drivers/scsi/qedf/qedf_main.c

   1 /*
   2  *  QLogic FCoE Offload Driver
   3  *  Copyright (c) 2016-2017 Cavium Inc.
   4  *
   5  *  This software is available under the terms of the GNU General Public License
   6  *  (GPL) Version 2, available from the file COPYING in the main directory of
   7  *  this source tree.
   8  */
   9 #include <linux/init.h>
  10 #include <linux/kernel.h>
  11 #include <linux/module.h>
  12 #include <linux/pci.h>
  13 #include <linux/device.h>
  14 #include <linux/highmem.h>
  15 #include <linux/crc32.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/list.h>
  18 #include <linux/kthread.h>
  19 #include <scsi/libfc.h>
  20 #include <scsi/scsi_host.h>
  21 #include <linux/if_ether.h>
  22 #include <linux/if_vlan.h>
  23 #include <linux/cpu.h>
  24 #include "qedf.h"
  25 #include <uapi/linux/pci_regs.h>
  26
  27 const struct qed_fcoe_ops *qed_ops;
  28
  29 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id);
  30 static void qedf_remove(struct pci_dev *pdev);
  31
  32 extern struct qedf_debugfs_ops qedf_debugfs_ops;
  33 extern struct file_operations qedf_dbg_fops;
  34
  35 /*
  36  * Driver module parameters.
  37  */
  38 static unsigned int qedf_dev_loss_tmo = 60;
  39 module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO);
  40 MODULE_PARM_DESC(dev_loss_tmo,  " dev_loss_tmo setting for attached "
  41         "remote ports (default 60)");
  42
  43 uint qedf_debug = QEDF_LOG_INFO;
  44 module_param_named(debug, qedf_debug, uint, S_IRUGO);
  45 MODULE_PARM_DESC(qedf_debug, " Debug mask. Pass '1' to enable default debugging"
  46         " mask");
  47
  48 static uint qedf_fipvlan_retries = 30;
  49 module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO);
  50 MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt "
  51         "before giving up (default 30)");
  52
  53 static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN;
  54 module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO);
  55 MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails "
  56         "(default 1002).");
  57
  58 static uint qedf_default_prio = QEDF_DEFAULT_PRIO;
  59 module_param_named(default_prio, qedf_default_prio, int, S_IRUGO);
  60 MODULE_PARM_DESC(default_prio, " Default 802.1q priority for FIP and FCoE"
  61         " traffic (default 3).");
  62
  63 uint qedf_dump_frames;
  64 module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR);
  65 MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames "
  66         "(default off)");
  67
  68 static uint qedf_queue_depth;
  69 module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO);
  70 MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered "
  71         "by the qedf driver. Default is 0 (use OS default).");
  72
  73 uint qedf_io_tracing;
  74 module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR);
  75 MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions "
  76         "into trace buffer. (default off).");
  77
  78 static uint qedf_max_lun = MAX_FIBRE_LUNS;
  79 module_param_named(max_lun, qedf_max_lun, int, S_IRUGO);
  80 MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver "
  81         "supports. (default 0xffffffff)");
  82
  83 uint qedf_link_down_tmo;
  84 module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO);
  85 MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the "
  86         "link is down by N seconds.");
  87
  88 bool qedf_retry_delay;
  89 module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR);
  90 MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry "
  91         "delay handling (default off).");
  92
  93 static uint qedf_dp_module;
  94 module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO);
  95 MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed "
  96         "qed module during probe.");
  97
  98 static uint qedf_dp_level = QED_LEVEL_NOTICE;
  99 module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO);
 100 MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module  "
 101         "during probe (0-3: 0 more verbose).");
 102
 103 struct workqueue_struct *qedf_io_wq;
 104
 105 static struct fcoe_percpu_s qedf_global;
 106 static DEFINE_SPINLOCK(qedf_global_lock);
 107
 108 static struct kmem_cache *qedf_io_work_cache;
 109
 110 void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id)
 111 {
 112         qedf->vlan_id = vlan_id;
 113         qedf->vlan_id |= qedf_default_prio << VLAN_PRIO_SHIFT;
 114         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Setting vlan_id=%04x "
 115                    "prio=%d.\n", vlan_id, qedf_default_prio);
 116 }
 117
 118 /* Returns true if we have a valid vlan, false otherwise */
 119 static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf)
 120 {
 121         int rc;
 122
 123         if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
 124                 QEDF_ERR(&(qedf->dbg_ctx), "Link not up.\n");
 125                 return  false;
 126         }
 127
 128         while (qedf->fipvlan_retries--) {
 129                 if (qedf->vlan_id > 0)
 130                         return true;
 131                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 132                            "Retry %d.\n", qedf->fipvlan_retries);
 133                 init_completion(&qedf->fipvlan_compl);
 134                 qedf_fcoe_send_vlan_req(qedf);
 135                 rc = wait_for_completion_timeout(&qedf->fipvlan_compl,
 136                     1 * HZ);
 137                 if (rc > 0) {
 138                         fcoe_ctlr_link_up(&qedf->ctlr);
 139                         return true;
 140                 }
 141         }
 142
 143         return false;
 144 }
 145
 146 static void qedf_handle_link_update(struct work_struct *work)
 147 {
 148         struct qedf_ctx *qedf =
 149             container_of(work, struct qedf_ctx, link_update.work);
 150         int rc;
 151
 152         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Entered.\n");
 153
 154         if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
 155                 rc = qedf_initiate_fipvlan_req(qedf);
 156                 if (rc)
 157                         return;
 158                 /*
 159                  * If we get here then we never received a repsonse to our
 160                  * fip vlan request so set the vlan_id to the default and
 161                  * tell FCoE that the link is up
 162                  */
 163                 QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN "
 164                            "response, falling back to default VLAN %d.\n",
 165                            qedf_fallback_vlan);
 166                 qedf_set_vlan_id(qedf, QEDF_FALLBACK_VLAN);
 167
 168                 /*
 169                  * Zero out data_src_addr so we'll update it with the new
 170                  * lport port_id
 171                  */
 172                 eth_zero_addr(qedf->data_src_addr);
 173                 fcoe_ctlr_link_up(&qedf->ctlr);
 174         } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
 175                 /*
 176                  * If we hit here and link_down_tmo_valid is still 1 it means
 177                  * that link_down_tmo timed out so set it to 0 to make sure any
 178                  * other readers have accurate state.
 179                  */
 180                 atomic_set(&qedf->link_down_tmo_valid, 0);
 181                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 182                     "Calling fcoe_ctlr_link_down().\n");
 183                 fcoe_ctlr_link_down(&qedf->ctlr);
 184                 qedf_wait_for_upload(qedf);
 185                 /* Reset the number of FIP VLAN retries */
 186                 qedf->fipvlan_retries = qedf_fipvlan_retries;
 187         }
 188 }
 189
 190 static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp,
 191         void *arg)
 192 {
 193         struct fc_exch *exch = fc_seq_exch(seq);
 194         struct fc_lport *lport = exch->lp;
 195         struct qedf_ctx *qedf = lport_priv(lport);
 196
 197         if (!qedf) {
 198                 QEDF_ERR(NULL, "qedf is NULL.\n");
 199                 return;
 200         }
 201
 202         /*
 203          * If ERR_PTR is set then don't try to stat anything as it will cause
 204          * a crash when we access fp.
 205          */
 206         if (IS_ERR(fp)) {
 207                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
 208                     "fp has IS_ERR() set.\n");
 209                 goto skip_stat;
 210         }
 211
 212         /* Log stats for FLOGI reject */
 213         if (fc_frame_payload_op(fp) == ELS_LS_RJT)
 214                 qedf->flogi_failed++;
 215
 216         /* Complete flogi_compl so we can proceed to sending ADISCs */
 217         complete(&qedf->flogi_compl);
 218
 219 skip_stat:
 220         /* Report response to libfc */
 221         fc_lport_flogi_resp(seq, fp, lport);
 222 }
 223
 224 static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did,
 225         struct fc_frame *fp, unsigned int op,
 226         void (*resp)(struct fc_seq *,
 227         struct fc_frame *,
 228         void *),
 229         void *arg, u32 timeout)
 230 {
 231         struct qedf_ctx *qedf = lport_priv(lport);
 232
 233         /*
 234          * Intercept FLOGI for statistic purposes. Note we use the resp
 235          * callback to tell if this is really a flogi.
 236          */
 237         if (resp == fc_lport_flogi_resp) {
 238                 qedf->flogi_cnt++;
 239                 return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp,
 240                     arg, timeout);
 241         }
 242
 243         return fc_elsct_send(lport, did, fp, op, resp, arg, timeout);
 244 }
 245
 246 int qedf_send_flogi(struct qedf_ctx *qedf)
 247 {
 248         struct fc_lport *lport;
 249         struct fc_frame *fp;
 250
 251         lport = qedf->lport;
 252
 253         if (!lport->tt.elsct_send)
 254                 return -EINVAL;
 255
 256         fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi));
 257         if (!fp) {
 258                 QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n");
 259                 return -ENOMEM;
 260         }
 261
 262         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
 263             "Sending FLOGI to reestablish session with switch.\n");
 264         lport->tt.elsct_send(lport, FC_FID_FLOGI, fp,
 265             ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov);
 266
 267         init_completion(&qedf->flogi_compl);
 268
 269         return 0;
 270 }
 271
 272 struct qedf_tmp_rdata_item {
 273         struct fc_rport_priv *rdata;
 274         struct list_head list;
 275 };
 276
 277 /*
 278  * This function is called if link_down_tmo is in use.  If we get a link up and
 279  * link_down_tmo has not expired then use just FLOGI/ADISC to recover our
 280  * sessions with targets.  Otherwise, just call fcoe_ctlr_link_up().
 281  */
 282 static void qedf_link_recovery(struct work_struct *work)
 283 {
 284         struct qedf_ctx *qedf =
 285             container_of(work, struct qedf_ctx, link_recovery.work);
 286         struct qedf_rport *fcport;
 287         struct fc_rport_priv *rdata;
 288         struct qedf_tmp_rdata_item *rdata_item, *tmp_rdata_item;
 289         bool rc;
 290         int retries = 30;
 291         int rval, i;
 292         struct list_head rdata_login_list;
 293
 294         INIT_LIST_HEAD(&rdata_login_list);
 295
 296         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 297             "Link down tmo did not expire.\n");
 298
 299         /*
 300          * Essentially reset the fcoe_ctlr here without affecting the state
 301          * of the libfc structs.
 302          */
 303         qedf->ctlr.state = FIP_ST_LINK_WAIT;
 304         fcoe_ctlr_link_down(&qedf->ctlr);
 305
 306         /*
 307          * Bring the link up before we send the fipvlan request so libfcoe
 308          * can select a new fcf in parallel
 309          */
 310         fcoe_ctlr_link_up(&qedf->ctlr);
 311
 312         /* Since the link when down and up to verify which vlan we're on */
 313         qedf->fipvlan_retries = qedf_fipvlan_retries;
 314         rc = qedf_initiate_fipvlan_req(qedf);
 315         if (!rc)
 316                 return;
 317
 318         /*
 319          * We need to wait for an FCF to be selected due to the
 320          * fcoe_ctlr_link_up other the FLOGI will be rejected.
 321          */
 322         while (retries > 0) {
 323                 if (qedf->ctlr.sel_fcf) {
 324                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 325                             "FCF reselected, proceeding with FLOGI.\n");
 326                         break;
 327                 }
 328                 msleep(500);
 329                 retries--;
 330         }
 331
 332         if (retries < 1) {
 333                 QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for "
 334                     "FCF selection.\n");
 335                 return;
 336         }
 337
 338         rval = qedf_send_flogi(qedf);
 339         if (rval)
 340                 return;
 341
 342         /* Wait for FLOGI completion before proceeding with sending ADISCs */
 343         i = wait_for_completion_timeout(&qedf->flogi_compl,
 344             qedf->lport->r_a_tov);
 345         if (i == 0) {
 346                 QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n");
 347                 return;
 348         }
 349
 350         /*
 351          * Call lport->tt.rport_login which will cause libfc to send an
 352          * ADISC since the rport is in state ready.
 353          */
 354         rcu_read_lock();
 355         list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
 356                 rdata = fcport->rdata;
 357                 if (rdata == NULL)
 358                         continue;
 359                 rdata_item = kzalloc(sizeof(struct qedf_tmp_rdata_item),
 360                     GFP_ATOMIC);
 361                 if (!rdata_item)
 362                         continue;
 363                 if (kref_get_unless_zero(&rdata->kref)) {
 364                         rdata_item->rdata = rdata;
 365                         list_add(&rdata_item->list, &rdata_login_list);
 366                 } else
 367                         kfree(rdata_item);
 368         }
 369         rcu_read_unlock();
 370         /*
 371          * Do the fc_rport_login outside of the rcu lock so we don't take a
 372          * mutex in an atomic context.
 373          */
 374         list_for_each_entry_safe(rdata_item, tmp_rdata_item, &rdata_login_list,
 375             list) {
 376                 list_del(&rdata_item->list);
 377                 fc_rport_login(rdata_item->rdata);
 378                 kref_put(&rdata_item->rdata->kref, fc_rport_destroy);
 379                 kfree(rdata_item);
 380         }
 381 }
 382
 383 static void qedf_update_link_speed(struct qedf_ctx *qedf,
 384         struct qed_link_output *link)
 385 {
 386         struct fc_lport *lport = qedf->lport;
 387
 388         lport->link_speed = FC_PORTSPEED_UNKNOWN;
 389         lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN;
 390
 391         /* Set fc_host link speed */
 392         switch (link->speed) {
 393         case 10000:
 394                 lport->link_speed = FC_PORTSPEED_10GBIT;
 395                 break;
 396         case 25000:
 397                 lport->link_speed = FC_PORTSPEED_25GBIT;
 398                 break;
 399         case 40000:
 400                 lport->link_speed = FC_PORTSPEED_40GBIT;
 401                 break;
 402         case 50000:
 403                 lport->link_speed = FC_PORTSPEED_50GBIT;
 404                 break;
 405         case 100000:
 406                 lport->link_speed = FC_PORTSPEED_100GBIT;
 407                 break;
 408         default:
 409                 lport->link_speed = FC_PORTSPEED_UNKNOWN;
 410                 break;
 411         }
 412
 413         /*
 414          * Set supported link speed by querying the supported
 415          * capabilities of the link.
