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
  36 static int debug = -1;
  37 module_param(debug, int, 0644);
  38 MODULE_PARM_DESC(debug, "NETIF_MSG debug bits");
  39
  40 #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
  41
  42 struct oct_timestamp_resp {
  43         u64 rh;
  44         u64 timestamp;
  45         u64 status;
  46 };
  47
  48 union tx_info {
  49         u64 u64;
  50         struct {
  51 #ifdef __BIG_ENDIAN_BITFIELD
  52                 u16 gso_size;
  53                 u16 gso_segs;
  54                 u32 reserved;
  55 #else
  56                 u32 reserved;
  57                 u16 gso_segs;
  58                 u16 gso_size;
  59 #endif
  60         } s;
  61 };
  62
  63 #define OCTNIC_GSO_MAX_HEADER_SIZE 128
  64 #define OCTNIC_GSO_MAX_SIZE \
  65                 (CN23XX_DEFAULT_INPUT_JABBER - OCTNIC_GSO_MAX_HEADER_SIZE)
  66
  67 static int
  68 liquidio_vf_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
  69 static void liquidio_vf_remove(struct pci_dev *pdev);
  70 static int octeon_device_init(struct octeon_device *oct);
  71 static int liquidio_stop(struct net_device *netdev);
  72
  73 static int lio_wait_for_oq_pkts(struct octeon_device *oct)
  74 {
  75         struct octeon_device_priv *oct_priv = oct->priv;
  76         int retry = MAX_IO_PENDING_PKT_COUNT;
  77         int pkt_cnt = 0, pending_pkts;
  78         int i;
  79
  80         do {
  81                 pending_pkts = 0;
  82
  83                 for (i = 0; i < MAX_OCTEON_OUTPUT_QUEUES(oct); i++) {
  84                         if (!(oct->io_qmask.oq & BIT_ULL(i)))
  85                                 continue;
  86                         pkt_cnt += octeon_droq_check_hw_for_pkts(oct->droq[i]);
  87                 }
  88                 if (pkt_cnt > 0) {
  89                         pending_pkts += pkt_cnt;
  90                         tasklet_schedule(&oct_priv->droq_tasklet);
  91                 }
  92                 pkt_cnt = 0;
  93                 schedule_timeout_uninterruptible(1);
  94
  95         } while (retry-- && pending_pkts);
  96
  97         return pkt_cnt;
  98 }
  99
 100 /**
 101  * pcierror_quiesce_device - Cause device to go quiet so it can be safely removed/reset/etc
 102  * @oct: Pointer to Octeon device
 103  */
 104 static void pcierror_quiesce_device(struct octeon_device *oct)
 105 {
 106         int i;
 107
 108         /* Disable the input and output queues now. No more packets will
 109          * arrive from Octeon, but we should wait for all packet processing
 110          * to finish.
 111          */
 112
 113         /* To allow for in-flight requests */
 114         schedule_timeout_uninterruptible(100);
 115
 116         if (wait_for_pending_requests(oct))
 117                 dev_err(&oct->pci_dev->dev, "There were pending requests\n");
 118
 119         /* Force all requests waiting to be fetched by OCTEON to complete. */
 120         for (i = 0; i < MAX_OCTEON_INSTR_QUEUES(oct); i++) {
 121                 struct octeon_instr_queue *iq;
 122
 123                 if (!(oct->io_qmask.iq & BIT_ULL(i)))
 124                         continue;
 125                 iq = oct->instr_queue[i];
 126
 127                 if (atomic_read(&iq->instr_pending)) {
 128                         spin_lock_bh(&iq->lock);
 129                         iq->fill_cnt = 0;
 130                         iq->octeon_read_index = iq->host_write_index;
 131                         iq->stats.instr_processed +=
 132                             atomic_read(&iq->instr_pending);
 133                         lio_process_iq_request_list(oct, iq, 0);
 134                         spin_unlock_bh(&iq->lock);
 135                 }
 136         }
 137
 138         /* Force all pending ordered list requests to time out. */
 139         lio_process_ordered_list(oct, 1);
 140
 141         /* We do not need to wait for output queue packets to be processed. */
 142 }
 143
 144 /**
 145  * cleanup_aer_uncorrect_error_status - Cleanup PCI AER uncorrectable error status
 146  * @dev: Pointer to PCI device
 147  */
 148 static void cleanup_aer_uncorrect_error_status(struct pci_dev *dev)
 149 {
 150         u32 status, mask;
 151         int pos = 0x100;
 152
 153         pr_info("%s :\n", __func__);
 154
 155         pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, &status);
 156         pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_SEVER, &mask);
 157         if (dev->error_state == pci_channel_io_normal)
 158                 status &= ~mask; /* Clear corresponding nonfatal bits */
 159         else
 160                 status &= mask; /* Clear corresponding fatal bits */
 161         pci_write_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, status);
 162 }
 163
 164 /**
 165  * stop_pci_io - Stop all PCI IO to a given device
 166  * @oct: Pointer to Octeon device
 167  */
 168 static void stop_pci_io(struct octeon_device *oct)
 169 {
 170         struct msix_entry *msix_entries;
 171         int i;
 172
 173         /* No more instructions will be forwarded. */
 174         atomic_set(&oct->status, OCT_DEV_IN_RESET);
 175
 176         for (i = 0; i < oct->ifcount; i++)
 177                 netif_device_detach(oct->props[i].netdev);
 178
 179         /* Disable interrupts  */
 180         oct->fn_list.disable_interrupt(oct, OCTEON_ALL_INTR);
 181
 182         pcierror_quiesce_device(oct);
 183         if (oct->msix_on) {
 184                 msix_entries = (struct msix_entry *)oct->msix_entries;
 185                 for (i = 0; i < oct->num_msix_irqs; i++) {
 186                         /* clear the affinity_cpumask */
 187                         irq_set_affinity_hint(msix_entries[i].vector,
 188                                               NULL);
 189                         free_irq(msix_entries[i].vector,
 190                                  &oct->ioq_vector[i]);
 191                 }
 192                 pci_disable_msix(oct->pci_dev);
 193                 kfree(oct->msix_entries);
 194                 oct->msix_entries = NULL;
 195                 octeon_free_ioq_vector(oct);
 196         }
 197         dev_dbg(&oct->pci_dev->dev, "Device state is now %s\n",
 198                 lio_get_state_string(&oct->status));
 199
 200         /* making it a common function for all OCTEON models */
 201         cleanup_aer_uncorrect_error_status(oct->pci_dev);
 202
 203         pci_disable_device(oct->pci_dev);
 204 }
 205
 206 /**
 207  * liquidio_pcie_error_detected - called when PCI error is detected
 208  * @pdev: Pointer to PCI device
 209  * @state: The current pci connection state
 210  *
 211  * This function is called after a PCI bus error affecting
 212  * this device has been detected.
 213  */
 214 static pci_ers_result_t liquidio_pcie_error_detected(struct pci_dev *pdev,
 215                                                      pci_channel_state_t state)
 216 {
 217         struct octeon_device *oct = pci_get_drvdata(pdev);
 218
 219         /* Non-correctable Non-fatal errors */
 220         if (state == pci_channel_io_normal) {
 221                 dev_err(&oct->pci_dev->dev, "Non-correctable non-fatal error reported:\n");
 222                 cleanup_aer_uncorrect_error_status(oct->pci_dev);
 223                 return PCI_ERS_RESULT_CAN_RECOVER;
 224         }
 225
 226         /* Non-correctable Fatal errors */
 227         dev_err(&oct->pci_dev->dev, "Non-correctable FATAL reported by PCI AER driver\n");
 228         stop_pci_io(oct);
 229
 230         return PCI_ERS_RESULT_DISCONNECT;
 231 }
 232
 233 /* For PCI-E Advanced Error Recovery (AER) Interface */
 234 static const struct pci_error_handlers liquidio_vf_err_handler = {
 235         .error_detected = liquidio_pcie_error_detected,
 236 };
 237
 238 static const struct pci_device_id liquidio_vf_pci_tbl[] = {
 239         {
 240                 PCI_VENDOR_ID_CAVIUM, OCTEON_CN23XX_VF_VID,
 241                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0
 242         },
 243         {
 244                 0, 0, 0, 0, 0, 0, 0
 245         }
 246 };
 247 MODULE_DEVICE_TABLE(pci, liquidio_vf_pci_tbl);
 248
 249 static struct pci_driver liquidio_vf_pci_driver = {
 250         .name           = "LiquidIO_VF",
 251         .id_table       = liquidio_vf_pci_tbl,
 252         .probe          = liquidio_vf_probe,
 253         .remove         = liquidio_vf_remove,
 254         .err_handler    = &liquidio_vf_err_handler,    /* For AER */
 255 };
 256
 257 /**
 258  * print_link_info - Print link information
 259  * @netdev: network device
 260  */
 261 static void print_link_info(struct net_device *netdev)
 262 {
 263         struct lio *lio = GET_LIO(netdev);
 264
 265         if (!ifstate_check(lio, LIO_IFSTATE_RESETTING) &&
 266             ifstate_check(lio, LIO_IFSTATE_REGISTERED)) {
 267                 struct oct_link_info *linfo = &lio->linfo;
 268
 269                 if (linfo->link.s.link_up) {
 270                         netif_info(lio, link, lio->netdev, "%d Mbps %s Duplex UP\n",
 271                                    linfo->link.s.speed,
 272                                    (linfo->link.s.duplex) ? "Full" : "Half");
 273                 } else {
 274                         netif_info(lio, link, lio->netdev, "Link Down\n");
 275                 }
 276         }
 277 }
 278
 279 /**
 280  * octnet_link_status_change - Routine to notify MTU change
 281  * @work: work_struct data structure
 282  */
 283 static void octnet_link_status_change(struct work_struct *work)
 284 {
 285         struct cavium_wk *wk = (struct cavium_wk *)work;
 286         struct lio *lio = (struct lio *)wk->ctxptr;
 287
 288         /* lio->linfo.link.s.mtu always contains max MTU of the lio interface.
 289          * this API is invoked only when new max-MTU of the interface is
 290          * less than current MTU.
 291          */
 292         rtnl_lock();
 293         dev_set_mtu(lio->netdev, lio->linfo.link.s.mtu);
 294         rtnl_unlock();
 295 }
 296
 297 /**
 298  * setup_link_status_change_wq - Sets up the mtu status change work
 299  * @netdev: network device
 300  */
 301 static int setup_link_status_change_wq(struct net_device *netdev)
 302 {
 303         struct lio *lio = GET_LIO(netdev);
 304         struct octeon_device *oct = lio->oct_dev;
 305
 306         lio->link_status_wq.wq = alloc_workqueue("link-status",
 307                                                  WQ_MEM_RECLAIM, 0);
 308         if (!lio->link_status_wq.wq) {
 309                 dev_err(&oct->pci_dev->dev, "unable to create cavium link status wq\n");
 310                 return -1;
 311         }
 312         INIT_DELAYED_WORK(&lio->link_status_wq.wk.work,
 313                           octnet_link_status_change);
 314         lio->link_status_wq.wk.ctxptr = lio;
 315
 316         return 0;
 317 }
 318
 319 static void cleanup_link_status_change_wq(struct net_device *netdev)
 320 {
 321         struct lio *lio = GET_LIO(netdev);
 322
 323         if (lio->link_status_wq.wq) {
 324                 cancel_delayed_work_sync(&lio->link_status_wq.wk.work);
 325                 destroy_workqueue(lio->link_status_wq.wq);
 326         }
 327 }
 328
 329 /**
 330  * update_link_status - Update link status
 331  * @netdev: network device
 332  * @ls: link status structure
 333  *
 334  * Called on receipt of a link status response from the core application to
 335  * update each interface's link status.
