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                          * or explicitly disable if only one TC
5118                          */
5119                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5120                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5121                         else
5122                                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5123                         dev_dbg(&pf->pdev->dev,
5124                                 "DCBX offload is supported for this PF.\n");
5125                 }
5126         } else {
5127                 dev_info(&pf->pdev->dev,
5128                          "Query for DCB configuration failed, err %s aq_err %s\n",
5129                          i40e_stat_str(&pf->hw, err),
5130                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5131         }
5132
5133 out:
5134         return err;
5135 }
5136 #endif /* CONFIG_I40E_DCB */
5137 #define SPEED_SIZE 14
5138 #define FC_SIZE 8
5139 /**
5140  * i40e_print_link_message - print link up or down
5141  * @vsi: the VSI for which link needs a message
5142  */
5143 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
5144 {
5145         char *speed = "Unknown";
5146         char *fc = "Unknown";
5147
5148         if (vsi->current_isup == isup)
5149                 return;
5150         vsi->current_isup = isup;
5151         if (!isup) {
5152                 netdev_info(vsi->netdev, "NIC Link is Down\n");
5153                 return;
5154         }
5155
5156         /* Warn user if link speed on NPAR enabled partition is not at
5157          * least 10GB
5158          */
5159         if (vsi->back->hw.func_caps.npar_enable &&
5160             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
5161              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
5162                 netdev_warn(vsi->netdev,
5163                             "The partition detected link speed that is less than 10Gbps\n");
5164
5165         switch (vsi->back->hw.phy.link_info.link_speed) {
5166         case I40E_LINK_SPEED_40GB:
5167                 speed = "40 G";
5168                 break;
5169         case I40E_LINK_SPEED_20GB:
5170                 speed = "20 G";
5171                 break;
5172         case I40E_LINK_SPEED_10GB:
5173                 speed = "10 G";
5174                 break;
5175         case I40E_LINK_SPEED_1GB:
5176                 speed = "1000 M";
5177                 break;
5178         case I40E_LINK_SPEED_100MB:
5179                 speed = "100 M";
5180                 break;
5181         default:
5182                 break;
5183         }
5184
5185         switch (vsi->back->hw.fc.current_mode) {
5186         case I40E_FC_FULL:
5187                 fc = "RX/TX";
5188                 break;
5189         case I40E_FC_TX_PAUSE:
5190                 fc = "TX";
5191                 break;
5192         case I40E_FC_RX_PAUSE:
5193                 fc = "RX";
5194                 break;
5195         default:
5196                 fc = "None";
5197                 break;
5198         }
5199
5200         netdev_info(vsi->netdev, "NIC Link is Up %sbps Full Duplex, Flow Control: %s\n",
5201                     speed, fc);
5202 }
5203
5204 /**
5205  * i40e_up_complete - Finish the last steps of bringing up a connection
5206  * @vsi: the VSI being configured
5207  **/
5208 static int i40e_up_complete(struct i40e_vsi *vsi)
5209 {
5210         struct i40e_pf *pf = vsi->back;
5211         int err;
5212
5213         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5214                 i40e_vsi_configure_msix(vsi);
5215         else
5216                 i40e_configure_msi_and_legacy(vsi);
5217
5218         /* start rings */
5219         err = i40e_vsi_control_rings(vsi, true);
5220         if (err)
5221                 return err;
5222
5223         clear_bit(__I40E_DOWN, &vsi->state);
5224         i40e_napi_enable_all(vsi);
5225         i40e_vsi_enable_irq(vsi);
5226
5227         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
5228             (vsi->netdev)) {
5229                 i40e_print_link_message(vsi, true);
5230                 netif_tx_start_all_queues(vsi->netdev);
5231                 netif_carrier_on(vsi->netdev);
5232         } else if (vsi->netdev) {
5233                 i40e_print_link_message(vsi, false);
5234                 /* need to check for qualified module here*/
5235                 if ((pf->hw.phy.link_info.link_info &
5236                         I40E_AQ_MEDIA_AVAILABLE) &&
5237                     (!(pf->hw.phy.link_info.an_info &
5238                         I40E_AQ_QUALIFIED_MODULE)))
5239                         netdev_err(vsi->netdev,
5240                                    "the driver failed to link because an unqualified module was detected.");
5241         }
5242
5243         /* replay FDIR SB filters */
5244         if (vsi->type == I40E_VSI_FDIR) {
5245                 /* reset fd counters */
5246                 pf->fd_add_err = pf->fd_atr_cnt = 0;
5247                 if (pf->fd_tcp_rule > 0) {
5248                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5249                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5250                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
5251                         pf->fd_tcp_rule = 0;
5252                 }
5253                 i40e_fdir_filter_restore(vsi);
5254         }
5255
5256         /* On the next run of the service_task, notify any clients of the new
5257          * opened netdev
5258          */
5259         pf->flags |= I40E_FLAG_SERVICE_CLIENT_REQUESTED;
5260         i40e_service_event_schedule(pf);
5261
5262         return 0;
5263 }
5264
5265 /**
5266  * i40e_vsi_reinit_locked - Reset the VSI
5267  * @vsi: the VSI being configured
5268  *
5269  * Rebuild the ring structs after some configuration
5270  * has changed, e.g. MTU size.
5271  **/
5272 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
5273 {
5274         struct i40e_pf *pf = vsi->back;
5275
5276         WARN_ON(in_interrupt());
5277         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
5278                 usleep_range(1000, 2000);
5279         i40e_down(vsi);
5280
5281         i40e_up(vsi);
5282         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
5283 }
5284
5285 /**
5286  * i40e_up - Bring the connection back up after being down
5287  * @vsi: the VSI being configured
5288  **/
5289 int i40e_up(struct i40e_vsi *vsi)
5290 {
5291         int err;
5292
5293         err = i40e_vsi_configure(vsi);
5294         if (!err)
5295                 err = i40e_up_complete(vsi);
5296
5297         return err;
5298 }
5299
5300 /**
5301  * i40e_down - Shutdown the connection processing
5302  * @vsi: the VSI being stopped
5303  **/
5304 void i40e_down(struct i40e_vsi *vsi)
5305 {
5306         int i;
5307
5308         /* It is assumed that the caller of this function
5309          * sets the vsi->state __I40E_DOWN bit.
5310          */
5311         if (vsi->netdev) {
5312                 netif_carrier_off(vsi->netdev);
5313                 netif_tx_disable(vsi->netdev);
5314         }
5315         i40e_vsi_disable_irq(vsi);
5316         i40e_vsi_control_rings(vsi, false);
5317         i40e_napi_disable_all(vsi);
5318
5319         for (i = 0; i < vsi->num_queue_pairs; i++) {
5320                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5321                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5322         }
5323
5324         i40e_notify_client_of_netdev_close(vsi, false);
5325
5326 }
5327
5328 /**
5329  * i40e_setup_tc - configure multiple traffic classes
5330  * @netdev: net device to configure
5331  * @tc: number of traffic classes to enable
5332  **/
5333 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5334 {
5335         struct i40e_netdev_priv *np = netdev_priv(netdev);
5336         struct i40e_vsi *vsi = np->vsi;
5337         struct i40e_pf *pf = vsi->back;
5338         u8 enabled_tc = 0;
5339         int ret = -EINVAL;
5340         int i;
5341
5342         /* Check if DCB enabled to continue */
5343         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5344                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5345                 goto exit;
5346         }
5347
5348         /* Check if MFP enabled */
5349         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5350                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5351                 goto exit;
5352         }
5353
5354         /* Check whether tc count is within enabled limit */
5355         if (tc > i40e_pf_get_num_tc(pf)) {
5356                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5357                 goto exit;
5358         }
5359
5360         /* Generate TC map for number of tc requested */
5361         for (i = 0; i < tc; i++)
5362                 enabled_tc |= BIT(i);
5363
5364         /* Requesting same TC configuration as already enabled */
5365         if (enabled_tc == vsi->tc_config.enabled_tc)
5366                 return 0;
5367
5368         /* Quiesce VSI queues */
5369         i40e_quiesce_vsi(vsi);
5370
5371         /* Configure VSI for enabled TCs */
5372         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5373         if (ret) {
5374                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5375                             vsi->seid);
5376                 goto exit;
5377         }
5378
5379         /* Unquiesce VSI */
5380         i40e_unquiesce_vsi(vsi);
5381
5382 exit:
5383         return ret;
5384 }
5385
5386 #ifdef I40E_FCOE
5387 int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5388                     struct tc_to_netdev *tc)
5389 #else
5390 static int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5391                            struct tc_to_netdev *tc)
5392 #endif
5393 {
5394         if (handle != TC_H_ROOT || tc->type != TC_SETUP_MQPRIO)
5395                 return -EINVAL;
5396         return i40e_setup_tc(netdev, tc->tc);
5397 }
5398
5399 /**
5400  * i40e_open - Called when a network interface is made active
5401  * @netdev: network interface device structure
5402  *
5403  * The open entry point is called when a network interface is made
5404  * active by the system (IFF_UP).  At this point all resources needed
5405  * for transmit and receive operations are allocated, the interrupt
5406  * handler is registered with the OS, the netdev watchdog subtask is
5407  * enabled, and the stack is notified that the interface is ready.
5408  *
5409  * Returns 0 on success, negative value on failure
5410  **/
5411 int i40e_open(struct net_device *netdev)
5412 {
5413         struct i40e_netdev_priv *np = netdev_priv(netdev);
5414         struct i40e_vsi *vsi = np->vsi;
5415         struct i40e_pf *pf = vsi->back;
5416         int err;
5417
5418         /* disallow open during test or if eeprom is broken */
5419         if (test_bit(__I40E_TESTING, &pf->state) ||
5420             test_bit(__I40E_BAD_EEPROM, &pf->state))
5421                 return -EBUSY;
5422
5423         netif_carrier_off(netdev);
5424
5425         err = i40e_vsi_open(vsi);
5426         if (err)
5427                 return err;
5428
5429         /* configure global TSO hardware offload settings */
5430         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5431                                                        TCP_FLAG_FIN) >> 16);
5432         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5433                                                        TCP_FLAG_FIN |
5434                                                        TCP_FLAG_CWR) >> 16);
5435         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5436
5437         udp_tunnel_get_rx_info(netdev);
5438
5439         return 0;
5440 }
5441
5442 /**
5443  * i40e_vsi_open -
5444  * @vsi: the VSI to open
5445  *
5446  * Finish initialization of the VSI.
5447  *
5448  * Returns 0 on success, negative value on failure
5449  **/
5450 int i40e_vsi_open(struct i40e_vsi *vsi)
5451 {
5452         struct i40e_pf *pf = vsi->back;
5453         char int_name[I40E_INT_NAME_STR_LEN];
5454         int err;
5455
5456         /* allocate descriptors */
5457         err = i40e_vsi_setup_tx_resources(vsi);
5458         if (err)
5459                 goto err_setup_tx;
5460         err = i40e_vsi_setup_rx_resources(vsi);
5461         if (err)
5462                 goto err_setup_rx;
5463
5464         err = i40e_vsi_configure(vsi);
5465         if (err)
5466                 goto err_setup_rx;
5467
5468         if (vsi->netdev) {
5469                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5470                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5471                 err = i40e_vsi_request_irq(vsi, int_name);
5472                 if (err)
5473                         goto err_setup_rx;
5474
5475                 /* Notify the stack of the actual queue counts. */
5476                 err = netif_set_real_num_tx_queues(vsi->netdev,
5477                                                    vsi->num_queue_pairs);
5478                 if (err)
5479                         goto err_set_queues;
5480
5481                 err = netif_set_real_num_rx_queues(vsi->netdev,
5482                                                    vsi->num_queue_pairs);
5483                 if (err)
5484                         goto err_set_queues;
5485
5486         } else if (vsi->type == I40E_VSI_FDIR) {
5487                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5488                          dev_driver_string(&pf->pdev->dev),
5489                          dev_name(&pf->pdev->dev));
5490                 err = i40e_vsi_request_irq(vsi, int_name);
5491
5492         } else {
5493                 err = -EINVAL;
5494                 goto err_setup_rx;
5495         }
5496
5497         err = i40e_up_complete(vsi);
5498         if (err)
5499                 goto err_up_complete;
5500
5501         return 0;
5502
5503 err_up_complete:
5504         i40e_down(vsi);
5505 err_set_queues:
5506         i40e_vsi_free_irq(vsi);
5507 err_setup_rx:
5508         i40e_vsi_free_rx_resources(vsi);
5509 err_setup_tx:
5510         i40e_vsi_free_tx_resources(vsi);
5511         if (vsi == pf->vsi[pf->lan_vsi])
5512                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5513
5514         return err;
5515 }
5516
5517 /**
5518  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5519  * @pf: Pointer to PF
5520  *
5521  * This function destroys the hlist where all the Flow Director
5522  * filters were saved.
5523  **/
5524 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5525 {
5526         struct i40e_fdir_filter *filter;
5527         struct hlist_node *node2;
5528
5529         hlist_for_each_entry_safe(filter, node2,
5530                                   &pf->fdir_filter_list, fdir_node) {
5531                 hlist_del(&filter->fdir_node);
5532                 kfree(filter);
5533         }
5534         pf->fdir_pf_active_filters = 0;
5535 }
5536
5537 /**
5538  * i40e_close - Disables a network interface
5539  * @netdev: network interface device structure
5540  *
5541  * The close entry point is called when an interface is de-activated
5542  * by the OS.  The hardware is still under the driver's control, but
5543  * this netdev interface is disabled.
5544  *
5545  * Returns 0, this is not allowed to fail
5546  **/
5547 int i40e_close(struct net_device *netdev)
5548 {
5549         struct i40e_netdev_priv *np = netdev_priv(netdev);
5550         struct i40e_vsi *vsi = np->vsi;
5551
5552         i40e_vsi_close(vsi);
5553
5554         return 0;
5555 }
5556
5557 /**
5558  * i40e_do_reset - Start a PF or Core Reset sequence
5559  * @pf: board private structure
5560  * @reset_flags: which reset is requested
5561  *
5562  * The essential difference in resets is that the PF Reset
5563  * doesn't clear the packet buffers, doesn't reset the PE
5564  * firmware, and doesn't bother the other PFs on the chip.
5565  **/
5566 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5567 {
5568         u32 val;
5569
5570         WARN_ON(in_interrupt());
5571
5572
5573         /* do the biggest reset indicated */
5574         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5575
5576                 /* Request a Global Reset
5577                  *
5578                  * This will start the chip's countdown to the actual full
5579                  * chip reset event, and a warning interrupt to be sent
5580                  * to all PFs, including the requestor.  Our handler
5581                  * for the warning interrupt will deal with the shutdown
5582                  * and recovery of the switch setup.
5583                  */
5584                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5585                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5586                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5587                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5588
5589         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5590
5591                 /* Request a Core Reset
5592                  *
5593                  * Same as Global Reset, except does *not* include the MAC/PHY
5594                  */
5595                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5596                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5597                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5598                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5599                 i40e_flush(&pf->hw);
5600
5601         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5602
5603                 /* Request a PF Reset
5604                  *
5605                  * Resets only the PF-specific registers
5606                  *
5607                  * This goes directly to the tear-down and rebuild of
5608                  * the switch, since we need to do all the recovery as
5609                  * for the Core Reset.
5610                  */
5611                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5612                 i40e_handle_reset_warning(pf);
5613
5614         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5615                 int v;
5616
5617                 /* Find the VSI(s) that requested a re-init */
5618                 dev_info(&pf->pdev->dev,
5619                          "VSI reinit requested\n");
5620                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5621                         struct i40e_vsi *vsi = pf->vsi[v];
5622
5623                         if (vsi != NULL &&
5624                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5625                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5626                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5627                         }
5628                 }
5629         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5630                 int v;
5631
5632                 /* Find the VSI(s) that needs to be brought down */
5633                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5634                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5635                         struct i40e_vsi *vsi = pf->vsi[v];
5636
5637                         if (vsi != NULL &&
5638                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5639                                 set_bit(__I40E_DOWN, &vsi->state);
5640                                 i40e_down(vsi);
5641                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5642                         }
5643                 }
5644         } else {
5645                 dev_info(&pf->pdev->dev,
5646                          "bad reset request 0x%08x\n", reset_flags);
5647         }
5648 }
5649
5650 #ifdef CONFIG_I40E_DCB
5651 /**
5652  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5653  * @pf: board private structure
5654  * @old_cfg: current DCB config
5655  * @new_cfg: new DCB config
5656  **/
5657 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5658                             struct i40e_dcbx_config *old_cfg,
5659                             struct i40e_dcbx_config *new_cfg)
5660 {
5661         bool need_reconfig = false;
5662
5663         /* Check if ETS configuration has changed */
5664         if (memcmp(&new_cfg->etscfg,
5665                    &old_cfg->etscfg,
5666                    sizeof(new_cfg->etscfg))) {
5667                 /* If Priority Table has changed reconfig is needed */
5668                 if (memcmp(&new_cfg->etscfg.prioritytable,
5669                            &old_cfg->etscfg.prioritytable,
5670                            sizeof(new_cfg->etscfg.prioritytable))) {
5671                         need_reconfig = true;
5672                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5673                 }
5674
5675                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5676                            &old_cfg->etscfg.tcbwtable,
5677                            sizeof(new_cfg->etscfg.tcbwtable)))
5678                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5679
5680                 if (memcmp(&new_cfg->etscfg.tsatable,
5681                            &old_cfg->etscfg.tsatable,
5682                            sizeof(new_cfg->etscfg.tsatable)))
5683                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5684         }
5685
5686         /* Check if PFC configuration has changed */
5687         if (memcmp(&new_cfg->pfc,
5688                    &old_cfg->pfc,
5689                    sizeof(new_cfg->pfc))) {
5690                 need_reconfig = true;
5691                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5692         }
5693
5694         /* Check if APP Table has changed */
5695         if (memcmp(&new_cfg->app,
5696                    &old_cfg->app,
5697                    sizeof(new_cfg->app))) {
5698                 need_reconfig = true;
5699                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5700         }
5701
5702         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5703         return need_reconfig;
5704 }
5705
5706 /**
5707  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5708  * @pf: board private structure
5709  * @e: event info posted on ARQ
5710  **/
5711 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5712                                   struct i40e_arq_event_info *e)
5713 {
5714         struct i40e_aqc_lldp_get_mib *mib =
5715                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5716         struct i40e_hw *hw = &pf->hw;
5717         struct i40e_dcbx_config tmp_dcbx_cfg;
5718         bool need_reconfig = false;
5719         int ret = 0;
5720         u8 type;
5721
5722         /* Not DCB capable or capability disabled */
5723         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
5724                 return ret;
5725
5726         /* Ignore if event is not for Nearest Bridge */
5727         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5728                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5729         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5730         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5731                 return ret;
5732
5733         /* Check MIB Type and return if event for Remote MIB update */
5734         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5735         dev_dbg(&pf->pdev->dev,
5736                 "LLDP event mib type %s\n", type ? "remote" : "local");
5737         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5738                 /* Update the remote cached instance and return */
5739                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5740                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5741                                 &hw->remote_dcbx_config);
5742                 goto exit;
5743         }
5744
5745         /* Store the old configuration */
5746         tmp_dcbx_cfg = hw->local_dcbx_config;
5747
5748         /* Reset the old DCBx configuration data */
5749         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5750         /* Get updated DCBX data from firmware */
5751         ret = i40e_get_dcb_config(&pf->hw);
5752         if (ret) {
5753                 dev_info(&pf->pdev->dev,
5754                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5755                          i40e_stat_str(&pf->hw, ret),
5756                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5757                 goto exit;
5758         }
5759
5760         /* No change detected in DCBX configs */
5761         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5762                     sizeof(tmp_dcbx_cfg))) {
5763                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5764                 goto exit;
5765         }
5766
5767         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5768                                                &hw->local_dcbx_config);
5769
5770         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5771
5772         if (!need_reconfig)
5773                 goto exit;
5774
5775         /* Enable DCB tagging only when more than one TC */
5776         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5777                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5778         else
5779                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5780
5781         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5782         /* Reconfiguration needed quiesce all VSIs */
5783         i40e_pf_quiesce_all_vsi(pf);
5784
5785         /* Changes in configuration update VEB/VSI */
5786         i40e_dcb_reconfigure(pf);
5787
5788         ret = i40e_resume_port_tx(pf);
5789
5790         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5791         /* In case of error no point in resuming VSIs */
5792         if (ret)
5793                 goto exit;
5794
5795         /* Wait for the PF's queues to be disabled */
5796         ret = i40e_pf_wait_queues_disabled(pf);
5797         if (ret) {
5798                 /* Schedule PF reset to recover */
5799                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5800                 i40e_service_event_schedule(pf);
5801         } else {
5802                 i40e_pf_unquiesce_all_vsi(pf);
5803                 /* Notify the client for the DCB changes */
5804                 i40e_notify_client_of_l2_param_changes(pf->vsi[pf->lan_vsi]);
5805         }
5806
5807 exit:
5808         return ret;
5809 }
5810 #endif /* CONFIG_I40E_DCB */
5811
5812 /**
5813  * i40e_do_reset_safe - Protected reset path for userland calls.
5814  * @pf: board private structure
5815  * @reset_flags: which reset is requested
5816  *
5817  **/
5818 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5819 {
5820         rtnl_lock();
5821         i40e_do_reset(pf, reset_flags);
5822         rtnl_unlock();
5823 }
5824
5825 /**
5826  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5827  * @pf: board private structure
5828  * @e: event info posted on ARQ
5829  *
5830  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5831  * and VF queues
5832  **/
5833 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5834                                            struct i40e_arq_event_info *e)
5835 {
5836         struct i40e_aqc_lan_overflow *data =
5837                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5838         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5839         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5840         struct i40e_hw *hw = &pf->hw;
5841         struct i40e_vf *vf;
5842         u16 vf_id;
5843
5844         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5845                 queue, qtx_ctl);
5846
5847         /* Queue belongs to VF, find the VF and issue VF reset */
5848         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5849             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5850                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5851                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5852                 vf_id -= hw->func_caps.vf_base_id;
5853                 vf = &pf->vf[vf_id];
5854                 i40e_vc_notify_vf_reset(vf);
5855                 /* Allow VF to process pending reset notification */
5856                 msleep(20);
5857                 i40e_reset_vf(vf, false);
5858         }
5859 }
5860
5861 /**
5862  * i40e_service_event_complete - Finish up the service event
5863  * @pf: board private structure
5864  **/
5865 static void i40e_service_event_complete(struct i40e_pf *pf)
5866 {
5867         WARN_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5868
5869         /* flush memory to make sure state is correct before next watchog */
5870         smp_mb__before_atomic();
5871         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5872 }
5873
5874 /**
5875  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5876  * @pf: board private structure
5877  **/
5878 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5879 {
5880         u32 val, fcnt_prog;
5881
5882         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5883         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5884         return fcnt_prog;
5885 }
5886
5887 /**
5888  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5889  * @pf: board private structure
5890  **/
5891 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5892 {
5893         u32 val, fcnt_prog;
5894
5895         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5896         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5897                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5898                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5899         return fcnt_prog;
5900 }
5901
5902 /**
5903  * i40e_get_global_fd_count - Get total FD filters programmed on device
5904  * @pf: board private structure
5905  **/
5906 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5907 {
5908         u32 val, fcnt_prog;
5909
5910         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5911         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5912                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5913                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5914         return fcnt_prog;
5915 }
5916
5917 /**
5918  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5919  * @pf: board private structure
5920  **/
5921 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5922 {
5923         struct i40e_fdir_filter *filter;
5924         u32 fcnt_prog, fcnt_avail;
5925         struct hlist_node *node;
5926
5927         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5928                 return;
5929
5930         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5931          * to re-enable
5932          */
5933         fcnt_prog = i40e_get_global_fd_count(pf);
5934         fcnt_avail = pf->fdir_pf_filter_count;
5935         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5936             (pf->fd_add_err == 0) ||
5937             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5938                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5939                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5940                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5941                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5942                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5943                 }
5944         }
5945         /* Wait for some more space to be available to turn on ATR */
5946         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5947                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5948                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5949                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5950                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5951                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5952                 }
5953         }
5954
5955         /* if hw had a problem adding a filter, delete it */
5956         if (pf->fd_inv > 0) {
5957                 hlist_for_each_entry_safe(filter, node,
5958                                           &pf->fdir_filter_list, fdir_node) {
5959                         if (filter->fd_id == pf->fd_inv) {
5960                                 hlist_del(&filter->fdir_node);
5961                                 kfree(filter);
5962                                 pf->fdir_pf_active_filters--;
5963                         }
5964                 }
5965         }
5966 }
5967
5968 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5969 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5970 /**
5971  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5972  * @pf: board private structure
5973  **/
5974 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5975 {
5976         unsigned long min_flush_time;
5977         int flush_wait_retry = 50;
5978         bool disable_atr = false;
5979         int fd_room;
5980         int reg;
5981
5982         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5983                 return;
5984
5985         if (!time_after(jiffies, pf->fd_flush_timestamp +
5986                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
5987                 return;
5988
5989         /* If the flush is happening too quick and we have mostly SB rules we
5990          * should not re-enable ATR for some time.
