanced fit-finding only work
 189  * because we're highly likely to have all the same size lump requests.
 190  * Linear search time and any fragmentation should be minimal.
 191  **/
 192 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 193                          u16 needed, u16 id)
 194 {
 195         int ret = -ENOMEM;
 196         int i, j;
 197
 198         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 199                 dev_info(&pf->pdev->dev,
 200                          "param err: pile=%p needed=%d id=0x%04x\n",
 201                          pile, needed, id);
 202                 return -EINVAL;
 203         }
 204
 205         /* start the linear search with an imperfect hint */
 206         i = pile->search_hint;
 207         while (i < pile->num_entries) {
 208                 /* skip already allocated entries */
 209                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 210                         i++;
 211                         continue;
 212                 }
 213
 214                 /* do we have enough in this lump? */
 215                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 216                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 217                                 break;
 218                 }
 219
 220                 if (j == needed) {
 221                         /* there was enough, so assign it to the requestor */
 222                         for (j = 0; j < needed; j++)
 223                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 224                         ret = i;
 225                         pile->search_hint = i + j;
 226                         break;
 227                 }
 228
 229                 /* not enough, so skip over it and continue looking */
 230                 i += j;
 231         }
 232
 233         return ret;
 234 }
 235
 236 /**
 237  * i40e_put_lump - return a lump of generic resource
 238  * @pile: the pile of resource to search
 239  * @index: the base item index
 240  * @id: the owner id of the items assigned
 241  *
 242  * Returns the count of items in the lump
 243  **/
 244 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 245 {
 246         int valid_id = (id | I40E_PILE_VALID_BIT);
 247         int count = 0;
 248         int i;
 249
 250         if (!pile || index >= pile->num_entries)
 251                 return -EINVAL;
 252
 253         for (i = index;
 254              i < pile->num_entries && pile->list[i] == valid_id;
 255              i++) {
 256                 pile->list[i] = 0;
 257                 count++;
 258         }
 259
 260         if (count && index < pile->search_hint)
 261                 pile->search_hint = index;
 262
 263         return count;
 264 }
 265
 266 /**
 267  * i40e_find_vsi_from_id - searches for the vsi with the given id
 268  * @pf - the pf structure to search for the vsi
 269  * @id - id of the vsi it is searching for
 270  **/
 271 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 272 {
 273         int i;
 274
 275         for (i = 0; i < pf->num_alloc_vsi; i++)
 276                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 277                         return pf->vsi[i];
 278
 279         return NULL;
 280 }
 281
 282 /**
 283  * i40e_service_event_schedule - Schedule the service task to wake up
 284  * @pf: board private structure
 285  *
 286  * If not already scheduled, this puts the task into the work queue
 287  **/
 288 void i40e_service_event_schedule(struct i40e_pf *pf)
 289 {
 290         if (!test_bit(__I40E_DOWN, &pf->state) &&
 291             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 292             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 293                 queue_work(i40e_wq, &pf->service_task);
 294 }
 295
 296 /**
 297  * i40e_tx_timeout - Respond to a Tx Hang
 298  * @netdev: network interface device structure
 299  *
 300  * If any port has noticed a Tx timeout, it is likely that the whole
 301  * device is munged, not just the one netdev port, so go for the full
 302  * reset.
 303  **/
 304 #ifdef I40E_FCOE
 305 void i40e_tx_timeout(struct net_device *netdev)
 306 #else
 307 static void i40e_tx_timeout(struct net_device *netdev)
 308 #endif
 309 {
 310         struct i40e_netdev_priv *np = netdev_priv(netdev);
 311         struct i40e_vsi *vsi = np->vsi;
 312         struct i40e_pf *pf = vsi->back;
 313         struct i40e_ring *tx_ring = NULL;
 314         unsigned int i, hung_queue = 0;
 315         u32 head, val;
 316
 317         pf->tx_timeout_count++;
 318
 319         /* find the stopped queue the same way the stack does */
 320         for (i = 0; i < netdev->num_tx_queues; i++) {
 321                 struct netdev_queue *q;
 322                 unsigned long trans_start;
 323
 324                 q = netdev_get_tx_queue(netdev, i);
 325                 trans_start = q->trans_start;
 326                 if (netif_xmit_stopped(q) &&
 327                     time_after(jiffies,
 328                                (trans_start + netdev->watchdog_timeo))) {
 329                         hung_queue = i;
 330                         break;
 331                 }
 332         }
 333
 334         if (i == netdev->num_tx_queues) {
 335                 netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
 336         } else {
 337                 /* now that we have an index, find the tx_ring struct */
 338                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 339                         if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
 340                                 if (hung_queue ==
 341                                     vsi->tx_rings[i]->queue_index) {
 342                                         tx_ring = vsi->tx_rings[i];
 343                                         break;
 344                                 }
 345                         }
 346                 }
 347         }
 348
 349         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 350                 pf->tx_timeout_recovery_level = 1;  /* reset after some time */
 351         else if (time_before(jiffies,
 352                       (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
 353                 return;   /* don't do any new action before the next timeout */
 354
 355         if (tx_ring) {
 356                 head = i40e_get_head(tx_ring);
 357                 /* Read interrupt register */
 358                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
 359                         val = rd32(&pf->hw,
 360                              I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
 361                                                 tx_ring->vsi->base_vector - 1));
 362                 else
 363                         val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
 364
 365                 netdev_info(netdev, "tx_timeout: VSI_seid: %d, Q %d, NTC: 0x%x, HWB: 0x%x, NTU: 0x%x, TAIL: 0x%x, INT: 0x%x\n",
 366                             vsi->seid, hung_queue, tx_ring->next_to_clean,
 367                             head, tx_ring->next_to_use,
 368                             readl(tx_ring->tail), val);
 369         }
 370
 371         pf->tx_timeout_last_recovery = jiffies;
 372         netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
 373                     pf->tx_timeout_recovery_level, hung_queue);
 374
 375         switch (pf->tx_timeout_recovery_level) {
 376         case 1:
 377                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 378                 break;
 379         case 2:
 380                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 381                 break;
 382         case 3:
 383                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 384                 break;
 385         default:
 386                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 387                 break;
 388         }
 389
 390         i40e_service_event_schedule(pf);
 391         pf->tx_timeout_recovery_level++;
 392 }
 393
 394 /**
 395  * i40e_get_vsi_stats_struct - Get System Network Statistics
 396  * @vsi: the VSI we care about
 397  *
 398  * Returns the address of the device statistics structure.
 399  * The statistics are actually updated from the service task.
 400  **/
 401 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 402 {
 403         return &vsi->net_stats;
 404 }
 405
 406 /**
 407  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 408  * @netdev: network interface device structure
 409  *
 410  * Returns the address of the device statistics structure.
 411  * The statistics are actually updated from the service task.
 412  **/
 413 #ifdef I40E_FCOE
 414 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 415                                              struct net_device *netdev,
 416                                              struct rtnl_link_stats64 *stats)
 417 #else
 418 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 419                                              struct net_device *netdev,
 420                                              struct rtnl_link_stats64 *stats)
 421 #endif
 422 {
 423         struct i40e_netdev_priv *np = netdev_priv(netdev);
 424         struct i40e_ring *tx_ring, *rx_ring;
 425         struct i40e_vsi *vsi = np->vsi;
 426         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 427         int i;
 428
 429         if (test_bit(__I40E_DOWN, &vsi->state))
 430                 return stats;
 431
 432         if (!vsi->tx_rings)
 433                 return stats;
 434
 435         rcu_read_lock();
 436         for (i = 0; i < vsi->num_queue_pairs; i++) {
 437                 u64 bytes, packets;
 438                 unsigned int start;
 439
 440                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 441                 if (!tx_ring)
 442                         continue;
 443
 444                 do {
 445                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 446                         packets = tx_ring->stats.packets;
 447                         bytes   = tx_ring->stats.bytes;
 448                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 449
 450                 stats->tx_packets += packets;
 451                 stats->tx_bytes   += bytes;
 452                 rx_ring = &tx_ring[1];
 453
 454                 do {
 455                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 456                         packets = rx_ring->stats.packets;
 457                         bytes   = rx_ring->stats.bytes;
 458                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 459
 460                 stats->rx_packets += packets;
 461                 stats->rx_bytes   += bytes;
 462         }
 463         rcu_read_unlock();
 464
 465         /* following stats updated by i40e_watchdog_subtask() */
 466         stats->multicast        = vsi_stats->multicast;
 467         stats->tx_errors        = vsi_stats->tx_errors;
 468         stats->tx_dropped       = vsi_stats->tx_dropped;
 469         stats->rx_errors        = vsi_stats->rx_errors;
 470         stats->rx_dropped       = vsi_stats->rx_dropped;
 471         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 472         stats->rx_length_errors = vsi_stats->rx_length_errors;
 473
 474         return stats;
 475 }
 476
 477 /**
 478  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 479  * @vsi: the VSI to have its stats reset
 480  **/
 481 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 482 {
 483         struct rtnl_link_stats64 *ns;
 484         int i;
 485
 486         if (!vsi)
 487                 return;
 488
 489         ns = i40e_get_vsi_stats_struct(vsi);
 490         memset(ns, 0, sizeof(*ns));
 491         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 492         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 493         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 494         if (vsi->rx_rings && vsi->rx_rings[0]) {
 495                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 496                         memset(&vsi->rx_rings[i]->stats, 0,
 497                                sizeof(vsi->rx_rings[i]->stats));
 498                         memset(&vsi->rx_rings[i]->rx_stats, 0,
 499                                sizeof(vsi->rx_rings[i]->rx_stats));
 500                         memset(&vsi->tx_rings[i]->stats, 0,
 501                                sizeof(vsi->tx_rings[i]->stats));
 502                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 503                                sizeof(vsi->tx_rings[i]->tx_stats));
 504                 }
 505         }
 506         vsi->stat_offsets_loaded = false;
 507 }
 508
 509 /**
 510  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 511  * @pf: the PF to be reset
 512  **/
 513 void i40e_pf_reset_stats(struct i40e_pf *pf)
 514 {
 515         int i;
 516
 517         memset(&pf->stats, 0, sizeof(pf->stats));
 518         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 519         pf->stat_offsets_loaded = false;
 520
 521         for (i = 0; i < I40E_MAX_VEB; i++) {
 522                 if (pf->veb[i]) {
 523                         memset(&pf->veb[i]->stats, 0,
 524                                sizeof(pf->veb[i]->stats));
 525                         memset(&pf->veb[i]->stats_offsets, 0,
 526                                sizeof(pf->veb[i]->stats_offsets));
 527                         pf->veb[i]->stat_offsets_loaded = false;
 528                 }
 529         }
 530 }
 531
 532 /**
 533  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 534  * @hw: ptr to the hardware info
 535  * @hireg: the high 32 bit reg to read
 536  * @loreg: the low 32 bit reg to read
 537  * @offset_loaded: has the initial offset been loaded yet
 538  * @offset: ptr to current offset value
 539  * @stat: ptr to the stat
 540  *
 541  * Since the device stats are not reset at PFReset, they likely will not
 542  * be zeroed when the driver starts.  We'll save the first values read
 543  * and use them as offsets to be subtracted from the raw values in order
 544  * to report stats that count from zero.  In the process, we also manage
 545  * the potential roll-over.
 546  **/
 547 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 548                                bool offset_loaded, u64 *offset, u64 *stat)
 549 {
 550         u64 new_data;
 551
 552         if (hw->device_id == I40E_DEV_ID_QEMU) {
 553                 new_data = rd32(hw, loreg);
 554                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 555         } else {
 556                 new_data = rd64(hw, loreg);
 557         }
 558         if (!offset_loaded)
 559                 *offset = new_data;
 560         if (likely(new_data >= *offset))
 561                 *stat = new_data - *offset;
 562         else
 563                 *stat = (new_data + BIT_ULL(48)) - *offset;
 564         *stat &= 0xFFFFFFFFFFFFULL;
 565 }
 566
 567 /**
 568  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 569  * @hw: ptr to the hardware info
 570  * @reg: the hw reg to read
 571  * @offset_loaded: has the initial offset been loaded yet
 572  * @offset: ptr to current offset value
 573  * @stat: ptr to the stat
 574  **/
 575 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 576                                bool offset_loaded, u64 *offset, u64 *stat)
 577 {
 578         u32 new_data;
 579
 580         new_data = rd32(hw, reg);
 581         if (!offset_loaded)
 582                 *offset = new_data;
 583         if (likely(new_data >= *offset))
 584                 *stat = (u32)(new_data - *offset);
 585         else
 586                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 587 }
 588
 589 /**
 590  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 591  * @vsi: the VSI to be updated
 592  **/
 593 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 594 {
 595         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 596         struct i40e_pf *pf = vsi->back;
 597         struct i40e_hw *hw = &pf->hw;
 598         struct i40e_eth_stats *oes;
 599         struct i40e_eth_stats *es;     /* device's eth stats */
 600
 601         es = &vsi->eth_stats;
 602         oes = &vsi->eth_stats_offsets;
 603
 604         /* Gather up the stats that the hw collects */
 605         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 606                            vsi->stat_offsets_loaded,
 607                            &oes->tx_errors, &es->tx_errors);
 608         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 609                            vsi->stat_offsets_loaded,
 610                            &oes->rx_discards, &es->rx_discards);
 611         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 612                            vsi->stat_offsets_loaded,
 613                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 614         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 615                            vsi->stat_offsets_loaded,
 616                            &oes->tx_errors, &es->tx_errors);
 617
 618         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 619                            I40E_GLV_GORCL(stat_idx),
 620                            vsi->stat_offsets_loaded,
 621                            &oes->rx_bytes, &es->rx_bytes);
 622         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 623                            I40E_GLV_UPRCL(stat_idx),
 624                            vsi->stat_offsets_loaded,
 625                            &oes->rx_unicast, &es->rx_unicast);
 626         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 627                            I40E_GLV_MPRCL(stat_idx),
 628                            vsi->stat_offsets_loaded,
 629                            &oes->rx_multicast, &es->rx_multicast);
 630         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 631                            I40E_GLV_BPRCL(stat_idx),
 632                            vsi->stat_offsets_loaded,
 633                            &oes->rx_broadcast, &es->rx_broadcast);
 634
 635         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 636                            I40E_GLV_GOTCL(stat_idx),
 637                            vsi->stat_offsets_loaded,
 638                            &oes->tx_bytes, &es->tx_bytes);
 639         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 640                            I40E_GLV_UPTCL(stat_idx),
 641                            vsi->stat_offsets_loaded,
 642                            &oes->tx_unicast, &es->tx_unicast);
 643         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 644                            I40E_GLV_MPTCL(stat_idx),
 645                            vsi->stat_offsets_loaded,
 646                            &oes->tx_multicast, &es->tx_multicast);
 647         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 648                            I40E_GLV_BPTCL(stat_idx),
 649                            vsi->stat_offsets_loaded,
 650                            &oes->tx_broadcast, &es->tx_broadcast);
 651         vsi->stat_offsets_loaded = true;
 652 }
 653
 654 /**
 655  * i40e_update_veb_stats - Update Switch component statistics
 656  * @veb: the VEB being updated
 657  **/
 658 static void i40e_update_veb_stats(struct i40e_veb *veb)
 659 {
 660         struct i40e_pf *pf = veb->pf;
 661         struct i40e_hw *hw = &pf->hw;
 662         struct i40e_eth_stats *oes;
 663         struct i40e_eth_stats *es;     /* device's eth stats */
 664         struct i40e_veb_tc_stats *veb_oes;
 665         struct i40e_veb_tc_stats *veb_es;
 666         int i, idx = 0;
 667
 668         idx = veb->stats_idx;
 669         es = &veb->stats;
 670         oes = &veb->stats_offsets;
 671         veb_es = &veb->tc_stats;
 672         veb_oes = &veb->tc_stats_offsets;
 673
 674         /* Gather up the stats that the hw collects */
 675         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 676                            veb->stat_offsets_loaded,
 677                            &oes->tx_discards, &es->tx_discards);
 678         if (hw->revision_id > 0)
 679                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 680                                    veb->stat_offsets_loaded,
 681                                    &oes->rx_unknown_protocol,
 682                                    &es->rx_unknown_protocol);
 683         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 684                            veb->stat_offsets_loaded,
 685                            &oes->rx_bytes, &es->rx_bytes);
 686         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 687                            veb->stat_offsets_loaded,
 688                            &oes->rx_unicast, &es->rx_unicast);
 689         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 690                            veb->stat_offsets_loaded,
 691                            &oes->rx_multicast, &es->rx_multicast);
 692         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 693                            veb->stat_offsets_loaded,
 694                            &oes->rx_broadcast, &es->rx_broadcast);
 695
 696         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 697                            veb->stat_offsets_loaded,
 698                            &oes->tx_bytes, &es->tx_bytes);
 699         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 700                            veb->stat_offsets_loaded,
 701                            &oes->tx_unicast, &es->tx_unicast);
 702         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 703                            veb->stat_offsets_loaded,
 704                            &oes->tx_multicast, &es->tx_multicast);
 705         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 706                            veb->stat_offsets_loaded,
 707                            &oes->tx_broadcast, &es->tx_broadcast);
 708         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 709                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 710                                    I40E_GLVEBTC_RPCL(i, idx),
 711                                    veb->stat_offsets_loaded,
 712                                    &veb_oes->tc_rx_packets[i],
 713                                    &veb_es->tc_rx_packets[i]);
 714                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 715                                    I40E_GLVEBTC_RBCL(i, idx),
 716                                    veb->stat_offsets_loaded,
 717                                    &veb_oes->tc_rx_bytes[i],
 718                                    &veb_es->tc_rx_bytes[i]);
 719                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 720                                    I40E_GLVEBTC_TPCL(i, idx),
 721                                    veb->stat_offsets_loaded,
 722                                    &veb_oes->tc_tx_packets[i],
 723                                    &veb_es->tc_tx_packets[i]);
 724                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 725                                    I40E_GLVEBTC_TBCL(i, idx),
 726                                    veb->stat_offsets_loaded,
 727                                    &veb_oes->tc_tx_bytes[i],
 728                                    &veb_es->tc_tx_bytes[i]);
 729         }
 730         veb->stat_offsets_loaded = true;
 731 }
 732
 733 #ifdef I40E_FCOE
 734 /**
 735  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 736  * @vsi: the VSI that is capable of doing FCoE
 737  **/
 738 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 739 {
 740         struct i40e_pf *pf = vsi->back;
 741         struct i40e_hw *hw = &pf->hw;
 742         struct i40e_fcoe_stats *ofs;
 743         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 744         int idx;
 745
 746         if (vsi->type != I40E_VSI_FCOE)
 747                 return;
 748
 749         idx = hw->pf_id + I40E_FCOE_PF_STAT_OFFSET;
 750         fs = &vsi->fcoe_stats;
 751         ofs = &vsi->fcoe_stats_offsets;
 752
 753         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 754                            vsi->fcoe_stat_offsets_loaded,
 755                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 756         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 757                            vsi->fcoe_stat_offsets_loaded,
 758                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 759         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 760                            vsi->fcoe_stat_offsets_loaded,
 761                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 762         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 763                            vsi->fcoe_stat_offsets_loaded,
 764                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 765         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 766                            vsi->fcoe_stat_offsets_loaded,
 767                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 768         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 769                            vsi->fcoe_stat_offsets_loaded,
 770                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 771         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 772                            vsi->fcoe_stat_offsets_loaded,
 773                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 774         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 775                            vsi->fcoe_stat_offsets_loaded,
 776                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 777
 778         vsi->fcoe_stat_offsets_loaded = true;
 779 }
 780
 781 #endif
 782 /**
 783  * i40e_update_vsi_stats - Update the vsi statistics counters.
 784  * @vsi: the VSI to be updated
 785  *
 786  * There are a few instances where we store the same stat in a
 787  * couple of different structs.  This is partly because we have
 788  * the netdev stats that need to be filled out, which is slightly
 789  * different from the "eth_stats" defined by the chip and used in
 790  * VF communications.  We sort it out here.
 791  **/
 792 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 793 {
 794         struct i40e_pf *pf = vsi->back;
 795         struct rtnl_link_stats64 *ons;
 796         struct rtnl_link_stats64 *ns;   /* netdev stats */
 797         struct i40e_eth_stats *oes;
 798         struct i40e_eth_stats *es;     /* device's eth stats */
 799         u32 tx_restart, tx_busy;
 800         u64 tx_lost_interrupt;
 801         struct i40e_ring *p;
 802         u32 rx_page, rx_buf;
 803         u64 bytes, packets;
 804         unsigned int start;
 805         u64 tx_linearize;
 806         u64 tx_force_wb;
 807         u64 rx_p, rx_b;
 808         u64 tx_p, tx_b;
 809         u16 q;
 810
 811         if (test_bit(__I40E_DOWN, &vsi->state) ||
 812             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 813                 return;
 814
 815         ns = i40e_get_vsi_stats_struct(vsi);
 816         ons = &vsi->net_stats_offsets;
 817         es = &vsi->eth_stats;
 818         oes = &vsi->eth_stats_offsets;
 819
 820         /* Gather up the netdev and vsi stats that the driver collects
 821          * on the fly during packet processing
 822          */
 823         rx_b = rx_p = 0;
 824         tx_b = tx_p = 0;
 825         tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
 826         tx_lost_interrupt = 0;
 827         rx_page = 0;
 828         rx_buf = 0;
 829         rcu_read_lock();
 830         for (q = 0; q < vsi->num_queue_pairs; q++) {
 831                 /* locate Tx ring */
 832                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 833
 834                 do {
 835                         start = u64_stats_fetch_begin_irq(&p->syncp);
 836                         packets = p->stats.packets;
 837                         bytes = p->stats.bytes;
 838                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 839                 tx_b += bytes;
 840                 tx_p += packets;
 841                 tx_restart += p->tx_stats.restart_queue;
 842                 tx_busy += p->tx_stats.tx_busy;
 843                 tx_linearize += p->tx_stats.tx_linearize;
 844                 tx_force_wb += p->tx_stats.tx_force_wb;
 845                 tx_lost_interrupt += p->tx_stats.tx_lost_interrupt;
 846
 847                 /* Rx queue is part of the same block as Tx queue */
 848                 p = &p[1];
 849                 do {
 850                         start = u64_stats_fetch_begin_irq(&p->syncp);
 851                         packets = p->stats.packets;
 852                         bytes = p->stats.bytes;
 853                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 854                 rx_b += bytes;
 855                 rx_p += packets;
 856                 rx_buf += p->rx_stats.alloc_buff_failed;
 857                 rx_page += p->rx_stats.alloc_page_failed;
 858         }
 859         rcu_read_unlock();
 860         vsi->tx_restart = tx_restart;
 861         vsi->tx_busy = tx_busy;
 862         vsi->tx_linearize = tx_linearize;
 863         vsi->tx_force_wb = tx_force_wb;
 864         vsi->tx_lost_interrupt = tx_lost_interrupt;
 865         vsi->rx_page_failed = rx_page;
 866         vsi->rx_buf_failed = rx_buf;
 867
 868         ns->rx_packets = rx_p;
 869         ns->rx_bytes = rx_b;
 870         ns->tx_packets = tx_p;
 871         ns->tx_bytes = tx_b;
 872
 873         /* update netdev stats from eth stats */
 874         i40e_update_eth_stats(vsi);
 875         ons->tx_errors = oes->tx_errors;
 876         ns->tx_errors = es->tx_errors;
 877         ons->multicast = oes->rx_multicast;
 878         ns->multicast = es->rx_multicast;
 879         ons->rx_dropped = oes->rx_discards;
 880         ns->rx_dropped = es->rx_discards;
 881         ons->tx_dropped = oes->tx_discards;
 882         ns->tx_dropped = es->tx_discards;
 883
 884         /* pull in a couple PF stats if this is the main vsi */
 885         if (vsi == pf->vsi[pf->lan_vsi]) {
 886                 ns->rx_crc_errors = pf->stats.crc_errors;
 887                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 888                 ns->rx_length_errors = pf->stats.rx_length_errors;
 889         }
 890 }
 891
 892 /**
 893  * i40e_update_pf_stats - Update the PF statistics counters.
 894  * @pf: the PF to be updated
 895  **/
 896 static void i40e_update_pf_stats(struct i40e_pf *pf)
 897 {
 898         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 899         struct i40e_hw_port_stats *nsd = &pf->stats;
 900         struct i40e_hw *hw = &pf->hw;
 901         u32 val;
 902         int i;
 903
 904         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 905                            I40E_GLPRT_GORCL(hw->port),
 906                            pf->stat_offsets_loaded,
 907                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 908         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 909                            I40E_GLPRT_GOTCL(hw->port),
 910                            pf->stat_offsets_loaded,
 911                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 912         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 913                            pf->stat_offsets_loaded,
 914                            &osd->eth.rx_discards,
 915                            &nsd->eth.rx_discards);
 916         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 917                            I40E_GLPRT_UPRCL(hw->port),
 918                            pf->stat_offsets_loaded,
 919                            &osd->eth.rx_unicast,
 920                            &nsd->eth.rx_unicast);
 921         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 922                            I40E_GLPRT_MPRCL(hw->port),
 923                            pf->stat_offsets_loaded,
 924                            &osd->eth.rx_multicast,
 925                            &nsd->eth.rx_multicast);
 926         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 927                            I40E_GLPRT_BPRCL(hw->port),
 928                            pf->stat_offsets_loaded,
 929                            &osd->eth.rx_broadcast,
 930                            &nsd->eth.rx_broadcast);
 931         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 932                            I40E_GLPRT_UPTCL(hw->port),
 933                            pf->stat_offsets_loaded,
 934                            &osd->eth.tx_unicast,
 935                            &nsd->eth.tx_unicast);
 936         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 937                            I40E_GLPRT_MPTCL(hw->port),
 938                            pf->stat_offsets_loaded,
 939                            &osd->eth.tx_multicast,
 940                            &nsd->eth.tx_multicast);
 941         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 942                            I40E_GLPRT_BPTCL(hw->port),
 943                            pf->stat_offsets_loaded,
 944                            &osd->eth.tx_broadcast,
 945                            &nsd->eth.tx_broadcast);
 946
 947         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 948                            pf->stat_offsets_loaded,
 949                            &osd->tx_dropped_link_down,
 950                            &nsd->tx_dropped_link_down);
 951
 952         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 953                            pf->stat_offsets_loaded,
 954                            &osd->crc_errors, &nsd->crc_errors);
 955
 956         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 957                            pf->stat_offsets_loaded,
 958                            &osd->illegal_bytes, &nsd->illegal_bytes);
 959
 960         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 961                            pf->stat_offsets_loaded,
 962                            &osd->mac_local_faults,
 963                            &nsd->mac_local_faults);
 964         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 965                            pf->stat_offsets_loaded,
 966                            &osd->mac_remote_faults,
 967                            &nsd->mac_remote_faults);
 968
 969         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 970                            pf->stat_offsets_loaded,
 971                            &osd->rx_length_errors,
 972                            &nsd->rx_length_errors);
 973
 974         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 975                            pf->stat_offsets_loaded,
 976                            &osd->link_xon_rx, &nsd->link_xon_rx);
 977         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 978                            pf->stat_offsets_loaded,
 979                            &osd->link_xon_tx, &nsd->link_xon_tx);
 980         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 981                            pf->stat_offsets_loaded,
 982                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 983         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 984                            pf->stat_offsets_loaded,
 985                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
 986
 987         for (i = 0; i < 8; i++) {
 988                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 989                                    pf->stat_offsets_loaded,
 990                                    &osd->priority_xoff_rx[i],
 991                                    &nsd->priority_xoff_rx[i]);
 992                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 993                                    pf->stat_offsets_loaded,
 994                                    &osd->priority_xon_rx[i],
 995                                    &nsd->priority_xon_rx[i]);
 996                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
 997                                    pf->stat_offsets_loaded,
 998                                    &osd->priority_xon_tx[i],
 999                                    &nsd->priority_xon_tx[i]);
1000                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1001                                    pf->stat_offsets_loaded,
1002                                    &osd->priority_xoff_tx[i],
1003                                    &nsd->priority_xoff_tx[i]);
1004                 i40e_stat_update32(hw,
1005                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1006                                    pf->stat_offsets_loaded,
1007                                    &osd->priority_xon_2_xoff[i],
1008                                    &nsd->priority_xon_2_xoff[i]);
1009         }
1010
1011         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1012                            I40E_GLPRT_PRC64L(hw->port),
1013                            pf->stat_offsets_loaded,
1014                            &osd->rx_size_64, &nsd->rx_size_64);
1015         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1016                            I40E_GLPRT_PRC127L(hw->port),
1017                            pf->stat_offsets_loaded,
1018                            &osd->rx_size_127, &nsd->rx_size_127);
1019         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1020                            I40E_GLPRT_PRC255L(hw->port),
1021                            pf->stat_offsets_loaded,
1022                            &osd->rx_size_255, &nsd->rx_size_255);
1023         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1024                            I40E_GLPRT_PRC511L(hw->port),
1025                            pf->stat_offsets_loaded,
1026                            &osd->rx_size_511, &nsd->rx_size_511);
1027         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1028                            I40E_GLPRT_PRC1023L(hw->port),
1029                            pf->stat_offsets_loaded,
1030                            &osd->rx_size_1023, &nsd->rx_size_1023);
1031         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1032                            I40E_GLPRT_PRC1522L(hw->port),
1033                            pf->stat_offsets_loaded,
1034                            &osd->rx_size_1522, &nsd->rx_size_1522);
1035         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1036                            I40E_GLPRT_PRC9522L(hw->port),
1037                            pf->stat_offsets_loaded,
1038                            &osd->rx_size_big, &nsd->rx_size_big);
1039
1040         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1041                            I40E_GLPRT_PTC64L(hw->port),
1042                            pf->stat_offsets_loaded,
1043                            &osd->tx_size_64, &nsd->tx_size_64);
1044         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1045                            I40E_GLPRT_PTC127L(hw->port),
1046                            pf->stat_offsets_loaded,
1047                            &osd->tx_size_127, &nsd->tx_size_127);
1048         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1049                            I40E_GLPRT_PTC255L(hw->port),
1050                            pf->stat_offsets_loaded,
1051                            &osd->tx_size_255, &nsd->tx_size_255);
1052         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1053                            I40E_GLPRT_PTC511L(hw->port),
1054                            pf->stat_offsets_loaded,
1055                            &osd->tx_size_511, &nsd->tx_size_511);
1056         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1057                            I40E_GLPRT_PTC1023L(hw->port),
1058                            pf->stat_offsets_loaded,
1059                            &osd->tx_size_1023, &nsd->tx_size_1023);
1060         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1061                            I40E_GLPRT_PTC1522L(hw->port),
1062                            pf->stat_offsets_loaded,
1063                            &osd->tx_size_1522, &nsd->tx_size_1522);
1064         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1065                            I40E_GLPRT_PTC9522L(hw->port),
1066                            pf->stat_offsets_loaded,
1067                            &osd->tx_size_big, &nsd->tx_size_big);
1068
1069         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1070                            pf->stat_offsets_loaded,
1071                            &osd->rx_undersize, &nsd->rx_undersize);
1072         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1073                            pf->stat_offsets_loaded,
1074                            &osd->rx_fragments, &nsd->rx_fragments);
1075         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1076                            pf->stat_offsets_loaded,
1077                            &osd->rx_oversize, &nsd->rx_oversize);
1078         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1079                            pf->stat_offsets_loaded,
1080                            &osd->rx_jabber, &nsd->rx_jabber);
1081
1082         /* FDIR stats */
1083         i40e_stat_update32(hw,
1084                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1085                            pf->stat_offsets_loaded,
1086                            &osd->fd_atr_match, &nsd->fd_atr_match);
1087         i40e_stat_update32(hw,
1088                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1089                            pf->stat_offsets_loaded,
1090                            &osd->fd_sb_match, &nsd->fd_sb_match);
1091         i40e_stat_update32(hw,
1092                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1093                       pf->stat_offsets_loaded,
1094                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1095
1096         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1097         nsd->tx_lpi_status =
1098                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1099                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1100         nsd->rx_lpi_status =
1101                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1102                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1103         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1104                            pf->stat_offsets_loaded,
1105                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1106         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1107                            pf->stat_offsets_loaded,
1108                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1109
1110         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1111             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1112                 nsd->fd_sb_status = true;
1113         else
1114                 nsd->fd_sb_status = false;
1115
1116         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1117             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1118                 nsd->fd_atr_status = true;
1119         else
1120                 nsd->fd_atr_status = false;
1121
1122         pf->stat_offsets_loaded = true;
1123 }
1124
1125 /**
1126  * i40e_update_stats - Update the various statistics counters.
1127  * @vsi: the VSI to be updated
1128  *
1129  * Update the various stats for this VSI and its related entities.
1130  **/
1131 void i40e_update_stats(struct i40e_vsi *vsi)
1132 {
1133         struct i40e_pf *pf = vsi->back;
1134
1135         if (vsi == pf->vsi[pf->lan_vsi])
1136                 i40e_update_pf_stats(pf);
1137
1138         i40e_update_vsi_stats(vsi);
1139 #ifdef I40E_FCOE
1140         i40e_update_fcoe_stats(vsi);
1141 #endif
1142 }
1143
1144 /**
1145  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1146  * @vsi: the VSI to be searched
1147  * @macaddr: the MAC address
1148  * @vlan: the vlan
1149  * @is_vf: make sure its a VF filter, else doesn't matter
1150  * @is_netdev: make sure its a netdev filter, else doesn't matter
1151  *
1152  * Returns ptr to the filter object or NULL
1153  **/
1154 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1155                                                 u8 *macaddr, s16 vlan,
1156                                                 bool is_vf, bool is_netdev)
1157 {
1158         struct i40e_mac_filter *f;
1159
1160         if (!vsi || !macaddr)
1161                 return NULL;
1162
1163         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1164                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1165                     (vlan == f->vlan)    &&
1166                     (!is_vf || f->is_vf) &&
1167                     (!is_netdev || f->is_netdev))
1168                         return f;
1169         }
1170         return NULL;
1171 }
1172
1173 /**
1174  * i40e_find_mac - Find a mac addr in the macvlan filters list
1175  * @vsi: the VSI to be searched
1176  * @macaddr: the MAC address we are searching for
1177  * @is_vf: make sure its a VF filter, else doesn't matter
1178  * @is_netdev: make sure its a netdev filter, else doesn't matter
1179  *
1180  * Returns the first filter with the provided MAC address or NULL if
1181  * MAC address was not found
1182  **/
1183 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1184                                       bool is_vf, bool is_netdev)
1185 {
1186         struct i40e_mac_filter *f;
1187
1188         if (!vsi || !macaddr)
1189                 return NULL;
1190
1191         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1192                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1193                     (!is_vf || f->is_vf) &&
1194                     (!is_netdev || f->is_netdev))
1195                         return f;
1196         }
1197         return NULL;
1198 }
1199
1200 /**
1201  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1202  * @vsi: the VSI to be searched
1203  *
1204  * Returns true if VSI is in vlan mode or false otherwise
1205  **/
1206 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1207 {
1208         struct i40e_mac_filter *f;
1209
1210         /* Only -1 for all the filters denotes not in vlan mode
1211          * so we have to go through all the list in order to make sure
1212          */
1213         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1214                 if (f->vlan >= 0 || vsi->info.pvid)
1215                         return true;
1216         }
1217
1218         return false;
1219 }
1220
1221 /**
1222  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1223  * @vsi: the VSI to be searched
1224  * @macaddr: the mac address to be filtered
1225  * @is_vf: true if it is a VF
1226  * @is_netdev: true if it is a netdev
1227  *
1228  * Goes through all the macvlan filters and adds a
1229  * macvlan filter for each unique vlan that already exists
1230  *
1231  * Returns first filter found on success, else NULL
1232  **/
1233 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1234                                              bool is_vf, bool is_netdev)
1235 {
1236         struct i40e_mac_filter *f;
1237
1238         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1239                 if (vsi->info.pvid)
1240                         f->vlan = le16_to_cpu(vsi->info.pvid);
1241                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1242                                       is_vf, is_netdev)) {
1243                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1244                                              is_vf, is_netdev))
1245                                 return NULL;
1246                 }
1247         }
1248
1249         return list_first_entry_or_null(&vsi->mac_filter_list,
1250                                         struct i40e_mac_filter, list);
1251 }
1252
1253 /**
1254  * i40e_del_mac_all_vlan - Remove a MAC filter from all VLANS
1255  * @vsi: the VSI to be searched
1256  * @macaddr: the mac address to be removed
1257  * @is_vf: true if it is a VF
1258  * @is_netdev: true if it is a netdev
1259  *
1260  * Removes a given MAC address from a VSI, regardless of VLAN
1261  *
1262  * Returns 0 for success, or error
1263  **/
1264 int i40e_del_mac_all_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1265                           bool is_vf, bool is_netdev)
1266 {
1267         struct i40e_mac_filter *f = NULL;
1268         int changed = 0;
1269
1270         WARN(!spin_is_locked(&vsi->mac_filter_list_lock),
1271              "Missing mac_filter_list_lock\n");
1272         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1273                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1274                     (is_vf == f->is_vf) &&
1275                     (is_netdev == f->is_netdev)) {
1276                         f->counter--;
1277                         changed = 1;
1278                         if (f->counter == 0)
1279                                 f->state = I40E_FILTER_REMOVE;
1280                 }
1281         }
1282         if (changed) {
1283                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1284                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1285                 return 0;
1286         }
1287         return -ENOENT;
1288 }
1289
1290 /**
1291  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1292  * @vsi: the PF Main VSI - inappropriate for any other VSI
1293  * @macaddr: the MAC address
1294  *
1295  * Remove whatever filter the firmware set up so the driver can manage
1296  * its own filtering intelligently.
1297  **/
1298 static void i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1299 {
1300         struct i40e_aqc_remove_macvlan_element_data element;
1301         struct i40e_pf *pf = vsi->back;
1302
1303         /* Only appropriate for the PF main VSI */
1304         if (vsi->type != I40E_VSI_MAIN)
1305                 return;
1306
1307         memset(&element, 0, sizeof(element));
1308         ether_addr_copy(element.mac_addr, macaddr);
1309         element.vlan_tag = 0;
1310         /* Ignore error returns, some firmware does it this way... */
1311         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1312         i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1313
1314         memset(&element, 0, sizeof(element));
1315         ether_addr_copy(element.mac_addr, macaddr);
1316         element.vlan_tag = 0;
1317         /* ...and some firmware does it this way. */
1318         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1319                         I40E_AQC_MACVLAN_ADD_IGNORE_VLAN;
1320         i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1321 }
1322
1323 /**
1324  * i40e_add_filter - Add a mac/vlan filter to the VSI
1325  * @vsi: the VSI to be searched
1326  * @macaddr: the MAC address
1327  * @vlan: the vlan
1328  * @is_vf: make sure its a VF filter, else doesn't matter
1329  * @is_netdev: make sure its a netdev filter, else doesn't matter
1330  *
1331  * Returns ptr to the filter object or NULL when no memory available.
1332  *
1333  * NOTE: This function is expected to be called with mac_filter_list_lock
1334  * being held.
1335  **/
1336 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1337                                         u8 *macaddr, s16 vlan,
1338                                         bool is_vf, bool is_netdev)
1339 {
1340         struct i40e_mac_filter *f;
1341         int changed = false;
1342
1343         if (!vsi || !macaddr)
1344                 return NULL;
1345
1346         /* Do not allow broadcast filter to be added since broadcast filter
1347          * is added as part of add VSI for any newly created VSI except
1348          * FDIR VSI
1349          */
1350         if (is_broadcast_ether_addr(macaddr))
1351                 return NULL;
1352
1353         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1354         if (!f) {
1355                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1356                 if (!f)
1357                         goto add_filter_out;
1358
1359                 ether_addr_copy(f->macaddr, macaddr);
1360                 f->vlan = vlan;
1361                 /* If we're in overflow promisc mode, set the state directly
1362                  * to failed, so we don't bother to try sending the filter
1363                  * to the hardware.
1364                  */
1365                 if (test_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state))
1366                         f->state = I40E_FILTER_FAILED;
1367                 else
1368                         f->state = I40E_FILTER_NEW;
1369                 changed = true;
1370                 INIT_LIST_HEAD(&f->list);
1371                 list_add_tail(&f->list, &vsi->mac_filter_list);
1372         }
1373
1374         /* increment counter and add a new flag if needed */
1375         if (is_vf) {
1376                 if (!f->is_vf) {
1377                         f->is_vf = true;
1378                         f->counter++;
1379                 }
1380         } else if (is_netdev) {
1381                 if (!f->is_netdev) {
1382                         f->is_netdev = true;
1383                         f->counter++;
1384                 }
1385         } else {
1386                 f->counter++;
1387         }
1388
1389         if (changed) {
1390                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1391                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1392         }
1393
1394 add_filter_out:
1395         return f;
1396 }
1397
1398 /**
1399  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1400  * @vsi: the VSI to be searched
1401  * @macaddr: the MAC address
1402  * @vlan: the vlan
1403  * @is_vf: make sure it's a VF filter, else doesn't matter
1404  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1405  *
1406  * NOTE: This function is expected to be called with mac_filter_list_lock
1407  * being held.
1408  * ANOTHER NOTE: This function MUST be called from within the context of
1409  * the "safe" variants of any list iterators, e.g. list_for_each_entry_safe()
1410  * instead of list_for_each_entry().
1411  **/
1412 void i40e_del_filter(struct i40e_vsi *vsi,
1413                      u8 *macaddr, s16 vlan,
1414                      bool is_vf, bool is_netdev)
1415 {
1416         struct i40e_mac_filter *f;
1417
1418         if (!vsi || !macaddr)
1419                 return;
1420
1421         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1422         if (!f || f->counter == 0)
1423                 return;
1424
1425         if (is_vf) {
1426                 if (f->is_vf) {
1427                         f->is_vf = false;
1428                         f->counter--;
1429                 }
1430         } else if (is_netdev) {
1431                 if (f->is_netdev) {
1432                         f->is_netdev = false;
1433                         f->counter--;
1434                 }
1435         } else {
1436                 /* make sure we don't remove a filter in use by VF or netdev */
1437                 int min_f = 0;
1438
1439                 min_f += (f->is_vf ? 1 : 0);
1440                 min_f += (f->is_netdev ? 1 : 0);
1441
1442                 if (f->counter > min_f)
1443                         f->counter--;
1444         }
1445
1446         /* counter == 0 tells sync_filters_subtask to
1447          * remove the filter from the firmware's list
1448          */
1449         if (f->counter == 0) {
1450                 if ((f->state == I40E_FILTER_FAILED) ||
1451                     (f->state == I40E_FILTER_NEW)) {
1452                         /* this one never got added by the FW. Just remove it,
1453                          * no need to sync anything.
1454                          */
1455                         list_del(&f->list);
1456                         kfree(f);
1457                 } else {
1458                         f->state = I40E_FILTER_REMOVE;
1459                         vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1460                         vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1461                 }
1462         }
1463 }
1464
1465 /**
1466  * i40e_set_mac - NDO callback to set mac address
1467  * @netdev: network interface device structure
1468  * @p: pointer to an address structure
1469  *
1470  * Returns 0 on success, negative on failure
1471  **/
1472 #ifdef I40E_FCOE
1473 int i40e_set_mac(struct net_device *netdev, void *p)
1474 #else
1475 static int i40e_set_mac(struct net_device *netdev, void *p)
1476 #endif
1477 {
1478         struct i40e_netdev_priv *np = netdev_priv(netdev);
1479         struct i40e_vsi *vsi = np->vsi;
1480         struct i40e_pf *pf = vsi->back;
1481         struct i40e_hw *hw = &pf->hw;
1482         struct sockaddr *addr = p;
1483
1484         if (!is_valid_ether_addr(addr->sa_data))
1485                 return -EADDRNOTAVAIL;
1486
1487         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1488                 netdev_info(netdev, "already using mac address %pM\n",
1489                             addr->sa_data);
1490                 return 0;
1491         }
1492
1493         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1494             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1495                 return -EADDRNOTAVAIL;
1496
1497         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1498                 netdev_info(netdev, "returning to hw mac address %pM\n",
1499                             hw->mac.addr);
1500         else
1501                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1502
1503         spin_lock_bh(&vsi->mac_filter_list_lock);
1504         i40e_del_mac_all_vlan(vsi, netdev->dev_addr, false, true);
1505         i40e_put_mac_in_vlan(vsi, addr->sa_data, false, true);
1506         spin_unlock_bh(&vsi->mac_filter_list_lock);
1507         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1508         if (vsi->type == I40E_VSI_MAIN) {
1509                 i40e_status ret;
1510
1511                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1512                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1513                                                 addr->sa_data, NULL);
1514                 if (ret)
1515                         netdev_info(netdev, "Ignoring error from firmware on LAA update, status %s, AQ ret %s\n",
1516                                     i40e_stat_str(hw, ret),
1517                                     i40e_aq_str(hw, hw->aq.asq_last_status));
1518         }
1519
1520         /* schedule our worker thread which will take care of
1521          * applying the new filter changes
1522          */
1523         i40e_service_event_schedule(vsi->back);
1524         return 0;
1525 }
1526
1527 /**
1528  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1529  * @vsi: the VSI being setup
1530  * @ctxt: VSI context structure
1531  * @enabled_tc: Enabled TCs bitmap
1532  * @is_add: True if called before Add VSI
1533  *
1534  * Setup VSI queue mapping for enabled traffic classes.
