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 <scsi/fc_frame.h>
  22 #include <linux/if_ether.h>
  23 #include <linux/if_vlan.h>
  24 #include <linux/cpu.h>
  25 #include "qedf.h"
  26 #include <uapi/linux/pci_regs.h>
  27
  28 const struct qed_fcoe_ops *qed_ops;
  29
  30 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id);
  31 static void qedf_remove(struct pci_dev *pdev);
  32
  33 extern struct qedf_debugfs_ops qedf_debugfs_ops;
  34 extern struct file_operations qedf_dbg_fops;
  35
  36 /*
  37  * Driver module parameters.
  38  */
  39 static unsigned int qedf_dev_loss_tmo = 60;
  40 module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO);
  41 MODULE_PARM_DESC(dev_loss_tmo,  " dev_loss_tmo setting for attached "
  42         "remote ports (default 60)");
  43
  44 uint qedf_debug = QEDF_LOG_INFO;
  45 module_param_named(debug, qedf_debug, uint, S_IRUGO);
  46 MODULE_PARM_DESC(debug, " Debug mask. Pass '1' to enable default debugging"
  47         " mask");
  48
  49 static uint qedf_fipvlan_retries = 30;
  50 module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO);
  51 MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt "
  52         "before giving up (default 30)");
  53
  54 static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN;
  55 module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO);
  56 MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails "
  57         "(default 1002).");
  58
  59 static uint qedf_default_prio = QEDF_DEFAULT_PRIO;
  60 module_param_named(default_prio, qedf_default_prio, int, S_IRUGO);
  61 MODULE_PARM_DESC(default_prio, " Default 802.1q priority for FIP and FCoE"
  62         " traffic (default 3).");
  63
  64 uint qedf_dump_frames;
  65 module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR);
  66 MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames "
  67         "(default off)");
  68
  69 static uint qedf_queue_depth;
  70 module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO);
  71 MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered "
  72         "by the qedf driver. Default is 0 (use OS default).");
  73
  74 uint qedf_io_tracing;
  75 module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR);
  76 MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions "
  77         "into trace buffer. (default off).");
  78
  79 static uint qedf_max_lun = MAX_FIBRE_LUNS;
  80 module_param_named(max_lun, qedf_max_lun, int, S_IRUGO);
  81 MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver "
  82         "supports. (default 0xffffffff)");
  83
  84 uint qedf_link_down_tmo;
  85 module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO);
  86 MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the "
  87         "link is down by N seconds.");
  88
  89 bool qedf_retry_delay;
  90 module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR);
  91 MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry "
  92         "delay handling (default off).");
  93
  94 static uint qedf_dp_module;
  95 module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO);
  96 MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed "
  97         "qed module during probe.");
  98
  99 static uint qedf_dp_level = QED_LEVEL_NOTICE;
 100 module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO);
 101 MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module  "
 102         "during probe (0-3: 0 more verbose).");
 103
 104 struct workqueue_struct *qedf_io_wq;
 105
 106 static struct fcoe_percpu_s qedf_global;
 107 static DEFINE_SPINLOCK(qedf_global_lock);
 108
 109 static struct kmem_cache *qedf_io_work_cache;
 110
 111 void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id)
 112 {
 113         qedf->vlan_id = vlan_id;
 114         qedf->vlan_id |= qedf_default_prio << VLAN_PRIO_SHIFT;
 115         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Setting vlan_id=%04x "
 116                    "prio=%d.\n", vlan_id, qedf_default_prio);
 117 }
 118
 119 /* Returns true if we have a valid vlan, false otherwise */
 120 static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf)
 121 {
 122         int rc;
 123
 124         if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
 125                 QEDF_ERR(&(qedf->dbg_ctx), "Link not up.\n");
 126                 return  false;
 127         }
 128
 129         while (qedf->fipvlan_retries--) {
 130                 if (qedf->vlan_id > 0)
 131                         return true;
 132                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 133                            "Retry %d.\n", qedf->fipvlan_retries);
 134                 init_completion(&qedf->fipvlan_compl);
 135                 qedf_fcoe_send_vlan_req(qedf);
 136                 rc = wait_for_completion_timeout(&qedf->fipvlan_compl,
 137                     1 * HZ);
 138                 if (rc > 0) {
 139                         fcoe_ctlr_link_up(&qedf->ctlr);
 140                         return true;
 141                 }
 142         }
 143
 144         return false;
 145 }
 146
 147 static void qedf_handle_link_update(struct work_struct *work)
 148 {
 149         struct qedf_ctx *qedf =
 150             container_of(work, struct qedf_ctx, link_update.work);
 151         int rc;
 152
 153         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Entered.\n");
 154
 155         if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
 156                 rc = qedf_initiate_fipvlan_req(qedf);
 157                 if (rc)
 158                         return;
 159                 /*
 160                  * If we get here then we never received a repsonse to our
 161                  * fip vlan request so set the vlan_id to the default and
 162                  * tell FCoE that the link is up
 163                  */
 164                 QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN "
 165                            "response, falling back to default VLAN %d.\n",
 166                            qedf_fallback_vlan);
 167                 qedf_set_vlan_id(qedf, qedf_fallback_vlan);
 168
 169                 /*
 170                  * Zero out data_src_addr so we'll update it with the new
 171                  * lport port_id
 172                  */
 173                 eth_zero_addr(qedf->data_src_addr);
 174                 fcoe_ctlr_link_up(&qedf->ctlr);
 175         } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
 176                 /*
 177                  * If we hit here and link_down_tmo_valid is still 1 it means
 178                  * that link_down_tmo timed out so set it to 0 to make sure any
 179                  * other readers have accurate state.
 180                  */
 181                 atomic_set(&qedf->link_down_tmo_valid, 0);
 182                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 183                     "Calling fcoe_ctlr_link_down().\n");
 184                 fcoe_ctlr_link_down(&qedf->ctlr);
 185                 qedf_wait_for_upload(qedf);
 186                 /* Reset the number of FIP VLAN retries */
 187                 qedf->fipvlan_retries = qedf_fipvlan_retries;
 188         }
 189 }
 190
 191 #define QEDF_FCOE_MAC_METHOD_GRANGED_MAC                1
 192 #define QEDF_FCOE_MAC_METHOD_FCF_MAP                    2
 193 #define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC               3
 194 static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp)
 195 {
 196         u8 *granted_mac;
 197         struct fc_frame_header *fh = fc_frame_header_get(fp);
 198         u8 fc_map[3];
 199         int method = 0;
 200
 201         /* Get granted MAC address from FIP FLOGI payload */
 202         granted_mac = fr_cb(fp)->granted_mac;
 203
 204         /*
 205          * We set the source MAC for FCoE traffic based on the Granted MAC
 206          * address from the switch.
 207          *
 208          * If granted_mac is non-zero, we used that.
 209          * If the granted_mac is zeroed out, created the FCoE MAC based on
 210          * the sel_fcf->fc_map and the d_id fo the FLOGI frame.
 211          * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the
 212          * d_id of the FLOGI frame.
 213          */
 214         if (!is_zero_ether_addr(granted_mac)) {
 215                 ether_addr_copy(qedf->data_src_addr, granted_mac);
 216                 method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC;
 217         } else if (qedf->ctlr.sel_fcf->fc_map != 0) {
 218                 hton24(fc_map, qedf->ctlr.sel_fcf->fc_map);
 219                 qedf->data_src_addr[0] = fc_map[0];
 220                 qedf->data_src_addr[1] = fc_map[1];
 221                 qedf->data_src_addr[2] = fc_map[2];
 222                 qedf->data_src_addr[3] = fh->fh_d_id[0];
 223                 qedf->data_src_addr[4] = fh->fh_d_id[1];
 224                 qedf->data_src_addr[5] = fh->fh_d_id[2];
 225                 method = QEDF_FCOE_MAC_METHOD_FCF_MAP;
 226         } else {
 227                 fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id);
 228                 method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC;
 229         }
 230
 231         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 232             "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method);
 233 }
 234
 235 static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp,
 236         void *arg)
 237 {
 238         struct fc_exch *exch = fc_seq_exch(seq);
 239         struct fc_lport *lport = exch->lp;
 240         struct qedf_ctx *qedf = lport_priv(lport);
 241
 242         if (!qedf) {
 243                 QEDF_ERR(NULL, "qedf is NULL.\n");
 244                 return;
 245         }
 246
 247         /*
 248          * If ERR_PTR is set then don't try to stat anything as it will cause
 249          * a crash when we access fp.
 250          */
 251         if (IS_ERR(fp)) {
 252                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
 253                     "fp has IS_ERR() set.\n");
 254                 goto skip_stat;
 255         }
 256
 257         /* Log stats for FLOGI reject */
 258         if (fc_frame_payload_op(fp) == ELS_LS_RJT)
 259                 qedf->flogi_failed++;
 260         else if (fc_frame_payload_op(fp) == ELS_LS_ACC) {
 261                 /* Set the source MAC we will use for FCoE traffic */
 262                 qedf_set_data_src_addr(qedf, fp);
 263         }
 264
 265         /* Complete flogi_compl so we can proceed to sending ADISCs */
 266         complete(&qedf->flogi_compl);
 267
 268 skip_stat:
 269         /* Report response to libfc */
 270         fc_lport_flogi_resp(seq, fp, lport);
 271 }
 272
 273 static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did,
 274         struct fc_frame *fp, unsigned int op,
 275         void (*resp)(struct fc_seq *,
 276         struct fc_frame *,
 277         void *),
 278         void *arg, u32 timeout)
 279 {
 280         struct qedf_ctx *qedf = lport_priv(lport);
 281
 282         /*
 283          * Intercept FLOGI for statistic purposes. Note we use the resp
 284          * callback to tell if this is really a flogi.
 285          */
 286         if (resp == fc_lport_flogi_resp) {
 287                 qedf->flogi_cnt++;
 288                 return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp,
 289                     arg, timeout);
 290         }
 291
 292         return fc_elsct_send(lport, did, fp, op, resp, arg, timeout);
 293 }
 294
 295 int qedf_send_flogi(struct qedf_ctx *qedf)
 296 {
 297         struct fc_lport *lport;
 298         struct fc_frame *fp;
 299
 300         lport = qedf->lport;
 301
 302         if (!lport->tt.elsct_send)
 303                 return -EINVAL;
 304
 305         fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi));
 306         if (!fp) {
 307                 QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n");
 308                 return -ENOMEM;
 309         }
 310
 311         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
 312             "Sending FLOGI to reestablish session with switch.\n");
 313         lport->tt.elsct_send(lport, FC_FID_FLOGI, fp,
 314             ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov);
 315
 316         init_completion(&qedf->flogi_compl);
 317
 318         return 0;
 319 }
 320
 321 struct qedf_tmp_rdata_item {
 322         struct fc_rport_priv *rdata;
 323         struct list_head list;
 324 };
 325
 326 /*
 327  * This function is called if link_down_tmo is in use.  If we get a link up and
 328  * link_down_tmo has not expired then use just FLOGI/ADISC to recover our
 329  * sessions with targets.  Otherwise, just call fcoe_ctlr_link_up().
 330  */
 331 static void qedf_link_recovery(struct work_struct *work)
 332 {
 333         struct qedf_ctx *qedf =
 334             container_of(work, struct qedf_ctx, link_recovery.work);
 335         struct qedf_rport *fcport;
 336         struct fc_rport_priv *rdata;
 337         struct qedf_tmp_rdata_item *rdata_item, *tmp_rdata_item;
 338         bool rc;
 339         int retries = 30;
 340         int rval, i;
 341         struct list_head rdata_login_list;
 342
 343         INIT_LIST_HEAD(&rdata_login_list);
 344
 345         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 346             "Link down tmo did not expire.\n");
 347
 348         /*
 349          * Essentially reset the fcoe_ctlr here without affecting the state
 350          * of the libfc structs.