 336  */
 337 static void update_link_status(struct net_device *netdev,
 338                                union oct_link_status *ls)
 339 {
 340         struct lio *lio = GET_LIO(netdev);
 341         int current_max_mtu = lio->linfo.link.s.mtu;
 342         struct octeon_device *oct = lio->oct_dev;
 343
 344         if ((lio->intf_open) && (lio->linfo.link.u64 != ls->u64)) {
 345                 lio->linfo.link.u64 = ls->u64;
 346
 347                 print_link_info(netdev);
 348                 lio->link_changes++;
 349
 350                 if (lio->linfo.link.s.link_up) {
 351                         netif_carrier_on(netdev);
 352                         wake_txqs(netdev);
 353                 } else {
 354                         netif_carrier_off(netdev);
 355                         stop_txqs(netdev);
 356                 }
 357
 358                 if (lio->linfo.link.s.mtu != current_max_mtu) {
 359                         dev_info(&oct->pci_dev->dev,
 360                                  "Max MTU Changed from %d to %d\n",
 361                                  current_max_mtu, lio->linfo.link.s.mtu);
 362                         netdev->max_mtu = lio->linfo.link.s.mtu;
 363                 }
 364
 365                 if (lio->linfo.link.s.mtu < netdev->mtu) {
 366                         dev_warn(&oct->pci_dev->dev,
 367                                  "Current MTU is higher than new max MTU; Reducing the current mtu from %d to %d\n",
 368                                  netdev->mtu, lio->linfo.link.s.mtu);
 369                         queue_delayed_work(lio->link_status_wq.wq,
 370                                            &lio->link_status_wq.wk.work, 0);
 371                 }
 372         }
 373 }
 374
 375 /**
 376  * liquidio_vf_probe - PCI probe handler
 377  * @pdev: PCI device structure
 378  * @ent: unused
 379  */
 380 static int
 381 liquidio_vf_probe(struct pci_dev *pdev,
 382                   const struct pci_device_id __maybe_unused *ent)
 383 {
 384         struct octeon_device *oct_dev = NULL;
 385
 386         oct_dev = octeon_allocate_device(pdev->device,
 387                                          sizeof(struct octeon_device_priv));
 388
 389         if (!oct_dev) {
 390                 dev_err(&pdev->dev, "Unable to allocate device\n");
 391                 return -ENOMEM;
 392         }
 393         oct_dev->msix_on = LIO_FLAG_MSIX_ENABLED;
 394
 395         dev_info(&pdev->dev, "Initializing device %x:%x.\n",
 396                  (u32)pdev->vendor, (u32)pdev->device);
 397
 398         /* Assign octeon_device for this device to the private data area. */
 399         pci_set_drvdata(pdev, oct_dev);
 400
 401         /* set linux specific device pointer */
 402         oct_dev->pci_dev = pdev;
 403
 404         oct_dev->subsystem_id = pdev->subsystem_vendor |
 405                 (pdev->subsystem_device << 16);
 406
 407         if (octeon_device_init(oct_dev)) {
 408                 liquidio_vf_remove(pdev);
 409                 return -ENOMEM;
 410         }
 411
 412         dev_dbg(&oct_dev->pci_dev->dev, "Device is ready\n");
 413
 414         return 0;
 415 }
 416
 417 /**
 418  * octeon_pci_flr - PCI FLR for each Octeon device.
 419  * @oct: octeon device
 420  */
 421 static void octeon_pci_flr(struct octeon_device *oct)
 422 {
 423         pci_save_state(oct->pci_dev);
 424
 425         pci_cfg_access_lock(oct->pci_dev);
 426
 427         /* Quiesce the device completely */
 428         pci_write_config_word(oct->pci_dev, PCI_COMMAND,
 429                               PCI_COMMAND_INTX_DISABLE);
 430
 431         pcie_flr(oct->pci_dev);
 432
 433         pci_cfg_access_unlock(oct->pci_dev);
 434
 435         pci_restore_state(oct->pci_dev);
 436 }
 437
 438 /**
 439  * octeon_destroy_resources - Destroy resources associated with octeon device
 440  * @oct: octeon device
 441  */
 442 static void octeon_destroy_resources(struct octeon_device *oct)
 443 {
 444         struct octeon_device_priv *oct_priv = oct->priv;
 445         struct msix_entry *msix_entries;
 446         int i;
 447
 448         switch (atomic_read(&oct->status)) {
 449         case OCT_DEV_RUNNING:
 450         case OCT_DEV_CORE_OK:
 451                 /* No more instructions will be forwarded. */
 452                 atomic_set(&oct->status, OCT_DEV_IN_RESET);
 453
 454                 oct->app_mode = CVM_DRV_INVALID_APP;
 455                 dev_dbg(&oct->pci_dev->dev, "Device state is now %s\n",
 456                         lio_get_state_string(&oct->status));
 457
 458                 schedule_timeout_uninterruptible(HZ / 10);
 459
 460                 fallthrough;
 461         case OCT_DEV_HOST_OK:
 462         case OCT_DEV_IO_QUEUES_DONE:
 463                 if (lio_wait_for_instr_fetch(oct))
 464                         dev_err(&oct->pci_dev->dev, "IQ had pending instructions\n");
 465
 466                 if (wait_for_pending_requests(oct))
 467                         dev_err(&oct->pci_dev->dev, "There were pending requests\n");
 468
 469                 /* Disable the input and output queues now. No more packets will
 470                  * arrive from Octeon, but we should wait for all packet
 471                  * processing to finish.
 472                  */
 473                 oct->fn_list.disable_io_queues(oct);
 474
 475                 if (lio_wait_for_oq_pkts(oct))
 476                         dev_err(&oct->pci_dev->dev, "OQ had pending packets\n");
 477
 478                 /* Force all requests waiting to be fetched by OCTEON to
 479                  * complete.
 480                  */
 481                 for (i = 0; i < MAX_OCTEON_INSTR_QUEUES(oct); i++) {
 482                         struct octeon_instr_queue *iq;
 483
 484                         if (!(oct->io_qmask.iq & BIT_ULL(i)))
 485                                 continue;
 486                         iq = oct->instr_queue[i];
 487
 488                         if (atomic_read(&iq->instr_pending)) {
 489                                 spin_lock_bh(&iq->lock);
 490                                 iq->fill_cnt = 0;
 491                                 iq->octeon_read_index = iq->host_write_index;
 492                                 iq->stats.instr_processed +=
 493                                         atomic_read(&iq->instr_pending);
 494                                 lio_process_iq_request_list(oct, iq, 0);
 495                                 spin_unlock_bh(&iq->lock);
 496                         }
 497                 }
 498
 499                 lio_process_ordered_list(oct, 1);
 500                 octeon_free_sc_done_list(oct);
 501                 octeon_free_sc_zombie_list(oct);
 502
 503                 fallthrough;
 504         case OCT_DEV_INTR_SET_DONE:
 505                 /* Disable interrupts  */
 506                 oct->fn_list.disable_interrupt(oct, OCTEON_ALL_INTR);
 507
 508                 if (oct->msix_on) {
 509                         msix_entries = (struct msix_entry *)oct->msix_entries;
 510                         for (i = 0; i < oct->num_msix_irqs; i++) {
 511                                 if (oct->ioq_vector[i].vector) {
 512                                         irq_set_affinity_hint(
 513                                                         msix_entries[i].vector,
 514                                                         NULL);
 515                                         free_irq(msix_entries[i].vector,
 516                                                  &oct->ioq_vector[i]);
 517                                         oct->ioq_vector[i].vector = 0;
 518                                 }
 519                         }
 520                         pci_disable_msix(oct->pci_dev);
 521                         kfree(oct->msix_entries);
 522                         oct->msix_entries = NULL;
 523                         kfree(oct->irq_name_storage);
 524                         oct->irq_name_storage = NULL;
 525                 }
 526                 /* Soft reset the octeon device before exiting */
 527                 if (!pcie_reset_flr(oct->pci_dev, PCI_RESET_PROBE))
 528                         octeon_pci_flr(oct);
 529                 else
 530                         cn23xx_vf_ask_pf_to_do_flr(oct);
 531
 532                 fallthrough;
 533         case OCT_DEV_MSIX_ALLOC_VECTOR_DONE:
 534                 octeon_free_ioq_vector(oct);
 535
 536                 fallthrough;
 537         case OCT_DEV_MBOX_SETUP_DONE:
 538                 oct->fn_list.free_mbox(oct);
 539
 540                 fallthrough;
 541         case OCT_DEV_IN_RESET:
 542         case OCT_DEV_DROQ_INIT_DONE:
 543                 mdelay(100);
 544                 for (i = 0; i < MAX_OCTEON_OUTPUT_QUEUES(oct); i++) {
 545                         if (!(oct->io_qmask.oq & BIT_ULL(i)))
 546                                 continue;
 547                         octeon_delete_droq(oct, i);
 548                 }
 549
 550                 fallthrough;
 551         case OCT_DEV_RESP_LIST_INIT_DONE:
 552                 octeon_delete_response_list(oct);
 553
 554                 fallthrough;
 555         case OCT_DEV_INSTR_QUEUE_INIT_DONE:
 556                 for (i = 0; i < MAX_OCTEON_INSTR_QUEUES(oct); i++) {
 557                         if (!(oct->io_qmask.iq & BIT_ULL(i)))
 558                                 continue;
 559                         octeon_delete_instr_queue(oct, i);
 560                 }
 561
 562                 fallthrough;
 563         case OCT_DEV_SC_BUFF_POOL_INIT_DONE:
 564                 octeon_free_sc_buffer_pool(oct);
 565
 566                 fallthrough;
 567         case OCT_DEV_DISPATCH_INIT_DONE:
 568                 octeon_delete_dispatch_list(oct);
 569                 cancel_delayed_work_sync(&oct->nic_poll_work.work);
 570
 571                 fallthrough;
 572         case OCT_DEV_PCI_MAP_DONE:
 573                 octeon_unmap_pci_barx(oct, 0);
 574                 octeon_unmap_pci_barx(oct, 1);
 575
 576                 fallthrough;
 577         case OCT_DEV_PCI_ENABLE_DONE:
 578                 /* Disable the device, releasing the PCI INT */
 579                 pci_disable_device(oct->pci_dev);
 580
 581                 fallthrough;
 582         case OCT_DEV_BEGIN_STATE:
 583                 /* Nothing to be done here either */
 584                 break;
 585         }
 586
 587         tasklet_kill(&oct_priv->droq_tasklet);
 588 }
 589
 590 /**
 591  * send_rx_ctrl_cmd - Send Rx control command
 592  * @lio: per-network private data
 593  * @start_stop: whether to start or stop
 594  */
 595 static int send_rx_ctrl_cmd(struct lio *lio, int start_stop)
 596 {
 597         struct octeon_device *oct = (struct octeon_device *)lio->oct_dev;
 598         struct octeon_soft_command *sc;
 599         union octnet_cmd *ncmd;
 600         int retval;
 601
 602         if (oct->props[lio->ifidx].rx_on == start_stop)
 603                 return 0;
 604
 605         sc = (struct octeon_soft_command *)
 606                 octeon_alloc_soft_command(oct, OCTNET_CMD_SIZE,
 607                                           16, 0);
 608         if (!sc) {
 609                 netif_info(lio, rx_err, lio->netdev,
 610                            "Failed to allocate octeon_soft_command struct\n");
 611                 return -ENOMEM;
 612         }
 613
 614         ncmd = (union octnet_cmd *)sc->virtdptr;
 615
 616         ncmd->u64 = 0;
 617         ncmd->s.cmd = OCTNET_CMD_RX_CTL;
 618         ncmd->s.param1 = start_stop;
 619
 620         octeon_swap_8B_data((u64 *)ncmd, (OCTNET_CMD_SIZE >> 3));
 621
 622         sc->iq_no = lio->linfo.txpciq[0].s.q_no;
 623
 624         octeon_prepare_soft_command(oct, sc, OPCODE_NIC,
 625                                     OPCODE_NIC_CMD, 0, 0, 0);
 626
 627         init_completion(&sc->complete);
 628         sc->sc_status = OCTEON_REQUEST_PENDING;
 629
 630         retval = octeon_send_soft_command(oct, sc);
 631         if (retval == IQ_SEND_FAILED) {
 632                 netif_info(lio, rx_err, lio->netdev, "Failed to send RX Control message\n");
 633                 octeon_free_soft_command(oct, sc);
 634         } else {
 635                 /* Sleep on a wait queue till the cond flag indicates that the
 636                  * response arrived or timed-out.
 637                  */
 638                 retval = wait_for_sc_completion_timeout(oct, sc, 0);
 639                 if (retval)
 640                         return retval;
 641
 642                 oct->props[lio->ifidx].rx_on = start_stop;
 643                 WRITE_ONCE(sc->caller_is_done, true);
 644         }
 645
 646         return retval;
 647 }
 648
 649 /**
 650  * liquidio_destroy_nic_device - Destroy NIC device interface
 651  * @oct: octeon device
 652  * @ifidx: which interface to destroy
 653  *
 654  * Cleanup associated with each interface for an Octeon device  when NIC
 655  * module is being unloaded or if initialization fails during load.