1535  **/
1536 #ifdef I40E_FCOE
1537 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1538                               struct i40e_vsi_context *ctxt,
1539                               u8 enabled_tc,
1540                               bool is_add)
1541 #else
1542 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1543                                      struct i40e_vsi_context *ctxt,
1544                                      u8 enabled_tc,
1545                                      bool is_add)
1546 #endif
1547 {
1548         struct i40e_pf *pf = vsi->back;
1549         u16 sections = 0;
1550         u8 netdev_tc = 0;
1551         u16 numtc = 0;
1552         u16 qcount;
1553         u8 offset;
1554         u16 qmap;
1555         int i;
1556         u16 num_tc_qps = 0;
1557
1558         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1559         offset = 0;
1560
1561         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1562                 /* Find numtc from enabled TC bitmap */
1563                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1564                         if (enabled_tc & BIT(i)) /* TC is enabled */
1565                                 numtc++;
1566                 }
1567                 if (!numtc) {
1568                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1569                         numtc = 1;
1570                 }
1571         } else {
1572                 /* At least TC0 is enabled in case of non-DCB case */
1573                 numtc = 1;
1574         }
1575
1576         vsi->tc_config.numtc = numtc;
1577         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1578         /* Number of queues per enabled TC */
1579         qcount = vsi->alloc_queue_pairs;
1580
1581         num_tc_qps = qcount / numtc;
1582         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1583
1584         /* Setup queue offset/count for all TCs for given VSI */
1585         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1586                 /* See if the given TC is enabled for the given VSI */
1587                 if (vsi->tc_config.enabled_tc & BIT(i)) {
1588                         /* TC is enabled */
1589                         int pow, num_qps;
1590
1591                         switch (vsi->type) {
1592                         case I40E_VSI_MAIN:
1593                                 qcount = min_t(int, pf->alloc_rss_size,
1594                                                num_tc_qps);
1595                                 break;
1596 #ifdef I40E_FCOE
1597                         case I40E_VSI_FCOE:
1598                                 qcount = num_tc_qps;
1599                                 break;
1600 #endif
1601                         case I40E_VSI_FDIR:
1602                         case I40E_VSI_SRIOV:
1603                         case I40E_VSI_VMDQ2:
1604                         default:
1605                                 qcount = num_tc_qps;
1606                                 WARN_ON(i != 0);
1607                                 break;
1608                         }
1609                         vsi->tc_config.tc_info[i].qoffset = offset;
1610                         vsi->tc_config.tc_info[i].qcount = qcount;
1611
1612                         /* find the next higher power-of-2 of num queue pairs */
1613                         num_qps = qcount;
1614                         pow = 0;
1615                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1616                                 pow++;
1617                                 num_qps >>= 1;
1618                         }
1619
1620                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1621                         qmap =
1622                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1623                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1624
1625                         offset += qcount;
1626                 } else {
1627                         /* TC is not enabled so set the offset to
1628                          * default queue and allocate one queue
1629                          * for the given TC.
1630                          */
1631                         vsi->tc_config.tc_info[i].qoffset = 0;
1632                         vsi->tc_config.tc_info[i].qcount = 1;
1633                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1634
1635                         qmap = 0;
1636                 }
1637                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1638         }
1639
1640         /* Set actual Tx/Rx queue pairs */
1641         vsi->num_queue_pairs = offset;
1642         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1643                 if (vsi->req_queue_pairs > 0)
1644                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1645                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1646                         vsi->num_queue_pairs = pf->num_lan_msix;
1647         }
1648
1649         /* Scheduler section valid can only be set for ADD VSI */
1650         if (is_add) {
1651                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1652
1653                 ctxt->info.up_enable_bits = enabled_tc;
1654         }
1655         if (vsi->type == I40E_VSI_SRIOV) {
1656                 ctxt->info.mapping_flags |=
1657                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1658                 for (i = 0; i < vsi->num_queue_pairs; i++)
1659                         ctxt->info.queue_mapping[i] =
1660                                                cpu_to_le16(vsi->base_queue + i);
1661         } else {
1662                 ctxt->info.mapping_flags |=
1663                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1664                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1665         }
1666         ctxt->info.valid_sections |= cpu_to_le16(sections);
1667 }
1668
1669 /**
1670  * i40e_set_rx_mode - NDO callback to set the netdev filters
1671  * @netdev: network interface device structure
1672  **/
1673 #ifdef I40E_FCOE
1674 void i40e_set_rx_mode(struct net_device *netdev)
1675 #else
1676 static void i40e_set_rx_mode(struct net_device *netdev)
1677 #endif
1678 {
1679         struct i40e_netdev_priv *np = netdev_priv(netdev);
1680         struct i40e_mac_filter *f, *ftmp;
1681         struct i40e_vsi *vsi = np->vsi;
1682         struct netdev_hw_addr *uca;
1683         struct netdev_hw_addr *mca;
1684         struct netdev_hw_addr *ha;
1685
1686         spin_lock_bh(&vsi->mac_filter_list_lock);
1687
1688         /* add addr if not already in the filter list */
1689         netdev_for_each_uc_addr(uca, netdev) {
1690                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1691                         if (i40e_is_vsi_in_vlan(vsi))
1692                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1693                                                      false, true);
1694                         else
1695                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1696                                                 false, true);
1697                 }
1698         }
1699
1700         netdev_for_each_mc_addr(mca, netdev) {
1701                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1702                         if (i40e_is_vsi_in_vlan(vsi))
1703                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1704                                                      false, true);
1705                         else
1706                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1707                                                 false, true);
1708                 }
1709         }
1710
1711         /* remove filter if not in netdev list */
1712         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1713
1714                 if (!f->is_netdev)
1715                         continue;
1716
1717                 netdev_for_each_mc_addr(mca, netdev)
1718                         if (ether_addr_equal(mca->addr, f->macaddr))
1719                                 goto bottom_of_search_loop;
1720
1721                 netdev_for_each_uc_addr(uca, netdev)
1722                         if (ether_addr_equal(uca->addr, f->macaddr))
1723                                 goto bottom_of_search_loop;
1724
1725                 for_each_dev_addr(netdev, ha)
1726                         if (ether_addr_equal(ha->addr, f->macaddr))
1727                                 goto bottom_of_search_loop;
1728
1729                 /* f->macaddr wasn't found in uc, mc, or ha list so delete it */
1730                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1731
1732 bottom_of_search_loop:
1733                 continue;
1734         }
1735         spin_unlock_bh(&vsi->mac_filter_list_lock);
1736
1737         /* check for other flag changes */
1738         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1739                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1740                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1741         }
1742
1743         /* schedule our worker thread which will take care of
1744          * applying the new filter changes
1745          */
1746         i40e_service_event_schedule(vsi->back);
1747 }
1748
1749 /**
1750  * i40e_undo_del_filter_entries - Undo the changes made to MAC filter entries
1751  * @vsi: pointer to vsi struct
1752  * @from: Pointer to list which contains MAC filter entries - changes to
1753  *        those entries needs to be undone.
1754  *
1755  * MAC filter entries from list were slated to be removed from device.
1756  **/
1757 static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
1758                                          struct list_head *from)
1759 {
1760         struct i40e_mac_filter *f, *ftmp;
1761
1762         list_for_each_entry_safe(f, ftmp, from, list) {
1763                 /* Move the element back into MAC filter list*/
1764                 list_move_tail(&f->list, &vsi->mac_filter_list);
1765         }
1766 }
1767
1768 /**
1769  * i40e_update_filter_state - Update filter state based on return data
1770  * from firmware
1771  * @count: Number of filters added
1772  * @add_list: return data from fw
1773  * @head: pointer to first filter in current batch
1774  * @aq_err: status from fw
1775  *
1776  * MAC filter entries from list were slated to be added to device. Returns
1777  * number of successful filters. Note that 0 does NOT mean success!
1778  **/
1779 static int
1780 i40e_update_filter_state(int count,
1781                          struct i40e_aqc_add_macvlan_element_data *add_list,
1782                          struct i40e_mac_filter *add_head, int aq_err)
1783 {
1784         int retval = 0;
1785         int i;
1786
1787
1788         if (!aq_err) {
1789                 retval = count;
1790                 /* Everything's good, mark all filters active. */
1791                 for (i = 0; i < count ; i++) {
1792                         add_head->state = I40E_FILTER_ACTIVE;
1793                         add_head = list_next_entry(add_head, list);
1794                 }
1795         } else if (aq_err == I40E_AQ_RC_ENOSPC) {
1796                 /* Device ran out of filter space. Check the return value
1797                  * for each filter to see which ones are active.
1798                  */
1799                 for (i = 0; i < count ; i++) {
1800                         if (add_list[i].match_method ==
1801                             I40E_AQC_MM_ERR_NO_RES) {
1802                                 add_head->state = I40E_FILTER_FAILED;
1803                         } else {
1804                                 add_head->state = I40E_FILTER_ACTIVE;
1805                                 retval++;
1806                         }
1807                         add_head = list_next_entry(add_head, list);
1808                 }
1809         } else {
1810                 /* Some other horrible thing happened, fail all filters */
1811                 retval = 0;
1812                 for (i = 0; i < count ; i++) {
1813                         add_head->state = I40E_FILTER_FAILED;
1814                         add_head = list_next_entry(add_head, list);
1815                 }
1816         }
1817         return retval;
1818 }
1819
1820 /**
1821  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1822  * @vsi: ptr to the VSI
1823  *
1824  * Push any outstanding VSI filter changes through the AdminQ.
1825  *
1826  * Returns 0 or error value
1827  **/
1828 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1829 {
1830         struct i40e_mac_filter *f, *ftmp, *add_head = NULL;
1831         struct list_head tmp_add_list, tmp_del_list;
1832         struct i40e_hw *hw = &vsi->back->hw;
1833         bool promisc_changed = false;
1834         char vsi_name[16] = "PF";
1835         int filter_list_len = 0;
1836         u32 changed_flags = 0;
1837         i40e_status aq_ret = 0;
1838         int retval = 0;
1839         struct i40e_pf *pf;
1840         int num_add = 0;
1841         int num_del = 0;
1842         int aq_err = 0;
1843         u16 cmd_flags;
1844         int list_size;
1845         int fcnt;
1846
1847         /* empty array typed pointers, kcalloc later */
1848         struct i40e_aqc_add_macvlan_element_data *add_list;
1849         struct i40e_aqc_remove_macvlan_element_data *del_list;
1850
1851         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1852                 usleep_range(1000, 2000);
1853         pf = vsi->back;
1854
1855         if (vsi->netdev) {
1856                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1857                 vsi->current_netdev_flags = vsi->netdev->flags;
1858         }
1859
1860         INIT_LIST_HEAD(&tmp_add_list);
1861         INIT_LIST_HEAD(&tmp_del_list);
1862
1863         if (vsi->type == I40E_VSI_SRIOV)
1864                 snprintf(vsi_name, sizeof(vsi_name) - 1, "VF %d", vsi->vf_id);
1865         else if (vsi->type != I40E_VSI_MAIN)
1866                 snprintf(vsi_name, sizeof(vsi_name) - 1, "vsi %d", vsi->seid);
1867
1868         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1869                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1870
1871                 spin_lock_bh(&vsi->mac_filter_list_lock);
1872                 /* Create a list of filters to delete. */
1873                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1874                         if (f->state == I40E_FILTER_REMOVE) {
1875                                 WARN_ON(f->counter != 0);
1876                                 /* Move the element into temporary del_list */
1877                                 list_move_tail(&f->list, &tmp_del_list);
1878                                 vsi->active_filters--;
1879                         }
1880                         if (f->state == I40E_FILTER_NEW) {
1881                                 WARN_ON(f->counter == 0);
1882                                 /* Move the element into temporary add_list */
1883                                 list_move_tail(&f->list, &tmp_add_list);
1884                         }
1885                 }
1886                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1887         }
1888
1889         /* Now process 'del_list' outside the lock */
1890         if (!list_empty(&tmp_del_list)) {
1891                 filter_list_len = hw->aq.asq_buf_size /
1892                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1893                 list_size = filter_list_len *
1894                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1895                 del_list = kzalloc(list_size, GFP_ATOMIC);
1896                 if (!del_list) {
1897                         /* Undo VSI's MAC filter entry element updates */
1898                         spin_lock_bh(&vsi->mac_filter_list_lock);
1899                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1900                         spin_unlock_bh(&vsi->mac_filter_list_lock);
1901                         retval = -ENOMEM;
1902                         goto out;
1903                 }
1904
1905                 list_for_each_entry_safe(f, ftmp, &tmp_del_list, list) {
1906                         cmd_flags = 0;
1907
1908                         /* add to delete list */
1909                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1910                         if (f->vlan == I40E_VLAN_ANY) {
1911                                 del_list[num_del].vlan_tag = 0;
1912                                 cmd_flags |= I40E_AQC_MACVLAN_ADD_IGNORE_VLAN;
1913                         } else {
1914                                 del_list[num_del].vlan_tag =
1915                                         cpu_to_le16((u16)(f->vlan));
1916                         }
1917
1918                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1919                         del_list[num_del].flags = cmd_flags;
1920                         num_del++;
1921
1922                         /* flush a full buffer */
1923                         if (num_del == filter_list_len) {
1924                                 aq_ret = i40e_aq_remove_macvlan(hw, vsi->seid,
1925                                                                 del_list,
1926                                                                 num_del, NULL);
1927                                 aq_err = hw->aq.asq_last_status;
1928                                 num_del = 0;
1929                                 memset(del_list, 0, list_size);
1930
1931                                 /* Explicitly ignore and do not report when
1932                                  * firmware returns ENOENT.
1933                                  */
1934                                 if (aq_ret && !(aq_err == I40E_AQ_RC_ENOENT)) {
1935                                         retval = -EIO;
1936                                         dev_info(&pf->pdev->dev,
1937                                                  "ignoring delete macvlan error on %s, err %s, aq_err %s\n",
1938                                                  vsi_name,
1939                                                  i40e_stat_str(hw, aq_ret),
1940                                                  i40e_aq_str(hw, aq_err));
1941                                 }
1942                         }
1943                         /* Release memory for MAC filter entries which were
1944                          * synced up with HW.
1945                          */
1946                         list_del(&f->list);
1947                         kfree(f);
1948                 }
1949
1950                 if (num_del) {
1951                         aq_ret = i40e_aq_remove_macvlan(hw, vsi->seid, del_list,
1952                                                         num_del, NULL);
1953                         aq_err = hw->aq.asq_last_status;
1954                         num_del = 0;
1955
1956                         /* Explicitly ignore and do not report when firmware
1957                          * returns ENOENT.
1958                          */
1959                         if (aq_ret && !(aq_err == I40E_AQ_RC_ENOENT)) {
1960                                 retval = -EIO;
1961                                 dev_info(&pf->pdev->dev,
1962                                          "ignoring delete macvlan error on %s, err %s aq_err %s\n",
1963                                          vsi_name,
1964                                          i40e_stat_str(hw, aq_ret),
1965                                          i40e_aq_str(hw, aq_err));
1966                         }
1967                 }
1968
1969                 kfree(del_list);
1970                 del_list = NULL;
1971         }
1972
1973         if (!list_empty(&tmp_add_list)) {
1974                 /* Do all the adds now. */
1975                 filter_list_len = hw->aq.asq_buf_size /
1976                                sizeof(struct i40e_aqc_add_macvlan_element_data);
1977                 list_size = filter_list_len *
1978                                sizeof(struct i40e_aqc_add_macvlan_element_data);
1979                 add_list = kzalloc(list_size, GFP_ATOMIC);
1980                 if (!add_list) {
1981                         retval = -ENOMEM;
1982                         goto out;
1983                 }
1984                 num_add = 0;
1985                 list_for_each_entry(f, &tmp_add_list, list) {
1986                         if (test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1987                                      &vsi->state)) {
1988                                 f->state = I40E_FILTER_FAILED;
1989                                 continue;
1990                         }
1991                         /* add to add array */
1992                         if (num_add == 0)
1993                                 add_head = f;
1994                         cmd_flags = 0;
1995                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
1996                         if (f->vlan == I40E_VLAN_ANY) {
1997                                 add_list[num_add].vlan_tag = 0;
1998                                 cmd_flags |= I40E_AQC_MACVLAN_ADD_IGNORE_VLAN;
1999                         } else {
2000                                 add_list[num_add].vlan_tag =
2001                                         cpu_to_le16((u16)(f->vlan));
2002                         }
2003                         add_list[num_add].queue_number = 0;
2004                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
2005                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
2006                         num_add++;
2007
2008                         /* flush a full buffer */
2009                         if (num_add == filter_list_len) {
2010                                 aq_ret = i40e_aq_add_macvlan(hw, vsi->seid,
2011                                                              add_list, num_add,
2012                                                              NULL);
2013                                 aq_err = hw->aq.asq_last_status;
2014                                 fcnt = i40e_update_filter_state(num_add,
2015                                                                 add_list,
2016                                                                 add_head,
2017                                                                 aq_ret);
2018                                 vsi->active_filters += fcnt;
2019
2020                                 if (fcnt != num_add) {
2021                                         promisc_changed = true;
2022                                         set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2023                                                 &vsi->state);
2024                                         vsi->promisc_threshold =
2025                                                 (vsi->active_filters * 3) / 4;
2026                                         dev_warn(&pf->pdev->dev,
2027                                                  "Error %s adding RX filters on %s, promiscuous mode forced on\n",
2028                                                  i40e_aq_str(hw, aq_err),
2029                                                  vsi_name);
2030                                 }
2031                                 memset(add_list, 0, list_size);
2032                                 num_add = 0;
2033                         }
2034                 }
2035                 if (num_add) {
2036                         aq_ret = i40e_aq_add_macvlan(hw, vsi->seid,
2037                                                      add_list, num_add, NULL);
2038                         aq_err = hw->aq.asq_last_status;
2039                         fcnt = i40e_update_filter_state(num_add, add_list,
2040                                                         add_head, aq_ret);
2041                         vsi->active_filters += fcnt;
2042                         if (fcnt != num_add) {
2043                                 promisc_changed = true;
2044                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2045                                         &vsi->state);
2046                                 vsi->promisc_threshold =
2047                                                 (vsi->active_filters * 3) / 4;
2048                                 dev_warn(&pf->pdev->dev,
2049                                          "Error %s adding RX filters on %s, promiscuous mode forced on\n",
2050                                          i40e_aq_str(hw, aq_err), vsi_name);
2051                         }
2052                 }
2053                 /* Now move all of the filters from the temp add list back to
2054                  * the VSI's list.
2055                  */
2056                 spin_lock_bh(&vsi->mac_filter_list_lock);
2057                 list_for_each_entry_safe(f, ftmp, &tmp_add_list, list) {
2058                         list_move_tail(&f->list, &vsi->mac_filter_list);
2059                 }
2060                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2061                 kfree(add_list);
2062                 add_list = NULL;
2063         }
2064
2065         /* Check to see if we can drop out of overflow promiscuous mode. */
2066         if (test_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state) &&
2067             (vsi->active_filters < vsi->promisc_threshold)) {
2068                 int failed_count = 0;
2069                 /* See if we have any failed filters. We can't drop out of
2070                  * promiscuous until these have all been deleted.
2071                  */
2072                 spin_lock_bh(&vsi->mac_filter_list_lock);
2073                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2074                         if (f->state == I40E_FILTER_FAILED)
2075                                 failed_count++;
2076                 }
2077                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2078                 if (!failed_count) {
2079                         dev_info(&pf->pdev->dev,
2080                                  "filter logjam cleared on %s, leaving overflow promiscuous mode\n",
2081                                  vsi_name);
2082                         clear_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
2083                         promisc_changed = true;
2084                         vsi->promisc_threshold = 0;
2085                 }
2086         }
2087
2088         /* if the VF is not trusted do not do promisc */
2089         if ((vsi->type == I40E_VSI_SRIOV) && !pf->vf[vsi->vf_id].trusted) {
2090                 clear_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
2091                 goto out;
2092         }
2093
2094         /* check for changes in promiscuous modes */
2095         if (changed_flags & IFF_ALLMULTI) {
2096                 bool cur_multipromisc;
2097
2098                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
2099                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
2100                                                                vsi->seid,
2101                                                                cur_multipromisc,
2102                                                                NULL);
2103                 if (aq_ret) {
2104                         retval = i40e_aq_rc_to_posix(aq_ret,
2105                                                      hw->aq.asq_last_status);
2106                         dev_info(&pf->pdev->dev,
2107                                  "set multi promisc failed on %s, err %s aq_err %s\n",
2108                                  vsi_name,
2109                                  i40e_stat_str(hw, aq_ret),
2110                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2111                 }
2112         }
2113         if ((changed_flags & IFF_PROMISC) ||
2114             (promisc_changed &&
2115              test_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state))) {
2116                 bool cur_promisc;
2117
2118                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
2119                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2120                                         &vsi->state));
2121                 if ((vsi->type == I40E_VSI_MAIN) &&
2122                     (pf->lan_veb != I40E_NO_VEB) &&
2123                     !(pf->flags & I40E_FLAG_MFP_ENABLED)) {
2124                         /* set defport ON for Main VSI instead of true promisc
2125                          * this way we will get all unicast/multicast and VLAN
2126                          * promisc behavior but will not get VF or VMDq traffic
2127                          * replicated on the Main VSI.
2128                          */
2129                         if (pf->cur_promisc != cur_promisc) {
2130                                 pf->cur_promisc = cur_promisc;
2131                                 if (cur_promisc)
2132                                         aq_ret =
2133                                               i40e_aq_set_default_vsi(hw,
2134                                                                       vsi->seid,
2135                                                                       NULL);
2136                                 else
2137                                         aq_ret =
2138                                             i40e_aq_clear_default_vsi(hw,
2139                                                                       vsi->seid,
2140                                                                       NULL);
2141                                 if (aq_ret) {
2142                                         retval = i40e_aq_rc_to_posix(aq_ret,
2143                                                         hw->aq.asq_last_status);
2144                                         dev_info(&pf->pdev->dev,
2145                                                  "Set default VSI failed on %s, err %s, aq_err %s\n",
2146                                                  vsi_name,
2147                                                  i40e_stat_str(hw, aq_ret),
2148                                                  i40e_aq_str(hw,
2149                                                      hw->aq.asq_last_status));
2150                                 }
2151                         }
2152                 } else {
2153                         aq_ret = i40e_aq_set_vsi_unicast_promiscuous(
2154                                                           hw,
2155                                                           vsi->seid,
2156                                                           cur_promisc, NULL,
2157                                                           true);
2158                         if (aq_ret) {
2159                                 retval =
2160                                 i40e_aq_rc_to_posix(aq_ret,
2161                                                     hw->aq.asq_last_status);
2162                                 dev_info(&pf->pdev->dev,
2163                                          "set unicast promisc failed on %s, err %s, aq_err %s\n",
2164                                          vsi_name,
2165                                          i40e_stat_str(hw, aq_ret),
2166                                          i40e_aq_str(hw,
2167                                                      hw->aq.asq_last_status));
2168                         }
2169                         aq_ret = i40e_aq_set_vsi_multicast_promiscuous(
2170                                                           hw,
2171                                                           vsi->seid,
2172                                                           cur_promisc, NULL);
2173                         if (aq_ret) {
2174                                 retval =
2175                                 i40e_aq_rc_to_posix(aq_ret,
2176                                                     hw->aq.asq_last_status);
2177                                 dev_info(&pf->pdev->dev,
2178                                          "set multicast promisc failed on %s, err %s, aq_err %s\n",
2179                                          vsi_name,
2180                                          i40e_stat_str(hw, aq_ret),
2181                                          i40e_aq_str(hw,
2182                                                      hw->aq.asq_last_status));
2183                         }
2184                 }
2185                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
2186                                                    vsi->seid,
2187                                                    cur_promisc, NULL);
2188                 if (aq_ret) {
2189                         retval = i40e_aq_rc_to_posix(aq_ret,
2190                                                      pf->hw.aq.asq_last_status);
2191                         dev_info(&pf->pdev->dev,
2192                                  "set brdcast promisc failed, err %s, aq_err %s\n",
2193                                          i40e_stat_str(hw, aq_ret),
2194                                          i40e_aq_str(hw,
2195                                                      hw->aq.asq_last_status));
2196                 }
2197         }
2198 out:
2199         /* if something went wrong then set the changed flag so we try again */
2200         if (retval)
2201                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2202
2203         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2204         return retval;
2205 }
2206
2207 /**
2208  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2209  * @pf: board private structure
2210  **/
2211 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2212 {
2213         int v;
2214
2215         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2216                 return;
2217         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2218
2219         for (v = 0; v < pf->num_alloc_vsi; v++) {
2220                 if (pf->vsi[v] &&
2221                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED)) {
2222                         int ret = i40e_sync_vsi_filters(pf->vsi[v]);
2223
2224                         if (ret) {
2225                                 /* come back and try again later */
2226                                 pf->flags |= I40E_FLAG_FILTER_SYNC;
2227                                 break;
2228                         }
2229                 }
2230         }
2231 }
2232
2233 /**
2234  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2235  * @netdev: network interface device structure
2236  * @new_mtu: new value for maximum frame size
2237  *
2238  * Returns 0 on success, negative on failure
2239  **/
2240 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2241 {
2242         struct i40e_netdev_priv *np = netdev_priv(netdev);
2243         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2244         struct i40e_vsi *vsi = np->vsi;
2245
2246         /* MTU < 68 is an error and causes problems on some kernels */
2247         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2248                 return -EINVAL;
2249
2250         netdev_info(netdev, "changing MTU from %d to %d\n",
2251                     netdev->mtu, new_mtu);
2252         netdev->mtu = new_mtu;
2253         if (netif_running(netdev))
2254                 i40e_vsi_reinit_locked(vsi);
2255         i40e_notify_client_of_l2_param_changes(vsi);
2256         return 0;
2257 }
2258
2259 /**
2260  * i40e_ioctl - Access the hwtstamp interface
2261  * @netdev: network interface device structure
2262  * @ifr: interface request data
2263  * @cmd: ioctl command
2264  **/
2265 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2266 {
2267         struct i40e_netdev_priv *np = netdev_priv(netdev);
2268         struct i40e_pf *pf = np->vsi->back;
2269
2270         switch (cmd) {
2271         case SIOCGHWTSTAMP:
2272                 return i40e_ptp_get_ts_config(pf, ifr);
2273         case SIOCSHWTSTAMP:
2274                 return i40e_ptp_set_ts_config(pf, ifr);
2275         default:
2276                 return -EOPNOTSUPP;
2277         }
2278 }
2279
2280 /**
2281  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2282  * @vsi: the vsi being adjusted
2283  **/
2284 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2285 {
2286         struct i40e_vsi_context ctxt;
2287         i40e_status ret;
2288
2289         if ((vsi->info.valid_sections &
2290              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2291             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2292                 return;  /* already enabled */
2293
2294         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2295         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2296                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2297
2298         ctxt.seid = vsi->seid;
2299         ctxt.info = vsi->info;
2300         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2301         if (ret) {
2302                 dev_info(&vsi->back->pdev->dev,
2303                          "update vlan stripping failed, err %s aq_err %s\n",
2304                          i40e_stat_str(&vsi->back->hw, ret),
2305                          i40e_aq_str(&vsi->back->hw,
2306                                      vsi->back->hw.aq.asq_last_status));
2307         }
2308 }
2309
2310 /**
2311  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2312  * @vsi: the vsi being adjusted
2313  **/
2314 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2315 {
2316         struct i40e_vsi_context ctxt;
2317         i40e_status ret;
2318
2319         if ((vsi->info.valid_sections &
2320              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2321             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2322              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2323                 return;  /* already disabled */
2324
2325         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2326         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2327                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2328
2329         ctxt.seid = vsi->seid;
2330         ctxt.info = vsi->info;
2331         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2332         if (ret) {
2333                 dev_info(&vsi->back->pdev->dev,
2334                          "update vlan stripping failed, err %s aq_err %s\n",
2335                          i40e_stat_str(&vsi->back->hw, ret),
2336                          i40e_aq_str(&vsi->back->hw,
2337                                      vsi->back->hw.aq.asq_last_status));
2338         }
2339 }
2340
2341 /**
2342  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2343  * @netdev: network interface to be adjusted
2344  * @features: netdev features to test if VLAN offload is enabled or not
2345  **/
2346 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2347 {
2348         struct i40e_netdev_priv *np = netdev_priv(netdev);
2349         struct i40e_vsi *vsi = np->vsi;
2350
2351         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2352                 i40e_vlan_stripping_enable(vsi);
2353         else
2354                 i40e_vlan_stripping_disable(vsi);
2355 }
2356
2357 /**
2358  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2359  * @vsi: the vsi being configured
2360  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2361  **/
2362 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2363 {
2364         struct i40e_mac_filter *f, *ftmp, *add_f;
2365         bool is_netdev, is_vf;
2366
2367         is_vf = (vsi->type == I40E_VSI_SRIOV);
2368         is_netdev = !!(vsi->netdev);
2369
2370         /* Locked once because all functions invoked below iterates list*/
2371         spin_lock_bh(&vsi->mac_filter_list_lock);
2372
2373         if (is_netdev) {
2374                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2375                                         is_vf, is_netdev);
2376                 if (!add_f) {
2377                         dev_info(&vsi->back->pdev->dev,
2378                                  "Could not add vlan filter %d for %pM\n",
2379                                  vid, vsi->netdev->dev_addr);
2380                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2381                         return -ENOMEM;
2382                 }
2383         }
2384
2385         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
2386                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2387                 if (!add_f) {
2388                         dev_info(&vsi->back->pdev->dev,
2389                                  "Could not add vlan filter %d for %pM\n",
2390                                  vid, f->macaddr);
2391                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2392                         return -ENOMEM;
2393                 }
2394         }
2395
2396         /* Now if we add a vlan tag, make sure to check if it is the first
2397          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2398          * with 0, so we now accept untagged and specified tagged traffic
2399          * (and not all tags along with untagged)
2400          */
2401         if (vid > 0) {
2402                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2403                                                   I40E_VLAN_ANY,
2404                                                   is_vf, is_netdev)) {
2405                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2406                                         I40E_VLAN_ANY, is_vf, is_netdev);
2407                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2408                                                 is_vf, is_netdev);
2409                         if (!add_f) {
2410                                 dev_info(&vsi->back->pdev->dev,
2411                                          "Could not add filter 0 for %pM\n",
2412                                          vsi->netdev->dev_addr);
2413                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2414                                 return -ENOMEM;
2415                         }
2416                 }
2417         }
2418
2419         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2420         if (vid > 0 && !vsi->info.pvid) {
2421                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
2422                         if (!i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2423                                               is_vf, is_netdev))
2424                                 continue;
2425                         i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2426                                         is_vf, is_netdev);
2427                         add_f = i40e_add_filter(vsi, f->macaddr,
2428                                                 0, is_vf, is_netdev);
2429                         if (!add_f) {
2430                                 dev_info(&vsi->back->pdev->dev,
2431                                          "Could not add filter 0 for %pM\n",
2432                                         f->macaddr);
2433                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2434                                 return -ENOMEM;
2435                         }
2436                 }
2437         }
2438
2439         spin_unlock_bh(&vsi->mac_filter_list_lock);
2440
2441         /* schedule our worker thread which will take care of
2442          * applying the new filter changes
2443          */
2444         i40e_service_event_schedule(vsi->back);
2445         return 0;
2446 }
2447
2448 /**
2449  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2450  * @vsi: the vsi being configured
2451  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2452  *
2453  * Return: 0 on success or negative otherwise
2454  **/
2455 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2456 {
2457         struct net_device *netdev = vsi->netdev;
2458         struct i40e_mac_filter *f, *ftmp, *add_f;
2459         bool is_vf, is_netdev;
2460         int filter_count = 0;
2461
2462         is_vf = (vsi->type == I40E_VSI_SRIOV);
2463         is_netdev = !!(netdev);
2464
2465         /* Locked once because all functions invoked below iterates list */
2466         spin_lock_bh(&vsi->mac_filter_list_lock);
2467
2468         if (is_netdev)
2469                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2470
2471         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
2472                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2473
2474         /* go through all the filters for this VSI and if there is only
2475          * vid == 0 it means there are no other filters, so vid 0 must
2476          * be replaced with -1. This signifies that we should from now
2477          * on accept any traffic (with any tag present, or untagged)
2478          */
2479         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2480                 if (is_netdev) {
2481                         if (f->vlan &&
2482                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2483                                 filter_count++;
2484                 }
2485
2486                 if (f->vlan)
2487                         filter_count++;
2488         }
2489
2490         if (!filter_count && is_netdev) {
2491                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2492                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2493                                     is_vf, is_netdev);
2494                 if (!f) {
2495                         dev_info(&vsi->back->pdev->dev,
2496                                  "Could not add filter %d for %pM\n",
2497                                  I40E_VLAN_ANY, netdev->dev_addr);
2498                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2499                         return -ENOMEM;
2500                 }
2501         }
2502
2503         if (!filter_count) {
2504                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
2505                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2506                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2507                                                 is_vf, is_netdev);
2508                         if (!add_f) {
2509                                 dev_info(&vsi->back->pdev->dev,
2510                                          "Could not add filter %d for %pM\n",
2511                                          I40E_VLAN_ANY, f->macaddr);
2512                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2513                                 return -ENOMEM;
2514                         }
2515                 }
2516         }
2517
2518         spin_unlock_bh(&vsi->mac_filter_list_lock);
2519
2520         /* schedule our worker thread which will take care of
2521          * applying the new filter changes
2522          */
2523         i40e_service_event_schedule(vsi->back);
2524         return 0;
2525 }
2526
2527 /**
2528  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2529  * @netdev: network interface to be adjusted
2530  * @vid: vlan id to be added
2531  *
2532  * net_device_ops implementation for adding vlan ids
2533  **/
2534 #ifdef I40E_FCOE
2535 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2536                          __always_unused __be16 proto, u16 vid)
2537 #else
2538 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2539                                 __always_unused __be16 proto, u16 vid)
2540 #endif
2541 {
2542         struct i40e_netdev_priv *np = netdev_priv(netdev);
2543         struct i40e_vsi *vsi = np->vsi;
2544         int ret = 0;
2545
2546         if (vid > 4095)
2547                 return -EINVAL;
2548
2549         /* If the network stack called us with vid = 0 then
2550          * it is asking to receive priority tagged packets with
2551          * vlan id 0.  Our HW receives them by default when configured
2552          * to receive untagged packets so there is no need to add an
2553          * extra filter for vlan 0 tagged packets.
2554          */
2555         if (vid)
2556                 ret = i40e_vsi_add_vlan(vsi, vid);
2557
2558         if (!ret && (vid < VLAN_N_VID))
2559                 set_bit(vid, vsi->active_vlans);
2560
2561         return ret;
2562 }
2563
2564 /**
2565  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2566  * @netdev: network interface to be adjusted
2567  * @vid: vlan id to be removed
2568  *
2569  * net_device_ops implementation for removing vlan ids
2570  **/
2571 #ifdef I40E_FCOE
2572 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2573                           __always_unused __be16 proto, u16 vid)
2574 #else
2575 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2576                                  __always_unused __be16 proto, u16 vid)
2577 #endif
2578 {
2579         struct i40e_netdev_priv *np = netdev_priv(netdev);
2580         struct i40e_vsi *vsi = np->vsi;
2581
2582         /* return code is ignored as there is nothing a user
2583          * can do about failure to remove and a log message was
2584          * already printed from the other function
2585          */
2586         i40e_vsi_kill_vlan(vsi, vid);
2587
2588         clear_bit(vid, vsi->active_vlans);
2589
2590         return 0;
2591 }
2592
2593 /**
2594  * i40e_macaddr_init - explicitly write the mac address filters
2595  *
2596  * @vsi: pointer to the vsi
2597  * @macaddr: the MAC address
2598  *
2599  * This is needed when the macaddr has been obtained by other
2600  * means than the default, e.g., from Open Firmware or IDPROM.
2601  * Returns 0 on success, negative on failure
2602  **/
2603 static int i40e_macaddr_init(struct i40e_vsi *vsi, u8 *macaddr)
2604 {
2605         int ret;
2606         struct i40e_aqc_add_macvlan_element_data element;
2607
2608         ret = i40e_aq_mac_address_write(&vsi->back->hw,
2609                                         I40E_AQC_WRITE_TYPE_LAA_WOL,
2610                                         macaddr, NULL);
2611         if (ret) {
2612                 dev_info(&vsi->back->pdev->dev,
2613                          "Addr change for VSI failed: %d\n", ret);
2614                 return -EADDRNOTAVAIL;
2615         }
2616
2617         memset(&element, 0, sizeof(element));
2618         ether_addr_copy(element.mac_addr, macaddr);
2619         element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
2620         ret = i40e_aq_add_macvlan(&vsi->back->hw, vsi->seid, &element, 1, NULL);
2621         if (ret) {
2622                 dev_info(&vsi->back->pdev->dev,
2623                          "add filter failed err %s aq_err %s\n",
2624                          i40e_stat_str(&vsi->back->hw, ret),
2625                          i40e_aq_str(&vsi->back->hw,
2626                                      vsi->back->hw.aq.asq_last_status));
2627         }
2628         return ret;
2629 }
2630
2631 /**
2632  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2633  * @vsi: the vsi being brought back up
2634  **/
2635 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2636 {
2637         u16 vid;
2638
2639         if (!vsi->netdev)
2640                 return;
2641
2642         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2643
2644         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2645                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2646                                      vid);
2647 }
2648
2649 /**
2650  * i40e_vsi_add_pvid - Add pvid for the VSI
2651  * @vsi: the vsi being adjusted
2652  * @vid: the vlan id to set as a PVID
2653  **/
2654 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2655 {
2656         struct i40e_vsi_context ctxt;
2657         i40e_status ret;
2658
2659         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2660         vsi->info.pvid = cpu_to_le16(vid);
2661         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2662                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2663                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2664
2665         ctxt.seid = vsi->seid;
2666         ctxt.info = vsi->info;
2667         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2668         if (ret) {
2669                 dev_info(&vsi->back->pdev->dev,
2670                          "add pvid failed, err %s aq_err %s\n",
2671                          i40e_stat_str(&vsi->back->hw, ret),
2672                          i40e_aq_str(&vsi->back->hw,
2673                                      vsi->back->hw.aq.asq_last_status));
2674                 return -ENOENT;
2675         }
2676
2677         return 0;
2678 }
2679
2680 /**
2681  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2682  * @vsi: the vsi being adjusted
2683  *
2684  * Just use the vlan_rx_register() service to put it back to normal
2685  **/
2686 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2687 {
2688         i40e_vlan_stripping_disable(vsi);
2689
2690         vsi->info.pvid = 0;
2691 }
2692
2693 /**
2694  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2695  * @vsi: ptr to the VSI
2696  *
2697  * If this function returns with an error, then it's possible one or
2698  * more of the rings is populated (while the rest are not).  It is the
2699  * callers duty to clean those orphaned rings.
2700  *
2701  * Return 0 on success, negative on failure
2702  **/
2703 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2704 {
2705         int i, err = 0;
2706
2707         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2708                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2709
2710         return err;
2711 }
2712
2713 /**
2714  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2715  * @vsi: ptr to the VSI
2716  *
2717  * Free VSI's transmit software resources
2718  **/
2719 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2720 {
2721         int i;
2722
2723         if (!vsi->tx_rings)
2724                 return;
2725
2726         for (i = 0; i < vsi->num_queue_pairs; i++)
2727                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2728                         i40e_free_tx_resources(vsi->tx_rings[i]);
2729 }
2730
2731 /**
2732  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2733  * @vsi: ptr to the VSI
2734  *
2735  * If this function returns with an error, then it's possible one or
2736  * more of the rings is populated (while the rest are not).  It is the
2737  * callers duty to clean those orphaned rings.
2738  *
2739  * Return 0 on success, negative on failure
2740  **/
2741 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2742 {
2743         int i, err = 0;
2744
2745         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2746                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2747 #ifdef I40E_FCOE
2748         i40e_fcoe_setup_ddp_resources(vsi);
2749 #endif
2750         return err;
2751 }
2752
2753 /**
2754  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2755  * @vsi: ptr to the VSI
2756  *
2757  * Free all receive software resources
2758  **/
2759 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2760 {
2761         int i;
2762
2763         if (!vsi->rx_rings)
2764                 return;
2765
2766         for (i = 0; i < vsi->num_queue_pairs; i++)
2767                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2768                         i40e_free_rx_resources(vsi->rx_rings[i]);
2769 #ifdef I40E_FCOE
2770         i40e_fcoe_free_ddp_resources(vsi);
2771 #endif
2772 }
2773
2774 /**
2775  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2776  * @ring: The Tx ring to configure
2777  *
2778  * This enables/disables XPS for a given Tx descriptor ring
2779  * based on the TCs enabled for the VSI that ring belongs to.
2780  **/
2781 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2782 {
2783         struct i40e_vsi *vsi = ring->vsi;
2784         cpumask_var_t mask;
2785
2786         if (!ring->q_vector || !ring->netdev)
2787                 return;
2788
2789         /* Single TC mode enable XPS */
2790         if (vsi->tc_config.numtc <= 1) {
2791                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2792                         netif_set_xps_queue(ring->netdev,
2793                                             &ring->q_vector->affinity_mask,
2794                                             ring->queue_index);
2795         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2796                 /* Disable XPS to allow selection based on TC */
2797                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2798                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2799                 free_cpumask_var(mask);
2800         }
2801
2802         /* schedule our worker thread which will take care of
2803          * applying the new filter changes
2804          */
2805         i40e_service_event_schedule(vsi->back);
2806 }
2807
2808 /**
2809  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2810  * @ring: The Tx ring to configure
2811  *
2812  * Configure the Tx descriptor ring in the HMC context.
2813  **/
2814 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2815 {
2816         struct i40e_vsi *vsi = ring->vsi;
2817         u16 pf_q = vsi->base_queue + ring->queue_index;
2818         struct i40e_hw *hw = &vsi->back->hw;
2819         struct i40e_hmc_obj_txq tx_ctx;
2820         i40e_status err = 0;
2821         u32 qtx_ctl = 0;
2822
2823         /* some ATR related tx ring init */
2824         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2825                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2826                 ring->atr_count = 0;
2827         } else {
2828                 ring->atr_sample_rate = 0;
2829         }
2830
2831         /* configure XPS */
2832         i40e_config_xps_tx_ring(ring);
2833
2834         /* clear the context structure first */
2835         memset(&tx_ctx, 0, sizeof(tx_ctx));
2836
2837         tx_ctx.new_context = 1;
2838         tx_ctx.base = (ring->dma / 128);
2839         tx_ctx.qlen = ring->count;
2840         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2841                                                I40E_FLAG_FD_ATR_ENABLED));
2842 #ifdef I40E_FCOE
2843         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2844 #endif
2845         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2846         /* FDIR VSI tx ring can still use RS bit and writebacks */
2847         if (vsi->type != I40E_VSI_FDIR)
2848                 tx_ctx.head_wb_ena = 1;
2849         tx_ctx.head_wb_addr = ring->dma +
2850                               (ring->count * sizeof(struct i40e_tx_desc));
2851
2852         /* As part of VSI creation/update, FW allocates certain
2853          * Tx arbitration queue sets for each TC enabled for
2854          * the VSI. The FW returns the handles to these queue
2855          * sets as part of the response buffer to Add VSI,
2856          * Update VSI, etc. AQ commands. It is expected that
2857          * these queue set handles be associated with the Tx
2858          * queues by the driver as part of the TX queue context
2859          * initialization. This has to be done regardless of
2860          * DCB as by default everything is mapped to TC0.