 351          */
 352         qedf->ctlr.state = FIP_ST_LINK_WAIT;
 353         fcoe_ctlr_link_down(&qedf->ctlr);
 354
 355         /*
 356          * Bring the link up before we send the fipvlan request so libfcoe
 357          * can select a new fcf in parallel
 358          */
 359         fcoe_ctlr_link_up(&qedf->ctlr);
 360
 361         /* Since the link when down and up to verify which vlan we're on */
 362         qedf->fipvlan_retries = qedf_fipvlan_retries;
 363         rc = qedf_initiate_fipvlan_req(qedf);
 364         /* If getting the VLAN fails, set the VLAN to the fallback one */
 365         if (!rc)
 366                 qedf_set_vlan_id(qedf, qedf_fallback_vlan);
 367
 368         /*
 369          * We need to wait for an FCF to be selected due to the
 370          * fcoe_ctlr_link_up other the FLOGI will be rejected.
 371          */
 372         while (retries > 0) {
 373                 if (qedf->ctlr.sel_fcf) {
 374                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 375                             "FCF reselected, proceeding with FLOGI.\n");
 376                         break;
 377                 }
 378                 msleep(500);
 379                 retries--;
 380         }
 381
 382         if (retries < 1) {
 383                 QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for "
 384                     "FCF selection.\n");
 385                 return;
 386         }
 387
 388         rval = qedf_send_flogi(qedf);
 389         if (rval)
 390                 return;
 391
 392         /* Wait for FLOGI completion before proceeding with sending ADISCs */
 393         i = wait_for_completion_timeout(&qedf->flogi_compl,
 394             qedf->lport->r_a_tov);
 395         if (i == 0) {
 396                 QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n");
 397                 return;
 398         }
 399
 400         /*
 401          * Call lport->tt.rport_login which will cause libfc to send an
 402          * ADISC since the rport is in state ready.
 403          */
 404         rcu_read_lock();
 405         list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
 406                 rdata = fcport->rdata;
 407                 if (rdata == NULL)
 408                         continue;
 409                 rdata_item = kzalloc(sizeof(struct qedf_tmp_rdata_item),
 410                     GFP_ATOMIC);
 411                 if (!rdata_item)
 412                         continue;
 413                 if (kref_get_unless_zero(&rdata->kref)) {
 414                         rdata_item->rdata = rdata;
 415                         list_add(&rdata_item->list, &rdata_login_list);
 416                 } else
 417                         kfree(rdata_item);
 418         }
 419         rcu_read_unlock();
 420         /*
 421          * Do the fc_rport_login outside of the rcu lock so we don't take a
 422          * mutex in an atomic context.
 423          */
 424         list_for_each_entry_safe(rdata_item, tmp_rdata_item, &rdata_login_list,
 425             list) {
 426                 list_del(&rdata_item->list);
 427                 fc_rport_login(rdata_item->rdata);
 428                 kref_put(&rdata_item->rdata->kref, fc_rport_destroy);
 429                 kfree(rdata_item);
 430         }
 431 }
 432
 433 static void qedf_update_link_speed(struct qedf_ctx *qedf,
 434         struct qed_link_output *link)
 435 {
 436         struct fc_lport *lport = qedf->lport;
 437
 438         lport->link_speed = FC_PORTSPEED_UNKNOWN;
 439         lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN;
 440
 441         /* Set fc_host link speed */
 442         switch (link->speed) {
 443         case 10000:
 444                 lport->link_speed = FC_PORTSPEED_10GBIT;
 445                 break;
 446         case 25000:
 447                 lport->link_speed = FC_PORTSPEED_25GBIT;
 448                 break;
 449         case 40000:
 450                 lport->link_speed = FC_PORTSPEED_40GBIT;
 451                 break;
 452         case 50000:
 453                 lport->link_speed = FC_PORTSPEED_50GBIT;
 454                 break;
 455         case 100000:
 456                 lport->link_speed = FC_PORTSPEED_100GBIT;
 457                 break;
 458         default:
 459                 lport->link_speed = FC_PORTSPEED_UNKNOWN;
 460                 break;
 461         }
 462
 463         /*
 464          * Set supported link speed by querying the supported
 465          * capabilities of the link.
 466          */
 467         if (link->supported_caps & SUPPORTED_10000baseKR_Full)
 468                 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT;
 469         if (link->supported_caps & SUPPORTED_25000baseKR_Full)
 470                 lport->link_supported_speeds |= FC_PORTSPEED_25GBIT;
 471         if (link->supported_caps & SUPPORTED_40000baseLR4_Full)
 472                 lport->link_supported_speeds |= FC_PORTSPEED_40GBIT;
 473         if (link->supported_caps & SUPPORTED_50000baseKR2_Full)
 474                 lport->link_supported_speeds |= FC_PORTSPEED_50GBIT;
 475         if (link->supported_caps & SUPPORTED_100000baseKR4_Full)
 476                 lport->link_supported_speeds |= FC_PORTSPEED_100GBIT;
 477         fc_host_supported_speeds(lport->host) = lport->link_supported_speeds;
 478 }
 479
 480 static void qedf_link_update(void *dev, struct qed_link_output *link)
 481 {
 482         struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
 483
 484         if (link->link_up) {
 485                 QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n",
 486                     link->speed / 1000);
 487
 488                 /* Cancel any pending link down work */
 489                 cancel_delayed_work(&qedf->link_update);
 490
 491                 atomic_set(&qedf->link_state, QEDF_LINK_UP);
 492                 qedf_update_link_speed(qedf, link);
 493
 494                 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) {
 495                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 496                              "DCBx done.\n");
 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         } else {
 507                 QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n");
 508
 509                 atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
 510                 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
 511                 /*
 512                  * Flag that we're waiting for the link to come back up before
 513                  * informing the fcoe layer of the event.
 514                  */
 515                 if (qedf_link_down_tmo > 0) {
 516                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 517                             "Starting link down tmo.\n");
 518                         atomic_set(&qedf->link_down_tmo_valid, 1);
 519                 }
 520                 qedf->vlan_id  = 0;
 521                 qedf_update_link_speed(qedf, link);
 522                 queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 523                     qedf_link_down_tmo * HZ);
 524         }
 525 }
 526
 527
 528 static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type)
 529 {
 530         struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
 531
 532         QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe "
 533             "prio=%d.\n", get->operational.valid, get->operational.enabled,
 534             get->operational.app_prio.fcoe);
 535
 536         if (get->operational.enabled && get->operational.valid) {
 537                 /* If DCBX was already negotiated on link up then just exit */
 538                 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) {
 539                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 540                             "DCBX already set on link up.\n");
 541                         return;
 542                 }
 543
 544                 atomic_set(&qedf->dcbx, QEDF_DCBX_DONE);
 545
 546                 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
 547                         if (atomic_read(&qedf->link_down_tmo_valid) > 0)
 548                                 queue_delayed_work(qedf->link_update_wq,
 549                                     &qedf->link_recovery, 0);
 550                         else
 551                                 queue_delayed_work(qedf->link_update_wq,
 552                                     &qedf->link_update, 0);
 553                         atomic_set(&qedf->link_down_tmo_valid, 0);
 554                 }
 555         }
 556
 557 }
 558
 559 static u32 qedf_get_login_failures(void *cookie)
 560 {
 561         struct qedf_ctx *qedf;
 562
 563         qedf = (struct qedf_ctx *)cookie;
 564         return qedf->flogi_failed;
 565 }
 566
 567 static struct qed_fcoe_cb_ops qedf_cb_ops = {
 568         {
 569                 .link_update = qedf_link_update,
 570                 .dcbx_aen = qedf_dcbx_handler,
 571         }
 572 };
 573
 574 /*
 575  * Various transport templates.
 576  */
 577
 578 static struct scsi_transport_template *qedf_fc_transport_template;
 579 static struct scsi_transport_template *qedf_fc_vport_transport_template;
 580
 581 /*
 582  * SCSI EH handlers
 583  */
 584 static int qedf_eh_abort(struct scsi_cmnd *sc_cmd)
 585 {
 586         struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
 587         struct fc_rport_libfc_priv *rp = rport->dd_data;
 588         struct qedf_rport *fcport;
 589         struct fc_lport *lport;
 590         struct qedf_ctx *qedf;
 591         struct qedf_ioreq *io_req;
 592         int rc = FAILED;
 593         int rval;
 594
 595         if (fc_remote_port_chkready(rport)) {
 596                 QEDF_ERR(NULL, "rport not ready\n");
 597                 goto out;
 598         }
 599
 600         lport = shost_priv(sc_cmd->device->host);
 601         qedf = (struct qedf_ctx *)lport_priv(lport);
 602
 603         if ((lport->state != LPORT_ST_READY) || !(lport->link_up)) {
 604                 QEDF_ERR(&(qedf->dbg_ctx), "link not ready.\n");
 605                 goto out;
 606         }
 607
 608         fcport = (struct qedf_rport *)&rp[1];
 609
 610         io_req = (struct qedf_ioreq *)sc_cmd->SCp.ptr;
 611         if (!io_req) {
 612                 QEDF_ERR(&(qedf->dbg_ctx), "io_req is NULL.\n");
 613                 rc = SUCCESS;
 614                 goto out;
 615         }
 616
 617         if (!test_bit(QEDF_CMD_OUTSTANDING, &io_req->flags) ||
 618             test_bit(QEDF_CMD_IN_CLEANUP, &io_req->flags) ||
 619             test_bit(QEDF_CMD_IN_ABORT, &io_req->flags)) {
 620                 QEDF_ERR(&(qedf->dbg_ctx), "io_req xid=0x%x already in "
 621                           "cleanup or abort processing or already "
 622                           "completed.\n", io_req->xid);
 623                 rc = SUCCESS;
 624                 goto out;
 625         }
 626
 627         QEDF_ERR(&(qedf->dbg_ctx), "Aborting io_req sc_cmd=%p xid=0x%x "
 628                   "fp_idx=%d.\n", sc_cmd, io_req->xid, io_req->fp_idx);
 629
 630         if (qedf->stop_io_on_error) {
 631                 qedf_stop_all_io(qedf);
 632                 rc = SUCCESS;
 633                 goto out;
 634         }
 635
 636         init_completion(&io_req->abts_done);
 637         rval = qedf_initiate_abts(io_req, true);
 638         if (rval) {
 639                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n");
 640                 goto out;
 641         }
 642
 643         wait_for_completion(&io_req->abts_done);
 644
 645         if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS ||
 646             io_req->event == QEDF_IOREQ_EV_ABORT_FAILED ||
 647             io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) {
 648                 /*
 649                  * If we get a reponse to the abort this is success from
 650                  * the perspective that all references to the command have
 651                  * been removed from the driver and firmware
 652                  */
 653                 rc = SUCCESS;
 654         } else {
 655                 /* If the abort and cleanup failed then return a failure */
 656                 rc = FAILED;
 657         }
 658
 659         if (rc == SUCCESS)
 660                 QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n",
 661                           io_req->xid);
 662         else
 663                 QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n",
 664                           io_req->xid);
 665
 666 out:
 667         return rc;
 668 }
 669
 670 static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd)
 671 {
 672         QEDF_ERR(NULL, "TARGET RESET Issued...");
 673         return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET);
 674 }
 675
 676 static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd)
 677 {
 678         QEDF_ERR(NULL, "LUN RESET Issued...\n");
 679         return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET);
 680 }
 681
 682 void qedf_wait_for_upload(struct qedf_ctx *qedf)
 683 {
 684         while (1) {
 685                 if (atomic_read(&qedf->num_offloads))
 686                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 687                             "Waiting for all uploads to complete.\n");
 688                 else
 689                         break;
 690                 msleep(500);
 691         }
 692 }
 693
 694 /* Performs soft reset of qedf_ctx by simulating a link down/up */
 695 static void qedf_ctx_soft_reset(struct fc_lport *lport)
 696 {
 697         struct qedf_ctx *qedf;
 698
 699         if (lport->vport) {
 700                 QEDF_ERR(NULL, "Cannot issue host reset on NPIV port.\n");
 701                 return;
 702         }
 703
 704         qedf = lport_priv(lport);
 705
 706         /* For host reset, essentially do a soft link up/down */
 707         atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
 708         atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
 709         queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 710             0);
 711         qedf_wait_for_upload(qedf);
 712         atomic_set(&qedf->link_state, QEDF_LINK_UP);
 713         qedf->vlan_id  = 0;
 714         queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 715             0);
 716 }
 717
 718 /* Reset the host by gracefully logging out and then logging back in */
 719 static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd)
 720 {
 721         struct fc_lport *lport;
 722         struct qedf_ctx *qedf;
 723
 724         lport = shost_priv(sc_cmd->device->host);
 725         qedf = lport_priv(lport);
 726
 727         if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN ||
 728             test_bit(QEDF_UNLOADING, &qedf->flags))
 729                 return FAILED;
 730
 731         QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued...");
 732
 733         qedf_ctx_soft_reset(lport);
 734
 735         return SUCCESS;
 736 }
 737
 738 static int qedf_slave_configure(struct scsi_device *sdev)
 739 {
 740         if (qedf_queue_depth) {
 741                 scsi_change_queue_depth(sdev, qedf_queue_depth);
 742         }
 743
 744         return 0;
 745 }
 746
 747 static struct scsi_host_template qedf_host_template = {
 748         .module         = THIS_MODULE,
 749         .name           = QEDF_MODULE_NAME,
 750         .this_id        = -1,
 751         .cmd_per_lun    = 32,
 752         .use_clustering = ENABLE_CLUSTERING,
 753         .max_sectors    = 0xffff,
 754         .queuecommand   = qedf_queuecommand,
 755         .shost_attrs    = qedf_host_attrs,
 756         .eh_abort_handler       = qedf_eh_abort,
 757         .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */
 758         .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */
 759         .eh_host_reset_handler  = qedf_eh_host_reset,
 760         .slave_configure        = qedf_slave_configure,
 761         .dma_boundary = QED_HW_DMA_BOUNDARY,
 762         .sg_tablesize = QEDF_MAX_BDS_PER_CMD,
 763         .can_queue = FCOE_PARAMS_NUM_TASKS,
 764         .change_queue_depth = scsi_change_queue_depth,
 765 };
 766
 767 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen)
 768 {
 769         int rc;
 770
