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

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2015 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 #ifdef CONFIG_SPARC
  32 #include <asm/idprom.h>
  33 #include <asm/prom.h>
  34 #endif
  35
  36 /* Local includes */
  37 #include "i40e.h"
  38 #include "i40e_diag.h"
  39 #if IS_ENABLED(CONFIG_VXLAN)
  40 #include <net/vxlan.h>
  41 #endif
  42 #if IS_ENABLED(CONFIG_GENEVE)
  43 #include <net/geneve.h>
  44 #endif
  45
  46 const char i40e_driver_name[] = "i40e";
  47 static const char i40e_driver_string[] =
  48                         "Intel(R) Ethernet Connection XL710 Network Driver";
  49
  50 #define DRV_KERN "-k"
  51
  52 #define DRV_VERSION_MAJOR 1
  53 #define DRV_VERSION_MINOR 4
  54 #define DRV_VERSION_BUILD 8
  55 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
  56              __stringify(DRV_VERSION_MINOR) "." \
  57              __stringify(DRV_VERSION_BUILD)    DRV_KERN
  58 const char i40e_driver_version_str[] = DRV_VERSION;
  59 static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
  60
  61 /* a bit of forward declarations */
  62 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  63 static void i40e_handle_reset_warning(struct i40e_pf *pf);
  64 static int i40e_add_vsi(struct i40e_vsi *vsi);
  65 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  66 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
  67 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  68 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  69 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  70 static void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
  71                               u16 rss_table_size, u16 rss_size);
  72 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  73 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  74
  75 /* i40e_pci_tbl - PCI Device ID Table
  76  *
  77  * Last entry must be all 0s
  78  *
  79  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  80  *   Class, Class Mask, private data (not used) }
  81  */
  82 static const struct pci_device_id i40e_pci_tbl[] = {
  83         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  84         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  85         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  86         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  87         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  88         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  89         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  90         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  91         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
  92         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  93         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  94         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  95         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  96         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  97         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
  98         /* required last entry */
  99         {0, }
 100 };
 101 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
 102
 103 #define I40E_MAX_VF_COUNT 128
 104 static int debug = -1;
 105 module_param(debug, int, 0);
 106 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
 107
 108 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
 109 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
 110 MODULE_LICENSE("GPL");
 111 MODULE_VERSION(DRV_VERSION);
 112
 113 /**
 114  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 115  * @hw:   pointer to the HW structure
 116  * @mem:  ptr to mem struct to fill out
 117  * @size: size of memory requested
 118  * @alignment: what to align the allocation to
 119  **/
 120 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 121                             u64 size, u32 alignment)
 122 {
 123         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 124
 125         mem->size = ALIGN(size, alignment);
 126         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 127                                       &mem->pa, GFP_KERNEL);
 128         if (!mem->va)
 129                 return -ENOMEM;
 130
 131         return 0;
 132 }
 133
 134 /**
 135  * i40e_free_dma_mem_d - OS specific memory free for shared code
 136  * @hw:   pointer to the HW structure
 137  * @mem:  ptr to mem struct to free
 138  **/
 139 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 140 {
 141         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 142
 143         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 144         mem->va = NULL;
 145         mem->pa = 0;
 146         mem->size = 0;
 147
 148         return 0;
 149 }
 150
 151 /**
 152  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 153  * @hw:   pointer to the HW structure
 154  * @mem:  ptr to mem struct to fill out
 155  * @size: size of memory requested
 156  **/
 157 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 158                              u32 size)
 159 {
 160         mem->size = size;
 161         mem->va = kzalloc(size, GFP_KERNEL);
 162
 163         if (!mem->va)
 164                 return -ENOMEM;
 165
 166         return 0;
 167 }
 168
 169 /**
 170  * i40e_free_virt_mem_d - OS specific memory free for shared code
 171  * @hw:   pointer to the HW structure
 172  * @mem:  ptr to mem struct to free
 173  **/
 174 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 175 {
 176         /* it's ok to kfree a NULL pointer */
 177         kfree(mem->va);
 178         mem->va = NULL;
 179         mem->size = 0;
 180
 181         return 0;
 182 }
 183
 184 /**
 185  * i40e_get_lump - find a lump of free generic resource
 186  * @pf: board private structure
 187  * @pile: the pile of resource to search
 188  * @needed: the number of items needed
 189  * @id: an owner id to stick on the items assigned
 190  *
 191  * Returns the base item index of the lump, or negative for error
 192  *
 193  * The search_hint trick and lack of advanced fit-finding only work
 194  * because we're highly likely to have all the same size lump requests.
 195  * Linear search time and any fragmentation should be minimal.
 196  **/
 197 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 198                          u16 needed, u16 id)
 199 {
 200         int ret = -ENOMEM;
 201         int i, j;
 202
 203         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 204                 dev_info(&pf->pdev->dev,
 205                          "param err: pile=%p needed=%d id=0x%04x\n",
 206                          pile, needed, id);
 207                 return -EINVAL;
 208         }
 209
 210         /* start the linear search with an imperfect hint */
 211         i = pile->search_hint;
 212         while (i < pile->num_entries) {
 213                 /* skip already allocated entries */
 214                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 215                         i++;
 216                         continue;
 217                 }
 218
 219                 /* do we have enough in this lump? */
 220                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 221                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 222                                 break;
 223                 }
 224
 225                 if (j == needed) {
 226                         /* there was enough, so assign it to the requestor */
 227                         for (j = 0; j < needed; j++)
 228                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 229                         ret = i;
 230                         pile->search_hint = i + j;
 231                         break;
 232                 }
 233
 234                 /* not enough, so skip over it and continue looking */
 235                 i += j;
 236         }
 237
 238         return ret;
 239 }
 240
 241 /**
 242  * i40e_put_lump - return a lump of generic resource
 243  * @pile: the pile of resource to search
 244  * @index: the base item index
 245  * @id: the owner id of the items assigned
 246  *
 247  * Returns the count of items in the lump
 248  **/
 249 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 250 {
 251         int valid_id = (id | I40E_PILE_VALID_BIT);
 252         int count = 0;
 253         int i;
 254
 255         if (!pile || index >= pile->num_entries)
 256                 return -EINVAL;
 257
 258         for (i = index;
 259              i < pile->num_entries && pile->list[i] == valid_id;
 260              i++) {
 261                 pile->list[i] = 0;
 262                 count++;
 263         }
 264
 265         if (count && index < pile->search_hint)
 266                 pile->search_hint = index;
 267
 268         return count;
 269 }
 270
 271 /**
 272  * i40e_find_vsi_from_id - searches for the vsi with the given id
 273  * @pf - the pf structure to search for the vsi
 274  * @id - id of the vsi it is searching for
 275  **/
 276 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 277 {
 278         int i;
 279
 280         for (i = 0; i < pf->num_alloc_vsi; i++)
 281                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 282                         return pf->vsi[i];
 283
 284         return NULL;
 285 }
 286
 287 /**
 288  * i40e_service_event_schedule - Schedule the service task to wake up
 289  * @pf: board private structure
 290  *
 291  * If not already scheduled, this puts the task into the work queue
 292  **/
 293 static void i40e_service_event_schedule(struct i40e_pf *pf)
 294 {
 295         if (!test_bit(__I40E_DOWN, &pf->state) &&
 296             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 297             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 298                 schedule_work(&pf->service_task);
 299 }
 300
 301 /**
 302  * i40e_tx_timeout - Respond to a Tx Hang
 303  * @netdev: network interface device structure
 304  *
 305  * If any port has noticed a Tx timeout, it is likely that the whole
 306  * device is munged, not just the one netdev port, so go for the full
 307  * reset.
 308  **/
 309 #ifdef I40E_FCOE
 310 void i40e_tx_timeout(struct net_device *netdev)
 311 #else
 312 static void i40e_tx_timeout(struct net_device *netdev)
 313 #endif
 314 {
 315         struct i40e_netdev_priv *np = netdev_priv(netdev);
 316         struct i40e_vsi *vsi = np->vsi;
 317         struct i40e_pf *pf = vsi->back;
 318         struct i40e_ring *tx_ring = NULL;
 319         unsigned int i, hung_queue = 0;
 320         u32 head, val;
 321
 322         pf->tx_timeout_count++;
 323
 324         /* find the stopped queue the same way the stack does */
 325         for (i = 0; i < netdev->num_tx_queues; i++) {
 326                 struct netdev_queue *q;
 327                 unsigned long trans_start;
 328
 329                 q = netdev_get_tx_queue(netdev, i);
 330                 trans_start = q->trans_start ? : netdev->trans_start;
 331                 if (netif_xmit_stopped(q) &&
 332                     time_after(jiffies,
 333                                (trans_start + netdev->watchdog_timeo))) {
 334                         hung_queue = i;
 335                         break;
 336                 }
 337         }
 338
 339         if (i == netdev->num_tx_queues) {
 340                 netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
 341         } else {
 342                 /* now that we have an index, find the tx_ring struct */
 343                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 344                         if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
 345                                 if (hung_queue ==
 346                                     vsi->tx_rings[i]->queue_index) {
 347                                         tx_ring = vsi->tx_rings[i];
 348                                         break;
 349                                 }
 350                         }
 351                 }
 352         }
 353
 354         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 355                 pf->tx_timeout_recovery_level = 1;  /* reset after some time */
 356         else if (time_before(jiffies,
 357                       (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
 358                 return;   /* don't do any new action before the next timeout */
 359
 360         if (tx_ring) {
 361                 head = i40e_get_head(tx_ring);
 362                 /* Read interrupt register */
 363                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
 364                         val = rd32(&pf->hw,
 365                              I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
 366                                                 tx_ring->vsi->base_vector - 1));
 367                 else
 368                         val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
 369
 370                 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",
 371                             vsi->seid, hung_queue, tx_ring->next_to_clean,
 372                             head, tx_ring->next_to_use,
 373                             readl(tx_ring->tail), val);
 374         }
 375
 376         pf->tx_timeout_last_recovery = jiffies;
 377         netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
 378                     pf->tx_timeout_recovery_level, hung_queue);
 379
 380         switch (pf->tx_timeout_recovery_level) {
 381         case 1:
 382                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 383                 break;
 384         case 2:
 385                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 386                 break;
 387         case 3:
 388                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 389                 break;
 390         default:
 391                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 392                 break;
 393         }
 394
 395         i40e_service_event_schedule(pf);
 396         pf->tx_timeout_recovery_level++;
 397 }
 398
 399 /**
 400  * i40e_release_rx_desc - Store the new tail and head values
 401  * @rx_ring: ring to bump
 402  * @val: new head index
 403  **/
 404 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 405 {
 406         rx_ring->next_to_use = val;
 407
 408         /* Force memory writes to complete before letting h/w
 409          * know there are new descriptors to fetch.  (Only
 410          * applicable for weak-ordered memory model archs,
 411          * such as IA-64).
 412          */
 413         wmb();
 414         writel(val, rx_ring->tail);
 415 }
 416
 417 /**
 418  * i40e_get_vsi_stats_struct - Get System Network Statistics
 419  * @vsi: the VSI we care about
 420  *
 421  * Returns the address of the device statistics structure.
 422  * The statistics are actually updated from the service task.
 423  **/
 424 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 425 {
 426         return &vsi->net_stats;
 427 }
 428
 429 /**
 430  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 431  * @netdev: network interface device structure
 432  *
 433  * Returns the address of the device statistics structure.
 434  * The statistics are actually updated from the service task.
 435  **/
 436 #ifdef I40E_FCOE
 437 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 438                                              struct net_device *netdev,
 439                                              struct rtnl_link_stats64 *stats)
 440 #else
 441 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 442                                              struct net_device *netdev,
 443                                              struct rtnl_link_stats64 *stats)
 444 #endif
 445 {
 446         struct i40e_netdev_priv *np = netdev_priv(netdev);
 447         struct i40e_ring *tx_ring, *rx_ring;
 448         struct i40e_vsi *vsi = np->vsi;
 449         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 450         int i;
 451
 452         if (test_bit(__I40E_DOWN, &vsi->state))
 453                 return stats;
 454
 455         if (!vsi->tx_rings)
 456                 return stats;
 457
 458         rcu_read_lock();
 459         for (i = 0; i < vsi->num_queue_pairs; i++) {
 460                 u64 bytes, packets;
 461                 unsigned int start;
 462
 463                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 464                 if (!tx_ring)
 465                         continue;
 466
 467                 do {
 468                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 469                         packets = tx_ring->stats.packets;
 470                         bytes   = tx_ring->stats.bytes;
 471                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 472
 473                 stats->tx_packets += packets;
 474                 stats->tx_bytes   += bytes;
 475                 rx_ring = &tx_ring[1];
 476
 477                 do {
 478                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 479                         packets = rx_ring->stats.packets;
 480                         bytes   = rx_ring->stats.bytes;
 481                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 482
 483                 stats->rx_packets += packets;
 484                 stats->rx_bytes   += bytes;
 485         }
 486         rcu_read_unlock();
 487
 488         /* following stats updated by i40e_watchdog_subtask() */
 489         stats->multicast        = vsi_stats->multicast;
 490         stats->tx_errors        = vsi_stats->tx_errors;
 491         stats->tx_dropped       = vsi_stats->tx_dropped;
 492         stats->rx_errors        = vsi_stats->rx_errors;
 493         stats->rx_dropped       = vsi_stats->rx_dropped;
 494         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 495         stats->rx_length_errors = vsi_stats->rx_length_errors;
 496
 497         return stats;
 498 }
 499
 500 /**
 501  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 502  * @vsi: the VSI to have its stats reset
 503  **/
 504 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 505 {
 506         struct rtnl_link_stats64 *ns;
 507         int i;
 508
 509         if (!vsi)
 510                 return;
 511
 512         ns = i40e_get_vsi_stats_struct(vsi);
 513         memset(ns, 0, sizeof(*ns));
 514         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 515         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 516         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 517         if (vsi->rx_rings && vsi->rx_rings[0]) {
 518                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 519                         memset(&vsi->rx_rings[i]->stats, 0,
 520                                sizeof(vsi->rx_rings[i]->stats));
 521                         memset(&vsi->rx_rings[i]->rx_stats, 0,
 522                                sizeof(vsi->rx_rings[i]->rx_stats));
 523                         memset(&vsi->tx_rings[i]->stats, 0,
 524                                sizeof(vsi->tx_rings[i]->stats));
 525                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 526                                sizeof(vsi->tx_rings[i]->tx_stats));
 527                 }
 528         }
 529         vsi->stat_offsets_loaded = false;
 530 }
 531
 532 /**
 533  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 534  * @pf: the PF to be reset
 535  **/
 536 void i40e_pf_reset_stats(struct i40e_pf *pf)
 537 {
 538         int i;
 539
 540         memset(&pf->stats, 0, sizeof(pf->stats));
 541         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 542         pf->stat_offsets_loaded = false;
 543
 544         for (i = 0; i < I40E_MAX_VEB; i++) {
 545                 if (pf->veb[i]) {
 546                         memset(&pf->veb[i]->stats, 0,
 547                                sizeof(pf->veb[i]->stats));
 548                         memset(&pf->veb[i]->stats_offsets, 0,
 549                                sizeof(pf->veb[i]->stats_offsets));
 550                         pf->veb[i]->stat_offsets_loaded = false;
 551                 }
 552         }
 553 }
 554
 555 /**
 556  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 557  * @hw: ptr to the hardware info
 558  * @hireg: the high 32 bit reg to read
 559  * @loreg: the low 32 bit reg to read
 560  * @offset_loaded: has the initial offset been loaded yet
 561  * @offset: ptr to current offset value
 562  * @stat: ptr to the stat
 563  *
 564  * Since the device stats are not reset at PFReset, they likely will not
 565  * be zeroed when the driver starts.  We'll save the first values read
 566  * and use them as offsets to be subtracted from the raw values in order
 567  * to report stats that count from zero.  In the process, we also manage
 568  * the potential roll-over.
 569  **/
 570 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 571                                bool offset_loaded, u64 *offset, u64 *stat)
 572 {
 573         u64 new_data;
 574
 575         if (hw->device_id == I40E_DEV_ID_QEMU) {
 576                 new_data = rd32(hw, loreg);
 577                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 578         } else {
 579                 new_data = rd64(hw, loreg);
 580         }
 581         if (!offset_loaded)
 582                 *offset = new_data;
 583         if (likely(new_data >= *offset))
 584                 *stat = new_data - *offset;
 585         else
 586                 *stat = (new_data + BIT_ULL(48)) - *offset;
 587         *stat &= 0xFFFFFFFFFFFFULL;
 588 }
 589
 590 /**
 591  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 592  * @hw: ptr to the hardware info
 593  * @reg: the hw reg to read
 594  * @offset_loaded: has the initial offset been loaded yet
 595  * @offset: ptr to current offset value
 596  * @stat: ptr to the stat
 597  **/
 598 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 599                                bool offset_loaded, u64 *offset, u64 *stat)
 600 {
 601         u32 new_data;
 602
 603         new_data = rd32(hw, reg);
 604         if (!offset_loaded)
 605                 *offset = new_data;
 606         if (likely(new_data >= *offset))
 607                 *stat = (u32)(new_data - *offset);
 608         else
 609                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 610 }
 611
 612 /**
 613  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 614  * @vsi: the VSI to be updated
 615  **/
 616 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 617 {
 618         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 619         struct i40e_pf *pf = vsi->back;
 620         struct i40e_hw *hw = &pf->hw;
 621         struct i40e_eth_stats *oes;
 622         struct i40e_eth_stats *es;     /* device's eth stats */
 623
 624         es = &vsi->eth_stats;
 625         oes = &vsi->eth_stats_offsets;
 626
 627         /* Gather up the stats that the hw collects */
 628         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 629                            vsi->stat_offsets_loaded,
 630                            &oes->tx_errors, &es->tx_errors);
 631         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 632                            vsi->stat_offsets_loaded,
 633                            &oes->rx_discards, &es->rx_discards);
 634         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 635                            vsi->stat_offsets_loaded,
 636                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 637         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 638                            vsi->stat_offsets_loaded,
 639                            &oes->tx_errors, &es->tx_errors);
 640
 641         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 642                            I40E_GLV_GORCL(stat_idx),
 643                            vsi->stat_offsets_loaded,
 644                            &oes->rx_bytes, &es->rx_bytes);
 645         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 646                            I40E_GLV_UPRCL(stat_idx),
 647                            vsi->stat_offsets_loaded,
 648                            &oes->rx_unicast, &es->rx_unicast);
 649         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 650                            I40E_GLV_MPRCL(stat_idx),
 651                            vsi->stat_offsets_loaded,
 652                            &oes->rx_multicast, &es->rx_multicast);
 653         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 654                            I40E_GLV_BPRCL(stat_idx),
 655                            vsi->stat_offsets_loaded,
 656                            &oes->rx_broadcast, &es->rx_broadcast);
 657
 658         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 659                            I40E_GLV_GOTCL(stat_idx),
 660                            vsi->stat_offsets_loaded,
 661                            &oes->tx_bytes, &es->tx_bytes);
 662         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 663                            I40E_GLV_UPTCL(stat_idx),
 664                            vsi->stat_offsets_loaded,
 665                            &oes->tx_unicast, &es->tx_unicast);
 666         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 667                            I40E_GLV_MPTCL(stat_idx),
 668                            vsi->stat_offsets_loaded,
 669                            &oes->tx_multicast, &es->tx_multicast);
 670         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 671                            I40E_GLV_BPTCL(stat_idx),
 672                            vsi->stat_offsets_loaded,
 673                            &oes->tx_broadcast, &es->tx_broadcast);
 674         vsi->stat_offsets_loaded = true;
 675 }
 676
 677 /**
 678  * i40e_update_veb_stats - Update Switch component statistics
 679  * @veb: the VEB being updated
 680  **/
 681 static void i40e_update_veb_stats(struct i40e_veb *veb)
 682 {
 683         struct i40e_pf *pf = veb->pf;
 684         struct i40e_hw *hw = &pf->hw;
 685         struct i40e_eth_stats *oes;
 686         struct i40e_eth_stats *es;     /* device's eth stats */
 687         struct i40e_veb_tc_stats *veb_oes;
 688         struct i40e_veb_tc_stats *veb_es;
 689         int i, idx = 0;
 690
 691         idx = veb->stats_idx;
 692         es = &veb->stats;
 693         oes = &veb->stats_offsets;
 694         veb_es = &veb->tc_stats;
 695         veb_oes = &veb->tc_stats_offsets;
 696
 697         /* Gather up the stats that the hw collects */
 698         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 699                            veb->stat_offsets_loaded,
 700                            &oes->tx_discards, &es->tx_discards);
 701         if (hw->revision_id > 0)
 702                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 703                                    veb->stat_offsets_loaded,
 704                                    &oes->rx_unknown_protocol,
 705                                    &es->rx_unknown_protocol);
 706         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 707                            veb->stat_offsets_loaded,
 708                            &oes->rx_bytes, &es->rx_bytes);
 709         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 710                            veb->stat_offsets_loaded,
 711                            &oes->rx_unicast, &es->rx_unicast);
 712         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 713                            veb->stat_offsets_loaded,
 714                            &oes->rx_multicast, &es->rx_multicast);
 715         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 716                            veb->stat_offsets_loaded,
 717                            &oes->rx_broadcast, &es->rx_broadcast);
 718
 719         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 720                            veb->stat_offsets_loaded,
 721                            &oes->tx_bytes, &es->tx_bytes);
 722         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 723                            veb->stat_offsets_loaded,
 724                            &oes->tx_unicast, &es->tx_unicast);
 725         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 726                            veb->stat_offsets_loaded,
 727                            &oes->tx_multicast, &es->tx_multicast);
 728         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 729                            veb->stat_offsets_loaded,
 730                            &oes->tx_broadcast, &es->tx_broadcast);
 731         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 732                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 733                                    I40E_GLVEBTC_RPCL(i, idx),
 734                                    veb->stat_offsets_loaded,
 735                                    &veb_oes->tc_rx_packets[i],
 736                                    &veb_es->tc_rx_packets[i]);
 737                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 738                                    I40E_GLVEBTC_RBCL(i, idx),
 739                                    veb->stat_offsets_loaded,
 740                                    &veb_oes->tc_rx_bytes[i],
 741                                    &veb_es->tc_rx_bytes[i]);
 742                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 743                                    I40E_GLVEBTC_TPCL(i, idx),
 744                                    veb->stat_offsets_loaded,
 745                                    &veb_oes->tc_tx_packets[i],
 746                                    &veb_es->tc_tx_packets[i]);
 747                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 748                                    I40E_GLVEBTC_TBCL(i, idx),
 749                                    veb->stat_offsets_loaded,
 750                                    &veb_oes->tc_tx_bytes[i],
 751                                    &veb_es->tc_tx_bytes[i]);
 752         }
 753         veb->stat_offsets_loaded = true;
 754 }
 755
 756 #ifdef I40E_FCOE
 757 /**
 758  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 759  * @vsi: the VSI that is capable of doing FCoE
 760  **/
 761 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 762 {
 763         struct i40e_pf *pf = vsi->back;
 764         struct i40e_hw *hw = &pf->hw;
 765         struct i40e_fcoe_stats *ofs;
 766         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 767         int idx;
 768
 769         if (vsi->type != I40E_VSI_FCOE)
 770                 return;
 771
 772         idx = (pf->pf_seid - I40E_BASE_PF_SEID) + I40E_FCOE_PF_STAT_OFFSET;
 773         fs = &vsi->fcoe_stats;
 774         ofs = &vsi->fcoe_stats_offsets;
 775
 776         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 777                            vsi->fcoe_stat_offsets_loaded,
 778                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 779         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 780                            vsi->fcoe_stat_offsets_loaded,
 781                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 782         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 783                            vsi->fcoe_stat_offsets_loaded,
 784                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 785         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 786                            vsi->fcoe_stat_offsets_loaded,
 787                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 788         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 789                            vsi->fcoe_stat_offsets_loaded,
 790                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 791         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 792                            vsi->fcoe_stat_offsets_loaded,
 793                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 794         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 795                            vsi->fcoe_stat_offsets_loaded,
 796                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 797         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 798                            vsi->fcoe_stat_offsets_loaded,
 799                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 800
 801         vsi->fcoe_stat_offsets_loaded = true;
 802 }
 803
 804 #endif
 805 /**
 806  * i40e_update_vsi_stats - Update the vsi statistics counters.
 807  * @vsi: the VSI to be updated
 808  *
 809  * There are a few instances where we store the same stat in a
 810  * couple of different structs.  This is partly because we have
 811  * the netdev stats that need to be filled out, which is slightly
 812  * different from the "eth_stats" defined by the chip and used in
 813  * VF communications.  We sort it out here.
 814  **/
 815 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 816 {
 817         struct i40e_pf *pf = vsi->back;
 818         struct rtnl_link_stats64 *ons;
 819         struct rtnl_link_stats64 *ns;   /* netdev stats */
 820         struct i40e_eth_stats *oes;
 821         struct i40e_eth_stats *es;     /* device's eth stats */
 822         u32 tx_restart, tx_busy;
 823         struct i40e_ring *p;
 824         u32 rx_page, rx_buf;
 825         u64 bytes, packets;
 826         unsigned int start;
 827         u64 tx_linearize;
 828         u64 tx_force_wb;
 829         u64 rx_p, rx_b;
 830         u64 tx_p, tx_b;
 831         u16 q;
 832
 833         if (test_bit(__I40E_DOWN, &vsi->state) ||
 834             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 835                 return;
 836
 837         ns = i40e_get_vsi_stats_struct(vsi);
 838         ons = &vsi->net_stats_offsets;
 839         es = &vsi->eth_stats;
 840         oes = &vsi->eth_stats_offsets;
 841
 842         /* Gather up the netdev and vsi stats that the driver collects
 843          * on the fly during packet processing
 844          */
 845         rx_b = rx_p = 0;
 846         tx_b = tx_p = 0;
 847         tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
 848         rx_page = 0;
 849         rx_buf = 0;
 850         rcu_read_lock();
 851         for (q = 0; q < vsi->num_queue_pairs; q++) {
 852                 /* locate Tx ring */
 853                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 854
 855                 do {
 856                         start = u64_stats_fetch_begin_irq(&p->syncp);
 857                         packets = p->stats.packets;
 858                         bytes = p->stats.bytes;
 859                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 860                 tx_b += bytes;
 861                 tx_p += packets;
 862                 tx_restart += p->tx_stats.restart_queue;
 863                 tx_busy += p->tx_stats.tx_busy;
 864                 tx_linearize += p->tx_stats.tx_linearize;
 865                 tx_force_wb += p->tx_stats.tx_force_wb;
 866
 867                 /* Rx queue is part of the same block as Tx queue */
 868                 p = &p[1];
 869                 do {
 870                         start = u64_stats_fetch_begin_irq(&p->syncp);
 871                         packets = p->stats.packets;
 872                         bytes = p->stats.bytes;
 873                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 874                 rx_b += bytes;
 875                 rx_p += packets;
 876                 rx_buf += p->rx_stats.alloc_buff_failed;
 877                 rx_page += p->rx_stats.alloc_page_failed;
 878         }
 879         rcu_read_unlock();
 880         vsi->tx_restart = tx_restart;
 881         vsi->tx_busy = tx_busy;
 882         vsi->tx_linearize = tx_linearize;
 883         vsi->tx_force_wb = tx_force_wb;
 884         vsi->rx_page_failed = rx_page;
 885         vsi->rx_buf_failed = rx_buf;
 886
 887         ns->rx_packets = rx_p;
 888         ns->rx_bytes = rx_b;
 889         ns->tx_packets = tx_p;
 890         ns->tx_bytes = tx_b;
 891
 892         /* update netdev stats from eth stats */
 893         i40e_update_eth_stats(vsi);
 894         ons->tx_errors = oes->tx_errors;
 895         ns->tx_errors = es->tx_errors;
 896         ons->multicast = oes->rx_multicast;
 897         ns->multicast = es->rx_multicast;
 898         ons->rx_dropped = oes->rx_discards;
 899         ns->rx_dropped = es->rx_discards;
 900         ons->tx_dropped = oes->tx_discards;
 901         ns->tx_dropped = es->tx_discards;
 902
 903         /* pull in a couple PF stats if this is the main vsi */
 904         if (vsi == pf->vsi[pf->lan_vsi]) {
 905                 ns->rx_crc_errors = pf->stats.crc_errors;
 906                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 907                 ns->rx_length_errors = pf->stats.rx_length_errors;
 908         }
 909 }
 910
 911 /**
 912  * i40e_update_pf_stats - Update the PF statistics counters.
 913  * @pf: the PF to be updated
 914  **/
 915 static void i40e_update_pf_stats(struct i40e_pf *pf)
 916 {
 917         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 918         struct i40e_hw_port_stats *nsd = &pf->stats;
 919         struct i40e_hw *hw = &pf->hw;
 920         u32 val;
 921         int i;
 922
 923         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 924                            I40E_GLPRT_GORCL(hw->port),
 925                            pf->stat_offsets_loaded,
 926                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 927         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 928                            I40E_GLPRT_GOTCL(hw->port),
 929                            pf->stat_offsets_loaded,
 930                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 931         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 932                            pf->stat_offsets_loaded,
 933                            &osd->eth.rx_discards,
 934                            &nsd->eth.rx_discards);
 935         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 936                            I40E_GLPRT_UPRCL(hw->port),
 937                            pf->stat_offsets_loaded,
 938                            &osd->eth.rx_unicast,
 939                            &nsd->eth.rx_unicast);
 940         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 941                            I40E_GLPRT_MPRCL(hw->port),
 942                            pf->stat_offsets_loaded,
 943                            &osd->eth.rx_multicast,
 944                            &nsd->eth.rx_multicast);
 945         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 946                            I40E_GLPRT_BPRCL(hw->port),
 947                            pf->stat_offsets_loaded,
 948                            &osd->eth.rx_broadcast,
 949                            &nsd->eth.rx_broadcast);
 950         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 951                            I40E_GLPRT_UPTCL(hw->port),
 952                            pf->stat_offsets_loaded,
 953                            &osd->eth.tx_unicast,
 954                            &nsd->eth.tx_unicast);
 955         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 956                            I40E_GLPRT_MPTCL(hw->port),
 957                            pf->stat_offsets_loaded,
 958                            &osd->eth.tx_multicast,
 959                            &nsd->eth.tx_multicast);
 960         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 961                            I40E_GLPRT_BPTCL(hw->port),
 962                            pf->stat_offsets_loaded,
 963                            &osd->eth.tx_broadcast,
 964                            &nsd->eth.tx_broadcast);
 965
 966         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 967                            pf->stat_offsets_loaded,
 968                            &osd->tx_dropped_link_down,
 969                            &nsd->tx_dropped_link_down);
 970
 971         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 972                            pf->stat_offsets_loaded,
 973                            &osd->crc_errors, &nsd->crc_errors);
 974
 975         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 976                            pf->stat_offsets_loaded,
 977                            &osd->illegal_bytes, &nsd->illegal_bytes);
 978
 979         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 980                            pf->stat_offsets_loaded,
 981                            &osd->mac_local_faults,
 982                            &nsd->mac_local_faults);
 983         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 984                            pf->stat_offsets_loaded,
 985                            &osd->mac_remote_faults,
 986                            &nsd->mac_remote_faults);
 987
 988         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 989                            pf->stat_offsets_loaded,
 990                            &osd->rx_length_errors,
 991                            &nsd->rx_length_errors);
 992
 993         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 994                            pf->stat_offsets_loaded,
 995                            &osd->link_xon_rx, &nsd->link_xon_rx);
 996         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 997                            pf->stat_offsets_loaded,
 998                            &osd->link_xon_tx, &nsd->link_xon_tx);
 999         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
1000                            pf->stat_offsets_loaded,
1001                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
1002         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
1003                            pf->stat_offsets_loaded,
1004                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
1005
1006         for (i = 0; i < 8; i++) {
1007                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
1008                                    pf->stat_offsets_loaded,
1009                                    &osd->priority_xoff_rx[i],
1010                                    &nsd->priority_xoff_rx[i]);
1011                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
1012                                    pf->stat_offsets_loaded,
1013                                    &osd->priority_xon_rx[i],
1014                                    &nsd->priority_xon_rx[i]);
1015                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1016                                    pf->stat_offsets_loaded,
1017                                    &osd->priority_xon_tx[i],
1018                                    &nsd->priority_xon_tx[i]);
1019                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1020                                    pf->stat_offsets_loaded,
1021                                    &osd->priority_xoff_tx[i],
1022                                    &nsd->priority_xoff_tx[i]);
1023                 i40e_stat_update32(hw,
1024                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1025                                    pf->stat_offsets_loaded,
1026                                    &osd->priority_xon_2_xoff[i],
1027                                    &nsd->priority_xon_2_xoff[i]);
1028         }
1029
1030         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1031                            I40E_GLPRT_PRC64L(hw->port),
1032                            pf->stat_offsets_loaded,
1033                            &osd->rx_size_64, &nsd->rx_size_64);
1034         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1035                            I40E_GLPRT_PRC127L(hw->port),
1036                            pf->stat_offsets_loaded,
1037                            &osd->rx_size_127, &nsd->rx_size_127);
1038         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1039                            I40E_GLPRT_PRC255L(hw->port),
1040                            pf->stat_offsets_loaded,
1041                            &osd->rx_size_255, &nsd->rx_size_255);
1042         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1043                            I40E_GLPRT_PRC511L(hw->port),
1044                            pf->stat_offsets_loaded,
1045                            &osd->rx_size_511, &nsd->rx_size_511);
1046         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1047                            I40E_GLPRT_PRC1023L(hw->port),
1048                            pf->stat_offsets_loaded,
1049                            &osd->rx_size_1023, &nsd->rx_size_1023);
1050         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1051                            I40E_GLPRT_PRC1522L(hw->port),
1052                            pf->stat_offsets_loaded,
1053                            &osd->rx_size_1522, &nsd->rx_size_1522);
1054         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1055                            I40E_GLPRT_PRC9522L(hw->port),
1056                            pf->stat_offsets_loaded,
1057                            &osd->rx_size_big, &nsd->rx_size_big);
1058
1059         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1060                            I40E_GLPRT_PTC64L(hw->port),
1061                            pf->stat_offsets_loaded,
1062                            &osd->tx_size_64, &nsd->tx_size_64);
1063         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1064                            I40E_GLPRT_PTC127L(hw->port),
1065                            pf->stat_offsets_loaded,
1066                            &osd->tx_size_127, &nsd->tx_size_127);
1067         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1068                            I40E_GLPRT_PTC255L(hw->port),
1069                            pf->stat_offsets_loaded,
1070                            &osd->tx_size_255, &nsd->tx_size_255);
1071         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1072                            I40E_GLPRT_PTC511L(hw->port),
1073                            pf->stat_offsets_loaded,
1074                            &osd->tx_size_511, &nsd->tx_size_511);
1075         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1076                            I40E_GLPRT_PTC1023L(hw->port),
1077                            pf->stat_offsets_loaded,
1078                            &osd->tx_size_1023, &nsd->tx_size_1023);
1079         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1080                            I40E_GLPRT_PTC1522L(hw->port),
1081                            pf->stat_offsets_loaded,
1082                            &osd->tx_size_1522, &nsd->tx_size_1522);
1083         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1084                            I40E_GLPRT_PTC9522L(hw->port),
1085                            pf->stat_offsets_loaded,
1086                            &osd->tx_size_big, &nsd->tx_size_big);
1087
1088         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1089                            pf->stat_offsets_loaded,
1090                            &osd->rx_undersize, &nsd->rx_undersize);
1091         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1092                            pf->stat_offsets_loaded,
1093                            &osd->rx_fragments, &nsd->rx_fragments);
1094         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1095                            pf->stat_offsets_loaded,
1096                            &osd->rx_oversize, &nsd->rx_oversize);
1097         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1098                            pf->stat_offsets_loaded,
1099                            &osd->rx_jabber, &nsd->rx_jabber);
1100
1101         /* FDIR stats */
1102         i40e_stat_update32(hw,
1103                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1104                            pf->stat_offsets_loaded,
1105                            &osd->fd_atr_match, &nsd->fd_atr_match);
1106         i40e_stat_update32(hw,
1107                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1108                            pf->stat_offsets_loaded,
1109                            &osd->fd_sb_match, &nsd->fd_sb_match);
1110         i40e_stat_update32(hw,
1111                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1112                       pf->stat_offsets_loaded,
1113                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1114
1115         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1116         nsd->tx_lpi_status =
1117                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1118                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1119         nsd->rx_lpi_status =
1120                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1121                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1122         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1123                            pf->stat_offsets_loaded,
1124                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1125         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1126                            pf->stat_offsets_loaded,
1127                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1128
1129         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1130             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1131                 nsd->fd_sb_status = true;
1132         else
1133                 nsd->fd_sb_status = false;
1134
1135         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1136             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1137                 nsd->fd_atr_status = true;
1138         else
1139                 nsd->fd_atr_status = false;
1140
1141         pf->stat_offsets_loaded = true;
1142 }
1143
1144 /**
1145  * i40e_update_stats - Update the various statistics counters.
1146  * @vsi: the VSI to be updated
1147  *
1148  * Update the various stats for this VSI and its related entities.
1149  **/
1150 void i40e_update_stats(struct i40e_vsi *vsi)
1151 {
1152         struct i40e_pf *pf = vsi->back;
1153
1154         if (vsi == pf->vsi[pf->lan_vsi])
1155                 i40e_update_pf_stats(pf);
1156
1157         i40e_update_vsi_stats(vsi);
1158 #ifdef I40E_FCOE
1159         i40e_update_fcoe_stats(vsi);
1160 #endif
1161 }
1162
1163 /**
1164  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1165  * @vsi: the VSI to be searched
1166  * @macaddr: the MAC address
1167  * @vlan: the vlan
1168  * @is_vf: make sure its a VF filter, else doesn't matter
1169  * @is_netdev: make sure its a netdev filter, else doesn't matter
1170  *
1171  * Returns ptr to the filter object or NULL
1172  **/
1173 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1174                                                 u8 *macaddr, s16 vlan,
1175                                                 bool is_vf, bool is_netdev)
1176 {
1177         struct i40e_mac_filter *f;
1178
1179         if (!vsi || !macaddr)
1180                 return NULL;
1181
1182         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1183                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1184                     (vlan == f->vlan)    &&
1185                     (!is_vf || f->is_vf) &&
1186                     (!is_netdev || f->is_netdev))
1187                         return f;
1188         }
1189         return NULL;
1190 }
1191
1192 /**
1193  * i40e_find_mac - Find a mac addr in the macvlan filters list
1194  * @vsi: the VSI to be searched
1195  * @macaddr: the MAC address we are searching for
1196  * @is_vf: make sure its a VF filter, else doesn't matter
1197  * @is_netdev: make sure its a netdev filter, else doesn't matter
1198  *
1199  * Returns the first filter with the provided MAC address or NULL if
1200  * MAC address was not found
1201  **/
1202 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1203                                       bool is_vf, bool is_netdev)
1204 {
1205         struct i40e_mac_filter *f;
1206
1207         if (!vsi || !macaddr)
1208                 return NULL;
1209
1210         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1211                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1212                     (!is_vf || f->is_vf) &&
1213                     (!is_netdev || f->is_netdev))
1214                         return f;
1215         }
1216         return NULL;
1217 }
1218
1219 /**
1220  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1221  * @vsi: the VSI to be searched
1222  *
1223  * Returns true if VSI is in vlan mode or false otherwise
1224  **/
1225 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1226 {
1227         struct i40e_mac_filter *f;
1228
1229         /* Only -1 for all the filters denotes not in vlan mode
1230          * so we have to go through all the list in order to make sure
1231          */
1232         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1233                 if (f->vlan >= 0 || vsi->info.pvid)
1234                         return true;
1235         }
1236
1237         return false;
1238 }
1239
1240 /**
1241  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1242  * @vsi: the VSI to be searched
1243  * @macaddr: the mac address to be filtered
1244  * @is_vf: true if it is a VF
1245  * @is_netdev: true if it is a netdev
1246  *
1247  * Goes through all the macvlan filters and adds a
1248  * macvlan filter for each unique vlan that already exists
1249  *
1250  * Returns first filter found on success, else NULL
1251  **/
1252 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1253                                              bool is_vf, bool is_netdev)
1254 {
1255         struct i40e_mac_filter *f;
1256
1257         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1258                 if (vsi->info.pvid)
1259                         f->vlan = le16_to_cpu(vsi->info.pvid);
1260                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1261                                       is_vf, is_netdev)) {
1262                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1263                                              is_vf, is_netdev))
1264                                 return NULL;
1265                 }
1266         }
1267
1268         return list_first_entry_or_null(&vsi->mac_filter_list,
1269                                         struct i40e_mac_filter, list);
1270 }
1271
1272 /**
1273  * i40e_del_mac_all_vlan - Remove a MAC filter from all VLANS
1274  * @vsi: the VSI to be searched
1275  * @macaddr: the mac address to be removed
1276  * @is_vf: true if it is a VF
1277  * @is_netdev: true if it is a netdev
1278  *
1279  * Removes a given MAC address from a VSI, regardless of VLAN
1280  *
1281  * Returns 0 for success, or error
1282  **/
1283 int i40e_del_mac_all_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1284                           bool is_vf, bool is_netdev)
1285 {
1286         struct i40e_mac_filter *f = NULL;
1287         int changed = 0;
1288
1289         WARN(!spin_is_locked(&vsi->mac_filter_list_lock),
1290              "Missing mac_filter_list_lock\n");
1291         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1292                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1293                     (is_vf == f->is_vf) &&
1294                     (is_netdev == f->is_netdev)) {
1295                         f->counter--;
1296                         f->changed = true;
1297                         changed = 1;
1298                 }
1299         }
1300         if (changed) {
1301                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1302                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1303                 return 0;
1304         }
1305         return -ENOENT;
1306 }
1307
1308 /**
1309  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1310  * @vsi: the PF Main VSI - inappropriate for any other VSI
1311  * @macaddr: the MAC address
1312  *
1313  * Some older firmware configurations set up a default promiscuous VLAN
1314  * filter that needs to be removed.
1315  **/
1316 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1317 {
1318         struct i40e_aqc_remove_macvlan_element_data element;
1319         struct i40e_pf *pf = vsi->back;
1320         i40e_status ret;
1321
1322         /* Only appropriate for the PF main VSI */
1323         if (vsi->type != I40E_VSI_MAIN)
1324                 return -EINVAL;
1325
1326         memset(&element, 0, sizeof(element));
1327         ether_addr_copy(element.mac_addr, macaddr);
1328         element.vlan_tag = 0;
1329         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1330                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1331         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1332         if (ret)
1333                 return -ENOENT;
1334
1335         return 0;
1336 }
1337
1338 /**
1339  * i40e_add_filter - Add a mac/vlan filter to the VSI
1340  * @vsi: the VSI to be searched
1341  * @macaddr: the MAC address
1342  * @vlan: the vlan
1343  * @is_vf: make sure its a VF filter, else doesn't matter
1344  * @is_netdev: make sure its a netdev filter, else doesn't matter
1345  *
1346  * Returns ptr to the filter object or NULL when no memory available.