5991          */
5992         min_flush_time = pf->fd_flush_timestamp +
5993                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5994         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5995
5996         if (!(time_after(jiffies, min_flush_time)) &&
5997             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5998                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5999                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
6000                 disable_atr = true;
6001         }
6002
6003         pf->fd_flush_timestamp = jiffies;
6004         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
6005         /* flush all filters */
6006         wr32(&pf->hw, I40E_PFQF_CTL_1,
6007              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
6008         i40e_flush(&pf->hw);
6009         pf->fd_flush_cnt++;
6010         pf->fd_add_err = 0;
6011         do {
6012                 /* Check FD flush status every 5-6msec */
6013                 usleep_range(5000, 6000);
6014                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
6015                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
6016                         break;
6017         } while (flush_wait_retry--);
6018         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
6019                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
6020         } else {
6021                 /* replay sideband filters */
6022                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
6023                 if (!disable_atr)
6024                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
6025                 clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
6026                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
6027                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
6028         }
6029 }
6030
6031 /**
6032  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
6033  * @pf: board private structure
6034  **/
6035 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
6036 {
6037         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
6038 }
6039
6040 /* We can see up to 256 filter programming desc in transit if the filters are
6041  * being applied really fast; before we see the first
6042  * filter miss error on Rx queue 0. Accumulating enough error messages before
6043  * reacting will make sure we don't cause flush too often.
6044  */
6045 #define I40E_MAX_FD_PROGRAM_ERROR 256
6046
6047 /**
6048  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
6049  * @pf: board private structure
6050  **/
6051 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
6052 {
6053
6054         /* if interface is down do nothing */
6055         if (test_bit(__I40E_DOWN, &pf->state))
6056                 return;
6057
6058         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
6059                 return;
6060
6061         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
6062                 i40e_fdir_flush_and_replay(pf);
6063
6064         i40e_fdir_check_and_reenable(pf);
6065
6066 }
6067
6068 /**
6069  * i40e_vsi_link_event - notify VSI of a link event
6070  * @vsi: vsi to be notified
6071  * @link_up: link up or down
6072  **/
6073 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
6074 {
6075         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
6076                 return;
6077
6078         switch (vsi->type) {
6079         case I40E_VSI_MAIN:
6080 #ifdef I40E_FCOE
6081         case I40E_VSI_FCOE:
6082 #endif
6083                 if (!vsi->netdev || !vsi->netdev_registered)
6084                         break;
6085
6086                 if (link_up) {
6087                         netif_carrier_on(vsi->netdev);
6088                         netif_tx_wake_all_queues(vsi->netdev);
6089                 } else {
6090                         netif_carrier_off(vsi->netdev);
6091                         netif_tx_stop_all_queues(vsi->netdev);
6092                 }
6093                 break;
6094
6095         case I40E_VSI_SRIOV:
6096         case I40E_VSI_VMDQ2:
6097         case I40E_VSI_CTRL:
6098         case I40E_VSI_IWARP:
6099         case I40E_VSI_MIRROR:
6100         default:
6101                 /* there is no notification for other VSIs */
6102                 break;
6103         }
6104 }
6105
6106 /**
6107  * i40e_veb_link_event - notify elements on the veb of a link event
6108  * @veb: veb to be notified
6109  * @link_up: link up or down
6110  **/
6111 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
6112 {
6113         struct i40e_pf *pf;
6114         int i;
6115
6116         if (!veb || !veb->pf)
6117                 return;
6118         pf = veb->pf;
6119
6120         /* depth first... */
6121         for (i = 0; i < I40E_MAX_VEB; i++)
6122                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
6123                         i40e_veb_link_event(pf->veb[i], link_up);
6124
6125         /* ... now the local VSIs */
6126         for (i = 0; i < pf->num_alloc_vsi; i++)
6127                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
6128                         i40e_vsi_link_event(pf->vsi[i], link_up);
6129 }
6130
6131 /**
6132  * i40e_link_event - Update netif_carrier status
6133  * @pf: board private structure
6134  **/
6135 static void i40e_link_event(struct i40e_pf *pf)
6136 {
6137         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6138         u8 new_link_speed, old_link_speed;
6139         i40e_status status;
6140         bool new_link, old_link;
6141
6142         /* save off old link status information */
6143         pf->hw.phy.link_info_old = pf->hw.phy.link_info;
6144
6145         /* set this to force the get_link_status call to refresh state */
6146         pf->hw.phy.get_link_info = true;
6147
6148         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
6149
6150         status = i40e_get_link_status(&pf->hw, &new_link);
6151         if (status) {
6152                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
6153                         status);
6154                 return;
6155         }
6156
6157         old_link_speed = pf->hw.phy.link_info_old.link_speed;
6158         new_link_speed = pf->hw.phy.link_info.link_speed;
6159
6160         if (new_link == old_link &&
6161             new_link_speed == old_link_speed &&
6162             (test_bit(__I40E_DOWN, &vsi->state) ||
6163              new_link == netif_carrier_ok(vsi->netdev)))
6164                 return;
6165
6166         if (!test_bit(__I40E_DOWN, &vsi->state))
6167                 i40e_print_link_message(vsi, new_link);
6168
6169         /* Notify the base of the switch tree connected to
6170          * the link.  Floating VEBs are not notified.
6171          */
6172         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
6173                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
6174         else
6175                 i40e_vsi_link_event(vsi, new_link);
6176
6177         if (pf->vf)
6178                 i40e_vc_notify_link_state(pf);
6179
6180         if (pf->flags & I40E_FLAG_PTP)
6181                 i40e_ptp_set_increment(pf);
6182 }
6183
6184 /**
6185  * i40e_watchdog_subtask - periodic checks not using event driven response
6186  * @pf: board private structure
6187  **/
6188 static void i40e_watchdog_subtask(struct i40e_pf *pf)
6189 {
6190         int i;
6191
6192         /* if interface is down do nothing */
6193         if (test_bit(__I40E_DOWN, &pf->state) ||
6194             test_bit(__I40E_CONFIG_BUSY, &pf->state))
6195                 return;
6196
6197         /* make sure we don't do these things too often */
6198         if (time_before(jiffies, (pf->service_timer_previous +
6199                                   pf->service_timer_period)))
6200                 return;
6201         pf->service_timer_previous = jiffies;
6202
6203         if (pf->flags & I40E_FLAG_LINK_POLLING_ENABLED)
6204                 i40e_link_event(pf);
6205
6206         /* Update the stats for active netdevs so the network stack
6207          * can look at updated numbers whenever it cares to
6208          */
6209         for (i = 0; i < pf->num_alloc_vsi; i++)
6210                 if (pf->vsi[i] && pf->vsi[i]->netdev)
6211                         i40e_update_stats(pf->vsi[i]);
6212
6213         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
6214                 /* Update the stats for the active switching components */
6215                 for (i = 0; i < I40E_MAX_VEB; i++)
6216                         if (pf->veb[i])
6217                                 i40e_update_veb_stats(pf->veb[i]);
6218         }
6219
6220         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
6221 }
6222
6223 /**
6224  * i40e_reset_subtask - Set up for resetting the device and driver
6225  * @pf: board private structure
6226  **/
6227 static void i40e_reset_subtask(struct i40e_pf *pf)
6228 {
6229         u32 reset_flags = 0;
6230
6231         rtnl_lock();
6232         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
6233                 reset_flags |= BIT(__I40E_REINIT_REQUESTED);
6234                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
6235         }
6236         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
6237                 reset_flags |= BIT(__I40E_PF_RESET_REQUESTED);
6238                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6239         }
6240         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
6241                 reset_flags |= BIT(__I40E_CORE_RESET_REQUESTED);
6242                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
6243         }
6244         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
6245                 reset_flags |= BIT(__I40E_GLOBAL_RESET_REQUESTED);
6246                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
6247         }
6248         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
6249                 reset_flags |= BIT(__I40E_DOWN_REQUESTED);
6250                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
6251         }
6252
6253         /* If there's a recovery already waiting, it takes
6254          * precedence before starting a new reset sequence.
6255          */
6256         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
6257                 i40e_handle_reset_warning(pf);
6258                 goto unlock;
6259         }
6260
6261         /* If we're already down or resetting, just bail */
6262         if (reset_flags &&
6263             !test_bit(__I40E_DOWN, &pf->state) &&
6264             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
6265                 i40e_do_reset(pf, reset_flags);
6266
6267 unlock:
6268         rtnl_unlock();
6269 }
6270
6271 /**
6272  * i40e_handle_link_event - Handle link event
6273  * @pf: board private structure
6274  * @e: event info posted on ARQ
6275  **/
6276 static void i40e_handle_link_event(struct i40e_pf *pf,
6277                                    struct i40e_arq_event_info *e)
6278 {
6279         struct i40e_aqc_get_link_status *status =
6280                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
6281
6282         /* Do a new status request to re-enable LSE reporting
6283          * and load new status information into the hw struct
6284          * This completely ignores any state information
6285          * in the ARQ event info, instead choosing to always
6286          * issue the AQ update link status command.
6287          */
6288         i40e_link_event(pf);
6289
6290         /* check for unqualified module, if link is down */
6291         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
6292             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
6293             (!(status->link_info & I40E_AQ_LINK_UP)))
6294                 dev_err(&pf->pdev->dev,
6295                         "The driver failed to link because an unqualified module was detected.\n");
6296 }
6297
6298 /**
6299  * i40e_clean_adminq_subtask - Clean the AdminQ rings
6300  * @pf: board private structure
6301  **/
6302 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6303 {
6304         struct i40e_arq_event_info event;
6305         struct i40e_hw *hw = &pf->hw;
6306         u16 pending, i = 0;
6307         i40e_status ret;
6308         u16 opcode;
6309         u32 oldval;
6310         u32 val;
6311
6312         /* Do not run clean AQ when PF reset fails */
6313         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6314                 return;
6315
6316         /* check for error indications */
6317         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6318         oldval = val;
6319         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6320                 if (hw->debug_mask & I40E_DEBUG_AQ)
6321                         dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6322                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6323         }
6324         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6325                 if (hw->debug_mask & I40E_DEBUG_AQ)
6326                         dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6327                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6328                 pf->arq_overflows++;
6329         }
6330         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6331                 if (hw->debug_mask & I40E_DEBUG_AQ)
6332                         dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6333                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6334         }
6335         if (oldval != val)
6336                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6337
6338         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6339         oldval = val;
6340         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6341                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6342                         dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6343                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6344         }
6345         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6346                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6347                         dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6348                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6349         }
6350         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6351                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6352                         dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6353                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6354         }
6355         if (oldval != val)
6356                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6357
6358         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6359         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6360         if (!event.msg_buf)
6361                 return;
6362
6363         do {
6364                 ret = i40e_clean_arq_element(hw, &event, &pending);
6365                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6366                         break;
6367                 else if (ret) {
6368                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6369                         break;
6370                 }
6371
6372                 opcode = le16_to_cpu(event.desc.opcode);
6373                 switch (opcode) {
6374
6375                 case i40e_aqc_opc_get_link_status:
6376                         i40e_handle_link_event(pf, &event);
6377                         break;
6378                 case i40e_aqc_opc_send_msg_to_pf:
6379                         ret = i40e_vc_process_vf_msg(pf,
6380                                         le16_to_cpu(event.desc.retval),
6381                                         le32_to_cpu(event.desc.cookie_high),
6382                                         le32_to_cpu(event.desc.cookie_low),
6383                                         event.msg_buf,
6384                                         event.msg_len);
6385                         break;
6386                 case i40e_aqc_opc_lldp_update_mib:
6387                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6388 #ifdef CONFIG_I40E_DCB
6389                         rtnl_lock();
6390                         ret = i40e_handle_lldp_event(pf, &event);
6391                         rtnl_unlock();
6392 #endif /* CONFIG_I40E_DCB */
6393                         break;
6394                 case i40e_aqc_opc_event_lan_overflow:
6395                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6396                         i40e_handle_lan_overflow_event(pf, &event);
6397                         break;
6398                 case i40e_aqc_opc_send_msg_to_peer:
6399                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6400                         break;
6401                 case i40e_aqc_opc_nvm_erase:
6402                 case i40e_aqc_opc_nvm_update:
6403                 case i40e_aqc_opc_oem_post_update:
6404                         i40e_debug(&pf->hw, I40E_DEBUG_NVM,
6405                                    "ARQ NVM operation 0x%04x completed\n",
6406                                    opcode);
6407                         break;
6408                 default:
6409                         dev_info(&pf->pdev->dev,
6410                                  "ARQ: Unknown event 0x%04x ignored\n",
6411                                  opcode);
6412                         break;
6413                 }
6414         } while (pending && (i++ < pf->adminq_work_limit));
6415
6416         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6417         /* re-enable Admin queue interrupt cause */
6418         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6419         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6420         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6421         i40e_flush(hw);
6422
6423         kfree(event.msg_buf);
6424 }
6425
6426 /**
6427  * i40e_verify_eeprom - make sure eeprom is good to use
6428  * @pf: board private structure
6429  **/
6430 static void i40e_verify_eeprom(struct i40e_pf *pf)
6431 {
6432         int err;
6433
6434         err = i40e_diag_eeprom_test(&pf->hw);
6435         if (err) {
6436                 /* retry in case of garbage read */
6437                 err = i40e_diag_eeprom_test(&pf->hw);
6438                 if (err) {
6439                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6440                                  err);
6441                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6442                 }
6443         }
6444
6445         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6446                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6447                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6448         }
6449 }
6450
6451 /**
6452  * i40e_enable_pf_switch_lb
6453  * @pf: pointer to the PF structure
6454  *
6455  * enable switch loop back or die - no point in a return value
6456  **/
6457 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6458 {
6459         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6460         struct i40e_vsi_context ctxt;
6461         int ret;
6462
6463         ctxt.seid = pf->main_vsi_seid;
6464         ctxt.pf_num = pf->hw.pf_id;
6465         ctxt.vf_num = 0;
6466         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6467         if (ret) {
6468                 dev_info(&pf->pdev->dev,
6469                          "couldn't get PF vsi config, err %s aq_err %s\n",
6470                          i40e_stat_str(&pf->hw, ret),
6471                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6472                 return;
6473         }
6474         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6475         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6476         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6477
6478         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6479         if (ret) {
6480                 dev_info(&pf->pdev->dev,
6481                          "update vsi switch failed, err %s aq_err %s\n",
6482                          i40e_stat_str(&pf->hw, ret),
6483                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6484         }
6485 }
6486
6487 /**
6488  * i40e_disable_pf_switch_lb
6489  * @pf: pointer to the PF structure
6490  *
6491  * disable switch loop back or die - no point in a return value
6492  **/
6493 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6494 {
6495         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6496         struct i40e_vsi_context ctxt;
6497         int ret;
6498
6499         ctxt.seid = pf->main_vsi_seid;
6500         ctxt.pf_num = pf->hw.pf_id;
6501         ctxt.vf_num = 0;
6502         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6503         if (ret) {
6504                 dev_info(&pf->pdev->dev,
6505                          "couldn't get PF vsi config, err %s aq_err %s\n",
6506                          i40e_stat_str(&pf->hw, ret),
6507                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6508                 return;
6509         }
6510         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6511         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6512         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6513
6514         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6515         if (ret) {
6516                 dev_info(&pf->pdev->dev,
6517                          "update vsi switch failed, err %s aq_err %s\n",
6518                          i40e_stat_str(&pf->hw, ret),
6519                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6520         }
6521 }
6522
6523 /**
6524  * i40e_config_bridge_mode - Configure the HW bridge mode
6525  * @veb: pointer to the bridge instance
6526  *
6527  * Configure the loop back mode for the LAN VSI that is downlink to the
6528  * specified HW bridge instance. It is expected this function is called
6529  * when a new HW bridge is instantiated.
6530  **/
6531 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6532 {
6533         struct i40e_pf *pf = veb->pf;
6534
6535         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
6536                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6537                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6538         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6539                 i40e_disable_pf_switch_lb(pf);
6540         else
6541                 i40e_enable_pf_switch_lb(pf);
6542 }
6543
6544 /**
6545  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6546  * @veb: pointer to the VEB instance
6547  *
6548  * This is a recursive function that first builds the attached VSIs then
6549  * recurses in to build the next layer of VEB.  We track the connections
6550  * through our own index numbers because the seid's from the HW could
6551  * change across the reset.
6552  **/
6553 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6554 {
6555         struct i40e_vsi *ctl_vsi = NULL;
6556         struct i40e_pf *pf = veb->pf;
6557         int v, veb_idx;
6558         int ret;
6559
6560         /* build VSI that owns this VEB, temporarily attached to base VEB */
6561         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6562                 if (pf->vsi[v] &&
6563                     pf->vsi[v]->veb_idx == veb->idx &&
6564                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6565                         ctl_vsi = pf->vsi[v];
6566                         break;
6567                 }
6568         }
6569         if (!ctl_vsi) {
6570                 dev_info(&pf->pdev->dev,
6571                          "missing owner VSI for veb_idx %d\n", veb->idx);
6572                 ret = -ENOENT;
6573                 goto end_reconstitute;
6574         }
6575         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6576                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6577         ret = i40e_add_vsi(ctl_vsi);
6578         if (ret) {
6579                 dev_info(&pf->pdev->dev,
6580                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6581                          veb->idx, ret);
6582                 goto end_reconstitute;
6583         }
6584         i40e_vsi_reset_stats(ctl_vsi);
6585
6586         /* create the VEB in the switch and move the VSI onto the VEB */
6587         ret = i40e_add_veb(veb, ctl_vsi);
6588         if (ret)
6589                 goto end_reconstitute;
6590
6591         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6592                 veb->bridge_mode = BRIDGE_MODE_VEB;
6593         else
6594                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6595         i40e_config_bridge_mode(veb);
6596
6597         /* create the remaining VSIs attached to this VEB */
6598         for (v = 0; v < pf->num_alloc_vsi; v++) {
6599                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6600                         continue;
6601
6602                 if (pf->vsi[v]->veb_idx == veb->idx) {
6603                         struct i40e_vsi *vsi = pf->vsi[v];
6604
6605                         vsi->uplink_seid = veb->seid;
6606                         ret = i40e_add_vsi(vsi);
6607                         if (ret) {
6608                                 dev_info(&pf->pdev->dev,
6609                                          "rebuild of vsi_idx %d failed: %d\n",
6610                                          v, ret);
6611                                 goto end_reconstitute;
6612                         }
6613                         i40e_vsi_reset_stats(vsi);
6614                 }
6615         }
6616
6617         /* create any VEBs attached to this VEB - RECURSION */
6618         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6619                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6620                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6621                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6622                         if (ret)
6623                                 break;
6624                 }
6625         }
6626
6627 end_reconstitute:
6628         return ret;
6629 }
6630
6631 /**
6632  * i40e_get_capabilities - get info about the HW
6633  * @pf: the PF struct
6634  **/
6635 static int i40e_get_capabilities(struct i40e_pf *pf)
6636 {
6637         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6638         u16 data_size;
6639         int buf_len;
6640         int err;
6641
6642         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6643         do {
6644                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6645                 if (!cap_buf)
6646                         return -ENOMEM;
6647
6648                 /* this loads the data into the hw struct for us */
6649                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6650                                             &data_size,
6651                                             i40e_aqc_opc_list_func_capabilities,
6652                                             NULL);
6653                 /* data loaded, buffer no longer needed */
6654                 kfree(cap_buf);
6655
6656                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6657                         /* retry with a larger buffer */
6658                         buf_len = data_size;
6659                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6660                         dev_info(&pf->pdev->dev,
6661                                  "capability discovery failed, err %s aq_err %s\n",
6662                                  i40e_stat_str(&pf->hw, err),
6663                                  i40e_aq_str(&pf->hw,
6664                                              pf->hw.aq.asq_last_status));
6665                         return -ENODEV;
6666                 }
6667         } while (err);
6668
6669         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6670                 dev_info(&pf->pdev->dev,
6671                          "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",
6672                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6673                          pf->hw.func_caps.num_msix_vectors,
6674                          pf->hw.func_caps.num_msix_vectors_vf,
6675                          pf->hw.func_caps.fd_filters_guaranteed,
6676                          pf->hw.func_caps.fd_filters_best_effort,
6677                          pf->hw.func_caps.num_tx_qp,
6678                          pf->hw.func_caps.num_vsis);
6679
6680 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6681                        + pf->hw.func_caps.num_vfs)
6682         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6683                 dev_info(&pf->pdev->dev,
6684                          "got num_vsis %d, setting num_vsis to %d\n",
6685                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6686                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6687         }
6688
6689         return 0;
6690 }
6691
6692 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6693
6694 /**
6695  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6696  * @pf: board private structure
6697  **/
6698 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6699 {
6700         struct i40e_vsi *vsi;
6701         int i;
6702
6703         /* quick workaround for an NVM issue that leaves a critical register
6704          * uninitialized
6705          */
6706         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6707                 static const u32 hkey[] = {
6708                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6709                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6710                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6711                         0x95b3a76d};
6712
6713                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6714                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6715         }
6716
6717         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6718                 return;
6719
6720         /* find existing VSI and see if it needs configuring */
6721         vsi = NULL;
6722         for (i = 0; i < pf->num_alloc_vsi; i++) {
6723                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6724                         vsi = pf->vsi[i];
6725                         break;
6726                 }
6727         }
6728
6729         /* create a new VSI if none exists */
6730         if (!vsi) {
6731                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6732                                      pf->vsi[pf->lan_vsi]->seid, 0);
6733                 if (!vsi) {
6734                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6735                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6736                         return;
6737                 }
6738         }
6739
6740         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6741 }
6742
6743 /**
6744  * i40e_fdir_teardown - release the Flow Director resources
6745  * @pf: board private structure
6746  **/
6747 static void i40e_fdir_teardown(struct i40e_pf *pf)
6748 {
6749         int i;
6750
6751         i40e_fdir_filter_exit(pf);
6752         for (i = 0; i < pf->num_alloc_vsi; i++) {
6753                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6754                         i40e_vsi_release(pf->vsi[i]);
6755                         break;
6756                 }
6757         }
6758 }
6759
6760 /**
6761  * i40e_prep_for_reset - prep for the core to reset
6762  * @pf: board private structure
6763  *
6764  * Close up the VFs and other things in prep for PF Reset.
6765   **/
6766 static void i40e_prep_for_reset(struct i40e_pf *pf)
6767 {
6768         struct i40e_hw *hw = &pf->hw;
6769         i40e_status ret = 0;
6770         u32 v;
6771
6772         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6773         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6774                 return;
6775         if (i40e_check_asq_alive(&pf->hw))
6776                 i40e_vc_notify_reset(pf);
6777
6778         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6779
6780         /* quiesce the VSIs and their queues that are not already DOWN */
6781         i40e_pf_quiesce_all_vsi(pf);
6782
6783         for (v = 0; v < pf->num_alloc_vsi; v++) {
6784                 if (pf->vsi[v])
6785                         pf->vsi[v]->seid = 0;
6786         }
6787
6788         i40e_shutdown_adminq(&pf->hw);
6789
6790         /* call shutdown HMC */
6791         if (hw->hmc.hmc_obj) {
6792                 ret = i40e_shutdown_lan_hmc(hw);
6793                 if (ret)
6794                         dev_warn(&pf->pdev->dev,
6795                                  "shutdown_lan_hmc failed: %d\n", ret);
6796         }
6797 }
6798
6799 /**
6800  * i40e_send_version - update firmware with driver version
6801  * @pf: PF struct
6802  */
6803 static void i40e_send_version(struct i40e_pf *pf)
6804 {
6805         struct i40e_driver_version dv;
6806
6807         dv.major_version = DRV_VERSION_MAJOR;
6808         dv.minor_version = DRV_VERSION_MINOR;
6809         dv.build_version = DRV_VERSION_BUILD;
6810         dv.subbuild_version = 0;
6811         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6812         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6813 }
6814
6815 /**
6816  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6817  * @pf: board private structure
6818  * @reinit: if the Main VSI needs to re-initialized.
6819  **/
6820 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6821 {
6822         struct i40e_hw *hw = &pf->hw;
6823         u8 set_fc_aq_fail = 0;
6824         i40e_status ret;
6825         u32 val;
6826         u32 v;
6827
6828         /* Now we wait for GRST to settle out.
6829          * We don't have to delete the VEBs or VSIs from the hw switch
6830          * because the reset will make them disappear.
6831          */
6832         ret = i40e_pf_reset(hw);
6833         if (ret) {
6834                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6835                 set_bit(__I40E_RESET_FAILED, &pf->state);
6836                 goto clear_recovery;
6837         }
6838         pf->pfr_count++;
6839
6840         if (test_bit(__I40E_DOWN, &pf->state))
6841                 goto clear_recovery;
6842         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6843
6844         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6845         ret = i40e_init_adminq(&pf->hw);
6846         if (ret) {
6847                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6848                          i40e_stat_str(&pf->hw, ret),
6849                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6850                 goto clear_recovery;
6851         }
6852
6853         /* re-verify the eeprom if we just had an EMP reset */
6854         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6855                 i40e_verify_eeprom(pf);
6856
6857         i40e_clear_pxe_mode(hw);
6858         ret = i40e_get_capabilities(pf);
6859         if (ret)
6860                 goto end_core_reset;
6861
6862         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6863                                 hw->func_caps.num_rx_qp,
6864                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6865         if (ret) {
6866                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6867                 goto end_core_reset;
6868         }
6869         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6870         if (ret) {
6871                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6872                 goto end_core_reset;
6873         }
6874
6875 #ifdef CONFIG_I40E_DCB
6876         ret = i40e_init_pf_dcb(pf);
6877         if (ret) {
6878                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6879                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6880                 /* Continue without DCB enabled */
6881         }
6882 #endif /* CONFIG_I40E_DCB */
6883 #ifdef I40E_FCOE
6884         i40e_init_pf_fcoe(pf);
6885
6886 #endif
6887         /* do basic switch setup */
6888         ret = i40e_setup_pf_switch(pf, reinit);
6889         if (ret)
6890                 goto end_core_reset;
6891
6892         /* The driver only wants link up/down and module qualification
6893          * reports from firmware.  Note the negative logic.
