drivers/net/ethernet/cavium/liquidio/lio_vf_main.c

   1 /**********************************************************************
   2  * Author: Cavium, Inc.
   3  *
   4  * Contact: support@cavium.com
   5  *          Please include "LiquidIO" in the subject.
   6  *
   7  * Copyright (c) 2003-2016 Cavium, Inc.
   8  *
   9  * This file is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License, Version 2, as
  11  * published by the Free Software Foundation.
  12  *
  13  * This file is distributed in the hope that it will be useful, but
  14  * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
  15  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
  16  * NONINFRINGEMENT.  See the GNU General Public License for more details.
  17  ***********************************************************************/
  18 #include <linux/module.h>
  19 #include <linux/interrupt.h>
  20 #include <linux/pci.h>
  21 #include <net/vxlan.h>
  22 #include "liquidio_common.h"
  23 #include "octeon_droq.h"
  24 #include "octeon_iq.h"
  25 #include "response_manager.h"
  26 #include "octeon_device.h"
  27 #include "octeon_nic.h"
  28 #include "octeon_main.h"
  29 #include "octeon_network.h"
  30 #include "cn23xx_vf_device.h"
  31
  32 MODULE_AUTHOR("Cavium Networks, <support@cavium.com>");
  33 MODULE_DESCRIPTION("Cavium LiquidIO Intelligent Server Adapter Virtual Function Driver");
  34 MODULE_LICENSE("GPL");
  35 MODULE_VERSION(LIQUIDIO_VERSION);
  36
  37 static int debug = -1;
  38 module_param(debug, int, 0644);
  39 MODULE_PARM_DESC(debug, "NETIF_MSG debug bits");
  40
  41 #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
  42
  43 struct liquidio_rx_ctl_context {
  44         int octeon_id;
  45
  46         wait_queue_head_t wc;
  47
  48         int cond;
  49 };
  50
  51 struct oct_timestamp_resp {
  52         u64 rh;
  53         u64 timestamp;
  54         u64 status;
  55 };
  56
  57 union tx_info {
  58         u64 u64;
  59         struct {
  60 #ifdef __BIG_ENDIAN_BITFIELD
  61                 u16 gso_size;
  62                 u16 gso_segs;
  63                 u32 reserved;
  64 #else
  65                 u32 reserved;
  66                 u16 gso_segs;
  67                 u16 gso_size;
  68 #endif
  69         } s;
  70 };
  71
  72 #define OCTNIC_GSO_MAX_HEADER_SIZE 128
  73 #define OCTNIC_GSO_MAX_SIZE \
  74                 (CN23XX_DEFAULT_INPUT_JABBER - OCTNIC_GSO_MAX_HEADER_SIZE)
  75
  76 static int
  77 liquidio_vf_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
  78 static void liquidio_vf_remove(struct pci_dev *pdev);
  79 static int octeon_device_init(struct octeon_device *oct);
  80 static int liquidio_stop(struct net_device *netdev);
  81
  82 static int lio_wait_for_oq_pkts(struct octeon_device *oct)
  83 {
  84         struct octeon_device_priv *oct_priv =
  85             (struct octeon_device_priv *)oct->priv;
  86         int retry = MAX_IO_PENDING_PKT_COUNT;
  87         int pkt_cnt = 0, pending_pkts;
  88         int i;
  89
  90         do {
  91                 pending_pkts = 0;
  92
  93                 for (i = 0; i < MAX_OCTEON_OUTPUT_QUEUES(oct); i++) {
  94                         if (!(oct->io_qmask.oq & BIT_ULL(i)))
  95                                 continue;
  96                         pkt_cnt += octeon_droq_check_hw_for_pkts(oct->droq[i]);
  97                 }
  98                 if (pkt_cnt > 0) {
  99                         pending_pkts += pkt_cnt;
 100                         tasklet_schedule(&oct_priv->droq_tasklet);
 101                 }
 102                 pkt_cnt = 0;
 103                 schedule_timeout_uninterruptible(1);
 104
 105         } while (retry-- && pending_pkts);
 106
 107         return pkt_cnt;
 108 }
 109
 110 /**
 111  * \brief Cause device to go quiet so it can be safely removed/reset/etc
 112  * @param oct Pointer to Octeon device
 113  */
 114 static void pcierror_quiesce_device(struct octeon_device *oct)
 115 {
 116         int i;
 117
 118         /* Disable the input and output queues now. No more packets will
 119          * arrive from Octeon, but we should wait for all packet processing
 120          * to finish.
 121          */
 122
 123         /* To allow for in-flight requests */
 124         schedule_timeout_uninterruptible(100);
 125
 126         if (wait_for_pending_requests(oct))
 127                 dev_err(&oct->pci_dev->dev, "There were pending requests\n");
 128
 129         /* Force all requests waiting to be fetched by OCTEON to complete. */
 130         for (i = 0; i < MAX_OCTEON_INSTR_QUEUES(oct); i++) {
 131                 struct octeon_instr_queue *iq;
 132
 133                 if (!(oct->io_qmask.iq & BIT_ULL(i)))
 134                         continue;
 135                 iq = oct->instr_queue[i];
 136
 137                 if (atomic_read(&iq->instr_pending)) {
 138                         spin_lock_bh(&iq->lock);
 139                         iq->fill_cnt = 0;
 140                         iq->octeon_read_index = iq->host_write_index;
 141                         iq->stats.instr_processed +=
 142                             atomic_read(&iq->instr_pending);
 143                         lio_process_iq_request_list(oct, iq, 0);
 144                         spin_unlock_bh(&iq->lock);
 145                 }
 146         }
 147
 148         /* Force all pending ordered list requests to time out. */
 149         lio_process_ordered_list(oct, 1);
 150
 151         /* We do not need to wait for output queue packets to be processed. */
 152 }
 153
 154 /**
 155  * \brief Cleanup PCI AER uncorrectable error status
 156  * @param dev Pointer to PCI device
 157  */
 158 static void cleanup_aer_uncorrect_error_status(struct pci_dev *dev)
 159 {
 160         u32 status, mask;
 161         int pos = 0x100;
 162
 163         pr_info("%s :\n", __func__);
 164
 165         pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, &status);
 166         pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_SEVER, &mask);
 167         if (dev->error_state == pci_channel_io_normal)
 168                 status &= ~mask; /* Clear corresponding nonfatal bits */
 169         else
 170                 status &= mask; /* Clear corresponding fatal bits */
 171         pci_write_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, status);
 172 }
 173
 174 /**
 175  * \brief Stop all PCI IO to a given device
 176  * @param dev Pointer to Octeon device
 177  */
 178 static void stop_pci_io(struct octeon_device *oct)
 179 {
 180         struct msix_entry *msix_entries;
 181         int i;
 182
 183         /* No more instructions will be forwarded. */
 184         atomic_set(&oct->status, OCT_DEV_IN_RESET);
 185
 186         for (i = 0; i < oct->ifcount; i++)
 187                 netif_device_detach(oct->props[i].netdev);
 188
 189         /* Disable interrupts  */
 190         oct->fn_list.disable_interrupt(oct, OCTEON_ALL_INTR);
 191
 192         pcierror_quiesce_device(oct);
 193         if (oct->msix_on) {
 194                 msix_entries = (struct msix_entry *)oct->msix_entries;
 195                 for (i = 0; i < oct->num_msix_irqs; i++) {
 196                         /* clear the affinity_cpumask */
 197                         irq_set_affinity_hint(msix_entries[i].vector,
 198                                               NULL);
 199                         free_irq(msix_entries[i].vector,
 200                                  &oct->ioq_vector[i]);
 201                 }
 202                 pci_disable_msix(oct->pci_dev);
 203                 kfree(oct->msix_entries);
 204                 oct->msix_entries = NULL;
 205                 octeon_free_ioq_vector(oct);
 206         }
 207         dev_dbg(&oct->pci_dev->dev, "Device state is now %s\n",
 208                 lio_get_state_string(&oct->status));
 209
 210         /* making it a common function for all OCTEON models */
 211         cleanup_aer_uncorrect_error_status(oct->pci_dev);
 212
 213         pci_disable_device(oct->pci_dev);
 214 }
 215
 216 /**
 217  * \brief called when PCI error is detected
 218  * @param pdev Pointer to PCI device
 219  * @param state The current pci connection state
 220  *
 221  * This function is called after a PCI bus error affecting
 222  * this device has been detected.
 223  */
 224 static pci_ers_result_t liquidio_pcie_error_detected(struct pci_dev *pdev,
 225                                                      pci_channel_state_t state)
 226 {
 227         struct octeon_device *oct = pci_get_drvdata(pdev);
 228
 229         /* Non-correctable Non-fatal errors */
 230         if (state == pci_channel_io_normal) {
 231                 dev_err(&oct->pci_dev->dev, "Non-correctable non-fatal error reported:\n");
 232                 cleanup_aer_uncorrect_error_status(oct->pci_dev);
 233                 return PCI_ERS_RESULT_CAN_RECOVER;
 234         }
 235
 236         /* Non-correctable Fatal errors */
 237         dev_err(&oct->pci_dev->dev, "Non-correctable FATAL reported by PCI AER driver\n");
 238         stop_pci_io(oct);
 239
 240         return PCI_ERS_RESULT_DISCONNECT;
 241 }
 242
 243 /* For PCI-E Advanced Error Recovery (AER) Interface */
 244 static const struct pci_error_handlers liquidio_vf_err_handler = {
 245         .error_detected = liquidio_pcie_error_detected,
 246 };
 247
 248 static const struct pci_device_id liquidio_vf_pci_tbl[] = {
 249         {
 250                 PCI_VENDOR_ID_CAVIUM, OCTEON_CN23XX_VF_VID,
 251                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0
 252         },
 253         {
 254                 0, 0, 0, 0, 0, 0, 0
 255         }
 256 };
 257 MODULE_DEVICE_TABLE(pci, liquidio_vf_pci_tbl);
 258
 259 static struct pci_driver liquidio_vf_pci_driver = {
 260         .name           = "LiquidIO_VF",
 261         .id_table       = liquidio_vf_pci_tbl,
 262         .probe          = liquidio_vf_probe,
 263         .remove         = liquidio_vf_remove,
 264         .err_handler    = &liquidio_vf_err_handler,    /* For AER */
 265 };
 266
 267 /**
 268  * \brief Print link information
 269  * @param netdev network device
 270  */
 271 static void print_link_info(struct net_device *netdev)
 272 {
 273         struct lio *lio = GET_LIO(netdev);
 274
 275         if (!ifstate_check(lio, LIO_IFSTATE_RESETTING) &&
 276             ifstate_check(lio, LIO_IFSTATE_REGISTERED)) {
 277                 struct oct_link_info *linfo = &lio->linfo;
 278
 279                 if (linfo->link.s.link_up) {
 280                         netif_info(lio, link, lio->netdev, "%d Mbps %s Duplex UP\n",
 281                                    linfo->link.s.speed,
 282                                    (linfo->link.s.duplex) ? "Full" : "Half");
 283                 } else {
 284                         netif_info(lio, link, lio->netdev, "Link Down\n");
 285                 }
 286         }
 287 }
 288
 289 /**
 290  * \brief Routine to notify MTU change
 291  * @param work work_struct data structure
 292  */
 293 static void octnet_link_status_change(struct work_struct *work)
 294 {
 295         struct cavium_wk *wk = (struct cavium_wk *)work;
 296         struct lio *lio = (struct lio *)wk->ctxptr;
 297
 298         /* lio->linfo.link.s.mtu always contains max MTU of the lio interface.
 299          * this API is invoked only when new max-MTU of the interface is
 300          * less than current MTU.
 301          */
 302         rtnl_lock();
 303         dev_set_mtu(lio->netdev, lio->linfo.link.s.mtu);
 304         rtnl_unlock();
 305 }
 306
 307 /**
 308  * \brief Sets up the mtu status change work
 309  * @param netdev network device
 310  */
 311 static int setup_link_status_change_wq(struct net_device *netdev)
 312 {
 313         struct lio *lio = GET_LIO(netdev);
 314         struct octeon_device *oct = lio->oct_dev;
 315
 316         lio->link_status_wq.wq = alloc_workqueue("link-status",
 317                                                  WQ_MEM_RECLAIM, 0);
 318         if (!lio->link_status_wq.wq) {
 319                 dev_err(&oct->pci_dev->dev, "unable to create cavium link status wq\n");
 320                 return -1;
 321         }
 322         INIT_DELAYED_WORK(&lio->link_status_wq.wk.work,
 323                           octnet_link_status_change);
 324         lio->link_status_wq.wk.ctxptr = lio;
 325
 326         return 0;
 327 }
 328
 329 static void cleanup_link_status_change_wq(struct net_device *netdev)
 330 {
 331         struct lio *lio = GET_LIO(netdev);
 332
 333         if (lio->link_status_wq.wq) {
 334                 cancel_delayed_work_sync(&lio->link_status_wq.wk.work);
 335                 destroy_workqueue(lio->link_status_wq.wq);
 336         }
 337 }
 338
 339 /**
 340  * \brief Update link status
 341  * @param netdev network device
 342  * @param ls link status structure
 343  *
 344  * Called on receipt of a link status response from the core application to
 345  * update each interface's link status.