2861          */
2862         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2863         tx_ctx.rdylist_act = 0;
2864
2865         /* clear the context in the HMC */
2866         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2867         if (err) {
2868                 dev_info(&vsi->back->pdev->dev,
2869                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2870                          ring->queue_index, pf_q, err);
2871                 return -ENOMEM;
2872         }
2873
2874         /* set the context in the HMC */
2875         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2876         if (err) {
2877                 dev_info(&vsi->back->pdev->dev,
2878                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2879                          ring->queue_index, pf_q, err);
2880                 return -ENOMEM;
2881         }
2882
2883         /* Now associate this queue with this PCI function */
2884         if (vsi->type == I40E_VSI_VMDQ2) {
2885                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2886                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2887                            I40E_QTX_CTL_VFVM_INDX_MASK;
2888         } else {
2889                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2890         }
2891
2892         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2893                     I40E_QTX_CTL_PF_INDX_MASK);
2894         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2895         i40e_flush(hw);
2896
2897         /* cache tail off for easier writes later */
2898         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2899
2900         return 0;
2901 }
2902
2903 /**
2904  * i40e_configure_rx_ring - Configure a receive ring context
2905  * @ring: The Rx ring to configure
2906  *
2907  * Configure the Rx descriptor ring in the HMC context.
2908  **/
2909 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2910 {
2911         struct i40e_vsi *vsi = ring->vsi;
2912         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2913         u16 pf_q = vsi->base_queue + ring->queue_index;
2914         struct i40e_hw *hw = &vsi->back->hw;
2915         struct i40e_hmc_obj_rxq rx_ctx;
2916         i40e_status err = 0;
2917
2918         ring->state = 0;
2919
2920         /* clear the context structure first */
2921         memset(&rx_ctx, 0, sizeof(rx_ctx));
2922
2923         ring->rx_buf_len = vsi->rx_buf_len;
2924
2925         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2926
2927         rx_ctx.base = (ring->dma / 128);
2928         rx_ctx.qlen = ring->count;
2929
2930         /* use 32 byte descriptors */
2931         rx_ctx.dsize = 1;
2932
2933         /* descriptor type is always zero
2934          * rx_ctx.dtype = 0;
2935          */
2936         rx_ctx.hsplit_0 = 0;
2937
2938         rx_ctx.rxmax = min_t(u16, vsi->max_frame, chain_len * ring->rx_buf_len);
2939         if (hw->revision_id == 0)
2940                 rx_ctx.lrxqthresh = 0;
2941         else
2942                 rx_ctx.lrxqthresh = 2;
2943         rx_ctx.crcstrip = 1;
2944         rx_ctx.l2tsel = 1;
2945         /* this controls whether VLAN is stripped from inner headers */
2946         rx_ctx.showiv = 0;
2947 #ifdef I40E_FCOE
2948         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2949 #endif
2950         /* set the prefena field to 1 because the manual says to */
2951         rx_ctx.prefena = 1;
2952
2953         /* clear the context in the HMC */
2954         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2955         if (err) {
2956                 dev_info(&vsi->back->pdev->dev,
2957                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2958                          ring->queue_index, pf_q, err);
2959                 return -ENOMEM;
2960         }
2961
2962         /* set the context in the HMC */
2963         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2964         if (err) {
2965                 dev_info(&vsi->back->pdev->dev,
2966                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2967                          ring->queue_index, pf_q, err);
2968                 return -ENOMEM;
2969         }
2970
2971         /* cache tail for quicker writes, and clear the reg before use */
2972         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2973         writel(0, ring->tail);
2974
2975         i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
2976
2977         return 0;
2978 }
2979
2980 /**
2981  * i40e_vsi_configure_tx - Configure the VSI for Tx
2982  * @vsi: VSI structure describing this set of rings and resources
2983  *
2984  * Configure the Tx VSI for operation.
2985  **/
2986 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2987 {
2988         int err = 0;
2989         u16 i;
2990
2991         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2992                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2993
2994         return err;
2995 }
2996
2997 /**
2998  * i40e_vsi_configure_rx - Configure the VSI for Rx
2999  * @vsi: the VSI being configured
3000  *
3001  * Configure the Rx VSI for operation.
3002  **/
3003 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
3004 {
3005         int err = 0;
3006         u16 i;
3007
3008         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
3009                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
3010                                + ETH_FCS_LEN + VLAN_HLEN;
3011         else
3012                 vsi->max_frame = I40E_RXBUFFER_2048;
3013
3014         vsi->rx_buf_len = I40E_RXBUFFER_2048;
3015
3016 #ifdef I40E_FCOE
3017         /* setup rx buffer for FCoE */
3018         if ((vsi->type == I40E_VSI_FCOE) &&
3019             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
3020                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
3021                 vsi->max_frame = I40E_RXBUFFER_3072;
3022         }
3023
3024 #endif /* I40E_FCOE */
3025         /* round up for the chip's needs */
3026         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
3027                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
3028
3029         /* set up individual rings */
3030         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3031                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
3032
3033         return err;
3034 }
3035
3036 /**
3037  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
3038  * @vsi: ptr to the VSI
3039  **/
3040 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
3041 {
3042         struct i40e_ring *tx_ring, *rx_ring;
3043         u16 qoffset, qcount;
3044         int i, n;
3045
3046         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
3047                 /* Reset the TC information */
3048                 for (i = 0; i < vsi->num_queue_pairs; i++) {
3049                         rx_ring = vsi->rx_rings[i];
3050                         tx_ring = vsi->tx_rings[i];
3051                         rx_ring->dcb_tc = 0;
3052                         tx_ring->dcb_tc = 0;
3053                 }
3054         }
3055
3056         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
3057                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
3058                         continue;
3059
3060                 qoffset = vsi->tc_config.tc_info[n].qoffset;
3061                 qcount = vsi->tc_config.tc_info[n].qcount;
3062                 for (i = qoffset; i < (qoffset + qcount); i++) {
3063                         rx_ring = vsi->rx_rings[i];
3064                         tx_ring = vsi->tx_rings[i];
3065                         rx_ring->dcb_tc = n;
3066                         tx_ring->dcb_tc = n;
3067                 }
3068         }
3069 }
3070
3071 /**
3072  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
3073  * @vsi: ptr to the VSI
3074  **/
3075 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
3076 {
3077         struct i40e_pf *pf = vsi->back;
3078         int err;
3079
3080         if (vsi->netdev)
3081                 i40e_set_rx_mode(vsi->netdev);
3082
3083         if (!!(pf->flags & I40E_FLAG_PF_MAC)) {
3084                 err = i40e_macaddr_init(vsi, pf->hw.mac.addr);
3085                 if (err) {
3086                         dev_warn(&pf->pdev->dev,
3087                                  "could not set up macaddr; err %d\n", err);
3088                 }
3089         }
3090 }
3091
3092 /**
3093  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
3094  * @vsi: Pointer to the targeted VSI
3095  *
3096  * This function replays the hlist on the hw where all the SB Flow Director
3097  * filters were saved.
3098  **/
3099 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
3100 {
3101         struct i40e_fdir_filter *filter;
3102         struct i40e_pf *pf = vsi->back;
3103         struct hlist_node *node;
3104
3105         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3106                 return;
3107
3108         hlist_for_each_entry_safe(filter, node,
3109                                   &pf->fdir_filter_list, fdir_node) {
3110                 i40e_add_del_fdir(vsi, filter, true);
3111         }
3112 }
3113
3114 /**
3115  * i40e_vsi_configure - Set up the VSI for action
3116  * @vsi: the VSI being configured
3117  **/
3118 static int i40e_vsi_configure(struct i40e_vsi *vsi)
3119 {
3120         int err;
3121
3122         i40e_set_vsi_rx_mode(vsi);
3123         i40e_restore_vlan(vsi);
3124         i40e_vsi_config_dcb_rings(vsi);
3125         err = i40e_vsi_configure_tx(vsi);
3126         if (!err)
3127                 err = i40e_vsi_configure_rx(vsi);
3128
3129         return err;
3130 }
3131
3132 /**
3133  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
3134  * @vsi: the VSI being configured
3135  **/
3136 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
3137 {
3138         struct i40e_pf *pf = vsi->back;
3139         struct i40e_hw *hw = &pf->hw;
3140         u16 vector;
3141         int i, q;
3142         u32 qp;
3143
3144         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
3145          * and PFINT_LNKLSTn registers, e.g.:
3146          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
3147          */
3148         qp = vsi->base_queue;
3149         vector = vsi->base_vector;
3150         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3151                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
3152
3153                 q_vector->itr_countdown = ITR_COUNTDOWN_START;
3154                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[i]->rx_itr_setting);
3155                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
3156                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3157                      q_vector->rx.itr);
3158                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[i]->tx_itr_setting);
3159                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
3160                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3161                      q_vector->tx.itr);
3162                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
3163                      INTRL_USEC_TO_REG(vsi->int_rate_limit));
3164
3165                 /* Linked list for the queuepairs assigned to this vector */
3166                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
3167                 for (q = 0; q < q_vector->num_ringpairs; q++) {
3168                         u32 val;
3169
3170                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3171                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
3172                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
3173                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
3174                               (I40E_QUEUE_TYPE_TX
3175                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
3176
3177                         wr32(hw, I40E_QINT_RQCTL(qp), val);
3178
3179                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3180                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
3181                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3182                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
3183                               (I40E_QUEUE_TYPE_RX
3184                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3185
3186                         /* Terminate the linked list */
3187                         if (q == (q_vector->num_ringpairs - 1))
3188                                 val |= (I40E_QUEUE_END_OF_LIST
3189                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3190
3191                         wr32(hw, I40E_QINT_TQCTL(qp), val);
3192                         qp++;
3193                 }
3194         }
3195
3196         i40e_flush(hw);
3197 }
3198
3199 /**
3200  * i40e_enable_misc_int_causes - enable the non-queue interrupts
3201  * @hw: ptr to the hardware info
3202  **/
3203 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
3204 {
3205         struct i40e_hw *hw = &pf->hw;
3206         u32 val;
3207
3208         /* clear things first */
3209         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
3210         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
3211
3212         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
3213               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
3214               I40E_PFINT_ICR0_ENA_GRST_MASK          |
3215               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
3216               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
3217               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
3218               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
3219               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3220
3221         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
3222                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3223
3224         if (pf->flags & I40E_FLAG_PTP)
3225                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3226
3227         wr32(hw, I40E_PFINT_ICR0_ENA, val);
3228
3229         /* SW_ITR_IDX = 0, but don't change INTENA */
3230         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
3231                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
3232
3233         /* OTHER_ITR_IDX = 0 */
3234         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
3235 }
3236
3237 /**
3238  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3239  * @vsi: the VSI being configured
3240  **/
3241 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3242 {
3243         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3244         struct i40e_pf *pf = vsi->back;
3245         struct i40e_hw *hw = &pf->hw;
3246         u32 val;
3247
3248         /* set the ITR configuration */
3249         q_vector->itr_countdown = ITR_COUNTDOWN_START;
3250         q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[0]->rx_itr_setting);
3251         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3252         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3253         q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[0]->tx_itr_setting);
3254         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3255         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3256
3257         i40e_enable_misc_int_causes(pf);
3258
3259         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3260         wr32(hw, I40E_PFINT_LNKLST0, 0);
3261
3262         /* Associate the queue pair to the vector and enable the queue int */
3263         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3264               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3265               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3266
3267         wr32(hw, I40E_QINT_RQCTL(0), val);
3268
3269         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3270               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3271               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3272
3273         wr32(hw, I40E_QINT_TQCTL(0), val);
3274         i40e_flush(hw);
3275 }
3276
3277 /**
3278  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3279  * @pf: board private structure
3280  **/
3281 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3282 {
3283         struct i40e_hw *hw = &pf->hw;
3284
3285         wr32(hw, I40E_PFINT_DYN_CTL0,
3286              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3287         i40e_flush(hw);
3288 }
3289
3290 /**
3291  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3292  * @pf: board private structure
3293  * @clearpba: true when all pending interrupt events should be cleared
3294  **/
3295 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf, bool clearpba)
3296 {
3297         struct i40e_hw *hw = &pf->hw;
3298         u32 val;
3299
3300         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3301               (clearpba ? I40E_PFINT_DYN_CTL0_CLEARPBA_MASK : 0) |
3302               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3303
3304         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3305         i40e_flush(hw);
3306 }
3307
3308 /**
3309  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3310  * @irq: interrupt number
3311  * @data: pointer to a q_vector
3312  **/
3313 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3314 {
3315         struct i40e_q_vector *q_vector = data;
3316
3317         if (!q_vector->tx.ring && !q_vector->rx.ring)
3318                 return IRQ_HANDLED;
3319
3320         napi_schedule_irqoff(&q_vector->napi);
3321
3322         return IRQ_HANDLED;
3323 }
3324
3325 /**
3326  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3327  * @vsi: the VSI being configured
3328  * @basename: name for the vector
3329  *
3330  * Allocates MSI-X vectors and requests interrupts from the kernel.
3331  **/
3332 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3333 {
3334         int q_vectors = vsi->num_q_vectors;
3335         struct i40e_pf *pf = vsi->back;
3336         int base = vsi->base_vector;
3337         int rx_int_idx = 0;
3338         int tx_int_idx = 0;
3339         int vector, err;
3340
3341         for (vector = 0; vector < q_vectors; vector++) {
3342                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3343
3344                 if (q_vector->tx.ring && q_vector->rx.ring) {
3345                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3346                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3347                         tx_int_idx++;
3348                 } else if (q_vector->rx.ring) {
3349                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3350                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3351                 } else if (q_vector->tx.ring) {
3352                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3353                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3354                 } else {
3355                         /* skip this unused q_vector */
3356                         continue;
3357                 }
3358                 err = request_irq(pf->msix_entries[base + vector].vector,
3359                                   vsi->irq_handler,
3360                                   0,
3361                                   q_vector->name,
3362                                   q_vector);
3363                 if (err) {
3364                         dev_info(&pf->pdev->dev,
3365                                  "MSIX request_irq failed, error: %d\n", err);
3366                         goto free_queue_irqs;
3367                 }
3368                 /* assign the mask for this irq */
3369                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3370                                       &q_vector->affinity_mask);
3371         }
3372
3373         vsi->irqs_ready = true;
3374         return 0;
3375
3376 free_queue_irqs:
3377         while (vector) {
3378                 vector--;
3379                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3380                                       NULL);
3381                 free_irq(pf->msix_entries[base + vector].vector,
3382                          &(vsi->q_vectors[vector]));
3383         }
3384         return err;
3385 }
3386
3387 /**
3388  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3389  * @vsi: the VSI being un-configured
3390  **/
3391 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3392 {
3393         struct i40e_pf *pf = vsi->back;
3394         struct i40e_hw *hw = &pf->hw;
3395         int base = vsi->base_vector;
3396         int i;
3397
3398         for (i = 0; i < vsi->num_queue_pairs; i++) {
3399                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3400                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3401         }
3402
3403         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3404                 for (i = vsi->base_vector;
3405                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3406                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3407
3408                 i40e_flush(hw);
3409                 for (i = 0; i < vsi->num_q_vectors; i++)
3410                         synchronize_irq(pf->msix_entries[i + base].vector);
3411         } else {
3412                 /* Legacy and MSI mode - this stops all interrupt handling */
3413                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3414                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3415                 i40e_flush(hw);
3416                 synchronize_irq(pf->pdev->irq);
3417         }
3418 }
3419
3420 /**
3421  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3422  * @vsi: the VSI being configured
3423  **/
3424 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3425 {
3426         struct i40e_pf *pf = vsi->back;
3427         int i;
3428
3429         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3430                 for (i = 0; i < vsi->num_q_vectors; i++)
3431                         i40e_irq_dynamic_enable(vsi, i);
3432         } else {
3433                 i40e_irq_dynamic_enable_icr0(pf, true);
3434         }
3435
3436         i40e_flush(&pf->hw);
3437         return 0;
3438 }
3439
3440 /**
3441  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3442  * @pf: board private structure
3443  **/
3444 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3445 {
3446         /* Disable ICR 0 */
3447         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3448         i40e_flush(&pf->hw);
3449 }
3450
3451 /**
3452  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3453  * @irq: interrupt number
3454  * @data: pointer to a q_vector
3455  *
3456  * This is the handler used for all MSI/Legacy interrupts, and deals
3457  * with both queue and non-queue interrupts.  This is also used in
3458  * MSIX mode to handle the non-queue interrupts.
3459  **/
3460 static irqreturn_t i40e_intr(int irq, void *data)
3461 {
3462         struct i40e_pf *pf = (struct i40e_pf *)data;
3463         struct i40e_hw *hw = &pf->hw;
3464         irqreturn_t ret = IRQ_NONE;
3465         u32 icr0, icr0_remaining;
3466         u32 val, ena_mask;
3467
3468         icr0 = rd32(hw, I40E_PFINT_ICR0);
3469         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3470
3471         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3472         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3473                 goto enable_intr;
3474
3475         /* if interrupt but no bits showing, must be SWINT */
3476         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3477             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3478                 pf->sw_int_count++;
3479
3480         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3481             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3482                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3483                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3484                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3485         }
3486
3487         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3488         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3489                 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
3490                 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3491
3492                 /* We do not have a way to disarm Queue causes while leaving
3493                  * interrupt enabled for all other causes, ideally
3494                  * interrupt should be disabled while we are in NAPI but
3495                  * this is not a performance path and napi_schedule()
3496                  * can deal with rescheduling.
3497                  */
3498                 if (!test_bit(__I40E_DOWN, &pf->state))
3499                         napi_schedule_irqoff(&q_vector->napi);
3500         }
3501
3502         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3503                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3504                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3505                 i40e_debug(&pf->hw, I40E_DEBUG_NVM, "AdminQ event\n");
3506         }
3507
3508         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3509                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3510                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3511         }
3512
3513         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3514                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3515                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3516         }
3517
3518         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3519                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3520                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3521                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3522                 val = rd32(hw, I40E_GLGEN_RSTAT);
3523                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3524                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3525                 if (val == I40E_RESET_CORER) {
3526                         pf->corer_count++;
3527                 } else if (val == I40E_RESET_GLOBR) {
3528                         pf->globr_count++;
3529                 } else if (val == I40E_RESET_EMPR) {
3530                         pf->empr_count++;
3531                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3532                 }
3533         }
3534
3535         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3536                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3537                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3538                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3539                          rd32(hw, I40E_PFHMC_ERRORINFO),
3540                          rd32(hw, I40E_PFHMC_ERRORDATA));
3541         }
3542
3543         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3544                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3545
3546                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3547                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3548                         i40e_ptp_tx_hwtstamp(pf);
3549                 }
3550         }
3551
3552         /* If a critical error is pending we have no choice but to reset the
3553          * device.
3554          * Report and mask out any remaining unexpected interrupts.
3555          */
3556         icr0_remaining = icr0 & ena_mask;
3557         if (icr0_remaining) {
3558                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3559                          icr0_remaining);
3560                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3561                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3562                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3563                         dev_info(&pf->pdev->dev, "device will be reset\n");
3564                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3565                         i40e_service_event_schedule(pf);
3566                 }
3567                 ena_mask &= ~icr0_remaining;
3568         }
3569         ret = IRQ_HANDLED;
3570
3571 enable_intr:
3572         /* re-enable interrupt causes */
3573         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3574         if (!test_bit(__I40E_DOWN, &pf->state)) {
3575                 i40e_service_event_schedule(pf);
3576                 i40e_irq_dynamic_enable_icr0(pf, false);
3577         }
3578
3579         return ret;
3580 }
3581
3582 /**
3583  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3584  * @tx_ring:  tx ring to clean
3585  * @budget:   how many cleans we're allowed
3586  *
3587  * Returns true if there's any budget left (e.g. the clean is finished)
3588  **/
3589 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3590 {
3591         struct i40e_vsi *vsi = tx_ring->vsi;
3592         u16 i = tx_ring->next_to_clean;
3593         struct i40e_tx_buffer *tx_buf;
3594         struct i40e_tx_desc *tx_desc;
3595
3596         tx_buf = &tx_ring->tx_bi[i];
3597         tx_desc = I40E_TX_DESC(tx_ring, i);
3598         i -= tx_ring->count;
3599
3600         do {
3601                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3602
3603                 /* if next_to_watch is not set then there is no work pending */
3604                 if (!eop_desc)
3605                         break;
3606
3607                 /* prevent any other reads prior to eop_desc */
3608                 read_barrier_depends();
3609
3610                 /* if the descriptor isn't done, no work yet to do */
3611                 if (!(eop_desc->cmd_type_offset_bsz &
3612                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3613                         break;
3614
3615                 /* clear next_to_watch to prevent false hangs */
3616                 tx_buf->next_to_watch = NULL;
3617
3618                 tx_desc->buffer_addr = 0;
3619                 tx_desc->cmd_type_offset_bsz = 0;
3620                 /* move past filter desc */
3621                 tx_buf++;
3622                 tx_desc++;
3623                 i++;
3624                 if (unlikely(!i)) {
3625                         i -= tx_ring->count;
3626                         tx_buf = tx_ring->tx_bi;
3627                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3628                 }
3629                 /* unmap skb header data */
3630                 dma_unmap_single(tx_ring->dev,
3631                                  dma_unmap_addr(tx_buf, dma),
3632                                  dma_unmap_len(tx_buf, len),
3633                                  DMA_TO_DEVICE);
3634                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3635                         kfree(tx_buf->raw_buf);
3636
3637                 tx_buf->raw_buf = NULL;
3638                 tx_buf->tx_flags = 0;
3639                 tx_buf->next_to_watch = NULL;
3640                 dma_unmap_len_set(tx_buf, len, 0);
3641                 tx_desc->buffer_addr = 0;
3642                 tx_desc->cmd_type_offset_bsz = 0;
3643
3644                 /* move us past the eop_desc for start of next FD desc */
3645                 tx_buf++;
3646                 tx_desc++;
3647                 i++;
3648                 if (unlikely(!i)) {
3649                         i -= tx_ring->count;
3650                         tx_buf = tx_ring->tx_bi;
3651                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3652                 }
3653
3654                 /* update budget accounting */
3655                 budget--;
3656         } while (likely(budget));
3657
3658         i += tx_ring->count;
3659         tx_ring->next_to_clean = i;
3660
3661         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
3662                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3663
3664         return budget > 0;
3665 }
3666
3667 /**
3668  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3669  * @irq: interrupt number
3670  * @data: pointer to a q_vector
3671  **/
3672 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3673 {
3674         struct i40e_q_vector *q_vector = data;
3675         struct i40e_vsi *vsi;
3676
3677         if (!q_vector->tx.ring)
3678                 return IRQ_HANDLED;
3679
3680         vsi = q_vector->tx.ring->vsi;
3681         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3682
3683         return IRQ_HANDLED;
3684 }
3685
3686 /**
3687  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3688  * @vsi: the VSI being configured
3689  * @v_idx: vector index
3690  * @qp_idx: queue pair index
3691  **/
3692 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3693 {
3694         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3695         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3696         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3697
3698         tx_ring->q_vector = q_vector;
3699         tx_ring->next = q_vector->tx.ring;
3700         q_vector->tx.ring = tx_ring;
3701         q_vector->tx.count++;
3702
3703         rx_ring->q_vector = q_vector;
3704         rx_ring->next = q_vector->rx.ring;
3705         q_vector->rx.ring = rx_ring;
3706         q_vector->rx.count++;
3707 }
3708
3709 /**
3710  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3711  * @vsi: the VSI being configured
3712  *
3713  * This function maps descriptor rings to the queue-specific vectors
3714  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3715  * one vector per queue pair, but on a constrained vector budget, we
3716  * group the queue pairs as "efficiently" as possible.
3717  **/
3718 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3719 {
3720         int qp_remaining = vsi->num_queue_pairs;
3721         int q_vectors = vsi->num_q_vectors;
3722         int num_ringpairs;
3723         int v_start = 0;
3724         int qp_idx = 0;
3725
3726         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3727          * group them so there are multiple queues per vector.
3728          * It is also important to go through all the vectors available to be
3729          * sure that if we don't use all the vectors, that the remaining vectors
3730          * are cleared. This is especially important when decreasing the
3731          * number of queues in use.
3732          */
3733         for (; v_start < q_vectors; v_start++) {
3734                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3735
3736                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3737
3738                 q_vector->num_ringpairs = num_ringpairs;
3739
3740                 q_vector->rx.count = 0;
3741                 q_vector->tx.count = 0;
3742                 q_vector->rx.ring = NULL;
3743                 q_vector->tx.ring = NULL;
3744
3745                 while (num_ringpairs--) {
3746                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3747                         qp_idx++;
3748                         qp_remaining--;
3749                 }
3750         }
3751 }
3752
3753 /**
3754  * i40e_vsi_request_irq - Request IRQ from the OS
3755  * @vsi: the VSI being configured
3756  * @basename: name for the vector
3757  **/
3758 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3759 {
3760         struct i40e_pf *pf = vsi->back;
3761         int err;
3762
3763         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3764                 err = i40e_vsi_request_irq_msix(vsi, basename);
3765         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3766                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3767                                   pf->int_name, pf);
3768         else
3769                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3770                                   pf->int_name, pf);
3771
3772         if (err)
3773                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3774
3775         return err;
3776 }
3777
3778 #ifdef CONFIG_NET_POLL_CONTROLLER
3779 /**
3780  * i40e_netpoll - A Polling 'interrupt' handler
3781  * @netdev: network interface device structure
3782  *
3783  * This is used by netconsole to send skbs without having to re-enable
3784  * interrupts.  It's not called while the normal interrupt routine is executing.
3785  **/
3786 #ifdef I40E_FCOE
3787 void i40e_netpoll(struct net_device *netdev)
3788 #else
3789 static void i40e_netpoll(struct net_device *netdev)
3790 #endif
3791 {
3792         struct i40e_netdev_priv *np = netdev_priv(netdev);
3793         struct i40e_vsi *vsi = np->vsi;
3794         struct i40e_pf *pf = vsi->back;
3795         int i;
3796
3797         /* if interface is down do nothing */
3798         if (test_bit(__I40E_DOWN, &vsi->state))
3799                 return;
3800
3801         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3802                 for (i = 0; i < vsi->num_q_vectors; i++)
3803                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3804         } else {
3805                 i40e_intr(pf->pdev->irq, netdev);
3806         }
3807 }
3808 #endif
3809
3810 /**
3811  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3812  * @pf: the PF being configured
3813  * @pf_q: the PF queue
3814  * @enable: enable or disable state of the queue
3815  *
3816  * This routine will wait for the given Tx queue of the PF to reach the
3817  * enabled or disabled state.
3818  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3819  * multiple retries; else will return 0 in case of success.
3820  **/
3821 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3822 {
3823         int i;
3824         u32 tx_reg;
3825
3826         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3827                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3828                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3829                         break;
3830
3831                 usleep_range(10, 20);
3832         }
3833         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3834                 return -ETIMEDOUT;
3835
3836         return 0;
3837 }
3838
3839 /**
3840  * i40e_vsi_control_tx - Start or stop a VSI's rings
3841  * @vsi: the VSI being configured
3842  * @enable: start or stop the rings
3843  **/
3844 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3845 {
3846         struct i40e_pf *pf = vsi->back;
3847         struct i40e_hw *hw = &pf->hw;
3848         int i, j, pf_q, ret = 0;
3849         u32 tx_reg;
3850
3851         pf_q = vsi->base_queue;
3852         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3853
3854                 /* warn the TX unit of coming changes */
3855                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3856                 if (!enable)
3857                         usleep_range(10, 20);
3858
3859                 for (j = 0; j < 50; j++) {
3860                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3861                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3862                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3863                                 break;
3864                         usleep_range(1000, 2000);
3865                 }
3866                 /* Skip if the queue is already in the requested state */
3867                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3868                         continue;
3869
3870                 /* turn on/off the queue */
3871                 if (enable) {
3872                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3873                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3874                 } else {
3875                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3876                 }
3877
3878                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3879                 /* No waiting for the Tx queue to disable */
3880                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3881                         continue;
3882
3883                 /* wait for the change to finish */
3884                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3885                 if (ret) {
3886                         dev_info(&pf->pdev->dev,
3887                                  "VSI seid %d Tx ring %d %sable timeout\n",
3888                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3889                         break;
3890                 }
3891         }
3892
3893         if (hw->revision_id == 0)
3894                 mdelay(50);
3895         return ret;
3896 }
3897
3898 /**
3899  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3900  * @pf: the PF being configured
3901  * @pf_q: the PF queue
3902  * @enable: enable or disable state of the queue
3903  *
3904  * This routine will wait for the given Rx queue of the PF to reach the
3905  * enabled or disabled state.
3906  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3907  * multiple retries; else will return 0 in case of success.
3908  **/
3909 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3910 {
3911         int i;
3912         u32 rx_reg;
3913
3914         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3915                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3916                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3917                         break;
3918
3919                 usleep_range(10, 20);
3920         }
3921         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3922                 return -ETIMEDOUT;
3923
3924         return 0;
3925 }
3926
3927 /**
3928  * i40e_vsi_control_rx - Start or stop a VSI's rings
3929  * @vsi: the VSI being configured
3930  * @enable: start or stop the rings
3931  **/
3932 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3933 {
3934         struct i40e_pf *pf = vsi->back;
3935         struct i40e_hw *hw = &pf->hw;
3936         int i, j, pf_q, ret = 0;
3937         u32 rx_reg;
3938
3939         pf_q = vsi->base_queue;
3940         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3941                 for (j = 0; j < 50; j++) {
3942                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3943                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3944                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3945                                 break;
3946                         usleep_range(1000, 2000);
3947                 }
3948
3949                 /* Skip if the queue is already in the requested state */
3950                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3951                         continue;
3952
3953                 /* turn on/off the queue */
3954                 if (enable)
3955                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3956                 else
3957                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3958                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3959                 /* No waiting for the Tx queue to disable */
3960                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3961                         continue;
3962
3963                 /* wait for the change to finish */
3964                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3965                 if (ret) {
3966                         dev_info(&pf->pdev->dev,
3967                                  "VSI seid %d Rx ring %d %sable timeout\n",
3968                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3969                         break;
3970                 }
3971         }
3972
3973         return ret;
3974 }
3975
3976 /**
3977  * i40e_vsi_control_rings - Start or stop a VSI's rings
3978  * @vsi: the VSI being configured
3979  * @enable: start or stop the rings
3980  **/
3981 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3982 {
3983         int ret = 0;
3984
3985         /* do rx first for enable and last for disable */
3986         if (request) {
3987                 ret = i40e_vsi_control_rx(vsi, request);
3988                 if (ret)
3989                         return ret;
3990                 ret = i40e_vsi_control_tx(vsi, request);
3991         } else {
3992                 /* Ignore return value, we need to shutdown whatever we can */
3993                 i40e_vsi_control_tx(vsi, request);
3994                 i40e_vsi_control_rx(vsi, request);
3995         }
3996
3997         return ret;
3998 }
3999
4000 /**
4001  * i40e_vsi_free_irq - Free the irq association with the OS
4002  * @vsi: the VSI being configured
4003  **/
4004 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
4005 {
4006         struct i40e_pf *pf = vsi->back;
4007         struct i40e_hw *hw = &pf->hw;
4008         int base = vsi->base_vector;
4009         u32 val, qp;
4010         int i;
4011
4012         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4013                 if (!vsi->q_vectors)
4014                         return;
4015
4016                 if (!vsi->irqs_ready)
4017                         return;
4018
4019                 vsi->irqs_ready = false;
4020                 for (i = 0; i < vsi->num_q_vectors; i++) {
4021                         u16 vector = i + base;
4022
4023                         /* free only the irqs that were actually requested */
4024                         if (!vsi->q_vectors[i] ||
4025                             !vsi->q_vectors[i]->num_ringpairs)
4026                                 continue;
4027
4028                         /* clear the affinity_mask in the IRQ descriptor */
4029                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
4030                                               NULL);
4031                         synchronize_irq(pf->msix_entries[vector].vector);
4032                         free_irq(pf->msix_entries[vector].vector,
4033                                  vsi->q_vectors[i]);
4034
4035                         /* Tear down the interrupt queue link list
4036                          *
4037                          * We know that they come in pairs and always
4038                          * the Rx first, then the Tx.  To clear the
4039                          * link list, stick the EOL value into the
4040                          * next_q field of the registers.
4041                          */
4042                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
4043                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4044                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4045                         val |= I40E_QUEUE_END_OF_LIST
4046                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4047                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
4048
4049                         while (qp != I40E_QUEUE_END_OF_LIST) {
4050                                 u32 next;
4051
4052                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4053
4054                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4055                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4056                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4057                                          I40E_QINT_RQCTL_INTEVENT_MASK);
4058
4059                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4060                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4061
4062                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4063
4064                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4065
4066                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
4067                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
4068
4069                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4070                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4071                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4072                                          I40E_QINT_TQCTL_INTEVENT_MASK);
4073
4074                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4075                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4076
4077                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4078                                 qp = next;
4079                         }
4080                 }
4081         } else {
4082                 free_irq(pf->pdev->irq, pf);
4083
4084                 val = rd32(hw, I40E_PFINT_LNKLST0);
4085                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4086                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4087                 val |= I40E_QUEUE_END_OF_LIST
4088                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
4089                 wr32(hw, I40E_PFINT_LNKLST0, val);
4090
4091                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4092                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4093                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4094                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4095                          I40E_QINT_RQCTL_INTEVENT_MASK);
4096
4097                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4098                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4099
4100                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4101
4102                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4103
4104                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4105                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4106                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4107                          I40E_QINT_TQCTL_INTEVENT_MASK);
4108
4109                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4110                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4111
4112                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4113         }
4114 }
4115
4116 /**
4117  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
4118  * @vsi: the VSI being configured
4119  * @v_idx: Index of vector to be freed
4120  *
4121  * This function frees the memory allocated to the q_vector.  In addition if
4122  * NAPI is enabled it will delete any references to the NAPI struct prior
4123  * to freeing the q_vector.
4124  **/
4125 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
4126 {
4127         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4128         struct i40e_ring *ring;
4129
4130         if (!q_vector)
4131                 return;
4132
4133         /* disassociate q_vector from rings */
4134         i40e_for_each_ring(ring, q_vector->tx)
4135                 ring->q_vector = NULL;
4136
4137         i40e_for_each_ring(ring, q_vector->rx)
4138                 ring->q_vector = NULL;
4139
4140         /* only VSI w/ an associated netdev is set up w/ NAPI */
4141         if (vsi->netdev)
4142                 netif_napi_del(&q_vector->napi);
4143
4144         vsi->q_vectors[v_idx] = NULL;
4145
4146         kfree_rcu(q_vector, rcu);
4147 }
4148
4149 /**
4150  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
4151  * @vsi: the VSI being un-configured
4152  *
4153  * This frees the memory allocated to the q_vectors and
4154  * deletes references to the NAPI struct.
4155  **/
4156 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
4157 {
4158         int v_idx;
4159
4160         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
4161                 i40e_free_q_vector(vsi, v_idx);
4162 }
4163
4164 /**
4165  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
4166  * @pf: board private structure
4167  **/
4168 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
4169 {
4170         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
4171         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4172                 pci_disable_msix(pf->pdev);
4173                 kfree(pf->msix_entries);
4174                 pf->msix_entries = NULL;
4175                 kfree(pf->irq_pile);
4176                 pf->irq_pile = NULL;
4177         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
4178                 pci_disable_msi(pf->pdev);
4179         }
4180         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
4181 }
4182
4183 /**
4184  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
4185  * @pf: board private structure
4186  *
4187  * We go through and clear interrupt specific resources and reset the structure
4188  * to pre-load conditions
4189  **/
4190 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
4191 {
4192         int i;
4193
4194         i40e_stop_misc_vector(pf);
4195         if (pf->flags & I40E_FLAG_MSIX_ENABLED && pf->msix_entries) {
4196                 synchronize_irq(pf->msix_entries[0].vector);
4197                 free_irq(pf->msix_entries[0].vector, pf);
4198         }
4199
4200         i40e_put_lump(pf->irq_pile, pf->iwarp_base_vector,
4201                       I40E_IWARP_IRQ_PILE_ID);
4202
4203         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
4204         for (i = 0; i < pf->num_alloc_vsi; i++)
4205                 if (pf->vsi[i])
4206                         i40e_vsi_free_q_vectors(pf->vsi[i]);
4207         i40e_reset_interrupt_capability(pf);
4208 }
4209
4210 /**
4211  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4212  * @vsi: the VSI being configured
4213  **/
4214 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4215 {
4216         int q_idx;
4217
4218         if (!vsi->netdev)
4219                 return;
4220
4221         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4222                 napi_enable(&vsi->q_vectors[q_idx]->napi);
4223 }
4224
4225 /**
4226  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4227  * @vsi: the VSI being configured
4228  **/
4229 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4230 {
4231         int q_idx;
4232
4233         if (!vsi->netdev)
4234                 return;
4235
4236         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4237                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4238 }
4239
4240 /**
4241  * i40e_vsi_close - Shut down a VSI
4242  * @vsi: the vsi to be quelled
4243  **/
4244 static void i40e_vsi_close(struct i40e_vsi *vsi)
4245 {
4246         bool reset = false;
4247
4248         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4249                 i40e_down(vsi);
4250         i40e_vsi_free_irq(vsi);
4251         i40e_vsi_free_tx_resources(vsi);
4252         i40e_vsi_free_rx_resources(vsi);
4253         vsi->current_netdev_flags = 0;
4254         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4255                 reset = true;
4256         i40e_notify_client_of_netdev_close(vsi, reset);
4257 }
4258
4259 /**
4260  * i40e_quiesce_vsi - Pause a given VSI
4261  * @vsi: the VSI being paused
4262  **/
4263 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4264 {
4265         if (test_bit(__I40E_DOWN, &vsi->state))
4266                 return;
4267
4268         /* No need to disable FCoE VSI when Tx suspended */
4269         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4270             vsi->type == I40E_VSI_FCOE) {
4271                 dev_dbg(&vsi->back->pdev->dev,
4272                          "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4273                 return;
4274         }
4275
4276         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4277         if (vsi->netdev && netif_running(vsi->netdev))
4278                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4279         else
4280                 i40e_vsi_close(vsi);
4281 }
4282
4283 /**
4284  * i40e_unquiesce_vsi - Resume a given VSI
4285  * @vsi: the VSI being resumed
4286  **/
4287 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4288 {
4289         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4290                 return;
4291
4292         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4293         if (vsi->netdev && netif_running(vsi->netdev))
4294                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4295         else
4296                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4297 }
4298
4299 /**
4300  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4301  * @pf: the PF
4302  **/
4303 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4304 {
4305         int v;
4306
4307         for (v = 0; v < pf->num_alloc_vsi; v++) {
4308                 if (pf->vsi[v])
4309                         i40e_quiesce_vsi(pf->vsi[v]);
4310         }
4311 }
4312
4313 /**
4314  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4315  * @pf: the PF
4316  **/
4317 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4318 {
4319         int v;
4320
4321         for (v = 0; v < pf->num_alloc_vsi; v++) {
4322                 if (pf->vsi[v])
4323                         i40e_unquiesce_vsi(pf->vsi[v]);
4324         }
4325 }
4326
4327 #ifdef CONFIG_I40E_DCB
4328 /**
4329  * i40e_vsi_wait_queues_disabled - Wait for VSI's queues to be disabled
4330  * @vsi: the VSI being configured
4331  *
4332  * This function waits for the given VSI's queues to be disabled.
4333  **/
4334 static int i40e_vsi_wait_queues_disabled(struct i40e_vsi *vsi)
4335 {
4336         struct i40e_pf *pf = vsi->back;
4337         int i, pf_q, ret;
4338
4339         pf_q = vsi->base_queue;
4340         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4341                 /* Check and wait for the disable status of the queue */
4342                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4343                 if (ret) {
4344                         dev_info(&pf->pdev->dev,
4345                                  "VSI seid %d Tx ring %d disable timeout\n",
4346                                  vsi->seid, pf_q);
4347                         return ret;
4348                 }
4349         }
4350
4351         pf_q = vsi->base_queue;
4352         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4353                 /* Check and wait for the disable status of the queue */
4354                 ret = i40e_pf_rxq_wait(pf, pf_q, false);
4355                 if (ret) {
4356                         dev_info(&pf->pdev->dev,
4357                                  "VSI seid %d Rx ring %d disable timeout\n",
4358                                  vsi->seid, pf_q);
4359                         return ret;
4360                 }
4361         }
4362
4363         return 0;
4364 }
4365
4366 /**
4367  * i40e_pf_wait_queues_disabled - Wait for all queues of PF VSIs to be disabled
4368  * @pf: the PF
4369  *
4370  * This function waits for the queues to be in disabled state for all the
4371  * VSIs that are managed by this PF.
4372  **/
4373 static int i40e_pf_wait_queues_disabled(struct i40e_pf *pf)
4374 {
4375         int v, ret = 0;
4376
4377         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4378                 /* No need to wait for FCoE VSI queues */
4379                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4380                         ret = i40e_vsi_wait_queues_disabled(pf->vsi[v]);
4381                         if (ret)
4382                                 break;
4383                 }
4384         }
4385
4386         return ret;
4387 }
4388
4389 #endif
4390
4391 /**
4392  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4393  * @q_idx: TX queue number
4394  * @vsi: Pointer to VSI struct
4395  *
4396  * This function checks specified queue for given VSI. Detects hung condition.
4397  * Sets hung bit since it is two step process. Before next run of service task
4398  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4399  * hung condition remain unchanged and during subsequent run, this function
4400  * issues SW interrupt to recover from hung condition.
4401  **/
4402 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4403 {
4404         struct i40e_ring *tx_ring = NULL;
4405         struct i40e_pf  *pf;
4406         u32 head, val, tx_pending_hw;
4407         int i;
4408
4409         pf = vsi->back;
4410
4411         /* now that we have an index, find the tx_ring struct */
4412         for (i = 0; i < vsi->num_queue_pairs; i++) {
4413                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4414                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4415                                 tx_ring = vsi->tx_rings[i];
4416                                 break;
4417                         }
4418                 }
4419         }
4420
4421         if (!tx_ring)
4422                 return;
4423
4424         /* Read interrupt register */
4425         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4426                 val = rd32(&pf->hw,
4427                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4428                                                tx_ring->vsi->base_vector - 1));
4429         else
4430                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4431
4432         head = i40e_get_head(tx_ring);
4433
4434         tx_pending_hw = i40e_get_tx_pending(tx_ring, false);
4435
4436         /* HW is done executing descriptors, updated HEAD write back,
4437          * but SW hasn't processed those descriptors. If interrupt is
4438          * not generated from this point ON, it could result into
4439          * dev_watchdog detecting timeout on those netdev_queue,
4440          * hence proactively trigger SW interrupt.
4441          */
4442         if (tx_pending_hw && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))) {
4443                 /* NAPI Poll didn't run and clear since it was set */
4444                 if (test_and_clear_bit(I40E_Q_VECTOR_HUNG_DETECT,
4445                                        &tx_ring->q_vector->hung_detected)) {
4446                         netdev_info(vsi->netdev, "VSI_seid %d, Hung TX queue %d, tx_pending_hw: %d, NTC:0x%x, HWB: 0x%x, NTU: 0x%x, TAIL: 0x%x\n",
4447                                     vsi->seid, q_idx, tx_pending_hw,
4448                                     tx_ring->next_to_clean, head,
4449                                     tx_ring->next_to_use,
4450                                     readl(tx_ring->tail));
4451                         netdev_info(vsi->netdev, "VSI_seid %d, Issuing force_wb for TX queue %d, Interrupt Reg: 0x%x\n",
4452                                     vsi->seid, q_idx, val);
4453                         i40e_force_wb(vsi, tx_ring->q_vector);
4454                 } else {
4455                         /* First Chance - detected possible hung */
4456                         set_bit(I40E_Q_VECTOR_HUNG_DETECT,
4457                                 &tx_ring->q_vector->hung_detected);
4458                 }
4459         }
4460
4461         /* This is the case where we have interrupts missing,
4462          * so the tx_pending in HW will most likely be 0, but we
4463          * will have tx_pending in SW since the WB happened but the
4464          * interrupt got lost.