 771         spin_lock(&qedf_global_lock);
 772         rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global);
 773         spin_unlock(&qedf_global_lock);
 774
 775         return rc;
 776 }
 777
 778 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id)
 779 {
 780         struct qedf_rport *fcport;
 781         struct fc_rport_priv *rdata;
 782
 783         rcu_read_lock();
 784         list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
 785                 rdata = fcport->rdata;
 786                 if (rdata == NULL)
 787                         continue;
 788                 if (rdata->ids.port_id == port_id) {
 789                         rcu_read_unlock();
 790                         return fcport;
 791                 }
 792         }
 793         rcu_read_unlock();
 794
 795         /* Return NULL to caller to let them know fcport was not found */
 796         return NULL;
 797 }
 798
 799 /* Transmits an ELS frame over an offloaded session */
 800 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp)
 801 {
 802         struct fc_frame_header *fh;
 803         int rc = 0;
 804
 805         fh = fc_frame_header_get(fp);
 806         if ((fh->fh_type == FC_TYPE_ELS) &&
 807             (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
 808                 switch (fc_frame_payload_op(fp)) {
 809                 case ELS_ADISC:
 810                         qedf_send_adisc(fcport, fp);
 811                         rc = 1;
 812                         break;
 813                 }
 814         }
 815
 816         return rc;
 817 }
 818
 819 /**
 820  * qedf_xmit - qedf FCoE frame transmit function
 821  *
 822  */
 823 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp)
 824 {
 825         struct fc_lport         *base_lport;
 826         struct qedf_ctx         *qedf;
 827         struct ethhdr           *eh;
 828         struct fcoe_crc_eof     *cp;
 829         struct sk_buff          *skb;
 830         struct fc_frame_header  *fh;
 831         struct fcoe_hdr         *hp;
 832         u8                      sof, eof;
 833         u32                     crc;
 834         unsigned int            hlen, tlen, elen;
 835         int                     wlen;
 836         struct fc_stats         *stats;
 837         struct fc_lport *tmp_lport;
 838         struct fc_lport *vn_port = NULL;
 839         struct qedf_rport *fcport;
 840         int rc;
 841         u16 vlan_tci = 0;
 842
 843         qedf = (struct qedf_ctx *)lport_priv(lport);
 844
 845         fh = fc_frame_header_get(fp);
 846         skb = fp_skb(fp);
 847
 848         /* Filter out traffic to other NPIV ports on the same host */
 849         if (lport->vport)
 850                 base_lport = shost_priv(vport_to_shost(lport->vport));
 851         else
 852                 base_lport = lport;
 853
 854         /* Flag if the destination is the base port */
 855         if (base_lport->port_id == ntoh24(fh->fh_d_id)) {
 856                 vn_port = base_lport;
 857         } else {
 858                 /* Got through the list of vports attached to the base_lport
 859                  * and see if we have a match with the destination address.
 860                  */
 861                 list_for_each_entry(tmp_lport, &base_lport->vports, list) {
 862                         if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) {
 863                                 vn_port = tmp_lport;
 864                                 break;
 865                         }
 866                 }
 867         }
 868         if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) {
 869                 struct fc_rport_priv *rdata = NULL;
 870
 871                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
 872                     "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id));
 873                 kfree_skb(skb);
 874                 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id));
 875                 if (rdata)
 876                         rdata->retries = lport->max_rport_retry_count;
 877                 return -EINVAL;
 878         }
 879         /* End NPIV filtering */
 880
 881         if (!qedf->ctlr.sel_fcf) {
 882                 kfree_skb(skb);
 883                 return 0;
 884         }
 885
 886         if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) {
 887                 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n");
 888                 kfree_skb(skb);
 889                 return 0;
 890         }
 891
 892         if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
 893                 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n");
 894                 kfree_skb(skb);
 895                 return 0;
 896         }
 897
 898         if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
 899                 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb))
 900                         return 0;
 901         }
 902
 903         /* Check to see if this needs to be sent on an offloaded session */
 904         fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
 905
 906         if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
 907                 rc = qedf_xmit_l2_frame(fcport, fp);
 908                 /*
 909                  * If the frame was successfully sent over the middle path
 910                  * then do not try to also send it over the LL2 path
 911                  */
 912                 if (rc)
 913                         return 0;
 914         }
 915
 916         sof = fr_sof(fp);
 917         eof = fr_eof(fp);
 918
 919         elen = sizeof(struct ethhdr);
 920         hlen = sizeof(struct fcoe_hdr);
 921         tlen = sizeof(struct fcoe_crc_eof);
 922         wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
 923
 924         skb->ip_summed = CHECKSUM_NONE;
 925         crc = fcoe_fc_crc(fp);
 926
 927         /* copy port crc and eof to the skb buff */
 928         if (skb_is_nonlinear(skb)) {
 929                 skb_frag_t *frag;
 930
 931                 if (qedf_get_paged_crc_eof(skb, tlen)) {
 932                         kfree_skb(skb);
 933                         return -ENOMEM;
 934                 }
 935                 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
 936                 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset;
 937         } else {
 938                 cp = skb_put(skb, tlen);
 939         }
 940
 941         memset(cp, 0, sizeof(*cp));
 942         cp->fcoe_eof = eof;
 943         cp->fcoe_crc32 = cpu_to_le32(~crc);
 944         if (skb_is_nonlinear(skb)) {
 945                 kunmap_atomic(cp);
 946                 cp = NULL;
 947         }
 948
 949
 950         /* adjust skb network/transport offsets to match mac/fcoe/port */
 951         skb_push(skb, elen + hlen);
 952         skb_reset_mac_header(skb);
 953         skb_reset_network_header(skb);
 954         skb->mac_len = elen;
 955         skb->protocol = htons(ETH_P_FCOE);
 956
 957         /*
 958          * Add VLAN tag to non-offload FCoE frame based on current stored VLAN
 959          * for FIP/FCoE traffic.
 960          */
 961         __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id);
 962
 963         /* fill up mac and fcoe headers */
 964         eh = eth_hdr(skb);
 965         eh->h_proto = htons(ETH_P_FCOE);
 966         if (qedf->ctlr.map_dest)
 967                 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
 968         else
 969                 /* insert GW address */
 970                 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr);
 971
 972         /* Set the source MAC address */
 973         ether_addr_copy(eh->h_source, qedf->data_src_addr);
 974
 975         hp = (struct fcoe_hdr *)(eh + 1);
 976         memset(hp, 0, sizeof(*hp));
 977         if (FC_FCOE_VER)
 978                 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
 979         hp->fcoe_sof = sof;
 980
 981         /*update tx stats */
 982         stats = per_cpu_ptr(lport->stats, get_cpu());
 983         stats->TxFrames++;
 984         stats->TxWords += wlen;
 985         put_cpu();
 986
 987         /* Get VLAN ID from skb for printing purposes */
 988         __vlan_hwaccel_get_tag(skb, &vlan_tci);
 989
 990         /* send down to lld */
 991         fr_dev(fp) = lport;
 992         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: "
 993             "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n",
 994             ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type,
 995             vlan_tci);
 996         if (qedf_dump_frames)
 997                 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
 998                     1, skb->data, skb->len, false);
 999         qed_ops->ll2->start_xmit(qedf->cdev, skb);
1000
1001         return 0;
1002 }
1003
1004 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1005 {
1006         int rval = 0;
1007         u32 *pbl;
1008         dma_addr_t page;
1009         int num_pages;
1010
1011         /* Calculate appropriate queue and PBL sizes */
1012         fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
1013         fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE);
1014         fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) *
1015             sizeof(void *);
1016         fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE;
1017
1018         fcport->sq = dma_zalloc_coherent(&qedf->pdev->dev,
1019             fcport->sq_mem_size, &fcport->sq_dma, GFP_KERNEL);
1020         if (!fcport->sq) {
1021                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n");
1022                 rval = 1;
1023                 goto out;
1024         }
1025
1026         fcport->sq_pbl = dma_zalloc_coherent(&qedf->pdev->dev,
1027             fcport->sq_pbl_size, &fcport->sq_pbl_dma, GFP_KERNEL);
1028         if (!fcport->sq_pbl) {
1029                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n");
1030                 rval = 1;
1031                 goto out_free_sq;
1032         }
1033
1034         /* Create PBL */
1035         num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE;
1036         page = fcport->sq_dma;
1037         pbl = (u32 *)fcport->sq_pbl;
1038
1039         while (num_pages--) {
1040                 *pbl = U64_LO(page);
1041                 pbl++;
1042                 *pbl = U64_HI(page);
1043                 pbl++;
1044                 page += QEDF_PAGE_SIZE;
1045         }
1046
1047         return rval;
1048
1049 out_free_sq:
1050         dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq,
1051             fcport->sq_dma);
1052 out:
1053         return rval;
1054 }
1055
1056 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1057 {
1058         if (fcport->sq_pbl)
1059                 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size,
1060                     fcport->sq_pbl, fcport->sq_pbl_dma);
1061         if (fcport->sq)
1062                 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1063                     fcport->sq, fcport->sq_dma);
1064 }
1065
1066 static int qedf_offload_connection(struct qedf_ctx *qedf,
1067         struct qedf_rport *fcport)
1068 {
1069         struct qed_fcoe_params_offload conn_info;
1070         u32 port_id;
1071         int rval;
1072         uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe));
1073
1074         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection "
1075                    "portid=%06x.\n", fcport->rdata->ids.port_id);
1076         rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle,
1077             &fcport->fw_cid, &fcport->p_doorbell);
1078         if (rval) {
1079                 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection "
1080                            "for portid=%06x.\n", fcport->rdata->ids.port_id);
1081                 rval = 1; /* For some reason qed returns 0 on failure here */
1082                 goto out;
1083         }
1084
1085         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x "
1086                    "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id,
1087                    fcport->fw_cid, fcport->handle);
1088
1089         memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload));
1090
1091         /* Fill in the offload connection info */
1092         conn_info.sq_pbl_addr = fcport->sq_pbl_dma;
1093
1094         conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl);
1095         conn_info.sq_next_page_addr =
1096             (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8));
1097
1098         /* Need to use our FCoE MAC for the offload session */
1099         ether_addr_copy(conn_info.src_mac, qedf->data_src_addr);
1100
1101         ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr);
1102
1103         conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size;
1104         conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov / 20;
1105         conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */
1106         conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size;
1107
1108         /* Set VLAN data */
1109         conn_info.vlan_tag = qedf->vlan_id <<
1110             FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT;
1111         conn_info.vlan_tag |=
1112             qedf_default_prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT;
1113         conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK <<
1114             FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT);
1115
1116         /* Set host port source id */
1117         port_id = fc_host_port_id(qedf->lport->host);
1118         fcport->sid = port_id;
1119         conn_info.s_id.addr_hi = (port_id & 0x000000FF);
1120         conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1121         conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1122
1123         conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq;
1124
1125         /* Set remote port destination id */
1126         port_id = fcport->rdata->rport->port_id;
1127         conn_info.d_id.addr_hi = (port_id & 0x000000FF);
1128         conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1129         conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1130
1131         conn_info.def_q_idx = 0; /* Default index for send queue? */
1132
1133         /* Set FC-TAPE specific flags if needed */
1134         if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) {
1135                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN,
1136                     "Enable CONF, REC for portid=%06x.\n",
1137                     fcport->rdata->ids.port_id);
1138                 conn_info.flags |= 1 <<
1139                     FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT;
1140                 conn_info.flags |=
1141                     ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
1142                     FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT;
1143         }
1144
1145         rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info);
1146         if (rval) {
1147                 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection "
1148                            "for portid=%06x.\n", fcport->rdata->ids.port_id);
1149                 goto out_free_conn;
1150         } else
1151                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload "
1152                            "succeeded portid=%06x total_sqe=%d.\n",
1153                            fcport->rdata->ids.port_id, total_sqe);
1154
1155         spin_lock_init(&fcport->rport_lock);
1156         atomic_set(&fcport->free_sqes, total_sqe);
1157         return 0;
1158 out_free_conn:
1159         qed_ops->release_conn(qedf->cdev, fcport->handle);
1160 out:
1161         return rval;
1162 }
1163
1164 #define QEDF_TERM_BUFF_SIZE             10
1165 static void qedf_upload_connection(struct qedf_ctx *qedf,
1166         struct qedf_rport *fcport)
1167 {
1168         void *term_params;
1169         dma_addr_t term_params_dma;
1170
1171         /* Term params needs to be a DMA coherent buffer as qed shared the
1172          * physical DMA address with the firmware. The buffer may be used in
1173          * the receive path so we may eventually have to move this.