 656  */
 657 static void liquidio_destroy_nic_device(struct octeon_device *oct, int ifidx)
 658 {
 659         struct net_device *netdev = oct->props[ifidx].netdev;
 660         struct octeon_device_priv *oct_priv = oct->priv;
 661         struct napi_struct *napi, *n;
 662         struct lio *lio;
 663
 664         if (!netdev) {
 665                 dev_err(&oct->pci_dev->dev, "%s No netdevice ptr for index %d\n",
 666                         __func__, ifidx);
 667                 return;
 668         }
 669
 670         lio = GET_LIO(netdev);
 671
 672         dev_dbg(&oct->pci_dev->dev, "NIC device cleanup\n");
 673
 674         if (atomic_read(&lio->ifstate) & LIO_IFSTATE_RUNNING)
 675                 liquidio_stop(netdev);
 676
 677         if (oct->props[lio->ifidx].napi_enabled == 1) {
 678                 list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list)
 679                         napi_disable(napi);
 680
 681                 oct->props[lio->ifidx].napi_enabled = 0;
 682
 683                 oct->droq[0]->ops.poll_mode = 0;
 684         }
 685
 686         /* Delete NAPI */
 687         list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list)
 688                 netif_napi_del(napi);
 689
 690         tasklet_enable(&oct_priv->droq_tasklet);
 691
 692         if (atomic_read(&lio->ifstate) & LIO_IFSTATE_REGISTERED)
 693                 unregister_netdev(netdev);
 694
 695         cleanup_rx_oom_poll_fn(netdev);
 696
 697         cleanup_link_status_change_wq(netdev);
 698
 699         lio_delete_glists(lio);
 700
 701         free_netdev(netdev);
 702
 703         oct->props[ifidx].gmxport = -1;
 704
 705         oct->props[ifidx].netdev = NULL;
 706 }
 707
 708 /**
 709  * liquidio_stop_nic_module - Stop complete NIC functionality
 710  * @oct: octeon device
 711  */
 712 static int liquidio_stop_nic_module(struct octeon_device *oct)
 713 {
 714         struct lio *lio;
 715         int i, j;
 716
 717         dev_dbg(&oct->pci_dev->dev, "Stopping network interfaces\n");
 718         if (!oct->ifcount) {
 719                 dev_err(&oct->pci_dev->dev, "Init for Octeon was not completed\n");
 720                 return 1;
 721         }
 722
 723         spin_lock_bh(&oct->cmd_resp_wqlock);
 724         oct->cmd_resp_state = OCT_DRV_OFFLINE;
 725         spin_unlock_bh(&oct->cmd_resp_wqlock);
 726
 727         for (i = 0; i < oct->ifcount; i++) {
 728                 lio = GET_LIO(oct->props[i].netdev);
 729                 for (j = 0; j < oct->num_oqs; j++)
 730                         octeon_unregister_droq_ops(oct,
 731                                                    lio->linfo.rxpciq[j].s.q_no);
 732         }
 733
 734         for (i = 0; i < oct->ifcount; i++)
 735                 liquidio_destroy_nic_device(oct, i);
 736
 737         dev_dbg(&oct->pci_dev->dev, "Network interfaces stopped\n");
 738         return 0;
 739 }
 740
 741 /**
 742  * liquidio_vf_remove - Cleans up resources at unload time
 743  * @pdev: PCI device structure
 744  */
 745 static void liquidio_vf_remove(struct pci_dev *pdev)
 746 {
 747         struct octeon_device *oct_dev = pci_get_drvdata(pdev);
 748
 749         dev_dbg(&oct_dev->pci_dev->dev, "Stopping device\n");
 750
 751         if (oct_dev->app_mode == CVM_DRV_NIC_APP)
 752                 liquidio_stop_nic_module(oct_dev);
 753
 754         /* Reset the octeon device and cleanup all memory allocated for
 755          * the octeon device by driver.
 756          */
 757         octeon_destroy_resources(oct_dev);
 758
 759         dev_info(&oct_dev->pci_dev->dev, "Device removed\n");
 760
 761         /* This octeon device has been removed. Update the global
 762          * data structure to reflect this. Free the device structure.
 763          */
 764         octeon_free_device_mem(oct_dev);
 765 }
 766
 767 /**
 768  * octeon_pci_os_setup - PCI initialization for each Octeon device.
 769  * @oct: octeon device
 770  */
 771 static int octeon_pci_os_setup(struct octeon_device *oct)
 772 {
 773 #ifdef CONFIG_PCI_IOV
 774         /* setup PCI stuff first */
 775         if (!oct->pci_dev->physfn)
 776                 octeon_pci_flr(oct);
 777 #endif
 778
 779         if (pci_enable_device(oct->pci_dev)) {
 780                 dev_err(&oct->pci_dev->dev, "pci_enable_device failed\n");
 781                 return 1;
 782         }
 783
 784         if (dma_set_mask_and_coherent(&oct->pci_dev->dev, DMA_BIT_MASK(64))) {
 785                 dev_err(&oct->pci_dev->dev, "Unexpected DMA device capability\n");
 786                 pci_disable_device(oct->pci_dev);
 787                 return 1;
 788         }
 789
 790         /* Enable PCI DMA Master. */
 791         pci_set_master(oct->pci_dev);
 792
 793         return 0;
 794 }
 795
 796 /**
 797  * free_netbuf - Unmap and free network buffer
 798  * @buf: buffer
 799  */
 800 static void free_netbuf(void *buf)
 801 {
 802         struct octnet_buf_free_info *finfo;
 803         struct sk_buff *skb;
 804         struct lio *lio;
 805
 806         finfo = (struct octnet_buf_free_info *)buf;
 807         skb = finfo->skb;
 808         lio = finfo->lio;
 809
 810         dma_unmap_single(&lio->oct_dev->pci_dev->dev, finfo->dptr, skb->len,
 811                          DMA_TO_DEVICE);
 812
 813         tx_buffer_free(skb);
 814 }
 815
 816 /**
 817  * free_netsgbuf - Unmap and free gather buffer
 818  * @buf: buffer
 819  */
 820 static void free_netsgbuf(void *buf)
 821 {
 822         struct octnet_buf_free_info *finfo;
 823         struct octnic_gather *g;
 824         struct sk_buff *skb;
 825         int i, frags, iq;
 826         struct lio *lio;
 827
 828         finfo = (struct octnet_buf_free_info *)buf;
 829         skb = finfo->skb;
 830         lio = finfo->lio;
 831         g = finfo->g;
 832         frags = skb_shinfo(skb)->nr_frags;
 833
 834         dma_unmap_single(&lio->oct_dev->pci_dev->dev,
 835                          g->sg[0].ptr[0], (skb->len - skb->data_len),
 836                          DMA_TO_DEVICE);
 837
 838         i = 1;
 839         while (frags--) {
 840                 skb_frag_t *frag = &skb_shinfo(skb)->frags[i - 1];
 841
 842                 dma_unmap_page(&lio->oct_dev->pci_dev->dev,
 843                                g->sg[(i >> 2)].ptr[(i & 3)],
 844                                skb_frag_size(frag), DMA_TO_DEVICE);
 845                 i++;
 846         }
 847
 848         iq = skb_iq(lio->oct_dev, skb);
 849
 850         spin_lock(&lio->glist_lock[iq]);
 851         list_add_tail(&g->list, &lio->glist[iq]);
 852         spin_unlock(&lio->glist_lock[iq]);
 853
 854         tx_buffer_free(skb);
 855 }
 856
 857 /**
 858  * free_netsgbuf_with_resp - Unmap and free gather buffer with response
 859  * @buf: buffer
 860  */
 861 static void free_netsgbuf_with_resp(void *buf)
 862 {
 863         struct octnet_buf_free_info *finfo;
 864         struct octeon_soft_command *sc;
 865         struct octnic_gather *g;
 866         struct sk_buff *skb;
 867         int i, frags, iq;
 868         struct lio *lio;
 869
 870         sc = (struct octeon_soft_command *)buf;
 871         skb = (struct sk_buff *)sc->callback_arg;
 872         finfo = (struct octnet_buf_free_info *)&skb->cb;
 873
 874         lio = finfo->lio;
 875         g = finfo->g;
 876         frags = skb_shinfo(skb)->nr_frags;
 877
 878         dma_unmap_single(&lio->oct_dev->pci_dev->dev,
 879                          g->sg[0].ptr[0], (skb->len - skb->data_len),
 880                          DMA_TO_DEVICE);
 881
 882         i = 1;
 883         while (frags--) {
 884                 skb_frag_t *frag = &skb_shinfo(skb)->frags[i - 1];
 885
 886                 dma_unmap_page(&lio->oct_dev->pci_dev->dev,
 887                                g->sg[(i >> 2)].ptr[(i & 3)],
 888                                skb_frag_size(frag), DMA_TO_DEVICE);
 889                 i++;
 890         }
 891
 892         iq = skb_iq(lio->oct_dev, skb);
 893
 894         spin_lock(&lio->glist_lock[iq]);
 895         list_add_tail(&g->list, &lio->glist[iq]);
 896         spin_unlock(&lio->glist_lock[iq]);
 897
 898         /* Don't free the skb yet */
 899 }
 900
 901 /**
 902  * liquidio_open - Net device open for LiquidIO
 903  * @netdev: network device
 904  */
 905 static int liquidio_open(struct net_device *netdev)
 906 {
 907         struct lio *lio = GET_LIO(netdev);
 908         struct octeon_device *oct = lio->oct_dev;
 909         struct octeon_device_priv *oct_priv = oct->priv;
 910         struct napi_struct *napi, *n;
 911         int ret = 0;
 912
 913         if (!oct->props[lio->ifidx].napi_enabled) {
 914                 tasklet_disable(&oct_priv->droq_tasklet);
 915
 916                 list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list)
 917                         napi_enable(napi);
 918
 919                 oct->props[lio->ifidx].napi_enabled = 1;
 920
 921                 oct->droq[0]->ops.poll_mode = 1;
 922         }
 923
 924         ifstate_set(lio, LIO_IFSTATE_RUNNING);
 925
 926         /* Ready for link status updates */
 927         lio->intf_open = 1;
 928
 929         netif_info(lio, ifup, lio->netdev, "Interface Open, ready for traffic\n");
 930         start_txqs(netdev);
 931
 932         INIT_DELAYED_WORK(&lio->stats_wk.work, lio_fetch_stats);
 933         lio->stats_wk.ctxptr = lio;
 934         schedule_delayed_work(&lio->stats_wk.work, msecs_to_jiffies
 935                                         (LIQUIDIO_NDEV_STATS_POLL_TIME_MS));
 936
 937         /* tell Octeon to start forwarding packets to host */
 938         ret = send_rx_ctrl_cmd(lio, 1);
 939         if (ret)
 940                 return ret;
 941
 942         dev_info(&oct->pci_dev->dev, "%s interface is opened\n", netdev->name);
 943
 944         return ret;
 945 }
 946
 947 /**
 948  * liquidio_stop - jNet device stop for LiquidIO
 949  * @netdev: network device
 950  */
 951 static int liquidio_stop(struct net_device *netdev)
 952 {
 953         struct lio *lio = GET_LIO(netdev);
 954         struct octeon_device *oct = lio->oct_dev;
 955         struct octeon_device_priv *oct_priv = oct->priv;
 956         struct napi_struct *napi, *n;
 957         int ret = 0;
 958
 959         /* tell Octeon to stop forwarding packets to host */
 960         ret = send_rx_ctrl_cmd(lio, 0);
 961         if (ret)
 962                 return ret;
 963
 964         netif_info(lio, ifdown, lio->netdev, "Stopping interface!\n");
 965         /* Inform that netif carrier is down */
 966         lio->intf_open = 0;
 967         lio->linfo.link.s.link_up = 0;
 968
 969         netif_carrier_off(netdev);
 970         lio->link_changes++;
 971
 972         ifstate_reset(lio, LIO_IFSTATE_RUNNING);
 973
 974         stop_txqs(netdev);
 975
 976         /* Wait for any pending Rx descriptors */
 977         if (lio_wait_for_clean_oq(oct))
 978                 netif_info(lio, rx_err, lio->netdev,
 979                            "Proceeding with stop interface after partial RX desc processing\n");
 980
 981         if (oct->props[lio->ifidx].napi_enabled == 1) {
 982                 list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list)
 983                         napi_disable(napi);
 984
 985                 oct->props[lio->ifidx].napi_enabled = 0;
 986
 987                 oct->droq[0]->ops.poll_mode = 0;
 988
 989                 tasklet_enable(&oct_priv->droq_tasklet);
 990         }
 991
 992         cancel_delayed_work_sync(&lio->stats_wk.work);
 993
 994         dev_info(&oct->pci_dev->dev, "%s interface is stopped\n", netdev->name);
 995
 996         return ret;
 997 }
 998
 999 /**
1000  * get_new_flags - Converts a mask based on net device flags
1001  * @netdev: network device
1002  *
1003  * This routine generates a octnet_ifflags mask from the net device flags
1004  * received from the OS.