 416          */
 417         if (link->supported_caps & SUPPORTED_10000baseKR_Full)
 418                 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT;
 419         if (link->supported_caps & SUPPORTED_25000baseKR_Full)
 420                 lport->link_supported_speeds |= FC_PORTSPEED_25GBIT;
 421         if (link->supported_caps & SUPPORTED_40000baseLR4_Full)
 422                 lport->link_supported_speeds |= FC_PORTSPEED_40GBIT;
 423         if (link->supported_caps & SUPPORTED_50000baseKR2_Full)
 424                 lport->link_supported_speeds |= FC_PORTSPEED_50GBIT;
 425         if (link->supported_caps & SUPPORTED_100000baseKR4_Full)
 426                 lport->link_supported_speeds |= FC_PORTSPEED_100GBIT;
 427         fc_host_supported_speeds(lport->host) = lport->link_supported_speeds;
 428 }
 429
 430 static void qedf_link_update(void *dev, struct qed_link_output *link)
 431 {
 432         struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
 433
 434         if (link->link_up) {
 435                 QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n",
 436                     link->speed / 1000);
 437
 438                 /* Cancel any pending link down work */
 439                 cancel_delayed_work(&qedf->link_update);
 440
 441                 atomic_set(&qedf->link_state, QEDF_LINK_UP);
 442                 qedf_update_link_speed(qedf, link);
 443
 444                 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) {
 445                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 446                              "DCBx done.\n");
 447                         if (atomic_read(&qedf->link_down_tmo_valid) > 0)
 448                                 queue_delayed_work(qedf->link_update_wq,
 449                                     &qedf->link_recovery, 0);
 450                         else
 451                                 queue_delayed_work(qedf->link_update_wq,
 452                                     &qedf->link_update, 0);
 453                         atomic_set(&qedf->link_down_tmo_valid, 0);
 454                 }
 455
 456         } else {
 457                 QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n");
 458
 459                 atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
 460                 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
 461                 /*
 462                  * Flag that we're waiting for the link to come back up before
 463                  * informing the fcoe layer of the event.
 464                  */
 465                 if (qedf_link_down_tmo > 0) {
 466                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 467                             "Starting link down tmo.\n");
 468                         atomic_set(&qedf->link_down_tmo_valid, 1);
 469                 }
 470                 qedf->vlan_id  = 0;
 471                 qedf_update_link_speed(qedf, link);
 472                 queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 473                     qedf_link_down_tmo * HZ);
 474         }
 475 }
 476
 477
 478 static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type)
 479 {
 480         struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
 481
 482         QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe "
 483             "prio=%d.\n", get->operational.valid, get->operational.enabled,
 484             get->operational.app_prio.fcoe);
 485
 486         if (get->operational.enabled && get->operational.valid) {
 487                 /* If DCBX was already negotiated on link up then just exit */
 488                 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) {
 489                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 490                             "DCBX already set on link up.\n");
 491                         return;
 492                 }
 493
 494                 atomic_set(&qedf->dcbx, QEDF_DCBX_DONE);
 495
 496                 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
 497                         if (atomic_read(&qedf->link_down_tmo_valid) > 0)
 498                                 queue_delayed_work(qedf->link_update_wq,
 499                                     &qedf->link_recovery, 0);
 500                         else
 501                                 queue_delayed_work(qedf->link_update_wq,
 502                                     &qedf->link_update, 0);
 503                         atomic_set(&qedf->link_down_tmo_valid, 0);
 504                 }
 505         }
 506
 507 }
 508
 509 static u32 qedf_get_login_failures(void *cookie)
 510 {
 511         struct qedf_ctx *qedf;
 512
 513         qedf = (struct qedf_ctx *)cookie;
 514         return qedf->flogi_failed;
 515 }
 516
 517 static struct qed_fcoe_cb_ops qedf_cb_ops = {
 518         {
 519                 .link_update = qedf_link_update,
 520                 .dcbx_aen = qedf_dcbx_handler,
 521         }
 522 };
 523
 524 /*
 525  * Various transport templates.
 526  */
 527
 528 static struct scsi_transport_template *qedf_fc_transport_template;
 529 static struct scsi_transport_template *qedf_fc_vport_transport_template;
 530
 531 /*
 532  * SCSI EH handlers
 533  */
 534 static int qedf_eh_abort(struct scsi_cmnd *sc_cmd)
 535 {
 536         struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
 537         struct fc_rport_libfc_priv *rp = rport->dd_data;
 538         struct qedf_rport *fcport;
 539         struct fc_lport *lport;
 540         struct qedf_ctx *qedf;
 541         struct qedf_ioreq *io_req;
 542         int rc = FAILED;
 543         int rval;
 544
 545         if (fc_remote_port_chkready(rport)) {
 546                 QEDF_ERR(NULL, "rport not ready\n");
 547                 goto out;
 548         }
 549
 550         lport = shost_priv(sc_cmd->device->host);
 551         qedf = (struct qedf_ctx *)lport_priv(lport);
 552
 553         if ((lport->state != LPORT_ST_READY) || !(lport->link_up)) {
 554                 QEDF_ERR(&(qedf->dbg_ctx), "link not ready.\n");
 555                 goto out;
 556         }
 557
 558         fcport = (struct qedf_rport *)&rp[1];
 559
 560         io_req = (struct qedf_ioreq *)sc_cmd->SCp.ptr;
 561         if (!io_req) {
 562                 QEDF_ERR(&(qedf->dbg_ctx), "io_req is NULL.\n");
 563                 rc = SUCCESS;
 564                 goto out;
 565         }
 566
 567         if (!test_bit(QEDF_CMD_OUTSTANDING, &io_req->flags) ||
 568             test_bit(QEDF_CMD_IN_CLEANUP, &io_req->flags) ||
 569             test_bit(QEDF_CMD_IN_ABORT, &io_req->flags)) {
 570                 QEDF_ERR(&(qedf->dbg_ctx), "io_req xid=0x%x already in "
 571                           "cleanup or abort processing or already "
 572                           "completed.\n", io_req->xid);
 573                 rc = SUCCESS;
 574                 goto out;
 575         }
 576
 577         QEDF_ERR(&(qedf->dbg_ctx), "Aborting io_req sc_cmd=%p xid=0x%x "
 578                   "fp_idx=%d.\n", sc_cmd, io_req->xid, io_req->fp_idx);
 579
 580         if (qedf->stop_io_on_error) {
 581                 qedf_stop_all_io(qedf);
 582                 rc = SUCCESS;
 583                 goto out;
 584         }
 585
 586         init_completion(&io_req->abts_done);
 587         rval = qedf_initiate_abts(io_req, true);
 588         if (rval) {
 589                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n");
 590                 goto out;
 591         }
 592
 593         wait_for_completion(&io_req->abts_done);
 594
 595         if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS ||
 596             io_req->event == QEDF_IOREQ_EV_ABORT_FAILED ||
 597             io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) {
 598                 /*
 599                  * If we get a reponse to the abort this is success from
 600                  * the perspective that all references to the command have
 601                  * been removed from the driver and firmware
 602                  */
 603                 rc = SUCCESS;
 604         } else {
 605                 /* If the abort and cleanup failed then return a failure */
 606                 rc = FAILED;
 607         }
 608
 609         if (rc == SUCCESS)
 610                 QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n",
 611                           io_req->xid);
 612         else
 613                 QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n",
 614                           io_req->xid);
 615
 616 out:
 617         return rc;
 618 }
 619
 620 static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd)
 621 {
 622         QEDF_ERR(NULL, "TARGET RESET Issued...");
 623         return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET);
 624 }
 625
 626 static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd)
 627 {
 628         QEDF_ERR(NULL, "LUN RESET Issued...\n");
 629         return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET);
 630 }
 631
 632 static int qedf_eh_bus_reset(struct scsi_cmnd *sc_cmd)
 633 {
 634         QEDF_ERR(NULL, "BUS RESET Issued...\n");
 635         /*
 636          * Essentially a no-op but return SUCCESS to prevent
 637          * unnecessary escalation to the host reset handler.
 638          */
 639         return SUCCESS;
 640 }
 641
 642 void qedf_wait_for_upload(struct qedf_ctx *qedf)
 643 {
 644         while (1) {
 645                 if (atomic_read(&qedf->num_offloads))
 646                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 647                             "Waiting for all uploads to complete.\n");
 648                 else
 649                         break;
 650                 msleep(500);
 651         }
 652 }
 653
 654 /* Performs soft reset of qedf_ctx by simulating a link down/up */
 655 static void qedf_ctx_soft_reset(struct fc_lport *lport)
 656 {
 657         struct qedf_ctx *qedf;
 658
 659         if (lport->vport) {
 660                 QEDF_ERR(NULL, "Cannot issue host reset on NPIV port.\n");
 661                 return;
 662         }
 663
 664         qedf = lport_priv(lport);
 665
 666         /* For host reset, essentially do a soft link up/down */
 667         atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
 668         atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
 669         queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 670             0);
 671         qedf_wait_for_upload(qedf);
 672         atomic_set(&qedf->link_state, QEDF_LINK_UP);
 673         qedf->vlan_id  = 0;
 674         queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 675             0);
 676 }
 677
 678 /* Reset the host by gracefully logging out and then logging back in */
 679 static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd)
 680 {
 681         struct fc_lport *lport;
 682         struct qedf_ctx *qedf;
 683
 684         lport = shost_priv(sc_cmd->device->host);
 685         qedf = lport_priv(lport);
 686
 687         if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN ||
 688             test_bit(QEDF_UNLOADING, &qedf->flags))
 689                 return FAILED;
 690
 691         QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued...");
 692
 693         qedf_ctx_soft_reset(lport);
 694
 695         return SUCCESS;
 696 }
 697
 698 static int qedf_slave_configure(struct scsi_device *sdev)
 699 {
 700         if (qedf_queue_depth) {
 701                 scsi_change_queue_depth(sdev, qedf_queue_depth);
 702         }
 703
 704         return 0;
 705 }
 706
 707 static struct scsi_host_template qedf_host_template = {
 708         .module         = THIS_MODULE,
 709         .name           = QEDF_MODULE_NAME,
 710         .this_id        = -1,
 711         .cmd_per_lun    = 32,
 712         .use_clustering = ENABLE_CLUSTERING,
 713         .max_sectors    = 0xffff,
 714         .queuecommand   = qedf_queuecommand,
 715         .shost_attrs    = qedf_host_attrs,
 716         .eh_abort_handler       = qedf_eh_abort,
 717         .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */
 718         .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */
 719         .eh_bus_reset_handler = qedf_eh_bus_reset,
 720         .eh_host_reset_handler  = qedf_eh_host_reset,
 721         .slave_configure        = qedf_slave_configure,
 722         .dma_boundary = QED_HW_DMA_BOUNDARY,
 723         .sg_tablesize = QEDF_MAX_BDS_PER_CMD,
 724         .can_queue = FCOE_PARAMS_NUM_TASKS,
 725         .change_queue_depth = scsi_change_queue_depth,
 726 };
 727
 728 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen)
 729 {
 730         int rc;
 731
 732         spin_lock(&qedf_global_lock);
 733         rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global);
 734         spin_unlock(&qedf_global_lock);
 735
 736         return rc;
 737 }
 738
 739 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id)
 740 {
 741         struct qedf_rport *fcport;
 742         struct fc_rport_priv *rdata;
 743
 744         rcu_read_lock();
 745         list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
 746                 rdata = fcport->rdata;
 747                 if (rdata == NULL)
 748                         continue;
 749                 if (rdata->ids.port_id == port_id) {
 750                         rcu_read_unlock();
 751                         return fcport;
 752                 }
 753         }
 754         rcu_read_unlock();
 755
 756         /* Return NULL to caller to let them know fcport was not found */
 757         return NULL;
 758 }
 759
 760 /* Transmits an ELS frame over an offloaded session */
 761 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp)
 762 {
 763         struct fc_frame_header *fh;
 764         int rc = 0;
 765
 766         fh = fc_frame_header_get(fp);
 767         if ((fh->fh_type == FC_TYPE_ELS) &&
 768             (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
 769                 switch (fc_frame_payload_op(fp)) {
 770                 case ELS_ADISC:
 771                         qedf_send_adisc(fcport, fp);
 772                         rc = 1;
 773                         break;
 774                 }
 775         }
 776
 777         return rc;
 778 }
 779
 780 /**
 781  * qedf_xmit - qedf FCoE frame transmit function
 782  *
 783  */
 784 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp)
 785 {
 786         struct fc_lport         *base_lport;
 787         struct qedf_ctx         *qedf;
 788         struct ethhdr           *eh;
 789         struct fcoe_crc_eof     *cp;
 790         struct sk_buff          *skb;
 791         struct fc_frame_header  *fh;
 792         struct fcoe_hdr         *hp;
 793         u8                      sof, eof;
 794         u32                     crc;
 795         unsigned int            hlen, tlen, elen;
 796         int                     wlen;
 797         struct fc_stats         *stats;
 798         struct fc_lport *tmp_lport;
 799         struct fc_lport *vn_port = NULL;
 800         struct qedf_rport *fcport;
 801         int rc;
 802         u16 vlan_tci = 0;
 803
 804         qedf = (struct qedf_ctx *)lport_priv(lport);
 805
 806         fh = fc_frame_header_get(fp);
 807         skb = fp_skb(fp);
 808
 809         /* Filter out traffic to other NPIV ports on the same host */
 810         if (lport->vport)
 811                 base_lport = shost_priv(vport_to_shost(lport->vport));
 812         else
 813                 base_lport = lport;
 814
 815         /* Flag if the destination is the base port */
 816         if (base_lport->port_id == ntoh24(fh->fh_d_id)) {
 817                 vn_port = base_lport;
 818         } else {
 819                 /* Got through the list of vports attached to the base_lport
 820                  * and see if we have a match with the destination address.