1174          */
1175         term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE,
1176                 &term_params_dma, GFP_KERNEL);
1177
1178         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection "
1179                    "port_id=%06x.\n", fcport->rdata->ids.port_id);
1180
1181         qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma);
1182         qed_ops->release_conn(qedf->cdev, fcport->handle);
1183
1184         dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params,
1185             term_params_dma);
1186 }
1187
1188 static void qedf_cleanup_fcport(struct qedf_ctx *qedf,
1189         struct qedf_rport *fcport)
1190 {
1191         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n",
1192             fcport->rdata->ids.port_id);
1193
1194         /* Flush any remaining i/o's before we upload the connection */
1195         qedf_flush_active_ios(fcport, -1);
1196
1197         if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags))
1198                 qedf_upload_connection(qedf, fcport);
1199         qedf_free_sq(qedf, fcport);
1200         fcport->rdata = NULL;
1201         fcport->qedf = NULL;
1202 }
1203
1204 /**
1205  * This event_callback is called after successful completion of libfc
1206  * initiated target login. qedf can proceed with initiating the session
1207  * establishment.
1208  */
1209 static void qedf_rport_event_handler(struct fc_lport *lport,
1210                                 struct fc_rport_priv *rdata,
1211                                 enum fc_rport_event event)
1212 {
1213         struct qedf_ctx *qedf = lport_priv(lport);
1214         struct fc_rport *rport = rdata->rport;
1215         struct fc_rport_libfc_priv *rp;
1216         struct qedf_rport *fcport;
1217         u32 port_id;
1218         int rval;
1219         unsigned long flags;
1220
1221         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, "
1222                    "port_id = 0x%x\n", event, rdata->ids.port_id);
1223
1224         switch (event) {
1225         case RPORT_EV_READY:
1226                 if (!rport) {
1227                         QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n");
1228                         break;
1229                 }
1230
1231                 rp = rport->dd_data;
1232                 fcport = (struct qedf_rport *)&rp[1];
1233                 fcport->qedf = qedf;
1234
1235                 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) {
1236                         QEDF_ERR(&(qedf->dbg_ctx), "Not offloading "
1237                             "portid=0x%x as max number of offloaded sessions "
1238                             "reached.\n", rdata->ids.port_id);
1239                         return;
1240                 }
1241
1242                 /*
1243                  * Don't try to offload the session again. Can happen when we
1244                  * get an ADISC
1245                  */
1246                 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1247                         QEDF_WARN(&(qedf->dbg_ctx), "Session already "
1248                                    "offloaded, portid=0x%x.\n",
1249                                    rdata->ids.port_id);
1250                         return;
1251                 }
1252
1253                 if (rport->port_id == FC_FID_DIR_SERV) {
1254                         /*
1255                          * qedf_rport structure doesn't exist for
1256                          * directory server.
1257                          * We should not come here, as lport will
1258                          * take care of fabric login
1259                          */
1260                         QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not "
1261                             "exist for dir server port_id=%x\n",
1262                             rdata->ids.port_id);
1263                         break;
1264                 }
1265
1266                 if (rdata->spp_type != FC_TYPE_FCP) {
1267                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1268                             "Not offloading since spp type isn't FCP\n");
1269                         break;
1270                 }
1271                 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
1272                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1273                             "Not FCP target so not offloading\n");
1274                         break;
1275                 }
1276
1277                 fcport->rdata = rdata;
1278                 fcport->rport = rport;
1279
1280                 rval = qedf_alloc_sq(qedf, fcport);
1281                 if (rval) {
1282                         qedf_cleanup_fcport(qedf, fcport);
1283                         break;
1284                 }
1285
1286                 /* Set device type */
1287                 if (rdata->flags & FC_RP_FLAGS_RETRY &&
1288                     rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET &&
1289                     !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) {
1290                         fcport->dev_type = QEDF_RPORT_TYPE_TAPE;
1291                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1292                             "portid=%06x is a TAPE device.\n",
1293                             rdata->ids.port_id);
1294                 } else {
1295                         fcport->dev_type = QEDF_RPORT_TYPE_DISK;
1296                 }
1297
1298                 rval = qedf_offload_connection(qedf, fcport);
1299                 if (rval) {
1300                         qedf_cleanup_fcport(qedf, fcport);
1301                         break;
1302                 }
1303
1304                 /* Add fcport to list of qedf_ctx list of offloaded ports */
1305                 spin_lock_irqsave(&qedf->hba_lock, flags);
1306                 list_add_rcu(&fcport->peers, &qedf->fcports);
1307                 spin_unlock_irqrestore(&qedf->hba_lock, flags);
1308
1309                 /*
1310                  * Set the session ready bit to let everyone know that this
1311                  * connection is ready for I/O
1312                  */
1313                 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags);
1314                 atomic_inc(&qedf->num_offloads);
1315
1316                 break;
1317         case RPORT_EV_LOGO:
1318         case RPORT_EV_FAILED:
1319         case RPORT_EV_STOP:
1320                 port_id = rdata->ids.port_id;
1321                 if (port_id == FC_FID_DIR_SERV)
1322                         break;
1323
1324                 if (!rport) {
1325                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1326                             "port_id=%x - rport notcreated Yet!!\n", port_id);
1327                         break;
1328                 }
1329                 rp = rport->dd_data;
1330                 /*
1331                  * Perform session upload. Note that rdata->peers is already
1332                  * removed from disc->rports list before we get this event.
1333                  */
1334                 fcport = (struct qedf_rport *)&rp[1];
1335
1336                 /* Only free this fcport if it is offloaded already */
1337                 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1338                         set_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags);
1339                         qedf_cleanup_fcport(qedf, fcport);
1340
1341                         /*
1342                          * Remove fcport to list of qedf_ctx list of offloaded
1343                          * ports
1344                          */
1345                         spin_lock_irqsave(&qedf->hba_lock, flags);
1346                         list_del_rcu(&fcport->peers);
1347                         spin_unlock_irqrestore(&qedf->hba_lock, flags);
1348
1349                         clear_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1350                             &fcport->flags);
1351                         atomic_dec(&qedf->num_offloads);
1352                 }
1353
1354                 break;
1355
1356         case RPORT_EV_NONE:
1357                 break;
1358         }
1359 }
1360
1361 static void qedf_abort_io(struct fc_lport *lport)
1362 {
1363         /* NO-OP but need to fill in the template */
1364 }
1365
1366 static void qedf_fcp_cleanup(struct fc_lport *lport)
1367 {
1368         /*
1369          * NO-OP but need to fill in template to prevent a NULL
1370          * function pointer dereference during link down. I/Os
1371          * will be flushed when port is uploaded.
1372          */
1373 }
1374
1375 static struct libfc_function_template qedf_lport_template = {
1376         .frame_send             = qedf_xmit,
1377         .fcp_abort_io           = qedf_abort_io,
1378         .fcp_cleanup            = qedf_fcp_cleanup,
1379         .rport_event_callback   = qedf_rport_event_handler,
1380         .elsct_send             = qedf_elsct_send,
1381 };
1382
1383 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf)
1384 {
1385         fcoe_ctlr_init(&qedf->ctlr, FIP_MODE_AUTO);
1386
1387         qedf->ctlr.send = qedf_fip_send;
1388         qedf->ctlr.get_src_addr = qedf_get_src_mac;
1389         ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac);
1390 }
1391
1392 static void qedf_setup_fdmi(struct qedf_ctx *qedf)
1393 {
1394         struct fc_lport *lport = qedf->lport;
1395         struct fc_host_attrs *fc_host = shost_to_fc_host(lport->host);
1396         u8 buf[8];
1397         int i, pos;
1398
1399         /*
1400          * fdmi_enabled needs to be set for libfc to execute FDMI registration.
1401          */
1402         lport->fdmi_enabled = 1;
1403
1404         /*
1405          * Setup the necessary fc_host attributes to that will be used to fill
1406          * in the FDMI information.