 346  */
 347 static void update_link_status(struct net_device *netdev,
 348                                union oct_link_status *ls)
 349 {
 350         struct lio *lio = GET_LIO(netdev);
 351         int current_max_mtu = lio->linfo.link.s.mtu;
 352         struct octeon_device *oct = lio->oct_dev;
 353
 354         if ((lio->intf_open) && (lio->linfo.link.u64 != ls->u64)) {
 355                 lio->linfo.link.u64 = ls->u64;
 356
 357                 print_link_info(netdev);
 358                 lio->link_changes++;
 359
 360                 if (lio->linfo.link.s.link_up) {
 361                         netif_carrier_on(netdev);
 362                         wake_txqs(netdev);
 363                 } else {
 364                         netif_carrier_off(netdev);
 365                         stop_txqs(netdev);
 366                 }
 367
 368                 if (lio->linfo.link.s.mtu != current_max_mtu) {
 369                         dev_info(&oct->pci_dev->dev,
 370                                  "Max MTU Changed from %d to %d\n",
 371                                  current_max_mtu, lio->linfo.link.s.mtu);
 372                         netdev->max_mtu = lio->linfo.link.s.mtu;
 373                 }
 374
 375                 if (lio->linfo.link.s.mtu < netdev->mtu) {
 376                         dev_warn(&oct->pci_dev->dev,
 377                                  "Current MTU is higher than new max MTU; Reducing the current mtu from %d to %d\n",
 378                                  netdev->mtu, lio->linfo.link.s.mtu);
 379                         queue_delayed_work(lio->link_status_wq.wq,
 380                                            &lio->link_status_wq.wk.work, 0);
 381                 }
 382         }
 383 }
 384
 385 /**
 386  * \brief PCI probe handler
 387  * @param pdev PCI device structure
 388  * @param ent unused
 389  */
 390 static int
 391 liquidio_vf_probe(struct pci_dev *pdev,
 392                   const struct pci_device_id *ent __attribute__((unused)))
 393 {
 394         struct octeon_device *oct_dev = NULL;
 395
 396         oct_dev = octeon_allocate_device(pdev->device,
 397                                          sizeof(struct octeon_device_priv));
 398
 399         if (!oct_dev) {
 400                 dev_err(&pdev->dev, "Unable to allocate device\n");
 401                 return -ENOMEM;
 402         }
 403         oct_dev->msix_on = LIO_FLAG_MSIX_ENABLED;
 404
 405         dev_info(&pdev->dev, "Initializing device %x:%x.\n",
 406                  (u32)pdev->vendor, (u32)pdev->device);
 407
 408         /* Assign octeon_device for this device to the private data area. */
 409         pci_set_drvdata(pdev, oct_dev);
 410
 411         /* set linux specific device pointer */
 412         oct_dev->pci_dev = pdev;
 413
 414         oct_dev->subsystem_id = pdev->subsystem_vendor |
 415                 (pdev->subsystem_device << 16);
 416
 417         if (octeon_device_init(oct_dev)) {
 418                 liquidio_vf_remove(pdev);
 419                 return -ENOMEM;
 420         }
 421
 422         dev_dbg(&oct_dev->pci_dev->dev, "Device is ready\n");
 423
 424         return 0;
 425 }
 426
 427 /**
 428  * \brief PCI FLR for each Octeon device.
 429  * @param oct octeon device
 430  */
 431 static void octeon_pci_flr(struct octeon_device *oct)
 432 {
 433         pci_save_state(oct->pci_dev);
 434
 435         pci_cfg_access_lock(oct->pci_dev);
 436
 437         /* Quiesce the device completely */
 438         pci_write_config_word(oct->pci_dev, PCI_COMMAND,
 439                               PCI_COMMAND_INTX_DISABLE);
 440
 441         pcie_flr(oct->pci_dev);
 442
 443         pci_cfg_access_unlock(oct->pci_dev);
 444
 445         pci_restore_state(oct->pci_dev);
 446 }
 447
 448 /**
 449  *\brief Destroy resources associated with octeon device
 450  * @param pdev PCI device structure
 451  * @param ent unused
 452  */
 453 static void octeon_destroy_resources(struct octeon_device *oct)
 454 {
 455         struct msix_entry *msix_entries;
 456         int i;
 457
 458         switch (atomic_read(&oct->status)) {
 459         case OCT_DEV_RUNNING:
 460         case OCT_DEV_CORE_OK:
 461                 /* No more instructions will be forwarded. */
 462                 atomic_set(&oct->status, OCT_DEV_IN_RESET);
 463
 464                 oct->app_mode = CVM_DRV_INVALID_APP;
 465                 dev_dbg(&oct->pci_dev->dev, "Device state is now %s\n",
 466                         lio_get_state_string(&oct->status));
 467
 468                 schedule_timeout_uninterruptible(HZ / 10);
 469
 470                 /* fallthrough */
 471         case OCT_DEV_HOST_OK:
 472                 /* fallthrough */
 473         case OCT_DEV_IO_QUEUES_DONE:
 474                 if (wait_for_pending_requests(oct))
 475                         dev_err(&oct->pci_dev->dev, "There were pending requests\n");
 476
 477                 if (lio_wait_for_instr_fetch(oct))
 478                         dev_err(&oct->pci_dev->dev, "IQ had pending instructions\n");
 479
 480                 /* Disable the input and output queues now. No more packets will
 481                  * arrive from Octeon, but we should wait for all packet
 482                  * processing to finish.
 483                  */
 484                 oct->fn_list.disable_io_queues(oct);
 485
 486                 if (lio_wait_for_oq_pkts(oct))
 487                         dev_err(&oct->pci_dev->dev, "OQ had pending packets\n");
 488                 /* fall through */
 489         case OCT_DEV_INTR_SET_DONE:
 490                 /* Disable interrupts  */
 491                 oct->fn_list.disable_interrupt(oct, OCTEON_ALL_INTR);
 492
 493                 if (oct->msix_on) {
 494                         msix_entries = (struct msix_entry *)oct->msix_entries;
 495                         for (i = 0; i < oct->num_msix_irqs; i++) {
 496                                 if (oct->ioq_vector[i].vector) {
 497                                         irq_set_affinity_hint(
 498                                                         msix_entries[i].vector,
 499                                                         NULL);
 500                                         free_irq(msix_entries[i].vector,
 501                                                  &oct->ioq_vector[i]);
 502                                         oct->ioq_vector[i].vector = 0;
 503                                 }
 504                         }
 505                         pci_disable_msix(oct->pci_dev);
 506                         kfree(oct->msix_entries);
 507                         oct->msix_entries = NULL;
 508                         kfree(oct->irq_name_storage);
 509                         oct->irq_name_storage = NULL;
 510                 }
 511                 /* Soft reset the octeon device before exiting */
 512                 if (oct->pci_dev->reset_fn)
 513                         octeon_pci_flr(oct);
 514                 else
 515                         cn23xx_vf_ask_pf_to_do_flr(oct);
 516
 517                 /* fallthrough */
 518         case OCT_DEV_MSIX_ALLOC_VECTOR_DONE:
 519                 octeon_free_ioq_vector(oct);
 520
 521                 /* fallthrough */
 522         case OCT_DEV_MBOX_SETUP_DONE:
 523                 oct->fn_list.free_mbox(oct);
 524
 525                 /* fallthrough */
 526         case OCT_DEV_IN_RESET:
 527         case OCT_DEV_DROQ_INIT_DONE:
 528                 mdelay(100);
 529                 for (i = 0; i < MAX_OCTEON_OUTPUT_QUEUES(oct); i++) {
 530                         if (!(oct->io_qmask.oq & BIT_ULL(i)))
 531                                 continue;
 532                         octeon_delete_droq(oct, i);
 533                 }
 534
 535                 /* fallthrough */
 536         case OCT_DEV_RESP_LIST_INIT_DONE:
 537                 octeon_delete_response_list(oct);
 538
 539                 /* fallthrough */
 540         case OCT_DEV_INSTR_QUEUE_INIT_DONE:
 541                 for (i = 0; i < MAX_OCTEON_INSTR_QUEUES(oct); i++) {
 542                         if (!(oct->io_qmask.iq & BIT_ULL(i)))
 543                                 continue;
 544                         octeon_delete_instr_queue(oct, i);
 545                 }
 546
 547                 /* fallthrough */
 548         case OCT_DEV_SC_BUFF_POOL_INIT_DONE:
 549                 octeon_free_sc_buffer_pool(oct);
 550
 551                 /* fallthrough */
 552         case OCT_DEV_DISPATCH_INIT_DONE:
 553                 octeon_delete_dispatch_list(oct);
 554                 cancel_delayed_work_sync(&oct->nic_poll_work.work);
 555
 556                 /* fallthrough */
 557         case OCT_DEV_PCI_MAP_DONE:
 558                 octeon_unmap_pci_barx(oct, 0);
 559                 octeon_unmap_pci_barx(oct, 1);
 560
 561                 /* fallthrough */
 562         case OCT_DEV_PCI_ENABLE_DONE:
 563                 pci_clear_master(oct->pci_dev);
 564                 /* Disable the device, releasing the PCI INT */
 565                 pci_disable_device(oct->pci_dev);
 566
 567                 /* fallthrough */
 568         case OCT_DEV_BEGIN_STATE:
 569                 /* Nothing to be done here either */
 570                 break;
 571         }
 572 }
 573
 574 /**
 575  * \brief Callback for rx ctrl
 576  * @param status status of request
 577  * @param buf pointer to resp structure
 578  */
 579 static void rx_ctl_callback(struct octeon_device *oct,
 580                             u32 status, void *buf)
 581 {
 582         struct octeon_soft_command *sc = (struct octeon_soft_command *)buf;
 583         struct liquidio_rx_ctl_context *ctx;
 584
 585         ctx  = (struct liquidio_rx_ctl_context *)sc->ctxptr;
 586
 587         oct = lio_get_device(ctx->octeon_id);
 588         if (status)
 589                 dev_err(&oct->pci_dev->dev, "rx ctl instruction failed. Status: %llx\n",
 590                         CVM_CAST64(status));
 591         WRITE_ONCE(ctx->cond, 1);
 592
 593         /* This barrier is required to be sure that the response has been
 594          * written fully before waking up the handler
 595          */
 596         wmb();
 597
 598         wake_up_interruptible(&ctx->wc);
 599 }
 600
 601 /**
 602  * \brief Send Rx control command
 603  * @param lio per-network private data
 604  * @param start_stop whether to start or stop
 605  */
 606 static void send_rx_ctrl_cmd(struct lio *lio, int start_stop)
 607 {
 608         struct octeon_device *oct = (struct octeon_device *)lio->oct_dev;
 609         int ctx_size = sizeof(struct liquidio_rx_ctl_context);
 610         struct liquidio_rx_ctl_context *ctx;
 611         struct octeon_soft_command *sc;
 612         union octnet_cmd *ncmd;
 613         int retval;
 614
 615         if (oct->props[lio->ifidx].rx_on == start_stop)
 616                 return;
 617
 618         sc = (struct octeon_soft_command *)
 619                 octeon_alloc_soft_command(oct, OCTNET_CMD_SIZE,
 620                                           16, ctx_size);
 621
 622         ncmd = (union octnet_cmd *)sc->virtdptr;
 623         ctx  = (struct liquidio_rx_ctl_context *)sc->ctxptr;
 624
 625         WRITE_ONCE(ctx->cond, 0);
 626         ctx->octeon_id = lio_get_device_id(oct);
 627         init_waitqueue_head(&ctx->wc);
 628
 629         ncmd->u64 = 0;
 630         ncmd->s.cmd = OCTNET_CMD_RX_CTL;
 631         ncmd->s.param1 = start_stop;
 632
 633         octeon_swap_8B_data((u64 *)ncmd, (OCTNET_CMD_SIZE >> 3));
 634
 635         sc->iq_no = lio->linfo.txpciq[0].s.q_no;
 636
 637         octeon_prepare_soft_command(oct, sc, OPCODE_NIC,
 638                                     OPCODE_NIC_CMD, 0, 0, 0);
 639
 640         sc->callback = rx_ctl_callback;
 641         sc->callback_arg = sc;
 642         sc->wait_time = 5000;
 643
 644         retval = octeon_send_soft_command(oct, sc);
 645         if (retval == IQ_SEND_FAILED) {
 646                 netif_info(lio, rx_err, lio->netdev, "Failed to send RX Control message\n");
 647         } else {
 648                 /* Sleep on a wait queue till the cond flag indicates that the
 649                  * response arrived or timed-out.