 821                  */
 822                 list_for_each_entry(tmp_lport, &base_lport->vports, list) {
 823                         if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) {
 824                                 vn_port = tmp_lport;
 825                                 break;
 826                         }
 827                 }
 828         }
 829         if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) {
 830                 struct fc_rport_priv *rdata = NULL;
 831
 832                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
 833                     "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id));
 834                 kfree_skb(skb);
 835                 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id));
 836                 if (rdata)
 837                         rdata->retries = lport->max_rport_retry_count;
 838                 return -EINVAL;
 839         }
 840         /* End NPIV filtering */
 841
 842         if (!qedf->ctlr.sel_fcf) {
 843                 kfree_skb(skb);
 844                 return 0;
 845         }
 846
 847         if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) {
 848                 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n");
 849                 kfree_skb(skb);
 850                 return 0;
 851         }
 852
 853         if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
 854                 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n");
 855                 kfree_skb(skb);
 856                 return 0;
 857         }
 858
 859         if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
 860                 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb))
 861                         return 0;
 862         }
 863
 864         /* Check to see if this needs to be sent on an offloaded session */
 865         fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
 866
 867         if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
 868                 rc = qedf_xmit_l2_frame(fcport, fp);
 869                 /*
 870                  * If the frame was successfully sent over the middle path
 871                  * then do not try to also send it over the LL2 path
 872                  */
 873                 if (rc)
 874                         return 0;
 875         }
 876
 877         sof = fr_sof(fp);
 878         eof = fr_eof(fp);
 879
 880         elen = sizeof(struct ethhdr);
 881         hlen = sizeof(struct fcoe_hdr);
 882         tlen = sizeof(struct fcoe_crc_eof);
 883         wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
 884
 885         skb->ip_summed = CHECKSUM_NONE;
 886         crc = fcoe_fc_crc(fp);
 887
 888         /* copy port crc and eof to the skb buff */
 889         if (skb_is_nonlinear(skb)) {
 890                 skb_frag_t *frag;
 891
 892                 if (qedf_get_paged_crc_eof(skb, tlen)) {
 893                         kfree_skb(skb);
 894                         return -ENOMEM;
 895                 }
 896                 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
 897                 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset;
 898         } else {
 899                 cp = skb_put(skb, tlen);
 900         }
 901
 902         memset(cp, 0, sizeof(*cp));
 903         cp->fcoe_eof = eof;
 904         cp->fcoe_crc32 = cpu_to_le32(~crc);
 905         if (skb_is_nonlinear(skb)) {
 906                 kunmap_atomic(cp);
 907                 cp = NULL;
 908         }
 909
 910
 911         /* adjust skb network/transport offsets to match mac/fcoe/port */
 912         skb_push(skb, elen + hlen);
 913         skb_reset_mac_header(skb);
 914         skb_reset_network_header(skb);
 915         skb->mac_len = elen;
 916         skb->protocol = htons(ETH_P_FCOE);
 917
 918         __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id);
 919
 920         /* fill up mac and fcoe headers */
 921         eh = eth_hdr(skb);
 922         eh->h_proto = htons(ETH_P_FCOE);
 923         if (qedf->ctlr.map_dest)
 924                 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
 925         else
 926                 /* insert GW address */
 927                 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr);
 928
 929         /* Set the source MAC address */
 930         fc_fcoe_set_mac(eh->h_source, fh->fh_s_id);
 931
 932         hp = (struct fcoe_hdr *)(eh + 1);
 933         memset(hp, 0, sizeof(*hp));
 934         if (FC_FCOE_VER)
 935                 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
 936         hp->fcoe_sof = sof;
 937
 938         /*update tx stats */
 939         stats = per_cpu_ptr(lport->stats, get_cpu());
 940         stats->TxFrames++;
 941         stats->TxWords += wlen;
 942         put_cpu();
 943
 944         /* Get VLAN ID from skb for printing purposes */
 945         __vlan_hwaccel_get_tag(skb, &vlan_tci);
 946
 947         /* send down to lld */
 948         fr_dev(fp) = lport;
 949         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: "
 950             "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n",
 951             ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type,
 952             vlan_tci);
 953         if (qedf_dump_frames)
 954                 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
 955                     1, skb->data, skb->len, false);
 956         qed_ops->ll2->start_xmit(qedf->cdev, skb);
 957
 958         return 0;
 959 }
 960
 961 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
 962 {
 963         int rval = 0;
 964         u32 *pbl;
 965         dma_addr_t page;
 966         int num_pages;
 967
 968         /* Calculate appropriate queue and PBL sizes */
 969         fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
 970         fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE);
 971         fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) *
 972             sizeof(void *);
 973         fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE;
 974
 975         fcport->sq = dma_zalloc_coherent(&qedf->pdev->dev,
 976             fcport->sq_mem_size, &fcport->sq_dma, GFP_KERNEL);
 977         if (!fcport->sq) {
 978                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n");
 979                 rval = 1;
 980                 goto out;
 981         }
 982
 983         fcport->sq_pbl = dma_zalloc_coherent(&qedf->pdev->dev,
 984             fcport->sq_pbl_size, &fcport->sq_pbl_dma, GFP_KERNEL);
 985         if (!fcport->sq_pbl) {
 986                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n");
 987                 rval = 1;
 988                 goto out_free_sq;
 989         }
 990
 991         /* Create PBL */
 992         num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE;
 993         page = fcport->sq_dma;
 994         pbl = (u32 *)fcport->sq_pbl;
 995
 996         while (num_pages--) {
 997                 *pbl = U64_LO(page);
 998                 pbl++;
 999                 *pbl = U64_HI(page);
1000                 pbl++;
1001                 page += QEDF_PAGE_SIZE;
1002         }
1003
1004         return rval;
1005
1006 out_free_sq:
1007         dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq,
1008             fcport->sq_dma);
1009 out:
1010         return rval;
1011 }
1012
1013 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1014 {
1015         if (fcport->sq_pbl)
1016                 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size,
1017                     fcport->sq_pbl, fcport->sq_pbl_dma);
1018         if (fcport->sq)
1019                 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1020                     fcport->sq, fcport->sq_dma);
1021 }
1022
1023 static int qedf_offload_connection(struct qedf_ctx *qedf,
1024         struct qedf_rport *fcport)
1025 {
1026         struct qed_fcoe_params_offload conn_info;
1027         u32 port_id;
1028         u8 lport_src_id[3];
1029         int rval;
1030         uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe));
1031
1032         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection "
1033                    "portid=%06x.\n", fcport->rdata->ids.port_id);
1034         rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle,
1035             &fcport->fw_cid, &fcport->p_doorbell);
1036         if (rval) {
1037                 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection "
1038                            "for portid=%06x.\n", fcport->rdata->ids.port_id);
1039                 rval = 1; /* For some reason qed returns 0 on failure here */
1040                 goto out;
1041         }
1042
1043         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x "
1044                    "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id,
1045                    fcport->fw_cid, fcport->handle);
1046
1047         memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload));
1048
1049         /* Fill in the offload connection info */
1050         conn_info.sq_pbl_addr = fcport->sq_pbl_dma;
1051
1052         conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl);
1053         conn_info.sq_next_page_addr =
1054             (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8));
1055
1056         /* Need to use our FCoE MAC for the offload session */
1057         port_id = fc_host_port_id(qedf->lport->host);
1058         lport_src_id[2] = (port_id & 0x000000FF);
1059         lport_src_id[1] = (port_id & 0x0000FF00) >> 8;
1060         lport_src_id[0] = (port_id & 0x00FF0000) >> 16;
1061         fc_fcoe_set_mac(conn_info.src_mac, lport_src_id);
1062
1063         ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr);
1064
1065         conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size;
1066         conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov / 20;
1067         conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */
1068         conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size;
1069
1070         /* Set VLAN data */
1071         conn_info.vlan_tag = qedf->vlan_id <<
1072             FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT;
1073         conn_info.vlan_tag |=
1074             qedf_default_prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT;
1075         conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK <<
1076             FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT);
1077
1078         /* Set host port source id */
1079         port_id = fc_host_port_id(qedf->lport->host);
1080         fcport->sid = port_id;
1081         conn_info.s_id.addr_hi = (port_id & 0x000000FF);
1082         conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1083         conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1084
1085         conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq;
1086
1087         /* Set remote port destination id */
1088         port_id = fcport->rdata->rport->port_id;
1089         conn_info.d_id.addr_hi = (port_id & 0x000000FF);
1090         conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1091         conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1092
1093         conn_info.def_q_idx = 0; /* Default index for send queue? */
1094
1095         /* Set FC-TAPE specific flags if needed */
1096         if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) {
1097                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN,
1098                     "Enable CONF, REC for portid=%06x.\n",
1099                     fcport->rdata->ids.port_id);
1100                 conn_info.flags |= 1 <<
1101                     FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT;
1102                 conn_info.flags |=
1103                     ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
1104                     FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT;
1105         }
1106
1107         rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info);
1108         if (rval) {
1109                 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection "
1110                            "for portid=%06x.\n", fcport->rdata->ids.port_id);
1111                 goto out_free_conn;
1112         } else
1113                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload "
1114                            "succeeded portid=%06x total_sqe=%d.\n",
1115                            fcport->rdata->ids.port_id, total_sqe);
1116
1117         spin_lock_init(&fcport->rport_lock);
1118         atomic_set(&fcport->free_sqes, total_sqe);
1119         return 0;
1120 out_free_conn:
1121         qed_ops->release_conn(qedf->cdev, fcport->handle);
1122 out:
1123         return rval;
1124 }
1125
1126 #define QEDF_TERM_BUFF_SIZE             10
1127 static void qedf_upload_connection(struct qedf_ctx *qedf,
1128         struct qedf_rport *fcport)
1129 {
1130         void *term_params;
1131         dma_addr_t term_params_dma;
1132
1133         /* Term params needs to be a DMA coherent buffer as qed shared the
1134          * physical DMA address with the firmware. The buffer may be used in
1135          * the receive path so we may eventually have to move this.
1136          */
1137         term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE,
1138                 &term_params_dma, GFP_KERNEL);
1139
1140         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection "
1141                    "port_id=%06x.\n", fcport->rdata->ids.port_id);
1142
1143         qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma);
1144         qed_ops->release_conn(qedf->cdev, fcport->handle);
1145
1146         dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params,
1147             term_params_dma);
1148 }
1149
1150 static void qedf_cleanup_fcport(struct qedf_ctx *qedf,
1151         struct qedf_rport *fcport)
1152 {
1153         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n",
1154             fcport->rdata->ids.port_id);
1155
1156         /* Flush any remaining i/o's before we upload the connection */
1157         qedf_flush_active_ios(fcport, -1);
1158
1159         if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags))
1160                 qedf_upload_connection(qedf, fcport);
1161         qedf_free_sq(qedf, fcport);
1162         fcport->rdata = NULL;
1163         fcport->qedf = NULL;
1164 }
1165
1166 /**
1167  * This event_callback is called after successful completion of libfc
1168  * initiated target login. qedf can proceed with initiating the session
1169  * establishment.
1170  */
1171 static void qedf_rport_event_handler(struct fc_lport *lport,
1172                                 struct fc_rport_priv *rdata,
1173                                 enum fc_rport_event event)
1174 {
1175         struct qedf_ctx *qedf = lport_priv(lport);
1176         struct fc_rport *rport = rdata->rport;
1177         struct fc_rport_libfc_priv *rp;
1178         struct qedf_rport *fcport;
1179         u32 port_id;
1180         int rval;
1181         unsigned long flags;
1182
1183         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, "
1184                    "port_id = 0x%x\n", event, rdata->ids.port_id);
1185
1186         switch (event) {
1187         case RPORT_EV_READY:
1188                 if (!rport) {
1189                         QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n");
1190                         break;
1191                 }
1192
1193                 rp = rport->dd_data;
1194                 fcport = (struct qedf_rport *)&rp[1];
1195                 fcport->qedf = qedf;
1196
1197                 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) {
1198                         QEDF_ERR(&(qedf->dbg_ctx), "Not offloading "
1199                             "portid=0x%x as max number of offloaded sessions "
1200                             "reached.\n", rdata->ids.port_id);
1201                         return;
1202                 }
1203
1204                 /*
1205                  * Don't try to offload the session again. Can happen when we
1206                  * get an ADISC
1207                  */
1208                 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1209                         QEDF_WARN(&(qedf->dbg_ctx), "Session already "
1210                                    "offloaded, portid=0x%x.\n",
1211                                    rdata->ids.port_id);
1212                         return;
1213                 }
1214
1215                 if (rport->port_id == FC_FID_DIR_SERV) {
1216                         /*
1217                          * qedf_rport structure doesn't exist for
1218                          * directory server.
1219                          * We should not come here, as lport will
1220                          * take care of fabric login
1221                          */
1222                         QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not "
1223                             "exist for dir server port_id=%x\n",
1224                             rdata->ids.port_id);
1225                         break;
1226                 }
1227
1228                 if (rdata->spp_type != FC_TYPE_FCP) {
1229                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1230                             "Not offloading since spp type isn't FCP\n");
1231                         break;
1232                 }
1233                 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
1234                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1235                             "Not FCP target so not offloading\n");
1236                         break;
1237                 }
1238
1239                 fcport->rdata = rdata;
1240                 fcport->rport = rport;
1241
1242                 rval = qedf_alloc_sq(qedf, fcport);
1243                 if (rval) {
1244                         qedf_cleanup_fcport(qedf, fcport);
1245                         break;
1246                 }
1247
1248                 /* Set device type */
1249                 if (rdata->flags & FC_RP_FLAGS_RETRY &&
1250                     rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET &&
1251                     !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) {
1252                         fcport->dev_type = QEDF_RPORT_TYPE_TAPE;
1253                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1254                             "portid=%06x is a TAPE device.\n",
1255                             rdata->ids.port_id);
1256                 } else {
1257                         fcport->dev_type = QEDF_RPORT_TYPE_DISK;
1258                 }
1259
1260                 rval = qedf_offload_connection(qedf, fcport);
1261                 if (rval) {
1262                         qedf_cleanup_fcport(qedf, fcport);
1263                         break;
1264                 }
1265
1266                 /* Add fcport to list of qedf_ctx list of offloaded ports */
1267                 spin_lock_irqsave(&qedf->hba_lock, flags);
1268                 list_add_rcu(&fcport->peers, &qedf->fcports);
1269                 spin_unlock_irqrestore(&qedf->hba_lock, flags);
1270
1271                 /*
1272                  * Set the session ready bit to let everyone know that this
1273                  * connection is ready for I/O
1274                  */
1275                 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags);
1276                 atomic_inc(&qedf->num_offloads);
1277
1278                 break;
1279         case RPORT_EV_LOGO:
1280         case RPORT_EV_FAILED:
1281         case RPORT_EV_STOP:
1282                 port_id = rdata->ids.port_id;
1283                 if (port_id == FC_FID_DIR_SERV)
1284                         break;
1285
1286                 if (!rport) {
1287                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1288                             "port_id=%x - rport notcreated Yet!!\n", port_id);
1289                         break;
1290                 }
1291                 rp = rport->dd_data;
1292                 /*
1293                  * Perform session upload. Note that rdata->peers is already
1294                  * removed from disc->rports list before we get this event.