1407          */
1408
1409         /* Get the PCI-e Device Serial Number Capability */
1410         pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN);
1411         if (pos) {
1412                 pos += 4;
1413                 for (i = 0; i < 8; i++)
1414                         pci_read_config_byte(qedf->pdev, pos + i, &buf[i]);
1415
1416                 snprintf(fc_host->serial_number,
1417                     sizeof(fc_host->serial_number),
1418                     "%02X%02X%02X%02X%02X%02X%02X%02X",
1419                     buf[7], buf[6], buf[5], buf[4],
1420                     buf[3], buf[2], buf[1], buf[0]);
1421         } else
1422                 snprintf(fc_host->serial_number,
1423                     sizeof(fc_host->serial_number), "Unknown");
1424
1425         snprintf(fc_host->manufacturer,
1426             sizeof(fc_host->manufacturer), "%s", "Cavium Inc.");
1427
1428         snprintf(fc_host->model, sizeof(fc_host->model), "%s", "QL41000");
1429
1430         snprintf(fc_host->model_description, sizeof(fc_host->model_description),
1431             "%s", "QLogic FastLinQ QL41000 Series 10/25/40/50GGbE Controller"
1432             "(FCoE)");
1433
1434         snprintf(fc_host->hardware_version, sizeof(fc_host->hardware_version),
1435             "Rev %d", qedf->pdev->revision);
1436
1437         snprintf(fc_host->driver_version, sizeof(fc_host->driver_version),
1438             "%s", QEDF_VERSION);
1439
1440         snprintf(fc_host->firmware_version, sizeof(fc_host->firmware_version),
1441             "%d.%d.%d.%d", FW_MAJOR_VERSION, FW_MINOR_VERSION,
1442             FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
1443 }
1444
1445 static int qedf_lport_setup(struct qedf_ctx *qedf)
1446 {
1447         struct fc_lport *lport = qedf->lport;
1448
1449         lport->link_up = 0;
1450         lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1451         lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1452         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1453             FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1454         lport->boot_time = jiffies;
1455         lport->e_d_tov = 2 * 1000;
1456         lport->r_a_tov = 10 * 1000;
1457
1458         /* Set NPIV support */
1459         lport->does_npiv = 1;
1460         fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV;
1461
1462         fc_set_wwnn(lport, qedf->wwnn);
1463         fc_set_wwpn(lport, qedf->wwpn);
1464
1465         fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0);
1466
1467         /* Allocate the exchange manager */
1468         fc_exch_mgr_alloc(lport, FC_CLASS_3, qedf->max_scsi_xid + 1,
1469             qedf->max_els_xid, NULL);
1470
1471         if (fc_lport_init_stats(lport))
1472                 return -ENOMEM;
1473
1474         /* Finish lport config */
1475         fc_lport_config(lport);
1476
1477         /* Set max frame size */
1478         fc_set_mfs(lport, QEDF_MFS);
1479         fc_host_maxframe_size(lport->host) = lport->mfs;
1480
1481         /* Set default dev_loss_tmo based on module parameter */
1482         fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo;
1483
1484         /* Set symbolic node name */
1485         snprintf(fc_host_symbolic_name(lport->host), 256,
1486             "QLogic %s v%s", QEDF_MODULE_NAME, QEDF_VERSION);
1487
1488         qedf_setup_fdmi(qedf);
1489
1490         return 0;
1491 }
1492
1493 /*
1494  * NPIV functions
1495  */
1496
1497 static int qedf_vport_libfc_config(struct fc_vport *vport,
1498         struct fc_lport *lport)
1499 {
1500         lport->link_up = 0;
1501         lport->qfull = 0;
1502         lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1503         lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1504         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1505             FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1506         lport->boot_time = jiffies;
1507         lport->e_d_tov = 2 * 1000;
1508         lport->r_a_tov = 10 * 1000;
1509         lport->does_npiv = 1; /* Temporary until we add NPIV support */
1510
1511         /* Allocate stats for vport */
1512         if (fc_lport_init_stats(lport))
1513                 return -ENOMEM;
1514
1515         /* Finish lport config */
1516         fc_lport_config(lport);
1517
1518         /* offload related configuration */
1519         lport->crc_offload = 0;
1520         lport->seq_offload = 0;
1521         lport->lro_enabled = 0;
1522         lport->lro_xid = 0;
1523         lport->lso_max = 0;
1524
1525         return 0;
1526 }
1527
1528 static int qedf_vport_create(struct fc_vport *vport, bool disabled)
1529 {
1530         struct Scsi_Host *shost = vport_to_shost(vport);
1531         struct fc_lport *n_port = shost_priv(shost);
1532         struct fc_lport *vn_port;
1533         struct qedf_ctx *base_qedf = lport_priv(n_port);
1534         struct qedf_ctx *vport_qedf;
1535
1536         char buf[32];
1537         int rc = 0;
1538
1539         rc = fcoe_validate_vport_create(vport);
1540         if (rc) {
1541                 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1542                 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, "
1543                            "WWPN (0x%s) already exists.\n", buf);
1544                 goto err1;
1545         }
1546
1547         if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) {
1548                 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport "
1549                            "because link is not up.\n");
1550                 rc = -EIO;
1551                 goto err1;
1552         }
1553
1554         vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx));
1555         if (!vn_port) {
1556                 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport "
1557                            "for vport.\n");
1558                 rc = -ENOMEM;
1559                 goto err1;
1560         }
1561
1562         fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1563         QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n",
1564             buf);
1565
1566         /* Copy some fields from base_qedf */
1567         vport_qedf = lport_priv(vn_port);
1568         memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx));
1569
1570         /* Set qedf data specific to this vport */
1571         vport_qedf->lport = vn_port;
1572         /* Use same hba_lock as base_qedf */
1573         vport_qedf->hba_lock = base_qedf->hba_lock;
1574         vport_qedf->pdev = base_qedf->pdev;
1575         vport_qedf->cmd_mgr = base_qedf->cmd_mgr;
1576         init_completion(&vport_qedf->flogi_compl);
1577         INIT_LIST_HEAD(&vport_qedf->fcports);
1578
1579         rc = qedf_vport_libfc_config(vport, vn_port);
1580         if (rc) {
1581                 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory "
1582                     "for lport stats.\n");
1583                 goto err2;
1584         }
1585
1586         fc_set_wwnn(vn_port, vport->node_name);
1587         fc_set_wwpn(vn_port, vport->port_name);
1588         vport_qedf->wwnn = vn_port->wwnn;
1589         vport_qedf->wwpn = vn_port->wwpn;
1590
1591         vn_port->host->transportt = qedf_fc_vport_transport_template;
1592         vn_port->host->can_queue = QEDF_MAX_ELS_XID;
1593         vn_port->host->max_lun = qedf_max_lun;
1594         vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD;
1595         vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN;
1596
1597         rc = scsi_add_host(vn_port->host, &vport->dev);
1598         if (rc) {
1599                 QEDF_WARN(&(base_qedf->dbg_ctx), "Error adding Scsi_Host.\n");
1600                 goto err2;
1601         }
1602
1603         /* Set default dev_loss_tmo based on module parameter */
1604         fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo;
1605
1606         /* Init libfc stuffs */
1607         memcpy(&vn_port->tt, &qedf_lport_template,
1608                 sizeof(qedf_lport_template));
1609         fc_exch_init(vn_port);
1610         fc_elsct_init(vn_port);
1611         fc_lport_init(vn_port);
1612         fc_disc_init(vn_port);
1613         fc_disc_config(vn_port, vn_port);
1614
1615
1616         /* Allocate the exchange manager */
1617         shost = vport_to_shost(vport);
1618         n_port = shost_priv(shost);
1619         fc_exch_mgr_list_clone(n_port, vn_port);
1620
1621         /* Set max frame size */
1622         fc_set_mfs(vn_port, QEDF_MFS);
1623
1624         fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN;
1625
1626         if (disabled) {
1627                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1628         } else {
1629                 vn_port->boot_time = jiffies;
1630                 fc_fabric_login(vn_port);
1631                 fc_vport_setlink(vn_port);
1632         }
1633
1634         QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n",
1635                    vn_port);
1636
1637         /* Set up debug context for vport */
1638         vport_qedf->dbg_ctx.host_no = vn_port->host->host_no;
1639         vport_qedf->dbg_ctx.pdev = base_qedf->pdev;
1640
1641 err2:
1642         scsi_host_put(vn_port->host);
1643 err1:
1644         return rc;
1645 }
1646
1647 static int qedf_vport_destroy(struct fc_vport *vport)
1648 {
1649         struct Scsi_Host *shost = vport_to_shost(vport);
1650         struct fc_lport *n_port = shost_priv(shost);
1651         struct fc_lport *vn_port = vport->dd_data;
1652         struct qedf_ctx *qedf = lport_priv(vn_port);
1653
1654         if (!qedf) {
1655                 QEDF_ERR(NULL, "qedf is NULL.\n");
1656                 goto out;
1657         }
1658
1659         /* Set unloading bit on vport qedf_ctx to prevent more I/O */
1660         set_bit(QEDF_UNLOADING, &qedf->flags);
1661
1662         mutex_lock(&n_port->lp_mutex);
1663         list_del(&vn_port->list);
1664         mutex_unlock(&n_port->lp_mutex);
1665
1666         fc_fabric_logoff(vn_port);
1667         fc_lport_destroy(vn_port);
1668
1669         /* Detach from scsi-ml */
1670         fc_remove_host(vn_port->host);
1671         scsi_remove_host(vn_port->host);
1672
1673         /*
1674          * Only try to release the exchange manager if the vn_port
1675          * configuration is complete.
1676          */
1677         if (vn_port->state == LPORT_ST_READY)
1678                 fc_exch_mgr_free(vn_port);
1679
1680         /* Free memory used by statistical counters */
1681         fc_lport_free_stats(vn_port);
1682
1683         /* Release Scsi_Host */
1684         if (vn_port->host)
1685                 scsi_host_put(vn_port->host);
1686
1687 out:
1688         return 0;
1689 }
1690
1691 static int qedf_vport_disable(struct fc_vport *vport, bool disable)
1692 {
1693         struct fc_lport *lport = vport->dd_data;
1694
1695         if (disable) {
1696                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1697                 fc_fabric_logoff(lport);
1698         } else {
1699                 lport->boot_time = jiffies;
1700                 fc_fabric_login(lport);
1701                 fc_vport_setlink(lport);
1702         }
1703         return 0;
1704 }
1705
1706 /*
1707  * During removal we need to wait for all the vports associated with a port
1708  * to be destroyed so we avoid a race condition where libfc is still trying
1709  * to reap vports while the driver remove function has already reaped the
1710  * driver contexts associated with the physical port.
1711  */
1712 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf)
1713 {
1714         struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host);
1715
1716         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
1717             "Entered.\n");
1718         while (fc_host->npiv_vports_inuse > 0) {
1719                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
1720                     "Waiting for all vports to be reaped.\n");
1721                 msleep(1000);
1722         }
1723 }
1724
1725 /**
1726  * qedf_fcoe_reset - Resets the fcoe
1727  *
1728  * @shost: shost the reset is from
1729  *
1730  * Returns: always 0
1731  */
1732 static int qedf_fcoe_reset(struct Scsi_Host *shost)
1733 {
1734         struct fc_lport *lport = shost_priv(shost);
1735
1736         qedf_ctx_soft_reset(lport);
1737         return 0;
1738 }
1739
1740 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host
1741         *shost)
1742 {
1743         struct fc_host_statistics *qedf_stats;
1744         struct fc_lport *lport = shost_priv(shost);
1745         struct qedf_ctx *qedf = lport_priv(lport);
1746         struct qed_fcoe_stats *fw_fcoe_stats;
1747
1748         qedf_stats = fc_get_host_stats(shost);
1749
1750         /* We don't collect offload stats for specific NPIV ports */
1751         if (lport->vport)
1752                 goto out;
1753
1754         fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL);
1755         if (!fw_fcoe_stats) {
1756                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for "
1757                     "fw_fcoe_stats.\n");
1758                 goto out;
1759         }
1760
1761         /* Query firmware for offload stats */
1762         qed_ops->get_stats(qedf->cdev, fw_fcoe_stats);
1763
1764         /*
1765          * The expectation is that we add our offload stats to the stats
1766          * being maintained by libfc each time the fc_get_host_status callback
1767          * is invoked. The additions are not carried over for each call to
1768          * the fc_get_host_stats callback.