4465          */
4466         if ((!tx_pending_hw) && i40e_get_tx_pending(tx_ring, true) &&
4467             (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))) {
4468                 if (napi_reschedule(&tx_ring->q_vector->napi))
4469                         tx_ring->tx_stats.tx_lost_interrupt++;
4470         }
4471 }
4472
4473 /**
4474  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4475  * @pf:  pointer to PF struct
4476  *
4477  * LAN VSI has netdev and netdev has TX queues. This function is to check
4478  * each of those TX queues if they are hung, trigger recovery by issuing
4479  * SW interrupt.
4480  **/
4481 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4482 {
4483         struct net_device *netdev;
4484         struct i40e_vsi *vsi;
4485         int i;
4486
4487         /* Only for LAN VSI */
4488         vsi = pf->vsi[pf->lan_vsi];
4489
4490         if (!vsi)
4491                 return;
4492
4493         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4494         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4495             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4496                 return;
4497
4498         /* Make sure type is MAIN VSI */
4499         if (vsi->type != I40E_VSI_MAIN)
4500                 return;
4501
4502         netdev = vsi->netdev;
4503         if (!netdev)
4504                 return;
4505
4506         /* Bail out if netif_carrier is not OK */
4507         if (!netif_carrier_ok(netdev))
4508                 return;
4509
4510         /* Go thru' TX queues for netdev */
4511         for (i = 0; i < netdev->num_tx_queues; i++) {
4512                 struct netdev_queue *q;
4513
4514                 q = netdev_get_tx_queue(netdev, i);
4515                 if (q)
4516                         i40e_detect_recover_hung_queue(i, vsi);
4517         }
4518 }
4519
4520 /**
4521  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4522  * @pf: pointer to PF
4523  *
4524  * Get TC map for ISCSI PF type that will include iSCSI TC
4525  * and LAN TC.
4526  **/
4527 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4528 {
4529         struct i40e_dcb_app_priority_table app;
4530         struct i40e_hw *hw = &pf->hw;
4531         u8 enabled_tc = 1; /* TC0 is always enabled */
4532         u8 tc, i;
4533         /* Get the iSCSI APP TLV */
4534         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4535
4536         for (i = 0; i < dcbcfg->numapps; i++) {
4537                 app = dcbcfg->app[i];
4538                 if (app.selector == I40E_APP_SEL_TCPIP &&
4539                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4540                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4541                         enabled_tc |= BIT(tc);
4542                         break;
4543                 }
4544         }
4545
4546         return enabled_tc;
4547 }
4548
4549 /**
4550  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4551  * @dcbcfg: the corresponding DCBx configuration structure
4552  *
4553  * Return the number of TCs from given DCBx configuration
4554  **/
4555 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4556 {
4557         int i, tc_unused = 0;
4558         u8 num_tc = 0;
4559         u8 ret = 0;
4560
4561         /* Scan the ETS Config Priority Table to find
4562          * traffic class enabled for a given priority
4563          * and create a bitmask of enabled TCs
4564          */
4565         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++)
4566                 num_tc |= BIT(dcbcfg->etscfg.prioritytable[i]);
4567
4568         /* Now scan the bitmask to check for
4569          * contiguous TCs starting with TC0
4570          */
4571         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4572                 if (num_tc & BIT(i)) {
4573                         if (!tc_unused) {
4574                                 ret++;
4575                         } else {
4576                                 pr_err("Non-contiguous TC - Disabling DCB\n");
4577                                 return 1;
4578                         }
4579                 } else {
4580                         tc_unused = 1;
4581                 }
4582         }
4583
4584         /* There is always at least TC0 */
4585         if (!ret)
4586                 ret = 1;
4587
4588         return ret;
4589 }
4590
4591 /**
4592  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4593  * @dcbcfg: the corresponding DCBx configuration structure
4594  *
4595  * Query the current DCB configuration and return the number of
4596  * traffic classes enabled from the given DCBX config
4597  **/
4598 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4599 {
4600         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4601         u8 enabled_tc = 1;
4602         u8 i;
4603
4604         for (i = 0; i < num_tc; i++)
4605                 enabled_tc |= BIT(i);
4606
4607         return enabled_tc;
4608 }
4609
4610 /**
4611  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4612  * @pf: PF being queried
4613  *
4614  * Return number of traffic classes enabled for the given PF
4615  **/
4616 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4617 {
4618         struct i40e_hw *hw = &pf->hw;
4619         u8 i, enabled_tc;
4620         u8 num_tc = 0;
4621         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4622
4623         /* If DCB is not enabled then always in single TC */
4624         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4625                 return 1;
4626
4627         /* SFP mode will be enabled for all TCs on port */
4628         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4629                 return i40e_dcb_get_num_tc(dcbcfg);
4630
4631         /* MFP mode return count of enabled TCs for this PF */
4632         if (pf->hw.func_caps.iscsi)
4633                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4634         else
4635                 return 1; /* Only TC0 */
4636
4637         /* At least have TC0 */
4638         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4639         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4640                 if (enabled_tc & BIT(i))
4641                         num_tc++;
4642         }
4643         return num_tc;
4644 }
4645
4646 /**
4647  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4648  * @pf: PF being queried
4649  *
4650  * Return a bitmap for first enabled traffic class for this PF.
4651  **/
4652 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4653 {
4654         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4655         u8 i = 0;
4656
4657         if (!enabled_tc)
4658                 return 0x1; /* TC0 */
4659
4660         /* Find the first enabled TC */
4661         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4662                 if (enabled_tc & BIT(i))
4663                         break;
4664         }
4665
4666         return BIT(i);
4667 }
4668
4669 /**
4670  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4671  * @pf: PF being queried
4672  *
4673  * Return a bitmap for enabled traffic classes for this PF.
4674  **/
4675 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4676 {
4677         /* If DCB is not enabled for this PF then just return default TC */
4678         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4679                 return i40e_pf_get_default_tc(pf);
4680
4681         /* SFP mode we want PF to be enabled for all TCs */
4682         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4683                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4684
4685         /* MFP enabled and iSCSI PF type */
4686         if (pf->hw.func_caps.iscsi)
4687                 return i40e_get_iscsi_tc_map(pf);
4688         else
4689                 return i40e_pf_get_default_tc(pf);
4690 }
4691
4692 /**
4693  * i40e_vsi_get_bw_info - Query VSI BW Information
4694  * @vsi: the VSI being queried
4695  *
4696  * Returns 0 on success, negative value on failure
4697  **/
4698 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4699 {
4700         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4701         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4702         struct i40e_pf *pf = vsi->back;
4703         struct i40e_hw *hw = &pf->hw;
4704         i40e_status ret;
4705         u32 tc_bw_max;
4706         int i;
4707
4708         /* Get the VSI level BW configuration */
4709         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4710         if (ret) {
4711                 dev_info(&pf->pdev->dev,
4712                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4713                          i40e_stat_str(&pf->hw, ret),
4714                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4715                 return -EINVAL;
4716         }
4717
4718         /* Get the VSI level BW configuration per TC */
4719         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4720                                                NULL);
4721         if (ret) {
4722                 dev_info(&pf->pdev->dev,
4723                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4724                          i40e_stat_str(&pf->hw, ret),
4725                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4726                 return -EINVAL;
4727         }
4728
4729         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4730                 dev_info(&pf->pdev->dev,
4731                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4732                          bw_config.tc_valid_bits,
4733                          bw_ets_config.tc_valid_bits);
4734                 /* Still continuing */
4735         }
4736
4737         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4738         vsi->bw_max_quanta = bw_config.max_bw;
4739         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4740                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4741         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4742                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4743                 vsi->bw_ets_limit_credits[i] =
4744                                         le16_to_cpu(bw_ets_config.credits[i]);
4745                 /* 3 bits out of 4 for each TC */
4746                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4747         }
4748
4749         return 0;
4750 }
4751
4752 /**
4753  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4754  * @vsi: the VSI being configured
4755  * @enabled_tc: TC bitmap
4756  * @bw_credits: BW shared credits per TC
4757  *
4758  * Returns 0 on success, negative value on failure
4759  **/
4760 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4761                                        u8 *bw_share)
4762 {
4763         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4764         i40e_status ret;
4765         int i;
4766
4767         bw_data.tc_valid_bits = enabled_tc;
4768         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4769                 bw_data.tc_bw_credits[i] = bw_share[i];
4770
4771         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4772                                        NULL);
4773         if (ret) {
4774                 dev_info(&vsi->back->pdev->dev,
4775                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4776                          vsi->back->hw.aq.asq_last_status);
4777                 return -EINVAL;
4778         }
4779
4780         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4781                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4782
4783         return 0;
4784 }
4785
4786 /**
4787  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4788  * @vsi: the VSI being configured
4789  * @enabled_tc: TC map to be enabled
4790  *
4791  **/
4792 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4793 {
4794         struct net_device *netdev = vsi->netdev;
4795         struct i40e_pf *pf = vsi->back;
4796         struct i40e_hw *hw = &pf->hw;
4797         u8 netdev_tc = 0;
4798         int i;
4799         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4800
4801         if (!netdev)
4802                 return;
4803
4804         if (!enabled_tc) {
4805                 netdev_reset_tc(netdev);
4806                 return;
4807         }
4808
4809         /* Set up actual enabled TCs on the VSI */
4810         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4811                 return;
4812
4813         /* set per TC queues for the VSI */
4814         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4815                 /* Only set TC queues for enabled tcs
4816                  *
4817                  * e.g. For a VSI that has TC0 and TC3 enabled the
4818                  * enabled_tc bitmap would be 0x00001001; the driver
4819                  * will set the numtc for netdev as 2 that will be
4820                  * referenced by the netdev layer as TC 0 and 1.
4821                  */
4822                 if (vsi->tc_config.enabled_tc & BIT(i))
4823                         netdev_set_tc_queue(netdev,
4824                                         vsi->tc_config.tc_info[i].netdev_tc,
4825                                         vsi->tc_config.tc_info[i].qcount,
4826                                         vsi->tc_config.tc_info[i].qoffset);
4827         }
4828
4829         /* Assign UP2TC map for the VSI */
4830         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4831                 /* Get the actual TC# for the UP */
4832                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4833                 /* Get the mapped netdev TC# for the UP */
4834                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4835                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4836         }
4837 }
4838
4839 /**
4840  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4841  * @vsi: the VSI being configured
4842  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4843  **/
4844 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4845                                       struct i40e_vsi_context *ctxt)
4846 {
4847         /* copy just the sections touched not the entire info
4848          * since not all sections are valid as returned by
4849          * update vsi params
4850          */
4851         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4852         memcpy(&vsi->info.queue_mapping,
4853                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4854         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4855                sizeof(vsi->info.tc_mapping));
4856 }
4857
4858 /**
4859  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4860  * @vsi: VSI to be configured
4861  * @enabled_tc: TC bitmap
4862  *
4863  * This configures a particular VSI for TCs that are mapped to the
4864  * given TC bitmap. It uses default bandwidth share for TCs across
4865  * VSIs to configure TC for a particular VSI.
4866  *
4867  * NOTE:
4868  * It is expected that the VSI queues have been quisced before calling
4869  * this function.
4870  **/
4871 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4872 {
4873         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4874         struct i40e_vsi_context ctxt;
4875         int ret = 0;
4876         int i;
4877
4878         /* Check if enabled_tc is same as existing or new TCs */
4879         if (vsi->tc_config.enabled_tc == enabled_tc)
4880                 return ret;
4881
4882         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4883         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4884                 if (enabled_tc & BIT(i))
4885                         bw_share[i] = 1;
4886         }
4887
4888         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4889         if (ret) {
4890                 dev_info(&vsi->back->pdev->dev,
4891                          "Failed configuring TC map %d for VSI %d\n",
4892                          enabled_tc, vsi->seid);
4893                 goto out;
4894         }
4895
4896         /* Update Queue Pairs Mapping for currently enabled UPs */
4897         ctxt.seid = vsi->seid;
4898         ctxt.pf_num = vsi->back->hw.pf_id;
4899         ctxt.vf_num = 0;
4900         ctxt.uplink_seid = vsi->uplink_seid;
4901         ctxt.info = vsi->info;
4902         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4903
4904         if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
4905                 ctxt.info.valid_sections |=
4906                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
4907                 ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA;
4908         }
4909
4910         /* Update the VSI after updating the VSI queue-mapping information */
4911         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4912         if (ret) {
4913                 dev_info(&vsi->back->pdev->dev,
4914                          "Update vsi tc config failed, err %s aq_err %s\n",
4915                          i40e_stat_str(&vsi->back->hw, ret),
4916                          i40e_aq_str(&vsi->back->hw,
4917                                      vsi->back->hw.aq.asq_last_status));
4918                 goto out;
4919         }
4920         /* update the local VSI info with updated queue map */
4921         i40e_vsi_update_queue_map(vsi, &ctxt);
4922         vsi->info.valid_sections = 0;
4923
4924         /* Update current VSI BW information */
4925         ret = i40e_vsi_get_bw_info(vsi);
4926         if (ret) {
4927                 dev_info(&vsi->back->pdev->dev,
4928                          "Failed updating vsi bw info, err %s aq_err %s\n",
4929                          i40e_stat_str(&vsi->back->hw, ret),
4930                          i40e_aq_str(&vsi->back->hw,
4931                                      vsi->back->hw.aq.asq_last_status));
4932                 goto out;
4933         }
4934
4935         /* Update the netdev TC setup */
4936         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4937 out:
4938         return ret;
4939 }
4940
4941 /**
4942  * i40e_veb_config_tc - Configure TCs for given VEB
4943  * @veb: given VEB
4944  * @enabled_tc: TC bitmap
4945  *
4946  * Configures given TC bitmap for VEB (switching) element
4947  **/
4948 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4949 {
4950         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4951         struct i40e_pf *pf = veb->pf;
4952         int ret = 0;
4953         int i;
4954
4955         /* No TCs or already enabled TCs just return */
4956         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4957                 return ret;
4958
4959         bw_data.tc_valid_bits = enabled_tc;
4960         /* bw_data.absolute_credits is not set (relative) */
4961
4962         /* Enable ETS TCs with equal BW Share for now */
4963         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4964                 if (enabled_tc & BIT(i))
4965                         bw_data.tc_bw_share_credits[i] = 1;
4966         }
4967
4968         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4969                                                    &bw_data, NULL);
4970         if (ret) {
4971                 dev_info(&pf->pdev->dev,
4972                          "VEB bw config failed, err %s aq_err %s\n",
4973                          i40e_stat_str(&pf->hw, ret),
4974                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4975                 goto out;
4976         }
4977
4978         /* Update the BW information */
4979         ret = i40e_veb_get_bw_info(veb);
4980         if (ret) {
4981                 dev_info(&pf->pdev->dev,
4982                          "Failed getting veb bw config, err %s aq_err %s\n",
4983                          i40e_stat_str(&pf->hw, ret),
4984                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4985         }
4986
4987 out:
4988         return ret;
4989 }
4990
4991 #ifdef CONFIG_I40E_DCB
4992 /**
4993  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4994  * @pf: PF struct
4995  *
4996  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4997  * the caller would've quiesce all the VSIs before calling
4998  * this function
4999  **/
5000 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
5001 {
5002         u8 tc_map = 0;
5003         int ret;
5004         u8 v;
5005
5006         /* Enable the TCs available on PF to all VEBs */
5007         tc_map = i40e_pf_get_tc_map(pf);
5008         for (v = 0; v < I40E_MAX_VEB; v++) {
5009                 if (!pf->veb[v])
5010                         continue;
5011                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
5012                 if (ret) {
5013                         dev_info(&pf->pdev->dev,
5014                                  "Failed configuring TC for VEB seid=%d\n",
5015                                  pf->veb[v]->seid);
5016                         /* Will try to configure as many components */
5017                 }
5018         }
5019
5020         /* Update each VSI */
5021         for (v = 0; v < pf->num_alloc_vsi; v++) {
5022                 if (!pf->vsi[v])
5023                         continue;
5024
5025                 /* - Enable all TCs for the LAN VSI
5026 #ifdef I40E_FCOE
5027                  * - For FCoE VSI only enable the TC configured
5028                  *   as per the APP TLV
5029 #endif
5030                  * - For all others keep them at TC0 for now
5031                  */
5032                 if (v == pf->lan_vsi)
5033                         tc_map = i40e_pf_get_tc_map(pf);
5034                 else
5035                         tc_map = i40e_pf_get_default_tc(pf);
5036 #ifdef I40E_FCOE
5037                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
5038                         tc_map = i40e_get_fcoe_tc_map(pf);
5039 #endif /* #ifdef I40E_FCOE */
5040
5041                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
5042                 if (ret) {
5043                         dev_info(&pf->pdev->dev,
5044                                  "Failed configuring TC for VSI seid=%d\n",
5045                                  pf->vsi[v]->seid);
5046                         /* Will try to configure as many components */
5047                 } else {
5048                         /* Re-configure VSI vectors based on updated TC map */
5049                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
5050                         if (pf->vsi[v]->netdev)
5051                                 i40e_dcbnl_set_all(pf->vsi[v]);
5052                 }
5053         }
5054 }
5055
5056 /**
5057  * i40e_resume_port_tx - Resume port Tx
5058  * @pf: PF struct
5059  *
5060  * Resume a port's Tx and issue a PF reset in case of failure to
5061  * resume.
5062  **/
5063 static int i40e_resume_port_tx(struct i40e_pf *pf)
5064 {
5065         struct i40e_hw *hw = &pf->hw;
5066         int ret;
5067
5068         ret = i40e_aq_resume_port_tx(hw, NULL);
5069         if (ret) {
5070                 dev_info(&pf->pdev->dev,
5071                          "Resume Port Tx failed, err %s aq_err %s\n",
5072                           i40e_stat_str(&pf->hw, ret),
5073                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5074                 /* Schedule PF reset to recover */
5075                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5076                 i40e_service_event_schedule(pf);
5077         }
5078
5079         return ret;
5080 }
5081
5082 /**
5083  * i40e_init_pf_dcb - Initialize DCB configuration
5084  * @pf: PF being configured
5085  *
5086  * Query the current DCB configuration and cache it
5087  * in the hardware structure
5088  **/
5089 static int i40e_init_pf_dcb(struct i40e_pf *pf)
5090 {
5091         struct i40e_hw *hw = &pf->hw;
5092         int err = 0;
5093
5094         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
5095         if (pf->flags & I40E_FLAG_NO_DCB_SUPPORT)
5096                 goto out;
5097
5098         /* Get the initial DCB configuration */
5099         err = i40e_init_dcb(hw);
5100         if (!err) {
5101                 /* Device/Function is not DCBX capable */
5102                 if ((!hw->func_caps.dcb) ||
5103                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
5104                         dev_info(&pf->pdev->dev,
5105                                  "DCBX offload is not supported or is disabled for this PF.\n");
5106
5107                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
5108                                 goto out;
5109
5110                 } else {
5111                         /* When status is not DISABLED then DCBX in FW */
5112                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
5113                                        DCB_CAP_DCBX_VER_IEEE;
5114
5115                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
5116                         /* Enable DCB tagging only when more than one TC */
5117                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5118                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5119                         dev_dbg(&pf->pdev->dev,
5120                                 "DCBX offload is supported for this PF.\n");
5121                 }
5122         } else {
5123                 dev_info(&pf->pdev->dev,
5124                          "Query for DCB configuration failed, err %s aq_err %s\n",
5125                          i40e_stat_str(&pf->hw, err),
5126                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5127         }
5128
5129 out:
5130         return err;
5131 }
5132 #endif /* CONFIG_I40E_DCB */
5133 #define SPEED_SIZE 14
5134 #define FC_SIZE 8
5135 /**
5136  * i40e_print_link_message - print link up or down
5137  * @vsi: the VSI for which link needs a message
5138  */
5139 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
5140 {
5141         char *speed = "Unknown";
5142         char *fc = "Unknown";
5143
5144         if (vsi->current_isup == isup)
5145                 return;
5146         vsi->current_isup = isup;
5147         if (!isup) {
5148                 netdev_info(vsi->netdev, "NIC Link is Down\n");
5149                 return;
5150         }
5151
5152         /* Warn user if link speed on NPAR enabled partition is not at
5153          * least 10GB
5154          */
5155         if (vsi->back->hw.func_caps.npar_enable &&
5156             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
5157              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
5158                 netdev_warn(vsi->netdev,
5159                             "The partition detected link speed that is less than 10Gbps\n");
5160
5161         switch (vsi->back->hw.phy.link_info.link_speed) {
5162         case I40E_LINK_SPEED_40GB:
5163                 speed = "40 G";
5164                 break;
5165         case I40E_LINK_SPEED_20GB:
5166                 speed = "20 G";
5167                 break;
5168         case I40E_LINK_SPEED_10GB:
5169                 speed = "10 G";
5170                 break;
5171         case I40E_LINK_SPEED_1GB:
5172                 speed = "1000 M";
5173                 break;
5174         case I40E_LINK_SPEED_100MB:
5175                 speed = "100 M";
5176                 break;
5177         default:
5178                 break;
5179         }
5180
5181         switch (vsi->back->hw.fc.current_mode) {
5182         case I40E_FC_FULL:
5183                 fc = "RX/TX";
5184                 break;
5185         case I40E_FC_TX_PAUSE:
5186                 fc = "TX";
5187                 break;
5188         case I40E_FC_RX_PAUSE:
5189                 fc = "RX";
5190                 break;
5191         default:
5192                 fc = "None";
5193                 break;
5194         }
5195
5196         netdev_info(vsi->netdev, "NIC Link is Up %sbps Full Duplex, Flow Control: %s\n",
5197                     speed, fc);
5198 }
5199
5200 /**
5201  * i40e_up_complete - Finish the last steps of bringing up a connection
5202  * @vsi: the VSI being configured
5203  **/
5204 static int i40e_up_complete(struct i40e_vsi *vsi)
5205 {
5206         struct i40e_pf *pf = vsi->back;
5207         int err;
5208
5209         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5210                 i40e_vsi_configure_msix(vsi);
5211         else
5212                 i40e_configure_msi_and_legacy(vsi);
5213
5214         /* start rings */
5215         err = i40e_vsi_control_rings(vsi, true);
5216         if (err)
5217                 return err;
5218
5219         clear_bit(__I40E_DOWN, &vsi->state);
5220         i40e_napi_enable_all(vsi);
5221         i40e_vsi_enable_irq(vsi);
5222
5223         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
5224             (vsi->netdev)) {
5225                 i40e_print_link_message(vsi, true);
5226                 netif_tx_start_all_queues(vsi->netdev);
5227                 netif_carrier_on(vsi->netdev);
5228         } else if (vsi->netdev) {
5229                 i40e_print_link_message(vsi, false);
5230                 /* need to check for qualified module here*/
5231                 if ((pf->hw.phy.link_info.link_info &
5232                         I40E_AQ_MEDIA_AVAILABLE) &&
5233                     (!(pf->hw.phy.link_info.an_info &
5234                         I40E_AQ_QUALIFIED_MODULE)))
5235                         netdev_err(vsi->netdev,
5236                                    "the driver failed to link because an unqualified module was detected.");
5237         }
5238
5239         /* replay FDIR SB filters */
5240         if (vsi->type == I40E_VSI_FDIR) {
5241                 /* reset fd counters */
5242                 pf->fd_add_err = pf->fd_atr_cnt = 0;
5243                 if (pf->fd_tcp_rule > 0) {
5244                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5245                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5246                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
5247                         pf->fd_tcp_rule = 0;
5248                 }
5249                 i40e_fdir_filter_restore(vsi);
5250         }
5251
5252         /* On the next run of the service_task, notify any clients of the new
5253          * opened netdev
5254          */
5255         pf->flags |= I40E_FLAG_SERVICE_CLIENT_REQUESTED;
5256         i40e_service_event_schedule(pf);
5257
5258         return 0;
5259 }
5260
5261 /**
5262  * i40e_vsi_reinit_locked - Reset the VSI
5263  * @vsi: the VSI being configured
5264  *
5265  * Rebuild the ring structs after some configuration
5266  * has changed, e.g. MTU size.
5267  **/
5268 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
5269 {
5270         struct i40e_pf *pf = vsi->back;
5271
5272         WARN_ON(in_interrupt());
5273         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
5274                 usleep_range(1000, 2000);
5275         i40e_down(vsi);
5276
5277         i40e_up(vsi);
5278         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
5279 }
5280
5281 /**
5282  * i40e_up - Bring the connection back up after being down
5283  * @vsi: the VSI being configured
5284  **/
5285 int i40e_up(struct i40e_vsi *vsi)
5286 {
5287         int err;
5288
5289         err = i40e_vsi_configure(vsi);
5290         if (!err)
5291                 err = i40e_up_complete(vsi);
5292
5293         return err;
5294 }
5295
5296 /**
5297  * i40e_down - Shutdown the connection processing
5298  * @vsi: the VSI being stopped
5299  **/
5300 void i40e_down(struct i40e_vsi *vsi)
5301 {
5302         int i;
5303
5304         /* It is assumed that the caller of this function
5305          * sets the vsi->state __I40E_DOWN bit.
5306          */
5307         if (vsi->netdev) {
5308                 netif_carrier_off(vsi->netdev);
5309                 netif_tx_disable(vsi->netdev);
5310         }
5311         i40e_vsi_disable_irq(vsi);
5312         i40e_vsi_control_rings(vsi, false);
5313         i40e_napi_disable_all(vsi);
5314
5315         for (i = 0; i < vsi->num_queue_pairs; i++) {
5316                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5317                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5318         }
5319
5320         i40e_notify_client_of_netdev_close(vsi, false);
5321
5322 }
5323
5324 /**
5325  * i40e_setup_tc - configure multiple traffic classes
5326  * @netdev: net device to configure
5327  * @tc: number of traffic classes to enable
5328  **/
5329 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5330 {
5331         struct i40e_netdev_priv *np = netdev_priv(netdev);
5332         struct i40e_vsi *vsi = np->vsi;
5333         struct i40e_pf *pf = vsi->back;
5334         u8 enabled_tc = 0;
5335         int ret = -EINVAL;
5336         int i;
5337
5338         /* Check if DCB enabled to continue */
5339         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5340                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5341                 goto exit;
5342         }
5343
5344         /* Check if MFP enabled */
5345         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5346                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5347                 goto exit;
5348         }
5349
5350         /* Check whether tc count is within enabled limit */
5351         if (tc > i40e_pf_get_num_tc(pf)) {
5352                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5353                 goto exit;
5354         }
5355
5356         /* Generate TC map for number of tc requested */
5357         for (i = 0; i < tc; i++)
5358                 enabled_tc |= BIT(i);
5359
5360         /* Requesting same TC configuration as already enabled */
5361         if (enabled_tc == vsi->tc_config.enabled_tc)
5362                 return 0;
5363
5364         /* Quiesce VSI queues */
5365         i40e_quiesce_vsi(vsi);
5366
5367         /* Configure VSI for enabled TCs */
5368         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5369         if (ret) {
5370                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5371                             vsi->seid);
5372                 goto exit;
5373         }
5374
5375         /* Unquiesce VSI */
5376         i40e_unquiesce_vsi(vsi);
5377
5378 exit:
5379         return ret;
5380 }
5381
5382 #ifdef I40E_FCOE
5383 int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5384                     struct tc_to_netdev *tc)
5385 #else
5386 static int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5387                            struct tc_to_netdev *tc)
5388 #endif
5389 {
5390         if (handle != TC_H_ROOT || tc->type != TC_SETUP_MQPRIO)
5391                 return -EINVAL;
5392         return i40e_setup_tc(netdev, tc->tc);
5393 }
5394
5395 /**
5396  * i40e_open - Called when a network interface is made active
5397  * @netdev: network interface device structure
5398  *
5399  * The open entry point is called when a network interface is made
5400  * active by the system (IFF_UP).  At this point all resources needed
5401  * for transmit and receive operations are allocated, the interrupt
5402  * handler is registered with the OS, the netdev watchdog subtask is
5403  * enabled, and the stack is notified that the interface is ready.
5404  *
5405  * Returns 0 on success, negative value on failure
5406  **/
5407 int i40e_open(struct net_device *netdev)
5408 {
5409         struct i40e_netdev_priv *np = netdev_priv(netdev);
5410         struct i40e_vsi *vsi = np->vsi;
5411         struct i40e_pf *pf = vsi->back;
5412         int err;
5413
5414         /* disallow open during test or if eeprom is broken */
5415         if (test_bit(__I40E_TESTING, &pf->state) ||
5416             test_bit(__I40E_BAD_EEPROM, &pf->state))
5417                 return -EBUSY;
5418
5419         netif_carrier_off(netdev);
5420
5421         err = i40e_vsi_open(vsi);
5422         if (err)
5423                 return err;
5424
5425         /* configure global TSO hardware offload settings */
5426         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5427                                                        TCP_FLAG_FIN) >> 16);
5428         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5429                                                        TCP_FLAG_FIN |
5430                                                        TCP_FLAG_CWR) >> 16);
5431         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5432
5433         udp_tunnel_get_rx_info(netdev);
5434         i40e_notify_client_of_netdev_open(vsi);
5435
5436         return 0;
5437 }
5438
5439 /**
5440  * i40e_vsi_open -
5441  * @vsi: the VSI to open
5442  *
5443  * Finish initialization of the VSI.
5444  *
5445  * Returns 0 on success, negative value on failure
5446  **/
5447 int i40e_vsi_open(struct i40e_vsi *vsi)
5448 {
5449         struct i40e_pf *pf = vsi->back;
5450         char int_name[I40E_INT_NAME_STR_LEN];
5451         int err;
5452
5453         /* allocate descriptors */
5454         err = i40e_vsi_setup_tx_resources(vsi);
5455         if (err)
5456                 goto err_setup_tx;
5457         err = i40e_vsi_setup_rx_resources(vsi);
5458         if (err)
5459                 goto err_setup_rx;
5460
5461         err = i40e_vsi_configure(vsi);
5462         if (err)
5463                 goto err_setup_rx;
5464
5465         if (vsi->netdev) {
5466                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5467                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5468                 err = i40e_vsi_request_irq(vsi, int_name);
5469                 if (err)
5470                         goto err_setup_rx;
5471
5472                 /* Notify the stack of the actual queue counts. */
5473                 err = netif_set_real_num_tx_queues(vsi->netdev,
5474                                                    vsi->num_queue_pairs);
5475                 if (err)
5476                         goto err_set_queues;
5477
5478                 err = netif_set_real_num_rx_queues(vsi->netdev,
5479                                                    vsi->num_queue_pairs);
5480                 if (err)
5481                         goto err_set_queues;
5482
5483         } else if (vsi->type == I40E_VSI_FDIR) {
5484                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5485                          dev_driver_string(&pf->pdev->dev),
5486                          dev_name(&pf->pdev->dev));
5487                 err = i40e_vsi_request_irq(vsi, int_name);
5488
5489         } else {
5490                 err = -EINVAL;
5491                 goto err_setup_rx;
5492         }
5493
5494         err = i40e_up_complete(vsi);
5495         if (err)
5496                 goto err_up_complete;
5497
5498         return 0;
5499
5500 err_up_complete:
5501         i40e_down(vsi);
5502 err_set_queues:
5503         i40e_vsi_free_irq(vsi);
5504 err_setup_rx:
5505         i40e_vsi_free_rx_resources(vsi);
5506 err_setup_tx:
5507         i40e_vsi_free_tx_resources(vsi);
5508         if (vsi == pf->vsi[pf->lan_vsi])
5509                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5510
5511         return err;
5512 }
5513
5514 /**
5515  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5516  * @pf: Pointer to PF
5517  *
5518  * This function destroys the hlist where all the Flow Director
5519  * filters were saved.
5520  **/
5521 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5522 {
5523         struct i40e_fdir_filter *filter;
5524         struct hlist_node *node2;
5525
5526         hlist_for_each_entry_safe(filter, node2,
5527                                   &pf->fdir_filter_list, fdir_node) {
5528                 hlist_del(&filter->fdir_node);
5529                 kfree(filter);
5530         }
5531         pf->fdir_pf_active_filters = 0;
5532 }
5533
5534 /**
5535  * i40e_close - Disables a network interface
5536  * @netdev: network interface device structure
5537  *
5538  * The close entry point is called when an interface is de-activated
5539  * by the OS.  The hardware is still under the driver's control, but
5540  * this netdev interface is disabled.
5541  *
5542  * Returns 0, this is not allowed to fail
5543  **/
5544 int i40e_close(struct net_device *netdev)
5545 {
5546         struct i40e_netdev_priv *np = netdev_priv(netdev);
5547         struct i40e_vsi *vsi = np->vsi;
5548
5549         i40e_vsi_close(vsi);
5550
5551         return 0;
5552 }
5553
5554 /**
5555  * i40e_do_reset - Start a PF or Core Reset sequence
5556  * @pf: board private structure
5557  * @reset_flags: which reset is requested
5558  *
5559  * The essential difference in resets is that the PF Reset
5560  * doesn't clear the packet buffers, doesn't reset the PE
5561  * firmware, and doesn't bother the other PFs on the chip.
5562  **/
5563 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5564 {
5565         u32 val;
5566
5567         WARN_ON(in_interrupt());
5568
5569
5570         /* do the biggest reset indicated */
5571         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5572
5573                 /* Request a Global Reset
5574                  *
5575                  * This will start the chip's countdown to the actual full
5576                  * chip reset event, and a warning interrupt to be sent
5577                  * to all PFs, including the requestor.  Our handler
5578                  * for the warning interrupt will deal with the shutdown
5579                  * and recovery of the switch setup.
5580                  */
5581                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5582                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5583                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5584                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5585
5586         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5587
5588                 /* Request a Core Reset
5589                  *
5590                  * Same as Global Reset, except does *not* include the MAC/PHY
5591                  */
5592                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5593                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5594                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5595                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5596                 i40e_flush(&pf->hw);
5597
5598         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5599
5600                 /* Request a PF Reset
5601                  *
5602                  * Resets only the PF-specific registers
5603                  *
5604                  * This goes directly to the tear-down and rebuild of
5605                  * the switch, since we need to do all the recovery as
5606                  * for the Core Reset.
5607                  */
5608                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5609                 i40e_handle_reset_warning(pf);
5610
5611         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5612                 int v;
5613
5614                 /* Find the VSI(s) that requested a re-init */
5615                 dev_info(&pf->pdev->dev,
5616                          "VSI reinit requested\n");
5617                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5618                         struct i40e_vsi *vsi = pf->vsi[v];
5619
5620                         if (vsi != NULL &&
5621                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5622                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5623                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5624                         }
5625                 }
5626         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5627                 int v;
5628
5629                 /* Find the VSI(s) that needs to be brought down */
5630                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5631                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5632                         struct i40e_vsi *vsi = pf->vsi[v];
5633
5634                         if (vsi != NULL &&
5635                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5636                                 set_bit(__I40E_DOWN, &vsi->state);
5637                                 i40e_down(vsi);
5638                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5639                         }
5640                 }
5641         } else {
5642                 dev_info(&pf->pdev->dev,
5643                          "bad reset request 0x%08x\n", reset_flags);
5644         }
5645 }
5646
5647 #ifdef CONFIG_I40E_DCB
5648 /**
5649  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5650  * @pf: board private structure
5651  * @old_cfg: current DCB config
5652  * @new_cfg: new DCB config
5653  **/
5654 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5655                             struct i40e_dcbx_config *old_cfg,
5656                             struct i40e_dcbx_config *new_cfg)
5657 {
5658         bool need_reconfig = false;
5659
5660         /* Check if ETS configuration has changed */
5661         if (memcmp(&new_cfg->etscfg,
5662                    &old_cfg->etscfg,
5663                    sizeof(new_cfg->etscfg))) {
5664                 /* If Priority Table has changed reconfig is needed */
5665                 if (memcmp(&new_cfg->etscfg.prioritytable,
5666                            &old_cfg->etscfg.prioritytable,
5667                            sizeof(new_cfg->etscfg.prioritytable))) {
5668                         need_reconfig = true;
5669                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5670                 }
5671
5672                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5673                            &old_cfg->etscfg.tcbwtable,
5674                            sizeof(new_cfg->etscfg.tcbwtable)))
5675                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5676
5677                 if (memcmp(&new_cfg->etscfg.tsatable,
5678                            &old_cfg->etscfg.tsatable,
5679                            sizeof(new_cfg->etscfg.tsatable)))
5680                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5681         }
5682
5683         /* Check if PFC configuration has changed */
5684         if (memcmp(&new_cfg->pfc,
5685                    &old_cfg->pfc,
5686                    sizeof(new_cfg->pfc))) {
5687                 need_reconfig = true;
5688                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5689         }
5690
5691         /* Check if APP Table has changed */
5692         if (memcmp(&new_cfg->app,
5693                    &old_cfg->app,
5694                    sizeof(new_cfg->app))) {
5695                 need_reconfig = true;
5696                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5697         }
5698
5699         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5700         return need_reconfig;
5701 }
5702
5703 /**
5704  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5705  * @pf: board private structure
5706  * @e: event info posted on ARQ
5707  **/
5708 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5709                                   struct i40e_arq_event_info *e)
5710 {
5711         struct i40e_aqc_lldp_get_mib *mib =
5712                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5713         struct i40e_hw *hw = &pf->hw;
5714         struct i40e_dcbx_config tmp_dcbx_cfg;
5715         bool need_reconfig = false;
5716         int ret = 0;
5717         u8 type;
5718
5719         /* Not DCB capable or capability disabled */
5720         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5721                 return ret;
5722
5723         /* Ignore if event is not for Nearest Bridge */
5724         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5725                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5726         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5727         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5728                 return ret;
5729
5730         /* Check MIB Type and return if event for Remote MIB update */
5731         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5732         dev_dbg(&pf->pdev->dev,
5733                 "LLDP event mib type %s\n", type ? "remote" : "local");
5734         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5735                 /* Update the remote cached instance and return */
5736                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5737                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5738                                 &hw->remote_dcbx_config);
5739                 goto exit;
5740         }
5741
5742         /* Store the old configuration */
5743         tmp_dcbx_cfg = hw->local_dcbx_config;
5744
5745         /* Reset the old DCBx configuration data */
5746         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5747         /* Get updated DCBX data from firmware */
5748         ret = i40e_get_dcb_config(&pf->hw);
5749         if (ret) {
5750                 dev_info(&pf->pdev->dev,
5751                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5752                          i40e_stat_str(&pf->hw, ret),
5753                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5754                 goto exit;
5755         }
5756
5757         /* No change detected in DCBX configs */
5758         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5759                     sizeof(tmp_dcbx_cfg))) {
5760                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5761                 goto exit;
5762         }
5763
5764         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5765                                                &hw->local_dcbx_config);
5766
5767         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5768
5769         if (!need_reconfig)
5770                 goto exit;
5771
5772         /* Enable DCB tagging only when more than one TC */
5773         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5774                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5775         else
5776                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5777
5778         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5779         /* Reconfiguration needed quiesce all VSIs */
5780         i40e_pf_quiesce_all_vsi(pf);
5781
5782         /* Changes in configuration update VEB/VSI */
5783         i40e_dcb_reconfigure(pf);
5784
5785         ret = i40e_resume_port_tx(pf);
5786
5787         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5788         /* In case of error no point in resuming VSIs */
5789         if (ret)
5790                 goto exit;
5791
5792         /* Wait for the PF's queues to be disabled */
5793         ret = i40e_pf_wait_queues_disabled(pf);
5794         if (ret) {
5795                 /* Schedule PF reset to recover */
5796                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5797                 i40e_service_event_schedule(pf);
5798         } else {
5799                 i40e_pf_unquiesce_all_vsi(pf);
5800                 /* Notify the client for the DCB changes */
5801                 i40e_notify_client_of_l2_param_changes(pf->vsi[pf->lan_vsi]);
5802         }
5803
5804 exit:
5805         return ret;
5806 }
5807 #endif /* CONFIG_I40E_DCB */
5808
5809 /**
5810  * i40e_do_reset_safe - Protected reset path for userland calls.
5811  * @pf: board private structure
5812  * @reset_flags: which reset is requested
5813  *
5814  **/
5815 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5816 {
5817         rtnl_lock();
5818         i40e_do_reset(pf, reset_flags);
5819         rtnl_unlock();
5820 }
5821
5822 /**
5823  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5824  * @pf: board private structure
5825  * @e: event info posted on ARQ
5826  *
5827  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5828  * and VF queues
5829  **/
5830 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5831                                            struct i40e_arq_event_info *e)
5832 {
5833         struct i40e_aqc_lan_overflow *data =
5834                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5835         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5836         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5837         struct i40e_hw *hw = &pf->hw;
5838         struct i40e_vf *vf;
5839         u16 vf_id;
5840
5841         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5842                 queue, qtx_ctl);
5843
5844         /* Queue belongs to VF, find the VF and issue VF reset */
5845         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5846             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5847                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5848                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5849                 vf_id -= hw->func_caps.vf_base_id;
5850                 vf = &pf->vf[vf_id];
5851                 i40e_vc_notify_vf_reset(vf);
5852                 /* Allow VF to process pending reset notification */
5853                 msleep(20);
5854                 i40e_reset_vf(vf, false);
5855         }
5856 }
5857
5858 /**
5859  * i40e_service_event_complete - Finish up the service event
5860  * @pf: board private structure
5861  **/
5862 static void i40e_service_event_complete(struct i40e_pf *pf)
5863 {
5864         WARN_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5865
5866         /* flush memory to make sure state is correct before next watchog */
5867         smp_mb__before_atomic();
5868         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5869 }
5870
5871 /**
5872  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5873  * @pf: board private structure
5874  **/
5875 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5876 {
5877         u32 val, fcnt_prog;
5878
5879         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5880         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5881         return fcnt_prog;
5882 }
5883
5884 /**
5885  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5886  * @pf: board private structure
5887  **/
5888 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5889 {
5890         u32 val, fcnt_prog;
5891
5892         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5893         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5894                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5895                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5896         return fcnt_prog;
5897 }
5898
5899 /**
5900  * i40e_get_global_fd_count - Get total FD filters programmed on device
5901  * @pf: board private structure
5902  **/
5903 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5904 {
5905         u32 val, fcnt_prog;
5906
5907         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5908         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5909                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5910                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5911         return fcnt_prog;
5912 }
5913
5914 /**
5915  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5916  * @pf: board private structure
5917  **/
5918 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5919 {
5920         struct i40e_fdir_filter *filter;
5921         u32 fcnt_prog, fcnt_avail;
5922         struct hlist_node *node;
5923
5924         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5925                 return;
5926
5927         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5928          * to re-enable
5929          */
5930         fcnt_prog = i40e_get_global_fd_count(pf);
5931         fcnt_avail = pf->fdir_pf_filter_count;
5932         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5933             (pf->fd_add_err == 0) ||
5934             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5935                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5936                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5937                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5938                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5939                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5940                 }
5941         }
5942         /* Wait for some more space to be available to turn on ATR */
5943         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5944                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5945                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5946                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5947                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5948                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5949                 }
5950         }
5951
5952         /* if hw had a problem adding a filter, delete it */
5953         if (pf->fd_inv > 0) {
5954                 hlist_for_each_entry_safe(filter, node,
5955                                           &pf->fdir_filter_list, fdir_node) {
5956                         if (filter->fd_id == pf->fd_inv) {
5957                                 hlist_del(&filter->fdir_node);
5958                                 kfree(filter);
5959                                 pf->fdir_pf_active_filters--;
5960                         }
5961                 }
5962         }
5963 }
5964
5965 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5966 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5967 /**
5968  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5969  * @pf: board private structure
5970  **/
5971 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5972 {
5973         unsigned long min_flush_time;
5974         int flush_wait_retry = 50;
5975         bool disable_atr = false;
5976         int fd_room;
5977         int reg;
5978
5979         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5980                 return;
5981
5982         if (!time_after(jiffies, pf->fd_flush_timestamp +
5983                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
5984                 return;
5985
5986         /* If the flush is happening too quick and we have mostly SB rules we
5987          * should not re-enable ATR for some time.
5988          */
5989         min_flush_time = pf->fd_flush_timestamp +
5990                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5991         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5992
5993         if (!(time_after(jiffies, min_flush_time)) &&
5994             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5995                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5996                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5997                 disable_atr = true;
5998         }
5999
6000         pf->fd_flush_timestamp = jiffies;
6001         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
6002         /* flush all filters */
6003         wr32(&pf->hw, I40E_PFQF_CTL_1,
6004              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
6005         i40e_flush(&pf->hw);
6006         pf->fd_flush_cnt++;
6007         pf->fd_add_err = 0;
6008         do {
6009                 /* Check FD flush status every 5-6msec */
6010                 usleep_range(5000, 6000);
6011                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
6012                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
6013                         break;
6014         } while (flush_wait_retry--);
6015         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
6016                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
6017         } else {
6018                 /* replay sideband filters */
6019                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
6020                 if (!disable_atr)
6021                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
6022                 clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
6023                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
6024                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
6025         }
6026 }
6027
6028 /**
6029  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
6030  * @pf: board private structure
6031  **/
6032 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
6033 {
6034         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
6035 }
6036
6037 /* We can see up to 256 filter programming desc in transit if the filters are
6038  * being applied really fast; before we see the first
6039  * filter miss error on Rx queue 0. Accumulating enough error messages before
6040  * reacting will make sure we don't cause flush too often.
