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         u8 num_tc = 0;
4558         int i;
4559
4560         /* Scan the ETS Config Priority Table to find
4561          * traffic class enabled for a given priority
4562          * and use the traffic class index to get the
4563          * number of traffic classes enabled
4564          */
4565         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4566                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4567                         num_tc = dcbcfg->etscfg.prioritytable[i];
4568         }
4569
4570         /* Traffic class index starts from zero so
4571          * increment to return the actual count
4572          */
4573         return num_tc + 1;
4574 }
4575
4576 /**
4577  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4578  * @dcbcfg: the corresponding DCBx configuration structure
4579  *
4580  * Query the current DCB configuration and return the number of
4581  * traffic classes enabled from the given DCBX config
4582  **/
4583 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4584 {
4585         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4586         u8 enabled_tc = 1;
4587         u8 i;
4588
4589         for (i = 0; i < num_tc; i++)
4590                 enabled_tc |= BIT(i);
4591
4592         return enabled_tc;
4593 }
4594
4595 /**
4596  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4597  * @pf: PF being queried
4598  *
4599  * Return number of traffic classes enabled for the given PF
4600  **/
4601 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4602 {
4603         struct i40e_hw *hw = &pf->hw;
4604         u8 i, enabled_tc;
4605         u8 num_tc = 0;
4606         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4607
4608         /* If DCB is not enabled then always in single TC */
4609         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4610                 return 1;
4611
4612         /* SFP mode will be enabled for all TCs on port */
4613         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4614                 return i40e_dcb_get_num_tc(dcbcfg);
4615
4616         /* MFP mode return count of enabled TCs for this PF */
4617         if (pf->hw.func_caps.iscsi)
4618                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4619         else
4620                 return 1; /* Only TC0 */
4621
4622         /* At least have TC0 */
4623         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4624         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4625                 if (enabled_tc & BIT(i))
4626                         num_tc++;
4627         }
4628         return num_tc;
4629 }
4630
4631 /**
4632  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4633  * @pf: PF being queried
4634  *
4635  * Return a bitmap for first enabled traffic class for this PF.
4636  **/
4637 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4638 {
4639         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4640         u8 i = 0;
4641
4642         if (!enabled_tc)
4643                 return 0x1; /* TC0 */
4644
4645         /* Find the first enabled TC */
4646         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4647                 if (enabled_tc & BIT(i))
4648                         break;
4649         }
4650
4651         return BIT(i);
4652 }
4653
4654 /**
4655  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4656  * @pf: PF being queried
4657  *
4658  * Return a bitmap for enabled traffic classes for this PF.
4659  **/
4660 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4661 {
4662         /* If DCB is not enabled for this PF then just return default TC */
4663         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4664                 return i40e_pf_get_default_tc(pf);
4665
4666         /* SFP mode we want PF to be enabled for all TCs */
4667         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4668                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4669
4670         /* MFP enabled and iSCSI PF type */
4671         if (pf->hw.func_caps.iscsi)
4672                 return i40e_get_iscsi_tc_map(pf);
4673         else
4674                 return i40e_pf_get_default_tc(pf);
4675 }
4676
4677 /**
4678  * i40e_vsi_get_bw_info - Query VSI BW Information
4679  * @vsi: the VSI being queried
4680  *
4681  * Returns 0 on success, negative value on failure
4682  **/
4683 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4684 {
4685         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4686         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4687         struct i40e_pf *pf = vsi->back;
4688         struct i40e_hw *hw = &pf->hw;
4689         i40e_status ret;
4690         u32 tc_bw_max;
4691         int i;
4692
4693         /* Get the VSI level BW configuration */
4694         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4695         if (ret) {
4696                 dev_info(&pf->pdev->dev,
4697                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4698                          i40e_stat_str(&pf->hw, ret),
4699                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4700                 return -EINVAL;
4701         }
4702
4703         /* Get the VSI level BW configuration per TC */
4704         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4705                                                NULL);
4706         if (ret) {
4707                 dev_info(&pf->pdev->dev,
4708                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4709                          i40e_stat_str(&pf->hw, ret),
4710                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4711                 return -EINVAL;
4712         }
4713
4714         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4715                 dev_info(&pf->pdev->dev,
4716                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4717                          bw_config.tc_valid_bits,
4718                          bw_ets_config.tc_valid_bits);
4719                 /* Still continuing */
4720         }
4721
4722         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4723         vsi->bw_max_quanta = bw_config.max_bw;
4724         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4725                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4726         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4727                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4728                 vsi->bw_ets_limit_credits[i] =
4729                                         le16_to_cpu(bw_ets_config.credits[i]);
4730                 /* 3 bits out of 4 for each TC */
4731                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4732         }
4733
4734         return 0;
4735 }
4736
4737 /**
4738  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4739  * @vsi: the VSI being configured
4740  * @enabled_tc: TC bitmap
4741  * @bw_credits: BW shared credits per TC
4742  *
4743  * Returns 0 on success, negative value on failure
4744  **/
4745 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4746                                        u8 *bw_share)
4747 {
4748         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4749         i40e_status ret;
4750         int i;
4751
4752         bw_data.tc_valid_bits = enabled_tc;
4753         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4754                 bw_data.tc_bw_credits[i] = bw_share[i];
4755
4756         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4757                                        NULL);
4758         if (ret) {
4759                 dev_info(&vsi->back->pdev->dev,
4760                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4761                          vsi->back->hw.aq.asq_last_status);
4762                 return -EINVAL;
4763         }
4764
4765         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4766                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4767
4768         return 0;
4769 }
4770
4771 /**
4772  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4773  * @vsi: the VSI being configured
4774  * @enabled_tc: TC map to be enabled
4775  *
4776  **/
4777 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4778 {
4779         struct net_device *netdev = vsi->netdev;
4780         struct i40e_pf *pf = vsi->back;
4781         struct i40e_hw *hw = &pf->hw;
4782         u8 netdev_tc = 0;
4783         int i;
4784         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4785
4786         if (!netdev)
4787                 return;
4788
4789         if (!enabled_tc) {
4790                 netdev_reset_tc(netdev);
4791                 return;
4792         }
4793
4794         /* Set up actual enabled TCs on the VSI */
4795         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4796                 return;
4797
4798         /* set per TC queues for the VSI */
4799         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4800                 /* Only set TC queues for enabled tcs
4801                  *
4802                  * e.g. For a VSI that has TC0 and TC3 enabled the
4803                  * enabled_tc bitmap would be 0x00001001; the driver
4804                  * will set the numtc for netdev as 2 that will be
4805                  * referenced by the netdev layer as TC 0 and 1.
4806                  */
4807                 if (vsi->tc_config.enabled_tc & BIT(i))
4808                         netdev_set_tc_queue(netdev,
4809                                         vsi->tc_config.tc_info[i].netdev_tc,
4810                                         vsi->tc_config.tc_info[i].qcount,
4811                                         vsi->tc_config.tc_info[i].qoffset);
4812         }
4813
4814         /* Assign UP2TC map for the VSI */
4815         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4816                 /* Get the actual TC# for the UP */
4817                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4818                 /* Get the mapped netdev TC# for the UP */
4819                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4820                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4821         }
4822 }
4823
4824 /**
4825  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4826  * @vsi: the VSI being configured
4827  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4828  **/
4829 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4830                                       struct i40e_vsi_context *ctxt)
4831 {
4832         /* copy just the sections touched not the entire info
4833          * since not all sections are valid as returned by
4834          * update vsi params
4835          */
4836         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4837         memcpy(&vsi->info.queue_mapping,
4838                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4839         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4840                sizeof(vsi->info.tc_mapping));
4841 }
4842
4843 /**
4844  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4845  * @vsi: VSI to be configured
4846  * @enabled_tc: TC bitmap
4847  *
4848  * This configures a particular VSI for TCs that are mapped to the
4849  * given TC bitmap. It uses default bandwidth share for TCs across
4850  * VSIs to configure TC for a particular VSI.
4851  *
4852  * NOTE:
4853  * It is expected that the VSI queues have been quisced before calling
4854  * this function.
4855  **/
4856 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4857 {
4858         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4859         struct i40e_vsi_context ctxt;
4860         int ret = 0;
4861         int i;
4862
4863         /* Check if enabled_tc is same as existing or new TCs */
4864         if (vsi->tc_config.enabled_tc == enabled_tc)
4865                 return ret;
4866
4867         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4868         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4869                 if (enabled_tc & BIT(i))
4870                         bw_share[i] = 1;
4871         }
4872
4873         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4874         if (ret) {
4875                 dev_info(&vsi->back->pdev->dev,
4876                          "Failed configuring TC map %d for VSI %d\n",
4877                          enabled_tc, vsi->seid);
4878                 goto out;
4879         }
4880
4881         /* Update Queue Pairs Mapping for currently enabled UPs */
4882         ctxt.seid = vsi->seid;
4883         ctxt.pf_num = vsi->back->hw.pf_id;
4884         ctxt.vf_num = 0;
4885         ctxt.uplink_seid = vsi->uplink_seid;
4886         ctxt.info = vsi->info;
4887         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4888
4889         if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
4890                 ctxt.info.valid_sections |=
4891                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
4892                 ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA;
4893         }
4894
4895         /* Update the VSI after updating the VSI queue-mapping information */
4896         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4897         if (ret) {
4898                 dev_info(&vsi->back->pdev->dev,
4899                          "Update vsi tc config failed, err %s aq_err %s\n",
4900                          i40e_stat_str(&vsi->back->hw, ret),
4901                          i40e_aq_str(&vsi->back->hw,
4902                                      vsi->back->hw.aq.asq_last_status));
4903                 goto out;
4904         }
4905         /* update the local VSI info with updated queue map */
4906         i40e_vsi_update_queue_map(vsi, &ctxt);
4907         vsi->info.valid_sections = 0;
4908
4909         /* Update current VSI BW information */
4910         ret = i40e_vsi_get_bw_info(vsi);
4911         if (ret) {
4912                 dev_info(&vsi->back->pdev->dev,
4913                          "Failed updating vsi bw info, err %s aq_err %s\n",
4914                          i40e_stat_str(&vsi->back->hw, ret),
4915                          i40e_aq_str(&vsi->back->hw,
4916                                      vsi->back->hw.aq.asq_last_status));
4917                 goto out;
4918         }
4919
4920         /* Update the netdev TC setup */
4921         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4922 out:
4923         return ret;
4924 }
4925
4926 /**
4927  * i40e_veb_config_tc - Configure TCs for given VEB
4928  * @veb: given VEB
4929  * @enabled_tc: TC bitmap
4930  *
4931  * Configures given TC bitmap for VEB (switching) element
4932  **/
4933 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4934 {
4935         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4936         struct i40e_pf *pf = veb->pf;
4937         int ret = 0;
4938         int i;
4939
4940         /* No TCs or already enabled TCs just return */
4941         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4942                 return ret;
4943
4944         bw_data.tc_valid_bits = enabled_tc;
4945         /* bw_data.absolute_credits is not set (relative) */
4946
4947         /* Enable ETS TCs with equal BW Share for now */
4948         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4949                 if (enabled_tc & BIT(i))
4950                         bw_data.tc_bw_share_credits[i] = 1;
4951         }
4952
4953         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4954                                                    &bw_data, NULL);
4955         if (ret) {
4956                 dev_info(&pf->pdev->dev,
4957                          "VEB bw config failed, err %s aq_err %s\n",
4958                          i40e_stat_str(&pf->hw, ret),
4959                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4960                 goto out;
4961         }
4962
4963         /* Update the BW information */
4964         ret = i40e_veb_get_bw_info(veb);
4965         if (ret) {
4966                 dev_info(&pf->pdev->dev,
4967                          "Failed getting veb bw config, err %s aq_err %s\n",
4968                          i40e_stat_str(&pf->hw, ret),
4969                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4970         }
4971
4972 out:
4973         return ret;
4974 }
4975
4976 #ifdef CONFIG_I40E_DCB
4977 /**
4978  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4979  * @pf: PF struct
4980  *
4981  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4982  * the caller would've quiesce all the VSIs before calling
4983  * this function
4984  **/
4985 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4986 {
4987         u8 tc_map = 0;
4988         int ret;
4989         u8 v;
4990
4991         /* Enable the TCs available on PF to all VEBs */
4992         tc_map = i40e_pf_get_tc_map(pf);
4993         for (v = 0; v < I40E_MAX_VEB; v++) {
4994                 if (!pf->veb[v])
4995                         continue;
4996                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4997                 if (ret) {
4998                         dev_info(&pf->pdev->dev,
4999                                  "Failed configuring TC for VEB seid=%d\n",
5000                                  pf->veb[v]->seid);
5001                         /* Will try to configure as many components */
5002                 }
5003         }
5004
5005         /* Update each VSI */
5006         for (v = 0; v < pf->num_alloc_vsi; v++) {
5007                 if (!pf->vsi[v])
5008                         continue;
5009
5010                 /* - Enable all TCs for the LAN VSI
5011 #ifdef I40E_FCOE
5012                  * - For FCoE VSI only enable the TC configured
5013                  *   as per the APP TLV
5014 #endif
5015                  * - For all others keep them at TC0 for now
5016                  */
5017                 if (v == pf->lan_vsi)
5018                         tc_map = i40e_pf_get_tc_map(pf);
5019                 else
5020                         tc_map = i40e_pf_get_default_tc(pf);
5021 #ifdef I40E_FCOE
5022                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
5023                         tc_map = i40e_get_fcoe_tc_map(pf);
5024 #endif /* #ifdef I40E_FCOE */
5025
5026                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
5027                 if (ret) {
5028                         dev_info(&pf->pdev->dev,
5029                                  "Failed configuring TC for VSI seid=%d\n",
5030                                  pf->vsi[v]->seid);
5031                         /* Will try to configure as many components */
5032                 } else {
5033                         /* Re-configure VSI vectors based on updated TC map */
5034                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
5035                         if (pf->vsi[v]->netdev)
5036                                 i40e_dcbnl_set_all(pf->vsi[v]);
5037                 }
5038         }
5039 }
5040
5041 /**
5042  * i40e_resume_port_tx - Resume port Tx
5043  * @pf: PF struct
5044  *
5045  * Resume a port's Tx and issue a PF reset in case of failure to
5046  * resume.
5047  **/
5048 static int i40e_resume_port_tx(struct i40e_pf *pf)
5049 {
5050         struct i40e_hw *hw = &pf->hw;
5051         int ret;
5052
5053         ret = i40e_aq_resume_port_tx(hw, NULL);
5054         if (ret) {
5055                 dev_info(&pf->pdev->dev,
5056                          "Resume Port Tx failed, err %s aq_err %s\n",
5057                           i40e_stat_str(&pf->hw, ret),
5058                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5059                 /* Schedule PF reset to recover */
5060                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5061                 i40e_service_event_schedule(pf);
5062         }
5063
5064         return ret;
5065 }
5066
5067 /**
5068  * i40e_init_pf_dcb - Initialize DCB configuration
5069  * @pf: PF being configured
5070  *
5071  * Query the current DCB configuration and cache it
5072  * in the hardware structure
5073  **/
5074 static int i40e_init_pf_dcb(struct i40e_pf *pf)
5075 {
5076         struct i40e_hw *hw = &pf->hw;
5077         int err = 0;
5078
5079         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
5080         if (pf->flags & I40E_FLAG_NO_DCB_SUPPORT)
5081                 goto out;
5082
5083         /* Get the initial DCB configuration */
5084         err = i40e_init_dcb(hw);
5085         if (!err) {
5086                 /* Device/Function is not DCBX capable */
5087                 if ((!hw->func_caps.dcb) ||
5088                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
5089                         dev_info(&pf->pdev->dev,
5090                                  "DCBX offload is not supported or is disabled for this PF.\n");
5091
5092                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
5093                                 goto out;
5094
5095                 } else {
5096                         /* When status is not DISABLED then DCBX in FW */
5097                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
5098                                        DCB_CAP_DCBX_VER_IEEE;
5099
5100                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
5101                         /* Enable DCB tagging only when more than one TC */
5102                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5103                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5104                         dev_dbg(&pf->pdev->dev,
5105                                 "DCBX offload is supported for this PF.\n");
5106                 }
5107         } else {
5108                 dev_info(&pf->pdev->dev,
5109                          "Query for DCB configuration failed, err %s aq_err %s\n",
5110                          i40e_stat_str(&pf->hw, err),
5111                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5112         }
5113
5114 out:
5115         return err;
5116 }
5117 #endif /* CONFIG_I40E_DCB */
5118 #define SPEED_SIZE 14
5119 #define FC_SIZE 8
5120 /**
5121  * i40e_print_link_message - print link up or down
5122  * @vsi: the VSI for which link needs a message
5123  */
5124 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
5125 {
5126         char *speed = "Unknown";
5127         char *fc = "Unknown";
5128
5129         if (vsi->current_isup == isup)
5130                 return;
5131         vsi->current_isup = isup;
5132         if (!isup) {
5133                 netdev_info(vsi->netdev, "NIC Link is Down\n");
5134                 return;
5135         }
5136
5137         /* Warn user if link speed on NPAR enabled partition is not at
5138          * least 10GB
5139          */
5140         if (vsi->back->hw.func_caps.npar_enable &&
5141             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
5142              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
5143                 netdev_warn(vsi->netdev,
5144                             "The partition detected link speed that is less than 10Gbps\n");
5145
5146         switch (vsi->back->hw.phy.link_info.link_speed) {
5147         case I40E_LINK_SPEED_40GB:
5148                 speed = "40 G";
5149                 break;
5150         case I40E_LINK_SPEED_20GB:
5151                 speed = "20 G";
5152                 break;
5153         case I40E_LINK_SPEED_10GB:
5154                 speed = "10 G";
5155                 break;
5156         case I40E_LINK_SPEED_1GB:
5157                 speed = "1000 M";
5158                 break;
5159         case I40E_LINK_SPEED_100MB:
5160                 speed = "100 M";
5161                 break;
5162         default:
5163                 break;
5164         }
5165
5166         switch (vsi->back->hw.fc.current_mode) {
5167         case I40E_FC_FULL:
5168                 fc = "RX/TX";
5169                 break;
5170         case I40E_FC_TX_PAUSE:
5171                 fc = "TX";
5172                 break;
5173         case I40E_FC_RX_PAUSE:
5174                 fc = "RX";
5175                 break;
5176         default:
5177                 fc = "None";
5178                 break;
5179         }
5180
5181         netdev_info(vsi->netdev, "NIC Link is Up %sbps Full Duplex, Flow Control: %s\n",
5182                     speed, fc);
5183 }
5184
5185 /**
5186  * i40e_up_complete - Finish the last steps of bringing up a connection
5187  * @vsi: the VSI being configured
5188  **/
5189 static int i40e_up_complete(struct i40e_vsi *vsi)
5190 {
5191         struct i40e_pf *pf = vsi->back;
5192         int err;
5193
5194         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5195                 i40e_vsi_configure_msix(vsi);
5196         else
5197                 i40e_configure_msi_and_legacy(vsi);
5198
5199         /* start rings */
5200         err = i40e_vsi_control_rings(vsi, true);
5201         if (err)
5202                 return err;
5203
5204         clear_bit(__I40E_DOWN, &vsi->state);
5205         i40e_napi_enable_all(vsi);
5206         i40e_vsi_enable_irq(vsi);
5207
5208         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
5209             (vsi->netdev)) {
5210                 i40e_print_link_message(vsi, true);
5211                 netif_tx_start_all_queues(vsi->netdev);
5212                 netif_carrier_on(vsi->netdev);
5213         } else if (vsi->netdev) {
5214                 i40e_print_link_message(vsi, false);
5215                 /* need to check for qualified module here*/
5216                 if ((pf->hw.phy.link_info.link_info &
5217                         I40E_AQ_MEDIA_AVAILABLE) &&
5218                     (!(pf->hw.phy.link_info.an_info &
5219                         I40E_AQ_QUALIFIED_MODULE)))
5220                         netdev_err(vsi->netdev,
5221                                    "the driver failed to link because an unqualified module was detected.");
5222         }
5223
5224         /* replay FDIR SB filters */
5225         if (vsi->type == I40E_VSI_FDIR) {
5226                 /* reset fd counters */
5227                 pf->fd_add_err = pf->fd_atr_cnt = 0;
5228                 if (pf->fd_tcp_rule > 0) {
5229                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5230                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5231                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
5232                         pf->fd_tcp_rule = 0;
5233                 }
5234                 i40e_fdir_filter_restore(vsi);
5235         }
5236
5237         /* On the next run of the service_task, notify any clients of the new
5238          * opened netdev
5239          */
5240         pf->flags |= I40E_FLAG_SERVICE_CLIENT_REQUESTED;
5241         i40e_service_event_schedule(pf);
5242
5243         return 0;
5244 }
5245
5246 /**
5247  * i40e_vsi_reinit_locked - Reset the VSI
5248  * @vsi: the VSI being configured
5249  *
5250  * Rebuild the ring structs after some configuration
5251  * has changed, e.g. MTU size.
5252  **/
5253 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
5254 {
5255         struct i40e_pf *pf = vsi->back;
5256
5257         WARN_ON(in_interrupt());
5258         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
5259                 usleep_range(1000, 2000);
5260         i40e_down(vsi);
5261
5262         i40e_up(vsi);
5263         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
5264 }
5265
5266 /**
5267  * i40e_up - Bring the connection back up after being down
5268  * @vsi: the VSI being configured
5269  **/
5270 int i40e_up(struct i40e_vsi *vsi)
5271 {
5272         int err;
5273
5274         err = i40e_vsi_configure(vsi);
5275         if (!err)
5276                 err = i40e_up_complete(vsi);
5277
5278         return err;
5279 }
5280
5281 /**
5282  * i40e_down - Shutdown the connection processing
5283  * @vsi: the VSI being stopped
5284  **/
5285 void i40e_down(struct i40e_vsi *vsi)
5286 {
5287         int i;
5288
5289         /* It is assumed that the caller of this function
5290          * sets the vsi->state __I40E_DOWN bit.
5291          */
5292         if (vsi->netdev) {
5293                 netif_carrier_off(vsi->netdev);
5294                 netif_tx_disable(vsi->netdev);
5295         }
5296         i40e_vsi_disable_irq(vsi);
5297         i40e_vsi_control_rings(vsi, false);
5298         i40e_napi_disable_all(vsi);
5299
5300         for (i = 0; i < vsi->num_queue_pairs; i++) {
5301                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5302                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5303         }
5304
5305         i40e_notify_client_of_netdev_close(vsi, false);
5306
5307 }
5308
5309 /**
5310  * i40e_setup_tc - configure multiple traffic classes
5311  * @netdev: net device to configure
5312  * @tc: number of traffic classes to enable
5313  **/
5314 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5315 {
5316         struct i40e_netdev_priv *np = netdev_priv(netdev);
5317         struct i40e_vsi *vsi = np->vsi;
5318         struct i40e_pf *pf = vsi->back;
5319         u8 enabled_tc = 0;
5320         int ret = -EINVAL;
5321         int i;
5322
5323         /* Check if DCB enabled to continue */
5324         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5325                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5326                 goto exit;
5327         }
5328
5329         /* Check if MFP enabled */
5330         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5331                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5332                 goto exit;
5333         }
5334
5335         /* Check whether tc count is within enabled limit */
5336         if (tc > i40e_pf_get_num_tc(pf)) {
5337                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5338                 goto exit;
5339         }
5340
5341         /* Generate TC map for number of tc requested */
5342         for (i = 0; i < tc; i++)
5343                 enabled_tc |= BIT(i);
5344
5345         /* Requesting same TC configuration as already enabled */
5346         if (enabled_tc == vsi->tc_config.enabled_tc)
5347                 return 0;
5348
5349         /* Quiesce VSI queues */
5350         i40e_quiesce_vsi(vsi);
5351
5352         /* Configure VSI for enabled TCs */
5353         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5354         if (ret) {
5355                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5356                             vsi->seid);
5357                 goto exit;
5358         }
5359
5360         /* Unquiesce VSI */
5361         i40e_unquiesce_vsi(vsi);
5362
5363 exit:
5364         return ret;
5365 }
5366
5367 #ifdef I40E_FCOE
5368 int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5369                     struct tc_to_netdev *tc)
5370 #else
5371 static int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5372                            struct tc_to_netdev *tc)
5373 #endif
5374 {
5375         if (handle != TC_H_ROOT || tc->type != TC_SETUP_MQPRIO)
5376                 return -EINVAL;
5377         return i40e_setup_tc(netdev, tc->tc);
5378 }
5379
5380 /**
5381  * i40e_open - Called when a network interface is made active
5382  * @netdev: network interface device structure
5383  *
5384  * The open entry point is called when a network interface is made
5385  * active by the system (IFF_UP).  At this point all resources needed
5386  * for transmit and receive operations are allocated, the interrupt
5387  * handler is registered with the OS, the netdev watchdog subtask is
5388  * enabled, and the stack is notified that the interface is ready.
5389  *
5390  * Returns 0 on success, negative value on failure
5391  **/
5392 int i40e_open(struct net_device *netdev)
5393 {
5394         struct i40e_netdev_priv *np = netdev_priv(netdev);
5395         struct i40e_vsi *vsi = np->vsi;
5396         struct i40e_pf *pf = vsi->back;
5397         int err;
5398
5399         /* disallow open during test or if eeprom is broken */
5400         if (test_bit(__I40E_TESTING, &pf->state) ||
5401             test_bit(__I40E_BAD_EEPROM, &pf->state))
5402                 return -EBUSY;
5403
5404         netif_carrier_off(netdev);
5405
5406         err = i40e_vsi_open(vsi);
5407         if (err)
5408                 return err;
5409
5410         /* configure global TSO hardware offload settings */
5411         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5412                                                        TCP_FLAG_FIN) >> 16);
5413         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5414                                                        TCP_FLAG_FIN |
5415                                                        TCP_FLAG_CWR) >> 16);
5416         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5417
5418         udp_tunnel_get_rx_info(netdev);
5419         i40e_notify_client_of_netdev_open(vsi);
5420
5421         return 0;
5422 }
5423
5424 /**
5425  * i40e_vsi_open -
5426  * @vsi: the VSI to open
5427  *
5428  * Finish initialization of the VSI.
5429  *
5430  * Returns 0 on success, negative value on failure
5431  **/
5432 int i40e_vsi_open(struct i40e_vsi *vsi)
5433 {
5434         struct i40e_pf *pf = vsi->back;
5435         char int_name[I40E_INT_NAME_STR_LEN];
5436         int err;
5437
5438         /* allocate descriptors */
5439         err = i40e_vsi_setup_tx_resources(vsi);
5440         if (err)
5441                 goto err_setup_tx;
5442         err = i40e_vsi_setup_rx_resources(vsi);
5443         if (err)
5444                 goto err_setup_rx;
5445
5446         err = i40e_vsi_configure(vsi);
5447         if (err)
5448                 goto err_setup_rx;
5449
5450         if (vsi->netdev) {
5451                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5452                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5453                 err = i40e_vsi_request_irq(vsi, int_name);
5454                 if (err)
5455                         goto err_setup_rx;
5456
5457                 /* Notify the stack of the actual queue counts. */
5458                 err = netif_set_real_num_tx_queues(vsi->netdev,
5459                                                    vsi->num_queue_pairs);
5460                 if (err)
5461                         goto err_set_queues;
5462
5463                 err = netif_set_real_num_rx_queues(vsi->netdev,
5464                                                    vsi->num_queue_pairs);
5465                 if (err)
5466                         goto err_set_queues;
5467
5468         } else if (vsi->type == I40E_VSI_FDIR) {
5469                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5470                          dev_driver_string(&pf->pdev->dev),
5471                          dev_name(&pf->pdev->dev));
5472                 err = i40e_vsi_request_irq(vsi, int_name);
5473
5474         } else {
5475                 err = -EINVAL;
5476                 goto err_setup_rx;
5477         }
5478
5479         err = i40e_up_complete(vsi);
5480         if (err)
5481                 goto err_up_complete;
5482
5483         return 0;
5484
5485 err_up_complete:
5486         i40e_down(vsi);
5487 err_set_queues:
5488         i40e_vsi_free_irq(vsi);
5489 err_setup_rx:
5490         i40e_vsi_free_rx_resources(vsi);
5491 err_setup_tx:
5492         i40e_vsi_free_tx_resources(vsi);
5493         if (vsi == pf->vsi[pf->lan_vsi])
5494                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5495
5496         return err;
5497 }
5498
5499 /**
5500  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5501  * @pf: Pointer to PF
5502  *
5503  * This function destroys the hlist where all the Flow Director
5504  * filters were saved.