1295                  */
1296                 fcport = (struct qedf_rport *)&rp[1];
1297
1298                 /* Only free this fcport if it is offloaded already */
1299                 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1300                         set_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags);
1301                         qedf_cleanup_fcport(qedf, fcport);
1302
1303                         /*
1304                          * Remove fcport to list of qedf_ctx list of offloaded
1305                          * ports
1306                          */
1307                         spin_lock_irqsave(&qedf->hba_lock, flags);
1308                         list_del_rcu(&fcport->peers);
1309                         spin_unlock_irqrestore(&qedf->hba_lock, flags);
1310
1311                         clear_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1312                             &fcport->flags);
1313                         atomic_dec(&qedf->num_offloads);
1314                 }
1315
1316                 break;
1317
1318         case RPORT_EV_NONE:
1319                 break;
1320         }
1321 }
1322
1323 static void qedf_abort_io(struct fc_lport *lport)
1324 {
1325         /* NO-OP but need to fill in the template */
1326 }
1327
1328 static void qedf_fcp_cleanup(struct fc_lport *lport)
1329 {
1330         /*
1331          * NO-OP but need to fill in template to prevent a NULL
1332          * function pointer dereference during link down. I/Os
1333          * will be flushed when port is uploaded.
1334          */
1335 }
1336
1337 static struct libfc_function_template qedf_lport_template = {
1338         .frame_send             = qedf_xmit,
1339         .fcp_abort_io           = qedf_abort_io,
1340         .fcp_cleanup            = qedf_fcp_cleanup,
1341         .rport_event_callback   = qedf_rport_event_handler,
1342         .elsct_send             = qedf_elsct_send,
1343 };
1344
1345 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf)
1346 {
1347         fcoe_ctlr_init(&qedf->ctlr, FIP_ST_AUTO);
1348
1349         qedf->ctlr.send = qedf_fip_send;
1350         qedf->ctlr.update_mac = qedf_update_src_mac;
1351         qedf->ctlr.get_src_addr = qedf_get_src_mac;
1352         ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac);
1353 }
1354
1355 static void qedf_setup_fdmi(struct qedf_ctx *qedf)
1356 {
1357         struct fc_lport *lport = qedf->lport;
1358         struct fc_host_attrs *fc_host = shost_to_fc_host(lport->host);
1359         u8 buf[8];
1360         int i, pos;
1361
1362         /*
1363          * fdmi_enabled needs to be set for libfc to execute FDMI registration.
1364          */
1365         lport->fdmi_enabled = 1;
1366
1367         /*
1368          * Setup the necessary fc_host attributes to that will be used to fill
1369          * in the FDMI information.
1370          */
1371
1372         /* Get the PCI-e Device Serial Number Capability */
1373         pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN);
1374         if (pos) {
1375                 pos += 4;
1376                 for (i = 0; i < 8; i++)
1377                         pci_read_config_byte(qedf->pdev, pos + i, &buf[i]);
1378
1379                 snprintf(fc_host->serial_number,
1380                     sizeof(fc_host->serial_number),
1381                     "%02X%02X%02X%02X%02X%02X%02X%02X",
1382                     buf[7], buf[6], buf[5], buf[4],
1383                     buf[3], buf[2], buf[1], buf[0]);
1384         } else
1385                 snprintf(fc_host->serial_number,
1386                     sizeof(fc_host->serial_number), "Unknown");
1387
1388         snprintf(fc_host->manufacturer,
1389             sizeof(fc_host->manufacturer), "%s", "Cavium Inc.");
1390
1391         snprintf(fc_host->model, sizeof(fc_host->model), "%s", "QL41000");
1392
1393         snprintf(fc_host->model_description, sizeof(fc_host->model_description),
1394             "%s", "QLogic FastLinQ QL41000 Series 10/25/40/50GGbE Controller"
1395             "(FCoE)");
1396
1397         snprintf(fc_host->hardware_version, sizeof(fc_host->hardware_version),
1398             "Rev %d", qedf->pdev->revision);
1399
1400         snprintf(fc_host->driver_version, sizeof(fc_host->driver_version),
1401             "%s", QEDF_VERSION);
1402
1403         snprintf(fc_host->firmware_version, sizeof(fc_host->firmware_version),
1404             "%d.%d.%d.%d", FW_MAJOR_VERSION, FW_MINOR_VERSION,
1405             FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
1406 }
1407
1408 static int qedf_lport_setup(struct qedf_ctx *qedf)
1409 {
1410         struct fc_lport *lport = qedf->lport;
1411
1412         lport->link_up = 0;
1413         lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1414         lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1415         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1416             FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1417         lport->boot_time = jiffies;
1418         lport->e_d_tov = 2 * 1000;
1419         lport->r_a_tov = 10 * 1000;
1420
1421         /* Set NPIV support */
1422         lport->does_npiv = 1;
1423         fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV;
1424
1425         fc_set_wwnn(lport, qedf->wwnn);
1426         fc_set_wwpn(lport, qedf->wwpn);
1427
1428         fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0);
1429
1430         /* Allocate the exchange manager */
1431         fc_exch_mgr_alloc(lport, FC_CLASS_3, qedf->max_scsi_xid + 1,
1432             qedf->max_els_xid, NULL);
1433
1434         if (fc_lport_init_stats(lport))
1435                 return -ENOMEM;
1436
1437         /* Finish lport config */
1438         fc_lport_config(lport);
1439
1440         /* Set max frame size */
1441         fc_set_mfs(lport, QEDF_MFS);
1442         fc_host_maxframe_size(lport->host) = lport->mfs;
1443
1444         /* Set default dev_loss_tmo based on module parameter */
1445         fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo;
1446
1447         /* Set symbolic node name */
1448         snprintf(fc_host_symbolic_name(lport->host), 256,
1449             "QLogic %s v%s", QEDF_MODULE_NAME, QEDF_VERSION);
1450
1451         qedf_setup_fdmi(qedf);
1452
1453         return 0;
1454 }
1455
1456 /*
1457  * NPIV functions
1458  */
1459
1460 static int qedf_vport_libfc_config(struct fc_vport *vport,
1461         struct fc_lport *lport)
1462 {
1463         lport->link_up = 0;
1464         lport->qfull = 0;
1465         lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1466         lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1467         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1468             FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1469         lport->boot_time = jiffies;
1470         lport->e_d_tov = 2 * 1000;
1471         lport->r_a_tov = 10 * 1000;
1472         lport->does_npiv = 1; /* Temporary until we add NPIV support */
1473
1474         /* Allocate stats for vport */
1475         if (fc_lport_init_stats(lport))
1476                 return -ENOMEM;
1477
1478         /* Finish lport config */
1479         fc_lport_config(lport);
1480
1481         /* offload related configuration */
1482         lport->crc_offload = 0;
1483         lport->seq_offload = 0;
1484         lport->lro_enabled = 0;
1485         lport->lro_xid = 0;
1486         lport->lso_max = 0;
1487
1488         return 0;
1489 }
1490
1491 static int qedf_vport_create(struct fc_vport *vport, bool disabled)
1492 {
1493         struct Scsi_Host *shost = vport_to_shost(vport);
1494         struct fc_lport *n_port = shost_priv(shost);
1495         struct fc_lport *vn_port;
1496         struct qedf_ctx *base_qedf = lport_priv(n_port);
1497         struct qedf_ctx *vport_qedf;
1498
1499         char buf[32];
1500         int rc = 0;
1501
1502         rc = fcoe_validate_vport_create(vport);
1503         if (rc) {
1504                 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1505                 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, "
1506                            "WWPN (0x%s) already exists.\n", buf);
1507                 goto err1;
1508         }
1509
1510         if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) {
1511                 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport "
1512                            "because link is not up.\n");
1513                 rc = -EIO;
1514                 goto err1;
1515         }
1516
1517         vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx));
1518         if (!vn_port) {
1519                 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport "
1520                            "for vport.\n");
1521                 rc = -ENOMEM;
1522                 goto err1;
1523         }
1524
1525         fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1526         QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n",
1527             buf);
1528
1529         /* Copy some fields from base_qedf */
1530         vport_qedf = lport_priv(vn_port);
1531         memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx));
1532
1533         /* Set qedf data specific to this vport */
1534         vport_qedf->lport = vn_port;
1535         /* Use same hba_lock as base_qedf */
1536         vport_qedf->hba_lock = base_qedf->hba_lock;
1537         vport_qedf->pdev = base_qedf->pdev;
1538         vport_qedf->cmd_mgr = base_qedf->cmd_mgr;
1539         init_completion(&vport_qedf->flogi_compl);
1540         INIT_LIST_HEAD(&vport_qedf->fcports);
1541
1542         rc = qedf_vport_libfc_config(vport, vn_port);
1543         if (rc) {
1544                 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory "
1545                     "for lport stats.\n");
1546                 goto err2;
1547         }
1548
1549         fc_set_wwnn(vn_port, vport->node_name);
1550         fc_set_wwpn(vn_port, vport->port_name);
1551         vport_qedf->wwnn = vn_port->wwnn;
1552         vport_qedf->wwpn = vn_port->wwpn;
1553
1554         vn_port->host->transportt = qedf_fc_vport_transport_template;
1555         vn_port->host->can_queue = QEDF_MAX_ELS_XID;
1556         vn_port->host->max_lun = qedf_max_lun;
1557         vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD;
1558         vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN;
1559
1560         rc = scsi_add_host(vn_port->host, &vport->dev);
1561         if (rc) {
1562                 QEDF_WARN(&(base_qedf->dbg_ctx), "Error adding Scsi_Host.\n");
1563                 goto err2;
1564         }
1565
1566         /* Set default dev_loss_tmo based on module parameter */
1567         fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo;
1568
1569         /* Init libfc stuffs */
1570         memcpy(&vn_port->tt, &qedf_lport_template,
1571                 sizeof(qedf_lport_template));
1572         fc_exch_init(vn_port);
1573         fc_elsct_init(vn_port);
1574         fc_lport_init(vn_port);
1575         fc_disc_init(vn_port);
1576         fc_disc_config(vn_port, vn_port);
1577
1578
1579         /* Allocate the exchange manager */
1580         shost = vport_to_shost(vport);
1581         n_port = shost_priv(shost);
1582         fc_exch_mgr_list_clone(n_port, vn_port);
1583
1584         /* Set max frame size */
1585         fc_set_mfs(vn_port, QEDF_MFS);
1586
1587         fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN;
1588
1589         if (disabled) {
1590                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1591         } else {
1592                 vn_port->boot_time = jiffies;
1593                 fc_fabric_login(vn_port);
1594                 fc_vport_setlink(vn_port);
1595         }
1596
1597         QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n",
1598                    vn_port);
1599
1600         /* Set up debug context for vport */
1601         vport_qedf->dbg_ctx.host_no = vn_port->host->host_no;
1602         vport_qedf->dbg_ctx.pdev = base_qedf->pdev;
1603
1604 err2:
1605         scsi_host_put(vn_port->host);
1606 err1:
1607         return rc;
1608 }
1609
1610 static int qedf_vport_destroy(struct fc_vport *vport)
1611 {
1612         struct Scsi_Host *shost = vport_to_shost(vport);
1613         struct fc_lport *n_port = shost_priv(shost);
1614         struct fc_lport *vn_port = vport->dd_data;
1615
1616         mutex_lock(&n_port->lp_mutex);
1617         list_del(&vn_port->list);
1618         mutex_unlock(&n_port->lp_mutex);
1619
1620         fc_fabric_logoff(vn_port);
1621         fc_lport_destroy(vn_port);
1622
1623         /* Detach from scsi-ml */
1624         fc_remove_host(vn_port->host);
1625         scsi_remove_host(vn_port->host);
1626
1627         /*
1628          * Only try to release the exchange manager if the vn_port
1629          * configuration is complete.
1630          */
1631         if (vn_port->state == LPORT_ST_READY)
1632                 fc_exch_mgr_free(vn_port);
1633
1634         /* Free memory used by statistical counters */
1635         fc_lport_free_stats(vn_port);
1636
1637         /* Release Scsi_Host */
1638         if (vn_port->host)
1639                 scsi_host_put(vn_port->host);
1640
1641         return 0;
1642 }
1643
1644 static int qedf_vport_disable(struct fc_vport *vport, bool disable)
1645 {
1646         struct fc_lport *lport = vport->dd_data;
1647
1648         if (disable) {
1649                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1650                 fc_fabric_logoff(lport);
1651         } else {
1652                 lport->boot_time = jiffies;
1653                 fc_fabric_login(lport);
1654                 fc_vport_setlink(lport);
1655         }
1656         return 0;
1657 }
1658
1659 /*
1660  * During removal we need to wait for all the vports associated with a port
1661  * to be destroyed so we avoid a race condition where libfc is still trying
1662  * to reap vports while the driver remove function has already reaped the
1663  * driver contexts associated with the physical port.
1664  */
1665 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf)
1666 {
1667         struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host);
1668
1669         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
1670             "Entered.\n");
1671         while (fc_host->npiv_vports_inuse > 0) {
1672                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
1673                     "Waiting for all vports to be reaped.\n");
1674                 msleep(1000);
1675         }
1676 }
1677
1678 /**
1679  * qedf_fcoe_reset - Resets the fcoe
1680  *
1681  * @shost: shost the reset is from
1682  *
1683  * Returns: always 0
1684  */
1685 static int qedf_fcoe_reset(struct Scsi_Host *shost)
1686 {
1687         struct fc_lport *lport = shost_priv(shost);
1688
1689         qedf_ctx_soft_reset(lport);
1690         return 0;
1691 }
1692
1693 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host
1694         *shost)
1695 {
1696         struct fc_host_statistics *qedf_stats;
1697         struct fc_lport *lport = shost_priv(shost);
1698         struct qedf_ctx *qedf = lport_priv(lport);
1699         struct qed_fcoe_stats *fw_fcoe_stats;
1700
1701         qedf_stats = fc_get_host_stats(shost);
1702
1703         /* We don't collect offload stats for specific NPIV ports */
1704         if (lport->vport)
1705                 goto out;
1706
1707         fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL);
1708         if (!fw_fcoe_stats) {
1709                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for "
1710                     "fw_fcoe_stats.\n");
1711                 goto out;
1712         }
1713
1714         /* Query firmware for offload stats */
1715         qed_ops->get_stats(qedf->cdev, fw_fcoe_stats);
1716
1717         /*
1718          * The expectation is that we add our offload stats to the stats
1719          * being maintained by libfc each time the fc_get_host_status callback
1720          * is invoked. The additions are not carried over for each call to
1721          * the fc_get_host_stats callback.