1347  *
1348  * NOTE: This function is expected to be called with mac_filter_list_lock
1349  * being held.
1350  **/
1351 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1352                                         u8 *macaddr, s16 vlan,
1353                                         bool is_vf, bool is_netdev)
1354 {
1355         struct i40e_mac_filter *f;
1356
1357         if (!vsi || !macaddr)
1358                 return NULL;
1359
1360         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1361         if (!f) {
1362                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1363                 if (!f)
1364                         goto add_filter_out;
1365
1366                 ether_addr_copy(f->macaddr, macaddr);
1367                 f->vlan = vlan;
1368                 f->changed = true;
1369
1370                 INIT_LIST_HEAD(&f->list);
1371                 list_add(&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         /* changed tells sync_filters_subtask to
1390          * push the filter down to the firmware
1391          */
1392         if (f->changed) {
1393                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1394                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1395         }
1396
1397 add_filter_out:
1398         return f;
1399 }
1400
1401 /**
1402  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1403  * @vsi: the VSI to be searched
1404  * @macaddr: the MAC address
1405  * @vlan: the vlan
1406  * @is_vf: make sure it's a VF filter, else doesn't matter
1407  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1408  *
1409  * NOTE: This function is expected to be called with mac_filter_list_lock
1410  * being held.
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                 f->changed = true;
1451                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1452                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1453         }
1454 }
1455
1456 /**
1457  * i40e_set_mac - NDO callback to set mac address
1458  * @netdev: network interface device structure
1459  * @p: pointer to an address structure
1460  *
1461  * Returns 0 on success, negative on failure
1462  **/
1463 #ifdef I40E_FCOE
1464 int i40e_set_mac(struct net_device *netdev, void *p)
1465 #else
1466 static int i40e_set_mac(struct net_device *netdev, void *p)
1467 #endif
1468 {
1469         struct i40e_netdev_priv *np = netdev_priv(netdev);
1470         struct i40e_vsi *vsi = np->vsi;
1471         struct i40e_pf *pf = vsi->back;
1472         struct i40e_hw *hw = &pf->hw;
1473         struct sockaddr *addr = p;
1474         struct i40e_mac_filter *f;
1475
1476         if (!is_valid_ether_addr(addr->sa_data))
1477                 return -EADDRNOTAVAIL;
1478
1479         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1480                 netdev_info(netdev, "already using mac address %pM\n",
1481                             addr->sa_data);
1482                 return 0;
1483         }
1484
1485         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1486             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1487                 return -EADDRNOTAVAIL;
1488
1489         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1490                 netdev_info(netdev, "returning to hw mac address %pM\n",
1491                             hw->mac.addr);
1492         else
1493                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1494
1495         if (vsi->type == I40E_VSI_MAIN) {
1496                 i40e_status ret;
1497
1498                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1499                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1500                                                 addr->sa_data, NULL);
1501                 if (ret) {
1502                         netdev_info(netdev,
1503                                     "Addr change for Main VSI failed: %d\n",
1504                                     ret);
1505                         return -EADDRNOTAVAIL;
1506                 }
1507         }
1508
1509         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1510                 struct i40e_aqc_remove_macvlan_element_data element;
1511
1512                 memset(&element, 0, sizeof(element));
1513                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1514                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1515                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1516         } else {
1517                 spin_lock_bh(&vsi->mac_filter_list_lock);
1518                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1519                                 false, false);
1520                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1521         }
1522
1523         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1524                 struct i40e_aqc_add_macvlan_element_data element;
1525
1526                 memset(&element, 0, sizeof(element));
1527                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1528                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1529                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1530         } else {
1531                 spin_lock_bh(&vsi->mac_filter_list_lock);
1532                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1533                                     false, false);
1534                 if (f)
1535                         f->is_laa = true;
1536                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1537         }
1538
1539         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1540
1541         return i40e_sync_vsi_filters(vsi);
1542 }
1543
1544 /**
1545  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1546  * @vsi: the VSI being setup
1547  * @ctxt: VSI context structure
1548  * @enabled_tc: Enabled TCs bitmap
1549  * @is_add: True if called before Add VSI
1550  *
1551  * Setup VSI queue mapping for enabled traffic classes.
1552  **/
1553 #ifdef I40E_FCOE
1554 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1555                               struct i40e_vsi_context *ctxt,
1556                               u8 enabled_tc,
1557                               bool is_add)
1558 #else
1559 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1560                                      struct i40e_vsi_context *ctxt,
1561                                      u8 enabled_tc,
1562                                      bool is_add)
1563 #endif
1564 {
1565         struct i40e_pf *pf = vsi->back;
1566         u16 sections = 0;
1567         u8 netdev_tc = 0;
1568         u16 numtc = 0;
1569         u16 qcount;
1570         u8 offset;
1571         u16 qmap;
1572         int i;
1573         u16 num_tc_qps = 0;
1574
1575         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1576         offset = 0;
1577
1578         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1579                 /* Find numtc from enabled TC bitmap */
1580                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1581                         if (enabled_tc & BIT(i)) /* TC is enabled */
1582                                 numtc++;
1583                 }
1584                 if (!numtc) {
1585                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1586                         numtc = 1;
1587                 }
1588         } else {
1589                 /* At least TC0 is enabled in case of non-DCB case */
1590                 numtc = 1;
1591         }
1592
1593         vsi->tc_config.numtc = numtc;
1594         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1595         /* Number of queues per enabled TC */
1596         /* In MFP case we can have a much lower count of MSIx
1597          * vectors available and so we need to lower the used
1598          * q count.
1599          */
1600         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1601                 qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
1602         else
1603                 qcount = vsi->alloc_queue_pairs;
1604         num_tc_qps = qcount / numtc;
1605         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1606
1607         /* Setup queue offset/count for all TCs for given VSI */
1608         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1609                 /* See if the given TC is enabled for the given VSI */
1610                 if (vsi->tc_config.enabled_tc & BIT(i)) {
1611                         /* TC is enabled */
1612                         int pow, num_qps;
1613
1614                         switch (vsi->type) {
1615                         case I40E_VSI_MAIN:
1616                                 qcount = min_t(int, pf->alloc_rss_size,
1617                                                num_tc_qps);
1618                                 break;
1619 #ifdef I40E_FCOE
1620                         case I40E_VSI_FCOE:
1621                                 qcount = num_tc_qps;
1622                                 break;
1623 #endif
1624                         case I40E_VSI_FDIR:
1625                         case I40E_VSI_SRIOV:
1626                         case I40E_VSI_VMDQ2:
1627                         default:
1628                                 qcount = num_tc_qps;
1629                                 WARN_ON(i != 0);
1630                                 break;
1631                         }
1632                         vsi->tc_config.tc_info[i].qoffset = offset;
1633                         vsi->tc_config.tc_info[i].qcount = qcount;
1634
1635                         /* find the next higher power-of-2 of num queue pairs */
1636                         num_qps = qcount;
1637                         pow = 0;
1638                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1639                                 pow++;
1640                                 num_qps >>= 1;
1641                         }
1642
1643                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1644                         qmap =
1645                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1646                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1647
1648                         offset += qcount;
1649                 } else {
1650                         /* TC is not enabled so set the offset to
1651                          * default queue and allocate one queue
1652                          * for the given TC.
1653                          */
1654                         vsi->tc_config.tc_info[i].qoffset = 0;
1655                         vsi->tc_config.tc_info[i].qcount = 1;
1656                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1657
1658                         qmap = 0;
1659                 }
1660                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1661         }
1662
1663         /* Set actual Tx/Rx queue pairs */
1664         vsi->num_queue_pairs = offset;
1665         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1666                 if (vsi->req_queue_pairs > 0)
1667                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1668                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1669                         vsi->num_queue_pairs = pf->num_lan_msix;
1670         }
1671
1672         /* Scheduler section valid can only be set for ADD VSI */
1673         if (is_add) {
1674                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1675
1676                 ctxt->info.up_enable_bits = enabled_tc;
1677         }
1678         if (vsi->type == I40E_VSI_SRIOV) {
1679                 ctxt->info.mapping_flags |=
1680                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1681                 for (i = 0; i < vsi->num_queue_pairs; i++)
1682                         ctxt->info.queue_mapping[i] =
1683                                                cpu_to_le16(vsi->base_queue + i);
1684         } else {
1685                 ctxt->info.mapping_flags |=
1686                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1687                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1688         }
1689         ctxt->info.valid_sections |= cpu_to_le16(sections);
1690 }
1691
1692 /**
1693  * i40e_set_rx_mode - NDO callback to set the netdev filters
1694  * @netdev: network interface device structure
1695  **/
1696 #ifdef I40E_FCOE
1697 void i40e_set_rx_mode(struct net_device *netdev)
1698 #else
1699 static void i40e_set_rx_mode(struct net_device *netdev)
1700 #endif
1701 {
1702         struct i40e_netdev_priv *np = netdev_priv(netdev);
1703         struct i40e_mac_filter *f, *ftmp;
1704         struct i40e_vsi *vsi = np->vsi;
1705         struct netdev_hw_addr *uca;
1706         struct netdev_hw_addr *mca;
1707         struct netdev_hw_addr *ha;
1708
1709         spin_lock_bh(&vsi->mac_filter_list_lock);
1710
1711         /* add addr if not already in the filter list */
1712         netdev_for_each_uc_addr(uca, netdev) {
1713                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1714                         if (i40e_is_vsi_in_vlan(vsi))
1715                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1716                                                      false, true);
1717                         else
1718                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1719                                                 false, true);
1720                 }
1721         }
1722
1723         netdev_for_each_mc_addr(mca, netdev) {
1724                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1725                         if (i40e_is_vsi_in_vlan(vsi))
1726                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1727                                                      false, true);
1728                         else
1729                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1730                                                 false, true);
1731                 }
1732         }
1733
1734         /* remove filter if not in netdev list */
1735         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1736
1737                 if (!f->is_netdev)
1738                         continue;
1739
1740                 netdev_for_each_mc_addr(mca, netdev)
1741                         if (ether_addr_equal(mca->addr, f->macaddr))
1742                                 goto bottom_of_search_loop;
1743
1744                 netdev_for_each_uc_addr(uca, netdev)
1745                         if (ether_addr_equal(uca->addr, f->macaddr))
1746                                 goto bottom_of_search_loop;
1747
1748                 for_each_dev_addr(netdev, ha)
1749                         if (ether_addr_equal(ha->addr, f->macaddr))
1750                                 goto bottom_of_search_loop;
1751
1752                 /* f->macaddr wasn't found in uc, mc, or ha list so delete it */
1753                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1754
1755 bottom_of_search_loop:
1756                 continue;
1757         }
1758         spin_unlock_bh(&vsi->mac_filter_list_lock);
1759
1760         /* check for other flag changes */
1761         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1762                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1763                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1764         }
1765 }
1766
1767 /**
1768  * i40e_mac_filter_entry_clone - Clones a MAC filter entry
1769  * @src: source MAC filter entry to be clones
1770  *
1771  * Returns the pointer to newly cloned MAC filter entry or NULL
1772  * in case of error
1773  **/
1774 static struct i40e_mac_filter *i40e_mac_filter_entry_clone(
1775                                         struct i40e_mac_filter *src)
1776 {
1777         struct i40e_mac_filter *f;
1778
1779         f = kzalloc(sizeof(*f), GFP_ATOMIC);
1780         if (!f)
1781                 return NULL;
1782         *f = *src;
1783
1784         INIT_LIST_HEAD(&f->list);
1785
1786         return f;
1787 }
1788
1789 /**
1790  * i40e_undo_del_filter_entries - Undo the changes made to MAC filter entries
1791  * @vsi: pointer to vsi struct
1792  * @from: Pointer to list which contains MAC filter entries - changes to
1793  *        those entries needs to be undone.
1794  *
1795  * MAC filter entries from list were slated to be removed from device.
1796  **/
1797 static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
1798                                          struct list_head *from)
1799 {
1800         struct i40e_mac_filter *f, *ftmp;
1801
1802         list_for_each_entry_safe(f, ftmp, from, list) {
1803                 f->changed = true;
1804                 /* Move the element back into MAC filter list*/
1805                 list_move_tail(&f->list, &vsi->mac_filter_list);
1806         }
1807 }
1808
1809 /**
1810  * i40e_undo_add_filter_entries - Undo the changes made to MAC filter entries
1811  * @vsi: pointer to vsi struct
1812  *
1813  * MAC filter entries from list were slated to be added from device.
1814  **/
1815 static void i40e_undo_add_filter_entries(struct i40e_vsi *vsi)
1816 {
1817         struct i40e_mac_filter *f, *ftmp;
1818
1819         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1820                 if (!f->changed && f->counter)
1821                         f->changed = true;
1822         }
1823 }
1824
1825 /**
1826  * i40e_cleanup_add_list - Deletes the element from add list and release
1827  *                      memory
1828  * @add_list: Pointer to list which contains MAC filter entries
1829  **/
1830 static void i40e_cleanup_add_list(struct list_head *add_list)
1831 {
1832         struct i40e_mac_filter *f, *ftmp;
1833
1834         list_for_each_entry_safe(f, ftmp, add_list, list) {
1835                 list_del(&f->list);
1836                 kfree(f);
1837         }
1838 }
1839
1840 /**
1841  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1842  * @vsi: ptr to the VSI
1843  *
1844  * Push any outstanding VSI filter changes through the AdminQ.
1845  *
1846  * Returns 0 or error value
1847  **/
1848 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1849 {
1850         struct list_head tmp_del_list, tmp_add_list;
1851         struct i40e_mac_filter *f, *ftmp, *fclone;
1852         bool promisc_forced_on = false;
1853         bool add_happened = false;
1854         int filter_list_len = 0;
1855         u32 changed_flags = 0;
1856         i40e_status aq_ret = 0;
1857         bool err_cond = false;
1858         int retval = 0;
1859         struct i40e_pf *pf;
1860         int num_add = 0;
1861         int num_del = 0;
1862         int aq_err = 0;
1863         u16 cmd_flags;
1864
1865         /* empty array typed pointers, kcalloc later */
1866         struct i40e_aqc_add_macvlan_element_data *add_list;
1867         struct i40e_aqc_remove_macvlan_element_data *del_list;
1868
1869         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1870                 usleep_range(1000, 2000);
1871         pf = vsi->back;
1872
1873         if (vsi->netdev) {
1874                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1875                 vsi->current_netdev_flags = vsi->netdev->flags;
1876         }
1877
1878         INIT_LIST_HEAD(&tmp_del_list);
1879         INIT_LIST_HEAD(&tmp_add_list);
1880
1881         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1882                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1883
1884                 spin_lock_bh(&vsi->mac_filter_list_lock);
1885                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1886                         if (!f->changed)
1887                                 continue;
1888
1889                         if (f->counter != 0)
1890                                 continue;
1891                         f->changed = false;
1892
1893                         /* Move the element into temporary del_list */
1894                         list_move_tail(&f->list, &tmp_del_list);
1895                 }
1896
1897                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1898                         if (!f->changed)
1899                                 continue;
1900
1901                         if (f->counter == 0)
1902                                 continue;
1903                         f->changed = false;
1904
1905                         /* Clone MAC filter entry and add into temporary list */
1906                         fclone = i40e_mac_filter_entry_clone(f);
1907                         if (!fclone) {
1908                                 err_cond = true;
1909                                 break;
1910                         }
1911                         list_add_tail(&fclone->list, &tmp_add_list);
1912                 }
1913
1914                 /* if failed to clone MAC filter entry - undo */
1915                 if (err_cond) {
1916                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1917                         i40e_undo_add_filter_entries(vsi);
1918                 }
1919                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1920
1921                 if (err_cond) {
1922                         i40e_cleanup_add_list(&tmp_add_list);
1923                         retval = -ENOMEM;
1924                         goto out;
1925                 }
1926         }
1927
1928         /* Now process 'del_list' outside the lock */
1929         if (!list_empty(&tmp_del_list)) {
1930                 int del_list_size;
1931
1932                 filter_list_len = pf->hw.aq.asq_buf_size /
1933                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1934                 del_list_size = filter_list_len *
1935                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1936                 del_list = kzalloc(del_list_size, GFP_KERNEL);
1937                 if (!del_list) {
1938                         i40e_cleanup_add_list(&tmp_add_list);
1939
1940                         /* Undo VSI's MAC filter entry element updates */
1941                         spin_lock_bh(&vsi->mac_filter_list_lock);
1942                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1943                         i40e_undo_add_filter_entries(vsi);
1944                         spin_unlock_bh(&vsi->mac_filter_list_lock);
1945                         retval = -ENOMEM;
1946                         goto out;
1947                 }
1948
1949                 list_for_each_entry_safe(f, ftmp, &tmp_del_list, list) {
1950                         cmd_flags = 0;
1951
1952                         /* add to delete list */
1953                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1954                         del_list[num_del].vlan_tag =
1955                                 cpu_to_le16((u16)(f->vlan ==
1956                                             I40E_VLAN_ANY ? 0 : f->vlan));
1957
1958                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1959                         del_list[num_del].flags = cmd_flags;
1960                         num_del++;
1961
1962                         /* flush a full buffer */
1963                         if (num_del == filter_list_len) {
1964                                 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
1965                                                                 vsi->seid,
1966                                                                 del_list,
1967                                                                 num_del,
1968                                                                 NULL);
1969                                 aq_err = pf->hw.aq.asq_last_status;
1970                                 num_del = 0;
1971                                 memset(del_list, 0, del_list_size);
1972
1973                                 if (aq_ret && aq_err != I40E_AQ_RC_ENOENT) {
1974                                         retval = -EIO;
1975                                         dev_err(&pf->pdev->dev,
1976                                                 "ignoring delete macvlan error, err %s, aq_err %s while flushing a full buffer\n",
1977                                                 i40e_stat_str(&pf->hw, aq_ret),
1978                                                 i40e_aq_str(&pf->hw, aq_err));
1979                                 }
1980                         }
1981                         /* Release memory for MAC filter entries which were
1982                          * synced up with HW.
1983                          */
1984                         list_del(&f->list);
1985                         kfree(f);
1986                 }
1987
1988                 if (num_del) {
1989                         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1990                                                         del_list, num_del,
1991                                                         NULL);
1992                         aq_err = pf->hw.aq.asq_last_status;
1993                         num_del = 0;
1994
1995                         if (aq_ret && aq_err != I40E_AQ_RC_ENOENT)
1996                                 dev_info(&pf->pdev->dev,
1997                                          "ignoring delete macvlan error, err %s aq_err %s\n",
1998                                          i40e_stat_str(&pf->hw, aq_ret),
1999                                          i40e_aq_str(&pf->hw, aq_err));
2000                 }
2001
2002                 kfree(del_list);
2003                 del_list = NULL;
2004         }
2005
2006         if (!list_empty(&tmp_add_list)) {
2007                 int add_list_size;
2008
2009                 /* do all the adds now */
2010                 filter_list_len = pf->hw.aq.asq_buf_size /
2011                                sizeof(struct i40e_aqc_add_macvlan_element_data),
2012                 add_list_size = filter_list_len *
2013                                sizeof(struct i40e_aqc_add_macvlan_element_data);
2014                 add_list = kzalloc(add_list_size, GFP_KERNEL);
2015                 if (!add_list) {
2016                         /* Purge element from temporary lists */
2017                         i40e_cleanup_add_list(&tmp_add_list);
2018
2019                         /* Undo add filter entries from VSI MAC filter list */
2020                         spin_lock_bh(&vsi->mac_filter_list_lock);
2021                         i40e_undo_add_filter_entries(vsi);
2022                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2023                         retval = -ENOMEM;
2024                         goto out;
2025                 }
2026
2027                 list_for_each_entry_safe(f, ftmp, &tmp_add_list, list) {
2028
2029                         add_happened = true;
2030                         cmd_flags = 0;
2031
2032                         /* add to add array */
2033                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
2034                         add_list[num_add].vlan_tag =
2035                                 cpu_to_le16(
2036                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
2037                         add_list[num_add].queue_number = 0;
2038
2039                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
2040                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
2041                         num_add++;
2042
2043                         /* flush a full buffer */
2044                         if (num_add == filter_list_len) {
2045                                 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
2046                                                              add_list, num_add,
2047                                                              NULL);
2048                                 aq_err = pf->hw.aq.asq_last_status;
2049                                 num_add = 0;
2050
2051                                 if (aq_ret)
2052                                         break;
2053                                 memset(add_list, 0, add_list_size);
2054                         }
2055                         /* Entries from tmp_add_list were cloned from MAC
2056                          * filter list, hence clean those cloned entries
2057                          */
2058                         list_del(&f->list);
2059                         kfree(f);
2060                 }
2061
2062                 if (num_add) {
2063                         aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
2064                                                      add_list, num_add, NULL);
2065                         aq_err = pf->hw.aq.asq_last_status;
2066                         num_add = 0;
2067                 }
2068                 kfree(add_list);
2069                 add_list = NULL;
2070
2071                 if (add_happened && aq_ret && aq_err != I40E_AQ_RC_EINVAL) {
2072                         retval = i40e_aq_rc_to_posix(aq_ret, aq_err);
2073                         dev_info(&pf->pdev->dev,
2074                                  "add filter failed, err %s aq_err %s\n",
2075                                  i40e_stat_str(&pf->hw, aq_ret),
2076                                  i40e_aq_str(&pf->hw, aq_err));
2077                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
2078                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2079                                       &vsi->state)) {
2080                                 promisc_forced_on = true;
2081                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2082                                         &vsi->state);
2083                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
2084                         }
2085                 }
2086         }
2087
2088         /* check for changes in promiscuous modes */
2089         if (changed_flags & IFF_ALLMULTI) {
2090                 bool cur_multipromisc;
2091
2092                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
2093                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
2094                                                                vsi->seid,
2095                                                                cur_multipromisc,
2096                                                                NULL);
2097                 if (aq_ret) {
2098                         retval = i40e_aq_rc_to_posix(aq_ret,
2099                                                      pf->hw.aq.asq_last_status);
2100                         dev_info(&pf->pdev->dev,
2101                                  "set multi promisc failed, err %s aq_err %s\n",
2102                                  i40e_stat_str(&pf->hw, aq_ret),
2103                                  i40e_aq_str(&pf->hw,
2104                                              pf->hw.aq.asq_last_status));
2105                 }
2106         }
2107         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
2108                 bool cur_promisc;
2109
2110                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
2111                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2112                                         &vsi->state));
2113                 if (vsi->type == I40E_VSI_MAIN && pf->lan_veb != I40E_NO_VEB) {
2114                         /* set defport ON for Main VSI instead of true promisc
2115                          * this way we will get all unicast/multicast and VLAN
2116                          * promisc behavior but will not get VF or VMDq traffic
2117                          * replicated on the Main VSI.
2118                          */
2119                         if (pf->cur_promisc != cur_promisc) {
2120                                 pf->cur_promisc = cur_promisc;
2121                                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
2122                         }
2123                 } else {
2124                         aq_ret = i40e_aq_set_vsi_unicast_promiscuous(
2125                                                           &vsi->back->hw,
2126                                                           vsi->seid,
2127                                                           cur_promisc, NULL);
2128                         if (aq_ret) {
2129                                 retval =
2130                                 i40e_aq_rc_to_posix(aq_ret,
2131                                                     pf->hw.aq.asq_last_status);
2132                                 dev_info(&pf->pdev->dev,
2133                                          "set unicast promisc failed, err %d, aq_err %d\n",
2134                                          aq_ret, pf->hw.aq.asq_last_status);
2135                         }
2136                         aq_ret = i40e_aq_set_vsi_multicast_promiscuous(
2137                                                           &vsi->back->hw,
2138                                                           vsi->seid,
2139                                                           cur_promisc, NULL);
2140                         if (aq_ret) {
2141                                 retval =
2142                                 i40e_aq_rc_to_posix(aq_ret,
2143                                                     pf->hw.aq.asq_last_status);
2144                                 dev_info(&pf->pdev->dev,
2145                                          "set multicast promisc failed, err %d, aq_err %d\n",
2146                                          aq_ret, pf->hw.aq.asq_last_status);
2147                         }
2148                 }
2149                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
2150                                                    vsi->seid,
2151                                                    cur_promisc, NULL);
2152                 if (aq_ret) {
2153                         retval = i40e_aq_rc_to_posix(aq_ret,
2154                                                      pf->hw.aq.asq_last_status);
2155                         dev_info(&pf->pdev->dev,
2156                                  "set brdcast promisc failed, err %s, aq_err %s\n",
2157                                  i40e_stat_str(&pf->hw, aq_ret),
2158                                  i40e_aq_str(&pf->hw,
2159                                              pf->hw.aq.asq_last_status));
2160                 }
2161         }
2162 out:
2163         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2164         return retval;
2165 }
2166
2167 /**
2168  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2169  * @pf: board private structure
2170  **/
2171 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2172 {
2173         int v;
2174
2175         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2176                 return;
2177         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2178
2179         for (v = 0; v < pf->num_alloc_vsi; v++) {
2180                 if (pf->vsi[v] &&
2181                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED)) {
2182                         int ret = i40e_sync_vsi_filters(pf->vsi[v]);
2183
2184                         if (ret) {
2185                                 /* come back and try again later */
2186                                 pf->flags |= I40E_FLAG_FILTER_SYNC;
2187                                 break;
2188                         }
2189                 }
2190         }
2191 }
2192
2193 /**
2194  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2195  * @netdev: network interface device structure
2196  * @new_mtu: new value for maximum frame size
2197  *
2198  * Returns 0 on success, negative on failure
2199  **/
2200 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2201 {
2202         struct i40e_netdev_priv *np = netdev_priv(netdev);
2203         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2204         struct i40e_vsi *vsi = np->vsi;
2205
2206         /* MTU < 68 is an error and causes problems on some kernels */
2207         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2208                 return -EINVAL;
2209
2210         netdev_info(netdev, "changing MTU from %d to %d\n",
2211                     netdev->mtu, new_mtu);
2212         netdev->mtu = new_mtu;
2213         if (netif_running(netdev))
2214                 i40e_vsi_reinit_locked(vsi);
2215
2216         return 0;
2217 }
2218
2219 /**
2220  * i40e_ioctl - Access the hwtstamp interface
2221  * @netdev: network interface device structure
2222  * @ifr: interface request data
2223  * @cmd: ioctl command
2224  **/
2225 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2226 {
2227         struct i40e_netdev_priv *np = netdev_priv(netdev);
2228         struct i40e_pf *pf = np->vsi->back;
2229
2230         switch (cmd) {
2231         case SIOCGHWTSTAMP:
2232                 return i40e_ptp_get_ts_config(pf, ifr);
2233         case SIOCSHWTSTAMP:
2234                 return i40e_ptp_set_ts_config(pf, ifr);
2235         default:
2236                 return -EOPNOTSUPP;
2237         }
2238 }
2239
2240 /**
2241  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2242  * @vsi: the vsi being adjusted
2243  **/
2244 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2245 {
2246         struct i40e_vsi_context ctxt;
2247         i40e_status ret;
2248
2249         if ((vsi->info.valid_sections &
2250              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2251             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2252                 return;  /* already enabled */
2253
2254         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2255         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2256                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2257
2258         ctxt.seid = vsi->seid;
2259         ctxt.info = vsi->info;
2260         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2261         if (ret) {
2262                 dev_info(&vsi->back->pdev->dev,
2263                          "update vlan stripping failed, err %s aq_err %s\n",
2264                          i40e_stat_str(&vsi->back->hw, ret),
2265                          i40e_aq_str(&vsi->back->hw,
2266                                      vsi->back->hw.aq.asq_last_status));
2267         }
2268 }
2269
2270 /**
2271  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2272  * @vsi: the vsi being adjusted
2273  **/
2274 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2275 {
2276         struct i40e_vsi_context ctxt;
2277         i40e_status ret;
2278
2279         if ((vsi->info.valid_sections &
2280              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2281             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2282              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2283                 return;  /* already disabled */
2284
2285         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2286         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2287                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2288
2289         ctxt.seid = vsi->seid;
2290         ctxt.info = vsi->info;
2291         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2292         if (ret) {
2293                 dev_info(&vsi->back->pdev->dev,
2294                          "update vlan stripping failed, err %s aq_err %s\n",
2295                          i40e_stat_str(&vsi->back->hw, ret),
2296                          i40e_aq_str(&vsi->back->hw,
2297                                      vsi->back->hw.aq.asq_last_status));
2298         }
2299 }
2300
2301 /**
2302  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2303  * @netdev: network interface to be adjusted
2304  * @features: netdev features to test if VLAN offload is enabled or not
2305  **/
2306 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2307 {
2308         struct i40e_netdev_priv *np = netdev_priv(netdev);
2309         struct i40e_vsi *vsi = np->vsi;
2310
2311         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2312                 i40e_vlan_stripping_enable(vsi);
2313         else
2314                 i40e_vlan_stripping_disable(vsi);
2315 }
2316
2317 /**
2318  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2319  * @vsi: the vsi being configured
2320  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2321  **/
2322 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2323 {
2324         struct i40e_mac_filter *f, *add_f;
2325         bool is_netdev, is_vf;
2326
2327         is_vf = (vsi->type == I40E_VSI_SRIOV);
2328         is_netdev = !!(vsi->netdev);
2329
2330         /* Locked once because all functions invoked below iterates list*/
2331         spin_lock_bh(&vsi->mac_filter_list_lock);
2332
2333         if (is_netdev) {
2334                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2335                                         is_vf, is_netdev);
2336                 if (!add_f) {
2337                         dev_info(&vsi->back->pdev->dev,
2338                                  "Could not add vlan filter %d for %pM\n",
2339                                  vid, vsi->netdev->dev_addr);
2340                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2341                         return -ENOMEM;
2342                 }
2343         }
2344
2345         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2346                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2347                 if (!add_f) {
2348                         dev_info(&vsi->back->pdev->dev,
2349                                  "Could not add vlan filter %d for %pM\n",
2350                                  vid, f->macaddr);
2351                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2352                         return -ENOMEM;
2353                 }
2354         }
2355
2356         /* Now if we add a vlan tag, make sure to check if it is the first
2357          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2358          * with 0, so we now accept untagged and specified tagged traffic
2359          * (and not any taged and untagged)
2360          */
2361         if (vid > 0) {
2362                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2363                                                   I40E_VLAN_ANY,
2364                                                   is_vf, is_netdev)) {
2365                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2366                                         I40E_VLAN_ANY, is_vf, is_netdev);
2367                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2368                                                 is_vf, is_netdev);
2369                         if (!add_f) {
2370                                 dev_info(&vsi->back->pdev->dev,
2371                                          "Could not add filter 0 for %pM\n",
2372                                          vsi->netdev->dev_addr);
2373                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2374                                 return -ENOMEM;
2375                         }
2376                 }
2377         }
2378
2379         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2380         if (vid > 0 && !vsi->info.pvid) {
2381                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2382                         if (!i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2383                                               is_vf, is_netdev))
2384                                 continue;
2385                         i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2386                                         is_vf, is_netdev);
2387                         add_f = i40e_add_filter(vsi, f->macaddr,
2388                                                 0, is_vf, is_netdev);
2389                         if (!add_f) {
2390                                 dev_info(&vsi->back->pdev->dev,
2391                                          "Could not add filter 0 for %pM\n",
2392                                         f->macaddr);
2393                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2394                                 return -ENOMEM;
2395                         }
2396                 }
2397         }
2398
2399         spin_unlock_bh(&vsi->mac_filter_list_lock);
2400
2401         /* schedule our worker thread which will take care of
2402          * applying the new filter changes
2403          */
2404         i40e_service_event_schedule(vsi->back);
2405         return 0;
2406 }
2407
2408 /**
2409  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2410  * @vsi: the vsi being configured
2411  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2412  *
2413  * Return: 0 on success or negative otherwise
2414  **/
2415 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2416 {
2417         struct net_device *netdev = vsi->netdev;
2418         struct i40e_mac_filter *f, *add_f;
2419         bool is_vf, is_netdev;
2420         int filter_count = 0;
2421
2422         is_vf = (vsi->type == I40E_VSI_SRIOV);
2423         is_netdev = !!(netdev);
2424
2425         /* Locked once because all functions invoked below iterates list */
2426         spin_lock_bh(&vsi->mac_filter_list_lock);
2427
2428         if (is_netdev)
2429                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2430
2431         list_for_each_entry(f, &vsi->mac_filter_list, list)
2432                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2433
2434         /* go through all the filters for this VSI and if there is only
2435          * vid == 0 it means there are no other filters, so vid 0 must
2436          * be replaced with -1. This signifies that we should from now
2437          * on accept any traffic (with any tag present, or untagged)
2438          */
2439         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2440                 if (is_netdev) {
2441                         if (f->vlan &&
2442                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2443                                 filter_count++;
2444                 }
2445
2446                 if (f->vlan)
2447                         filter_count++;
2448         }
2449
2450         if (!filter_count && is_netdev) {
2451                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2452                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2453                                     is_vf, is_netdev);
2454                 if (!f) {
2455                         dev_info(&vsi->back->pdev->dev,
2456                                  "Could not add filter %d for %pM\n",
2457                                  I40E_VLAN_ANY, netdev->dev_addr);
2458                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2459                         return -ENOMEM;
2460                 }
2461         }
2462
2463         if (!filter_count) {
2464                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2465                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2466                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2467                                                 is_vf, is_netdev);
2468                         if (!add_f) {
2469                                 dev_info(&vsi->back->pdev->dev,
2470                                          "Could not add filter %d for %pM\n",
2471                                          I40E_VLAN_ANY, f->macaddr);
2472                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2473                                 return -ENOMEM;
2474                         }
2475                 }
2476         }
2477
2478         spin_unlock_bh(&vsi->mac_filter_list_lock);
2479
2480         /* schedule our worker thread which will take care of
2481          * applying the new filter changes
2482          */
2483         i40e_service_event_schedule(vsi->back);
2484         return 0;
2485 }
2486
2487 /**
2488  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2489  * @netdev: network interface to be adjusted
2490  * @vid: vlan id to be added
2491  *
2492  * net_device_ops implementation for adding vlan ids
2493  **/
2494 #ifdef I40E_FCOE
2495 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2496                          __always_unused __be16 proto, u16 vid)
2497 #else
2498 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2499                                 __always_unused __be16 proto, u16 vid)
2500 #endif
2501 {
2502         struct i40e_netdev_priv *np = netdev_priv(netdev);
2503         struct i40e_vsi *vsi = np->vsi;
2504         int ret = 0;
2505
2506         if (vid > 4095)
2507                 return -EINVAL;
2508
2509         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2510
2511         /* If the network stack called us with vid = 0 then
2512          * it is asking to receive priority tagged packets with
2513          * vlan id 0.  Our HW receives them by default when configured
2514          * to receive untagged packets so there is no need to add an
2515          * extra filter for vlan 0 tagged packets.
2516          */
2517         if (vid)
2518                 ret = i40e_vsi_add_vlan(vsi, vid);
2519
2520         if (!ret && (vid < VLAN_N_VID))
2521                 set_bit(vid, vsi->active_vlans);
2522
2523         return ret;
2524 }
2525
2526 /**
2527  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2528  * @netdev: network interface to be adjusted
2529  * @vid: vlan id to be removed
2530  *
2531  * net_device_ops implementation for removing vlan ids
2532  **/
2533 #ifdef I40E_FCOE
2534 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2535                           __always_unused __be16 proto, u16 vid)
2536 #else
2537 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2538                                  __always_unused __be16 proto, u16 vid)
2539 #endif
2540 {
2541         struct i40e_netdev_priv *np = netdev_priv(netdev);
2542         struct i40e_vsi *vsi = np->vsi;
2543
2544         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2545
2546         /* return code is ignored as there is nothing a user
2547          * can do about failure to remove and a log message was
2548          * already printed from the other function
2549          */
2550         i40e_vsi_kill_vlan(vsi, vid);
2551
2552         clear_bit(vid, vsi->active_vlans);
2553
2554         return 0;
2555 }
2556
2557 /**
2558  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2559  * @vsi: the vsi being brought back up
2560  **/
2561 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2562 {
2563         u16 vid;
2564
2565         if (!vsi->netdev)
2566                 return;
2567
2568         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2569
2570         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2571                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2572                                      vid);
2573 }
2574
2575 /**
2576  * i40e_vsi_add_pvid - Add pvid for the VSI
2577  * @vsi: the vsi being adjusted
2578  * @vid: the vlan id to set as a PVID
2579  **/
2580 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2581 {
2582         struct i40e_vsi_context ctxt;
2583         i40e_status ret;
2584
2585         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2586         vsi->info.pvid = cpu_to_le16(vid);
2587         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2588                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2589                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2590
2591         ctxt.seid = vsi->seid;
2592         ctxt.info = vsi->info;
2593         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2594         if (ret) {
2595                 dev_info(&vsi->back->pdev->dev,
2596                          "add pvid failed, err %s aq_err %s\n",
2597                          i40e_stat_str(&vsi->back->hw, ret),
2598                          i40e_aq_str(&vsi->back->hw,
2599                                      vsi->back->hw.aq.asq_last_status));
2600                 return -ENOENT;
2601         }
2602
2603         return 0;
2604 }
2605
2606 /**
2607  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2608  * @vsi: the vsi being adjusted
2609  *
2610  * Just use the vlan_rx_register() service to put it back to normal
2611  **/
2612 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2613 {
2614         i40e_vlan_stripping_disable(vsi);
2615
2616         vsi->info.pvid = 0;
2617 }
2618
2619 /**
2620  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2621  * @vsi: ptr to the VSI
2622  *
2623  * If this function returns with an error, then it's possible one or
2624  * more of the rings is populated (while the rest are not).  It is the
2625  * callers duty to clean those orphaned rings.
2626  *
2627  * Return 0 on success, negative on failure
2628  **/
2629 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2630 {
2631         int i, err = 0;
2632
2633         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2634                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2635
2636         return err;
2637 }
2638
2639 /**
2640  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2641  * @vsi: ptr to the VSI
2642  *
2643  * Free VSI's transmit software resources
2644  **/
2645 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2646 {
2647         int i;
2648
2649         if (!vsi->tx_rings)
2650                 return;
2651
2652         for (i = 0; i < vsi->num_queue_pairs; i++)
2653                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2654                         i40e_free_tx_resources(vsi->tx_rings[i]);
2655 }
2656
2657 /**
2658  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2659  * @vsi: ptr to the VSI
2660  *
2661  * If this function returns with an error, then it's possible one or
2662  * more of the rings is populated (while the rest are not).  It is the
2663  * callers duty to clean those orphaned rings.
2664  *
2665  * Return 0 on success, negative on failure
2666  **/
2667 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2668 {
2669         int i, err = 0;
2670
2671         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2672                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2673 #ifdef I40E_FCOE
2674         i40e_fcoe_setup_ddp_resources(vsi);
2675 #endif
2676         return err;
2677 }
2678
2679 /**
2680  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2681  * @vsi: ptr to the VSI
2682  *
2683  * Free all receive software resources
2684  **/
2685 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2686 {
2687         int i;
2688
2689         if (!vsi->rx_rings)
2690                 return;
2691
2692         for (i = 0; i < vsi->num_queue_pairs; i++)
2693                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2694                         i40e_free_rx_resources(vsi->rx_rings[i]);
2695 #ifdef I40E_FCOE
2696         i40e_fcoe_free_ddp_resources(vsi);
2697 #endif
2698 }
2699
2700 /**
2701  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2702  * @ring: The Tx ring to configure
2703  *
2704  * This enables/disables XPS for a given Tx descriptor ring
2705  * based on the TCs enabled for the VSI that ring belongs to.
2706  **/
2707 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2708 {
2709         struct i40e_vsi *vsi = ring->vsi;
2710         cpumask_var_t mask;
2711
2712         if (!ring->q_vector || !ring->netdev)
2713                 return;
2714
2715         /* Single TC mode enable XPS */
2716         if (vsi->tc_config.numtc <= 1) {
2717                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2718                         netif_set_xps_queue(ring->netdev,
2719                                             &ring->q_vector->affinity_mask,
2720                                             ring->queue_index);
2721         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2722                 /* Disable XPS to allow selection based on TC */
2723                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2724                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2725                 free_cpumask_var(mask);
2726         }
2727
2728         /* schedule our worker thread which will take care of
2729          * applying the new filter changes
2730          */
2731         i40e_service_event_schedule(vsi->back);
2732 }
2733
2734 /**
2735  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2736  * @ring: The Tx ring to configure
2737  *
2738  * Configure the Tx descriptor ring in the HMC context.
2739  **/
2740 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2741 {
2742         struct i40e_vsi *vsi = ring->vsi;
2743         u16 pf_q = vsi->base_queue + ring->queue_index;
2744         struct i40e_hw *hw = &vsi->back->hw;
2745         struct i40e_hmc_obj_txq tx_ctx;
2746         i40e_status err = 0;
2747         u32 qtx_ctl = 0;
2748
2749         /* some ATR related tx ring init */
2750         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2751                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2752                 ring->atr_count = 0;
2753         } else {
2754                 ring->atr_sample_rate = 0;
2755         }
2756
2757         /* configure XPS */
2758         i40e_config_xps_tx_ring(ring);
2759
2760         /* clear the context structure first */
2761         memset(&tx_ctx, 0, sizeof(tx_ctx));
2762
2763         tx_ctx.new_context = 1;
2764         tx_ctx.base = (ring->dma / 128);
2765         tx_ctx.qlen = ring->count;
2766         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2767                                                I40E_FLAG_FD_ATR_ENABLED));
2768 #ifdef I40E_FCOE
2769         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2770 #endif
2771         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2772         /* FDIR VSI tx ring can still use RS bit and writebacks */
2773         if (vsi->type != I40E_VSI_FDIR)
2774                 tx_ctx.head_wb_ena = 1;
2775         tx_ctx.head_wb_addr = ring->dma +
2776                               (ring->count * sizeof(struct i40e_tx_desc));
2777
2778         /* As part of VSI creation/update, FW allocates certain
2779          * Tx arbitration queue sets for each TC enabled for
2780          * the VSI. The FW returns the handles to these queue
2781          * sets as part of the response buffer to Add VSI,
2782          * Update VSI, etc. AQ commands. It is expected that
2783          * these queue set handles be associated with the Tx
2784          * queues by the driver as part of the TX queue context
2785          * initialization. This has to be done regardless of
2786          * DCB as by default everything is mapped to TC0.
2787          */
2788         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2789         tx_ctx.rdylist_act = 0;
2790
2791         /* clear the context in the HMC */
2792         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2793         if (err) {
2794                 dev_info(&vsi->back->pdev->dev,
2795                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2796                          ring->queue_index, pf_q, err);
2797                 return -ENOMEM;
2798         }
2799
2800         /* set the context in the HMC */
2801         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2802         if (err) {
2803                 dev_info(&vsi->back->pdev->dev,
2804                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2805                          ring->queue_index, pf_q, err);
2806                 return -ENOMEM;
2807         }
2808
2809         /* Now associate this queue with this PCI function */
2810         if (vsi->type == I40E_VSI_VMDQ2) {
2811                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2812                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2813                            I40E_QTX_CTL_VFVM_INDX_MASK;
2814         } else {
2815                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2816         }
2817
2818         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2819                     I40E_QTX_CTL_PF_INDX_MASK);
2820         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2821         i40e_flush(hw);
2822
2823         /* cache tail off for easier writes later */
2824         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2825
2826         return 0;
2827 }
2828
2829 /**
2830  * i40e_configure_rx_ring - Configure a receive ring context
2831  * @ring: The Rx ring to configure
2832  *
2833  * Configure the Rx descriptor ring in the HMC context.