5505  **/
5506 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5507 {
5508         struct i40e_fdir_filter *filter;
5509         struct hlist_node *node2;
5510
5511         hlist_for_each_entry_safe(filter, node2,
5512                                   &pf->fdir_filter_list, fdir_node) {
5513                 hlist_del(&filter->fdir_node);
5514                 kfree(filter);
5515         }
5516         pf->fdir_pf_active_filters = 0;
5517 }
5518
5519 /**
5520  * i40e_close - Disables a network interface
5521  * @netdev: network interface device structure
5522  *
5523  * The close entry point is called when an interface is de-activated
5524  * by the OS.  The hardware is still under the driver's control, but
5525  * this netdev interface is disabled.
5526  *
5527  * Returns 0, this is not allowed to fail
5528  **/
5529 int i40e_close(struct net_device *netdev)
5530 {
5531         struct i40e_netdev_priv *np = netdev_priv(netdev);
5532         struct i40e_vsi *vsi = np->vsi;
5533
5534         i40e_vsi_close(vsi);
5535
5536         return 0;
5537 }
5538
5539 /**
5540  * i40e_do_reset - Start a PF or Core Reset sequence
5541  * @pf: board private structure
5542  * @reset_flags: which reset is requested
5543  *
5544  * The essential difference in resets is that the PF Reset
5545  * doesn't clear the packet buffers, doesn't reset the PE
5546  * firmware, and doesn't bother the other PFs on the chip.
5547  **/
5548 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5549 {
5550         u32 val;
5551
5552         WARN_ON(in_interrupt());
5553
5554
5555         /* do the biggest reset indicated */
5556         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5557
5558                 /* Request a Global Reset
5559                  *
5560                  * This will start the chip's countdown to the actual full
5561                  * chip reset event, and a warning interrupt to be sent
5562                  * to all PFs, including the requestor.  Our handler
5563                  * for the warning interrupt will deal with the shutdown
5564                  * and recovery of the switch setup.
5565                  */
5566                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5567                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5568                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5569                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5570
5571         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5572
5573                 /* Request a Core Reset
5574                  *
5575                  * Same as Global Reset, except does *not* include the MAC/PHY
5576                  */
5577                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5578                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5579                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5580                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5581                 i40e_flush(&pf->hw);
5582
5583         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5584
5585                 /* Request a PF Reset
5586                  *
5587                  * Resets only the PF-specific registers
5588                  *
5589                  * This goes directly to the tear-down and rebuild of
5590                  * the switch, since we need to do all the recovery as
5591                  * for the Core Reset.
5592                  */
5593                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5594                 i40e_handle_reset_warning(pf);
5595
5596         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5597                 int v;
5598
5599                 /* Find the VSI(s) that requested a re-init */
5600                 dev_info(&pf->pdev->dev,
5601                          "VSI reinit requested\n");
5602                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5603                         struct i40e_vsi *vsi = pf->vsi[v];
5604
5605                         if (vsi != NULL &&
5606                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5607                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5608                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5609                         }
5610                 }
5611         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5612                 int v;
5613
5614                 /* Find the VSI(s) that needs to be brought down */
5615                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5616                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5617                         struct i40e_vsi *vsi = pf->vsi[v];
5618
5619                         if (vsi != NULL &&
5620                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5621                                 set_bit(__I40E_DOWN, &vsi->state);
5622                                 i40e_down(vsi);
5623                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5624                         }
5625                 }
5626         } else {
5627                 dev_info(&pf->pdev->dev,
5628                          "bad reset request 0x%08x\n", reset_flags);
5629         }
5630 }
5631
5632 #ifdef CONFIG_I40E_DCB
5633 /**
5634  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5635  * @pf: board private structure
5636  * @old_cfg: current DCB config
5637  * @new_cfg: new DCB config
5638  **/
5639 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5640                             struct i40e_dcbx_config *old_cfg,
5641                             struct i40e_dcbx_config *new_cfg)
5642 {
5643         bool need_reconfig = false;
5644
5645         /* Check if ETS configuration has changed */
5646         if (memcmp(&new_cfg->etscfg,
5647                    &old_cfg->etscfg,
5648                    sizeof(new_cfg->etscfg))) {
5649                 /* If Priority Table has changed reconfig is needed */
5650                 if (memcmp(&new_cfg->etscfg.prioritytable,
5651                            &old_cfg->etscfg.prioritytable,
5652                            sizeof(new_cfg->etscfg.prioritytable))) {
5653                         need_reconfig = true;
5654                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5655                 }
5656
5657                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5658                            &old_cfg->etscfg.tcbwtable,
5659                            sizeof(new_cfg->etscfg.tcbwtable)))
5660                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5661
5662                 if (memcmp(&new_cfg->etscfg.tsatable,
5663                            &old_cfg->etscfg.tsatable,
5664                            sizeof(new_cfg->etscfg.tsatable)))
5665                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5666         }
5667
5668         /* Check if PFC configuration has changed */
5669         if (memcmp(&new_cfg->pfc,
5670                    &old_cfg->pfc,
5671                    sizeof(new_cfg->pfc))) {
5672                 need_reconfig = true;
5673                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5674         }
5675
5676         /* Check if APP Table has changed */
5677         if (memcmp(&new_cfg->app,
5678                    &old_cfg->app,
5679                    sizeof(new_cfg->app))) {
5680                 need_reconfig = true;
5681                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5682         }
5683
5684         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5685         return need_reconfig;
5686 }
5687
5688 /**
5689  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5690  * @pf: board private structure
5691  * @e: event info posted on ARQ
5692  **/
5693 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5694                                   struct i40e_arq_event_info *e)
5695 {
5696         struct i40e_aqc_lldp_get_mib *mib =
5697                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5698         struct i40e_hw *hw = &pf->hw;
5699         struct i40e_dcbx_config tmp_dcbx_cfg;
5700         bool need_reconfig = false;
5701         int ret = 0;
5702         u8 type;
5703
5704         /* Not DCB capable or capability disabled */
5705         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5706                 return ret;
5707
5708         /* Ignore if event is not for Nearest Bridge */
5709         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5710                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5711         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5712         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5713                 return ret;
5714
5715         /* Check MIB Type and return if event for Remote MIB update */
5716         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5717         dev_dbg(&pf->pdev->dev,
5718                 "LLDP event mib type %s\n", type ? "remote" : "local");
5719         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5720                 /* Update the remote cached instance and return */
5721                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5722                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5723                                 &hw->remote_dcbx_config);
5724                 goto exit;
5725         }
5726
5727         /* Store the old configuration */
5728         tmp_dcbx_cfg = hw->local_dcbx_config;
5729
5730         /* Reset the old DCBx configuration data */
5731         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5732         /* Get updated DCBX data from firmware */
5733         ret = i40e_get_dcb_config(&pf->hw);
5734         if (ret) {
5735                 dev_info(&pf->pdev->dev,
5736                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5737                          i40e_stat_str(&pf->hw, ret),
5738                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5739                 goto exit;
5740         }
5741
5742         /* No change detected in DCBX configs */
5743         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5744                     sizeof(tmp_dcbx_cfg))) {
5745                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5746                 goto exit;
5747         }
5748
5749         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5750                                                &hw->local_dcbx_config);
5751
5752         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5753
5754         if (!need_reconfig)
5755                 goto exit;
5756
5757         /* Enable DCB tagging only when more than one TC */
5758         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5759                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5760         else
5761                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5762
5763         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5764         /* Reconfiguration needed quiesce all VSIs */
5765         i40e_pf_quiesce_all_vsi(pf);
5766
5767         /* Changes in configuration update VEB/VSI */
5768         i40e_dcb_reconfigure(pf);
5769
5770         ret = i40e_resume_port_tx(pf);
5771
5772         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5773         /* In case of error no point in resuming VSIs */
5774         if (ret)
5775                 goto exit;
5776
5777         /* Wait for the PF's queues to be disabled */
5778         ret = i40e_pf_wait_queues_disabled(pf);
5779         if (ret) {
5780                 /* Schedule PF reset to recover */
5781                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5782                 i40e_service_event_schedule(pf);
5783         } else {
5784                 i40e_pf_unquiesce_all_vsi(pf);
5785                 /* Notify the client for the DCB changes */
5786                 i40e_notify_client_of_l2_param_changes(pf->vsi[pf->lan_vsi]);
5787         }
5788
5789 exit:
5790         return ret;
5791 }
5792 #endif /* CONFIG_I40E_DCB */
5793
5794 /**
5795  * i40e_do_reset_safe - Protected reset path for userland calls.
5796  * @pf: board private structure
5797  * @reset_flags: which reset is requested
5798  *
5799  **/
5800 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5801 {
5802         rtnl_lock();
5803         i40e_do_reset(pf, reset_flags);
5804         rtnl_unlock();
5805 }
5806
5807 /**
5808  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5809  * @pf: board private structure
5810  * @e: event info posted on ARQ
5811  *
5812  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5813  * and VF queues
5814  **/
5815 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5816                                            struct i40e_arq_event_info *e)
5817 {
5818         struct i40e_aqc_lan_overflow *data =
5819                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5820         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5821         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5822         struct i40e_hw *hw = &pf->hw;
5823         struct i40e_vf *vf;
5824         u16 vf_id;
5825
5826         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5827                 queue, qtx_ctl);
5828
5829         /* Queue belongs to VF, find the VF and issue VF reset */
5830         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5831             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5832                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5833                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5834                 vf_id -= hw->func_caps.vf_base_id;
5835                 vf = &pf->vf[vf_id];
5836                 i40e_vc_notify_vf_reset(vf);
5837                 /* Allow VF to process pending reset notification */
5838                 msleep(20);
5839                 i40e_reset_vf(vf, false);
5840         }
5841 }
5842
5843 /**
5844  * i40e_service_event_complete - Finish up the service event
5845  * @pf: board private structure
5846  **/
5847 static void i40e_service_event_complete(struct i40e_pf *pf)
5848 {
5849         WARN_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5850
5851         /* flush memory to make sure state is correct before next watchog */
5852         smp_mb__before_atomic();
5853         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5854 }
5855
5856 /**
5857  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5858  * @pf: board private structure
5859  **/
5860 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5861 {
5862         u32 val, fcnt_prog;
5863
5864         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5865         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5866         return fcnt_prog;
5867 }
5868
5869 /**
5870  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5871  * @pf: board private structure
5872  **/
5873 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5874 {
5875         u32 val, fcnt_prog;
5876
5877         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5878         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5879                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5880                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5881         return fcnt_prog;
5882 }
5883
5884 /**
5885  * i40e_get_global_fd_count - Get total FD filters programmed on device
5886  * @pf: board private structure
5887  **/
5888 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5889 {
5890         u32 val, fcnt_prog;
5891
5892         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5893         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5894                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5895                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5896         return fcnt_prog;
5897 }
5898
5899 /**
5900  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5901  * @pf: board private structure
5902  **/
5903 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5904 {
5905         struct i40e_fdir_filter *filter;
5906         u32 fcnt_prog, fcnt_avail;
5907         struct hlist_node *node;
5908
5909         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5910                 return;
5911
5912         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5913          * to re-enable
5914          */
5915         fcnt_prog = i40e_get_global_fd_count(pf);
5916         fcnt_avail = pf->fdir_pf_filter_count;
5917         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5918             (pf->fd_add_err == 0) ||
5919             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5920                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5921                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5922                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5923                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5924                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5925                 }
5926         }
5927         /* Wait for some more space to be available to turn on ATR */
5928         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5929                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5930                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5931                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5932                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5933                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5934                 }
5935         }
5936
5937         /* if hw had a problem adding a filter, delete it */
5938         if (pf->fd_inv > 0) {
5939                 hlist_for_each_entry_safe(filter, node,
5940                                           &pf->fdir_filter_list, fdir_node) {
5941                         if (filter->fd_id == pf->fd_inv) {
5942                                 hlist_del(&filter->fdir_node);
5943                                 kfree(filter);
5944                                 pf->fdir_pf_active_filters--;
5945                         }
5946                 }
5947         }
5948 }
5949
5950 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5951 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5952 /**
5953  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5954  * @pf: board private structure
5955  **/
5956 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5957 {
5958         unsigned long min_flush_time;
5959         int flush_wait_retry = 50;
5960         bool disable_atr = false;
5961         int fd_room;
5962         int reg;
5963
5964         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5965                 return;
5966
5967         if (!time_after(jiffies, pf->fd_flush_timestamp +
5968                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
5969                 return;
5970
5971         /* If the flush is happening too quick and we have mostly SB rules we
5972          * should not re-enable ATR for some time.
5973          */
5974         min_flush_time = pf->fd_flush_timestamp +
5975                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5976         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5977
5978         if (!(time_after(jiffies, min_flush_time)) &&
5979             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5980                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5981                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5982                 disable_atr = true;
5983         }
5984
5985         pf->fd_flush_timestamp = jiffies;
5986         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5987         /* flush all filters */
5988         wr32(&pf->hw, I40E_PFQF_CTL_1,
5989              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5990         i40e_flush(&pf->hw);
5991         pf->fd_flush_cnt++;
5992         pf->fd_add_err = 0;
5993         do {
5994                 /* Check FD flush status every 5-6msec */
5995                 usleep_range(5000, 6000);
5996                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5997                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5998                         break;
5999         } while (flush_wait_retry--);
6000         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
6001                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
6002         } else {
6003                 /* replay sideband filters */
6004                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
6005                 if (!disable_atr)
6006                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
6007                 clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
6008                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
6009                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
6010         }
6011 }
6012
6013 /**
6014  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
6015  * @pf: board private structure
6016  **/
6017 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
6018 {
6019         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
6020 }
6021
6022 /* We can see up to 256 filter programming desc in transit if the filters are
6023  * being applied really fast; before we see the first
6024  * filter miss error on Rx queue 0. Accumulating enough error messages before
6025  * reacting will make sure we don't cause flush too often.
6026  */
6027 #define I40E_MAX_FD_PROGRAM_ERROR 256
6028
6029 /**
6030  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
6031  * @pf: board private structure
6032  **/
6033 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
6034 {
6035
6036         /* if interface is down do nothing */
6037         if (test_bit(__I40E_DOWN, &pf->state))
6038                 return;
6039
6040         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
6041                 return;
6042
6043         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
6044                 i40e_fdir_flush_and_replay(pf);
6045
6046         i40e_fdir_check_and_reenable(pf);
6047
6048 }
6049
6050 /**
6051  * i40e_vsi_link_event - notify VSI of a link event
6052  * @vsi: vsi to be notified
6053  * @link_up: link up or down
6054  **/
6055 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
6056 {
6057         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
6058                 return;
6059
6060         switch (vsi->type) {
6061         case I40E_VSI_MAIN:
6062 #ifdef I40E_FCOE
6063         case I40E_VSI_FCOE:
6064 #endif
6065                 if (!vsi->netdev || !vsi->netdev_registered)
6066                         break;
6067
6068                 if (link_up) {
6069                         netif_carrier_on(vsi->netdev);
6070                         netif_tx_wake_all_queues(vsi->netdev);
6071                 } else {
6072                         netif_carrier_off(vsi->netdev);
6073                         netif_tx_stop_all_queues(vsi->netdev);
6074                 }
6075                 break;
6076
6077         case I40E_VSI_SRIOV:
6078         case I40E_VSI_VMDQ2:
6079         case I40E_VSI_CTRL:
6080         case I40E_VSI_IWARP:
6081         case I40E_VSI_MIRROR:
6082         default:
6083                 /* there is no notification for other VSIs */
6084                 break;
6085         }
6086 }
6087
6088 /**
6089  * i40e_veb_link_event - notify elements on the veb of a link event
6090  * @veb: veb to be notified
6091  * @link_up: link up or down
6092  **/
6093 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
6094 {
6095         struct i40e_pf *pf;
6096         int i;
6097
6098         if (!veb || !veb->pf)
6099                 return;
6100         pf = veb->pf;
6101
6102         /* depth first... */
6103         for (i = 0; i < I40E_MAX_VEB; i++)
6104                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
6105                         i40e_veb_link_event(pf->veb[i], link_up);
6106
6107         /* ... now the local VSIs */
6108         for (i = 0; i < pf->num_alloc_vsi; i++)
6109                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
6110                         i40e_vsi_link_event(pf->vsi[i], link_up);
6111 }
6112
6113 /**
6114  * i40e_link_event - Update netif_carrier status
6115  * @pf: board private structure
6116  **/
6117 static void i40e_link_event(struct i40e_pf *pf)
6118 {
6119         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6120         u8 new_link_speed, old_link_speed;
6121         i40e_status status;
6122         bool new_link, old_link;
6123
6124         /* save off old link status information */
6125         pf->hw.phy.link_info_old = pf->hw.phy.link_info;
6126
6127         /* set this to force the get_link_status call to refresh state */
6128         pf->hw.phy.get_link_info = true;
6129
6130         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
6131
6132         status = i40e_get_link_status(&pf->hw, &new_link);
6133         if (status) {
6134                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
6135                         status);
6136                 return;
6137         }
6138
6139         old_link_speed = pf->hw.phy.link_info_old.link_speed;
6140         new_link_speed = pf->hw.phy.link_info.link_speed;
6141
6142         if (new_link == old_link &&
6143             new_link_speed == old_link_speed &&
6144             (test_bit(__I40E_DOWN, &vsi->state) ||
6145              new_link == netif_carrier_ok(vsi->netdev)))
6146                 return;
6147
6148         if (!test_bit(__I40E_DOWN, &vsi->state))
6149                 i40e_print_link_message(vsi, new_link);
6150
6151         /* Notify the base of the switch tree connected to
6152          * the link.  Floating VEBs are not notified.
6153          */
6154         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
6155                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
6156         else
6157                 i40e_vsi_link_event(vsi, new_link);
6158
6159         if (pf->vf)
6160                 i40e_vc_notify_link_state(pf);
6161
6162         if (pf->flags & I40E_FLAG_PTP)
6163                 i40e_ptp_set_increment(pf);
6164 }
6165
6166 /**
6167  * i40e_watchdog_subtask - periodic checks not using event driven response
6168  * @pf: board private structure
6169  **/
6170 static void i40e_watchdog_subtask(struct i40e_pf *pf)
6171 {
6172         int i;
6173
6174         /* if interface is down do nothing */
6175         if (test_bit(__I40E_DOWN, &pf->state) ||
6176             test_bit(__I40E_CONFIG_BUSY, &pf->state))
6177                 return;
6178
6179         /* make sure we don't do these things too often */
6180         if (time_before(jiffies, (pf->service_timer_previous +
6181                                   pf->service_timer_period)))
6182                 return;
6183         pf->service_timer_previous = jiffies;
6184
6185         if (pf->flags & I40E_FLAG_LINK_POLLING_ENABLED)
6186                 i40e_link_event(pf);
6187
6188         /* Update the stats for active netdevs so the network stack
6189          * can look at updated numbers whenever it cares to
6190          */
6191         for (i = 0; i < pf->num_alloc_vsi; i++)
6192                 if (pf->vsi[i] && pf->vsi[i]->netdev)
6193                         i40e_update_stats(pf->vsi[i]);
6194
6195         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
6196                 /* Update the stats for the active switching components */
6197                 for (i = 0; i < I40E_MAX_VEB; i++)
6198                         if (pf->veb[i])
6199                                 i40e_update_veb_stats(pf->veb[i]);
6200         }
6201
6202         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
6203 }
6204
6205 /**
6206  * i40e_reset_subtask - Set up for resetting the device and driver
6207  * @pf: board private structure
6208  **/
6209 static void i40e_reset_subtask(struct i40e_pf *pf)
6210 {
6211         u32 reset_flags = 0;
6212
6213         rtnl_lock();
6214         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
6215                 reset_flags |= BIT(__I40E_REINIT_REQUESTED);
6216                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
6217         }
6218         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
6219                 reset_flags |= BIT(__I40E_PF_RESET_REQUESTED);
6220                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6221         }
6222         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
6223                 reset_flags |= BIT(__I40E_CORE_RESET_REQUESTED);
6224                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
6225         }
6226         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
6227                 reset_flags |= BIT(__I40E_GLOBAL_RESET_REQUESTED);
6228                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
6229         }
6230         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
6231                 reset_flags |= BIT(__I40E_DOWN_REQUESTED);
6232                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
6233         }
6234
6235         /* If there's a recovery already waiting, it takes
6236          * precedence before starting a new reset sequence.
6237          */
6238         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
6239                 i40e_handle_reset_warning(pf);
6240                 goto unlock;
6241         }
6242
6243         /* If we're already down or resetting, just bail */
6244         if (reset_flags &&
6245             !test_bit(__I40E_DOWN, &pf->state) &&
6246             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
6247                 i40e_do_reset(pf, reset_flags);
6248
6249 unlock:
6250         rtnl_unlock();
6251 }
6252
6253 /**
6254  * i40e_handle_link_event - Handle link event
6255  * @pf: board private structure
6256  * @e: event info posted on ARQ
6257  **/
6258 static void i40e_handle_link_event(struct i40e_pf *pf,
6259                                    struct i40e_arq_event_info *e)
6260 {
6261         struct i40e_aqc_get_link_status *status =
6262                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
6263
6264         /* Do a new status request to re-enable LSE reporting
6265          * and load new status information into the hw struct
6266          * This completely ignores any state information
6267          * in the ARQ event info, instead choosing to always
6268          * issue the AQ update link status command.
6269          */
6270         i40e_link_event(pf);
6271
6272         /* check for unqualified module, if link is down */
6273         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
6274             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
6275             (!(status->link_info & I40E_AQ_LINK_UP)))
6276                 dev_err(&pf->pdev->dev,
6277                         "The driver failed to link because an unqualified module was detected.\n");
6278 }
6279
6280 /**
6281  * i40e_clean_adminq_subtask - Clean the AdminQ rings
6282  * @pf: board private structure
6283  **/
6284 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6285 {
6286         struct i40e_arq_event_info event;
6287         struct i40e_hw *hw = &pf->hw;
6288         u16 pending, i = 0;
6289         i40e_status ret;
6290         u16 opcode;
6291         u32 oldval;
6292         u32 val;
6293
6294         /* Do not run clean AQ when PF reset fails */
6295         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6296                 return;
6297
6298         /* check for error indications */
6299         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6300         oldval = val;
6301         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6302                 if (hw->debug_mask & I40E_DEBUG_AQ)
6303                         dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6304                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6305         }
6306         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6307                 if (hw->debug_mask & I40E_DEBUG_AQ)
6308                         dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6309                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6310                 pf->arq_overflows++;
6311         }
6312         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6313                 if (hw->debug_mask & I40E_DEBUG_AQ)
6314                         dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6315                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6316         }
6317         if (oldval != val)
6318                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6319
6320         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6321         oldval = val;
6322         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6323                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6324                         dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6325                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6326         }
6327         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6328                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6329                         dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6330                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6331         }
6332         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6333                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6334                         dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6335                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6336         }
6337         if (oldval != val)
6338                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6339
6340         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6341         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6342         if (!event.msg_buf)
6343                 return;
6344
6345         do {
6346                 ret = i40e_clean_arq_element(hw, &event, &pending);
6347                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6348                         break;
6349                 else if (ret) {
6350                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6351                         break;
6352                 }
6353
6354                 opcode = le16_to_cpu(event.desc.opcode);
6355                 switch (opcode) {
6356
6357                 case i40e_aqc_opc_get_link_status:
6358                         i40e_handle_link_event(pf, &event);
6359                         break;
6360                 case i40e_aqc_opc_send_msg_to_pf:
6361                         ret = i40e_vc_process_vf_msg(pf,
6362                                         le16_to_cpu(event.desc.retval),
6363                                         le32_to_cpu(event.desc.cookie_high),
6364                                         le32_to_cpu(event.desc.cookie_low),
6365                                         event.msg_buf,
6366                                         event.msg_len);
6367                         break;
6368                 case i40e_aqc_opc_lldp_update_mib:
6369                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6370 #ifdef CONFIG_I40E_DCB
6371                         rtnl_lock();
6372                         ret = i40e_handle_lldp_event(pf, &event);
6373                         rtnl_unlock();
6374 #endif /* CONFIG_I40E_DCB */
6375                         break;
6376                 case i40e_aqc_opc_event_lan_overflow:
6377                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6378                         i40e_handle_lan_overflow_event(pf, &event);
6379                         break;
6380                 case i40e_aqc_opc_send_msg_to_peer:
6381                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6382                         break;
6383                 case i40e_aqc_opc_nvm_erase:
6384                 case i40e_aqc_opc_nvm_update:
6385                 case i40e_aqc_opc_oem_post_update:
6386                         i40e_debug(&pf->hw, I40E_DEBUG_NVM,
6387                                    "ARQ NVM operation 0x%04x completed\n",
6388                                    opcode);
6389                         break;
6390                 default:
6391                         dev_info(&pf->pdev->dev,
6392                                  "ARQ: Unknown event 0x%04x ignored\n",
6393                                  opcode);
6394                         break;
6395                 }
6396         } while (pending && (i++ < pf->adminq_work_limit));
6397
6398         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6399         /* re-enable Admin queue interrupt cause */
6400         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6401         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6402         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6403         i40e_flush(hw);
6404
6405         kfree(event.msg_buf);
6406 }
6407
6408 /**
6409  * i40e_verify_eeprom - make sure eeprom is good to use
6410  * @pf: board private structure
6411  **/
6412 static void i40e_verify_eeprom(struct i40e_pf *pf)
6413 {
6414         int err;
6415
6416         err = i40e_diag_eeprom_test(&pf->hw);
6417         if (err) {
6418                 /* retry in case of garbage read */
6419                 err = i40e_diag_eeprom_test(&pf->hw);
6420                 if (err) {
6421                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6422                                  err);
6423                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6424                 }
6425         }
6426
6427         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6428                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6429                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6430         }
6431 }
6432
6433 /**
6434  * i40e_enable_pf_switch_lb
6435  * @pf: pointer to the PF structure
6436  *
6437  * enable switch loop back or die - no point in a return value
6438  **/
6439 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6440 {
6441         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6442         struct i40e_vsi_context ctxt;
6443         int ret;
6444
6445         ctxt.seid = pf->main_vsi_seid;
6446         ctxt.pf_num = pf->hw.pf_id;
6447         ctxt.vf_num = 0;
6448         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6449         if (ret) {
6450                 dev_info(&pf->pdev->dev,
6451                          "couldn't get PF vsi config, err %s aq_err %s\n",
6452                          i40e_stat_str(&pf->hw, ret),
6453                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6454                 return;
6455         }
6456         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6457         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6458         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6459
6460         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6461         if (ret) {
6462                 dev_info(&pf->pdev->dev,
6463                          "update vsi switch failed, err %s aq_err %s\n",
6464                          i40e_stat_str(&pf->hw, ret),
6465                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6466         }
6467 }
6468
6469 /**
6470  * i40e_disable_pf_switch_lb
6471  * @pf: pointer to the PF structure
6472  *
6473  * disable switch loop back or die - no point in a return value
6474  **/
6475 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6476 {
6477         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6478         struct i40e_vsi_context ctxt;
6479         int ret;
6480
6481         ctxt.seid = pf->main_vsi_seid;
6482         ctxt.pf_num = pf->hw.pf_id;
6483         ctxt.vf_num = 0;
6484         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6485         if (ret) {
6486                 dev_info(&pf->pdev->dev,
6487                          "couldn't get PF vsi config, err %s aq_err %s\n",
6488                          i40e_stat_str(&pf->hw, ret),
6489                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6490                 return;
6491         }
6492         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6493         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6494         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6495
6496         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6497         if (ret) {
6498                 dev_info(&pf->pdev->dev,
6499                          "update vsi switch failed, err %s aq_err %s\n",
6500                          i40e_stat_str(&pf->hw, ret),
6501                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6502         }
6503 }
6504
6505 /**
6506  * i40e_config_bridge_mode - Configure the HW bridge mode
6507  * @veb: pointer to the bridge instance
6508  *
6509  * Configure the loop back mode for the LAN VSI that is downlink to the
6510  * specified HW bridge instance. It is expected this function is called
6511  * when a new HW bridge is instantiated.