1722          */
1723         qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt +
1724             fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt +
1725             fw_fcoe_stats->fcoe_tx_other_pkt_cnt;
1726         qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt +
1727             fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt +
1728             fw_fcoe_stats->fcoe_rx_other_pkt_cnt;
1729         qedf_stats->fcp_input_megabytes +=
1730             do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000);
1731         qedf_stats->fcp_output_megabytes +=
1732             do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000);
1733         qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4;
1734         qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4;
1735         qedf_stats->invalid_crc_count +=
1736             fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt;
1737         qedf_stats->dumped_frames =
1738             fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
1739         qedf_stats->error_frames +=
1740             fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
1741         qedf_stats->fcp_input_requests += qedf->input_requests;
1742         qedf_stats->fcp_output_requests += qedf->output_requests;
1743         qedf_stats->fcp_control_requests += qedf->control_requests;
1744         qedf_stats->fcp_packet_aborts += qedf->packet_aborts;
1745         qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures;
1746
1747         kfree(fw_fcoe_stats);
1748 out:
1749         return qedf_stats;
1750 }
1751
1752 static struct fc_function_template qedf_fc_transport_fn = {
1753         .show_host_node_name = 1,
1754         .show_host_port_name = 1,
1755         .show_host_supported_classes = 1,
1756         .show_host_supported_fc4s = 1,
1757         .show_host_active_fc4s = 1,
1758         .show_host_maxframe_size = 1,
1759
1760         .show_host_port_id = 1,
1761         .show_host_supported_speeds = 1,
1762         .get_host_speed = fc_get_host_speed,
1763         .show_host_speed = 1,
1764         .show_host_port_type = 1,
1765         .get_host_port_state = fc_get_host_port_state,
1766         .show_host_port_state = 1,
1767         .show_host_symbolic_name = 1,
1768
1769         /*
1770          * Tell FC transport to allocate enough space to store the backpointer
1771          * for the associate qedf_rport struct.
1772          */
1773         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
1774                                 sizeof(struct qedf_rport)),
1775         .show_rport_maxframe_size = 1,
1776         .show_rport_supported_classes = 1,
1777         .show_host_fabric_name = 1,
1778         .show_starget_node_name = 1,
1779         .show_starget_port_name = 1,
1780         .show_starget_port_id = 1,
1781         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
1782         .show_rport_dev_loss_tmo = 1,
1783         .get_fc_host_stats = qedf_fc_get_host_stats,
1784         .issue_fc_host_lip = qedf_fcoe_reset,
1785         .vport_create = qedf_vport_create,
1786         .vport_delete = qedf_vport_destroy,
1787         .vport_disable = qedf_vport_disable,
1788         .bsg_request = fc_lport_bsg_request,
1789 };
1790
1791 static struct fc_function_template qedf_fc_vport_transport_fn = {
1792         .show_host_node_name = 1,
1793         .show_host_port_name = 1,
1794         .show_host_supported_classes = 1,
1795         .show_host_supported_fc4s = 1,
1796         .show_host_active_fc4s = 1,
1797         .show_host_maxframe_size = 1,
1798         .show_host_port_id = 1,
1799         .show_host_supported_speeds = 1,
1800         .get_host_speed = fc_get_host_speed,
1801         .show_host_speed = 1,
1802         .show_host_port_type = 1,
1803         .get_host_port_state = fc_get_host_port_state,
1804         .show_host_port_state = 1,
1805         .show_host_symbolic_name = 1,
1806         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
1807                                 sizeof(struct qedf_rport)),
1808         .show_rport_maxframe_size = 1,
1809         .show_rport_supported_classes = 1,
1810         .show_host_fabric_name = 1,
1811         .show_starget_node_name = 1,
1812         .show_starget_port_name = 1,
1813         .show_starget_port_id = 1,
1814         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
1815         .show_rport_dev_loss_tmo = 1,
1816         .get_fc_host_stats = fc_get_host_stats,
1817         .issue_fc_host_lip = qedf_fcoe_reset,
1818         .bsg_request = fc_lport_bsg_request,
1819 };
1820
1821 static bool qedf_fp_has_work(struct qedf_fastpath *fp)
1822 {
1823         struct qedf_ctx *qedf = fp->qedf;
1824         struct global_queue *que;
1825         struct qed_sb_info *sb_info = fp->sb_info;
1826         struct status_block *sb = sb_info->sb_virt;
1827         u16 prod_idx;
1828
1829         /* Get the pointer to the global CQ this completion is on */
1830         que = qedf->global_queues[fp->sb_id];
1831
1832         /* Be sure all responses have been written to PI */
1833         rmb();
1834
1835         /* Get the current firmware producer index */
1836         prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
1837
1838         return (que->cq_prod_idx != prod_idx);
1839 }
1840
1841 /*
1842  * Interrupt handler code.
1843  */
1844
1845 /* Process completion queue and copy CQE contents for deferred processesing
1846  *
1847  * Return true if we should wake the I/O thread, false if not.
1848  */
1849 static bool qedf_process_completions(struct qedf_fastpath *fp)
1850 {
1851         struct qedf_ctx *qedf = fp->qedf;
1852         struct qed_sb_info *sb_info = fp->sb_info;
1853         struct status_block *sb = sb_info->sb_virt;
1854         struct global_queue *que;
1855         u16 prod_idx;
1856         struct fcoe_cqe *cqe;
1857         struct qedf_io_work *io_work;
1858         int num_handled = 0;
1859         unsigned int cpu;
1860         struct qedf_ioreq *io_req = NULL;
1861         u16 xid;
1862         u16 new_cqes;
1863         u32 comp_type;
1864
1865         /* Get the current firmware producer index */
1866         prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
1867
1868         /* Get the pointer to the global CQ this completion is on */
1869         que = qedf->global_queues[fp->sb_id];
1870
1871         /* Calculate the amount of new elements since last processing */
1872         new_cqes = (prod_idx >= que->cq_prod_idx) ?
1873             (prod_idx - que->cq_prod_idx) :
1874             0x10000 - que->cq_prod_idx + prod_idx;
1875
1876         /* Save producer index */
1877         que->cq_prod_idx = prod_idx;
1878
1879         while (new_cqes) {
1880                 fp->completions++;
1881                 num_handled++;
1882                 cqe = &que->cq[que->cq_cons_idx];
1883
1884                 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
1885                     FCOE_CQE_CQE_TYPE_MASK;
1886
1887                 /*
1888                  * Process unsolicited CQEs directly in the interrupt handler
1889                  * sine we need the fastpath ID
1890                  */
1891                 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) {
1892                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL,
1893                            "Unsolicated CQE.\n");
1894                         qedf_process_unsol_compl(qedf, fp->sb_id, cqe);
1895                         /*
1896                          * Don't add a work list item.  Increment consumer
1897                          * consumer index and move on.
1898                          */
1899                         goto inc_idx;
1900                 }
1901
1902                 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
1903                 io_req = &qedf->cmd_mgr->cmds[xid];
1904
1905                 /*
1906                  * Figure out which percpu thread we should queue this I/O
1907                  * on.
1908                  */
1909                 if (!io_req)
1910                         /* If there is not io_req assocated with this CQE
1911                          * just queue it on CPU 0
1912                          */
1913                         cpu = 0;
1914                 else {
1915                         cpu = io_req->cpu;
1916                         io_req->int_cpu = smp_processor_id();
1917                 }
1918
1919                 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC);
1920                 if (!io_work) {
1921                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate "
1922                                    "work for I/O completion.\n");
1923                         continue;
1924                 }
1925                 memset(io_work, 0, sizeof(struct qedf_io_work));
1926
1927                 INIT_WORK(&io_work->work, qedf_fp_io_handler);
1928
1929                 /* Copy contents of CQE for deferred processing */
1930                 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe));
1931
1932                 io_work->qedf = fp->qedf;
1933                 io_work->fp = NULL; /* Only used for unsolicited frames */
1934
1935                 queue_work_on(cpu, qedf_io_wq, &io_work->work);
1936
1937 inc_idx:
1938                 que->cq_cons_idx++;
1939                 if (que->cq_cons_idx == fp->cq_num_entries)
1940                         que->cq_cons_idx = 0;
1941                 new_cqes--;
1942         }
1943
1944         return true;
1945 }
1946
1947
1948 /* MSI-X fastpath handler code */
1949 static irqreturn_t qedf_msix_handler(int irq, void *dev_id)
1950 {
1951         struct qedf_fastpath *fp = dev_id;
1952
1953         if (!fp) {
1954                 QEDF_ERR(NULL, "fp is null.\n");
1955                 return IRQ_HANDLED;
1956         }
1957         if (!fp->sb_info) {
1958                 QEDF_ERR(NULL, "fp->sb_info in null.");
1959                 return IRQ_HANDLED;
1960         }
1961
1962         /*
1963          * Disable interrupts for this status block while we process new
1964          * completions
1965          */
1966         qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/);
1967
1968         while (1) {
1969                 qedf_process_completions(fp);
1970
1971                 if (qedf_fp_has_work(fp) == 0) {
1972                         /* Update the sb information */
1973                         qed_sb_update_sb_idx(fp->sb_info);
1974
1975                         /* Check for more work */
1976                         rmb();
1977
1978                         if (qedf_fp_has_work(fp) == 0) {
1979                                 /* Re-enable interrupts */
1980                                 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
1981                                 return IRQ_HANDLED;
1982                         }
1983                 }
1984         }
1985
1986         /* Do we ever want to break out of above loop? */
1987         return IRQ_HANDLED;
1988 }
1989
1990 /* simd handler for MSI/INTa */
1991 static void qedf_simd_int_handler(void *cookie)
1992 {
1993         /* Cookie is qedf_ctx struct */
1994         struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
1995
1996         QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf);
1997 }
1998
1999 #define QEDF_SIMD_HANDLER_NUM           0
2000 static void qedf_sync_free_irqs(struct qedf_ctx *qedf)
2001 {
2002         int i;
2003
2004         if (qedf->int_info.msix_cnt) {
2005                 for (i = 0; i < qedf->int_info.used_cnt; i++) {
2006                         synchronize_irq(qedf->int_info.msix[i].vector);
2007                         irq_set_affinity_hint(qedf->int_info.msix[i].vector,
2008                             NULL);
2009                         irq_set_affinity_notifier(qedf->int_info.msix[i].vector,
2010                             NULL);
2011                         free_irq(qedf->int_info.msix[i].vector,
2012                             &qedf->fp_array[i]);
2013                 }
2014         } else
2015                 qed_ops->common->simd_handler_clean(qedf->cdev,
2016                     QEDF_SIMD_HANDLER_NUM);
2017
2018         qedf->int_info.used_cnt = 0;
2019         qed_ops->common->set_fp_int(qedf->cdev, 0);
2020 }
2021
2022 static int qedf_request_msix_irq(struct qedf_ctx *qedf)
2023 {
2024         int i, rc, cpu;
2025
2026         cpu = cpumask_first(cpu_online_mask);
2027         for (i = 0; i < qedf->num_queues; i++) {
2028                 rc = request_irq(qedf->int_info.msix[i].vector,
2029                     qedf_msix_handler, 0, "qedf", &qedf->fp_array[i]);
2030
2031                 if (rc) {
2032                         QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n");
2033                         qedf_sync_free_irqs(qedf);
2034                         return rc;
2035                 }
2036
2037                 qedf->int_info.used_cnt++;
2038                 rc = irq_set_affinity_hint(qedf->int_info.msix[i].vector,
2039                     get_cpu_mask(cpu));
2040                 cpu = cpumask_next(cpu, cpu_online_mask);
2041         }
2042
2043         return 0;
2044 }
2045
2046 static int qedf_setup_int(struct qedf_ctx *qedf)
2047 {
2048         int rc = 0;
2049
2050         /*
2051          * Learn interrupt configuration
2052          */
2053         rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus());
2054         if (rc <= 0)
2055                 return 0;
2056
2057         rc  = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info);
2058         if (rc)
2059                 return 0;
2060
2061         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = "
2062                    "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt,
2063                    num_online_cpus());
2064
2065         if (qedf->int_info.msix_cnt)
2066                 return qedf_request_msix_irq(qedf);
2067
2068         qed_ops->common->simd_handler_config(qedf->cdev, &qedf,
2069             QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler);
2070         qedf->int_info.used_cnt = 1;
2071
2072         return 0;
2073 }
2074
2075 /* Main function for libfc frame reception */
2076 static void qedf_recv_frame(struct qedf_ctx *qedf,
2077         struct sk_buff *skb)
2078 {
2079         u32 fr_len;
2080         struct fc_lport *lport;
2081         struct fc_frame_header *fh;
2082         struct fcoe_crc_eof crc_eof;
2083         struct fc_frame *fp;
2084         u8 *mac = NULL;
2085         u8 *dest_mac = NULL;
2086         struct fcoe_hdr *hp;
2087         struct qedf_rport *fcport;
2088         struct fc_lport *vn_port;
2089         u32 f_ctl;
2090
2091         lport = qedf->lport;
2092         if (lport == NULL || lport->state == LPORT_ST_DISABLED) {
2093                 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n");
2094                 kfree_skb(skb);
2095                 return;
2096         }
2097
2098         if (skb_is_nonlinear(skb))
2099                 skb_linearize(skb);
2100         mac = eth_hdr(skb)->h_source;
2101         dest_mac = eth_hdr(skb)->h_dest;
2102
2103         /* Pull the header */
2104         hp = (struct fcoe_hdr *)skb->data;
2105         fh = (struct fc_frame_header *) skb_transport_header(skb);
2106         skb_pull(skb, sizeof(struct fcoe_hdr));
2107         fr_len = skb->len - sizeof(struct fcoe_crc_eof);
2108
2109         fp = (struct fc_frame *)skb;
2110         fc_frame_init(fp);
2111         fr_dev(fp) = lport;
2112         fr_sof(fp) = hp->fcoe_sof;
2113         if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
2114                 kfree_skb(skb);
2115                 return;
2116         }
2117         fr_eof(fp) = crc_eof.fcoe_eof;
2118         fr_crc(fp) = crc_eof.fcoe_crc32;
2119         if (pskb_trim(skb, fr_len)) {
2120                 kfree_skb(skb);
2121                 return;
2122         }
2123
2124         fh = fc_frame_header_get(fp);
2125
2126         /*
2127          * Invalid frame filters.