 650                  */
 651                 if (sleep_cond(&ctx->wc, &ctx->cond) == -EINTR)
 652                         return;
 653                 oct->props[lio->ifidx].rx_on = start_stop;
 654         }
 655
 656         octeon_free_soft_command(oct, sc);
 657 }
 658
 659 /**
 660  * \brief Destroy NIC device interface
 661  * @param oct octeon device
 662  * @param ifidx which interface to destroy
 663  *
 664  * Cleanup associated with each interface for an Octeon device  when NIC
 665  * module is being unloaded or if initialization fails during load.
 666  */
 667 static void liquidio_destroy_nic_device(struct octeon_device *oct, int ifidx)
 668 {
 669         struct net_device *netdev = oct->props[ifidx].netdev;
 670         struct napi_struct *napi, *n;
 671         struct lio *lio;
 672
 673         if (!netdev) {
 674                 dev_err(&oct->pci_dev->dev, "%s No netdevice ptr for index %d\n",
 675                         __func__, ifidx);
 676                 return;
 677         }
 678
 679         lio = GET_LIO(netdev);
 680
 681         dev_dbg(&oct->pci_dev->dev, "NIC device cleanup\n");
 682
 683         if (atomic_read(&lio->ifstate) & LIO_IFSTATE_RUNNING)
 684                 liquidio_stop(netdev);
 685
 686         if (oct->props[lio->ifidx].napi_enabled == 1) {
 687                 list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list)
 688                         napi_disable(napi);
 689
 690                 oct->props[lio->ifidx].napi_enabled = 0;
 691
 692                 oct->droq[0]->ops.poll_mode = 0;
 693         }
 694
 695         /* Delete NAPI */
 696         list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list)
 697                 netif_napi_del(napi);
 698
 699         if (atomic_read(&lio->ifstate) & LIO_IFSTATE_REGISTERED)
 700                 unregister_netdev(netdev);
 701
 702         cleanup_rx_oom_poll_fn(netdev);
 703
 704         cleanup_link_status_change_wq(netdev);
 705
 706         lio_delete_glists(lio);
 707
 708         free_netdev(netdev);
 709
 710         oct->props[ifidx].gmxport = -1;
 711
 712         oct->props[ifidx].netdev = NULL;
 713 }
 714
 715 /**
 716  * \brief Stop complete NIC functionality
 717  * @param oct octeon device
 718  */
 719 static int liquidio_stop_nic_module(struct octeon_device *oct)
 720 {
 721         struct lio *lio;
 722         int i, j;
 723
 724         dev_dbg(&oct->pci_dev->dev, "Stopping network interfaces\n");
 725         if (!oct->ifcount) {
 726                 dev_err(&oct->pci_dev->dev, "Init for Octeon was not completed\n");
 727                 return 1;
 728         }
 729
 730         spin_lock_bh(&oct->cmd_resp_wqlock);
 731         oct->cmd_resp_state = OCT_DRV_OFFLINE;
 732         spin_unlock_bh(&oct->cmd_resp_wqlock);
 733
 734         for (i = 0; i < oct->ifcount; i++) {
 735                 lio = GET_LIO(oct->props[i].netdev);
 736                 for (j = 0; j < oct->num_oqs; j++)
 737                         octeon_unregister_droq_ops(oct,
 738                                                    lio->linfo.rxpciq[j].s.q_no);
 739         }
 740
 741         for (i = 0; i < oct->ifcount; i++)
 742                 liquidio_destroy_nic_device(oct, i);
 743
 744         dev_dbg(&oct->pci_dev->dev, "Network interfaces stopped\n");
 745         return 0;
 746 }
 747
 748 /**
 749  * \brief Cleans up resources at unload time
 750  * @param pdev PCI device structure
 751  */
 752 static void liquidio_vf_remove(struct pci_dev *pdev)
 753 {
 754         struct octeon_device *oct_dev = pci_get_drvdata(pdev);
 755
 756         dev_dbg(&oct_dev->pci_dev->dev, "Stopping device\n");
 757
 758         if (oct_dev->app_mode == CVM_DRV_NIC_APP)
 759                 liquidio_stop_nic_module(oct_dev);
 760
 761         /* Reset the octeon device and cleanup all memory allocated for
 762          * the octeon device by driver.
 763          */
 764         octeon_destroy_resources(oct_dev);
 765
 766         dev_info(&oct_dev->pci_dev->dev, "Device removed\n");
 767
 768         /* This octeon device has been removed. Update the global
 769          * data structure to reflect this. Free the device structure.
 770          */
 771         octeon_free_device_mem(oct_dev);
 772 }
 773
 774 /**
 775  * \brief PCI initialization for each Octeon device.
 776  * @param oct octeon device
 777  */
 778 static int octeon_pci_os_setup(struct octeon_device *oct)
 779 {
 780 #ifdef CONFIG_PCI_IOV
 781         /* setup PCI stuff first */
 782         if (!oct->pci_dev->physfn)
 783                 octeon_pci_flr(oct);
 784 #endif
 785
 786         if (pci_enable_device(oct->pci_dev)) {
 787                 dev_err(&oct->pci_dev->dev, "pci_enable_device failed\n");
 788                 return 1;
 789         }
 790
 791         if (dma_set_mask_and_coherent(&oct->pci_dev->dev, DMA_BIT_MASK(64))) {
 792                 dev_err(&oct->pci_dev->dev, "Unexpected DMA device capability\n");
 793                 pci_disable_device(oct->pci_dev);
 794                 return 1;
 795         }
 796
 797         /* Enable PCI DMA Master. */
 798         pci_set_master(oct->pci_dev);
 799
 800         return 0;
 801 }
 802
 803 /**
 804  * \brief Unmap and free network buffer
 805  * @param buf buffer
 806  */
 807 static void free_netbuf(void *buf)
 808 {
 809         struct octnet_buf_free_info *finfo;
 810         struct sk_buff *skb;
 811         struct lio *lio;
 812
 813         finfo = (struct octnet_buf_free_info *)buf;
 814         skb = finfo->skb;
 815         lio = finfo->lio;
 816
 817         dma_unmap_single(&lio->oct_dev->pci_dev->dev, finfo->dptr, skb->len,
 818                          DMA_TO_DEVICE);
 819
 820         tx_buffer_free(skb);
 821 }
 822
 823 /**
 824  * \brief Unmap and free gather buffer
 825  * @param buf buffer
 826  */
 827 static void free_netsgbuf(void *buf)
 828 {
 829         struct octnet_buf_free_info *finfo;
 830         struct octnic_gather *g;
 831         struct sk_buff *skb;
 832         int i, frags, iq;
 833         struct lio *lio;
 834
 835         finfo = (struct octnet_buf_free_info *)buf;
 836         skb = finfo->skb;
 837         lio = finfo->lio;
 838         g = finfo->g;
 839         frags = skb_shinfo(skb)->nr_frags;
 840
 841         dma_unmap_single(&lio->oct_dev->pci_dev->dev,
 842                          g->sg[0].ptr[0], (skb->len - skb->data_len),
 843                          DMA_TO_DEVICE);
 844
 845         i = 1;
 846         while (frags--) {
 847                 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i - 1];
 848
 849                 pci_unmap_page((lio->oct_dev)->pci_dev,
 850                                g->sg[(i >> 2)].ptr[(i & 3)],
 851                                frag->size, DMA_TO_DEVICE);
 852                 i++;
 853         }
 854
 855         iq = skb_iq(lio->oct_dev, skb);
 856
 857         spin_lock(&lio->glist_lock[iq]);
 858         list_add_tail(&g->list, &lio->glist[iq]);
 859         spin_unlock(&lio->glist_lock[iq]);
 860
 861         tx_buffer_free(skb);
 862 }
 863
 864 /**
 865  * \brief Unmap and free gather buffer with response
 866  * @param buf buffer
 867  */
 868 static void free_netsgbuf_with_resp(void *buf)
 869 {
 870         struct octnet_buf_free_info *finfo;
 871         struct octeon_soft_command *sc;
 872         struct octnic_gather *g;
 873         struct sk_buff *skb;
 874         int i, frags, iq;
 875         struct lio *lio;
 876
 877         sc = (struct octeon_soft_command *)buf;
 878         skb = (struct sk_buff *)sc->callback_arg;
 879         finfo = (struct octnet_buf_free_info *)&skb->cb;
 880
 881         lio = finfo->lio;
 882         g = finfo->g;
 883         frags = skb_shinfo(skb)->nr_frags;
 884
 885         dma_unmap_single(&lio->oct_dev->pci_dev->dev,
 886                          g->sg[0].ptr[0], (skb->len - skb->data_len),
 887                          DMA_TO_DEVICE);
 888
 889         i = 1;
 890         while (frags--) {
 891                 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i - 1];
 892
 893                 pci_unmap_page((lio->oct_dev)->pci_dev,
 894                                g->sg[(i >> 2)].ptr[(i & 3)],
 895                                frag->size, DMA_TO_DEVICE);
 896                 i++;
 897         }
 898
 899         iq = skb_iq(lio->oct_dev, skb);
 900
 901         spin_lock(&lio->glist_lock[iq]);
 902         list_add_tail(&g->list, &lio->glist[iq]);
 903         spin_unlock(&lio->glist_lock[iq]);
 904
 905         /* Don't free the skb yet */
 906 }
 907
 908 /**
 909  * \brief Net device open for LiquidIO
 910  * @param netdev network device
 911  */
 912 static int liquidio_open(struct net_device *netdev)
 913 {
 914         struct lio *lio = GET_LIO(netdev);
 915         struct octeon_device *oct = lio->oct_dev;
 916         struct napi_struct *napi, *n;
 917
 918         if (!oct->props[lio->ifidx].napi_enabled) {
 919                 list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list)
 920                         napi_enable(napi);
 921
 922                 oct->props[lio->ifidx].napi_enabled = 1;
 923
 924                 oct->droq[0]->ops.poll_mode = 1;
 925         }
 926
 927         ifstate_set(lio, LIO_IFSTATE_RUNNING);
 928
 929         /* Ready for link status updates */
 930         lio->intf_open = 1;
 931
 932         netif_info(lio, ifup, lio->netdev, "Interface Open, ready for traffic\n");
 933         start_txqs(netdev);
 934
 935         /* tell Octeon to start forwarding packets to host */
 936         send_rx_ctrl_cmd(lio, 1);
 937
 938         dev_info(&oct->pci_dev->dev, "%s interface is opened\n", netdev->name);
 939
 940         return 0;
 941 }
 942
 943 /**
 944  * \brief Net device stop for LiquidIO
 945  * @param netdev network device
 946  */
 947 static int liquidio_stop(struct net_device *netdev)
 948 {
 949         struct lio *lio = GET_LIO(netdev);
 950         struct octeon_device *oct = lio->oct_dev;
 951         struct napi_struct *napi, *n;
 952
 953         /* tell Octeon to stop forwarding packets to host */
 954         send_rx_ctrl_cmd(lio, 0);
 955
 956         netif_info(lio, ifdown, lio->netdev, "Stopping interface!\n");
 957         /* Inform that netif carrier is down */
 958         lio->intf_open = 0;
 959         lio->linfo.link.s.link_up = 0;
 960
 961         netif_carrier_off(netdev);
 962         lio->link_changes++;
 963
 964         ifstate_reset(lio, LIO_IFSTATE_RUNNING);
 965
 966         stop_txqs(netdev);
 967
 968         /* Wait for any pending Rx descriptors */
 969         if (lio_wait_for_clean_oq(oct))
 970                 netif_info(lio, rx_err, lio->netdev,
 971                            "Proceeding with stop interface after partial RX desc processing\n");
 972
 973         if (oct->props[lio->ifidx].napi_enabled == 1) {
 974                 list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list)
 975                         napi_disable(napi);
 976
 977                 oct->props[lio->ifidx].napi_enabled = 0;
 978
 979                 oct->droq[0]->ops.poll_mode = 0;
 980         }
 981
 982         dev_info(&oct->pci_dev->dev, "%s interface is stopped\n", netdev->name);
 983
 984         return 0;
 985 }
 986
 987 /**
 988  * \brief Converts a mask based on net device flags
 989  * @param netdev network device
 990  *
 991  * This routine generates a octnet_ifflags mask from the net device flags
 992  * received from the OS.