6512  **/
6513 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6514 {
6515         struct i40e_pf *pf = veb->pf;
6516
6517         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
6518                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6519                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6520         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6521                 i40e_disable_pf_switch_lb(pf);
6522         else
6523                 i40e_enable_pf_switch_lb(pf);
6524 }
6525
6526 /**
6527  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6528  * @veb: pointer to the VEB instance
6529  *
6530  * This is a recursive function that first builds the attached VSIs then
6531  * recurses in to build the next layer of VEB.  We track the connections
6532  * through our own index numbers because the seid's from the HW could
6533  * change across the reset.
6534  **/
6535 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6536 {
6537         struct i40e_vsi *ctl_vsi = NULL;
6538         struct i40e_pf *pf = veb->pf;
6539         int v, veb_idx;
6540         int ret;
6541
6542         /* build VSI that owns this VEB, temporarily attached to base VEB */
6543         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6544                 if (pf->vsi[v] &&
6545                     pf->vsi[v]->veb_idx == veb->idx &&
6546                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6547                         ctl_vsi = pf->vsi[v];
6548                         break;
6549                 }
6550         }
6551         if (!ctl_vsi) {
6552                 dev_info(&pf->pdev->dev,
6553                          "missing owner VSI for veb_idx %d\n", veb->idx);
6554                 ret = -ENOENT;
6555                 goto end_reconstitute;
6556         }
6557         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6558                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6559         ret = i40e_add_vsi(ctl_vsi);
6560         if (ret) {
6561                 dev_info(&pf->pdev->dev,
6562                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6563                          veb->idx, ret);
6564                 goto end_reconstitute;
6565         }
6566         i40e_vsi_reset_stats(ctl_vsi);
6567
6568         /* create the VEB in the switch and move the VSI onto the VEB */
6569         ret = i40e_add_veb(veb, ctl_vsi);
6570         if (ret)
6571                 goto end_reconstitute;
6572
6573         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6574                 veb->bridge_mode = BRIDGE_MODE_VEB;
6575         else
6576                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6577         i40e_config_bridge_mode(veb);
6578
6579         /* create the remaining VSIs attached to this VEB */
6580         for (v = 0; v < pf->num_alloc_vsi; v++) {
6581                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6582                         continue;
6583
6584                 if (pf->vsi[v]->veb_idx == veb->idx) {
6585                         struct i40e_vsi *vsi = pf->vsi[v];
6586
6587                         vsi->uplink_seid = veb->seid;
6588                         ret = i40e_add_vsi(vsi);
6589                         if (ret) {
6590                                 dev_info(&pf->pdev->dev,
6591                                          "rebuild of vsi_idx %d failed: %d\n",
6592                                          v, ret);
6593                                 goto end_reconstitute;
6594                         }
6595                         i40e_vsi_reset_stats(vsi);
6596                 }
6597         }
6598
6599         /* create any VEBs attached to this VEB - RECURSION */
6600         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6601                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6602                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6603                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6604                         if (ret)
6605                                 break;
6606                 }
6607         }
6608
6609 end_reconstitute:
6610         return ret;
6611 }
6612
6613 /**
6614  * i40e_get_capabilities - get info about the HW
6615  * @pf: the PF struct
6616  **/
6617 static int i40e_get_capabilities(struct i40e_pf *pf)
6618 {
6619         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6620         u16 data_size;
6621         int buf_len;
6622         int err;
6623
6624         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6625         do {
6626                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6627                 if (!cap_buf)
6628                         return -ENOMEM;
6629
6630                 /* this loads the data into the hw struct for us */
6631                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6632                                             &data_size,
6633                                             i40e_aqc_opc_list_func_capabilities,
6634                                             NULL);
6635                 /* data loaded, buffer no longer needed */
6636                 kfree(cap_buf);
6637
6638                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6639                         /* retry with a larger buffer */
6640                         buf_len = data_size;
6641                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6642                         dev_info(&pf->pdev->dev,
6643                                  "capability discovery failed, err %s aq_err %s\n",
6644                                  i40e_stat_str(&pf->hw, err),
6645                                  i40e_aq_str(&pf->hw,
6646                                              pf->hw.aq.asq_last_status));
6647                         return -ENODEV;
6648                 }
6649         } while (err);
6650
6651         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6652                 dev_info(&pf->pdev->dev,
6653                          "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",
6654                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6655                          pf->hw.func_caps.num_msix_vectors,
6656                          pf->hw.func_caps.num_msix_vectors_vf,
6657                          pf->hw.func_caps.fd_filters_guaranteed,
6658                          pf->hw.func_caps.fd_filters_best_effort,
6659                          pf->hw.func_caps.num_tx_qp,
6660                          pf->hw.func_caps.num_vsis);
6661
6662 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6663                        + pf->hw.func_caps.num_vfs)
6664         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6665                 dev_info(&pf->pdev->dev,
6666                          "got num_vsis %d, setting num_vsis to %d\n",
6667                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6668                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6669         }
6670
6671         return 0;
6672 }
6673
6674 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6675
6676 /**
6677  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6678  * @pf: board private structure
6679  **/
6680 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6681 {
6682         struct i40e_vsi *vsi;
6683         int i;
6684
6685         /* quick workaround for an NVM issue that leaves a critical register
6686          * uninitialized
6687          */
6688         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6689                 static const u32 hkey[] = {
6690                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6691                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6692                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6693                         0x95b3a76d};
6694
6695                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6696                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6697         }
6698
6699         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6700                 return;
6701
6702         /* find existing VSI and see if it needs configuring */
6703         vsi = NULL;
6704         for (i = 0; i < pf->num_alloc_vsi; i++) {
6705                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6706                         vsi = pf->vsi[i];
6707                         break;
6708                 }
6709         }
6710
6711         /* create a new VSI if none exists */
6712         if (!vsi) {
6713                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6714                                      pf->vsi[pf->lan_vsi]->seid, 0);
6715                 if (!vsi) {
6716                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6717                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6718                         return;
6719                 }
6720         }
6721
6722         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6723 }
6724
6725 /**
6726  * i40e_fdir_teardown - release the Flow Director resources
6727  * @pf: board private structure
6728  **/
6729 static void i40e_fdir_teardown(struct i40e_pf *pf)
6730 {
6731         int i;
6732
6733         i40e_fdir_filter_exit(pf);
6734         for (i = 0; i < pf->num_alloc_vsi; i++) {
6735                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6736                         i40e_vsi_release(pf->vsi[i]);
6737                         break;
6738                 }
6739         }
6740 }
6741
6742 /**
6743  * i40e_prep_for_reset - prep for the core to reset
6744  * @pf: board private structure
6745  *
6746  * Close up the VFs and other things in prep for PF Reset.
6747   **/
6748 static void i40e_prep_for_reset(struct i40e_pf *pf)
6749 {
6750         struct i40e_hw *hw = &pf->hw;
6751         i40e_status ret = 0;
6752         u32 v;
6753
6754         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6755         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6756                 return;
6757         if (i40e_check_asq_alive(&pf->hw))
6758                 i40e_vc_notify_reset(pf);
6759
6760         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6761
6762         /* quiesce the VSIs and their queues that are not already DOWN */
6763         i40e_pf_quiesce_all_vsi(pf);
6764
6765         for (v = 0; v < pf->num_alloc_vsi; v++) {
6766                 if (pf->vsi[v])
6767                         pf->vsi[v]->seid = 0;
6768         }
6769
6770         i40e_shutdown_adminq(&pf->hw);
6771
6772         /* call shutdown HMC */
6773         if (hw->hmc.hmc_obj) {
6774                 ret = i40e_shutdown_lan_hmc(hw);
6775                 if (ret)
6776                         dev_warn(&pf->pdev->dev,
6777                                  "shutdown_lan_hmc failed: %d\n", ret);
6778         }
6779 }
6780
6781 /**
6782  * i40e_send_version - update firmware with driver version
6783  * @pf: PF struct
6784  */
6785 static void i40e_send_version(struct i40e_pf *pf)
6786 {
6787         struct i40e_driver_version dv;
6788
6789         dv.major_version = DRV_VERSION_MAJOR;
6790         dv.minor_version = DRV_VERSION_MINOR;
6791         dv.build_version = DRV_VERSION_BUILD;
6792         dv.subbuild_version = 0;
6793         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6794         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6795 }
6796
6797 /**
6798  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6799  * @pf: board private structure
6800  * @reinit: if the Main VSI needs to re-initialized.
6801  **/
6802 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6803 {
6804         struct i40e_hw *hw = &pf->hw;
6805         u8 set_fc_aq_fail = 0;
6806         i40e_status ret;
6807         u32 val;
6808         u32 v;
6809
6810         /* Now we wait for GRST to settle out.
6811          * We don't have to delete the VEBs or VSIs from the hw switch
6812          * because the reset will make them disappear.
6813          */
6814         ret = i40e_pf_reset(hw);
6815         if (ret) {
6816                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6817                 set_bit(__I40E_RESET_FAILED, &pf->state);
6818                 goto clear_recovery;
6819         }
6820         pf->pfr_count++;
6821
6822         if (test_bit(__I40E_DOWN, &pf->state))
6823                 goto clear_recovery;
6824         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6825
6826         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6827         ret = i40e_init_adminq(&pf->hw);
6828         if (ret) {
6829                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6830                          i40e_stat_str(&pf->hw, ret),
6831                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6832                 goto clear_recovery;
6833         }
6834
6835         /* re-verify the eeprom if we just had an EMP reset */
6836         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6837                 i40e_verify_eeprom(pf);
6838
6839         i40e_clear_pxe_mode(hw);
6840         ret = i40e_get_capabilities(pf);
6841         if (ret)
6842                 goto end_core_reset;
6843
6844         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6845                                 hw->func_caps.num_rx_qp,
6846                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6847         if (ret) {
6848                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6849                 goto end_core_reset;
6850         }
6851         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6852         if (ret) {
6853                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6854                 goto end_core_reset;
6855         }
6856
6857 #ifdef CONFIG_I40E_DCB
6858         ret = i40e_init_pf_dcb(pf);
6859         if (ret) {
6860                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6861                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6862                 /* Continue without DCB enabled */
6863         }
6864 #endif /* CONFIG_I40E_DCB */
6865 #ifdef I40E_FCOE
6866         i40e_init_pf_fcoe(pf);
6867
6868 #endif
6869         /* do basic switch setup */
6870         ret = i40e_setup_pf_switch(pf, reinit);
6871         if (ret)
6872                 goto end_core_reset;
6873
6874         /* The driver only wants link up/down and module qualification
6875          * reports from firmware.  Note the negative logic.
6876          */
6877         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6878                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
6879                                          I40E_AQ_EVENT_MEDIA_NA |
6880                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
6881         if (ret)
6882                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6883                          i40e_stat_str(&pf->hw, ret),
6884                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6885
6886         /* make sure our flow control settings are restored */
6887         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6888         if (ret)
6889                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
6890                         i40e_stat_str(&pf->hw, ret),
6891                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6892
6893         /* Rebuild the VSIs and VEBs that existed before reset.
6894          * They are still in our local switch element arrays, so only
6895          * need to rebuild the switch model in the HW.
6896          *
6897          * If there were VEBs but the reconstitution failed, we'll try
6898          * try to recover minimal use by getting the basic PF VSI working.
6899          */
6900         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6901                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6902                 /* find the one VEB connected to the MAC, and find orphans */
6903                 for (v = 0; v < I40E_MAX_VEB; v++) {
6904                         if (!pf->veb[v])
6905                                 continue;
6906
6907                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6908                             pf->veb[v]->uplink_seid == 0) {
6909                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6910
6911                                 if (!ret)
6912                                         continue;
6913
6914                                 /* If Main VEB failed, we're in deep doodoo,
6915                                  * so give up rebuilding the switch and set up
6916                                  * for minimal rebuild of PF VSI.
6917                                  * If orphan failed, we'll report the error
6918                                  * but try to keep going.
6919                                  */
6920                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6921                                         dev_info(&pf->pdev->dev,
6922                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6923                                                  ret);
6924                                         pf->vsi[pf->lan_vsi]->uplink_seid
6925                                                                 = pf->mac_seid;
6926                                         break;
6927                                 } else if (pf->veb[v]->uplink_seid == 0) {
6928                                         dev_info(&pf->pdev->dev,
6929                                                  "rebuild of orphan VEB failed: %d\n",
6930                                                  ret);
6931                                 }
6932                         }
6933                 }
6934         }
6935
6936         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6937                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6938                 /* no VEB, so rebuild only the Main VSI */
6939                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6940                 if (ret) {
6941                         dev_info(&pf->pdev->dev,
6942                                  "rebuild of Main VSI failed: %d\n", ret);
6943                         goto end_core_reset;
6944                 }
6945         }
6946
6947         /* Reconfigure hardware for allowing smaller MSS in the case
6948          * of TSO, so that we avoid the MDD being fired and causing
6949          * a reset in the case of small MSS+TSO.
6950          */
6951 #define I40E_REG_MSS          0x000E64DC
6952 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
6953 #define I40E_64BYTE_MSS       0x400000
6954         val = rd32(hw, I40E_REG_MSS);
6955         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
6956                 val &= ~I40E_REG_MSS_MIN_MASK;
6957                 val |= I40E_64BYTE_MSS;
6958                 wr32(hw, I40E_REG_MSS, val);
6959         }
6960
6961         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
6962                 msleep(75);
6963                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6964                 if (ret)
6965                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6966                                  i40e_stat_str(&pf->hw, ret),
6967                                  i40e_aq_str(&pf->hw,
6968                                              pf->hw.aq.asq_last_status));
6969         }
6970         /* reinit the misc interrupt */
6971         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6972                 ret = i40e_setup_misc_vector(pf);
6973
6974         /* Add a filter to drop all Flow control frames from any VSI from being
6975          * transmitted. By doing so we stop a malicious VF from sending out
6976          * PAUSE or PFC frames and potentially controlling traffic for other
6977          * PF/VF VSIs.
6978          * The FW can still send Flow control frames if enabled.
6979          */
6980         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
6981                                                        pf->main_vsi_seid);
6982
6983         /* restart the VSIs that were rebuilt and running before the reset */
6984         i40e_pf_unquiesce_all_vsi(pf);
6985
6986         if (pf->num_alloc_vfs) {
6987                 for (v = 0; v < pf->num_alloc_vfs; v++)
6988                         i40e_reset_vf(&pf->vf[v], true);
6989         }
6990
6991         /* tell the firmware that we're starting */
6992         i40e_send_version(pf);
6993
6994 end_core_reset:
6995         clear_bit(__I40E_RESET_FAILED, &pf->state);
6996 clear_recovery:
6997         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6998 }
6999
7000 /**
7001  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
7002  * @pf: board private structure
7003  *
7004  * Close up the VFs and other things in prep for a Core Reset,
7005  * then get ready to rebuild the world.
7006  **/
7007 static void i40e_handle_reset_warning(struct i40e_pf *pf)
7008 {
7009         i40e_prep_for_reset(pf);
7010         i40e_reset_and_rebuild(pf, false);
7011 }
7012
7013 /**
7014  * i40e_handle_mdd_event
7015  * @pf: pointer to the PF structure
7016  *
7017  * Called from the MDD irq handler to identify possibly malicious vfs
7018  **/
7019 static void i40e_handle_mdd_event(struct i40e_pf *pf)
7020 {
7021         struct i40e_hw *hw = &pf->hw;
7022         bool mdd_detected = false;
7023         bool pf_mdd_detected = false;
7024         struct i40e_vf *vf;
7025         u32 reg;
7026         int i;
7027
7028         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
7029                 return;
7030
7031         /* find what triggered the MDD event */
7032         reg = rd32(hw, I40E_GL_MDET_TX);
7033         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
7034                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
7035                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
7036                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
7037                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
7038                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
7039                                 I40E_GL_MDET_TX_EVENT_SHIFT;
7040                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
7041                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
7042                                 pf->hw.func_caps.base_queue;
7043                 if (netif_msg_tx_err(pf))
7044                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
7045                                  event, queue, pf_num, vf_num);
7046                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
7047                 mdd_detected = true;
7048         }
7049         reg = rd32(hw, I40E_GL_MDET_RX);
7050         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
7051                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
7052                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
7053                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
7054                                 I40E_GL_MDET_RX_EVENT_SHIFT;
7055                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
7056                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
7057                                 pf->hw.func_caps.base_queue;
7058                 if (netif_msg_rx_err(pf))
7059                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
7060                                  event, queue, func);
7061                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
7062                 mdd_detected = true;
7063         }
7064
7065         if (mdd_detected) {
7066                 reg = rd32(hw, I40E_PF_MDET_TX);
7067                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
7068                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
7069                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
7070                         pf_mdd_detected = true;
7071                 }
7072                 reg = rd32(hw, I40E_PF_MDET_RX);
7073                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
7074                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
7075                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
7076                         pf_mdd_detected = true;
7077                 }
7078                 /* Queue belongs to the PF, initiate a reset */
7079                 if (pf_mdd_detected) {
7080                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
7081                         i40e_service_event_schedule(pf);
7082                 }
7083         }
7084
7085         /* see if one of the VFs needs its hand slapped */
7086         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
7087                 vf = &(pf->vf[i]);
7088                 reg = rd32(hw, I40E_VP_MDET_TX(i));
7089                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
7090                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
7091                         vf->num_mdd_events++;
7092                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
7093                                  i);
7094                 }
7095
7096                 reg = rd32(hw, I40E_VP_MDET_RX(i));
7097                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
7098                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
7099                         vf->num_mdd_events++;
7100                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
7101                                  i);
7102                 }
7103
7104                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
7105                         dev_info(&pf->pdev->dev,
7106                                  "Too many MDD events on VF %d, disabled\n", i);
7107                         dev_info(&pf->pdev->dev,
7108                                  "Use PF Control I/F to re-enable the VF\n");
7109                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
7110                 }
7111         }
7112
7113         /* re-enable mdd interrupt cause */
7114         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
7115         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
7116         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
7117         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
7118         i40e_flush(hw);
7119 }
7120
7121 /**
7122  * i40e_sync_udp_filters_subtask - Sync the VSI filter list with HW
7123  * @pf: board private structure
7124  **/
7125 static void i40e_sync_udp_filters_subtask(struct i40e_pf *pf)
7126 {
7127         struct i40e_hw *hw = &pf->hw;
7128         i40e_status ret;
7129         __be16 port;
7130         int i;
7131
7132         if (!(pf->flags & I40E_FLAG_UDP_FILTER_SYNC))
7133                 return;
7134
7135         pf->flags &= ~I40E_FLAG_UDP_FILTER_SYNC;
7136
7137         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7138                 if (pf->pending_udp_bitmap & BIT_ULL(i)) {
7139                         pf->pending_udp_bitmap &= ~BIT_ULL(i);
7140                         port = pf->udp_ports[i].index;
7141                         if (port)
7142                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
7143                                                      pf->udp_ports[i].type,
7144                                                      NULL, NULL);
7145                         else
7146                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
7147
7148                         if (ret) {
7149                                 dev_dbg(&pf->pdev->dev,
7150                                         "%s %s port %d, index %d failed, err %s aq_err %s\n",
7151                                         pf->udp_ports[i].type ? "vxlan" : "geneve",
7152                                         port ? "add" : "delete",
7153                                         ntohs(port), i,
7154                                         i40e_stat_str(&pf->hw, ret),
7155                                         i40e_aq_str(&pf->hw,
7156                                                     pf->hw.aq.asq_last_status));
7157                                 pf->udp_ports[i].index = 0;
7158                         }
7159                 }
7160         }
7161 }
7162
7163 /**
7164  * i40e_service_task - Run the driver's async subtasks
7165  * @work: pointer to work_struct containing our data
7166  **/
7167 static void i40e_service_task(struct work_struct *work)
7168 {
7169         struct i40e_pf *pf = container_of(work,
7170                                           struct i40e_pf,
7171                                           service_task);
7172         unsigned long start_time = jiffies;
7173
7174         /* don't bother with service tasks if a reset is in progress */
7175         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7176                 i40e_service_event_complete(pf);
7177                 return;
7178         }
7179
7180         i40e_detect_recover_hung(pf);
7181         i40e_sync_filters_subtask(pf);
7182         i40e_reset_subtask(pf);
7183         i40e_handle_mdd_event(pf);
7184         i40e_vc_process_vflr_event(pf);
7185         i40e_watchdog_subtask(pf);
7186         i40e_fdir_reinit_subtask(pf);
7187         i40e_client_subtask(pf);
7188         i40e_sync_filters_subtask(pf);
7189         i40e_sync_udp_filters_subtask(pf);
7190         i40e_clean_adminq_subtask(pf);
7191
7192         i40e_service_event_complete(pf);
7193
7194         /* If the tasks have taken longer than one timer cycle or there
7195          * is more work to be done, reschedule the service task now
7196          * rather than wait for the timer to tick again.
7197          */
7198         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
7199             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
7200             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
7201             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
7202                 i40e_service_event_schedule(pf);
7203 }
7204
7205 /**
7206  * i40e_service_timer - timer callback
7207  * @data: pointer to PF struct
7208  **/
7209 static void i40e_service_timer(unsigned long data)
7210 {
7211         struct i40e_pf *pf = (struct i40e_pf *)data;
7212
7213         mod_timer(&pf->service_timer,
7214                   round_jiffies(jiffies + pf->service_timer_period));
7215         i40e_service_event_schedule(pf);
7216 }
7217
7218 /**
7219  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
7220  * @vsi: the VSI being configured
7221  **/
7222 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
7223 {
7224         struct i40e_pf *pf = vsi->back;
7225
7226         switch (vsi->type) {
7227         case I40E_VSI_MAIN:
7228                 vsi->alloc_queue_pairs = pf->num_lan_qps;
7229                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7230                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7231                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7232                         vsi->num_q_vectors = pf->num_lan_msix;
7233                 else
7234                         vsi->num_q_vectors = 1;
7235
7236                 break;
7237
7238         case I40E_VSI_FDIR:
7239                 vsi->alloc_queue_pairs = 1;
7240                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
7241                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7242                 vsi->num_q_vectors = pf->num_fdsb_msix;
7243                 break;
7244
7245         case I40E_VSI_VMDQ2:
7246                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
7247                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7248                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7249                 vsi->num_q_vectors = pf->num_vmdq_msix;
7250                 break;
7251
7252         case I40E_VSI_SRIOV:
7253                 vsi->alloc_queue_pairs = pf->num_vf_qps;
7254                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7255                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7256                 break;
7257
7258 #ifdef I40E_FCOE
7259         case I40E_VSI_FCOE:
7260                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
7261                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7262                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7263                 vsi->num_q_vectors = pf->num_fcoe_msix;
7264                 break;
7265
7266 #endif /* I40E_FCOE */
7267         default:
7268                 WARN_ON(1);
7269                 return -ENODATA;
7270         }
7271
7272         return 0;
7273 }
7274
7275 /**
7276  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
7277  * @type: VSI pointer
7278  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
7279  *
7280  * On error: returns error code (negative)
7281  * On success: returns 0
7282  **/
7283 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
7284 {
7285         int size;
7286         int ret = 0;
7287
7288         /* allocate memory for both Tx and Rx ring pointers */
7289         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
7290         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
7291         if (!vsi->tx_rings)
7292                 return -ENOMEM;
7293         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
7294
7295         if (alloc_qvectors) {
7296                 /* allocate memory for q_vector pointers */
7297                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
7298                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
7299                 if (!vsi->q_vectors) {
7300                         ret = -ENOMEM;
7301                         goto err_vectors;
7302                 }
7303         }
7304         return ret;
7305
7306 err_vectors:
7307         kfree(vsi->tx_rings);
7308         return ret;
7309 }
7310
7311 /**
7312  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
7313  * @pf: board private structure
7314  * @type: type of VSI
7315  *
7316  * On error: returns error code (negative)
7317  * On success: returns vsi index in PF (positive)
7318  **/
7319 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7320 {
7321         int ret = -ENODEV;
7322         struct i40e_vsi *vsi;
7323         int vsi_idx;
7324         int i;
7325
7326         /* Need to protect the allocation of the VSIs at the PF level */
7327         mutex_lock(&pf->switch_mutex);
7328
7329         /* VSI list may be fragmented if VSI creation/destruction has
7330          * been happening.  We can afford to do a quick scan to look
7331          * for any free VSIs in the list.