1005  */
1006 static enum octnet_ifflags get_new_flags(struct net_device *netdev)
1007 {
1008         enum octnet_ifflags f = OCTNET_IFFLAG_UNICAST;
1009
1010         if (netdev->flags & IFF_PROMISC)
1011                 f |= OCTNET_IFFLAG_PROMISC;
1012
1013         if (netdev->flags & IFF_ALLMULTI)
1014                 f |= OCTNET_IFFLAG_ALLMULTI;
1015
1016         if (netdev->flags & IFF_MULTICAST) {
1017                 f |= OCTNET_IFFLAG_MULTICAST;
1018
1019                 /* Accept all multicast addresses if there are more than we
1020                  * can handle
1021                  */
1022                 if (netdev_mc_count(netdev) > MAX_OCTEON_MULTICAST_ADDR)
1023                         f |= OCTNET_IFFLAG_ALLMULTI;
1024         }
1025
1026         if (netdev->flags & IFF_BROADCAST)
1027                 f |= OCTNET_IFFLAG_BROADCAST;
1028
1029         return f;
1030 }
1031
1032 static void liquidio_set_uc_list(struct net_device *netdev)
1033 {
1034         struct lio *lio = GET_LIO(netdev);
1035         struct octeon_device *oct = lio->oct_dev;
1036         struct octnic_ctrl_pkt nctrl;
1037         struct netdev_hw_addr *ha;
1038         u64 *mac;
1039
1040         if (lio->netdev_uc_count == netdev_uc_count(netdev))
1041                 return;
1042
1043         if (netdev_uc_count(netdev) > MAX_NCTRL_UDD) {
1044                 dev_err(&oct->pci_dev->dev, "too many MAC addresses in netdev uc list\n");
1045                 return;
1046         }
1047
1048         lio->netdev_uc_count = netdev_uc_count(netdev);
1049
1050         memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
1051         nctrl.ncmd.s.cmd = OCTNET_CMD_SET_UC_LIST;
1052         nctrl.ncmd.s.more = lio->netdev_uc_count;
1053         nctrl.ncmd.s.param1 = oct->vf_num;
1054         nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
1055         nctrl.netpndev = (u64)netdev;
1056         nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
1057
1058         /* copy all the addresses into the udd */
1059         mac = &nctrl.udd[0];
1060         netdev_for_each_uc_addr(ha, netdev) {
1061                 ether_addr_copy(((u8 *)mac) + 2, ha->addr);
1062                 mac++;
1063         }
1064
1065         octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
1066 }
1067
1068 /**
1069  * liquidio_set_mcast_list - Net device set_multicast_list
1070  * @netdev: network device
1071  */
1072 static void liquidio_set_mcast_list(struct net_device *netdev)
1073 {
1074         int mc_count = min(netdev_mc_count(netdev), MAX_OCTEON_MULTICAST_ADDR);
1075         struct lio *lio = GET_LIO(netdev);
1076         struct octeon_device *oct = lio->oct_dev;
1077         struct octnic_ctrl_pkt nctrl;
1078         struct netdev_hw_addr *ha;
1079         u64 *mc;
1080         int ret;
1081
1082         memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
1083
1084         /* Create a ctrl pkt command to be sent to core app. */
1085         nctrl.ncmd.u64 = 0;
1086         nctrl.ncmd.s.cmd = OCTNET_CMD_SET_MULTI_LIST;
1087         nctrl.ncmd.s.param1 = get_new_flags(netdev);
1088         nctrl.ncmd.s.param2 = mc_count;
1089         nctrl.ncmd.s.more = mc_count;
1090         nctrl.netpndev = (u64)netdev;
1091         nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
1092
1093         /* copy all the addresses into the udd */
1094         mc = &nctrl.udd[0];
1095         netdev_for_each_mc_addr(ha, netdev) {
1096                 *mc = 0;
1097                 ether_addr_copy(((u8 *)mc) + 2, ha->addr);
1098                 /* no need to swap bytes */
1099                 if (++mc > &nctrl.udd[mc_count])
1100                         break;
1101         }
1102
1103         nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
1104
1105         /* Apparently, any activity in this call from the kernel has to
1106          * be atomic. So we won't wait for response.
1107          */
1108
1109         ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
1110         if (ret) {
1111                 dev_err(&oct->pci_dev->dev, "DEVFLAGS change failed in core (ret: 0x%x)\n",
1112                         ret);
1113         }
1114
1115         liquidio_set_uc_list(netdev);
1116 }
1117
1118 /**
1119  * liquidio_set_mac - Net device set_mac_address
1120  * @netdev: network device
1121  * @p: opaque pointer to sockaddr
1122  */
1123 static int liquidio_set_mac(struct net_device *netdev, void *p)
1124 {
1125         struct sockaddr *addr = (struct sockaddr *)p;
1126         struct lio *lio = GET_LIO(netdev);
1127         struct octeon_device *oct = lio->oct_dev;
1128         struct octnic_ctrl_pkt nctrl;
1129         int ret = 0;
1130
1131         if (!is_valid_ether_addr(addr->sa_data))
1132                 return -EADDRNOTAVAIL;
1133
1134         if (ether_addr_equal(addr->sa_data, netdev->dev_addr))
1135                 return 0;
1136
1137         if (lio->linfo.macaddr_is_admin_asgnd)
1138                 return -EPERM;
1139
1140         memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
1141
1142         nctrl.ncmd.u64 = 0;
1143         nctrl.ncmd.s.cmd = OCTNET_CMD_CHANGE_MACADDR;
1144         nctrl.ncmd.s.param1 = 0;
1145         nctrl.ncmd.s.more = 1;
1146         nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
1147         nctrl.netpndev = (u64)netdev;
1148
1149         nctrl.udd[0] = 0;
1150         /* The MAC Address is presented in network byte order. */
1151         ether_addr_copy((u8 *)&nctrl.udd[0] + 2, addr->sa_data);
1152
1153         ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
1154         if (ret < 0) {
1155                 dev_err(&oct->pci_dev->dev, "MAC Address change failed\n");
1156                 return -ENOMEM;
1157         }
1158
1159         if (nctrl.sc_status ==
1160             FIRMWARE_STATUS_CODE(OCTEON_REQUEST_NO_PERMISSION)) {
1161                 dev_err(&oct->pci_dev->dev, "MAC Address change failed: no permission\n");
1162                 return -EPERM;
1163         }
1164
1165         eth_hw_addr_set(netdev, addr->sa_data);
1166         ether_addr_copy(((u8 *)&lio->linfo.hw_addr) + 2, addr->sa_data);
1167
1168         return 0;
1169 }
1170
1171 static void
1172 liquidio_get_stats64(struct net_device *netdev,
1173                      struct rtnl_link_stats64 *lstats)
1174 {
1175         struct lio *lio = GET_LIO(netdev);
1176         struct octeon_device *oct;
1177         u64 pkts = 0, drop = 0, bytes = 0;
1178         struct oct_droq_stats *oq_stats;
1179         struct oct_iq_stats *iq_stats;
1180         int i, iq_no, oq_no;
1181
1182         oct = lio->oct_dev;
1183
1184         if (ifstate_check(lio, LIO_IFSTATE_RESETTING))
1185                 return;
1186
1187         for (i = 0; i < oct->num_iqs; i++) {
1188                 iq_no = lio->linfo.txpciq[i].s.q_no;
1189                 iq_stats = &oct->instr_queue[iq_no]->stats;
1190                 pkts += iq_stats->tx_done;
1191                 drop += iq_stats->tx_dropped;
1192                 bytes += iq_stats->tx_tot_bytes;
1193         }
1194
1195         lstats->tx_packets = pkts;
1196         lstats->tx_bytes = bytes;
1197         lstats->tx_dropped = drop;
1198
1199         pkts = 0;
1200         drop = 0;
1201         bytes = 0;
1202
1203         for (i = 0; i < oct->num_oqs; i++) {
1204                 oq_no = lio->linfo.rxpciq[i].s.q_no;
1205                 oq_stats = &oct->droq[oq_no]->stats;
1206                 pkts += oq_stats->rx_pkts_received;
1207                 drop += (oq_stats->rx_dropped +
1208                          oq_stats->dropped_nodispatch +
1209                          oq_stats->dropped_toomany +
1210                          oq_stats->dropped_nomem);
1211                 bytes += oq_stats->rx_bytes_received;
1212         }
1213
1214         lstats->rx_bytes = bytes;
1215         lstats->rx_packets = pkts;
1216         lstats->rx_dropped = drop;
1217
1218         lstats->multicast = oct->link_stats.fromwire.fw_total_mcast;
1219
1220         /* detailed rx_errors: */
1221         lstats->rx_length_errors = oct->link_stats.fromwire.l2_err;
1222         /* recved pkt with crc error */
1223         lstats->rx_crc_errors = oct->link_stats.fromwire.fcs_err;
1224         /* recv'd frame alignment error */
1225         lstats->rx_frame_errors = oct->link_stats.fromwire.frame_err;
1226
1227         lstats->rx_errors = lstats->rx_length_errors + lstats->rx_crc_errors +
1228                             lstats->rx_frame_errors;
1229
1230         /* detailed tx_errors */
1231         lstats->tx_aborted_errors = oct->link_stats.fromhost.fw_err_pko;
1232         lstats->tx_carrier_errors = oct->link_stats.fromhost.fw_err_link;
1233
1234         lstats->tx_errors = lstats->tx_aborted_errors +
1235                 lstats->tx_carrier_errors;
1236 }
1237
1238 /**
1239  * hwtstamp_ioctl - Handler for SIOCSHWTSTAMP ioctl
1240  * @netdev: network device
1241  * @ifr: interface request
1242  */
1243 static int hwtstamp_ioctl(struct net_device *netdev, struct ifreq *ifr)
1244 {
1245         struct lio *lio = GET_LIO(netdev);
1246         struct hwtstamp_config conf;
1247
1248         if (copy_from_user(&conf, ifr->ifr_data, sizeof(conf)))
1249                 return -EFAULT;
1250
1251         switch (conf.tx_type) {
1252         case HWTSTAMP_TX_ON:
1253         case HWTSTAMP_TX_OFF:
1254                 break;
1255         default:
1256                 return -ERANGE;
1257         }
1258
1259         switch (conf.rx_filter) {
1260         case HWTSTAMP_FILTER_NONE:
1261                 break;
1262         case HWTSTAMP_FILTER_ALL:
1263         case HWTSTAMP_FILTER_SOME:
1264         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
1265         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
1266         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
1267         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
1268         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
1269         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
1270         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
1271         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
1272         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
1273         case HWTSTAMP_FILTER_PTP_V2_EVENT:
1274         case HWTSTAMP_FILTER_PTP_V2_SYNC:
1275         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
1276         case HWTSTAMP_FILTER_NTP_ALL:
1277                 conf.rx_filter = HWTSTAMP_FILTER_ALL;
1278                 break;
1279         default:
1280                 return -ERANGE;
1281         }
1282
1283         if (conf.rx_filter == HWTSTAMP_FILTER_ALL)
1284                 ifstate_set(lio, LIO_IFSTATE_RX_TIMESTAMP_ENABLED);
1285
1286         else
1287                 ifstate_reset(lio, LIO_IFSTATE_RX_TIMESTAMP_ENABLED);
1288
1289         return copy_to_user(ifr->ifr_data, &conf, sizeof(conf)) ? -EFAULT : 0;
1290 }
1291
1292 /**
1293  * liquidio_ioctl - ioctl handler
1294  * @netdev: network device
1295  * @ifr: interface request
1296  * @cmd: command
1297  */
1298 static int liquidio_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1299 {
1300         switch (cmd) {
1301         case SIOCSHWTSTAMP:
1302                 return hwtstamp_ioctl(netdev, ifr);
1303         default:
1304                 return -EOPNOTSUPP;
1305         }
1306 }
1307
1308 static void handle_timestamp(struct octeon_device *oct, u32 status, void *buf)
1309 {
1310         struct sk_buff *skb = (struct sk_buff *)buf;
1311         struct octnet_buf_free_info *finfo;
1312         struct oct_timestamp_resp *resp;
1313         struct octeon_soft_command *sc;
1314         struct lio *lio;
1315
1316         finfo = (struct octnet_buf_free_info *)skb->cb;
1317         lio = finfo->lio;
1318         sc = finfo->sc;
1319         oct = lio->oct_dev;
1320         resp = (struct oct_timestamp_resp *)sc->virtrptr;
1321
1322         if (status != OCTEON_REQUEST_DONE) {
1323                 dev_err(&oct->pci_dev->dev, "Tx timestamp instruction failed. Status: %llx\n",
1324                         CVM_CAST64(status));
1325                 resp->timestamp = 0;
1326         }
1327
1328         octeon_swap_8B_data(&resp->timestamp, 1);
1329
1330         if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS)) {
1331                 struct skb_shared_hwtstamps ts;
1332                 u64 ns = resp->timestamp;
1333
1334                 netif_info(lio, tx_done, lio->netdev,