6041  */
6042 #define I40E_MAX_FD_PROGRAM_ERROR 256
6043
6044 /**
6045  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
6046  * @pf: board private structure
6047  **/
6048 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
6049 {
6050
6051         /* if interface is down do nothing */
6052         if (test_bit(__I40E_DOWN, &pf->state))
6053                 return;
6054
6055         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
6056                 return;
6057
6058         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
6059                 i40e_fdir_flush_and_replay(pf);
6060
6061         i40e_fdir_check_and_reenable(pf);
6062
6063 }
6064
6065 /**
6066  * i40e_vsi_link_event - notify VSI of a link event
6067  * @vsi: vsi to be notified
6068  * @link_up: link up or down
6069  **/
6070 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
6071 {
6072         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
6073                 return;
6074
6075         switch (vsi->type) {
6076         case I40E_VSI_MAIN:
6077 #ifdef I40E_FCOE
6078         case I40E_VSI_FCOE:
6079 #endif
6080                 if (!vsi->netdev || !vsi->netdev_registered)
6081                         break;
6082
6083                 if (link_up) {
6084                         netif_carrier_on(vsi->netdev);
6085                         netif_tx_wake_all_queues(vsi->netdev);
6086                 } else {
6087                         netif_carrier_off(vsi->netdev);
6088                         netif_tx_stop_all_queues(vsi->netdev);
6089                 }
6090                 break;
6091
6092         case I40E_VSI_SRIOV:
6093         case I40E_VSI_VMDQ2:
6094         case I40E_VSI_CTRL:
6095         case I40E_VSI_IWARP:
6096         case I40E_VSI_MIRROR:
6097         default:
6098                 /* there is no notification for other VSIs */
6099                 break;
6100         }
6101 }
6102
6103 /**
6104  * i40e_veb_link_event - notify elements on the veb of a link event
6105  * @veb: veb to be notified
6106  * @link_up: link up or down
6107  **/
6108 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
6109 {
6110         struct i40e_pf *pf;
6111         int i;
6112
6113         if (!veb || !veb->pf)
6114                 return;
6115         pf = veb->pf;
6116
6117         /* depth first... */
6118         for (i = 0; i < I40E_MAX_VEB; i++)
6119                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
6120                         i40e_veb_link_event(pf->veb[i], link_up);
6121
6122         /* ... now the local VSIs */
6123         for (i = 0; i < pf->num_alloc_vsi; i++)
6124                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
6125                         i40e_vsi_link_event(pf->vsi[i], link_up);
6126 }
6127
6128 /**
6129  * i40e_link_event - Update netif_carrier status
6130  * @pf: board private structure
6131  **/
6132 static void i40e_link_event(struct i40e_pf *pf)
6133 {
6134         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6135         u8 new_link_speed, old_link_speed;
6136         i40e_status status;
6137         bool new_link, old_link;
6138
6139         /* save off old link status information */
6140         pf->hw.phy.link_info_old = pf->hw.phy.link_info;
6141
6142         /* set this to force the get_link_status call to refresh state */
6143         pf->hw.phy.get_link_info = true;
6144
6145         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
6146
6147         status = i40e_get_link_status(&pf->hw, &new_link);
6148         if (status) {
6149                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
6150                         status);
6151                 return;
6152         }
6153
6154         old_link_speed = pf->hw.phy.link_info_old.link_speed;
6155         new_link_speed = pf->hw.phy.link_info.link_speed;
6156
6157         if (new_link == old_link &&
6158             new_link_speed == old_link_speed &&
6159             (test_bit(__I40E_DOWN, &vsi->state) ||
6160              new_link == netif_carrier_ok(vsi->netdev)))
6161                 return;
6162
6163         if (!test_bit(__I40E_DOWN, &vsi->state))
6164                 i40e_print_link_message(vsi, new_link);
6165
6166         /* Notify the base of the switch tree connected to
6167          * the link.  Floating VEBs are not notified.
6168          */
6169         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
6170                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
6171         else
6172                 i40e_vsi_link_event(vsi, new_link);
6173
6174         if (pf->vf)
6175                 i40e_vc_notify_link_state(pf);
6176
6177         if (pf->flags & I40E_FLAG_PTP)
6178                 i40e_ptp_set_increment(pf);
6179 }
6180
6181 /**
6182  * i40e_watchdog_subtask - periodic checks not using event driven response
6183  * @pf: board private structure
6184  **/
6185 static void i40e_watchdog_subtask(struct i40e_pf *pf)
6186 {
6187         int i;
6188
6189         /* if interface is down do nothing */
6190         if (test_bit(__I40E_DOWN, &pf->state) ||
6191             test_bit(__I40E_CONFIG_BUSY, &pf->state))
6192                 return;
6193
6194         /* make sure we don't do these things too often */
6195         if (time_before(jiffies, (pf->service_timer_previous +
6196                                   pf->service_timer_period)))
6197                 return;
6198         pf->service_timer_previous = jiffies;
6199
6200         if (pf->flags & I40E_FLAG_LINK_POLLING_ENABLED)
6201                 i40e_link_event(pf);
6202
6203         /* Update the stats for active netdevs so the network stack
6204          * can look at updated numbers whenever it cares to
6205          */
6206         for (i = 0; i < pf->num_alloc_vsi; i++)
6207                 if (pf->vsi[i] && pf->vsi[i]->netdev)
6208                         i40e_update_stats(pf->vsi[i]);
6209
6210         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
6211                 /* Update the stats for the active switching components */
6212                 for (i = 0; i < I40E_MAX_VEB; i++)
6213                         if (pf->veb[i])
6214                                 i40e_update_veb_stats(pf->veb[i]);
6215         }
6216
6217         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
6218 }
6219
6220 /**
6221  * i40e_reset_subtask - Set up for resetting the device and driver
6222  * @pf: board private structure
6223  **/
6224 static void i40e_reset_subtask(struct i40e_pf *pf)
6225 {
6226         u32 reset_flags = 0;
6227
6228         rtnl_lock();
6229         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
6230                 reset_flags |= BIT(__I40E_REINIT_REQUESTED);
6231                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
6232         }
6233         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
6234                 reset_flags |= BIT(__I40E_PF_RESET_REQUESTED);
6235                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6236         }
6237         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
6238                 reset_flags |= BIT(__I40E_CORE_RESET_REQUESTED);
6239                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
6240         }
6241         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
6242                 reset_flags |= BIT(__I40E_GLOBAL_RESET_REQUESTED);
6243                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
6244         }
6245         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
6246                 reset_flags |= BIT(__I40E_DOWN_REQUESTED);
6247                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
6248         }
6249
6250         /* If there's a recovery already waiting, it takes
6251          * precedence before starting a new reset sequence.
6252          */
6253         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
6254                 i40e_handle_reset_warning(pf);
6255                 goto unlock;
6256         }
6257
6258         /* If we're already down or resetting, just bail */
6259         if (reset_flags &&
6260             !test_bit(__I40E_DOWN, &pf->state) &&
6261             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
6262                 i40e_do_reset(pf, reset_flags);
6263
6264 unlock:
6265         rtnl_unlock();
6266 }
6267
6268 /**
6269  * i40e_handle_link_event - Handle link event
6270  * @pf: board private structure
6271  * @e: event info posted on ARQ
6272  **/
6273 static void i40e_handle_link_event(struct i40e_pf *pf,
6274                                    struct i40e_arq_event_info *e)
6275 {
6276         struct i40e_aqc_get_link_status *status =
6277                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
6278
6279         /* Do a new status request to re-enable LSE reporting
6280          * and load new status information into the hw struct
6281          * This completely ignores any state information
6282          * in the ARQ event info, instead choosing to always
6283          * issue the AQ update link status command.
6284          */
6285         i40e_link_event(pf);
6286
6287         /* check for unqualified module, if link is down */
6288         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
6289             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
6290             (!(status->link_info & I40E_AQ_LINK_UP)))
6291                 dev_err(&pf->pdev->dev,
6292                         "The driver failed to link because an unqualified module was detected.\n");
6293 }
6294
6295 /**
6296  * i40e_clean_adminq_subtask - Clean the AdminQ rings
6297  * @pf: board private structure
6298  **/
6299 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6300 {
6301         struct i40e_arq_event_info event;
6302         struct i40e_hw *hw = &pf->hw;
6303         u16 pending, i = 0;
6304         i40e_status ret;
6305         u16 opcode;
6306         u32 oldval;
6307         u32 val;
6308
6309         /* Do not run clean AQ when PF reset fails */
6310         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6311                 return;
6312
6313         /* check for error indications */
6314         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6315         oldval = val;
6316         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6317                 if (hw->debug_mask & I40E_DEBUG_AQ)
6318                         dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6319                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6320         }
6321         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6322                 if (hw->debug_mask & I40E_DEBUG_AQ)
6323                         dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6324                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6325                 pf->arq_overflows++;
6326         }
6327         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6328                 if (hw->debug_mask & I40E_DEBUG_AQ)
6329                         dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6330                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6331         }
6332         if (oldval != val)
6333                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6334
6335         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6336         oldval = val;
6337         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6338                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6339                         dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6340                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6341         }
6342         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6343                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6344                         dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6345                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6346         }
6347         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6348                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6349                         dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6350                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6351         }
6352         if (oldval != val)
6353                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6354
6355         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6356         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6357         if (!event.msg_buf)
6358                 return;
6359
6360         do {
6361                 ret = i40e_clean_arq_element(hw, &event, &pending);
6362                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6363                         break;
6364                 else if (ret) {
6365                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6366                         break;
6367                 }
6368
6369                 opcode = le16_to_cpu(event.desc.opcode);
6370                 switch (opcode) {
6371
6372                 case i40e_aqc_opc_get_link_status:
6373                         i40e_handle_link_event(pf, &event);
6374                         break;
6375                 case i40e_aqc_opc_send_msg_to_pf:
6376                         ret = i40e_vc_process_vf_msg(pf,
6377                                         le16_to_cpu(event.desc.retval),
6378                                         le32_to_cpu(event.desc.cookie_high),
6379                                         le32_to_cpu(event.desc.cookie_low),
6380                                         event.msg_buf,
6381                                         event.msg_len);
6382                         break;
6383                 case i40e_aqc_opc_lldp_update_mib:
6384                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6385 #ifdef CONFIG_I40E_DCB
6386                         rtnl_lock();
6387                         ret = i40e_handle_lldp_event(pf, &event);
6388                         rtnl_unlock();
6389 #endif /* CONFIG_I40E_DCB */
6390                         break;
6391                 case i40e_aqc_opc_event_lan_overflow:
6392                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6393                         i40e_handle_lan_overflow_event(pf, &event);
6394                         break;
6395                 case i40e_aqc_opc_send_msg_to_peer:
6396                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6397                         break;
6398                 case i40e_aqc_opc_nvm_erase:
6399                 case i40e_aqc_opc_nvm_update:
6400                 case i40e_aqc_opc_oem_post_update:
6401                         i40e_debug(&pf->hw, I40E_DEBUG_NVM,
6402                                    "ARQ NVM operation 0x%04x completed\n",
6403                                    opcode);
6404                         break;
6405                 default:
6406                         dev_info(&pf->pdev->dev,
6407                                  "ARQ: Unknown event 0x%04x ignored\n",
6408                                  opcode);
6409                         break;
6410                 }
6411         } while (pending && (i++ < pf->adminq_work_limit));
6412
6413         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6414         /* re-enable Admin queue interrupt cause */
6415         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6416         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6417         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6418         i40e_flush(hw);
6419
6420         kfree(event.msg_buf);
6421 }
6422
6423 /**
6424  * i40e_verify_eeprom - make sure eeprom is good to use
6425  * @pf: board private structure
6426  **/
6427 static void i40e_verify_eeprom(struct i40e_pf *pf)
6428 {
6429         int err;
6430
6431         err = i40e_diag_eeprom_test(&pf->hw);
6432         if (err) {
6433                 /* retry in case of garbage read */
6434                 err = i40e_diag_eeprom_test(&pf->hw);
6435                 if (err) {
6436                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6437                                  err);
6438                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6439                 }
6440         }
6441
6442         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6443                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6444                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6445         }
6446 }
6447
6448 /**
6449  * i40e_enable_pf_switch_lb
6450  * @pf: pointer to the PF structure
6451  *
6452  * enable switch loop back or die - no point in a return value
6453  **/
6454 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6455 {
6456         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6457         struct i40e_vsi_context ctxt;
6458         int ret;
6459
6460         ctxt.seid = pf->main_vsi_seid;
6461         ctxt.pf_num = pf->hw.pf_id;
6462         ctxt.vf_num = 0;
6463         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6464         if (ret) {
6465                 dev_info(&pf->pdev->dev,
6466                          "couldn't get PF vsi config, err %s aq_err %s\n",
6467                          i40e_stat_str(&pf->hw, ret),
6468                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6469                 return;
6470         }
6471         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6472         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6473         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6474
6475         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6476         if (ret) {
6477                 dev_info(&pf->pdev->dev,
6478                          "update vsi switch failed, err %s aq_err %s\n",
6479                          i40e_stat_str(&pf->hw, ret),
6480                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6481         }
6482 }
6483
6484 /**
6485  * i40e_disable_pf_switch_lb
6486  * @pf: pointer to the PF structure
6487  *
6488  * disable switch loop back or die - no point in a return value
6489  **/
6490 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6491 {
6492         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6493         struct i40e_vsi_context ctxt;
6494         int ret;
6495
6496         ctxt.seid = pf->main_vsi_seid;
6497         ctxt.pf_num = pf->hw.pf_id;
6498         ctxt.vf_num = 0;
6499         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6500         if (ret) {
6501                 dev_info(&pf->pdev->dev,
6502                          "couldn't get PF vsi config, err %s aq_err %s\n",
6503                          i40e_stat_str(&pf->hw, ret),
6504                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6505                 return;
6506         }
6507         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6508         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6509         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6510
6511         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6512         if (ret) {
6513                 dev_info(&pf->pdev->dev,
6514                          "update vsi switch failed, err %s aq_err %s\n",
6515                          i40e_stat_str(&pf->hw, ret),
6516                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6517         }
6518 }
6519
6520 /**
6521  * i40e_config_bridge_mode - Configure the HW bridge mode
6522  * @veb: pointer to the bridge instance
6523  *
6524  * Configure the loop back mode for the LAN VSI that is downlink to the
6525  * specified HW bridge instance. It is expected this function is called
6526  * when a new HW bridge is instantiated.
6527  **/
6528 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6529 {
6530         struct i40e_pf *pf = veb->pf;
6531
6532         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
6533                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6534                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6535         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6536                 i40e_disable_pf_switch_lb(pf);
6537         else
6538                 i40e_enable_pf_switch_lb(pf);
6539 }
6540
6541 /**
6542  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6543  * @veb: pointer to the VEB instance
6544  *
6545  * This is a recursive function that first builds the attached VSIs then
6546  * recurses in to build the next layer of VEB.  We track the connections
6547  * through our own index numbers because the seid's from the HW could
6548  * change across the reset.
6549  **/
6550 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6551 {
6552         struct i40e_vsi *ctl_vsi = NULL;
6553         struct i40e_pf *pf = veb->pf;
6554         int v, veb_idx;
6555         int ret;
6556
6557         /* build VSI that owns this VEB, temporarily attached to base VEB */
6558         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6559                 if (pf->vsi[v] &&
6560                     pf->vsi[v]->veb_idx == veb->idx &&
6561                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6562                         ctl_vsi = pf->vsi[v];
6563                         break;
6564                 }
6565         }
6566         if (!ctl_vsi) {
6567                 dev_info(&pf->pdev->dev,
6568                          "missing owner VSI for veb_idx %d\n", veb->idx);
6569                 ret = -ENOENT;
6570                 goto end_reconstitute;
6571         }
6572         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6573                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6574         ret = i40e_add_vsi(ctl_vsi);
6575         if (ret) {
6576                 dev_info(&pf->pdev->dev,
6577                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6578                          veb->idx, ret);
6579                 goto end_reconstitute;
6580         }
6581         i40e_vsi_reset_stats(ctl_vsi);
6582
6583         /* create the VEB in the switch and move the VSI onto the VEB */
6584         ret = i40e_add_veb(veb, ctl_vsi);
6585         if (ret)
6586                 goto end_reconstitute;
6587
6588         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6589                 veb->bridge_mode = BRIDGE_MODE_VEB;
6590         else
6591                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6592         i40e_config_bridge_mode(veb);
6593
6594         /* create the remaining VSIs attached to this VEB */
6595         for (v = 0; v < pf->num_alloc_vsi; v++) {
6596                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6597                         continue;
6598
6599                 if (pf->vsi[v]->veb_idx == veb->idx) {
6600                         struct i40e_vsi *vsi = pf->vsi[v];
6601
6602                         vsi->uplink_seid = veb->seid;
6603                         ret = i40e_add_vsi(vsi);
6604                         if (ret) {
6605                                 dev_info(&pf->pdev->dev,
6606                                          "rebuild of vsi_idx %d failed: %d\n",
6607                                          v, ret);
6608                                 goto end_reconstitute;
6609                         }
6610                         i40e_vsi_reset_stats(vsi);
6611                 }
6612         }
6613
6614         /* create any VEBs attached to this VEB - RECURSION */
6615         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6616                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6617                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6618                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6619                         if (ret)
6620                                 break;
6621                 }
6622         }
6623
6624 end_reconstitute:
6625         return ret;
6626 }
6627
6628 /**
6629  * i40e_get_capabilities - get info about the HW
6630  * @pf: the PF struct
6631  **/
6632 static int i40e_get_capabilities(struct i40e_pf *pf)
6633 {
6634         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6635         u16 data_size;
6636         int buf_len;
6637         int err;
6638
6639         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6640         do {
6641                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6642                 if (!cap_buf)
6643                         return -ENOMEM;
6644
6645                 /* this loads the data into the hw struct for us */
6646                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6647                                             &data_size,
6648                                             i40e_aqc_opc_list_func_capabilities,
6649                                             NULL);
6650                 /* data loaded, buffer no longer needed */
6651                 kfree(cap_buf);
6652
6653                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6654                         /* retry with a larger buffer */
6655                         buf_len = data_size;
6656                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6657                         dev_info(&pf->pdev->dev,
6658                                  "capability discovery failed, err %s aq_err %s\n",
6659                                  i40e_stat_str(&pf->hw, err),
6660                                  i40e_aq_str(&pf->hw,
6661                                              pf->hw.aq.asq_last_status));
6662                         return -ENODEV;
6663                 }
6664         } while (err);
6665
6666         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6667                 dev_info(&pf->pdev->dev,
6668                          "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",
6669                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6670                          pf->hw.func_caps.num_msix_vectors,
6671                          pf->hw.func_caps.num_msix_vectors_vf,
6672                          pf->hw.func_caps.fd_filters_guaranteed,
6673                          pf->hw.func_caps.fd_filters_best_effort,
6674                          pf->hw.func_caps.num_tx_qp,
6675                          pf->hw.func_caps.num_vsis);
6676
6677 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6678                        + pf->hw.func_caps.num_vfs)
6679         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6680                 dev_info(&pf->pdev->dev,
6681                          "got num_vsis %d, setting num_vsis to %d\n",
6682                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6683                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6684         }
6685
6686         return 0;
6687 }
6688
6689 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6690
6691 /**
6692  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6693  * @pf: board private structure
6694  **/
6695 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6696 {
6697         struct i40e_vsi *vsi;
6698         int i;
6699
6700         /* quick workaround for an NVM issue that leaves a critical register
6701          * uninitialized
6702          */
6703         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6704                 static const u32 hkey[] = {
6705                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6706                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6707                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6708                         0x95b3a76d};
6709
6710                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6711                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6712         }
6713
6714         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6715                 return;
6716
6717         /* find existing VSI and see if it needs configuring */
6718         vsi = NULL;
6719         for (i = 0; i < pf->num_alloc_vsi; i++) {
6720                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6721                         vsi = pf->vsi[i];
6722                         break;
6723                 }
6724         }
6725
6726         /* create a new VSI if none exists */
6727         if (!vsi) {
6728                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6729                                      pf->vsi[pf->lan_vsi]->seid, 0);
6730                 if (!vsi) {
6731                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6732                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6733                         return;
6734                 }
6735         }
6736
6737         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6738 }
6739
6740 /**
6741  * i40e_fdir_teardown - release the Flow Director resources
6742  * @pf: board private structure
6743  **/
6744 static void i40e_fdir_teardown(struct i40e_pf *pf)
6745 {
6746         int i;
6747
6748         i40e_fdir_filter_exit(pf);
6749         for (i = 0; i < pf->num_alloc_vsi; i++) {
6750                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6751                         i40e_vsi_release(pf->vsi[i]);
6752                         break;
6753                 }
6754         }
6755 }
6756
6757 /**
6758  * i40e_prep_for_reset - prep for the core to reset
6759  * @pf: board private structure
6760  *
6761  * Close up the VFs and other things in prep for PF Reset.
6762   **/
6763 static void i40e_prep_for_reset(struct i40e_pf *pf)
6764 {
6765         struct i40e_hw *hw = &pf->hw;
6766         i40e_status ret = 0;
6767         u32 v;
6768
6769         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6770         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6771                 return;
6772         if (i40e_check_asq_alive(&pf->hw))
6773                 i40e_vc_notify_reset(pf);
6774
6775         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6776
6777         /* quiesce the VSIs and their queues that are not already DOWN */
6778         i40e_pf_quiesce_all_vsi(pf);
6779
6780         for (v = 0; v < pf->num_alloc_vsi; v++) {
6781                 if (pf->vsi[v])
6782                         pf->vsi[v]->seid = 0;
6783         }
6784
6785         i40e_shutdown_adminq(&pf->hw);
6786
6787         /* call shutdown HMC */
6788         if (hw->hmc.hmc_obj) {
6789                 ret = i40e_shutdown_lan_hmc(hw);
6790                 if (ret)
6791                         dev_warn(&pf->pdev->dev,
6792                                  "shutdown_lan_hmc failed: %d\n", ret);
6793         }
6794 }
6795
6796 /**
6797  * i40e_send_version - update firmware with driver version
6798  * @pf: PF struct
6799  */
6800 static void i40e_send_version(struct i40e_pf *pf)
6801 {
6802         struct i40e_driver_version dv;
6803
6804         dv.major_version = DRV_VERSION_MAJOR;
6805         dv.minor_version = DRV_VERSION_MINOR;
6806         dv.build_version = DRV_VERSION_BUILD;
6807         dv.subbuild_version = 0;
6808         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6809         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6810 }
6811
6812 /**
6813  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6814  * @pf: board private structure
6815  * @reinit: if the Main VSI needs to re-initialized.
6816  **/
6817 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6818 {
6819         struct i40e_hw *hw = &pf->hw;
6820         u8 set_fc_aq_fail = 0;
6821         i40e_status ret;
6822         u32 val;
6823         u32 v;
6824
6825         /* Now we wait for GRST to settle out.
6826          * We don't have to delete the VEBs or VSIs from the hw switch
6827          * because the reset will make them disappear.
6828          */
6829         ret = i40e_pf_reset(hw);
6830         if (ret) {
6831                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6832                 set_bit(__I40E_RESET_FAILED, &pf->state);
6833                 goto clear_recovery;
6834         }
6835         pf->pfr_count++;
6836
6837         if (test_bit(__I40E_DOWN, &pf->state))
6838                 goto clear_recovery;
6839         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6840
6841         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6842         ret = i40e_init_adminq(&pf->hw);
6843         if (ret) {
6844                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6845                          i40e_stat_str(&pf->hw, ret),
6846                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6847                 goto clear_recovery;
6848         }
6849
6850         /* re-verify the eeprom if we just had an EMP reset */
6851         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6852                 i40e_verify_eeprom(pf);
6853
6854         i40e_clear_pxe_mode(hw);
6855         ret = i40e_get_capabilities(pf);
6856         if (ret)
6857                 goto end_core_reset;
6858
6859         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6860                                 hw->func_caps.num_rx_qp,
6861                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6862         if (ret) {
6863                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6864                 goto end_core_reset;
6865         }
6866         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6867         if (ret) {
6868                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6869                 goto end_core_reset;
6870         }
6871
6872 #ifdef CONFIG_I40E_DCB
6873         ret = i40e_init_pf_dcb(pf);
6874         if (ret) {
6875                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6876                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6877                 /* Continue without DCB enabled */
6878         }
6879 #endif /* CONFIG_I40E_DCB */
6880 #ifdef I40E_FCOE
6881         i40e_init_pf_fcoe(pf);
6882
6883 #endif
6884         /* do basic switch setup */
6885         ret = i40e_setup_pf_switch(pf, reinit);
6886         if (ret)
6887                 goto end_core_reset;
6888
6889         /* The driver only wants link up/down and module qualification
6890          * reports from firmware.  Note the negative logic.
6891          */
6892         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6893                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
6894                                          I40E_AQ_EVENT_MEDIA_NA |
6895                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
6896         if (ret)
6897                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6898                          i40e_stat_str(&pf->hw, ret),
6899                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6900
6901         /* make sure our flow control settings are restored */
6902         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6903         if (ret)
6904                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
6905                         i40e_stat_str(&pf->hw, ret),
6906                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6907
6908         /* Rebuild the VSIs and VEBs that existed before reset.
6909          * They are still in our local switch element arrays, so only
6910          * need to rebuild the switch model in the HW.
6911          *
6912          * If there were VEBs but the reconstitution failed, we'll try
6913          * try to recover minimal use by getting the basic PF VSI working.
6914          */
6915         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6916                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6917                 /* find the one VEB connected to the MAC, and find orphans */
6918                 for (v = 0; v < I40E_MAX_VEB; v++) {
6919                         if (!pf->veb[v])
6920                                 continue;
6921
6922                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6923                             pf->veb[v]->uplink_seid == 0) {
6924                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6925
6926                                 if (!ret)
6927                                         continue;
6928
6929                                 /* If Main VEB failed, we're in deep doodoo,
6930                                  * so give up rebuilding the switch and set up
6931                                  * for minimal rebuild of PF VSI.
6932                                  * If orphan failed, we'll report the error
6933                                  * but try to keep going.
6934                                  */
6935                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6936                                         dev_info(&pf->pdev->dev,
6937                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6938                                                  ret);
6939                                         pf->vsi[pf->lan_vsi]->uplink_seid
6940                                                                 = pf->mac_seid;
6941                                         break;
6942                                 } else if (pf->veb[v]->uplink_seid == 0) {
6943                                         dev_info(&pf->pdev->dev,
6944                                                  "rebuild of orphan VEB failed: %d\n",
6945                                                  ret);
6946                                 }
6947                         }
6948                 }
6949         }
6950
6951         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6952                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6953                 /* no VEB, so rebuild only the Main VSI */
6954                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6955                 if (ret) {
6956                         dev_info(&pf->pdev->dev,
6957                                  "rebuild of Main VSI failed: %d\n", ret);
6958                         goto end_core_reset;
6959                 }
6960         }
6961
6962         /* Reconfigure hardware for allowing smaller MSS in the case
6963          * of TSO, so that we avoid the MDD being fired and causing
6964          * a reset in the case of small MSS+TSO.
6965          */
6966 #define I40E_REG_MSS          0x000E64DC
6967 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
6968 #define I40E_64BYTE_MSS       0x400000
6969         val = rd32(hw, I40E_REG_MSS);
6970         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
6971                 val &= ~I40E_REG_MSS_MIN_MASK;
6972                 val |= I40E_64BYTE_MSS;
6973                 wr32(hw, I40E_REG_MSS, val);
6974         }
6975
6976         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
6977                 msleep(75);
6978                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6979                 if (ret)
6980                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6981                                  i40e_stat_str(&pf->hw, ret),
6982                                  i40e_aq_str(&pf->hw,
6983                                              pf->hw.aq.asq_last_status));
6984         }
6985         /* reinit the misc interrupt */
6986         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6987                 ret = i40e_setup_misc_vector(pf);
6988
6989         /* Add a filter to drop all Flow control frames from any VSI from being
6990          * transmitted. By doing so we stop a malicious VF from sending out
6991          * PAUSE or PFC frames and potentially controlling traffic for other
6992          * PF/VF VSIs.
6993          * The FW can still send Flow control frames if enabled.
6994          */
6995         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
6996                                                        pf->main_vsi_seid);
6997
6998         /* restart the VSIs that were rebuilt and running before the reset */
6999         i40e_pf_unquiesce_all_vsi(pf);
7000
7001         if (pf->num_alloc_vfs) {
7002                 for (v = 0; v < pf->num_alloc_vfs; v++)
7003                         i40e_reset_vf(&pf->vf[v], true);
7004         }
7005
7006         /* tell the firmware that we're starting */
7007         i40e_send_version(pf);
7008
7009 end_core_reset:
7010         clear_bit(__I40E_RESET_FAILED, &pf->state);
7011 clear_recovery:
7012         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
7013 }
7014
7015 /**
7016  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
7017  * @pf: board private structure
7018  *
7019  * Close up the VFs and other things in prep for a Core Reset,
7020  * then get ready to rebuild the world.
7021  **/
7022 static void i40e_handle_reset_warning(struct i40e_pf *pf)
7023 {
7024         i40e_prep_for_reset(pf);
7025         i40e_reset_and_rebuild(pf, false);
7026 }
7027
7028 /**
7029  * i40e_handle_mdd_event
7030  * @pf: pointer to the PF structure
7031  *
7032  * Called from the MDD irq handler to identify possibly malicious vfs
7033  **/
7034 static void i40e_handle_mdd_event(struct i40e_pf *pf)
7035 {
7036         struct i40e_hw *hw = &pf->hw;
7037         bool mdd_detected = false;
7038         bool pf_mdd_detected = false;
7039         struct i40e_vf *vf;
7040         u32 reg;
7041         int i;
7042
7043         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
7044                 return;
7045
7046         /* find what triggered the MDD event */
7047         reg = rd32(hw, I40E_GL_MDET_TX);
7048         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
7049                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
7050                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
7051                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
7052                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
7053                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
7054                                 I40E_GL_MDET_TX_EVENT_SHIFT;
7055                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
7056                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
7057                                 pf->hw.func_caps.base_queue;
7058                 if (netif_msg_tx_err(pf))
7059                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
7060                                  event, queue, pf_num, vf_num);
7061                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
7062                 mdd_detected = true;
7063         }
7064         reg = rd32(hw, I40E_GL_MDET_RX);
7065         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
7066                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
7067                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
7068                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
7069                                 I40E_GL_MDET_RX_EVENT_SHIFT;
7070                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
7071                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
7072                                 pf->hw.func_caps.base_queue;
7073                 if (netif_msg_rx_err(pf))
7074                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
7075                                  event, queue, func);
7076                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
7077                 mdd_detected = true;
7078         }
7079
7080         if (mdd_detected) {
7081                 reg = rd32(hw, I40E_PF_MDET_TX);
7082                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
7083                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
7084                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
7085                         pf_mdd_detected = true;
7086                 }
7087                 reg = rd32(hw, I40E_PF_MDET_RX);
7088                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
7089                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
7090                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
7091                         pf_mdd_detected = true;
7092                 }
7093                 /* Queue belongs to the PF, initiate a reset */
7094                 if (pf_mdd_detected) {
7095                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
7096                         i40e_service_event_schedule(pf);
7097                 }
7098         }
7099
7100         /* see if one of the VFs needs its hand slapped */
7101         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
7102                 vf = &(pf->vf[i]);
7103                 reg = rd32(hw, I40E_VP_MDET_TX(i));
7104                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
7105                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
7106                         vf->num_mdd_events++;
7107                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
7108                                  i);
7109                 }
7110
7111                 reg = rd32(hw, I40E_VP_MDET_RX(i));
7112                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
7113                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
7114                         vf->num_mdd_events++;
7115                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
7116                                  i);
7117                 }
7118
7119                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
7120                         dev_info(&pf->pdev->dev,
7121                                  "Too many MDD events on VF %d, disabled\n", i);
7122                         dev_info(&pf->pdev->dev,
7123                                  "Use PF Control I/F to re-enable the VF\n");
7124                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
7125                 }
7126         }
7127
7128         /* re-enable mdd interrupt cause */
7129         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
7130         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
7131         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
7132         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
7133         i40e_flush(hw);
7134 }
7135
7136 /**
7137  * i40e_sync_udp_filters_subtask - Sync the VSI filter list with HW
7138  * @pf: board private structure
7139  **/
7140 static void i40e_sync_udp_filters_subtask(struct i40e_pf *pf)
7141 {
7142         struct i40e_hw *hw = &pf->hw;
7143         i40e_status ret;
7144         __be16 port;
7145         int i;
7146
7147         if (!(pf->flags & I40E_FLAG_UDP_FILTER_SYNC))
7148                 return;
7149
7150         pf->flags &= ~I40E_FLAG_UDP_FILTER_SYNC;
7151
7152         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7153                 if (pf->pending_udp_bitmap & BIT_ULL(i)) {
7154                         pf->pending_udp_bitmap &= ~BIT_ULL(i);
7155                         port = pf->udp_ports[i].index;
7156                         if (port)
7157                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
7158                                                      pf->udp_ports[i].type,
7159                                                      NULL, NULL);
7160                         else
7161                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
7162
7163                         if (ret) {
7164                                 dev_dbg(&pf->pdev->dev,
7165                                         "%s %s port %d, index %d failed, err %s aq_err %s\n",
7166                                         pf->udp_ports[i].type ? "vxlan" : "geneve",
7167                                         port ? "add" : "delete",
7168                                         ntohs(port), i,
7169                                         i40e_stat_str(&pf->hw, ret),
7170                                         i40e_aq_str(&pf->hw,
7171                                                     pf->hw.aq.asq_last_status));
7172                                 pf->udp_ports[i].index = 0;
7173                         }
7174                 }
7175         }
7176 }
7177
7178 /**
7179  * i40e_service_task - Run the driver's async subtasks
7180  * @work: pointer to work_struct containing our data
7181  **/
7182 static void i40e_service_task(struct work_struct *work)
7183 {
7184         struct i40e_pf *pf = container_of(work,
7185                                           struct i40e_pf,
7186                                           service_task);
7187         unsigned long start_time = jiffies;
7188
7189         /* don't bother with service tasks if a reset is in progress */
7190         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7191                 i40e_service_event_complete(pf);
7192                 return;
7193         }
7194
7195         i40e_detect_recover_hung(pf);
7196         i40e_sync_filters_subtask(pf);
7197         i40e_reset_subtask(pf);
7198         i40e_handle_mdd_event(pf);
7199         i40e_vc_process_vflr_event(pf);
7200         i40e_watchdog_subtask(pf);
7201         i40e_fdir_reinit_subtask(pf);
7202         i40e_client_subtask(pf);
7203         i40e_sync_filters_subtask(pf);
7204         i40e_sync_udp_filters_subtask(pf);
7205         i40e_clean_adminq_subtask(pf);
7206
7207         i40e_service_event_complete(pf);
7208
7209         /* If the tasks have taken longer than one timer cycle or there
7210          * is more work to be done, reschedule the service task now
7211          * rather than wait for the timer to tick again.
7212          */
7213         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
7214             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
7215             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
7216             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
7217                 i40e_service_event_schedule(pf);
7218 }
7219
7220 /**
7221  * i40e_service_timer - timer callback
7222  * @data: pointer to PF struct
7223  **/
7224 static void i40e_service_timer(unsigned long data)
7225 {
7226         struct i40e_pf *pf = (struct i40e_pf *)data;
7227
7228         mod_timer(&pf->service_timer,
7229                   round_jiffies(jiffies + pf->service_timer_period));
7230         i40e_service_event_schedule(pf);
7231 }
7232
7233 /**
7234  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
7235  * @vsi: the VSI being configured
7236  **/
7237 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
7238 {
7239         struct i40e_pf *pf = vsi->back;
7240
7241         switch (vsi->type) {
7242         case I40E_VSI_MAIN:
7243                 vsi->alloc_queue_pairs = pf->num_lan_qps;
7244                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7245                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7246                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7247                         vsi->num_q_vectors = pf->num_lan_msix;
7248                 else
7249                         vsi->num_q_vectors = 1;
7250
7251                 break;
7252
7253         case I40E_VSI_FDIR:
7254                 vsi->alloc_queue_pairs = 1;
7255                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
7256                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7257                 vsi->num_q_vectors = pf->num_fdsb_msix;
7258                 break;
7259
7260         case I40E_VSI_VMDQ2:
7261                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
7262                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7263                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7264                 vsi->num_q_vectors = pf->num_vmdq_msix;
7265                 break;
7266
7267         case I40E_VSI_SRIOV:
7268                 vsi->alloc_queue_pairs = pf->num_vf_qps;
7269                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7270                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7271                 break;
7272
7273 #ifdef I40E_FCOE
7274         case I40E_VSI_FCOE:
7275                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
7276                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7277                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7278                 vsi->num_q_vectors = pf->num_fcoe_msix;
7279                 break;
7280
7281 #endif /* I40E_FCOE */
7282         default:
7283                 WARN_ON(1);
7284                 return -ENODATA;
7285         }
7286
7287         return 0;
7288 }
7289
7290 /**
7291  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
7292  * @type: VSI pointer
7293  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
7294  *
7295  * On error: returns error code (negative)
7296  * On success: returns 0
7297  **/
7298 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
7299 {
7300         int size;
7301         int ret = 0;
7302
7303         /* allocate memory for both Tx and Rx ring pointers */
7304         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
7305         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
7306         if (!vsi->tx_rings)
7307                 return -ENOMEM;
7308         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
7309
7310         if (alloc_qvectors) {
7311                 /* allocate memory for q_vector pointers */
7312                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
7313                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
7314                 if (!vsi->q_vectors) {
7315                         ret = -ENOMEM;
7316                         goto err_vectors;
7317                 }
7318         }
7319         return ret;
7320
7321 err_vectors:
7322         kfree(vsi->tx_rings);
7323         return ret;
7324 }
7325
7326 /**
7327  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
7328  * @pf: board private structure
7329  * @type: type of VSI
7330  *
7331  * On error: returns error code (negative)
7332  * On success: returns vsi index in PF (positive)
7333  **/
7334 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7335 {
7336         int ret = -ENODEV;
7337         struct i40e_vsi *vsi;
7338         int vsi_idx;
7339         int i;
7340
7341         /* Need to protect the allocation of the VSIs at the PF level */
7342         mutex_lock(&pf->switch_mutex);
7343
7344         /* VSI list may be fragmented if VSI creation/destruction has
7345          * been happening.  We can afford to do a quick scan to look
7346          * for any free VSIs in the list.
7347          *
7348          * find next empty vsi slot, looping back around if necessary
7349          */
7350         i = pf->next_vsi;
7351         while (i < pf->num_alloc_vsi && pf->vsi[i])
7352                 i++;
7353         if (i >= pf->num_alloc_vsi) {
7354                 i = 0;
7355                 while (i < pf->next_vsi && pf->vsi[i])
7356                         i++;
7357         }
7358
7359         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7360                 vsi_idx = i;             /* Found one! */
7361         } else {
7362                 ret = -ENODEV;
7363                 goto unlock_pf;  /* out of VSI slots! */
7364         }
7365         pf->next_vsi = ++i;
7366
7367         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7368         if (!vsi) {
7369                 ret = -ENOMEM;
7370                 goto unlock_pf;
7371         }
7372         vsi->type = type;
7373         vsi->back = pf;
7374         set_bit(__I40E_DOWN, &vsi->state);
7375         vsi->flags = 0;
7376         vsi->idx = vsi_idx;
7377         vsi->int_rate_limit = 0;
7378         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7379                                 pf->rss_table_size : 64;
7380         vsi->netdev_registered = false;
7381         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7382         INIT_LIST_HEAD(&vsi->mac_filter_list);
7383         vsi->irqs_ready = false;
7384
7385         ret = i40e_set_num_rings_in_vsi(vsi);
7386         if (ret)
7387                 goto err_rings;
7388
7389         ret = i40e_vsi_alloc_arrays(vsi, true);
7390         if (ret)
7391                 goto err_rings;
7392
7393         /* Setup default MSIX irq handler for VSI */
7394         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7395
7396         /* Initialize VSI lock */
7397         spin_lock_init(&vsi->mac_filter_list_lock);
7398         pf->vsi[vsi_idx] = vsi;
7399         ret = vsi_idx;
7400         goto unlock_pf;
7401
7402 err_rings:
7403         pf->next_vsi = i - 1;
7404         kfree(vsi);
7405 unlock_pf:
7406         mutex_unlock(&pf->switch_mutex);
7407         return ret;
7408 }
7409
7410 /**
7411  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7412  * @type: VSI pointer
7413  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7414  *
7415  * On error: returns error code (negative)
7416  * On success: returns 0
7417  **/
7418 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7419 {
7420         /* free the ring and vector containers */
7421         if (free_qvectors) {
7422                 kfree(vsi->q_vectors);
7423                 vsi->q_vectors = NULL;
7424         }
7425         kfree(vsi->tx_rings);
7426         vsi->tx_rings = NULL;
7427         vsi->rx_rings = NULL;
7428 }
7429
7430 /**
7431  * i40e_clear_rss_config_user - clear the user configured RSS hash keys
7432  * and lookup table
7433  * @vsi: Pointer to VSI structure
7434  */
7435 static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
7436 {
7437         if (!vsi)
7438                 return;
7439
7440         kfree(vsi->rss_hkey_user);
7441         vsi->rss_hkey_user = NULL;
7442
7443         kfree(vsi->rss_lut_user);
7444         vsi->rss_lut_user = NULL;
7445 }
7446
7447 /**
7448  * i40e_vsi_clear - Deallocate the VSI provided
7449  * @vsi: the VSI being un-configured
7450  **/
7451 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7452 {
7453         struct i40e_pf *pf;
7454
7455         if (!vsi)
7456                 return 0;
7457
7458         if (!vsi->back)
7459                 goto free_vsi;
7460         pf = vsi->back;
7461
7462         mutex_lock(&pf->switch_mutex);
7463         if (!pf->vsi[vsi->idx]) {
7464                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7465                         vsi->idx, vsi->idx, vsi, vsi->type);
7466                 goto unlock_vsi;
7467         }
7468
7469         if (pf->vsi[vsi->idx] != vsi) {
7470                 dev_err(&pf->pdev->dev,
7471                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7472                         pf->vsi[vsi->idx]->idx,
7473                         pf->vsi[vsi->idx],
7474                         pf->vsi[vsi->idx]->type,
7475                         vsi->idx, vsi, vsi->type);
7476                 goto unlock_vsi;
7477         }
7478
7479         /* updates the PF for this cleared vsi */
7480         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7481         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7482
7483         i40e_vsi_free_arrays(vsi, true);
7484         i40e_clear_rss_config_user(vsi);
7485
7486         pf->vsi[vsi->idx] = NULL;
7487         if (vsi->idx < pf->next_vsi)
7488                 pf->next_vsi = vsi->idx;
7489
7490 unlock_vsi:
7491         mutex_unlock(&pf->switch_mutex);
7492 free_vsi:
7493         kfree(vsi);
7494
7495         return 0;
7496 }
7497
7498 /**
7499  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7500  * @vsi: the VSI being cleaned
7501  **/
7502 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7503 {
7504         int i;
7505
7506         if (vsi->tx_rings && vsi->tx_rings[0]) {
7507                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7508                         kfree_rcu(vsi->tx_rings[i], rcu);
7509                         vsi->tx_rings[i] = NULL;
7510                         vsi->rx_rings[i] = NULL;
7511                 }
7512         }
7513 }
7514
7515 /**
7516  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7517  * @vsi: the VSI being configured
7518  **/
7519 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7520 {
7521         struct i40e_ring *tx_ring, *rx_ring;
7522         struct i40e_pf *pf = vsi->back;
7523         int i;
7524
7525         /* Set basic values in the rings to be used later during open() */
7526         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7527                 /* allocate space for both Tx and Rx in one shot */
7528                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7529                 if (!tx_ring)
7530                         goto err_out;
7531
7532                 tx_ring->queue_index = i;
7533                 tx_ring->reg_idx = vsi->base_queue + i;
7534                 tx_ring->ring_active = false;
7535                 tx_ring->vsi = vsi;
7536                 tx_ring->netdev = vsi->netdev;
7537                 tx_ring->dev = &pf->pdev->dev;
7538                 tx_ring->count = vsi->num_desc;
7539                 tx_ring->size = 0;
7540                 tx_ring->dcb_tc = 0;
7541                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7542                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7543                 tx_ring->tx_itr_setting = pf->tx_itr_default;
7544                 vsi->tx_rings[i] = tx_ring;
7545
7546                 rx_ring = &tx_ring[1];
7547                 rx_ring->queue_index = i;
7548                 rx_ring->reg_idx = vsi->base_queue + i;
7549                 rx_ring->ring_active = false;
7550                 rx_ring->vsi = vsi;
7551                 rx_ring->netdev = vsi->netdev;
7552                 rx_ring->dev = &pf->pdev->dev;
7553                 rx_ring->count = vsi->num_desc;
7554                 rx_ring->size = 0;
7555                 rx_ring->dcb_tc = 0;
7556                 rx_ring->rx_itr_setting = pf->rx_itr_default;
7557                 vsi->rx_rings[i] = rx_ring;
7558         }
7559
7560         return 0;
7561
7562 err_out:
7563         i40e_vsi_clear_rings(vsi);
7564         return -ENOMEM;
7565 }
7566
7567 /**
7568  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7569  * @pf: board private structure
7570  * @vectors: the number of MSI-X vectors to request
7571  *
7572  * Returns the number of vectors reserved, or error
7573  **/
7574 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7575 {
7576         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7577                                         I40E_MIN_MSIX, vectors);
7578         if (vectors < 0) {
7579                 dev_info(&pf->pdev->dev,
7580                          "MSI-X vector reservation failed: %d\n", vectors);
7581                 vectors = 0;
7582         }
7583
7584         return vectors;
7585 }
7586
7587 /**
7588  * i40e_init_msix - Setup the MSIX capability
7589  * @pf: board private structure
7590  *
7591  * Work with the OS to set up the MSIX vectors needed.