7332          *
7333          * find next empty vsi slot, looping back around if necessary
7334          */
7335         i = pf->next_vsi;
7336         while (i < pf->num_alloc_vsi && pf->vsi[i])
7337                 i++;
7338         if (i >= pf->num_alloc_vsi) {
7339                 i = 0;
7340                 while (i < pf->next_vsi && pf->vsi[i])
7341                         i++;
7342         }
7343
7344         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7345                 vsi_idx = i;             /* Found one! */
7346         } else {
7347                 ret = -ENODEV;
7348                 goto unlock_pf;  /* out of VSI slots! */
7349         }
7350         pf->next_vsi = ++i;
7351
7352         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7353         if (!vsi) {
7354                 ret = -ENOMEM;
7355                 goto unlock_pf;
7356         }
7357         vsi->type = type;
7358         vsi->back = pf;
7359         set_bit(__I40E_DOWN, &vsi->state);
7360         vsi->flags = 0;
7361         vsi->idx = vsi_idx;
7362         vsi->int_rate_limit = 0;
7363         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7364                                 pf->rss_table_size : 64;
7365         vsi->netdev_registered = false;
7366         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7367         INIT_LIST_HEAD(&vsi->mac_filter_list);
7368         vsi->irqs_ready = false;
7369
7370         ret = i40e_set_num_rings_in_vsi(vsi);
7371         if (ret)
7372                 goto err_rings;
7373
7374         ret = i40e_vsi_alloc_arrays(vsi, true);
7375         if (ret)
7376                 goto err_rings;
7377
7378         /* Setup default MSIX irq handler for VSI */
7379         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7380
7381         /* Initialize VSI lock */
7382         spin_lock_init(&vsi->mac_filter_list_lock);
7383         pf->vsi[vsi_idx] = vsi;
7384         ret = vsi_idx;
7385         goto unlock_pf;
7386
7387 err_rings:
7388         pf->next_vsi = i - 1;
7389         kfree(vsi);
7390 unlock_pf:
7391         mutex_unlock(&pf->switch_mutex);
7392         return ret;
7393 }
7394
7395 /**
7396  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7397  * @type: VSI pointer
7398  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7399  *
7400  * On error: returns error code (negative)
7401  * On success: returns 0
7402  **/
7403 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7404 {
7405         /* free the ring and vector containers */
7406         if (free_qvectors) {
7407                 kfree(vsi->q_vectors);
7408                 vsi->q_vectors = NULL;
7409         }
7410         kfree(vsi->tx_rings);
7411         vsi->tx_rings = NULL;
7412         vsi->rx_rings = NULL;
7413 }
7414
7415 /**
7416  * i40e_clear_rss_config_user - clear the user configured RSS hash keys
7417  * and lookup table
7418  * @vsi: Pointer to VSI structure
7419  */
7420 static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
7421 {
7422         if (!vsi)
7423                 return;
7424
7425         kfree(vsi->rss_hkey_user);
7426         vsi->rss_hkey_user = NULL;
7427
7428         kfree(vsi->rss_lut_user);
7429         vsi->rss_lut_user = NULL;
7430 }
7431
7432 /**
7433  * i40e_vsi_clear - Deallocate the VSI provided
7434  * @vsi: the VSI being un-configured
7435  **/
7436 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7437 {
7438         struct i40e_pf *pf;
7439
7440         if (!vsi)
7441                 return 0;
7442
7443         if (!vsi->back)
7444                 goto free_vsi;
7445         pf = vsi->back;
7446
7447         mutex_lock(&pf->switch_mutex);
7448         if (!pf->vsi[vsi->idx]) {
7449                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7450                         vsi->idx, vsi->idx, vsi, vsi->type);
7451                 goto unlock_vsi;
7452         }
7453
7454         if (pf->vsi[vsi->idx] != vsi) {
7455                 dev_err(&pf->pdev->dev,
7456                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7457                         pf->vsi[vsi->idx]->idx,
7458                         pf->vsi[vsi->idx],
7459                         pf->vsi[vsi->idx]->type,
7460                         vsi->idx, vsi, vsi->type);
7461                 goto unlock_vsi;
7462         }
7463
7464         /* updates the PF for this cleared vsi */
7465         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7466         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7467
7468         i40e_vsi_free_arrays(vsi, true);
7469         i40e_clear_rss_config_user(vsi);
7470
7471         pf->vsi[vsi->idx] = NULL;
7472         if (vsi->idx < pf->next_vsi)
7473                 pf->next_vsi = vsi->idx;
7474
7475 unlock_vsi:
7476         mutex_unlock(&pf->switch_mutex);
7477 free_vsi:
7478         kfree(vsi);
7479
7480         return 0;
7481 }
7482
7483 /**
7484  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7485  * @vsi: the VSI being cleaned
7486  **/
7487 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7488 {
7489         int i;
7490
7491         if (vsi->tx_rings && vsi->tx_rings[0]) {
7492                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7493                         kfree_rcu(vsi->tx_rings[i], rcu);
7494                         vsi->tx_rings[i] = NULL;
7495                         vsi->rx_rings[i] = NULL;
7496                 }
7497         }
7498 }
7499
7500 /**
7501  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7502  * @vsi: the VSI being configured
7503  **/
7504 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7505 {
7506         struct i40e_ring *tx_ring, *rx_ring;
7507         struct i40e_pf *pf = vsi->back;
7508         int i;
7509
7510         /* Set basic values in the rings to be used later during open() */
7511         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7512                 /* allocate space for both Tx and Rx in one shot */
7513                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7514                 if (!tx_ring)
7515                         goto err_out;
7516
7517                 tx_ring->queue_index = i;
7518                 tx_ring->reg_idx = vsi->base_queue + i;
7519                 tx_ring->ring_active = false;
7520                 tx_ring->vsi = vsi;
7521                 tx_ring->netdev = vsi->netdev;
7522                 tx_ring->dev = &pf->pdev->dev;
7523                 tx_ring->count = vsi->num_desc;
7524                 tx_ring->size = 0;
7525                 tx_ring->dcb_tc = 0;
7526                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7527                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7528                 tx_ring->tx_itr_setting = pf->tx_itr_default;
7529                 vsi->tx_rings[i] = tx_ring;
7530
7531                 rx_ring = &tx_ring[1];
7532                 rx_ring->queue_index = i;
7533                 rx_ring->reg_idx = vsi->base_queue + i;
7534                 rx_ring->ring_active = false;
7535                 rx_ring->vsi = vsi;
7536                 rx_ring->netdev = vsi->netdev;
7537                 rx_ring->dev = &pf->pdev->dev;
7538                 rx_ring->count = vsi->num_desc;
7539                 rx_ring->size = 0;
7540                 rx_ring->dcb_tc = 0;
7541                 rx_ring->rx_itr_setting = pf->rx_itr_default;
7542                 vsi->rx_rings[i] = rx_ring;
7543         }
7544
7545         return 0;
7546
7547 err_out:
7548         i40e_vsi_clear_rings(vsi);
7549         return -ENOMEM;
7550 }
7551
7552 /**
7553  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7554  * @pf: board private structure
7555  * @vectors: the number of MSI-X vectors to request
7556  *
7557  * Returns the number of vectors reserved, or error
7558  **/
7559 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7560 {
7561         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7562                                         I40E_MIN_MSIX, vectors);
7563         if (vectors < 0) {
7564                 dev_info(&pf->pdev->dev,
7565                          "MSI-X vector reservation failed: %d\n", vectors);
7566                 vectors = 0;
7567         }
7568
7569         return vectors;
7570 }
7571
7572 /**
7573  * i40e_init_msix - Setup the MSIX capability
7574  * @pf: board private structure
7575  *
7576  * Work with the OS to set up the MSIX vectors needed.
7577  *
7578  * Returns the number of vectors reserved or negative on failure
7579  **/
7580 static int i40e_init_msix(struct i40e_pf *pf)
7581 {
7582         struct i40e_hw *hw = &pf->hw;
7583         int vectors_left;
7584         int v_budget, i;
7585         int v_actual;
7586         int iwarp_requested = 0;
7587
7588         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7589                 return -ENODEV;
7590
7591         /* The number of vectors we'll request will be comprised of:
7592          *   - Add 1 for "other" cause for Admin Queue events, etc.
7593          *   - The number of LAN queue pairs
7594          *      - Queues being used for RSS.
7595          *              We don't need as many as max_rss_size vectors.
7596          *              use rss_size instead in the calculation since that
7597          *              is governed by number of cpus in the system.
7598          *      - assumes symmetric Tx/Rx pairing
7599          *   - The number of VMDq pairs
7600          *   - The CPU count within the NUMA node if iWARP is enabled
7601 #ifdef I40E_FCOE
7602          *   - The number of FCOE qps.
7603 #endif
7604          * Once we count this up, try the request.
7605          *
7606          * If we can't get what we want, we'll simplify to nearly nothing
7607          * and try again.  If that still fails, we punt.
7608          */
7609         vectors_left = hw->func_caps.num_msix_vectors;
7610         v_budget = 0;
7611
7612         /* reserve one vector for miscellaneous handler */
7613         if (vectors_left) {
7614                 v_budget++;
7615                 vectors_left--;
7616         }
7617
7618         /* reserve vectors for the main PF traffic queues */
7619         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7620         vectors_left -= pf->num_lan_msix;
7621         v_budget += pf->num_lan_msix;
7622
7623         /* reserve one vector for sideband flow director */
7624         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7625                 if (vectors_left) {
7626                         pf->num_fdsb_msix = 1;
7627                         v_budget++;
7628                         vectors_left--;
7629                 } else {
7630                         pf->num_fdsb_msix = 0;
7631                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7632                 }
7633         }
7634
7635 #ifdef I40E_FCOE
7636         /* can we reserve enough for FCoE? */
7637         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7638                 if (!vectors_left)
7639                         pf->num_fcoe_msix = 0;
7640                 else if (vectors_left >= pf->num_fcoe_qps)
7641                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7642                 else
7643                         pf->num_fcoe_msix = 1;
7644                 v_budget += pf->num_fcoe_msix;
7645                 vectors_left -= pf->num_fcoe_msix;
7646         }
7647
7648 #endif
7649         /* can we reserve enough for iWARP? */
7650         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7651                 if (!vectors_left)
7652                         pf->num_iwarp_msix = 0;
7653                 else if (vectors_left < pf->num_iwarp_msix)
7654                         pf->num_iwarp_msix = 1;
7655                 v_budget += pf->num_iwarp_msix;
7656                 vectors_left -= pf->num_iwarp_msix;
7657         }
7658
7659         /* any vectors left over go for VMDq support */
7660         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7661                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7662                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7663
7664                 /* if we're short on vectors for what's desired, we limit
7665                  * the queues per vmdq.  If this is still more than are
7666                  * available, the user will need to change the number of
7667                  * queues/vectors used by the PF later with the ethtool
7668                  * channels command
7669                  */
7670                 if (vmdq_vecs < vmdq_vecs_wanted)
7671                         pf->num_vmdq_qps = 1;
7672                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7673
7674                 v_budget += vmdq_vecs;
7675                 vectors_left -= vmdq_vecs;
7676         }
7677
7678         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7679                                    GFP_KERNEL);
7680         if (!pf->msix_entries)
7681                 return -ENOMEM;
7682
7683         for (i = 0; i < v_budget; i++)
7684                 pf->msix_entries[i].entry = i;
7685         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7686
7687         if (v_actual != v_budget) {
7688                 /* If we have limited resources, we will start with no vectors
7689                  * for the special features and then allocate vectors to some
7690                  * of these features based on the policy and at the end disable
7691                  * the features that did not get any vectors.
7692                  */
7693                 iwarp_requested = pf->num_iwarp_msix;
7694                 pf->num_iwarp_msix = 0;
7695 #ifdef I40E_FCOE
7696                 pf->num_fcoe_qps = 0;
7697                 pf->num_fcoe_msix = 0;
7698 #endif
7699                 pf->num_vmdq_msix = 0;
7700         }
7701
7702         if (v_actual < I40E_MIN_MSIX) {
7703                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7704                 kfree(pf->msix_entries);
7705                 pf->msix_entries = NULL;
7706                 return -ENODEV;
7707
7708         } else if (v_actual == I40E_MIN_MSIX) {
7709                 /* Adjust for minimal MSIX use */
7710                 pf->num_vmdq_vsis = 0;
7711                 pf->num_vmdq_qps = 0;
7712                 pf->num_lan_qps = 1;
7713                 pf->num_lan_msix = 1;
7714
7715         } else if (v_actual != v_budget) {
7716                 int vec;
7717
7718                 /* reserve the misc vector */
7719                 vec = v_actual - 1;
7720
7721                 /* Scale vector usage down */
7722                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7723                 pf->num_vmdq_vsis = 1;
7724                 pf->num_vmdq_qps = 1;
7725                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7726
7727                 /* partition out the remaining vectors */
7728                 switch (vec) {
7729                 case 2:
7730                         pf->num_lan_msix = 1;
7731                         break;
7732                 case 3:
7733                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7734                                 pf->num_lan_msix = 1;
7735                                 pf->num_iwarp_msix = 1;
7736                         } else {
7737                                 pf->num_lan_msix = 2;
7738                         }
7739 #ifdef I40E_FCOE
7740                         /* give one vector to FCoE */
7741                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7742                                 pf->num_lan_msix = 1;
7743                                 pf->num_fcoe_msix = 1;
7744                         }
7745 #endif
7746                         break;
7747                 default:
7748                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7749                                 pf->num_iwarp_msix = min_t(int, (vec / 3),
7750                                                  iwarp_requested);
7751                                 pf->num_vmdq_vsis = min_t(int, (vec / 3),
7752                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7753                         } else {
7754                                 pf->num_vmdq_vsis = min_t(int, (vec / 2),
7755                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7756                         }
7757                         pf->num_lan_msix = min_t(int,
7758                                (vec - (pf->num_iwarp_msix + pf->num_vmdq_vsis)),
7759                                                               pf->num_lan_msix);
7760 #ifdef I40E_FCOE
7761                         /* give one vector to FCoE */
7762                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7763                                 pf->num_fcoe_msix = 1;
7764                                 vec--;
7765                         }
7766 #endif
7767                         break;
7768                 }
7769         }
7770
7771         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7772             (pf->num_vmdq_msix == 0)) {
7773                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7774                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7775         }
7776
7777         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
7778             (pf->num_iwarp_msix == 0)) {
7779                 dev_info(&pf->pdev->dev, "IWARP disabled, not enough MSI-X vectors\n");
7780                 pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
7781         }
7782 #ifdef I40E_FCOE
7783
7784         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7785                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7786                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7787         }
7788 #endif
7789         return v_actual;
7790 }
7791
7792 /**
7793  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7794  * @vsi: the VSI being configured
7795  * @v_idx: index of the vector in the vsi struct
7796  * @cpu: cpu to be used on affinity_mask
7797  *
7798  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7799  **/
7800 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx, int cpu)
7801 {
7802         struct i40e_q_vector *q_vector;
7803
7804         /* allocate q_vector */
7805         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7806         if (!q_vector)
7807                 return -ENOMEM;
7808
7809         q_vector->vsi = vsi;
7810         q_vector->v_idx = v_idx;
7811         cpumask_set_cpu(cpu, &q_vector->affinity_mask);
7812
7813         if (vsi->netdev)
7814                 netif_napi_add(vsi->netdev, &q_vector->napi,
7815                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7816
7817         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7818         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7819
7820         /* tie q_vector and vsi together */
7821         vsi->q_vectors[v_idx] = q_vector;
7822
7823         return 0;
7824 }
7825
7826 /**
7827  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7828  * @vsi: the VSI being configured
7829  *
7830  * We allocate one q_vector per queue interrupt.  If allocation fails we
7831  * return -ENOMEM.
7832  **/
7833 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7834 {
7835         struct i40e_pf *pf = vsi->back;
7836         int err, v_idx, num_q_vectors, current_cpu;
7837
7838         /* if not MSIX, give the one vector only to the LAN VSI */
7839         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7840                 num_q_vectors = vsi->num_q_vectors;
7841         else if (vsi == pf->vsi[pf->lan_vsi])
7842                 num_q_vectors = 1;
7843         else
7844                 return -EINVAL;
7845
7846         current_cpu = cpumask_first(cpu_online_mask);
7847
7848         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7849                 err = i40e_vsi_alloc_q_vector(vsi, v_idx, current_cpu);
7850                 if (err)
7851                         goto err_out;
7852                 current_cpu = cpumask_next(current_cpu, cpu_online_mask);
7853                 if (unlikely(current_cpu >= nr_cpu_ids))
7854                         current_cpu = cpumask_first(cpu_online_mask);
7855         }
7856
7857         return 0;
7858
7859 err_out:
7860         while (v_idx--)
7861                 i40e_free_q_vector(vsi, v_idx);
7862
7863         return err;
7864 }
7865
7866 /**
7867  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7868  * @pf: board private structure to initialize
7869  **/
7870 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7871 {
7872         int vectors = 0;
7873         ssize_t size;
7874
7875         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7876                 vectors = i40e_init_msix(pf);
7877                 if (vectors < 0) {
7878                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7879                                        I40E_FLAG_IWARP_ENABLED  |
7880 #ifdef I40E_FCOE
7881                                        I40E_FLAG_FCOE_ENABLED   |
7882 #endif
7883                                        I40E_FLAG_RSS_ENABLED    |
7884                                        I40E_FLAG_DCB_CAPABLE    |
7885                                        I40E_FLAG_SRIOV_ENABLED  |
7886                                        I40E_FLAG_FD_SB_ENABLED  |
7887                                        I40E_FLAG_FD_ATR_ENABLED |
7888                                        I40E_FLAG_VMDQ_ENABLED);
7889
7890                         /* rework the queue expectations without MSIX */
7891                         i40e_determine_queue_usage(pf);
7892                 }
7893         }
7894
7895         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7896             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7897                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7898                 vectors = pci_enable_msi(pf->pdev);
7899                 if (vectors < 0) {
7900                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7901                                  vectors);
7902                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7903                 }
7904                 vectors = 1;  /* one MSI or Legacy vector */
7905         }
7906
7907         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7908                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7909
7910         /* set up vector assignment tracking */
7911         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7912         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7913         if (!pf->irq_pile) {
7914                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7915                 return -ENOMEM;
7916         }
7917         pf->irq_pile->num_entries = vectors;
7918         pf->irq_pile->search_hint = 0;
7919
7920         /* track first vector for misc interrupts, ignore return */
7921         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7922
7923         return 0;
7924 }
7925
7926 /**
7927  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7928  * @pf: board private structure
7929  *
7930  * This sets up the handler for MSIX 0, which is used to manage the
7931  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7932  * when in MSI or Legacy interrupt mode.
7933  **/
7934 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7935 {
7936         struct i40e_hw *hw = &pf->hw;
7937         int err = 0;
7938
7939         /* Only request the irq if this is the first time through, and
7940          * not when we're rebuilding after a Reset
7941          */
7942         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7943                 err = request_irq(pf->msix_entries[0].vector,
7944                                   i40e_intr, 0, pf->int_name, pf);
7945                 if (err) {
7946                         dev_info(&pf->pdev->dev,
7947                                  "request_irq for %s failed: %d\n",
7948                                  pf->int_name, err);
7949                         return -EFAULT;
7950                 }
7951         }
7952
7953         i40e_enable_misc_int_causes(pf);
7954
7955         /* associate no queues to the misc vector */
7956         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7957         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7958
7959         i40e_flush(hw);
7960
7961         i40e_irq_dynamic_enable_icr0(pf, true);
7962
7963         return err;
7964 }
7965
7966 /**
7967  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7968  * @vsi: vsi structure
7969  * @seed: RSS hash seed
7970  **/
7971 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
7972                               u8 *lut, u16 lut_size)
7973 {
7974         struct i40e_aqc_get_set_rss_key_data rss_key;
7975         struct i40e_pf *pf = vsi->back;
7976         struct i40e_hw *hw = &pf->hw;
7977         bool pf_lut = false;
7978         u8 *rss_lut;
7979         int ret, i;
7980
7981         memcpy(&rss_key, seed, sizeof(rss_key));
7982
7983         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7984         if (!rss_lut)
7985                 return -ENOMEM;
7986
7987         /* Populate the LUT with max no. of queues in round robin fashion */
7988         for (i = 0; i < vsi->rss_table_size; i++)
7989                 rss_lut[i] = i % vsi->rss_size;
7990
7991         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
7992         if (ret) {
7993                 dev_info(&pf->pdev->dev,
7994                          "Cannot set RSS key, err %s aq_err %s\n",
7995                          i40e_stat_str(&pf->hw, ret),
7996                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7997                 goto config_rss_aq_out;
7998         }
7999
8000         if (vsi->type == I40E_VSI_MAIN)
8001                 pf_lut = true;
8002
8003         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
8004                                   vsi->rss_table_size);
8005         if (ret)
8006                 dev_info(&pf->pdev->dev,
8007                          "Cannot set RSS lut, err %s aq_err %s\n",
8008                          i40e_stat_str(&pf->hw, ret),
8009                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
8010
8011 config_rss_aq_out:
8012         kfree(rss_lut);
8013         return ret;
8014 }
8015
8016 /**
8017  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
8018  * @vsi: VSI structure
8019  **/
8020 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
8021 {
8022         u8 seed[I40E_HKEY_ARRAY_SIZE];
8023         struct i40e_pf *pf = vsi->back;
8024         u8 *lut;
8025         int ret;
8026
8027         if (!(pf->flags & I40E_FLAG_RSS_AQ_CAPABLE))
8028                 return 0;
8029
8030         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8031         if (!lut)
8032                 return -ENOMEM;
8033
8034         i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8035         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8036         vsi->rss_size = min_t(int, pf->alloc_rss_size, vsi->num_queue_pairs);
8037         ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
8038         kfree(lut);
8039
8040         return ret;
8041 }
8042
8043 /**
8044  * i40e_get_rss_aq - Get RSS keys and lut by using AQ commands
8045  * @vsi: Pointer to vsi structure
8046  * @seed: Buffter to store the hash keys
8047  * @lut: Buffer to store the lookup table entries
8048  * @lut_size: Size of buffer to store the lookup table entries
8049  *
8050  * Return 0 on success, negative on failure
8051  */
8052 static int i40e_get_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
8053                            u8 *lut, u16 lut_size)
8054 {
8055         struct i40e_pf *pf = vsi->back;
8056         struct i40e_hw *hw = &pf->hw;
8057         int ret = 0;
8058
8059         if (seed) {
8060                 ret = i40e_aq_get_rss_key(hw, vsi->id,
8061                         (struct i40e_aqc_get_set_rss_key_data *)seed);
8062                 if (ret) {
8063                         dev_info(&pf->pdev->dev,
8064                                  "Cannot get RSS key, err %s aq_err %s\n",
8065                                  i40e_stat_str(&pf->hw, ret),
8066                                  i40e_aq_str(&pf->hw,
8067                                              pf->hw.aq.asq_last_status));
8068                         return ret;
8069                 }
8070         }
8071
8072         if (lut) {
8073                 bool pf_lut = vsi->type == I40E_VSI_MAIN ? true : false;
8074
8075                 ret = i40e_aq_get_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
8076                 if (ret) {
8077                         dev_info(&pf->pdev->dev,
8078                                  "Cannot get RSS lut, err %s aq_err %s\n",
8079                                  i40e_stat_str(&pf->hw, ret),
8080                                  i40e_aq_str(&pf->hw,
8081                                              pf->hw.aq.asq_last_status));
8082                         return ret;
8083                 }
8084         }
8085
8086         return ret;
8087 }
8088
8089 /**
8090  * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
8091  * @vsi: Pointer to vsi structure
8092  * @seed: RSS hash seed
8093  * @lut: Lookup table
8094  * @lut_size: Lookup table size
8095  *
8096  * Returns 0 on success, negative on failure
8097  **/
8098 static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
8099                                const u8 *lut, u16 lut_size)
8100 {
8101         struct i40e_pf *pf = vsi->back;
8102         struct i40e_hw *hw = &pf->hw;
8103         u16 vf_id = vsi->vf_id;
8104         u8 i;
8105
8106         /* Fill out hash function seed */
8107         if (seed) {
8108                 u32 *seed_dw = (u32 *)seed;
8109
8110                 if (vsi->type == I40E_VSI_MAIN) {
8111                         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8112                                 i40e_write_rx_ctl(hw, I40E_PFQF_HKEY(i),
8113                                                   seed_dw[i]);
8114                 } else if (vsi->type == I40E_VSI_SRIOV) {
8115                         for (i = 0; i <= I40E_VFQF_HKEY1_MAX_INDEX; i++)
8116                                 i40e_write_rx_ctl(hw,
8117                                                   I40E_VFQF_HKEY1(i, vf_id),
8118                                                   seed_dw[i]);
8119                 } else {
8120                         dev_err(&pf->pdev->dev, "Cannot set RSS seed - invalid VSI type\n");
8121                 }
8122         }
8123
8124         if (lut) {
8125                 u32 *lut_dw = (u32 *)lut;
8126
8127                 if (vsi->type == I40E_VSI_MAIN) {
8128                         if (lut_size != I40E_HLUT_ARRAY_SIZE)
8129                                 return -EINVAL;
8130                         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8131                                 wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
8132                 } else if (vsi->type == I40E_VSI_SRIOV) {
8133                         if (lut_size != I40E_VF_HLUT_ARRAY_SIZE)
8134                                 return -EINVAL;
8135                         for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
8136                                 i40e_write_rx_ctl(hw,
8137                                                   I40E_VFQF_HLUT1(i, vf_id),
8138                                                   lut_dw[i]);
8139                 } else {
8140                         dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
8141                 }
8142         }
8143         i40e_flush(hw);
8144
8145         return 0;
8146 }
8147
8148 /**
8149  * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
8150  * @vsi: Pointer to VSI structure
8151  * @seed: Buffer to store the keys
8152  * @lut: Buffer to store the lookup table entries
8153  * @lut_size: Size of buffer to store the lookup table entries
8154  *
8155  * Returns 0 on success, negative on failure
8156  */
8157 static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
8158                             u8 *lut, u16 lut_size)
8159 {
8160         struct i40e_pf *pf = vsi->back;
8161         struct i40e_hw *hw = &pf->hw;
8162         u16 i;
8163
8164         if (seed) {
8165                 u32 *seed_dw = (u32 *)seed;
8166
8167                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8168                         seed_dw[i] = i40e_read_rx_ctl(hw, I40E_PFQF_HKEY(i));
8169         }
8170         if (lut) {
8171                 u32 *lut_dw = (u32 *)lut;
8172
8173                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
8174                         return -EINVAL;
8175                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8176                         lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
8177         }
8178
8179         return 0;
8180 }
8181
8182 /**
8183  * i40e_config_rss - Configure RSS keys and lut
8184  * @vsi: Pointer to VSI structure
8185  * @seed: RSS hash seed
8186  * @lut: Lookup table
8187  * @lut_size: Lookup table size
8188  *
8189  * Returns 0 on success, negative on failure
8190  */
8191 int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8192 {
8193         struct i40e_pf *pf = vsi->back;
8194
8195         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8196                 return i40e_config_rss_aq(vsi, seed, lut, lut_size);
8197         else
8198                 return i40e_config_rss_reg(vsi, seed, lut, lut_size);
8199 }
8200
8201 /**
8202  * i40e_get_rss - Get RSS keys and lut
8203  * @vsi: Pointer to VSI structure
8204  * @seed: Buffer to store the keys
8205  * @lut: Buffer to store the lookup table entries
8206  * lut_size: Size of buffer to store the lookup table entries
8207  *
8208  * Returns 0 on success, negative on failure
8209  */
8210 int i40e_get_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_get_rss_aq(vsi, seed, lut, lut_size);
8216         else
8217                 return i40e_get_rss_reg(vsi, seed, lut, lut_size);
8218 }
8219
8220 /**
8221  * i40e_fill_rss_lut - Fill the RSS lookup table with default values
8222  * @pf: Pointer to board private structure
8223  * @lut: Lookup table
8224  * @rss_table_size: Lookup table size
8225  * @rss_size: Range of queue number for hashing
8226  */
8227 static void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
8228                               u16 rss_table_size, u16 rss_size)
8229 {
8230         u16 i;
8231
8232         for (i = 0; i < rss_table_size; i++)
8233                 lut[i] = i % rss_size;
8234 }
8235
8236 /**
8237  * i40e_pf_config_rss - Prepare for RSS if used
8238  * @pf: board private structure
8239  **/
8240 static int i40e_pf_config_rss(struct i40e_pf *pf)
8241 {
8242         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8243         u8 seed[I40E_HKEY_ARRAY_SIZE];
8244         u8 *lut;
8245         struct i40e_hw *hw = &pf->hw;
8246         u32 reg_val;
8247         u64 hena;
8248         int ret;
8249
8250         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
8251         hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
8252                 ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
8253         hena |= i40e_pf_get_default_rss_hena(pf);
8254
8255         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
8256         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
8257
8258         /* Determine the RSS table size based on the hardware capabilities */
8259         reg_val = i40e_read_rx_ctl(hw, I40E_PFQF_CTL_0);
8260         reg_val = (pf->rss_table_size == 512) ?