1335                            "Got resulting SKBTX_HW_TSTAMP skb=%p ns=%016llu\n",
1336                            skb, (unsigned long long)ns);
1337                 ts.hwtstamp = ns_to_ktime(ns + lio->ptp_adjust);
1338                 skb_tstamp_tx(skb, &ts);
1339         }
1340
1341         octeon_free_soft_command(oct, sc);
1342         tx_buffer_free(skb);
1343 }
1344
1345 /* send_nic_timestamp_pkt - Send a data packet that will be timestamped
1346  * @oct: octeon device
1347  * @ndata: pointer to network data
1348  * @finfo: pointer to private network data
1349  */
1350 static int send_nic_timestamp_pkt(struct octeon_device *oct,
1351                                   struct octnic_data_pkt *ndata,
1352                                   struct octnet_buf_free_info *finfo,
1353                                   int xmit_more)
1354 {
1355         struct octeon_soft_command *sc;
1356         int ring_doorbell;
1357         struct lio *lio;
1358         int retval;
1359         u32 len;
1360
1361         lio = finfo->lio;
1362
1363         sc = octeon_alloc_soft_command_resp(oct, &ndata->cmd,
1364                                             sizeof(struct oct_timestamp_resp));
1365         finfo->sc = sc;
1366
1367         if (!sc) {
1368                 dev_err(&oct->pci_dev->dev, "No memory for timestamped data packet\n");
1369                 return IQ_SEND_FAILED;
1370         }
1371
1372         if (ndata->reqtype == REQTYPE_NORESP_NET)
1373                 ndata->reqtype = REQTYPE_RESP_NET;
1374         else if (ndata->reqtype == REQTYPE_NORESP_NET_SG)
1375                 ndata->reqtype = REQTYPE_RESP_NET_SG;
1376
1377         sc->callback = handle_timestamp;
1378         sc->callback_arg = finfo->skb;
1379         sc->iq_no = ndata->q_no;
1380
1381         len = (u32)((struct octeon_instr_ih3 *)(&sc->cmd.cmd3.ih3))->dlengsz;
1382
1383         ring_doorbell = !xmit_more;
1384
1385         retval = octeon_send_command(oct, sc->iq_no, ring_doorbell, &sc->cmd,
1386                                      sc, len, ndata->reqtype);
1387
1388         if (retval == IQ_SEND_FAILED) {
1389                 dev_err(&oct->pci_dev->dev, "timestamp data packet failed status: %x\n",
1390                         retval);
1391                 octeon_free_soft_command(oct, sc);
1392         } else {
1393                 netif_info(lio, tx_queued, lio->netdev, "Queued timestamp packet\n");
1394         }
1395
1396         return retval;
1397 }
1398
1399 /**
1400  * liquidio_xmit - Transmit networks packets to the Octeon interface
1401  * @skb: skbuff struct to be passed to network layer.
1402  * @netdev: pointer to network device
1403  * @returns whether the packet was transmitted to the device okay or not
1404  *             (NETDEV_TX_OK or NETDEV_TX_BUSY)
1405  */
1406 static netdev_tx_t liquidio_xmit(struct sk_buff *skb, struct net_device *netdev)
1407 {
1408         struct octnet_buf_free_info *finfo;
1409         union octnic_cmd_setup cmdsetup;
1410         struct octnic_data_pkt ndata;
1411         struct octeon_instr_irh *irh;
1412         struct oct_iq_stats *stats;
1413         struct octeon_device *oct;
1414         int q_idx = 0, iq_no = 0;
1415         union tx_info *tx_info;
1416         int xmit_more = 0;
1417         struct lio *lio;
1418         int status = 0;
1419         u64 dptr = 0;
1420         u32 tag = 0;
1421         int j;
1422
1423         lio = GET_LIO(netdev);
1424         oct = lio->oct_dev;
1425
1426         q_idx = skb_iq(lio->oct_dev, skb);
1427         tag = q_idx;
1428         iq_no = lio->linfo.txpciq[q_idx].s.q_no;
1429
1430         stats = &oct->instr_queue[iq_no]->stats;
1431
1432         /* Check for all conditions in which the current packet cannot be
1433          * transmitted.
1434          */
1435         if (!(atomic_read(&lio->ifstate) & LIO_IFSTATE_RUNNING) ||
1436             (!lio->linfo.link.s.link_up) || (skb->len <= 0)) {
1437                 netif_info(lio, tx_err, lio->netdev, "Transmit failed link_status : %d\n",
1438                            lio->linfo.link.s.link_up);
1439                 goto lio_xmit_failed;
1440         }
1441
1442         /* Use space in skb->cb to store info used to unmap and
1443          * free the buffers.
1444          */
1445         finfo = (struct octnet_buf_free_info *)skb->cb;
1446         finfo->lio = lio;
1447         finfo->skb = skb;
1448         finfo->sc = NULL;
1449
1450         /* Prepare the attributes for the data to be passed to OSI. */
1451         memset(&ndata, 0, sizeof(struct octnic_data_pkt));
1452
1453         ndata.buf = finfo;
1454
1455         ndata.q_no = iq_no;
1456
1457         if (octnet_iq_is_full(oct, ndata.q_no)) {
1458                 /* defer sending if queue is full */
1459                 netif_info(lio, tx_err, lio->netdev, "Transmit failed iq:%d full\n",
1460                            ndata.q_no);
1461                 stats->tx_iq_busy++;
1462                 return NETDEV_TX_BUSY;
1463         }
1464
1465         ndata.datasize = skb->len;
1466
1467         cmdsetup.u64 = 0;
1468         cmdsetup.s.iq_no = iq_no;
1469
1470         if (skb->ip_summed == CHECKSUM_PARTIAL) {
1471                 if (skb->encapsulation) {
1472                         cmdsetup.s.tnl_csum = 1;
1473                         stats->tx_vxlan++;
1474                 } else {
1475                         cmdsetup.s.transport_csum = 1;
1476                 }
1477         }
1478         if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) {
1479                 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
1480                 cmdsetup.s.timestamp = 1;
1481         }
1482
1483         if (!skb_shinfo(skb)->nr_frags) {
1484                 cmdsetup.s.u.datasize = skb->len;
1485                 octnet_prepare_pci_cmd(oct, &ndata.cmd, &cmdsetup, tag);
1486                 /* Offload checksum calculation for TCP/UDP packets */
1487                 dptr = dma_map_single(&oct->pci_dev->dev,
1488                                       skb->data,
1489                                       skb->len,
1490                                       DMA_TO_DEVICE);
1491                 if (dma_mapping_error(&oct->pci_dev->dev, dptr)) {
1492                         dev_err(&oct->pci_dev->dev, "%s DMA mapping error 1\n",
1493                                 __func__);
1494                         return NETDEV_TX_BUSY;
1495                 }
1496
1497                 ndata.cmd.cmd3.dptr = dptr;
1498                 finfo->dptr = dptr;
1499                 ndata.reqtype = REQTYPE_NORESP_NET;
1500
1501         } else {
1502                 skb_frag_t *frag;
1503                 struct octnic_gather *g;
1504                 int i, frags;
1505
1506                 spin_lock(&lio->glist_lock[q_idx]);
1507                 g = (struct octnic_gather *)
1508                         lio_list_delete_head(&lio->glist[q_idx]);
1509                 spin_unlock(&lio->glist_lock[q_idx]);
1510
1511                 if (!g) {
1512                         netif_info(lio, tx_err, lio->netdev,
1513                                    "Transmit scatter gather: glist null!\n");
1514                         goto lio_xmit_failed;
1515                 }
1516
1517                 cmdsetup.s.gather = 1;
1518                 cmdsetup.s.u.gatherptrs = (skb_shinfo(skb)->nr_frags + 1);
1519                 octnet_prepare_pci_cmd(oct, &ndata.cmd, &cmdsetup, tag);
1520
1521                 memset(g->sg, 0, g->sg_size);
1522
1523                 g->sg[0].ptr[0] = dma_map_single(&oct->pci_dev->dev,
1524                                                  skb->data,
1525                                                  (skb->len - skb->data_len),
1526                                                  DMA_TO_DEVICE);
1527                 if (dma_mapping_error(&oct->pci_dev->dev, g->sg[0].ptr[0])) {
1528                         dev_err(&oct->pci_dev->dev, "%s DMA mapping error 2\n",
1529                                 __func__);
1530                         return NETDEV_TX_BUSY;
1531                 }
1532                 add_sg_size(&g->sg[0], (skb->len - skb->data_len), 0);
1533
1534                 frags = skb_shinfo(skb)->nr_frags;
1535                 i = 1;
1536                 while (frags--) {
1537                         frag = &skb_shinfo(skb)->frags[i - 1];
1538
1539                         g->sg[(i >> 2)].ptr[(i & 3)] =
1540                                 skb_frag_dma_map(&oct->pci_dev->dev,
1541                                                  frag, 0, skb_frag_size(frag),
1542                                                  DMA_TO_DEVICE);
1543                         if (dma_mapping_error(&oct->pci_dev->dev,
1544                                               g->sg[i >> 2].ptr[i & 3])) {
1545                                 dma_unmap_single(&oct->pci_dev->dev,
1546                                                  g->sg[0].ptr[0],
1547                                                  skb->len - skb->data_len,
1548                                                  DMA_TO_DEVICE);
1549                                 for (j = 1; j < i; j++) {
1550                                         frag = &skb_shinfo(skb)->frags[j - 1];
1551                                         dma_unmap_page(&oct->pci_dev->dev,
1552                                                        g->sg[j >> 2].ptr[j & 3],
1553                                                        skb_frag_size(frag),
1554                                                        DMA_TO_DEVICE);
1555                                 }
1556                                 dev_err(&oct->pci_dev->dev, "%s DMA mapping error 3\n",
1557                                         __func__);
1558                                 return NETDEV_TX_BUSY;
1559                         }
1560
1561                         add_sg_size(&g->sg[(i >> 2)], skb_frag_size(frag),
1562                                     (i & 3));
1563                         i++;
1564                 }
1565
1566                 dptr = g->sg_dma_ptr;
1567
1568                 ndata.cmd.cmd3.dptr = dptr;
1569                 finfo->dptr = dptr;
1570                 finfo->g = g;
1571
1572                 ndata.reqtype = REQTYPE_NORESP_NET_SG;
1573         }
1574
1575         irh = (struct octeon_instr_irh *)&ndata.cmd.cmd3.irh;
1576         tx_info = (union tx_info *)&ndata.cmd.cmd3.ossp[0];
1577
1578         if (skb_shinfo(skb)->gso_size) {
1579                 tx_info->s.gso_size = skb_shinfo(skb)->gso_size;
1580                 tx_info->s.gso_segs = skb_shinfo(skb)->gso_segs;
1581         }
1582
1583         /* HW insert VLAN tag */
1584         if (skb_vlan_tag_present(skb)) {
1585                 irh->priority = skb_vlan_tag_get(skb) >> VLAN_PRIO_SHIFT;
1586                 irh->vlan = skb_vlan_tag_get(skb) & VLAN_VID_MASK;
1587         }
1588
1589         xmit_more = netdev_xmit_more();
1590
1591         if (unlikely(cmdsetup.s.timestamp))
1592                 status = send_nic_timestamp_pkt(oct, &ndata, finfo, xmit_more);
1593         else
1594                 status = octnet_send_nic_data_pkt(oct, &ndata, xmit_more);
1595         if (status == IQ_SEND_FAILED)
1596                 goto lio_xmit_failed;
1597
1598         netif_info(lio, tx_queued, lio->netdev, "Transmit queued successfully\n");
1599
1600         if (status == IQ_SEND_STOP) {
1601                 dev_err(&oct->pci_dev->dev, "Rcvd IQ_SEND_STOP signal; stopping IQ-%d\n",
1602                         iq_no);
1603                 netif_stop_subqueue(netdev, q_idx);
1604         }
1605
1606         netif_trans_update(netdev);
1607
1608         if (tx_info->s.gso_segs)
1609                 stats->tx_done += tx_info->s.gso_segs;
1610         else
1611                 stats->tx_done++;
1612         stats->tx_tot_bytes += ndata.datasize;
1613
1614         return NETDEV_TX_OK;
1615
1616 lio_xmit_failed:
1617         stats->tx_dropped++;
1618         netif_info(lio, tx_err, lio->netdev, "IQ%d Transmit dropped:%llu\n",
1619                    iq_no, stats->tx_dropped);
1620         if (dptr)
1621                 dma_unmap_single(&oct->pci_dev->dev, dptr,
1622                                  ndata.datasize, DMA_TO_DEVICE);
1623
1624         octeon_ring_doorbell_locked(oct, iq_no);
1625
1626         tx_buffer_free(skb);
1627         return NETDEV_TX_OK;
1628 }
1629
1630 /**
1631  * liquidio_tx_timeout - Network device Tx timeout
1632  * @netdev: pointer to network device
1633  * @txqueue: index of the hung transmit queue
1634  */