2834  **/
2835 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2836 {
2837         struct i40e_vsi *vsi = ring->vsi;
2838         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2839         u16 pf_q = vsi->base_queue + ring->queue_index;
2840         struct i40e_hw *hw = &vsi->back->hw;
2841         struct i40e_hmc_obj_rxq rx_ctx;
2842         i40e_status err = 0;
2843
2844         ring->state = 0;
2845
2846         /* clear the context structure first */
2847         memset(&rx_ctx, 0, sizeof(rx_ctx));
2848
2849         ring->rx_buf_len = vsi->rx_buf_len;
2850         ring->rx_hdr_len = vsi->rx_hdr_len;
2851
2852         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2853         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2854
2855         rx_ctx.base = (ring->dma / 128);
2856         rx_ctx.qlen = ring->count;
2857
2858         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2859                 set_ring_16byte_desc_enabled(ring);
2860                 rx_ctx.dsize = 0;
2861         } else {
2862                 rx_ctx.dsize = 1;
2863         }
2864
2865         rx_ctx.dtype = vsi->dtype;
2866         if (vsi->dtype) {
2867                 set_ring_ps_enabled(ring);
2868                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2869                                   I40E_RX_SPLIT_IP      |
2870                                   I40E_RX_SPLIT_TCP_UDP |
2871                                   I40E_RX_SPLIT_SCTP;
2872         } else {
2873                 rx_ctx.hsplit_0 = 0;
2874         }
2875
2876         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2877                                   (chain_len * ring->rx_buf_len));
2878         if (hw->revision_id == 0)
2879                 rx_ctx.lrxqthresh = 0;
2880         else
2881                 rx_ctx.lrxqthresh = 2;
2882         rx_ctx.crcstrip = 1;
2883         rx_ctx.l2tsel = 1;
2884         /* this controls whether VLAN is stripped from inner headers */
2885         rx_ctx.showiv = 0;
2886 #ifdef I40E_FCOE
2887         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2888 #endif
2889         /* set the prefena field to 1 because the manual says to */
2890         rx_ctx.prefena = 1;
2891
2892         /* clear the context in the HMC */
2893         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2894         if (err) {
2895                 dev_info(&vsi->back->pdev->dev,
2896                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2897                          ring->queue_index, pf_q, err);
2898                 return -ENOMEM;
2899         }
2900
2901         /* set the context in the HMC */
2902         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2903         if (err) {
2904                 dev_info(&vsi->back->pdev->dev,
2905                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2906                          ring->queue_index, pf_q, err);
2907                 return -ENOMEM;
2908         }
2909
2910         /* cache tail for quicker writes, and clear the reg before use */
2911         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2912         writel(0, ring->tail);
2913
2914         if (ring_is_ps_enabled(ring)) {
2915                 i40e_alloc_rx_headers(ring);
2916                 i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
2917         } else {
2918                 i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
2919         }
2920
2921         return 0;
2922 }
2923
2924 /**
2925  * i40e_vsi_configure_tx - Configure the VSI for Tx
2926  * @vsi: VSI structure describing this set of rings and resources
2927  *
2928  * Configure the Tx VSI for operation.
2929  **/
2930 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2931 {
2932         int err = 0;
2933         u16 i;
2934
2935         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2936                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2937
2938         return err;
2939 }
2940
2941 /**
2942  * i40e_vsi_configure_rx - Configure the VSI for Rx
2943  * @vsi: the VSI being configured
2944  *
2945  * Configure the Rx VSI for operation.
2946  **/
2947 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2948 {
2949         int err = 0;
2950         u16 i;
2951
2952         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2953                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2954                                + ETH_FCS_LEN + VLAN_HLEN;
2955         else
2956                 vsi->max_frame = I40E_RXBUFFER_2048;
2957
2958         /* figure out correct receive buffer length */
2959         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2960                                     I40E_FLAG_RX_PS_ENABLED)) {
2961         case I40E_FLAG_RX_1BUF_ENABLED:
2962                 vsi->rx_hdr_len = 0;
2963                 vsi->rx_buf_len = vsi->max_frame;
2964                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2965                 break;
2966         case I40E_FLAG_RX_PS_ENABLED:
2967                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2968                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2969                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2970                 break;
2971         default:
2972                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2973                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2974                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2975                 break;
2976         }
2977
2978 #ifdef I40E_FCOE
2979         /* setup rx buffer for FCoE */
2980         if ((vsi->type == I40E_VSI_FCOE) &&
2981             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2982                 vsi->rx_hdr_len = 0;
2983                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2984                 vsi->max_frame = I40E_RXBUFFER_3072;
2985                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2986         }
2987
2988 #endif /* I40E_FCOE */
2989         /* round up for the chip's needs */
2990         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2991                                 BIT_ULL(I40E_RXQ_CTX_HBUFF_SHIFT));
2992         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2993                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
2994
2995         /* set up individual rings */
2996         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2997                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2998
2999         return err;
3000 }
3001
3002 /**
3003  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
3004  * @vsi: ptr to the VSI
3005  **/
3006 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
3007 {
3008         struct i40e_ring *tx_ring, *rx_ring;
3009         u16 qoffset, qcount;
3010         int i, n;
3011
3012         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
3013                 /* Reset the TC information */
3014                 for (i = 0; i < vsi->num_queue_pairs; i++) {
3015                         rx_ring = vsi->rx_rings[i];
3016                         tx_ring = vsi->tx_rings[i];
3017                         rx_ring->dcb_tc = 0;
3018                         tx_ring->dcb_tc = 0;
3019                 }
3020         }
3021
3022         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
3023                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
3024                         continue;
3025
3026                 qoffset = vsi->tc_config.tc_info[n].qoffset;
3027                 qcount = vsi->tc_config.tc_info[n].qcount;
3028                 for (i = qoffset; i < (qoffset + qcount); i++) {
3029                         rx_ring = vsi->rx_rings[i];
3030                         tx_ring = vsi->tx_rings[i];
3031                         rx_ring->dcb_tc = n;
3032                         tx_ring->dcb_tc = n;
3033                 }
3034         }
3035 }
3036
3037 /**
3038  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
3039  * @vsi: ptr to the VSI
3040  **/
3041 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
3042 {
3043         if (vsi->netdev)
3044                 i40e_set_rx_mode(vsi->netdev);
3045 }
3046
3047 /**
3048  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
3049  * @vsi: Pointer to the targeted VSI
3050  *
3051  * This function replays the hlist on the hw where all the SB Flow Director
3052  * filters were saved.
3053  **/
3054 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
3055 {
3056         struct i40e_fdir_filter *filter;
3057         struct i40e_pf *pf = vsi->back;
3058         struct hlist_node *node;
3059
3060         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3061                 return;
3062
3063         hlist_for_each_entry_safe(filter, node,
3064                                   &pf->fdir_filter_list, fdir_node) {
3065                 i40e_add_del_fdir(vsi, filter, true);
3066         }
3067 }
3068
3069 /**
3070  * i40e_vsi_configure - Set up the VSI for action
3071  * @vsi: the VSI being configured
3072  **/
3073 static int i40e_vsi_configure(struct i40e_vsi *vsi)
3074 {
3075         int err;
3076
3077         i40e_set_vsi_rx_mode(vsi);
3078         i40e_restore_vlan(vsi);
3079         i40e_vsi_config_dcb_rings(vsi);
3080         err = i40e_vsi_configure_tx(vsi);
3081         if (!err)
3082                 err = i40e_vsi_configure_rx(vsi);
3083
3084         return err;
3085 }
3086
3087 /**
3088  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
3089  * @vsi: the VSI being configured
3090  **/
3091 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
3092 {
3093         struct i40e_pf *pf = vsi->back;
3094         struct i40e_hw *hw = &pf->hw;
3095         u16 vector;
3096         int i, q;
3097         u32 qp;
3098
3099         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
3100          * and PFINT_LNKLSTn registers, e.g.:
3101          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
3102          */
3103         qp = vsi->base_queue;
3104         vector = vsi->base_vector;
3105         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3106                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
3107
3108                 q_vector->itr_countdown = ITR_COUNTDOWN_START;
3109                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3110                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
3111                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3112                      q_vector->rx.itr);
3113                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3114                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
3115                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3116                      q_vector->tx.itr);
3117                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
3118                      INTRL_USEC_TO_REG(vsi->int_rate_limit));
3119
3120                 /* Linked list for the queuepairs assigned to this vector */
3121                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
3122                 for (q = 0; q < q_vector->num_ringpairs; q++) {
3123                         u32 val;
3124
3125                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3126                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
3127                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
3128                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
3129                               (I40E_QUEUE_TYPE_TX
3130                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
3131
3132                         wr32(hw, I40E_QINT_RQCTL(qp), val);
3133
3134                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3135                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
3136                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3137                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
3138                               (I40E_QUEUE_TYPE_RX
3139                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3140
3141                         /* Terminate the linked list */
3142                         if (q == (q_vector->num_ringpairs - 1))
3143                                 val |= (I40E_QUEUE_END_OF_LIST
3144                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3145
3146                         wr32(hw, I40E_QINT_TQCTL(qp), val);
3147                         qp++;
3148                 }
3149         }
3150
3151         i40e_flush(hw);
3152 }
3153
3154 /**
3155  * i40e_enable_misc_int_causes - enable the non-queue interrupts
3156  * @hw: ptr to the hardware info
3157  **/
3158 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
3159 {
3160         struct i40e_hw *hw = &pf->hw;
3161         u32 val;
3162
3163         /* clear things first */
3164         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
3165         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
3166
3167         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
3168               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
3169               I40E_PFINT_ICR0_ENA_GRST_MASK          |
3170               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
3171               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
3172               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
3173               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
3174               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3175
3176         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
3177                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3178
3179         if (pf->flags & I40E_FLAG_PTP)
3180                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3181
3182         wr32(hw, I40E_PFINT_ICR0_ENA, val);
3183
3184         /* SW_ITR_IDX = 0, but don't change INTENA */
3185         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
3186                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
3187
3188         /* OTHER_ITR_IDX = 0 */
3189         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
3190 }
3191
3192 /**
3193  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3194  * @vsi: the VSI being configured
3195  **/
3196 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3197 {
3198         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3199         struct i40e_pf *pf = vsi->back;
3200         struct i40e_hw *hw = &pf->hw;
3201         u32 val;
3202
3203         /* set the ITR configuration */
3204         q_vector->itr_countdown = ITR_COUNTDOWN_START;
3205         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3206         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3207         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3208         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3209         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3210         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3211
3212         i40e_enable_misc_int_causes(pf);
3213
3214         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3215         wr32(hw, I40E_PFINT_LNKLST0, 0);
3216
3217         /* Associate the queue pair to the vector and enable the queue int */
3218         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3219               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3220               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3221
3222         wr32(hw, I40E_QINT_RQCTL(0), val);
3223
3224         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3225               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3226               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3227
3228         wr32(hw, I40E_QINT_TQCTL(0), val);
3229         i40e_flush(hw);
3230 }
3231
3232 /**
3233  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3234  * @pf: board private structure
3235  **/
3236 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3237 {
3238         struct i40e_hw *hw = &pf->hw;
3239
3240         wr32(hw, I40E_PFINT_DYN_CTL0,
3241              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3242         i40e_flush(hw);
3243 }
3244
3245 /**
3246  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3247  * @pf: board private structure
3248  **/
3249 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
3250 {
3251         struct i40e_hw *hw = &pf->hw;
3252         u32 val;
3253
3254         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3255               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
3256               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3257
3258         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3259         i40e_flush(hw);
3260 }
3261
3262 /**
3263  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
3264  * @vsi: pointer to a vsi
3265  * @vector: disable a particular Hw Interrupt vector
3266  **/
3267 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
3268 {
3269         struct i40e_pf *pf = vsi->back;
3270         struct i40e_hw *hw = &pf->hw;
3271         u32 val;
3272
3273         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
3274         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
3275         i40e_flush(hw);
3276 }
3277
3278 /**
3279  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3280  * @irq: interrupt number
3281  * @data: pointer to a q_vector
3282  **/
3283 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3284 {
3285         struct i40e_q_vector *q_vector = data;
3286
3287         if (!q_vector->tx.ring && !q_vector->rx.ring)
3288                 return IRQ_HANDLED;
3289
3290         napi_schedule_irqoff(&q_vector->napi);
3291
3292         return IRQ_HANDLED;
3293 }
3294
3295 /**
3296  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3297  * @vsi: the VSI being configured
3298  * @basename: name for the vector
3299  *
3300  * Allocates MSI-X vectors and requests interrupts from the kernel.
3301  **/
3302 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3303 {
3304         int q_vectors = vsi->num_q_vectors;
3305         struct i40e_pf *pf = vsi->back;
3306         int base = vsi->base_vector;
3307         int rx_int_idx = 0;
3308         int tx_int_idx = 0;
3309         int vector, err;
3310
3311         for (vector = 0; vector < q_vectors; vector++) {
3312                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3313
3314                 if (q_vector->tx.ring && q_vector->rx.ring) {
3315                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3316                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3317                         tx_int_idx++;
3318                 } else if (q_vector->rx.ring) {
3319                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3320                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3321                 } else if (q_vector->tx.ring) {
3322                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3323                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3324                 } else {
3325                         /* skip this unused q_vector */
3326                         continue;
3327                 }
3328                 err = request_irq(pf->msix_entries[base + vector].vector,
3329                                   vsi->irq_handler,
3330                                   0,
3331                                   q_vector->name,
3332                                   q_vector);
3333                 if (err) {
3334                         dev_info(&pf->pdev->dev,
3335                                  "MSIX request_irq failed, error: %d\n", err);
3336                         goto free_queue_irqs;
3337                 }
3338                 /* assign the mask for this irq */
3339                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3340                                       &q_vector->affinity_mask);
3341         }
3342
3343         vsi->irqs_ready = true;
3344         return 0;
3345
3346 free_queue_irqs:
3347         while (vector) {
3348                 vector--;
3349                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3350                                       NULL);
3351                 free_irq(pf->msix_entries[base + vector].vector,
3352                          &(vsi->q_vectors[vector]));
3353         }
3354         return err;
3355 }
3356
3357 /**
3358  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3359  * @vsi: the VSI being un-configured
3360  **/
3361 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3362 {
3363         struct i40e_pf *pf = vsi->back;
3364         struct i40e_hw *hw = &pf->hw;
3365         int base = vsi->base_vector;
3366         int i;
3367
3368         for (i = 0; i < vsi->num_queue_pairs; i++) {
3369                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3370                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3371         }
3372
3373         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3374                 for (i = vsi->base_vector;
3375                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3376                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3377
3378                 i40e_flush(hw);
3379                 for (i = 0; i < vsi->num_q_vectors; i++)
3380                         synchronize_irq(pf->msix_entries[i + base].vector);
3381         } else {
3382                 /* Legacy and MSI mode - this stops all interrupt handling */
3383                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3384                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3385                 i40e_flush(hw);
3386                 synchronize_irq(pf->pdev->irq);
3387         }
3388 }
3389
3390 /**
3391  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3392  * @vsi: the VSI being configured
3393  **/
3394 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3395 {
3396         struct i40e_pf *pf = vsi->back;
3397         int i;
3398
3399         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3400                 for (i = 0; i < vsi->num_q_vectors; i++)
3401                         i40e_irq_dynamic_enable(vsi, i);
3402         } else {
3403                 i40e_irq_dynamic_enable_icr0(pf);
3404         }
3405
3406         i40e_flush(&pf->hw);
3407         return 0;
3408 }
3409
3410 /**
3411  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3412  * @pf: board private structure
3413  **/
3414 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3415 {
3416         /* Disable ICR 0 */
3417         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3418         i40e_flush(&pf->hw);
3419 }
3420
3421 /**
3422  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3423  * @irq: interrupt number
3424  * @data: pointer to a q_vector
3425  *
3426  * This is the handler used for all MSI/Legacy interrupts, and deals
3427  * with both queue and non-queue interrupts.  This is also used in
3428  * MSIX mode to handle the non-queue interrupts.
3429  **/
3430 static irqreturn_t i40e_intr(int irq, void *data)
3431 {
3432         struct i40e_pf *pf = (struct i40e_pf *)data;
3433         struct i40e_hw *hw = &pf->hw;
3434         irqreturn_t ret = IRQ_NONE;
3435         u32 icr0, icr0_remaining;
3436         u32 val, ena_mask;
3437
3438         icr0 = rd32(hw, I40E_PFINT_ICR0);
3439         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3440
3441         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3442         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3443                 goto enable_intr;
3444
3445         /* if interrupt but no bits showing, must be SWINT */
3446         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3447             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3448                 pf->sw_int_count++;
3449
3450         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3451             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3452                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3453                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3454                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3455         }
3456
3457         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3458         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3459                 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
3460                 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3461
3462                 /* temporarily disable queue cause for NAPI processing */
3463                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3464
3465                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3466                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3467
3468                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3469                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3470                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3471
3472                 if (!test_bit(__I40E_DOWN, &pf->state))
3473                         napi_schedule_irqoff(&q_vector->napi);
3474         }
3475
3476         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3477                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3478                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3479         }
3480
3481         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3482                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3483                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3484         }
3485
3486         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3487                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3488                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3489         }
3490
3491         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3492                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3493                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3494                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3495                 val = rd32(hw, I40E_GLGEN_RSTAT);
3496                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3497                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3498                 if (val == I40E_RESET_CORER) {
3499                         pf->corer_count++;
3500                 } else if (val == I40E_RESET_GLOBR) {
3501                         pf->globr_count++;
3502                 } else if (val == I40E_RESET_EMPR) {
3503                         pf->empr_count++;
3504                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3505                 }
3506         }
3507
3508         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3509                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3510                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3511                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3512                          rd32(hw, I40E_PFHMC_ERRORINFO),
3513                          rd32(hw, I40E_PFHMC_ERRORDATA));
3514         }
3515
3516         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3517                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3518
3519                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3520                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3521                         i40e_ptp_tx_hwtstamp(pf);
3522                 }
3523         }
3524
3525         /* If a critical error is pending we have no choice but to reset the
3526          * device.
3527          * Report and mask out any remaining unexpected interrupts.
3528          */
3529         icr0_remaining = icr0 & ena_mask;
3530         if (icr0_remaining) {
3531                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3532                          icr0_remaining);
3533                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3534                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3535                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3536                         dev_info(&pf->pdev->dev, "device will be reset\n");
3537                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3538                         i40e_service_event_schedule(pf);
3539                 }
3540                 ena_mask &= ~icr0_remaining;
3541         }
3542         ret = IRQ_HANDLED;
3543
3544 enable_intr:
3545         /* re-enable interrupt causes */
3546         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3547         if (!test_bit(__I40E_DOWN, &pf->state)) {
3548                 i40e_service_event_schedule(pf);
3549                 i40e_irq_dynamic_enable_icr0(pf);
3550         }
3551
3552         return ret;
3553 }
3554
3555 /**
3556  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3557  * @tx_ring:  tx ring to clean
3558  * @budget:   how many cleans we're allowed
3559  *
3560  * Returns true if there's any budget left (e.g. the clean is finished)
3561  **/
3562 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3563 {
3564         struct i40e_vsi *vsi = tx_ring->vsi;
3565         u16 i = tx_ring->next_to_clean;
3566         struct i40e_tx_buffer *tx_buf;
3567         struct i40e_tx_desc *tx_desc;
3568
3569         tx_buf = &tx_ring->tx_bi[i];
3570         tx_desc = I40E_TX_DESC(tx_ring, i);
3571         i -= tx_ring->count;
3572
3573         do {
3574                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3575
3576                 /* if next_to_watch is not set then there is no work pending */
3577                 if (!eop_desc)
3578                         break;
3579
3580                 /* prevent any other reads prior to eop_desc */
3581                 read_barrier_depends();
3582
3583                 /* if the descriptor isn't done, no work yet to do */
3584                 if (!(eop_desc->cmd_type_offset_bsz &
3585                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3586                         break;
3587
3588                 /* clear next_to_watch to prevent false hangs */
3589                 tx_buf->next_to_watch = NULL;
3590
3591                 tx_desc->buffer_addr = 0;
3592                 tx_desc->cmd_type_offset_bsz = 0;
3593                 /* move past filter desc */
3594                 tx_buf++;
3595                 tx_desc++;
3596                 i++;
3597                 if (unlikely(!i)) {
3598                         i -= tx_ring->count;
3599                         tx_buf = tx_ring->tx_bi;
3600                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3601                 }
3602                 /* unmap skb header data */
3603                 dma_unmap_single(tx_ring->dev,
3604                                  dma_unmap_addr(tx_buf, dma),
3605                                  dma_unmap_len(tx_buf, len),
3606                                  DMA_TO_DEVICE);
3607                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3608                         kfree(tx_buf->raw_buf);
3609
3610                 tx_buf->raw_buf = NULL;
3611                 tx_buf->tx_flags = 0;
3612                 tx_buf->next_to_watch = NULL;
3613                 dma_unmap_len_set(tx_buf, len, 0);
3614                 tx_desc->buffer_addr = 0;
3615                 tx_desc->cmd_type_offset_bsz = 0;
3616
3617                 /* move us past the eop_desc for start of next FD desc */
3618                 tx_buf++;
3619                 tx_desc++;
3620                 i++;
3621                 if (unlikely(!i)) {
3622                         i -= tx_ring->count;
3623                         tx_buf = tx_ring->tx_bi;
3624                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3625                 }
3626
3627                 /* update budget accounting */
3628                 budget--;
3629         } while (likely(budget));
3630
3631         i += tx_ring->count;
3632         tx_ring->next_to_clean = i;
3633
3634         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
3635                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3636
3637         return budget > 0;
3638 }
3639
3640 /**
3641  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3642  * @irq: interrupt number
3643  * @data: pointer to a q_vector
3644  **/
3645 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3646 {
3647         struct i40e_q_vector *q_vector = data;
3648         struct i40e_vsi *vsi;
3649
3650         if (!q_vector->tx.ring)
3651                 return IRQ_HANDLED;
3652
3653         vsi = q_vector->tx.ring->vsi;
3654         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3655
3656         return IRQ_HANDLED;
3657 }
3658
3659 /**
3660  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3661  * @vsi: the VSI being configured
3662  * @v_idx: vector index
3663  * @qp_idx: queue pair index
3664  **/
3665 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3666 {
3667         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3668         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3669         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3670
3671         tx_ring->q_vector = q_vector;
3672         tx_ring->next = q_vector->tx.ring;
3673         q_vector->tx.ring = tx_ring;
3674         q_vector->tx.count++;
3675
3676         rx_ring->q_vector = q_vector;
3677         rx_ring->next = q_vector->rx.ring;
3678         q_vector->rx.ring = rx_ring;
3679         q_vector->rx.count++;
3680 }
3681
3682 /**
3683  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3684  * @vsi: the VSI being configured
3685  *
3686  * This function maps descriptor rings to the queue-specific vectors
3687  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3688  * one vector per queue pair, but on a constrained vector budget, we
3689  * group the queue pairs as "efficiently" as possible.
3690  **/
3691 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3692 {
3693         int qp_remaining = vsi->num_queue_pairs;
3694         int q_vectors = vsi->num_q_vectors;
3695         int num_ringpairs;
3696         int v_start = 0;
3697         int qp_idx = 0;
3698
3699         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3700          * group them so there are multiple queues per vector.
3701          * It is also important to go through all the vectors available to be
3702          * sure that if we don't use all the vectors, that the remaining vectors
3703          * are cleared. This is especially important when decreasing the
3704          * number of queues in use.
3705          */
3706         for (; v_start < q_vectors; v_start++) {
3707                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3708
3709                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3710
3711                 q_vector->num_ringpairs = num_ringpairs;
3712
3713                 q_vector->rx.count = 0;
3714                 q_vector->tx.count = 0;
3715                 q_vector->rx.ring = NULL;
3716                 q_vector->tx.ring = NULL;
3717
3718                 while (num_ringpairs--) {
3719                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3720                         qp_idx++;
3721                         qp_remaining--;
3722                 }
3723         }
3724 }
3725
3726 /**
3727  * i40e_vsi_request_irq - Request IRQ from the OS
3728  * @vsi: the VSI being configured
3729  * @basename: name for the vector
3730  **/
3731 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3732 {
3733         struct i40e_pf *pf = vsi->back;
3734         int err;
3735
3736         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3737                 err = i40e_vsi_request_irq_msix(vsi, basename);
3738         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3739                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3740                                   pf->int_name, pf);
3741         else
3742                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3743                                   pf->int_name, pf);
3744
3745         if (err)
3746                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3747
3748         return err;
3749 }
3750
3751 #ifdef CONFIG_NET_POLL_CONTROLLER
3752 /**
3753  * i40e_netpoll - A Polling 'interrupt'handler
3754  * @netdev: network interface device structure
3755  *
3756  * This is used by netconsole to send skbs without having to re-enable
3757  * interrupts.  It's not called while the normal interrupt routine is executing.
3758  **/
3759 #ifdef I40E_FCOE
3760 void i40e_netpoll(struct net_device *netdev)
3761 #else
3762 static void i40e_netpoll(struct net_device *netdev)
3763 #endif
3764 {
3765         struct i40e_netdev_priv *np = netdev_priv(netdev);
3766         struct i40e_vsi *vsi = np->vsi;
3767         struct i40e_pf *pf = vsi->back;
3768         int i;
3769
3770         /* if interface is down do nothing */
3771         if (test_bit(__I40E_DOWN, &vsi->state))
3772                 return;
3773
3774         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3775                 for (i = 0; i < vsi->num_q_vectors; i++)
3776                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3777         } else {
3778                 i40e_intr(pf->pdev->irq, netdev);
3779         }
3780 }
3781 #endif
3782
3783 /**
3784  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3785  * @pf: the PF being configured
3786  * @pf_q: the PF queue
3787  * @enable: enable or disable state of the queue
3788  *
3789  * This routine will wait for the given Tx queue of the PF to reach the
3790  * enabled or disabled state.
3791  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3792  * multiple retries; else will return 0 in case of success.
3793  **/
3794 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3795 {
3796         int i;
3797         u32 tx_reg;
3798
3799         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3800                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3801                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3802                         break;
3803
3804                 usleep_range(10, 20);
3805         }
3806         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3807                 return -ETIMEDOUT;
3808
3809         return 0;
3810 }
3811
3812 /**
3813  * i40e_vsi_control_tx - Start or stop a VSI's rings
3814  * @vsi: the VSI being configured
3815  * @enable: start or stop the rings
3816  **/
3817 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3818 {
3819         struct i40e_pf *pf = vsi->back;
3820         struct i40e_hw *hw = &pf->hw;
3821         int i, j, pf_q, ret = 0;
3822         u32 tx_reg;
3823
3824         pf_q = vsi->base_queue;
3825         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3826
3827                 /* warn the TX unit of coming changes */
3828                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3829                 if (!enable)
3830                         usleep_range(10, 20);
3831
3832                 for (j = 0; j < 50; j++) {
3833                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3834                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3835                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3836                                 break;
3837                         usleep_range(1000, 2000);
3838                 }
3839                 /* Skip if the queue is already in the requested state */
3840                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3841                         continue;
3842
3843                 /* turn on/off the queue */
3844                 if (enable) {
3845                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3846                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3847                 } else {
3848                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3849                 }
3850
3851                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3852                 /* No waiting for the Tx queue to disable */
3853                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3854                         continue;
3855
3856                 /* wait for the change to finish */
3857                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3858                 if (ret) {
3859                         dev_info(&pf->pdev->dev,
3860                                  "VSI seid %d Tx ring %d %sable timeout\n",
3861                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3862                         break;
3863                 }
3864         }
3865
3866         if (hw->revision_id == 0)
3867                 mdelay(50);
3868         return ret;
3869 }
3870
3871 /**
3872  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3873  * @pf: the PF being configured
3874  * @pf_q: the PF queue
3875  * @enable: enable or disable state of the queue
3876  *
3877  * This routine will wait for the given Rx queue of the PF to reach the
3878  * enabled or disabled state.
3879  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3880  * multiple retries; else will return 0 in case of success.
3881  **/
3882 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3883 {
3884         int i;
3885         u32 rx_reg;
3886
3887         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3888                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3889                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3890                         break;
3891
3892                 usleep_range(10, 20);
3893         }
3894         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3895                 return -ETIMEDOUT;
3896
3897         return 0;
3898 }
3899
3900 /**
3901  * i40e_vsi_control_rx - Start or stop a VSI's rings
3902  * @vsi: the VSI being configured
3903  * @enable: start or stop the rings
3904  **/
3905 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3906 {
3907         struct i40e_pf *pf = vsi->back;
3908         struct i40e_hw *hw = &pf->hw;
3909         int i, j, pf_q, ret = 0;
3910         u32 rx_reg;
3911
3912         pf_q = vsi->base_queue;
3913         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3914                 for (j = 0; j < 50; j++) {
3915                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3916                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3917                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3918                                 break;
3919                         usleep_range(1000, 2000);
3920                 }
3921
3922                 /* Skip if the queue is already in the requested state */
3923                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3924                         continue;
3925
3926                 /* turn on/off the queue */
3927                 if (enable)
3928                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3929                 else
3930                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3931                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3932
3933                 /* wait for the change to finish */
3934                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3935                 if (ret) {
3936                         dev_info(&pf->pdev->dev,
3937                                  "VSI seid %d Rx ring %d %sable timeout\n",
3938                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3939                         break;
3940                 }
3941         }
3942
3943         return ret;
3944 }
3945
3946 /**
3947  * i40e_vsi_control_rings - Start or stop a VSI's rings
3948  * @vsi: the VSI being configured
3949  * @enable: start or stop the rings
3950  **/
3951 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3952 {
3953         int ret = 0;
3954
3955         /* do rx first for enable and last for disable */
3956         if (request) {
3957                 ret = i40e_vsi_control_rx(vsi, request);
3958                 if (ret)
3959                         return ret;
3960                 ret = i40e_vsi_control_tx(vsi, request);
3961         } else {
3962                 /* Ignore return value, we need to shutdown whatever we can */
3963                 i40e_vsi_control_tx(vsi, request);
3964                 i40e_vsi_control_rx(vsi, request);
3965         }
3966
3967         return ret;
3968 }
3969
3970 /**
3971  * i40e_vsi_free_irq - Free the irq association with the OS
3972  * @vsi: the VSI being configured
3973  **/
3974 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3975 {
3976         struct i40e_pf *pf = vsi->back;
3977         struct i40e_hw *hw = &pf->hw;
3978         int base = vsi->base_vector;
3979         u32 val, qp;
3980         int i;
3981
3982         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3983                 if (!vsi->q_vectors)
3984                         return;
3985
3986                 if (!vsi->irqs_ready)
3987                         return;
3988
3989                 vsi->irqs_ready = false;
3990                 for (i = 0; i < vsi->num_q_vectors; i++) {
3991                         u16 vector = i + base;
3992
3993                         /* free only the irqs that were actually requested */
3994                         if (!vsi->q_vectors[i] ||
3995                             !vsi->q_vectors[i]->num_ringpairs)
3996                                 continue;
3997
3998                         /* clear the affinity_mask in the IRQ descriptor */
3999                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
4000                                               NULL);
4001                         free_irq(pf->msix_entries[vector].vector,
4002                                  vsi->q_vectors[i]);
4003
4004                         /* Tear down the interrupt queue link list
4005                          *
4006                          * We know that they come in pairs and always
4007                          * the Rx first, then the Tx.  To clear the
4008                          * link list, stick the EOL value into the
4009                          * next_q field of the registers.
4010                          */
4011                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
4012                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4013                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4014                         val |= I40E_QUEUE_END_OF_LIST
4015                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4016                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
4017
4018                         while (qp != I40E_QUEUE_END_OF_LIST) {
4019                                 u32 next;
4020
4021                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4022
4023                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4024                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4025                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4026                                          I40E_QINT_RQCTL_INTEVENT_MASK);
4027
4028                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4029                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4030
4031                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4032
4033                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4034
4035                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
4036                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
4037
4038                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4039                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4040                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4041                                          I40E_QINT_TQCTL_INTEVENT_MASK);
4042
4043                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4044                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4045
4046                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4047                                 qp = next;
4048                         }
4049                 }
4050         } else {
4051                 free_irq(pf->pdev->irq, pf);
4052
4053                 val = rd32(hw, I40E_PFINT_LNKLST0);
4054                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4055                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4056                 val |= I40E_QUEUE_END_OF_LIST
4057                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
4058                 wr32(hw, I40E_PFINT_LNKLST0, val);
4059
4060                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4061                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4062                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4063                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4064                          I40E_QINT_RQCTL_INTEVENT_MASK);
4065
4066                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4067                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4068
4069                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4070
4071                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4072
4073                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4074                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4075                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4076                          I40E_QINT_TQCTL_INTEVENT_MASK);
4077
4078                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4079                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4080
4081                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4082         }
4083 }
4084
4085 /**
4086  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
4087  * @vsi: the VSI being configured
4088  * @v_idx: Index of vector to be freed
4089  *
4090  * This function frees the memory allocated to the q_vector.  In addition if
4091  * NAPI is enabled it will delete any references to the NAPI struct prior
4092  * to freeing the q_vector.
4093  **/
4094 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
4095 {
4096         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4097         struct i40e_ring *ring;
4098
4099         if (!q_vector)
4100                 return;
4101
4102         /* disassociate q_vector from rings */
4103         i40e_for_each_ring(ring, q_vector->tx)
4104                 ring->q_vector = NULL;
4105
4106         i40e_for_each_ring(ring, q_vector->rx)
4107                 ring->q_vector = NULL;
4108
4109         /* only VSI w/ an associated netdev is set up w/ NAPI */
4110         if (vsi->netdev)
4111                 netif_napi_del(&q_vector->napi);
4112
4113         vsi->q_vectors[v_idx] = NULL;
4114
4115         kfree_rcu(q_vector, rcu);
4116 }
4117
4118 /**
4119  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
4120  * @vsi: the VSI being un-configured
4121  *
4122  * This frees the memory allocated to the q_vectors and
4123  * deletes references to the NAPI struct.
4124  **/
4125 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
4126 {
4127         int v_idx;
4128
4129         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
4130                 i40e_free_q_vector(vsi, v_idx);
4131 }
4132
4133 /**
4134  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
4135  * @pf: board private structure
4136  **/
4137 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
4138 {
4139         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
4140         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4141                 pci_disable_msix(pf->pdev);
4142                 kfree(pf->msix_entries);
4143                 pf->msix_entries = NULL;
4144                 kfree(pf->irq_pile);
4145                 pf->irq_pile = NULL;
4146         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
4147                 pci_disable_msi(pf->pdev);
4148         }
4149         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
4150 }
4151
4152 /**
4153  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
4154  * @pf: board private structure
4155  *
4156  * We go through and clear interrupt specific resources and reset the structure
4157  * to pre-load conditions
4158  **/
4159 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
4160 {
4161         int i;
4162
4163         i40e_stop_misc_vector(pf);
4164         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4165                 synchronize_irq(pf->msix_entries[0].vector);
4166                 free_irq(pf->msix_entries[0].vector, pf);
4167         }
4168
4169         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
4170         for (i = 0; i < pf->num_alloc_vsi; i++)
4171                 if (pf->vsi[i])
4172                         i40e_vsi_free_q_vectors(pf->vsi[i]);
4173         i40e_reset_interrupt_capability(pf);
4174 }
4175
4176 /**
4177  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4178  * @vsi: the VSI being configured
4179  **/
4180 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4181 {
4182         int q_idx;
4183
4184         if (!vsi->netdev)
4185                 return;
4186
4187         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4188                 napi_enable(&vsi->q_vectors[q_idx]->napi);
4189 }
4190
4191 /**
4192  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4193  * @vsi: the VSI being configured
4194  **/
4195 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4196 {
4197         int q_idx;
4198
4199         if (!vsi->netdev)
4200                 return;
4201
4202         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4203                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4204 }
4205
4206 /**
4207  * i40e_vsi_close - Shut down a VSI
4208  * @vsi: the vsi to be quelled
4209  **/
4210 static void i40e_vsi_close(struct i40e_vsi *vsi)
4211 {
4212         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4213                 i40e_down(vsi);
4214         i40e_vsi_free_irq(vsi);
4215         i40e_vsi_free_tx_resources(vsi);
4216         i40e_vsi_free_rx_resources(vsi);
4217         vsi->current_netdev_flags = 0;
4218 }
4219
4220 /**
4221  * i40e_quiesce_vsi - Pause a given VSI
4222  * @vsi: the VSI being paused
4223  **/
4224 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4225 {
4226         if (test_bit(__I40E_DOWN, &vsi->state))
4227                 return;
4228
4229         /* No need to disable FCoE VSI when Tx suspended */
4230         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4231             vsi->type == I40E_VSI_FCOE) {
4232                 dev_dbg(&vsi->back->pdev->dev,
4233                          "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4234                 return;
4235         }
4236
4237         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4238         if (vsi->netdev && netif_running(vsi->netdev))
4239                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4240         else
4241                 i40e_vsi_close(vsi);
4242 }
4243
4244 /**
4245  * i40e_unquiesce_vsi - Resume a given VSI
4246  * @vsi: the VSI being resumed
4247  **/
4248 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4249 {
4250         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4251                 return;
4252
4253         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4254         if (vsi->netdev && netif_running(vsi->netdev))
4255                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4256         else
4257                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4258 }
4259
4260 /**
4261  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4262  * @pf: the PF
4263  **/
4264 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4265 {
4266         int v;
4267
4268         for (v = 0; v < pf->num_alloc_vsi; v++) {
4269                 if (pf->vsi[v])
4270                         i40e_quiesce_vsi(pf->vsi[v]);
4271         }
4272 }
4273
4274 /**
4275  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4276  * @pf: the PF
4277  **/
4278 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4279 {
4280         int v;
4281
4282         for (v = 0; v < pf->num_alloc_vsi; v++) {
4283                 if (pf->vsi[v])
4284                         i40e_unquiesce_vsi(pf->vsi[v]);
4285         }
4286 }
4287
4288 #ifdef CONFIG_I40E_DCB
4289 /**
4290  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
4291  * @vsi: the VSI being configured
4292  *
4293  * This function waits for the given VSI's Tx queues to be disabled.
4294  **/
4295 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
4296 {
4297         struct i40e_pf *pf = vsi->back;
4298         int i, pf_q, ret;
4299
4300         pf_q = vsi->base_queue;
4301         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4302                 /* Check and wait for the disable status of the queue */
4303                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4304                 if (ret) {
4305                         dev_info(&pf->pdev->dev,
4306                                  "VSI seid %d Tx ring %d disable timeout\n",
4307                                  vsi->seid, pf_q);
4308                         return ret;
4309                 }
4310         }
4311
4312         return 0;
4313 }
4314
4315 /**
4316  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
4317  * @pf: the PF
4318  *
4319  * This function waits for the Tx queues to be in disabled state for all the
4320  * VSIs that are managed by this PF.
4321  **/
4322 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
4323 {
4324         int v, ret = 0;
4325
4326         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4327                 /* No need to wait for FCoE VSI queues */
4328                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4329                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
4330                         if (ret)
4331                                 break;
4332                 }
4333         }
4334
4335         return ret;
4336 }
4337
4338 #endif
4339
4340 /**
4341  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4342  * @q_idx: TX queue number
4343  * @vsi: Pointer to VSI struct
4344  *
4345  * This function checks specified queue for given VSI. Detects hung condition.
4346  * Sets hung bit since it is two step process. Before next run of service task
4347  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4348  * hung condition remain unchanged and during subsequent run, this function
4349  * issues SW interrupt to recover from hung condition.
4350  **/
4351 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4352 {
4353         struct i40e_ring *tx_ring = NULL;
4354         struct i40e_pf  *pf;
4355         u32 head, val, tx_pending;
4356         int i;
4357
4358         pf = vsi->back;
4359
4360         /* now that we have an index, find the tx_ring struct */
4361         for (i = 0; i < vsi->num_queue_pairs; i++) {
4362                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4363                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4364                                 tx_ring = vsi->tx_rings[i];
4365                                 break;
4366                         }
4367                 }
4368         }
4369
4370         if (!tx_ring)
4371                 return;
4372
4373         /* Read interrupt register */
4374         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4375                 val = rd32(&pf->hw,
4376                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4377                                                tx_ring->vsi->base_vector - 1));
4378         else
4379                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4380
4381         /* Bail out if interrupts are disabled because napi_poll
4382          * execution in-progress or will get scheduled soon.
4383          * napi_poll cleans TX and RX queues and updates 'next_to_clean'.
4384          */
4385         if (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))
4386                 return;
4387
4388         head = i40e_get_head(tx_ring);
4389
4390         tx_pending = i40e_get_tx_pending(tx_ring);
4391
4392         /* HW is done executing descriptors, updated HEAD write back,
4393          * but SW hasn't processed those descriptors. If interrupt is
4394          * not generated from this point ON, it could result into
4395          * dev_watchdog detecting timeout on those netdev_queue,
4396          * hence proactively trigger SW interrupt.
4397          */
4398         if (tx_pending) {
4399                 /* NAPI Poll didn't run and clear since it was set */
4400                 if (test_and_clear_bit(I40E_Q_VECTOR_HUNG_DETECT,
4401                                        &tx_ring->q_vector->hung_detected)) {
4402                         netdev_info(vsi->netdev, "VSI_seid %d, Hung TX queue %d, tx_pending: %d, NTC:0x%x, HWB: 0x%x, NTU: 0x%x, TAIL: 0x%x\n",
4403                                     vsi->seid, q_idx, tx_pending,
4404                                     tx_ring->next_to_clean, head,
4405                                     tx_ring->next_to_use,
4406                                     readl(tx_ring->tail));
4407                         netdev_info(vsi->netdev, "VSI_seid %d, Issuing force_wb for TX queue %d, Interrupt Reg: 0x%x\n",
4408                                     vsi->seid, q_idx, val);
4409                         i40e_force_wb(vsi, tx_ring->q_vector);
4410                 } else {
4411                         /* First Chance - detected possible hung */
4412                         set_bit(I40E_Q_VECTOR_HUNG_DETECT,
4413                                 &tx_ring->q_vector->hung_detected);
4414                 }
4415         }
4416 }
4417
4418 /**
4419  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4420  * @pf:  pointer to PF struct
4421  *
4422  * LAN VSI has netdev and netdev has TX queues. This function is to check
4423  * each of those TX queues if they are hung, trigger recovery by issuing
4424  * SW interrupt.