7592  *
7593  * Returns the number of vectors reserved or negative on failure
7594  **/
7595 static int i40e_init_msix(struct i40e_pf *pf)
7596 {
7597         struct i40e_hw *hw = &pf->hw;
7598         int vectors_left;
7599         int v_budget, i;
7600         int v_actual;
7601         int iwarp_requested = 0;
7602
7603         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7604                 return -ENODEV;
7605
7606         /* The number of vectors we'll request will be comprised of:
7607          *   - Add 1 for "other" cause for Admin Queue events, etc.
7608          *   - The number of LAN queue pairs
7609          *      - Queues being used for RSS.
7610          *              We don't need as many as max_rss_size vectors.
7611          *              use rss_size instead in the calculation since that
7612          *              is governed by number of cpus in the system.
7613          *      - assumes symmetric Tx/Rx pairing
7614          *   - The number of VMDq pairs
7615          *   - The CPU count within the NUMA node if iWARP is enabled
7616 #ifdef I40E_FCOE
7617          *   - The number of FCOE qps.
7618 #endif
7619          * Once we count this up, try the request.
7620          *
7621          * If we can't get what we want, we'll simplify to nearly nothing
7622          * and try again.  If that still fails, we punt.
7623          */
7624         vectors_left = hw->func_caps.num_msix_vectors;
7625         v_budget = 0;
7626
7627         /* reserve one vector for miscellaneous handler */
7628         if (vectors_left) {
7629                 v_budget++;
7630                 vectors_left--;
7631         }
7632
7633         /* reserve vectors for the main PF traffic queues */
7634         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7635         vectors_left -= pf->num_lan_msix;
7636         v_budget += pf->num_lan_msix;
7637
7638         /* reserve one vector for sideband flow director */
7639         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7640                 if (vectors_left) {
7641                         pf->num_fdsb_msix = 1;
7642                         v_budget++;
7643                         vectors_left--;
7644                 } else {
7645                         pf->num_fdsb_msix = 0;
7646                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7647                 }
7648         }
7649
7650 #ifdef I40E_FCOE
7651         /* can we reserve enough for FCoE? */
7652         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7653                 if (!vectors_left)
7654                         pf->num_fcoe_msix = 0;
7655                 else if (vectors_left >= pf->num_fcoe_qps)
7656                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7657                 else
7658                         pf->num_fcoe_msix = 1;
7659                 v_budget += pf->num_fcoe_msix;
7660                 vectors_left -= pf->num_fcoe_msix;
7661         }
7662
7663 #endif
7664         /* can we reserve enough for iWARP? */
7665         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7666                 if (!vectors_left)
7667                         pf->num_iwarp_msix = 0;
7668                 else if (vectors_left < pf->num_iwarp_msix)
7669                         pf->num_iwarp_msix = 1;
7670                 v_budget += pf->num_iwarp_msix;
7671                 vectors_left -= pf->num_iwarp_msix;
7672         }
7673
7674         /* any vectors left over go for VMDq support */
7675         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7676                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7677                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7678
7679                 /* if we're short on vectors for what's desired, we limit
7680                  * the queues per vmdq.  If this is still more than are
7681                  * available, the user will need to change the number of
7682                  * queues/vectors used by the PF later with the ethtool
7683                  * channels command
7684                  */
7685                 if (vmdq_vecs < vmdq_vecs_wanted)
7686                         pf->num_vmdq_qps = 1;
7687                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7688
7689                 v_budget += vmdq_vecs;
7690                 vectors_left -= vmdq_vecs;
7691         }
7692
7693         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7694                                    GFP_KERNEL);
7695         if (!pf->msix_entries)
7696                 return -ENOMEM;
7697
7698         for (i = 0; i < v_budget; i++)
7699                 pf->msix_entries[i].entry = i;
7700         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7701
7702         if (v_actual != v_budget) {
7703                 /* If we have limited resources, we will start with no vectors
7704                  * for the special features and then allocate vectors to some
7705                  * of these features based on the policy and at the end disable
7706                  * the features that did not get any vectors.
7707                  */
7708                 iwarp_requested = pf->num_iwarp_msix;
7709                 pf->num_iwarp_msix = 0;
7710 #ifdef I40E_FCOE
7711                 pf->num_fcoe_qps = 0;
7712                 pf->num_fcoe_msix = 0;
7713 #endif
7714                 pf->num_vmdq_msix = 0;
7715         }
7716
7717         if (v_actual < I40E_MIN_MSIX) {
7718                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7719                 kfree(pf->msix_entries);
7720                 pf->msix_entries = NULL;
7721                 return -ENODEV;
7722
7723         } else if (v_actual == I40E_MIN_MSIX) {
7724                 /* Adjust for minimal MSIX use */
7725                 pf->num_vmdq_vsis = 0;
7726                 pf->num_vmdq_qps = 0;
7727                 pf->num_lan_qps = 1;
7728                 pf->num_lan_msix = 1;
7729
7730         } else if (v_actual != v_budget) {
7731                 int vec;
7732
7733                 /* reserve the misc vector */
7734                 vec = v_actual - 1;
7735
7736                 /* Scale vector usage down */
7737                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7738                 pf->num_vmdq_vsis = 1;
7739                 pf->num_vmdq_qps = 1;
7740                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7741
7742                 /* partition out the remaining vectors */
7743                 switch (vec) {
7744                 case 2:
7745                         pf->num_lan_msix = 1;
7746                         break;
7747                 case 3:
7748                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7749                                 pf->num_lan_msix = 1;
7750                                 pf->num_iwarp_msix = 1;
7751                         } else {
7752                                 pf->num_lan_msix = 2;
7753                         }
7754 #ifdef I40E_FCOE
7755                         /* give one vector to FCoE */
7756                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7757                                 pf->num_lan_msix = 1;
7758                                 pf->num_fcoe_msix = 1;
7759                         }
7760 #endif
7761                         break;
7762                 default:
7763                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7764                                 pf->num_iwarp_msix = min_t(int, (vec / 3),
7765                                                  iwarp_requested);
7766                                 pf->num_vmdq_vsis = min_t(int, (vec / 3),
7767                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7768                         } else {
7769                                 pf->num_vmdq_vsis = min_t(int, (vec / 2),
7770                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7771                         }
7772                         pf->num_lan_msix = min_t(int,
7773                                (vec - (pf->num_iwarp_msix + pf->num_vmdq_vsis)),
7774                                                               pf->num_lan_msix);
7775 #ifdef I40E_FCOE
7776                         /* give one vector to FCoE */
7777                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7778                                 pf->num_fcoe_msix = 1;
7779                                 vec--;
7780                         }
7781 #endif
7782                         break;
7783                 }
7784         }
7785
7786         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7787             (pf->num_vmdq_msix == 0)) {
7788                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7789                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7790         }
7791
7792         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
7793             (pf->num_iwarp_msix == 0)) {
7794                 dev_info(&pf->pdev->dev, "IWARP disabled, not enough MSI-X vectors\n");
7795                 pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
7796         }
7797 #ifdef I40E_FCOE
7798
7799         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7800                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7801                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7802         }
7803 #endif
7804         return v_actual;
7805 }
7806
7807 /**
7808  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7809  * @vsi: the VSI being configured
7810  * @v_idx: index of the vector in the vsi struct
7811  * @cpu: cpu to be used on affinity_mask
7812  *
7813  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7814  **/
7815 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx, int cpu)
7816 {
7817         struct i40e_q_vector *q_vector;
7818
7819         /* allocate q_vector */
7820         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7821         if (!q_vector)
7822                 return -ENOMEM;
7823
7824         q_vector->vsi = vsi;
7825         q_vector->v_idx = v_idx;
7826         cpumask_set_cpu(cpu, &q_vector->affinity_mask);
7827
7828         if (vsi->netdev)
7829                 netif_napi_add(vsi->netdev, &q_vector->napi,
7830                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7831
7832         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7833         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7834
7835         /* tie q_vector and vsi together */
7836         vsi->q_vectors[v_idx] = q_vector;
7837
7838         return 0;
7839 }
7840
7841 /**
7842  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7843  * @vsi: the VSI being configured
7844  *
7845  * We allocate one q_vector per queue interrupt.  If allocation fails we
7846  * return -ENOMEM.
7847  **/
7848 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7849 {
7850         struct i40e_pf *pf = vsi->back;
7851         int err, v_idx, num_q_vectors, current_cpu;
7852
7853         /* if not MSIX, give the one vector only to the LAN VSI */
7854         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7855                 num_q_vectors = vsi->num_q_vectors;
7856         else if (vsi == pf->vsi[pf->lan_vsi])
7857                 num_q_vectors = 1;
7858         else
7859                 return -EINVAL;
7860
7861         current_cpu = cpumask_first(cpu_online_mask);
7862
7863         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7864                 err = i40e_vsi_alloc_q_vector(vsi, v_idx, current_cpu);
7865                 if (err)
7866                         goto err_out;
7867                 current_cpu = cpumask_next(current_cpu, cpu_online_mask);
7868                 if (unlikely(current_cpu >= nr_cpu_ids))
7869                         current_cpu = cpumask_first(cpu_online_mask);
7870         }
7871
7872         return 0;
7873
7874 err_out:
7875         while (v_idx--)
7876                 i40e_free_q_vector(vsi, v_idx);
7877
7878         return err;
7879 }
7880
7881 /**
7882  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7883  * @pf: board private structure to initialize
7884  **/
7885 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7886 {
7887         int vectors = 0;
7888         ssize_t size;
7889
7890         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7891                 vectors = i40e_init_msix(pf);
7892                 if (vectors < 0) {
7893                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7894                                        I40E_FLAG_IWARP_ENABLED  |
7895 #ifdef I40E_FCOE
7896                                        I40E_FLAG_FCOE_ENABLED   |
7897 #endif
7898                                        I40E_FLAG_RSS_ENABLED    |
7899                                        I40E_FLAG_DCB_CAPABLE    |
7900                                        I40E_FLAG_SRIOV_ENABLED  |
7901                                        I40E_FLAG_FD_SB_ENABLED  |
7902                                        I40E_FLAG_FD_ATR_ENABLED |
7903                                        I40E_FLAG_VMDQ_ENABLED);
7904
7905                         /* rework the queue expectations without MSIX */
7906                         i40e_determine_queue_usage(pf);
7907                 }
7908         }
7909
7910         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7911             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7912                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7913                 vectors = pci_enable_msi(pf->pdev);
7914                 if (vectors < 0) {
7915                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7916                                  vectors);
7917                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7918                 }
7919                 vectors = 1;  /* one MSI or Legacy vector */
7920         }
7921
7922         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7923                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7924
7925         /* set up vector assignment tracking */
7926         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7927         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7928         if (!pf->irq_pile) {
7929                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7930                 return -ENOMEM;
7931         }
7932         pf->irq_pile->num_entries = vectors;
7933         pf->irq_pile->search_hint = 0;
7934
7935         /* track first vector for misc interrupts, ignore return */
7936         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7937
7938         return 0;
7939 }
7940
7941 /**
7942  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7943  * @pf: board private structure
7944  *
7945  * This sets up the handler for MSIX 0, which is used to manage the
7946  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7947  * when in MSI or Legacy interrupt mode.
7948  **/
7949 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7950 {
7951         struct i40e_hw *hw = &pf->hw;
7952         int err = 0;
7953
7954         /* Only request the irq if this is the first time through, and
7955          * not when we're rebuilding after a Reset
7956          */
7957         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7958                 err = request_irq(pf->msix_entries[0].vector,
7959                                   i40e_intr, 0, pf->int_name, pf);
7960                 if (err) {
7961                         dev_info(&pf->pdev->dev,
7962                                  "request_irq for %s failed: %d\n",
7963                                  pf->int_name, err);
7964                         return -EFAULT;
7965                 }
7966         }
7967
7968         i40e_enable_misc_int_causes(pf);
7969
7970         /* associate no queues to the misc vector */
7971         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7972         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7973
7974         i40e_flush(hw);
7975
7976         i40e_irq_dynamic_enable_icr0(pf, true);
7977
7978         return err;
7979 }
7980
7981 /**
7982  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7983  * @vsi: vsi structure
7984  * @seed: RSS hash seed
7985  **/
7986 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
7987                               u8 *lut, u16 lut_size)
7988 {
7989         struct i40e_aqc_get_set_rss_key_data rss_key;
7990         struct i40e_pf *pf = vsi->back;
7991         struct i40e_hw *hw = &pf->hw;
7992         bool pf_lut = false;
7993         u8 *rss_lut;
7994         int ret, i;
7995
7996         memcpy(&rss_key, seed, sizeof(rss_key));
7997
7998         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7999         if (!rss_lut)
8000                 return -ENOMEM;
8001
8002         /* Populate the LUT with max no. of queues in round robin fashion */
8003         for (i = 0; i < vsi->rss_table_size; i++)
8004                 rss_lut[i] = i % vsi->rss_size;
8005
8006         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
8007         if (ret) {
8008                 dev_info(&pf->pdev->dev,
8009                          "Cannot set RSS key, err %s aq_err %s\n",
8010                          i40e_stat_str(&pf->hw, ret),
8011                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
8012                 goto config_rss_aq_out;
8013         }
8014
8015         if (vsi->type == I40E_VSI_MAIN)
8016                 pf_lut = true;
8017
8018         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
8019                                   vsi->rss_table_size);
8020         if (ret)
8021                 dev_info(&pf->pdev->dev,
8022                          "Cannot set RSS lut, err %s aq_err %s\n",
8023                          i40e_stat_str(&pf->hw, ret),
8024                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
8025
8026 config_rss_aq_out:
8027         kfree(rss_lut);
8028         return ret;
8029 }
8030
8031 /**
8032  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
8033  * @vsi: VSI structure
8034  **/
8035 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
8036 {
8037         u8 seed[I40E_HKEY_ARRAY_SIZE];
8038         struct i40e_pf *pf = vsi->back;
8039         u8 *lut;
8040         int ret;
8041
8042         if (!(pf->flags & I40E_FLAG_RSS_AQ_CAPABLE))
8043                 return 0;
8044
8045         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8046         if (!lut)
8047                 return -ENOMEM;
8048
8049         i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8050         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8051         vsi->rss_size = min_t(int, pf->alloc_rss_size, vsi->num_queue_pairs);
8052         ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
8053         kfree(lut);
8054
8055         return ret;
8056 }
8057
8058 /**
8059  * i40e_get_rss_aq - Get RSS keys and lut by using AQ commands
8060  * @vsi: Pointer to vsi structure
8061  * @seed: Buffter to store the hash keys
8062  * @lut: Buffer to store the lookup table entries
8063  * @lut_size: Size of buffer to store the lookup table entries
8064  *
8065  * Return 0 on success, negative on failure
8066  */
8067 static int i40e_get_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
8068                            u8 *lut, u16 lut_size)
8069 {
8070         struct i40e_pf *pf = vsi->back;
8071         struct i40e_hw *hw = &pf->hw;
8072         int ret = 0;
8073
8074         if (seed) {
8075                 ret = i40e_aq_get_rss_key(hw, vsi->id,
8076                         (struct i40e_aqc_get_set_rss_key_data *)seed);
8077                 if (ret) {
8078                         dev_info(&pf->pdev->dev,
8079                                  "Cannot get RSS key, err %s aq_err %s\n",
8080                                  i40e_stat_str(&pf->hw, ret),
8081                                  i40e_aq_str(&pf->hw,
8082                                              pf->hw.aq.asq_last_status));
8083                         return ret;
8084                 }
8085         }
8086
8087         if (lut) {
8088                 bool pf_lut = vsi->type == I40E_VSI_MAIN ? true : false;
8089
8090                 ret = i40e_aq_get_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
8091                 if (ret) {
8092                         dev_info(&pf->pdev->dev,
8093                                  "Cannot get RSS lut, err %s aq_err %s\n",
8094                                  i40e_stat_str(&pf->hw, ret),
8095                                  i40e_aq_str(&pf->hw,
8096                                              pf->hw.aq.asq_last_status));
8097                         return ret;
8098                 }
8099         }
8100
8101         return ret;
8102 }
8103
8104 /**
8105  * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
8106  * @vsi: Pointer to vsi structure
8107  * @seed: RSS hash seed
8108  * @lut: Lookup table
8109  * @lut_size: Lookup table size
8110  *
8111  * Returns 0 on success, negative on failure
8112  **/
8113 static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
8114                                const u8 *lut, u16 lut_size)
8115 {
8116         struct i40e_pf *pf = vsi->back;
8117         struct i40e_hw *hw = &pf->hw;
8118         u16 vf_id = vsi->vf_id;
8119         u8 i;
8120
8121         /* Fill out hash function seed */
8122         if (seed) {
8123                 u32 *seed_dw = (u32 *)seed;
8124
8125                 if (vsi->type == I40E_VSI_MAIN) {
8126                         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8127                                 i40e_write_rx_ctl(hw, I40E_PFQF_HKEY(i),
8128                                                   seed_dw[i]);
8129                 } else if (vsi->type == I40E_VSI_SRIOV) {
8130                         for (i = 0; i <= I40E_VFQF_HKEY1_MAX_INDEX; i++)
8131                                 i40e_write_rx_ctl(hw,
8132                                                   I40E_VFQF_HKEY1(i, vf_id),
8133                                                   seed_dw[i]);
8134                 } else {
8135                         dev_err(&pf->pdev->dev, "Cannot set RSS seed - invalid VSI type\n");
8136                 }
8137         }
8138
8139         if (lut) {
8140                 u32 *lut_dw = (u32 *)lut;
8141
8142                 if (vsi->type == I40E_VSI_MAIN) {
8143                         if (lut_size != I40E_HLUT_ARRAY_SIZE)
8144                                 return -EINVAL;
8145                         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8146                                 wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
8147                 } else if (vsi->type == I40E_VSI_SRIOV) {
8148                         if (lut_size != I40E_VF_HLUT_ARRAY_SIZE)
8149                                 return -EINVAL;
8150                         for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
8151                                 i40e_write_rx_ctl(hw,
8152                                                   I40E_VFQF_HLUT1(i, vf_id),
8153                                                   lut_dw[i]);
8154                 } else {
8155                         dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
8156                 }
8157         }
8158         i40e_flush(hw);
8159
8160         return 0;
8161 }
8162
8163 /**
8164  * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
8165  * @vsi: Pointer to VSI structure
8166  * @seed: Buffer to store the keys
8167  * @lut: Buffer to store the lookup table entries
8168  * @lut_size: Size of buffer to store the lookup table entries
8169  *
8170  * Returns 0 on success, negative on failure
8171  */
8172 static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
8173                             u8 *lut, u16 lut_size)
8174 {
8175         struct i40e_pf *pf = vsi->back;
8176         struct i40e_hw *hw = &pf->hw;
8177         u16 i;
8178
8179         if (seed) {
8180                 u32 *seed_dw = (u32 *)seed;
8181
8182                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8183                         seed_dw[i] = i40e_read_rx_ctl(hw, I40E_PFQF_HKEY(i));
8184         }
8185         if (lut) {
8186                 u32 *lut_dw = (u32 *)lut;
8187
8188                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
8189                         return -EINVAL;
8190                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8191                         lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
8192         }
8193
8194         return 0;
8195 }
8196
8197 /**
8198  * i40e_config_rss - Configure RSS keys and lut
8199  * @vsi: Pointer to VSI structure
8200  * @seed: RSS hash seed
8201  * @lut: Lookup table
8202  * @lut_size: Lookup table size
8203  *
8204  * Returns 0 on success, negative on failure
8205  */
8206 int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8207 {
8208         struct i40e_pf *pf = vsi->back;
8209
8210         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8211                 return i40e_config_rss_aq(vsi, seed, lut, lut_size);
8212         else
8213                 return i40e_config_rss_reg(vsi, seed, lut, lut_size);
8214 }
8215
8216 /**
8217  * i40e_get_rss - Get RSS keys and lut
8218  * @vsi: Pointer to VSI structure
8219  * @seed: Buffer to store the keys
8220  * @lut: Buffer to store the lookup table entries
8221  * lut_size: Size of buffer to store the lookup table entries
8222  *
8223  * Returns 0 on success, negative on failure
8224  */
8225 int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8226 {
8227         struct i40e_pf *pf = vsi->back;
8228
8229         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8230                 return i40e_get_rss_aq(vsi, seed, lut, lut_size);
8231         else
8232                 return i40e_get_rss_reg(vsi, seed, lut, lut_size);
8233 }
8234
8235 /**
8236  * i40e_fill_rss_lut - Fill the RSS lookup table with default values
8237  * @pf: Pointer to board private structure
8238  * @lut: Lookup table
8239  * @rss_table_size: Lookup table size
8240  * @rss_size: Range of queue number for hashing
8241  */
8242 static void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
8243                               u16 rss_table_size, u16 rss_size)
8244 {
8245         u16 i;
8246
8247         for (i = 0; i < rss_table_size; i++)
8248                 lut[i] = i % rss_size;
8249 }
8250
8251 /**
8252  * i40e_pf_config_rss - Prepare for RSS if used
8253  * @pf: board private structure
8254  **/
8255 static int i40e_pf_config_rss(struct i40e_pf *pf)
8256 {
8257         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8258         u8 seed[I40E_HKEY_ARRAY_SIZE];
8259         u8 *lut;
8260         struct i40e_hw *hw = &pf->hw;
8261         u32 reg_val;
8262         u64 hena;
8263         int ret;
8264
8265         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
8266         hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
8267                 ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
8268         hena |= i40e_pf_get_default_rss_hena(pf);
8269
8270         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
8271         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
8272
8273         /* Determine the RSS table size based on the hardware capabilities */
8274         reg_val = i40e_read_rx_ctl(hw, I40E_PFQF_CTL_0);
8275         reg_val = (pf->rss_table_size == 512) ?
8276                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
8277                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
8278         i40e_write_rx_ctl(hw, I40E_PFQF_CTL_0, reg_val);
8279
8280         /* Determine the RSS size of the VSI */
8281         if (!vsi->rss_size)
8282                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8283                                       vsi->num_queue_pairs);
8284
8285         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8286         if (!lut)
8287                 return -ENOMEM;
8288
8289         /* Use user configured lut if there is one, otherwise use default */
8290         if (vsi->rss_lut_user)
8291                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8292         else
8293                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8294
8295         /* Use user configured hash key if there is one, otherwise
8296          * use default.
8297          */
8298         if (vsi->rss_hkey_user)
8299                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8300         else
8301                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8302         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
8303         kfree(lut);
8304
8305         return ret;
8306 }
8307
8308 /**
8309  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
8310  * @pf: board private structure
8311  * @queue_count: the requested queue count for rss.
8312  *
8313  * returns 0 if rss is not enabled, if enabled returns the final rss queue
8314  * count which may be different from the requested queue count.
8315  **/
8316 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
8317 {
8318         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8319         int new_rss_size;
8320
8321         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
8322                 return 0;
8323
8324         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
8325
8326         if (queue_count != vsi->num_queue_pairs) {
8327                 vsi->req_queue_pairs = queue_count;
8328                 i40e_prep_for_reset(pf);
8329
8330                 pf->alloc_rss_size = new_rss_size;
8331
8332                 i40e_reset_and_rebuild(pf, true);
8333
8334                 /* Discard the user configured hash keys and lut, if less
8335                  * queues are enabled.
8336                  */
8337                 if (queue_count < vsi->rss_size) {
8338                         i40e_clear_rss_config_user(vsi);
8339                         dev_dbg(&pf->pdev->dev,
8340                                 "discard user configured hash keys and lut\n");
8341                 }
8342
8343                 /* Reset vsi->rss_size, as number of enabled queues changed */
8344                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8345                                       vsi->num_queue_pairs);
8346
8347                 i40e_pf_config_rss(pf);
8348         }
8349         dev_info(&pf->pdev->dev, "RSS count/HW max RSS count:  %d/%d\n",
8350                  pf->alloc_rss_size, pf->rss_size_max);
8351         return pf->alloc_rss_size;
8352 }
8353
8354 /**
8355  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
8356  * @pf: board private structure
8357  **/
8358 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
8359 {
8360         i40e_status status;
8361         bool min_valid, max_valid;
8362         u32 max_bw, min_bw;
8363
8364         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
8365                                            &min_valid, &max_valid);
8366
8367         if (!status) {
8368                 if (min_valid)
8369                         pf->npar_min_bw = min_bw;
8370                 if (max_valid)
8371                         pf->npar_max_bw = max_bw;
8372         }
8373
8374         return status;
8375 }
8376
8377 /**
8378  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
8379  * @pf: board private structure
8380  **/
8381 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
8382 {
8383         struct i40e_aqc_configure_partition_bw_data bw_data;
8384         i40e_status status;
8385
8386         /* Set the valid bit for this PF */
8387         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
8388         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
8389         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
8390
8391         /* Set the new bandwidths */
8392         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
8393
8394         return status;
8395 }
8396
8397 /**
8398  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
8399  * @pf: board private structure
8400  **/
8401 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
8402 {
8403         /* Commit temporary BW setting to permanent NVM image */
8404         enum i40e_admin_queue_err last_aq_status;
8405         i40e_status ret;
8406         u16 nvm_word;
8407
8408         if (pf->hw.partition_id != 1) {
8409                 dev_info(&pf->pdev->dev,
8410                          "Commit BW only works on partition 1! This is partition %d",
8411                          pf->hw.partition_id);
8412                 ret = I40E_NOT_SUPPORTED;
8413                 goto bw_commit_out;
8414         }
8415
8416         /* Acquire NVM for read access */
8417         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
8418         last_aq_status = pf->hw.aq.asq_last_status;
8419         if (ret) {
8420                 dev_info(&pf->pdev->dev,
8421                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
8422                          i40e_stat_str(&pf->hw, ret),
8423                          i40e_aq_str(&pf->hw, last_aq_status));
8424                 goto bw_commit_out;
8425         }
8426
8427         /* Read word 0x10 of NVM - SW compatibility word 1 */
8428         ret = i40e_aq_read_nvm(&pf->hw,
8429                                I40E_SR_NVM_CONTROL_WORD,
8430                                0x10, sizeof(nvm_word), &nvm_word,
8431                                false, NULL);
8432         /* Save off last admin queue command status before releasing
8433          * the NVM
8434          */
8435         last_aq_status = pf->hw.aq.asq_last_status;
8436         i40e_release_nvm(&pf->hw);
8437         if (ret) {
8438                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
8439                          i40e_stat_str(&pf->hw, ret),
8440                          i40e_aq_str(&pf->hw, last_aq_status));
8441                 goto bw_commit_out;
8442         }
8443
8444         /* Wait a bit for NVM release to complete */
8445         msleep(50);
8446
8447         /* Acquire NVM for write access */
8448         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
8449         last_aq_status = pf->hw.aq.asq_last_status;
8450         if (ret) {
8451                 dev_info(&pf->pdev->dev,
8452                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
8453                          i40e_stat_str(&pf->hw, ret),
8454                          i40e_aq_str(&pf->hw, last_aq_status));
8455                 goto bw_commit_out;
8456         }
8457         /* Write it back out unchanged to initiate update NVM,
8458          * which will force a write of the shadow (alt) RAM to
8459          * the NVM - thus storing the bandwidth values permanently.
8460          */
8461         ret = i40e_aq_update_nvm(&pf->hw,
8462                                  I40E_SR_NVM_CONTROL_WORD,
8463                                  0x10, sizeof(nvm_word),
8464                                  &nvm_word, true, NULL);
8465         /* Save off last admin queue command status before releasing
8466          * the NVM
8467          */
8468         last_aq_status = pf->hw.aq.asq_last_status;
8469         i40e_release_nvm(&pf->hw);
8470         if (ret)
8471                 dev_info(&pf->pdev->dev,
8472                          "BW settings NOT SAVED, err %s aq_err %s\n",
8473                          i40e_stat_str(&pf->hw, ret),
8474                          i40e_aq_str(&pf->hw, last_aq_status));
8475 bw_commit_out:
8476
8477         return ret;
8478 }
8479
8480 /**
8481  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
8482  * @pf: board private structure to initialize
8483  *
8484  * i40e_sw_init initializes the Adapter private data structure.
8485  * Fields are initialized based on PCI device information and
8486  * OS network device settings (MTU size).
8487  **/
8488 static int i40e_sw_init(struct i40e_pf *pf)
8489 {
8490         int err = 0;
8491         int size;
8492
8493         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
8494                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
8495         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
8496                 if (I40E_DEBUG_USER & debug)
8497                         pf->hw.debug_mask = debug;
8498                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
8499                                                 I40E_DEFAULT_MSG_ENABLE);
8500         }
8501
8502         /* Set default capability flags */
8503         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
8504                     I40E_FLAG_MSI_ENABLED     |
8505                     I40E_FLAG_MSIX_ENABLED;
8506
8507         /* Set default ITR */
8508         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
8509         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
8510
8511         /* Depending on PF configurations, it is possible that the RSS
8512          * maximum might end up larger than the available queues
8513          */
8514         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
8515         pf->alloc_rss_size = 1;
8516         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
8517         pf->rss_size_max = min_t(int, pf->rss_size_max,
8518                                  pf->hw.func_caps.num_tx_qp);
8519         if (pf->hw.func_caps.rss) {
8520                 pf->flags |= I40E_FLAG_RSS_ENABLED;
8521                 pf->alloc_rss_size = min_t(int, pf->rss_size_max,
8522                                            num_online_cpus());
8523         }
8524
8525         /* MFP mode enabled */
8526         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
8527                 pf->flags |= I40E_FLAG_MFP_ENABLED;
8528                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
8529                 if (i40e_get_npar_bw_setting(pf))
8530                         dev_warn(&pf->pdev->dev,
8531                                  "Could not get NPAR bw settings\n");
8532                 else
8533                         dev_info(&pf->pdev->dev,
8534                                  "Min BW = %8.8x, Max BW = %8.8x\n",
8535                                  pf->npar_min_bw, pf->npar_max_bw);
8536         }
8537
8538         /* FW/NVM is not yet fixed in this regard */
8539         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
8540             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
8541                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8542                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
8543                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
8544                     pf->hw.num_partitions > 1)
8545                         dev_info(&pf->pdev->dev,
8546                                  "Flow Director Sideband mode Disabled in MFP mode\n");
8547                 else
8548                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8549                 pf->fdir_pf_filter_count =
8550                                  pf->hw.func_caps.fd_filters_guaranteed;
8551                 pf->hw.fdir_shared_filter_count =
8552                                  pf->hw.func_caps.fd_filters_best_effort;
8553         }
8554
8555         if (i40e_is_mac_710(&pf->hw) &&
8556             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
8557             (pf->hw.aq.fw_maj_ver < 4))) {
8558                 pf->flags |= I40E_FLAG_RESTART_AUTONEG;
8559                 /* No DCB support  for FW < v4.33 */
8560                 pf->flags |= I40E_FLAG_NO_DCB_SUPPORT;
8561         }
8562
8563         /* Disable FW LLDP if FW < v4.3 */
8564         if (i40e_is_mac_710(&pf->hw) &&
8565             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
8566             (pf->hw.aq.fw_maj_ver < 4)))
8567                 pf->flags |= I40E_FLAG_STOP_FW_LLDP;
8568
8569         /* Use the FW Set LLDP MIB API if FW > v4.40 */
8570         if (i40e_is_mac_710(&pf->hw) &&
8571             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver >= 40)) ||
8572             (pf->hw.aq.fw_maj_ver >= 5)))
8573                 pf->flags |= I40E_FLAG_USE_SET_LLDP_MIB;
8574
8575         if (pf->hw.func_caps.vmdq) {
8576                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
8577                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
8578                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
8579         }
8580
8581         if (pf->hw.func_caps.iwarp) {
8582                 pf->flags |= I40E_FLAG_IWARP_ENABLED;
8583                 /* IWARP needs one extra vector for CQP just like MISC.*/
8584                 pf->num_iwarp_msix = (int)num_online_cpus() + 1;
8585         }
8586
8587 #ifdef I40E_FCOE
8588         i40e_init_pf_fcoe(pf);
8589
8590 #endif /* I40E_FCOE */
8591 #ifdef CONFIG_PCI_IOV
8592         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
8593                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
8594                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
8595                 pf->num_req_vfs = min_t(int,
8596                                         pf->hw.func_caps.num_vfs,
8597                                         I40E_MAX_VF_COUNT);
8598         }
8599 #endif /* CONFIG_PCI_IOV */
8600         if (pf->hw.mac.type == I40E_MAC_X722) {
8601                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
8602                              I40E_FLAG_128_QP_RSS_CAPABLE |
8603                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
8604                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
8605                              I40E_FLAG_WB_ON_ITR_CAPABLE |
8606                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE |
8607                              I40E_FLAG_NO_PCI_LINK_CHECK |
8608                              I40E_FLAG_100M_SGMII_CAPABLE |
8609                              I40E_FLAG_USE_SET_LLDP_MIB |
8610                              I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
8611         } else if ((pf->hw.aq.api_maj_ver > 1) ||
8612                    ((pf->hw.aq.api_maj_ver == 1) &&
8613                     (pf->hw.aq.api_min_ver > 4))) {
8614                 /* Supported in FW API version higher than 1.4 */
8615                 pf->flags |= I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
8616                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8617         } else {
8618                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8619         }
8620
8621         pf->eeprom_version = 0xDEAD;
8622         pf->lan_veb = I40E_NO_VEB;
8623         pf->lan_vsi = I40E_NO_VSI;
8624
8625         /* By default FW has this off for performance reasons */
8626         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
8627
8628         /* set up queue assignment tracking */
8629         size = sizeof(struct i40e_lump_tracking)
8630                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8631         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8632         if (!pf->qp_pile) {
8633                 err = -ENOMEM;
8634                 goto sw_init_done;
8635         }
8636         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8637         pf->qp_pile->search_hint = 0;
8638
8639         pf->tx_timeout_recovery_level = 1;
8640
8641         mutex_init(&pf->switch_mutex);
8642
8643         /* If NPAR is enabled nudge the Tx scheduler */
8644         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8645                 i40e_set_npar_bw_setting(pf);
8646
8647 sw_init_done:
8648         return err;
8649 }
8650
8651 /**
8652  * i40e_set_ntuple - set the ntuple feature flag and take action
8653  * @pf: board private structure to initialize
8654  * @features: the feature set that the stack is suggesting
8655  *
8656  * returns a bool to indicate if reset needs to happen
8657  **/
8658 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8659 {
8660         bool need_reset = false;
8661
8662         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8663          * the state changed, we need to reset.
8664          */
8665         if (features & NETIF_F_NTUPLE) {
8666                 /* Enable filters and mark for reset */
8667                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8668                         need_reset = true;
8669                 /* enable FD_SB only if there is MSI-X vector */
8670                 if (pf->num_fdsb_msix > 0)
8671                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8672         } else {
8673                 /* turn off filters, mark for reset and clear SW filter list */
8674                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8675                         need_reset = true;
8676                         i40e_fdir_filter_exit(pf);
8677                 }
8678                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8679                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8680                 /* reset fd counters */
8681                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8682                 pf->fdir_pf_active_filters = 0;
8683                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8684                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8685                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8686                 /* if ATR was auto disabled it can be re-enabled. */
8687                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8688                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
8689                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8690         }
8691         return need_reset;
8692 }
8693
8694 /**
8695  * i40e_set_features - set the netdev feature flags
8696  * @netdev: ptr to the netdev being adjusted
8697  * @features: the feature set that the stack is suggesting
8698  **/
8699 static int i40e_set_features(struct net_device *netdev,
8700                              netdev_features_t features)
8701 {
8702         struct i40e_netdev_priv *np = netdev_priv(netdev);
8703         struct i40e_vsi *vsi = np->vsi;
8704         struct i40e_pf *pf = vsi->back;
8705         bool need_reset;
8706
8707         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8708                 i40e_vlan_stripping_enable(vsi);
8709         else
8710                 i40e_vlan_stripping_disable(vsi);
8711
8712         need_reset = i40e_set_ntuple(pf, features);
8713
8714         if (need_reset)
8715                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8716
8717         return 0;
8718 }
8719
8720 /**
8721  * i40e_get_udp_port_idx - Lookup a possibly offloaded for Rx UDP port
8722  * @pf: board private structure
8723  * @port: The UDP port to look up
8724  *
8725  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8726  **/
8727 static u8 i40e_get_udp_port_idx(struct i40e_pf *pf, __be16 port)
8728 {
8729         u8 i;
8730
8731         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8732                 if (pf->udp_ports[i].index == port)
8733                         return i;
8734         }
8735
8736         return i;
8737 }
8738
8739 /**
8740  * i40e_udp_tunnel_add - Get notifications about UDP tunnel ports that come up
8741  * @netdev: This physical port's netdev
8742  * @ti: Tunnel endpoint information
8743  **/
8744 static void i40e_udp_tunnel_add(struct net_device *netdev,
8745                                 struct udp_tunnel_info *ti)
8746 {
8747         struct i40e_netdev_priv *np = netdev_priv(netdev);
8748         struct i40e_vsi *vsi = np->vsi;
8749         struct i40e_pf *pf = vsi->back;
8750         __be16 port = ti->port;
8751         u8 next_idx;
8752         u8 idx;
8753
8754         idx = i40e_get_udp_port_idx(pf, port);
8755
8756         /* Check if port already exists */
8757         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8758                 netdev_info(netdev, "port %d already offloaded\n",
8759                             ntohs(port));
8760                 return;
8761         }
8762
8763         /* Now check if there is space to add the new port */
8764         next_idx = i40e_get_udp_port_idx(pf, 0);
8765
8766         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8767                 netdev_info(netdev, "maximum number of offloaded UDP ports reached, not adding port %d\n",
8768                             ntohs(port));
8769                 return;
8770         }
8771
8772         switch (ti->type) {
8773         case UDP_TUNNEL_TYPE_VXLAN:
8774                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_VXLAN;
8775                 break;
8776         case UDP_TUNNEL_TYPE_GENEVE:
8777                 if (!(pf->flags & I40E_FLAG_GENEVE_OFFLOAD_CAPABLE))
8778                         return;
8779                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_NGE;
8780                 break;
8781         default:
8782                 return;
8783         }
8784
8785         /* New port: add it and mark its index in the bitmap */
8786         pf->udp_ports[next_idx].index = port;
8787         pf->pending_udp_bitmap |= BIT_ULL(next_idx);
8788         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8789 }
8790
8791 /**
8792  * i40e_udp_tunnel_del - Get notifications about UDP tunnel ports that go away
8793  * @netdev: This physical port's netdev
8794  * @ti: Tunnel endpoint information
8795  **/
8796 static void i40e_udp_tunnel_del(struct net_device *netdev,
8797                                 struct udp_tunnel_info *ti)
8798 {
8799         struct i40e_netdev_priv *np = netdev_priv(netdev);
8800         struct i40e_vsi *vsi = np->vsi;
8801         struct i40e_pf *pf = vsi->back;
8802         __be16 port = ti->port;
8803         u8 idx;
8804
8805         idx = i40e_get_udp_port_idx(pf, port);
8806
8807         /* Check if port already exists */
8808         if (idx >= I40E_MAX_PF_UDP_OFFLOAD_PORTS)
8809                 goto not_found;
8810
8811         switch (ti->type) {
8812         case UDP_TUNNEL_TYPE_VXLAN:
8813                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_VXLAN)
8814                         goto not_found;
8815                 break;
8816         case UDP_TUNNEL_TYPE_GENEVE:
8817                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_NGE)
8818                         goto not_found;
8819                 break;
8820         default:
8821                 goto not_found;
8822         }
8823
8824         /* if port exists, set it to 0 (mark for deletion)
8825          * and make it pending
8826          */
8827         pf->udp_ports[idx].index = 0;
8828         pf->pending_udp_bitmap |= BIT_ULL(idx);
8829         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8830
8831         return;
8832 not_found:
8833         netdev_warn(netdev, "UDP port %d was not found, not deleting\n",
8834                     ntohs(port));
8835 }
8836
8837 static int i40e_get_phys_port_id(struct net_device *netdev,
8838                                  struct netdev_phys_item_id *ppid)
8839 {
8840         struct i40e_netdev_priv *np = netdev_priv(netdev);
8841         struct i40e_pf *pf = np->vsi->back;
8842         struct i40e_hw *hw = &pf->hw;
8843
8844         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8845                 return -EOPNOTSUPP;
8846
8847         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8848         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8849
8850         return 0;
8851 }
8852
8853 /**
8854  * i40e_ndo_fdb_add - add an entry to the hardware database
8855  * @ndm: the input from the stack
8856  * @tb: pointer to array of nladdr (unused)
8857  * @dev: the net device pointer
8858  * @addr: the MAC address entry being added
8859  * @flags: instructions from stack about fdb operation
8860  */
8861 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8862                             struct net_device *dev,
8863                             const unsigned char *addr, u16 vid,
8864                             u16 flags)
8865 {
8866         struct i40e_netdev_priv *np = netdev_priv(dev);
8867         struct i40e_pf *pf = np->vsi->back;
8868         int err = 0;
8869
8870         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8871                 return -EOPNOTSUPP;
8872
8873         if (vid) {
8874                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8875                 return -EINVAL;
8876         }
8877
8878         /* Hardware does not support aging addresses so if a
8879          * ndm_state is given only allow permanent addresses
8880          */
8881         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8882                 netdev_info(dev, "FDB only supports static addresses\n");
8883                 return -EINVAL;
8884         }
8885
8886         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8887                 err = dev_uc_add_excl(dev, addr);
8888         else if (is_multicast_ether_addr(addr))
8889                 err = dev_mc_add_excl(dev, addr);
8890         else
8891                 err = -EINVAL;
8892
8893         /* Only return duplicate errors if NLM_F_EXCL is set */
8894         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8895                 err = 0;
8896
8897         return err;
8898 }
8899
8900 /**
8901  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8902  * @dev: the netdev being configured
8903  * @nlh: RTNL message
8904  *
8905  * Inserts a new hardware bridge if not already created and
8906  * enables the bridging mode requested (VEB or VEPA). If the
8907  * hardware bridge has already been inserted and the request
8908  * is to change the mode then that requires a PF reset to
8909  * allow rebuild of the components with required hardware
8910  * bridge mode enabled.