1635 static void liquidio_tx_timeout(struct net_device *netdev, unsigned int txqueue)
1636 {
1637         struct lio *lio;
1638
1639         lio = GET_LIO(netdev);
1640
1641         netif_info(lio, tx_err, lio->netdev,
1642                    "Transmit timeout tx_dropped:%ld, waking up queues now!!\n",
1643                    netdev->stats.tx_dropped);
1644         netif_trans_update(netdev);
1645         wake_txqs(netdev);
1646 }
1647
1648 static int
1649 liquidio_vlan_rx_add_vid(struct net_device *netdev,
1650                          __be16 proto __attribute__((unused)), u16 vid)
1651 {
1652         struct lio *lio = GET_LIO(netdev);
1653         struct octeon_device *oct = lio->oct_dev;
1654         struct octnic_ctrl_pkt nctrl;
1655         int ret = 0;
1656
1657         memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
1658
1659         nctrl.ncmd.u64 = 0;
1660         nctrl.ncmd.s.cmd = OCTNET_CMD_ADD_VLAN_FILTER;
1661         nctrl.ncmd.s.param1 = vid;
1662         nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
1663         nctrl.netpndev = (u64)netdev;
1664         nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
1665
1666         ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
1667         if (ret) {
1668                 dev_err(&oct->pci_dev->dev, "Add VLAN filter failed in core (ret: 0x%x)\n",
1669                         ret);
1670                 return -EPERM;
1671         }
1672
1673         return 0;
1674 }
1675
1676 static int
1677 liquidio_vlan_rx_kill_vid(struct net_device *netdev,
1678                           __be16 proto __attribute__((unused)), u16 vid)
1679 {
1680         struct lio *lio = GET_LIO(netdev);
1681         struct octeon_device *oct = lio->oct_dev;
1682         struct octnic_ctrl_pkt nctrl;
1683         int ret = 0;
1684
1685         memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
1686
1687         nctrl.ncmd.u64 = 0;
1688         nctrl.ncmd.s.cmd = OCTNET_CMD_DEL_VLAN_FILTER;
1689         nctrl.ncmd.s.param1 = vid;
1690         nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
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) {
1696                 dev_err(&oct->pci_dev->dev, "Del VLAN filter failed in core (ret: 0x%x)\n",
1697                         ret);
1698                 if (ret > 0)
1699                         ret = -EIO;
1700         }
1701         return ret;
1702 }
1703
1704 /** Sending command to enable/disable RX checksum offload
1705  * @param netdev                pointer to network device
1706  * @param command               OCTNET_CMD_TNL_RX_CSUM_CTL
1707  * @param rx_cmd_bit            OCTNET_CMD_RXCSUM_ENABLE/
1708  *                              OCTNET_CMD_RXCSUM_DISABLE
1709  * @returns                     SUCCESS or FAILURE
1710  */
1711 static int liquidio_set_rxcsum_command(struct net_device *netdev, int command,
1712                                        u8 rx_cmd)
1713 {
1714         struct lio *lio = GET_LIO(netdev);
1715         struct octeon_device *oct = lio->oct_dev;
1716         struct octnic_ctrl_pkt nctrl;
1717         int ret = 0;
1718
1719         memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
1720
1721         nctrl.ncmd.u64 = 0;
1722         nctrl.ncmd.s.cmd = command;
1723         nctrl.ncmd.s.param1 = rx_cmd;
1724         nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
1725         nctrl.netpndev = (u64)netdev;
1726         nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
1727
1728         ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
1729         if (ret) {
1730                 dev_err(&oct->pci_dev->dev, "DEVFLAGS RXCSUM change failed in core (ret:0x%x)\n",
1731                         ret);
1732                 if (ret > 0)
1733                         ret = -EIO;
1734         }
1735         return ret;
1736 }
1737
1738 /** Sending command to add/delete VxLAN UDP port to firmware
1739  * @param netdev                pointer to network device
1740  * @param command               OCTNET_CMD_VXLAN_PORT_CONFIG
1741  * @param vxlan_port            VxLAN port to be added or deleted
1742  * @param vxlan_cmd_bit         OCTNET_CMD_VXLAN_PORT_ADD,
1743  *                              OCTNET_CMD_VXLAN_PORT_DEL
1744  * @returns                     SUCCESS or FAILURE
1745  */
1746 static int liquidio_vxlan_port_command(struct net_device *netdev, int command,
1747                                        u16 vxlan_port, u8 vxlan_cmd_bit)
1748 {
1749         struct lio *lio = GET_LIO(netdev);
1750         struct octeon_device *oct = lio->oct_dev;
1751         struct octnic_ctrl_pkt nctrl;
1752         int ret = 0;
1753
1754         memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
1755
1756         nctrl.ncmd.u64 = 0;
1757         nctrl.ncmd.s.cmd = command;
1758         nctrl.ncmd.s.more = vxlan_cmd_bit;
1759         nctrl.ncmd.s.param1 = vxlan_port;
1760         nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
1761         nctrl.netpndev = (u64)netdev;
1762         nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
1763
1764         ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
1765         if (ret) {
1766                 dev_err(&oct->pci_dev->dev,
1767                         "DEVFLAGS VxLAN port add/delete failed in core (ret : 0x%x)\n",
1768                         ret);
1769                 if (ret > 0)
1770                         ret = -EIO;
1771         }
1772         return ret;
1773 }
1774
1775 static int liquidio_udp_tunnel_set_port(struct net_device *netdev,
1776                                         unsigned int table, unsigned int entry,
1777                                         struct udp_tunnel_info *ti)
1778 {
1779         return liquidio_vxlan_port_command(netdev,
1780                                            OCTNET_CMD_VXLAN_PORT_CONFIG,
1781                                            htons(ti->port),
1782                                            OCTNET_CMD_VXLAN_PORT_ADD);
1783 }
1784
1785 static int liquidio_udp_tunnel_unset_port(struct net_device *netdev,
1786                                           unsigned int table,
1787                                           unsigned int entry,
1788                                           struct udp_tunnel_info *ti)
1789 {
1790         return liquidio_vxlan_port_command(netdev,
1791                                            OCTNET_CMD_VXLAN_PORT_CONFIG,
1792                                            htons(ti->port),
1793                                            OCTNET_CMD_VXLAN_PORT_DEL);
1794 }
1795
1796 static const struct udp_tunnel_nic_info liquidio_udp_tunnels = {
1797         .set_port       = liquidio_udp_tunnel_set_port,
1798         .unset_port     = liquidio_udp_tunnel_unset_port,
1799         .tables         = {
1800                 { .n_entries = 1024, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, },
1801         },
1802 };
1803
1804 /** \brief Net device fix features
1805  * @param netdev  pointer to network device
1806  * @param request features requested
1807  * @returns updated features list
1808  */
1809 static netdev_features_t liquidio_fix_features(struct net_device *netdev,
1810                                                netdev_features_t request)
1811 {
1812         struct lio *lio = netdev_priv(netdev);
1813
1814         if ((request & NETIF_F_RXCSUM) &&
1815             !(lio->dev_capability & NETIF_F_RXCSUM))
1816                 request &= ~NETIF_F_RXCSUM;
1817
1818         if ((request & NETIF_F_HW_CSUM) &&
1819             !(lio->dev_capability & NETIF_F_HW_CSUM))
1820                 request &= ~NETIF_F_HW_CSUM;
1821
1822         if ((request & NETIF_F_TSO) && !(lio->dev_capability & NETIF_F_TSO))
1823                 request &= ~NETIF_F_TSO;
1824
1825         if ((request & NETIF_F_TSO6) && !(lio->dev_capability & NETIF_F_TSO6))
1826                 request &= ~NETIF_F_TSO6;
1827
1828         if ((request & NETIF_F_LRO) && !(lio->dev_capability & NETIF_F_LRO))
1829                 request &= ~NETIF_F_LRO;
1830
1831         /* Disable LRO if RXCSUM is off */
1832         if (!(request & NETIF_F_RXCSUM) && (netdev->features & NETIF_F_LRO) &&
1833             (lio->dev_capability & NETIF_F_LRO))
1834                 request &= ~NETIF_F_LRO;
1835
1836         return request;
1837 }
1838
1839 /** \brief Net device set features
1840  * @param netdev  pointer to network device
1841  * @param features features to enable/disable
1842  */
1843 static int liquidio_set_features(struct net_device *netdev,
1844                                  netdev_features_t features)
1845 {
1846         struct lio *lio = netdev_priv(netdev);
1847
1848         if (!((netdev->features ^ features) & NETIF_F_LRO))
1849                 return 0;
1850
1851         if ((features & NETIF_F_LRO) && (lio->dev_capability & NETIF_F_LRO))
1852                 liquidio_set_feature(netdev, OCTNET_CMD_LRO_ENABLE,
1853                                      OCTNIC_LROIPV4 | OCTNIC_LROIPV6);
1854         else if (!(features & NETIF_F_LRO) &&
1855                  (lio->dev_capability & NETIF_F_LRO))
1856                 liquidio_set_feature(netdev, OCTNET_CMD_LRO_DISABLE,
1857                                      OCTNIC_LROIPV4 | OCTNIC_LROIPV6);
1858         if (!(netdev->features & NETIF_F_RXCSUM) &&
1859             (lio->enc_dev_capability & NETIF_F_RXCSUM) &&
1860             (features & NETIF_F_RXCSUM))
1861                 liquidio_set_rxcsum_command(netdev, OCTNET_CMD_TNL_RX_CSUM_CTL,
1862                                             OCTNET_CMD_RXCSUM_ENABLE);
1863         else if ((netdev->features & NETIF_F_RXCSUM) &&
1864                  (lio->enc_dev_capability & NETIF_F_RXCSUM) &&
1865                  !(features & NETIF_F_RXCSUM))
1866                 liquidio_set_rxcsum_command(netdev, OCTNET_CMD_TNL_RX_CSUM_CTL,
1867                                             OCTNET_CMD_RXCSUM_DISABLE);
1868
1869         return 0;
1870 }
1871
1872 static const struct net_device_ops lionetdevops = {
1873         .ndo_open               = liquidio_open,
1874         .ndo_stop               = liquidio_stop,
1875         .ndo_start_xmit         = liquidio_xmit,
1876         .ndo_get_stats64        = liquidio_get_stats64,
1877         .ndo_set_mac_address    = liquidio_set_mac,
1878         .ndo_set_rx_mode        = liquidio_set_mcast_list,
1879         .ndo_tx_timeout         = liquidio_tx_timeout,
1880         .ndo_vlan_rx_add_vid    = liquidio_vlan_rx_add_vid,
1881         .ndo_vlan_rx_kill_vid   = liquidio_vlan_rx_kill_vid,
1882         .ndo_change_mtu         = liquidio_change_mtu,
1883         .ndo_eth_ioctl          = liquidio_ioctl,
1884         .ndo_fix_features       = liquidio_fix_features,
1885         .ndo_set_features       = liquidio_set_features,
1886 };
1887
1888 static int lio_nic_info(struct octeon_recv_info *recv_info, void *buf)
1889 {
1890         struct octeon_device *oct = (struct octeon_device *)buf;
1891         struct octeon_recv_pkt *recv_pkt = recv_info->recv_pkt;
1892         union oct_link_status *ls;
1893         int gmxport = 0;
1894         int i;
1895
1896         if (recv_pkt->buffer_size[0] != (sizeof(*ls) + OCT_DROQ_INFO_SIZE)) {
1897                 dev_err(&oct->pci_dev->dev, "Malformed NIC_INFO, len=%d, ifidx=%d\n",
1898                         recv_pkt->buffer_size[0],
1899                         recv_pkt->rh.r_nic_info.gmxport);
1900                 goto nic_info_err;
1901         }
1902
1903         gmxport = recv_pkt->rh.r_nic_info.gmxport;
1904         ls = (union oct_link_status *)(get_rbd(recv_pkt->buffer_ptr[0]) +
1905                 OCT_DROQ_INFO_SIZE);
1906
1907         octeon_swap_8B_data((u64 *)ls, (sizeof(union oct_link_status)) >> 3);
1908
1909         for (i = 0; i < oct->ifcount; i++) {
1910                 if (oct->props[i].gmxport == gmxport) {
1911                         update_link_status(oct->props[i].netdev, ls);
1912                         break;
1913                 }
1914         }
1915
1916 nic_info_err:
1917         for (i = 0; i < recv_pkt->buffer_count; i++)
1918                 recv_buffer_free(recv_pkt->buffer_ptr[i]);
1919         octeon_free_recv_info(recv_info);
1920         return 0;
1921 }
1922
1923 /**
1924  * setup_nic_devices - Setup network interfaces
1925  * @octeon_dev:  octeon device
1926  *
1927  * Called during init time for each device. It assumes the NIC
1928  * is already up and running.  The link information for each
1929  * interface is passed in link_info.