8261                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
8262                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
8263         i40e_write_rx_ctl(hw, I40E_PFQF_CTL_0, reg_val);
8264
8265         /* Determine the RSS size of the VSI */
8266         if (!vsi->rss_size)
8267                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8268                                       vsi->num_queue_pairs);
8269
8270         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8271         if (!lut)
8272                 return -ENOMEM;
8273
8274         /* Use user configured lut if there is one, otherwise use default */
8275         if (vsi->rss_lut_user)
8276                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8277         else
8278                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8279
8280         /* Use user configured hash key if there is one, otherwise
8281          * use default.
8282          */
8283         if (vsi->rss_hkey_user)
8284                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8285         else
8286                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8287         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
8288         kfree(lut);
8289
8290         return ret;
8291 }
8292
8293 /**
8294  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
8295  * @pf: board private structure
8296  * @queue_count: the requested queue count for rss.
8297  *
8298  * returns 0 if rss is not enabled, if enabled returns the final rss queue
8299  * count which may be different from the requested queue count.
8300  **/
8301 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
8302 {
8303         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8304         int new_rss_size;
8305
8306         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
8307                 return 0;
8308
8309         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
8310
8311         if (queue_count != vsi->num_queue_pairs) {
8312                 vsi->req_queue_pairs = queue_count;
8313                 i40e_prep_for_reset(pf);
8314
8315                 pf->alloc_rss_size = new_rss_size;
8316
8317                 i40e_reset_and_rebuild(pf, true);
8318
8319                 /* Discard the user configured hash keys and lut, if less
8320                  * queues are enabled.
8321                  */
8322                 if (queue_count < vsi->rss_size) {
8323                         i40e_clear_rss_config_user(vsi);
8324                         dev_dbg(&pf->pdev->dev,
8325                                 "discard user configured hash keys and lut\n");
8326                 }
8327
8328                 /* Reset vsi->rss_size, as number of enabled queues changed */
8329                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8330                                       vsi->num_queue_pairs);
8331
8332                 i40e_pf_config_rss(pf);
8333         }
8334         dev_info(&pf->pdev->dev, "RSS count/HW max RSS count:  %d/%d\n",
8335                  pf->alloc_rss_size, pf->rss_size_max);
8336         return pf->alloc_rss_size;
8337 }
8338
8339 /**
8340  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
8341  * @pf: board private structure
8342  **/
8343 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
8344 {
8345         i40e_status status;
8346         bool min_valid, max_valid;
8347         u32 max_bw, min_bw;
8348
8349         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
8350                                            &min_valid, &max_valid);
8351
8352         if (!status) {
8353                 if (min_valid)
8354                         pf->npar_min_bw = min_bw;
8355                 if (max_valid)
8356                         pf->npar_max_bw = max_bw;
8357         }
8358
8359         return status;
8360 }
8361
8362 /**
8363  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
8364  * @pf: board private structure
8365  **/
8366 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
8367 {
8368         struct i40e_aqc_configure_partition_bw_data bw_data;
8369         i40e_status status;
8370
8371         /* Set the valid bit for this PF */
8372         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
8373         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
8374         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
8375
8376         /* Set the new bandwidths */
8377         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
8378
8379         return status;
8380 }
8381
8382 /**
8383  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
8384  * @pf: board private structure
8385  **/
8386 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
8387 {
8388         /* Commit temporary BW setting to permanent NVM image */
8389         enum i40e_admin_queue_err last_aq_status;
8390         i40e_status ret;
8391         u16 nvm_word;
8392
8393         if (pf->hw.partition_id != 1) {
8394                 dev_info(&pf->pdev->dev,
8395                          "Commit BW only works on partition 1! This is partition %d",
8396                          pf->hw.partition_id);
8397                 ret = I40E_NOT_SUPPORTED;
8398                 goto bw_commit_out;
8399         }
8400
8401         /* Acquire NVM for read access */
8402         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
8403         last_aq_status = pf->hw.aq.asq_last_status;
8404         if (ret) {
8405                 dev_info(&pf->pdev->dev,
8406                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
8407                          i40e_stat_str(&pf->hw, ret),
8408                          i40e_aq_str(&pf->hw, last_aq_status));
8409                 goto bw_commit_out;
8410         }
8411
8412         /* Read word 0x10 of NVM - SW compatibility word 1 */
8413         ret = i40e_aq_read_nvm(&pf->hw,
8414                                I40E_SR_NVM_CONTROL_WORD,
8415                                0x10, sizeof(nvm_word), &nvm_word,
8416                                false, NULL);
8417         /* Save off last admin queue command status before releasing
8418          * the NVM
8419          */
8420         last_aq_status = pf->hw.aq.asq_last_status;
8421         i40e_release_nvm(&pf->hw);
8422         if (ret) {
8423                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
8424                          i40e_stat_str(&pf->hw, ret),
8425                          i40e_aq_str(&pf->hw, last_aq_status));
8426                 goto bw_commit_out;
8427         }
8428
8429         /* Wait a bit for NVM release to complete */
8430         msleep(50);
8431
8432         /* Acquire NVM for write access */
8433         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
8434         last_aq_status = pf->hw.aq.asq_last_status;
8435         if (ret) {
8436                 dev_info(&pf->pdev->dev,
8437                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
8438                          i40e_stat_str(&pf->hw, ret),
8439                          i40e_aq_str(&pf->hw, last_aq_status));
8440                 goto bw_commit_out;
8441         }
8442         /* Write it back out unchanged to initiate update NVM,
8443          * which will force a write of the shadow (alt) RAM to
8444          * the NVM - thus storing the bandwidth values permanently.
8445          */
8446         ret = i40e_aq_update_nvm(&pf->hw,
8447                                  I40E_SR_NVM_CONTROL_WORD,
8448                                  0x10, sizeof(nvm_word),
8449                                  &nvm_word, true, NULL);
8450         /* Save off last admin queue command status before releasing
8451          * the NVM
8452          */
8453         last_aq_status = pf->hw.aq.asq_last_status;
8454         i40e_release_nvm(&pf->hw);
8455         if (ret)
8456                 dev_info(&pf->pdev->dev,
8457                          "BW settings NOT SAVED, err %s aq_err %s\n",
8458                          i40e_stat_str(&pf->hw, ret),
8459                          i40e_aq_str(&pf->hw, last_aq_status));
8460 bw_commit_out:
8461
8462         return ret;
8463 }
8464
8465 /**
8466  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
8467  * @pf: board private structure to initialize
8468  *
8469  * i40e_sw_init initializes the Adapter private data structure.
8470  * Fields are initialized based on PCI device information and
8471  * OS network device settings (MTU size).
8472  **/
8473 static int i40e_sw_init(struct i40e_pf *pf)
8474 {
8475         int err = 0;
8476         int size;
8477
8478         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
8479                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
8480         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
8481                 if (I40E_DEBUG_USER & debug)
8482                         pf->hw.debug_mask = debug;
8483                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
8484                                                 I40E_DEFAULT_MSG_ENABLE);
8485         }
8486
8487         /* Set default capability flags */
8488         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
8489                     I40E_FLAG_MSI_ENABLED     |
8490                     I40E_FLAG_MSIX_ENABLED;
8491
8492         /* Set default ITR */
8493         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
8494         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
8495
8496         /* Depending on PF configurations, it is possible that the RSS
8497          * maximum might end up larger than the available queues
8498          */
8499         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
8500         pf->alloc_rss_size = 1;
8501         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
8502         pf->rss_size_max = min_t(int, pf->rss_size_max,
8503                                  pf->hw.func_caps.num_tx_qp);
8504         if (pf->hw.func_caps.rss) {
8505                 pf->flags |= I40E_FLAG_RSS_ENABLED;
8506                 pf->alloc_rss_size = min_t(int, pf->rss_size_max,
8507                                            num_online_cpus());
8508         }
8509
8510         /* MFP mode enabled */
8511         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
8512                 pf->flags |= I40E_FLAG_MFP_ENABLED;
8513                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
8514                 if (i40e_get_npar_bw_setting(pf))
8515                         dev_warn(&pf->pdev->dev,
8516                                  "Could not get NPAR bw settings\n");
8517                 else
8518                         dev_info(&pf->pdev->dev,
8519                                  "Min BW = %8.8x, Max BW = %8.8x\n",
8520                                  pf->npar_min_bw, pf->npar_max_bw);
8521         }
8522
8523         /* FW/NVM is not yet fixed in this regard */
8524         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
8525             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
8526                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8527                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
8528                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
8529                     pf->hw.num_partitions > 1)
8530                         dev_info(&pf->pdev->dev,
8531                                  "Flow Director Sideband mode Disabled in MFP mode\n");
8532                 else
8533                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8534                 pf->fdir_pf_filter_count =
8535                                  pf->hw.func_caps.fd_filters_guaranteed;
8536                 pf->hw.fdir_shared_filter_count =
8537                                  pf->hw.func_caps.fd_filters_best_effort;
8538         }
8539
8540         if (i40e_is_mac_710(&pf->hw) &&
8541             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
8542             (pf->hw.aq.fw_maj_ver < 4))) {
8543                 pf->flags |= I40E_FLAG_RESTART_AUTONEG;
8544                 /* No DCB support  for FW < v4.33 */
8545                 pf->flags |= I40E_FLAG_NO_DCB_SUPPORT;
8546         }
8547
8548         /* Disable FW LLDP if FW < v4.3 */
8549         if (i40e_is_mac_710(&pf->hw) &&
8550             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
8551             (pf->hw.aq.fw_maj_ver < 4)))
8552                 pf->flags |= I40E_FLAG_STOP_FW_LLDP;
8553
8554         /* Use the FW Set LLDP MIB API if FW > v4.40 */
8555         if (i40e_is_mac_710(&pf->hw) &&
8556             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver >= 40)) ||
8557             (pf->hw.aq.fw_maj_ver >= 5)))
8558                 pf->flags |= I40E_FLAG_USE_SET_LLDP_MIB;
8559
8560         if (pf->hw.func_caps.vmdq) {
8561                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
8562                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
8563                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
8564         }
8565
8566         if (pf->hw.func_caps.iwarp) {
8567                 pf->flags |= I40E_FLAG_IWARP_ENABLED;
8568                 /* IWARP needs one extra vector for CQP just like MISC.*/
8569                 pf->num_iwarp_msix = (int)num_online_cpus() + 1;
8570         }
8571
8572 #ifdef I40E_FCOE
8573         i40e_init_pf_fcoe(pf);
8574
8575 #endif /* I40E_FCOE */
8576 #ifdef CONFIG_PCI_IOV
8577         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
8578                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
8579                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
8580                 pf->num_req_vfs = min_t(int,
8581                                         pf->hw.func_caps.num_vfs,
8582                                         I40E_MAX_VF_COUNT);
8583         }
8584 #endif /* CONFIG_PCI_IOV */
8585         if (pf->hw.mac.type == I40E_MAC_X722) {
8586                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
8587                              I40E_FLAG_128_QP_RSS_CAPABLE |
8588                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
8589                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
8590                              I40E_FLAG_WB_ON_ITR_CAPABLE |
8591                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE |
8592                              I40E_FLAG_NO_PCI_LINK_CHECK |
8593                              I40E_FLAG_100M_SGMII_CAPABLE |
8594                              I40E_FLAG_USE_SET_LLDP_MIB |
8595                              I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
8596         } else if ((pf->hw.aq.api_maj_ver > 1) ||
8597                    ((pf->hw.aq.api_maj_ver == 1) &&
8598                     (pf->hw.aq.api_min_ver > 4))) {
8599                 /* Supported in FW API version higher than 1.4 */
8600                 pf->flags |= I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
8601                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8602         } else {
8603                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8604         }
8605
8606         pf->eeprom_version = 0xDEAD;
8607         pf->lan_veb = I40E_NO_VEB;
8608         pf->lan_vsi = I40E_NO_VSI;
8609
8610         /* By default FW has this off for performance reasons */
8611         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
8612
8613         /* set up queue assignment tracking */
8614         size = sizeof(struct i40e_lump_tracking)
8615                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8616         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8617         if (!pf->qp_pile) {
8618                 err = -ENOMEM;
8619                 goto sw_init_done;
8620         }
8621         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8622         pf->qp_pile->search_hint = 0;
8623
8624         pf->tx_timeout_recovery_level = 1;
8625
8626         mutex_init(&pf->switch_mutex);
8627
8628         /* If NPAR is enabled nudge the Tx scheduler */
8629         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8630                 i40e_set_npar_bw_setting(pf);
8631
8632 sw_init_done:
8633         return err;
8634 }
8635
8636 /**
8637  * i40e_set_ntuple - set the ntuple feature flag and take action
8638  * @pf: board private structure to initialize
8639  * @features: the feature set that the stack is suggesting
8640  *
8641  * returns a bool to indicate if reset needs to happen
8642  **/
8643 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8644 {
8645         bool need_reset = false;
8646
8647         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8648          * the state changed, we need to reset.
8649          */
8650         if (features & NETIF_F_NTUPLE) {
8651                 /* Enable filters and mark for reset */
8652                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8653                         need_reset = true;
8654                 /* enable FD_SB only if there is MSI-X vector */
8655                 if (pf->num_fdsb_msix > 0)
8656                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8657         } else {
8658                 /* turn off filters, mark for reset and clear SW filter list */
8659                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8660                         need_reset = true;
8661                         i40e_fdir_filter_exit(pf);
8662                 }
8663                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8664                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8665                 /* reset fd counters */
8666                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8667                 pf->fdir_pf_active_filters = 0;
8668                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8669                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8670                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8671                 /* if ATR was auto disabled it can be re-enabled. */
8672                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8673                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
8674                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8675         }
8676         return need_reset;
8677 }
8678
8679 /**
8680  * i40e_set_features - set the netdev feature flags
8681  * @netdev: ptr to the netdev being adjusted
8682  * @features: the feature set that the stack is suggesting
8683  **/
8684 static int i40e_set_features(struct net_device *netdev,
8685                              netdev_features_t features)
8686 {
8687         struct i40e_netdev_priv *np = netdev_priv(netdev);
8688         struct i40e_vsi *vsi = np->vsi;
8689         struct i40e_pf *pf = vsi->back;
8690         bool need_reset;
8691
8692         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8693                 i40e_vlan_stripping_enable(vsi);
8694         else
8695                 i40e_vlan_stripping_disable(vsi);
8696
8697         need_reset = i40e_set_ntuple(pf, features);
8698
8699         if (need_reset)
8700                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8701
8702         return 0;
8703 }
8704
8705 /**
8706  * i40e_get_udp_port_idx - Lookup a possibly offloaded for Rx UDP port
8707  * @pf: board private structure
8708  * @port: The UDP port to look up
8709  *
8710  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8711  **/
8712 static u8 i40e_get_udp_port_idx(struct i40e_pf *pf, __be16 port)
8713 {
8714         u8 i;
8715
8716         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8717                 if (pf->udp_ports[i].index == port)
8718                         return i;
8719         }
8720
8721         return i;
8722 }
8723
8724 /**
8725  * i40e_udp_tunnel_add - Get notifications about UDP tunnel ports that come up
8726  * @netdev: This physical port's netdev
8727  * @ti: Tunnel endpoint information
8728  **/
8729 static void i40e_udp_tunnel_add(struct net_device *netdev,
8730                                 struct udp_tunnel_info *ti)
8731 {
8732         struct i40e_netdev_priv *np = netdev_priv(netdev);
8733         struct i40e_vsi *vsi = np->vsi;
8734         struct i40e_pf *pf = vsi->back;
8735         __be16 port = ti->port;
8736         u8 next_idx;
8737         u8 idx;
8738
8739         idx = i40e_get_udp_port_idx(pf, port);
8740
8741         /* Check if port already exists */
8742         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8743                 netdev_info(netdev, "port %d already offloaded\n",
8744                             ntohs(port));
8745                 return;
8746         }
8747
8748         /* Now check if there is space to add the new port */
8749         next_idx = i40e_get_udp_port_idx(pf, 0);
8750
8751         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8752                 netdev_info(netdev, "maximum number of offloaded UDP ports reached, not adding port %d\n",
8753                             ntohs(port));
8754                 return;
8755         }
8756
8757         switch (ti->type) {
8758         case UDP_TUNNEL_TYPE_VXLAN:
8759                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_VXLAN;
8760                 break;
8761         case UDP_TUNNEL_TYPE_GENEVE:
8762                 if (!(pf->flags & I40E_FLAG_GENEVE_OFFLOAD_CAPABLE))
8763                         return;
8764                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_NGE;
8765                 break;
8766         default:
8767                 return;
8768         }
8769
8770         /* New port: add it and mark its index in the bitmap */
8771         pf->udp_ports[next_idx].index = port;
8772         pf->pending_udp_bitmap |= BIT_ULL(next_idx);
8773         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8774 }
8775
8776 /**
8777  * i40e_udp_tunnel_del - Get notifications about UDP tunnel ports that go away
8778  * @netdev: This physical port's netdev
8779  * @ti: Tunnel endpoint information
8780  **/
8781 static void i40e_udp_tunnel_del(struct net_device *netdev,
8782                                 struct udp_tunnel_info *ti)
8783 {
8784         struct i40e_netdev_priv *np = netdev_priv(netdev);
8785         struct i40e_vsi *vsi = np->vsi;
8786         struct i40e_pf *pf = vsi->back;
8787         __be16 port = ti->port;
8788         u8 idx;
8789
8790         idx = i40e_get_udp_port_idx(pf, port);
8791
8792         /* Check if port already exists */
8793         if (idx >= I40E_MAX_PF_UDP_OFFLOAD_PORTS)
8794                 goto not_found;
8795
8796         switch (ti->type) {
8797         case UDP_TUNNEL_TYPE_VXLAN:
8798                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_VXLAN)
8799                         goto not_found;
8800                 break;
8801         case UDP_TUNNEL_TYPE_GENEVE:
8802                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_NGE)
8803                         goto not_found;
8804                 break;
8805         default:
8806                 goto not_found;
8807         }
8808
8809         /* if port exists, set it to 0 (mark for deletion)
8810          * and make it pending
8811          */
8812         pf->udp_ports[idx].index = 0;
8813         pf->pending_udp_bitmap |= BIT_ULL(idx);
8814         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8815
8816         return;
8817 not_found:
8818         netdev_warn(netdev, "UDP port %d was not found, not deleting\n",
8819                     ntohs(port));
8820 }
8821
8822 static int i40e_get_phys_port_id(struct net_device *netdev,
8823                                  struct netdev_phys_item_id *ppid)
8824 {
8825         struct i40e_netdev_priv *np = netdev_priv(netdev);
8826         struct i40e_pf *pf = np->vsi->back;
8827         struct i40e_hw *hw = &pf->hw;
8828
8829         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8830                 return -EOPNOTSUPP;
8831
8832         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8833         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8834
8835         return 0;
8836 }
8837
8838 /**
8839  * i40e_ndo_fdb_add - add an entry to the hardware database
8840  * @ndm: the input from the stack
8841  * @tb: pointer to array of nladdr (unused)
8842  * @dev: the net device pointer
8843  * @addr: the MAC address entry being added
8844  * @flags: instructions from stack about fdb operation
8845  */
8846 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8847                             struct net_device *dev,
8848                             const unsigned char *addr, u16 vid,
8849                             u16 flags)
8850 {
8851         struct i40e_netdev_priv *np = netdev_priv(dev);
8852         struct i40e_pf *pf = np->vsi->back;
8853         int err = 0;
8854
8855         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8856                 return -EOPNOTSUPP;
8857
8858         if (vid) {
8859                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8860                 return -EINVAL;
8861         }
8862
8863         /* Hardware does not support aging addresses so if a
8864          * ndm_state is given only allow permanent addresses
8865          */
8866         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8867                 netdev_info(dev, "FDB only supports static addresses\n");
8868                 return -EINVAL;
8869         }
8870
8871         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8872                 err = dev_uc_add_excl(dev, addr);
8873         else if (is_multicast_ether_addr(addr))
8874                 err = dev_mc_add_excl(dev, addr);
8875         else
8876                 err = -EINVAL;
8877
8878         /* Only return duplicate errors if NLM_F_EXCL is set */
8879         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8880                 err = 0;
8881
8882         return err;
8883 }
8884
8885 /**
8886  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8887  * @dev: the netdev being configured
8888  * @nlh: RTNL message
8889  *
8890  * Inserts a new hardware bridge if not already created and
8891  * enables the bridging mode requested (VEB or VEPA). If the
8892  * hardware bridge has already been inserted and the request
8893  * is to change the mode then that requires a PF reset to
8894  * allow rebuild of the components with required hardware
8895  * bridge mode enabled.
8896  **/
8897 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8898                                    struct nlmsghdr *nlh,
8899                                    u16 flags)
8900 {
8901         struct i40e_netdev_priv *np = netdev_priv(dev);
8902         struct i40e_vsi *vsi = np->vsi;
8903         struct i40e_pf *pf = vsi->back;
8904         struct i40e_veb *veb = NULL;
8905         struct nlattr *attr, *br_spec;
8906         int i, rem;
8907
8908         /* Only for PF VSI for now */
8909         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8910                 return -EOPNOTSUPP;
8911
8912         /* Find the HW bridge for PF VSI */
8913         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8914                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8915                         veb = pf->veb[i];
8916         }
8917
8918         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8919
8920         nla_for_each_nested(attr, br_spec, rem) {
8921                 __u16 mode;
8922
8923                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8924                         continue;
8925
8926                 mode = nla_get_u16(attr);
8927                 if ((mode != BRIDGE_MODE_VEPA) &&
8928                     (mode != BRIDGE_MODE_VEB))
8929                         return -EINVAL;
8930
8931                 /* Insert a new HW bridge */
8932                 if (!veb) {
8933                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8934                                              vsi->tc_config.enabled_tc);
8935                         if (veb) {
8936                                 veb->bridge_mode = mode;
8937                                 i40e_config_bridge_mode(veb);
8938                         } else {
8939                                 /* No Bridge HW offload available */
8940                                 return -ENOENT;
8941                         }
8942                         break;
8943                 } else if (mode != veb->bridge_mode) {
8944                         /* Existing HW bridge but different mode needs reset */
8945                         veb->bridge_mode = mode;
8946                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8947                         if (mode == BRIDGE_MODE_VEB)
8948                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8949                         else
8950                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8951                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8952                         break;
8953                 }
8954         }
8955
8956         return 0;
8957 }
8958
8959 /**
8960  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8961  * @skb: skb buff
8962  * @pid: process id
8963  * @seq: RTNL message seq #
8964  * @dev: the netdev being configured
8965  * @filter_mask: unused
8966  * @nlflags: netlink flags passed in
8967  *
8968  * Return the mode in which the hardware bridge is operating in
8969  * i.e VEB or VEPA.
8970  **/
8971 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8972                                    struct net_device *dev,
8973                                    u32 __always_unused filter_mask,
8974                                    int nlflags)
8975 {
8976         struct i40e_netdev_priv *np = netdev_priv(dev);
8977         struct i40e_vsi *vsi = np->vsi;
8978         struct i40e_pf *pf = vsi->back;
8979         struct i40e_veb *veb = NULL;
8980         int i;
8981
8982         /* Only for PF VSI for now */
8983         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8984                 return -EOPNOTSUPP;
8985
8986         /* Find the HW bridge for the PF VSI */
8987         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8988                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8989                         veb = pf->veb[i];
8990         }
8991
8992         if (!veb)
8993                 return 0;
8994
8995         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8996                                        nlflags, 0, 0, filter_mask, NULL);
8997 }
8998
8999 /* Hardware supports L4 tunnel length of 128B (=2^7) which includes
9000  * inner mac plus all inner ethertypes.
9001  */
9002 #define I40E_MAX_TUNNEL_HDR_LEN 128
9003 /**
9004  * i40e_features_check - Validate encapsulated packet conforms to limits
9005  * @skb: skb buff
9006  * @dev: This physical port's netdev
9007  * @features: Offload features that the stack believes apply
9008  **/
9009 static netdev_features_t i40e_features_check(struct sk_buff *skb,
9010                                              struct net_device *dev,
9011                                              netdev_features_t features)
9012 {
9013         if (skb->encapsulation &&
9014             ((skb_inner_network_header(skb) - skb_transport_header(skb)) >
9015              I40E_MAX_TUNNEL_HDR_LEN))
9016                 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
9017
9018         return features;
9019 }
9020
9021 static const struct net_device_ops i40e_netdev_ops = {
9022         .ndo_open               = i40e_open,
9023         .ndo_stop               = i40e_close,
9024         .ndo_start_xmit         = i40e_lan_xmit_frame,
9025         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
9026         .ndo_set_rx_mode        = i40e_set_rx_mode,
9027         .ndo_validate_addr      = eth_validate_addr,
9028         .ndo_set_mac_address    = i40e_set_mac,
9029         .ndo_change_mtu         = i40e_change_mtu,
9030         .ndo_do_ioctl           = i40e_ioctl,
9031         .ndo_tx_timeout         = i40e_tx_timeout,
9032         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
9033         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
9034 #ifdef CONFIG_NET_POLL_CONTROLLER
9035         .ndo_poll_controller    = i40e_netpoll,
9036 #endif
9037         .ndo_setup_tc           = __i40e_setup_tc,
9038 #ifdef I40E_FCOE
9039         .ndo_fcoe_enable        = i40e_fcoe_enable,
9040         .ndo_fcoe_disable       = i40e_fcoe_disable,
9041 #endif
9042         .ndo_set_features       = i40e_set_features,
9043         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
9044         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
9045         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
9046         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
9047         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
9048         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
9049         .ndo_set_vf_trust       = i40e_ndo_set_vf_trust,
9050         .ndo_udp_tunnel_add     = i40e_udp_tunnel_add,
9051         .ndo_udp_tunnel_del     = i40e_udp_tunnel_del,
9052         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
9053         .ndo_fdb_add            = i40e_ndo_fdb_add,
9054         .ndo_features_check     = i40e_features_check,
9055         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
9056         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
9057 };
9058
9059 /**
9060  * i40e_config_netdev - Setup the netdev flags
9061  * @vsi: the VSI being configured
9062  *
9063  * Returns 0 on success, negative value on failure
9064  **/
9065 static int i40e_config_netdev(struct i40e_vsi *vsi)
9066 {
9067         struct i40e_pf *pf = vsi->back;
9068         struct i40e_hw *hw = &pf->hw;
9069         struct i40e_netdev_priv *np;
9070         struct net_device *netdev;
9071         u8 mac_addr[ETH_ALEN];
9072         int etherdev_size;
9073
9074         etherdev_size = sizeof(struct i40e_netdev_priv);
9075         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
9076         if (!netdev)
9077                 return -ENOMEM;
9078
9079         vsi->netdev = netdev;
9080         np = netdev_priv(netdev);
9081         np->vsi = vsi;
9082
9083         netdev->hw_enc_features |= NETIF_F_SG                   |
9084                                    NETIF_F_IP_CSUM              |
9085                                    NETIF_F_IPV6_CSUM            |
9086                                    NETIF_F_HIGHDMA              |
9087                                    NETIF_F_SOFT_FEATURES        |
9088                                    NETIF_F_TSO                  |
9089                                    NETIF_F_TSO_ECN              |
9090                                    NETIF_F_TSO6                 |
9091                                    NETIF_F_GSO_GRE              |
9092                                    NETIF_F_GSO_GRE_CSUM         |
9093                                    NETIF_F_GSO_IPXIP4           |
9094                                    NETIF_F_GSO_IPXIP6           |
9095                                    NETIF_F_GSO_UDP_TUNNEL       |
9096                                    NETIF_F_GSO_UDP_TUNNEL_CSUM  |
9097                                    NETIF_F_GSO_PARTIAL          |
9098                                    NETIF_F_SCTP_CRC             |
9099                                    NETIF_F_RXHASH               |
9100                                    NETIF_F_RXCSUM               |
9101                                    0;
9102
9103         if (!(pf->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE))
9104                 netdev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
9105
9106         netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
9107
9108         /* record features VLANs can make use of */
9109         netdev->vlan_features |= netdev->hw_enc_features |
9110                                  NETIF_F_TSO_MANGLEID;
9111
9112         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
9113                 netdev->hw_features |= NETIF_F_NTUPLE;
9114
9115         netdev->hw_features |= netdev->hw_enc_features  |
9116                                NETIF_F_HW_VLAN_CTAG_TX  |
9117                                NETIF_F_HW_VLAN_CTAG_RX;
9118
9119         netdev->features |= netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
9120         netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
9121
9122         if (vsi->type == I40E_VSI_MAIN) {
9123                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
9124                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
9125                 /* The following steps are necessary to prevent reception
9126                  * of tagged packets - some older NVM configurations load a
9127                  * default a MAC-VLAN filter that accepts any tagged packet
9128                  * which must be replaced by a normal filter.