4425  **/
4426 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4427 {
4428         struct net_device *netdev;
4429         struct i40e_vsi *vsi;
4430         int i;
4431
4432         /* Only for LAN VSI */
4433         vsi = pf->vsi[pf->lan_vsi];
4434
4435         if (!vsi)
4436                 return;
4437
4438         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4439         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4440             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4441                 return;
4442
4443         /* Make sure type is MAIN VSI */
4444         if (vsi->type != I40E_VSI_MAIN)
4445                 return;
4446
4447         netdev = vsi->netdev;
4448         if (!netdev)
4449                 return;
4450
4451         /* Bail out if netif_carrier is not OK */
4452         if (!netif_carrier_ok(netdev))
4453                 return;
4454
4455         /* Go thru' TX queues for netdev */
4456         for (i = 0; i < netdev->num_tx_queues; i++) {
4457                 struct netdev_queue *q;
4458
4459                 q = netdev_get_tx_queue(netdev, i);
4460                 if (q)
4461                         i40e_detect_recover_hung_queue(i, vsi);
4462         }
4463 }
4464
4465 /**
4466  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4467  * @pf: pointer to PF
4468  *
4469  * Get TC map for ISCSI PF type that will include iSCSI TC
4470  * and LAN TC.
4471  **/
4472 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4473 {
4474         struct i40e_dcb_app_priority_table app;
4475         struct i40e_hw *hw = &pf->hw;
4476         u8 enabled_tc = 1; /* TC0 is always enabled */
4477         u8 tc, i;
4478         /* Get the iSCSI APP TLV */
4479         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4480
4481         for (i = 0; i < dcbcfg->numapps; i++) {
4482                 app = dcbcfg->app[i];
4483                 if (app.selector == I40E_APP_SEL_TCPIP &&
4484                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4485                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4486                         enabled_tc |= BIT(tc);
4487                         break;
4488                 }
4489         }
4490
4491         return enabled_tc;
4492 }
4493
4494 /**
4495  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4496  * @dcbcfg: the corresponding DCBx configuration structure
4497  *
4498  * Return the number of TCs from given DCBx configuration
4499  **/
4500 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4501 {
4502         u8 num_tc = 0;
4503         int i;
4504
4505         /* Scan the ETS Config Priority Table to find
4506          * traffic class enabled for a given priority
4507          * and use the traffic class index to get the
4508          * number of traffic classes enabled
4509          */
4510         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4511                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4512                         num_tc = dcbcfg->etscfg.prioritytable[i];
4513         }
4514
4515         /* Traffic class index starts from zero so
4516          * increment to return the actual count
4517          */
4518         return num_tc + 1;
4519 }
4520
4521 /**
4522  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4523  * @dcbcfg: the corresponding DCBx configuration structure
4524  *
4525  * Query the current DCB configuration and return the number of
4526  * traffic classes enabled from the given DCBX config
4527  **/
4528 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4529 {
4530         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4531         u8 enabled_tc = 1;
4532         u8 i;
4533
4534         for (i = 0; i < num_tc; i++)
4535                 enabled_tc |= BIT(i);
4536
4537         return enabled_tc;
4538 }
4539
4540 /**
4541  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4542  * @pf: PF being queried
4543  *
4544  * Return number of traffic classes enabled for the given PF
4545  **/
4546 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4547 {
4548         struct i40e_hw *hw = &pf->hw;
4549         u8 i, enabled_tc;
4550         u8 num_tc = 0;
4551         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4552
4553         /* If DCB is not enabled then always in single TC */
4554         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4555                 return 1;
4556
4557         /* SFP mode will be enabled for all TCs on port */
4558         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4559                 return i40e_dcb_get_num_tc(dcbcfg);
4560
4561         /* MFP mode return count of enabled TCs for this PF */
4562         if (pf->hw.func_caps.iscsi)
4563                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4564         else
4565                 return 1; /* Only TC0 */
4566
4567         /* At least have TC0 */
4568         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4569         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4570                 if (enabled_tc & BIT(i))
4571                         num_tc++;
4572         }
4573         return num_tc;
4574 }
4575
4576 /**
4577  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4578  * @pf: PF being queried
4579  *
4580  * Return a bitmap for first enabled traffic class for this PF.
4581  **/
4582 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4583 {
4584         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4585         u8 i = 0;
4586
4587         if (!enabled_tc)
4588                 return 0x1; /* TC0 */
4589
4590         /* Find the first enabled TC */
4591         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4592                 if (enabled_tc & BIT(i))
4593                         break;
4594         }
4595
4596         return BIT(i);
4597 }
4598
4599 /**
4600  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4601  * @pf: PF being queried
4602  *
4603  * Return a bitmap for enabled traffic classes for this PF.
4604  **/
4605 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4606 {
4607         /* If DCB is not enabled for this PF then just return default TC */
4608         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4609                 return i40e_pf_get_default_tc(pf);
4610
4611         /* SFP mode we want PF to be enabled for all TCs */
4612         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4613                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4614
4615         /* MFP enabled and iSCSI PF type */
4616         if (pf->hw.func_caps.iscsi)
4617                 return i40e_get_iscsi_tc_map(pf);
4618         else
4619                 return i40e_pf_get_default_tc(pf);
4620 }
4621
4622 /**
4623  * i40e_vsi_get_bw_info - Query VSI BW Information
4624  * @vsi: the VSI being queried
4625  *
4626  * Returns 0 on success, negative value on failure
4627  **/
4628 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4629 {
4630         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4631         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4632         struct i40e_pf *pf = vsi->back;
4633         struct i40e_hw *hw = &pf->hw;
4634         i40e_status ret;
4635         u32 tc_bw_max;
4636         int i;
4637
4638         /* Get the VSI level BW configuration */
4639         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4640         if (ret) {
4641                 dev_info(&pf->pdev->dev,
4642                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4643                          i40e_stat_str(&pf->hw, ret),
4644                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4645                 return -EINVAL;
4646         }
4647
4648         /* Get the VSI level BW configuration per TC */
4649         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4650                                                NULL);
4651         if (ret) {
4652                 dev_info(&pf->pdev->dev,
4653                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4654                          i40e_stat_str(&pf->hw, ret),
4655                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4656                 return -EINVAL;
4657         }
4658
4659         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4660                 dev_info(&pf->pdev->dev,
4661                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4662                          bw_config.tc_valid_bits,
4663                          bw_ets_config.tc_valid_bits);
4664                 /* Still continuing */
4665         }
4666
4667         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4668         vsi->bw_max_quanta = bw_config.max_bw;
4669         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4670                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4671         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4672                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4673                 vsi->bw_ets_limit_credits[i] =
4674                                         le16_to_cpu(bw_ets_config.credits[i]);
4675                 /* 3 bits out of 4 for each TC */
4676                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4677         }
4678
4679         return 0;
4680 }
4681
4682 /**
4683  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4684  * @vsi: the VSI being configured
4685  * @enabled_tc: TC bitmap
4686  * @bw_credits: BW shared credits per TC
4687  *
4688  * Returns 0 on success, negative value on failure
4689  **/
4690 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4691                                        u8 *bw_share)
4692 {
4693         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4694         i40e_status ret;
4695         int i;
4696
4697         bw_data.tc_valid_bits = enabled_tc;
4698         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4699                 bw_data.tc_bw_credits[i] = bw_share[i];
4700
4701         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4702                                        NULL);
4703         if (ret) {
4704                 dev_info(&vsi->back->pdev->dev,
4705                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4706                          vsi->back->hw.aq.asq_last_status);
4707                 return -EINVAL;
4708         }
4709
4710         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4711                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4712
4713         return 0;
4714 }
4715
4716 /**
4717  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4718  * @vsi: the VSI being configured
4719  * @enabled_tc: TC map to be enabled
4720  *
4721  **/
4722 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4723 {
4724         struct net_device *netdev = vsi->netdev;
4725         struct i40e_pf *pf = vsi->back;
4726         struct i40e_hw *hw = &pf->hw;
4727         u8 netdev_tc = 0;
4728         int i;
4729         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4730
4731         if (!netdev)
4732                 return;
4733
4734         if (!enabled_tc) {
4735                 netdev_reset_tc(netdev);
4736                 return;
4737         }
4738
4739         /* Set up actual enabled TCs on the VSI */
4740         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4741                 return;
4742
4743         /* set per TC queues for the VSI */
4744         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4745                 /* Only set TC queues for enabled tcs
4746                  *
4747                  * e.g. For a VSI that has TC0 and TC3 enabled the
4748                  * enabled_tc bitmap would be 0x00001001; the driver
4749                  * will set the numtc for netdev as 2 that will be
4750                  * referenced by the netdev layer as TC 0 and 1.
4751                  */
4752                 if (vsi->tc_config.enabled_tc & BIT(i))
4753                         netdev_set_tc_queue(netdev,
4754                                         vsi->tc_config.tc_info[i].netdev_tc,
4755                                         vsi->tc_config.tc_info[i].qcount,
4756                                         vsi->tc_config.tc_info[i].qoffset);
4757         }
4758
4759         /* Assign UP2TC map for the VSI */
4760         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4761                 /* Get the actual TC# for the UP */
4762                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4763                 /* Get the mapped netdev TC# for the UP */
4764                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4765                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4766         }
4767 }
4768
4769 /**
4770  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4771  * @vsi: the VSI being configured
4772  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4773  **/
4774 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4775                                       struct i40e_vsi_context *ctxt)
4776 {
4777         /* copy just the sections touched not the entire info
4778          * since not all sections are valid as returned by
4779          * update vsi params
4780          */
4781         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4782         memcpy(&vsi->info.queue_mapping,
4783                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4784         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4785                sizeof(vsi->info.tc_mapping));
4786 }
4787
4788 /**
4789  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4790  * @vsi: VSI to be configured
4791  * @enabled_tc: TC bitmap
4792  *
4793  * This configures a particular VSI for TCs that are mapped to the
4794  * given TC bitmap. It uses default bandwidth share for TCs across
4795  * VSIs to configure TC for a particular VSI.
4796  *
4797  * NOTE:
4798  * It is expected that the VSI queues have been quisced before calling
4799  * this function.
4800  **/
4801 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4802 {
4803         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4804         struct i40e_vsi_context ctxt;
4805         int ret = 0;
4806         int i;
4807
4808         /* Check if enabled_tc is same as existing or new TCs */
4809         if (vsi->tc_config.enabled_tc == enabled_tc)
4810                 return ret;
4811
4812         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4813         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4814                 if (enabled_tc & BIT(i))
4815                         bw_share[i] = 1;
4816         }
4817
4818         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4819         if (ret) {
4820                 dev_info(&vsi->back->pdev->dev,
4821                          "Failed configuring TC map %d for VSI %d\n",
4822                          enabled_tc, vsi->seid);
4823                 goto out;
4824         }
4825
4826         /* Update Queue Pairs Mapping for currently enabled UPs */
4827         ctxt.seid = vsi->seid;
4828         ctxt.pf_num = vsi->back->hw.pf_id;
4829         ctxt.vf_num = 0;
4830         ctxt.uplink_seid = vsi->uplink_seid;
4831         ctxt.info = vsi->info;
4832         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4833
4834         /* Update the VSI after updating the VSI queue-mapping information */
4835         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4836         if (ret) {
4837                 dev_info(&vsi->back->pdev->dev,
4838                          "Update vsi tc config failed, err %s aq_err %s\n",
4839                          i40e_stat_str(&vsi->back->hw, ret),
4840                          i40e_aq_str(&vsi->back->hw,
4841                                      vsi->back->hw.aq.asq_last_status));
4842                 goto out;
4843         }
4844         /* update the local VSI info with updated queue map */
4845         i40e_vsi_update_queue_map(vsi, &ctxt);
4846         vsi->info.valid_sections = 0;
4847
4848         /* Update current VSI BW information */
4849         ret = i40e_vsi_get_bw_info(vsi);
4850         if (ret) {
4851                 dev_info(&vsi->back->pdev->dev,
4852                          "Failed updating vsi bw info, err %s aq_err %s\n",
4853                          i40e_stat_str(&vsi->back->hw, ret),
4854                          i40e_aq_str(&vsi->back->hw,
4855                                      vsi->back->hw.aq.asq_last_status));
4856                 goto out;
4857         }
4858
4859         /* Update the netdev TC setup */
4860         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4861 out:
4862         return ret;
4863 }
4864
4865 /**
4866  * i40e_veb_config_tc - Configure TCs for given VEB
4867  * @veb: given VEB
4868  * @enabled_tc: TC bitmap
4869  *
4870  * Configures given TC bitmap for VEB (switching) element
4871  **/
4872 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4873 {
4874         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4875         struct i40e_pf *pf = veb->pf;
4876         int ret = 0;
4877         int i;
4878
4879         /* No TCs or already enabled TCs just return */
4880         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4881                 return ret;
4882
4883         bw_data.tc_valid_bits = enabled_tc;
4884         /* bw_data.absolute_credits is not set (relative) */
4885
4886         /* Enable ETS TCs with equal BW Share for now */
4887         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4888                 if (enabled_tc & BIT(i))
4889                         bw_data.tc_bw_share_credits[i] = 1;
4890         }
4891
4892         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4893                                                    &bw_data, NULL);
4894         if (ret) {
4895                 dev_info(&pf->pdev->dev,
4896                          "VEB bw config failed, err %s aq_err %s\n",
4897                          i40e_stat_str(&pf->hw, ret),
4898                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4899                 goto out;
4900         }
4901
4902         /* Update the BW information */
4903         ret = i40e_veb_get_bw_info(veb);
4904         if (ret) {
4905                 dev_info(&pf->pdev->dev,
4906                          "Failed getting veb bw config, err %s aq_err %s\n",
4907                          i40e_stat_str(&pf->hw, ret),
4908                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4909         }
4910
4911 out:
4912         return ret;
4913 }
4914
4915 #ifdef CONFIG_I40E_DCB
4916 /**
4917  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4918  * @pf: PF struct
4919  *
4920  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4921  * the caller would've quiesce all the VSIs before calling
4922  * this function
4923  **/
4924 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4925 {
4926         u8 tc_map = 0;
4927         int ret;
4928         u8 v;
4929
4930         /* Enable the TCs available on PF to all VEBs */
4931         tc_map = i40e_pf_get_tc_map(pf);
4932         for (v = 0; v < I40E_MAX_VEB; v++) {
4933                 if (!pf->veb[v])
4934                         continue;
4935                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4936                 if (ret) {
4937                         dev_info(&pf->pdev->dev,
4938                                  "Failed configuring TC for VEB seid=%d\n",
4939                                  pf->veb[v]->seid);
4940                         /* Will try to configure as many components */
4941                 }
4942         }
4943
4944         /* Update each VSI */
4945         for (v = 0; v < pf->num_alloc_vsi; v++) {
4946                 if (!pf->vsi[v])
4947                         continue;
4948
4949                 /* - Enable all TCs for the LAN VSI
4950 #ifdef I40E_FCOE
4951                  * - For FCoE VSI only enable the TC configured
4952                  *   as per the APP TLV
4953 #endif
4954                  * - For all others keep them at TC0 for now
4955                  */
4956                 if (v == pf->lan_vsi)
4957                         tc_map = i40e_pf_get_tc_map(pf);
4958                 else
4959                         tc_map = i40e_pf_get_default_tc(pf);
4960 #ifdef I40E_FCOE
4961                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4962                         tc_map = i40e_get_fcoe_tc_map(pf);
4963 #endif /* #ifdef I40E_FCOE */
4964
4965                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4966                 if (ret) {
4967                         dev_info(&pf->pdev->dev,
4968                                  "Failed configuring TC for VSI seid=%d\n",
4969                                  pf->vsi[v]->seid);
4970                         /* Will try to configure as many components */
4971                 } else {
4972                         /* Re-configure VSI vectors based on updated TC map */
4973                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4974                         if (pf->vsi[v]->netdev)
4975                                 i40e_dcbnl_set_all(pf->vsi[v]);
4976                 }
4977         }
4978 }
4979
4980 /**
4981  * i40e_resume_port_tx - Resume port Tx
4982  * @pf: PF struct
4983  *
4984  * Resume a port's Tx and issue a PF reset in case of failure to
4985  * resume.
4986  **/
4987 static int i40e_resume_port_tx(struct i40e_pf *pf)
4988 {
4989         struct i40e_hw *hw = &pf->hw;
4990         int ret;
4991
4992         ret = i40e_aq_resume_port_tx(hw, NULL);
4993         if (ret) {
4994                 dev_info(&pf->pdev->dev,
4995                          "Resume Port Tx failed, err %s aq_err %s\n",
4996                           i40e_stat_str(&pf->hw, ret),
4997                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4998                 /* Schedule PF reset to recover */
4999                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5000                 i40e_service_event_schedule(pf);
5001         }
5002
5003         return ret;
5004 }
5005
5006 /**
5007  * i40e_init_pf_dcb - Initialize DCB configuration
5008  * @pf: PF being configured
5009  *
5010  * Query the current DCB configuration and cache it
5011  * in the hardware structure
5012  **/
5013 static int i40e_init_pf_dcb(struct i40e_pf *pf)
5014 {
5015         struct i40e_hw *hw = &pf->hw;
5016         int err = 0;
5017
5018         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
5019         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
5020             (pf->hw.aq.fw_maj_ver < 4))
5021                 goto out;
5022
5023         /* Get the initial DCB configuration */
5024         err = i40e_init_dcb(hw);
5025         if (!err) {
5026                 /* Device/Function is not DCBX capable */
5027                 if ((!hw->func_caps.dcb) ||
5028                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
5029                         dev_info(&pf->pdev->dev,
5030                                  "DCBX offload is not supported or is disabled for this PF.\n");
5031
5032                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
5033                                 goto out;
5034
5035                 } else {
5036                         /* When status is not DISABLED then DCBX in FW */
5037                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
5038                                        DCB_CAP_DCBX_VER_IEEE;
5039
5040                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
5041                         /* Enable DCB tagging only when more than one TC */
5042                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5043                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5044                         dev_dbg(&pf->pdev->dev,
5045                                 "DCBX offload is supported for this PF.\n");
5046                 }
5047         } else {
5048                 dev_info(&pf->pdev->dev,
5049                          "Query for DCB configuration failed, err %s aq_err %s\n",
5050                          i40e_stat_str(&pf->hw, err),
5051                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5052         }
5053
5054 out:
5055         return err;
5056 }
5057 #endif /* CONFIG_I40E_DCB */
5058 #define SPEED_SIZE 14
5059 #define FC_SIZE 8
5060 /**
5061  * i40e_print_link_message - print link up or down
5062  * @vsi: the VSI for which link needs a message
5063  */
5064 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
5065 {
5066         char *speed = "Unknown";
5067         char *fc = "Unknown";
5068
5069         if (vsi->current_isup == isup)
5070                 return;
5071         vsi->current_isup = isup;
5072         if (!isup) {
5073                 netdev_info(vsi->netdev, "NIC Link is Down\n");
5074                 return;
5075         }
5076
5077         /* Warn user if link speed on NPAR enabled partition is not at
5078          * least 10GB
5079          */
5080         if (vsi->back->hw.func_caps.npar_enable &&
5081             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
5082              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
5083                 netdev_warn(vsi->netdev,
5084                             "The partition detected link speed that is less than 10Gbps\n");
5085
5086         switch (vsi->back->hw.phy.link_info.link_speed) {
5087         case I40E_LINK_SPEED_40GB:
5088                 speed = "40 G";
5089                 break;
5090         case I40E_LINK_SPEED_20GB:
5091                 speed = "20 G";
5092                 break;
5093         case I40E_LINK_SPEED_10GB:
5094                 speed = "10 G";
5095                 break;
5096         case I40E_LINK_SPEED_1GB:
5097                 speed = "1000 M";
5098                 break;
5099         case I40E_LINK_SPEED_100MB:
5100                 speed = "100 M";
5101                 break;
5102         default:
5103                 break;
5104         }
5105
5106         switch (vsi->back->hw.fc.current_mode) {
5107         case I40E_FC_FULL:
5108                 fc = "RX/TX";
5109                 break;
5110         case I40E_FC_TX_PAUSE:
5111                 fc = "TX";
5112                 break;
5113         case I40E_FC_RX_PAUSE:
5114                 fc = "RX";
5115                 break;
5116         default:
5117                 fc = "None";
5118                 break;
5119         }
5120
5121         netdev_info(vsi->netdev, "NIC Link is Up %sbps Full Duplex, Flow Control: %s\n",
5122                     speed, fc);
5123 }
5124
5125 /**
5126  * i40e_up_complete - Finish the last steps of bringing up a connection
5127  * @vsi: the VSI being configured
5128  **/
5129 static int i40e_up_complete(struct i40e_vsi *vsi)
5130 {
5131         struct i40e_pf *pf = vsi->back;
5132         int err;
5133
5134         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5135                 i40e_vsi_configure_msix(vsi);
5136         else
5137                 i40e_configure_msi_and_legacy(vsi);
5138
5139         /* start rings */
5140         err = i40e_vsi_control_rings(vsi, true);
5141         if (err)
5142                 return err;
5143
5144         clear_bit(__I40E_DOWN, &vsi->state);
5145         i40e_napi_enable_all(vsi);
5146         i40e_vsi_enable_irq(vsi);
5147
5148         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
5149             (vsi->netdev)) {
5150                 i40e_print_link_message(vsi, true);
5151                 netif_tx_start_all_queues(vsi->netdev);
5152                 netif_carrier_on(vsi->netdev);
5153         } else if (vsi->netdev) {
5154                 i40e_print_link_message(vsi, false);
5155                 /* need to check for qualified module here*/
5156                 if ((pf->hw.phy.link_info.link_info &
5157                         I40E_AQ_MEDIA_AVAILABLE) &&
5158                     (!(pf->hw.phy.link_info.an_info &
5159                         I40E_AQ_QUALIFIED_MODULE)))
5160                         netdev_err(vsi->netdev,
5161                                    "the driver failed to link because an unqualified module was detected.");
5162         }
5163
5164         /* replay FDIR SB filters */
5165         if (vsi->type == I40E_VSI_FDIR) {
5166                 /* reset fd counters */
5167                 pf->fd_add_err = pf->fd_atr_cnt = 0;
5168                 if (pf->fd_tcp_rule > 0) {
5169                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5170                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5171                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
5172                         pf->fd_tcp_rule = 0;
5173                 }
5174                 i40e_fdir_filter_restore(vsi);
5175         }
5176         i40e_service_event_schedule(pf);
5177
5178         return 0;
5179 }
5180
5181 /**
5182  * i40e_vsi_reinit_locked - Reset the VSI
5183  * @vsi: the VSI being configured
5184  *
5185  * Rebuild the ring structs after some configuration
5186  * has changed, e.g. MTU size.
5187  **/
5188 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
5189 {
5190         struct i40e_pf *pf = vsi->back;
5191
5192         WARN_ON(in_interrupt());
5193         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
5194                 usleep_range(1000, 2000);
5195         i40e_down(vsi);
5196
5197         /* Give a VF some time to respond to the reset.  The
5198          * two second wait is based upon the watchdog cycle in
5199          * the VF driver.
5200          */
5201         if (vsi->type == I40E_VSI_SRIOV)
5202                 msleep(2000);
5203         i40e_up(vsi);
5204         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
5205 }
5206
5207 /**
5208  * i40e_up - Bring the connection back up after being down
5209  * @vsi: the VSI being configured
5210  **/
5211 int i40e_up(struct i40e_vsi *vsi)
5212 {
5213         int err;
5214
5215         err = i40e_vsi_configure(vsi);
5216         if (!err)
5217                 err = i40e_up_complete(vsi);
5218
5219         return err;
5220 }
5221
5222 /**
5223  * i40e_down - Shutdown the connection processing
5224  * @vsi: the VSI being stopped
5225  **/
5226 void i40e_down(struct i40e_vsi *vsi)
5227 {
5228         int i;
5229
5230         /* It is assumed that the caller of this function
5231          * sets the vsi->state __I40E_DOWN bit.
5232          */
5233         if (vsi->netdev) {
5234                 netif_carrier_off(vsi->netdev);
5235                 netif_tx_disable(vsi->netdev);
5236         }
5237         i40e_vsi_disable_irq(vsi);
5238         i40e_vsi_control_rings(vsi, false);
5239         i40e_napi_disable_all(vsi);
5240
5241         for (i = 0; i < vsi->num_queue_pairs; i++) {
5242                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5243                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5244         }
5245 }
5246
5247 /**
5248  * i40e_setup_tc - configure multiple traffic classes
5249  * @netdev: net device to configure
5250  * @tc: number of traffic classes to enable
5251  **/
5252 #ifdef I40E_FCOE
5253 int i40e_setup_tc(struct net_device *netdev, u8 tc)
5254 #else
5255 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5256 #endif
5257 {
5258         struct i40e_netdev_priv *np = netdev_priv(netdev);
5259         struct i40e_vsi *vsi = np->vsi;
5260         struct i40e_pf *pf = vsi->back;
5261         u8 enabled_tc = 0;
5262         int ret = -EINVAL;
5263         int i;
5264
5265         /* Check if DCB enabled to continue */
5266         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5267                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5268                 goto exit;
5269         }
5270
5271         /* Check if MFP enabled */
5272         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5273                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5274                 goto exit;
5275         }
5276
5277         /* Check whether tc count is within enabled limit */
5278         if (tc > i40e_pf_get_num_tc(pf)) {
5279                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5280                 goto exit;
5281         }
5282
5283         /* Generate TC map for number of tc requested */
5284         for (i = 0; i < tc; i++)
5285                 enabled_tc |= BIT(i);
5286
5287         /* Requesting same TC configuration as already enabled */
5288         if (enabled_tc == vsi->tc_config.enabled_tc)
5289                 return 0;
5290
5291         /* Quiesce VSI queues */
5292         i40e_quiesce_vsi(vsi);
5293
5294         /* Configure VSI for enabled TCs */
5295         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5296         if (ret) {
5297                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5298                             vsi->seid);
5299                 goto exit;
5300         }
5301
5302         /* Unquiesce VSI */
5303         i40e_unquiesce_vsi(vsi);
5304
5305 exit:
5306         return ret;
5307 }
5308
5309 /**
5310  * i40e_open - Called when a network interface is made active
5311  * @netdev: network interface device structure
5312  *
5313  * The open entry point is called when a network interface is made
5314  * active by the system (IFF_UP).  At this point all resources needed
5315  * for transmit and receive operations are allocated, the interrupt
5316  * handler is registered with the OS, the netdev watchdog subtask is
5317  * enabled, and the stack is notified that the interface is ready.
5318  *
5319  * Returns 0 on success, negative value on failure
5320  **/
5321 int i40e_open(struct net_device *netdev)
5322 {
5323         struct i40e_netdev_priv *np = netdev_priv(netdev);
5324         struct i40e_vsi *vsi = np->vsi;
5325         struct i40e_pf *pf = vsi->back;
5326         int err;
5327
5328         /* disallow open during test or if eeprom is broken */
5329         if (test_bit(__I40E_TESTING, &pf->state) ||
5330             test_bit(__I40E_BAD_EEPROM, &pf->state))
5331                 return -EBUSY;
5332
5333         netif_carrier_off(netdev);
5334
5335         err = i40e_vsi_open(vsi);
5336         if (err)
5337                 return err;
5338
5339         /* configure global TSO hardware offload settings */
5340         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5341                                                        TCP_FLAG_FIN) >> 16);
5342         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5343                                                        TCP_FLAG_FIN |
5344                                                        TCP_FLAG_CWR) >> 16);
5345         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5346
5347 #ifdef CONFIG_I40E_VXLAN
5348         vxlan_get_rx_port(netdev);
5349 #endif
5350 #ifdef CONFIG_I40E_GENEVE
5351         geneve_get_rx_port(netdev);
5352 #endif
5353
5354         return 0;
5355 }
5356
5357 /**
5358  * i40e_vsi_open -
5359  * @vsi: the VSI to open
5360  *
5361  * Finish initialization of the VSI.
5362  *
5363  * Returns 0 on success, negative value on failure
5364  **/
5365 int i40e_vsi_open(struct i40e_vsi *vsi)
5366 {
5367         struct i40e_pf *pf = vsi->back;
5368         char int_name[I40E_INT_NAME_STR_LEN];
5369         int err;
5370
5371         /* allocate descriptors */
5372         err = i40e_vsi_setup_tx_resources(vsi);
5373         if (err)
5374                 goto err_setup_tx;
5375         err = i40e_vsi_setup_rx_resources(vsi);
5376         if (err)
5377                 goto err_setup_rx;
5378
5379         err = i40e_vsi_configure(vsi);
5380         if (err)
5381                 goto err_setup_rx;
5382
5383         if (vsi->netdev) {
5384                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5385                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5386                 err = i40e_vsi_request_irq(vsi, int_name);
5387                 if (err)
5388                         goto err_setup_rx;
5389
5390                 /* Notify the stack of the actual queue counts. */
5391                 err = netif_set_real_num_tx_queues(vsi->netdev,
5392                                                    vsi->num_queue_pairs);
5393                 if (err)
5394                         goto err_set_queues;
5395
5396                 err = netif_set_real_num_rx_queues(vsi->netdev,
5397                                                    vsi->num_queue_pairs);
5398                 if (err)
5399                         goto err_set_queues;
5400
5401         } else if (vsi->type == I40E_VSI_FDIR) {
5402                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5403                          dev_driver_string(&pf->pdev->dev),
5404                          dev_name(&pf->pdev->dev));
5405                 err = i40e_vsi_request_irq(vsi, int_name);
5406
5407         } else {
5408                 err = -EINVAL;
5409                 goto err_setup_rx;
5410         }
5411
5412         err = i40e_up_complete(vsi);
5413         if (err)
5414                 goto err_up_complete;
5415
5416         return 0;
5417
5418 err_up_complete:
5419         i40e_down(vsi);
5420 err_set_queues:
5421         i40e_vsi_free_irq(vsi);
5422 err_setup_rx:
5423         i40e_vsi_free_rx_resources(vsi);
5424 err_setup_tx:
5425         i40e_vsi_free_tx_resources(vsi);
5426         if (vsi == pf->vsi[pf->lan_vsi])
5427                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5428
5429         return err;
5430 }
5431
5432 /**
5433  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5434  * @pf: Pointer to PF
5435  *
5436  * This function destroys the hlist where all the Flow Director
5437  * filters were saved.
5438  **/
5439 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5440 {
5441         struct i40e_fdir_filter *filter;
5442         struct hlist_node *node2;
5443
5444         hlist_for_each_entry_safe(filter, node2,
5445                                   &pf->fdir_filter_list, fdir_node) {
5446                 hlist_del(&filter->fdir_node);
5447                 kfree(filter);
5448         }
5449         pf->fdir_pf_active_filters = 0;
5450 }
5451
5452 /**
5453  * i40e_close - Disables a network interface
5454  * @netdev: network interface device structure
5455  *
5456  * The close entry point is called when an interface is de-activated
5457  * by the OS.  The hardware is still under the driver's control, but
5458  * this netdev interface is disabled.
5459  *
5460  * Returns 0, this is not allowed to fail
5461  **/
5462 #ifdef I40E_FCOE
5463 int i40e_close(struct net_device *netdev)
5464 #else
5465 static int i40e_close(struct net_device *netdev)
5466 #endif
5467 {
5468         struct i40e_netdev_priv *np = netdev_priv(netdev);
5469         struct i40e_vsi *vsi = np->vsi;
5470
5471         i40e_vsi_close(vsi);
5472
5473         return 0;
5474 }
5475
5476 /**
5477  * i40e_do_reset - Start a PF or Core Reset sequence
5478  * @pf: board private structure
5479  * @reset_flags: which reset is requested
5480  *
5481  * The essential difference in resets is that the PF Reset
5482  * doesn't clear the packet buffers, doesn't reset the PE
5483  * firmware, and doesn't bother the other PFs on the chip.
5484  **/
5485 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5486 {
5487         u32 val;
5488
5489         WARN_ON(in_interrupt());
5490
5491         if (i40e_check_asq_alive(&pf->hw))
5492                 i40e_vc_notify_reset(pf);
5493
5494         /* do the biggest reset indicated */
5495         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5496
5497                 /* Request a Global Reset
5498                  *
5499                  * This will start the chip's countdown to the actual full
5500                  * chip reset event, and a warning interrupt to be sent
5501                  * to all PFs, including the requestor.  Our handler
5502                  * for the warning interrupt will deal with the shutdown
5503                  * and recovery of the switch setup.
5504                  */
5505                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5506                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5507                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5508                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5509
5510         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5511
5512                 /* Request a Core Reset
5513                  *
5514                  * Same as Global Reset, except does *not* include the MAC/PHY
5515                  */
5516                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5517                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5518                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5519                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5520                 i40e_flush(&pf->hw);
5521
5522         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5523
5524                 /* Request a PF Reset
5525                  *
5526                  * Resets only the PF-specific registers
5527                  *
5528                  * This goes directly to the tear-down and rebuild of
5529                  * the switch, since we need to do all the recovery as
5530                  * for the Core Reset.
5531                  */
5532                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5533                 i40e_handle_reset_warning(pf);
5534
5535         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5536                 int v;
5537
5538                 /* Find the VSI(s) that requested a re-init */
5539                 dev_info(&pf->pdev->dev,
5540                          "VSI reinit requested\n");
5541                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5542                         struct i40e_vsi *vsi = pf->vsi[v];
5543
5544                         if (vsi != NULL &&
5545                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5546                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5547                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5548                         }
5549                 }
5550         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5551                 int v;
5552
5553                 /* Find the VSI(s) that needs to be brought down */
5554                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5555                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5556                         struct i40e_vsi *vsi = pf->vsi[v];
5557
5558                         if (vsi != NULL &&
5559                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5560                                 set_bit(__I40E_DOWN, &vsi->state);
5561                                 i40e_down(vsi);
5562                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5563                         }
5564                 }
5565         } else {
5566                 dev_info(&pf->pdev->dev,
5567                          "bad reset request 0x%08x\n", reset_flags);
5568         }
5569 }
5570
5571 #ifdef CONFIG_I40E_DCB
5572 /**
5573  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5574  * @pf: board private structure
5575  * @old_cfg: current DCB config
5576  * @new_cfg: new DCB config
5577  **/
5578 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5579                             struct i40e_dcbx_config *old_cfg,
5580                             struct i40e_dcbx_config *new_cfg)
5581 {
5582         bool need_reconfig = false;
5583
5584         /* Check if ETS configuration has changed */
5585         if (memcmp(&new_cfg->etscfg,
5586                    &old_cfg->etscfg,
5587                    sizeof(new_cfg->etscfg))) {
5588                 /* If Priority Table has changed reconfig is needed */
5589                 if (memcmp(&new_cfg->etscfg.prioritytable,
5590                            &old_cfg->etscfg.prioritytable,
5591                            sizeof(new_cfg->etscfg.prioritytable))) {
5592                         need_reconfig = true;
5593                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5594                 }
5595
5596                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5597                            &old_cfg->etscfg.tcbwtable,
5598                            sizeof(new_cfg->etscfg.tcbwtable)))
5599                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5600
5601                 if (memcmp(&new_cfg->etscfg.tsatable,
5602                            &old_cfg->etscfg.tsatable,
5603                            sizeof(new_cfg->etscfg.tsatable)))
5604                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5605         }
5606
5607         /* Check if PFC configuration has changed */
5608         if (memcmp(&new_cfg->pfc,
5609                    &old_cfg->pfc,
5610                    sizeof(new_cfg->pfc))) {
5611                 need_reconfig = true;
5612                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5613         }
5614
5615         /* Check if APP Table has changed */
5616         if (memcmp(&new_cfg->app,
5617                    &old_cfg->app,
5618                    sizeof(new_cfg->app))) {
5619                 need_reconfig = true;
5620                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5621         }
5622
5623         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5624         return need_reconfig;
5625 }
5626
5627 /**
5628  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5629  * @pf: board private structure
5630  * @e: event info posted on ARQ
5631  **/
5632 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5633                                   struct i40e_arq_event_info *e)
5634 {
5635         struct i40e_aqc_lldp_get_mib *mib =
5636                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5637         struct i40e_hw *hw = &pf->hw;
5638         struct i40e_dcbx_config tmp_dcbx_cfg;
5639         bool need_reconfig = false;
5640         int ret = 0;
5641         u8 type;
5642
5643         /* Not DCB capable or capability disabled */
5644         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5645                 return ret;
5646
5647         /* Ignore if event is not for Nearest Bridge */
5648         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5649                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5650         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5651         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5652                 return ret;
5653
5654         /* Check MIB Type and return if event for Remote MIB update */
5655         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5656         dev_dbg(&pf->pdev->dev,
5657                 "LLDP event mib type %s\n", type ? "remote" : "local");
5658         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5659                 /* Update the remote cached instance and return */
5660                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5661                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5662                                 &hw->remote_dcbx_config);
5663                 goto exit;
5664         }
5665
5666         /* Store the old configuration */
5667         tmp_dcbx_cfg = hw->local_dcbx_config;
5668
5669         /* Reset the old DCBx configuration data */
5670         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5671         /* Get updated DCBX data from firmware */
5672         ret = i40e_get_dcb_config(&pf->hw);
5673         if (ret) {
5674                 dev_info(&pf->pdev->dev,
5675                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5676                          i40e_stat_str(&pf->hw, ret),
5677                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5678                 goto exit;
5679         }
5680
5681         /* No change detected in DCBX configs */
5682         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5683                     sizeof(tmp_dcbx_cfg))) {
5684                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5685                 goto exit;
5686         }
5687
5688         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5689                                                &hw->local_dcbx_config);
5690
5691         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5692
5693         if (!need_reconfig)
5694                 goto exit;
5695
5696         /* Enable DCB tagging only when more than one TC */
5697         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5698                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5699         else
5700                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5701
5702         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5703         /* Reconfiguration needed quiesce all VSIs */
5704         i40e_pf_quiesce_all_vsi(pf);
5705
5706         /* Changes in configuration update VEB/VSI */
5707         i40e_dcb_reconfigure(pf);
5708
5709         ret = i40e_resume_port_tx(pf);
5710
5711         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5712         /* In case of error no point in resuming VSIs */
5713         if (ret)
5714                 goto exit;
5715
5716         /* Wait for the PF's Tx queues to be disabled */
5717         ret = i40e_pf_wait_txq_disabled(pf);
5718         if (ret) {
5719                 /* Schedule PF reset to recover */
5720                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5721                 i40e_service_event_schedule(pf);
5722         } else {
5723                 i40e_pf_unquiesce_all_vsi(pf);
5724         }
5725
5726 exit:
5727         return ret;
5728 }
5729 #endif /* CONFIG_I40E_DCB */
5730
5731 /**
5732  * i40e_do_reset_safe - Protected reset path for userland calls.
5733  * @pf: board private structure
5734  * @reset_flags: which reset is requested
5735  *
5736  **/
5737 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5738 {
5739         rtnl_lock();
5740         i40e_do_reset(pf, reset_flags);
5741         rtnl_unlock();
5742 }
5743
5744 /**
5745  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5746  * @pf: board private structure
5747  * @e: event info posted on ARQ
5748  *
5749  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5750  * and VF queues
5751  **/
5752 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5753                                            struct i40e_arq_event_info *e)
5754 {
5755         struct i40e_aqc_lan_overflow *data =
5756                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5757         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5758         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5759         struct i40e_hw *hw = &pf->hw;
5760         struct i40e_vf *vf;
5761         u16 vf_id;
5762
5763         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5764                 queue, qtx_ctl);
5765
5766         /* Queue belongs to VF, find the VF and issue VF reset */
5767         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5768             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5769                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5770                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5771                 vf_id -= hw->func_caps.vf_base_id;
5772                 vf = &pf->vf[vf_id];
5773                 i40e_vc_notify_vf_reset(vf);
5774                 /* Allow VF to process pending reset notification */
5775                 msleep(20);
5776                 i40e_reset_vf(vf, false);
5777         }
5778 }
5779
5780 /**
5781  * i40e_service_event_complete - Finish up the service event
5782  * @pf: board private structure
5783  **/
5784 static void i40e_service_event_complete(struct i40e_pf *pf)
5785 {
5786         WARN_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5787
5788         /* flush memory to make sure state is correct before next watchog */
5789         smp_mb__before_atomic();
5790         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5791 }
5792
5793 /**
5794  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5795  * @pf: board private structure
5796  **/
5797 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5798 {
5799         u32 val, fcnt_prog;
5800
5801         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5802         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5803         return fcnt_prog;
5804 }
5805
5806 /**
5807  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5808  * @pf: board private structure
5809  **/
5810 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5811 {
5812         u32 val, fcnt_prog;
5813
5814         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5815         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5816                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5817                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5818         return fcnt_prog;
5819 }
5820
5821 /**
5822  * i40e_get_global_fd_count - Get total FD filters programmed on device
5823  * @pf: board private structure
5824  **/
5825 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5826 {
5827         u32 val, fcnt_prog;
5828
5829         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5830         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5831                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5832                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5833         return fcnt_prog;
5834 }
5835
5836 /**
5837  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5838  * @pf: board private structure
5839  **/
5840 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5841 {
5842         struct i40e_fdir_filter *filter;
5843         u32 fcnt_prog, fcnt_avail;
5844         struct hlist_node *node;
5845
5846         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5847                 return;
5848
5849         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5850          * to re-enable
5851          */
5852         fcnt_prog = i40e_get_global_fd_count(pf);
5853         fcnt_avail = pf->fdir_pf_filter_count;
5854         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5855             (pf->fd_add_err == 0) ||
5856             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5857                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5858                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5859                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5860                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5861                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5862                 }
5863         }
5864         /* Wait for some more space to be available to turn on ATR */
5865         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5866                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5867                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5868                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5869                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5870                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5871                 }
5872         }
5873
5874         /* if hw had a problem adding a filter, delete it */
5875         if (pf->fd_inv > 0) {
5876                 hlist_for_each_entry_safe(filter, node,
5877                                           &pf->fdir_filter_list, fdir_node) {
5878                         if (filter->fd_id == pf->fd_inv) {
5879                                 hlist_del(&filter->fdir_node);
5880                                 kfree(filter);
5881                                 pf->fdir_pf_active_filters--;
5882                         }
5883                 }
5884         }
5885 }
5886
5887 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5888 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5889 /**
5890  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5891  * @pf: board private structure
5892  **/
5893 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5894 {
5895         unsigned long min_flush_time;
5896         int flush_wait_retry = 50;
5897         bool disable_atr = false;
5898         int fd_room;
5899         int reg;
5900
5901         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5902                 return;
5903
5904         if (!time_after(jiffies, pf->fd_flush_timestamp +
5905                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
5906                 return;
5907
5908         /* If the flush is happening too quick and we have mostly SB rules we
5909          * should not re-enable ATR for some time.