2128          */
2129
2130         if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
2131             fh->fh_type == FC_TYPE_FCP) {
2132                 /* Drop FCP data. We dont this in L2 path */
2133                 kfree_skb(skb);
2134                 return;
2135         }
2136         if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
2137             fh->fh_type == FC_TYPE_ELS) {
2138                 switch (fc_frame_payload_op(fp)) {
2139                 case ELS_LOGO:
2140                         if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
2141                                 /* drop non-FIP LOGO */
2142                                 kfree_skb(skb);
2143                                 return;
2144                         }
2145                         break;
2146                 }
2147         }
2148
2149         if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
2150                 /* Drop incoming ABTS */
2151                 kfree_skb(skb);
2152                 return;
2153         }
2154
2155         if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
2156                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2157                     "FC frame d_id mismatch with MAC %pM.\n", dest_mac);
2158                 return;
2159         }
2160
2161         if (qedf->ctlr.state) {
2162                 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) {
2163                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2164                             "Wrong source address: mac:%pM dest_addr:%pM.\n",
2165                             mac, qedf->ctlr.dest_addr);
2166                         kfree_skb(skb);
2167                         return;
2168                 }
2169         }
2170
2171         vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
2172
2173         /*
2174          * If the destination ID from the frame header does not match what we
2175          * have on record for lport and the search for a NPIV port came up
2176          * empty then this is not addressed to our port so simply drop it.
2177          */
2178         if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
2179                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2180                     "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n",
2181                     lport->port_id, ntoh24(fh->fh_d_id));
2182                 kfree_skb(skb);
2183                 return;
2184         }
2185
2186         f_ctl = ntoh24(fh->fh_f_ctl);
2187         if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) &&
2188             (f_ctl & FC_FC_EX_CTX)) {
2189                 /* Drop incoming ABTS response that has both SEQ/EX CTX set */
2190                 kfree_skb(skb);
2191                 return;
2192         }
2193
2194         /*
2195          * If a connection is uploading, drop incoming FCoE frames as there
2196          * is a small window where we could try to return a frame while libfc
2197          * is trying to clean things up.
2198          */
2199
2200         /* Get fcport associated with d_id if it exists */
2201         fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
2202
2203         if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
2204             &fcport->flags)) {
2205                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2206                     "Connection uploading, dropping fp=%p.\n", fp);
2207                 kfree_skb(skb);
2208                 return;
2209         }
2210
2211         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: "
2212             "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp,
2213             ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl,
2214             fh->fh_type);
2215         if (qedf_dump_frames)
2216                 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
2217                     1, skb->data, skb->len, false);
2218         fc_exch_recv(lport, fp);
2219 }
2220
2221 static void qedf_ll2_process_skb(struct work_struct *work)
2222 {
2223         struct qedf_skb_work *skb_work =
2224             container_of(work, struct qedf_skb_work, work);
2225         struct qedf_ctx *qedf = skb_work->qedf;
2226         struct sk_buff *skb = skb_work->skb;
2227         struct ethhdr *eh;
2228
2229         if (!qedf) {
2230                 QEDF_ERR(NULL, "qedf is NULL\n");
2231                 goto err_out;
2232         }
2233
2234         eh = (struct ethhdr *)skb->data;
2235
2236         /* Undo VLAN encapsulation */
2237         if (eh->h_proto == htons(ETH_P_8021Q)) {
2238                 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
2239                 eh = skb_pull(skb, VLAN_HLEN);
2240                 skb_reset_mac_header(skb);
2241         }
2242
2243         /*
2244          * Process either a FIP frame or FCoE frame based on the
2245          * protocol value.  If it's not either just drop the
2246          * frame.
2247          */
2248         if (eh->h_proto == htons(ETH_P_FIP)) {
2249                 qedf_fip_recv(qedf, skb);
2250                 goto out;
2251         } else if (eh->h_proto == htons(ETH_P_FCOE)) {
2252                 __skb_pull(skb, ETH_HLEN);
2253                 qedf_recv_frame(qedf, skb);
2254                 goto out;
2255         } else
2256                 goto err_out;
2257
2258 err_out:
2259         kfree_skb(skb);
2260 out:
2261         kfree(skb_work);
2262         return;
2263 }
2264
2265 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb,
2266         u32 arg1, u32 arg2)
2267 {
2268         struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2269         struct qedf_skb_work *skb_work;
2270
2271         skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC);
2272         if (!skb_work) {
2273                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so "
2274                            "dropping frame.\n");
2275                 kfree_skb(skb);
2276                 return 0;
2277         }
2278
2279         INIT_WORK(&skb_work->work, qedf_ll2_process_skb);
2280         skb_work->skb = skb;
2281         skb_work->qedf = qedf;
2282         queue_work(qedf->ll2_recv_wq, &skb_work->work);
2283
2284         return 0;
2285 }
2286
2287 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = {
2288         .rx_cb = qedf_ll2_rx,
2289         .tx_cb = NULL,
2290 };
2291
2292 /* Main thread to process I/O completions */
2293 void qedf_fp_io_handler(struct work_struct *work)
2294 {
2295         struct qedf_io_work *io_work =
2296             container_of(work, struct qedf_io_work, work);
2297         u32 comp_type;
2298
2299         /*
2300          * Deferred part of unsolicited CQE sends
2301          * frame to libfc.
2302          */
2303         comp_type = (io_work->cqe.cqe_data >>
2304             FCOE_CQE_CQE_TYPE_SHIFT) &
2305             FCOE_CQE_CQE_TYPE_MASK;
2306         if (comp_type == FCOE_UNSOLIC_CQE_TYPE &&
2307             io_work->fp)
2308                 fc_exch_recv(io_work->qedf->lport, io_work->fp);
2309         else
2310                 qedf_process_cqe(io_work->qedf, &io_work->cqe);
2311
2312         kfree(io_work);
2313 }
2314
2315 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf,
2316         struct qed_sb_info *sb_info, u16 sb_id)
2317 {
2318         struct status_block *sb_virt;
2319         dma_addr_t sb_phys;
2320         int ret;
2321
2322         sb_virt = dma_alloc_coherent(&qedf->pdev->dev,
2323             sizeof(struct status_block), &sb_phys, GFP_KERNEL);
2324
2325         if (!sb_virt) {
2326                 QEDF_ERR(&(qedf->dbg_ctx), "Status block allocation failed "
2327                           "for id = %d.\n", sb_id);
2328                 return -ENOMEM;
2329         }
2330
2331         ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys,
2332             sb_id, QED_SB_TYPE_STORAGE);
2333
2334         if (ret) {
2335                 QEDF_ERR(&(qedf->dbg_ctx), "Status block initialization "
2336                           "failed for id = %d.\n", sb_id);
2337                 return ret;
2338         }
2339
2340         return 0;
2341 }
2342
2343 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info)
2344 {
2345         if (sb_info->sb_virt)
2346                 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt),
2347                     (void *)sb_info->sb_virt, sb_info->sb_phys);
2348 }
2349
2350 static void qedf_destroy_sb(struct qedf_ctx *qedf)
2351 {
2352         int id;
2353         struct qedf_fastpath *fp = NULL;
2354
2355         for (id = 0; id < qedf->num_queues; id++) {
2356                 fp = &(qedf->fp_array[id]);
2357                 if (fp->sb_id == QEDF_SB_ID_NULL)
2358                         break;
2359                 qedf_free_sb(qedf, fp->sb_info);
2360                 kfree(fp->sb_info);
2361         }
2362         kfree(qedf->fp_array);
2363 }
2364
2365 static int qedf_prepare_sb(struct qedf_ctx *qedf)
2366 {
2367         int id;
2368         struct qedf_fastpath *fp;
2369         int ret;
2370
2371         qedf->fp_array =
2372             kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath),
2373                 GFP_KERNEL);
2374
2375         if (!qedf->fp_array) {
2376                 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation "
2377                           "failed.\n");
2378                 return -ENOMEM;
2379         }
2380
2381         for (id = 0; id < qedf->num_queues; id++) {
2382                 fp = &(qedf->fp_array[id]);
2383                 fp->sb_id = QEDF_SB_ID_NULL;
2384                 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL);
2385                 if (!fp->sb_info) {
2386                         QEDF_ERR(&(qedf->dbg_ctx), "SB info struct "
2387                                   "allocation failed.\n");
2388                         goto err;
2389                 }
2390                 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id);
2391                 if (ret) {
2392                         QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and "
2393                                   "initialization failed.\n");
2394                         goto err;
2395                 }
2396                 fp->sb_id = id;
2397                 fp->qedf = qedf;
2398                 fp->cq_num_entries =
2399                     qedf->global_queues[id]->cq_mem_size /
2400                     sizeof(struct fcoe_cqe);
2401         }
2402 err:
2403         return 0;
2404 }
2405
2406 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe)
2407 {
2408         u16 xid;
2409         struct qedf_ioreq *io_req;
2410         struct qedf_rport *fcport;
2411         u32 comp_type;
2412
2413         comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2414             FCOE_CQE_CQE_TYPE_MASK;
2415
2416         xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2417         io_req = &qedf->cmd_mgr->cmds[xid];
2418
2419         /* Completion not for a valid I/O anymore so just return */
2420         if (!io_req)
2421                 return;
2422
2423         fcport = io_req->fcport;
2424
2425         if (fcport == NULL) {
2426                 QEDF_ERR(&(qedf->dbg_ctx), "fcport is NULL.\n");
2427                 return;
2428         }
2429
2430         /*
2431          * Check that fcport is offloaded.  If it isn't then the spinlock
2432          * isn't valid and shouldn't be taken. We should just return.
2433          */
2434         if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
2435                 QEDF_ERR(&(qedf->dbg_ctx), "Session not offloaded yet.\n");
2436                 return;
2437         }
2438
2439
2440         switch (comp_type) {
2441         case FCOE_GOOD_COMPLETION_CQE_TYPE:
2442                 atomic_inc(&fcport->free_sqes);
2443                 switch (io_req->cmd_type) {
2444                 case QEDF_SCSI_CMD:
2445                         qedf_scsi_completion(qedf, cqe, io_req);
2446                         break;
2447                 case QEDF_ELS:
2448                         qedf_process_els_compl(qedf, cqe, io_req);
2449                         break;
2450                 case QEDF_TASK_MGMT_CMD:
2451                         qedf_process_tmf_compl(qedf, cqe, io_req);
2452                         break;
2453                 case QEDF_SEQ_CLEANUP:
2454                         qedf_process_seq_cleanup_compl(qedf, cqe, io_req);
2455                         break;
2456                 }
2457                 break;
2458         case FCOE_ERROR_DETECTION_CQE_TYPE:
2459                 atomic_inc(&fcport->free_sqes);
2460                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2461                     "Error detect CQE.\n");
2462                 qedf_process_error_detect(qedf, cqe, io_req);
2463                 break;
2464         case FCOE_EXCH_CLEANUP_CQE_TYPE:
2465                 atomic_inc(&fcport->free_sqes);
2466                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2467                     "Cleanup CQE.\n");
2468                 qedf_process_cleanup_compl(qedf, cqe, io_req);
2469                 break;
2470         case FCOE_ABTS_CQE_TYPE:
2471                 atomic_inc(&fcport->free_sqes);
2472                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2473                     "Abort CQE.\n");
2474                 qedf_process_abts_compl(qedf, cqe, io_req);
2475                 break;
2476         case FCOE_DUMMY_CQE_TYPE:
2477                 atomic_inc(&fcport->free_sqes);
2478                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2479                     "Dummy CQE.\n");
2480                 break;
2481         case FCOE_LOCAL_COMP_CQE_TYPE:
2482                 atomic_inc(&fcport->free_sqes);
2483                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2484                     "Local completion CQE.\n");
2485                 break;
2486         case FCOE_WARNING_CQE_TYPE:
2487                 atomic_inc(&fcport->free_sqes);
2488                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2489                     "Warning CQE.\n");
2490                 qedf_process_warning_compl(qedf, cqe, io_req);
2491                 break;
2492         case MAX_FCOE_CQE_TYPE:
2493                 atomic_inc(&fcport->free_sqes);
2494                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2495                     "Max FCoE CQE.\n");
2496                 break;
2497         default:
2498                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2499                     "Default CQE.\n");
2500                 break;
2501         }
2502 }
2503
2504 static void qedf_free_bdq(struct qedf_ctx *qedf)
2505 {
2506         int i;
2507
2508         if (qedf->bdq_pbl_list)
2509                 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE,
2510                     qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma);
2511
2512         if (qedf->bdq_pbl)
2513                 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size,
2514                     qedf->bdq_pbl, qedf->bdq_pbl_dma);
2515
2516         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2517                 if (qedf->bdq[i].buf_addr) {
2518                         dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE,
2519                             qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma);
2520                 }
2521         }
2522 }
2523
2524 static void qedf_free_global_queues(struct qedf_ctx *qedf)
2525 {
2526         int i;
2527         struct global_queue **gl = qedf->global_queues;
2528
2529         for (i = 0; i < qedf->num_queues; i++) {
2530                 if (!gl[i])
2531                         continue;
2532
2533                 if (gl[i]->cq)
2534                         dma_free_coherent(&qedf->pdev->dev,
2535                             gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma);
2536                 if (gl[i]->cq_pbl)
2537                         dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size,
2538                             gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
2539
2540                 kfree(gl[i]);
2541         }
2542
2543         qedf_free_bdq(qedf);
2544 }
2545
2546 static int qedf_alloc_bdq(struct qedf_ctx *qedf)
2547 {
2548         int i;
2549         struct scsi_bd *pbl;
2550         u64 *list;
2551         dma_addr_t page;
2552
2553         /* Alloc dma memory for BDQ buffers */
2554         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2555                 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev,
2556                     QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL);
2557                 if (!qedf->bdq[i].buf_addr) {
2558                         QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ "
2559                             "buffer %d.\n", i);
2560                         return -ENOMEM;
2561                 }
2562         }
2563
2564         /* Alloc dma memory for BDQ page buffer list */
2565         qedf->bdq_pbl_mem_size =
2566             QEDF_BDQ_SIZE * sizeof(struct scsi_bd);
2567         qedf->bdq_pbl_mem_size =
2568             ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE);
2569
2570         qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
2571             qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL);
2572         if (!qedf->bdq_pbl) {
2573                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n");
2574                 return -ENOMEM;
2575         }
2576
2577         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2578                   "BDQ PBL addr=0x%p dma=%pad\n",
2579                   qedf->bdq_pbl, &qedf->bdq_pbl_dma);
2580
2581         /*
2582          * Populate BDQ PBL with physical and virtual address of individual
2583          * BDQ buffers
2584          */
2585         pbl = (struct scsi_bd *)qedf->bdq_pbl;
2586         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2587                 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma));
2588                 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma));
2589                 pbl->opaque.hi = 0;
2590                 /* Opaque lo data is an index into the BDQ array */
2591                 pbl->opaque.lo = cpu_to_le32(i);
2592                 pbl++;
2593         }
2594
2595         /* Allocate list of PBL pages */
2596         qedf->bdq_pbl_list = dma_zalloc_coherent(&qedf->pdev->dev,
2597             QEDF_PAGE_SIZE, &qedf->bdq_pbl_list_dma, GFP_KERNEL);
2598         if (!qedf->bdq_pbl_list) {
2599                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n");
2600                 return -ENOMEM;
2601         }
2602
2603         /*
2604          * Now populate PBL list with pages that contain pointers to the
2605          * individual buffers.