9129                  */
9130                 i40e_rm_default_mac_filter(vsi, mac_addr);
9131                 spin_lock_bh(&vsi->mac_filter_list_lock);
9132                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, true);
9133                 spin_unlock_bh(&vsi->mac_filter_list_lock);
9134         } else {
9135                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
9136                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
9137                          pf->vsi[pf->lan_vsi]->netdev->name);
9138                 random_ether_addr(mac_addr);
9139
9140                 spin_lock_bh(&vsi->mac_filter_list_lock);
9141                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
9142                 spin_unlock_bh(&vsi->mac_filter_list_lock);
9143         }
9144
9145         ether_addr_copy(netdev->dev_addr, mac_addr);
9146         ether_addr_copy(netdev->perm_addr, mac_addr);
9147
9148         netdev->priv_flags |= IFF_UNICAST_FLT;
9149         netdev->priv_flags |= IFF_SUPP_NOFCS;
9150         /* Setup netdev TC information */
9151         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
9152
9153         netdev->netdev_ops = &i40e_netdev_ops;
9154         netdev->watchdog_timeo = 5 * HZ;
9155         i40e_set_ethtool_ops(netdev);
9156 #ifdef I40E_FCOE
9157         i40e_fcoe_config_netdev(netdev, vsi);
9158 #endif
9159
9160         return 0;
9161 }
9162
9163 /**
9164  * i40e_vsi_delete - Delete a VSI from the switch
9165  * @vsi: the VSI being removed
9166  *
9167  * Returns 0 on success, negative value on failure
9168  **/
9169 static void i40e_vsi_delete(struct i40e_vsi *vsi)
9170 {
9171         /* remove default VSI is not allowed */
9172         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
9173                 return;
9174
9175         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
9176 }
9177
9178 /**
9179  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
9180  * @vsi: the VSI being queried
9181  *
9182  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
9183  **/
9184 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
9185 {
9186         struct i40e_veb *veb;
9187         struct i40e_pf *pf = vsi->back;
9188
9189         /* Uplink is not a bridge so default to VEB */
9190         if (vsi->veb_idx == I40E_NO_VEB)
9191                 return 1;
9192
9193         veb = pf->veb[vsi->veb_idx];
9194         if (!veb) {
9195                 dev_info(&pf->pdev->dev,
9196                          "There is no veb associated with the bridge\n");
9197                 return -ENOENT;
9198         }
9199
9200         /* Uplink is a bridge in VEPA mode */
9201         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
9202                 return 0;
9203         } else {
9204                 /* Uplink is a bridge in VEB mode */
9205                 return 1;
9206         }
9207
9208         /* VEPA is now default bridge, so return 0 */
9209         return 0;
9210 }
9211
9212 /**
9213  * i40e_add_vsi - Add a VSI to the switch
9214  * @vsi: the VSI being configured
9215  *
9216  * This initializes a VSI context depending on the VSI type to be added and
9217  * passes it down to the add_vsi aq command.
9218  **/
9219 static int i40e_add_vsi(struct i40e_vsi *vsi)
9220 {
9221         int ret = -ENODEV;
9222         i40e_status aq_ret = 0;
9223         struct i40e_pf *pf = vsi->back;
9224         struct i40e_hw *hw = &pf->hw;
9225         struct i40e_vsi_context ctxt;
9226         struct i40e_mac_filter *f, *ftmp;
9227
9228         u8 enabled_tc = 0x1; /* TC0 enabled */
9229         int f_count = 0;
9230
9231         memset(&ctxt, 0, sizeof(ctxt));
9232         switch (vsi->type) {
9233         case I40E_VSI_MAIN:
9234                 /* The PF's main VSI is already setup as part of the
9235                  * device initialization, so we'll not bother with
9236                  * the add_vsi call, but we will retrieve the current
9237                  * VSI context.
9238                  */
9239                 ctxt.seid = pf->main_vsi_seid;
9240                 ctxt.pf_num = pf->hw.pf_id;
9241                 ctxt.vf_num = 0;
9242                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
9243                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9244                 if (ret) {
9245                         dev_info(&pf->pdev->dev,
9246                                  "couldn't get PF vsi config, err %s aq_err %s\n",
9247                                  i40e_stat_str(&pf->hw, ret),
9248                                  i40e_aq_str(&pf->hw,
9249                                              pf->hw.aq.asq_last_status));
9250                         return -ENOENT;
9251                 }
9252                 vsi->info = ctxt.info;
9253                 vsi->info.valid_sections = 0;
9254
9255                 vsi->seid = ctxt.seid;
9256                 vsi->id = ctxt.vsi_number;
9257
9258                 enabled_tc = i40e_pf_get_tc_map(pf);
9259
9260                 /* MFP mode setup queue map and update VSI */
9261                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
9262                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
9263                         memset(&ctxt, 0, sizeof(ctxt));
9264                         ctxt.seid = pf->main_vsi_seid;
9265                         ctxt.pf_num = pf->hw.pf_id;
9266                         ctxt.vf_num = 0;
9267                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
9268                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
9269                         if (ret) {
9270                                 dev_info(&pf->pdev->dev,
9271                                          "update vsi failed, err %s aq_err %s\n",
9272                                          i40e_stat_str(&pf->hw, ret),
9273                                          i40e_aq_str(&pf->hw,
9274                                                     pf->hw.aq.asq_last_status));
9275                                 ret = -ENOENT;
9276                                 goto err;
9277                         }
9278                         /* update the local VSI info queue map */
9279                         i40e_vsi_update_queue_map(vsi, &ctxt);
9280                         vsi->info.valid_sections = 0;
9281                 } else {
9282                         /* Default/Main VSI is only enabled for TC0
9283                          * reconfigure it to enable all TCs that are
9284                          * available on the port in SFP mode.
9285                          * For MFP case the iSCSI PF would use this
9286                          * flow to enable LAN+iSCSI TC.
9287                          */
9288                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
9289                         if (ret) {
9290                                 dev_info(&pf->pdev->dev,
9291                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
9292                                          enabled_tc,
9293                                          i40e_stat_str(&pf->hw, ret),
9294                                          i40e_aq_str(&pf->hw,
9295                                                     pf->hw.aq.asq_last_status));
9296                                 ret = -ENOENT;
9297                         }
9298                 }
9299                 break;
9300
9301         case I40E_VSI_FDIR:
9302                 ctxt.pf_num = hw->pf_id;
9303                 ctxt.vf_num = 0;
9304                 ctxt.uplink_seid = vsi->uplink_seid;
9305                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9306                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9307                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
9308                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
9309                         ctxt.info.valid_sections |=
9310                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9311                         ctxt.info.switch_id =
9312                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9313                 }
9314                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9315                 break;
9316
9317         case I40E_VSI_VMDQ2:
9318                 ctxt.pf_num = hw->pf_id;
9319                 ctxt.vf_num = 0;
9320                 ctxt.uplink_seid = vsi->uplink_seid;
9321                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9322                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
9323
9324                 /* This VSI is connected to VEB so the switch_id
9325                  * should be set to zero by default.
9326                  */
9327                 if (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
9334                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9335                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9336                 break;
9337
9338         case I40E_VSI_SRIOV:
9339                 ctxt.pf_num = hw->pf_id;
9340                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
9341                 ctxt.uplink_seid = vsi->uplink_seid;
9342                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9343                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
9344
9345                 /* This VSI is connected to VEB so the switch_id
9346                  * should be set to zero by default.
9347                  */
9348                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9349                         ctxt.info.valid_sections |=
9350                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9351                         ctxt.info.switch_id =
9352                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9353                 }
9354
9355                 if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
9356                         ctxt.info.valid_sections |=
9357                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
9358                         ctxt.info.queueing_opt_flags |=
9359                                 (I40E_AQ_VSI_QUE_OPT_TCP_ENA |
9360                                  I40E_AQ_VSI_QUE_OPT_RSS_LUT_VSI);
9361                 }
9362
9363                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
9364                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
9365                 if (pf->vf[vsi->vf_id].spoofchk) {
9366                         ctxt.info.valid_sections |=
9367                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
9368                         ctxt.info.sec_flags |=
9369                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
9370                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
9371                 }
9372                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9373                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9374                 break;
9375
9376 #ifdef I40E_FCOE
9377         case I40E_VSI_FCOE:
9378                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
9379                 if (ret) {
9380                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
9381                         return ret;
9382                 }
9383                 break;
9384
9385 #endif /* I40E_FCOE */
9386         case I40E_VSI_IWARP:
9387                 /* send down message to iWARP */
9388                 break;
9389
9390         default:
9391                 return -ENODEV;
9392         }
9393
9394         if (vsi->type != I40E_VSI_MAIN) {
9395                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
9396                 if (ret) {
9397                         dev_info(&vsi->back->pdev->dev,
9398                                  "add vsi failed, err %s aq_err %s\n",
9399                                  i40e_stat_str(&pf->hw, ret),
9400                                  i40e_aq_str(&pf->hw,
9401                                              pf->hw.aq.asq_last_status));
9402                         ret = -ENOENT;
9403                         goto err;
9404                 }
9405                 vsi->info = ctxt.info;
9406                 vsi->info.valid_sections = 0;
9407                 vsi->seid = ctxt.seid;
9408                 vsi->id = ctxt.vsi_number;
9409         }
9410         /* Except FDIR VSI, for all othet VSI set the broadcast filter */
9411         if (vsi->type != I40E_VSI_FDIR) {
9412                 aq_ret = i40e_aq_set_vsi_broadcast(hw, vsi->seid, true, NULL);
9413                 if (aq_ret) {
9414                         ret = i40e_aq_rc_to_posix(aq_ret,
9415                                                   hw->aq.asq_last_status);
9416                         dev_info(&pf->pdev->dev,
9417                                  "set brdcast promisc failed, err %s, aq_err %s\n",
9418                                  i40e_stat_str(hw, aq_ret),
9419                                  i40e_aq_str(hw, hw->aq.asq_last_status));
9420                 }
9421         }
9422
9423         vsi->active_filters = 0;
9424         clear_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
9425         spin_lock_bh(&vsi->mac_filter_list_lock);
9426         /* If macvlan filters already exist, force them to get loaded */
9427         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
9428                 f->state = I40E_FILTER_NEW;
9429                 f_count++;
9430         }
9431         spin_unlock_bh(&vsi->mac_filter_list_lock);
9432
9433         if (f_count) {
9434                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
9435                 pf->flags |= I40E_FLAG_FILTER_SYNC;
9436         }
9437
9438         /* Update VSI BW information */
9439         ret = i40e_vsi_get_bw_info(vsi);
9440         if (ret) {
9441                 dev_info(&pf->pdev->dev,
9442                          "couldn't get vsi bw info, err %s aq_err %s\n",
9443                          i40e_stat_str(&pf->hw, ret),
9444                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9445                 /* VSI is already added so not tearing that up */
9446                 ret = 0;
9447         }
9448
9449 err:
9450         return ret;
9451 }
9452
9453 /**
9454  * i40e_vsi_release - Delete a VSI and free its resources
9455  * @vsi: the VSI being removed
9456  *
9457  * Returns 0 on success or < 0 on error
9458  **/
9459 int i40e_vsi_release(struct i40e_vsi *vsi)
9460 {
9461         struct i40e_mac_filter *f, *ftmp;
9462         struct i40e_veb *veb = NULL;
9463         struct i40e_pf *pf;
9464         u16 uplink_seid;
9465         int i, n;
9466
9467         pf = vsi->back;
9468
9469         /* release of a VEB-owner or last VSI is not allowed */
9470         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
9471                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
9472                          vsi->seid, vsi->uplink_seid);
9473                 return -ENODEV;
9474         }
9475         if (vsi == pf->vsi[pf->lan_vsi] &&
9476             !test_bit(__I40E_DOWN, &pf->state)) {
9477                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
9478                 return -ENODEV;
9479         }
9480
9481         uplink_seid = vsi->uplink_seid;
9482         if (vsi->type != I40E_VSI_SRIOV) {
9483                 if (vsi->netdev_registered) {
9484                         vsi->netdev_registered = false;
9485                         if (vsi->netdev) {
9486                                 /* results in a call to i40e_close() */
9487                                 unregister_netdev(vsi->netdev);
9488                         }
9489                 } else {
9490                         i40e_vsi_close(vsi);
9491                 }
9492                 i40e_vsi_disable_irq(vsi);
9493         }
9494
9495         spin_lock_bh(&vsi->mac_filter_list_lock);
9496         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
9497                 i40e_del_filter(vsi, f->macaddr, f->vlan,
9498                                 f->is_vf, f->is_netdev);
9499         spin_unlock_bh(&vsi->mac_filter_list_lock);
9500
9501         i40e_sync_vsi_filters(vsi);
9502
9503         i40e_vsi_delete(vsi);
9504         i40e_vsi_free_q_vectors(vsi);
9505         if (vsi->netdev) {
9506                 free_netdev(vsi->netdev);
9507                 vsi->netdev = NULL;
9508         }
9509         i40e_vsi_clear_rings(vsi);
9510         i40e_vsi_clear(vsi);
9511
9512         /* If this was the last thing on the VEB, except for the
9513          * controlling VSI, remove the VEB, which puts the controlling
9514          * VSI onto the next level down in the switch.
9515          *
9516          * Well, okay, there's one more exception here: don't remove
9517          * the orphan VEBs yet.  We'll wait for an explicit remove request
9518          * from up the network stack.
9519          */
9520         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
9521                 if (pf->vsi[i] &&
9522                     pf->vsi[i]->uplink_seid == uplink_seid &&
9523                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9524                         n++;      /* count the VSIs */
9525                 }
9526         }
9527         for (i = 0; i < I40E_MAX_VEB; i++) {
9528                 if (!pf->veb[i])
9529                         continue;
9530                 if (pf->veb[i]->uplink_seid == uplink_seid)
9531                         n++;     /* count the VEBs */
9532                 if (pf->veb[i]->seid == uplink_seid)
9533                         veb = pf->veb[i];
9534         }
9535         if (n == 0 && veb && veb->uplink_seid != 0)
9536                 i40e_veb_release(veb);
9537
9538         return 0;
9539 }
9540
9541 /**
9542  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
9543  * @vsi: ptr to the VSI
9544  *
9545  * This should only be called after i40e_vsi_mem_alloc() which allocates the
9546  * corresponding SW VSI structure and initializes num_queue_pairs for the
9547  * newly allocated VSI.
9548  *
9549  * Returns 0 on success or negative on failure
9550  **/
9551 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
9552 {
9553         int ret = -ENOENT;
9554         struct i40e_pf *pf = vsi->back;
9555
9556         if (vsi->q_vectors[0]) {
9557                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
9558                          vsi->seid);
9559                 return -EEXIST;
9560         }
9561
9562         if (vsi->base_vector) {
9563                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
9564                          vsi->seid, vsi->base_vector);
9565                 return -EEXIST;
9566         }
9567
9568         ret = i40e_vsi_alloc_q_vectors(vsi);
9569         if (ret) {
9570                 dev_info(&pf->pdev->dev,
9571                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
9572                          vsi->num_q_vectors, vsi->seid, ret);
9573                 vsi->num_q_vectors = 0;
9574                 goto vector_setup_out;
9575         }
9576
9577         /* In Legacy mode, we do not have to get any other vector since we
9578          * piggyback on the misc/ICR0 for queue interrupts.
9579         */
9580         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
9581                 return ret;
9582         if (vsi->num_q_vectors)
9583                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
9584                                                  vsi->num_q_vectors, vsi->idx);
9585         if (vsi->base_vector < 0) {
9586                 dev_info(&pf->pdev->dev,
9587                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
9588                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
9589                 i40e_vsi_free_q_vectors(vsi);
9590                 ret = -ENOENT;
9591                 goto vector_setup_out;
9592         }
9593
9594 vector_setup_out:
9595         return ret;
9596 }
9597
9598 /**
9599  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
9600  * @vsi: pointer to the vsi.
9601  *
9602  * This re-allocates a vsi's queue resources.
9603  *
9604  * Returns pointer to the successfully allocated and configured VSI sw struct
9605  * on success, otherwise returns NULL on failure.
9606  **/
9607 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
9608 {
9609         struct i40e_pf *pf;
9610         u8 enabled_tc;
9611         int ret;
9612
9613         if (!vsi)
9614                 return NULL;
9615
9616         pf = vsi->back;
9617
9618         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
9619         i40e_vsi_clear_rings(vsi);
9620
9621         i40e_vsi_free_arrays(vsi, false);
9622         i40e_set_num_rings_in_vsi(vsi);
9623         ret = i40e_vsi_alloc_arrays(vsi, false);
9624         if (ret)
9625                 goto err_vsi;
9626
9627         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
9628         if (ret < 0) {
9629                 dev_info(&pf->pdev->dev,
9630                          "failed to get tracking for %d queues for VSI %d err %d\n",
9631                          vsi->alloc_queue_pairs, vsi->seid, ret);
9632                 goto err_vsi;
9633         }
9634         vsi->base_queue = ret;
9635
9636         /* Update the FW view of the VSI. Force a reset of TC and queue
9637          * layout configurations.
9638          */
9639         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9640         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9641         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9642         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9643         if (vsi->type == I40E_VSI_MAIN)
9644                 i40e_rm_default_mac_filter(vsi, pf->hw.mac.perm_addr);
9645
9646         /* assign it some queues */
9647         ret = i40e_alloc_rings(vsi);
9648         if (ret)
9649                 goto err_rings;
9650
9651         /* map all of the rings to the q_vectors */
9652         i40e_vsi_map_rings_to_vectors(vsi);
9653         return vsi;
9654
9655 err_rings:
9656         i40e_vsi_free_q_vectors(vsi);
9657         if (vsi->netdev_registered) {
9658                 vsi->netdev_registered = false;
9659                 unregister_netdev(vsi->netdev);
9660                 free_netdev(vsi->netdev);
9661                 vsi->netdev = NULL;
9662         }
9663         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9664 err_vsi:
9665         i40e_vsi_clear(vsi);
9666         return NULL;
9667 }
9668
9669 /**
9670  * i40e_vsi_setup - Set up a VSI by a given type
9671  * @pf: board private structure
9672  * @type: VSI type
9673  * @uplink_seid: the switch element to link to
9674  * @param1: usage depends upon VSI type. For VF types, indicates VF id
9675  *
9676  * This allocates the sw VSI structure and its queue resources, then add a VSI
9677  * to the identified VEB.
9678  *
9679  * Returns pointer to the successfully allocated and configure VSI sw struct on
9680  * success, otherwise returns NULL on failure.
9681  **/
9682 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9683                                 u16 uplink_seid, u32 param1)
9684 {
9685         struct i40e_vsi *vsi = NULL;
9686         struct i40e_veb *veb = NULL;
9687         int ret, i;
9688         int v_idx;
9689
9690         /* The requested uplink_seid must be either
9691          *     - the PF's port seid
9692          *              no VEB is needed because this is the PF
9693          *              or this is a Flow Director special case VSI
9694          *     - seid of an existing VEB
9695          *     - seid of a VSI that owns an existing VEB
9696          *     - seid of a VSI that doesn't own a VEB
9697          *              a new VEB is created and the VSI becomes the owner
9698          *     - seid of the PF VSI, which is what creates the first VEB
9699          *              this is a special case of the previous
9700          *
9701          * Find which uplink_seid we were given and create a new VEB if needed
9702          */
9703         for (i = 0; i < I40E_MAX_VEB; i++) {
9704                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9705                         veb = pf->veb[i];
9706                         break;
9707                 }
9708         }
9709
9710         if (!veb && uplink_seid != pf->mac_seid) {
9711
9712                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9713                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9714                                 vsi = pf->vsi[i];
9715                                 break;
9716                         }
9717                 }
9718                 if (!vsi) {
9719                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9720                                  uplink_seid);
9721                         return NULL;
9722                 }
9723
9724                 if (vsi->uplink_seid == pf->mac_seid)
9725                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9726                                              vsi->tc_config.enabled_tc);
9727                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9728                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9729                                              vsi->tc_config.enabled_tc);
9730                 if (veb) {
9731                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9732                                 dev_info(&vsi->back->pdev->dev,
9733                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9734                                 return NULL;
9735                         }
9736                         /* We come up by default in VEPA mode if SRIOV is not
9737                          * already enabled, in which case we can't force VEPA
9738                          * mode.
9739                          */
9740                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9741                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9742                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9743                         }
9744                         i40e_config_bridge_mode(veb);
9745                 }
9746                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9747                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9748                                 veb = pf->veb[i];
9749                 }
9750                 if (!veb) {
9751                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9752                         return NULL;
9753                 }
9754
9755                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9756                 uplink_seid = veb->seid;
9757         }
9758
9759         /* get vsi sw struct */
9760         v_idx = i40e_vsi_mem_alloc(pf, type);
9761         if (v_idx < 0)
9762                 goto err_alloc;
9763         vsi = pf->vsi[v_idx];
9764         if (!vsi)
9765                 goto err_alloc;
9766         vsi->type = type;
9767         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9768
9769         if (type == I40E_VSI_MAIN)
9770                 pf->lan_vsi = v_idx;
9771         else if (type == I40E_VSI_SRIOV)
9772                 vsi->vf_id = param1;
9773         /* assign it some queues */
9774         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9775                                 vsi->idx);
9776         if (ret < 0) {
9777                 dev_info(&pf->pdev->dev,
9778                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9779                          vsi->alloc_queue_pairs, vsi->seid, ret);
9780                 goto err_vsi;
9781         }
9782         vsi->base_queue = ret;
9783
9784         /* get a VSI from the hardware */
9785         vsi->uplink_seid = uplink_seid;
9786         ret = i40e_add_vsi(vsi);
9787         if (ret)
9788                 goto err_vsi;
9789
9790         switch (vsi->type) {
9791         /* setup the netdev if needed */
9792         case I40E_VSI_MAIN:
9793                 /* Apply relevant filters if a platform-specific mac
9794                  * address was selected.
9795                  */
9796                 if (!!(pf->flags & I40E_FLAG_PF_MAC)) {
9797                         ret = i40e_macaddr_init(vsi, pf->hw.mac.addr);
9798                         if (ret) {
9799                                 dev_warn(&pf->pdev->dev,
9800                                          "could not set up macaddr; err %d\n",
9801                                          ret);
9802                         }
9803                 }
9804         case I40E_VSI_VMDQ2:
9805         case I40E_VSI_FCOE:
9806                 ret = i40e_config_netdev(vsi);
9807                 if (ret)
9808                         goto err_netdev;
9809                 ret = register_netdev(vsi->netdev);
9810                 if (ret)
9811                         goto err_netdev;
9812                 vsi->netdev_registered = true;
9813                 netif_carrier_off(vsi->netdev);
9814 #ifdef CONFIG_I40E_DCB
9815                 /* Setup DCB netlink interface */
9816                 i40e_dcbnl_setup(vsi);
9817 #endif /* CONFIG_I40E_DCB */
9818                 /* fall through */
9819
9820         case I40E_VSI_FDIR:
9821                 /* set up vectors and rings if needed */
9822                 ret = i40e_vsi_setup_vectors(vsi);
9823                 if (ret)
9824                         goto err_msix;
9825
9826                 ret = i40e_alloc_rings(vsi);
9827                 if (ret)
9828                         goto err_rings;
9829
9830                 /* map all of the rings to the q_vectors */
9831                 i40e_vsi_map_rings_to_vectors(vsi);
9832
9833                 i40e_vsi_reset_stats(vsi);
9834                 break;
9835
9836         default:
9837                 /* no netdev or rings for the other VSI types */
9838                 break;
9839         }
9840
9841         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9842             (vsi->type == I40E_VSI_VMDQ2)) {
9843                 ret = i40e_vsi_config_rss(vsi);
9844         }
9845         return vsi;
9846
9847 err_rings:
9848         i40e_vsi_free_q_vectors(vsi);
9849 err_msix:
9850         if (vsi->netdev_registered) {
9851                 vsi->netdev_registered = false;
9852                 unregister_netdev(vsi->netdev);
9853                 free_netdev(vsi->netdev);
9854                 vsi->netdev = NULL;
9855         }
9856 err_netdev:
9857         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9858 err_vsi:
9859         i40e_vsi_clear(vsi);
9860 err_alloc:
9861         return NULL;
9862 }
9863
9864 /**
9865  * i40e_veb_get_bw_info - Query VEB BW information
9866  * @veb: the veb to query
9867  *
9868  * Query the Tx scheduler BW configuration data for given VEB
9869  **/
9870 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9871 {
9872         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9873         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9874         struct i40e_pf *pf = veb->pf;
9875         struct i40e_hw *hw = &pf->hw;
9876         u32 tc_bw_max;
9877         int ret = 0;
9878         int i;
9879
9880         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9881                                                   &bw_data, NULL);
9882         if (ret) {
9883                 dev_info(&pf->pdev->dev,
9884                          "query veb bw config failed, err %s aq_err %s\n",
9885                          i40e_stat_str(&pf->hw, ret),
9886                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9887                 goto out;
9888         }
9889
9890         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9891                                                    &ets_data, NULL);
9892         if (ret) {
9893                 dev_info(&pf->pdev->dev,
9894                          "query veb bw ets config failed, err %s aq_err %s\n",
9895                          i40e_stat_str(&pf->hw, ret),
9896                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9897                 goto out;
9898         }
9899
9900         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9901         veb->bw_max_quanta = ets_data.tc_bw_max;
9902         veb->is_abs_credits = bw_data.absolute_credits_enable;
9903         veb->enabled_tc = ets_data.tc_valid_bits;
9904         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9905                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9906         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9907                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9908                 veb->bw_tc_limit_credits[i] =
9909                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9910                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9911         }
9912
9913 out:
9914         return ret;
9915 }
9916
9917 /**
9918  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9919  * @pf: board private structure
9920  *
9921  * On error: returns error code (negative)
9922  * On success: returns vsi index in PF (positive)
9923  **/
9924 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9925 {
9926         int ret = -ENOENT;
9927         struct i40e_veb *veb;
9928         int i;
9929
9930         /* Need to protect the allocation of switch elements at the PF level */
9931         mutex_lock(&pf->switch_mutex);
9932
9933         /* VEB list may be fragmented if VEB creation/destruction has
9934          * been happening.  We can afford to do a quick scan to look
9935          * for any free slots in the list.