6894          */
6895         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6896                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
6897                                          I40E_AQ_EVENT_MEDIA_NA |
6898                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
6899         if (ret)
6900                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6901                          i40e_stat_str(&pf->hw, ret),
6902                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6903
6904         /* make sure our flow control settings are restored */
6905         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6906         if (ret)
6907                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
6908                         i40e_stat_str(&pf->hw, ret),
6909                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6910
6911         /* Rebuild the VSIs and VEBs that existed before reset.
6912          * They are still in our local switch element arrays, so only
6913          * need to rebuild the switch model in the HW.
6914          *
6915          * If there were VEBs but the reconstitution failed, we'll try
6916          * try to recover minimal use by getting the basic PF VSI working.
6917          */
6918         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6919                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6920                 /* find the one VEB connected to the MAC, and find orphans */
6921                 for (v = 0; v < I40E_MAX_VEB; v++) {
6922                         if (!pf->veb[v])
6923                                 continue;
6924
6925                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6926                             pf->veb[v]->uplink_seid == 0) {
6927                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6928
6929                                 if (!ret)
6930                                         continue;
6931
6932                                 /* If Main VEB failed, we're in deep doodoo,
6933                                  * so give up rebuilding the switch and set up
6934                                  * for minimal rebuild of PF VSI.
6935                                  * If orphan failed, we'll report the error
6936                                  * but try to keep going.
6937                                  */
6938                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6939                                         dev_info(&pf->pdev->dev,
6940                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6941                                                  ret);
6942                                         pf->vsi[pf->lan_vsi]->uplink_seid
6943                                                                 = pf->mac_seid;
6944                                         break;
6945                                 } else if (pf->veb[v]->uplink_seid == 0) {
6946                                         dev_info(&pf->pdev->dev,
6947                                                  "rebuild of orphan VEB failed: %d\n",
6948                                                  ret);
6949                                 }
6950                         }
6951                 }
6952         }
6953
6954         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6955                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6956                 /* no VEB, so rebuild only the Main VSI */
6957                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6958                 if (ret) {
6959                         dev_info(&pf->pdev->dev,
6960                                  "rebuild of Main VSI failed: %d\n", ret);
6961                         goto end_core_reset;
6962                 }
6963         }
6964
6965         /* Reconfigure hardware for allowing smaller MSS in the case
6966          * of TSO, so that we avoid the MDD being fired and causing
6967          * a reset in the case of small MSS+TSO.
6968          */
6969 #define I40E_REG_MSS          0x000E64DC
6970 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
6971 #define I40E_64BYTE_MSS       0x400000
6972         val = rd32(hw, I40E_REG_MSS);
6973         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
6974                 val &= ~I40E_REG_MSS_MIN_MASK;
6975                 val |= I40E_64BYTE_MSS;
6976                 wr32(hw, I40E_REG_MSS, val);
6977         }
6978
6979         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
6980                 msleep(75);
6981                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6982                 if (ret)
6983                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6984                                  i40e_stat_str(&pf->hw, ret),
6985                                  i40e_aq_str(&pf->hw,
6986                                              pf->hw.aq.asq_last_status));
6987         }
6988         /* reinit the misc interrupt */
6989         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6990                 ret = i40e_setup_misc_vector(pf);
6991
6992         /* Add a filter to drop all Flow control frames from any VSI from being
6993          * transmitted. By doing so we stop a malicious VF from sending out
6994          * PAUSE or PFC frames and potentially controlling traffic for other
6995          * PF/VF VSIs.
6996          * The FW can still send Flow control frames if enabled.
6997          */
6998         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
6999                                                        pf->main_vsi_seid);
7000
7001         /* restart the VSIs that were rebuilt and running before the reset */
7002         i40e_pf_unquiesce_all_vsi(pf);
7003
7004         if (pf->num_alloc_vfs) {
7005                 for (v = 0; v < pf->num_alloc_vfs; v++)
7006                         i40e_reset_vf(&pf->vf[v], true);
7007         }
7008
7009         /* tell the firmware that we're starting */
7010         i40e_send_version(pf);
7011
7012 end_core_reset:
7013         clear_bit(__I40E_RESET_FAILED, &pf->state);
7014 clear_recovery:
7015         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
7016 }
7017
7018 /**
7019  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
7020  * @pf: board private structure
7021  *
7022  * Close up the VFs and other things in prep for a Core Reset,
7023  * then get ready to rebuild the world.
7024  **/
7025 static void i40e_handle_reset_warning(struct i40e_pf *pf)
7026 {
7027         i40e_prep_for_reset(pf);
7028         i40e_reset_and_rebuild(pf, false);
7029 }
7030
7031 /**
7032  * i40e_handle_mdd_event
7033  * @pf: pointer to the PF structure
7034  *
7035  * Called from the MDD irq handler to identify possibly malicious vfs
7036  **/
7037 static void i40e_handle_mdd_event(struct i40e_pf *pf)
7038 {
7039         struct i40e_hw *hw = &pf->hw;
7040         bool mdd_detected = false;
7041         bool pf_mdd_detected = false;
7042         struct i40e_vf *vf;
7043         u32 reg;
7044         int i;
7045
7046         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
7047                 return;
7048
7049         /* find what triggered the MDD event */
7050         reg = rd32(hw, I40E_GL_MDET_TX);
7051         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
7052                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
7053                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
7054                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
7055                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
7056                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
7057                                 I40E_GL_MDET_TX_EVENT_SHIFT;
7058                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
7059                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
7060                                 pf->hw.func_caps.base_queue;
7061                 if (netif_msg_tx_err(pf))
7062                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
7063                                  event, queue, pf_num, vf_num);
7064                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
7065                 mdd_detected = true;
7066         }
7067         reg = rd32(hw, I40E_GL_MDET_RX);
7068         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
7069                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
7070                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
7071                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
7072                                 I40E_GL_MDET_RX_EVENT_SHIFT;
7073                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
7074                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
7075                                 pf->hw.func_caps.base_queue;
7076                 if (netif_msg_rx_err(pf))
7077                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
7078                                  event, queue, func);
7079                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
7080                 mdd_detected = true;
7081         }
7082
7083         if (mdd_detected) {
7084                 reg = rd32(hw, I40E_PF_MDET_TX);
7085                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
7086                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
7087                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
7088                         pf_mdd_detected = true;
7089                 }
7090                 reg = rd32(hw, I40E_PF_MDET_RX);
7091                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
7092                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
7093                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
7094                         pf_mdd_detected = true;
7095                 }
7096                 /* Queue belongs to the PF, initiate a reset */
7097                 if (pf_mdd_detected) {
7098                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
7099                         i40e_service_event_schedule(pf);
7100                 }
7101         }
7102
7103         /* see if one of the VFs needs its hand slapped */
7104         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
7105                 vf = &(pf->vf[i]);
7106                 reg = rd32(hw, I40E_VP_MDET_TX(i));
7107                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
7108                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
7109                         vf->num_mdd_events++;
7110                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
7111                                  i);
7112                 }
7113
7114                 reg = rd32(hw, I40E_VP_MDET_RX(i));
7115                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
7116                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
7117                         vf->num_mdd_events++;
7118                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
7119                                  i);
7120                 }
7121
7122                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
7123                         dev_info(&pf->pdev->dev,
7124                                  "Too many MDD events on VF %d, disabled\n", i);
7125                         dev_info(&pf->pdev->dev,
7126                                  "Use PF Control I/F to re-enable the VF\n");
7127                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
7128                 }
7129         }
7130
7131         /* re-enable mdd interrupt cause */
7132         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
7133         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
7134         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
7135         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
7136         i40e_flush(hw);
7137 }
7138
7139 /**
7140  * i40e_sync_udp_filters_subtask - Sync the VSI filter list with HW
7141  * @pf: board private structure
7142  **/
7143 static void i40e_sync_udp_filters_subtask(struct i40e_pf *pf)
7144 {
7145         struct i40e_hw *hw = &pf->hw;
7146         i40e_status ret;
7147         __be16 port;
7148         int i;
7149
7150         if (!(pf->flags & I40E_FLAG_UDP_FILTER_SYNC))
7151                 return;
7152
7153         pf->flags &= ~I40E_FLAG_UDP_FILTER_SYNC;
7154
7155         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7156                 if (pf->pending_udp_bitmap & BIT_ULL(i)) {
7157                         pf->pending_udp_bitmap &= ~BIT_ULL(i);
7158                         port = pf->udp_ports[i].index;
7159                         if (port)
7160                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
7161                                                      pf->udp_ports[i].type,
7162                                                      NULL, NULL);
7163                         else
7164                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
7165
7166                         if (ret) {
7167                                 dev_dbg(&pf->pdev->dev,
7168                                         "%s %s port %d, index %d failed, err %s aq_err %s\n",
7169                                         pf->udp_ports[i].type ? "vxlan" : "geneve",
7170                                         port ? "add" : "delete",
7171                                         ntohs(port), i,
7172                                         i40e_stat_str(&pf->hw, ret),
7173                                         i40e_aq_str(&pf->hw,
7174                                                     pf->hw.aq.asq_last_status));
7175                                 pf->udp_ports[i].index = 0;
7176                         }
7177                 }
7178         }
7179 }
7180
7181 /**
7182  * i40e_service_task - Run the driver's async subtasks
7183  * @work: pointer to work_struct containing our data
7184  **/
7185 static void i40e_service_task(struct work_struct *work)
7186 {
7187         struct i40e_pf *pf = container_of(work,
7188                                           struct i40e_pf,
7189                                           service_task);
7190         unsigned long start_time = jiffies;
7191
7192         /* don't bother with service tasks if a reset is in progress */
7193         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7194                 i40e_service_event_complete(pf);
7195                 return;
7196         }
7197
7198         i40e_detect_recover_hung(pf);
7199         i40e_sync_filters_subtask(pf);
7200         i40e_reset_subtask(pf);
7201         i40e_handle_mdd_event(pf);
7202         i40e_vc_process_vflr_event(pf);
7203         i40e_watchdog_subtask(pf);
7204         i40e_fdir_reinit_subtask(pf);
7205         i40e_client_subtask(pf);
7206         i40e_sync_filters_subtask(pf);
7207         i40e_sync_udp_filters_subtask(pf);
7208         i40e_clean_adminq_subtask(pf);
7209
7210         i40e_service_event_complete(pf);
7211
7212         /* If the tasks have taken longer than one timer cycle or there
7213          * is more work to be done, reschedule the service task now
7214          * rather than wait for the timer to tick again.
7215          */
7216         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
7217             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
7218             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
7219             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
7220                 i40e_service_event_schedule(pf);
7221 }
7222
7223 /**
7224  * i40e_service_timer - timer callback
7225  * @data: pointer to PF struct
7226  **/
7227 static void i40e_service_timer(unsigned long data)
7228 {
7229         struct i40e_pf *pf = (struct i40e_pf *)data;
7230
7231         mod_timer(&pf->service_timer,
7232                   round_jiffies(jiffies + pf->service_timer_period));
7233         i40e_service_event_schedule(pf);
7234 }
7235
7236 /**
7237  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
7238  * @vsi: the VSI being configured
7239  **/
7240 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
7241 {
7242         struct i40e_pf *pf = vsi->back;
7243
7244         switch (vsi->type) {
7245         case I40E_VSI_MAIN:
7246                 vsi->alloc_queue_pairs = pf->num_lan_qps;
7247                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7248                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7249                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7250                         vsi->num_q_vectors = pf->num_lan_msix;
7251                 else
7252                         vsi->num_q_vectors = 1;
7253
7254                 break;
7255
7256         case I40E_VSI_FDIR:
7257                 vsi->alloc_queue_pairs = 1;
7258                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
7259                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7260                 vsi->num_q_vectors = pf->num_fdsb_msix;
7261                 break;
7262
7263         case I40E_VSI_VMDQ2:
7264                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
7265                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7266                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7267                 vsi->num_q_vectors = pf->num_vmdq_msix;
7268                 break;
7269
7270         case I40E_VSI_SRIOV:
7271                 vsi->alloc_queue_pairs = pf->num_vf_qps;
7272                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7273                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7274                 break;
7275
7276 #ifdef I40E_FCOE
7277         case I40E_VSI_FCOE:
7278                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
7279                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7280                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7281                 vsi->num_q_vectors = pf->num_fcoe_msix;
7282                 break;
7283
7284 #endif /* I40E_FCOE */
7285         default:
7286                 WARN_ON(1);
7287                 return -ENODATA;
7288         }
7289
7290         return 0;
7291 }
7292
7293 /**
7294  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
7295  * @type: VSI pointer
7296  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
7297  *
7298  * On error: returns error code (negative)
7299  * On success: returns 0
7300  **/
7301 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
7302 {
7303         int size;
7304         int ret = 0;
7305
7306         /* allocate memory for both Tx and Rx ring pointers */
7307         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
7308         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
7309         if (!vsi->tx_rings)
7310                 return -ENOMEM;
7311         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
7312
7313         if (alloc_qvectors) {
7314                 /* allocate memory for q_vector pointers */
7315                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
7316                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
7317                 if (!vsi->q_vectors) {
7318                         ret = -ENOMEM;
7319                         goto err_vectors;
7320                 }
7321         }
7322         return ret;
7323
7324 err_vectors:
7325         kfree(vsi->tx_rings);
7326         return ret;
7327 }
7328
7329 /**
7330  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
7331  * @pf: board private structure
7332  * @type: type of VSI
7333  *
7334  * On error: returns error code (negative)
7335  * On success: returns vsi index in PF (positive)
7336  **/
7337 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7338 {
7339         int ret = -ENODEV;
7340         struct i40e_vsi *vsi;
7341         int vsi_idx;
7342         int i;
7343
7344         /* Need to protect the allocation of the VSIs at the PF level */
7345         mutex_lock(&pf->switch_mutex);
7346
7347         /* VSI list may be fragmented if VSI creation/destruction has
7348          * been happening.  We can afford to do a quick scan to look
7349          * for any free VSIs in the list.
7350          *
7351          * find next empty vsi slot, looping back around if necessary
7352          */
7353         i = pf->next_vsi;
7354         while (i < pf->num_alloc_vsi && pf->vsi[i])
7355                 i++;
7356         if (i >= pf->num_alloc_vsi) {
7357                 i = 0;
7358                 while (i < pf->next_vsi && pf->vsi[i])
7359                         i++;
7360         }
7361
7362         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7363                 vsi_idx = i;             /* Found one! */
7364         } else {
7365                 ret = -ENODEV;
7366                 goto unlock_pf;  /* out of VSI slots! */
7367         }
7368         pf->next_vsi = ++i;
7369
7370         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7371         if (!vsi) {
7372                 ret = -ENOMEM;
7373                 goto unlock_pf;
7374         }
7375         vsi->type = type;
7376         vsi->back = pf;
7377         set_bit(__I40E_DOWN, &vsi->state);
7378         vsi->flags = 0;
7379         vsi->idx = vsi_idx;
7380         vsi->int_rate_limit = 0;
7381         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7382                                 pf->rss_table_size : 64;
7383         vsi->netdev_registered = false;
7384         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7385         INIT_LIST_HEAD(&vsi->mac_filter_list);
7386         vsi->irqs_ready = false;
7387
7388         ret = i40e_set_num_rings_in_vsi(vsi);
7389         if (ret)
7390                 goto err_rings;
7391
7392         ret = i40e_vsi_alloc_arrays(vsi, true);
7393         if (ret)
7394                 goto err_rings;
7395
7396         /* Setup default MSIX irq handler for VSI */
7397         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7398
7399         /* Initialize VSI lock */
7400         spin_lock_init(&vsi->mac_filter_list_lock);
7401         pf->vsi[vsi_idx] = vsi;
7402         ret = vsi_idx;
7403         goto unlock_pf;
7404
7405 err_rings:
7406         pf->next_vsi = i - 1;
7407         kfree(vsi);
7408 unlock_pf:
7409         mutex_unlock(&pf->switch_mutex);
7410         return ret;
7411 }
7412
7413 /**
7414  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7415  * @type: VSI pointer
7416  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7417  *
7418  * On error: returns error code (negative)
7419  * On success: returns 0
7420  **/
7421 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7422 {
7423         /* free the ring and vector containers */
7424         if (free_qvectors) {
7425                 kfree(vsi->q_vectors);
7426                 vsi->q_vectors = NULL;
7427         }
7428         kfree(vsi->tx_rings);
7429         vsi->tx_rings = NULL;
7430         vsi->rx_rings = NULL;
7431 }
7432
7433 /**
7434  * i40e_clear_rss_config_user - clear the user configured RSS hash keys
7435  * and lookup table
7436  * @vsi: Pointer to VSI structure
7437  */
7438 static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
7439 {
7440         if (!vsi)
7441                 return;
7442
7443         kfree(vsi->rss_hkey_user);
7444         vsi->rss_hkey_user = NULL;
7445
7446         kfree(vsi->rss_lut_user);
7447         vsi->rss_lut_user = NULL;
7448 }
7449
7450 /**
7451  * i40e_vsi_clear - Deallocate the VSI provided
7452  * @vsi: the VSI being un-configured
7453  **/
7454 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7455 {
7456         struct i40e_pf *pf;
7457
7458         if (!vsi)
7459                 return 0;
7460
7461         if (!vsi->back)
7462                 goto free_vsi;
7463         pf = vsi->back;
7464
7465         mutex_lock(&pf->switch_mutex);
7466         if (!pf->vsi[vsi->idx]) {
7467                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7468                         vsi->idx, vsi->idx, vsi, vsi->type);
7469                 goto unlock_vsi;
7470         }
7471
7472         if (pf->vsi[vsi->idx] != vsi) {
7473                 dev_err(&pf->pdev->dev,
7474                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7475                         pf->vsi[vsi->idx]->idx,
7476                         pf->vsi[vsi->idx],
7477                         pf->vsi[vsi->idx]->type,
7478                         vsi->idx, vsi, vsi->type);
7479                 goto unlock_vsi;
7480         }
7481
7482         /* updates the PF for this cleared vsi */
7483         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7484         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7485
7486         i40e_vsi_free_arrays(vsi, true);
7487         i40e_clear_rss_config_user(vsi);
7488
7489         pf->vsi[vsi->idx] = NULL;
7490         if (vsi->idx < pf->next_vsi)
7491                 pf->next_vsi = vsi->idx;
7492
7493 unlock_vsi:
7494         mutex_unlock(&pf->switch_mutex);
7495 free_vsi:
7496         kfree(vsi);
7497
7498         return 0;
7499 }
7500
7501 /**
7502  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7503  * @vsi: the VSI being cleaned
7504  **/
7505 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7506 {
7507         int i;
7508
7509         if (vsi->tx_rings && vsi->tx_rings[0]) {
7510                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7511                         kfree_rcu(vsi->tx_rings[i], rcu);
7512                         vsi->tx_rings[i] = NULL;
7513                         vsi->rx_rings[i] = NULL;
7514                 }
7515         }
7516 }
7517
7518 /**
7519  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7520  * @vsi: the VSI being configured
7521  **/
7522 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7523 {
7524         struct i40e_ring *tx_ring, *rx_ring;
7525         struct i40e_pf *pf = vsi->back;
7526         int i;
7527
7528         /* Set basic values in the rings to be used later during open() */
7529         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7530                 /* allocate space for both Tx and Rx in one shot */
7531                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7532                 if (!tx_ring)
7533                         goto err_out;
7534
7535                 tx_ring->queue_index = i;
7536                 tx_ring->reg_idx = vsi->base_queue + i;
7537                 tx_ring->ring_active = false;
7538                 tx_ring->vsi = vsi;
7539                 tx_ring->netdev = vsi->netdev;
7540                 tx_ring->dev = &pf->pdev->dev;
7541                 tx_ring->count = vsi->num_desc;
7542                 tx_ring->size = 0;
7543                 tx_ring->dcb_tc = 0;
7544                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7545                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7546                 tx_ring->tx_itr_setting = pf->tx_itr_default;
7547                 vsi->tx_rings[i] = tx_ring;
7548
7549                 rx_ring = &tx_ring[1];
7550                 rx_ring->queue_index = i;
7551                 rx_ring->reg_idx = vsi->base_queue + i;
7552                 rx_ring->ring_active = false;
7553                 rx_ring->vsi = vsi;
7554                 rx_ring->netdev = vsi->netdev;
7555                 rx_ring->dev = &pf->pdev->dev;
7556                 rx_ring->count = vsi->num_desc;
7557                 rx_ring->size = 0;
7558                 rx_ring->dcb_tc = 0;
7559                 rx_ring->rx_itr_setting = pf->rx_itr_default;
7560                 vsi->rx_rings[i] = rx_ring;
7561         }
7562
7563         return 0;
7564
7565 err_out:
7566         i40e_vsi_clear_rings(vsi);
7567         return -ENOMEM;
7568 }
7569
7570 /**
7571  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7572  * @pf: board private structure
7573  * @vectors: the number of MSI-X vectors to request
7574  *
7575  * Returns the number of vectors reserved, or error
7576  **/
7577 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7578 {
7579         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7580                                         I40E_MIN_MSIX, vectors);
7581         if (vectors < 0) {
7582                 dev_info(&pf->pdev->dev,
7583                          "MSI-X vector reservation failed: %d\n", vectors);
7584                 vectors = 0;
7585         }
7586
7587         return vectors;
7588 }
7589
7590 /**
7591  * i40e_init_msix - Setup the MSIX capability
7592  * @pf: board private structure
7593  *
7594  * Work with the OS to set up the MSIX vectors needed.
7595  *
7596  * Returns the number of vectors reserved or negative on failure
7597  **/
7598 static int i40e_init_msix(struct i40e_pf *pf)
7599 {
7600         struct i40e_hw *hw = &pf->hw;
7601         int vectors_left;
7602         int v_budget, i;
7603         int v_actual;
7604         int iwarp_requested = 0;
7605
7606         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7607                 return -ENODEV;
7608
7609         /* The number of vectors we'll request will be comprised of:
7610          *   - Add 1 for "other" cause for Admin Queue events, etc.
7611          *   - The number of LAN queue pairs
7612          *      - Queues being used for RSS.
7613          *              We don't need as many as max_rss_size vectors.
7614          *              use rss_size instead in the calculation since that
7615          *              is governed by number of cpus in the system.
7616          *      - assumes symmetric Tx/Rx pairing
7617          *   - The number of VMDq pairs
7618          *   - The CPU count within the NUMA node if iWARP is enabled
7619 #ifdef I40E_FCOE
7620          *   - The number of FCOE qps.
7621 #endif
7622          * Once we count this up, try the request.
7623          *
7624          * If we can't get what we want, we'll simplify to nearly nothing
7625          * and try again.  If that still fails, we punt.
7626          */
7627         vectors_left = hw->func_caps.num_msix_vectors;
7628         v_budget = 0;
7629
7630         /* reserve one vector for miscellaneous handler */
7631         if (vectors_left) {
7632                 v_budget++;
7633                 vectors_left--;
7634         }
7635
7636         /* reserve vectors for the main PF traffic queues */
7637         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7638         vectors_left -= pf->num_lan_msix;
7639         v_budget += pf->num_lan_msix;
7640
7641         /* reserve one vector for sideband flow director */
7642         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7643                 if (vectors_left) {
7644                         pf->num_fdsb_msix = 1;
7645                         v_budget++;
7646                         vectors_left--;
7647                 } else {
7648                         pf->num_fdsb_msix = 0;
7649                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7650                 }
7651         }
7652
7653 #ifdef I40E_FCOE
7654         /* can we reserve enough for FCoE? */
7655         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7656                 if (!vectors_left)
7657                         pf->num_fcoe_msix = 0;
7658                 else if (vectors_left >= pf->num_fcoe_qps)
7659                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7660                 else
7661                         pf->num_fcoe_msix = 1;
7662                 v_budget += pf->num_fcoe_msix;
7663                 vectors_left -= pf->num_fcoe_msix;
7664         }
7665
7666 #endif
7667         /* can we reserve enough for iWARP? */
7668         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7669                 if (!vectors_left)
7670                         pf->num_iwarp_msix = 0;
7671                 else if (vectors_left < pf->num_iwarp_msix)
7672                         pf->num_iwarp_msix = 1;
7673                 v_budget += pf->num_iwarp_msix;
7674                 vectors_left -= pf->num_iwarp_msix;
7675         }
7676
7677         /* any vectors left over go for VMDq support */
7678         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7679                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7680                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7681
7682                 /* if we're short on vectors for what's desired, we limit
7683                  * the queues per vmdq.  If this is still more than are
7684                  * available, the user will need to change the number of
7685                  * queues/vectors used by the PF later with the ethtool
7686                  * channels command
7687                  */
7688                 if (vmdq_vecs < vmdq_vecs_wanted)
7689                         pf->num_vmdq_qps = 1;
7690                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7691
7692                 v_budget += vmdq_vecs;
7693                 vectors_left -= vmdq_vecs;
7694         }
7695
7696         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7697                                    GFP_KERNEL);
7698         if (!pf->msix_entries)
7699                 return -ENOMEM;
7700
7701         for (i = 0; i < v_budget; i++)
7702                 pf->msix_entries[i].entry = i;
7703         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7704
7705         if (v_actual != v_budget) {
7706                 /* If we have limited resources, we will start with no vectors
7707                  * for the special features and then allocate vectors to some
7708                  * of these features based on the policy and at the end disable
7709                  * the features that did not get any vectors.