5910          */
5911         min_flush_time = pf->fd_flush_timestamp +
5912                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5913         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5914
5915         if (!(time_after(jiffies, min_flush_time)) &&
5916             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5917                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5918                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5919                 disable_atr = true;
5920         }
5921
5922         pf->fd_flush_timestamp = jiffies;
5923         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5924         /* flush all filters */
5925         wr32(&pf->hw, I40E_PFQF_CTL_1,
5926              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5927         i40e_flush(&pf->hw);
5928         pf->fd_flush_cnt++;
5929         pf->fd_add_err = 0;
5930         do {
5931                 /* Check FD flush status every 5-6msec */
5932                 usleep_range(5000, 6000);
5933                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5934                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5935                         break;
5936         } while (flush_wait_retry--);
5937         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5938                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5939         } else {
5940                 /* replay sideband filters */
5941                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5942                 if (!disable_atr)
5943                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5944                 clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5945                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5946                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5947         }
5948
5949 }
5950
5951 /**
5952  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5953  * @pf: board private structure
5954  **/
5955 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5956 {
5957         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5958 }
5959
5960 /* We can see up to 256 filter programming desc in transit if the filters are
5961  * being applied really fast; before we see the first
5962  * filter miss error on Rx queue 0. Accumulating enough error messages before
5963  * reacting will make sure we don't cause flush too often.
5964  */
5965 #define I40E_MAX_FD_PROGRAM_ERROR 256
5966
5967 /**
5968  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5969  * @pf: board private structure
5970  **/
5971 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5972 {
5973
5974         /* if interface is down do nothing */
5975         if (test_bit(__I40E_DOWN, &pf->state))
5976                 return;
5977
5978         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5979                 return;
5980
5981         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5982                 i40e_fdir_flush_and_replay(pf);
5983
5984         i40e_fdir_check_and_reenable(pf);
5985
5986 }
5987
5988 /**
5989  * i40e_vsi_link_event - notify VSI of a link event
5990  * @vsi: vsi to be notified
5991  * @link_up: link up or down
5992  **/
5993 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5994 {
5995         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5996                 return;
5997
5998         switch (vsi->type) {
5999         case I40E_VSI_MAIN:
6000 #ifdef I40E_FCOE
6001         case I40E_VSI_FCOE:
6002 #endif
6003                 if (!vsi->netdev || !vsi->netdev_registered)
6004                         break;
6005
6006                 if (link_up) {
6007                         netif_carrier_on(vsi->netdev);
6008                         netif_tx_wake_all_queues(vsi->netdev);
6009                 } else {
6010                         netif_carrier_off(vsi->netdev);
6011                         netif_tx_stop_all_queues(vsi->netdev);
6012                 }
6013                 break;
6014
6015         case I40E_VSI_SRIOV:
6016         case I40E_VSI_VMDQ2:
6017         case I40E_VSI_CTRL:
6018         case I40E_VSI_MIRROR:
6019         default:
6020                 /* there is no notification for other VSIs */
6021                 break;
6022         }
6023 }
6024
6025 /**
6026  * i40e_veb_link_event - notify elements on the veb of a link event
6027  * @veb: veb to be notified
6028  * @link_up: link up or down
6029  **/
6030 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
6031 {
6032         struct i40e_pf *pf;
6033         int i;
6034
6035         if (!veb || !veb->pf)
6036                 return;
6037         pf = veb->pf;
6038
6039         /* depth first... */
6040         for (i = 0; i < I40E_MAX_VEB; i++)
6041                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
6042                         i40e_veb_link_event(pf->veb[i], link_up);
6043
6044         /* ... now the local VSIs */
6045         for (i = 0; i < pf->num_alloc_vsi; i++)
6046                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
6047                         i40e_vsi_link_event(pf->vsi[i], link_up);
6048 }
6049
6050 /**
6051  * i40e_link_event - Update netif_carrier status
6052  * @pf: board private structure
6053  **/
6054 static void i40e_link_event(struct i40e_pf *pf)
6055 {
6056         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6057         u8 new_link_speed, old_link_speed;
6058         i40e_status status;
6059         bool new_link, old_link;
6060
6061         /* save off old link status information */
6062         pf->hw.phy.link_info_old = pf->hw.phy.link_info;
6063
6064         /* set this to force the get_link_status call to refresh state */
6065         pf->hw.phy.get_link_info = true;
6066
6067         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
6068
6069         status = i40e_get_link_status(&pf->hw, &new_link);
6070         if (status) {
6071                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
6072                         status);
6073                 return;
6074         }
6075
6076         old_link_speed = pf->hw.phy.link_info_old.link_speed;
6077         new_link_speed = pf->hw.phy.link_info.link_speed;
6078
6079         if (new_link == old_link &&
6080             new_link_speed == old_link_speed &&
6081             (test_bit(__I40E_DOWN, &vsi->state) ||
6082              new_link == netif_carrier_ok(vsi->netdev)))
6083                 return;
6084
6085         if (!test_bit(__I40E_DOWN, &vsi->state))
6086                 i40e_print_link_message(vsi, new_link);
6087
6088         /* Notify the base of the switch tree connected to
6089          * the link.  Floating VEBs are not notified.
6090          */
6091         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
6092                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
6093         else
6094                 i40e_vsi_link_event(vsi, new_link);
6095
6096         if (pf->vf)
6097                 i40e_vc_notify_link_state(pf);
6098
6099         if (pf->flags & I40E_FLAG_PTP)
6100                 i40e_ptp_set_increment(pf);
6101 }
6102
6103 /**
6104  * i40e_watchdog_subtask - periodic checks not using event driven response
6105  * @pf: board private structure
6106  **/
6107 static void i40e_watchdog_subtask(struct i40e_pf *pf)
6108 {
6109         int i;
6110
6111         /* if interface is down do nothing */
6112         if (test_bit(__I40E_DOWN, &pf->state) ||
6113             test_bit(__I40E_CONFIG_BUSY, &pf->state))
6114                 return;
6115
6116         /* make sure we don't do these things too often */
6117         if (time_before(jiffies, (pf->service_timer_previous +
6118                                   pf->service_timer_period)))
6119                 return;
6120         pf->service_timer_previous = jiffies;
6121
6122         if (pf->flags & I40E_FLAG_LINK_POLLING_ENABLED)
6123                 i40e_link_event(pf);
6124
6125         /* Update the stats for active netdevs so the network stack
6126          * can look at updated numbers whenever it cares to
6127          */
6128         for (i = 0; i < pf->num_alloc_vsi; i++)
6129                 if (pf->vsi[i] && pf->vsi[i]->netdev)
6130                         i40e_update_stats(pf->vsi[i]);
6131
6132         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
6133                 /* Update the stats for the active switching components */
6134                 for (i = 0; i < I40E_MAX_VEB; i++)
6135                         if (pf->veb[i])
6136                                 i40e_update_veb_stats(pf->veb[i]);
6137         }
6138
6139         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
6140 }
6141
6142 /**
6143  * i40e_reset_subtask - Set up for resetting the device and driver
6144  * @pf: board private structure
6145  **/
6146 static void i40e_reset_subtask(struct i40e_pf *pf)
6147 {
6148         u32 reset_flags = 0;
6149
6150         rtnl_lock();
6151         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
6152                 reset_flags |= BIT(__I40E_REINIT_REQUESTED);
6153                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
6154         }
6155         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
6156                 reset_flags |= BIT(__I40E_PF_RESET_REQUESTED);
6157                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6158         }
6159         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
6160                 reset_flags |= BIT(__I40E_CORE_RESET_REQUESTED);
6161                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
6162         }
6163         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
6164                 reset_flags |= BIT(__I40E_GLOBAL_RESET_REQUESTED);
6165                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
6166         }
6167         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
6168                 reset_flags |= BIT(__I40E_DOWN_REQUESTED);
6169                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
6170         }
6171
6172         /* If there's a recovery already waiting, it takes
6173          * precedence before starting a new reset sequence.
6174          */
6175         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
6176                 i40e_handle_reset_warning(pf);
6177                 goto unlock;
6178         }
6179
6180         /* If we're already down or resetting, just bail */
6181         if (reset_flags &&
6182             !test_bit(__I40E_DOWN, &pf->state) &&
6183             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
6184                 i40e_do_reset(pf, reset_flags);
6185
6186 unlock:
6187         rtnl_unlock();
6188 }
6189
6190 /**
6191  * i40e_handle_link_event - Handle link event
6192  * @pf: board private structure
6193  * @e: event info posted on ARQ
6194  **/
6195 static void i40e_handle_link_event(struct i40e_pf *pf,
6196                                    struct i40e_arq_event_info *e)
6197 {
6198         struct i40e_aqc_get_link_status *status =
6199                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
6200
6201         /* Do a new status request to re-enable LSE reporting
6202          * and load new status information into the hw struct
6203          * This completely ignores any state information
6204          * in the ARQ event info, instead choosing to always
6205          * issue the AQ update link status command.
6206          */
6207         i40e_link_event(pf);
6208
6209         /* check for unqualified module, if link is down */
6210         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
6211             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
6212             (!(status->link_info & I40E_AQ_LINK_UP)))
6213                 dev_err(&pf->pdev->dev,
6214                         "The driver failed to link because an unqualified module was detected.\n");
6215 }
6216
6217 /**
6218  * i40e_clean_adminq_subtask - Clean the AdminQ rings
6219  * @pf: board private structure
6220  **/
6221 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6222 {
6223         struct i40e_arq_event_info event;
6224         struct i40e_hw *hw = &pf->hw;
6225         u16 pending, i = 0;
6226         i40e_status ret;
6227         u16 opcode;
6228         u32 oldval;
6229         u32 val;
6230
6231         /* Do not run clean AQ when PF reset fails */
6232         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6233                 return;
6234
6235         /* check for error indications */
6236         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6237         oldval = val;
6238         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6239                 if (hw->debug_mask & I40E_DEBUG_AQ)
6240                         dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6241                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6242         }
6243         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6244                 if (hw->debug_mask & I40E_DEBUG_AQ)
6245                         dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6246                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6247         }
6248         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6249                 if (hw->debug_mask & I40E_DEBUG_AQ)
6250                         dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6251                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6252         }
6253         if (oldval != val)
6254                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6255
6256         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6257         oldval = val;
6258         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6259                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6260                         dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6261                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6262         }
6263         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6264                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6265                         dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6266                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6267         }
6268         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6269                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6270                         dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6271                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6272         }
6273         if (oldval != val)
6274                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6275
6276         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6277         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6278         if (!event.msg_buf)
6279                 return;
6280
6281         do {
6282                 ret = i40e_clean_arq_element(hw, &event, &pending);
6283                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6284                         break;
6285                 else if (ret) {
6286                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6287                         break;
6288                 }
6289
6290                 opcode = le16_to_cpu(event.desc.opcode);
6291                 switch (opcode) {
6292
6293                 case i40e_aqc_opc_get_link_status:
6294                         i40e_handle_link_event(pf, &event);
6295                         break;
6296                 case i40e_aqc_opc_send_msg_to_pf:
6297                         ret = i40e_vc_process_vf_msg(pf,
6298                                         le16_to_cpu(event.desc.retval),
6299                                         le32_to_cpu(event.desc.cookie_high),
6300                                         le32_to_cpu(event.desc.cookie_low),
6301                                         event.msg_buf,
6302                                         event.msg_len);
6303                         break;
6304                 case i40e_aqc_opc_lldp_update_mib:
6305                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6306 #ifdef CONFIG_I40E_DCB
6307                         rtnl_lock();
6308                         ret = i40e_handle_lldp_event(pf, &event);
6309                         rtnl_unlock();
6310 #endif /* CONFIG_I40E_DCB */
6311                         break;
6312                 case i40e_aqc_opc_event_lan_overflow:
6313                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6314                         i40e_handle_lan_overflow_event(pf, &event);
6315                         break;
6316                 case i40e_aqc_opc_send_msg_to_peer:
6317                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6318                         break;
6319                 case i40e_aqc_opc_nvm_erase:
6320                 case i40e_aqc_opc_nvm_update:
6321                 case i40e_aqc_opc_oem_post_update:
6322                         i40e_debug(&pf->hw, I40E_DEBUG_NVM, "ARQ NVM operation completed\n");
6323                         break;
6324                 default:
6325                         dev_info(&pf->pdev->dev,
6326                                  "ARQ Error: Unknown event 0x%04x received\n",
6327                                  opcode);
6328                         break;
6329                 }
6330         } while (pending && (i++ < pf->adminq_work_limit));
6331
6332         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6333         /* re-enable Admin queue interrupt cause */
6334         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6335         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6336         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6337         i40e_flush(hw);
6338
6339         kfree(event.msg_buf);
6340 }
6341
6342 /**
6343  * i40e_verify_eeprom - make sure eeprom is good to use
6344  * @pf: board private structure
6345  **/
6346 static void i40e_verify_eeprom(struct i40e_pf *pf)
6347 {
6348         int err;
6349
6350         err = i40e_diag_eeprom_test(&pf->hw);
6351         if (err) {
6352                 /* retry in case of garbage read */
6353                 err = i40e_diag_eeprom_test(&pf->hw);
6354                 if (err) {
6355                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6356                                  err);
6357                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6358                 }
6359         }
6360
6361         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6362                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6363                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6364         }
6365 }
6366
6367 /**
6368  * i40e_enable_pf_switch_lb
6369  * @pf: pointer to the PF structure
6370  *
6371  * enable switch loop back or die - no point in a return value
6372  **/
6373 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6374 {
6375         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6376         struct i40e_vsi_context ctxt;
6377         int ret;
6378
6379         ctxt.seid = pf->main_vsi_seid;
6380         ctxt.pf_num = pf->hw.pf_id;
6381         ctxt.vf_num = 0;
6382         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6383         if (ret) {
6384                 dev_info(&pf->pdev->dev,
6385                          "couldn't get PF vsi config, err %s aq_err %s\n",
6386                          i40e_stat_str(&pf->hw, ret),
6387                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6388                 return;
6389         }
6390         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6391         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6392         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6393
6394         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6395         if (ret) {
6396                 dev_info(&pf->pdev->dev,
6397                          "update vsi switch failed, err %s aq_err %s\n",
6398                          i40e_stat_str(&pf->hw, ret),
6399                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6400         }
6401 }
6402
6403 /**
6404  * i40e_disable_pf_switch_lb
6405  * @pf: pointer to the PF structure
6406  *
6407  * disable switch loop back or die - no point in a return value
6408  **/
6409 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6410 {
6411         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6412         struct i40e_vsi_context ctxt;
6413         int ret;
6414
6415         ctxt.seid = pf->main_vsi_seid;
6416         ctxt.pf_num = pf->hw.pf_id;
6417         ctxt.vf_num = 0;
6418         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6419         if (ret) {
6420                 dev_info(&pf->pdev->dev,
6421                          "couldn't get PF vsi config, err %s aq_err %s\n",
6422                          i40e_stat_str(&pf->hw, ret),
6423                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6424                 return;
6425         }
6426         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6427         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6428         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6429
6430         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6431         if (ret) {
6432                 dev_info(&pf->pdev->dev,
6433                          "update vsi switch failed, err %s aq_err %s\n",
6434                          i40e_stat_str(&pf->hw, ret),
6435                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6436         }
6437 }
6438
6439 /**
6440  * i40e_config_bridge_mode - Configure the HW bridge mode
6441  * @veb: pointer to the bridge instance
6442  *
6443  * Configure the loop back mode for the LAN VSI that is downlink to the
6444  * specified HW bridge instance. It is expected this function is called
6445  * when a new HW bridge is instantiated.
6446  **/
6447 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6448 {
6449         struct i40e_pf *pf = veb->pf;
6450
6451         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
6452                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6453                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6454         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6455                 i40e_disable_pf_switch_lb(pf);
6456         else
6457                 i40e_enable_pf_switch_lb(pf);
6458 }
6459
6460 /**
6461  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6462  * @veb: pointer to the VEB instance
6463  *
6464  * This is a recursive function that first builds the attached VSIs then
6465  * recurses in to build the next layer of VEB.  We track the connections
6466  * through our own index numbers because the seid's from the HW could
6467  * change across the reset.
6468  **/
6469 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6470 {
6471         struct i40e_vsi *ctl_vsi = NULL;
6472         struct i40e_pf *pf = veb->pf;
6473         int v, veb_idx;
6474         int ret;
6475
6476         /* build VSI that owns this VEB, temporarily attached to base VEB */
6477         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6478                 if (pf->vsi[v] &&
6479                     pf->vsi[v]->veb_idx == veb->idx &&
6480                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6481                         ctl_vsi = pf->vsi[v];
6482                         break;
6483                 }
6484         }
6485         if (!ctl_vsi) {
6486                 dev_info(&pf->pdev->dev,
6487                          "missing owner VSI for veb_idx %d\n", veb->idx);
6488                 ret = -ENOENT;
6489                 goto end_reconstitute;
6490         }
6491         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6492                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6493         ret = i40e_add_vsi(ctl_vsi);
6494         if (ret) {
6495                 dev_info(&pf->pdev->dev,
6496                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6497                          veb->idx, ret);
6498                 goto end_reconstitute;
6499         }
6500         i40e_vsi_reset_stats(ctl_vsi);
6501
6502         /* create the VEB in the switch and move the VSI onto the VEB */
6503         ret = i40e_add_veb(veb, ctl_vsi);
6504         if (ret)
6505                 goto end_reconstitute;
6506
6507         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6508                 veb->bridge_mode = BRIDGE_MODE_VEB;
6509         else
6510                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6511         i40e_config_bridge_mode(veb);
6512
6513         /* create the remaining VSIs attached to this VEB */
6514         for (v = 0; v < pf->num_alloc_vsi; v++) {
6515                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6516                         continue;
6517
6518                 if (pf->vsi[v]->veb_idx == veb->idx) {
6519                         struct i40e_vsi *vsi = pf->vsi[v];
6520
6521                         vsi->uplink_seid = veb->seid;
6522                         ret = i40e_add_vsi(vsi);
6523                         if (ret) {
6524                                 dev_info(&pf->pdev->dev,
6525                                          "rebuild of vsi_idx %d failed: %d\n",
6526                                          v, ret);
6527                                 goto end_reconstitute;
6528                         }
6529                         i40e_vsi_reset_stats(vsi);
6530                 }
6531         }
6532
6533         /* create any VEBs attached to this VEB - RECURSION */
6534         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6535                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6536                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6537                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6538                         if (ret)
6539                                 break;
6540                 }
6541         }
6542
6543 end_reconstitute:
6544         return ret;
6545 }
6546
6547 /**
6548  * i40e_get_capabilities - get info about the HW
6549  * @pf: the PF struct
6550  **/
6551 static int i40e_get_capabilities(struct i40e_pf *pf)
6552 {
6553         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6554         u16 data_size;
6555         int buf_len;
6556         int err;
6557
6558         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6559         do {
6560                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6561                 if (!cap_buf)
6562                         return -ENOMEM;
6563
6564                 /* this loads the data into the hw struct for us */
6565                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6566                                             &data_size,
6567                                             i40e_aqc_opc_list_func_capabilities,
6568                                             NULL);
6569                 /* data loaded, buffer no longer needed */
6570                 kfree(cap_buf);
6571
6572                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6573                         /* retry with a larger buffer */
6574                         buf_len = data_size;
6575                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6576                         dev_info(&pf->pdev->dev,
6577                                  "capability discovery failed, err %s aq_err %s\n",
6578                                  i40e_stat_str(&pf->hw, err),
6579                                  i40e_aq_str(&pf->hw,
6580                                              pf->hw.aq.asq_last_status));
6581                         return -ENODEV;
6582                 }
6583         } while (err);
6584
6585         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6586                 dev_info(&pf->pdev->dev,
6587                          "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",
6588                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6589                          pf->hw.func_caps.num_msix_vectors,
6590                          pf->hw.func_caps.num_msix_vectors_vf,
6591                          pf->hw.func_caps.fd_filters_guaranteed,
6592                          pf->hw.func_caps.fd_filters_best_effort,
6593                          pf->hw.func_caps.num_tx_qp,
6594                          pf->hw.func_caps.num_vsis);
6595
6596 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6597                        + pf->hw.func_caps.num_vfs)
6598         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6599                 dev_info(&pf->pdev->dev,
6600                          "got num_vsis %d, setting num_vsis to %d\n",
6601                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6602                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6603         }
6604
6605         return 0;
6606 }
6607
6608 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6609
6610 /**
6611  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6612  * @pf: board private structure
6613  **/
6614 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6615 {
6616         struct i40e_vsi *vsi;
6617         int i;
6618
6619         /* quick workaround for an NVM issue that leaves a critical register
6620          * uninitialized
6621          */
6622         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6623                 static const u32 hkey[] = {
6624                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6625                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6626                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6627                         0x95b3a76d};
6628
6629                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6630                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6631         }
6632
6633         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6634                 return;
6635
6636         /* find existing VSI and see if it needs configuring */
6637         vsi = NULL;
6638         for (i = 0; i < pf->num_alloc_vsi; i++) {
6639                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6640                         vsi = pf->vsi[i];
6641                         break;
6642                 }
6643         }
6644
6645         /* create a new VSI if none exists */
6646         if (!vsi) {
6647                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6648                                      pf->vsi[pf->lan_vsi]->seid, 0);
6649                 if (!vsi) {
6650                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6651                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6652                         return;
6653                 }
6654         }
6655
6656         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6657 }
6658
6659 /**
6660  * i40e_fdir_teardown - release the Flow Director resources
6661  * @pf: board private structure
6662  **/
6663 static void i40e_fdir_teardown(struct i40e_pf *pf)
6664 {
6665         int i;
6666
6667         i40e_fdir_filter_exit(pf);
6668         for (i = 0; i < pf->num_alloc_vsi; i++) {
6669                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6670                         i40e_vsi_release(pf->vsi[i]);
6671                         break;
6672                 }
6673         }
6674 }
6675
6676 /**
6677  * i40e_prep_for_reset - prep for the core to reset
6678  * @pf: board private structure
6679  *
6680  * Close up the VFs and other things in prep for PF Reset.
6681   **/
6682 static void i40e_prep_for_reset(struct i40e_pf *pf)
6683 {
6684         struct i40e_hw *hw = &pf->hw;
6685         i40e_status ret = 0;
6686         u32 v;
6687
6688         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6689         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6690                 return;
6691
6692         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6693
6694         /* quiesce the VSIs and their queues that are not already DOWN */
6695         i40e_pf_quiesce_all_vsi(pf);
6696
6697         for (v = 0; v < pf->num_alloc_vsi; v++) {
6698                 if (pf->vsi[v])
6699                         pf->vsi[v]->seid = 0;
6700         }
6701
6702         i40e_shutdown_adminq(&pf->hw);
6703
6704         /* call shutdown HMC */
6705         if (hw->hmc.hmc_obj) {
6706                 ret = i40e_shutdown_lan_hmc(hw);
6707                 if (ret)
6708                         dev_warn(&pf->pdev->dev,
6709                                  "shutdown_lan_hmc failed: %d\n", ret);
6710         }
6711 }
6712
6713 /**
6714  * i40e_send_version - update firmware with driver version
6715  * @pf: PF struct
6716  */
6717 static void i40e_send_version(struct i40e_pf *pf)
6718 {
6719         struct i40e_driver_version dv;
6720
6721         dv.major_version = DRV_VERSION_MAJOR;
6722         dv.minor_version = DRV_VERSION_MINOR;
6723         dv.build_version = DRV_VERSION_BUILD;
6724         dv.subbuild_version = 0;
6725         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6726         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6727 }
6728
6729 /**
6730  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6731  * @pf: board private structure
6732  * @reinit: if the Main VSI needs to re-initialized.
6733  **/
6734 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6735 {
6736         struct i40e_hw *hw = &pf->hw;
6737         u8 set_fc_aq_fail = 0;
6738         i40e_status ret;
6739         u32 val;
6740         u32 v;
6741
6742         /* Now we wait for GRST to settle out.
6743          * We don't have to delete the VEBs or VSIs from the hw switch
6744          * because the reset will make them disappear.
6745          */
6746         ret = i40e_pf_reset(hw);
6747         if (ret) {
6748                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6749                 set_bit(__I40E_RESET_FAILED, &pf->state);
6750                 goto clear_recovery;
6751         }
6752         pf->pfr_count++;
6753
6754         if (test_bit(__I40E_DOWN, &pf->state))
6755                 goto clear_recovery;
6756         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6757
6758         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6759         ret = i40e_init_adminq(&pf->hw);
6760         if (ret) {
6761                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6762                          i40e_stat_str(&pf->hw, ret),
6763                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6764                 goto clear_recovery;
6765         }
6766
6767         /* re-verify the eeprom if we just had an EMP reset */
6768         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6769                 i40e_verify_eeprom(pf);
6770
6771         i40e_clear_pxe_mode(hw);
6772         ret = i40e_get_capabilities(pf);
6773         if (ret)
6774                 goto end_core_reset;
6775
6776         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6777                                 hw->func_caps.num_rx_qp,
6778                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6779         if (ret) {
6780                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6781                 goto end_core_reset;
6782         }
6783         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6784         if (ret) {
6785                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6786                 goto end_core_reset;
6787         }
6788
6789 #ifdef CONFIG_I40E_DCB
6790         ret = i40e_init_pf_dcb(pf);
6791         if (ret) {
6792                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6793                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6794                 /* Continue without DCB enabled */
6795         }
6796 #endif /* CONFIG_I40E_DCB */
6797 #ifdef I40E_FCOE
6798         i40e_init_pf_fcoe(pf);
6799
6800 #endif
6801         /* do basic switch setup */
6802         ret = i40e_setup_pf_switch(pf, reinit);
6803         if (ret)
6804                 goto end_core_reset;
6805
6806         /* driver is only interested in link up/down and module qualification
6807          * reports from firmware
6808          */
6809         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6810                                        I40E_AQ_EVENT_LINK_UPDOWN |
6811                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6812         if (ret)
6813                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6814                          i40e_stat_str(&pf->hw, ret),
6815                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6816
6817         /* make sure our flow control settings are restored */
6818         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6819         if (ret)
6820                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
6821                         i40e_stat_str(&pf->hw, ret),
6822                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6823
6824         /* Rebuild the VSIs and VEBs that existed before reset.
6825          * They are still in our local switch element arrays, so only
6826          * need to rebuild the switch model in the HW.
6827          *
6828          * If there were VEBs but the reconstitution failed, we'll try
6829          * try to recover minimal use by getting the basic PF VSI working.
6830          */
6831         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6832                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6833                 /* find the one VEB connected to the MAC, and find orphans */
6834                 for (v = 0; v < I40E_MAX_VEB; v++) {
6835                         if (!pf->veb[v])
6836                                 continue;
6837
6838                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6839                             pf->veb[v]->uplink_seid == 0) {
6840                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6841
6842                                 if (!ret)
6843                                         continue;
6844
6845                                 /* If Main VEB failed, we're in deep doodoo,
6846                                  * so give up rebuilding the switch and set up
6847                                  * for minimal rebuild of PF VSI.
6848                                  * If orphan failed, we'll report the error
6849                                  * but try to keep going.
6850                                  */
6851                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6852                                         dev_info(&pf->pdev->dev,
6853                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6854                                                  ret);
6855                                         pf->vsi[pf->lan_vsi]->uplink_seid
6856                                                                 = pf->mac_seid;
6857                                         break;
6858                                 } else if (pf->veb[v]->uplink_seid == 0) {
6859                                         dev_info(&pf->pdev->dev,
6860                                                  "rebuild of orphan VEB failed: %d\n",
6861                                                  ret);
6862                                 }
6863                         }
6864                 }
6865         }
6866
6867         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6868                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6869                 /* no VEB, so rebuild only the Main VSI */
6870                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6871                 if (ret) {
6872                         dev_info(&pf->pdev->dev,
6873                                  "rebuild of Main VSI failed: %d\n", ret);
6874                         goto end_core_reset;
6875                 }
6876         }
6877
6878         /* Reconfigure hardware for allowing smaller MSS in the case
6879          * of TSO, so that we avoid the MDD being fired and causing
6880          * a reset in the case of small MSS+TSO.
6881          */
6882 #define I40E_REG_MSS          0x000E64DC
6883 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
6884 #define I40E_64BYTE_MSS       0x400000
6885         val = rd32(hw, I40E_REG_MSS);
6886         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
6887                 val &= ~I40E_REG_MSS_MIN_MASK;
6888                 val |= I40E_64BYTE_MSS;
6889                 wr32(hw, I40E_REG_MSS, val);
6890         }
6891
6892         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
6893             (pf->hw.aq.fw_maj_ver < 4)) {
6894                 msleep(75);
6895                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6896                 if (ret)
6897                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6898                                  i40e_stat_str(&pf->hw, ret),
6899                                  i40e_aq_str(&pf->hw,
6900                                              pf->hw.aq.asq_last_status));
6901         }
6902         /* reinit the misc interrupt */
6903         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6904                 ret = i40e_setup_misc_vector(pf);
6905
6906         /* Add a filter to drop all Flow control frames from any VSI from being
6907          * transmitted. By doing so we stop a malicious VF from sending out
6908          * PAUSE or PFC frames and potentially controlling traffic for other
6909          * PF/VF VSIs.
6910          * The FW can still send Flow control frames if enabled.
6911          */
6912         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
6913                                                        pf->main_vsi_seid);
6914
6915         /* restart the VSIs that were rebuilt and running before the reset */
6916         i40e_pf_unquiesce_all_vsi(pf);
6917
6918         if (pf->num_alloc_vfs) {
6919                 for (v = 0; v < pf->num_alloc_vfs; v++)
6920                         i40e_reset_vf(&pf->vf[v], true);
6921         }
6922
6923         /* tell the firmware that we're starting */
6924         i40e_send_version(pf);
6925
6926 end_core_reset:
6927         clear_bit(__I40E_RESET_FAILED, &pf->state);
6928 clear_recovery:
6929         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6930 }
6931
6932 /**
6933  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6934  * @pf: board private structure
6935  *
6936  * Close up the VFs and other things in prep for a Core Reset,
6937  * then get ready to rebuild the world.
6938  **/
6939 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6940 {
6941         i40e_prep_for_reset(pf);
6942         i40e_reset_and_rebuild(pf, false);
6943 }
6944
6945 /**
6946  * i40e_handle_mdd_event
6947  * @pf: pointer to the PF structure
6948  *
6949  * Called from the MDD irq handler to identify possibly malicious vfs
6950  **/
6951 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6952 {
6953         struct i40e_hw *hw = &pf->hw;
6954         bool mdd_detected = false;
6955         bool pf_mdd_detected = false;
6956         struct i40e_vf *vf;
6957         u32 reg;
6958         int i;
6959
6960         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6961                 return;
6962
6963         /* find what triggered the MDD event */
6964         reg = rd32(hw, I40E_GL_MDET_TX);
6965         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6966                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6967                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6968                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6969                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6970                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6971                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6972                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6973                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6974                                 pf->hw.func_caps.base_queue;
6975                 if (netif_msg_tx_err(pf))
6976                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6977                                  event, queue, pf_num, vf_num);
6978                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6979                 mdd_detected = true;
6980         }
6981         reg = rd32(hw, I40E_GL_MDET_RX);
6982         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6983                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6984                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6985                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6986                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6987                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6988                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6989                                 pf->hw.func_caps.base_queue;
6990                 if (netif_msg_rx_err(pf))
6991                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6992                                  event, queue, func);
6993                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6994                 mdd_detected = true;
6995         }
6996
6997         if (mdd_detected) {
6998                 reg = rd32(hw, I40E_PF_MDET_TX);
6999                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
7000                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
7001                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
7002                         pf_mdd_detected = true;
7003                 }
7004                 reg = rd32(hw, I40E_PF_MDET_RX);
7005                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
7006                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
7007                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
7008                         pf_mdd_detected = true;
7009                 }
7010                 /* Queue belongs to the PF, initiate a reset */
7011                 if (pf_mdd_detected) {
7012                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
7013                         i40e_service_event_schedule(pf);
7014                 }
7015         }
7016
7017         /* see if one of the VFs needs its hand slapped */
7018         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
7019                 vf = &(pf->vf[i]);
7020                 reg = rd32(hw, I40E_VP_MDET_TX(i));
7021                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
7022                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
7023                         vf->num_mdd_events++;
7024                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
7025                                  i);
7026                 }
7027
7028                 reg = rd32(hw, I40E_VP_MDET_RX(i));
7029                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
7030                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
7031                         vf->num_mdd_events++;
7032                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
7033                                  i);
7034                 }
7035
7036                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
7037                         dev_info(&pf->pdev->dev,
7038                                  "Too many MDD events on VF %d, disabled\n", i);
7039                         dev_info(&pf->pdev->dev,
7040                                  "Use PF Control I/F to re-enable the VF\n");
7041                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
7042                 }
7043         }
7044
7045         /* re-enable mdd interrupt cause */
7046         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
7047         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
7048         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
7049         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
7050         i40e_flush(hw);
7051 }
7052
7053 /**
7054  * i40e_sync_udp_filters_subtask - Sync the VSI filter list with HW
7055  * @pf: board private structure
7056  **/
7057 static void i40e_sync_udp_filters_subtask(struct i40e_pf *pf)
7058 {
7059 #if IS_ENABLED(CONFIG_VXLAN) || IS_ENABLED(CONFIG_GENEVE)
7060         struct i40e_hw *hw = &pf->hw;
7061         i40e_status ret;
7062         __be16 port;
7063         int i;
7064
7065         if (!(pf->flags & I40E_FLAG_UDP_FILTER_SYNC))
7066                 return;
7067
7068         pf->flags &= ~I40E_FLAG_UDP_FILTER_SYNC;
7069
7070         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7071                 if (pf->pending_udp_bitmap & BIT_ULL(i)) {
7072                         pf->pending_udp_bitmap &= ~BIT_ULL(i);
7073                         port = pf->udp_ports[i].index;
7074                         if (port)
7075                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
7076                                                      pf->udp_ports[i].type,
7077                                                      NULL, NULL);
7078                         else
7079                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
7080
7081                         if (ret) {
7082                                 dev_info(&pf->pdev->dev,
7083                                          "%s vxlan port %d, index %d failed, err %s aq_err %s\n",
7084                                          port ? "add" : "delete",
7085                                          ntohs(port), i,
7086                                          i40e_stat_str(&pf->hw, ret),
7087                                          i40e_aq_str(&pf->hw,
7088                                                     pf->hw.aq.asq_last_status));
7089                                 pf->udp_ports[i].index = 0;
7090                         }
7091                 }
7092         }
7093 #endif
7094 }
7095
7096 /**
7097  * i40e_service_task - Run the driver's async subtasks
7098  * @work: pointer to work_struct containing our data
7099  **/
7100 static void i40e_service_task(struct work_struct *work)
7101 {
7102         struct i40e_pf *pf = container_of(work,
7103                                           struct i40e_pf,
7104                                           service_task);
7105         unsigned long start_time = jiffies;
7106
7107         /* don't bother with service tasks if a reset is in progress */
7108         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7109                 i40e_service_event_complete(pf);
7110                 return;
7111         }
7112
7113         i40e_detect_recover_hung(pf);
7114         i40e_reset_subtask(pf);
7115         i40e_handle_mdd_event(pf);
7116         i40e_vc_process_vflr_event(pf);
7117         i40e_watchdog_subtask(pf);
7118         i40e_fdir_reinit_subtask(pf);
7119         i40e_sync_filters_subtask(pf);
7120 #if IS_ENABLED(CONFIG_VXLAN) || IS_ENABLED(CONFIG_GENEVE)
7121         i40e_sync_udp_filters_subtask(pf);
7122 #endif
7123         i40e_clean_adminq_subtask(pf);
7124
7125         i40e_service_event_complete(pf);
7126
7127         /* If the tasks have taken longer than one timer cycle or there
7128          * is more work to be done, reschedule the service task now
7129          * rather than wait for the timer to tick again.
7130          */
7131         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
7132             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
7133             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
7134             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
7135                 i40e_service_event_schedule(pf);
7136 }
7137
7138 /**
7139  * i40e_service_timer - timer callback
7140  * @data: pointer to PF struct
7141  **/
7142 static void i40e_service_timer(unsigned long data)
7143 {
7144         struct i40e_pf *pf = (struct i40e_pf *)data;
7145
7146         mod_timer(&pf->service_timer,
7147                   round_jiffies(jiffies + pf->service_timer_period));
7148         i40e_service_event_schedule(pf);
7149 }
7150
7151 /**
7152  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
7153  * @vsi: the VSI being configured
7154  **/
7155 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
7156 {
7157         struct i40e_pf *pf = vsi->back;
7158
7159         switch (vsi->type) {
7160         case I40E_VSI_MAIN:
7161                 vsi->alloc_queue_pairs = pf->num_lan_qps;
7162                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7163                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7164                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7165                         vsi->num_q_vectors = pf->num_lan_msix;
7166                 else
7167                         vsi->num_q_vectors = 1;
7168
7169                 break;
7170
7171         case I40E_VSI_FDIR:
7172                 vsi->alloc_queue_pairs = 1;
7173                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
7174                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7175                 vsi->num_q_vectors = 1;
7176                 break;
7177
7178         case I40E_VSI_VMDQ2:
7179                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
7180                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7181                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7182                 vsi->num_q_vectors = pf->num_vmdq_msix;
7183                 break;
7184
7185         case I40E_VSI_SRIOV:
7186                 vsi->alloc_queue_pairs = pf->num_vf_qps;
7187                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7188                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7189                 break;
7190
7191 #ifdef I40E_FCOE
7192         case I40E_VSI_FCOE:
7193                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
7194                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7195                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7196                 vsi->num_q_vectors = pf->num_fcoe_msix;
7197                 break;
7198
7199 #endif /* I40E_FCOE */
7200         default:
7201                 WARN_ON(1);
7202                 return -ENODATA;
7203         }
7204
7205         return 0;
7206 }
7207
7208 /**
7209  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
7210  * @type: VSI pointer
7211  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
7212  *
7213  * On error: returns error code (negative)
7214  * On success: returns 0
7215  **/
7216 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
7217 {
7218         int size;
7219         int ret = 0;
7220
7221         /* allocate memory for both Tx and Rx ring pointers */
7222         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
7223         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
7224         if (!vsi->tx_rings)
7225                 return -ENOMEM;
7226         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
7227
7228         if (alloc_qvectors) {
7229                 /* allocate memory for q_vector pointers */
7230                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
7231                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
7232                 if (!vsi->q_vectors) {
7233                         ret = -ENOMEM;
7234                         goto err_vectors;
7235                 }
7236         }
7237         return ret;
7238
7239 err_vectors:
7240         kfree(vsi->tx_rings);
7241         return ret;
7242 }
7243
7244 /**
7245  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
7246  * @pf: board private structure
7247  * @type: type of VSI
7248  *
7249  * On error: returns error code (negative)
7250  * On success: returns vsi index in PF (positive)
7251  **/
7252 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7253 {
7254         int ret = -ENODEV;
7255         struct i40e_vsi *vsi;
7256         int vsi_idx;
7257         int i;
7258
7259         /* Need to protect the allocation of the VSIs at the PF level */
7260         mutex_lock(&pf->switch_mutex);
7261
7262         /* VSI list may be fragmented if VSI creation/destruction has
7263          * been happening.  We can afford to do a quick scan to look
7264          * for any free VSIs in the list.
7265          *
7266          * find next empty vsi slot, looping back around if necessary
7267          */
7268         i = pf->next_vsi;
7269         while (i < pf->num_alloc_vsi && pf->vsi[i])
7270                 i++;
7271         if (i >= pf->num_alloc_vsi) {
7272                 i = 0;
7273                 while (i < pf->next_vsi && pf->vsi[i])
7274                         i++;
7275         }
7276
7277         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7278                 vsi_idx = i;             /* Found one! */
7279         } else {
7280                 ret = -ENODEV;
7281                 goto unlock_pf;  /* out of VSI slots! */
7282         }
7283         pf->next_vsi = ++i;
7284
7285         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7286         if (!vsi) {
7287                 ret = -ENOMEM;
7288                 goto unlock_pf;
7289         }
7290         vsi->type = type;
7291         vsi->back = pf;
7292         set_bit(__I40E_DOWN, &vsi->state);
7293         vsi->flags = 0;
7294         vsi->idx = vsi_idx;
7295         vsi->rx_itr_setting = pf->rx_itr_default;
7296         vsi->tx_itr_setting = pf->tx_itr_default;
7297         vsi->int_rate_limit = 0;
7298         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7299                                 pf->rss_table_size : 64;
7300         vsi->netdev_registered = false;
7301         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7302         INIT_LIST_HEAD(&vsi->mac_filter_list);
7303         vsi->irqs_ready = false;
7304
7305         ret = i40e_set_num_rings_in_vsi(vsi);
7306         if (ret)
7307                 goto err_rings;
7308
7309         ret = i40e_vsi_alloc_arrays(vsi, true);
7310         if (ret)
7311                 goto err_rings;
7312
7313         /* Setup default MSIX irq handler for VSI */
7314         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7315
7316         /* Initialize VSI lock */
7317         spin_lock_init(&vsi->mac_filter_list_lock);
7318         pf->vsi[vsi_idx] = vsi;
7319         ret = vsi_idx;
7320         goto unlock_pf;
7321
7322 err_rings:
7323         pf->next_vsi = i - 1;
7324         kfree(vsi);
7325 unlock_pf:
7326         mutex_unlock(&pf->switch_mutex);
7327         return ret;
7328 }
7329
7330 /**
7331  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7332  * @type: VSI pointer
7333  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7334  *
7335  * On error: returns error code (negative)
7336  * On success: returns 0
7337  **/
7338 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7339 {
7340         /* free the ring and vector containers */
7341         if (free_qvectors) {
7342                 kfree(vsi->q_vectors);
7343                 vsi->q_vectors = NULL;
7344         }
7345         kfree(vsi->tx_rings);
7346         vsi->tx_rings = NULL;
7347         vsi->rx_rings = NULL;
7348 }
7349
7350 /**
7351  * i40e_clear_rss_config_user - clear the user configured RSS hash keys
7352  * and lookup table
7353  * @vsi: Pointer to VSI structure
7354  */
7355 static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
7356 {
7357         if (!vsi)
7358                 return;
7359
7360         kfree(vsi->rss_hkey_user);
7361         vsi->rss_hkey_user = NULL;
7362
7363         kfree(vsi->rss_lut_user);
7364         vsi->rss_lut_user = NULL;
7365 }
7366
7367 /**
7368  * i40e_vsi_clear - Deallocate the VSI provided
7369  * @vsi: the VSI being un-configured
7370  **/
7371 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7372 {
7373         struct i40e_pf *pf;
7374
7375         if (!vsi)
7376                 return 0;
7377
7378         if (!vsi->back)
7379                 goto free_vsi;
7380         pf = vsi->back;
7381
7382         mutex_lock(&pf->switch_mutex);
7383         if (!pf->vsi[vsi->idx]) {
7384                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7385                         vsi->idx, vsi->idx, vsi, vsi->type);
7386                 goto unlock_vsi;
7387         }
7388
7389         if (pf->vsi[vsi->idx] != vsi) {
7390                 dev_err(&pf->pdev->dev,
7391                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7392                         pf->vsi[vsi->idx]->idx,
7393                         pf->vsi[vsi->idx],
7394                         pf->vsi[vsi->idx]->type,
7395                         vsi->idx, vsi, vsi->type);
7396                 goto unlock_vsi;
7397         }
7398
7399         /* updates the PF for this cleared vsi */
7400         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7401         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7402
7403         i40e_vsi_free_arrays(vsi, true);
7404         i40e_clear_rss_config_user(vsi);
7405
7406         pf->vsi[vsi->idx] = NULL;
7407         if (vsi->idx < pf->next_vsi)
7408                 pf->next_vsi = vsi->idx;
7409
7410 unlock_vsi:
7411         mutex_unlock(&pf->switch_mutex);
7412 free_vsi:
7413         kfree(vsi);
7414
7415         return 0;
7416 }
7417
7418 /**
7419  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7420  * @vsi: the VSI being cleaned
7421  **/
7422 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7423 {
7424         int i;
7425
7426         if (vsi->tx_rings && vsi->tx_rings[0]) {
7427                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7428                         kfree_rcu(vsi->tx_rings[i], rcu);
7429                         vsi->tx_rings[i] = NULL;
7430                         vsi->rx_rings[i] = NULL;
7431                 }
7432         }
7433 }
7434
7435 /**
7436  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7437  * @vsi: the VSI being configured
7438  **/
7439 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7440 {
7441         struct i40e_ring *tx_ring, *rx_ring;
7442         struct i40e_pf *pf = vsi->back;
7443         int i;
7444
7445         /* Set basic values in the rings to be used later during open() */
7446         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7447                 /* allocate space for both Tx and Rx in one shot */
7448                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7449                 if (!tx_ring)
7450                         goto err_out;
7451
7452                 tx_ring->queue_index = i;
7453                 tx_ring->reg_idx = vsi->base_queue + i;
7454                 tx_ring->ring_active = false;
7455                 tx_ring->vsi = vsi;
7456                 tx_ring->netdev = vsi->netdev;
7457                 tx_ring->dev = &pf->pdev->dev;
7458                 tx_ring->count = vsi->num_desc;
7459                 tx_ring->size = 0;
7460                 tx_ring->dcb_tc = 0;
7461                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7462                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7463                 if (vsi->back->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE)
7464                         tx_ring->flags |= I40E_TXR_FLAGS_OUTER_UDP_CSUM;
7465                 vsi->tx_rings[i] = tx_ring;
7466
7467                 rx_ring = &tx_ring[1];
7468                 rx_ring->queue_index = i;
7469                 rx_ring->reg_idx = vsi->base_queue + i;
7470                 rx_ring->ring_active = false;
7471                 rx_ring->vsi = vsi;
7472                 rx_ring->netdev = vsi->netdev;
7473                 rx_ring->dev = &pf->pdev->dev;
7474                 rx_ring->count = vsi->num_desc;
7475                 rx_ring->size = 0;
7476                 rx_ring->dcb_tc = 0;
7477                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
7478                         set_ring_16byte_desc_enabled(rx_ring);
7479                 else
7480                         clear_ring_16byte_desc_enabled(rx_ring);
7481                 vsi->rx_rings[i] = rx_ring;
7482         }
7483
7484         return 0;
7485
7486 err_out:
7487         i40e_vsi_clear_rings(vsi);
7488         return -ENOMEM;
7489 }
7490
7491 /**
7492  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7493  * @pf: board private structure
7494  * @vectors: the number of MSI-X vectors to request
7495  *
7496  * Returns the number of vectors reserved, or error
7497  **/
7498 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7499 {
7500         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7501                                         I40E_MIN_MSIX, vectors);
7502         if (vectors < 0) {
7503                 dev_info(&pf->pdev->dev,
7504                          "MSI-X vector reservation failed: %d\n", vectors);
7505                 vectors = 0;
7506         }
7507
7508         return vectors;
7509 }
7510
7511 /**
7512  * i40e_init_msix - Setup the MSIX capability
7513  * @pf: board private structure
7514  *
7515  * Work with the OS to set up the MSIX vectors needed.