 993  */
 994 static enum octnet_ifflags get_new_flags(struct net_device *netdev)
 995 {
 996         enum octnet_ifflags f = OCTNET_IFFLAG_UNICAST;
 997
 998         if (netdev->flags & IFF_PROMISC)
 999                 f |= OCTNET_IFFLAG_PROMISC;
1000
1001         if (netdev->flags & IFF_ALLMULTI)
1002                 f |= OCTNET_IFFLAG_ALLMULTI;
1003
1004         if (netdev->flags & IFF_MULTICAST) {
1005                 f |= OCTNET_IFFLAG_MULTICAST;
1006
1007                 /* Accept all multicast addresses if there are more than we
1008                  * can handle
1009                  */
1010                 if (netdev_mc_count(netdev) > MAX_OCTEON_MULTICAST_ADDR)
1011                         f |= OCTNET_IFFLAG_ALLMULTI;
1012         }
1013
1014         if (netdev->flags & IFF_BROADCAST)
1015                 f |= OCTNET_IFFLAG_BROADCAST;
1016
1017         return f;
1018 }
1019
1020 static void liquidio_set_uc_list(struct net_device *netdev)
1021 {
1022         struct lio *lio = GET_LIO(netdev);
1023         struct octeon_device *oct = lio->oct_dev;
1024         struct octnic_ctrl_pkt nctrl;
1025         struct netdev_hw_addr *ha;
1026         u64 *mac;
1027
1028         if (lio->netdev_uc_count == netdev_uc_count(netdev))
1029                 return;
1030
1031         if (netdev_uc_count(netdev) > MAX_NCTRL_UDD) {
1032                 dev_err(&oct->pci_dev->dev, "too many MAC addresses in netdev uc list\n");
1033                 return;
1034         }
1035
1036         lio->netdev_uc_count = netdev_uc_count(netdev);
1037
1038         memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
1039         nctrl.ncmd.s.cmd = OCTNET_CMD_SET_UC_LIST;
1040         nctrl.ncmd.s.more = lio->netdev_uc_count;
1041         nctrl.ncmd.s.param1 = oct->vf_num;
1042         nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
1043         nctrl.netpndev = (u64)netdev;
1044         nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
1045
1046         /* copy all the addresses into the udd */
1047         mac = &nctrl.udd[0];
1048         netdev_for_each_uc_addr(ha, netdev) {
1049                 ether_addr_copy(((u8 *)mac) + 2, ha->addr);
1050                 mac++;
1051         }
1052
1053         octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
1054 }
1055
1056 /**
1057  * \brief Net device set_multicast_list
1058  * @param netdev network device
1059  */
1060 static void liquidio_set_mcast_list(struct net_device *netdev)
1061 {
1062         int mc_count = min(netdev_mc_count(netdev), MAX_OCTEON_MULTICAST_ADDR);
1063         struct lio *lio = GET_LIO(netdev);
1064         struct octeon_device *oct = lio->oct_dev;
1065         struct octnic_ctrl_pkt nctrl;
1066         struct netdev_hw_addr *ha;
1067         u64 *mc;
1068         int ret;
1069
1070         memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
1071
1072         /* Create a ctrl pkt command to be sent to core app. */
1073         nctrl.ncmd.u64 = 0;
1074         nctrl.ncmd.s.cmd = OCTNET_CMD_SET_MULTI_LIST;
1075         nctrl.ncmd.s.param1 = get_new_flags(netdev);
1076         nctrl.ncmd.s.param2 = mc_count;
1077         nctrl.ncmd.s.more = mc_count;
1078         nctrl.netpndev = (u64)netdev;
1079         nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
1080
1081         /* copy all the addresses into the udd */
1082         mc = &nctrl.udd[0];
1083         netdev_for_each_mc_addr(ha, netdev) {
1084                 *mc = 0;
1085                 ether_addr_copy(((u8 *)mc) + 2, ha->addr);
1086                 /* no need to swap bytes */
1087                 if (++mc > &nctrl.udd[mc_count])
1088                         break;
1089         }
1090
1091         nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
1092
1093         /* Apparently, any activity in this call from the kernel has to
1094          * be atomic. So we won't wait for response.
1095          */
1096         nctrl.wait_time = 0;
1097
1098         ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
1099         if (ret < 0) {
1100                 dev_err(&oct->pci_dev->dev, "DEVFLAGS change failed in core (ret: 0x%x)\n",
1101                         ret);
1102         }
1103
1104         liquidio_set_uc_list(netdev);
1105 }
1106
1107 /**
1108  * \brief Net device set_mac_address
1109  * @param netdev network device
1110  */
1111 static int liquidio_set_mac(struct net_device *netdev, void *p)
1112 {
1113         struct sockaddr *addr = (struct sockaddr *)p;
1114         struct lio *lio = GET_LIO(netdev);
1115         struct octeon_device *oct = lio->oct_dev;
1116         struct octnic_ctrl_pkt nctrl;
1117         int ret = 0;
1118
1119         if (!is_valid_ether_addr(addr->sa_data))
1120                 return -EADDRNOTAVAIL;
1121
1122         if (ether_addr_equal(addr->sa_data, netdev->dev_addr))
1123                 return 0;
1124
1125         if (lio->linfo.macaddr_is_admin_asgnd)
1126                 return -EPERM;
1127
1128         memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
1129
1130         nctrl.ncmd.u64 = 0;
1131         nctrl.ncmd.s.cmd = OCTNET_CMD_CHANGE_MACADDR;
1132         nctrl.ncmd.s.param1 = 0;
1133         nctrl.ncmd.s.more = 1;
1134         nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
1135         nctrl.netpndev = (u64)netdev;
1136         nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
1137         nctrl.wait_time = 100;
1138
1139         nctrl.udd[0] = 0;
1140         /* The MAC Address is presented in network byte order. */
1141         ether_addr_copy((u8 *)&nctrl.udd[0] + 2, addr->sa_data);
1142
1143         ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
1144         if (ret < 0) {
1145                 dev_err(&oct->pci_dev->dev, "MAC Address change failed\n");
1146                 return -ENOMEM;
1147         }
1148         memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
1149         ether_addr_copy(((u8 *)&lio->linfo.hw_addr) + 2, addr->sa_data);
1150
1151         return 0;
1152 }
1153
1154 static void
1155 liquidio_get_stats64(struct net_device *netdev,
1156                      struct rtnl_link_stats64 *lstats)
1157 {
1158         struct lio *lio = GET_LIO(netdev);
1159         struct octeon_device *oct;
1160         u64 pkts = 0, drop = 0, bytes = 0;
1161         struct oct_droq_stats *oq_stats;
1162         struct oct_iq_stats *iq_stats;
1163         int i, iq_no, oq_no;
1164
1165         oct = lio->oct_dev;
1166
1167         if (ifstate_check(lio, LIO_IFSTATE_RESETTING))
1168                 return;
1169
1170         for (i = 0; i < oct->num_iqs; i++) {
1171                 iq_no = lio->linfo.txpciq[i].s.q_no;
1172                 iq_stats = &oct->instr_queue[iq_no]->stats;
1173                 pkts += iq_stats->tx_done;
1174                 drop += iq_stats->tx_dropped;
1175                 bytes += iq_stats->tx_tot_bytes;
1176         }
1177
1178         lstats->tx_packets = pkts;
1179         lstats->tx_bytes = bytes;
1180         lstats->tx_dropped = drop;
1181
1182         pkts = 0;
1183         drop = 0;
1184         bytes = 0;
1185
1186         for (i = 0; i < oct->num_oqs; i++) {
1187                 oq_no = lio->linfo.rxpciq[i].s.q_no;
1188                 oq_stats = &oct->droq[oq_no]->stats;
1189                 pkts += oq_stats->rx_pkts_received;
1190                 drop += (oq_stats->rx_dropped +
1191                          oq_stats->dropped_nodispatch +
1192                          oq_stats->dropped_toomany +
1193                          oq_stats->dropped_nomem);
1194                 bytes += oq_stats->rx_bytes_received;
1195         }
1196
1197         lstats->rx_bytes = bytes;
1198         lstats->rx_packets = pkts;
1199         lstats->rx_dropped = drop;
1200
1201         octnet_get_link_stats(netdev);
1202         lstats->multicast = oct->link_stats.fromwire.fw_total_mcast;
1203
1204         /* detailed rx_errors: */
1205         lstats->rx_length_errors = oct->link_stats.fromwire.l2_err;
1206         /* recved pkt with crc error */
1207         lstats->rx_crc_errors = oct->link_stats.fromwire.fcs_err;
1208         /* recv'd frame alignment error */
1209         lstats->rx_frame_errors = oct->link_stats.fromwire.frame_err;
1210
1211         lstats->rx_errors = lstats->rx_length_errors + lstats->rx_crc_errors +
1212                             lstats->rx_frame_errors;
1213
1214         /* detailed tx_errors */
1215         lstats->tx_aborted_errors = oct->link_stats.fromhost.fw_err_pko;
1216         lstats->tx_carrier_errors = oct->link_stats.fromhost.fw_err_link;
1217
1218         lstats->tx_errors = lstats->tx_aborted_errors +
1219                 lstats->tx_carrier_errors;
1220 }
1221
1222 /**
1223  * \brief Handler for SIOCSHWTSTAMP ioctl
1224  * @param netdev network device
1225  * @param ifr interface request
1226  * @param cmd command
1227  */
1228 static int hwtstamp_ioctl(struct net_device *netdev, struct ifreq *ifr)
1229 {
1230         struct lio *lio = GET_LIO(netdev);
1231         struct hwtstamp_config conf;
1232
1233         if (copy_from_user(&conf, ifr->ifr_data, sizeof(conf)))
1234                 return -EFAULT;
1235
1236         if (conf.flags)
1237                 return -EINVAL;
1238
1239         switch (conf.tx_type) {
1240         case HWTSTAMP_TX_ON:
1241         case HWTSTAMP_TX_OFF:
1242                 break;
1243         default:
1244                 return -ERANGE;
1245         }
1246
1247         switch (conf.rx_filter) {
1248         case HWTSTAMP_FILTER_NONE:
1249                 break;
1250         case HWTSTAMP_FILTER_ALL:
1251         case HWTSTAMP_FILTER_SOME:
1252         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
1253         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
1254         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
1255         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
1256         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
1257         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
1258         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
1259         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
1260         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
1261         case HWTSTAMP_FILTER_PTP_V2_EVENT:
1262         case HWTSTAMP_FILTER_PTP_V2_SYNC:
1263         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
1264         case HWTSTAMP_FILTER_NTP_ALL:
1265                 conf.rx_filter = HWTSTAMP_FILTER_ALL;
1266                 break;
1267         default:
1268                 return -ERANGE;
1269         }
1270
1271         if (conf.rx_filter == HWTSTAMP_FILTER_ALL)
1272                 ifstate_set(lio, LIO_IFSTATE_RX_TIMESTAMP_ENABLED);
1273
1274         else
1275                 ifstate_reset(lio, LIO_IFSTATE_RX_TIMESTAMP_ENABLED);
1276
1277         return copy_to_user(ifr->ifr_data, &conf, sizeof(conf)) ? -EFAULT : 0;
1278 }
1279
1280 /**
1281  * \brief ioctl handler
1282  * @param netdev network device
1283  * @param ifr interface request
1284  * @param cmd command
1285  */
1286 static int liquidio_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1287 {
1288         switch (cmd) {
1289         case SIOCSHWTSTAMP:
1290                 return hwtstamp_ioctl(netdev, ifr);
1291         default:
1292                 return -EOPNOTSUPP;
1293         }
1294 }
1295
1296 static void handle_timestamp(struct octeon_device *oct, u32 status, void *buf)
1297 {
1298         struct sk_buff *skb = (struct sk_buff *)buf;
1299         struct octnet_buf_free_info *finfo;
1300         struct oct_timestamp_resp *resp;
1301         struct octeon_soft_command *sc;
1302         struct lio *lio;
1303
1304         finfo = (struct octnet_buf_free_info *)skb->cb;
1305         lio = finfo->lio;
1306         sc = finfo->sc;
1307         oct = lio->oct_dev;
1308         resp = (struct oct_timestamp_resp *)sc->virtrptr;
1309
1310         if (status != OCTEON_REQUEST_DONE) {
1311                 dev_err(&oct->pci_dev->dev, "Tx timestamp instruction failed. Status: %llx\n",
1312                         CVM_CAST64(status));
1313                 resp->timestamp = 0;
1314         }
1315
1316         octeon_swap_8B_data(&resp->timestamp, 1);
1317
1318         if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS)) {
1319                 struct skb_shared_hwtstamps ts;
1320                 u64 ns = resp->timestamp;
1321
1322                 netif_info(lio, tx_done, lio->netdev,
1323                            "Got resulting SKBTX_HW_TSTAMP skb=%p ns=%016llu\n",