7710                  */
7711                 iwarp_requested = pf->num_iwarp_msix;
7712                 pf->num_iwarp_msix = 0;
7713 #ifdef I40E_FCOE
7714                 pf->num_fcoe_qps = 0;
7715                 pf->num_fcoe_msix = 0;
7716 #endif
7717                 pf->num_vmdq_msix = 0;
7718         }
7719
7720         if (v_actual < I40E_MIN_MSIX) {
7721                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7722                 kfree(pf->msix_entries);
7723                 pf->msix_entries = NULL;
7724                 return -ENODEV;
7725
7726         } else if (v_actual == I40E_MIN_MSIX) {
7727                 /* Adjust for minimal MSIX use */
7728                 pf->num_vmdq_vsis = 0;
7729                 pf->num_vmdq_qps = 0;
7730                 pf->num_lan_qps = 1;
7731                 pf->num_lan_msix = 1;
7732
7733         } else if (v_actual != v_budget) {
7734                 int vec;
7735
7736                 /* reserve the misc vector */
7737                 vec = v_actual - 1;
7738
7739                 /* Scale vector usage down */
7740                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7741                 pf->num_vmdq_vsis = 1;
7742                 pf->num_vmdq_qps = 1;
7743                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7744
7745                 /* partition out the remaining vectors */
7746                 switch (vec) {
7747                 case 2:
7748                         pf->num_lan_msix = 1;
7749                         break;
7750                 case 3:
7751                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7752                                 pf->num_lan_msix = 1;
7753                                 pf->num_iwarp_msix = 1;
7754                         } else {
7755                                 pf->num_lan_msix = 2;
7756                         }
7757 #ifdef I40E_FCOE
7758                         /* give one vector to FCoE */
7759                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7760                                 pf->num_lan_msix = 1;
7761                                 pf->num_fcoe_msix = 1;
7762                         }
7763 #endif
7764                         break;
7765                 default:
7766                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7767                                 pf->num_iwarp_msix = min_t(int, (vec / 3),
7768                                                  iwarp_requested);
7769                                 pf->num_vmdq_vsis = min_t(int, (vec / 3),
7770                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7771                         } else {
7772                                 pf->num_vmdq_vsis = min_t(int, (vec / 2),
7773                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7774                         }
7775                         pf->num_lan_msix = min_t(int,
7776                                (vec - (pf->num_iwarp_msix + pf->num_vmdq_vsis)),
7777                                                               pf->num_lan_msix);
7778 #ifdef I40E_FCOE
7779                         /* give one vector to FCoE */
7780                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7781                                 pf->num_fcoe_msix = 1;
7782                                 vec--;
7783                         }
7784 #endif
7785                         break;
7786                 }
7787         }
7788
7789         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7790             (pf->num_vmdq_msix == 0)) {
7791                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7792                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7793         }
7794
7795         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
7796             (pf->num_iwarp_msix == 0)) {
7797                 dev_info(&pf->pdev->dev, "IWARP disabled, not enough MSI-X vectors\n");
7798                 pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
7799         }
7800 #ifdef I40E_FCOE
7801
7802         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7803                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7804                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7805         }
7806 #endif
7807         return v_actual;
7808 }
7809
7810 /**
7811  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7812  * @vsi: the VSI being configured
7813  * @v_idx: index of the vector in the vsi struct
7814  * @cpu: cpu to be used on affinity_mask
7815  *
7816  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7817  **/
7818 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx, int cpu)
7819 {
7820         struct i40e_q_vector *q_vector;
7821
7822         /* allocate q_vector */
7823         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7824         if (!q_vector)
7825                 return -ENOMEM;
7826
7827         q_vector->vsi = vsi;
7828         q_vector->v_idx = v_idx;
7829         cpumask_set_cpu(cpu, &q_vector->affinity_mask);
7830
7831         if (vsi->netdev)
7832                 netif_napi_add(vsi->netdev, &q_vector->napi,
7833                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7834
7835         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7836         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7837
7838         /* tie q_vector and vsi together */
7839         vsi->q_vectors[v_idx] = q_vector;
7840
7841         return 0;
7842 }
7843
7844 /**
7845  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7846  * @vsi: the VSI being configured
7847  *
7848  * We allocate one q_vector per queue interrupt.  If allocation fails we
7849  * return -ENOMEM.
7850  **/
7851 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7852 {
7853         struct i40e_pf *pf = vsi->back;
7854         int err, v_idx, num_q_vectors, current_cpu;
7855
7856         /* if not MSIX, give the one vector only to the LAN VSI */
7857         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7858                 num_q_vectors = vsi->num_q_vectors;
7859         else if (vsi == pf->vsi[pf->lan_vsi])
7860                 num_q_vectors = 1;
7861         else
7862                 return -EINVAL;
7863
7864         current_cpu = cpumask_first(cpu_online_mask);
7865
7866         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7867                 err = i40e_vsi_alloc_q_vector(vsi, v_idx, current_cpu);
7868                 if (err)
7869                         goto err_out;
7870                 current_cpu = cpumask_next(current_cpu, cpu_online_mask);
7871                 if (unlikely(current_cpu >= nr_cpu_ids))
7872                         current_cpu = cpumask_first(cpu_online_mask);
7873         }
7874
7875         return 0;
7876
7877 err_out:
7878         while (v_idx--)
7879                 i40e_free_q_vector(vsi, v_idx);
7880
7881         return err;
7882 }
7883
7884 /**
7885  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7886  * @pf: board private structure to initialize
7887  **/
7888 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7889 {
7890         int vectors = 0;
7891         ssize_t size;
7892
7893         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7894                 vectors = i40e_init_msix(pf);
7895                 if (vectors < 0) {
7896                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7897                                        I40E_FLAG_IWARP_ENABLED  |
7898 #ifdef I40E_FCOE
7899                                        I40E_FLAG_FCOE_ENABLED   |
7900 #endif
7901                                        I40E_FLAG_RSS_ENABLED    |
7902                                        I40E_FLAG_DCB_CAPABLE    |
7903                                        I40E_FLAG_DCB_ENABLED    |
7904                                        I40E_FLAG_SRIOV_ENABLED  |
7905                                        I40E_FLAG_FD_SB_ENABLED  |
7906                                        I40E_FLAG_FD_ATR_ENABLED |
7907                                        I40E_FLAG_VMDQ_ENABLED);
7908
7909                         /* rework the queue expectations without MSIX */
7910                         i40e_determine_queue_usage(pf);
7911                 }
7912         }
7913
7914         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7915             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7916                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7917                 vectors = pci_enable_msi(pf->pdev);
7918                 if (vectors < 0) {
7919                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7920                                  vectors);
7921                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7922                 }
7923                 vectors = 1;  /* one MSI or Legacy vector */
7924         }
7925
7926         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7927                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7928
7929         /* set up vector assignment tracking */
7930         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7931         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7932         if (!pf->irq_pile) {
7933                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7934                 return -ENOMEM;
7935         }
7936         pf->irq_pile->num_entries = vectors;
7937         pf->irq_pile->search_hint = 0;
7938
7939         /* track first vector for misc interrupts, ignore return */
7940         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7941
7942         return 0;
7943 }
7944
7945 /**
7946  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7947  * @pf: board private structure
7948  *
7949  * This sets up the handler for MSIX 0, which is used to manage the
7950  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7951  * when in MSI or Legacy interrupt mode.
7952  **/
7953 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7954 {
7955         struct i40e_hw *hw = &pf->hw;
7956         int err = 0;
7957
7958         /* Only request the irq if this is the first time through, and
7959          * not when we're rebuilding after a Reset
7960          */
7961         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7962                 err = request_irq(pf->msix_entries[0].vector,
7963                                   i40e_intr, 0, pf->int_name, pf);
7964                 if (err) {
7965                         dev_info(&pf->pdev->dev,
7966                                  "request_irq for %s failed: %d\n",
7967                                  pf->int_name, err);
7968                         return -EFAULT;
7969                 }
7970         }
7971
7972         i40e_enable_misc_int_causes(pf);
7973
7974         /* associate no queues to the misc vector */
7975         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7976         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7977
7978         i40e_flush(hw);
7979
7980         i40e_irq_dynamic_enable_icr0(pf, true);
7981
7982         return err;
7983 }
7984
7985 /**
7986  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7987  * @vsi: vsi structure
7988  * @seed: RSS hash seed
7989  **/
7990 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
7991                               u8 *lut, u16 lut_size)
7992 {
7993         struct i40e_aqc_get_set_rss_key_data rss_key;
7994         struct i40e_pf *pf = vsi->back;
7995         struct i40e_hw *hw = &pf->hw;
7996         bool pf_lut = false;
7997         u8 *rss_lut;
7998         int ret, i;
7999
8000         memcpy(&rss_key, seed, sizeof(rss_key));
8001
8002         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
8003         if (!rss_lut)
8004                 return -ENOMEM;
8005
8006         /* Populate the LUT with max no. of queues in round robin fashion */
8007         for (i = 0; i < vsi->rss_table_size; i++)
8008                 rss_lut[i] = i % vsi->rss_size;
8009
8010         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
8011         if (ret) {
8012                 dev_info(&pf->pdev->dev,
8013                          "Cannot set RSS key, err %s aq_err %s\n",
8014                          i40e_stat_str(&pf->hw, ret),
8015                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
8016                 goto config_rss_aq_out;
8017         }
8018
8019         if (vsi->type == I40E_VSI_MAIN)
8020                 pf_lut = true;
8021
8022         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
8023                                   vsi->rss_table_size);
8024         if (ret)
8025                 dev_info(&pf->pdev->dev,
8026                          "Cannot set RSS lut, err %s aq_err %s\n",
8027                          i40e_stat_str(&pf->hw, ret),
8028                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
8029
8030 config_rss_aq_out:
8031         kfree(rss_lut);
8032         return ret;
8033 }
8034
8035 /**
8036  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
8037  * @vsi: VSI structure
8038  **/
8039 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
8040 {
8041         u8 seed[I40E_HKEY_ARRAY_SIZE];
8042         struct i40e_pf *pf = vsi->back;
8043         u8 *lut;
8044         int ret;
8045
8046         if (!(pf->flags & I40E_FLAG_RSS_AQ_CAPABLE))
8047                 return 0;
8048
8049         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8050         if (!lut)
8051                 return -ENOMEM;
8052
8053         i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8054         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8055         vsi->rss_size = min_t(int, pf->alloc_rss_size, vsi->num_queue_pairs);
8056         ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
8057         kfree(lut);
8058
8059         return ret;
8060 }
8061
8062 /**
8063  * i40e_get_rss_aq - Get RSS keys and lut by using AQ commands
8064  * @vsi: Pointer to vsi structure
8065  * @seed: Buffter to store the hash keys
8066  * @lut: Buffer to store the lookup table entries
8067  * @lut_size: Size of buffer to store the lookup table entries
8068  *
8069  * Return 0 on success, negative on failure
8070  */
8071 static int i40e_get_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
8072                            u8 *lut, u16 lut_size)
8073 {
8074         struct i40e_pf *pf = vsi->back;
8075         struct i40e_hw *hw = &pf->hw;
8076         int ret = 0;
8077
8078         if (seed) {
8079                 ret = i40e_aq_get_rss_key(hw, vsi->id,
8080                         (struct i40e_aqc_get_set_rss_key_data *)seed);
8081                 if (ret) {
8082                         dev_info(&pf->pdev->dev,
8083                                  "Cannot get RSS key, err %s aq_err %s\n",
8084                                  i40e_stat_str(&pf->hw, ret),
8085                                  i40e_aq_str(&pf->hw,
8086                                              pf->hw.aq.asq_last_status));
8087                         return ret;
8088                 }
8089         }
8090
8091         if (lut) {
8092                 bool pf_lut = vsi->type == I40E_VSI_MAIN ? true : false;
8093
8094                 ret = i40e_aq_get_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
8095                 if (ret) {
8096                         dev_info(&pf->pdev->dev,
8097                                  "Cannot get RSS lut, err %s aq_err %s\n",
8098                                  i40e_stat_str(&pf->hw, ret),
8099                                  i40e_aq_str(&pf->hw,
8100                                              pf->hw.aq.asq_last_status));
8101                         return ret;
8102                 }
8103         }
8104
8105         return ret;
8106 }
8107
8108 /**
8109  * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
8110  * @vsi: Pointer to vsi structure
8111  * @seed: RSS hash seed
8112  * @lut: Lookup table
8113  * @lut_size: Lookup table size
8114  *
8115  * Returns 0 on success, negative on failure
8116  **/
8117 static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
8118                                const u8 *lut, u16 lut_size)
8119 {
8120         struct i40e_pf *pf = vsi->back;
8121         struct i40e_hw *hw = &pf->hw;
8122         u16 vf_id = vsi->vf_id;
8123         u8 i;
8124
8125         /* Fill out hash function seed */
8126         if (seed) {
8127                 u32 *seed_dw = (u32 *)seed;
8128
8129                 if (vsi->type == I40E_VSI_MAIN) {
8130                         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8131                                 i40e_write_rx_ctl(hw, I40E_PFQF_HKEY(i),
8132                                                   seed_dw[i]);
8133                 } else if (vsi->type == I40E_VSI_SRIOV) {
8134                         for (i = 0; i <= I40E_VFQF_HKEY1_MAX_INDEX; i++)
8135                                 i40e_write_rx_ctl(hw,
8136                                                   I40E_VFQF_HKEY1(i, vf_id),
8137                                                   seed_dw[i]);
8138                 } else {
8139                         dev_err(&pf->pdev->dev, "Cannot set RSS seed - invalid VSI type\n");
8140                 }
8141         }
8142
8143         if (lut) {
8144                 u32 *lut_dw = (u32 *)lut;
8145
8146                 if (vsi->type == I40E_VSI_MAIN) {
8147                         if (lut_size != I40E_HLUT_ARRAY_SIZE)
8148                                 return -EINVAL;
8149                         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8150                                 wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
8151                 } else if (vsi->type == I40E_VSI_SRIOV) {
8152                         if (lut_size != I40E_VF_HLUT_ARRAY_SIZE)
8153                                 return -EINVAL;
8154                         for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
8155                                 i40e_write_rx_ctl(hw,
8156                                                   I40E_VFQF_HLUT1(i, vf_id),
8157                                                   lut_dw[i]);
8158                 } else {
8159                         dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
8160                 }
8161         }
8162         i40e_flush(hw);
8163
8164         return 0;
8165 }
8166
8167 /**
8168  * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
8169  * @vsi: Pointer to VSI structure
8170  * @seed: Buffer to store the keys
8171  * @lut: Buffer to store the lookup table entries
8172  * @lut_size: Size of buffer to store the lookup table entries
8173  *
8174  * Returns 0 on success, negative on failure
8175  */
8176 static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
8177                             u8 *lut, u16 lut_size)
8178 {
8179         struct i40e_pf *pf = vsi->back;
8180         struct i40e_hw *hw = &pf->hw;
8181         u16 i;
8182
8183         if (seed) {
8184                 u32 *seed_dw = (u32 *)seed;
8185
8186                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8187                         seed_dw[i] = i40e_read_rx_ctl(hw, I40E_PFQF_HKEY(i));
8188         }
8189         if (lut) {
8190                 u32 *lut_dw = (u32 *)lut;
8191
8192                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
8193                         return -EINVAL;
8194                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8195                         lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
8196         }
8197
8198         return 0;
8199 }
8200
8201 /**
8202  * i40e_config_rss - Configure RSS keys and lut
8203  * @vsi: Pointer to VSI structure
8204  * @seed: RSS hash seed
8205  * @lut: Lookup table
8206  * @lut_size: Lookup table size
8207  *
8208  * Returns 0 on success, negative on failure
8209  */
8210 int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8211 {
8212         struct i40e_pf *pf = vsi->back;
8213
8214         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8215                 return i40e_config_rss_aq(vsi, seed, lut, lut_size);
8216         else
8217                 return i40e_config_rss_reg(vsi, seed, lut, lut_size);
8218 }
8219
8220 /**
8221  * i40e_get_rss - Get RSS keys and lut
8222  * @vsi: Pointer to VSI structure
8223  * @seed: Buffer to store the keys
8224  * @lut: Buffer to store the lookup table entries
8225  * lut_size: Size of buffer to store the lookup table entries
8226  *
8227  * Returns 0 on success, negative on failure
8228  */
8229 int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8230 {
8231         struct i40e_pf *pf = vsi->back;
8232
8233         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8234                 return i40e_get_rss_aq(vsi, seed, lut, lut_size);
8235         else
8236                 return i40e_get_rss_reg(vsi, seed, lut, lut_size);
8237 }
8238
8239 /**
8240  * i40e_fill_rss_lut - Fill the RSS lookup table with default values
8241  * @pf: Pointer to board private structure
8242  * @lut: Lookup table
8243  * @rss_table_size: Lookup table size
8244  * @rss_size: Range of queue number for hashing
8245  */
8246 static void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
8247                               u16 rss_table_size, u16 rss_size)
8248 {
8249         u16 i;
8250
8251         for (i = 0; i < rss_table_size; i++)
8252                 lut[i] = i % rss_size;
8253 }
8254
8255 /**
8256  * i40e_pf_config_rss - Prepare for RSS if used
8257  * @pf: board private structure
8258  **/
8259 static int i40e_pf_config_rss(struct i40e_pf *pf)
8260 {
8261         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8262         u8 seed[I40E_HKEY_ARRAY_SIZE];
8263         u8 *lut;
8264         struct i40e_hw *hw = &pf->hw;
8265         u32 reg_val;
8266         u64 hena;
8267         int ret;
8268
8269         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
8270         hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
8271                 ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
8272         hena |= i40e_pf_get_default_rss_hena(pf);
8273
8274         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
8275         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
8276
8277         /* Determine the RSS table size based on the hardware capabilities */
8278         reg_val = i40e_read_rx_ctl(hw, I40E_PFQF_CTL_0);
8279         reg_val = (pf->rss_table_size == 512) ?
8280                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
8281                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
8282         i40e_write_rx_ctl(hw, I40E_PFQF_CTL_0, reg_val);
8283
8284         /* Determine the RSS size of the VSI */
8285         if (!vsi->rss_size)
8286                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8287                                       vsi->num_queue_pairs);
8288
8289         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8290         if (!lut)
8291                 return -ENOMEM;
8292
8293         /* Use user configured lut if there is one, otherwise use default */
8294         if (vsi->rss_lut_user)
8295                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8296         else
8297                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8298
8299         /* Use user configured hash key if there is one, otherwise
8300          * use default.
8301          */
8302         if (vsi->rss_hkey_user)
8303                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8304         else
8305                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8306         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
8307         kfree(lut);
8308
8309         return ret;
8310 }
8311
8312 /**
8313  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
8314  * @pf: board private structure
8315  * @queue_count: the requested queue count for rss.
8316  *
8317  * returns 0 if rss is not enabled, if enabled returns the final rss queue
8318  * count which may be different from the requested queue count.
8319  **/
8320 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
8321 {
8322         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8323         int new_rss_size;
8324
8325         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
8326                 return 0;
8327
8328         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
8329
8330         if (queue_count != vsi->num_queue_pairs) {
8331                 vsi->req_queue_pairs = queue_count;
8332                 i40e_prep_for_reset(pf);
8333
8334                 pf->alloc_rss_size = new_rss_size;
8335
8336                 i40e_reset_and_rebuild(pf, true);
8337
8338                 /* Discard the user configured hash keys and lut, if less
8339                  * queues are enabled.
8340                  */
8341                 if (queue_count < vsi->rss_size) {
8342                         i40e_clear_rss_config_user(vsi);
8343                         dev_dbg(&pf->pdev->dev,
8344                                 "discard user configured hash keys and lut\n");
8345                 }
8346
8347                 /* Reset vsi->rss_size, as number of enabled queues changed */
8348                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8349                                       vsi->num_queue_pairs);
8350
8351                 i40e_pf_config_rss(pf);
8352         }
8353         dev_info(&pf->pdev->dev, "RSS count/HW max RSS count:  %d/%d\n",
8354                  pf->alloc_rss_size, pf->rss_size_max);
8355         return pf->alloc_rss_size;
8356 }
8357
8358 /**
8359  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
8360  * @pf: board private structure
8361  **/
8362 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
8363 {
8364         i40e_status status;
8365         bool min_valid, max_valid;
8366         u32 max_bw, min_bw;
8367
8368         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
8369                                            &min_valid, &max_valid);
8370
8371         if (!status) {
8372                 if (min_valid)
8373                         pf->npar_min_bw = min_bw;
8374                 if (max_valid)
8375                         pf->npar_max_bw = max_bw;
8376         }
8377
8378         return status;
8379 }
8380
8381 /**
8382  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
8383  * @pf: board private structure
8384  **/
8385 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
8386 {
8387         struct i40e_aqc_configure_partition_bw_data bw_data;
8388         i40e_status status;
8389
8390         /* Set the valid bit for this PF */
8391         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
8392         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
8393         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
8394
8395         /* Set the new bandwidths */
8396         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
8397
8398         return status;
8399 }
8400
8401 /**
8402  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
8403  * @pf: board private structure
8404  **/
8405 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
8406 {
8407         /* Commit temporary BW setting to permanent NVM image */
8408         enum i40e_admin_queue_err last_aq_status;
8409         i40e_status ret;
8410         u16 nvm_word;
8411
8412         if (pf->hw.partition_id != 1) {
8413                 dev_info(&pf->pdev->dev,
8414                          "Commit BW only works on partition 1! This is partition %d",
8415                          pf->hw.partition_id);
8416                 ret = I40E_NOT_SUPPORTED;
8417                 goto bw_commit_out;
8418         }
8419
8420         /* Acquire NVM for read access */
8421         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
8422         last_aq_status = pf->hw.aq.asq_last_status;
8423         if (ret) {
8424                 dev_info(&pf->pdev->dev,
8425                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
8426                          i40e_stat_str(&pf->hw, ret),
8427                          i40e_aq_str(&pf->hw, last_aq_status));
8428                 goto bw_commit_out;
8429         }
8430
8431         /* Read word 0x10 of NVM - SW compatibility word 1 */
8432         ret = i40e_aq_read_nvm(&pf->hw,
8433                                I40E_SR_NVM_CONTROL_WORD,
8434                                0x10, sizeof(nvm_word), &nvm_word,
8435                                false, NULL);
8436         /* Save off last admin queue command status before releasing
8437          * the NVM
8438          */
8439         last_aq_status = pf->hw.aq.asq_last_status;
8440         i40e_release_nvm(&pf->hw);
8441         if (ret) {
8442                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
8443                          i40e_stat_str(&pf->hw, ret),
8444                          i40e_aq_str(&pf->hw, last_aq_status));
8445                 goto bw_commit_out;
8446         }
8447
8448         /* Wait a bit for NVM release to complete */
8449         msleep(50);
8450
8451         /* Acquire NVM for write access */
8452         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
8453         last_aq_status = pf->hw.aq.asq_last_status;
8454         if (ret) {
8455                 dev_info(&pf->pdev->dev,
8456                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
8457                          i40e_stat_str(&pf->hw, ret),
8458                          i40e_aq_str(&pf->hw, last_aq_status));
8459                 goto bw_commit_out;
8460         }
8461         /* Write it back out unchanged to initiate update NVM,
8462          * which will force a write of the shadow (alt) RAM to
8463          * the NVM - thus storing the bandwidth values permanently.
8464          */
8465         ret = i40e_aq_update_nvm(&pf->hw,
8466                                  I40E_SR_NVM_CONTROL_WORD,
8467                                  0x10, sizeof(nvm_word),
8468                                  &nvm_word, true, NULL);
8469         /* Save off last admin queue command status before releasing
8470          * the NVM
8471          */
8472         last_aq_status = pf->hw.aq.asq_last_status;
8473         i40e_release_nvm(&pf->hw);
8474         if (ret)
8475                 dev_info(&pf->pdev->dev,
8476                          "BW settings NOT SAVED, err %s aq_err %s\n",
8477                          i40e_stat_str(&pf->hw, ret),
8478                          i40e_aq_str(&pf->hw, last_aq_status));
8479 bw_commit_out:
8480
8481         return ret;
8482 }
8483
8484 /**
8485  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
8486  * @pf: board private structure to initialize
8487  *
8488  * i40e_sw_init initializes the Adapter private data structure.
8489  * Fields are initialized based on PCI device information and
8490  * OS network device settings (MTU size).