2606          */
2607         qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size /
2608             QEDF_PAGE_SIZE;
2609         list = (u64 *)qedf->bdq_pbl_list;
2610         page = qedf->bdq_pbl_list_dma;
2611         for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) {
2612                 *list = qedf->bdq_pbl_dma;
2613                 list++;
2614                 page += QEDF_PAGE_SIZE;
2615         }
2616
2617         return 0;
2618 }
2619
2620 static int qedf_alloc_global_queues(struct qedf_ctx *qedf)
2621 {
2622         u32 *list;
2623         int i;
2624         int status = 0, rc;
2625         u32 *pbl;
2626         dma_addr_t page;
2627         int num_pages;
2628
2629         /* Allocate and map CQs, RQs */
2630         /*
2631          * Number of global queues (CQ / RQ). This should
2632          * be <= number of available MSIX vectors for the PF
2633          */
2634         if (!qedf->num_queues) {
2635                 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n");
2636                 return 1;
2637         }
2638
2639         /*
2640          * Make sure we allocated the PBL that will contain the physical
2641          * addresses of our queues
2642          */
2643         if (!qedf->p_cpuq) {
2644                 status = 1;
2645                 goto mem_alloc_failure;
2646         }
2647
2648         qedf->global_queues = kzalloc((sizeof(struct global_queue *)
2649             * qedf->num_queues), GFP_KERNEL);
2650         if (!qedf->global_queues) {
2651                 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global "
2652                           "queues array ptr memory\n");
2653                 return -ENOMEM;
2654         }
2655         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2656                    "qedf->global_queues=%p.\n", qedf->global_queues);
2657
2658         /* Allocate DMA coherent buffers for BDQ */
2659         rc = qedf_alloc_bdq(qedf);
2660         if (rc)
2661                 goto mem_alloc_failure;
2662
2663         /* Allocate a CQ and an associated PBL for each MSI-X vector */
2664         for (i = 0; i < qedf->num_queues; i++) {
2665                 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue),
2666                     GFP_KERNEL);
2667                 if (!qedf->global_queues[i]) {
2668                         QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate "
2669                                    "global queue %d.\n", i);
2670                         status = -ENOMEM;
2671                         goto mem_alloc_failure;
2672                 }
2673
2674                 qedf->global_queues[i]->cq_mem_size =
2675                     FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
2676                 qedf->global_queues[i]->cq_mem_size =
2677                     ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE);
2678
2679                 qedf->global_queues[i]->cq_pbl_size =
2680                     (qedf->global_queues[i]->cq_mem_size /
2681                     PAGE_SIZE) * sizeof(void *);
2682                 qedf->global_queues[i]->cq_pbl_size =
2683                     ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE);
2684
2685                 qedf->global_queues[i]->cq =
2686                     dma_zalloc_coherent(&qedf->pdev->dev,
2687                         qedf->global_queues[i]->cq_mem_size,
2688                         &qedf->global_queues[i]->cq_dma, GFP_KERNEL);
2689
2690                 if (!qedf->global_queues[i]->cq) {
2691                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n");
2692                         status = -ENOMEM;
2693                         goto mem_alloc_failure;
2694                 }
2695
2696                 qedf->global_queues[i]->cq_pbl =
2697                     dma_zalloc_coherent(&qedf->pdev->dev,
2698                         qedf->global_queues[i]->cq_pbl_size,
2699                         &qedf->global_queues[i]->cq_pbl_dma, GFP_KERNEL);
2700
2701                 if (!qedf->global_queues[i]->cq_pbl) {
2702                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n");
2703                         status = -ENOMEM;
2704                         goto mem_alloc_failure;
2705                 }
2706
2707                 /* Create PBL */
2708                 num_pages = qedf->global_queues[i]->cq_mem_size /
2709                     QEDF_PAGE_SIZE;
2710                 page = qedf->global_queues[i]->cq_dma;
2711                 pbl = (u32 *)qedf->global_queues[i]->cq_pbl;
2712
2713                 while (num_pages--) {
2714                         *pbl = U64_LO(page);
2715                         pbl++;
2716                         *pbl = U64_HI(page);
2717                         pbl++;
2718                         page += QEDF_PAGE_SIZE;
2719                 }
2720                 /* Set the initial consumer index for cq */
2721                 qedf->global_queues[i]->cq_cons_idx = 0;
2722         }
2723
2724         list = (u32 *)qedf->p_cpuq;
2725
2726         /*
2727          * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
2728          * CQ#1 PBL pointer, RQ#1 PBL pointer, etc.  Each PBL pointer points
2729          * to the physical address which contains an array of pointers to
2730          * the physical addresses of the specific queue pages.
2731          */
2732         for (i = 0; i < qedf->num_queues; i++) {
2733                 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma);
2734                 list++;
2735                 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma);
2736                 list++;
2737                 *list = U64_LO(0);
2738                 list++;
2739                 *list = U64_HI(0);
2740                 list++;
2741         }
2742
2743         return 0;
2744
2745 mem_alloc_failure:
2746         qedf_free_global_queues(qedf);
2747         return status;
2748 }
2749
2750 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf)
2751 {
2752         u8 sq_num_pbl_pages;
2753         u32 sq_mem_size;
2754         u32 cq_mem_size;
2755         u32 cq_num_entries;
2756         int rval;
2757
2758         /*
2759          * The number of completion queues/fastpath interrupts/status blocks
2760          * we allocation is the minimum off:
2761          *
2762          * Number of CPUs
2763          * Number allocated by qed for our PCI function
2764          */
2765         qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf);
2766
2767         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n",
2768                    qedf->num_queues);
2769
2770         qedf->p_cpuq = pci_alloc_consistent(qedf->pdev,
2771             qedf->num_queues * sizeof(struct qedf_glbl_q_params),
2772             &qedf->hw_p_cpuq);
2773
2774         if (!qedf->p_cpuq) {
2775                 QEDF_ERR(&(qedf->dbg_ctx), "pci_alloc_consistent failed.\n");
2776                 return 1;
2777         }
2778
2779         rval = qedf_alloc_global_queues(qedf);
2780         if (rval) {
2781                 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation "
2782                           "failed.\n");
2783                 return 1;
2784         }
2785
2786         /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */
2787         sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
2788         sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE);
2789         sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE);
2790
2791         /* Calculate CQ num entries */
2792         cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
2793         cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE);
2794         cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe);
2795
2796         memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params));
2797
2798         /* Setup the value for fcoe PF */
2799         qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS;
2800         qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS;
2801         qedf->pf_params.fcoe_pf_params.glbl_q_params_addr =
2802             (u64)qedf->hw_p_cpuq;
2803         qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages;
2804
2805         qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0;
2806
2807         qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries;
2808         qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues;
2809
2810         /* log_page_size: 12 for 4KB pages */
2811         qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE);
2812
2813         qedf->pf_params.fcoe_pf_params.mtu = 9000;
2814         qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI;
2815         qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI;
2816
2817         /* BDQ address and size */
2818         qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] =
2819             qedf->bdq_pbl_list_dma;
2820         qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] =
2821             qedf->bdq_pbl_list_num_entries;
2822         qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE;
2823
2824         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2825             "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n",
2826             qedf->bdq_pbl_list,
2827             qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0],
2828             qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]);
2829
2830         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2831             "cq_num_entries=%d.\n",
2832             qedf->pf_params.fcoe_pf_params.cq_num_entries);
2833
2834         return 0;
2835 }
2836
2837 /* Free DMA coherent memory for array of queue pointers we pass to qed */
2838 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf)
2839 {
2840         size_t size = 0;
2841
2842         if (qedf->p_cpuq) {
2843                 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params);
2844                 pci_free_consistent(qedf->pdev, size, qedf->p_cpuq,
2845                     qedf->hw_p_cpuq);
2846         }
2847
2848         qedf_free_global_queues(qedf);
2849
2850         if (qedf->global_queues)
2851                 kfree(qedf->global_queues);
2852 }
2853
2854 /*
2855  * PCI driver functions
2856  */
2857
2858 static const struct pci_device_id qedf_pci_tbl[] = {
2859         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) },
2860         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) },
2861         {0}
2862 };
2863 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl);
2864
2865 static struct pci_driver qedf_pci_driver = {
2866         .name = QEDF_MODULE_NAME,
2867         .id_table = qedf_pci_tbl,
2868         .probe = qedf_probe,
2869         .remove = qedf_remove,
2870 };
2871
2872 static int __qedf_probe(struct pci_dev *pdev, int mode)
2873 {
2874         int rc = -EINVAL;
2875         struct fc_lport *lport;
2876         struct qedf_ctx *qedf;
2877         struct Scsi_Host *host;
2878         bool is_vf = false;
2879         struct qed_ll2_params params;
2880         char host_buf[20];
2881         struct qed_link_params link_params;
2882         int status;
2883         void *task_start, *task_end;
2884         struct qed_slowpath_params slowpath_params;
2885         struct qed_probe_params qed_params;
2886         u16 tmp;
2887
2888         /*
2889          * When doing error recovery we didn't reap the lport so don't try
2890          * to reallocate it.
2891          */
2892         if (mode != QEDF_MODE_RECOVERY) {
2893                 lport = libfc_host_alloc(&qedf_host_template,
2894                     sizeof(struct qedf_ctx));
2895
2896                 if (!lport) {
2897                         QEDF_ERR(NULL, "Could not allocate lport.\n");
2898                         rc = -ENOMEM;
2899                         goto err0;
2900                 }
2901
2902                 /* Initialize qedf_ctx */
2903                 qedf = lport_priv(lport);
2904                 qedf->lport = lport;
2905                 qedf->ctlr.lp = lport;
2906                 qedf->pdev = pdev;
2907                 qedf->dbg_ctx.pdev = pdev;
2908                 qedf->dbg_ctx.host_no = lport->host->host_no;
2909                 spin_lock_init(&qedf->hba_lock);
2910                 INIT_LIST_HEAD(&qedf->fcports);
2911                 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1;
2912                 atomic_set(&qedf->num_offloads, 0);
2913                 qedf->stop_io_on_error = false;
2914                 pci_set_drvdata(pdev, qedf);
2915                 init_completion(&qedf->fipvlan_compl);
2916
2917                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO,
2918                    "QLogic FastLinQ FCoE Module qedf %s, "
2919                    "FW %d.%d.%d.%d\n", QEDF_VERSION,
2920                    FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
2921                    FW_ENGINEERING_VERSION);
2922         } else {
2923                 /* Init pointers during recovery */
2924                 qedf = pci_get_drvdata(pdev);
2925                 lport = qedf->lport;
2926         }
2927
2928         host = lport->host;
2929
2930         /* Allocate mempool for qedf_io_work structs */
2931         qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN,
2932             qedf_io_work_cache);
2933         if (qedf->io_mempool == NULL) {
2934                 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n");
2935                 goto err1;
2936         }
2937         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n",
2938             qedf->io_mempool);
2939
2940         sprintf(host_buf, "qedf_%u_link",
2941             qedf->lport->host->host_no);
2942         qedf->link_update_wq = create_singlethread_workqueue(host_buf);
2943         INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update);
2944         INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery);
2945
2946         qedf->fipvlan_retries = qedf_fipvlan_retries;
2947
2948         /*
2949          * Common probe. Takes care of basic hardware init and pci_*
2950          * functions.
2951          */
2952         memset(&qed_params, 0, sizeof(qed_params));
2953         qed_params.protocol = QED_PROTOCOL_FCOE;
2954         qed_params.dp_module = qedf_dp_module;
2955         qed_params.dp_level = qedf_dp_level;
2956         qed_params.is_vf = is_vf;
2957         qedf->cdev = qed_ops->common->probe(pdev, &qed_params);
2958         if (!qedf->cdev) {
2959                 rc = -ENODEV;
2960                 goto err1;
2961         }
2962
2963         /* Learn information crucial for qedf to progress */
2964         rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
2965         if (rc) {
2966                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n");
2967                 goto err1;
2968         }
2969
2970         /* queue allocation code should come here
2971          * order should be
2972          *      slowpath_start
2973          *      status block allocation
2974          *      interrupt registration (to get min number of queues)
2975          *      set_fcoe_pf_param
2976          *      qed_sp_fcoe_func_start
2977          */
2978         rc = qedf_set_fcoe_pf_param(qedf);
2979         if (rc) {
2980                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n");
2981                 goto err2;
2982         }
2983         qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
2984
2985         /* Record BDQ producer doorbell addresses */
2986         qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr;
2987         qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr;
2988         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2989             "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod,
2990             qedf->bdq_secondary_prod);
2991
2992         qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf);
2993
2994         rc = qedf_prepare_sb(qedf);
2995         if (rc) {
2996
2997                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
2998                 goto err2;
2999         }
3000
3001         /* Start the Slowpath-process */
3002         slowpath_params.int_mode = QED_INT_MODE_MSIX;
3003         slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER;
3004         slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER;
3005         slowpath_params.drv_rev = QEDF_DRIVER_REV_VER;
3006         slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER;
3007         strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE);
3008         rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params);
3009         if (rc) {
3010                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3011                 goto err2;
3012         }
3013
3014         /*
3015          * update_pf_params needs to be called before and after slowpath
3016          * start
3017          */
3018         qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3019
3020         /* Setup interrupts */
3021         rc = qedf_setup_int(qedf);
3022         if (rc)
3023                 goto err3;
3024
3025         rc = qed_ops->start(qedf->cdev, &qedf->tasks);
3026         if (rc) {
3027                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n");
3028                 goto err4;
3029         }
3030         task_start = qedf_get_task_mem(&qedf->tasks, 0);
3031         task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1);
3032         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, "
3033                    "end=%p block_size=%u.\n", task_start, task_end,
3034                    qedf->tasks.size);
3035
3036         /*
3037          * We need to write the number of BDs in the BDQ we've preallocated so
3038          * the f/w will do a prefetch and we'll get an unsolicited CQE when a
3039          * packet arrives.