1769          */
1770         qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt +
1771             fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt +
1772             fw_fcoe_stats->fcoe_tx_other_pkt_cnt;
1773         qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt +
1774             fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt +
1775             fw_fcoe_stats->fcoe_rx_other_pkt_cnt;
1776         qedf_stats->fcp_input_megabytes +=
1777             do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000);
1778         qedf_stats->fcp_output_megabytes +=
1779             do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000);
1780         qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4;
1781         qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4;
1782         qedf_stats->invalid_crc_count +=
1783             fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt;
1784         qedf_stats->dumped_frames =
1785             fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
1786         qedf_stats->error_frames +=
1787             fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
1788         qedf_stats->fcp_input_requests += qedf->input_requests;
1789         qedf_stats->fcp_output_requests += qedf->output_requests;
1790         qedf_stats->fcp_control_requests += qedf->control_requests;
1791         qedf_stats->fcp_packet_aborts += qedf->packet_aborts;
1792         qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures;
1793
1794         kfree(fw_fcoe_stats);
1795 out:
1796         return qedf_stats;
1797 }
1798
1799 static struct fc_function_template qedf_fc_transport_fn = {
1800         .show_host_node_name = 1,
1801         .show_host_port_name = 1,
1802         .show_host_supported_classes = 1,
1803         .show_host_supported_fc4s = 1,
1804         .show_host_active_fc4s = 1,
1805         .show_host_maxframe_size = 1,
1806
1807         .show_host_port_id = 1,
1808         .show_host_supported_speeds = 1,
1809         .get_host_speed = fc_get_host_speed,
1810         .show_host_speed = 1,
1811         .show_host_port_type = 1,
1812         .get_host_port_state = fc_get_host_port_state,
1813         .show_host_port_state = 1,
1814         .show_host_symbolic_name = 1,
1815
1816         /*
1817          * Tell FC transport to allocate enough space to store the backpointer
1818          * for the associate qedf_rport struct.
1819          */
1820         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
1821                                 sizeof(struct qedf_rport)),
1822         .show_rport_maxframe_size = 1,
1823         .show_rport_supported_classes = 1,
1824         .show_host_fabric_name = 1,
1825         .show_starget_node_name = 1,
1826         .show_starget_port_name = 1,
1827         .show_starget_port_id = 1,
1828         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
1829         .show_rport_dev_loss_tmo = 1,
1830         .get_fc_host_stats = qedf_fc_get_host_stats,
1831         .issue_fc_host_lip = qedf_fcoe_reset,
1832         .vport_create = qedf_vport_create,
1833         .vport_delete = qedf_vport_destroy,
1834         .vport_disable = qedf_vport_disable,
1835         .bsg_request = fc_lport_bsg_request,
1836 };
1837
1838 static struct fc_function_template qedf_fc_vport_transport_fn = {
1839         .show_host_node_name = 1,
1840         .show_host_port_name = 1,
1841         .show_host_supported_classes = 1,
1842         .show_host_supported_fc4s = 1,
1843         .show_host_active_fc4s = 1,
1844         .show_host_maxframe_size = 1,
1845         .show_host_port_id = 1,
1846         .show_host_supported_speeds = 1,
1847         .get_host_speed = fc_get_host_speed,
1848         .show_host_speed = 1,
1849         .show_host_port_type = 1,
1850         .get_host_port_state = fc_get_host_port_state,
1851         .show_host_port_state = 1,
1852         .show_host_symbolic_name = 1,
1853         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
1854                                 sizeof(struct qedf_rport)),
1855         .show_rport_maxframe_size = 1,
1856         .show_rport_supported_classes = 1,
1857         .show_host_fabric_name = 1,
1858         .show_starget_node_name = 1,
1859         .show_starget_port_name = 1,
1860         .show_starget_port_id = 1,
1861         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
1862         .show_rport_dev_loss_tmo = 1,
1863         .get_fc_host_stats = fc_get_host_stats,
1864         .issue_fc_host_lip = qedf_fcoe_reset,
1865         .bsg_request = fc_lport_bsg_request,
1866 };
1867
1868 static bool qedf_fp_has_work(struct qedf_fastpath *fp)
1869 {
1870         struct qedf_ctx *qedf = fp->qedf;
1871         struct global_queue *que;
1872         struct qed_sb_info *sb_info = fp->sb_info;
1873         struct status_block *sb = sb_info->sb_virt;
1874         u16 prod_idx;
1875
1876         /* Get the pointer to the global CQ this completion is on */
1877         que = qedf->global_queues[fp->sb_id];
1878
1879         /* Be sure all responses have been written to PI */
1880         rmb();
1881
1882         /* Get the current firmware producer index */
1883         prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
1884
1885         return (que->cq_prod_idx != prod_idx);
1886 }
1887
1888 /*
1889  * Interrupt handler code.
1890  */
1891
1892 /* Process completion queue and copy CQE contents for deferred processesing
1893  *
1894  * Return true if we should wake the I/O thread, false if not.
1895  */
1896 static bool qedf_process_completions(struct qedf_fastpath *fp)
1897 {
1898         struct qedf_ctx *qedf = fp->qedf;
1899         struct qed_sb_info *sb_info = fp->sb_info;
1900         struct status_block *sb = sb_info->sb_virt;
1901         struct global_queue *que;
1902         u16 prod_idx;
1903         struct fcoe_cqe *cqe;
1904         struct qedf_io_work *io_work;
1905         int num_handled = 0;
1906         unsigned int cpu;
1907         struct qedf_ioreq *io_req = NULL;
1908         u16 xid;
1909         u16 new_cqes;
1910         u32 comp_type;
1911
1912         /* Get the current firmware producer index */
1913         prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
1914
1915         /* Get the pointer to the global CQ this completion is on */
1916         que = qedf->global_queues[fp->sb_id];
1917
1918         /* Calculate the amount of new elements since last processing */
1919         new_cqes = (prod_idx >= que->cq_prod_idx) ?
1920             (prod_idx - que->cq_prod_idx) :
1921             0x10000 - que->cq_prod_idx + prod_idx;
1922
1923         /* Save producer index */
1924         que->cq_prod_idx = prod_idx;
1925
1926         while (new_cqes) {
1927                 fp->completions++;
1928                 num_handled++;
1929                 cqe = &que->cq[que->cq_cons_idx];
1930
1931                 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
1932                     FCOE_CQE_CQE_TYPE_MASK;
1933
1934                 /*
1935                  * Process unsolicited CQEs directly in the interrupt handler
1936                  * sine we need the fastpath ID
1937                  */
1938                 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) {
1939                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL,
1940                            "Unsolicated CQE.\n");
1941                         qedf_process_unsol_compl(qedf, fp->sb_id, cqe);
1942                         /*
1943                          * Don't add a work list item.  Increment consumer
1944                          * consumer index and move on.
1945                          */
1946                         goto inc_idx;
1947                 }
1948
1949                 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
1950                 io_req = &qedf->cmd_mgr->cmds[xid];
1951
1952                 /*
1953                  * Figure out which percpu thread we should queue this I/O
1954                  * on.
1955                  */
1956                 if (!io_req)
1957                         /* If there is not io_req assocated with this CQE
1958                          * just queue it on CPU 0
1959                          */
1960                         cpu = 0;
1961                 else {
1962                         cpu = io_req->cpu;
1963                         io_req->int_cpu = smp_processor_id();
1964                 }
1965
1966                 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC);
1967                 if (!io_work) {
1968                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate "
1969                                    "work for I/O completion.\n");
1970                         continue;
1971                 }
1972                 memset(io_work, 0, sizeof(struct qedf_io_work));
1973
1974                 INIT_WORK(&io_work->work, qedf_fp_io_handler);
1975
1976                 /* Copy contents of CQE for deferred processing */
1977                 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe));
1978
1979                 io_work->qedf = fp->qedf;
1980                 io_work->fp = NULL; /* Only used for unsolicited frames */
1981
1982                 queue_work_on(cpu, qedf_io_wq, &io_work->work);
1983
1984 inc_idx:
1985                 que->cq_cons_idx++;
1986                 if (que->cq_cons_idx == fp->cq_num_entries)
1987                         que->cq_cons_idx = 0;
1988                 new_cqes--;
1989         }
1990
1991         return true;
1992 }
1993
1994
1995 /* MSI-X fastpath handler code */
1996 static irqreturn_t qedf_msix_handler(int irq, void *dev_id)
1997 {
1998         struct qedf_fastpath *fp = dev_id;
1999
2000         if (!fp) {
2001                 QEDF_ERR(NULL, "fp is null.\n");
2002                 return IRQ_HANDLED;
2003         }
2004         if (!fp->sb_info) {
2005                 QEDF_ERR(NULL, "fp->sb_info in null.");
2006                 return IRQ_HANDLED;
2007         }
2008
2009         /*
2010          * Disable interrupts for this status block while we process new
2011          * completions
2012          */
2013         qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/);
2014
2015         while (1) {
2016                 qedf_process_completions(fp);
2017
2018                 if (qedf_fp_has_work(fp) == 0) {
2019                         /* Update the sb information */
2020                         qed_sb_update_sb_idx(fp->sb_info);
2021
2022                         /* Check for more work */
2023                         rmb();
2024
2025                         if (qedf_fp_has_work(fp) == 0) {
2026                                 /* Re-enable interrupts */
2027                                 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
2028                                 return IRQ_HANDLED;
2029                         }
2030                 }
2031         }
2032
2033         /* Do we ever want to break out of above loop? */
2034         return IRQ_HANDLED;
2035 }
2036
2037 /* simd handler for MSI/INTa */
2038 static void qedf_simd_int_handler(void *cookie)
2039 {
2040         /* Cookie is qedf_ctx struct */
2041         struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2042
2043         QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf);
2044 }
2045
2046 #define QEDF_SIMD_HANDLER_NUM           0
2047 static void qedf_sync_free_irqs(struct qedf_ctx *qedf)
2048 {
2049         int i;
2050
2051         if (qedf->int_info.msix_cnt) {
2052                 for (i = 0; i < qedf->int_info.used_cnt; i++) {
2053                         synchronize_irq(qedf->int_info.msix[i].vector);
2054                         irq_set_affinity_hint(qedf->int_info.msix[i].vector,
2055                             NULL);
2056                         irq_set_affinity_notifier(qedf->int_info.msix[i].vector,
2057                             NULL);
2058                         free_irq(qedf->int_info.msix[i].vector,
2059                             &qedf->fp_array[i]);
2060                 }
2061         } else
2062                 qed_ops->common->simd_handler_clean(qedf->cdev,
2063                     QEDF_SIMD_HANDLER_NUM);
2064
2065         qedf->int_info.used_cnt = 0;
2066         qed_ops->common->set_fp_int(qedf->cdev, 0);
2067 }
2068
2069 static int qedf_request_msix_irq(struct qedf_ctx *qedf)
2070 {
2071         int i, rc, cpu;
2072
2073         cpu = cpumask_first(cpu_online_mask);
2074         for (i = 0; i < qedf->num_queues; i++) {
2075                 rc = request_irq(qedf->int_info.msix[i].vector,
2076                     qedf_msix_handler, 0, "qedf", &qedf->fp_array[i]);
2077
2078                 if (rc) {
2079                         QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n");
2080                         qedf_sync_free_irqs(qedf);
2081                         return rc;
2082                 }
2083
2084                 qedf->int_info.used_cnt++;
2085                 rc = irq_set_affinity_hint(qedf->int_info.msix[i].vector,
2086                     get_cpu_mask(cpu));
2087                 cpu = cpumask_next(cpu, cpu_online_mask);
2088         }
2089
2090         return 0;
2091 }
2092
2093 static int qedf_setup_int(struct qedf_ctx *qedf)
2094 {
2095         int rc = 0;
2096
2097         /*
2098          * Learn interrupt configuration
2099          */
2100         rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus());
2101         if (rc <= 0)
2102                 return 0;
2103
2104         rc  = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info);
2105         if (rc)
2106                 return 0;
2107
2108         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = "
2109                    "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt,
2110                    num_online_cpus());
2111
2112         if (qedf->int_info.msix_cnt)
2113                 return qedf_request_msix_irq(qedf);
2114
2115         qed_ops->common->simd_handler_config(qedf->cdev, &qedf,
2116             QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler);
2117         qedf->int_info.used_cnt = 1;
2118
2119         return 0;
2120 }
2121
2122 /* Main function for libfc frame reception */
2123 static void qedf_recv_frame(struct qedf_ctx *qedf,
2124         struct sk_buff *skb)
2125 {
2126         u32 fr_len;
2127         struct fc_lport *lport;
2128         struct fc_frame_header *fh;
2129         struct fcoe_crc_eof crc_eof;
2130         struct fc_frame *fp;
2131         u8 *mac = NULL;
2132         u8 *dest_mac = NULL;
2133         struct fcoe_hdr *hp;
2134         struct qedf_rport *fcport;
2135         struct fc_lport *vn_port;
2136         u32 f_ctl;
2137
2138         lport = qedf->lport;
2139         if (lport == NULL || lport->state == LPORT_ST_DISABLED) {
2140                 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n");
2141                 kfree_skb(skb);
2142                 return;
2143         }
2144
2145         if (skb_is_nonlinear(skb))
2146                 skb_linearize(skb);
2147         mac = eth_hdr(skb)->h_source;
2148         dest_mac = eth_hdr(skb)->h_dest;
2149
2150         /* Pull the header */
2151         hp = (struct fcoe_hdr *)skb->data;
2152         fh = (struct fc_frame_header *) skb_transport_header(skb);
2153         skb_pull(skb, sizeof(struct fcoe_hdr));
2154         fr_len = skb->len - sizeof(struct fcoe_crc_eof);
2155
2156         fp = (struct fc_frame *)skb;
2157         fc_frame_init(fp);
2158         fr_dev(fp) = lport;
2159         fr_sof(fp) = hp->fcoe_sof;
2160         if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
2161                 kfree_skb(skb);
2162                 return;
2163         }
2164         fr_eof(fp) = crc_eof.fcoe_eof;
2165         fr_crc(fp) = crc_eof.fcoe_crc32;
2166         if (pskb_trim(skb, fr_len)) {
2167                 kfree_skb(skb);
2168                 return;
2169         }
2170
2171         fh = fc_frame_header_get(fp);
2172
2173         /*
2174          * Invalid frame filters.