8491  **/
8492 static int i40e_sw_init(struct i40e_pf *pf)
8493 {
8494         int err = 0;
8495         int size;
8496
8497         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
8498                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
8499         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
8500                 if (I40E_DEBUG_USER & debug)
8501                         pf->hw.debug_mask = debug;
8502                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
8503                                                 I40E_DEFAULT_MSG_ENABLE);
8504         }
8505
8506         /* Set default capability flags */
8507         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
8508                     I40E_FLAG_MSI_ENABLED     |
8509                     I40E_FLAG_MSIX_ENABLED;
8510
8511         /* Set default ITR */
8512         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
8513         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
8514
8515         /* Depending on PF configurations, it is possible that the RSS
8516          * maximum might end up larger than the available queues
8517          */
8518         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
8519         pf->alloc_rss_size = 1;
8520         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
8521         pf->rss_size_max = min_t(int, pf->rss_size_max,
8522                                  pf->hw.func_caps.num_tx_qp);
8523         if (pf->hw.func_caps.rss) {
8524                 pf->flags |= I40E_FLAG_RSS_ENABLED;
8525                 pf->alloc_rss_size = min_t(int, pf->rss_size_max,
8526                                            num_online_cpus());
8527         }
8528
8529         /* MFP mode enabled */
8530         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
8531                 pf->flags |= I40E_FLAG_MFP_ENABLED;
8532                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
8533                 if (i40e_get_npar_bw_setting(pf))
8534                         dev_warn(&pf->pdev->dev,
8535                                  "Could not get NPAR bw settings\n");
8536                 else
8537                         dev_info(&pf->pdev->dev,
8538                                  "Min BW = %8.8x, Max BW = %8.8x\n",
8539                                  pf->npar_min_bw, pf->npar_max_bw);
8540         }
8541
8542         /* FW/NVM is not yet fixed in this regard */
8543         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
8544             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
8545                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8546                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
8547                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
8548                     pf->hw.num_partitions > 1)
8549                         dev_info(&pf->pdev->dev,
8550                                  "Flow Director Sideband mode Disabled in MFP mode\n");
8551                 else
8552                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8553                 pf->fdir_pf_filter_count =
8554                                  pf->hw.func_caps.fd_filters_guaranteed;
8555                 pf->hw.fdir_shared_filter_count =
8556                                  pf->hw.func_caps.fd_filters_best_effort;
8557         }
8558
8559         if (i40e_is_mac_710(&pf->hw) &&
8560             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
8561             (pf->hw.aq.fw_maj_ver < 4))) {
8562                 pf->flags |= I40E_FLAG_RESTART_AUTONEG;
8563                 /* No DCB support  for FW < v4.33 */
8564                 pf->flags |= I40E_FLAG_NO_DCB_SUPPORT;
8565         }
8566
8567         /* Disable FW LLDP if FW < v4.3 */
8568         if (i40e_is_mac_710(&pf->hw) &&
8569             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
8570             (pf->hw.aq.fw_maj_ver < 4)))
8571                 pf->flags |= I40E_FLAG_STOP_FW_LLDP;
8572
8573         /* Use the FW Set LLDP MIB API if FW > v4.40 */
8574         if (i40e_is_mac_710(&pf->hw) &&
8575             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver >= 40)) ||
8576             (pf->hw.aq.fw_maj_ver >= 5)))
8577                 pf->flags |= I40E_FLAG_USE_SET_LLDP_MIB;
8578
8579         if (pf->hw.func_caps.vmdq) {
8580                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
8581                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
8582                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
8583         }
8584
8585         if (pf->hw.func_caps.iwarp) {
8586                 pf->flags |= I40E_FLAG_IWARP_ENABLED;
8587                 /* IWARP needs one extra vector for CQP just like MISC.*/
8588                 pf->num_iwarp_msix = (int)num_online_cpus() + 1;
8589         }
8590
8591 #ifdef I40E_FCOE
8592         i40e_init_pf_fcoe(pf);
8593
8594 #endif /* I40E_FCOE */
8595 #ifdef CONFIG_PCI_IOV
8596         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
8597                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
8598                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
8599                 pf->num_req_vfs = min_t(int,
8600                                         pf->hw.func_caps.num_vfs,
8601                                         I40E_MAX_VF_COUNT);
8602         }
8603 #endif /* CONFIG_PCI_IOV */
8604         if (pf->hw.mac.type == I40E_MAC_X722) {
8605                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
8606                              I40E_FLAG_128_QP_RSS_CAPABLE |
8607                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
8608                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
8609                              I40E_FLAG_WB_ON_ITR_CAPABLE |
8610                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE |
8611                              I40E_FLAG_NO_PCI_LINK_CHECK |
8612                              I40E_FLAG_100M_SGMII_CAPABLE |
8613                              I40E_FLAG_USE_SET_LLDP_MIB |
8614                              I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
8615         } else if ((pf->hw.aq.api_maj_ver > 1) ||
8616                    ((pf->hw.aq.api_maj_ver == 1) &&
8617                     (pf->hw.aq.api_min_ver > 4))) {
8618                 /* Supported in FW API version higher than 1.4 */
8619                 pf->flags |= I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
8620                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8621         } else {
8622                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8623         }
8624
8625         pf->eeprom_version = 0xDEAD;
8626         pf->lan_veb = I40E_NO_VEB;
8627         pf->lan_vsi = I40E_NO_VSI;
8628
8629         /* By default FW has this off for performance reasons */
8630         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
8631
8632         /* set up queue assignment tracking */
8633         size = sizeof(struct i40e_lump_tracking)
8634                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8635         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8636         if (!pf->qp_pile) {
8637                 err = -ENOMEM;
8638                 goto sw_init_done;
8639         }
8640         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8641         pf->qp_pile->search_hint = 0;
8642
8643         pf->tx_timeout_recovery_level = 1;
8644
8645         mutex_init(&pf->switch_mutex);
8646
8647         /* If NPAR is enabled nudge the Tx scheduler */
8648         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8649                 i40e_set_npar_bw_setting(pf);
8650
8651 sw_init_done:
8652         return err;
8653 }
8654
8655 /**
8656  * i40e_set_ntuple - set the ntuple feature flag and take action
8657  * @pf: board private structure to initialize
8658  * @features: the feature set that the stack is suggesting
8659  *
8660  * returns a bool to indicate if reset needs to happen
8661  **/
8662 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8663 {
8664         bool need_reset = false;
8665
8666         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8667          * the state changed, we need to reset.
8668          */
8669         if (features & NETIF_F_NTUPLE) {
8670                 /* Enable filters and mark for reset */
8671                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8672                         need_reset = true;
8673                 /* enable FD_SB only if there is MSI-X vector */
8674                 if (pf->num_fdsb_msix > 0)
8675                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8676         } else {
8677                 /* turn off filters, mark for reset and clear SW filter list */
8678                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8679                         need_reset = true;
8680                         i40e_fdir_filter_exit(pf);
8681                 }
8682                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8683                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8684                 /* reset fd counters */
8685                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8686                 pf->fdir_pf_active_filters = 0;
8687                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8688                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8689                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8690                 /* if ATR was auto disabled it can be re-enabled. */
8691                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8692                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
8693                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8694         }
8695         return need_reset;
8696 }
8697
8698 /**
8699  * i40e_set_features - set the netdev feature flags
8700  * @netdev: ptr to the netdev being adjusted
8701  * @features: the feature set that the stack is suggesting
8702  **/
8703 static int i40e_set_features(struct net_device *netdev,
8704                              netdev_features_t features)
8705 {
8706         struct i40e_netdev_priv *np = netdev_priv(netdev);
8707         struct i40e_vsi *vsi = np->vsi;
8708         struct i40e_pf *pf = vsi->back;
8709         bool need_reset;
8710
8711         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8712                 i40e_vlan_stripping_enable(vsi);
8713         else
8714                 i40e_vlan_stripping_disable(vsi);
8715
8716         need_reset = i40e_set_ntuple(pf, features);
8717
8718         if (need_reset)
8719                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8720
8721         return 0;
8722 }
8723
8724 /**
8725  * i40e_get_udp_port_idx - Lookup a possibly offloaded for Rx UDP port
8726  * @pf: board private structure
8727  * @port: The UDP port to look up
8728  *
8729  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8730  **/
8731 static u8 i40e_get_udp_port_idx(struct i40e_pf *pf, __be16 port)
8732 {
8733         u8 i;
8734
8735         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8736                 if (pf->udp_ports[i].index == port)
8737                         return i;
8738         }
8739
8740         return i;
8741 }
8742
8743 /**
8744  * i40e_udp_tunnel_add - Get notifications about UDP tunnel ports that come up
8745  * @netdev: This physical port's netdev
8746  * @ti: Tunnel endpoint information
8747  **/
8748 static void i40e_udp_tunnel_add(struct net_device *netdev,
8749                                 struct udp_tunnel_info *ti)
8750 {
8751         struct i40e_netdev_priv *np = netdev_priv(netdev);
8752         struct i40e_vsi *vsi = np->vsi;
8753         struct i40e_pf *pf = vsi->back;
8754         __be16 port = ti->port;
8755         u8 next_idx;
8756         u8 idx;
8757
8758         idx = i40e_get_udp_port_idx(pf, port);
8759
8760         /* Check if port already exists */
8761         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8762                 netdev_info(netdev, "port %d already offloaded\n",
8763                             ntohs(port));
8764                 return;
8765         }
8766
8767         /* Now check if there is space to add the new port */
8768         next_idx = i40e_get_udp_port_idx(pf, 0);
8769
8770         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8771                 netdev_info(netdev, "maximum number of offloaded UDP ports reached, not adding port %d\n",
8772                             ntohs(port));
8773                 return;
8774         }
8775
8776         switch (ti->type) {
8777         case UDP_TUNNEL_TYPE_VXLAN:
8778                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_VXLAN;
8779                 break;
8780         case UDP_TUNNEL_TYPE_GENEVE:
8781                 if (!(pf->flags & I40E_FLAG_GENEVE_OFFLOAD_CAPABLE))
8782                         return;
8783                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_NGE;
8784                 break;
8785         default:
8786                 return;
8787         }
8788
8789         /* New port: add it and mark its index in the bitmap */
8790         pf->udp_ports[next_idx].index = port;
8791         pf->pending_udp_bitmap |= BIT_ULL(next_idx);
8792         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8793 }
8794
8795 /**
8796  * i40e_udp_tunnel_del - Get notifications about UDP tunnel ports that go away
8797  * @netdev: This physical port's netdev
8798  * @ti: Tunnel endpoint information
8799  **/
8800 static void i40e_udp_tunnel_del(struct net_device *netdev,
8801                                 struct udp_tunnel_info *ti)
8802 {
8803         struct i40e_netdev_priv *np = netdev_priv(netdev);
8804         struct i40e_vsi *vsi = np->vsi;
8805         struct i40e_pf *pf = vsi->back;
8806         __be16 port = ti->port;
8807         u8 idx;
8808
8809         idx = i40e_get_udp_port_idx(pf, port);
8810
8811         /* Check if port already exists */
8812         if (idx >= I40E_MAX_PF_UDP_OFFLOAD_PORTS)
8813                 goto not_found;
8814
8815         switch (ti->type) {
8816         case UDP_TUNNEL_TYPE_VXLAN:
8817                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_VXLAN)
8818                         goto not_found;
8819                 break;
8820         case UDP_TUNNEL_TYPE_GENEVE:
8821                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_NGE)
8822                         goto not_found;
8823                 break;
8824         default:
8825                 goto not_found;
8826         }
8827
8828         /* if port exists, set it to 0 (mark for deletion)
8829          * and make it pending
8830          */
8831         pf->udp_ports[idx].index = 0;
8832         pf->pending_udp_bitmap |= BIT_ULL(idx);
8833         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8834
8835         return;
8836 not_found:
8837         netdev_warn(netdev, "UDP port %d was not found, not deleting\n",
8838                     ntohs(port));
8839 }
8840
8841 static int i40e_get_phys_port_id(struct net_device *netdev,
8842                                  struct netdev_phys_item_id *ppid)
8843 {
8844         struct i40e_netdev_priv *np = netdev_priv(netdev);
8845         struct i40e_pf *pf = np->vsi->back;
8846         struct i40e_hw *hw = &pf->hw;
8847
8848         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8849                 return -EOPNOTSUPP;
8850
8851         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8852         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8853
8854         return 0;
8855 }
8856
8857 /**
8858  * i40e_ndo_fdb_add - add an entry to the hardware database
8859  * @ndm: the input from the stack
8860  * @tb: pointer to array of nladdr (unused)
8861  * @dev: the net device pointer
8862  * @addr: the MAC address entry being added
8863  * @flags: instructions from stack about fdb operation
8864  */
8865 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8866                             struct net_device *dev,
8867                             const unsigned char *addr, u16 vid,
8868                             u16 flags)
8869 {
8870         struct i40e_netdev_priv *np = netdev_priv(dev);
8871         struct i40e_pf *pf = np->vsi->back;
8872         int err = 0;
8873
8874         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8875                 return -EOPNOTSUPP;
8876
8877         if (vid) {
8878                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8879                 return -EINVAL;
8880         }
8881
8882         /* Hardware does not support aging addresses so if a
8883          * ndm_state is given only allow permanent addresses
8884          */
8885         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8886                 netdev_info(dev, "FDB only supports static addresses\n");
8887                 return -EINVAL;
8888         }
8889
8890         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8891                 err = dev_uc_add_excl(dev, addr);
8892         else if (is_multicast_ether_addr(addr))
8893                 err = dev_mc_add_excl(dev, addr);
8894         else
8895                 err = -EINVAL;
8896
8897         /* Only return duplicate errors if NLM_F_EXCL is set */
8898         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8899                 err = 0;
8900
8901         return err;
8902 }
8903
8904 /**
8905  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8906  * @dev: the netdev being configured
8907  * @nlh: RTNL message
8908  *
8909  * Inserts a new hardware bridge if not already created and
8910  * enables the bridging mode requested (VEB or VEPA). If the
8911  * hardware bridge has already been inserted and the request
8912  * is to change the mode then that requires a PF reset to
8913  * allow rebuild of the components with required hardware
8914  * bridge mode enabled.
8915  **/
8916 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8917                                    struct nlmsghdr *nlh,
8918                                    u16 flags)
8919 {
8920         struct i40e_netdev_priv *np = netdev_priv(dev);
8921         struct i40e_vsi *vsi = np->vsi;
8922         struct i40e_pf *pf = vsi->back;
8923         struct i40e_veb *veb = NULL;
8924         struct nlattr *attr, *br_spec;
8925         int i, rem;
8926
8927         /* Only for PF VSI for now */
8928         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8929                 return -EOPNOTSUPP;
8930
8931         /* Find the HW bridge for PF VSI */
8932         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8933                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8934                         veb = pf->veb[i];
8935         }
8936
8937         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8938
8939         nla_for_each_nested(attr, br_spec, rem) {
8940                 __u16 mode;
8941
8942                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8943                         continue;
8944
8945                 mode = nla_get_u16(attr);
8946                 if ((mode != BRIDGE_MODE_VEPA) &&
8947                     (mode != BRIDGE_MODE_VEB))
8948                         return -EINVAL;
8949
8950                 /* Insert a new HW bridge */
8951                 if (!veb) {
8952                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8953                                              vsi->tc_config.enabled_tc);
8954                         if (veb) {
8955                                 veb->bridge_mode = mode;
8956                                 i40e_config_bridge_mode(veb);
8957                         } else {
8958                                 /* No Bridge HW offload available */
8959                                 return -ENOENT;
8960                         }
8961                         break;
8962                 } else if (mode != veb->bridge_mode) {
8963                         /* Existing HW bridge but different mode needs reset */
8964                         veb->bridge_mode = mode;
8965                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8966                         if (mode == BRIDGE_MODE_VEB)
8967                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8968                         else
8969                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8970                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8971                         break;
8972                 }
8973         }
8974
8975         return 0;
8976 }
8977
8978 /**
8979  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8980  * @skb: skb buff
8981  * @pid: process id
8982  * @seq: RTNL message seq #
8983  * @dev: the netdev being configured
8984  * @filter_mask: unused
8985  * @nlflags: netlink flags passed in
8986  *
8987  * Return the mode in which the hardware bridge is operating in
8988  * i.e VEB or VEPA.
8989  **/
8990 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8991                                    struct net_device *dev,
8992                                    u32 __always_unused filter_mask,
8993                                    int nlflags)
8994 {
8995         struct i40e_netdev_priv *np = netdev_priv(dev);
8996         struct i40e_vsi *vsi = np->vsi;
8997         struct i40e_pf *pf = vsi->back;
8998         struct i40e_veb *veb = NULL;
8999         int i;
9000
9001         /* Only for PF VSI for now */
9002         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
9003                 return -EOPNOTSUPP;
9004
9005         /* Find the HW bridge for the PF VSI */
9006         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9007                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9008                         veb = pf->veb[i];
9009         }
9010
9011         if (!veb)
9012                 return 0;
9013
9014         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
9015                                        nlflags, 0, 0, filter_mask, NULL);
9016 }
9017
9018 /* Hardware supports L4 tunnel length of 128B (=2^7) which includes
9019  * inner mac plus all inner ethertypes.
9020  */
9021 #define I40E_MAX_TUNNEL_HDR_LEN 128
9022 /**
9023  * i40e_features_check - Validate encapsulated packet conforms to limits
9024  * @skb: skb buff
9025  * @dev: This physical port's netdev
9026  * @features: Offload features that the stack believes apply
9027  **/
9028 static netdev_features_t i40e_features_check(struct sk_buff *skb,
9029                                              struct net_device *dev,
9030                                              netdev_features_t features)
9031 {
9032         if (skb->encapsulation &&
9033             ((skb_inner_network_header(skb) - skb_transport_header(skb)) >
9034              I40E_MAX_TUNNEL_HDR_LEN))
9035                 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
9036
9037         return features;
9038 }
9039
9040 static const struct net_device_ops i40e_netdev_ops = {
9041         .ndo_open               = i40e_open,
9042         .ndo_stop               = i40e_close,
9043         .ndo_start_xmit         = i40e_lan_xmit_frame,
9044         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
9045         .ndo_set_rx_mode        = i40e_set_rx_mode,
9046         .ndo_validate_addr      = eth_validate_addr,
9047         .ndo_set_mac_address    = i40e_set_mac,
9048         .ndo_change_mtu         = i40e_change_mtu,
9049         .ndo_do_ioctl           = i40e_ioctl,
9050         .ndo_tx_timeout         = i40e_tx_timeout,
9051         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
9052         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
9053 #ifdef CONFIG_NET_POLL_CONTROLLER
9054         .ndo_poll_controller    = i40e_netpoll,
9055 #endif
9056         .ndo_setup_tc           = __i40e_setup_tc,
9057 #ifdef I40E_FCOE
9058         .ndo_fcoe_enable        = i40e_fcoe_enable,
9059         .ndo_fcoe_disable       = i40e_fcoe_disable,
9060 #endif
9061         .ndo_set_features       = i40e_set_features,
9062         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
9063         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
9064         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
9065         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
9066         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
9067         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
9068         .ndo_set_vf_trust       = i40e_ndo_set_vf_trust,
9069         .ndo_udp_tunnel_add     = i40e_udp_tunnel_add,
9070         .ndo_udp_tunnel_del     = i40e_udp_tunnel_del,
9071         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
9072         .ndo_fdb_add            = i40e_ndo_fdb_add,
9073         .ndo_features_check     = i40e_features_check,
9074         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
9075         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
9076 };
9077
9078 /**
9079  * i40e_config_netdev - Setup the netdev flags
9080  * @vsi: the VSI being configured
9081  *
9082  * Returns 0 on success, negative value on failure
9083  **/
9084 static int i40e_config_netdev(struct i40e_vsi *vsi)
9085 {
9086         struct i40e_pf *pf = vsi->back;
9087         struct i40e_hw *hw = &pf->hw;
9088         struct i40e_netdev_priv *np;
9089         struct net_device *netdev;
9090         u8 mac_addr[ETH_ALEN];
9091         int etherdev_size;
9092
9093         etherdev_size = sizeof(struct i40e_netdev_priv);
9094         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
9095         if (!netdev)
9096                 return -ENOMEM;
9097
9098         vsi->netdev = netdev;
9099         np = netdev_priv(netdev);
9100         np->vsi = vsi;
9101
9102         netdev->hw_enc_features |= NETIF_F_SG                   |
9103                                    NETIF_F_IP_CSUM              |
9104                                    NETIF_F_IPV6_CSUM            |
9105                                    NETIF_F_HIGHDMA              |
9106                                    NETIF_F_SOFT_FEATURES        |
9107                                    NETIF_F_TSO                  |
9108                                    NETIF_F_TSO_ECN              |
9109                                    NETIF_F_TSO6                 |
9110                                    NETIF_F_GSO_GRE              |
9111                                    NETIF_F_GSO_GRE_CSUM         |
9112                                    NETIF_F_GSO_IPXIP4           |
9113                                    NETIF_F_GSO_IPXIP6           |
9114                                    NETIF_F_GSO_UDP_TUNNEL       |
9115                                    NETIF_F_GSO_UDP_TUNNEL_CSUM  |
9116                                    NETIF_F_GSO_PARTIAL          |
9117                                    NETIF_F_SCTP_CRC             |
9118                                    NETIF_F_RXHASH               |
9119                                    NETIF_F_RXCSUM               |
9120                                    0;
9121
9122         if (!(pf->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE))
9123                 netdev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
9124
9125         netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
9126
9127         /* record features VLANs can make use of */
9128         netdev->vlan_features |= netdev->hw_enc_features |
9129                                  NETIF_F_TSO_MANGLEID;
9130
9131         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
9132                 netdev->hw_features |= NETIF_F_NTUPLE;
9133
9134         netdev->hw_features |= netdev->hw_enc_features  |
9135                                NETIF_F_HW_VLAN_CTAG_TX  |
9136                                NETIF_F_HW_VLAN_CTAG_RX;
9137
9138         netdev->features |= netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
9139         netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
9140
9141         if (vsi->type == I40E_VSI_MAIN) {
9142                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
9143                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
9144                 /* The following steps are necessary to prevent reception
9145                  * of tagged packets - some older NVM configurations load a
9146                  * default a MAC-VLAN filter that accepts any tagged packet
9147                  * which must be replaced by a normal filter.
9148                  */
9149                 i40e_rm_default_mac_filter(vsi, mac_addr);
9150                 spin_lock_bh(&vsi->mac_filter_list_lock);
9151                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, true);
9152                 spin_unlock_bh(&vsi->mac_filter_list_lock);
9153         } else {
9154                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
9155                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
9156                          pf->vsi[pf->lan_vsi]->netdev->name);
9157                 random_ether_addr(mac_addr);
9158
9159                 spin_lock_bh(&vsi->mac_filter_list_lock);
9160                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
9161                 spin_unlock_bh(&vsi->mac_filter_list_lock);
9162         }
9163
9164         ether_addr_copy(netdev->dev_addr, mac_addr);
9165         ether_addr_copy(netdev->perm_addr, mac_addr);
9166
9167         netdev->priv_flags |= IFF_UNICAST_FLT;
9168         netdev->priv_flags |= IFF_SUPP_NOFCS;
9169         /* Setup netdev TC information */
9170         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
9171
9172         netdev->netdev_ops = &i40e_netdev_ops;
9173         netdev->watchdog_timeo = 5 * HZ;
9174         i40e_set_ethtool_ops(netdev);
9175 #ifdef I40E_FCOE
9176         i40e_fcoe_config_netdev(netdev, vsi);
9177 #endif
9178
9179         return 0;
9180 }
9181
9182 /**
9183  * i40e_vsi_delete - Delete a VSI from the switch
9184  * @vsi: the VSI being removed
9185  *
9186  * Returns 0 on success, negative value on failure
9187  **/
9188 static void i40e_vsi_delete(struct i40e_vsi *vsi)
9189 {
9190         /* remove default VSI is not allowed */
9191         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
9192                 return;
9193
9194         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
9195 }
9196
9197 /**
9198  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
9199  * @vsi: the VSI being queried
9200  *
9201  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
9202  **/
9203 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
9204 {
9205         struct i40e_veb *veb;
9206         struct i40e_pf *pf = vsi->back;
9207
9208         /* Uplink is not a bridge so default to VEB */
9209         if (vsi->veb_idx == I40E_NO_VEB)
9210                 return 1;
9211
9212         veb = pf->veb[vsi->veb_idx];
9213         if (!veb) {
9214                 dev_info(&pf->pdev->dev,
9215                          "There is no veb associated with the bridge\n");
9216                 return -ENOENT;
9217         }
9218
9219         /* Uplink is a bridge in VEPA mode */
9220         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
9221                 return 0;
9222         } else {
9223                 /* Uplink is a bridge in VEB mode */
9224                 return 1;
9225         }
9226
9227         /* VEPA is now default bridge, so return 0 */
9228         return 0;
9229 }
9230
9231 /**
9232  * i40e_add_vsi - Add a VSI to the switch
9233  * @vsi: the VSI being configured
9234  *
9235  * This initializes a VSI context depending on the VSI type to be added and
9236  * passes it down to the add_vsi aq command.
9237  **/
9238 static int i40e_add_vsi(struct i40e_vsi *vsi)
9239 {
9240         int ret = -ENODEV;
9241         i40e_status aq_ret = 0;
9242         struct i40e_pf *pf = vsi->back;
9243         struct i40e_hw *hw = &pf->hw;
9244         struct i40e_vsi_context ctxt;
9245         struct i40e_mac_filter *f, *ftmp;
9246
9247         u8 enabled_tc = 0x1; /* TC0 enabled */
9248         int f_count = 0;
9249
9250         memset(&ctxt, 0, sizeof(ctxt));
9251         switch (vsi->type) {
9252         case I40E_VSI_MAIN:
9253                 /* The PF's main VSI is already setup as part of the
9254                  * device initialization, so we'll not bother with
9255                  * the add_vsi call, but we will retrieve the current
9256                  * VSI context.