9936          *
9937          * find next empty veb slot, looping back around if necessary
9938          */
9939         i = 0;
9940         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9941                 i++;
9942         if (i >= I40E_MAX_VEB) {
9943                 ret = -ENOMEM;
9944                 goto err_alloc_veb;  /* out of VEB slots! */
9945         }
9946
9947         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9948         if (!veb) {
9949                 ret = -ENOMEM;
9950                 goto err_alloc_veb;
9951         }
9952         veb->pf = pf;
9953         veb->idx = i;
9954         veb->enabled_tc = 1;
9955
9956         pf->veb[i] = veb;
9957         ret = i;
9958 err_alloc_veb:
9959         mutex_unlock(&pf->switch_mutex);
9960         return ret;
9961 }
9962
9963 /**
9964  * i40e_switch_branch_release - Delete a branch of the switch tree
9965  * @branch: where to start deleting
9966  *
9967  * This uses recursion to find the tips of the branch to be
9968  * removed, deleting until we get back to and can delete this VEB.
9969  **/
9970 static void i40e_switch_branch_release(struct i40e_veb *branch)
9971 {
9972         struct i40e_pf *pf = branch->pf;
9973         u16 branch_seid = branch->seid;
9974         u16 veb_idx = branch->idx;
9975         int i;
9976
9977         /* release any VEBs on this VEB - RECURSION */
9978         for (i = 0; i < I40E_MAX_VEB; i++) {
9979                 if (!pf->veb[i])
9980                         continue;
9981                 if (pf->veb[i]->uplink_seid == branch->seid)
9982                         i40e_switch_branch_release(pf->veb[i]);
9983         }
9984
9985         /* Release the VSIs on this VEB, but not the owner VSI.
9986          *
9987          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
9988          *       the VEB itself, so don't use (*branch) after this loop.
9989          */
9990         for (i = 0; i < pf->num_alloc_vsi; i++) {
9991                 if (!pf->vsi[i])
9992                         continue;
9993                 if (pf->vsi[i]->uplink_seid == branch_seid &&
9994                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9995                         i40e_vsi_release(pf->vsi[i]);
9996                 }
9997         }
9998
9999         /* There's one corner case where the VEB might not have been
10000          * removed, so double check it here and remove it if needed.
10001          * This case happens if the veb was created from the debugfs
10002          * commands and no VSIs were added to it.
10003          */
10004         if (pf->veb[veb_idx])
10005                 i40e_veb_release(pf->veb[veb_idx]);
10006 }
10007
10008 /**
10009  * i40e_veb_clear - remove veb struct
10010  * @veb: the veb to remove
10011  **/
10012 static void i40e_veb_clear(struct i40e_veb *veb)
10013 {
10014         if (!veb)
10015                 return;
10016
10017         if (veb->pf) {
10018                 struct i40e_pf *pf = veb->pf;
10019
10020                 mutex_lock(&pf->switch_mutex);
10021                 if (pf->veb[veb->idx] == veb)
10022                         pf->veb[veb->idx] = NULL;
10023                 mutex_unlock(&pf->switch_mutex);
10024         }
10025
10026         kfree(veb);
10027 }
10028
10029 /**
10030  * i40e_veb_release - Delete a VEB and free its resources
10031  * @veb: the VEB being removed
10032  **/
10033 void i40e_veb_release(struct i40e_veb *veb)
10034 {
10035         struct i40e_vsi *vsi = NULL;
10036         struct i40e_pf *pf;
10037         int i, n = 0;
10038
10039         pf = veb->pf;
10040
10041         /* find the remaining VSI and check for extras */
10042         for (i = 0; i < pf->num_alloc_vsi; i++) {
10043                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
10044                         n++;
10045                         vsi = pf->vsi[i];
10046                 }
10047         }
10048         if (n != 1) {
10049                 dev_info(&pf->pdev->dev,
10050                          "can't remove VEB %d with %d VSIs left\n",
10051                          veb->seid, n);
10052                 return;
10053         }
10054
10055         /* move the remaining VSI to uplink veb */
10056         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
10057         if (veb->uplink_seid) {
10058                 vsi->uplink_seid = veb->uplink_seid;
10059                 if (veb->uplink_seid == pf->mac_seid)
10060                         vsi->veb_idx = I40E_NO_VEB;
10061                 else
10062                         vsi->veb_idx = veb->veb_idx;
10063         } else {
10064                 /* floating VEB */
10065                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
10066                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
10067         }
10068
10069         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10070         i40e_veb_clear(veb);
10071 }
10072
10073 /**
10074  * i40e_add_veb - create the VEB in the switch
10075  * @veb: the VEB to be instantiated
10076  * @vsi: the controlling VSI
10077  **/
10078 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
10079 {
10080         struct i40e_pf *pf = veb->pf;
10081         bool enable_stats = !!(pf->flags & I40E_FLAG_VEB_STATS_ENABLED);
10082         int ret;
10083
10084         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
10085                               veb->enabled_tc, false,
10086                               &veb->seid, enable_stats, NULL);
10087
10088         /* get a VEB from the hardware */
10089         if (ret) {
10090                 dev_info(&pf->pdev->dev,
10091                          "couldn't add VEB, err %s aq_err %s\n",
10092                          i40e_stat_str(&pf->hw, ret),
10093                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10094                 return -EPERM;
10095         }
10096
10097         /* get statistics counter */
10098         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
10099                                          &veb->stats_idx, NULL, NULL, NULL);
10100         if (ret) {
10101                 dev_info(&pf->pdev->dev,
10102                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
10103                          i40e_stat_str(&pf->hw, ret),
10104                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10105                 return -EPERM;
10106         }
10107         ret = i40e_veb_get_bw_info(veb);
10108         if (ret) {
10109                 dev_info(&pf->pdev->dev,
10110                          "couldn't get VEB bw info, 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                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10114                 return -ENOENT;
10115         }
10116
10117         vsi->uplink_seid = veb->seid;
10118         vsi->veb_idx = veb->idx;
10119         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
10120
10121         return 0;
10122 }
10123
10124 /**
10125  * i40e_veb_setup - Set up a VEB
10126  * @pf: board private structure
10127  * @flags: VEB setup flags
10128  * @uplink_seid: the switch element to link to
10129  * @vsi_seid: the initial VSI seid
10130  * @enabled_tc: Enabled TC bit-map
10131  *
10132  * This allocates the sw VEB structure and links it into the switch
10133  * It is possible and legal for this to be a duplicate of an already
10134  * existing VEB.  It is also possible for both uplink and vsi seids
10135  * to be zero, in order to create a floating VEB.
10136  *
10137  * Returns pointer to the successfully allocated VEB sw struct on
10138  * success, otherwise returns NULL on failure.
10139  **/
10140 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
10141                                 u16 uplink_seid, u16 vsi_seid,
10142                                 u8 enabled_tc)
10143 {
10144         struct i40e_veb *veb, *uplink_veb = NULL;
10145         int vsi_idx, veb_idx;
10146         int ret;
10147
10148         /* if one seid is 0, the other must be 0 to create a floating relay */
10149         if ((uplink_seid == 0 || vsi_seid == 0) &&
10150             (uplink_seid + vsi_seid != 0)) {
10151                 dev_info(&pf->pdev->dev,
10152                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
10153                          uplink_seid, vsi_seid);
10154                 return NULL;
10155         }
10156
10157         /* make sure there is such a vsi and uplink */
10158         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
10159                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
10160                         break;
10161         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
10162                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
10163                          vsi_seid);
10164                 return NULL;
10165         }
10166
10167         if (uplink_seid && uplink_seid != pf->mac_seid) {
10168                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
10169                         if (pf->veb[veb_idx] &&
10170                             pf->veb[veb_idx]->seid == uplink_seid) {
10171                                 uplink_veb = pf->veb[veb_idx];
10172                                 break;
10173                         }
10174                 }
10175                 if (!uplink_veb) {
10176                         dev_info(&pf->pdev->dev,
10177                                  "uplink seid %d not found\n", uplink_seid);
10178                         return NULL;
10179                 }
10180         }
10181
10182         /* get veb sw struct */
10183         veb_idx = i40e_veb_mem_alloc(pf);
10184         if (veb_idx < 0)
10185                 goto err_alloc;
10186         veb = pf->veb[veb_idx];
10187         veb->flags = flags;
10188         veb->uplink_seid = uplink_seid;
10189         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
10190         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
10191
10192         /* create the VEB in the switch */
10193         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
10194         if (ret)
10195                 goto err_veb;
10196         if (vsi_idx == pf->lan_vsi)
10197                 pf->lan_veb = veb->idx;
10198
10199         return veb;
10200
10201 err_veb:
10202         i40e_veb_clear(veb);
10203 err_alloc:
10204         return NULL;
10205 }
10206
10207 /**
10208  * i40e_setup_pf_switch_element - set PF vars based on switch type
10209  * @pf: board private structure
10210  * @ele: element we are building info from
10211  * @num_reported: total number of elements
10212  * @printconfig: should we print the contents
10213  *
10214  * helper function to assist in extracting a few useful SEID values.
10215  **/
10216 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
10217                                 struct i40e_aqc_switch_config_element_resp *ele,
10218                                 u16 num_reported, bool printconfig)
10219 {
10220         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
10221         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
10222         u8 element_type = ele->element_type;
10223         u16 seid = le16_to_cpu(ele->seid);
10224
10225         if (printconfig)
10226                 dev_info(&pf->pdev->dev,
10227                          "type=%d seid=%d uplink=%d downlink=%d\n",
10228                          element_type, seid, uplink_seid, downlink_seid);
10229
10230         switch (element_type) {
10231         case I40E_SWITCH_ELEMENT_TYPE_MAC:
10232                 pf->mac_seid = seid;
10233                 break;
10234         case I40E_SWITCH_ELEMENT_TYPE_VEB:
10235                 /* Main VEB? */
10236                 if (uplink_seid != pf->mac_seid)
10237                         break;
10238                 if (pf->lan_veb == I40E_NO_VEB) {
10239                         int v;
10240
10241                         /* find existing or else empty VEB */
10242                         for (v = 0; v < I40E_MAX_VEB; v++) {
10243                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
10244                                         pf->lan_veb = v;
10245                                         break;
10246                                 }
10247                         }
10248                         if (pf->lan_veb == I40E_NO_VEB) {
10249                                 v = i40e_veb_mem_alloc(pf);
10250                                 if (v < 0)
10251                                         break;
10252                                 pf->lan_veb = v;
10253                         }
10254                 }
10255
10256                 pf->veb[pf->lan_veb]->seid = seid;
10257                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
10258                 pf->veb[pf->lan_veb]->pf = pf;
10259                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
10260                 break;
10261         case I40E_SWITCH_ELEMENT_TYPE_VSI:
10262                 if (num_reported != 1)
10263                         break;
10264                 /* This is immediately after a reset so we can assume this is
10265                  * the PF's VSI
10266                  */
10267                 pf->mac_seid = uplink_seid;
10268                 pf->pf_seid = downlink_seid;
10269                 pf->main_vsi_seid = seid;
10270                 if (printconfig)
10271                         dev_info(&pf->pdev->dev,
10272                                  "pf_seid=%d main_vsi_seid=%d\n",
10273                                  pf->pf_seid, pf->main_vsi_seid);
10274                 break;
10275         case I40E_SWITCH_ELEMENT_TYPE_PF:
10276         case I40E_SWITCH_ELEMENT_TYPE_VF:
10277         case I40E_SWITCH_ELEMENT_TYPE_EMP:
10278         case I40E_SWITCH_ELEMENT_TYPE_BMC:
10279         case I40E_SWITCH_ELEMENT_TYPE_PE:
10280         case I40E_SWITCH_ELEMENT_TYPE_PA:
10281                 /* ignore these for now */
10282                 break;
10283         default:
10284                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
10285                          element_type, seid);
10286                 break;
10287         }
10288 }
10289
10290 /**
10291  * i40e_fetch_switch_configuration - Get switch config from firmware
10292  * @pf: board private structure
10293  * @printconfig: should we print the contents
10294  *
10295  * Get the current switch configuration from the device and
10296  * extract a few useful SEID values.
10297  **/
10298 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
10299 {
10300         struct i40e_aqc_get_switch_config_resp *sw_config;
10301         u16 next_seid = 0;
10302         int ret = 0;
10303         u8 *aq_buf;
10304         int i;
10305
10306         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
10307         if (!aq_buf)
10308                 return -ENOMEM;
10309
10310         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
10311         do {
10312                 u16 num_reported, num_total;
10313
10314                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
10315                                                 I40E_AQ_LARGE_BUF,
10316                                                 &next_seid, NULL);
10317                 if (ret) {
10318                         dev_info(&pf->pdev->dev,
10319                                  "get switch config failed err %s aq_err %s\n",
10320                                  i40e_stat_str(&pf->hw, ret),
10321                                  i40e_aq_str(&pf->hw,
10322                                              pf->hw.aq.asq_last_status));
10323                         kfree(aq_buf);
10324                         return -ENOENT;
10325                 }
10326
10327                 num_reported = le16_to_cpu(sw_config->header.num_reported);
10328                 num_total = le16_to_cpu(sw_config->header.num_total);
10329
10330                 if (printconfig)
10331                         dev_info(&pf->pdev->dev,
10332                                  "header: %d reported %d total\n",
10333                                  num_reported, num_total);
10334
10335                 for (i = 0; i < num_reported; i++) {
10336                         struct i40e_aqc_switch_config_element_resp *ele =
10337                                 &sw_config->element[i];
10338
10339                         i40e_setup_pf_switch_element(pf, ele, num_reported,
10340                                                      printconfig);
10341                 }
10342         } while (next_seid != 0);
10343
10344         kfree(aq_buf);
10345         return ret;
10346 }
10347
10348 /**
10349  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
10350  * @pf: board private structure
10351  * @reinit: if the Main VSI needs to re-initialized.
10352  *
10353  * Returns 0 on success, negative value on failure
10354  **/
10355 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
10356 {
10357         u16 flags = 0;
10358         int ret;
10359
10360         /* find out what's out there already */
10361         ret = i40e_fetch_switch_configuration(pf, false);
10362         if (ret) {
10363                 dev_info(&pf->pdev->dev,
10364                          "couldn't fetch switch config, err %s aq_err %s\n",
10365                          i40e_stat_str(&pf->hw, ret),
10366                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10367                 return ret;
10368         }
10369         i40e_pf_reset_stats(pf);
10370
10371         /* set the switch config bit for the whole device to
10372          * support limited promisc or true promisc
10373          * when user requests promisc. The default is limited
10374          * promisc.
10375         */
10376
10377         if ((pf->hw.pf_id == 0) &&
10378             !(pf->flags & I40E_FLAG_TRUE_PROMISC_SUPPORT))
10379                 flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
10380
10381         if (pf->hw.pf_id == 0) {
10382                 u16 valid_flags;
10383
10384                 valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
10385                 ret = i40e_aq_set_switch_config(&pf->hw, flags, valid_flags,
10386                                                 NULL);
10387                 if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) {
10388                         dev_info(&pf->pdev->dev,
10389                                  "couldn't set switch config bits, err %s aq_err %s\n",
10390                                  i40e_stat_str(&pf->hw, ret),
10391                                  i40e_aq_str(&pf->hw,
10392                                              pf->hw.aq.asq_last_status));
10393                         /* not a fatal problem, just keep going */
10394                 }
10395         }
10396
10397         /* first time setup */
10398         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
10399                 struct i40e_vsi *vsi = NULL;
10400                 u16 uplink_seid;
10401
10402                 /* Set up the PF VSI associated with the PF's main VSI
10403                  * that is already in the HW switch
10404                  */
10405                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
10406                         uplink_seid = pf->veb[pf->lan_veb]->seid;
10407                 else
10408                         uplink_seid = pf->mac_seid;
10409                 if (pf->lan_vsi == I40E_NO_VSI)
10410                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
10411                 else if (reinit)
10412                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
10413                 if (!vsi) {
10414                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
10415                         i40e_fdir_teardown(pf);
10416                         return -EAGAIN;
10417                 }
10418         } else {
10419                 /* force a reset of TC and queue layout configurations */
10420                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
10421
10422                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
10423                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
10424                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
10425         }
10426         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
10427
10428         i40e_fdir_sb_setup(pf);
10429
10430         /* Setup static PF queue filter control settings */
10431         ret = i40e_setup_pf_filter_control(pf);
10432         if (ret) {
10433                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
10434                          ret);
10435                 /* Failure here should not stop continuing other steps */
10436         }
10437
10438         /* enable RSS in the HW, even for only one queue, as the stack can use
10439          * the hash
10440          */
10441         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
10442                 i40e_pf_config_rss(pf);
10443
10444         /* fill in link information and enable LSE reporting */
10445         i40e_update_link_info(&pf->hw);
10446         i40e_link_event(pf);
10447
10448         /* Initialize user-specific link properties */
10449         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
10450                                   I40E_AQ_AN_COMPLETED) ? true : false);
10451
10452         i40e_ptp_init(pf);
10453
10454         return ret;
10455 }
10456
10457 /**
10458  * i40e_determine_queue_usage - Work out queue distribution
10459  * @pf: board private structure
10460  **/
10461 static void i40e_determine_queue_usage(struct i40e_pf *pf)
10462 {
10463         int queues_left;
10464
10465         pf->num_lan_qps = 0;
10466 #ifdef I40E_FCOE
10467         pf->num_fcoe_qps = 0;
10468 #endif
10469
10470         /* Find the max queues to be put into basic use.  We'll always be
10471          * using TC0, whether or not DCB is running, and TC0 will get the
10472          * big RSS set.
10473          */
10474         queues_left = pf->hw.func_caps.num_tx_qp;
10475
10476         if ((queues_left == 1) ||
10477             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
10478                 /* one qp for PF, no queues for anything else */
10479                 queues_left = 0;
10480                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10481
10482                 /* make sure all the fancies are disabled */
10483                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10484                                I40E_FLAG_IWARP_ENABLED  |
10485 #ifdef I40E_FCOE
10486                                I40E_FLAG_FCOE_ENABLED   |
10487 #endif
10488                                I40E_FLAG_FD_SB_ENABLED  |
10489                                I40E_FLAG_FD_ATR_ENABLED |
10490                                I40E_FLAG_DCB_CAPABLE    |
10491                                I40E_FLAG_SRIOV_ENABLED  |
10492                                I40E_FLAG_VMDQ_ENABLED);
10493         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
10494                                   I40E_FLAG_FD_SB_ENABLED |
10495                                   I40E_FLAG_FD_ATR_ENABLED |
10496                                   I40E_FLAG_DCB_CAPABLE))) {
10497                 /* one qp for PF */
10498                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10499                 queues_left -= pf->num_lan_qps;
10500
10501                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10502                                I40E_FLAG_IWARP_ENABLED  |
10503 #ifdef I40E_FCOE
10504                                I40E_FLAG_FCOE_ENABLED   |
10505 #endif
10506                                I40E_FLAG_FD_SB_ENABLED  |
10507                                I40E_FLAG_FD_ATR_ENABLED |
10508                                I40E_FLAG_DCB_ENABLED    |
10509                                I40E_FLAG_VMDQ_ENABLED);
10510         } else {
10511                 /* Not enough queues for all TCs */
10512                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
10513                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
10514                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10515                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
10516                 }
10517                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
10518                                         num_online_cpus());
10519                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
10520                                         pf->hw.func_caps.num_tx_qp);
10521
10522                 queues_left -= pf->num_lan_qps;
10523         }
10524
10525 #ifdef I40E_FCOE
10526         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
10527                 if (I40E_DEFAULT_FCOE <= queues_left) {
10528                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
10529                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
10530                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
10531                 } else {
10532                         pf->num_fcoe_qps = 0;
10533                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
10534                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
10535                 }
10536
10537                 queues_left -= pf->num_fcoe_qps;
10538         }
10539
10540 #endif
10541         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10542                 if (queues_left > 1) {
10543                         queues_left -= 1; /* save 1 queue for FD */
10544                 } else {
10545                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
10546                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
10547                 }
10548         }
10549
10550         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10551             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
10552                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
10553                                         (queues_left / pf->num_vf_qps));
10554                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
10555         }
10556
10557         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
10558             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
10559                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
10560                                           (queues_left / pf->num_vmdq_qps));
10561                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
10562         }
10563
10564         pf->queues_left = queues_left;
10565         dev_dbg(&pf->pdev->dev,
10566                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
10567                 pf->hw.func_caps.num_tx_qp,
10568                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
10569                 pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
10570                 pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
10571                 queues_left);
10572 #ifdef I40E_FCOE
10573         dev_dbg(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
10574 #endif
10575 }
10576
10577 /**
10578  * i40e_setup_pf_filter_control - Setup PF static filter control
10579  * @pf: PF to be setup
10580  *
10581  * i40e_setup_pf_filter_control sets up a PF's initial filter control
10582  * settings. If PE/FCoE are enabled then it will also set the per PF
10583  * based filter sizes required for them. It also enables Flow director,
10584  * ethertype and macvlan type filter settings for the pf.
10585  *
10586  * Returns 0 on success, negative on failure
10587  **/
10588 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
10589 {
10590         struct i40e_filter_control_settings *settings = &pf->filter_settings;
10591
10592         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
10593
10594         /* Flow Director is enabled */
10595         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
10596                 settings->enable_fdir = true;
10597
10598         /* Ethtype and MACVLAN filters enabled for PF */
10599         settings->enable_ethtype = true;
10600         settings->enable_macvlan = true;
10601
10602         if (i40e_set_filter_control(&pf->hw, settings))
10603                 return -ENOENT;
10604
10605         return 0;
10606 }
10607
10608 #define INFO_STRING_LEN 255
10609 #define REMAIN(__x) (INFO_STRING_LEN - (__x))
10610 static void i40e_print_features(struct i40e_pf *pf)
10611 {
10612         struct i40e_hw *hw = &pf->hw;
10613         char *buf;
10614         int i;
10615
10616         buf = kmalloc(INFO_STRING_LEN, GFP_KERNEL);
10617         if (!buf)
10618                 return;
10619
10620         i = snprintf(buf, INFO_STRING_LEN, "Features: PF-id[%d]", hw->pf_id);
10621 #ifdef CONFIG_PCI_IOV
10622         i += snprintf(&buf[i], REMAIN(i), " VFs: %d", pf->num_req_vfs);
10623 #endif
10624         i += snprintf(&buf[i], REMAIN(i), " VSIs: %d QP: %d",
10625                       pf->hw.func_caps.num_vsis,
10626                       pf->vsi[pf->lan_vsi]->num_queue_pairs);
10627         if (pf->flags & I40E_FLAG_RSS_ENABLED)
10628                 i += snprintf(&buf[i], REMAIN(i), " RSS");
10629         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
10630                 i += snprintf(&buf[i], REMAIN(i), " FD_ATR");
10631         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10632                 i += snprintf(&buf[i], REMAIN(i), " FD_SB");
10633                 i += snprintf(&buf[i], REMAIN(i), " NTUPLE");
10634         }
10635         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
10636                 i += snprintf(&buf[i], REMAIN(i), " DCB");
10637         i += snprintf(&buf[i], REMAIN(i), " VxLAN");
10638         i += snprintf(&buf[i], REMAIN(i), " Geneve");
10639         if (pf->flags & I40E_FLAG_PTP)
10640                 i += snprintf(&buf[i], REMAIN(i), " PTP");
10641 #ifdef I40E_FCOE
10642         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
10643                 i += snprintf(&buf[i], REMAIN(i), " FCOE");
10644 #endif
10645         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
10646                 i += snprintf(&buf[i], REMAIN(i), " VEB");
10647         else
10648                 i += snprintf(&buf[i], REMAIN(i), " VEPA");
10649
10650         dev_info(&pf->pdev->dev, "%s\n", buf);
10651         kfree(buf);
10652         WARN_ON(i > INFO_STRING_LEN);
10653 }
10654
10655 /**
10656  * i40e_get_platform_mac_addr - get platform-specific MAC address
10657  *
10658  * @pdev: PCI device information struct
10659  * @pf: board private structure
10660  *
10661  * Look up the MAC address in Open Firmware  on systems that support it,
10662  * and use IDPROM on SPARC if no OF address is found. On return, the
10663  * I40E_FLAG_PF_MAC will be wset in pf->flags if a platform-specific value
10664  * has been selected.
10665  **/
10666 static void i40e_get_platform_mac_addr(struct pci_dev *pdev, struct i40e_pf *pf)
10667 {
10668         pf->flags &= ~I40E_FLAG_PF_MAC;
10669         if (!eth_platform_get_mac_address(&pdev->dev, pf->hw.mac.addr))
10670                 pf->flags |= I40E_FLAG_PF_MAC;
10671 }
10672
10673 /**
10674  * i40e_probe - Device initialization routine
10675  * @pdev: PCI device information struct
10676  * @ent: entry in i40e_pci_tbl
10677  *
10678  * i40e_probe initializes a PF identified by a pci_dev structure.
10679  * The OS initialization, configuring of the PF private structure,
10680  * and a hardware reset occur.
10681  *
10682  * Returns 0 on success, negative on failure
10683  **/
10684 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
10685 {
10686         struct i40e_aq_get_phy_abilities_resp abilities;
10687         struct i40e_pf *pf;
10688         struct i40e_hw *hw;
10689         static u16 pfs_found;
10690         u16 wol_nvm_bits;
10691         u16 link_status;
10692         int err;
10693         u32 val;
10694         u32 i;
10695         u8 set_fc_aq_fail;
10696
10697         err = pci_enable_device_mem(pdev);
10698         if (err)
10699                 return err;
10700
10701         /* set up for high or low dma */
10702         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10703         if (err) {
10704                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10705                 if (err) {
10706                         dev_err(&pdev->dev,
10707                                 "DMA configuration failed: 0x%x\n", err);
10708                         goto err_dma;
10709                 }
10710         }
10711
10712         /* set up pci connections */
10713         err = pci_request_mem_regions(pdev, i40e_driver_name);
10714         if (err) {
10715                 dev_info(&pdev->dev,
10716                          "pci_request_selected_regions failed %d\n", err);
10717                 goto err_pci_reg;
10718         }
10719
10720         pci_enable_pcie_error_reporting(pdev);
10721         pci_set_master(pdev);
10722
10723         /* Now that we have a PCI connection, we need to do the
10724          * low level device setup.  This is primarily setting up
10725          * the Admin Queue structures and then querying for the
10726          * device's current profile information.