2175          */
2176
2177         if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
2178             fh->fh_type == FC_TYPE_FCP) {
2179                 /* Drop FCP data. We dont this in L2 path */
2180                 kfree_skb(skb);
2181                 return;
2182         }
2183         if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
2184             fh->fh_type == FC_TYPE_ELS) {
2185                 switch (fc_frame_payload_op(fp)) {
2186                 case ELS_LOGO:
2187                         if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
2188                                 /* drop non-FIP LOGO */
2189                                 kfree_skb(skb);
2190                                 return;
2191                         }
2192                         break;
2193                 }
2194         }
2195
2196         if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
2197                 /* Drop incoming ABTS */
2198                 kfree_skb(skb);
2199                 return;
2200         }
2201
2202         if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
2203                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2204                     "FC frame d_id mismatch with MAC %pM.\n", dest_mac);
2205                 return;
2206         }
2207
2208         if (qedf->ctlr.state) {
2209                 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) {
2210                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2211                             "Wrong source address: mac:%pM dest_addr:%pM.\n",
2212                             mac, qedf->ctlr.dest_addr);
2213                         kfree_skb(skb);
2214                         return;
2215                 }
2216         }
2217
2218         vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
2219
2220         /*
2221          * If the destination ID from the frame header does not match what we
2222          * have on record for lport and the search for a NPIV port came up
2223          * empty then this is not addressed to our port so simply drop it.
2224          */
2225         if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
2226                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2227                     "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n",
2228                     lport->port_id, ntoh24(fh->fh_d_id));
2229                 kfree_skb(skb);
2230                 return;
2231         }
2232
2233         f_ctl = ntoh24(fh->fh_f_ctl);
2234         if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) &&
2235             (f_ctl & FC_FC_EX_CTX)) {
2236                 /* Drop incoming ABTS response that has both SEQ/EX CTX set */
2237                 kfree_skb(skb);
2238                 return;
2239         }
2240
2241         /*
2242          * If a connection is uploading, drop incoming FCoE frames as there
2243          * is a small window where we could try to return a frame while libfc
2244          * is trying to clean things up.
2245          */
2246
2247         /* Get fcport associated with d_id if it exists */
2248         fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
2249
2250         if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
2251             &fcport->flags)) {
2252                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2253                     "Connection uploading, dropping fp=%p.\n", fp);
2254                 kfree_skb(skb);
2255                 return;
2256         }
2257
2258         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: "
2259             "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp,
2260             ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl,
2261             fh->fh_type);
2262         if (qedf_dump_frames)
2263                 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
2264                     1, skb->data, skb->len, false);
2265         fc_exch_recv(lport, fp);
2266 }
2267
2268 static void qedf_ll2_process_skb(struct work_struct *work)
2269 {
2270         struct qedf_skb_work *skb_work =
2271             container_of(work, struct qedf_skb_work, work);
2272         struct qedf_ctx *qedf = skb_work->qedf;
2273         struct sk_buff *skb = skb_work->skb;
2274         struct ethhdr *eh;
2275
2276         if (!qedf) {
2277                 QEDF_ERR(NULL, "qedf is NULL\n");
2278                 goto err_out;
2279         }
2280
2281         eh = (struct ethhdr *)skb->data;
2282
2283         /* Undo VLAN encapsulation */
2284         if (eh->h_proto == htons(ETH_P_8021Q)) {
2285                 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
2286                 eh = skb_pull(skb, VLAN_HLEN);
2287                 skb_reset_mac_header(skb);
2288         }
2289
2290         /*
2291          * Process either a FIP frame or FCoE frame based on the
2292          * protocol value.  If it's not either just drop the
2293          * frame.
2294          */
2295         if (eh->h_proto == htons(ETH_P_FIP)) {
2296                 qedf_fip_recv(qedf, skb);
2297                 goto out;
2298         } else if (eh->h_proto == htons(ETH_P_FCOE)) {
2299                 __skb_pull(skb, ETH_HLEN);
2300                 qedf_recv_frame(qedf, skb);
2301                 goto out;
2302         } else
2303                 goto err_out;
2304
2305 err_out:
2306         kfree_skb(skb);
2307 out:
2308         kfree(skb_work);
2309         return;
2310 }
2311
2312 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb,
2313         u32 arg1, u32 arg2)
2314 {
2315         struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2316         struct qedf_skb_work *skb_work;
2317
2318         skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC);
2319         if (!skb_work) {
2320                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so "
2321                            "dropping frame.\n");
2322                 kfree_skb(skb);
2323                 return 0;
2324         }
2325
2326         INIT_WORK(&skb_work->work, qedf_ll2_process_skb);
2327         skb_work->skb = skb;
2328         skb_work->qedf = qedf;
2329         queue_work(qedf->ll2_recv_wq, &skb_work->work);
2330
2331         return 0;
2332 }
2333
2334 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = {
2335         .rx_cb = qedf_ll2_rx,
2336         .tx_cb = NULL,
2337 };
2338
2339 /* Main thread to process I/O completions */
2340 void qedf_fp_io_handler(struct work_struct *work)
2341 {
2342         struct qedf_io_work *io_work =
2343             container_of(work, struct qedf_io_work, work);
2344         u32 comp_type;
2345
2346         /*
2347          * Deferred part of unsolicited CQE sends
2348          * frame to libfc.
2349          */
2350         comp_type = (io_work->cqe.cqe_data >>
2351             FCOE_CQE_CQE_TYPE_SHIFT) &
2352             FCOE_CQE_CQE_TYPE_MASK;
2353         if (comp_type == FCOE_UNSOLIC_CQE_TYPE &&
2354             io_work->fp)
2355                 fc_exch_recv(io_work->qedf->lport, io_work->fp);
2356         else
2357                 qedf_process_cqe(io_work->qedf, &io_work->cqe);
2358
2359         kfree(io_work);
2360 }
2361
2362 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf,
2363         struct qed_sb_info *sb_info, u16 sb_id)
2364 {
2365         struct status_block *sb_virt;
2366         dma_addr_t sb_phys;
2367         int ret;
2368
2369         sb_virt = dma_alloc_coherent(&qedf->pdev->dev,
2370             sizeof(struct status_block), &sb_phys, GFP_KERNEL);
2371
2372         if (!sb_virt) {
2373                 QEDF_ERR(&(qedf->dbg_ctx), "Status block allocation failed "
2374                           "for id = %d.\n", sb_id);
2375                 return -ENOMEM;
2376         }
2377
2378         ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys,
2379             sb_id, QED_SB_TYPE_STORAGE);
2380
2381         if (ret) {
2382                 QEDF_ERR(&(qedf->dbg_ctx), "Status block initialization "
2383                           "failed for id = %d.\n", sb_id);
2384                 return ret;
2385         }
2386
2387         return 0;
2388 }
2389
2390 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info)
2391 {
2392         if (sb_info->sb_virt)
2393                 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt),
2394                     (void *)sb_info->sb_virt, sb_info->sb_phys);
2395 }
2396
2397 static void qedf_destroy_sb(struct qedf_ctx *qedf)
2398 {
2399         int id;
2400         struct qedf_fastpath *fp = NULL;
2401
2402         for (id = 0; id < qedf->num_queues; id++) {
2403                 fp = &(qedf->fp_array[id]);
2404                 if (fp->sb_id == QEDF_SB_ID_NULL)
2405                         break;
2406                 qedf_free_sb(qedf, fp->sb_info);
2407                 kfree(fp->sb_info);
2408         }
2409         kfree(qedf->fp_array);
2410 }
2411
2412 static int qedf_prepare_sb(struct qedf_ctx *qedf)
2413 {
2414         int id;
2415         struct qedf_fastpath *fp;
2416         int ret;
2417
2418         qedf->fp_array =
2419             kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath),
2420                 GFP_KERNEL);
2421
2422         if (!qedf->fp_array) {
2423                 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation "
2424                           "failed.\n");
2425                 return -ENOMEM;
2426         }
2427
2428         for (id = 0; id < qedf->num_queues; id++) {
2429                 fp = &(qedf->fp_array[id]);
2430                 fp->sb_id = QEDF_SB_ID_NULL;
2431                 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL);
2432                 if (!fp->sb_info) {
2433                         QEDF_ERR(&(qedf->dbg_ctx), "SB info struct "
2434                                   "allocation failed.\n");
2435                         goto err;
2436                 }
2437                 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id);
2438                 if (ret) {
2439                         QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and "
2440                                   "initialization failed.\n");
2441                         goto err;
2442                 }
2443                 fp->sb_id = id;
2444                 fp->qedf = qedf;
2445                 fp->cq_num_entries =
2446                     qedf->global_queues[id]->cq_mem_size /
2447                     sizeof(struct fcoe_cqe);
2448         }
2449 err:
2450         return 0;
2451 }
2452
2453 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe)
2454 {
2455         u16 xid;
2456         struct qedf_ioreq *io_req;
2457         struct qedf_rport *fcport;
2458         u32 comp_type;
2459
2460         comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2461             FCOE_CQE_CQE_TYPE_MASK;
2462
2463         xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2464         io_req = &qedf->cmd_mgr->cmds[xid];
2465
2466         /* Completion not for a valid I/O anymore so just return */
2467         if (!io_req)
2468                 return;
2469
2470         fcport = io_req->fcport;
2471
2472         if (fcport == NULL) {
2473                 QEDF_ERR(&(qedf->dbg_ctx), "fcport is NULL.\n");
2474                 return;
2475         }
2476
2477         /*
2478          * Check that fcport is offloaded.  If it isn't then the spinlock
2479          * isn't valid and shouldn't be taken. We should just return.