1930  */
1931 static int setup_nic_devices(struct octeon_device *octeon_dev)
1932 {
1933         int retval, num_iqueues, num_oqueues;
1934         u32 resp_size, data_size;
1935         struct liquidio_if_cfg_resp *resp;
1936         struct octeon_soft_command *sc;
1937         union oct_nic_if_cfg if_cfg;
1938         struct octdev_props *props;
1939         struct net_device *netdev;
1940         struct lio_version *vdata;
1941         struct lio *lio = NULL;
1942         u8 mac[ETH_ALEN], i, j;
1943         u32 ifidx_or_pfnum;
1944
1945         ifidx_or_pfnum = octeon_dev->pf_num;
1946
1947         /* This is to handle link status changes */
1948         octeon_register_dispatch_fn(octeon_dev, OPCODE_NIC, OPCODE_NIC_INFO,
1949                                     lio_nic_info, octeon_dev);
1950
1951         /* REQTYPE_RESP_NET and REQTYPE_SOFT_COMMAND do not have free functions.
1952          * They are handled directly.
1953          */
1954         octeon_register_reqtype_free_fn(octeon_dev, REQTYPE_NORESP_NET,
1955                                         free_netbuf);
1956
1957         octeon_register_reqtype_free_fn(octeon_dev, REQTYPE_NORESP_NET_SG,
1958                                         free_netsgbuf);
1959
1960         octeon_register_reqtype_free_fn(octeon_dev, REQTYPE_RESP_NET_SG,
1961                                         free_netsgbuf_with_resp);
1962
1963         for (i = 0; i < octeon_dev->ifcount; i++) {
1964                 resp_size = sizeof(struct liquidio_if_cfg_resp);
1965                 data_size = sizeof(struct lio_version);
1966                 sc = (struct octeon_soft_command *)
1967                         octeon_alloc_soft_command(octeon_dev, data_size,
1968                                                   resp_size, 0);
1969                 resp = (struct liquidio_if_cfg_resp *)sc->virtrptr;
1970                 vdata = (struct lio_version *)sc->virtdptr;
1971
1972                 *((u64 *)vdata) = 0;
1973                 vdata->major = cpu_to_be16(LIQUIDIO_BASE_MAJOR_VERSION);
1974                 vdata->minor = cpu_to_be16(LIQUIDIO_BASE_MINOR_VERSION);
1975                 vdata->micro = cpu_to_be16(LIQUIDIO_BASE_MICRO_VERSION);
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                 init_completion(&sc->complete);
1990                 sc->sc_status = OCTEON_REQUEST_PENDING;
1991
1992                 retval = octeon_send_soft_command(octeon_dev, sc);
1993                 if (retval == IQ_SEND_FAILED) {
1994                         dev_err(&octeon_dev->pci_dev->dev,
1995                                 "iq/oq config failed status: %x\n", retval);
1996                         /* Soft instr is freed by driver in case of failure. */
1997                         octeon_free_soft_command(octeon_dev, sc);
1998                         return(-EIO);
1999                 }
2000
2001                 /* Sleep on a wait queue till the cond flag indicates that the
2002                  * response arrived or timed-out.
2003                  */
2004                 retval = wait_for_sc_completion_timeout(octeon_dev, sc, 0);
2005                 if (retval)
2006                         return retval;
2007
2008                 retval = resp->status;
2009                 if (retval) {
2010                         dev_err(&octeon_dev->pci_dev->dev,
2011                                 "iq/oq config failed, retval = %d\n", retval);
2012                         WRITE_ONCE(sc->caller_is_done, true);
2013                         return -EIO;
2014                 }
2015
2016                 snprintf(octeon_dev->fw_info.liquidio_firmware_version,
2017                          32, "%s",
2018                          resp->cfg_info.liquidio_firmware_version);
2019
2020                 octeon_swap_8B_data((u64 *)(&resp->cfg_info),
2021                                     (sizeof(struct liquidio_if_cfg_info)) >> 3);
2022
2023                 num_iqueues = hweight64(resp->cfg_info.iqmask);
2024                 num_oqueues = hweight64(resp->cfg_info.oqmask);
2025
2026                 if (!(num_iqueues) || !(num_oqueues)) {
2027                         dev_err(&octeon_dev->pci_dev->dev,
2028                                 "Got bad iqueues (%016llx) or oqueues (%016llx) from firmware.\n",
2029                                 resp->cfg_info.iqmask, resp->cfg_info.oqmask);
2030                         WRITE_ONCE(sc->caller_is_done, true);
2031                         goto setup_nic_dev_done;
2032                 }
2033                 dev_dbg(&octeon_dev->pci_dev->dev,
2034                         "interface %d, iqmask %016llx, oqmask %016llx, numiqueues %d, numoqueues %d\n",
2035                         i, resp->cfg_info.iqmask, resp->cfg_info.oqmask,
2036                         num_iqueues, num_oqueues);
2037
2038                 netdev = alloc_etherdev_mq(LIO_SIZE, num_iqueues);
2039
2040                 if (!netdev) {
2041                         dev_err(&octeon_dev->pci_dev->dev, "Device allocation failed\n");
2042                         WRITE_ONCE(sc->caller_is_done, true);
2043                         goto setup_nic_dev_done;
2044                 }
2045
2046                 SET_NETDEV_DEV(netdev, &octeon_dev->pci_dev->dev);
2047
2048                 /* Associate the routines that will handle different
2049                  * netdev tasks.
2050                  */
2051                 netdev->netdev_ops = &lionetdevops;
2052
2053                 lio = GET_LIO(netdev);
2054
2055                 memset(lio, 0, sizeof(struct lio));
2056
2057                 lio->ifidx = ifidx_or_pfnum;
2058
2059                 props = &octeon_dev->props[i];
2060                 props->gmxport = resp->cfg_info.linfo.gmxport;
2061                 props->netdev = netdev;
2062
2063                 lio->linfo.num_rxpciq = num_oqueues;
2064                 lio->linfo.num_txpciq = num_iqueues;
2065
2066                 for (j = 0; j < num_oqueues; j++) {
2067                         lio->linfo.rxpciq[j].u64 =
2068                             resp->cfg_info.linfo.rxpciq[j].u64;
2069                 }
2070                 for (j = 0; j < num_iqueues; j++) {
2071                         lio->linfo.txpciq[j].u64 =
2072                             resp->cfg_info.linfo.txpciq[j].u64;
2073                 }
2074
2075                 lio->linfo.hw_addr = resp->cfg_info.linfo.hw_addr;
2076                 lio->linfo.gmxport = resp->cfg_info.linfo.gmxport;
2077                 lio->linfo.link.u64 = resp->cfg_info.linfo.link.u64;
2078                 lio->linfo.macaddr_is_admin_asgnd =
2079                         resp->cfg_info.linfo.macaddr_is_admin_asgnd;
2080                 lio->linfo.macaddr_spoofchk =
2081                         resp->cfg_info.linfo.macaddr_spoofchk;
2082
2083                 lio->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE);
2084
2085                 lio->dev_capability = NETIF_F_HIGHDMA
2086                                       | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM
2087                                       | NETIF_F_SG | NETIF_F_RXCSUM
2088                                       | NETIF_F_TSO | NETIF_F_TSO6
2089                                       | NETIF_F_GRO
2090                                       | NETIF_F_LRO;
2091                 netif_set_tso_max_size(netdev, OCTNIC_GSO_MAX_SIZE);
2092
2093                 /* Copy of transmit encapsulation capabilities:
2094                  * TSO, TSO6, Checksums for this device
2095                  */
2096                 lio->enc_dev_capability = NETIF_F_IP_CSUM
2097                                           | NETIF_F_IPV6_CSUM
2098                                           | NETIF_F_GSO_UDP_TUNNEL
2099                                           | NETIF_F_HW_CSUM | NETIF_F_SG
2100                                           | NETIF_F_RXCSUM
2101                                           | NETIF_F_TSO | NETIF_F_TSO6
2102                                           | NETIF_F_LRO;
2103
2104                 netdev->hw_enc_features =
2105                     (lio->enc_dev_capability & ~NETIF_F_LRO);
2106                 netdev->udp_tunnel_nic_info = &liquidio_udp_tunnels;
2107
2108                 netdev->vlan_features = lio->dev_capability;
2109                 /* Add any unchangeable hw features */
2110                 lio->dev_capability |= NETIF_F_HW_VLAN_CTAG_FILTER |
2111                                        NETIF_F_HW_VLAN_CTAG_RX |
2112                                        NETIF_F_HW_VLAN_CTAG_TX;
2113
2114                 netdev->features = (lio->dev_capability & ~NETIF_F_LRO);
2115
2116                 netdev->hw_features = lio->dev_capability;
2117                 netdev->hw_features &= ~NETIF_F_HW_VLAN_CTAG_RX;
2118
2119                 /* MTU range: 68 - 16000 */
2120                 netdev->min_mtu = LIO_MIN_MTU_SIZE;
2121                 netdev->max_mtu = LIO_MAX_MTU_SIZE;
2122
2123                 WRITE_ONCE(sc->caller_is_done, true);
2124
2125                 /* Point to the  properties for octeon device to which this
2126                  * interface belongs.