9257                  */
9258                 ctxt.seid = pf->main_vsi_seid;
9259                 ctxt.pf_num = pf->hw.pf_id;
9260                 ctxt.vf_num = 0;
9261                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
9262                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9263                 if (ret) {
9264                         dev_info(&pf->pdev->dev,
9265                                  "couldn't get PF vsi config, err %s aq_err %s\n",
9266                                  i40e_stat_str(&pf->hw, ret),
9267                                  i40e_aq_str(&pf->hw,
9268                                              pf->hw.aq.asq_last_status));
9269                         return -ENOENT;
9270                 }
9271                 vsi->info = ctxt.info;
9272                 vsi->info.valid_sections = 0;
9273
9274                 vsi->seid = ctxt.seid;
9275                 vsi->id = ctxt.vsi_number;
9276
9277                 enabled_tc = i40e_pf_get_tc_map(pf);
9278
9279                 /* MFP mode setup queue map and update VSI */
9280                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
9281                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
9282                         memset(&ctxt, 0, sizeof(ctxt));
9283                         ctxt.seid = pf->main_vsi_seid;
9284                         ctxt.pf_num = pf->hw.pf_id;
9285                         ctxt.vf_num = 0;
9286                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
9287                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
9288                         if (ret) {
9289                                 dev_info(&pf->pdev->dev,
9290                                          "update vsi failed, err %s aq_err %s\n",
9291                                          i40e_stat_str(&pf->hw, ret),
9292                                          i40e_aq_str(&pf->hw,
9293                                                     pf->hw.aq.asq_last_status));
9294                                 ret = -ENOENT;
9295                                 goto err;
9296                         }
9297                         /* update the local VSI info queue map */
9298                         i40e_vsi_update_queue_map(vsi, &ctxt);
9299                         vsi->info.valid_sections = 0;
9300                 } else {
9301                         /* Default/Main VSI is only enabled for TC0
9302                          * reconfigure it to enable all TCs that are
9303                          * available on the port in SFP mode.
9304                          * For MFP case the iSCSI PF would use this
9305                          * flow to enable LAN+iSCSI TC.
9306                          */
9307                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
9308                         if (ret) {
9309                                 dev_info(&pf->pdev->dev,
9310                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
9311                                          enabled_tc,
9312                                          i40e_stat_str(&pf->hw, ret),
9313                                          i40e_aq_str(&pf->hw,
9314                                                     pf->hw.aq.asq_last_status));
9315                                 ret = -ENOENT;
9316                         }
9317                 }
9318                 break;
9319
9320         case I40E_VSI_FDIR:
9321                 ctxt.pf_num = hw->pf_id;
9322                 ctxt.vf_num = 0;
9323                 ctxt.uplink_seid = vsi->uplink_seid;
9324                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9325                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9326                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
9327                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
9328                         ctxt.info.valid_sections |=
9329                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9330                         ctxt.info.switch_id =
9331                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9332                 }
9333                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9334                 break;
9335
9336         case I40E_VSI_VMDQ2:
9337                 ctxt.pf_num = hw->pf_id;
9338                 ctxt.vf_num = 0;
9339                 ctxt.uplink_seid = vsi->uplink_seid;
9340                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9341                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
9342
9343                 /* This VSI is connected to VEB so the switch_id
9344                  * should be set to zero by default.
9345                  */
9346                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9347                         ctxt.info.valid_sections |=
9348                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9349                         ctxt.info.switch_id =
9350                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9351                 }
9352
9353                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9354                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9355                 break;
9356
9357         case I40E_VSI_SRIOV:
9358                 ctxt.pf_num = hw->pf_id;
9359                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
9360                 ctxt.uplink_seid = vsi->uplink_seid;
9361                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9362                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
9363
9364                 /* This VSI is connected to VEB so the switch_id
9365                  * should be set to zero by default.
9366                  */
9367                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9368                         ctxt.info.valid_sections |=
9369                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9370                         ctxt.info.switch_id =
9371                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9372                 }
9373
9374                 if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
9375                         ctxt.info.valid_sections |=
9376                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
9377                         ctxt.info.queueing_opt_flags |=
9378                                 (I40E_AQ_VSI_QUE_OPT_TCP_ENA |
9379                                  I40E_AQ_VSI_QUE_OPT_RSS_LUT_VSI);
9380                 }
9381
9382                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
9383                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
9384                 if (pf->vf[vsi->vf_id].spoofchk) {
9385                         ctxt.info.valid_sections |=
9386                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
9387                         ctxt.info.sec_flags |=
9388                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
9389                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
9390                 }
9391                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9392                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9393                 break;
9394
9395 #ifdef I40E_FCOE
9396         case I40E_VSI_FCOE:
9397                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
9398                 if (ret) {
9399                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
9400                         return ret;
9401                 }
9402                 break;
9403
9404 #endif /* I40E_FCOE */
9405         case I40E_VSI_IWARP:
9406                 /* send down message to iWARP */
9407                 break;
9408
9409         default:
9410                 return -ENODEV;
9411         }
9412
9413         if (vsi->type != I40E_VSI_MAIN) {
9414                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
9415                 if (ret) {
9416                         dev_info(&vsi->back->pdev->dev,
9417                                  "add vsi failed, err %s aq_err %s\n",
9418                                  i40e_stat_str(&pf->hw, ret),
9419                                  i40e_aq_str(&pf->hw,
9420                                              pf->hw.aq.asq_last_status));
9421                         ret = -ENOENT;
9422                         goto err;
9423                 }
9424                 vsi->info = ctxt.info;
9425                 vsi->info.valid_sections = 0;
9426                 vsi->seid = ctxt.seid;
9427                 vsi->id = ctxt.vsi_number;
9428         }
9429         /* Except FDIR VSI, for all othet VSI set the broadcast filter */
9430         if (vsi->type != I40E_VSI_FDIR) {
9431                 aq_ret = i40e_aq_set_vsi_broadcast(hw, vsi->seid, true, NULL);
9432                 if (aq_ret) {
9433                         ret = i40e_aq_rc_to_posix(aq_ret,
9434                                                   hw->aq.asq_last_status);
9435                         dev_info(&pf->pdev->dev,
9436                                  "set brdcast promisc failed, err %s, aq_err %s\n",
9437                                  i40e_stat_str(hw, aq_ret),
9438                                  i40e_aq_str(hw, hw->aq.asq_last_status));
9439                 }
9440         }
9441
9442         vsi->active_filters = 0;
9443         clear_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
9444         spin_lock_bh(&vsi->mac_filter_list_lock);
9445         /* If macvlan filters already exist, force them to get loaded */
9446         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
9447                 f->state = I40E_FILTER_NEW;
9448                 f_count++;
9449         }
9450         spin_unlock_bh(&vsi->mac_filter_list_lock);
9451
9452         if (f_count) {
9453                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
9454                 pf->flags |= I40E_FLAG_FILTER_SYNC;
9455         }
9456
9457         /* Update VSI BW information */
9458         ret = i40e_vsi_get_bw_info(vsi);
9459         if (ret) {
9460                 dev_info(&pf->pdev->dev,
9461                          "couldn't get vsi bw info, err %s aq_err %s\n",
9462                          i40e_stat_str(&pf->hw, ret),
9463                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9464                 /* VSI is already added so not tearing that up */
9465                 ret = 0;
9466         }
9467
9468 err:
9469         return ret;
9470 }
9471
9472 /**
9473  * i40e_vsi_release - Delete a VSI and free its resources
9474  * @vsi: the VSI being removed
9475  *
9476  * Returns 0 on success or < 0 on error
9477  **/
9478 int i40e_vsi_release(struct i40e_vsi *vsi)
9479 {
9480         struct i40e_mac_filter *f, *ftmp;
9481         struct i40e_veb *veb = NULL;
9482         struct i40e_pf *pf;
9483         u16 uplink_seid;
9484         int i, n;
9485
9486         pf = vsi->back;
9487
9488         /* release of a VEB-owner or last VSI is not allowed */
9489         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
9490                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
9491                          vsi->seid, vsi->uplink_seid);
9492                 return -ENODEV;
9493         }
9494         if (vsi == pf->vsi[pf->lan_vsi] &&
9495             !test_bit(__I40E_DOWN, &pf->state)) {
9496                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
9497                 return -ENODEV;
9498         }
9499
9500         uplink_seid = vsi->uplink_seid;
9501         if (vsi->type != I40E_VSI_SRIOV) {
9502                 if (vsi->netdev_registered) {
9503                         vsi->netdev_registered = false;
9504                         if (vsi->netdev) {
9505                                 /* results in a call to i40e_close() */
9506                                 unregister_netdev(vsi->netdev);
9507                         }
9508                 } else {
9509                         i40e_vsi_close(vsi);
9510                 }
9511                 i40e_vsi_disable_irq(vsi);
9512         }
9513
9514         spin_lock_bh(&vsi->mac_filter_list_lock);
9515         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
9516                 i40e_del_filter(vsi, f->macaddr, f->vlan,
9517                                 f->is_vf, f->is_netdev);
9518         spin_unlock_bh(&vsi->mac_filter_list_lock);
9519
9520         i40e_sync_vsi_filters(vsi);
9521
9522         i40e_vsi_delete(vsi);
9523         i40e_vsi_free_q_vectors(vsi);
9524         if (vsi->netdev) {
9525                 free_netdev(vsi->netdev);
9526                 vsi->netdev = NULL;
9527         }
9528         i40e_vsi_clear_rings(vsi);
9529         i40e_vsi_clear(vsi);
9530
9531         /* If this was the last thing on the VEB, except for the
9532          * controlling VSI, remove the VEB, which puts the controlling
9533          * VSI onto the next level down in the switch.
9534          *
9535          * Well, okay, there's one more exception here: don't remove
9536          * the orphan VEBs yet.  We'll wait for an explicit remove request
9537          * from up the network stack.
9538          */
9539         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
9540                 if (pf->vsi[i] &&
9541                     pf->vsi[i]->uplink_seid == uplink_seid &&
9542                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9543                         n++;      /* count the VSIs */
9544                 }
9545         }
9546         for (i = 0; i < I40E_MAX_VEB; i++) {
9547                 if (!pf->veb[i])
9548                         continue;
9549                 if (pf->veb[i]->uplink_seid == uplink_seid)
9550                         n++;     /* count the VEBs */
9551                 if (pf->veb[i]->seid == uplink_seid)
9552                         veb = pf->veb[i];
9553         }
9554         if (n == 0 && veb && veb->uplink_seid != 0)
9555                 i40e_veb_release(veb);
9556
9557         return 0;
9558 }
9559
9560 /**
9561  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
9562  * @vsi: ptr to the VSI
9563  *
9564  * This should only be called after i40e_vsi_mem_alloc() which allocates the
9565  * corresponding SW VSI structure and initializes num_queue_pairs for the
9566  * newly allocated VSI.
9567  *
9568  * Returns 0 on success or negative on failure
9569  **/
9570 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
9571 {
9572         int ret = -ENOENT;
9573         struct i40e_pf *pf = vsi->back;
9574
9575         if (vsi->q_vectors[0]) {
9576                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
9577                          vsi->seid);
9578                 return -EEXIST;
9579         }
9580
9581         if (vsi->base_vector) {
9582                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
9583                          vsi->seid, vsi->base_vector);
9584                 return -EEXIST;
9585         }
9586
9587         ret = i40e_vsi_alloc_q_vectors(vsi);
9588         if (ret) {
9589                 dev_info(&pf->pdev->dev,
9590                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
9591                          vsi->num_q_vectors, vsi->seid, ret);
9592                 vsi->num_q_vectors = 0;
9593                 goto vector_setup_out;
9594         }
9595
9596         /* In Legacy mode, we do not have to get any other vector since we
9597          * piggyback on the misc/ICR0 for queue interrupts.
9598         */
9599         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
9600                 return ret;
9601         if (vsi->num_q_vectors)
9602                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
9603                                                  vsi->num_q_vectors, vsi->idx);
9604         if (vsi->base_vector < 0) {
9605                 dev_info(&pf->pdev->dev,
9606                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
9607                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
9608                 i40e_vsi_free_q_vectors(vsi);
9609                 ret = -ENOENT;
9610                 goto vector_setup_out;
9611         }
9612
9613 vector_setup_out:
9614         return ret;
9615 }
9616
9617 /**
9618  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
9619  * @vsi: pointer to the vsi.
9620  *
9621  * This re-allocates a vsi's queue resources.
9622  *
9623  * Returns pointer to the successfully allocated and configured VSI sw struct
9624  * on success, otherwise returns NULL on failure.
9625  **/
9626 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
9627 {
9628         struct i40e_pf *pf;
9629         u8 enabled_tc;
9630         int ret;
9631
9632         if (!vsi)
9633                 return NULL;
9634
9635         pf = vsi->back;
9636
9637         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
9638         i40e_vsi_clear_rings(vsi);
9639
9640         i40e_vsi_free_arrays(vsi, false);
9641         i40e_set_num_rings_in_vsi(vsi);
9642         ret = i40e_vsi_alloc_arrays(vsi, false);
9643         if (ret)
9644                 goto err_vsi;
9645
9646         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
9647         if (ret < 0) {
9648                 dev_info(&pf->pdev->dev,
9649                          "failed to get tracking for %d queues for VSI %d err %d\n",
9650                          vsi->alloc_queue_pairs, vsi->seid, ret);
9651                 goto err_vsi;
9652         }
9653         vsi->base_queue = ret;
9654
9655         /* Update the FW view of the VSI. Force a reset of TC and queue
9656          * layout configurations.
9657          */
9658         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9659         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9660         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9661         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9662         if (vsi->type == I40E_VSI_MAIN)
9663                 i40e_rm_default_mac_filter(vsi, pf->hw.mac.perm_addr);
9664
9665         /* assign it some queues */
9666         ret = i40e_alloc_rings(vsi);
9667         if (ret)
9668                 goto err_rings;
9669
9670         /* map all of the rings to the q_vectors */
9671         i40e_vsi_map_rings_to_vectors(vsi);
9672         return vsi;
9673
9674 err_rings:
9675         i40e_vsi_free_q_vectors(vsi);
9676         if (vsi->netdev_registered) {
9677                 vsi->netdev_registered = false;
9678                 unregister_netdev(vsi->netdev);
9679                 free_netdev(vsi->netdev);
9680                 vsi->netdev = NULL;
9681         }
9682         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9683 err_vsi:
9684         i40e_vsi_clear(vsi);
9685         return NULL;
9686 }
9687
9688 /**
9689  * i40e_vsi_setup - Set up a VSI by a given type
9690  * @pf: board private structure
9691  * @type: VSI type
9692  * @uplink_seid: the switch element to link to
9693  * @param1: usage depends upon VSI type. For VF types, indicates VF id
9694  *
9695  * This allocates the sw VSI structure and its queue resources, then add a VSI
9696  * to the identified VEB.
9697  *
9698  * Returns pointer to the successfully allocated and configure VSI sw struct on
9699  * success, otherwise returns NULL on failure.
9700  **/
9701 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9702                                 u16 uplink_seid, u32 param1)
9703 {
9704         struct i40e_vsi *vsi = NULL;
9705         struct i40e_veb *veb = NULL;
9706         int ret, i;
9707         int v_idx;
9708
9709         /* The requested uplink_seid must be either
9710          *     - the PF's port seid
9711          *              no VEB is needed because this is the PF
9712          *              or this is a Flow Director special case VSI
9713          *     - seid of an existing VEB
9714          *     - seid of a VSI that owns an existing VEB
9715          *     - seid of a VSI that doesn't own a VEB
9716          *              a new VEB is created and the VSI becomes the owner
9717          *     - seid of the PF VSI, which is what creates the first VEB
9718          *              this is a special case of the previous
9719          *
9720          * Find which uplink_seid we were given and create a new VEB if needed
9721          */
9722         for (i = 0; i < I40E_MAX_VEB; i++) {
9723                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9724                         veb = pf->veb[i];
9725                         break;
9726                 }
9727         }
9728
9729         if (!veb && uplink_seid != pf->mac_seid) {
9730
9731                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9732                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9733                                 vsi = pf->vsi[i];
9734                                 break;
9735                         }
9736                 }
9737                 if (!vsi) {
9738                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9739                                  uplink_seid);
9740                         return NULL;
9741                 }
9742
9743                 if (vsi->uplink_seid == pf->mac_seid)
9744                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9745                                              vsi->tc_config.enabled_tc);
9746                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9747                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9748                                              vsi->tc_config.enabled_tc);
9749                 if (veb) {
9750                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9751                                 dev_info(&vsi->back->pdev->dev,
9752                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9753                                 return NULL;
9754                         }
9755                         /* We come up by default in VEPA mode if SRIOV is not
9756                          * already enabled, in which case we can't force VEPA
9757                          * mode.
9758                          */
9759                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9760                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9761                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9762                         }
9763                         i40e_config_bridge_mode(veb);
9764                 }
9765                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9766                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9767                                 veb = pf->veb[i];
9768                 }
9769                 if (!veb) {
9770                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9771                         return NULL;
9772                 }
9773
9774                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9775                 uplink_seid = veb->seid;
9776         }
9777
9778         /* get vsi sw struct */
9779         v_idx = i40e_vsi_mem_alloc(pf, type);
9780         if (v_idx < 0)
9781                 goto err_alloc;
9782         vsi = pf->vsi[v_idx];
9783         if (!vsi)
9784                 goto err_alloc;
9785         vsi->type = type;
9786         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9787
9788         if (type == I40E_VSI_MAIN)
9789                 pf->lan_vsi = v_idx;
9790         else if (type == I40E_VSI_SRIOV)
9791                 vsi->vf_id = param1;
9792         /* assign it some queues */
9793         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9794                                 vsi->idx);
9795         if (ret < 0) {
9796                 dev_info(&pf->pdev->dev,
9797                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9798                          vsi->alloc_queue_pairs, vsi->seid, ret);
9799                 goto err_vsi;
9800         }
9801         vsi->base_queue = ret;
9802
9803         /* get a VSI from the hardware */
9804         vsi->uplink_seid = uplink_seid;
9805         ret = i40e_add_vsi(vsi);
9806         if (ret)
9807                 goto err_vsi;
9808
9809         switch (vsi->type) {
9810         /* setup the netdev if needed */
9811         case I40E_VSI_MAIN:
9812                 /* Apply relevant filters if a platform-specific mac
9813                  * address was selected.
9814                  */
9815                 if (!!(pf->flags & I40E_FLAG_PF_MAC)) {
9816                         ret = i40e_macaddr_init(vsi, pf->hw.mac.addr);
9817                         if (ret) {
9818                                 dev_warn(&pf->pdev->dev,
9819                                          "could not set up macaddr; err %d\n",
9820                                          ret);
9821                         }
9822                 }
9823         case I40E_VSI_VMDQ2:
9824         case I40E_VSI_FCOE:
9825                 ret = i40e_config_netdev(vsi);
9826                 if (ret)
9827                         goto err_netdev;
9828                 ret = register_netdev(vsi->netdev);
9829                 if (ret)
9830                         goto err_netdev;
9831                 vsi->netdev_registered = true;
9832                 netif_carrier_off(vsi->netdev);
9833 #ifdef CONFIG_I40E_DCB
9834                 /* Setup DCB netlink interface */
9835                 i40e_dcbnl_setup(vsi);
9836 #endif /* CONFIG_I40E_DCB */
9837                 /* fall through */
9838
9839         case I40E_VSI_FDIR:
9840                 /* set up vectors and rings if needed */
9841                 ret = i40e_vsi_setup_vectors(vsi);
9842                 if (ret)
9843                         goto err_msix;
9844
9845                 ret = i40e_alloc_rings(vsi);
9846                 if (ret)
9847                         goto err_rings;
9848
9849                 /* map all of the rings to the q_vectors */
9850                 i40e_vsi_map_rings_to_vectors(vsi);
9851
9852                 i40e_vsi_reset_stats(vsi);
9853                 break;
9854
9855         default:
9856                 /* no netdev or rings for the other VSI types */
9857                 break;
9858         }
9859
9860         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9861             (vsi->type == I40E_VSI_VMDQ2)) {
9862                 ret = i40e_vsi_config_rss(vsi);
9863         }
9864         return vsi;
9865
9866 err_rings:
9867         i40e_vsi_free_q_vectors(vsi);
9868 err_msix:
9869         if (vsi->netdev_registered) {
9870                 vsi->netdev_registered = false;
9871                 unregister_netdev(vsi->netdev);
9872                 free_netdev(vsi->netdev);
9873                 vsi->netdev = NULL;
9874         }
9875 err_netdev:
9876         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9877 err_vsi:
9878         i40e_vsi_clear(vsi);
9879 err_alloc:
9880         return NULL;
9881 }
9882
9883 /**
9884  * i40e_veb_get_bw_info - Query VEB BW information
9885  * @veb: the veb to query
9886  *
9887  * Query the Tx scheduler BW configuration data for given VEB
9888  **/
9889 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9890 {
9891         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9892         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9893         struct i40e_pf *pf = veb->pf;
9894         struct i40e_hw *hw = &pf->hw;
9895         u32 tc_bw_max;
9896         int ret = 0;
9897         int i;
9898
9899         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9900                                                   &bw_data, NULL);
9901         if (ret) {
9902                 dev_info(&pf->pdev->dev,
9903                          "query veb bw config failed, err %s aq_err %s\n",
9904                          i40e_stat_str(&pf->hw, ret),
9905                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9906                 goto out;
9907         }
9908
9909         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9910                                                    &ets_data, NULL);
9911         if (ret) {
9912                 dev_info(&pf->pdev->dev,
9913                          "query veb bw ets config failed, err %s aq_err %s\n",
9914                          i40e_stat_str(&pf->hw, ret),
9915                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9916                 goto out;
9917         }
9918
9919         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9920         veb->bw_max_quanta = ets_data.tc_bw_max;
9921         veb->is_abs_credits = bw_data.absolute_credits_enable;
9922         veb->enabled_tc = ets_data.tc_valid_bits;
9923         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9924                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9925         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9926                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9927                 veb->bw_tc_limit_credits[i] =
9928                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9929                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9930         }
9931
9932 out:
9933         return ret;
9934 }
9935
9936 /**
9937  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9938  * @pf: board private structure
9939  *
9940  * On error: returns error code (negative)
9941  * On success: returns vsi index in PF (positive)
9942  **/
9943 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9944 {
9945         int ret = -ENOENT;
9946         struct i40e_veb *veb;
9947         int i;
9948
9949         /* Need to protect the allocation of switch elements at the PF level */
9950         mutex_lock(&pf->switch_mutex);
9951
9952         /* VEB list may be fragmented if VEB creation/destruction has
9953          * been happening.  We can afford to do a quick scan to look
9954          * for any free slots in the list.
9955          *
9956          * find next empty veb slot, looping back around if necessary
9957          */
9958         i = 0;
9959         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9960                 i++;
9961         if (i >= I40E_MAX_VEB) {
9962                 ret = -ENOMEM;
9963                 goto err_alloc_veb;  /* out of VEB slots! */
9964         }
9965
9966         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9967         if (!veb) {
9968                 ret = -ENOMEM;
9969                 goto err_alloc_veb;
9970         }
9971         veb->pf = pf;
9972         veb->idx = i;
9973         veb->enabled_tc = 1;
9974
9975         pf->veb[i] = veb;
9976         ret = i;
9977 err_alloc_veb:
9978         mutex_unlock(&pf->switch_mutex);
9979         return ret;
9980 }
9981
9982 /**
9983  * i40e_switch_branch_release - Delete a branch of the switch tree
9984  * @branch: where to start deleting
9985  *
9986  * This uses recursion to find the tips of the branch to be
9987  * removed, deleting until we get back to and can delete this VEB.
9988  **/
9989 static void i40e_switch_branch_release(struct i40e_veb *branch)
9990 {
9991         struct i40e_pf *pf = branch->pf;
9992         u16 branch_seid = branch->seid;
9993         u16 veb_idx = branch->idx;
9994         int i;
9995
9996         /* release any VEBs on this VEB - RECURSION */
9997         for (i = 0; i < I40E_MAX_VEB; i++) {
9998                 if (!pf->veb[i])
9999                         continue;
10000                 if (pf->veb[i]->uplink_seid == branch->seid)
10001                         i40e_switch_branch_release(pf->veb[i]);
10002         }
10003
10004         /* Release the VSIs on this VEB, but not the owner VSI.
10005          *
10006          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
10007          *       the VEB itself, so don't use (*branch) after this loop.
10008          */
10009         for (i = 0; i < pf->num_alloc_vsi; i++) {
10010                 if (!pf->vsi[i])
10011                         continue;
10012                 if (pf->vsi[i]->uplink_seid == branch_seid &&
10013                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
10014                         i40e_vsi_release(pf->vsi[i]);
10015                 }
10016         }
10017
10018         /* There's one corner case where the VEB might not have been
10019          * removed, so double check it here and remove it if needed.
10020          * This case happens if the veb was created from the debugfs
10021          * commands and no VSIs were added to it.