8911  **/
8912 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8913                                    struct nlmsghdr *nlh,
8914                                    u16 flags)
8915 {
8916         struct i40e_netdev_priv *np = netdev_priv(dev);
8917         struct i40e_vsi *vsi = np->vsi;
8918         struct i40e_pf *pf = vsi->back;
8919         struct i40e_veb *veb = NULL;
8920         struct nlattr *attr, *br_spec;
8921         int i, rem;
8922
8923         /* Only for PF VSI for now */
8924         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8925                 return -EOPNOTSUPP;
8926
8927         /* Find the HW bridge for PF VSI */
8928         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8929                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8930                         veb = pf->veb[i];
8931         }
8932
8933         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8934
8935         nla_for_each_nested(attr, br_spec, rem) {
8936                 __u16 mode;
8937
8938                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8939                         continue;
8940
8941                 mode = nla_get_u16(attr);
8942                 if ((mode != BRIDGE_MODE_VEPA) &&
8943                     (mode != BRIDGE_MODE_VEB))
8944                         return -EINVAL;
8945
8946                 /* Insert a new HW bridge */
8947                 if (!veb) {
8948                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8949                                              vsi->tc_config.enabled_tc);
8950                         if (veb) {
8951                                 veb->bridge_mode = mode;
8952                                 i40e_config_bridge_mode(veb);
8953                         } else {
8954                                 /* No Bridge HW offload available */
8955                                 return -ENOENT;
8956                         }
8957                         break;
8958                 } else if (mode != veb->bridge_mode) {
8959                         /* Existing HW bridge but different mode needs reset */
8960                         veb->bridge_mode = mode;
8961                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8962                         if (mode == BRIDGE_MODE_VEB)
8963                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8964                         else
8965                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8966                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8967                         break;
8968                 }
8969         }
8970
8971         return 0;
8972 }
8973
8974 /**
8975  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8976  * @skb: skb buff
8977  * @pid: process id
8978  * @seq: RTNL message seq #
8979  * @dev: the netdev being configured
8980  * @filter_mask: unused
8981  * @nlflags: netlink flags passed in
8982  *
8983  * Return the mode in which the hardware bridge is operating in
8984  * i.e VEB or VEPA.
8985  **/
8986 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8987                                    struct net_device *dev,
8988                                    u32 __always_unused filter_mask,
8989                                    int nlflags)
8990 {
8991         struct i40e_netdev_priv *np = netdev_priv(dev);
8992         struct i40e_vsi *vsi = np->vsi;
8993         struct i40e_pf *pf = vsi->back;
8994         struct i40e_veb *veb = NULL;
8995         int i;
8996
8997         /* Only for PF VSI for now */
8998         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8999                 return -EOPNOTSUPP;
9000
9001         /* Find the HW bridge for the PF VSI */
9002         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9003                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9004                         veb = pf->veb[i];
9005         }
9006
9007         if (!veb)
9008                 return 0;
9009
9010         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
9011                                        nlflags, 0, 0, filter_mask, NULL);
9012 }
9013
9014 /* Hardware supports L4 tunnel length of 128B (=2^7) which includes
9015  * inner mac plus all inner ethertypes.
9016  */
9017 #define I40E_MAX_TUNNEL_HDR_LEN 128
9018 /**
9019  * i40e_features_check - Validate encapsulated packet conforms to limits
9020  * @skb: skb buff
9021  * @dev: This physical port's netdev
9022  * @features: Offload features that the stack believes apply
9023  **/
9024 static netdev_features_t i40e_features_check(struct sk_buff *skb,
9025                                              struct net_device *dev,
9026                                              netdev_features_t features)
9027 {
9028         if (skb->encapsulation &&
9029             ((skb_inner_network_header(skb) - skb_transport_header(skb)) >
9030              I40E_MAX_TUNNEL_HDR_LEN))
9031                 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
9032
9033         return features;
9034 }
9035
9036 static const struct net_device_ops i40e_netdev_ops = {
9037         .ndo_open               = i40e_open,
9038         .ndo_stop               = i40e_close,
9039         .ndo_start_xmit         = i40e_lan_xmit_frame,
9040         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
9041         .ndo_set_rx_mode        = i40e_set_rx_mode,
9042         .ndo_validate_addr      = eth_validate_addr,
9043         .ndo_set_mac_address    = i40e_set_mac,
9044         .ndo_change_mtu         = i40e_change_mtu,
9045         .ndo_do_ioctl           = i40e_ioctl,
9046         .ndo_tx_timeout         = i40e_tx_timeout,
9047         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
9048         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
9049 #ifdef CONFIG_NET_POLL_CONTROLLER
9050         .ndo_poll_controller    = i40e_netpoll,
9051 #endif
9052         .ndo_setup_tc           = __i40e_setup_tc,
9053 #ifdef I40E_FCOE
9054         .ndo_fcoe_enable        = i40e_fcoe_enable,
9055         .ndo_fcoe_disable       = i40e_fcoe_disable,
9056 #endif
9057         .ndo_set_features       = i40e_set_features,
9058         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
9059         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
9060         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
9061         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
9062         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
9063         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
9064         .ndo_set_vf_trust       = i40e_ndo_set_vf_trust,
9065         .ndo_udp_tunnel_add     = i40e_udp_tunnel_add,
9066         .ndo_udp_tunnel_del     = i40e_udp_tunnel_del,
9067         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
9068         .ndo_fdb_add            = i40e_ndo_fdb_add,
9069         .ndo_features_check     = i40e_features_check,
9070         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
9071         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
9072 };
9073
9074 /**
9075  * i40e_config_netdev - Setup the netdev flags
9076  * @vsi: the VSI being configured
9077  *
9078  * Returns 0 on success, negative value on failure
9079  **/
9080 static int i40e_config_netdev(struct i40e_vsi *vsi)
9081 {
9082         struct i40e_pf *pf = vsi->back;
9083         struct i40e_hw *hw = &pf->hw;
9084         struct i40e_netdev_priv *np;
9085         struct net_device *netdev;
9086         u8 mac_addr[ETH_ALEN];
9087         int etherdev_size;
9088
9089         etherdev_size = sizeof(struct i40e_netdev_priv);
9090         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
9091         if (!netdev)
9092                 return -ENOMEM;
9093
9094         vsi->netdev = netdev;
9095         np = netdev_priv(netdev);
9096         np->vsi = vsi;
9097
9098         netdev->hw_enc_features |= NETIF_F_SG                   |
9099                                    NETIF_F_IP_CSUM              |
9100                                    NETIF_F_IPV6_CSUM            |
9101                                    NETIF_F_HIGHDMA              |
9102                                    NETIF_F_SOFT_FEATURES        |
9103                                    NETIF_F_TSO                  |
9104                                    NETIF_F_TSO_ECN              |
9105                                    NETIF_F_TSO6                 |
9106                                    NETIF_F_GSO_GRE              |
9107                                    NETIF_F_GSO_GRE_CSUM         |
9108                                    NETIF_F_GSO_IPXIP4           |
9109                                    NETIF_F_GSO_IPXIP6           |
9110                                    NETIF_F_GSO_UDP_TUNNEL       |
9111                                    NETIF_F_GSO_UDP_TUNNEL_CSUM  |
9112                                    NETIF_F_GSO_PARTIAL          |
9113                                    NETIF_F_SCTP_CRC             |
9114                                    NETIF_F_RXHASH               |
9115                                    NETIF_F_RXCSUM               |
9116                                    0;
9117
9118         if (!(pf->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE))
9119                 netdev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
9120
9121         netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
9122
9123         /* record features VLANs can make use of */
9124         netdev->vlan_features |= netdev->hw_enc_features |
9125                                  NETIF_F_TSO_MANGLEID;
9126
9127         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
9128                 netdev->hw_features |= NETIF_F_NTUPLE;
9129
9130         netdev->hw_features |= netdev->hw_enc_features  |
9131                                NETIF_F_HW_VLAN_CTAG_TX  |
9132                                NETIF_F_HW_VLAN_CTAG_RX;
9133
9134         netdev->features |= netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
9135         netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
9136
9137         if (vsi->type == I40E_VSI_MAIN) {
9138                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
9139                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
9140                 /* The following steps are necessary to prevent reception
9141                  * of tagged packets - some older NVM configurations load a
9142                  * default a MAC-VLAN filter that accepts any tagged packet
9143                  * which must be replaced by a normal filter.
9144                  */
9145                 i40e_rm_default_mac_filter(vsi, mac_addr);
9146                 spin_lock_bh(&vsi->mac_filter_list_lock);
9147                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, true);
9148                 spin_unlock_bh(&vsi->mac_filter_list_lock);
9149         } else {
9150                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
9151                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
9152                          pf->vsi[pf->lan_vsi]->netdev->name);
9153                 random_ether_addr(mac_addr);
9154
9155                 spin_lock_bh(&vsi->mac_filter_list_lock);
9156                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
9157                 spin_unlock_bh(&vsi->mac_filter_list_lock);
9158         }
9159
9160         ether_addr_copy(netdev->dev_addr, mac_addr);
9161         ether_addr_copy(netdev->perm_addr, mac_addr);
9162
9163         netdev->priv_flags |= IFF_UNICAST_FLT;
9164         netdev->priv_flags |= IFF_SUPP_NOFCS;
9165         /* Setup netdev TC information */
9166         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
9167
9168         netdev->netdev_ops = &i40e_netdev_ops;
9169         netdev->watchdog_timeo = 5 * HZ;
9170         i40e_set_ethtool_ops(netdev);
9171 #ifdef I40E_FCOE
9172         i40e_fcoe_config_netdev(netdev, vsi);
9173 #endif
9174
9175         return 0;
9176 }
9177
9178 /**
9179  * i40e_vsi_delete - Delete a VSI from the switch
9180  * @vsi: the VSI being removed
9181  *
9182  * Returns 0 on success, negative value on failure
9183  **/
9184 static void i40e_vsi_delete(struct i40e_vsi *vsi)
9185 {
9186         /* remove default VSI is not allowed */
9187         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
9188                 return;
9189
9190         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
9191 }
9192
9193 /**
9194  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
9195  * @vsi: the VSI being queried
9196  *
9197  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
9198  **/
9199 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
9200 {
9201         struct i40e_veb *veb;
9202         struct i40e_pf *pf = vsi->back;
9203
9204         /* Uplink is not a bridge so default to VEB */
9205         if (vsi->veb_idx == I40E_NO_VEB)
9206                 return 1;
9207
9208         veb = pf->veb[vsi->veb_idx];
9209         if (!veb) {
9210                 dev_info(&pf->pdev->dev,
9211                          "There is no veb associated with the bridge\n");
9212                 return -ENOENT;
9213         }
9214
9215         /* Uplink is a bridge in VEPA mode */
9216         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
9217                 return 0;
9218         } else {
9219                 /* Uplink is a bridge in VEB mode */
9220                 return 1;
9221         }
9222
9223         /* VEPA is now default bridge, so return 0 */
9224         return 0;
9225 }
9226
9227 /**
9228  * i40e_add_vsi - Add a VSI to the switch
9229  * @vsi: the VSI being configured
9230  *
9231  * This initializes a VSI context depending on the VSI type to be added and
9232  * passes it down to the add_vsi aq command.
9233  **/
9234 static int i40e_add_vsi(struct i40e_vsi *vsi)
9235 {
9236         int ret = -ENODEV;
9237         i40e_status aq_ret = 0;
9238         struct i40e_pf *pf = vsi->back;
9239         struct i40e_hw *hw = &pf->hw;
9240         struct i40e_vsi_context ctxt;
9241         struct i40e_mac_filter *f, *ftmp;
9242
9243         u8 enabled_tc = 0x1; /* TC0 enabled */
9244         int f_count = 0;
9245
9246         memset(&ctxt, 0, sizeof(ctxt));
9247         switch (vsi->type) {
9248         case I40E_VSI_MAIN:
9249                 /* The PF's main VSI is already setup as part of the
9250                  * device initialization, so we'll not bother with
9251                  * the add_vsi call, but we will retrieve the current
9252                  * VSI context.
9253                  */
9254                 ctxt.seid = pf->main_vsi_seid;
9255                 ctxt.pf_num = pf->hw.pf_id;
9256                 ctxt.vf_num = 0;
9257                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
9258                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9259                 if (ret) {
9260                         dev_info(&pf->pdev->dev,
9261                                  "couldn't get PF vsi config, err %s aq_err %s\n",
9262                                  i40e_stat_str(&pf->hw, ret),
9263                                  i40e_aq_str(&pf->hw,
9264                                              pf->hw.aq.asq_last_status));
9265                         return -ENOENT;
9266                 }
9267                 vsi->info = ctxt.info;
9268                 vsi->info.valid_sections = 0;
9269
9270                 vsi->seid = ctxt.seid;
9271                 vsi->id = ctxt.vsi_number;
9272
9273                 enabled_tc = i40e_pf_get_tc_map(pf);
9274
9275                 /* MFP mode setup queue map and update VSI */
9276                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
9277                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
9278                         memset(&ctxt, 0, sizeof(ctxt));
9279                         ctxt.seid = pf->main_vsi_seid;
9280                         ctxt.pf_num = pf->hw.pf_id;
9281                         ctxt.vf_num = 0;
9282                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
9283                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
9284                         if (ret) {
9285                                 dev_info(&pf->pdev->dev,
9286                                          "update vsi failed, err %s aq_err %s\n",
9287                                          i40e_stat_str(&pf->hw, ret),
9288                                          i40e_aq_str(&pf->hw,
9289                                                     pf->hw.aq.asq_last_status));
9290                                 ret = -ENOENT;
9291                                 goto err;
9292                         }
9293                         /* update the local VSI info queue map */
9294                         i40e_vsi_update_queue_map(vsi, &ctxt);
9295                         vsi->info.valid_sections = 0;
9296                 } else {
9297                         /* Default/Main VSI is only enabled for TC0
9298                          * reconfigure it to enable all TCs that are
9299                          * available on the port in SFP mode.
9300                          * For MFP case the iSCSI PF would use this
9301                          * flow to enable LAN+iSCSI TC.
9302                          */
9303                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
9304                         if (ret) {
9305                                 dev_info(&pf->pdev->dev,
9306                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
9307                                          enabled_tc,
9308                                          i40e_stat_str(&pf->hw, ret),
9309                                          i40e_aq_str(&pf->hw,
9310                                                     pf->hw.aq.asq_last_status));
9311                                 ret = -ENOENT;
9312                         }
9313                 }
9314                 break;
9315
9316         case I40E_VSI_FDIR:
9317                 ctxt.pf_num = hw->pf_id;
9318                 ctxt.vf_num = 0;
9319                 ctxt.uplink_seid = vsi->uplink_seid;
9320                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9321                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9322                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
9323                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
9324                         ctxt.info.valid_sections |=
9325                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9326                         ctxt.info.switch_id =
9327                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9328                 }
9329                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9330                 break;
9331
9332         case I40E_VSI_VMDQ2:
9333                 ctxt.pf_num = hw->pf_id;
9334                 ctxt.vf_num = 0;
9335                 ctxt.uplink_seid = vsi->uplink_seid;
9336                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9337                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
9338
9339                 /* This VSI is connected to VEB so the switch_id
9340                  * should be set to zero by default.
9341                  */
9342                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9343                         ctxt.info.valid_sections |=
9344                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9345                         ctxt.info.switch_id =
9346                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9347                 }
9348
9349                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9350                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9351                 break;
9352
9353         case I40E_VSI_SRIOV:
9354                 ctxt.pf_num = hw->pf_id;
9355                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
9356                 ctxt.uplink_seid = vsi->uplink_seid;
9357                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9358                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
9359
9360                 /* This VSI is connected to VEB so the switch_id
9361                  * should be set to zero by default.
9362                  */
9363                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9364                         ctxt.info.valid_sections |=
9365                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9366                         ctxt.info.switch_id =
9367                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9368                 }
9369
9370                 if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
9371                         ctxt.info.valid_sections |=
9372                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
9373                         ctxt.info.queueing_opt_flags |=
9374                                 (I40E_AQ_VSI_QUE_OPT_TCP_ENA |
9375                                  I40E_AQ_VSI_QUE_OPT_RSS_LUT_VSI);
9376                 }
9377
9378                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
9379                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
9380                 if (pf->vf[vsi->vf_id].spoofchk) {
9381                         ctxt.info.valid_sections |=
9382                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
9383                         ctxt.info.sec_flags |=
9384                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
9385                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
9386                 }
9387                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9388                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9389                 break;
9390
9391 #ifdef I40E_FCOE
9392         case I40E_VSI_FCOE:
9393                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
9394                 if (ret) {
9395                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
9396                         return ret;
9397                 }
9398                 break;
9399
9400 #endif /* I40E_FCOE */
9401         case I40E_VSI_IWARP:
9402                 /* send down message to iWARP */
9403                 break;
9404
9405         default:
9406                 return -ENODEV;
9407         }
9408
9409         if (vsi->type != I40E_VSI_MAIN) {
9410                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
9411                 if (ret) {
9412                         dev_info(&vsi->back->pdev->dev,
9413                                  "add vsi failed, err %s aq_err %s\n",
9414                                  i40e_stat_str(&pf->hw, ret),
9415                                  i40e_aq_str(&pf->hw,
9416                                              pf->hw.aq.asq_last_status));
9417                         ret = -ENOENT;
9418                         goto err;
9419                 }
9420                 vsi->info = ctxt.info;
9421                 vsi->info.valid_sections = 0;
9422                 vsi->seid = ctxt.seid;
9423                 vsi->id = ctxt.vsi_number;
9424         }
9425         /* Except FDIR VSI, for all othet VSI set the broadcast filter */
9426         if (vsi->type != I40E_VSI_FDIR) {
9427                 aq_ret = i40e_aq_set_vsi_broadcast(hw, vsi->seid, true, NULL);
9428                 if (aq_ret) {
9429                         ret = i40e_aq_rc_to_posix(aq_ret,
9430                                                   hw->aq.asq_last_status);
9431                         dev_info(&pf->pdev->dev,
9432                                  "set brdcast promisc failed, err %s, aq_err %s\n",
9433                                  i40e_stat_str(hw, aq_ret),
9434                                  i40e_aq_str(hw, hw->aq.asq_last_status));
9435                 }
9436         }
9437
9438         vsi->active_filters = 0;
9439         clear_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
9440         spin_lock_bh(&vsi->mac_filter_list_lock);
9441         /* If macvlan filters already exist, force them to get loaded */
9442         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
9443                 f->state = I40E_FILTER_NEW;
9444                 f_count++;
9445         }
9446         spin_unlock_bh(&vsi->mac_filter_list_lock);
9447
9448         if (f_count) {
9449                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
9450                 pf->flags |= I40E_FLAG_FILTER_SYNC;
9451         }
9452
9453         /* Update VSI BW information */
9454         ret = i40e_vsi_get_bw_info(vsi);
9455         if (ret) {
9456                 dev_info(&pf->pdev->dev,
9457                          "couldn't get vsi bw info, err %s aq_err %s\n",
9458                          i40e_stat_str(&pf->hw, ret),
9459                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9460                 /* VSI is already added so not tearing that up */
9461                 ret = 0;
9462         }
9463
9464 err:
9465         return ret;
9466 }
9467
9468 /**
9469  * i40e_vsi_release - Delete a VSI and free its resources
9470  * @vsi: the VSI being removed
9471  *
9472  * Returns 0 on success or < 0 on error
9473  **/
9474 int i40e_vsi_release(struct i40e_vsi *vsi)
9475 {
9476         struct i40e_mac_filter *f, *ftmp;
9477         struct i40e_veb *veb = NULL;
9478         struct i40e_pf *pf;
9479         u16 uplink_seid;
9480         int i, n;
9481
9482         pf = vsi->back;
9483
9484         /* release of a VEB-owner or last VSI is not allowed */
9485         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
9486                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
9487                          vsi->seid, vsi->uplink_seid);
9488                 return -ENODEV;
9489         }
9490         if (vsi == pf->vsi[pf->lan_vsi] &&
9491             !test_bit(__I40E_DOWN, &pf->state)) {
9492                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
9493                 return -ENODEV;
9494         }
9495
9496         uplink_seid = vsi->uplink_seid;
9497         if (vsi->type != I40E_VSI_SRIOV) {
9498                 if (vsi->netdev_registered) {
9499                         vsi->netdev_registered = false;
9500                         if (vsi->netdev) {
9501                                 /* results in a call to i40e_close() */
9502                                 unregister_netdev(vsi->netdev);
9503                         }
9504                 } else {
9505                         i40e_vsi_close(vsi);
9506                 }
9507                 i40e_vsi_disable_irq(vsi);
9508         }
9509
9510         spin_lock_bh(&vsi->mac_filter_list_lock);
9511         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
9512                 i40e_del_filter(vsi, f->macaddr, f->vlan,
9513                                 f->is_vf, f->is_netdev);
9514         spin_unlock_bh(&vsi->mac_filter_list_lock);
9515
9516         i40e_sync_vsi_filters(vsi);
9517
9518         i40e_vsi_delete(vsi);
9519         i40e_vsi_free_q_vectors(vsi);
9520         if (vsi->netdev) {
9521                 free_netdev(vsi->netdev);
9522                 vsi->netdev = NULL;
9523         }
9524         i40e_vsi_clear_rings(vsi);
9525         i40e_vsi_clear(vsi);
9526
9527         /* If this was the last thing on the VEB, except for the
9528          * controlling VSI, remove the VEB, which puts the controlling
9529          * VSI onto the next level down in the switch.
9530          *
9531          * Well, okay, there's one more exception here: don't remove
9532          * the orphan VEBs yet.  We'll wait for an explicit remove request
9533          * from up the network stack.
9534          */
9535         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
9536                 if (pf->vsi[i] &&
9537                     pf->vsi[i]->uplink_seid == uplink_seid &&
9538                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9539                         n++;      /* count the VSIs */
9540                 }
9541         }
9542         for (i = 0; i < I40E_MAX_VEB; i++) {
9543                 if (!pf->veb[i])
9544                         continue;
9545                 if (pf->veb[i]->uplink_seid == uplink_seid)
9546                         n++;     /* count the VEBs */
9547                 if (pf->veb[i]->seid == uplink_seid)
9548                         veb = pf->veb[i];
9549         }
9550         if (n == 0 && veb && veb->uplink_seid != 0)
9551                 i40e_veb_release(veb);
9552
9553         return 0;
9554 }
9555
9556 /**
9557  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
9558  * @vsi: ptr to the VSI
9559  *
9560  * This should only be called after i40e_vsi_mem_alloc() which allocates the
9561  * corresponding SW VSI structure and initializes num_queue_pairs for the
9562  * newly allocated VSI.
9563  *
9564  * Returns 0 on success or negative on failure
9565  **/
9566 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
9567 {
9568         int ret = -ENOENT;
9569         struct i40e_pf *pf = vsi->back;
9570
9571         if (vsi->q_vectors[0]) {
9572                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
9573                          vsi->seid);
9574                 return -EEXIST;
9575         }
9576
9577         if (vsi->base_vector) {
9578                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
9579                          vsi->seid, vsi->base_vector);
9580                 return -EEXIST;
9581         }
9582
9583         ret = i40e_vsi_alloc_q_vectors(vsi);
9584         if (ret) {
9585                 dev_info(&pf->pdev->dev,
9586                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
9587                          vsi->num_q_vectors, vsi->seid, ret);
9588                 vsi->num_q_vectors = 0;
9589                 goto vector_setup_out;
9590         }
9591
9592         /* In Legacy mode, we do not have to get any other vector since we
9593          * piggyback on the misc/ICR0 for queue interrupts.
9594         */
9595         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
9596                 return ret;
9597         if (vsi->num_q_vectors)
9598                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
9599                                                  vsi->num_q_vectors, vsi->idx);
9600         if (vsi->base_vector < 0) {
9601                 dev_info(&pf->pdev->dev,
9602                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
9603                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
9604                 i40e_vsi_free_q_vectors(vsi);
9605                 ret = -ENOENT;
9606                 goto vector_setup_out;
9607         }
9608
9609 vector_setup_out:
9610         return ret;
9611 }
9612
9613 /**
9614  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
9615  * @vsi: pointer to the vsi.
9616  *
9617  * This re-allocates a vsi's queue resources.
9618  *
9619  * Returns pointer to the successfully allocated and configured VSI sw struct
9620  * on success, otherwise returns NULL on failure.
9621  **/
9622 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
9623 {
9624         struct i40e_pf *pf;
9625         u8 enabled_tc;
9626         int ret;
9627
9628         if (!vsi)
9629                 return NULL;
9630
9631         pf = vsi->back;
9632
9633         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
9634         i40e_vsi_clear_rings(vsi);
9635
9636         i40e_vsi_free_arrays(vsi, false);
9637         i40e_set_num_rings_in_vsi(vsi);
9638         ret = i40e_vsi_alloc_arrays(vsi, false);
9639         if (ret)
9640                 goto err_vsi;
9641
9642         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
9643         if (ret < 0) {
9644                 dev_info(&pf->pdev->dev,
9645                          "failed to get tracking for %d queues for VSI %d err %d\n",
9646                          vsi->alloc_queue_pairs, vsi->seid, ret);
9647                 goto err_vsi;
9648         }
9649         vsi->base_queue = ret;
9650
9651         /* Update the FW view of the VSI. Force a reset of TC and queue
9652          * layout configurations.
9653          */
9654         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9655         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9656         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9657         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9658         if (vsi->type == I40E_VSI_MAIN)
9659                 i40e_rm_default_mac_filter(vsi, pf->hw.mac.perm_addr);
9660
9661         /* assign it some queues */
9662         ret = i40e_alloc_rings(vsi);
9663         if (ret)
9664                 goto err_rings;
9665
9666         /* map all of the rings to the q_vectors */
9667         i40e_vsi_map_rings_to_vectors(vsi);
9668         return vsi;
9669
9670 err_rings:
9671         i40e_vsi_free_q_vectors(vsi);
9672         if (vsi->netdev_registered) {
9673                 vsi->netdev_registered = false;
9674                 unregister_netdev(vsi->netdev);
9675                 free_netdev(vsi->netdev);
9676                 vsi->netdev = NULL;
9677         }
9678         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9679 err_vsi:
9680         i40e_vsi_clear(vsi);
9681         return NULL;
9682 }
9683
9684 /**
9685  * i40e_vsi_setup - Set up a VSI by a given type
9686  * @pf: board private structure
9687  * @type: VSI type
9688  * @uplink_seid: the switch element to link to
9689  * @param1: usage depends upon VSI type. For VF types, indicates VF id
9690  *
9691  * This allocates the sw VSI structure and its queue resources, then add a VSI
9692  * to the identified VEB.
9693  *
9694  * Returns pointer to the successfully allocated and configure VSI sw struct on
9695  * success, otherwise returns NULL on failure.
9696  **/
9697 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9698                                 u16 uplink_seid, u32 param1)
9699 {
9700         struct i40e_vsi *vsi = NULL;
9701         struct i40e_veb *veb = NULL;
9702         int ret, i;
9703         int v_idx;
9704
9705         /* The requested uplink_seid must be either
9706          *     - the PF's port seid
9707          *              no VEB is needed because this is the PF
9708          *              or this is a Flow Director special case VSI
9709          *     - seid of an existing VEB
9710          *     - seid of a VSI that owns an existing VEB
9711          *     - seid of a VSI that doesn't own a VEB
9712          *              a new VEB is created and the VSI becomes the owner
9713          *     - seid of the PF VSI, which is what creates the first VEB
9714          *              this is a special case of the previous
9715          *
9716          * Find which uplink_seid we were given and create a new VEB if needed
9717          */
9718         for (i = 0; i < I40E_MAX_VEB; i++) {
9719                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9720                         veb = pf->veb[i];
9721                         break;
9722                 }
9723         }
9724
9725         if (!veb && uplink_seid != pf->mac_seid) {
9726
9727                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9728                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9729                                 vsi = pf->vsi[i];
9730                                 break;
9731                         }
9732                 }
9733                 if (!vsi) {
9734                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9735                                  uplink_seid);
9736                         return NULL;
9737                 }
9738
9739                 if (vsi->uplink_seid == pf->mac_seid)
9740                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9741                                              vsi->tc_config.enabled_tc);
9742                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9743                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9744                                              vsi->tc_config.enabled_tc);
9745                 if (veb) {
9746                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9747                                 dev_info(&vsi->back->pdev->dev,
9748                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9749                                 return NULL;
9750                         }
9751                         /* We come up by default in VEPA mode if SRIOV is not
9752                          * already enabled, in which case we can't force VEPA
9753                          * mode.
9754                          */
9755                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9756                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9757                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9758                         }
9759                         i40e_config_bridge_mode(veb);
9760                 }
9761                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9762                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9763                                 veb = pf->veb[i];
9764                 }
9765                 if (!veb) {
9766                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9767                         return NULL;
9768                 }
9769
9770                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9771                 uplink_seid = veb->seid;
9772         }
9773
9774         /* get vsi sw struct */
9775         v_idx = i40e_vsi_mem_alloc(pf, type);
9776         if (v_idx < 0)
9777                 goto err_alloc;
9778         vsi = pf->vsi[v_idx];
9779         if (!vsi)
9780                 goto err_alloc;
9781         vsi->type = type;
9782         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9783
9784         if (type == I40E_VSI_MAIN)
9785                 pf->lan_vsi = v_idx;
9786         else if (type == I40E_VSI_SRIOV)
9787                 vsi->vf_id = param1;
9788         /* assign it some queues */
9789         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9790                                 vsi->idx);
9791         if (ret < 0) {
9792                 dev_info(&pf->pdev->dev,
9793                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9794                          vsi->alloc_queue_pairs, vsi->seid, ret);
9795                 goto err_vsi;
9796         }
9797         vsi->base_queue = ret;
9798
9799         /* get a VSI from the hardware */
9800         vsi->uplink_seid = uplink_seid;
9801         ret = i40e_add_vsi(vsi);
9802         if (ret)
9803                 goto err_vsi;
9804
9805         switch (vsi->type) {
9806         /* setup the netdev if needed */
9807         case I40E_VSI_MAIN:
9808                 /* Apply relevant filters if a platform-specific mac
9809                  * address was selected.
9810                  */
9811                 if (!!(pf->flags & I40E_FLAG_PF_MAC)) {
9812                         ret = i40e_macaddr_init(vsi, pf->hw.mac.addr);
9813                         if (ret) {
9814                                 dev_warn(&pf->pdev->dev,
9815                                          "could not set up macaddr; err %d\n",
9816                                          ret);
9817                         }
9818                 }
9819         case I40E_VSI_VMDQ2:
9820         case I40E_VSI_FCOE:
9821                 ret = i40e_config_netdev(vsi);
9822                 if (ret)
9823                         goto err_netdev;
9824                 ret = register_netdev(vsi->netdev);
9825                 if (ret)
9826                         goto err_netdev;
9827                 vsi->netdev_registered = true;
9828                 netif_carrier_off(vsi->netdev);
9829 #ifdef CONFIG_I40E_DCB
9830                 /* Setup DCB netlink interface */
9831                 i40e_dcbnl_setup(vsi);
9832 #endif /* CONFIG_I40E_DCB */
9833                 /* fall through */
9834
9835         case I40E_VSI_FDIR:
9836                 /* set up vectors and rings if needed */
9837                 ret = i40e_vsi_setup_vectors(vsi);
9838                 if (ret)
9839                         goto err_msix;
9840
9841                 ret = i40e_alloc_rings(vsi);
9842                 if (ret)
9843                         goto err_rings;
9844
9845                 /* map all of the rings to the q_vectors */
9846                 i40e_vsi_map_rings_to_vectors(vsi);
9847
9848                 i40e_vsi_reset_stats(vsi);
9849                 break;
9850
9851         default:
9852                 /* no netdev or rings for the other VSI types */
9853                 break;
9854         }
9855
9856         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9857             (vsi->type == I40E_VSI_VMDQ2)) {
9858                 ret = i40e_vsi_config_rss(vsi);
9859         }
9860         return vsi;
9861
9862 err_rings:
9863         i40e_vsi_free_q_vectors(vsi);
9864 err_msix:
9865         if (vsi->netdev_registered) {
9866                 vsi->netdev_registered = false;
9867                 unregister_netdev(vsi->netdev);
9868                 free_netdev(vsi->netdev);
9869                 vsi->netdev = NULL;
9870         }
9871 err_netdev:
9872         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9873 err_vsi:
9874         i40e_vsi_clear(vsi);
9875 err_alloc:
9876         return NULL;
9877 }
9878
9879 /**
9880  * i40e_veb_get_bw_info - Query VEB BW information
9881  * @veb: the veb to query
9882  *
9883  * Query the Tx scheduler BW configuration data for given VEB
9884  **/
9885 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9886 {
9887         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9888         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9889         struct i40e_pf *pf = veb->pf;
9890         struct i40e_hw *hw = &pf->hw;
9891         u32 tc_bw_max;
9892         int ret = 0;
9893         int i;
9894
9895         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9896                                                   &bw_data, NULL);
9897         if (ret) {
9898                 dev_info(&pf->pdev->dev,
9899                          "query veb bw config failed, err %s aq_err %s\n",
9900                          i40e_stat_str(&pf->hw, ret),
9901                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9902                 goto out;
9903         }
9904
9905         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9906                                                    &ets_data, NULL);
9907         if (ret) {
9908                 dev_info(&pf->pdev->dev,
9909                          "query veb bw ets config failed, err %s aq_err %s\n",
9910                          i40e_stat_str(&pf->hw, ret),
9911                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9912                 goto out;
9913         }
9914
9915         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9916         veb->bw_max_quanta = ets_data.tc_bw_max;
9917         veb->is_abs_credits = bw_data.absolute_credits_enable;
9918         veb->enabled_tc = ets_data.tc_valid_bits;
9919         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9920                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9921         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9922                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9923                 veb->bw_tc_limit_credits[i] =
9924                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9925                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9926         }
9927
9928 out:
9929         return ret;
9930 }
9931
9932 /**
9933  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9934  * @pf: board private structure
9935  *
9936  * On error: returns error code (negative)
9937  * On success: returns vsi index in PF (positive)
9938  **/
9939 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9940 {
9941         int ret = -ENOENT;
9942         struct i40e_veb *veb;
9943         int i;
9944
9945         /* Need to protect the allocation of switch elements at the PF level */
9946         mutex_lock(&pf->switch_mutex);
9947
9948         /* VEB list may be fragmented if VEB creation/destruction has
9949          * been happening.  We can afford to do a quick scan to look
9950          * for any free slots in the list.
9951          *
9952          * find next empty veb slot, looping back around if necessary
9953          */
9954         i = 0;
9955         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9956                 i++;
9957         if (i >= I40E_MAX_VEB) {
9958                 ret = -ENOMEM;
9959                 goto err_alloc_veb;  /* out of VEB slots! */
9960         }
9961
9962         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9963         if (!veb) {
9964                 ret = -ENOMEM;
9965                 goto err_alloc_veb;
9966         }
9967         veb->pf = pf;
9968         veb->idx = i;
9969         veb->enabled_tc = 1;
9970
9971         pf->veb[i] = veb;
9972         ret = i;
9973 err_alloc_veb:
9974         mutex_unlock(&pf->switch_mutex);
9975         return ret;
9976 }
9977
9978 /**
9979  * i40e_switch_branch_release - Delete a branch of the switch tree
9980  * @branch: where to start deleting
9981  *
9982  * This uses recursion to find the tips of the branch to be
9983  * removed, deleting until we get back to and can delete this VEB.
9984  **/
9985 static void i40e_switch_branch_release(struct i40e_veb *branch)
9986 {
9987         struct i40e_pf *pf = branch->pf;
9988         u16 branch_seid = branch->seid;
9989         u16 veb_idx = branch->idx;
9990         int i;
9991
9992         /* release any VEBs on this VEB - RECURSION */
9993         for (i = 0; i < I40E_MAX_VEB; i++) {
9994                 if (!pf->veb[i])
9995                         continue;
9996                 if (pf->veb[i]->uplink_seid == branch->seid)
9997                         i40e_switch_branch_release(pf->veb[i]);
9998         }
9999
10000         /* Release the VSIs on this VEB, but not the owner VSI.
10001          *
10002          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
10003          *       the VEB itself, so don't use (*branch) after this loop.
10004          */
10005         for (i = 0; i < pf->num_alloc_vsi; i++) {
10006                 if (!pf->vsi[i])
10007                         continue;
10008                 if (pf->vsi[i]->uplink_seid == branch_seid &&
10009                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
10010                         i40e_vsi_release(pf->vsi[i]);
10011                 }
10012         }
10013
10014         /* There's one corner case where the VEB might not have been
10015          * removed, so double check it here and remove it if needed.
10016          * This case happens if the veb was created from the debugfs
10017          * commands and no VSIs were added to it.
10018          */
10019         if (pf->veb[veb_idx])
10020                 i40e_veb_release(pf->veb[veb_idx]);
10021 }
10022
10023 /**
10024  * i40e_veb_clear - remove veb struct
10025  * @veb: the veb to remove
10026  **/
10027 static void i40e_veb_clear(struct i40e_veb *veb)
10028 {
10029         if (!veb)
10030                 return;
10031
10032         if (veb->pf) {
10033                 struct i40e_pf *pf = veb->pf;
10034
10035                 mutex_lock(&pf->switch_mutex);
10036                 if (pf->veb[veb->idx] == veb)
10037                         pf->veb[veb->idx] = NULL;
10038                 mutex_unlock(&pf->switch_mutex);
10039         }
10040
10041         kfree(veb);
10042 }
10043
10044 /**
10045  * i40e_veb_release - Delete a VEB and free its resources
10046  * @veb: the VEB being removed
10047  **/
10048 void i40e_veb_release(struct i40e_veb *veb)
10049 {
10050         struct i40e_vsi *vsi = NULL;
10051         struct i40e_pf *pf;
10052         int i, n = 0;
10053
10054         pf = veb->pf;
10055
10056         /* find the remaining VSI and check for extras */
10057         for (i = 0; i < pf->num_alloc_vsi; i++) {
10058                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
10059                         n++;
10060                         vsi = pf->vsi[i];
10061                 }
10062         }
10063         if (n != 1) {
10064                 dev_info(&pf->pdev->dev,
10065                          "can't remove VEB %d with %d VSIs left\n",
10066                          veb->seid, n);
10067                 return;
10068         }
10069
10070         /* move the remaining VSI to uplink veb */
10071         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
10072         if (veb->uplink_seid) {
10073                 vsi->uplink_seid = veb->uplink_seid;
10074                 if (veb->uplink_seid == pf->mac_seid)
10075                         vsi->veb_idx = I40E_NO_VEB;
10076                 else
10077                         vsi->veb_idx = veb->veb_idx;
10078         } else {
10079                 /* floating VEB */
10080                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
10081                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
10082         }
10083
10084         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10085         i40e_veb_clear(veb);
10086 }
10087
10088 /**
10089  * i40e_add_veb - create the VEB in the switch
10090  * @veb: the VEB to be instantiated
10091  * @vsi: the controlling VSI
10092  **/
10093 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
10094 {
10095         struct i40e_pf *pf = veb->pf;
10096         bool enable_stats = !!(pf->flags & I40E_FLAG_VEB_STATS_ENABLED);
10097         int ret;
10098
10099         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
10100                               veb->enabled_tc, false,
10101                               &veb->seid, enable_stats, NULL);
10102
10103         /* get a VEB from the hardware */
10104         if (ret) {
10105                 dev_info(&pf->pdev->dev,
10106                          "couldn't add VEB, err %s aq_err %s\n",
10107                          i40e_stat_str(&pf->hw, ret),
10108                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10109                 return -EPERM;
10110         }
10111
10112         /* get statistics counter */
10113         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
10114                                          &veb->stats_idx, NULL, NULL, NULL);
10115         if (ret) {
10116                 dev_info(&pf->pdev->dev,
10117                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
10118                          i40e_stat_str(&pf->hw, ret),
10119                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10120                 return -EPERM;
10121         }
10122         ret = i40e_veb_get_bw_info(veb);
10123         if (ret) {
10124                 dev_info(&pf->pdev->dev,
10125                          "couldn't get VEB bw info, err %s aq_err %s\n",
10126                          i40e_stat_str(&pf->hw, ret),
10127                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10128                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10129                 return -ENOENT;
10130         }
10131
10132         vsi->uplink_seid = veb->seid;
10133         vsi->veb_idx = veb->idx;
10134         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
10135
10136         return 0;
10137 }
10138
10139 /**
10140  * i40e_veb_setup - Set up a VEB
10141  * @pf: board private structure
10142  * @flags: VEB setup flags
10143  * @uplink_seid: the switch element to link to
10144  * @vsi_seid: the initial VSI seid
10145  * @enabled_tc: Enabled TC bit-map
10146  *
10147  * This allocates the sw VEB structure and links it into the switch
10148  * It is possible and legal for this to be a duplicate of an already
10149  * existing VEB.  It is also possible for both uplink and vsi seids
10150  * to be zero, in order to create a floating VEB.
10151  *
10152  * Returns pointer to the successfully allocated VEB sw struct on
10153  * success, otherwise returns NULL on failure.
10154  **/
10155 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
10156                                 u16 uplink_seid, u16 vsi_seid,
10157                                 u8 enabled_tc)
10158 {
10159         struct i40e_veb *veb, *uplink_veb = NULL;
10160         int vsi_idx, veb_idx;
10161         int ret;
10162
10163         /* if one seid is 0, the other must be 0 to create a floating relay */
10164         if ((uplink_seid == 0 || vsi_seid == 0) &&
10165             (uplink_seid + vsi_seid != 0)) {
10166                 dev_info(&pf->pdev->dev,
10167                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
10168                          uplink_seid, vsi_seid);
10169                 return NULL;
10170         }
10171
10172         /* make sure there is such a vsi and uplink */
10173         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
10174                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
10175                         break;
10176         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
10177                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
10178                          vsi_seid);
10179                 return NULL;
10180         }
10181
10182         if (uplink_seid && uplink_seid != pf->mac_seid) {
10183                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
10184                         if (pf->veb[veb_idx] &&
10185                             pf->veb[veb_idx]->seid == uplink_seid) {
10186                                 uplink_veb = pf->veb[veb_idx];
10187                                 break;
10188                         }
10189                 }
10190                 if (!uplink_veb) {
10191                         dev_info(&pf->pdev->dev,
10192                                  "uplink seid %d not found\n", uplink_seid);
10193                         return NULL;
10194                 }
10195         }
10196
10197         /* get veb sw struct */
10198         veb_idx = i40e_veb_mem_alloc(pf);
10199         if (veb_idx < 0)
10200                 goto err_alloc;
10201         veb = pf->veb[veb_idx];
10202         veb->flags = flags;
10203         veb->uplink_seid = uplink_seid;
10204         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
10205         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
10206
10207         /* create the VEB in the switch */
10208         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
10209         if (ret)
10210                 goto err_veb;
10211         if (vsi_idx == pf->lan_vsi)
10212                 pf->lan_veb = veb->idx;
10213
10214         return veb;
10215
10216 err_veb:
10217         i40e_veb_clear(veb);
10218 err_alloc:
10219         return NULL;
10220 }
10221
10222 /**
10223  * i40e_setup_pf_switch_element - set PF vars based on switch type
10224  * @pf: board private structure
10225  * @ele: element we are building info from
10226  * @num_reported: total number of elements
10227  * @printconfig: should we print the contents
10228  *
10229  * helper function to assist in extracting a few useful SEID values.