1324                            skb, (unsigned long long)ns);
1325                 ts.hwtstamp = ns_to_ktime(ns + lio->ptp_adjust);
1326                 skb_tstamp_tx(skb, &ts);
1327         }
1328
1329         octeon_free_soft_command(oct, sc);
1330         tx_buffer_free(skb);
1331 }
1332
1333 /* \brief Send a data packet that will be timestamped
1334  * @param oct octeon device
1335  * @param ndata pointer to network data
1336  * @param finfo pointer to private network data
1337  */
1338 static int send_nic_timestamp_pkt(struct octeon_device *oct,
1339                                   struct octnic_data_pkt *ndata,
1340                                   struct octnet_buf_free_info *finfo,
1341                                   int xmit_more)
1342 {
1343         struct octeon_soft_command *sc;
1344         int ring_doorbell;
1345         struct lio *lio;
1346         int retval;
1347         u32 len;
1348
1349         lio = finfo->lio;
1350
1351         sc = octeon_alloc_soft_command_resp(oct, &ndata->cmd,
1352                                             sizeof(struct oct_timestamp_resp));
1353         finfo->sc = sc;
1354
1355         if (!sc) {
1356                 dev_err(&oct->pci_dev->dev, "No memory for timestamped data packet\n");
1357                 return IQ_SEND_FAILED;
1358         }
1359
1360         if (ndata->reqtype == REQTYPE_NORESP_NET)
1361                 ndata->reqtype = REQTYPE_RESP_NET;
1362         else if (ndata->reqtype == REQTYPE_NORESP_NET_SG)
1363                 ndata->reqtype = REQTYPE_RESP_NET_SG;
1364
1365         sc->callback = handle_timestamp;
1366         sc->callback_arg = finfo->skb;
1367         sc->iq_no = ndata->q_no;
1368
1369         len = (u32)((struct octeon_instr_ih3 *)(&sc->cmd.cmd3.ih3))->dlengsz;
1370
1371         ring_doorbell = !xmit_more;
1372
1373         retval = octeon_send_command(oct, sc->iq_no, ring_doorbell, &sc->cmd,
1374                                      sc, len, ndata->reqtype);
1375
1376         if (retval == IQ_SEND_FAILED) {
1377                 dev_err(&oct->pci_dev->dev, "timestamp data packet failed status: %x\n",
1378                         retval);
1379                 octeon_free_soft_command(oct, sc);
1380         } else {
1381                 netif_info(lio, tx_queued, lio->netdev, "Queued timestamp packet\n");
1382         }
1383
1384         return retval;
1385 }
1386
1387 /** \brief Transmit networks packets to the Octeon interface
1388  * @param skbuff   skbuff struct to be passed to network layer.
1389  * @param netdev   pointer to network device
1390  * @returns whether the packet was transmitted to the device okay or not
1391  *             (NETDEV_TX_OK or NETDEV_TX_BUSY)
1392  */
1393 static netdev_tx_t liquidio_xmit(struct sk_buff *skb, struct net_device *netdev)
1394 {
1395         struct octnet_buf_free_info *finfo;
1396         union octnic_cmd_setup cmdsetup;
1397         struct octnic_data_pkt ndata;
1398         struct octeon_instr_irh *irh;
1399         struct oct_iq_stats *stats;
1400         struct octeon_device *oct;
1401         int q_idx = 0, iq_no = 0;
1402         union tx_info *tx_info;
1403         int xmit_more = 0;
1404         struct lio *lio;
1405         int status = 0;
1406         u64 dptr = 0;
1407         u32 tag = 0;
1408         int j;
1409
1410         lio = GET_LIO(netdev);
1411         oct = lio->oct_dev;
1412
1413         q_idx = skb_iq(lio->oct_dev, skb);
1414         tag = q_idx;
1415         iq_no = lio->linfo.txpciq[q_idx].s.q_no;
1416
1417         stats = &oct->instr_queue[iq_no]->stats;
1418
1419         /* Check for all conditions in which the current packet cannot be
1420          * transmitted.
1421          */
1422         if (!(atomic_read(&lio->ifstate) & LIO_IFSTATE_RUNNING) ||
1423             (!lio->linfo.link.s.link_up) || (skb->len <= 0)) {
1424                 netif_info(lio, tx_err, lio->netdev, "Transmit failed link_status : %d\n",
1425                            lio->linfo.link.s.link_up);
1426                 goto lio_xmit_failed;
1427         }
1428
1429         /* Use space in skb->cb to store info used to unmap and
1430          * free the buffers.
1431          */
1432         finfo = (struct octnet_buf_free_info *)skb->cb;
1433         finfo->lio = lio;
1434         finfo->skb = skb;
1435         finfo->sc = NULL;
1436
1437         /* Prepare the attributes for the data to be passed to OSI. */
1438         memset(&ndata, 0, sizeof(struct octnic_data_pkt));
1439
1440         ndata.buf = finfo;
1441
1442         ndata.q_no = iq_no;
1443
1444         if (octnet_iq_is_full(oct, ndata.q_no)) {
1445                 /* defer sending if queue is full */
1446                 netif_info(lio, tx_err, lio->netdev, "Transmit failed iq:%d full\n",
1447                            ndata.q_no);
1448                 stats->tx_iq_busy++;
1449                 return NETDEV_TX_BUSY;
1450         }
1451
1452         ndata.datasize = skb->len;
1453
1454         cmdsetup.u64 = 0;
1455         cmdsetup.s.iq_no = iq_no;
1456
1457         if (skb->ip_summed == CHECKSUM_PARTIAL) {
1458                 if (skb->encapsulation) {
1459                         cmdsetup.s.tnl_csum = 1;
1460                         stats->tx_vxlan++;
1461                 } else {
1462                         cmdsetup.s.transport_csum = 1;
1463                 }
1464         }
1465         if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) {
1466                 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
1467                 cmdsetup.s.timestamp = 1;
1468         }
1469
1470         if (!skb_shinfo(skb)->nr_frags) {
1471                 cmdsetup.s.u.datasize = skb->len;
1472                 octnet_prepare_pci_cmd(oct, &ndata.cmd, &cmdsetup, tag);
1473                 /* Offload checksum calculation for TCP/UDP packets */
1474                 dptr = dma_map_single(&oct->pci_dev->dev,
1475                                       skb->data,
1476                                       skb->len,
1477                                       DMA_TO_DEVICE);
1478                 if (dma_mapping_error(&oct->pci_dev->dev, dptr)) {
1479                         dev_err(&oct->pci_dev->dev, "%s DMA mapping error 1\n",
1480                                 __func__);
1481                         return NETDEV_TX_BUSY;
1482                 }
1483
1484                 ndata.cmd.cmd3.dptr = dptr;
1485                 finfo->dptr = dptr;
1486                 ndata.reqtype = REQTYPE_NORESP_NET;
1487
1488         } else {
1489                 struct skb_frag_struct *frag;
1490                 struct octnic_gather *g;
1491                 int i, frags;
1492
1493                 spin_lock(&lio->glist_lock[q_idx]);
1494                 g = (struct octnic_gather *)
1495                         lio_list_delete_head(&lio->glist[q_idx]);
1496                 spin_unlock(&lio->glist_lock[q_idx]);
1497
1498                 if (!g) {
1499                         netif_info(lio, tx_err, lio->netdev,
1500                                    "Transmit scatter gather: glist null!\n");
1501                         goto lio_xmit_failed;
1502                 }
1503
1504                 cmdsetup.s.gather = 1;
1505                 cmdsetup.s.u.gatherptrs = (skb_shinfo(skb)->nr_frags + 1);
1506                 octnet_prepare_pci_cmd(oct, &ndata.cmd, &cmdsetup, tag);
1507
1508                 memset(g->sg, 0, g->sg_size);
1509
1510                 g->sg[0].ptr[0] = dma_map_single(&oct->pci_dev->dev,
1511                                                  skb->data,
1512                                                  (skb->len - skb->data_len),
1513                                                  DMA_TO_DEVICE);
1514                 if (dma_mapping_error(&oct->pci_dev->dev, g->sg[0].ptr[0])) {
1515                         dev_err(&oct->pci_dev->dev, "%s DMA mapping error 2\n",
1516                                 __func__);
1517                         return NETDEV_TX_BUSY;
1518                 }
1519                 add_sg_size(&g->sg[0], (skb->len - skb->data_len), 0);
1520
1521                 frags = skb_shinfo(skb)->nr_frags;
1522                 i = 1;
1523                 while (frags--) {
1524                         frag = &skb_shinfo(skb)->frags[i - 1];
1525
1526                         g->sg[(i >> 2)].ptr[(i & 3)] =
1527                                 dma_map_page(&oct->pci_dev->dev,
1528                                              frag->page.p,
1529                                              frag->page_offset,
1530                                              frag->size,
1531                                              DMA_TO_DEVICE);
1532                         if (dma_mapping_error(&oct->pci_dev->dev,
1533                                               g->sg[i >> 2].ptr[i & 3])) {
1534                                 dma_unmap_single(&oct->pci_dev->dev,
1535                                                  g->sg[0].ptr[0],
1536                                                  skb->len - skb->data_len,
1537                                                  DMA_TO_DEVICE);
1538                                 for (j = 1; j < i; j++) {
1539                                         frag = &skb_shinfo(skb)->frags[j - 1];
1540                                         dma_unmap_page(&oct->pci_dev->dev,
1541                                                        g->sg[j >> 2].ptr[j & 3],
1542                                                        frag->size,
1543                                                        DMA_TO_DEVICE);
1544                                 }
1545                                 dev_err(&oct->pci_dev->dev, "%s DMA mapping error 3\n",
1546                                         __func__);
1547                                 return NETDEV_TX_BUSY;
1548                         }
1549
1550                         add_sg_size(&g->sg[(i >> 2)], frag->size, (i & 3));
1551                         i++;
1552                 }
1553
1554                 dptr = g->sg_dma_ptr;
1555
1556                 ndata.cmd.cmd3.dptr = dptr;
1557                 finfo->dptr = dptr;
1558                 finfo->g = g;
1559
1560                 ndata.reqtype = REQTYPE_NORESP_NET_SG;
1561         }
1562
1563         irh = (struct octeon_instr_irh *)&ndata.cmd.cmd3.irh;
1564         tx_info = (union tx_info *)&ndata.cmd.cmd3.ossp[0];
1565
1566         if (skb_shinfo(skb)->gso_size) {
1567                 tx_info->s.gso_size = skb_shinfo(skb)->gso_size;
1568                 tx_info->s.gso_segs = skb_shinfo(skb)->gso_segs;
1569         }
1570
1571         /* HW insert VLAN tag */
1572         if (skb_vlan_tag_present(skb)) {
1573                 irh->priority = skb_vlan_tag_get(skb) >> VLAN_PRIO_SHIFT;
1574                 irh->vlan = skb_vlan_tag_get(skb) & VLAN_VID_MASK;
1575         }
1576
1577         xmit_more = skb->xmit_more;
1578
1579         if (unlikely(cmdsetup.s.timestamp))
1580                 status = send_nic_timestamp_pkt(oct, &ndata, finfo, xmit_more);
1581         else
1582                 status = octnet_send_nic_data_pkt(oct, &ndata, xmit_more);
1583         if (status == IQ_SEND_FAILED)
1584                 goto lio_xmit_failed;
1585
1586         netif_info(lio, tx_queued, lio->netdev, "Transmit queued successfully\n");
1587
1588         if (status == IQ_SEND_STOP) {
1589                 dev_err(&oct->pci_dev->dev, "Rcvd IQ_SEND_STOP signal; stopping IQ-%d\n",
1590                         iq_no);
1591                 netif_stop_subqueue(netdev, q_idx);
1592         }
1593
1594         netif_trans_update(netdev);
1595
1596         if (tx_info->s.gso_segs)
1597                 stats->tx_done += tx_info->s.gso_segs;
1598         else
1599                 stats->tx_done++;
1600         stats->tx_tot_bytes += ndata.datasize;
1601
1602         return NETDEV_TX_OK;
1603
1604 lio_xmit_failed:
1605         stats->tx_dropped++;
1606         netif_info(lio, tx_err, lio->netdev, "IQ%d Transmit dropped:%llu\n",
1607                    iq_no, stats->tx_dropped);
1608         if (dptr)
1609                 dma_unmap_single(&oct->pci_dev->dev, dptr,
1610                                  ndata.datasize, DMA_TO_DEVICE);
1611
1612         octeon_ring_doorbell_locked(oct, iq_no);
1613
1614         tx_buffer_free(skb);
1615         return NETDEV_TX_OK;
1616 }
1617
1618 /** \brief Network device Tx timeout
1619  * @param netdev    pointer to network device
1620  */
1621 static void liquidio_tx_timeout(struct net_device *netdev)
1622 {
1623         struct lio *lio;
1624