7516  *
7517  * Returns the number of vectors reserved or negative on failure
7518  **/
7519 static int i40e_init_msix(struct i40e_pf *pf)
7520 {
7521         struct i40e_hw *hw = &pf->hw;
7522         int vectors_left;
7523         int v_budget, i;
7524         int v_actual;
7525
7526         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7527                 return -ENODEV;
7528
7529         /* The number of vectors we'll request will be comprised of:
7530          *   - Add 1 for "other" cause for Admin Queue events, etc.
7531          *   - The number of LAN queue pairs
7532          *      - Queues being used for RSS.
7533          *              We don't need as many as max_rss_size vectors.
7534          *              use rss_size instead in the calculation since that
7535          *              is governed by number of cpus in the system.
7536          *      - assumes symmetric Tx/Rx pairing
7537          *   - The number of VMDq pairs
7538 #ifdef I40E_FCOE
7539          *   - The number of FCOE qps.
7540 #endif
7541          * Once we count this up, try the request.
7542          *
7543          * If we can't get what we want, we'll simplify to nearly nothing
7544          * and try again.  If that still fails, we punt.
7545          */
7546         vectors_left = hw->func_caps.num_msix_vectors;
7547         v_budget = 0;
7548
7549         /* reserve one vector for miscellaneous handler */
7550         if (vectors_left) {
7551                 v_budget++;
7552                 vectors_left--;
7553         }
7554
7555         /* reserve vectors for the main PF traffic queues */
7556         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7557         vectors_left -= pf->num_lan_msix;
7558         v_budget += pf->num_lan_msix;
7559
7560         /* reserve one vector for sideband flow director */
7561         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7562                 if (vectors_left) {
7563                         v_budget++;
7564                         vectors_left--;
7565                 } else {
7566                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7567                 }
7568         }
7569
7570 #ifdef I40E_FCOE
7571         /* can we reserve enough for FCoE? */
7572         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7573                 if (!vectors_left)
7574                         pf->num_fcoe_msix = 0;
7575                 else if (vectors_left >= pf->num_fcoe_qps)
7576                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7577                 else
7578                         pf->num_fcoe_msix = 1;
7579                 v_budget += pf->num_fcoe_msix;
7580                 vectors_left -= pf->num_fcoe_msix;
7581         }
7582
7583 #endif
7584         /* any vectors left over go for VMDq support */
7585         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7586                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7587                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7588
7589                 /* if we're short on vectors for what's desired, we limit
7590                  * the queues per vmdq.  If this is still more than are
7591                  * available, the user will need to change the number of
7592                  * queues/vectors used by the PF later with the ethtool
7593                  * channels command
7594                  */
7595                 if (vmdq_vecs < vmdq_vecs_wanted)
7596                         pf->num_vmdq_qps = 1;
7597                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7598
7599                 v_budget += vmdq_vecs;
7600                 vectors_left -= vmdq_vecs;
7601         }
7602
7603         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7604                                    GFP_KERNEL);
7605         if (!pf->msix_entries)
7606                 return -ENOMEM;
7607
7608         for (i = 0; i < v_budget; i++)
7609                 pf->msix_entries[i].entry = i;
7610         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7611
7612         if (v_actual != v_budget) {
7613                 /* If we have limited resources, we will start with no vectors
7614                  * for the special features and then allocate vectors to some
7615                  * of these features based on the policy and at the end disable
7616                  * the features that did not get any vectors.
7617                  */
7618 #ifdef I40E_FCOE
7619                 pf->num_fcoe_qps = 0;
7620                 pf->num_fcoe_msix = 0;
7621 #endif
7622                 pf->num_vmdq_msix = 0;
7623         }
7624
7625         if (v_actual < I40E_MIN_MSIX) {
7626                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7627                 kfree(pf->msix_entries);
7628                 pf->msix_entries = NULL;
7629                 return -ENODEV;
7630
7631         } else if (v_actual == I40E_MIN_MSIX) {
7632                 /* Adjust for minimal MSIX use */
7633                 pf->num_vmdq_vsis = 0;
7634                 pf->num_vmdq_qps = 0;
7635                 pf->num_lan_qps = 1;
7636                 pf->num_lan_msix = 1;
7637
7638         } else if (v_actual != v_budget) {
7639                 int vec;
7640
7641                 /* reserve the misc vector */
7642                 vec = v_actual - 1;
7643
7644                 /* Scale vector usage down */
7645                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7646                 pf->num_vmdq_vsis = 1;
7647                 pf->num_vmdq_qps = 1;
7648                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7649
7650                 /* partition out the remaining vectors */
7651                 switch (vec) {
7652                 case 2:
7653                         pf->num_lan_msix = 1;
7654                         break;
7655                 case 3:
7656 #ifdef I40E_FCOE
7657                         /* give one vector to FCoE */
7658                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7659                                 pf->num_lan_msix = 1;
7660                                 pf->num_fcoe_msix = 1;
7661                         }
7662 #else
7663                         pf->num_lan_msix = 2;
7664 #endif
7665                         break;
7666                 default:
7667 #ifdef I40E_FCOE
7668                         /* give one vector to FCoE */
7669                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7670                                 pf->num_fcoe_msix = 1;
7671                                 vec--;
7672                         }
7673 #endif
7674                         /* give the rest to the PF */
7675                         pf->num_lan_msix = min_t(int, vec, pf->num_lan_qps);
7676                         break;
7677                 }
7678         }
7679
7680         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7681             (pf->num_vmdq_msix == 0)) {
7682                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7683                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7684         }
7685 #ifdef I40E_FCOE
7686
7687         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7688                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7689                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7690         }
7691 #endif
7692         return v_actual;
7693 }
7694
7695 /**
7696  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7697  * @vsi: the VSI being configured
7698  * @v_idx: index of the vector in the vsi struct
7699  *
7700  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7701  **/
7702 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7703 {
7704         struct i40e_q_vector *q_vector;
7705
7706         /* allocate q_vector */
7707         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7708         if (!q_vector)
7709                 return -ENOMEM;
7710
7711         q_vector->vsi = vsi;
7712         q_vector->v_idx = v_idx;
7713         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7714         if (vsi->netdev)
7715                 netif_napi_add(vsi->netdev, &q_vector->napi,
7716                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7717
7718         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7719         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7720
7721         /* tie q_vector and vsi together */
7722         vsi->q_vectors[v_idx] = q_vector;
7723
7724         return 0;
7725 }
7726
7727 /**
7728  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7729  * @vsi: the VSI being configured
7730  *
7731  * We allocate one q_vector per queue interrupt.  If allocation fails we
7732  * return -ENOMEM.
7733  **/
7734 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7735 {
7736         struct i40e_pf *pf = vsi->back;
7737         int v_idx, num_q_vectors;
7738         int err;
7739
7740         /* if not MSIX, give the one vector only to the LAN VSI */
7741         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7742                 num_q_vectors = vsi->num_q_vectors;
7743         else if (vsi == pf->vsi[pf->lan_vsi])
7744                 num_q_vectors = 1;
7745         else
7746                 return -EINVAL;
7747
7748         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7749                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7750                 if (err)
7751                         goto err_out;
7752         }
7753
7754         return 0;
7755
7756 err_out:
7757         while (v_idx--)
7758                 i40e_free_q_vector(vsi, v_idx);
7759
7760         return err;
7761 }
7762
7763 /**
7764  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7765  * @pf: board private structure to initialize
7766  **/
7767 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7768 {
7769         int vectors = 0;
7770         ssize_t size;
7771
7772         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7773                 vectors = i40e_init_msix(pf);
7774                 if (vectors < 0) {
7775                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7776 #ifdef I40E_FCOE
7777                                        I40E_FLAG_FCOE_ENABLED   |
7778 #endif
7779                                        I40E_FLAG_RSS_ENABLED    |
7780                                        I40E_FLAG_DCB_CAPABLE    |
7781                                        I40E_FLAG_SRIOV_ENABLED  |
7782                                        I40E_FLAG_FD_SB_ENABLED  |
7783                                        I40E_FLAG_FD_ATR_ENABLED |
7784                                        I40E_FLAG_VMDQ_ENABLED);
7785
7786                         /* rework the queue expectations without MSIX */
7787                         i40e_determine_queue_usage(pf);
7788                 }
7789         }
7790
7791         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7792             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7793                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7794                 vectors = pci_enable_msi(pf->pdev);
7795                 if (vectors < 0) {
7796                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7797                                  vectors);
7798                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7799                 }
7800                 vectors = 1;  /* one MSI or Legacy vector */
7801         }
7802
7803         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7804                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7805
7806         /* set up vector assignment tracking */
7807         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7808         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7809         if (!pf->irq_pile) {
7810                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7811                 return -ENOMEM;
7812         }
7813         pf->irq_pile->num_entries = vectors;
7814         pf->irq_pile->search_hint = 0;
7815
7816         /* track first vector for misc interrupts, ignore return */
7817         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7818
7819         return 0;
7820 }
7821
7822 /**
7823  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7824  * @pf: board private structure
7825  *
7826  * This sets up the handler for MSIX 0, which is used to manage the
7827  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7828  * when in MSI or Legacy interrupt mode.
7829  **/
7830 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7831 {
7832         struct i40e_hw *hw = &pf->hw;
7833         int err = 0;
7834
7835         /* Only request the irq if this is the first time through, and
7836          * not when we're rebuilding after a Reset
7837          */
7838         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7839                 err = request_irq(pf->msix_entries[0].vector,
7840                                   i40e_intr, 0, pf->int_name, pf);
7841                 if (err) {
7842                         dev_info(&pf->pdev->dev,
7843                                  "request_irq for %s failed: %d\n",
7844                                  pf->int_name, err);
7845                         return -EFAULT;
7846                 }
7847         }
7848
7849         i40e_enable_misc_int_causes(pf);
7850
7851         /* associate no queues to the misc vector */
7852         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7853         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7854
7855         i40e_flush(hw);
7856
7857         i40e_irq_dynamic_enable_icr0(pf);
7858
7859         return err;
7860 }
7861
7862 /**
7863  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7864  * @vsi: vsi structure
7865  * @seed: RSS hash seed
7866  **/
7867 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
7868                               u8 *lut, u16 lut_size)
7869 {
7870         struct i40e_aqc_get_set_rss_key_data rss_key;
7871         struct i40e_pf *pf = vsi->back;
7872         struct i40e_hw *hw = &pf->hw;
7873         bool pf_lut = false;
7874         u8 *rss_lut;
7875         int ret, i;
7876
7877         memset(&rss_key, 0, sizeof(rss_key));
7878         memcpy(&rss_key, seed, sizeof(rss_key));
7879
7880         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7881         if (!rss_lut)
7882                 return -ENOMEM;
7883
7884         /* Populate the LUT with max no. of queues in round robin fashion */
7885         for (i = 0; i < vsi->rss_table_size; i++)
7886                 rss_lut[i] = i % vsi->rss_size;
7887
7888         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
7889         if (ret) {
7890                 dev_info(&pf->pdev->dev,
7891                          "Cannot set RSS key, err %s aq_err %s\n",
7892                          i40e_stat_str(&pf->hw, ret),
7893                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7894                 goto config_rss_aq_out;
7895         }
7896
7897         if (vsi->type == I40E_VSI_MAIN)
7898                 pf_lut = true;
7899
7900         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
7901                                   vsi->rss_table_size);
7902         if (ret)
7903                 dev_info(&pf->pdev->dev,
7904                          "Cannot set RSS lut, err %s aq_err %s\n",
7905                          i40e_stat_str(&pf->hw, ret),
7906                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7907
7908 config_rss_aq_out:
7909         kfree(rss_lut);
7910         return ret;
7911 }
7912
7913 /**
7914  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
7915  * @vsi: VSI structure
7916  **/
7917 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
7918 {
7919         u8 seed[I40E_HKEY_ARRAY_SIZE];
7920         struct i40e_pf *pf = vsi->back;
7921         u8 *lut;
7922         int ret;
7923
7924         if (!(pf->flags & I40E_FLAG_RSS_AQ_CAPABLE))
7925                 return 0;
7926
7927         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
7928         if (!lut)
7929                 return -ENOMEM;
7930
7931         i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
7932         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7933         vsi->rss_size = min_t(int, pf->alloc_rss_size, vsi->num_queue_pairs);
7934         ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
7935         kfree(lut);
7936
7937         return ret;
7938 }
7939
7940 /**
7941  * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
7942  * @vsi: Pointer to vsi structure
7943  * @seed: RSS hash seed
7944  * @lut: Lookup table
7945  * @lut_size: Lookup table size
7946  *
7947  * Returns 0 on success, negative on failure
7948  **/
7949 static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
7950                                const u8 *lut, u16 lut_size)
7951 {
7952         struct i40e_pf *pf = vsi->back;
7953         struct i40e_hw *hw = &pf->hw;
7954         u8 i;
7955
7956         /* Fill out hash function seed */
7957         if (seed) {
7958                 u32 *seed_dw = (u32 *)seed;
7959
7960                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7961                         wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
7962         }
7963
7964         if (lut) {
7965                 u32 *lut_dw = (u32 *)lut;
7966
7967                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
7968                         return -EINVAL;
7969
7970                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
7971                         wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
7972         }
7973         i40e_flush(hw);
7974
7975         return 0;
7976 }
7977
7978 /**
7979  * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
7980  * @vsi: Pointer to VSI structure
7981  * @seed: Buffer to store the keys
7982  * @lut: Buffer to store the lookup table entries
7983  * @lut_size: Size of buffer to store the lookup table entries
7984  *
7985  * Returns 0 on success, negative on failure
7986  */
7987 static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
7988                             u8 *lut, u16 lut_size)
7989 {
7990         struct i40e_pf *pf = vsi->back;
7991         struct i40e_hw *hw = &pf->hw;
7992         u16 i;
7993
7994         if (seed) {
7995                 u32 *seed_dw = (u32 *)seed;
7996
7997                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7998                         seed_dw[i] = rd32(hw, I40E_PFQF_HKEY(i));
7999         }
8000         if (lut) {
8001                 u32 *lut_dw = (u32 *)lut;
8002
8003                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
8004                         return -EINVAL;
8005                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8006                         lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
8007         }
8008
8009         return 0;
8010 }
8011
8012 /**
8013  * i40e_config_rss - Configure RSS keys and lut
8014  * @vsi: Pointer to VSI structure
8015  * @seed: RSS hash seed
8016  * @lut: Lookup table
8017  * @lut_size: Lookup table size
8018  *
8019  * Returns 0 on success, negative on failure
8020  */
8021 int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8022 {
8023         struct i40e_pf *pf = vsi->back;
8024
8025         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8026                 return i40e_config_rss_aq(vsi, seed, lut, lut_size);
8027         else
8028                 return i40e_config_rss_reg(vsi, seed, lut, lut_size);
8029 }
8030
8031 /**
8032  * i40e_get_rss - Get RSS keys and lut
8033  * @vsi: Pointer to VSI structure
8034  * @seed: Buffer to store the keys
8035  * @lut: Buffer to store the lookup table entries
8036  * lut_size: Size of buffer to store the lookup table entries
8037  *
8038  * Returns 0 on success, negative on failure
8039  */
8040 int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8041 {
8042         return i40e_get_rss_reg(vsi, seed, lut, lut_size);
8043 }
8044
8045 /**
8046  * i40e_fill_rss_lut - Fill the RSS lookup table with default values
8047  * @pf: Pointer to board private structure
8048  * @lut: Lookup table
8049  * @rss_table_size: Lookup table size
8050  * @rss_size: Range of queue number for hashing
8051  */
8052 static void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
8053                               u16 rss_table_size, u16 rss_size)
8054 {
8055         u16 i;
8056
8057         for (i = 0; i < rss_table_size; i++)
8058                 lut[i] = i % rss_size;
8059 }
8060
8061 /**
8062  * i40e_pf_config_rss - Prepare for RSS if used
8063  * @pf: board private structure
8064  **/
8065 static int i40e_pf_config_rss(struct i40e_pf *pf)
8066 {
8067         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8068         u8 seed[I40E_HKEY_ARRAY_SIZE];
8069         u8 *lut;
8070         struct i40e_hw *hw = &pf->hw;
8071         u32 reg_val;
8072         u64 hena;
8073         int ret;
8074
8075         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
8076         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
8077                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
8078         hena |= i40e_pf_get_default_rss_hena(pf);
8079
8080         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
8081         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
8082
8083         /* Determine the RSS table size based on the hardware capabilities */
8084         reg_val = rd32(hw, I40E_PFQF_CTL_0);
8085         reg_val = (pf->rss_table_size == 512) ?
8086                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
8087                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
8088         wr32(hw, I40E_PFQF_CTL_0, reg_val);
8089
8090         /* Determine the RSS size of the VSI */
8091         if (!vsi->rss_size)
8092                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8093                                       vsi->num_queue_pairs);
8094
8095         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8096         if (!lut)
8097                 return -ENOMEM;
8098
8099         /* Use user configured lut if there is one, otherwise use default */
8100         if (vsi->rss_lut_user)
8101                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8102         else
8103                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8104
8105         /* Use user configured hash key if there is one, otherwise
8106          * use default.
8107          */
8108         if (vsi->rss_hkey_user)
8109                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8110         else
8111                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8112         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
8113         kfree(lut);
8114
8115         return ret;
8116 }
8117
8118 /**
8119  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
8120  * @pf: board private structure
8121  * @queue_count: the requested queue count for rss.
8122  *
8123  * returns 0 if rss is not enabled, if enabled returns the final rss queue
8124  * count which may be different from the requested queue count.
8125  **/
8126 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
8127 {
8128         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8129         int new_rss_size;
8130
8131         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
8132                 return 0;
8133
8134         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
8135
8136         if (queue_count != vsi->num_queue_pairs) {
8137                 vsi->req_queue_pairs = queue_count;
8138                 i40e_prep_for_reset(pf);
8139
8140                 pf->alloc_rss_size = new_rss_size;
8141
8142                 i40e_reset_and_rebuild(pf, true);
8143
8144                 /* Discard the user configured hash keys and lut, if less
8145                  * queues are enabled.
8146                  */
8147                 if (queue_count < vsi->rss_size) {
8148                         i40e_clear_rss_config_user(vsi);
8149                         dev_dbg(&pf->pdev->dev,
8150                                 "discard user configured hash keys and lut\n");
8151                 }
8152
8153                 /* Reset vsi->rss_size, as number of enabled queues changed */
8154                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8155                                       vsi->num_queue_pairs);
8156
8157                 i40e_pf_config_rss(pf);
8158         }
8159         dev_info(&pf->pdev->dev, "RSS count/HW max RSS count:  %d/%d\n",
8160                  pf->alloc_rss_size, pf->rss_size_max);
8161         return pf->alloc_rss_size;
8162 }
8163
8164 /**
8165  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
8166  * @pf: board private structure
8167  **/
8168 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
8169 {
8170         i40e_status status;
8171         bool min_valid, max_valid;
8172         u32 max_bw, min_bw;
8173
8174         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
8175                                            &min_valid, &max_valid);
8176
8177         if (!status) {
8178                 if (min_valid)
8179                         pf->npar_min_bw = min_bw;
8180                 if (max_valid)
8181                         pf->npar_max_bw = max_bw;
8182         }
8183
8184         return status;
8185 }
8186
8187 /**
8188  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
8189  * @pf: board private structure
8190  **/
8191 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
8192 {
8193         struct i40e_aqc_configure_partition_bw_data bw_data;
8194         i40e_status status;
8195
8196         /* Set the valid bit for this PF */
8197         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
8198         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
8199         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
8200
8201         /* Set the new bandwidths */
8202         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
8203
8204         return status;
8205 }
8206
8207 /**
8208  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
8209  * @pf: board private structure
8210  **/
8211 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
8212 {
8213         /* Commit temporary BW setting to permanent NVM image */
8214         enum i40e_admin_queue_err last_aq_status;
8215         i40e_status ret;
8216         u16 nvm_word;
8217
8218         if (pf->hw.partition_id != 1) {
8219                 dev_info(&pf->pdev->dev,
8220                          "Commit BW only works on partition 1! This is partition %d",
8221                          pf->hw.partition_id);
8222                 ret = I40E_NOT_SUPPORTED;
8223                 goto bw_commit_out;
8224         }
8225
8226         /* Acquire NVM for read access */
8227         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
8228         last_aq_status = pf->hw.aq.asq_last_status;
8229         if (ret) {
8230                 dev_info(&pf->pdev->dev,
8231                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
8232                          i40e_stat_str(&pf->hw, ret),
8233                          i40e_aq_str(&pf->hw, last_aq_status));
8234                 goto bw_commit_out;
8235         }
8236
8237         /* Read word 0x10 of NVM - SW compatibility word 1 */
8238         ret = i40e_aq_read_nvm(&pf->hw,
8239                                I40E_SR_NVM_CONTROL_WORD,
8240                                0x10, sizeof(nvm_word), &nvm_word,
8241                                false, NULL);
8242         /* Save off last admin queue command status before releasing
8243          * the NVM
8244          */
8245         last_aq_status = pf->hw.aq.asq_last_status;
8246         i40e_release_nvm(&pf->hw);
8247         if (ret) {
8248                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
8249                          i40e_stat_str(&pf->hw, ret),
8250                          i40e_aq_str(&pf->hw, last_aq_status));
8251                 goto bw_commit_out;
8252         }
8253
8254         /* Wait a bit for NVM release to complete */
8255         msleep(50);
8256
8257         /* Acquire NVM for write access */
8258         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
8259         last_aq_status = pf->hw.aq.asq_last_status;
8260         if (ret) {
8261                 dev_info(&pf->pdev->dev,
8262                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
8263                          i40e_stat_str(&pf->hw, ret),
8264                          i40e_aq_str(&pf->hw, last_aq_status));
8265                 goto bw_commit_out;
8266         }
8267         /* Write it back out unchanged to initiate update NVM,
8268          * which will force a write of the shadow (alt) RAM to
8269          * the NVM - thus storing the bandwidth values permanently.
8270          */
8271         ret = i40e_aq_update_nvm(&pf->hw,
8272                                  I40E_SR_NVM_CONTROL_WORD,
8273                                  0x10, sizeof(nvm_word),
8274                                  &nvm_word, true, NULL);
8275         /* Save off last admin queue command status before releasing
8276          * the NVM
8277          */
8278         last_aq_status = pf->hw.aq.asq_last_status;
8279         i40e_release_nvm(&pf->hw);
8280         if (ret)
8281                 dev_info(&pf->pdev->dev,
8282                          "BW settings NOT SAVED, err %s aq_err %s\n",
8283                          i40e_stat_str(&pf->hw, ret),
8284                          i40e_aq_str(&pf->hw, last_aq_status));
8285 bw_commit_out:
8286
8287         return ret;
8288 }
8289
8290 /**
8291  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
8292  * @pf: board private structure to initialize
8293  *
8294  * i40e_sw_init initializes the Adapter private data structure.
8295  * Fields are initialized based on PCI device information and
8296  * OS network device settings (MTU size).
8297  **/
8298 static int i40e_sw_init(struct i40e_pf *pf)
8299 {
8300         int err = 0;
8301         int size;
8302
8303         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
8304                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
8305         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
8306         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
8307                 if (I40E_DEBUG_USER & debug)
8308                         pf->hw.debug_mask = debug;
8309                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
8310                                                 I40E_DEFAULT_MSG_ENABLE);
8311         }
8312
8313         /* Set default capability flags */
8314         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
8315                     I40E_FLAG_MSI_ENABLED     |
8316                     I40E_FLAG_LINK_POLLING_ENABLED |
8317                     I40E_FLAG_MSIX_ENABLED;
8318
8319         if (iommu_present(&pci_bus_type))
8320                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
8321         else
8322                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
8323
8324         /* Set default ITR */
8325         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
8326         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
8327
8328         /* Depending on PF configurations, it is possible that the RSS
8329          * maximum might end up larger than the available queues
8330          */
8331         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
8332         pf->alloc_rss_size = 1;
8333         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
8334         pf->rss_size_max = min_t(int, pf->rss_size_max,
8335                                  pf->hw.func_caps.num_tx_qp);
8336         if (pf->hw.func_caps.rss) {
8337                 pf->flags |= I40E_FLAG_RSS_ENABLED;
8338                 pf->alloc_rss_size = min_t(int, pf->rss_size_max,
8339                                            num_online_cpus());
8340         }
8341
8342         /* MFP mode enabled */
8343         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
8344                 pf->flags |= I40E_FLAG_MFP_ENABLED;
8345                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
8346                 if (i40e_get_npar_bw_setting(pf))
8347                         dev_warn(&pf->pdev->dev,
8348                                  "Could not get NPAR bw settings\n");
8349                 else
8350                         dev_info(&pf->pdev->dev,
8351                                  "Min BW = %8.8x, Max BW = %8.8x\n",
8352                                  pf->npar_min_bw, pf->npar_max_bw);
8353         }
8354
8355         /* FW/NVM is not yet fixed in this regard */
8356         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
8357             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
8358                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8359                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
8360                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
8361                     pf->hw.num_partitions > 1)
8362                         dev_info(&pf->pdev->dev,
8363                                  "Flow Director Sideband mode Disabled in MFP mode\n");
8364                 else
8365                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8366                 pf->fdir_pf_filter_count =
8367                                  pf->hw.func_caps.fd_filters_guaranteed;
8368                 pf->hw.fdir_shared_filter_count =
8369                                  pf->hw.func_caps.fd_filters_best_effort;
8370         }
8371
8372         if (pf->hw.func_caps.vmdq) {
8373                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
8374                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
8375                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
8376         }
8377
8378 #ifdef I40E_FCOE
8379         i40e_init_pf_fcoe(pf);
8380
8381 #endif /* I40E_FCOE */
8382 #ifdef CONFIG_PCI_IOV
8383         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
8384                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
8385                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
8386                 pf->num_req_vfs = min_t(int,
8387                                         pf->hw.func_caps.num_vfs,
8388                                         I40E_MAX_VF_COUNT);
8389         }
8390 #endif /* CONFIG_PCI_IOV */
8391         if (pf->hw.mac.type == I40E_MAC_X722) {
8392                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
8393                              I40E_FLAG_128_QP_RSS_CAPABLE |
8394                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
8395                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
8396                              I40E_FLAG_WB_ON_ITR_CAPABLE |
8397                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE |
8398                              I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
8399         }
8400         pf->eeprom_version = 0xDEAD;
8401         pf->lan_veb = I40E_NO_VEB;
8402         pf->lan_vsi = I40E_NO_VSI;
8403
8404         /* By default FW has this off for performance reasons */
8405         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
8406
8407         /* set up queue assignment tracking */
8408         size = sizeof(struct i40e_lump_tracking)
8409                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8410         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8411         if (!pf->qp_pile) {
8412                 err = -ENOMEM;
8413                 goto sw_init_done;
8414         }
8415         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8416         pf->qp_pile->search_hint = 0;
8417
8418         pf->tx_timeout_recovery_level = 1;
8419
8420         mutex_init(&pf->switch_mutex);
8421
8422         /* If NPAR is enabled nudge the Tx scheduler */
8423         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8424                 i40e_set_npar_bw_setting(pf);
8425
8426 sw_init_done:
8427         return err;
8428 }
8429
8430 /**
8431  * i40e_set_ntuple - set the ntuple feature flag and take action
8432  * @pf: board private structure to initialize
8433  * @features: the feature set that the stack is suggesting
8434  *
8435  * returns a bool to indicate if reset needs to happen
8436  **/
8437 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8438 {
8439         bool need_reset = false;
8440
8441         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8442          * the state changed, we need to reset.
8443          */
8444         if (features & NETIF_F_NTUPLE) {
8445                 /* Enable filters and mark for reset */
8446                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8447                         need_reset = true;
8448                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8449         } else {
8450                 /* turn off filters, mark for reset and clear SW filter list */
8451                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8452                         need_reset = true;
8453                         i40e_fdir_filter_exit(pf);
8454                 }
8455                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8456                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8457                 /* reset fd counters */
8458                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8459                 pf->fdir_pf_active_filters = 0;
8460                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8461                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8462                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8463                 /* if ATR was auto disabled it can be re-enabled. */
8464                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8465                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
8466                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8467         }
8468         return need_reset;
8469 }
8470
8471 /**
8472  * i40e_set_features - set the netdev feature flags
8473  * @netdev: ptr to the netdev being adjusted
8474  * @features: the feature set that the stack is suggesting
8475  **/
8476 static int i40e_set_features(struct net_device *netdev,
8477                              netdev_features_t features)
8478 {
8479         struct i40e_netdev_priv *np = netdev_priv(netdev);
8480         struct i40e_vsi *vsi = np->vsi;
8481         struct i40e_pf *pf = vsi->back;
8482         bool need_reset;
8483
8484         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8485                 i40e_vlan_stripping_enable(vsi);
8486         else
8487                 i40e_vlan_stripping_disable(vsi);
8488
8489         need_reset = i40e_set_ntuple(pf, features);
8490
8491         if (need_reset)
8492                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8493
8494         return 0;
8495 }
8496
8497 #if IS_ENABLED(CONFIG_VXLAN) || IS_ENABLED(CONFIG_GENEVE)
8498 /**
8499  * i40e_get_udp_port_idx - Lookup a possibly offloaded for Rx UDP port
8500  * @pf: board private structure
8501  * @port: The UDP port to look up
8502  *
8503  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8504  **/
8505 static u8 i40e_get_udp_port_idx(struct i40e_pf *pf, __be16 port)
8506 {
8507         u8 i;
8508
8509         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8510                 if (pf->udp_ports[i].index == port)
8511                         return i;
8512         }
8513
8514         return i;
8515 }
8516
8517 #endif
8518 /**
8519  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
8520  * @netdev: This physical port's netdev
8521  * @sa_family: Socket Family that VXLAN is notifying us about
8522  * @port: New UDP port number that VXLAN started listening to
8523  **/
8524 static void i40e_add_vxlan_port(struct net_device *netdev,
8525                                 sa_family_t sa_family, __be16 port)
8526 {
8527 #if IS_ENABLED(CONFIG_VXLAN)
8528         struct i40e_netdev_priv *np = netdev_priv(netdev);
8529         struct i40e_vsi *vsi = np->vsi;
8530         struct i40e_pf *pf = vsi->back;
8531         u8 next_idx;
8532         u8 idx;
8533
8534         if (sa_family == AF_INET6)
8535                 return;
8536
8537         idx = i40e_get_udp_port_idx(pf, port);
8538
8539         /* Check if port already exists */
8540         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8541                 netdev_info(netdev, "vxlan port %d already offloaded\n",
8542                             ntohs(port));
8543                 return;
8544         }
8545
8546         /* Now check if there is space to add the new port */
8547         next_idx = i40e_get_udp_port_idx(pf, 0);
8548
8549         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8550                 netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
8551                             ntohs(port));
8552                 return;
8553         }
8554
8555         /* New port: add it and mark its index in the bitmap */
8556         pf->udp_ports[next_idx].index = port;
8557         pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_VXLAN;
8558         pf->pending_udp_bitmap |= BIT_ULL(next_idx);
8559         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8560 #endif
8561 }
8562
8563 /**
8564  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
8565  * @netdev: This physical port's netdev
8566  * @sa_family: Socket Family that VXLAN is notifying us about
8567  * @port: UDP port number that VXLAN stopped listening to
8568  **/
8569 static void i40e_del_vxlan_port(struct net_device *netdev,
8570                                 sa_family_t sa_family, __be16 port)
8571 {
8572 #if IS_ENABLED(CONFIG_VXLAN)
8573         struct i40e_netdev_priv *np = netdev_priv(netdev);
8574         struct i40e_vsi *vsi = np->vsi;
8575         struct i40e_pf *pf = vsi->back;
8576         u8 idx;
8577
8578         if (sa_family == AF_INET6)
8579                 return;
8580
8581         idx = i40e_get_udp_port_idx(pf, port);
8582
8583         /* Check if port already exists */
8584         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8585                 /* if port exists, set it to 0 (mark for deletion)
8586                  * and make it pending
8587                  */
8588                 pf->udp_ports[idx].index = 0;
8589                 pf->pending_udp_bitmap |= BIT_ULL(idx);
8590                 pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8591         } else {
8592                 netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
8593                             ntohs(port));
8594         }
8595 #endif
8596 }
8597
8598 /**
8599  * i40e_add_geneve_port - Get notifications about GENEVE ports that come up
8600  * @netdev: This physical port's netdev
8601  * @sa_family: Socket Family that GENEVE is notifying us about
8602  * @port: New UDP port number that GENEVE started listening to
8603  **/
8604 static void i40e_add_geneve_port(struct net_device *netdev,
8605                                  sa_family_t sa_family, __be16 port)
8606 {
8607 #if IS_ENABLED(CONFIG_GENEVE)
8608         struct i40e_netdev_priv *np = netdev_priv(netdev);
8609         struct i40e_vsi *vsi = np->vsi;
8610         struct i40e_pf *pf = vsi->back;
8611         u8 next_idx;
8612         u8 idx;
8613
8614         if (sa_family == AF_INET6)
8615                 return;
8616
8617         idx = i40e_get_udp_port_idx(pf, port);
8618
8619         /* Check if port already exists */
8620         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8621                 netdev_info(netdev, "udp port %d already offloaded\n",
8622                             ntohs(port));
8623                 return;
8624         }
8625
8626         /* Now check if there is space to add the new port */
8627         next_idx = i40e_get_udp_port_idx(pf, 0);
8628
8629         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8630                 netdev_info(netdev, "maximum number of UDP ports reached, not adding port %d\n",
8631                             ntohs(port));
8632                 return;
8633         }
8634
8635         /* New port: add it and mark its index in the bitmap */
8636         pf->udp_ports[next_idx].index = port;
8637         pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_NGE;
8638         pf->pending_udp_bitmap |= BIT_ULL(next_idx);
8639         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8640
8641         dev_info(&pf->pdev->dev, "adding geneve port %d\n", ntohs(port));
8642 #endif
8643 }
8644
8645 /**
8646  * i40e_del_geneve_port - Get notifications about GENEVE ports that go away
8647  * @netdev: This physical port's netdev
8648  * @sa_family: Socket Family that GENEVE is notifying us about
8649  * @port: UDP port number that GENEVE stopped listening to
8650  **/
8651 static void i40e_del_geneve_port(struct net_device *netdev,
8652                                  sa_family_t sa_family, __be16 port)
8653 {
8654 #if IS_ENABLED(CONFIG_GENEVE)
8655         struct i40e_netdev_priv *np = netdev_priv(netdev);
8656         struct i40e_vsi *vsi = np->vsi;
8657         struct i40e_pf *pf = vsi->back;
8658         u8 idx;
8659
8660         if (sa_family == AF_INET6)
8661                 return;
8662
8663         idx = i40e_get_udp_port_idx(pf, port);
8664
8665         /* Check if port already exists */
8666         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8667                 /* if port exists, set it to 0 (mark for deletion)
8668                  * and make it pending
8669                  */
8670                 pf->udp_ports[idx].index = 0;
8671                 pf->pending_udp_bitmap |= BIT_ULL(idx);
8672                 pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8673
8674                 dev_info(&pf->pdev->dev, "deleting geneve port %d\n",
8675                          ntohs(port));
8676         } else {
8677                 netdev_warn(netdev, "geneve port %d was not found, not deleting\n",
8678                             ntohs(port));
8679         }
8680 #endif
8681 }
8682
8683 static int i40e_get_phys_port_id(struct net_device *netdev,
8684                                  struct netdev_phys_item_id *ppid)
8685 {
8686         struct i40e_netdev_priv *np = netdev_priv(netdev);
8687         struct i40e_pf *pf = np->vsi->back;
8688         struct i40e_hw *hw = &pf->hw;
8689
8690         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8691                 return -EOPNOTSUPP;
8692
8693         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8694         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8695
8696         return 0;
8697 }
8698
8699 /**
8700  * i40e_ndo_fdb_add - add an entry to the hardware database
8701  * @ndm: the input from the stack
8702  * @tb: pointer to array of nladdr (unused)
8703  * @dev: the net device pointer
8704  * @addr: the MAC address entry being added
8705  * @flags: instructions from stack about fdb operation
8706  */
8707 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8708                             struct net_device *dev,
8709                             const unsigned char *addr, u16 vid,
8710                             u16 flags)
8711 {
8712         struct i40e_netdev_priv *np = netdev_priv(dev);
8713         struct i40e_pf *pf = np->vsi->back;
8714         int err = 0;
8715
8716         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8717                 return -EOPNOTSUPP;
8718
8719         if (vid) {
8720                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8721                 return -EINVAL;
8722         }
8723
8724         /* Hardware does not support aging addresses so if a
8725          * ndm_state is given only allow permanent addresses
8726          */
8727         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8728                 netdev_info(dev, "FDB only supports static addresses\n");
8729                 return -EINVAL;
8730         }
8731
8732         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8733                 err = dev_uc_add_excl(dev, addr);
8734         else if (is_multicast_ether_addr(addr))
8735                 err = dev_mc_add_excl(dev, addr);
8736         else
8737                 err = -EINVAL;
8738
8739         /* Only return duplicate errors if NLM_F_EXCL is set */
8740         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8741                 err = 0;
8742
8743         return err;
8744 }
8745
8746 /**
8747  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8748  * @dev: the netdev being configured
8749  * @nlh: RTNL message
8750  *
8751  * Inserts a new hardware bridge if not already created and
8752  * enables the bridging mode requested (VEB or VEPA). If the
8753  * hardware bridge has already been inserted and the request
8754  * is to change the mode then that requires a PF reset to
8755  * allow rebuild of the components with required hardware
8756  * bridge mode enabled.
8757  **/
8758 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8759                                    struct nlmsghdr *nlh,
8760                                    u16 flags)
8761 {
8762         struct i40e_netdev_priv *np = netdev_priv(dev);
8763         struct i40e_vsi *vsi = np->vsi;
8764         struct i40e_pf *pf = vsi->back;
8765         struct i40e_veb *veb = NULL;
8766         struct nlattr *attr, *br_spec;
8767         int i, rem;
8768
8769         /* Only for PF VSI for now */
8770         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8771                 return -EOPNOTSUPP;
8772
8773         /* Find the HW bridge for PF VSI */
8774         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8775                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8776                         veb = pf->veb[i];
8777         }
8778
8779         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8780
8781         nla_for_each_nested(attr, br_spec, rem) {
8782                 __u16 mode;
8783
8784                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8785                         continue;
8786
8787                 mode = nla_get_u16(attr);
8788                 if ((mode != BRIDGE_MODE_VEPA) &&
8789                     (mode != BRIDGE_MODE_VEB))
8790                         return -EINVAL;
8791
8792                 /* Insert a new HW bridge */
8793                 if (!veb) {
8794                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8795                                              vsi->tc_config.enabled_tc);
8796                         if (veb) {
8797                                 veb->bridge_mode = mode;
8798                                 i40e_config_bridge_mode(veb);
8799                         } else {
8800                                 /* No Bridge HW offload available */
8801                                 return -ENOENT;
8802                         }
8803                         break;
8804                 } else if (mode != veb->bridge_mode) {
8805                         /* Existing HW bridge but different mode needs reset */
8806                         veb->bridge_mode = mode;
8807                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8808                         if (mode == BRIDGE_MODE_VEB)
8809                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8810                         else
8811                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8812                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8813                         break;
8814                 }
8815         }
8816
8817         return 0;
8818 }
8819
8820 /**
8821  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8822  * @skb: skb buff
8823  * @pid: process id
8824  * @seq: RTNL message seq #
8825  * @dev: the netdev being configured
8826  * @filter_mask: unused
8827  * @nlflags: netlink flags passed in
8828  *
8829  * Return the mode in which the hardware bridge is operating in
8830  * i.e VEB or VEPA.