10022          */
10023         if (pf->veb[veb_idx])
10024                 i40e_veb_release(pf->veb[veb_idx]);
10025 }
10026
10027 /**
10028  * i40e_veb_clear - remove veb struct
10029  * @veb: the veb to remove
10030  **/
10031 static void i40e_veb_clear(struct i40e_veb *veb)
10032 {
10033         if (!veb)
10034                 return;
10035
10036         if (veb->pf) {
10037                 struct i40e_pf *pf = veb->pf;
10038
10039                 mutex_lock(&pf->switch_mutex);
10040                 if (pf->veb[veb->idx] == veb)
10041                         pf->veb[veb->idx] = NULL;
10042                 mutex_unlock(&pf->switch_mutex);
10043         }
10044
10045         kfree(veb);
10046 }
10047
10048 /**
10049  * i40e_veb_release - Delete a VEB and free its resources
10050  * @veb: the VEB being removed
10051  **/
10052 void i40e_veb_release(struct i40e_veb *veb)
10053 {
10054         struct i40e_vsi *vsi = NULL;
10055         struct i40e_pf *pf;
10056         int i, n = 0;
10057
10058         pf = veb->pf;
10059
10060         /* find the remaining VSI and check for extras */
10061         for (i = 0; i < pf->num_alloc_vsi; i++) {
10062                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
10063                         n++;
10064                         vsi = pf->vsi[i];
10065                 }
10066         }
10067         if (n != 1) {
10068                 dev_info(&pf->pdev->dev,
10069                          "can't remove VEB %d with %d VSIs left\n",
10070                          veb->seid, n);
10071                 return;
10072         }
10073
10074         /* move the remaining VSI to uplink veb */
10075         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
10076         if (veb->uplink_seid) {
10077                 vsi->uplink_seid = veb->uplink_seid;
10078                 if (veb->uplink_seid == pf->mac_seid)
10079                         vsi->veb_idx = I40E_NO_VEB;
10080                 else
10081                         vsi->veb_idx = veb->veb_idx;
10082         } else {
10083                 /* floating VEB */
10084                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
10085                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
10086         }
10087
10088         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10089         i40e_veb_clear(veb);
10090 }
10091
10092 /**
10093  * i40e_add_veb - create the VEB in the switch
10094  * @veb: the VEB to be instantiated
10095  * @vsi: the controlling VSI
10096  **/
10097 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
10098 {
10099         struct i40e_pf *pf = veb->pf;
10100         bool enable_stats = !!(pf->flags & I40E_FLAG_VEB_STATS_ENABLED);
10101         int ret;
10102
10103         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
10104                               veb->enabled_tc, false,
10105                               &veb->seid, enable_stats, NULL);
10106
10107         /* get a VEB from the hardware */
10108         if (ret) {
10109                 dev_info(&pf->pdev->dev,
10110                          "couldn't add VEB, err %s aq_err %s\n",
10111                          i40e_stat_str(&pf->hw, ret),
10112                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10113                 return -EPERM;
10114         }
10115
10116         /* get statistics counter */
10117         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
10118                                          &veb->stats_idx, NULL, NULL, NULL);
10119         if (ret) {
10120                 dev_info(&pf->pdev->dev,
10121                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
10122                          i40e_stat_str(&pf->hw, ret),
10123                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10124                 return -EPERM;
10125         }
10126         ret = i40e_veb_get_bw_info(veb);
10127         if (ret) {
10128                 dev_info(&pf->pdev->dev,
10129                          "couldn't get VEB bw info, err %s aq_err %s\n",
10130                          i40e_stat_str(&pf->hw, ret),
10131                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10132                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10133                 return -ENOENT;
10134         }
10135
10136         vsi->uplink_seid = veb->seid;
10137         vsi->veb_idx = veb->idx;
10138         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
10139
10140         return 0;
10141 }
10142
10143 /**
10144  * i40e_veb_setup - Set up a VEB
10145  * @pf: board private structure
10146  * @flags: VEB setup flags
10147  * @uplink_seid: the switch element to link to
10148  * @vsi_seid: the initial VSI seid
10149  * @enabled_tc: Enabled TC bit-map
10150  *
10151  * This allocates the sw VEB structure and links it into the switch
10152  * It is possible and legal for this to be a duplicate of an already
10153  * existing VEB.  It is also possible for both uplink and vsi seids
10154  * to be zero, in order to create a floating VEB.
10155  *
10156  * Returns pointer to the successfully allocated VEB sw struct on
10157  * success, otherwise returns NULL on failure.
10158  **/
10159 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
10160                                 u16 uplink_seid, u16 vsi_seid,
10161                                 u8 enabled_tc)
10162 {
10163         struct i40e_veb *veb, *uplink_veb = NULL;
10164         int vsi_idx, veb_idx;
10165         int ret;
10166
10167         /* if one seid is 0, the other must be 0 to create a floating relay */
10168         if ((uplink_seid == 0 || vsi_seid == 0) &&
10169             (uplink_seid + vsi_seid != 0)) {
10170                 dev_info(&pf->pdev->dev,
10171                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
10172                          uplink_seid, vsi_seid);
10173                 return NULL;
10174         }
10175
10176         /* make sure there is such a vsi and uplink */
10177         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
10178                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
10179                         break;
10180         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
10181                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
10182                          vsi_seid);
10183                 return NULL;
10184         }
10185
10186         if (uplink_seid && uplink_seid != pf->mac_seid) {
10187                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
10188                         if (pf->veb[veb_idx] &&
10189                             pf->veb[veb_idx]->seid == uplink_seid) {
10190                                 uplink_veb = pf->veb[veb_idx];
10191                                 break;
10192                         }
10193                 }
10194                 if (!uplink_veb) {
10195                         dev_info(&pf->pdev->dev,
10196                                  "uplink seid %d not found\n", uplink_seid);
10197                         return NULL;
10198                 }
10199         }
10200
10201         /* get veb sw struct */
10202         veb_idx = i40e_veb_mem_alloc(pf);
10203         if (veb_idx < 0)
10204                 goto err_alloc;
10205         veb = pf->veb[veb_idx];
10206         veb->flags = flags;
10207         veb->uplink_seid = uplink_seid;
10208         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
10209         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
10210
10211         /* create the VEB in the switch */
10212         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
10213         if (ret)
10214                 goto err_veb;
10215         if (vsi_idx == pf->lan_vsi)
10216                 pf->lan_veb = veb->idx;
10217
10218         return veb;
10219
10220 err_veb:
10221         i40e_veb_clear(veb);
10222 err_alloc:
10223         return NULL;
10224 }
10225
10226 /**
10227  * i40e_setup_pf_switch_element - set PF vars based on switch type
10228  * @pf: board private structure
10229  * @ele: element we are building info from
10230  * @num_reported: total number of elements
10231  * @printconfig: should we print the contents
10232  *
10233  * helper function to assist in extracting a few useful SEID values.
10234  **/
10235 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
10236                                 struct i40e_aqc_switch_config_element_resp *ele,
10237                                 u16 num_reported, bool printconfig)
10238 {
10239         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
10240         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
10241         u8 element_type = ele->element_type;
10242         u16 seid = le16_to_cpu(ele->seid);
10243
10244         if (printconfig)
10245                 dev_info(&pf->pdev->dev,
10246                          "type=%d seid=%d uplink=%d downlink=%d\n",
10247                          element_type, seid, uplink_seid, downlink_seid);
10248
10249         switch (element_type) {
10250         case I40E_SWITCH_ELEMENT_TYPE_MAC:
10251                 pf->mac_seid = seid;
10252                 break;
10253         case I40E_SWITCH_ELEMENT_TYPE_VEB:
10254                 /* Main VEB? */
10255                 if (uplink_seid != pf->mac_seid)
10256                         break;
10257                 if (pf->lan_veb == I40E_NO_VEB) {
10258                         int v;
10259
10260                         /* find existing or else empty VEB */
10261                         for (v = 0; v < I40E_MAX_VEB; v++) {
10262                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
10263                                         pf->lan_veb = v;
10264                                         break;
10265                                 }
10266                         }
10267                         if (pf->lan_veb == I40E_NO_VEB) {
10268                                 v = i40e_veb_mem_alloc(pf);
10269                                 if (v < 0)
10270                                         break;
10271                                 pf->lan_veb = v;
10272                         }
10273                 }
10274
10275                 pf->veb[pf->lan_veb]->seid = seid;
10276                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
10277                 pf->veb[pf->lan_veb]->pf = pf;
10278                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
10279                 break;
10280         case I40E_SWITCH_ELEMENT_TYPE_VSI:
10281                 if (num_reported != 1)
10282                         break;
10283                 /* This is immediately after a reset so we can assume this is
10284                  * the PF's VSI
10285                  */
10286                 pf->mac_seid = uplink_seid;
10287                 pf->pf_seid = downlink_seid;
10288                 pf->main_vsi_seid = seid;
10289                 if (printconfig)
10290                         dev_info(&pf->pdev->dev,
10291                                  "pf_seid=%d main_vsi_seid=%d\n",
10292                                  pf->pf_seid, pf->main_vsi_seid);
10293                 break;
10294         case I40E_SWITCH_ELEMENT_TYPE_PF:
10295         case I40E_SWITCH_ELEMENT_TYPE_VF:
10296         case I40E_SWITCH_ELEMENT_TYPE_EMP:
10297         case I40E_SWITCH_ELEMENT_TYPE_BMC:
10298         case I40E_SWITCH_ELEMENT_TYPE_PE:
10299         case I40E_SWITCH_ELEMENT_TYPE_PA:
10300                 /* ignore these for now */
10301                 break;
10302         default:
10303                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
10304                          element_type, seid);
10305                 break;
10306         }
10307 }
10308
10309 /**
10310  * i40e_fetch_switch_configuration - Get switch config from firmware
10311  * @pf: board private structure
10312  * @printconfig: should we print the contents
10313  *
10314  * Get the current switch configuration from the device and
10315  * extract a few useful SEID values.
10316  **/
10317 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
10318 {
10319         struct i40e_aqc_get_switch_config_resp *sw_config;
10320         u16 next_seid = 0;
10321         int ret = 0;
10322         u8 *aq_buf;
10323         int i;
10324
10325         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
10326         if (!aq_buf)
10327                 return -ENOMEM;
10328
10329         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
10330         do {
10331                 u16 num_reported, num_total;
10332
10333                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
10334                                                 I40E_AQ_LARGE_BUF,
10335                                                 &next_seid, NULL);
10336                 if (ret) {
10337                         dev_info(&pf->pdev->dev,
10338                                  "get switch config failed err %s aq_err %s\n",
10339                                  i40e_stat_str(&pf->hw, ret),
10340                                  i40e_aq_str(&pf->hw,
10341                                              pf->hw.aq.asq_last_status));
10342                         kfree(aq_buf);
10343                         return -ENOENT;
10344                 }
10345
10346                 num_reported = le16_to_cpu(sw_config->header.num_reported);
10347                 num_total = le16_to_cpu(sw_config->header.num_total);
10348
10349                 if (printconfig)
10350                         dev_info(&pf->pdev->dev,
10351                                  "header: %d reported %d total\n",
10352                                  num_reported, num_total);
10353
10354                 for (i = 0; i < num_reported; i++) {
10355                         struct i40e_aqc_switch_config_element_resp *ele =
10356                                 &sw_config->element[i];
10357
10358                         i40e_setup_pf_switch_element(pf, ele, num_reported,
10359                                                      printconfig);
10360                 }
10361         } while (next_seid != 0);
10362
10363         kfree(aq_buf);
10364         return ret;
10365 }
10366
10367 /**
10368  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
10369  * @pf: board private structure
10370  * @reinit: if the Main VSI needs to re-initialized.
10371  *
10372  * Returns 0 on success, negative value on failure
10373  **/
10374 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
10375 {
10376         u16 flags = 0;
10377         int ret;
10378
10379         /* find out what's out there already */
10380         ret = i40e_fetch_switch_configuration(pf, false);
10381         if (ret) {
10382                 dev_info(&pf->pdev->dev,
10383                          "couldn't fetch switch config, err %s aq_err %s\n",
10384                          i40e_stat_str(&pf->hw, ret),
10385                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10386                 return ret;
10387         }
10388         i40e_pf_reset_stats(pf);
10389
10390         /* set the switch config bit for the whole device to
10391          * support limited promisc or true promisc
10392          * when user requests promisc. The default is limited
10393          * promisc.
10394         */
10395
10396         if ((pf->hw.pf_id == 0) &&
10397             !(pf->flags & I40E_FLAG_TRUE_PROMISC_SUPPORT))
10398                 flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
10399
10400         if (pf->hw.pf_id == 0) {
10401                 u16 valid_flags;
10402
10403                 valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
10404                 ret = i40e_aq_set_switch_config(&pf->hw, flags, valid_flags,
10405                                                 NULL);
10406                 if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) {
10407                         dev_info(&pf->pdev->dev,
10408                                  "couldn't set switch config bits, err %s aq_err %s\n",
10409                                  i40e_stat_str(&pf->hw, ret),
10410                                  i40e_aq_str(&pf->hw,
10411                                              pf->hw.aq.asq_last_status));
10412                         /* not a fatal problem, just keep going */
10413                 }
10414         }
10415
10416         /* first time setup */
10417         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
10418                 struct i40e_vsi *vsi = NULL;
10419                 u16 uplink_seid;
10420
10421                 /* Set up the PF VSI associated with the PF's main VSI
10422                  * that is already in the HW switch
10423                  */
10424                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
10425                         uplink_seid = pf->veb[pf->lan_veb]->seid;
10426                 else
10427                         uplink_seid = pf->mac_seid;
10428                 if (pf->lan_vsi == I40E_NO_VSI)
10429                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
10430                 else if (reinit)
10431                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
10432                 if (!vsi) {
10433                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
10434                         i40e_fdir_teardown(pf);
10435                         return -EAGAIN;
10436                 }
10437         } else {
10438                 /* force a reset of TC and queue layout configurations */
10439                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
10440
10441                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
10442                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
10443                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
10444         }
10445         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
10446
10447         i40e_fdir_sb_setup(pf);
10448
10449         /* Setup static PF queue filter control settings */
10450         ret = i40e_setup_pf_filter_control(pf);
10451         if (ret) {
10452                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
10453                          ret);
10454                 /* Failure here should not stop continuing other steps */
10455         }
10456
10457         /* enable RSS in the HW, even for only one queue, as the stack can use
10458          * the hash
10459          */
10460         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
10461                 i40e_pf_config_rss(pf);
10462
10463         /* fill in link information and enable LSE reporting */
10464         i40e_update_link_info(&pf->hw);
10465         i40e_link_event(pf);
10466
10467         /* Initialize user-specific link properties */
10468         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
10469                                   I40E_AQ_AN_COMPLETED) ? true : false);
10470
10471         i40e_ptp_init(pf);
10472
10473         return ret;
10474 }
10475
10476 /**
10477  * i40e_determine_queue_usage - Work out queue distribution
10478  * @pf: board private structure
10479  **/
10480 static void i40e_determine_queue_usage(struct i40e_pf *pf)
10481 {
10482         int queues_left;
10483
10484         pf->num_lan_qps = 0;
10485 #ifdef I40E_FCOE
10486         pf->num_fcoe_qps = 0;
10487 #endif
10488
10489         /* Find the max queues to be put into basic use.  We'll always be
10490          * using TC0, whether or not DCB is running, and TC0 will get the
10491          * big RSS set.
10492          */
10493         queues_left = pf->hw.func_caps.num_tx_qp;
10494
10495         if ((queues_left == 1) ||
10496             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
10497                 /* one qp for PF, no queues for anything else */
10498                 queues_left = 0;
10499                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10500
10501                 /* make sure all the fancies are disabled */
10502                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10503                                I40E_FLAG_IWARP_ENABLED  |
10504 #ifdef I40E_FCOE
10505                                I40E_FLAG_FCOE_ENABLED   |
10506 #endif
10507                                I40E_FLAG_FD_SB_ENABLED  |
10508                                I40E_FLAG_FD_ATR_ENABLED |
10509                                I40E_FLAG_DCB_CAPABLE    |
10510                                I40E_FLAG_DCB_ENABLED    |
10511                                I40E_FLAG_SRIOV_ENABLED  |
10512                                I40E_FLAG_VMDQ_ENABLED);
10513         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
10514                                   I40E_FLAG_FD_SB_ENABLED |
10515                                   I40E_FLAG_FD_ATR_ENABLED |
10516                                   I40E_FLAG_DCB_CAPABLE))) {
10517                 /* one qp for PF */
10518                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10519                 queues_left -= pf->num_lan_qps;
10520
10521                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10522                                I40E_FLAG_IWARP_ENABLED  |
10523 #ifdef I40E_FCOE
10524                                I40E_FLAG_FCOE_ENABLED   |
10525 #endif
10526                                I40E_FLAG_FD_SB_ENABLED  |
10527                                I40E_FLAG_FD_ATR_ENABLED |
10528                                I40E_FLAG_DCB_ENABLED    |
10529                                I40E_FLAG_VMDQ_ENABLED);
10530         } else {
10531                 /* Not enough queues for all TCs */
10532                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
10533                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
10534                         pf->flags &= ~(I40E_FLAG_DCB_CAPABLE |
10535                                         I40E_FLAG_DCB_ENABLED);
10536                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
10537                 }
10538                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
10539                                         num_online_cpus());
10540                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
10541                                         pf->hw.func_caps.num_tx_qp);
10542
10543                 queues_left -= pf->num_lan_qps;
10544         }
10545
10546 #ifdef I40E_FCOE
10547         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
10548                 if (I40E_DEFAULT_FCOE <= queues_left) {
10549                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
10550                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
10551                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
10552                 } else {
10553                         pf->num_fcoe_qps = 0;
10554                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
10555                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
10556                 }
10557
10558                 queues_left -= pf->num_fcoe_qps;
10559         }
10560
10561 #endif
10562         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10563                 if (queues_left > 1) {
10564                         queues_left -= 1; /* save 1 queue for FD */
10565                 } else {
10566                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
10567                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
10568                 }
10569         }
10570
10571         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10572             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
10573                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
10574                                         (queues_left / pf->num_vf_qps));
10575                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
10576         }
10577
10578         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
10579             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
10580                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
10581                                           (queues_left / pf->num_vmdq_qps));
10582                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
10583         }
10584
10585         pf->queues_left = queues_left;
10586         dev_dbg(&pf->pdev->dev,
10587                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
10588                 pf->hw.func_caps.num_tx_qp,
10589                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
10590                 pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
10591                 pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
10592                 queues_left);
10593 #ifdef I40E_FCOE
10594         dev_dbg(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
10595 #endif
10596 }
10597
10598 /**
10599  * i40e_setup_pf_filter_control - Setup PF static filter control
10600  * @pf: PF to be setup
10601  *
10602  * i40e_setup_pf_filter_control sets up a PF's initial filter control
10603  * settings. If PE/FCoE are enabled then it will also set the per PF
10604  * based filter sizes required for them. It also enables Flow director,
10605  * ethertype and macvlan type filter settings for the pf.
10606  *
10607  * Returns 0 on success, negative on failure
10608  **/
10609 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
10610 {
10611         struct i40e_filter_control_settings *settings = &pf->filter_settings;
10612
10613         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
10614
10615         /* Flow Director is enabled */
10616         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
10617                 settings->enable_fdir = true;
10618
10619         /* Ethtype and MACVLAN filters enabled for PF */
10620         settings->enable_ethtype = true;
10621         settings->enable_macvlan = true;
10622
10623         if (i40e_set_filter_control(&pf->hw, settings))
10624                 return -ENOENT;
10625
10626         return 0;
10627 }
10628
10629 #define INFO_STRING_LEN 255
10630 #define REMAIN(__x) (INFO_STRING_LEN - (__x))
10631 static void i40e_print_features(struct i40e_pf *pf)
10632 {
10633         struct i40e_hw *hw = &pf->hw;
10634         char *buf;
10635         int i;
10636
10637         buf = kmalloc(INFO_STRING_LEN, GFP_KERNEL);
10638         if (!buf)
10639                 return;
10640
10641         i = snprintf(buf, INFO_STRING_LEN, "Features: PF-id[%d]", hw->pf_id);
10642 #ifdef CONFIG_PCI_IOV
10643         i += snprintf(&buf[i], REMAIN(i), " VFs: %d", pf->num_req_vfs);
10644 #endif
10645         i += snprintf(&buf[i], REMAIN(i), " VSIs: %d QP: %d",
10646                       pf->hw.func_caps.num_vsis,
10647                       pf->vsi[pf->lan_vsi]->num_queue_pairs);
10648         if (pf->flags & I40E_FLAG_RSS_ENABLED)
10649                 i += snprintf(&buf[i], REMAIN(i), " RSS");
10650         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
10651                 i += snprintf(&buf[i], REMAIN(i), " FD_ATR");
10652         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10653                 i += snprintf(&buf[i], REMAIN(i), " FD_SB");
10654                 i += snprintf(&buf[i], REMAIN(i), " NTUPLE");
10655         }
10656         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
10657                 i += snprintf(&buf[i], REMAIN(i), " DCB");
10658         i += snprintf(&buf[i], REMAIN(i), " VxLAN");
10659         i += snprintf(&buf[i], REMAIN(i), " Geneve");
10660         if (pf->flags & I40E_FLAG_PTP)
10661                 i += snprintf(&buf[i], REMAIN(i), " PTP");
10662 #ifdef I40E_FCOE
10663         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
10664                 i += snprintf(&buf[i], REMAIN(i), " FCOE");
10665 #endif
10666         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
10667                 i += snprintf(&buf[i], REMAIN(i), " VEB");
10668         else
10669                 i += snprintf(&buf[i], REMAIN(i), " VEPA");
10670
10671         dev_info(&pf->pdev->dev, "%s\n", buf);
10672         kfree(buf);
10673         WARN_ON(i > INFO_STRING_LEN);
10674 }
10675
10676 /**
10677  * i40e_get_platform_mac_addr - get platform-specific MAC address
10678  *
10679  * @pdev: PCI device information struct
10680  * @pf: board private structure
10681  *
10682  * Look up the MAC address in Open Firmware  on systems that support it,
10683  * and use IDPROM on SPARC if no OF address is found. On return, the
10684  * I40E_FLAG_PF_MAC will be wset in pf->flags if a platform-specific value
10685  * has been selected.
10686  **/
10687 static void i40e_get_platform_mac_addr(struct pci_dev *pdev, struct i40e_pf *pf)
10688 {
10689         pf->flags &= ~I40E_FLAG_PF_MAC;
10690         if (!eth_platform_get_mac_address(&pdev->dev, pf->hw.mac.addr))
10691                 pf->flags |= I40E_FLAG_PF_MAC;
10692 }
10693
10694 /**
10695  * i40e_probe - Device initialization routine
10696  * @pdev: PCI device information struct
10697  * @ent: entry in i40e_pci_tbl
10698  *
10699  * i40e_probe initializes a PF identified by a pci_dev structure.
10700  * The OS initialization, configuring of the PF private structure,
10701  * and a hardware reset occur.
10702  *
10703  * Returns 0 on success, negative on failure
10704  **/
10705 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
10706 {
10707         struct i40e_aq_get_phy_abilities_resp abilities;
10708         struct i40e_pf *pf;
10709         struct i40e_hw *hw;
10710         static u16 pfs_found;
10711         u16 wol_nvm_bits;
10712         u16 link_status;
10713         int err;
10714         u32 val;
10715         u32 i;
10716         u8 set_fc_aq_fail;
10717
10718         err = pci_enable_device_mem(pdev);
10719         if (err)
10720                 return err;
10721
10722         /* set up for high or low dma */
10723         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10724         if (err) {
10725                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10726                 if (err) {
10727                         dev_err(&pdev->dev,
10728                                 "DMA configuration failed: 0x%x\n", err);
10729                         goto err_dma;
10730                 }
10731         }
10732
10733         /* set up pci connections */
10734         err = pci_request_mem_regions(pdev, i40e_driver_name);
10735         if (err) {
10736                 dev_info(&pdev->dev,
10737                          "pci_request_selected_regions failed %d\n", err);
10738                 goto err_pci_reg;
10739         }
10740
10741         pci_enable_pcie_error_reporting(pdev);
10742         pci_set_master(pdev);
10743
10744         /* Now that we have a PCI connection, we need to do the
10745          * low level device setup.  This is primarily setting up
10746          * the Admin Queue structures and then querying for the
10747          * device's current profile information.