1625         lio = GET_LIO(netdev);
1626
1627         netif_info(lio, tx_err, lio->netdev,
1628                    "Transmit timeout tx_dropped:%ld, waking up queues now!!\n",
1629                    netdev->stats.tx_dropped);
1630         netif_trans_update(netdev);
1631         wake_txqs(netdev);
1632 }
1633
1634 static int
1635 liquidio_vlan_rx_add_vid(struct net_device *netdev,
1636                          __be16 proto __attribute__((unused)), u16 vid)
1637 {
1638         struct lio *lio = GET_LIO(netdev);
1639         struct octeon_device *oct = lio->oct_dev;
1640         struct octnic_ctrl_pkt nctrl;
1641         struct completion compl;
1642         u16 response_code;
1643         int ret = 0;
1644
1645         memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
1646
1647         nctrl.ncmd.u64 = 0;
1648         nctrl.ncmd.s.cmd = OCTNET_CMD_ADD_VLAN_FILTER;
1649         nctrl.ncmd.s.param1 = vid;
1650         nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
1651         nctrl.wait_time = 100;
1652         nctrl.netpndev = (u64)netdev;
1653         nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
1654         init_completion(&compl);
1655         nctrl.completion = &compl;
1656         nctrl.response_code = &response_code;
1657
1658         ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
1659         if (ret < 0) {
1660                 dev_err(&oct->pci_dev->dev, "Add VLAN filter failed in core (ret: 0x%x)\n",
1661                         ret);
1662                 return -EIO;
1663         }
1664
1665         if (!wait_for_completion_timeout(&compl,
1666                                          msecs_to_jiffies(nctrl.wait_time)))
1667                 return -EPERM;
1668
1669         if (READ_ONCE(response_code))
1670                 return -EPERM;
1671
1672         return 0;
1673 }
1674
1675 static int
1676 liquidio_vlan_rx_kill_vid(struct net_device *netdev,
1677                           __be16 proto __attribute__((unused)), u16 vid)
1678 {
1679         struct lio *lio = GET_LIO(netdev);
1680         struct octeon_device *oct = lio->oct_dev;
1681         struct octnic_ctrl_pkt nctrl;
1682         int ret = 0;
1683
1684         memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
1685
1686         nctrl.ncmd.u64 = 0;
1687         nctrl.ncmd.s.cmd = OCTNET_CMD_DEL_VLAN_FILTER;
1688         nctrl.ncmd.s.param1 = vid;
1689         nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
1690         nctrl.wait_time = 100;
1691         nctrl.netpndev = (u64)netdev;
1692         nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
1693
1694         ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
1695         if (ret < 0) {
1696                 dev_err(&oct->pci_dev->dev, "Del VLAN filter failed in core (ret: 0x%x)\n",
1697                         ret);
1698         }
1699         return ret;
1700 }
1701
1702 /** Sending command to enable/disable RX checksum offload
1703  * @param netdev                pointer to network device
1704  * @param command               OCTNET_CMD_TNL_RX_CSUM_CTL
1705  * @param rx_cmd_bit            OCTNET_CMD_RXCSUM_ENABLE/
1706  *                              OCTNET_CMD_RXCSUM_DISABLE
1707  * @returns                     SUCCESS or FAILURE
1708  */
1709 static int liquidio_set_rxcsum_command(struct net_device *netdev, int command,
1710                                        u8 rx_cmd)
1711 {
1712         struct lio *lio = GET_LIO(netdev);
1713         struct octeon_device *oct = lio->oct_dev;
1714         struct octnic_ctrl_pkt nctrl;
1715         int ret = 0;
1716
1717         memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
1718
1719         nctrl.ncmd.u64 = 0;
1720         nctrl.ncmd.s.cmd = command;
1721         nctrl.ncmd.s.param1 = rx_cmd;
1722         nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
1723         nctrl.wait_time = 100;
1724         nctrl.netpndev = (u64)netdev;
1725         nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
1726
1727         ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
1728         if (ret < 0) {
1729                 dev_err(&oct->pci_dev->dev, "DEVFLAGS RXCSUM change failed in core (ret:0x%x)\n",
1730                         ret);
1731         }
1732         return ret;
1733 }
1734
1735 /** Sending command to add/delete VxLAN UDP port to firmware
1736  * @param netdev                pointer to network device
1737  * @param command               OCTNET_CMD_VXLAN_PORT_CONFIG
1738  * @param vxlan_port            VxLAN port to be added or deleted
1739  * @param vxlan_cmd_bit         OCTNET_CMD_VXLAN_PORT_ADD,
1740  *                              OCTNET_CMD_VXLAN_PORT_DEL
1741  * @returns                     SUCCESS or FAILURE
1742  */
1743 static int liquidio_vxlan_port_command(struct net_device *netdev, int command,
1744                                        u16 vxlan_port, u8 vxlan_cmd_bit)
1745 {
1746         struct lio *lio = GET_LIO(netdev);
1747         struct octeon_device *oct = lio->oct_dev;
1748         struct octnic_ctrl_pkt nctrl;
1749         int ret = 0;
1750
1751         memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
1752
1753         nctrl.ncmd.u64 = 0;
1754         nctrl.ncmd.s.cmd = command;
1755         nctrl.ncmd.s.more = vxlan_cmd_bit;
1756         nctrl.ncmd.s.param1 = vxlan_port;
1757         nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
1758         nctrl.wait_time = 100;
1759         nctrl.netpndev = (u64)netdev;
1760         nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
1761
1762         ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
1763         if (ret < 0) {
1764                 dev_err(&oct->pci_dev->dev,
1765                         "DEVFLAGS VxLAN port add/delete failed in core (ret : 0x%x)\n",
1766                         ret);
1767         }
1768         return ret;
1769 }
1770
1771 /** \brief Net device fix features
1772  * @param netdev  pointer to network device
1773  * @param request features requested
1774  * @returns updated features list
1775  */
1776 static netdev_features_t liquidio_fix_features(struct net_device *netdev,
1777                                                netdev_features_t request)
1778 {
1779         struct lio *lio = netdev_priv(netdev);
1780
1781         if ((request & NETIF_F_RXCSUM) &&
1782             !(lio->dev_capability & NETIF_F_RXCSUM))
1783                 request &= ~NETIF_F_RXCSUM;
1784
1785         if ((request & NETIF_F_HW_CSUM) &&
1786             !(lio->dev_capability & NETIF_F_HW_CSUM))
1787                 request &= ~NETIF_F_HW_CSUM;
1788
1789         if ((request & NETIF_F_TSO) && !(lio->dev_capability & NETIF_F_TSO))
1790                 request &= ~NETIF_F_TSO;
1791
1792         if ((request & NETIF_F_TSO6) && !(lio->dev_capability & NETIF_F_TSO6))
1793                 request &= ~NETIF_F_TSO6;
1794
1795         if ((request & NETIF_F_LRO) && !(lio->dev_capability & NETIF_F_LRO))
1796                 request &= ~NETIF_F_LRO;
1797
1798         /* Disable LRO if RXCSUM is off */
1799         if (!(request & NETIF_F_RXCSUM) && (netdev->features & NETIF_F_LRO) &&
1800             (lio->dev_capability & NETIF_F_LRO))
1801                 request &= ~NETIF_F_LRO;
1802
1803         return request;
1804 }
1805
1806 /** \brief Net device set features
1807  * @param netdev  pointer to network device
1808  * @param features features to enable/disable
1809  */
1810 static int liquidio_set_features(struct net_device *netdev,
1811                                  netdev_features_t features)
1812 {
1813         struct lio *lio = netdev_priv(netdev);
1814
1815         if (!((netdev->features ^ features) & NETIF_F_LRO))
1816                 return 0;
1817
1818         if ((features & NETIF_F_LRO) && (lio->dev_capability & NETIF_F_LRO))
1819                 liquidio_set_feature(netdev, OCTNET_CMD_LRO_ENABLE,
1820                                      OCTNIC_LROIPV4 | OCTNIC_LROIPV6);
1821         else if (!(features & NETIF_F_LRO) &&
1822                  (lio->dev_capability & NETIF_F_LRO))
1823                 liquidio_set_feature(netdev, OCTNET_CMD_LRO_DISABLE,
1824                                      OCTNIC_LROIPV4 | OCTNIC_LROIPV6);
1825         if (!(netdev->features & NETIF_F_RXCSUM) &&
1826             (lio->enc_dev_capability & NETIF_F_RXCSUM) &&
1827             (features & NETIF_F_RXCSUM))
1828                 liquidio_set_rxcsum_command(netdev, OCTNET_CMD_TNL_RX_CSUM_CTL,
1829                                             OCTNET_CMD_RXCSUM_ENABLE);
1830         else if ((netdev->features & NETIF_F_RXCSUM) &&
1831                  (lio->enc_dev_capability & NETIF_F_RXCSUM) &&
1832                  !(features & NETIF_F_RXCSUM))
1833                 liquidio_set_rxcsum_command(netdev, OCTNET_CMD_TNL_RX_CSUM_CTL,
1834                                             OCTNET_CMD_RXCSUM_DISABLE);
1835
1836         return 0;
1837 }
1838
1839 static void liquidio_add_vxlan_port(struct net_device *netdev,
1840                                     struct udp_tunnel_info *ti)
1841 {
1842         if (ti->type != UDP_TUNNEL_TYPE_VXLAN)
1843                 return;
1844
1845         liquidio_vxlan_port_command(netdev,
1846                                     OCTNET_CMD_VXLAN_PORT_CONFIG,
1847                                     htons(ti->port),
1848                                     OCTNET_CMD_VXLAN_PORT_ADD);
1849 }
1850
1851 static void liquidio_del_vxlan_port(struct net_device *netdev,
1852                                     struct udp_tunnel_info *ti)
1853 {
1854         if (ti->type != UDP_TUNNEL_TYPE_VXLAN)
1855                 return;
1856
1857         liquidio_vxlan_port_command(netdev,
1858                                     OCTNET_CMD_VXLAN_PORT_CONFIG,
1859                                     htons(ti->port),
1860                                     OCTNET_CMD_VXLAN_PORT_DEL);
1861 }
1862
1863 static const struct net_device_ops lionetdevops = {
1864         .ndo_open               = liquidio_open,
1865         .ndo_stop               = liquidio_stop,
1866         .ndo_start_xmit         = liquidio_xmit,
1867         .ndo_get_stats64        = liquidio_get_stats64,
1868         .ndo_set_mac_address    = liquidio_set_mac,
1869         .ndo_set_rx_mode        = liquidio_set_mcast_list,
1870         .ndo_tx_timeout         = liquidio_tx_timeout,
1871         .ndo_vlan_rx_add_vid    = liquidio_vlan_rx_add_vid,
1872         .ndo_vlan_rx_kill_vid   = liquidio_vlan_rx_kill_vid,
1873         .ndo_change_mtu         = liquidio_change_mtu,
1874         .ndo_do_ioctl           = liquidio_ioctl,
1875         .ndo_fix_features       = liquidio_fix_features,
1876         .ndo_set_features       = liquidio_set_features,
1877         .ndo_udp_tunnel_add     = liquidio_add_vxlan_port,
1878         .ndo_udp_tunnel_del     = liquidio_del_vxlan_port,
1879 };
1880
1881 static int lio_nic_info(struct octeon_recv_info *recv_info, void *buf)
1882 {
1883         struct octeon_device *oct = (struct octeon_device *)buf;
1884         struct octeon_recv_pkt *recv_pkt = recv_info->recv_pkt;
1885         union oct_link_status *ls;
1886         int gmxport = 0;
1887         int i;
1888
1889         if (recv_pkt->buffer_size[0] != (sizeof(*ls) + OCT_DROQ_INFO_SIZE)) {
1890                 dev_err(&oct->pci_dev->dev, "Malformed NIC_INFO, len=%d, ifidx=%d\n",
1891                         recv_pkt->buffer_size[0],
1892                         recv_pkt->rh.r_nic_info.gmxport);
1893                 goto nic_info_err;
1894         }
1895
1896         gmxport = recv_pkt->rh.r_nic_info.gmxport;
1897         ls = (union oct_link_status *)(get_rbd(recv_pkt->buffer_ptr[0]) +
1898                 OCT_DROQ_INFO_SIZE);
1899
1900         octeon_swap_8B_data((u64 *)ls, (sizeof(union oct_link_status)) >> 3);
1901
1902         for (i = 0; i < oct->ifcount; i++) {
1903                 if (oct->props[i].gmxport == gmxport) {
1904                         update_link_status(oct->props[i].netdev, ls);
1905                         break;
1906                 }
1907         }
1908
1909 nic_info_err:
1910         for (i = 0; i < recv_pkt->buffer_count; i++)
1911                 recv_buffer_free(recv_pkt->buffer_ptr[i]);
1912         octeon_free_recv_info(recv_info);
1913         return 0;
1914 }
1915
1916 /**
1917  * \brief Setup network interfaces
1918  * @param octeon_dev  octeon device
1919  *
1920  * Called during init time for each device. It assumes the NIC
1921  * is already up and running.  The link information for each
1922  * interface is passed in link_info.