8831  **/
8832 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8833                                    struct net_device *dev,
8834                                    u32 __always_unused filter_mask,
8835                                    int nlflags)
8836 {
8837         struct i40e_netdev_priv *np = netdev_priv(dev);
8838         struct i40e_vsi *vsi = np->vsi;
8839         struct i40e_pf *pf = vsi->back;
8840         struct i40e_veb *veb = NULL;
8841         int i;
8842
8843         /* Only for PF VSI for now */
8844         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8845                 return -EOPNOTSUPP;
8846
8847         /* Find the HW bridge for the PF VSI */
8848         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8849                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8850                         veb = pf->veb[i];
8851         }
8852
8853         if (!veb)
8854                 return 0;
8855
8856         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8857                                        nlflags, 0, 0, filter_mask, NULL);
8858 }
8859
8860 /* Hardware supports L4 tunnel length of 128B (=2^7) which includes
8861  * inner mac plus all inner ethertypes.
8862  */
8863 #define I40E_MAX_TUNNEL_HDR_LEN 128
8864 /**
8865  * i40e_features_check - Validate encapsulated packet conforms to limits
8866  * @skb: skb buff
8867  * @dev: This physical port's netdev
8868  * @features: Offload features that the stack believes apply
8869  **/
8870 static netdev_features_t i40e_features_check(struct sk_buff *skb,
8871                                              struct net_device *dev,
8872                                              netdev_features_t features)
8873 {
8874         if (skb->encapsulation &&
8875             ((skb_inner_network_header(skb) - skb_transport_header(skb)) >
8876              I40E_MAX_TUNNEL_HDR_LEN))
8877                 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
8878
8879         return features;
8880 }
8881
8882 static const struct net_device_ops i40e_netdev_ops = {
8883         .ndo_open               = i40e_open,
8884         .ndo_stop               = i40e_close,
8885         .ndo_start_xmit         = i40e_lan_xmit_frame,
8886         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
8887         .ndo_set_rx_mode        = i40e_set_rx_mode,
8888         .ndo_validate_addr      = eth_validate_addr,
8889         .ndo_set_mac_address    = i40e_set_mac,
8890         .ndo_change_mtu         = i40e_change_mtu,
8891         .ndo_do_ioctl           = i40e_ioctl,
8892         .ndo_tx_timeout         = i40e_tx_timeout,
8893         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
8894         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
8895 #ifdef CONFIG_NET_POLL_CONTROLLER
8896         .ndo_poll_controller    = i40e_netpoll,
8897 #endif
8898         .ndo_setup_tc           = i40e_setup_tc,
8899 #ifdef I40E_FCOE
8900         .ndo_fcoe_enable        = i40e_fcoe_enable,
8901         .ndo_fcoe_disable       = i40e_fcoe_disable,
8902 #endif
8903         .ndo_set_features       = i40e_set_features,
8904         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
8905         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
8906         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
8907         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
8908         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
8909         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
8910 #if IS_ENABLED(CONFIG_VXLAN)
8911         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
8912         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
8913 #endif
8914 #if IS_ENABLED(CONFIG_GENEVE)
8915         .ndo_add_geneve_port    = i40e_add_geneve_port,
8916         .ndo_del_geneve_port    = i40e_del_geneve_port,
8917 #endif
8918         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
8919         .ndo_fdb_add            = i40e_ndo_fdb_add,
8920         .ndo_features_check     = i40e_features_check,
8921         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
8922         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
8923 };
8924
8925 /**
8926  * i40e_config_netdev - Setup the netdev flags
8927  * @vsi: the VSI being configured
8928  *
8929  * Returns 0 on success, negative value on failure
8930  **/
8931 static int i40e_config_netdev(struct i40e_vsi *vsi)
8932 {
8933         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
8934         struct i40e_pf *pf = vsi->back;
8935         struct i40e_hw *hw = &pf->hw;
8936         struct i40e_netdev_priv *np;
8937         struct net_device *netdev;
8938         u8 mac_addr[ETH_ALEN];
8939         int etherdev_size;
8940
8941         etherdev_size = sizeof(struct i40e_netdev_priv);
8942         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
8943         if (!netdev)
8944                 return -ENOMEM;
8945
8946         vsi->netdev = netdev;
8947         np = netdev_priv(netdev);
8948         np->vsi = vsi;
8949
8950         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
8951                                   NETIF_F_RXCSUM         |
8952                                   NETIF_F_GSO_UDP_TUNNEL |
8953                                   NETIF_F_GSO_GRE        |
8954                                   NETIF_F_TSO;
8955
8956         netdev->features = NETIF_F_SG                  |
8957                            NETIF_F_IP_CSUM             |
8958                            NETIF_F_SCTP_CRC            |
8959                            NETIF_F_HIGHDMA             |
8960                            NETIF_F_GSO_UDP_TUNNEL      |
8961                            NETIF_F_GSO_GRE             |
8962                            NETIF_F_HW_VLAN_CTAG_TX     |
8963                            NETIF_F_HW_VLAN_CTAG_RX     |
8964                            NETIF_F_HW_VLAN_CTAG_FILTER |
8965                            NETIF_F_IPV6_CSUM           |
8966                            NETIF_F_TSO                 |
8967                            NETIF_F_TSO_ECN             |
8968                            NETIF_F_TSO6                |
8969                            NETIF_F_RXCSUM              |
8970                            NETIF_F_RXHASH              |
8971                            0;
8972
8973         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
8974                 netdev->features |= NETIF_F_NTUPLE;
8975
8976         /* copy netdev features into list of user selectable features */
8977         netdev->hw_features |= netdev->features;
8978
8979         if (vsi->type == I40E_VSI_MAIN) {
8980                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
8981                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
8982                 /* The following steps are necessary to prevent reception
8983                  * of tagged packets - some older NVM configurations load a
8984                  * default a MAC-VLAN filter that accepts any tagged packet
8985                  * which must be replaced by a normal filter.
8986                  */
8987                 if (!i40e_rm_default_mac_filter(vsi, mac_addr)) {
8988                         spin_lock_bh(&vsi->mac_filter_list_lock);
8989                         i40e_add_filter(vsi, mac_addr,
8990                                         I40E_VLAN_ANY, false, true);
8991                         spin_unlock_bh(&vsi->mac_filter_list_lock);
8992                 }
8993         } else {
8994                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
8995                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
8996                          pf->vsi[pf->lan_vsi]->netdev->name);
8997                 random_ether_addr(mac_addr);
8998
8999                 spin_lock_bh(&vsi->mac_filter_list_lock);
9000                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
9001                 spin_unlock_bh(&vsi->mac_filter_list_lock);
9002         }
9003
9004         spin_lock_bh(&vsi->mac_filter_list_lock);
9005         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
9006         spin_unlock_bh(&vsi->mac_filter_list_lock);
9007
9008         ether_addr_copy(netdev->dev_addr, mac_addr);
9009         ether_addr_copy(netdev->perm_addr, mac_addr);
9010         /* vlan gets same features (except vlan offload)
9011          * after any tweaks for specific VSI types
9012          */
9013         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
9014                                                      NETIF_F_HW_VLAN_CTAG_RX |
9015                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
9016         netdev->priv_flags |= IFF_UNICAST_FLT;
9017         netdev->priv_flags |= IFF_SUPP_NOFCS;
9018         /* Setup netdev TC information */
9019         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
9020
9021         netdev->netdev_ops = &i40e_netdev_ops;
9022         netdev->watchdog_timeo = 5 * HZ;
9023         i40e_set_ethtool_ops(netdev);
9024 #ifdef I40E_FCOE
9025         i40e_fcoe_config_netdev(netdev, vsi);
9026 #endif
9027
9028         return 0;
9029 }
9030
9031 /**
9032  * i40e_vsi_delete - Delete a VSI from the switch
9033  * @vsi: the VSI being removed
9034  *
9035  * Returns 0 on success, negative value on failure
9036  **/
9037 static void i40e_vsi_delete(struct i40e_vsi *vsi)
9038 {
9039         /* remove default VSI is not allowed */
9040         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
9041                 return;
9042
9043         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
9044 }
9045
9046 /**
9047  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
9048  * @vsi: the VSI being queried
9049  *
9050  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
9051  **/
9052 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
9053 {
9054         struct i40e_veb *veb;
9055         struct i40e_pf *pf = vsi->back;
9056
9057         /* Uplink is not a bridge so default to VEB */
9058         if (vsi->veb_idx == I40E_NO_VEB)
9059                 return 1;
9060
9061         veb = pf->veb[vsi->veb_idx];
9062         if (!veb) {
9063                 dev_info(&pf->pdev->dev,
9064                          "There is no veb associated with the bridge\n");
9065                 return -ENOENT;
9066         }
9067
9068         /* Uplink is a bridge in VEPA mode */
9069         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
9070                 return 0;
9071         } else {
9072                 /* Uplink is a bridge in VEB mode */
9073                 return 1;
9074         }
9075
9076         /* VEPA is now default bridge, so return 0 */
9077         return 0;
9078 }
9079
9080 /**
9081  * i40e_add_vsi - Add a VSI to the switch
9082  * @vsi: the VSI being configured
9083  *
9084  * This initializes a VSI context depending on the VSI type to be added and
9085  * passes it down to the add_vsi aq command.
9086  **/
9087 static int i40e_add_vsi(struct i40e_vsi *vsi)
9088 {
9089         int ret = -ENODEV;
9090         u8 laa_macaddr[ETH_ALEN];
9091         bool found_laa_mac_filter = false;
9092         struct i40e_pf *pf = vsi->back;
9093         struct i40e_hw *hw = &pf->hw;
9094         struct i40e_vsi_context ctxt;
9095         struct i40e_mac_filter *f, *ftmp;
9096
9097         u8 enabled_tc = 0x1; /* TC0 enabled */
9098         int f_count = 0;
9099
9100         memset(&ctxt, 0, sizeof(ctxt));
9101         switch (vsi->type) {
9102         case I40E_VSI_MAIN:
9103                 /* The PF's main VSI is already setup as part of the
9104                  * device initialization, so we'll not bother with
9105                  * the add_vsi call, but we will retrieve the current
9106                  * VSI context.
9107                  */
9108                 ctxt.seid = pf->main_vsi_seid;
9109                 ctxt.pf_num = pf->hw.pf_id;
9110                 ctxt.vf_num = 0;
9111                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
9112                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9113                 if (ret) {
9114                         dev_info(&pf->pdev->dev,
9115                                  "couldn't get PF vsi config, err %s aq_err %s\n",
9116                                  i40e_stat_str(&pf->hw, ret),
9117                                  i40e_aq_str(&pf->hw,
9118                                              pf->hw.aq.asq_last_status));
9119                         return -ENOENT;
9120                 }
9121                 vsi->info = ctxt.info;
9122                 vsi->info.valid_sections = 0;
9123
9124                 vsi->seid = ctxt.seid;
9125                 vsi->id = ctxt.vsi_number;
9126
9127                 enabled_tc = i40e_pf_get_tc_map(pf);
9128
9129                 /* MFP mode setup queue map and update VSI */
9130                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
9131                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
9132                         memset(&ctxt, 0, sizeof(ctxt));
9133                         ctxt.seid = pf->main_vsi_seid;
9134                         ctxt.pf_num = pf->hw.pf_id;
9135                         ctxt.vf_num = 0;
9136                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
9137                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
9138                         if (ret) {
9139                                 dev_info(&pf->pdev->dev,
9140                                          "update vsi failed, err %s aq_err %s\n",
9141                                          i40e_stat_str(&pf->hw, ret),
9142                                          i40e_aq_str(&pf->hw,
9143                                                     pf->hw.aq.asq_last_status));
9144                                 ret = -ENOENT;
9145                                 goto err;
9146                         }
9147                         /* update the local VSI info queue map */
9148                         i40e_vsi_update_queue_map(vsi, &ctxt);
9149                         vsi->info.valid_sections = 0;
9150                 } else {
9151                         /* Default/Main VSI is only enabled for TC0
9152                          * reconfigure it to enable all TCs that are
9153                          * available on the port in SFP mode.
9154                          * For MFP case the iSCSI PF would use this
9155                          * flow to enable LAN+iSCSI TC.
9156                          */
9157                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
9158                         if (ret) {
9159                                 dev_info(&pf->pdev->dev,
9160                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
9161                                          enabled_tc,
9162                                          i40e_stat_str(&pf->hw, ret),
9163                                          i40e_aq_str(&pf->hw,
9164                                                     pf->hw.aq.asq_last_status));
9165                                 ret = -ENOENT;
9166                         }
9167                 }
9168                 break;
9169
9170         case I40E_VSI_FDIR:
9171                 ctxt.pf_num = hw->pf_id;
9172                 ctxt.vf_num = 0;
9173                 ctxt.uplink_seid = vsi->uplink_seid;
9174                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9175                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9176                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
9177                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
9178                         ctxt.info.valid_sections |=
9179                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9180                         ctxt.info.switch_id =
9181                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9182                 }
9183                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9184                 break;
9185
9186         case I40E_VSI_VMDQ2:
9187                 ctxt.pf_num = hw->pf_id;
9188                 ctxt.vf_num = 0;
9189                 ctxt.uplink_seid = vsi->uplink_seid;
9190                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9191                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
9192
9193                 /* This VSI is connected to VEB so the switch_id
9194                  * should be set to zero by default.
9195                  */
9196                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9197                         ctxt.info.valid_sections |=
9198                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9199                         ctxt.info.switch_id =
9200                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9201                 }
9202
9203                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9204                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9205                 break;
9206
9207         case I40E_VSI_SRIOV:
9208                 ctxt.pf_num = hw->pf_id;
9209                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
9210                 ctxt.uplink_seid = vsi->uplink_seid;
9211                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9212                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
9213
9214                 /* This VSI is connected to VEB so the switch_id
9215                  * should be set to zero by default.
9216                  */
9217                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9218                         ctxt.info.valid_sections |=
9219                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9220                         ctxt.info.switch_id =
9221                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9222                 }
9223
9224                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
9225                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
9226                 if (pf->vf[vsi->vf_id].spoofchk) {
9227                         ctxt.info.valid_sections |=
9228                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
9229                         ctxt.info.sec_flags |=
9230                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
9231                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
9232                 }
9233                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9234                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9235                 break;
9236
9237 #ifdef I40E_FCOE
9238         case I40E_VSI_FCOE:
9239                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
9240                 if (ret) {
9241                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
9242                         return ret;
9243                 }
9244                 break;
9245
9246 #endif /* I40E_FCOE */
9247         default:
9248                 return -ENODEV;
9249         }
9250
9251         if (vsi->type != I40E_VSI_MAIN) {
9252                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
9253                 if (ret) {
9254                         dev_info(&vsi->back->pdev->dev,
9255                                  "add vsi failed, err %s aq_err %s\n",
9256                                  i40e_stat_str(&pf->hw, ret),
9257                                  i40e_aq_str(&pf->hw,
9258                                              pf->hw.aq.asq_last_status));
9259                         ret = -ENOENT;
9260                         goto err;
9261                 }
9262                 vsi->info = ctxt.info;
9263                 vsi->info.valid_sections = 0;
9264                 vsi->seid = ctxt.seid;
9265                 vsi->id = ctxt.vsi_number;
9266         }
9267
9268         spin_lock_bh(&vsi->mac_filter_list_lock);
9269         /* If macvlan filters already exist, force them to get loaded */
9270         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
9271                 f->changed = true;
9272                 f_count++;
9273
9274                 /* Expected to have only one MAC filter entry for LAA in list */
9275                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
9276                         ether_addr_copy(laa_macaddr, f->macaddr);
9277                         found_laa_mac_filter = true;
9278                 }
9279         }
9280         spin_unlock_bh(&vsi->mac_filter_list_lock);
9281
9282         if (found_laa_mac_filter) {
9283                 struct i40e_aqc_remove_macvlan_element_data element;
9284
9285                 memset(&element, 0, sizeof(element));
9286                 ether_addr_copy(element.mac_addr, laa_macaddr);
9287                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
9288                 ret = i40e_aq_remove_macvlan(hw, vsi->seid,
9289                                              &element, 1, NULL);
9290                 if (ret) {
9291                         /* some older FW has a different default */
9292                         element.flags |=
9293                                        I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
9294                         i40e_aq_remove_macvlan(hw, vsi->seid,
9295                                                &element, 1, NULL);
9296                 }
9297
9298                 i40e_aq_mac_address_write(hw,
9299                                           I40E_AQC_WRITE_TYPE_LAA_WOL,
9300                                           laa_macaddr, NULL);
9301         }
9302
9303         if (f_count) {
9304                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
9305                 pf->flags |= I40E_FLAG_FILTER_SYNC;
9306         }
9307
9308         /* Update VSI BW information */
9309         ret = i40e_vsi_get_bw_info(vsi);
9310         if (ret) {
9311                 dev_info(&pf->pdev->dev,
9312                          "couldn't get vsi bw info, err %s aq_err %s\n",
9313                          i40e_stat_str(&pf->hw, ret),
9314                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9315                 /* VSI is already added so not tearing that up */
9316                 ret = 0;
9317         }
9318
9319 err:
9320         return ret;
9321 }
9322
9323 /**
9324  * i40e_vsi_release - Delete a VSI and free its resources
9325  * @vsi: the VSI being removed
9326  *
9327  * Returns 0 on success or < 0 on error
9328  **/
9329 int i40e_vsi_release(struct i40e_vsi *vsi)
9330 {
9331         struct i40e_mac_filter *f, *ftmp;
9332         struct i40e_veb *veb = NULL;
9333         struct i40e_pf *pf;
9334         u16 uplink_seid;
9335         int i, n;
9336
9337         pf = vsi->back;
9338
9339         /* release of a VEB-owner or last VSI is not allowed */
9340         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
9341                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
9342                          vsi->seid, vsi->uplink_seid);
9343                 return -ENODEV;
9344         }
9345         if (vsi == pf->vsi[pf->lan_vsi] &&
9346             !test_bit(__I40E_DOWN, &pf->state)) {
9347                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
9348                 return -ENODEV;
9349         }
9350
9351         uplink_seid = vsi->uplink_seid;
9352         if (vsi->type != I40E_VSI_SRIOV) {
9353                 if (vsi->netdev_registered) {
9354                         vsi->netdev_registered = false;
9355                         if (vsi->netdev) {
9356                                 /* results in a call to i40e_close() */
9357                                 unregister_netdev(vsi->netdev);
9358                         }
9359                 } else {
9360                         i40e_vsi_close(vsi);
9361                 }
9362                 i40e_vsi_disable_irq(vsi);
9363         }
9364
9365         spin_lock_bh(&vsi->mac_filter_list_lock);
9366         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
9367                 i40e_del_filter(vsi, f->macaddr, f->vlan,
9368                                 f->is_vf, f->is_netdev);
9369         spin_unlock_bh(&vsi->mac_filter_list_lock);
9370
9371         i40e_sync_vsi_filters(vsi);
9372
9373         i40e_vsi_delete(vsi);
9374         i40e_vsi_free_q_vectors(vsi);
9375         if (vsi->netdev) {
9376                 free_netdev(vsi->netdev);
9377                 vsi->netdev = NULL;
9378         }
9379         i40e_vsi_clear_rings(vsi);
9380         i40e_vsi_clear(vsi);
9381
9382         /* If this was the last thing on the VEB, except for the
9383          * controlling VSI, remove the VEB, which puts the controlling
9384          * VSI onto the next level down in the switch.
9385          *
9386          * Well, okay, there's one more exception here: don't remove
9387          * the orphan VEBs yet.  We'll wait for an explicit remove request
9388          * from up the network stack.
9389          */
9390         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
9391                 if (pf->vsi[i] &&
9392                     pf->vsi[i]->uplink_seid == uplink_seid &&
9393                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9394                         n++;      /* count the VSIs */
9395                 }
9396         }
9397         for (i = 0; i < I40E_MAX_VEB; i++) {
9398                 if (!pf->veb[i])
9399                         continue;
9400                 if (pf->veb[i]->uplink_seid == uplink_seid)
9401                         n++;     /* count the VEBs */
9402                 if (pf->veb[i]->seid == uplink_seid)
9403                         veb = pf->veb[i];
9404         }
9405         if (n == 0 && veb && veb->uplink_seid != 0)
9406                 i40e_veb_release(veb);
9407
9408         return 0;
9409 }
9410
9411 /**
9412  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
9413  * @vsi: ptr to the VSI
9414  *
9415  * This should only be called after i40e_vsi_mem_alloc() which allocates the
9416  * corresponding SW VSI structure and initializes num_queue_pairs for the
9417  * newly allocated VSI.
9418  *
9419  * Returns 0 on success or negative on failure
9420  **/
9421 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
9422 {
9423         int ret = -ENOENT;
9424         struct i40e_pf *pf = vsi->back;
9425
9426         if (vsi->q_vectors[0]) {
9427                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
9428                          vsi->seid);
9429                 return -EEXIST;
9430         }
9431
9432         if (vsi->base_vector) {
9433                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
9434                          vsi->seid, vsi->base_vector);
9435                 return -EEXIST;
9436         }
9437
9438         ret = i40e_vsi_alloc_q_vectors(vsi);
9439         if (ret) {
9440                 dev_info(&pf->pdev->dev,
9441                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
9442                          vsi->num_q_vectors, vsi->seid, ret);
9443                 vsi->num_q_vectors = 0;
9444                 goto vector_setup_out;
9445         }
9446
9447         /* In Legacy mode, we do not have to get any other vector since we
9448          * piggyback on the misc/ICR0 for queue interrupts.
9449         */
9450         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
9451                 return ret;
9452         if (vsi->num_q_vectors)
9453                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
9454                                                  vsi->num_q_vectors, vsi->idx);
9455         if (vsi->base_vector < 0) {
9456                 dev_info(&pf->pdev->dev,
9457                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
9458                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
9459                 i40e_vsi_free_q_vectors(vsi);
9460                 ret = -ENOENT;
9461                 goto vector_setup_out;
9462         }
9463
9464 vector_setup_out:
9465         return ret;
9466 }
9467
9468 /**
9469  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
9470  * @vsi: pointer to the vsi.
9471  *
9472  * This re-allocates a vsi's queue resources.
9473  *
9474  * Returns pointer to the successfully allocated and configured VSI sw struct
9475  * on success, otherwise returns NULL on failure.
9476  **/
9477 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
9478 {
9479         struct i40e_pf *pf = vsi->back;
9480         u8 enabled_tc;
9481         int ret;
9482
9483         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
9484         i40e_vsi_clear_rings(vsi);
9485
9486         i40e_vsi_free_arrays(vsi, false);
9487         i40e_set_num_rings_in_vsi(vsi);
9488         ret = i40e_vsi_alloc_arrays(vsi, false);
9489         if (ret)
9490                 goto err_vsi;
9491
9492         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
9493         if (ret < 0) {
9494                 dev_info(&pf->pdev->dev,
9495                          "failed to get tracking for %d queues for VSI %d err %d\n",
9496                          vsi->alloc_queue_pairs, vsi->seid, ret);
9497                 goto err_vsi;
9498         }
9499         vsi->base_queue = ret;
9500
9501         /* Update the FW view of the VSI. Force a reset of TC and queue
9502          * layout configurations.
9503          */
9504         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9505         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9506         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9507         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9508
9509         /* assign it some queues */
9510         ret = i40e_alloc_rings(vsi);
9511         if (ret)
9512                 goto err_rings;
9513
9514         /* map all of the rings to the q_vectors */
9515         i40e_vsi_map_rings_to_vectors(vsi);
9516         return vsi;
9517
9518 err_rings:
9519         i40e_vsi_free_q_vectors(vsi);
9520         if (vsi->netdev_registered) {
9521                 vsi->netdev_registered = false;
9522                 unregister_netdev(vsi->netdev);
9523                 free_netdev(vsi->netdev);
9524                 vsi->netdev = NULL;
9525         }
9526         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9527 err_vsi:
9528         i40e_vsi_clear(vsi);
9529         return NULL;
9530 }
9531
9532 /**
9533  * i40e_macaddr_init - explicitly write the mac address filters.
9534  *
9535  * @vsi: pointer to the vsi.
9536  * @macaddr: the MAC address
9537  *
9538  * This is needed when the macaddr has been obtained by other
9539  * means than the default, e.g., from Open Firmware or IDPROM.
9540  * Returns 0 on success, negative on failure
9541  **/
9542 static int i40e_macaddr_init(struct i40e_vsi *vsi, u8 *macaddr)
9543 {
9544         int ret;
9545         struct i40e_aqc_add_macvlan_element_data element;
9546
9547         ret = i40e_aq_mac_address_write(&vsi->back->hw,
9548                                         I40E_AQC_WRITE_TYPE_LAA_WOL,
9549                                         macaddr, NULL);
9550         if (ret) {
9551                 dev_info(&vsi->back->pdev->dev,
9552                          "Addr change for VSI failed: %d\n", ret);
9553                 return -EADDRNOTAVAIL;
9554         }
9555
9556         memset(&element, 0, sizeof(element));
9557         ether_addr_copy(element.mac_addr, macaddr);
9558         element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
9559         ret = i40e_aq_add_macvlan(&vsi->back->hw, vsi->seid, &element, 1, NULL);
9560         if (ret) {
9561                 dev_info(&vsi->back->pdev->dev,
9562                          "add filter failed err %s aq_err %s\n",
9563                          i40e_stat_str(&vsi->back->hw, ret),
9564                          i40e_aq_str(&vsi->back->hw,
9565                                      vsi->back->hw.aq.asq_last_status));
9566         }
9567         return ret;
9568 }
9569
9570 /**
9571  * i40e_vsi_setup - Set up a VSI by a given type
9572  * @pf: board private structure
9573  * @type: VSI type
9574  * @uplink_seid: the switch element to link to
9575  * @param1: usage depends upon VSI type. For VF types, indicates VF id
9576  *
9577  * This allocates the sw VSI structure and its queue resources, then add a VSI
9578  * to the identified VEB.
9579  *
9580  * Returns pointer to the successfully allocated and configure VSI sw struct on
9581  * success, otherwise returns NULL on failure.
9582  **/
9583 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9584                                 u16 uplink_seid, u32 param1)
9585 {
9586         struct i40e_vsi *vsi = NULL;
9587         struct i40e_veb *veb = NULL;
9588         int ret, i;
9589         int v_idx;
9590
9591         /* The requested uplink_seid must be either
9592          *     - the PF's port seid
9593          *              no VEB is needed because this is the PF
9594          *              or this is a Flow Director special case VSI
9595          *     - seid of an existing VEB
9596          *     - seid of a VSI that owns an existing VEB
9597          *     - seid of a VSI that doesn't own a VEB
9598          *              a new VEB is created and the VSI becomes the owner
9599          *     - seid of the PF VSI, which is what creates the first VEB
9600          *              this is a special case of the previous
9601          *
9602          * Find which uplink_seid we were given and create a new VEB if needed
9603          */
9604         for (i = 0; i < I40E_MAX_VEB; i++) {
9605                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9606                         veb = pf->veb[i];
9607                         break;
9608                 }
9609         }
9610
9611         if (!veb && uplink_seid != pf->mac_seid) {
9612
9613                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9614                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9615                                 vsi = pf->vsi[i];
9616                                 break;
9617                         }
9618                 }
9619                 if (!vsi) {
9620                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9621                                  uplink_seid);
9622                         return NULL;
9623                 }
9624
9625                 if (vsi->uplink_seid == pf->mac_seid)
9626                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9627                                              vsi->tc_config.enabled_tc);
9628                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9629                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9630                                              vsi->tc_config.enabled_tc);
9631                 if (veb) {
9632                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9633                                 dev_info(&vsi->back->pdev->dev,
9634                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9635                                 return NULL;
9636                         }
9637                         /* We come up by default in VEPA mode if SRIOV is not
9638                          * already enabled, in which case we can't force VEPA
9639                          * mode.
9640                          */
9641                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9642                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9643                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9644                         }
9645                         i40e_config_bridge_mode(veb);
9646                 }
9647                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9648                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9649                                 veb = pf->veb[i];
9650                 }
9651                 if (!veb) {
9652                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9653                         return NULL;
9654                 }
9655
9656                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9657                 uplink_seid = veb->seid;
9658         }
9659
9660         /* get vsi sw struct */
9661         v_idx = i40e_vsi_mem_alloc(pf, type);
9662         if (v_idx < 0)
9663                 goto err_alloc;
9664         vsi = pf->vsi[v_idx];
9665         if (!vsi)
9666                 goto err_alloc;
9667         vsi->type = type;
9668         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9669
9670         if (type == I40E_VSI_MAIN)
9671                 pf->lan_vsi = v_idx;
9672         else if (type == I40E_VSI_SRIOV)
9673                 vsi->vf_id = param1;
9674         /* assign it some queues */
9675         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9676                                 vsi->idx);
9677         if (ret < 0) {
9678                 dev_info(&pf->pdev->dev,
9679                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9680                          vsi->alloc_queue_pairs, vsi->seid, ret);
9681                 goto err_vsi;
9682         }
9683         vsi->base_queue = ret;
9684
9685         /* get a VSI from the hardware */
9686         vsi->uplink_seid = uplink_seid;
9687         ret = i40e_add_vsi(vsi);
9688         if (ret)
9689                 goto err_vsi;
9690
9691         switch (vsi->type) {
9692         /* setup the netdev if needed */
9693         case I40E_VSI_MAIN:
9694                 /* Apply relevant filters if a platform-specific mac
9695                  * address was selected.
9696                  */
9697                 if (!!(pf->flags & I40E_FLAG_PF_MAC)) {
9698                         ret = i40e_macaddr_init(vsi, pf->hw.mac.addr);
9699                         if (ret) {
9700                                 dev_warn(&pf->pdev->dev,
9701                                          "could not set up macaddr; err %d\n",
9702                                          ret);
9703                         }
9704                 }
9705         case I40E_VSI_VMDQ2:
9706         case I40E_VSI_FCOE:
9707                 ret = i40e_config_netdev(vsi);
9708                 if (ret)
9709                         goto err_netdev;
9710                 ret = register_netdev(vsi->netdev);
9711                 if (ret)
9712                         goto err_netdev;
9713                 vsi->netdev_registered = true;
9714                 netif_carrier_off(vsi->netdev);
9715 #ifdef CONFIG_I40E_DCB
9716                 /* Setup DCB netlink interface */
9717                 i40e_dcbnl_setup(vsi);
9718 #endif /* CONFIG_I40E_DCB */
9719                 /* fall through */
9720
9721         case I40E_VSI_FDIR:
9722                 /* set up vectors and rings if needed */
9723                 ret = i40e_vsi_setup_vectors(vsi);
9724                 if (ret)
9725                         goto err_msix;
9726
9727                 ret = i40e_alloc_rings(vsi);
9728                 if (ret)
9729                         goto err_rings;
9730
9731                 /* map all of the rings to the q_vectors */
9732                 i40e_vsi_map_rings_to_vectors(vsi);
9733
9734                 i40e_vsi_reset_stats(vsi);
9735                 break;
9736
9737         default:
9738                 /* no netdev or rings for the other VSI types */
9739                 break;
9740         }
9741
9742         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9743             (vsi->type == I40E_VSI_VMDQ2)) {
9744                 ret = i40e_vsi_config_rss(vsi);
9745         }
9746         return vsi;
9747
9748 err_rings:
9749         i40e_vsi_free_q_vectors(vsi);
9750 err_msix:
9751         if (vsi->netdev_registered) {
9752                 vsi->netdev_registered = false;
9753                 unregister_netdev(vsi->netdev);
9754                 free_netdev(vsi->netdev);
9755                 vsi->netdev = NULL;
9756         }
9757 err_netdev:
9758         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9759 err_vsi:
9760         i40e_vsi_clear(vsi);
9761 err_alloc:
9762         return NULL;
9763 }
9764
9765 /**
9766  * i40e_veb_get_bw_info - Query VEB BW information
9767  * @veb: the veb to query
9768  *
9769  * Query the Tx scheduler BW configuration data for given VEB
9770  **/
9771 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9772 {
9773         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9774         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9775         struct i40e_pf *pf = veb->pf;
9776         struct i40e_hw *hw = &pf->hw;
9777         u32 tc_bw_max;
9778         int ret = 0;
9779         int i;
9780
9781         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9782                                                   &bw_data, NULL);
9783         if (ret) {
9784                 dev_info(&pf->pdev->dev,
9785                          "query veb bw config failed, err %s aq_err %s\n",
9786                          i40e_stat_str(&pf->hw, ret),
9787                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9788                 goto out;
9789         }
9790
9791         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9792                                                    &ets_data, NULL);
9793         if (ret) {
9794                 dev_info(&pf->pdev->dev,
9795                          "query veb bw ets config failed, err %s aq_err %s\n",
9796                          i40e_stat_str(&pf->hw, ret),
9797                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9798                 goto out;
9799         }
9800
9801         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9802         veb->bw_max_quanta = ets_data.tc_bw_max;
9803         veb->is_abs_credits = bw_data.absolute_credits_enable;
9804         veb->enabled_tc = ets_data.tc_valid_bits;
9805         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9806                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9807         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9808                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9809                 veb->bw_tc_limit_credits[i] =
9810                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9811                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9812         }
9813
9814 out:
9815         return ret;
9816 }
9817
9818 /**
9819  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9820  * @pf: board private structure
9821  *
9822  * On error: returns error code (negative)
9823  * On success: returns vsi index in PF (positive)
9824  **/
9825 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9826 {
9827         int ret = -ENOENT;
9828         struct i40e_veb *veb;
9829         int i;
9830
9831         /* Need to protect the allocation of switch elements at the PF level */
9832         mutex_lock(&pf->switch_mutex);
9833
9834         /* VEB list may be fragmented if VEB creation/destruction has
9835          * been happening.  We can afford to do a quick scan to look
9836          * for any free slots in the list.
9837          *
9838          * find next empty veb slot, looping back around if necessary
9839          */
9840         i = 0;
9841         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9842                 i++;
9843         if (i >= I40E_MAX_VEB) {
9844                 ret = -ENOMEM;
9845                 goto err_alloc_veb;  /* out of VEB slots! */
9846         }
9847
9848         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9849         if (!veb) {
9850                 ret = -ENOMEM;
9851                 goto err_alloc_veb;
9852         }
9853         veb->pf = pf;
9854         veb->idx = i;
9855         veb->enabled_tc = 1;
9856
9857         pf->veb[i] = veb;
9858         ret = i;
9859 err_alloc_veb:
9860         mutex_unlock(&pf->switch_mutex);
9861         return ret;
9862 }
9863
9864 /**
9865  * i40e_switch_branch_release - Delete a branch of the switch tree
9866  * @branch: where to start deleting
9867  *
9868  * This uses recursion to find the tips of the branch to be
9869  * removed, deleting until we get back to and can delete this VEB.
9870  **/
9871 static void i40e_switch_branch_release(struct i40e_veb *branch)
9872 {
9873         struct i40e_pf *pf = branch->pf;
9874         u16 branch_seid = branch->seid;
9875         u16 veb_idx = branch->idx;
9876         int i;
9877
9878         /* release any VEBs on this VEB - RECURSION */
9879         for (i = 0; i < I40E_MAX_VEB; i++) {
9880                 if (!pf->veb[i])
9881                         continue;
9882                 if (pf->veb[i]->uplink_seid == branch->seid)
9883                         i40e_switch_branch_release(pf->veb[i]);
9884         }
9885
9886         /* Release the VSIs on this VEB, but not the owner VSI.
9887          *
9888          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
9889          *       the VEB itself, so don't use (*branch) after this loop.
9890          */
9891         for (i = 0; i < pf->num_alloc_vsi; i++) {
9892                 if (!pf->vsi[i])
9893                         continue;
9894                 if (pf->vsi[i]->uplink_seid == branch_seid &&
9895                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9896                         i40e_vsi_release(pf->vsi[i]);
9897                 }
9898         }
9899
9900         /* There's one corner case where the VEB might not have been
9901          * removed, so double check it here and remove it if needed.
9902          * This case happens if the veb was created from the debugfs
9903          * commands and no VSIs were added to it.
9904          */
9905         if (pf->veb[veb_idx])
9906                 i40e_veb_release(pf->veb[veb_idx]);
9907 }
9908
9909 /**
9910  * i40e_veb_clear - remove veb struct
9911  * @veb: the veb to remove
9912  **/
9913 static void i40e_veb_clear(struct i40e_veb *veb)
9914 {
9915         if (!veb)
9916                 return;
9917
9918         if (veb->pf) {
9919                 struct i40e_pf *pf = veb->pf;
9920
9921                 mutex_lock(&pf->switch_mutex);
9922                 if (pf->veb[veb->idx] == veb)
9923                         pf->veb[veb->idx] = NULL;
9924                 mutex_unlock(&pf->switch_mutex);
9925         }
9926
9927         kfree(veb);
9928 }
9929
9930 /**
9931  * i40e_veb_release - Delete a VEB and free its resources
9932  * @veb: the VEB being removed
9933  **/
9934 void i40e_veb_release(struct i40e_veb *veb)
9935 {
9936         struct i40e_vsi *vsi = NULL;
9937         struct i40e_pf *pf;
9938         int i, n = 0;
9939
9940         pf = veb->pf;
9941
9942         /* find the remaining VSI and check for extras */
9943         for (i = 0; i < pf->num_alloc_vsi; i++) {
9944                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
9945                         n++;
9946                         vsi = pf->vsi[i];
9947                 }
9948         }
9949         if (n != 1) {
9950                 dev_info(&pf->pdev->dev,
9951                          "can't remove VEB %d with %d VSIs left\n",
9952                          veb->seid, n);
9953                 return;
9954         }
9955
9956         /* move the remaining VSI to uplink veb */
9957         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
9958         if (veb->uplink_seid) {
9959                 vsi->uplink_seid = veb->uplink_seid;
9960                 if (veb->uplink_seid == pf->mac_seid)
9961                         vsi->veb_idx = I40E_NO_VEB;
9962                 else
9963                         vsi->veb_idx = veb->veb_idx;
9964         } else {
9965                 /* floating VEB */
9966                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
9967                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
9968         }
9969
9970         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9971         i40e_veb_clear(veb);
9972 }
9973
9974 /**
9975  * i40e_add_veb - create the VEB in the switch
9976  * @veb: the VEB to be instantiated
9977  * @vsi: the controlling VSI
9978  **/
9979 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
9980 {
9981         struct i40e_pf *pf = veb->pf;
9982         bool is_default = veb->pf->cur_promisc;
9983         bool is_cloud = false;
9984         int ret;
9985
9986         /* get a VEB from the hardware */
9987         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
9988                               veb->enabled_tc, is_default,
9989                               is_cloud, &veb->seid, NULL);
9990         if (ret) {
9991                 dev_info(&pf->pdev->dev,
9992                          "couldn't add VEB, err %s aq_err %s\n",
9993                          i40e_stat_str(&pf->hw, ret),
9994                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9995                 return -EPERM;
9996         }
9997
9998         /* get statistics counter */
9999         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
10000                                          &veb->stats_idx, NULL, NULL, NULL);
10001         if (ret) {
10002                 dev_info(&pf->pdev->dev,
10003                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
10004                          i40e_stat_str(&pf->hw, ret),
10005                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10006                 return -EPERM;
10007         }
10008         ret = i40e_veb_get_bw_info(veb);
10009         if (ret) {
10010                 dev_info(&pf->pdev->dev,
10011                          "couldn't get VEB bw info, err %s aq_err %s\n",
10012                          i40e_stat_str(&pf->hw, ret),
10013                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10014                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10015                 return -ENOENT;
10016         }
10017
10018         vsi->uplink_seid = veb->seid;
10019         vsi->veb_idx = veb->idx;
10020         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
10021
10022         return 0;
10023 }
10024
10025 /**
10026  * i40e_veb_setup - Set up a VEB
10027  * @pf: board private structure
10028  * @flags: VEB setup flags
10029  * @uplink_seid: the switch element to link to
10030  * @vsi_seid: the initial VSI seid
10031  * @enabled_tc: Enabled TC bit-map
10032  *
10033  * This allocates the sw VEB structure and links it into the switch
10034  * It is possible and legal for this to be a duplicate of an already
10035  * existing VEB.  It is also possible for both uplink and vsi seids
10036  * to be zero, in order to create a floating VEB.
10037  *
10038  * Returns pointer to the successfully allocated VEB sw struct on
10039  * success, otherwise returns NULL on failure.
10040  **/
10041 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
10042                                 u16 uplink_seid, u16 vsi_seid,
10043                                 u8 enabled_tc)
10044 {
10045         struct i40e_veb *veb, *uplink_veb = NULL;
10046         int vsi_idx, veb_idx;
10047         int ret;
10048
10049         /* if one seid is 0, the other must be 0 to create a floating relay */
10050         if ((uplink_seid == 0 || vsi_seid == 0) &&
10051             (uplink_seid + vsi_seid != 0)) {
10052                 dev_info(&pf->pdev->dev,
10053                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
10054                          uplink_seid, vsi_seid);
10055                 return NULL;
10056         }
10057
10058         /* make sure there is such a vsi and uplink */
10059         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
10060                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
10061                         break;
10062         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
10063                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
10064                          vsi_seid);
10065                 return NULL;
10066         }
10067
10068         if (uplink_seid && uplink_seid != pf->mac_seid) {
10069                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
10070                         if (pf->veb[veb_idx] &&
10071                             pf->veb[veb_idx]->seid == uplink_seid) {
10072                                 uplink_veb = pf->veb[veb_idx];
10073                                 break;
10074                         }
10075                 }
10076                 if (!uplink_veb) {
10077                         dev_info(&pf->pdev->dev,
10078                                  "uplink seid %d not found\n", uplink_seid);
10079                         return NULL;
10080                 }
10081         }
10082
10083         /* get veb sw struct */
10084         veb_idx = i40e_veb_mem_alloc(pf);
10085         if (veb_idx < 0)
10086                 goto err_alloc;
10087         veb = pf->veb[veb_idx];
10088         veb->flags = flags;
10089         veb->uplink_seid = uplink_seid;
10090         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
10091         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
10092
10093         /* create the VEB in the switch */
10094         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
10095         if (ret)
10096                 goto err_veb;
10097         if (vsi_idx == pf->lan_vsi)
10098                 pf->lan_veb = veb->idx;
10099
10100         return veb;
10101
10102 err_veb:
10103         i40e_veb_clear(veb);
10104 err_alloc:
10105         return NULL;
10106 }
10107
10108 /**
10109  * i40e_setup_pf_switch_element - set PF vars based on switch type
10110  * @pf: board private structure
10111  * @ele: element we are building info from
10112  * @num_reported: total number of elements
10113  * @printconfig: should we print the contents
10114  *
10115  * helper function to assist in extracting a few useful SEID values.