10727          */
10728         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
10729         if (!pf) {
10730                 err = -ENOMEM;
10731                 goto err_pf_alloc;
10732         }
10733         pf->next_vsi = 0;
10734         pf->pdev = pdev;
10735         set_bit(__I40E_DOWN, &pf->state);
10736
10737         hw = &pf->hw;
10738         hw->back = pf;
10739
10740         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
10741                                 I40E_MAX_CSR_SPACE);
10742
10743         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
10744         if (!hw->hw_addr) {
10745                 err = -EIO;
10746                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
10747                          (unsigned int)pci_resource_start(pdev, 0),
10748                          pf->ioremap_len, err);
10749                 goto err_ioremap;
10750         }
10751         hw->vendor_id = pdev->vendor;
10752         hw->device_id = pdev->device;
10753         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10754         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10755         hw->subsystem_device_id = pdev->subsystem_device;
10756         hw->bus.device = PCI_SLOT(pdev->devfn);
10757         hw->bus.func = PCI_FUNC(pdev->devfn);
10758         pf->instance = pfs_found;
10759
10760         /* set up the locks for the AQ, do this only once in probe
10761          * and destroy them only once in remove
10762          */
10763         mutex_init(&hw->aq.asq_mutex);
10764         mutex_init(&hw->aq.arq_mutex);
10765
10766         if (debug != -1) {
10767                 pf->msg_enable = pf->hw.debug_mask;
10768                 pf->msg_enable = debug;
10769         }
10770
10771         /* do a special CORER for clearing PXE mode once at init */
10772         if (hw->revision_id == 0 &&
10773             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10774                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10775                 i40e_flush(hw);
10776                 msleep(200);
10777                 pf->corer_count++;
10778
10779                 i40e_clear_pxe_mode(hw);
10780         }
10781
10782         /* Reset here to make sure all is clean and to define PF 'n' */
10783         i40e_clear_hw(hw);
10784         err = i40e_pf_reset(hw);
10785         if (err) {
10786                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10787                 goto err_pf_reset;
10788         }
10789         pf->pfr_count++;
10790
10791         hw->aq.num_arq_entries = I40E_AQ_LEN;
10792         hw->aq.num_asq_entries = I40E_AQ_LEN;
10793         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10794         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10795         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10796
10797         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10798                  "%s-%s:misc",
10799                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10800
10801         err = i40e_init_shared_code(hw);
10802         if (err) {
10803                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10804                          err);
10805                 goto err_pf_reset;
10806         }
10807
10808         /* set up a default setting for link flow control */
10809         pf->hw.fc.requested_mode = I40E_FC_NONE;
10810
10811         err = i40e_init_adminq(hw);
10812         if (err) {
10813                 if (err == I40E_ERR_FIRMWARE_API_VERSION)
10814                         dev_info(&pdev->dev,
10815                                  "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");
10816                 else
10817                         dev_info(&pdev->dev,
10818                                  "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");
10819
10820                 goto err_pf_reset;
10821         }
10822
10823         /* provide nvm, fw, api versions */
10824         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
10825                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
10826                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
10827                  i40e_nvm_version_str(hw));
10828
10829         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10830             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10831                 dev_info(&pdev->dev,
10832                          "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");
10833         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10834                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10835                 dev_info(&pdev->dev,
10836                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10837
10838         i40e_verify_eeprom(pf);
10839
10840         /* Rev 0 hardware was never productized */
10841         if (hw->revision_id < 1)
10842                 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");
10843
10844         i40e_clear_pxe_mode(hw);
10845         err = i40e_get_capabilities(pf);
10846         if (err)
10847                 goto err_adminq_setup;
10848
10849         err = i40e_sw_init(pf);
10850         if (err) {
10851                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10852                 goto err_sw_init;
10853         }
10854
10855         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10856                                 hw->func_caps.num_rx_qp,
10857                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10858         if (err) {
10859                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10860                 goto err_init_lan_hmc;
10861         }
10862
10863         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10864         if (err) {
10865                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10866                 err = -ENOENT;
10867                 goto err_configure_lan_hmc;
10868         }
10869
10870         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10871          * Ignore error return codes because if it was already disabled via
10872          * hardware settings this will fail
10873          */
10874         if (pf->flags & I40E_FLAG_STOP_FW_LLDP) {
10875                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10876                 i40e_aq_stop_lldp(hw, true, NULL);
10877         }
10878
10879         i40e_get_mac_addr(hw, hw->mac.addr);
10880         /* allow a platform config to override the HW addr */
10881         i40e_get_platform_mac_addr(pdev, pf);
10882         if (!is_valid_ether_addr(hw->mac.addr)) {
10883                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10884                 err = -EIO;
10885                 goto err_mac_addr;
10886         }
10887         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10888         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10889         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10890         if (is_valid_ether_addr(hw->mac.port_addr))
10891                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10892 #ifdef I40E_FCOE
10893         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10894         if (err)
10895                 dev_info(&pdev->dev,
10896                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10897         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10898                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10899                          hw->mac.san_addr);
10900                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10901         }
10902         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10903 #endif /* I40E_FCOE */
10904
10905         pci_set_drvdata(pdev, pf);
10906         pci_save_state(pdev);
10907 #ifdef CONFIG_I40E_DCB
10908         err = i40e_init_pf_dcb(pf);
10909         if (err) {
10910                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10911                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10912                 /* Continue without DCB enabled */
10913         }
10914 #endif /* CONFIG_I40E_DCB */
10915
10916         /* set up periodic task facility */
10917         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10918         pf->service_timer_period = HZ;
10919
10920         INIT_WORK(&pf->service_task, i40e_service_task);
10921         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10922         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10923
10924         /* NVM bit on means WoL disabled for the port */
10925         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
10926         if (BIT (hw->port) & wol_nvm_bits || hw->partition_id != 1)
10927                 pf->wol_en = false;
10928         else
10929                 pf->wol_en = true;
10930         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10931
10932         /* set up the main switch operations */
10933         i40e_determine_queue_usage(pf);
10934         err = i40e_init_interrupt_scheme(pf);
10935         if (err)
10936                 goto err_switch_setup;
10937
10938         /* The number of VSIs reported by the FW is the minimum guaranteed
10939          * to us; HW supports far more and we share the remaining pool with
10940          * the other PFs. We allocate space for more than the guarantee with
10941          * the understanding that we might not get them all later.
10942          */
10943         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10944                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10945         else
10946                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10947
10948         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10949         pf->vsi = kcalloc(pf->num_alloc_vsi, sizeof(struct i40e_vsi *),
10950                           GFP_KERNEL);
10951         if (!pf->vsi) {
10952                 err = -ENOMEM;
10953                 goto err_switch_setup;
10954         }
10955
10956 #ifdef CONFIG_PCI_IOV
10957         /* prep for VF support */
10958         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10959             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10960             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10961                 if (pci_num_vf(pdev))
10962                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
10963         }
10964 #endif
10965         err = i40e_setup_pf_switch(pf, false);
10966         if (err) {
10967                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
10968                 goto err_vsis;
10969         }
10970
10971         /* Make sure flow control is set according to current settings */
10972         err = i40e_set_fc(hw, &set_fc_aq_fail, true);
10973         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
10974                 dev_dbg(&pf->pdev->dev,
10975                         "Set fc with err %s aq_err %s on get_phy_cap\n",
10976                         i40e_stat_str(hw, err),
10977                         i40e_aq_str(hw, hw->aq.asq_last_status));
10978         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
10979                 dev_dbg(&pf->pdev->dev,
10980                         "Set fc with err %s aq_err %s on set_phy_config\n",
10981                         i40e_stat_str(hw, err),
10982                         i40e_aq_str(hw, hw->aq.asq_last_status));
10983         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
10984                 dev_dbg(&pf->pdev->dev,
10985                         "Set fc with err %s aq_err %s on get_link_info\n",
10986                         i40e_stat_str(hw, err),
10987                         i40e_aq_str(hw, hw->aq.asq_last_status));
10988
10989         /* if FDIR VSI was set up, start it now */
10990         for (i = 0; i < pf->num_alloc_vsi; i++) {
10991                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
10992                         i40e_vsi_open(pf->vsi[i]);
10993                         break;
10994                 }
10995         }
10996
10997         /* The driver only wants link up/down and module qualification
10998          * reports from firmware.  Note the negative logic.
10999          */
11000         err = i40e_aq_set_phy_int_mask(&pf->hw,
11001                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
11002                                          I40E_AQ_EVENT_MEDIA_NA |
11003                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
11004         if (err)
11005                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
11006                          i40e_stat_str(&pf->hw, err),
11007                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11008
11009         /* Reconfigure hardware for allowing smaller MSS in the case
11010          * of TSO, so that we avoid the MDD being fired and causing
11011          * a reset in the case of small MSS+TSO.
11012          */
11013         val = rd32(hw, I40E_REG_MSS);
11014         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
11015                 val &= ~I40E_REG_MSS_MIN_MASK;
11016                 val |= I40E_64BYTE_MSS;
11017                 wr32(hw, I40E_REG_MSS, val);
11018         }
11019
11020         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
11021                 msleep(75);
11022                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
11023                 if (err)
11024                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
11025                                  i40e_stat_str(&pf->hw, err),
11026                                  i40e_aq_str(&pf->hw,
11027                                              pf->hw.aq.asq_last_status));
11028         }
11029         /* The main driver is (mostly) up and happy. We need to set this state
11030          * before setting up the misc vector or we get a race and the vector
11031          * ends up disabled forever.
11032          */
11033         clear_bit(__I40E_DOWN, &pf->state);
11034
11035         /* In case of MSIX we are going to setup the misc vector right here
11036          * to handle admin queue events etc. In case of legacy and MSI
11037          * the misc functionality and queue processing is combined in
11038          * the same vector and that gets setup at open.
11039          */
11040         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
11041                 err = i40e_setup_misc_vector(pf);
11042                 if (err) {
11043                         dev_info(&pdev->dev,
11044                                  "setup of misc vector failed: %d\n", err);
11045                         goto err_vsis;
11046                 }
11047         }
11048
11049 #ifdef CONFIG_PCI_IOV
11050         /* prep for VF support */
11051         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
11052             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
11053             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
11054                 /* disable link interrupts for VFs */
11055                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
11056                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
11057                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
11058                 i40e_flush(hw);
11059
11060                 if (pci_num_vf(pdev)) {
11061                         dev_info(&pdev->dev,
11062                                  "Active VFs found, allocating resources.\n");
11063                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
11064                         if (err)
11065                                 dev_info(&pdev->dev,
11066                                          "Error %d allocating resources for existing VFs\n",
11067                                          err);
11068                 }
11069         }
11070 #endif /* CONFIG_PCI_IOV */
11071
11072         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11073                 pf->iwarp_base_vector = i40e_get_lump(pf, pf->irq_pile,
11074                                                       pf->num_iwarp_msix,
11075                                                       I40E_IWARP_IRQ_PILE_ID);
11076                 if (pf->iwarp_base_vector < 0) {
11077                         dev_info(&pdev->dev,
11078                                  "failed to get tracking for %d vectors for IWARP err=%d\n",
11079                                  pf->num_iwarp_msix, pf->iwarp_base_vector);
11080                         pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
11081                 }
11082         }
11083
11084         i40e_dbg_pf_init(pf);
11085
11086         /* tell the firmware that we're starting */
11087         i40e_send_version(pf);
11088
11089         /* since everything's happy, start the service_task timer */
11090         mod_timer(&pf->service_timer,
11091                   round_jiffies(jiffies + pf->service_timer_period));
11092
11093         /* add this PF to client device list and launch a client service task */
11094         err = i40e_lan_add_device(pf);
11095         if (err)
11096                 dev_info(&pdev->dev, "Failed to add PF to client API service list: %d\n",
11097                          err);
11098
11099 #ifdef I40E_FCOE
11100         /* create FCoE interface */
11101         i40e_fcoe_vsi_setup(pf);
11102
11103 #endif
11104 #define PCI_SPEED_SIZE 8
11105 #define PCI_WIDTH_SIZE 8
11106         /* Devices on the IOSF bus do not have this information
11107          * and will report PCI Gen 1 x 1 by default so don't bother
11108          * checking them.
11109          */
11110         if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
11111                 char speed[PCI_SPEED_SIZE] = "Unknown";
11112                 char width[PCI_WIDTH_SIZE] = "Unknown";
11113
11114                 /* Get the negotiated link width and speed from PCI config
11115                  * space
11116                  */
11117                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
11118                                           &link_status);
11119
11120                 i40e_set_pci_config_data(hw, link_status);
11121
11122                 switch (hw->bus.speed) {
11123                 case i40e_bus_speed_8000:
11124                         strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
11125                 case i40e_bus_speed_5000:
11126                         strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
11127                 case i40e_bus_speed_2500:
11128                         strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
11129                 default:
11130                         break;
11131                 }
11132                 switch (hw->bus.width) {
11133                 case i40e_bus_width_pcie_x8:
11134                         strncpy(width, "8", PCI_WIDTH_SIZE); break;
11135                 case i40e_bus_width_pcie_x4:
11136                         strncpy(width, "4", PCI_WIDTH_SIZE); break;
11137                 case i40e_bus_width_pcie_x2:
11138                         strncpy(width, "2", PCI_WIDTH_SIZE); break;
11139                 case i40e_bus_width_pcie_x1:
11140                         strncpy(width, "1", PCI_WIDTH_SIZE); break;
11141                 default:
11142                         break;
11143                 }
11144
11145                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
11146                          speed, width);
11147
11148                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
11149                     hw->bus.speed < i40e_bus_speed_8000) {
11150                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
11151                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
11152                 }
11153         }
11154
11155         /* get the requested speeds from the fw */
11156         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
11157         if (err)
11158                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
11159                         i40e_stat_str(&pf->hw, err),
11160                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11161         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
11162
11163         /* get the supported phy types from the fw */
11164         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
11165         if (err)
11166                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
11167                         i40e_stat_str(&pf->hw, err),
11168                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11169         pf->hw.phy.phy_types = le32_to_cpu(abilities.phy_type);
11170
11171         /* Add a filter to drop all Flow control frames from any VSI from being
11172          * transmitted. By doing so we stop a malicious VF from sending out
11173          * PAUSE or PFC frames and potentially controlling traffic for other
11174          * PF/VF VSIs.
11175          * The FW can still send Flow control frames if enabled.
11176          */
11177         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
11178                                                        pf->main_vsi_seid);
11179
11180         if ((pf->hw.device_id == I40E_DEV_ID_10G_BASE_T) ||
11181             (pf->hw.device_id == I40E_DEV_ID_10G_BASE_T4))
11182                 pf->flags |= I40E_FLAG_HAVE_10GBASET_PHY;
11183
11184         /* print a string summarizing features */
11185         i40e_print_features(pf);
11186
11187         return 0;
11188
11189         /* Unwind what we've done if something failed in the setup */
11190 err_vsis:
11191         set_bit(__I40E_DOWN, &pf->state);
11192         i40e_clear_interrupt_scheme(pf);
11193         kfree(pf->vsi);
11194 err_switch_setup:
11195         i40e_reset_interrupt_capability(pf);
11196         del_timer_sync(&pf->service_timer);
11197 err_mac_addr:
11198 err_configure_lan_hmc:
11199         (void)i40e_shutdown_lan_hmc(hw);
11200 err_init_lan_hmc:
11201         kfree(pf->qp_pile);
11202 err_sw_init:
11203 err_adminq_setup:
11204 err_pf_reset:
11205         iounmap(hw->hw_addr);
11206 err_ioremap:
11207         kfree(pf);
11208 err_pf_alloc:
11209         pci_disable_pcie_error_reporting(pdev);
11210         pci_release_mem_regions(pdev);
11211 err_pci_reg:
11212 err_dma:
11213         pci_disable_device(pdev);
11214         return err;
11215 }
11216
11217 /**
11218  * i40e_remove - Device removal routine
11219  * @pdev: PCI device information struct
11220  *
11221  * i40e_remove is called by the PCI subsystem to alert the driver
11222  * that is should release a PCI device.  This could be caused by a
11223  * Hot-Plug event, or because the driver is going to be removed from
11224  * memory.
11225  **/
11226 static void i40e_remove(struct pci_dev *pdev)
11227 {
11228         struct i40e_pf *pf = pci_get_drvdata(pdev);
11229         struct i40e_hw *hw = &pf->hw;
11230         i40e_status ret_code;
11231         int i;
11232
11233         i40e_dbg_pf_exit(pf);
11234
11235         i40e_ptp_stop(pf);
11236
11237         /* Disable RSS in hw */
11238         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), 0);
11239         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), 0);
11240
11241         /* no more scheduling of any task */
11242         set_bit(__I40E_SUSPENDED, &pf->state);
11243         set_bit(__I40E_DOWN, &pf->state);
11244         if (pf->service_timer.data)
11245                 del_timer_sync(&pf->service_timer);
11246         if (pf->service_task.func)
11247                 cancel_work_sync(&pf->service_task);
11248
11249         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
11250                 i40e_free_vfs(pf);
11251                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
11252         }
11253
11254         i40e_fdir_teardown(pf);
11255
11256         /* If there is a switch structure or any orphans, remove them.
11257          * This will leave only the PF's VSI remaining.
11258          */
11259         for (i = 0; i < I40E_MAX_VEB; i++) {
11260                 if (!pf->veb[i])
11261                         continue;
11262
11263                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
11264                     pf->veb[i]->uplink_seid == 0)
11265                         i40e_switch_branch_release(pf->veb[i]);
11266         }
11267
11268         /* Now we can shutdown the PF's VSI, just before we kill
11269          * adminq and hmc.
11270          */
11271         if (pf->vsi[pf->lan_vsi])
11272                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
11273
11274         /* remove attached clients */
11275         ret_code = i40e_lan_del_device(pf);
11276         if (ret_code) {
11277                 dev_warn(&pdev->dev, "Failed to delete client device: %d\n",
11278                          ret_code);
11279         }
11280
11281         /* shutdown and destroy the HMC */
11282         if (hw->hmc.hmc_obj) {
11283                 ret_code = i40e_shutdown_lan_hmc(hw);
11284                 if (ret_code)
11285                         dev_warn(&pdev->dev,
11286                                  "Failed to destroy the HMC resources: %d\n",
11287                                  ret_code);
11288         }
11289
11290         /* shutdown the adminq */
11291         ret_code = i40e_shutdown_adminq(hw);
11292         if (ret_code)
11293                 dev_warn(&pdev->dev,
11294                          "Failed to destroy the Admin Queue resources: %d\n",
11295                          ret_code);
11296
11297         /* destroy the locks only once, here */
11298         mutex_destroy(&hw->aq.arq_mutex);
11299         mutex_destroy(&hw->aq.asq_mutex);
11300
11301         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
11302         i40e_clear_interrupt_scheme(pf);
11303         for (i = 0; i < pf->num_alloc_vsi; i++) {
11304                 if (pf->vsi[i]) {
11305                         i40e_vsi_clear_rings(pf->vsi[i]);
11306                         i40e_vsi_clear(pf->vsi[i]);
11307                         pf->vsi[i] = NULL;
11308                 }
11309         }
11310
11311         for (i = 0; i < I40E_MAX_VEB; i++) {
11312                 kfree(pf->veb[i]);
11313                 pf->veb[i] = NULL;
11314         }
11315
11316         kfree(pf->qp_pile);
11317         kfree(pf->vsi);
11318
11319         iounmap(hw->hw_addr);
11320         kfree(pf);
11321         pci_release_mem_regions(pdev);
11322
11323         pci_disable_pcie_error_reporting(pdev);
11324         pci_disable_device(pdev);
11325 }
11326
11327 /**
11328  * i40e_pci_error_detected - warning that something funky happened in PCI land
11329  * @pdev: PCI device information struct
11330  *
11331  * Called to warn that something happened and the error handling steps
11332  * are in progress.  Allows the driver to quiesce things, be ready for
11333  * remediation.
11334  **/
11335 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
11336                                                 enum pci_channel_state error)
11337 {
11338         struct i40e_pf *pf = pci_get_drvdata(pdev);
11339
11340         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
11341
11342         /* shutdown all operations */
11343         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
11344                 rtnl_lock();
11345                 i40e_prep_for_reset(pf);
11346                 rtnl_unlock();
11347         }
11348
11349         /* Request a slot reset */
11350         return PCI_ERS_RESULT_NEED_RESET;
11351 }
11352
11353 /**
11354  * i40e_pci_error_slot_reset - a PCI slot reset just happened
11355  * @pdev: PCI device information struct
11356  *
11357  * Called to find if the driver can work with the device now that
11358  * the pci slot has been reset.  If a basic connection seems good
11359  * (registers are readable and have sane content) then return a
11360  * happy little PCI_ERS_RESULT_xxx.
11361  **/
11362 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
11363 {
11364         struct i40e_pf *pf = pci_get_drvdata(pdev);
11365         pci_ers_result_t result;
11366         int err;
11367         u32 reg;
11368
11369         dev_dbg(&pdev->dev, "%s\n", __func__);
11370         if (pci_enable_device_mem(pdev)) {
11371                 dev_info(&pdev->dev,
11372                          "Cannot re-enable PCI device after reset.\n");
11373                 result = PCI_ERS_RESULT_DISCONNECT;
11374         } else {
11375                 pci_set_master(pdev);
11376                 pci_restore_state(pdev);
11377                 pci_save_state(pdev);
11378                 pci_wake_from_d3(pdev, false);
11379
11380                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
11381                 if (reg == 0)
11382                         result = PCI_ERS_RESULT_RECOVERED;
11383                 else
11384                         result = PCI_ERS_RESULT_DISCONNECT;
11385         }
11386
11387         err = pci_cleanup_aer_uncorrect_error_status(pdev);
11388         if (err) {
11389                 dev_info(&pdev->dev,
11390                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
11391                          err);
11392                 /* non-fatal, continue */
11393         }
11394
11395         return result;
11396 }
11397
11398 /**
11399  * i40e_pci_error_resume - restart operations after PCI error recovery
11400  * @pdev: PCI device information struct
11401  *
11402  * Called to allow the driver to bring things back up after PCI error
11403  * and/or reset recovery has finished.
11404  **/
11405 static void i40e_pci_error_resume(struct pci_dev *pdev)
11406 {
11407         struct i40e_pf *pf = pci_get_drvdata(pdev);
11408
11409         dev_dbg(&pdev->dev, "%s\n", __func__);
11410         if (test_bit(__I40E_SUSPENDED, &pf->state))
11411                 return;
11412
11413         rtnl_lock();
11414         i40e_handle_reset_warning(pf);
11415         rtnl_unlock();
11416 }
11417
11418 /**
11419  * i40e_shutdown - PCI callback for shutting down
11420  * @pdev: PCI device information struct
11421  **/
11422 static void i40e_shutdown(struct pci_dev *pdev)
11423 {
11424         struct i40e_pf *pf = pci_get_drvdata(pdev);
11425         struct i40e_hw *hw = &pf->hw;
11426
11427         set_bit(__I40E_SUSPENDED, &pf->state);
11428         set_bit(__I40E_DOWN, &pf->state);
11429         rtnl_lock();
11430         i40e_prep_for_reset(pf);
11431         rtnl_unlock();
11432
11433         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11434         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11435
11436         del_timer_sync(&pf->service_timer);
11437         cancel_work_sync(&pf->service_task);
11438         i40e_fdir_teardown(pf);
11439
11440         rtnl_lock();
11441         i40e_prep_for_reset(pf);
11442         rtnl_unlock();
11443
11444         wr32(hw, I40E_PFPM_APM,
11445              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11446         wr32(hw, I40E_PFPM_WUFC,
11447              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11448
11449         i40e_clear_interrupt_scheme(pf);
11450
11451         if (system_state == SYSTEM_POWER_OFF) {
11452                 pci_wake_from_d3(pdev, pf->wol_en);
11453                 pci_set_power_state(pdev, PCI_D3hot);
11454         }
11455 }
11456
11457 #ifdef CONFIG_PM
11458 /**
11459  * i40e_suspend - PCI callback for moving to D3
11460  * @pdev: PCI device information struct
11461  **/
11462 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
11463 {
11464         struct i40e_pf *pf = pci_get_drvdata(pdev);
11465         struct i40e_hw *hw = &pf->hw;
11466         int retval = 0;
11467
11468         set_bit(__I40E_SUSPENDED, &pf->state);
11469         set_bit(__I40E_DOWN, &pf->state);
11470
11471         rtnl_lock();
11472         i40e_prep_for_reset(pf);
11473         rtnl_unlock();
11474
11475         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11476         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11477
11478         i40e_stop_misc_vector(pf);
11479
11480         retval = pci_save_state(pdev);
11481         if (retval)
11482                 return retval;
11483
11484         pci_wake_from_d3(pdev, pf->wol_en);
11485         pci_set_power_state(pdev, PCI_D3hot);
11486
11487         return retval;
11488 }
11489
11490 /**
11491  * i40e_resume - PCI callback for waking up from D3
11492  * @pdev: PCI device information struct
11493  **/
11494 static int i40e_resume(struct pci_dev *pdev)
11495 {
11496         struct i40e_pf *pf = pci_get_drvdata(pdev);
11497         u32 err;
11498
11499         pci_set_power_state(pdev, PCI_D0);
11500         pci_restore_state(pdev);
11501         /* pci_restore_state() clears dev->state_saves, so
11502          * call pci_save_state() again to restore it.
11503          */
11504         pci_save_state(pdev);
11505
11506         err = pci_enable_device_mem(pdev);
11507         if (err) {
11508                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
11509                 return err;
11510         }
11511         pci_set_master(pdev);
11512
11513         /* no wakeup events while running */
11514         pci_wake_from_d3(pdev, false);
11515
11516         /* handling the reset will rebuild the device state */
11517         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
11518                 clear_bit(__I40E_DOWN, &pf->state);
11519                 rtnl_lock();
11520                 i40e_reset_and_rebuild(pf, false);
11521                 rtnl_unlock();
11522         }
11523
11524         return 0;
11525 }
11526
11527 #endif
11528 static const struct pci_error_handlers i40e_err_handler = {
11529         .error_detected = i40e_pci_error_detected,
11530         .slot_reset = i40e_pci_error_slot_reset,
11531         .resume = i40e_pci_error_resume,
11532 };
11533
11534 static struct pci_driver i40e_driver = {
11535         .name     = i40e_driver_name,
11536         .id_table = i40e_pci_tbl,
11537         .probe    = i40e_probe,
11538         .remove   = i40e_remove,
11539 #ifdef CONFIG_PM
11540         .suspend  = i40e_suspend,
11541         .resume   = i40e_resume,
11542 #endif
11543         .shutdown = i40e_shutdown,
11544         .err_handler = &i40e_err_handler,
11545         .sriov_configure = i40e_pci_sriov_configure,
11546 };
11547
11548 /**
11549  * i40e_init_module - Driver registration routine
11550  *
11551  * i40e_init_module is the first routine called when the driver is
11552  * loaded. All it does is register with the PCI subsystem.
11553  **/
11554 static int __init i40e_init_module(void)
11555 {
11556         pr_info("%s: %s - version %s\n", i40e_driver_name,
11557                 i40e_driver_string, i40e_driver_version_str);
11558         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
11559
11560         /* we will see if single thread per module is enough for now,
11561          * it can't be any worse than using the system workqueue which
11562          * was already single threaded
11563          */
11564         i40e_wq = create_singlethread_workqueue(i40e_driver_name);
11565         if (!i40e_wq) {
11566                 pr_err("%s: Failed to create workqueue\n", i40e_driver_name);
11567                 return -ENOMEM;
11568         }
11569
11570         i40e_dbg_init();
11571         return pci_register_driver(&i40e_driver);
11572 }
11573 module_init(i40e_init_module);
11574
11575 /**
11576  * i40e_exit_module - Driver exit cleanup routine
11577  *
11578  * i40e_exit_module is called just before the driver is removed
11579  * from memory.
11580  **/
11581 static void __exit i40e_exit_module(void)
11582 {
11583         pci_unregister_driver(&i40e_driver);
11584         destroy_workqueue(i40e_wq);
11585         i40e_dbg_exit();
11586 }
11587 module_exit(i40e_exit_module);