1923  */
1924 static int setup_nic_devices(struct octeon_device *octeon_dev)
1925 {
1926         int retval, num_iqueues, num_oqueues;
1927         struct liquidio_if_cfg_context *ctx;
1928         u32 resp_size, ctx_size, data_size;
1929         struct liquidio_if_cfg_resp *resp;
1930         struct octeon_soft_command *sc;
1931         union oct_nic_if_cfg if_cfg;
1932         struct octdev_props *props;
1933         struct net_device *netdev;
1934         struct lio_version *vdata;
1935         struct lio *lio = NULL;
1936         u8 mac[ETH_ALEN], i, j;
1937         u32 ifidx_or_pfnum;
1938
1939         ifidx_or_pfnum = octeon_dev->pf_num;
1940
1941         /* This is to handle link status changes */
1942         octeon_register_dispatch_fn(octeon_dev, OPCODE_NIC, OPCODE_NIC_INFO,
1943                                     lio_nic_info, octeon_dev);
1944
1945         /* REQTYPE_RESP_NET and REQTYPE_SOFT_COMMAND do not have free functions.
1946          * They are handled directly.
1947          */
1948         octeon_register_reqtype_free_fn(octeon_dev, REQTYPE_NORESP_NET,
1949                                         free_netbuf);
1950
1951         octeon_register_reqtype_free_fn(octeon_dev, REQTYPE_NORESP_NET_SG,
1952                                         free_netsgbuf);
1953
1954         octeon_register_reqtype_free_fn(octeon_dev, REQTYPE_RESP_NET_SG,
1955                                         free_netsgbuf_with_resp);
1956
1957         for (i = 0; i < octeon_dev->ifcount; i++) {
1958                 resp_size = sizeof(struct liquidio_if_cfg_resp);
1959                 ctx_size = sizeof(struct liquidio_if_cfg_context);
1960                 data_size = sizeof(struct lio_version);
1961                 sc = (struct octeon_soft_command *)
1962                         octeon_alloc_soft_command(octeon_dev, data_size,
1963                                                   resp_size, ctx_size);
1964                 resp = (struct liquidio_if_cfg_resp *)sc->virtrptr;
1965                 ctx  = (struct liquidio_if_cfg_context *)sc->ctxptr;
1966                 vdata = (struct lio_version *)sc->virtdptr;
1967
1968                 *((u64 *)vdata) = 0;
1969                 vdata->major = cpu_to_be16(LIQUIDIO_BASE_MAJOR_VERSION);
1970                 vdata->minor = cpu_to_be16(LIQUIDIO_BASE_MINOR_VERSION);
1971                 vdata->micro = cpu_to_be16(LIQUIDIO_BASE_MICRO_VERSION);
1972
1973                 WRITE_ONCE(ctx->cond, 0);
1974                 ctx->octeon_id = lio_get_device_id(octeon_dev);
1975                 init_waitqueue_head(&ctx->wc);
1976
1977                 if_cfg.u64 = 0;
1978
1979                 if_cfg.s.num_iqueues = octeon_dev->sriov_info.rings_per_vf;
1980                 if_cfg.s.num_oqueues = octeon_dev->sriov_info.rings_per_vf;
1981                 if_cfg.s.base_queue = 0;
1982
1983                 sc->iq_no = 0;
1984
1985                 octeon_prepare_soft_command(octeon_dev, sc, OPCODE_NIC,
1986                                             OPCODE_NIC_IF_CFG, 0, if_cfg.u64,
1987                                             0);
1988
1989                 sc->callback = lio_if_cfg_callback;
1990                 sc->callback_arg = sc;
1991                 sc->wait_time = 5000;
1992
1993                 retval = octeon_send_soft_command(octeon_dev, sc);
1994                 if (retval == IQ_SEND_FAILED) {
1995                         dev_err(&octeon_dev->pci_dev->dev,
1996                                 "iq/oq config failed status: %x\n", retval);
1997                         /* Soft instr is freed by driver in case of failure. */
1998                         goto setup_nic_dev_fail;
1999                 }
2000
2001                 /* Sleep on a wait queue till the cond flag indicates that the
2002                  * response arrived or timed-out.
2003                  */
2004                 if (sleep_cond(&ctx->wc, &ctx->cond) == -EINTR) {
2005                         dev_err(&octeon_dev->pci_dev->dev, "Wait interrupted\n");
2006                         goto setup_nic_wait_intr;
2007                 }
2008
2009                 retval = resp->status;
2010                 if (retval) {
2011                         dev_err(&octeon_dev->pci_dev->dev, "iq/oq config failed\n");
2012                         goto setup_nic_dev_fail;
2013                 }
2014
2015                 octeon_swap_8B_data((u64 *)(&resp->cfg_info),
2016                                     (sizeof(struct liquidio_if_cfg_info)) >> 3);
2017
2018                 num_iqueues = hweight64(resp->cfg_info.iqmask);
2019                 num_oqueues = hweight64(resp->cfg_info.oqmask);
2020
2021                 if (!(num_iqueues) || !(num_oqueues)) {
2022                         dev_err(&octeon_dev->pci_dev->dev,
2023                                 "Got bad iqueues (%016llx) or oqueues (%016llx) from firmware.\n",
2024                                 resp->cfg_info.iqmask, resp->cfg_info.oqmask);
2025                         goto setup_nic_dev_fail;
2026                 }
2027                 dev_dbg(&octeon_dev->pci_dev->dev,
2028                         "interface %d, iqmask %016llx, oqmask %016llx, numiqueues %d, numoqueues %d\n",
2029                         i, resp->cfg_info.iqmask, resp->cfg_info.oqmask,
2030                         num_iqueues, num_oqueues);
2031
2032                 netdev = alloc_etherdev_mq(LIO_SIZE, num_iqueues);
2033
2034                 if (!netdev) {
2035                         dev_err(&octeon_dev->pci_dev->dev, "Device allocation failed\n");
2036                         goto setup_nic_dev_fail;
2037                 }
2038
2039                 SET_NETDEV_DEV(netdev, &octeon_dev->pci_dev->dev);
2040
2041                 /* Associate the routines that will handle different
2042                  * netdev tasks.
2043                  */
2044                 netdev->netdev_ops = &lionetdevops;
2045
2046                 lio = GET_LIO(netdev);
2047
2048                 memset(lio, 0, sizeof(struct lio));
2049
2050                 lio->ifidx = ifidx_or_pfnum;
2051
2052                 props = &octeon_dev->props[i];
2053                 props->gmxport = resp->cfg_info.linfo.gmxport;
2054                 props->netdev = netdev;
2055
2056                 lio->linfo.num_rxpciq = num_oqueues;
2057                 lio->linfo.num_txpciq = num_iqueues;
2058
2059                 for (j = 0; j < num_oqueues; j++) {
2060                         lio->linfo.rxpciq[j].u64 =
2061                             resp->cfg_info.linfo.rxpciq[j].u64;
2062                 }
2063                 for (j = 0; j < num_iqueues; j++) {
2064                         lio->linfo.txpciq[j].u64 =
2065                             resp->cfg_info.linfo.txpciq[j].u64;
2066                 }
2067
2068                 lio->linfo.hw_addr = resp->cfg_info.linfo.hw_addr;
2069                 lio->linfo.gmxport = resp->cfg_info.linfo.gmxport;
2070                 lio->linfo.link.u64 = resp->cfg_info.linfo.link.u64;
2071                 lio->linfo.macaddr_is_admin_asgnd =
2072                         resp->cfg_info.linfo.macaddr_is_admin_asgnd;
2073
2074                 lio->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE);
2075
2076                 lio->dev_capability = NETIF_F_HIGHDMA
2077                                       | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM
2078                                       | NETIF_F_SG | NETIF_F_RXCSUM
2079                                       | NETIF_F_TSO | NETIF_F_TSO6
2080                                       | NETIF_F_GRO
2081                                       | NETIF_F_LRO;
2082                 netif_set_gso_max_size(netdev, OCTNIC_GSO_MAX_SIZE);
2083
2084                 /* Copy of transmit encapsulation capabilities:
2085                  * TSO, TSO6, Checksums for this device
2086                  */
2087                 lio->enc_dev_capability = NETIF_F_IP_CSUM
2088                                           | NETIF_F_IPV6_CSUM
2089                                           | NETIF_F_GSO_UDP_TUNNEL
2090                                           | NETIF_F_HW_CSUM | NETIF_F_SG
2091                                           | NETIF_F_RXCSUM
2092                                           | NETIF_F_TSO | NETIF_F_TSO6
2093                                           | NETIF_F_LRO;
2094
2095                 netdev->hw_enc_features =
2096                     (lio->enc_dev_capability & ~NETIF_F_LRO);
2097                 netdev->vlan_features = lio->dev_capability;
2098                 /* Add any unchangeable hw features */
2099                 lio->dev_capability |= NETIF_F_HW_VLAN_CTAG_FILTER |
2100                                        NETIF_F_HW_VLAN_CTAG_RX |
2101                                        NETIF_F_HW_VLAN_CTAG_TX;
2102
2103                 netdev->features = (lio->dev_capability & ~NETIF_F_LRO);
2104
2105                 netdev->hw_features = lio->dev_capability;
2106                 netdev->hw_features &= ~NETIF_F_HW_VLAN_CTAG_RX;
2107
2108                 /* MTU range: 68 - 16000 */
2109                 netdev->min_mtu = LIO_MIN_MTU_SIZE;
2110                 netdev->max_mtu = LIO_MAX_MTU_SIZE;
2111
2112                 /* Point to the  properties for octeon device to which this
2113                  * interface belongs.