10748          */
10749         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
10750         if (!pf) {
10751                 err = -ENOMEM;
10752                 goto err_pf_alloc;
10753         }
10754         pf->next_vsi = 0;
10755         pf->pdev = pdev;
10756         set_bit(__I40E_DOWN, &pf->state);
10757
10758         hw = &pf->hw;
10759         hw->back = pf;
10760
10761         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
10762                                 I40E_MAX_CSR_SPACE);
10763
10764         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
10765         if (!hw->hw_addr) {
10766                 err = -EIO;
10767                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
10768                          (unsigned int)pci_resource_start(pdev, 0),
10769                          pf->ioremap_len, err);
10770                 goto err_ioremap;
10771         }
10772         hw->vendor_id = pdev->vendor;
10773         hw->device_id = pdev->device;
10774         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10775         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10776         hw->subsystem_device_id = pdev->subsystem_device;
10777         hw->bus.device = PCI_SLOT(pdev->devfn);
10778         hw->bus.func = PCI_FUNC(pdev->devfn);
10779         pf->instance = pfs_found;
10780
10781         /* set up the locks for the AQ, do this only once in probe
10782          * and destroy them only once in remove
10783          */
10784         mutex_init(&hw->aq.asq_mutex);
10785         mutex_init(&hw->aq.arq_mutex);
10786
10787         if (debug != -1) {
10788                 pf->msg_enable = pf->hw.debug_mask;
10789                 pf->msg_enable = debug;
10790         }
10791
10792         /* do a special CORER for clearing PXE mode once at init */
10793         if (hw->revision_id == 0 &&
10794             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10795                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10796                 i40e_flush(hw);
10797                 msleep(200);
10798                 pf->corer_count++;
10799
10800                 i40e_clear_pxe_mode(hw);
10801         }
10802
10803         /* Reset here to make sure all is clean and to define PF 'n' */
10804         i40e_clear_hw(hw);
10805         err = i40e_pf_reset(hw);
10806         if (err) {
10807                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10808                 goto err_pf_reset;
10809         }
10810         pf->pfr_count++;
10811
10812         hw->aq.num_arq_entries = I40E_AQ_LEN;
10813         hw->aq.num_asq_entries = I40E_AQ_LEN;
10814         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10815         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10816         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10817
10818         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10819                  "%s-%s:misc",
10820                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10821
10822         err = i40e_init_shared_code(hw);
10823         if (err) {
10824                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10825                          err);
10826                 goto err_pf_reset;
10827         }
10828
10829         /* set up a default setting for link flow control */
10830         pf->hw.fc.requested_mode = I40E_FC_NONE;
10831
10832         err = i40e_init_adminq(hw);
10833         if (err) {
10834                 if (err == I40E_ERR_FIRMWARE_API_VERSION)
10835                         dev_info(&pdev->dev,
10836                                  "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");
10837                 else
10838                         dev_info(&pdev->dev,
10839                                  "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");
10840
10841                 goto err_pf_reset;
10842         }
10843
10844         /* provide nvm, fw, api versions */
10845         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
10846                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
10847                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
10848                  i40e_nvm_version_str(hw));
10849
10850         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10851             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10852                 dev_info(&pdev->dev,
10853                          "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");
10854         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10855                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10856                 dev_info(&pdev->dev,
10857                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10858
10859         i40e_verify_eeprom(pf);
10860
10861         /* Rev 0 hardware was never productized */
10862         if (hw->revision_id < 1)
10863                 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");
10864
10865         i40e_clear_pxe_mode(hw);
10866         err = i40e_get_capabilities(pf);
10867         if (err)
10868                 goto err_adminq_setup;
10869
10870         err = i40e_sw_init(pf);
10871         if (err) {
10872                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10873                 goto err_sw_init;
10874         }
10875
10876         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10877                                 hw->func_caps.num_rx_qp,
10878                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10879         if (err) {
10880                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10881                 goto err_init_lan_hmc;
10882         }
10883
10884         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10885         if (err) {
10886                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10887                 err = -ENOENT;
10888                 goto err_configure_lan_hmc;
10889         }
10890
10891         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10892          * Ignore error return codes because if it was already disabled via
10893          * hardware settings this will fail
10894          */
10895         if (pf->flags & I40E_FLAG_STOP_FW_LLDP) {
10896                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10897                 i40e_aq_stop_lldp(hw, true, NULL);
10898         }
10899
10900         i40e_get_mac_addr(hw, hw->mac.addr);
10901         /* allow a platform config to override the HW addr */
10902         i40e_get_platform_mac_addr(pdev, pf);
10903         if (!is_valid_ether_addr(hw->mac.addr)) {
10904                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10905                 err = -EIO;
10906                 goto err_mac_addr;
10907         }
10908         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10909         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10910         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10911         if (is_valid_ether_addr(hw->mac.port_addr))
10912                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10913 #ifdef I40E_FCOE
10914         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10915         if (err)
10916                 dev_info(&pdev->dev,
10917                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10918         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10919                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10920                          hw->mac.san_addr);
10921                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10922         }
10923         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10924 #endif /* I40E_FCOE */
10925
10926         pci_set_drvdata(pdev, pf);
10927         pci_save_state(pdev);
10928 #ifdef CONFIG_I40E_DCB
10929         err = i40e_init_pf_dcb(pf);
10930         if (err) {
10931                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10932                 pf->flags &= ~(I40E_FLAG_DCB_CAPABLE & I40E_FLAG_DCB_ENABLED);
10933                 /* Continue without DCB enabled */
10934         }
10935 #endif /* CONFIG_I40E_DCB */
10936
10937         /* set up periodic task facility */
10938         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10939         pf->service_timer_period = HZ;
10940
10941         INIT_WORK(&pf->service_task, i40e_service_task);
10942         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10943         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10944
10945         /* NVM bit on means WoL disabled for the port */
10946         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
10947         if (BIT (hw->port) & wol_nvm_bits || hw->partition_id != 1)
10948                 pf->wol_en = false;
10949         else
10950                 pf->wol_en = true;
10951         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10952
10953         /* set up the main switch operations */
10954         i40e_determine_queue_usage(pf);
10955         err = i40e_init_interrupt_scheme(pf);
10956         if (err)
10957                 goto err_switch_setup;
10958
10959         /* The number of VSIs reported by the FW is the minimum guaranteed
10960          * to us; HW supports far more and we share the remaining pool with
10961          * the other PFs. We allocate space for more than the guarantee with
10962          * the understanding that we might not get them all later.
10963          */
10964         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10965                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10966         else
10967                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10968
10969         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10970         pf->vsi = kcalloc(pf->num_alloc_vsi, sizeof(struct i40e_vsi *),
10971                           GFP_KERNEL);
10972         if (!pf->vsi) {
10973                 err = -ENOMEM;
10974                 goto err_switch_setup;
10975         }
10976
10977 #ifdef CONFIG_PCI_IOV
10978         /* prep for VF support */
10979         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10980             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10981             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10982                 if (pci_num_vf(pdev))
10983                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
10984         }
10985 #endif
10986         err = i40e_setup_pf_switch(pf, false);
10987         if (err) {
10988                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
10989                 goto err_vsis;
10990         }
10991
10992         /* Make sure flow control is set according to current settings */
10993         err = i40e_set_fc(hw, &set_fc_aq_fail, true);
10994         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
10995                 dev_dbg(&pf->pdev->dev,
10996                         "Set fc with err %s aq_err %s on get_phy_cap\n",
10997                         i40e_stat_str(hw, err),
10998                         i40e_aq_str(hw, hw->aq.asq_last_status));
10999         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
11000                 dev_dbg(&pf->pdev->dev,
11001                         "Set fc with err %s aq_err %s on set_phy_config\n",
11002                         i40e_stat_str(hw, err),
11003                         i40e_aq_str(hw, hw->aq.asq_last_status));
11004         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
11005                 dev_dbg(&pf->pdev->dev,
11006                         "Set fc with err %s aq_err %s on get_link_info\n",
11007                         i40e_stat_str(hw, err),
11008                         i40e_aq_str(hw, hw->aq.asq_last_status));
11009
11010         /* if FDIR VSI was set up, start it now */
11011         for (i = 0; i < pf->num_alloc_vsi; i++) {
11012                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
11013                         i40e_vsi_open(pf->vsi[i]);
11014                         break;
11015                 }
11016         }
11017
11018         /* The driver only wants link up/down and module qualification
11019          * reports from firmware.  Note the negative logic.
11020          */
11021         err = i40e_aq_set_phy_int_mask(&pf->hw,
11022                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
11023                                          I40E_AQ_EVENT_MEDIA_NA |
11024                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
11025         if (err)
11026                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
11027                          i40e_stat_str(&pf->hw, err),
11028                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11029
11030         /* Reconfigure hardware for allowing smaller MSS in the case
11031          * of TSO, so that we avoid the MDD being fired and causing
11032          * a reset in the case of small MSS+TSO.
11033          */
11034         val = rd32(hw, I40E_REG_MSS);
11035         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
11036                 val &= ~I40E_REG_MSS_MIN_MASK;
11037                 val |= I40E_64BYTE_MSS;
11038                 wr32(hw, I40E_REG_MSS, val);
11039         }
11040
11041         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
11042                 msleep(75);
11043                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
11044                 if (err)
11045                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
11046                                  i40e_stat_str(&pf->hw, err),
11047                                  i40e_aq_str(&pf->hw,
11048                                              pf->hw.aq.asq_last_status));
11049         }
11050         /* The main driver is (mostly) up and happy. We need to set this state
11051          * before setting up the misc vector or we get a race and the vector
11052          * ends up disabled forever.
11053          */
11054         clear_bit(__I40E_DOWN, &pf->state);
11055
11056         /* In case of MSIX we are going to setup the misc vector right here
11057          * to handle admin queue events etc. In case of legacy and MSI
11058          * the misc functionality and queue processing is combined in
11059          * the same vector and that gets setup at open.
11060          */
11061         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
11062                 err = i40e_setup_misc_vector(pf);
11063                 if (err) {
11064                         dev_info(&pdev->dev,
11065                                  "setup of misc vector failed: %d\n", err);
11066                         goto err_vsis;
11067                 }
11068         }
11069
11070 #ifdef CONFIG_PCI_IOV
11071         /* prep for VF support */
11072         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
11073             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
11074             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
11075                 /* disable link interrupts for VFs */
11076                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
11077                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
11078                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
11079                 i40e_flush(hw);
11080
11081                 if (pci_num_vf(pdev)) {
11082                         dev_info(&pdev->dev,
11083                                  "Active VFs found, allocating resources.\n");
11084                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
11085                         if (err)
11086                                 dev_info(&pdev->dev,
11087                                          "Error %d allocating resources for existing VFs\n",
11088                                          err);
11089                 }
11090         }
11091 #endif /* CONFIG_PCI_IOV */
11092
11093         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11094                 pf->iwarp_base_vector = i40e_get_lump(pf, pf->irq_pile,
11095                                                       pf->num_iwarp_msix,
11096                                                       I40E_IWARP_IRQ_PILE_ID);
11097                 if (pf->iwarp_base_vector < 0) {
11098                         dev_info(&pdev->dev,
11099                                  "failed to get tracking for %d vectors for IWARP err=%d\n",
11100                                  pf->num_iwarp_msix, pf->iwarp_base_vector);
11101                         pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
11102                 }
11103         }
11104
11105         i40e_dbg_pf_init(pf);
11106
11107         /* tell the firmware that we're starting */
11108         i40e_send_version(pf);
11109
11110         /* since everything's happy, start the service_task timer */
11111         mod_timer(&pf->service_timer,
11112                   round_jiffies(jiffies + pf->service_timer_period));
11113
11114         /* add this PF to client device list and launch a client service task */
11115         err = i40e_lan_add_device(pf);
11116         if (err)
11117                 dev_info(&pdev->dev, "Failed to add PF to client API service list: %d\n",
11118                          err);
11119
11120 #ifdef I40E_FCOE
11121         /* create FCoE interface */
11122         i40e_fcoe_vsi_setup(pf);
11123
11124 #endif
11125 #define PCI_SPEED_SIZE 8
11126 #define PCI_WIDTH_SIZE 8
11127         /* Devices on the IOSF bus do not have this information
11128          * and will report PCI Gen 1 x 1 by default so don't bother
11129          * checking them.
11130          */
11131         if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
11132                 char speed[PCI_SPEED_SIZE] = "Unknown";
11133                 char width[PCI_WIDTH_SIZE] = "Unknown";
11134
11135                 /* Get the negotiated link width and speed from PCI config
11136                  * space
11137                  */
11138                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
11139                                           &link_status);
11140
11141                 i40e_set_pci_config_data(hw, link_status);
11142
11143                 switch (hw->bus.speed) {
11144                 case i40e_bus_speed_8000:
11145                         strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
11146                 case i40e_bus_speed_5000:
11147                         strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
11148                 case i40e_bus_speed_2500:
11149                         strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
11150                 default:
11151                         break;
11152                 }
11153                 switch (hw->bus.width) {
11154                 case i40e_bus_width_pcie_x8:
11155                         strncpy(width, "8", PCI_WIDTH_SIZE); break;
11156                 case i40e_bus_width_pcie_x4:
11157                         strncpy(width, "4", PCI_WIDTH_SIZE); break;
11158                 case i40e_bus_width_pcie_x2:
11159                         strncpy(width, "2", PCI_WIDTH_SIZE); break;
11160                 case i40e_bus_width_pcie_x1:
11161                         strncpy(width, "1", PCI_WIDTH_SIZE); break;
11162                 default:
11163                         break;
11164                 }
11165
11166                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
11167                          speed, width);
11168
11169                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
11170                     hw->bus.speed < i40e_bus_speed_8000) {
11171                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
11172                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
11173                 }
11174         }
11175
11176         /* get the requested speeds from the fw */
11177         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
11178         if (err)
11179                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
11180                         i40e_stat_str(&pf->hw, err),
11181                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11182         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
11183
11184         /* get the supported phy types from the fw */
11185         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
11186         if (err)
11187                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
11188                         i40e_stat_str(&pf->hw, err),
11189                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11190         pf->hw.phy.phy_types = le32_to_cpu(abilities.phy_type);
11191
11192         /* Add a filter to drop all Flow control frames from any VSI from being
11193          * transmitted. By doing so we stop a malicious VF from sending out
11194          * PAUSE or PFC frames and potentially controlling traffic for other
11195          * PF/VF VSIs.
11196          * The FW can still send Flow control frames if enabled.
11197          */
11198         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
11199                                                        pf->main_vsi_seid);
11200
11201         if ((pf->hw.device_id == I40E_DEV_ID_10G_BASE_T) ||
11202             (pf->hw.device_id == I40E_DEV_ID_10G_BASE_T4))
11203                 pf->flags |= I40E_FLAG_HAVE_10GBASET_PHY;
11204
11205         /* print a string summarizing features */
11206         i40e_print_features(pf);
11207
11208         return 0;
11209
11210         /* Unwind what we've done if something failed in the setup */
11211 err_vsis:
11212         set_bit(__I40E_DOWN, &pf->state);
11213         i40e_clear_interrupt_scheme(pf);
11214         kfree(pf->vsi);
11215 err_switch_setup:
11216         i40e_reset_interrupt_capability(pf);
11217         del_timer_sync(&pf->service_timer);
11218 err_mac_addr:
11219 err_configure_lan_hmc:
11220         (void)i40e_shutdown_lan_hmc(hw);
11221 err_init_lan_hmc:
11222         kfree(pf->qp_pile);
11223 err_sw_init:
11224 err_adminq_setup:
11225 err_pf_reset:
11226         iounmap(hw->hw_addr);
11227 err_ioremap:
11228         kfree(pf);
11229 err_pf_alloc:
11230         pci_disable_pcie_error_reporting(pdev);
11231         pci_release_mem_regions(pdev);
11232 err_pci_reg:
11233 err_dma:
11234         pci_disable_device(pdev);
11235         return err;
11236 }
11237
11238 /**
11239  * i40e_remove - Device removal routine
11240  * @pdev: PCI device information struct
11241  *
11242  * i40e_remove is called by the PCI subsystem to alert the driver
11243  * that is should release a PCI device.  This could be caused by a
11244  * Hot-Plug event, or because the driver is going to be removed from
11245  * memory.
11246  **/
11247 static void i40e_remove(struct pci_dev *pdev)
11248 {
11249         struct i40e_pf *pf = pci_get_drvdata(pdev);
11250         struct i40e_hw *hw = &pf->hw;
11251         i40e_status ret_code;
11252         int i;
11253
11254         i40e_dbg_pf_exit(pf);
11255
11256         i40e_ptp_stop(pf);
11257
11258         /* Disable RSS in hw */
11259         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), 0);
11260         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), 0);
11261
11262         /* no more scheduling of any task */
11263         set_bit(__I40E_SUSPENDED, &pf->state);
11264         set_bit(__I40E_DOWN, &pf->state);
11265         if (pf->service_timer.data)
11266                 del_timer_sync(&pf->service_timer);
11267         if (pf->service_task.func)
11268                 cancel_work_sync(&pf->service_task);
11269
11270         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
11271                 i40e_free_vfs(pf);
11272                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
11273         }
11274
11275         i40e_fdir_teardown(pf);
11276
11277         /* If there is a switch structure or any orphans, remove them.
11278          * This will leave only the PF's VSI remaining.
11279          */
11280         for (i = 0; i < I40E_MAX_VEB; i++) {
11281                 if (!pf->veb[i])
11282                         continue;
11283
11284                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
11285                     pf->veb[i]->uplink_seid == 0)
11286                         i40e_switch_branch_release(pf->veb[i]);
11287         }
11288
11289         /* Now we can shutdown the PF's VSI, just before we kill
11290          * adminq and hmc.
11291          */
11292         if (pf->vsi[pf->lan_vsi])
11293                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
11294
11295         /* remove attached clients */
11296         ret_code = i40e_lan_del_device(pf);
11297         if (ret_code) {
11298                 dev_warn(&pdev->dev, "Failed to delete client device: %d\n",
11299                          ret_code);
11300         }
11301
11302         /* shutdown and destroy the HMC */
11303         if (hw->hmc.hmc_obj) {
11304                 ret_code = i40e_shutdown_lan_hmc(hw);
11305                 if (ret_code)
11306                         dev_warn(&pdev->dev,
11307                                  "Failed to destroy the HMC resources: %d\n",
11308                                  ret_code);
11309         }
11310
11311         /* shutdown the adminq */
11312         ret_code = i40e_shutdown_adminq(hw);
11313         if (ret_code)
11314                 dev_warn(&pdev->dev,
11315                          "Failed to destroy the Admin Queue resources: %d\n",
11316                          ret_code);
11317
11318         /* destroy the locks only once, here */
11319         mutex_destroy(&hw->aq.arq_mutex);
11320         mutex_destroy(&hw->aq.asq_mutex);
11321
11322         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
11323         i40e_clear_interrupt_scheme(pf);
11324         for (i = 0; i < pf->num_alloc_vsi; i++) {
11325                 if (pf->vsi[i]) {
11326                         i40e_vsi_clear_rings(pf->vsi[i]);
11327                         i40e_vsi_clear(pf->vsi[i]);
11328                         pf->vsi[i] = NULL;
11329                 }
11330         }
11331
11332         for (i = 0; i < I40E_MAX_VEB; i++) {
11333                 kfree(pf->veb[i]);
11334                 pf->veb[i] = NULL;
11335         }
11336
11337         kfree(pf->qp_pile);
11338         kfree(pf->vsi);
11339
11340         iounmap(hw->hw_addr);
11341         kfree(pf);
11342         pci_release_mem_regions(pdev);
11343
11344         pci_disable_pcie_error_reporting(pdev);
11345         pci_disable_device(pdev);
11346 }
11347
11348 /**
11349  * i40e_pci_error_detected - warning that something funky happened in PCI land
11350  * @pdev: PCI device information struct
11351  *
11352  * Called to warn that something happened and the error handling steps
11353  * are in progress.  Allows the driver to quiesce things, be ready for
11354  * remediation.
11355  **/
11356 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
11357                                                 enum pci_channel_state error)
11358 {
11359         struct i40e_pf *pf = pci_get_drvdata(pdev);
11360
11361         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
11362
11363         /* shutdown all operations */
11364         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
11365                 rtnl_lock();
11366                 i40e_prep_for_reset(pf);
11367                 rtnl_unlock();
11368         }
11369
11370         /* Request a slot reset */
11371         return PCI_ERS_RESULT_NEED_RESET;
11372 }
11373
11374 /**
11375  * i40e_pci_error_slot_reset - a PCI slot reset just happened
11376  * @pdev: PCI device information struct
11377  *
11378  * Called to find if the driver can work with the device now that
11379  * the pci slot has been reset.  If a basic connection seems good
11380  * (registers are readable and have sane content) then return a
11381  * happy little PCI_ERS_RESULT_xxx.
11382  **/
11383 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
11384 {
11385         struct i40e_pf *pf = pci_get_drvdata(pdev);
11386         pci_ers_result_t result;
11387         int err;
11388         u32 reg;
11389
11390         dev_dbg(&pdev->dev, "%s\n", __func__);
11391         if (pci_enable_device_mem(pdev)) {
11392                 dev_info(&pdev->dev,
11393                          "Cannot re-enable PCI device after reset.\n");
11394                 result = PCI_ERS_RESULT_DISCONNECT;
11395         } else {
11396                 pci_set_master(pdev);
11397                 pci_restore_state(pdev);
11398                 pci_save_state(pdev);
11399                 pci_wake_from_d3(pdev, false);
11400
11401                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
11402                 if (reg == 0)
11403                         result = PCI_ERS_RESULT_RECOVERED;
11404                 else
11405                         result = PCI_ERS_RESULT_DISCONNECT;
11406         }
11407
11408         err = pci_cleanup_aer_uncorrect_error_status(pdev);
11409         if (err) {
11410                 dev_info(&pdev->dev,
11411                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
11412                          err);
11413                 /* non-fatal, continue */
11414         }
11415
11416         return result;
11417 }
11418
11419 /**
11420  * i40e_pci_error_resume - restart operations after PCI error recovery
11421  * @pdev: PCI device information struct
11422  *
11423  * Called to allow the driver to bring things back up after PCI error
11424  * and/or reset recovery has finished.
11425  **/
11426 static void i40e_pci_error_resume(struct pci_dev *pdev)
11427 {
11428         struct i40e_pf *pf = pci_get_drvdata(pdev);
11429
11430         dev_dbg(&pdev->dev, "%s\n", __func__);
11431         if (test_bit(__I40E_SUSPENDED, &pf->state))
11432                 return;
11433
11434         rtnl_lock();
11435         i40e_handle_reset_warning(pf);
11436         rtnl_unlock();
11437 }
11438
11439 /**
11440  * i40e_shutdown - PCI callback for shutting down
11441  * @pdev: PCI device information struct
11442  **/
11443 static void i40e_shutdown(struct pci_dev *pdev)
11444 {
11445         struct i40e_pf *pf = pci_get_drvdata(pdev);
11446         struct i40e_hw *hw = &pf->hw;
11447
11448         set_bit(__I40E_SUSPENDED, &pf->state);
11449         set_bit(__I40E_DOWN, &pf->state);
11450         rtnl_lock();
11451         i40e_prep_for_reset(pf);
11452         rtnl_unlock();
11453
11454         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11455         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11456
11457         del_timer_sync(&pf->service_timer);
11458         cancel_work_sync(&pf->service_task);
11459         i40e_fdir_teardown(pf);
11460
11461         rtnl_lock();
11462         i40e_prep_for_reset(pf);
11463         rtnl_unlock();
11464
11465         wr32(hw, I40E_PFPM_APM,
11466              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11467         wr32(hw, I40E_PFPM_WUFC,
11468              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11469
11470         i40e_clear_interrupt_scheme(pf);
11471
11472         if (system_state == SYSTEM_POWER_OFF) {
11473                 pci_wake_from_d3(pdev, pf->wol_en);
11474                 pci_set_power_state(pdev, PCI_D3hot);
11475         }
11476 }
11477
11478 #ifdef CONFIG_PM
11479 /**
11480  * i40e_suspend - PCI callback for moving to D3
11481  * @pdev: PCI device information struct
11482  **/
11483 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
11484 {
11485         struct i40e_pf *pf = pci_get_drvdata(pdev);
11486         struct i40e_hw *hw = &pf->hw;
11487         int retval = 0;
11488
11489         set_bit(__I40E_SUSPENDED, &pf->state);
11490         set_bit(__I40E_DOWN, &pf->state);
11491
11492         rtnl_lock();
11493         i40e_prep_for_reset(pf);
11494         rtnl_unlock();
11495
11496         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11497         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11498
11499         i40e_stop_misc_vector(pf);
11500
11501         retval = pci_save_state(pdev);
11502         if (retval)
11503                 return retval;
11504
11505         pci_wake_from_d3(pdev, pf->wol_en);
11506         pci_set_power_state(pdev, PCI_D3hot);
11507
11508         return retval;
11509 }
11510
11511 /**
11512  * i40e_resume - PCI callback for waking up from D3
11513  * @pdev: PCI device information struct
11514  **/
11515 static int i40e_resume(struct pci_dev *pdev)
11516 {
11517         struct i40e_pf *pf = pci_get_drvdata(pdev);
11518         u32 err;
11519
11520         pci_set_power_state(pdev, PCI_D0);
11521         pci_restore_state(pdev);
11522         /* pci_restore_state() clears dev->state_saves, so
11523          * call pci_save_state() again to restore it.
11524          */
11525         pci_save_state(pdev);
11526
11527         err = pci_enable_device_mem(pdev);
11528         if (err) {
11529                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
11530                 return err;
11531         }
11532         pci_set_master(pdev);
11533
11534         /* no wakeup events while running */
11535         pci_wake_from_d3(pdev, false);
11536
11537         /* handling the reset will rebuild the device state */
11538         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
11539                 clear_bit(__I40E_DOWN, &pf->state);
11540                 rtnl_lock();
11541                 i40e_reset_and_rebuild(pf, false);
11542                 rtnl_unlock();
11543         }
11544
11545         return 0;
11546 }
11547
11548 #endif
11549 static const struct pci_error_handlers i40e_err_handler = {
11550         .error_detected = i40e_pci_error_detected,
11551         .slot_reset = i40e_pci_error_slot_reset,
11552         .resume = i40e_pci_error_resume,
11553 };
11554
11555 static struct pci_driver i40e_driver = {
11556         .name     = i40e_driver_name,
11557         .id_table = i40e_pci_tbl,
11558         .probe    = i40e_probe,
11559         .remove   = i40e_remove,
11560 #ifdef CONFIG_PM
11561         .suspend  = i40e_suspend,
11562         .resume   = i40e_resume,
11563 #endif
11564         .shutdown = i40e_shutdown,
11565         .err_handler = &i40e_err_handler,
11566         .sriov_configure = i40e_pci_sriov_configure,
11567 };
11568
11569 /**
11570  * i40e_init_module - Driver registration routine
11571  *
11572  * i40e_init_module is the first routine called when the driver is
11573  * loaded. All it does is register with the PCI subsystem.
11574  **/
11575 static int __init i40e_init_module(void)
11576 {
11577         pr_info("%s: %s - version %s\n", i40e_driver_name,
11578                 i40e_driver_string, i40e_driver_version_str);
11579         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
11580
11581         /* we will see if single thread per module is enough for now,
11582          * it can't be any worse than using the system workqueue which
11583          * was already single threaded
11584          */
11585         i40e_wq = create_singlethread_workqueue(i40e_driver_name);
11586         if (!i40e_wq) {
11587                 pr_err("%s: Failed to create workqueue\n", i40e_driver_name);
11588                 return -ENOMEM;
11589         }
11590
11591         i40e_dbg_init();
11592         return pci_register_driver(&i40e_driver);
11593 }
11594 module_init(i40e_init_module);
11595
11596 /**
11597  * i40e_exit_module - Driver exit cleanup routine
11598  *
11599  * i40e_exit_module is called just before the driver is removed
11600  * from memory.
11601  **/
11602 static void __exit i40e_exit_module(void)
11603 {
11604         pci_unregister_driver(&i40e_driver);
11605         destroy_workqueue(i40e_wq);
11606         i40e_dbg_exit();
11607 }
11608 module_exit(i40e_exit_module);