2127                  */
2128                 lio->oct_dev = octeon_dev;
2129                 lio->octprops = props;
2130                 lio->netdev = netdev;
2131
2132                 dev_dbg(&octeon_dev->pci_dev->dev,
2133                         "if%d gmx: %d hw_addr: 0x%llx\n", i,
2134                         lio->linfo.gmxport, CVM_CAST64(lio->linfo.hw_addr));
2135
2136                 /* 64-bit swap required on LE machines */
2137                 octeon_swap_8B_data(&lio->linfo.hw_addr, 1);
2138                 for (j = 0; j < ETH_ALEN; j++)
2139                         mac[j] = *((u8 *)(((u8 *)&lio->linfo.hw_addr) + 2 + j));
2140
2141                 /* Copy MAC Address to OS network device structure */
2142                 eth_hw_addr_set(netdev, mac);
2143
2144                 if (liquidio_setup_io_queues(octeon_dev, i,
2145                                              lio->linfo.num_txpciq,
2146                                              lio->linfo.num_rxpciq)) {
2147                         dev_err(&octeon_dev->pci_dev->dev, "I/O queues creation failed\n");
2148                         goto setup_nic_dev_free;
2149                 }
2150
2151                 ifstate_set(lio, LIO_IFSTATE_DROQ_OPS);
2152
2153                 /* For VFs, enable Octeon device interrupts here,
2154                  * as this is contingent upon IO queue setup
2155                  */
2156                 octeon_dev->fn_list.enable_interrupt(octeon_dev,
2157                                                      OCTEON_ALL_INTR);
2158
2159                 /* By default all interfaces on a single Octeon uses the same
2160                  * tx and rx queues
2161                  */
2162                 lio->txq = lio->linfo.txpciq[0].s.q_no;
2163                 lio->rxq = lio->linfo.rxpciq[0].s.q_no;
2164
2165                 lio->tx_qsize = octeon_get_tx_qsize(octeon_dev, lio->txq);
2166                 lio->rx_qsize = octeon_get_rx_qsize(octeon_dev, lio->rxq);
2167
2168                 if (lio_setup_glists(octeon_dev, lio, num_iqueues)) {
2169                         dev_err(&octeon_dev->pci_dev->dev,
2170                                 "Gather list allocation failed\n");
2171                         goto setup_nic_dev_free;
2172                 }
2173
2174                 /* Register ethtool support */
2175                 liquidio_set_ethtool_ops(netdev);
2176                 if (lio->oct_dev->chip_id == OCTEON_CN23XX_VF_VID)
2177                         octeon_dev->priv_flags = OCT_PRIV_FLAG_DEFAULT;
2178                 else
2179                         octeon_dev->priv_flags = 0x0;
2180
2181                 if (netdev->features & NETIF_F_LRO)
2182                         liquidio_set_feature(netdev, OCTNET_CMD_LRO_ENABLE,
2183                                              OCTNIC_LROIPV4 | OCTNIC_LROIPV6);
2184
2185                 if (setup_link_status_change_wq(netdev))
2186                         goto setup_nic_dev_free;
2187
2188                 if (setup_rx_oom_poll_fn(netdev))
2189                         goto setup_nic_dev_free;
2190
2191                 /* Register the network device with the OS */
2192                 if (register_netdev(netdev)) {
2193                         dev_err(&octeon_dev->pci_dev->dev, "Device registration failed\n");
2194                         goto setup_nic_dev_free;
2195                 }
2196
2197                 dev_dbg(&octeon_dev->pci_dev->dev,
2198                         "Setup NIC ifidx:%d mac:%02x%02x%02x%02x%02x%02x\n",
2199                         i, mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
2200                 netif_carrier_off(netdev);
2201                 lio->link_changes++;
2202
2203                 ifstate_set(lio, LIO_IFSTATE_REGISTERED);
2204
2205                 /* Sending command to firmware to enable Rx checksum offload
2206                  * by default at the time of setup of Liquidio driver for
2207                  * this device
2208                  */
2209                 liquidio_set_rxcsum_command(netdev, OCTNET_CMD_TNL_RX_CSUM_CTL,
2210                                             OCTNET_CMD_RXCSUM_ENABLE);
2211                 liquidio_set_feature(netdev, OCTNET_CMD_TNL_TX_CSUM_CTL,
2212                                      OCTNET_CMD_TXCSUM_ENABLE);
2213
2214                 dev_dbg(&octeon_dev->pci_dev->dev,
2215                         "NIC ifidx:%d Setup successful\n", i);
2216
2217                 octeon_dev->no_speed_setting = 1;
2218         }
2219
2220         return 0;
2221
2222 setup_nic_dev_free:
2223
2224         while (i--) {
2225                 dev_err(&octeon_dev->pci_dev->dev,
2226                         "NIC ifidx:%d Setup failed\n", i);
2227                 liquidio_destroy_nic_device(octeon_dev, i);
2228         }
2229
2230 setup_nic_dev_done:
2231
2232         return -ENODEV;
2233 }
2234
2235 /**
2236  * liquidio_init_nic_module - initialize the NIC
2237  * @oct: octeon device
2238  *
2239  * This initialization routine is called once the Octeon device application is
2240  * up and running
2241  */
2242 static int liquidio_init_nic_module(struct octeon_device *oct)
2243 {
2244         int num_nic_ports = 1;
2245         int i, retval = 0;
2246
2247         dev_dbg(&oct->pci_dev->dev, "Initializing network interfaces\n");
2248
2249         /* only default iq and oq were initialized
2250          * initialize the rest as well run port_config command for each port
2251          */
2252         oct->ifcount = num_nic_ports;
2253         memset(oct->props, 0,
2254                sizeof(struct octdev_props) * num_nic_ports);
2255
2256         for (i = 0; i < MAX_OCTEON_LINKS; i++)
2257                 oct->props[i].gmxport = -1;
2258
2259         retval = setup_nic_devices(oct);
2260         if (retval) {
2261                 dev_err(&oct->pci_dev->dev, "Setup NIC devices failed\n");
2262                 goto octnet_init_failure;
2263         }
2264
2265         dev_dbg(&oct->pci_dev->dev, "Network interfaces ready\n");
2266
2267         return retval;
2268
2269 octnet_init_failure:
2270
2271         oct->ifcount = 0;
2272
2273         return retval;
2274 }
2275
2276 /**
2277  * octeon_device_init - Device initialization for each Octeon device that is probed
2278  * @oct:  octeon device
2279  */
2280 static int octeon_device_init(struct octeon_device *oct)
2281 {
2282         u32 rev_id;
2283         int j;
2284
2285         atomic_set(&oct->status, OCT_DEV_BEGIN_STATE);
2286
2287         /* Enable access to the octeon device and make its DMA capability
2288          * known to the OS.
2289          */
2290         if (octeon_pci_os_setup(oct))
2291                 return 1;
2292         atomic_set(&oct->status, OCT_DEV_PCI_ENABLE_DONE);
2293
2294         oct->chip_id = OCTEON_CN23XX_VF_VID;
2295         pci_read_config_dword(oct->pci_dev, 8, &rev_id);
2296         oct->rev_id = rev_id & 0xff;
2297
2298         if (cn23xx_setup_octeon_vf_device(oct))
2299                 return 1;
2300
2301         atomic_set(&oct->status, OCT_DEV_PCI_MAP_DONE);
2302
2303         oct->app_mode = CVM_DRV_NIC_APP;
2304
2305         /* Initialize the dispatch mechanism used to push packets arriving on
2306          * Octeon Output queues.
2307          */
2308         if (octeon_init_dispatch_list(oct))
2309                 return 1;
2310
2311         atomic_set(&oct->status, OCT_DEV_DISPATCH_INIT_DONE);
2312
2313         if (octeon_set_io_queues_off(oct)) {
2314                 dev_err(&oct->pci_dev->dev, "setting io queues off failed\n");
2315                 return 1;
2316         }
2317
2318         if (oct->fn_list.setup_device_regs(oct)) {
2319                 dev_err(&oct->pci_dev->dev, "device registers configuration failed\n");
2320                 return 1;
2321         }
2322
2323         /* Initialize soft command buffer pool */
2324         if (octeon_setup_sc_buffer_pool(oct)) {
2325                 dev_err(&oct->pci_dev->dev, "sc buffer pool allocation failed\n");
2326                 return 1;
2327         }
2328         atomic_set(&oct->status, OCT_DEV_SC_BUFF_POOL_INIT_DONE);
2329
2330         /* Setup the data structures that manage this Octeon's Input queues. */
2331         if (octeon_setup_instr_queues(oct)) {
2332                 dev_err(&oct->pci_dev->dev, "instruction queue initialization failed\n");
2333                 return 1;
2334         }
2335         atomic_set(&oct->status, OCT_DEV_INSTR_QUEUE_INIT_DONE);
2336
2337         /* Initialize lists to manage the requests of different types that
2338          * arrive from user & kernel applications for this octeon device.
2339          */
2340         if (octeon_setup_response_list(oct)) {
2341                 dev_err(&oct->pci_dev->dev, "Response list allocation failed\n");
2342                 return 1;
2343         }
2344         atomic_set(&oct->status, OCT_DEV_RESP_LIST_INIT_DONE);
2345
2346         if (octeon_setup_output_queues(oct)) {
2347                 dev_err(&oct->pci_dev->dev, "Output queue initialization failed\n");
2348                 return 1;
2349         }
2350         atomic_set(&oct->status, OCT_DEV_DROQ_INIT_DONE);
2351
2352         if (oct->fn_list.setup_mbox(oct)) {
2353                 dev_err(&oct->pci_dev->dev, "Mailbox setup failed\n");
2354                 return 1;
2355         }
2356         atomic_set(&oct->status, OCT_DEV_MBOX_SETUP_DONE);
2357
2358         if (octeon_allocate_ioq_vector(oct, oct->sriov_info.rings_per_vf)) {
2359                 dev_err(&oct->pci_dev->dev, "ioq vector allocation failed\n");
2360                 return 1;
2361         }
2362         atomic_set(&oct->status, OCT_DEV_MSIX_ALLOC_VECTOR_DONE);
2363
2364         dev_info(&oct->pci_dev->dev, "OCTEON_CN23XX VF: %d ioqs\n",
2365                  oct->sriov_info.rings_per_vf);
2366
2367         /* Setup the interrupt handler and record the INT SUM register address*/
2368         if (octeon_setup_interrupt(oct, oct->sriov_info.rings_per_vf))
2369                 return 1;
2370
2371         atomic_set(&oct->status, OCT_DEV_INTR_SET_DONE);
2372
2373         /* ***************************************************************
2374          * The interrupts need to be enabled for the PF<-->VF handshake.
2375          * They are [re]-enabled after the PF<-->VF handshake so that the
2376          * correct OQ tick value is used (i.e. the value retrieved from
2377          * the PF as part of the handshake).
2378          */
2379
2380         /* Enable Octeon device interrupts */
2381         oct->fn_list.enable_interrupt(oct, OCTEON_ALL_INTR);
2382
2383         if (cn23xx_octeon_pfvf_handshake(oct))
2384                 return 1;
2385
2386         /* Here we [re]-enable the interrupts so that the correct OQ tick value
2387          * is used (i.e. the value that was retrieved during the handshake)
2388          */
2389
2390         /* Enable Octeon device interrupts */
2391         oct->fn_list.enable_interrupt(oct, OCTEON_ALL_INTR);
2392         /* *************************************************************** */
2393
2394         /* Enable the input and output queues for this Octeon device */
2395         if (oct->fn_list.enable_io_queues(oct)) {
2396                 dev_err(&oct->pci_dev->dev, "enabling io queues failed\n");
2397                 return 1;
2398         }
2399
2400         atomic_set(&oct->status, OCT_DEV_IO_QUEUES_DONE);
2401
2402         atomic_set(&oct->status, OCT_DEV_HOST_OK);
2403
2404         /* Send Credit for Octeon Output queues. Credits are always sent after
2405          * the output queue is enabled.
2406          */
2407         for (j = 0; j < oct->num_oqs; j++)
2408                 writel(oct->droq[j]->max_count, oct->droq[j]->pkts_credit_reg);
2409
2410         /* Packets can start arriving on the output queues from this point. */
2411
2412         atomic_set(&oct->status, OCT_DEV_CORE_OK);
2413
2414         atomic_set(&oct->status, OCT_DEV_RUNNING);
2415
2416         if (liquidio_init_nic_module(oct))
2417                 return 1;
2418
2419         return 0;
2420 }
2421
2422 static int __init liquidio_vf_init(void)
2423 {
2424         octeon_init_device_list(0);
2425         return pci_register_driver(&liquidio_vf_pci_driver);
2426 }
2427
2428 static void __exit liquidio_vf_exit(void)
2429 {
2430         pci_unregister_driver(&liquidio_vf_pci_driver);
2431
2432         pr_info("LiquidIO_VF network module is now unloaded\n");
2433 }
2434
2435 module_init(liquidio_vf_init);
2436 module_exit(liquidio_vf_exit);