2114                  */
2115                 lio->oct_dev = octeon_dev;
2116                 lio->octprops = props;
2117                 lio->netdev = netdev;
2118
2119                 dev_dbg(&octeon_dev->pci_dev->dev,
2120                         "if%d gmx: %d hw_addr: 0x%llx\n", i,
2121                         lio->linfo.gmxport, CVM_CAST64(lio->linfo.hw_addr));
2122
2123                 /* 64-bit swap required on LE machines */
2124                 octeon_swap_8B_data(&lio->linfo.hw_addr, 1);
2125                 for (j = 0; j < ETH_ALEN; j++)
2126                         mac[j] = *((u8 *)(((u8 *)&lio->linfo.hw_addr) + 2 + j));
2127
2128                 /* Copy MAC Address to OS network device structure */
2129                 ether_addr_copy(netdev->dev_addr, mac);
2130
2131                 if (liquidio_setup_io_queues(octeon_dev, i,
2132                                              lio->linfo.num_txpciq,
2133                                              lio->linfo.num_rxpciq)) {
2134                         dev_err(&octeon_dev->pci_dev->dev, "I/O queues creation failed\n");
2135                         goto setup_nic_dev_fail;
2136                 }
2137
2138                 ifstate_set(lio, LIO_IFSTATE_DROQ_OPS);
2139
2140                 /* For VFs, enable Octeon device interrupts here,
2141                  * as this is contingent upon IO queue setup
2142                  */
2143                 octeon_dev->fn_list.enable_interrupt(octeon_dev,
2144                                                      OCTEON_ALL_INTR);
2145
2146                 /* By default all interfaces on a single Octeon uses the same
2147                  * tx and rx queues
2148                  */
2149                 lio->txq = lio->linfo.txpciq[0].s.q_no;
2150                 lio->rxq = lio->linfo.rxpciq[0].s.q_no;
2151
2152                 lio->tx_qsize = octeon_get_tx_qsize(octeon_dev, lio->txq);
2153                 lio->rx_qsize = octeon_get_rx_qsize(octeon_dev, lio->rxq);
2154
2155                 if (lio_setup_glists(octeon_dev, lio, num_iqueues)) {
2156                         dev_err(&octeon_dev->pci_dev->dev,
2157                                 "Gather list allocation failed\n");
2158                         goto setup_nic_dev_fail;
2159                 }
2160
2161                 /* Register ethtool support */
2162                 liquidio_set_ethtool_ops(netdev);
2163                 if (lio->oct_dev->chip_id == OCTEON_CN23XX_VF_VID)
2164                         octeon_dev->priv_flags = OCT_PRIV_FLAG_DEFAULT;
2165                 else
2166                         octeon_dev->priv_flags = 0x0;
2167
2168                 if (netdev->features & NETIF_F_LRO)
2169                         liquidio_set_feature(netdev, OCTNET_CMD_LRO_ENABLE,
2170                                              OCTNIC_LROIPV4 | OCTNIC_LROIPV6);
2171
2172                 if (setup_link_status_change_wq(netdev))
2173                         goto setup_nic_dev_fail;
2174
2175                 if (setup_rx_oom_poll_fn(netdev))
2176                         goto setup_nic_dev_fail;
2177
2178                 /* Register the network device with the OS */
2179                 if (register_netdev(netdev)) {
2180                         dev_err(&octeon_dev->pci_dev->dev, "Device registration failed\n");
2181                         goto setup_nic_dev_fail;
2182                 }
2183
2184                 dev_dbg(&octeon_dev->pci_dev->dev,
2185                         "Setup NIC ifidx:%d mac:%02x%02x%02x%02x%02x%02x\n",
2186                         i, mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
2187                 netif_carrier_off(netdev);
2188                 lio->link_changes++;
2189
2190                 ifstate_set(lio, LIO_IFSTATE_REGISTERED);
2191
2192                 /* Sending command to firmware to enable Rx checksum offload
2193                  * by default at the time of setup of Liquidio driver for
2194                  * this device
2195                  */
2196                 liquidio_set_rxcsum_command(netdev, OCTNET_CMD_TNL_RX_CSUM_CTL,
2197                                             OCTNET_CMD_RXCSUM_ENABLE);
2198                 liquidio_set_feature(netdev, OCTNET_CMD_TNL_TX_CSUM_CTL,
2199                                      OCTNET_CMD_TXCSUM_ENABLE);
2200
2201                 dev_dbg(&octeon_dev->pci_dev->dev,
2202                         "NIC ifidx:%d Setup successful\n", i);
2203
2204                 octeon_free_soft_command(octeon_dev, sc);
2205
2206                 octeon_dev->no_speed_setting = 1;
2207         }
2208
2209         return 0;
2210
2211 setup_nic_dev_fail:
2212
2213         octeon_free_soft_command(octeon_dev, sc);
2214
2215 setup_nic_wait_intr:
2216
2217         while (i--) {
2218                 dev_err(&octeon_dev->pci_dev->dev,
2219                         "NIC ifidx:%d Setup failed\n", i);
2220                 liquidio_destroy_nic_device(octeon_dev, i);
2221         }
2222         return -ENODEV;
2223 }
2224
2225 /**
2226  * \brief initialize the NIC
2227  * @param oct octeon device
2228  *
2229  * This initialization routine is called once the Octeon device application is
2230  * up and running
2231  */
2232 static int liquidio_init_nic_module(struct octeon_device *oct)
2233 {
2234         int num_nic_ports = 1;
2235         int i, retval = 0;
2236
2237         dev_dbg(&oct->pci_dev->dev, "Initializing network interfaces\n");
2238
2239         /* only default iq and oq were initialized
2240          * initialize the rest as well run port_config command for each port
2241          */
2242         oct->ifcount = num_nic_ports;
2243         memset(oct->props, 0,
2244                sizeof(struct octdev_props) * num_nic_ports);
2245
2246         for (i = 0; i < MAX_OCTEON_LINKS; i++)
2247                 oct->props[i].gmxport = -1;
2248
2249         retval = setup_nic_devices(oct);
2250         if (retval) {
2251                 dev_err(&oct->pci_dev->dev, "Setup NIC devices failed\n");
2252                 goto octnet_init_failure;
2253         }
2254
2255         dev_dbg(&oct->pci_dev->dev, "Network interfaces ready\n");
2256
2257         return retval;
2258
2259 octnet_init_failure:
2260
2261         oct->ifcount = 0;
2262
2263         return retval;
2264 }
2265
2266 /**
2267  * \brief Device initialization for each Octeon device that is probed
2268  * @param octeon_dev  octeon device
2269  */
2270 static int octeon_device_init(struct octeon_device *oct)
2271 {
2272         u32 rev_id;
2273         int j;
2274
2275         atomic_set(&oct->status, OCT_DEV_BEGIN_STATE);
2276
2277         /* Enable access to the octeon device and make its DMA capability
2278          * known to the OS.
2279          */
2280         if (octeon_pci_os_setup(oct))
2281                 return 1;
2282         atomic_set(&oct->status, OCT_DEV_PCI_ENABLE_DONE);
2283
2284         oct->chip_id = OCTEON_CN23XX_VF_VID;
2285         pci_read_config_dword(oct->pci_dev, 8, &rev_id);
2286         oct->rev_id = rev_id & 0xff;
2287
2288         if (cn23xx_setup_octeon_vf_device(oct))
2289                 return 1;
2290
2291         atomic_set(&oct->status, OCT_DEV_PCI_MAP_DONE);
2292
2293         oct->app_mode = CVM_DRV_NIC_APP;
2294
2295         /* Initialize the dispatch mechanism used to push packets arriving on
2296          * Octeon Output queues.
2297          */
2298         if (octeon_init_dispatch_list(oct))
2299                 return 1;
2300
2301         atomic_set(&oct->status, OCT_DEV_DISPATCH_INIT_DONE);
2302
2303         if (octeon_set_io_queues_off(oct)) {
2304                 dev_err(&oct->pci_dev->dev, "setting io queues off failed\n");
2305                 return 1;
2306         }
2307
2308         if (oct->fn_list.setup_device_regs(oct)) {
2309                 dev_err(&oct->pci_dev->dev, "device registers configuration failed\n");
2310                 return 1;
2311         }
2312
2313         /* Initialize soft command buffer pool */
2314         if (octeon_setup_sc_buffer_pool(oct)) {
2315                 dev_err(&oct->pci_dev->dev, "sc buffer pool allocation failed\n");
2316                 return 1;
2317         }
2318         atomic_set(&oct->status, OCT_DEV_SC_BUFF_POOL_INIT_DONE);
2319
2320         /* Setup the data structures that manage this Octeon's Input queues. */
2321         if (octeon_setup_instr_queues(oct)) {
2322                 dev_err(&oct->pci_dev->dev, "instruction queue initialization failed\n");
2323                 return 1;
2324         }
2325         atomic_set(&oct->status, OCT_DEV_INSTR_QUEUE_INIT_DONE);
2326
2327         /* Initialize lists to manage the requests of different types that
2328          * arrive from user & kernel applications for this octeon device.
2329          */
2330         if (octeon_setup_response_list(oct)) {
2331                 dev_err(&oct->pci_dev->dev, "Response list allocation failed\n");
2332                 return 1;
2333         }
2334         atomic_set(&oct->status, OCT_DEV_RESP_LIST_INIT_DONE);
2335
2336         if (octeon_setup_output_queues(oct)) {
2337                 dev_err(&oct->pci_dev->dev, "Output queue initialization failed\n");
2338                 return 1;
2339         }
2340         atomic_set(&oct->status, OCT_DEV_DROQ_INIT_DONE);
2341
2342         if (oct->fn_list.setup_mbox(oct)) {
2343                 dev_err(&oct->pci_dev->dev, "Mailbox setup failed\n");
2344                 return 1;
2345         }
2346         atomic_set(&oct->status, OCT_DEV_MBOX_SETUP_DONE);
2347
2348         if (octeon_allocate_ioq_vector(oct, oct->sriov_info.rings_per_vf)) {
2349                 dev_err(&oct->pci_dev->dev, "ioq vector allocation failed\n");
2350                 return 1;
2351         }
2352         atomic_set(&oct->status, OCT_DEV_MSIX_ALLOC_VECTOR_DONE);
2353
2354         dev_info(&oct->pci_dev->dev, "OCTEON_CN23XX VF Version: %s, %d ioqs\n",
2355                  LIQUIDIO_VERSION, oct->sriov_info.rings_per_vf);
2356
2357         /* Setup the interrupt handler and record the INT SUM register address*/
2358         if (octeon_setup_interrupt(oct, oct->sriov_info.rings_per_vf))
2359                 return 1;
2360
2361         atomic_set(&oct->status, OCT_DEV_INTR_SET_DONE);
2362
2363         /* ***************************************************************
2364          * The interrupts need to be enabled for the PF<-->VF handshake.
2365          * They are [re]-enabled after the PF<-->VF handshake so that the
2366          * correct OQ tick value is used (i.e. the value retrieved from
2367          * the PF as part of the handshake).
2368          */
2369
2370         /* Enable Octeon device interrupts */
2371         oct->fn_list.enable_interrupt(oct, OCTEON_ALL_INTR);
2372
2373         if (cn23xx_octeon_pfvf_handshake(oct))
2374                 return 1;
2375
2376         /* Here we [re]-enable the interrupts so that the correct OQ tick value
2377          * is used (i.e. the value that was retrieved during the handshake)
2378          */
2379
2380         /* Enable Octeon device interrupts */
2381         oct->fn_list.enable_interrupt(oct, OCTEON_ALL_INTR);
2382         /* *************************************************************** */
2383
2384         /* Enable the input and output queues for this Octeon device */
2385         if (oct->fn_list.enable_io_queues(oct)) {
2386                 dev_err(&oct->pci_dev->dev, "enabling io queues failed\n");
2387                 return 1;
2388         }
2389
2390         atomic_set(&oct->status, OCT_DEV_IO_QUEUES_DONE);
2391
2392         atomic_set(&oct->status, OCT_DEV_HOST_OK);
2393
2394         /* Send Credit for Octeon Output queues. Credits are always sent after
2395          * the output queue is enabled.
2396          */
2397         for (j = 0; j < oct->num_oqs; j++)
2398                 writel(oct->droq[j]->max_count, oct->droq[j]->pkts_credit_reg);
2399
2400         /* Packets can start arriving on the output queues from this point. */
2401
2402         atomic_set(&oct->status, OCT_DEV_CORE_OK);
2403
2404         atomic_set(&oct->status, OCT_DEV_RUNNING);
2405
2406         if (liquidio_init_nic_module(oct))
2407                 return 1;
2408
2409         return 0;
2410 }
2411
2412 static int __init liquidio_vf_init(void)
2413 {
2414         octeon_init_device_list(0);
2415         return pci_register_driver(&liquidio_vf_pci_driver);
2416 }
2417
2418 static void __exit liquidio_vf_exit(void)
2419 {
2420         pci_unregister_driver(&liquidio_vf_pci_driver);
2421
2422         pr_info("LiquidIO_VF network module is now unloaded\n");
2423 }
2424
2425 module_init(liquidio_vf_init);
2426 module_exit(liquidio_vf_exit);