10116  **/
10117 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
10118                                 struct i40e_aqc_switch_config_element_resp *ele,
10119                                 u16 num_reported, bool printconfig)
10120 {
10121         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
10122         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
10123         u8 element_type = ele->element_type;
10124         u16 seid = le16_to_cpu(ele->seid);
10125
10126         if (printconfig)
10127                 dev_info(&pf->pdev->dev,
10128                          "type=%d seid=%d uplink=%d downlink=%d\n",
10129                          element_type, seid, uplink_seid, downlink_seid);
10130
10131         switch (element_type) {
10132         case I40E_SWITCH_ELEMENT_TYPE_MAC:
10133                 pf->mac_seid = seid;
10134                 break;
10135         case I40E_SWITCH_ELEMENT_TYPE_VEB:
10136                 /* Main VEB? */
10137                 if (uplink_seid != pf->mac_seid)
10138                         break;
10139                 if (pf->lan_veb == I40E_NO_VEB) {
10140                         int v;
10141
10142                         /* find existing or else empty VEB */
10143                         for (v = 0; v < I40E_MAX_VEB; v++) {
10144                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
10145                                         pf->lan_veb = v;
10146                                         break;
10147                                 }
10148                         }
10149                         if (pf->lan_veb == I40E_NO_VEB) {
10150                                 v = i40e_veb_mem_alloc(pf);
10151                                 if (v < 0)
10152                                         break;
10153                                 pf->lan_veb = v;
10154                         }
10155                 }
10156
10157                 pf->veb[pf->lan_veb]->seid = seid;
10158                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
10159                 pf->veb[pf->lan_veb]->pf = pf;
10160                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
10161                 break;
10162         case I40E_SWITCH_ELEMENT_TYPE_VSI:
10163                 if (num_reported != 1)
10164                         break;
10165                 /* This is immediately after a reset so we can assume this is
10166                  * the PF's VSI
10167                  */
10168                 pf->mac_seid = uplink_seid;
10169                 pf->pf_seid = downlink_seid;
10170                 pf->main_vsi_seid = seid;
10171                 if (printconfig)
10172                         dev_info(&pf->pdev->dev,
10173                                  "pf_seid=%d main_vsi_seid=%d\n",
10174                                  pf->pf_seid, pf->main_vsi_seid);
10175                 break;
10176         case I40E_SWITCH_ELEMENT_TYPE_PF:
10177         case I40E_SWITCH_ELEMENT_TYPE_VF:
10178         case I40E_SWITCH_ELEMENT_TYPE_EMP:
10179         case I40E_SWITCH_ELEMENT_TYPE_BMC:
10180         case I40E_SWITCH_ELEMENT_TYPE_PE:
10181         case I40E_SWITCH_ELEMENT_TYPE_PA:
10182                 /* ignore these for now */
10183                 break;
10184         default:
10185                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
10186                          element_type, seid);
10187                 break;
10188         }
10189 }
10190
10191 /**
10192  * i40e_fetch_switch_configuration - Get switch config from firmware
10193  * @pf: board private structure
10194  * @printconfig: should we print the contents
10195  *
10196  * Get the current switch configuration from the device and
10197  * extract a few useful SEID values.
10198  **/
10199 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
10200 {
10201         struct i40e_aqc_get_switch_config_resp *sw_config;
10202         u16 next_seid = 0;
10203         int ret = 0;
10204         u8 *aq_buf;
10205         int i;
10206
10207         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
10208         if (!aq_buf)
10209                 return -ENOMEM;
10210
10211         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
10212         do {
10213                 u16 num_reported, num_total;
10214
10215                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
10216                                                 I40E_AQ_LARGE_BUF,
10217                                                 &next_seid, NULL);
10218                 if (ret) {
10219                         dev_info(&pf->pdev->dev,
10220                                  "get switch config failed err %s aq_err %s\n",
10221                                  i40e_stat_str(&pf->hw, ret),
10222                                  i40e_aq_str(&pf->hw,
10223                                              pf->hw.aq.asq_last_status));
10224                         kfree(aq_buf);
10225                         return -ENOENT;
10226                 }
10227
10228                 num_reported = le16_to_cpu(sw_config->header.num_reported);
10229                 num_total = le16_to_cpu(sw_config->header.num_total);
10230
10231                 if (printconfig)
10232                         dev_info(&pf->pdev->dev,
10233                                  "header: %d reported %d total\n",
10234                                  num_reported, num_total);
10235
10236                 for (i = 0; i < num_reported; i++) {
10237                         struct i40e_aqc_switch_config_element_resp *ele =
10238                                 &sw_config->element[i];
10239
10240                         i40e_setup_pf_switch_element(pf, ele, num_reported,
10241                                                      printconfig);
10242                 }
10243         } while (next_seid != 0);
10244
10245         kfree(aq_buf);
10246         return ret;
10247 }
10248
10249 /**
10250  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
10251  * @pf: board private structure
10252  * @reinit: if the Main VSI needs to re-initialized.
10253  *
10254  * Returns 0 on success, negative value on failure
10255  **/
10256 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
10257 {
10258         int ret;
10259
10260         /* find out what's out there already */
10261         ret = i40e_fetch_switch_configuration(pf, false);
10262         if (ret) {
10263                 dev_info(&pf->pdev->dev,
10264                          "couldn't fetch switch config, err %s aq_err %s\n",
10265                          i40e_stat_str(&pf->hw, ret),
10266                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10267                 return ret;
10268         }
10269         i40e_pf_reset_stats(pf);
10270
10271         /* first time setup */
10272         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
10273                 struct i40e_vsi *vsi = NULL;
10274                 u16 uplink_seid;
10275
10276                 /* Set up the PF VSI associated with the PF's main VSI
10277                  * that is already in the HW switch
10278                  */
10279                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
10280                         uplink_seid = pf->veb[pf->lan_veb]->seid;
10281                 else
10282                         uplink_seid = pf->mac_seid;
10283                 if (pf->lan_vsi == I40E_NO_VSI)
10284                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
10285                 else if (reinit)
10286                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
10287                 if (!vsi) {
10288                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
10289                         i40e_fdir_teardown(pf);
10290                         return -EAGAIN;
10291                 }
10292         } else {
10293                 /* force a reset of TC and queue layout configurations */
10294                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
10295
10296                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
10297                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
10298                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
10299         }
10300         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
10301
10302         i40e_fdir_sb_setup(pf);
10303
10304         /* Setup static PF queue filter control settings */
10305         ret = i40e_setup_pf_filter_control(pf);
10306         if (ret) {
10307                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
10308                          ret);
10309                 /* Failure here should not stop continuing other steps */
10310         }
10311
10312         /* enable RSS in the HW, even for only one queue, as the stack can use
10313          * the hash
10314          */
10315         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
10316                 i40e_pf_config_rss(pf);
10317
10318         /* fill in link information and enable LSE reporting */
10319         i40e_update_link_info(&pf->hw);
10320         i40e_link_event(pf);
10321
10322         /* Initialize user-specific link properties */
10323         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
10324                                   I40E_AQ_AN_COMPLETED) ? true : false);
10325
10326         i40e_ptp_init(pf);
10327
10328         return ret;
10329 }
10330
10331 /**
10332  * i40e_determine_queue_usage - Work out queue distribution
10333  * @pf: board private structure
10334  **/
10335 static void i40e_determine_queue_usage(struct i40e_pf *pf)
10336 {
10337         int queues_left;
10338
10339         pf->num_lan_qps = 0;
10340 #ifdef I40E_FCOE
10341         pf->num_fcoe_qps = 0;
10342 #endif
10343
10344         /* Find the max queues to be put into basic use.  We'll always be
10345          * using TC0, whether or not DCB is running, and TC0 will get the
10346          * big RSS set.
10347          */
10348         queues_left = pf->hw.func_caps.num_tx_qp;
10349
10350         if ((queues_left == 1) ||
10351             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
10352                 /* one qp for PF, no queues for anything else */
10353                 queues_left = 0;
10354                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10355
10356                 /* make sure all the fancies are disabled */
10357                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10358 #ifdef I40E_FCOE
10359                                I40E_FLAG_FCOE_ENABLED   |
10360 #endif
10361                                I40E_FLAG_FD_SB_ENABLED  |
10362                                I40E_FLAG_FD_ATR_ENABLED |
10363                                I40E_FLAG_DCB_CAPABLE    |
10364                                I40E_FLAG_SRIOV_ENABLED  |
10365                                I40E_FLAG_VMDQ_ENABLED);
10366         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
10367                                   I40E_FLAG_FD_SB_ENABLED |
10368                                   I40E_FLAG_FD_ATR_ENABLED |
10369                                   I40E_FLAG_DCB_CAPABLE))) {
10370                 /* one qp for PF */
10371                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10372                 queues_left -= pf->num_lan_qps;
10373
10374                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10375 #ifdef I40E_FCOE
10376                                I40E_FLAG_FCOE_ENABLED   |
10377 #endif
10378                                I40E_FLAG_FD_SB_ENABLED  |
10379                                I40E_FLAG_FD_ATR_ENABLED |
10380                                I40E_FLAG_DCB_ENABLED    |
10381                                I40E_FLAG_VMDQ_ENABLED);
10382         } else {
10383                 /* Not enough queues for all TCs */
10384                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
10385                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
10386                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10387                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
10388                 }
10389                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
10390                                         num_online_cpus());
10391                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
10392                                         pf->hw.func_caps.num_tx_qp);
10393
10394                 queues_left -= pf->num_lan_qps;
10395         }
10396
10397 #ifdef I40E_FCOE
10398         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
10399                 if (I40E_DEFAULT_FCOE <= queues_left) {
10400                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
10401                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
10402                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
10403                 } else {
10404                         pf->num_fcoe_qps = 0;
10405                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
10406                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
10407                 }
10408
10409                 queues_left -= pf->num_fcoe_qps;
10410         }
10411
10412 #endif
10413         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10414                 if (queues_left > 1) {
10415                         queues_left -= 1; /* save 1 queue for FD */
10416                 } else {
10417                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
10418                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
10419                 }
10420         }
10421
10422         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10423             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
10424                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
10425                                         (queues_left / pf->num_vf_qps));
10426                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
10427         }
10428
10429         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
10430             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
10431                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
10432                                           (queues_left / pf->num_vmdq_qps));
10433                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
10434         }
10435
10436         pf->queues_left = queues_left;
10437         dev_dbg(&pf->pdev->dev,
10438                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
10439                 pf->hw.func_caps.num_tx_qp,
10440                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
10441                 pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
10442                 pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
10443                 queues_left);
10444 #ifdef I40E_FCOE
10445         dev_dbg(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
10446 #endif
10447 }
10448
10449 /**
10450  * i40e_setup_pf_filter_control - Setup PF static filter control
10451  * @pf: PF to be setup
10452  *
10453  * i40e_setup_pf_filter_control sets up a PF's initial filter control
10454  * settings. If PE/FCoE are enabled then it will also set the per PF
10455  * based filter sizes required for them. It also enables Flow director,
10456  * ethertype and macvlan type filter settings for the pf.
10457  *
10458  * Returns 0 on success, negative on failure
10459  **/
10460 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
10461 {
10462         struct i40e_filter_control_settings *settings = &pf->filter_settings;
10463
10464         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
10465
10466         /* Flow Director is enabled */
10467         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
10468                 settings->enable_fdir = true;
10469
10470         /* Ethtype and MACVLAN filters enabled for PF */
10471         settings->enable_ethtype = true;
10472         settings->enable_macvlan = true;
10473
10474         if (i40e_set_filter_control(&pf->hw, settings))
10475                 return -ENOENT;
10476
10477         return 0;
10478 }
10479
10480 #define INFO_STRING_LEN 255
10481 #define REMAIN(__x) (INFO_STRING_LEN - (__x))
10482 static void i40e_print_features(struct i40e_pf *pf)
10483 {
10484         struct i40e_hw *hw = &pf->hw;
10485         char *buf;
10486         int i;
10487
10488         buf = kmalloc(INFO_STRING_LEN, GFP_KERNEL);
10489         if (!buf)
10490                 return;
10491
10492         i = snprintf(buf, INFO_STRING_LEN, "Features: PF-id[%d]", hw->pf_id);
10493 #ifdef CONFIG_PCI_IOV
10494         i += snprintf(&buf[i], REMAIN(i), " VFs: %d", pf->num_req_vfs);
10495 #endif
10496         i += snprintf(&buf[i], REMAIN(i), " VSIs: %d QP: %d RX: %s",
10497                       pf->hw.func_caps.num_vsis,
10498                       pf->vsi[pf->lan_vsi]->num_queue_pairs,
10499                       pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
10500
10501         if (pf->flags & I40E_FLAG_RSS_ENABLED)
10502                 i += snprintf(&buf[i], REMAIN(i), " RSS");
10503         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
10504                 i += snprintf(&buf[i], REMAIN(i), " FD_ATR");
10505         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10506                 i += snprintf(&buf[i], REMAIN(i), " FD_SB");
10507                 i += snprintf(&buf[i], REMAIN(i), " NTUPLE");
10508         }
10509         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
10510                 i += snprintf(&buf[i], REMAIN(i), " DCB");
10511 #if IS_ENABLED(CONFIG_VXLAN)
10512         i += snprintf(&buf[i], REMAIN(i), " VxLAN");
10513 #endif
10514 #if IS_ENABLED(CONFIG_GENEVE)
10515         i += snprintf(&buf[i], REMAIN(i), " Geneve");
10516 #endif
10517         if (pf->flags & I40E_FLAG_PTP)
10518                 i += snprintf(&buf[i], REMAIN(i), " PTP");
10519 #ifdef I40E_FCOE
10520         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
10521                 i += snprintf(&buf[i], REMAIN(i), " FCOE");
10522 #endif
10523         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
10524                 i += snprintf(&buf[i], REMAIN(i), " VEB");
10525         else
10526                 i += snprintf(&buf[i], REMAIN(i), " VEPA");
10527
10528         dev_info(&pf->pdev->dev, "%s\n", buf);
10529         kfree(buf);
10530         WARN_ON(i > INFO_STRING_LEN);
10531 }
10532
10533 /**
10534  * i40e_get_platform_mac_addr - get platform-specific MAC address
10535  *
10536  * @pdev: PCI device information struct
10537  * @pf: board private structure
10538  *
10539  * Look up the MAC address in Open Firmware  on systems that support it,
10540  * and use IDPROM on SPARC if no OF address is found. On return, the
10541  * I40E_FLAG_PF_MAC will be wset in pf->flags if a platform-specific value
10542  * has been selected.
10543  **/
10544 static void i40e_get_platform_mac_addr(struct pci_dev *pdev, struct i40e_pf *pf)
10545 {
10546         struct device_node *dp = pci_device_to_OF_node(pdev);
10547         const unsigned char *addr;
10548         u8 *mac_addr = pf->hw.mac.addr;
10549
10550         pf->flags &= ~I40E_FLAG_PF_MAC;
10551         addr = of_get_mac_address(dp);
10552         if (addr) {
10553                 ether_addr_copy(mac_addr, addr);
10554                 pf->flags |= I40E_FLAG_PF_MAC;
10555 #ifdef CONFIG_SPARC
10556         } else {
10557                 ether_addr_copy(mac_addr, idprom->id_ethaddr);
10558                 pf->flags |= I40E_FLAG_PF_MAC;
10559 #endif /* CONFIG_SPARC */
10560         }
10561 }
10562
10563 /**
10564  * i40e_probe - Device initialization routine
10565  * @pdev: PCI device information struct
10566  * @ent: entry in i40e_pci_tbl
10567  *
10568  * i40e_probe initializes a PF identified by a pci_dev structure.
10569  * The OS initialization, configuring of the PF private structure,
10570  * and a hardware reset occur.
10571  *
10572  * Returns 0 on success, negative on failure
10573  **/
10574 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
10575 {
10576         struct i40e_aq_get_phy_abilities_resp abilities;
10577         struct i40e_pf *pf;
10578         struct i40e_hw *hw;
10579         static u16 pfs_found;
10580         u16 wol_nvm_bits;
10581         u16 link_status;
10582         int err;
10583         u32 len;
10584         u32 val;
10585         u32 i;
10586         u8 set_fc_aq_fail;
10587
10588         err = pci_enable_device_mem(pdev);
10589         if (err)
10590                 return err;
10591
10592         /* set up for high or low dma */
10593         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10594         if (err) {
10595                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10596                 if (err) {
10597                         dev_err(&pdev->dev,
10598                                 "DMA configuration failed: 0x%x\n", err);
10599                         goto err_dma;
10600                 }
10601         }
10602
10603         /* set up pci connections */
10604         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
10605                                            IORESOURCE_MEM), i40e_driver_name);
10606         if (err) {
10607                 dev_info(&pdev->dev,
10608                          "pci_request_selected_regions failed %d\n", err);
10609                 goto err_pci_reg;
10610         }
10611
10612         pci_enable_pcie_error_reporting(pdev);
10613         pci_set_master(pdev);
10614
10615         /* Now that we have a PCI connection, we need to do the
10616          * low level device setup.  This is primarily setting up
10617          * the Admin Queue structures and then querying for the
10618          * device's current profile information.
10619          */
10620         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
10621         if (!pf) {
10622                 err = -ENOMEM;
10623                 goto err_pf_alloc;
10624         }
10625         pf->next_vsi = 0;
10626         pf->pdev = pdev;
10627         set_bit(__I40E_DOWN, &pf->state);
10628
10629         hw = &pf->hw;
10630         hw->back = pf;
10631
10632         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
10633                                 I40E_MAX_CSR_SPACE);
10634
10635         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
10636         if (!hw->hw_addr) {
10637                 err = -EIO;
10638                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
10639                          (unsigned int)pci_resource_start(pdev, 0),
10640                          pf->ioremap_len, err);
10641                 goto err_ioremap;
10642         }
10643         hw->vendor_id = pdev->vendor;
10644         hw->device_id = pdev->device;
10645         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10646         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10647         hw->subsystem_device_id = pdev->subsystem_device;
10648         hw->bus.device = PCI_SLOT(pdev->devfn);
10649         hw->bus.func = PCI_FUNC(pdev->devfn);
10650         pf->instance = pfs_found;
10651
10652         if (debug != -1) {
10653                 pf->msg_enable = pf->hw.debug_mask;
10654                 pf->msg_enable = debug;
10655         }
10656
10657         /* do a special CORER for clearing PXE mode once at init */
10658         if (hw->revision_id == 0 &&
10659             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10660                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10661                 i40e_flush(hw);
10662                 msleep(200);
10663                 pf->corer_count++;
10664
10665                 i40e_clear_pxe_mode(hw);
10666         }
10667
10668         /* Reset here to make sure all is clean and to define PF 'n' */
10669         i40e_clear_hw(hw);
10670         err = i40e_pf_reset(hw);
10671         if (err) {
10672                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10673                 goto err_pf_reset;
10674         }
10675         pf->pfr_count++;
10676
10677         hw->aq.num_arq_entries = I40E_AQ_LEN;
10678         hw->aq.num_asq_entries = I40E_AQ_LEN;
10679         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10680         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10681         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10682
10683         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10684                  "%s-%s:misc",
10685                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10686
10687         err = i40e_init_shared_code(hw);
10688         if (err) {
10689                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10690                          err);
10691                 goto err_pf_reset;
10692         }
10693
10694         /* set up a default setting for link flow control */
10695         pf->hw.fc.requested_mode = I40E_FC_NONE;
10696
10697         /* set up the locks for the AQ, do this only once in probe
10698          * and destroy them only once in remove
10699          */
10700         mutex_init(&hw->aq.asq_mutex);
10701         mutex_init(&hw->aq.arq_mutex);
10702
10703         err = i40e_init_adminq(hw);
10704         if (err) {
10705                 if (err == I40E_ERR_FIRMWARE_API_VERSION)
10706                         dev_info(&pdev->dev,
10707                                  "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");
10708                 else
10709                         dev_info(&pdev->dev,
10710                                  "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");
10711
10712                 goto err_pf_reset;
10713         }
10714
10715         /* provide nvm, fw, api versions */
10716         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
10717                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
10718                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
10719                  i40e_nvm_version_str(hw));
10720
10721         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10722             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10723                 dev_info(&pdev->dev,
10724                          "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");
10725         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10726                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10727                 dev_info(&pdev->dev,
10728                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10729
10730         i40e_verify_eeprom(pf);
10731
10732         /* Rev 0 hardware was never productized */
10733         if (hw->revision_id < 1)
10734                 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");
10735
10736         i40e_clear_pxe_mode(hw);
10737         err = i40e_get_capabilities(pf);
10738         if (err)
10739                 goto err_adminq_setup;
10740
10741         err = i40e_sw_init(pf);
10742         if (err) {
10743                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10744                 goto err_sw_init;
10745         }
10746
10747         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10748                                 hw->func_caps.num_rx_qp,
10749                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10750         if (err) {
10751                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10752                 goto err_init_lan_hmc;
10753         }
10754
10755         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10756         if (err) {
10757                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10758                 err = -ENOENT;
10759                 goto err_configure_lan_hmc;
10760         }
10761
10762         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10763          * Ignore error return codes because if it was already disabled via
10764          * hardware settings this will fail
10765          */
10766         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
10767             (pf->hw.aq.fw_maj_ver < 4)) {
10768                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10769                 i40e_aq_stop_lldp(hw, true, NULL);
10770         }
10771
10772         i40e_get_mac_addr(hw, hw->mac.addr);
10773         /* allow a platform config to override the HW addr */
10774         i40e_get_platform_mac_addr(pdev, pf);
10775         if (!is_valid_ether_addr(hw->mac.addr)) {
10776                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10777                 err = -EIO;
10778                 goto err_mac_addr;
10779         }
10780         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10781         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10782         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10783         if (is_valid_ether_addr(hw->mac.port_addr))
10784                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10785 #ifdef I40E_FCOE
10786         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10787         if (err)
10788                 dev_info(&pdev->dev,
10789                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10790         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10791                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10792                          hw->mac.san_addr);
10793                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10794         }
10795         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10796 #endif /* I40E_FCOE */
10797
10798         pci_set_drvdata(pdev, pf);
10799         pci_save_state(pdev);
10800 #ifdef CONFIG_I40E_DCB
10801         err = i40e_init_pf_dcb(pf);
10802         if (err) {
10803                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10804                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10805                 /* Continue without DCB enabled */
10806         }
10807 #endif /* CONFIG_I40E_DCB */
10808
10809         /* set up periodic task facility */
10810         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10811         pf->service_timer_period = HZ;
10812
10813         INIT_WORK(&pf->service_task, i40e_service_task);
10814         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10815         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10816
10817         /* NVM bit on means WoL disabled for the port */
10818         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
10819         if (BIT (hw->port) & wol_nvm_bits || hw->partition_id != 1)
10820                 pf->wol_en = false;
10821         else
10822                 pf->wol_en = true;
10823         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10824
10825         /* set up the main switch operations */
10826         i40e_determine_queue_usage(pf);
10827         err = i40e_init_interrupt_scheme(pf);
10828         if (err)
10829                 goto err_switch_setup;
10830
10831         /* The number of VSIs reported by the FW is the minimum guaranteed
10832          * to us; HW supports far more and we share the remaining pool with
10833          * the other PFs. We allocate space for more than the guarantee with
10834          * the understanding that we might not get them all later.
10835          */
10836         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10837                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10838         else
10839                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10840
10841         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10842         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
10843         pf->vsi = kzalloc(len, GFP_KERNEL);
10844         if (!pf->vsi) {
10845                 err = -ENOMEM;
10846                 goto err_switch_setup;
10847         }
10848
10849 #ifdef CONFIG_PCI_IOV
10850         /* prep for VF support */
10851         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10852             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10853             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10854                 if (pci_num_vf(pdev))
10855                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
10856         }
10857 #endif
10858         err = i40e_setup_pf_switch(pf, false);
10859         if (err) {
10860                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
10861                 goto err_vsis;
10862         }
10863
10864         /* Make sure flow control is set according to current settings */
10865         err = i40e_set_fc(hw, &set_fc_aq_fail, true);
10866         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
10867                 dev_dbg(&pf->pdev->dev,
10868                         "Set fc with err %s aq_err %s on get_phy_cap\n",
10869                         i40e_stat_str(hw, err),
10870                         i40e_aq_str(hw, hw->aq.asq_last_status));
10871         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
10872                 dev_dbg(&pf->pdev->dev,
10873                         "Set fc with err %s aq_err %s on set_phy_config\n",
10874                         i40e_stat_str(hw, err),
10875                         i40e_aq_str(hw, hw->aq.asq_last_status));
10876         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
10877                 dev_dbg(&pf->pdev->dev,
10878                         "Set fc with err %s aq_err %s on get_link_info\n",
10879                         i40e_stat_str(hw, err),
10880                         i40e_aq_str(hw, hw->aq.asq_last_status));
10881
10882         /* if FDIR VSI was set up, start it now */
10883         for (i = 0; i < pf->num_alloc_vsi; i++) {
10884                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
10885                         i40e_vsi_open(pf->vsi[i]);
10886                         break;
10887                 }
10888         }
10889
10890         /* driver is only interested in link up/down and module qualification
10891          * reports from firmware
10892          */
10893         err = i40e_aq_set_phy_int_mask(&pf->hw,
10894                                        I40E_AQ_EVENT_LINK_UPDOWN |
10895                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
10896         if (err)
10897                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
10898                          i40e_stat_str(&pf->hw, err),
10899                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10900
10901         /* Reconfigure hardware for allowing smaller MSS in the case
10902          * of TSO, so that we avoid the MDD being fired and causing
10903          * a reset in the case of small MSS+TSO.
10904          */
10905         val = rd32(hw, I40E_REG_MSS);
10906         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
10907                 val &= ~I40E_REG_MSS_MIN_MASK;
10908                 val |= I40E_64BYTE_MSS;
10909                 wr32(hw, I40E_REG_MSS, val);
10910         }
10911
10912         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
10913             (pf->hw.aq.fw_maj_ver < 4)) {
10914                 msleep(75);
10915                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
10916                 if (err)
10917                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
10918                                  i40e_stat_str(&pf->hw, err),
10919                                  i40e_aq_str(&pf->hw,
10920                                              pf->hw.aq.asq_last_status));
10921         }
10922         /* The main driver is (mostly) up and happy. We need to set this state
10923          * before setting up the misc vector or we get a race and the vector
10924          * ends up disabled forever.
10925          */
10926         clear_bit(__I40E_DOWN, &pf->state);
10927
10928         /* In case of MSIX we are going to setup the misc vector right here
10929          * to handle admin queue events etc. In case of legacy and MSI
10930          * the misc functionality and queue processing is combined in
10931          * the same vector and that gets setup at open.
10932          */
10933         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
10934                 err = i40e_setup_misc_vector(pf);
10935                 if (err) {
10936                         dev_info(&pdev->dev,
10937                                  "setup of misc vector failed: %d\n", err);
10938                         goto err_vsis;
10939                 }
10940         }
10941
10942 #ifdef CONFIG_PCI_IOV
10943         /* prep for VF support */
10944         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10945             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10946             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10947                 u32 val;
10948
10949                 /* disable link interrupts for VFs */
10950                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
10951                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
10952                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
10953                 i40e_flush(hw);
10954
10955                 if (pci_num_vf(pdev)) {
10956                         dev_info(&pdev->dev,
10957                                  "Active VFs found, allocating resources.\n");
10958                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
10959                         if (err)
10960                                 dev_info(&pdev->dev,
10961                                          "Error %d allocating resources for existing VFs\n",
10962                                          err);
10963                 }
10964         }
10965 #endif /* CONFIG_PCI_IOV */
10966
10967         pfs_found++;
10968
10969         i40e_dbg_pf_init(pf);
10970
10971         /* tell the firmware that we're starting */
10972         i40e_send_version(pf);
10973
10974         /* since everything's happy, start the service_task timer */
10975         mod_timer(&pf->service_timer,
10976                   round_jiffies(jiffies + pf->service_timer_period));
10977
10978 #ifdef I40E_FCOE
10979         /* create FCoE interface */
10980         i40e_fcoe_vsi_setup(pf);
10981
10982 #endif
10983 #define PCI_SPEED_SIZE 8
10984 #define PCI_WIDTH_SIZE 8
10985         /* Devices on the IOSF bus do not have this information
10986          * and will report PCI Gen 1 x 1 by default so don't bother
10987          * checking them.
10988          */
10989         if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
10990                 char speed[PCI_SPEED_SIZE] = "Unknown";
10991                 char width[PCI_WIDTH_SIZE] = "Unknown";
10992
10993                 /* Get the negotiated link width and speed from PCI config
10994                  * space
10995                  */
10996                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
10997                                           &link_status);
10998
10999                 i40e_set_pci_config_data(hw, link_status);
11000
11001                 switch (hw->bus.speed) {
11002                 case i40e_bus_speed_8000:
11003                         strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
11004                 case i40e_bus_speed_5000:
11005                         strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
11006                 case i40e_bus_speed_2500:
11007                         strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
11008                 default:
11009                         break;
11010                 }
11011                 switch (hw->bus.width) {
11012                 case i40e_bus_width_pcie_x8:
11013                         strncpy(width, "8", PCI_WIDTH_SIZE); break;
11014                 case i40e_bus_width_pcie_x4:
11015                         strncpy(width, "4", PCI_WIDTH_SIZE); break;
11016                 case i40e_bus_width_pcie_x2:
11017                         strncpy(width, "2", PCI_WIDTH_SIZE); break;
11018                 case i40e_bus_width_pcie_x1:
11019                         strncpy(width, "1", PCI_WIDTH_SIZE); break;
11020                 default:
11021                         break;
11022                 }
11023
11024                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
11025                          speed, width);
11026
11027                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
11028                     hw->bus.speed < i40e_bus_speed_8000) {
11029                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
11030                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
11031                 }
11032         }
11033
11034         /* get the requested speeds from the fw */
11035         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
11036         if (err)
11037                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
11038                         i40e_stat_str(&pf->hw, err),
11039                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11040         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
11041
11042         /* get the supported phy types from the fw */
11043         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
11044         if (err)
11045                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
11046                         i40e_stat_str(&pf->hw, err),
11047                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11048         pf->hw.phy.phy_types = le32_to_cpu(abilities.phy_type);
11049
11050         /* Add a filter to drop all Flow control frames from any VSI from being
11051          * transmitted. By doing so we stop a malicious VF from sending out
11052          * PAUSE or PFC frames and potentially controlling traffic for other
11053          * PF/VF VSIs.
11054          * The FW can still send Flow control frames if enabled.
11055          */
11056         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
11057                                                        pf->main_vsi_seid);
11058
11059         /* print a string summarizing features */
11060         i40e_print_features(pf);
11061
11062         return 0;
11063
11064         /* Unwind what we've done if something failed in the setup */
11065 err_vsis:
11066         set_bit(__I40E_DOWN, &pf->state);
11067         i40e_clear_interrupt_scheme(pf);
11068         kfree(pf->vsi);
11069 err_switch_setup:
11070         i40e_reset_interrupt_capability(pf);
11071         del_timer_sync(&pf->service_timer);
11072 err_mac_addr:
11073 err_configure_lan_hmc:
11074         (void)i40e_shutdown_lan_hmc(hw);
11075 err_init_lan_hmc:
11076         kfree(pf->qp_pile);
11077 err_sw_init:
11078 err_adminq_setup:
11079         (void)i40e_shutdown_adminq(hw);
11080 err_pf_reset:
11081         iounmap(hw->hw_addr);
11082 err_ioremap:
11083         kfree(pf);
11084 err_pf_alloc:
11085         pci_disable_pcie_error_reporting(pdev);
11086         pci_release_selected_regions(pdev,
11087                                      pci_select_bars(pdev, IORESOURCE_MEM));
11088 err_pci_reg:
11089 err_dma:
11090         pci_disable_device(pdev);
11091         return err;
11092 }
11093
11094 /**
11095  * i40e_remove - Device removal routine
11096  * @pdev: PCI device information struct
11097  *
11098  * i40e_remove is called by the PCI subsystem to alert the driver
11099  * that is should release a PCI device.  This could be caused by a
11100  * Hot-Plug event, or because the driver is going to be removed from
11101  * memory.
11102  **/
11103 static void i40e_remove(struct pci_dev *pdev)
11104 {
11105         struct i40e_pf *pf = pci_get_drvdata(pdev);
11106         struct i40e_hw *hw = &pf->hw;
11107         i40e_status ret_code;
11108         int i;
11109
11110         i40e_dbg_pf_exit(pf);
11111
11112         i40e_ptp_stop(pf);
11113
11114         /* Disable RSS in hw */
11115         wr32(hw, I40E_PFQF_HENA(0), 0);
11116         wr32(hw, I40E_PFQF_HENA(1), 0);
11117
11118         /* no more scheduling of any task */
11119         set_bit(__I40E_DOWN, &pf->state);
11120         del_timer_sync(&pf->service_timer);
11121         cancel_work_sync(&pf->service_task);
11122
11123         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
11124                 i40e_free_vfs(pf);
11125                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
11126         }
11127
11128         i40e_fdir_teardown(pf);
11129
11130         /* If there is a switch structure or any orphans, remove them.
11131          * This will leave only the PF's VSI remaining.
11132          */
11133         for (i = 0; i < I40E_MAX_VEB; i++) {
11134                 if (!pf->veb[i])
11135                         continue;
11136
11137                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
11138                     pf->veb[i]->uplink_seid == 0)
11139                         i40e_switch_branch_release(pf->veb[i]);
11140         }
11141
11142         /* Now we can shutdown the PF's VSI, just before we kill
11143          * adminq and hmc.
11144          */
11145         if (pf->vsi[pf->lan_vsi])
11146                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
11147
11148         /* shutdown and destroy the HMC */
11149         if (pf->hw.hmc.hmc_obj) {
11150                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
11151                 if (ret_code)
11152                         dev_warn(&pdev->dev,
11153                                  "Failed to destroy the HMC resources: %d\n",
11154                                  ret_code);
11155         }
11156
11157         /* shutdown the adminq */
11158         ret_code = i40e_shutdown_adminq(&pf->hw);
11159         if (ret_code)
11160                 dev_warn(&pdev->dev,
11161                          "Failed to destroy the Admin Queue resources: %d\n",
11162                          ret_code);
11163
11164         /* destroy the locks only once, here */
11165         mutex_destroy(&hw->aq.arq_mutex);
11166         mutex_destroy(&hw->aq.asq_mutex);
11167
11168         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
11169         i40e_clear_interrupt_scheme(pf);
11170         for (i = 0; i < pf->num_alloc_vsi; i++) {
11171                 if (pf->vsi[i]) {
11172                         i40e_vsi_clear_rings(pf->vsi[i]);
11173                         i40e_vsi_clear(pf->vsi[i]);
11174                         pf->vsi[i] = NULL;
11175                 }
11176         }
11177
11178         for (i = 0; i < I40E_MAX_VEB; i++) {
11179                 kfree(pf->veb[i]);
11180                 pf->veb[i] = NULL;
11181         }
11182
11183         kfree(pf->qp_pile);
11184         kfree(pf->vsi);
11185
11186         iounmap(pf->hw.hw_addr);
11187         kfree(pf);
11188         pci_release_selected_regions(pdev,
11189                                      pci_select_bars(pdev, IORESOURCE_MEM));
11190
11191         pci_disable_pcie_error_reporting(pdev);
11192         pci_disable_device(pdev);
11193 }
11194
11195 /**
11196  * i40e_pci_error_detected - warning that something funky happened in PCI land
11197  * @pdev: PCI device information struct
11198  *
11199  * Called to warn that something happened and the error handling steps
11200  * are in progress.  Allows the driver to quiesce things, be ready for
11201  * remediation.
11202  **/
11203 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
11204                                                 enum pci_channel_state error)
11205 {
11206         struct i40e_pf *pf = pci_get_drvdata(pdev);
11207
11208         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
11209
11210         /* shutdown all operations */
11211         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
11212                 rtnl_lock();
11213                 i40e_prep_for_reset(pf);
11214                 rtnl_unlock();
11215         }
11216
11217         /* Request a slot reset */
11218         return PCI_ERS_RESULT_NEED_RESET;
11219 }
11220
11221 /**
11222  * i40e_pci_error_slot_reset - a PCI slot reset just happened
11223  * @pdev: PCI device information struct
11224  *
11225  * Called to find if the driver can work with the device now that
11226  * the pci slot has been reset.  If a basic connection seems good
11227  * (registers are readable and have sane content) then return a
11228  * happy little PCI_ERS_RESULT_xxx.
11229  **/
11230 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
11231 {
11232         struct i40e_pf *pf = pci_get_drvdata(pdev);
11233         pci_ers_result_t result;
11234         int err;
11235         u32 reg;
11236
11237         dev_dbg(&pdev->dev, "%s\n", __func__);
11238         if (pci_enable_device_mem(pdev)) {
11239                 dev_info(&pdev->dev,
11240                          "Cannot re-enable PCI device after reset.\n");
11241                 result = PCI_ERS_RESULT_DISCONNECT;
11242         } else {
11243                 pci_set_master(pdev);
11244                 pci_restore_state(pdev);
11245                 pci_save_state(pdev);
11246                 pci_wake_from_d3(pdev, false);
11247
11248                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
11249                 if (reg == 0)
11250                         result = PCI_ERS_RESULT_RECOVERED;
11251                 else
11252                         result = PCI_ERS_RESULT_DISCONNECT;
11253         }
11254
11255         err = pci_cleanup_aer_uncorrect_error_status(pdev);
11256         if (err) {
11257                 dev_info(&pdev->dev,
11258                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
11259                          err);
11260                 /* non-fatal, continue */
11261         }
11262
11263         return result;
11264 }
11265
11266 /**
11267  * i40e_pci_error_resume - restart operations after PCI error recovery
11268  * @pdev: PCI device information struct
11269  *
11270  * Called to allow the driver to bring things back up after PCI error
11271  * and/or reset recovery has finished.
11272  **/
11273 static void i40e_pci_error_resume(struct pci_dev *pdev)
11274 {
11275         struct i40e_pf *pf = pci_get_drvdata(pdev);
11276
11277         dev_dbg(&pdev->dev, "%s\n", __func__);
11278         if (test_bit(__I40E_SUSPENDED, &pf->state))
11279                 return;
11280
11281         rtnl_lock();
11282         i40e_handle_reset_warning(pf);
11283         rtnl_unlock();
11284 }
11285
11286 /**
11287  * i40e_shutdown - PCI callback for shutting down
11288  * @pdev: PCI device information struct
11289  **/
11290 static void i40e_shutdown(struct pci_dev *pdev)
11291 {
11292         struct i40e_pf *pf = pci_get_drvdata(pdev);
11293         struct i40e_hw *hw = &pf->hw;
11294
11295         set_bit(__I40E_SUSPENDED, &pf->state);
11296         set_bit(__I40E_DOWN, &pf->state);
11297         rtnl_lock();
11298         i40e_prep_for_reset(pf);
11299         rtnl_unlock();
11300
11301         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11302         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11303
11304         del_timer_sync(&pf->service_timer);
11305         cancel_work_sync(&pf->service_task);
11306         i40e_fdir_teardown(pf);
11307
11308         rtnl_lock();
11309         i40e_prep_for_reset(pf);
11310         rtnl_unlock();
11311
11312         wr32(hw, I40E_PFPM_APM,
11313              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11314         wr32(hw, I40E_PFPM_WUFC,
11315              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11316
11317         i40e_clear_interrupt_scheme(pf);
11318
11319         if (system_state == SYSTEM_POWER_OFF) {
11320                 pci_wake_from_d3(pdev, pf->wol_en);
11321                 pci_set_power_state(pdev, PCI_D3hot);
11322         }
11323 }
11324
11325 #ifdef CONFIG_PM
11326 /**
11327  * i40e_suspend - PCI callback for moving to D3
11328  * @pdev: PCI device information struct
11329  **/
11330 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
11331 {
11332         struct i40e_pf *pf = pci_get_drvdata(pdev);
11333         struct i40e_hw *hw = &pf->hw;
11334
11335         set_bit(__I40E_SUSPENDED, &pf->state);
11336         set_bit(__I40E_DOWN, &pf->state);
11337
11338         rtnl_lock();
11339         i40e_prep_for_reset(pf);
11340         rtnl_unlock();
11341
11342         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11343         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11344
11345         pci_wake_from_d3(pdev, pf->wol_en);
11346         pci_set_power_state(pdev, PCI_D3hot);
11347
11348         return 0;
11349 }
11350
11351 /**
11352  * i40e_resume - PCI callback for waking up from D3
11353  * @pdev: PCI device information struct
11354  **/
11355 static int i40e_resume(struct pci_dev *pdev)
11356 {
11357         struct i40e_pf *pf = pci_get_drvdata(pdev);
11358         u32 err;
11359
11360         pci_set_power_state(pdev, PCI_D0);
11361         pci_restore_state(pdev);
11362         /* pci_restore_state() clears dev->state_saves, so
11363          * call pci_save_state() again to restore it.
11364          */
11365         pci_save_state(pdev);
11366
11367         err = pci_enable_device_mem(pdev);
11368         if (err) {
11369                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
11370                 return err;
11371         }
11372         pci_set_master(pdev);
11373
11374         /* no wakeup events while running */
11375         pci_wake_from_d3(pdev, false);
11376
11377         /* handling the reset will rebuild the device state */
11378         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
11379                 clear_bit(__I40E_DOWN, &pf->state);
11380                 rtnl_lock();
11381                 i40e_reset_and_rebuild(pf, false);
11382                 rtnl_unlock();
11383         }
11384
11385         return 0;
11386 }
11387
11388 #endif
11389 static const struct pci_error_handlers i40e_err_handler = {
11390         .error_detected = i40e_pci_error_detected,
11391         .slot_reset = i40e_pci_error_slot_reset,
11392         .resume = i40e_pci_error_resume,
11393 };
11394
11395 static struct pci_driver i40e_driver = {
11396         .name     = i40e_driver_name,
11397         .id_table = i40e_pci_tbl,
11398         .probe    = i40e_probe,
11399         .remove   = i40e_remove,
11400 #ifdef CONFIG_PM
11401         .suspend  = i40e_suspend,
11402         .resume   = i40e_resume,
11403 #endif
11404         .shutdown = i40e_shutdown,
11405         .err_handler = &i40e_err_handler,
11406         .sriov_configure = i40e_pci_sriov_configure,
11407 };
11408
11409 /**
11410  * i40e_init_module - Driver registration routine
11411  *
11412  * i40e_init_module is the first routine called when the driver is
11413  * loaded. All it does is register with the PCI subsystem.
11414  **/
11415 static int __init i40e_init_module(void)
11416 {
11417         pr_info("%s: %s - version %s\n", i40e_driver_name,
11418                 i40e_driver_string, i40e_driver_version_str);
11419         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
11420
11421         i40e_dbg_init();
11422         return pci_register_driver(&i40e_driver);
11423 }
11424 module_init(i40e_init_module);
11425
11426 /**
11427  * i40e_exit_module - Driver exit cleanup routine
11428  *
11429  * i40e_exit_module is called just before the driver is removed
11430  * from memory.
11431  **/
11432 static void __exit i40e_exit_module(void)
11433 {
11434         pci_unregister_driver(&i40e_driver);
11435         i40e_dbg_exit();
11436 }
11437 module_exit(i40e_exit_module);