3040          */
3041         qedf->bdq_prod_idx = QEDF_BDQ_SIZE;
3042         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3043             "Writing %d to primary and secondary BDQ doorbell registers.\n",
3044             qedf->bdq_prod_idx);
3045         writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod);
3046         tmp = readw(qedf->bdq_primary_prod);
3047         writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod);
3048         tmp = readw(qedf->bdq_secondary_prod);
3049
3050         qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3051
3052         /* Now that the dev_info struct has been filled in set the MAC
3053          * address
3054          */
3055         ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac);
3056         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n",
3057                    qedf->mac);
3058
3059         /* Set the WWNN and WWPN based on the MAC address */
3060         qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0);
3061         qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0);
3062         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,  "WWNN=%016llx "
3063                    "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn);
3064
3065         sprintf(host_buf, "host_%d", host->host_no);
3066         qed_ops->common->set_name(qedf->cdev, host_buf);
3067
3068
3069         /* Set xid max values */
3070         qedf->max_scsi_xid = QEDF_MAX_SCSI_XID;
3071         qedf->max_els_xid = QEDF_MAX_ELS_XID;
3072
3073         /* Allocate cmd mgr */
3074         qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf);
3075         if (!qedf->cmd_mgr) {
3076                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n");
3077                 goto err5;
3078         }
3079
3080         if (mode != QEDF_MODE_RECOVERY) {
3081                 host->transportt = qedf_fc_transport_template;
3082                 host->can_queue = QEDF_MAX_ELS_XID;
3083                 host->max_lun = qedf_max_lun;
3084                 host->max_cmd_len = QEDF_MAX_CDB_LEN;
3085                 rc = scsi_add_host(host, &pdev->dev);
3086                 if (rc)
3087                         goto err6;
3088         }
3089
3090         memset(&params, 0, sizeof(params));
3091         params.mtu = 9000;
3092         ether_addr_copy(params.ll2_mac_address, qedf->mac);
3093
3094         /* Start LL2 processing thread */
3095         snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no);
3096         qedf->ll2_recv_wq =
3097                 create_singlethread_workqueue(host_buf);
3098         if (!qedf->ll2_recv_wq) {
3099                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n");
3100                 goto err7;
3101         }
3102
3103 #ifdef CONFIG_DEBUG_FS
3104         qedf_dbg_host_init(&(qedf->dbg_ctx), &qedf_debugfs_ops,
3105                             &qedf_dbg_fops);
3106 #endif
3107
3108         /* Start LL2 */
3109         qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf);
3110         rc = qed_ops->ll2->start(qedf->cdev, &params);
3111         if (rc) {
3112                 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n");
3113                 goto err7;
3114         }
3115         set_bit(QEDF_LL2_STARTED, &qedf->flags);
3116
3117         /* hw will be insterting vlan tag*/
3118         qedf->vlan_hw_insert = 1;
3119         qedf->vlan_id = 0;
3120
3121         /*
3122          * No need to setup fcoe_ctlr or fc_lport objects during recovery since
3123          * they were not reaped during the unload process.
3124          */
3125         if (mode != QEDF_MODE_RECOVERY) {
3126                 /* Setup imbedded fcoe controller */
3127                 qedf_fcoe_ctlr_setup(qedf);
3128
3129                 /* Setup lport */
3130                 rc = qedf_lport_setup(qedf);
3131                 if (rc) {
3132                         QEDF_ERR(&(qedf->dbg_ctx),
3133                             "qedf_lport_setup failed.\n");
3134                         goto err7;
3135                 }
3136         }
3137
3138         sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no);
3139         qedf->timer_work_queue =
3140                 create_singlethread_workqueue(host_buf);
3141         if (!qedf->timer_work_queue) {
3142                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer "
3143                           "workqueue.\n");
3144                 goto err7;
3145         }
3146
3147         /* DPC workqueue is not reaped during recovery unload */
3148         if (mode != QEDF_MODE_RECOVERY) {
3149                 sprintf(host_buf, "qedf_%u_dpc",
3150                     qedf->lport->host->host_no);
3151                 qedf->dpc_wq = create_singlethread_workqueue(host_buf);
3152         }
3153
3154         /*
3155          * GRC dump and sysfs parameters are not reaped during the recovery
3156          * unload process.
3157          */
3158         if (mode != QEDF_MODE_RECOVERY) {
3159                 qedf->grcdump_size = qed_ops->common->dbg_grc_size(qedf->cdev);
3160                 if (qedf->grcdump_size) {
3161                         rc = qedf_alloc_grc_dump_buf(&qedf->grcdump,
3162                             qedf->grcdump_size);
3163                         if (rc) {
3164                                 QEDF_ERR(&(qedf->dbg_ctx),
3165                                     "GRC Dump buffer alloc failed.\n");
3166                                 qedf->grcdump = NULL;
3167                         }
3168
3169                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3170                             "grcdump: addr=%p, size=%u.\n",
3171                             qedf->grcdump, qedf->grcdump_size);
3172                 }
3173                 qedf_create_sysfs_ctx_attr(qedf);
3174
3175                 /* Initialize I/O tracing for this adapter */
3176                 spin_lock_init(&qedf->io_trace_lock);
3177                 qedf->io_trace_idx = 0;
3178         }
3179
3180         init_completion(&qedf->flogi_compl);
3181
3182         memset(&link_params, 0, sizeof(struct qed_link_params));
3183         link_params.link_up = true;
3184         status = qed_ops->common->set_link(qedf->cdev, &link_params);
3185         if (status)
3186                 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n");
3187
3188         /* Start/restart discovery */
3189         if (mode == QEDF_MODE_RECOVERY)
3190                 fcoe_ctlr_link_up(&qedf->ctlr);
3191         else
3192                 fc_fabric_login(lport);
3193
3194         /* All good */
3195         return 0;
3196
3197 err7:
3198         if (qedf->ll2_recv_wq)
3199                 destroy_workqueue(qedf->ll2_recv_wq);
3200         fc_remove_host(qedf->lport->host);
3201         scsi_remove_host(qedf->lport->host);
3202 #ifdef CONFIG_DEBUG_FS
3203         qedf_dbg_host_exit(&(qedf->dbg_ctx));
3204 #endif
3205 err6:
3206         qedf_cmd_mgr_free(qedf->cmd_mgr);
3207 err5:
3208         qed_ops->stop(qedf->cdev);
3209 err4:
3210         qedf_free_fcoe_pf_param(qedf);
3211         qedf_sync_free_irqs(qedf);
3212 err3:
3213         qed_ops->common->slowpath_stop(qedf->cdev);
3214 err2:
3215         qed_ops->common->remove(qedf->cdev);
3216 err1:
3217         scsi_host_put(lport->host);
3218 err0:
3219         return rc;
3220 }
3221
3222 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
3223 {
3224         return __qedf_probe(pdev, QEDF_MODE_NORMAL);
3225 }
3226
3227 static void __qedf_remove(struct pci_dev *pdev, int mode)
3228 {
3229         struct qedf_ctx *qedf;
3230
3231         if (!pdev) {
3232                 QEDF_ERR(NULL, "pdev is NULL.\n");
3233                 return;
3234         }
3235
3236         qedf = pci_get_drvdata(pdev);
3237
3238         /*
3239          * Prevent race where we're in board disable work and then try to
3240          * rmmod the module.
3241          */
3242         if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
3243                 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n");
3244                 return;
3245         }
3246
3247         if (mode != QEDF_MODE_RECOVERY)
3248                 set_bit(QEDF_UNLOADING, &qedf->flags);
3249
3250         /* Logoff the fabric to upload all connections */
3251         if (mode == QEDF_MODE_RECOVERY)
3252                 fcoe_ctlr_link_down(&qedf->ctlr);
3253         else
3254                 fc_fabric_logoff(qedf->lport);
3255         qedf_wait_for_upload(qedf);
3256
3257 #ifdef CONFIG_DEBUG_FS
3258         qedf_dbg_host_exit(&(qedf->dbg_ctx));
3259 #endif
3260
3261         /* Stop any link update handling */
3262         cancel_delayed_work_sync(&qedf->link_update);
3263         destroy_workqueue(qedf->link_update_wq);
3264         qedf->link_update_wq = NULL;
3265
3266         if (qedf->timer_work_queue)
3267                 destroy_workqueue(qedf->timer_work_queue);
3268
3269         /* Stop Light L2 */
3270         clear_bit(QEDF_LL2_STARTED, &qedf->flags);
3271         qed_ops->ll2->stop(qedf->cdev);
3272         if (qedf->ll2_recv_wq)
3273                 destroy_workqueue(qedf->ll2_recv_wq);
3274
3275         /* Stop fastpath */
3276         qedf_sync_free_irqs(qedf);
3277         qedf_destroy_sb(qedf);
3278
3279         /*
3280          * During recovery don't destroy OS constructs that represent the
3281          * physical port.
3282          */
3283         if (mode != QEDF_MODE_RECOVERY) {
3284                 qedf_free_grc_dump_buf(&qedf->grcdump);
3285                 qedf_remove_sysfs_ctx_attr(qedf);
3286
3287                 /* Remove all SCSI/libfc/libfcoe structures */
3288                 fcoe_ctlr_destroy(&qedf->ctlr);
3289                 fc_lport_destroy(qedf->lport);
3290                 fc_remove_host(qedf->lport->host);
3291                 scsi_remove_host(qedf->lport->host);
3292         }
3293
3294         qedf_cmd_mgr_free(qedf->cmd_mgr);
3295
3296         if (mode != QEDF_MODE_RECOVERY) {
3297                 fc_exch_mgr_free(qedf->lport);
3298                 fc_lport_free_stats(qedf->lport);
3299
3300                 /* Wait for all vports to be reaped */
3301                 qedf_wait_for_vport_destroy(qedf);
3302         }
3303
3304         /*
3305          * Now that all connections have been uploaded we can stop the
3306          * rest of the qed operations
3307          */
3308         qed_ops->stop(qedf->cdev);
3309
3310         if (mode != QEDF_MODE_RECOVERY) {
3311                 if (qedf->dpc_wq) {
3312                         /* Stop general DPC handling */
3313                         destroy_workqueue(qedf->dpc_wq);
3314                         qedf->dpc_wq = NULL;
3315                 }
3316         }
3317
3318         /* Final shutdown for the board */
3319         qedf_free_fcoe_pf_param(qedf);
3320         if (mode != QEDF_MODE_RECOVERY) {
3321                 qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3322                 pci_set_drvdata(pdev, NULL);
3323         }
3324         qed_ops->common->slowpath_stop(qedf->cdev);
3325         qed_ops->common->remove(qedf->cdev);
3326
3327         mempool_destroy(qedf->io_mempool);
3328
3329         /* Only reap the Scsi_host on a real removal */
3330         if (mode != QEDF_MODE_RECOVERY)
3331                 scsi_host_put(qedf->lport->host);
3332 }
3333
3334 static void qedf_remove(struct pci_dev *pdev)
3335 {
3336         /* Check to make sure this function wasn't already disabled */
3337         if (!atomic_read(&pdev->enable_cnt))
3338                 return;
3339
3340         __qedf_remove(pdev, QEDF_MODE_NORMAL);
3341 }
3342
3343 /*
3344  * Module Init/Remove
3345  */
3346
3347 static int __init qedf_init(void)
3348 {
3349         int ret;
3350
3351         /* If debug=1 passed, set the default log mask */
3352         if (qedf_debug == QEDF_LOG_DEFAULT)
3353                 qedf_debug = QEDF_DEFAULT_LOG_MASK;
3354
3355         /* Print driver banner */
3356         QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR,
3357                    QEDF_VERSION);
3358
3359         /* Create kmem_cache for qedf_io_work structs */
3360         qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache",
3361             sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL);
3362         if (qedf_io_work_cache == NULL) {
3363                 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n");
3364                 goto err1;
3365         }
3366         QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n",
3367             qedf_io_work_cache);
3368
3369         qed_ops = qed_get_fcoe_ops();
3370         if (!qed_ops) {
3371                 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n");
3372                 goto err1;
3373         }
3374
3375 #ifdef CONFIG_DEBUG_FS
3376         qedf_dbg_init("qedf");
3377 #endif
3378
3379         qedf_fc_transport_template =
3380             fc_attach_transport(&qedf_fc_transport_fn);
3381         if (!qedf_fc_transport_template) {
3382                 QEDF_ERR(NULL, "Could not register with FC transport\n");
3383                 goto err2;
3384         }
3385
3386         qedf_fc_vport_transport_template =
3387                 fc_attach_transport(&qedf_fc_vport_transport_fn);
3388         if (!qedf_fc_vport_transport_template) {
3389                 QEDF_ERR(NULL, "Could not register vport template with FC "
3390                           "transport\n");
3391                 goto err3;
3392         }
3393
3394         qedf_io_wq = create_workqueue("qedf_io_wq");
3395         if (!qedf_io_wq) {
3396                 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n");
3397                 goto err4;
3398         }
3399
3400         qedf_cb_ops.get_login_failures = qedf_get_login_failures;
3401
3402         ret = pci_register_driver(&qedf_pci_driver);
3403         if (ret) {
3404                 QEDF_ERR(NULL, "Failed to register driver\n");
3405                 goto err5;
3406         }
3407
3408         return 0;
3409
3410 err5:
3411         destroy_workqueue(qedf_io_wq);
3412 err4:
3413         fc_release_transport(qedf_fc_vport_transport_template);
3414 err3:
3415         fc_release_transport(qedf_fc_transport_template);
3416 err2:
3417 #ifdef CONFIG_DEBUG_FS
3418         qedf_dbg_exit();
3419 #endif
3420         qed_put_fcoe_ops();
3421 err1:
3422         return -EINVAL;
3423 }
3424
3425 static void __exit qedf_cleanup(void)
3426 {
3427         pci_unregister_driver(&qedf_pci_driver);
3428
3429         destroy_workqueue(qedf_io_wq);
3430
3431         fc_release_transport(qedf_fc_vport_transport_template);
3432         fc_release_transport(qedf_fc_transport_template);
3433 #ifdef CONFIG_DEBUG_FS
3434         qedf_dbg_exit();
3435 #endif
3436         qed_put_fcoe_ops();
3437
3438         kmem_cache_destroy(qedf_io_work_cache);
3439 }
3440
3441 MODULE_LICENSE("GPL");
3442 MODULE_DESCRIPTION("QLogic QEDF 25/40/50/100Gb FCoE Driver");
3443 MODULE_AUTHOR("QLogic Corporation");
3444 MODULE_VERSION(QEDF_VERSION);
3445 module_init(qedf_init);
3446 module_exit(qedf_cleanup);