10230  **/
10231 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
10232                                 struct i40e_aqc_switch_config_element_resp *ele,
10233                                 u16 num_reported, bool printconfig)
10234 {
10235         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
10236         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
10237         u8 element_type = ele->element_type;
10238         u16 seid = le16_to_cpu(ele->seid);
10239
10240         if (printconfig)
10241                 dev_info(&pf->pdev->dev,
10242                          "type=%d seid=%d uplink=%d downlink=%d\n",
10243                          element_type, seid, uplink_seid, downlink_seid);
10244
10245         switch (element_type) {
10246         case I40E_SWITCH_ELEMENT_TYPE_MAC:
10247                 pf->mac_seid = seid;
10248                 break;
10249         case I40E_SWITCH_ELEMENT_TYPE_VEB:
10250                 /* Main VEB? */
10251                 if (uplink_seid != pf->mac_seid)
10252                         break;
10253                 if (pf->lan_veb == I40E_NO_VEB) {
10254                         int v;
10255
10256                         /* find existing or else empty VEB */
10257                         for (v = 0; v < I40E_MAX_VEB; v++) {
10258                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
10259                                         pf->lan_veb = v;
10260                                         break;
10261                                 }
10262                         }
10263                         if (pf->lan_veb == I40E_NO_VEB) {
10264                                 v = i40e_veb_mem_alloc(pf);
10265                                 if (v < 0)
10266                                         break;
10267                                 pf->lan_veb = v;
10268                         }
10269                 }
10270
10271                 pf->veb[pf->lan_veb]->seid = seid;
10272                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
10273                 pf->veb[pf->lan_veb]->pf = pf;
10274                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
10275                 break;
10276         case I40E_SWITCH_ELEMENT_TYPE_VSI:
10277                 if (num_reported != 1)
10278                         break;
10279                 /* This is immediately after a reset so we can assume this is
10280                  * the PF's VSI
10281                  */
10282                 pf->mac_seid = uplink_seid;
10283                 pf->pf_seid = downlink_seid;
10284                 pf->main_vsi_seid = seid;
10285                 if (printconfig)
10286                         dev_info(&pf->pdev->dev,
10287                                  "pf_seid=%d main_vsi_seid=%d\n",
10288                                  pf->pf_seid, pf->main_vsi_seid);
10289                 break;
10290         case I40E_SWITCH_ELEMENT_TYPE_PF:
10291         case I40E_SWITCH_ELEMENT_TYPE_VF:
10292         case I40E_SWITCH_ELEMENT_TYPE_EMP:
10293         case I40E_SWITCH_ELEMENT_TYPE_BMC:
10294         case I40E_SWITCH_ELEMENT_TYPE_PE:
10295         case I40E_SWITCH_ELEMENT_TYPE_PA:
10296                 /* ignore these for now */
10297                 break;
10298         default:
10299                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
10300                          element_type, seid);
10301                 break;
10302         }
10303 }
10304
10305 /**
10306  * i40e_fetch_switch_configuration - Get switch config from firmware
10307  * @pf: board private structure
10308  * @printconfig: should we print the contents
10309  *
10310  * Get the current switch configuration from the device and
10311  * extract a few useful SEID values.
10312  **/
10313 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
10314 {
10315         struct i40e_aqc_get_switch_config_resp *sw_config;
10316         u16 next_seid = 0;
10317         int ret = 0;
10318         u8 *aq_buf;
10319         int i;
10320
10321         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
10322         if (!aq_buf)
10323                 return -ENOMEM;
10324
10325         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
10326         do {
10327                 u16 num_reported, num_total;
10328
10329                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
10330                                                 I40E_AQ_LARGE_BUF,
10331                                                 &next_seid, NULL);
10332                 if (ret) {
10333                         dev_info(&pf->pdev->dev,
10334                                  "get switch config failed err %s aq_err %s\n",
10335                                  i40e_stat_str(&pf->hw, ret),
10336                                  i40e_aq_str(&pf->hw,
10337                                              pf->hw.aq.asq_last_status));
10338                         kfree(aq_buf);
10339                         return -ENOENT;
10340                 }
10341
10342                 num_reported = le16_to_cpu(sw_config->header.num_reported);
10343                 num_total = le16_to_cpu(sw_config->header.num_total);
10344
10345                 if (printconfig)
10346                         dev_info(&pf->pdev->dev,
10347                                  "header: %d reported %d total\n",
10348                                  num_reported, num_total);
10349
10350                 for (i = 0; i < num_reported; i++) {
10351                         struct i40e_aqc_switch_config_element_resp *ele =
10352                                 &sw_config->element[i];
10353
10354                         i40e_setup_pf_switch_element(pf, ele, num_reported,
10355                                                      printconfig);
10356                 }
10357         } while (next_seid != 0);
10358
10359         kfree(aq_buf);
10360         return ret;
10361 }
10362
10363 /**
10364  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
10365  * @pf: board private structure
10366  * @reinit: if the Main VSI needs to re-initialized.
10367  *
10368  * Returns 0 on success, negative value on failure
10369  **/
10370 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
10371 {
10372         u16 flags = 0;
10373         int ret;
10374
10375         /* find out what's out there already */
10376         ret = i40e_fetch_switch_configuration(pf, false);
10377         if (ret) {
10378                 dev_info(&pf->pdev->dev,
10379                          "couldn't fetch switch config, err %s aq_err %s\n",
10380                          i40e_stat_str(&pf->hw, ret),
10381                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10382                 return ret;
10383         }
10384         i40e_pf_reset_stats(pf);
10385
10386         /* set the switch config bit for the whole device to
10387          * support limited promisc or true promisc
10388          * when user requests promisc. The default is limited
10389          * promisc.
10390         */
10391
10392         if ((pf->hw.pf_id == 0) &&
10393             !(pf->flags & I40E_FLAG_TRUE_PROMISC_SUPPORT))
10394                 flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
10395
10396         if (pf->hw.pf_id == 0) {
10397                 u16 valid_flags;
10398
10399                 valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
10400                 ret = i40e_aq_set_switch_config(&pf->hw, flags, valid_flags,
10401                                                 NULL);
10402                 if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) {
10403                         dev_info(&pf->pdev->dev,
10404                                  "couldn't set switch config bits, err %s aq_err %s\n",
10405                                  i40e_stat_str(&pf->hw, ret),
10406                                  i40e_aq_str(&pf->hw,
10407                                              pf->hw.aq.asq_last_status));
10408                         /* not a fatal problem, just keep going */
10409                 }
10410         }
10411
10412         /* first time setup */
10413         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
10414                 struct i40e_vsi *vsi = NULL;
10415                 u16 uplink_seid;
10416
10417                 /* Set up the PF VSI associated with the PF's main VSI
10418                  * that is already in the HW switch
10419                  */
10420                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
10421                         uplink_seid = pf->veb[pf->lan_veb]->seid;
10422                 else
10423                         uplink_seid = pf->mac_seid;
10424                 if (pf->lan_vsi == I40E_NO_VSI)
10425                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
10426                 else if (reinit)
10427                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
10428                 if (!vsi) {
10429                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
10430                         i40e_fdir_teardown(pf);
10431                         return -EAGAIN;
10432                 }
10433         } else {
10434                 /* force a reset of TC and queue layout configurations */
10435                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
10436
10437                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
10438                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
10439                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
10440         }
10441         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
10442
10443         i40e_fdir_sb_setup(pf);
10444
10445         /* Setup static PF queue filter control settings */
10446         ret = i40e_setup_pf_filter_control(pf);
10447         if (ret) {
10448                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
10449                          ret);
10450                 /* Failure here should not stop continuing other steps */
10451         }
10452
10453         /* enable RSS in the HW, even for only one queue, as the stack can use
10454          * the hash
10455          */
10456         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
10457                 i40e_pf_config_rss(pf);
10458
10459         /* fill in link information and enable LSE reporting */
10460         i40e_update_link_info(&pf->hw);
10461         i40e_link_event(pf);
10462
10463         /* Initialize user-specific link properties */
10464         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
10465                                   I40E_AQ_AN_COMPLETED) ? true : false);
10466
10467         i40e_ptp_init(pf);
10468
10469         return ret;
10470 }
10471
10472 /**
10473  * i40e_determine_queue_usage - Work out queue distribution
10474  * @pf: board private structure
10475  **/
10476 static void i40e_determine_queue_usage(struct i40e_pf *pf)
10477 {
10478         int queues_left;
10479
10480         pf->num_lan_qps = 0;
10481 #ifdef I40E_FCOE
10482         pf->num_fcoe_qps = 0;
10483 #endif
10484
10485         /* Find the max queues to be put into basic use.  We'll always be
10486          * using TC0, whether or not DCB is running, and TC0 will get the
10487          * big RSS set.
10488          */
10489         queues_left = pf->hw.func_caps.num_tx_qp;
10490
10491         if ((queues_left == 1) ||
10492             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
10493                 /* one qp for PF, no queues for anything else */
10494                 queues_left = 0;
10495                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10496
10497                 /* make sure all the fancies are disabled */
10498                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10499                                I40E_FLAG_IWARP_ENABLED  |
10500 #ifdef I40E_FCOE
10501                                I40E_FLAG_FCOE_ENABLED   |
10502 #endif
10503                                I40E_FLAG_FD_SB_ENABLED  |
10504                                I40E_FLAG_FD_ATR_ENABLED |
10505                                I40E_FLAG_DCB_CAPABLE    |
10506                                I40E_FLAG_SRIOV_ENABLED  |
10507                                I40E_FLAG_VMDQ_ENABLED);
10508         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
10509                                   I40E_FLAG_FD_SB_ENABLED |
10510                                   I40E_FLAG_FD_ATR_ENABLED |
10511                                   I40E_FLAG_DCB_CAPABLE))) {
10512                 /* one qp for PF */
10513                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10514                 queues_left -= pf->num_lan_qps;
10515
10516                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10517                                I40E_FLAG_IWARP_ENABLED  |
10518 #ifdef I40E_FCOE
10519                                I40E_FLAG_FCOE_ENABLED   |
10520 #endif
10521                                I40E_FLAG_FD_SB_ENABLED  |
10522                                I40E_FLAG_FD_ATR_ENABLED |
10523                                I40E_FLAG_DCB_ENABLED    |
10524                                I40E_FLAG_VMDQ_ENABLED);
10525         } else {
10526                 /* Not enough queues for all TCs */
10527                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
10528                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
10529                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10530                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
10531                 }
10532                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
10533                                         num_online_cpus());
10534                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
10535                                         pf->hw.func_caps.num_tx_qp);
10536
10537                 queues_left -= pf->num_lan_qps;
10538         }
10539
10540 #ifdef I40E_FCOE
10541         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
10542                 if (I40E_DEFAULT_FCOE <= queues_left) {
10543                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
10544                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
10545                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
10546                 } else {
10547                         pf->num_fcoe_qps = 0;
10548                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
10549                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
10550                 }
10551
10552                 queues_left -= pf->num_fcoe_qps;
10553         }
10554
10555 #endif
10556         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10557                 if (queues_left > 1) {
10558                         queues_left -= 1; /* save 1 queue for FD */
10559                 } else {
10560                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
10561                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
10562                 }
10563         }
10564
10565         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10566             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
10567                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
10568                                         (queues_left / pf->num_vf_qps));
10569                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
10570         }
10571
10572         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
10573             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
10574                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
10575                                           (queues_left / pf->num_vmdq_qps));
10576                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
10577         }
10578
10579         pf->queues_left = queues_left;
10580         dev_dbg(&pf->pdev->dev,
10581                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
10582                 pf->hw.func_caps.num_tx_qp,
10583                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
10584                 pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
10585                 pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
10586                 queues_left);
10587 #ifdef I40E_FCOE
10588         dev_dbg(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
10589 #endif
10590 }
10591
10592 /**
10593  * i40e_setup_pf_filter_control - Setup PF static filter control
10594  * @pf: PF to be setup
10595  *
10596  * i40e_setup_pf_filter_control sets up a PF's initial filter control
10597  * settings. If PE/FCoE are enabled then it will also set the per PF
10598  * based filter sizes required for them. It also enables Flow director,
10599  * ethertype and macvlan type filter settings for the pf.
10600  *
10601  * Returns 0 on success, negative on failure
10602  **/
10603 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
10604 {
10605         struct i40e_filter_control_settings *settings = &pf->filter_settings;
10606
10607         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
10608
10609         /* Flow Director is enabled */
10610         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
10611                 settings->enable_fdir = true;
10612
10613         /* Ethtype and MACVLAN filters enabled for PF */
10614         settings->enable_ethtype = true;
10615         settings->enable_macvlan = true;
10616
10617         if (i40e_set_filter_control(&pf->hw, settings))
10618                 return -ENOENT;
10619
10620         return 0;
10621 }
10622
10623 #define INFO_STRING_LEN 255
10624 #define REMAIN(__x) (INFO_STRING_LEN - (__x))
10625 static void i40e_print_features(struct i40e_pf *pf)
10626 {
10627         struct i40e_hw *hw = &pf->hw;
10628         char *buf;
10629         int i;
10630
10631         buf = kmalloc(INFO_STRING_LEN, GFP_KERNEL);
10632         if (!buf)
10633                 return;
10634
10635         i = snprintf(buf, INFO_STRING_LEN, "Features: PF-id[%d]", hw->pf_id);
10636 #ifdef CONFIG_PCI_IOV
10637         i += snprintf(&buf[i], REMAIN(i), " VFs: %d", pf->num_req_vfs);
10638 #endif
10639         i += snprintf(&buf[i], REMAIN(i), " VSIs: %d QP: %d",
10640                       pf->hw.func_caps.num_vsis,
10641                       pf->vsi[pf->lan_vsi]->num_queue_pairs);
10642         if (pf->flags & I40E_FLAG_RSS_ENABLED)
10643                 i += snprintf(&buf[i], REMAIN(i), " RSS");
10644         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
10645                 i += snprintf(&buf[i], REMAIN(i), " FD_ATR");
10646         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10647                 i += snprintf(&buf[i], REMAIN(i), " FD_SB");
10648                 i += snprintf(&buf[i], REMAIN(i), " NTUPLE");
10649         }
10650         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
10651                 i += snprintf(&buf[i], REMAIN(i), " DCB");
10652         i += snprintf(&buf[i], REMAIN(i), " VxLAN");
10653         i += snprintf(&buf[i], REMAIN(i), " Geneve");
10654         if (pf->flags & I40E_FLAG_PTP)
10655                 i += snprintf(&buf[i], REMAIN(i), " PTP");
10656 #ifdef I40E_FCOE
10657         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
10658                 i += snprintf(&buf[i], REMAIN(i), " FCOE");
10659 #endif
10660         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
10661                 i += snprintf(&buf[i], REMAIN(i), " VEB");
10662         else
10663                 i += snprintf(&buf[i], REMAIN(i), " VEPA");
10664
10665         dev_info(&pf->pdev->dev, "%s\n", buf);
10666         kfree(buf);
10667         WARN_ON(i > INFO_STRING_LEN);
10668 }
10669
10670 /**
10671  * i40e_get_platform_mac_addr - get platform-specific MAC address
10672  *
10673  * @pdev: PCI device information struct
10674  * @pf: board private structure
10675  *
10676  * Look up the MAC address in Open Firmware  on systems that support it,
10677  * and use IDPROM on SPARC if no OF address is found. On return, the
10678  * I40E_FLAG_PF_MAC will be wset in pf->flags if a platform-specific value
10679  * has been selected.
10680  **/
10681 static void i40e_get_platform_mac_addr(struct pci_dev *pdev, struct i40e_pf *pf)
10682 {
10683         pf->flags &= ~I40E_FLAG_PF_MAC;
10684         if (!eth_platform_get_mac_address(&pdev->dev, pf->hw.mac.addr))
10685                 pf->flags |= I40E_FLAG_PF_MAC;
10686 }
10687
10688 /**
10689  * i40e_probe - Device initialization routine
10690  * @pdev: PCI device information struct
10691  * @ent: entry in i40e_pci_tbl
10692  *
10693  * i40e_probe initializes a PF identified by a pci_dev structure.
10694  * The OS initialization, configuring of the PF private structure,
10695  * and a hardware reset occur.
10696  *
10697  * Returns 0 on success, negative on failure
10698  **/
10699 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
10700 {
10701         struct i40e_aq_get_phy_abilities_resp abilities;
10702         struct i40e_pf *pf;
10703         struct i40e_hw *hw;
10704         static u16 pfs_found;
10705         u16 wol_nvm_bits;
10706         u16 link_status;
10707         int err;
10708         u32 val;
10709         u32 i;
10710         u8 set_fc_aq_fail;
10711
10712         err = pci_enable_device_mem(pdev);
10713         if (err)
10714                 return err;
10715
10716         /* set up for high or low dma */
10717         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10718         if (err) {
10719                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10720                 if (err) {
10721                         dev_err(&pdev->dev,
10722                                 "DMA configuration failed: 0x%x\n", err);
10723                         goto err_dma;
10724                 }
10725         }
10726
10727         /* set up pci connections */
10728         err = pci_request_mem_regions(pdev, i40e_driver_name);
10729         if (err) {
10730                 dev_info(&pdev->dev,
10731                          "pci_request_selected_regions failed %d\n", err);
10732                 goto err_pci_reg;
10733         }
10734
10735         pci_enable_pcie_error_reporting(pdev);
10736         pci_set_master(pdev);
10737
10738         /* Now that we have a PCI connection, we need to do the
10739          * low level device setup.  This is primarily setting up
10740          * the Admin Queue structures and then querying for the
10741          * device's current profile information.
10742          */
10743         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
10744         if (!pf) {
10745                 err = -ENOMEM;
10746                 goto err_pf_alloc;
10747         }
10748         pf->next_vsi = 0;
10749         pf->pdev = pdev;
10750         set_bit(__I40E_DOWN, &pf->state);
10751
10752         hw = &pf->hw;
10753         hw->back = pf;
10754
10755         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
10756                                 I40E_MAX_CSR_SPACE);
10757
10758         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
10759         if (!hw->hw_addr) {
10760                 err = -EIO;
10761                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
10762                          (unsigned int)pci_resource_start(pdev, 0),
10763                          pf->ioremap_len, err);
10764                 goto err_ioremap;
10765         }
10766         hw->vendor_id = pdev->vendor;
10767         hw->device_id = pdev->device;
10768         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10769         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10770         hw->subsystem_device_id = pdev->subsystem_device;
10771         hw->bus.device = PCI_SLOT(pdev->devfn);
10772         hw->bus.func = PCI_FUNC(pdev->devfn);
10773         pf->instance = pfs_found;
10774
10775         /* set up the locks for the AQ, do this only once in probe
10776          * and destroy them only once in remove
10777          */
10778         mutex_init(&hw->aq.asq_mutex);
10779         mutex_init(&hw->aq.arq_mutex);
10780
10781         if (debug != -1) {
10782                 pf->msg_enable = pf->hw.debug_mask;
10783                 pf->msg_enable = debug;
10784         }
10785
10786         /* do a special CORER for clearing PXE mode once at init */
10787         if (hw->revision_id == 0 &&
10788             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10789                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10790                 i40e_flush(hw);
10791                 msleep(200);
10792                 pf->corer_count++;
10793
10794                 i40e_clear_pxe_mode(hw);
10795         }
10796
10797         /* Reset here to make sure all is clean and to define PF 'n' */
10798         i40e_clear_hw(hw);
10799         err = i40e_pf_reset(hw);
10800         if (err) {
10801                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10802                 goto err_pf_reset;
10803         }
10804         pf->pfr_count++;
10805
10806         hw->aq.num_arq_entries = I40E_AQ_LEN;
10807         hw->aq.num_asq_entries = I40E_AQ_LEN;
10808         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10809         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10810         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10811
10812         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10813                  "%s-%s:misc",
10814                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10815
10816         err = i40e_init_shared_code(hw);
10817         if (err) {
10818                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10819                          err);
10820                 goto err_pf_reset;
10821         }
10822
10823         /* set up a default setting for link flow control */
10824         pf->hw.fc.requested_mode = I40E_FC_NONE;
10825
10826         err = i40e_init_adminq(hw);
10827         if (err) {
10828                 if (err == I40E_ERR_FIRMWARE_API_VERSION)
10829                         dev_info(&pdev->dev,
10830                                  "The driver for the device stopped because the NVM image is newer than expected. You must install the most recent version of the network driver.\n");
10831                 else
10832                         dev_info(&pdev->dev,
10833                                  "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");
10834
10835                 goto err_pf_reset;
10836         }
10837
10838         /* provide nvm, fw, api versions */
10839         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
10840                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
10841                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
10842                  i40e_nvm_version_str(hw));
10843
10844         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10845             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10846                 dev_info(&pdev->dev,
10847                          "The driver for the device detected a newer version of the NVM image than expected. Please install the most recent version of the network driver.\n");
10848         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10849                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10850                 dev_info(&pdev->dev,
10851                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10852
10853         i40e_verify_eeprom(pf);
10854
10855         /* Rev 0 hardware was never productized */
10856         if (hw->revision_id < 1)
10857                 dev_warn(&pdev->dev, "This device is a pre-production adapter/LOM. Please be aware there may be issues with your hardware. If you are experiencing problems please contact your Intel or hardware representative who provided you with this hardware.\n");
10858
10859         i40e_clear_pxe_mode(hw);
10860         err = i40e_get_capabilities(pf);
10861         if (err)
10862                 goto err_adminq_setup;
10863
10864         err = i40e_sw_init(pf);
10865         if (err) {
10866                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10867                 goto err_sw_init;
10868         }
10869
10870         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10871                                 hw->func_caps.num_rx_qp,
10872                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10873         if (err) {
10874                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10875                 goto err_init_lan_hmc;
10876         }
10877
10878         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10879         if (err) {
10880                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10881                 err = -ENOENT;
10882                 goto err_configure_lan_hmc;
10883         }
10884
10885         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10886          * Ignore error return codes because if it was already disabled via
10887          * hardware settings this will fail
10888          */
10889         if (pf->flags & I40E_FLAG_STOP_FW_LLDP) {
10890                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10891                 i40e_aq_stop_lldp(hw, true, NULL);
10892         }
10893
10894         i40e_get_mac_addr(hw, hw->mac.addr);
10895         /* allow a platform config to override the HW addr */
10896         i40e_get_platform_mac_addr(pdev, pf);
10897         if (!is_valid_ether_addr(hw->mac.addr)) {
10898                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10899                 err = -EIO;
10900                 goto err_mac_addr;
10901         }
10902         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10903         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10904         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10905         if (is_valid_ether_addr(hw->mac.port_addr))
10906                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10907 #ifdef I40E_FCOE
10908         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10909         if (err)
10910                 dev_info(&pdev->dev,
10911                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10912         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10913                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10914                          hw->mac.san_addr);
10915                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10916         }
10917         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10918 #endif /* I40E_FCOE */
10919
10920         pci_set_drvdata(pdev, pf);
10921         pci_save_state(pdev);
10922 #ifdef CONFIG_I40E_DCB
10923         err = i40e_init_pf_dcb(pf);
10924         if (err) {
10925                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10926                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10927                 /* Continue without DCB enabled */
10928         }
10929 #endif /* CONFIG_I40E_DCB */
10930
10931         /* set up periodic task facility */
10932         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10933         pf->service_timer_period = HZ;
10934
10935         INIT_WORK(&pf->service_task, i40e_service_task);
10936         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10937         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10938
10939         /* NVM bit on means WoL disabled for the port */
10940         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
10941         if (BIT (hw->port) & wol_nvm_bits || hw->partition_id != 1)
10942                 pf->wol_en = false;
10943         else
10944                 pf->wol_en = true;
10945         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10946
10947         /* set up the main switch operations */
10948         i40e_determine_queue_usage(pf);
10949         err = i40e_init_interrupt_scheme(pf);
10950         if (err)
10951                 goto err_switch_setup;
10952
10953         /* The number of VSIs reported by the FW is the minimum guaranteed
10954          * to us; HW supports far more and we share the remaining pool with
10955          * the other PFs. We allocate space for more than the guarantee with
10956          * the understanding that we might not get them all later.
10957          */
10958         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10959                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10960         else
10961                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10962
10963         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10964         pf->vsi = kcalloc(pf->num_alloc_vsi, sizeof(struct i40e_vsi *),
10965                           GFP_KERNEL);
10966         if (!pf->vsi) {
10967                 err = -ENOMEM;
10968                 goto err_switch_setup;
10969         }
10970
10971 #ifdef CONFIG_PCI_IOV
10972         /* prep for VF support */
10973         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10974             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10975             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10976                 if (pci_num_vf(pdev))
10977                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
10978         }
10979 #endif
10980         err = i40e_setup_pf_switch(pf, false);
10981         if (err) {
10982                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
10983                 goto err_vsis;
10984         }
10985
10986         /* Make sure flow control is set according to current settings */
10987         err = i40e_set_fc(hw, &set_fc_aq_fail, true);
10988         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
10989                 dev_dbg(&pf->pdev->dev,
10990                         "Set fc with err %s aq_err %s on get_phy_cap\n",
10991                         i40e_stat_str(hw, err),
10992                         i40e_aq_str(hw, hw->aq.asq_last_status));
10993         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
10994                 dev_dbg(&pf->pdev->dev,
10995                         "Set fc with err %s aq_err %s on set_phy_config\n",
10996                         i40e_stat_str(hw, err),
10997                         i40e_aq_str(hw, hw->aq.asq_last_status));
10998         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
10999                 dev_dbg(&pf->pdev->dev,
11000                         "Set fc with err %s aq_err %s on get_link_info\n",
11001                         i40e_stat_str(hw, err),
11002                         i40e_aq_str(hw, hw->aq.asq_last_status));
11003
11004         /* if FDIR VSI was set up, start it now */
11005         for (i = 0; i < pf->num_alloc_vsi; i++) {
11006                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
11007                         i40e_vsi_open(pf->vsi[i]);
11008                         break;
11009                 }
11010         }
11011
11012         /* The driver only wants link up/down and module qualification
11013          * reports from firmware.  Note the negative logic.
11014          */
11015         err = i40e_aq_set_phy_int_mask(&pf->hw,
11016                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
11017                                          I40E_AQ_EVENT_MEDIA_NA |
11018                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
11019         if (err)
11020                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
11021                          i40e_stat_str(&pf->hw, err),
11022                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11023
11024         /* Reconfigure hardware for allowing smaller MSS in the case
11025          * of TSO, so that we avoid the MDD being fired and causing
11026          * a reset in the case of small MSS+TSO.
11027          */
11028         val = rd32(hw, I40E_REG_MSS);
11029         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
11030                 val &= ~I40E_REG_MSS_MIN_MASK;
11031                 val |= I40E_64BYTE_MSS;
11032                 wr32(hw, I40E_REG_MSS, val);
11033         }
11034
11035         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
11036                 msleep(75);
11037                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
11038                 if (err)
11039                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
11040                                  i40e_stat_str(&pf->hw, err),
11041                                  i40e_aq_str(&pf->hw,
11042                                              pf->hw.aq.asq_last_status));
11043         }
11044         /* The main driver is (mostly) up and happy. We need to set this state
11045          * before setting up the misc vector or we get a race and the vector
11046          * ends up disabled forever.
11047          */
11048         clear_bit(__I40E_DOWN, &pf->state);
11049
11050         /* In case of MSIX we are going to setup the misc vector right here
11051          * to handle admin queue events etc. In case of legacy and MSI
11052          * the misc functionality and queue processing is combined in
11053          * the same vector and that gets setup at open.
11054          */
11055         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
11056                 err = i40e_setup_misc_vector(pf);
11057                 if (err) {
11058                         dev_info(&pdev->dev,
11059                                  "setup of misc vector failed: %d\n", err);
11060                         goto err_vsis;
11061                 }
11062         }
11063
11064 #ifdef CONFIG_PCI_IOV
11065         /* prep for VF support */
11066         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
11067             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
11068             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
11069                 /* disable link interrupts for VFs */
11070                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
11071                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
11072                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
11073                 i40e_flush(hw);
11074
11075                 if (pci_num_vf(pdev)) {
11076                         dev_info(&pdev->dev,
11077                                  "Active VFs found, allocating resources.\n");
11078                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
11079                         if (err)
11080                                 dev_info(&pdev->dev,
11081                                          "Error %d allocating resources for existing VFs\n",
11082                                          err);
11083                 }
11084         }
11085 #endif /* CONFIG_PCI_IOV */
11086
11087         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11088                 pf->iwarp_base_vector = i40e_get_lump(pf, pf->irq_pile,
11089                                                       pf->num_iwarp_msix,
11090                                                       I40E_IWARP_IRQ_PILE_ID);
11091                 if (pf->iwarp_base_vector < 0) {
11092                         dev_info(&pdev->dev,
11093                                  "failed to get tracking for %d vectors for IWARP err=%d\n",
11094                                  pf->num_iwarp_msix, pf->iwarp_base_vector);
11095                         pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
11096                 }
11097         }
11098
11099         i40e_dbg_pf_init(pf);
11100
11101         /* tell the firmware that we're starting */
11102         i40e_send_version(pf);
11103
11104         /* since everything's happy, start the service_task timer */
11105         mod_timer(&pf->service_timer,
11106                   round_jiffies(jiffies + pf->service_timer_period));
11107
11108         /* add this PF to client device list and launch a client service task */
11109         err = i40e_lan_add_device(pf);
11110         if (err)
11111                 dev_info(&pdev->dev, "Failed to add PF to client API service list: %d\n",
11112                          err);
11113
11114 #ifdef I40E_FCOE
11115         /* create FCoE interface */
11116         i40e_fcoe_vsi_setup(pf);
11117
11118 #endif
11119 #define PCI_SPEED_SIZE 8
11120 #define PCI_WIDTH_SIZE 8
11121         /* Devices on the IOSF bus do not have this information
11122          * and will report PCI Gen 1 x 1 by default so don't bother
11123          * checking them.
11124          */
11125         if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
11126                 char speed[PCI_SPEED_SIZE] = "Unknown";
11127                 char width[PCI_WIDTH_SIZE] = "Unknown";
11128
11129                 /* Get the negotiated link width and speed from PCI config
11130                  * space
11131                  */
11132                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
11133                                           &link_status);
11134
11135                 i40e_set_pci_config_data(hw, link_status);
11136
11137                 switch (hw->bus.speed) {
11138                 case i40e_bus_speed_8000:
11139                         strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
11140                 case i40e_bus_speed_5000:
11141                         strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
11142                 case i40e_bus_speed_2500:
11143                         strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
11144                 default:
11145                         break;
11146                 }
11147                 switch (hw->bus.width) {
11148                 case i40e_bus_width_pcie_x8:
11149                         strncpy(width, "8", PCI_WIDTH_SIZE); break;
11150                 case i40e_bus_width_pcie_x4:
11151                         strncpy(width, "4", PCI_WIDTH_SIZE); break;
11152                 case i40e_bus_width_pcie_x2:
11153                         strncpy(width, "2", PCI_WIDTH_SIZE); break;
11154                 case i40e_bus_width_pcie_x1:
11155                         strncpy(width, "1", PCI_WIDTH_SIZE); break;
11156                 default:
11157                         break;
11158                 }
11159
11160                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
11161                          speed, width);
11162
11163                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
11164                     hw->bus.speed < i40e_bus_speed_8000) {
11165                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
11166                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
11167                 }
11168         }
11169
11170         /* get the requested speeds from the fw */
11171         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
11172         if (err)
11173                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
11174                         i40e_stat_str(&pf->hw, err),
11175                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11176         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
11177
11178         /* get the supported phy types from the fw */
11179         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
11180         if (err)
11181                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
11182                         i40e_stat_str(&pf->hw, err),
11183                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11184         pf->hw.phy.phy_types = le32_to_cpu(abilities.phy_type);
11185
11186         /* Add a filter to drop all Flow control frames from any VSI from being
11187          * transmitted. By doing so we stop a malicious VF from sending out
11188          * PAUSE or PFC frames and potentially controlling traffic for other
11189          * PF/VF VSIs.
11190          * The FW can still send Flow control frames if enabled.
11191          */
11192         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
11193                                                        pf->main_vsi_seid);
11194
11195         if ((pf->hw.device_id == I40E_DEV_ID_10G_BASE_T) ||
11196             (pf->hw.device_id == I40E_DEV_ID_10G_BASE_T4))
11197                 pf->flags |= I40E_FLAG_HAVE_10GBASET_PHY;
11198
11199         /* print a string summarizing features */
11200         i40e_print_features(pf);
11201
11202         return 0;
11203
11204         /* Unwind what we've done if something failed in the setup */
11205 err_vsis:
11206         set_bit(__I40E_DOWN, &pf->state);
11207         i40e_clear_interrupt_scheme(pf);
11208         kfree(pf->vsi);
11209 err_switch_setup:
11210         i40e_reset_interrupt_capability(pf);
11211         del_timer_sync(&pf->service_timer);
11212 err_mac_addr:
11213 err_configure_lan_hmc:
11214         (void)i40e_shutdown_lan_hmc(hw);
11215 err_init_lan_hmc:
11216         kfree(pf->qp_pile);
11217 err_sw_init:
11218 err_adminq_setup:
11219 err_pf_reset:
11220         iounmap(hw->hw_addr);
11221 err_ioremap:
11222         kfree(pf);
11223 err_pf_alloc:
11224         pci_disable_pcie_error_reporting(pdev);
11225         pci_release_mem_regions(pdev);
11226 err_pci_reg:
11227 err_dma:
11228         pci_disable_device(pdev);
11229         return err;
11230 }
11231
11232 /**
11233  * i40e_remove - Device removal routine
11234  * @pdev: PCI device information struct
11235  *
11236  * i40e_remove is called by the PCI subsystem to alert the driver
11237  * that is should release a PCI device.  This could be caused by a
11238  * Hot-Plug event, or because the driver is going to be removed from
11239  * memory.
11240  **/
11241 static void i40e_remove(struct pci_dev *pdev)
11242 {
11243         struct i40e_pf *pf = pci_get_drvdata(pdev);
11244         struct i40e_hw *hw = &pf->hw;
11245         i40e_status ret_code;
11246         int i;
11247
11248         i40e_dbg_pf_exit(pf);
11249
11250         i40e_ptp_stop(pf);
11251
11252         /* Disable RSS in hw */
11253         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), 0);
11254         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), 0);
11255
11256         /* no more scheduling of any task */
11257         set_bit(__I40E_SUSPENDED, &pf->state);
11258         set_bit(__I40E_DOWN, &pf->state);
11259         if (pf->service_timer.data)
11260                 del_timer_sync(&pf->service_timer);
11261         if (pf->service_task.func)
11262                 cancel_work_sync(&pf->service_task);
11263
11264         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
11265                 i40e_free_vfs(pf);
11266                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
11267         }
11268
11269         i40e_fdir_teardown(pf);
11270
11271         /* If there is a switch structure or any orphans, remove them.
11272          * This will leave only the PF's VSI remaining.
11273          */
11274         for (i = 0; i < I40E_MAX_VEB; i++) {
11275                 if (!pf->veb[i])
11276                         continue;
11277
11278                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
11279                     pf->veb[i]->uplink_seid == 0)
11280                         i40e_switch_branch_release(pf->veb[i]);
11281         }
11282
11283         /* Now we can shutdown the PF's VSI, just before we kill
11284          * adminq and hmc.
11285          */
11286         if (pf->vsi[pf->lan_vsi])
11287                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
11288
11289         /* remove attached clients */
11290         ret_code = i40e_lan_del_device(pf);
11291         if (ret_code) {
11292                 dev_warn(&pdev->dev, "Failed to delete client device: %d\n",
11293                          ret_code);
11294         }
11295
11296         /* shutdown and destroy the HMC */
11297         if (hw->hmc.hmc_obj) {
11298                 ret_code = i40e_shutdown_lan_hmc(hw);
11299                 if (ret_code)
11300                         dev_warn(&pdev->dev,
11301                                  "Failed to destroy the HMC resources: %d\n",
11302                                  ret_code);
11303         }
11304
11305         /* shutdown the adminq */
11306         ret_code = i40e_shutdown_adminq(hw);
11307         if (ret_code)
11308                 dev_warn(&pdev->dev,
11309                          "Failed to destroy the Admin Queue resources: %d\n",
11310                          ret_code);
11311
11312         /* destroy the locks only once, here */
11313         mutex_destroy(&hw->aq.arq_mutex);
11314         mutex_destroy(&hw->aq.asq_mutex);
11315
11316         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
11317         i40e_clear_interrupt_scheme(pf);
11318         for (i = 0; i < pf->num_alloc_vsi; i++) {
11319                 if (pf->vsi[i]) {
11320                         i40e_vsi_clear_rings(pf->vsi[i]);
11321                         i40e_vsi_clear(pf->vsi[i]);
11322                         pf->vsi[i] = NULL;
11323                 }
11324         }
11325
11326         for (i = 0; i < I40E_MAX_VEB; i++) {
11327                 kfree(pf->veb[i]);
11328                 pf->veb[i] = NULL;
11329         }
11330
11331         kfree(pf->qp_pile);
11332         kfree(pf->vsi);
11333
11334         iounmap(hw->hw_addr);
11335         kfree(pf);
11336         pci_release_mem_regions(pdev);
11337
11338         pci_disable_pcie_error_reporting(pdev);
11339         pci_disable_device(pdev);
11340 }
11341
11342 /**
11343  * i40e_pci_error_detected - warning that something funky happened in PCI land
11344  * @pdev: PCI device information struct
11345  *
11346  * Called to warn that something happened and the error handling steps
11347  * are in progress.  Allows the driver to quiesce things, be ready for
11348  * remediation.
11349  **/
11350 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
11351                                                 enum pci_channel_state error)
11352 {
11353         struct i40e_pf *pf = pci_get_drvdata(pdev);
11354
11355         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
11356
11357         /* shutdown all operations */
11358         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
11359                 rtnl_lock();
11360                 i40e_prep_for_reset(pf);
11361                 rtnl_unlock();
11362         }
11363
11364         /* Request a slot reset */
11365         return PCI_ERS_RESULT_NEED_RESET;
11366 }
11367
11368 /**
11369  * i40e_pci_error_slot_reset - a PCI slot reset just happened
11370  * @pdev: PCI device information struct
11371  *
11372  * Called to find if the driver can work with the device now that
11373  * the pci slot has been reset.  If a basic connection seems good
11374  * (registers are readable and have sane content) then return a
11375  * happy little PCI_ERS_RESULT_xxx.
11376  **/
11377 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
11378 {
11379         struct i40e_pf *pf = pci_get_drvdata(pdev);
11380         pci_ers_result_t result;
11381         int err;
11382         u32 reg;
11383
11384         dev_dbg(&pdev->dev, "%s\n", __func__);
11385         if (pci_enable_device_mem(pdev)) {
11386                 dev_info(&pdev->dev,
11387                          "Cannot re-enable PCI device after reset.\n");
11388                 result = PCI_ERS_RESULT_DISCONNECT;
11389         } else {
11390                 pci_set_master(pdev);
11391                 pci_restore_state(pdev);
11392                 pci_save_state(pdev);
11393                 pci_wake_from_d3(pdev, false);
11394
11395                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
11396                 if (reg == 0)
11397                         result = PCI_ERS_RESULT_RECOVERED;
11398                 else
11399                         result = PCI_ERS_RESULT_DISCONNECT;
11400         }
11401
11402         err = pci_cleanup_aer_uncorrect_error_status(pdev);
11403         if (err) {
11404                 dev_info(&pdev->dev,
11405                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
11406                          err);
11407                 /* non-fatal, continue */
11408         }
11409
11410         return result;
11411 }
11412
11413 /**
11414  * i40e_pci_error_resume - restart operations after PCI error recovery
11415  * @pdev: PCI device information struct
11416  *
11417  * Called to allow the driver to bring things back up after PCI error
11418  * and/or reset recovery has finished.
11419  **/
11420 static void i40e_pci_error_resume(struct pci_dev *pdev)
11421 {
11422         struct i40e_pf *pf = pci_get_drvdata(pdev);
11423
11424         dev_dbg(&pdev->dev, "%s\n", __func__);
11425         if (test_bit(__I40E_SUSPENDED, &pf->state))
11426                 return;
11427
11428         rtnl_lock();
11429         i40e_handle_reset_warning(pf);
11430         rtnl_unlock();
11431 }
11432
11433 /**
11434  * i40e_shutdown - PCI callback for shutting down
11435  * @pdev: PCI device information struct
11436  **/
11437 static void i40e_shutdown(struct pci_dev *pdev)
11438 {
11439         struct i40e_pf *pf = pci_get_drvdata(pdev);
11440         struct i40e_hw *hw = &pf->hw;
11441
11442         set_bit(__I40E_SUSPENDED, &pf->state);
11443         set_bit(__I40E_DOWN, &pf->state);
11444         rtnl_lock();
11445         i40e_prep_for_reset(pf);
11446         rtnl_unlock();
11447
11448         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11449         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11450
11451         del_timer_sync(&pf->service_timer);
11452         cancel_work_sync(&pf->service_task);
11453         i40e_fdir_teardown(pf);
11454
11455         rtnl_lock();
11456         i40e_prep_for_reset(pf);
11457         rtnl_unlock();
11458
11459         wr32(hw, I40E_PFPM_APM,
11460              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11461         wr32(hw, I40E_PFPM_WUFC,
11462              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11463
11464         i40e_clear_interrupt_scheme(pf);
11465
11466         if (system_state == SYSTEM_POWER_OFF) {
11467                 pci_wake_from_d3(pdev, pf->wol_en);
11468                 pci_set_power_state(pdev, PCI_D3hot);
11469         }
11470 }
11471
11472 #ifdef CONFIG_PM
11473 /**
11474  * i40e_suspend - PCI callback for moving to D3
11475  * @pdev: PCI device information struct
11476  **/
11477 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
11478 {
11479         struct i40e_pf *pf = pci_get_drvdata(pdev);
11480         struct i40e_hw *hw = &pf->hw;
11481         int retval = 0;
11482
11483         set_bit(__I40E_SUSPENDED, &pf->state);
11484         set_bit(__I40E_DOWN, &pf->state);
11485
11486         rtnl_lock();
11487         i40e_prep_for_reset(pf);
11488         rtnl_unlock();
11489
11490         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11491         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11492
11493         i40e_stop_misc_vector(pf);
11494
11495         retval = pci_save_state(pdev);
11496         if (retval)
11497                 return retval;
11498
11499         pci_wake_from_d3(pdev, pf->wol_en);
11500         pci_set_power_state(pdev, PCI_D3hot);
11501
11502         return retval;
11503 }
11504
11505 /**
11506  * i40e_resume - PCI callback for waking up from D3
11507  * @pdev: PCI device information struct
11508  **/
11509 static int i40e_resume(struct pci_dev *pdev)
11510 {
11511         struct i40e_pf *pf = pci_get_drvdata(pdev);
11512         u32 err;
11513
11514         pci_set_power_state(pdev, PCI_D0);
11515         pci_restore_state(pdev);
11516         /* pci_restore_state() clears dev->state_saves, so
11517          * call pci_save_state() again to restore it.
11518          */
11519         pci_save_state(pdev);
11520
11521         err = pci_enable_device_mem(pdev);
11522         if (err) {
11523                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
11524                 return err;
11525         }
11526         pci_set_master(pdev);
11527
11528         /* no wakeup events while running */
11529         pci_wake_from_d3(pdev, false);
11530
11531         /* handling the reset will rebuild the device state */
11532         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
11533                 clear_bit(__I40E_DOWN, &pf->state);
11534                 rtnl_lock();
11535                 i40e_reset_and_rebuild(pf, false);
11536                 rtnl_unlock();
11537         }
11538
11539         return 0;
11540 }
11541
11542 #endif
11543 static const struct pci_error_handlers i40e_err_handler = {
11544         .error_detected = i40e_pci_error_detected,
11545         .slot_reset = i40e_pci_error_slot_reset,
11546         .resume = i40e_pci_error_resume,
11547 };
11548
11549 static struct pci_driver i40e_driver = {
11550         .name     = i40e_driver_name,
11551         .id_table = i40e_pci_tbl,
11552         .probe    = i40e_probe,
11553         .remove   = i40e_remove,
11554 #ifdef CONFIG_PM
11555         .suspend  = i40e_suspend,
11556         .resume   = i40e_resume,
11557 #endif
11558         .shutdown = i40e_shutdown,
11559         .err_handler = &i40e_err_handler,
11560         .sriov_configure = i40e_pci_sriov_configure,
11561 };
11562
11563 /**
11564  * i40e_init_module - Driver registration routine
11565  *
11566  * i40e_init_module is the first routine called when the driver is
11567  * loaded. All it does is register with the PCI subsystem.
11568  **/
11569 static int __init i40e_init_module(void)
11570 {
11571         pr_info("%s: %s - version %s\n", i40e_driver_name,
11572                 i40e_driver_string, i40e_driver_version_str);
11573         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
11574
11575         /* we will see if single thread per module is enough for now,
11576          * it can't be any worse than using the system workqueue which
11577          * was already single threaded
11578          */
11579         i40e_wq = create_singlethread_workqueue(i40e_driver_name);
11580         if (!i40e_wq) {
11581                 pr_err("%s: Failed to create workqueue\n", i40e_driver_name);
11582                 return -ENOMEM;
11583         }
11584
11585         i40e_dbg_init();
11586         return pci_register_driver(&i40e_driver);
11587 }
11588 module_init(i40e_init_module);
11589
11590 /**
11591  * i40e_exit_module - Driver exit cleanup routine
11592  *
11593  * i40e_exit_module is called just before the driver is removed
11594  * from memory.
11595  **/
11596 static void __exit i40e_exit_module(void)
11597 {
11598         pci_unregister_driver(&i40e_driver);
11599         destroy_workqueue(i40e_wq);
11600         i40e_dbg_exit();
11601 }
11602 module_exit(i40e_exit_module);