2480          */
2481         if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
2482                 QEDF_ERR(&(qedf->dbg_ctx), "Session not offloaded yet.\n");
2483                 return;
2484         }
2485
2486
2487         switch (comp_type) {
2488         case FCOE_GOOD_COMPLETION_CQE_TYPE:
2489                 atomic_inc(&fcport->free_sqes);
2490                 switch (io_req->cmd_type) {
2491                 case QEDF_SCSI_CMD:
2492                         qedf_scsi_completion(qedf, cqe, io_req);
2493                         break;
2494                 case QEDF_ELS:
2495                         qedf_process_els_compl(qedf, cqe, io_req);
2496                         break;
2497                 case QEDF_TASK_MGMT_CMD:
2498                         qedf_process_tmf_compl(qedf, cqe, io_req);
2499                         break;
2500                 case QEDF_SEQ_CLEANUP:
2501                         qedf_process_seq_cleanup_compl(qedf, cqe, io_req);
2502                         break;
2503                 }
2504                 break;
2505         case FCOE_ERROR_DETECTION_CQE_TYPE:
2506                 atomic_inc(&fcport->free_sqes);
2507                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2508                     "Error detect CQE.\n");
2509                 qedf_process_error_detect(qedf, cqe, io_req);
2510                 break;
2511         case FCOE_EXCH_CLEANUP_CQE_TYPE:
2512                 atomic_inc(&fcport->free_sqes);
2513                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2514                     "Cleanup CQE.\n");
2515                 qedf_process_cleanup_compl(qedf, cqe, io_req);
2516                 break;
2517         case FCOE_ABTS_CQE_TYPE:
2518                 atomic_inc(&fcport->free_sqes);
2519                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2520                     "Abort CQE.\n");
2521                 qedf_process_abts_compl(qedf, cqe, io_req);
2522                 break;
2523         case FCOE_DUMMY_CQE_TYPE:
2524                 atomic_inc(&fcport->free_sqes);
2525                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2526                     "Dummy CQE.\n");
2527                 break;
2528         case FCOE_LOCAL_COMP_CQE_TYPE:
2529                 atomic_inc(&fcport->free_sqes);
2530                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2531                     "Local completion CQE.\n");
2532                 break;
2533         case FCOE_WARNING_CQE_TYPE:
2534                 atomic_inc(&fcport->free_sqes);
2535                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2536                     "Warning CQE.\n");
2537                 qedf_process_warning_compl(qedf, cqe, io_req);
2538                 break;
2539         case MAX_FCOE_CQE_TYPE:
2540                 atomic_inc(&fcport->free_sqes);
2541                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2542                     "Max FCoE CQE.\n");
2543                 break;
2544         default:
2545                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2546                     "Default CQE.\n");
2547                 break;
2548         }
2549 }
2550
2551 static void qedf_free_bdq(struct qedf_ctx *qedf)
2552 {
2553         int i;
2554
2555         if (qedf->bdq_pbl_list)
2556                 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE,
2557                     qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma);
2558
2559         if (qedf->bdq_pbl)
2560                 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size,
2561                     qedf->bdq_pbl, qedf->bdq_pbl_dma);
2562
2563         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2564                 if (qedf->bdq[i].buf_addr) {
2565                         dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE,
2566                             qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma);
2567                 }
2568         }
2569 }
2570
2571 static void qedf_free_global_queues(struct qedf_ctx *qedf)
2572 {
2573         int i;
2574         struct global_queue **gl = qedf->global_queues;
2575
2576         for (i = 0; i < qedf->num_queues; i++) {
2577                 if (!gl[i])
2578                         continue;
2579
2580                 if (gl[i]->cq)
2581                         dma_free_coherent(&qedf->pdev->dev,
2582                             gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma);
2583                 if (gl[i]->cq_pbl)
2584                         dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size,
2585                             gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
2586
2587                 kfree(gl[i]);
2588         }
2589
2590         qedf_free_bdq(qedf);
2591 }
2592
2593 static int qedf_alloc_bdq(struct qedf_ctx *qedf)
2594 {
2595         int i;
2596         struct scsi_bd *pbl;
2597         u64 *list;
2598         dma_addr_t page;
2599
2600         /* Alloc dma memory for BDQ buffers */
2601         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2602                 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev,
2603                     QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL);
2604                 if (!qedf->bdq[i].buf_addr) {
2605                         QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ "
2606                             "buffer %d.\n", i);
2607                         return -ENOMEM;
2608                 }
2609         }
2610
2611         /* Alloc dma memory for BDQ page buffer list */
2612         qedf->bdq_pbl_mem_size =
2613             QEDF_BDQ_SIZE * sizeof(struct scsi_bd);
2614         qedf->bdq_pbl_mem_size =
2615             ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE);
2616
2617         qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
2618             qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL);
2619         if (!qedf->bdq_pbl) {
2620                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n");
2621                 return -ENOMEM;
2622         }
2623
2624         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2625                   "BDQ PBL addr=0x%p dma=%pad\n",
2626                   qedf->bdq_pbl, &qedf->bdq_pbl_dma);
2627
2628         /*
2629          * Populate BDQ PBL with physical and virtual address of individual
2630          * BDQ buffers
2631          */
2632         pbl = (struct scsi_bd *)qedf->bdq_pbl;
2633         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2634                 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma));
2635                 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma));
2636                 pbl->opaque.hi = 0;
2637                 /* Opaque lo data is an index into the BDQ array */
2638                 pbl->opaque.lo = cpu_to_le32(i);
2639                 pbl++;
2640         }
2641
2642         /* Allocate list of PBL pages */
2643         qedf->bdq_pbl_list = dma_zalloc_coherent(&qedf->pdev->dev,
2644             QEDF_PAGE_SIZE, &qedf->bdq_pbl_list_dma, GFP_KERNEL);
2645         if (!qedf->bdq_pbl_list) {
2646                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n");
2647                 return -ENOMEM;
2648         }
2649
2650         /*
2651          * Now populate PBL list with pages that contain pointers to the
2652          * individual buffers.
2653          */
2654         qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size /
2655             QEDF_PAGE_SIZE;
2656         list = (u64 *)qedf->bdq_pbl_list;
2657         page = qedf->bdq_pbl_list_dma;
2658         for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) {
2659                 *list = qedf->bdq_pbl_dma;
2660                 list++;
2661                 page += QEDF_PAGE_SIZE;
2662         }
2663
2664         return 0;
2665 }
2666
2667 static int qedf_alloc_global_queues(struct qedf_ctx *qedf)
2668 {
2669         u32 *list;
2670         int i;
2671         int status = 0, rc;
2672         u32 *pbl;
2673         dma_addr_t page;
2674         int num_pages;
2675
2676         /* Allocate and map CQs, RQs */
2677         /*
2678          * Number of global queues (CQ / RQ). This should
2679          * be <= number of available MSIX vectors for the PF
2680          */
2681         if (!qedf->num_queues) {
2682                 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n");
2683                 return 1;
2684         }
2685
2686         /*
2687          * Make sure we allocated the PBL that will contain the physical
2688          * addresses of our queues
2689          */
2690         if (!qedf->p_cpuq) {
2691                 status = 1;
2692                 goto mem_alloc_failure;
2693         }
2694
2695         qedf->global_queues = kzalloc((sizeof(struct global_queue *)
2696             * qedf->num_queues), GFP_KERNEL);
2697         if (!qedf->global_queues) {
2698                 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global "
2699                           "queues array ptr memory\n");
2700                 return -ENOMEM;
2701         }
2702         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2703                    "qedf->global_queues=%p.\n", qedf->global_queues);
2704
2705         /* Allocate DMA coherent buffers for BDQ */
2706         rc = qedf_alloc_bdq(qedf);
2707         if (rc)
2708                 goto mem_alloc_failure;
2709
2710         /* Allocate a CQ and an associated PBL for each MSI-X vector */
2711         for (i = 0; i < qedf->num_queues; i++) {
2712                 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue),
2713                     GFP_KERNEL);
2714                 if (!qedf->global_queues[i]) {
2715                         QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate "
2716                                    "global queue %d.\n", i);
2717                         status = -ENOMEM;
2718                         goto mem_alloc_failure;
2719                 }
2720
2721                 qedf->global_queues[i]->cq_mem_size =
2722                     FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
2723                 qedf->global_queues[i]->cq_mem_size =
2724                     ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE);
2725
2726                 qedf->global_queues[i]->cq_pbl_size =
2727                     (qedf->global_queues[i]->cq_mem_size /
2728                     PAGE_SIZE) * sizeof(void *);
2729                 qedf->global_queues[i]->cq_pbl_size =
2730                     ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE);
2731
2732                 qedf->global_queues[i]->cq =
2733                     dma_zalloc_coherent(&qedf->pdev->dev,
2734                         qedf->global_queues[i]->cq_mem_size,
2735                         &qedf->global_queues[i]->cq_dma, GFP_KERNEL);
2736
2737                 if (!qedf->global_queues[i]->cq) {
2738                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n");
2739                         status = -ENOMEM;
2740                         goto mem_alloc_failure;
2741                 }
2742
2743                 qedf->global_queues[i]->cq_pbl =
2744                     dma_zalloc_coherent(&qedf->pdev->dev,
2745                         qedf->global_queues[i]->cq_pbl_size,
2746                         &qedf->global_queues[i]->cq_pbl_dma, GFP_KERNEL);
2747
2748                 if (!qedf->global_queues[i]->cq_pbl) {
2749                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n");
2750                         status = -ENOMEM;
2751                         goto mem_alloc_failure;
2752                 }
2753
2754                 /* Create PBL */
2755                 num_pages = qedf->global_queues[i]->cq_mem_size /
2756                     QEDF_PAGE_SIZE;
2757                 page = qedf->global_queues[i]->cq_dma;
2758                 pbl = (u32 *)qedf->global_queues[i]->cq_pbl;
2759
2760                 while (num_pages--) {
2761                         *pbl = U64_LO(page);
2762                         pbl++;
2763                         *pbl = U64_HI(page);
2764                         pbl++;
2765                         page += QEDF_PAGE_SIZE;
2766                 }
2767                 /* Set the initial consumer index for cq */
2768                 qedf->global_queues[i]->cq_cons_idx = 0;
2769         }
2770
2771         list = (u32 *)qedf->p_cpuq;
2772
2773         /*
2774          * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
2775          * CQ#1 PBL pointer, RQ#1 PBL pointer, etc.  Each PBL pointer points
2776          * to the physical address which contains an array of pointers to
2777          * the physical addresses of the specific queue pages.
2778          */
2779         for (i = 0; i < qedf->num_queues; i++) {
2780                 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma);
2781                 list++;
2782                 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma);
2783                 list++;
2784                 *list = U64_LO(0);
2785                 list++;
2786                 *list = U64_HI(0);
2787                 list++;
2788         }
2789
2790         return 0;
2791
2792 mem_alloc_failure:
2793         qedf_free_global_queues(qedf);
2794         return status;
2795 }
2796
2797 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf)
2798 {
2799         u8 sq_num_pbl_pages;
2800         u32 sq_mem_size;
2801         u32 cq_mem_size;
2802         u32 cq_num_entries;
2803         int rval;
2804
2805         /*
2806          * The number of completion queues/fastpath interrupts/status blocks
2807          * we allocation is the minimum off:
2808          *
2809          * Number of CPUs
2810          * Number allocated by qed for our PCI function
2811          */
2812         qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf);
2813
2814         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n",
2815                    qedf->num_queues);
2816
2817         qedf->p_cpuq = pci_alloc_consistent(qedf->pdev,
2818             qedf->num_queues * sizeof(struct qedf_glbl_q_params),
2819             &qedf->hw_p_cpuq);
2820
2821         if (!qedf->p_cpuq) {
2822                 QEDF_ERR(&(qedf->dbg_ctx), "pci_alloc_consistent failed.\n");
2823                 return 1;
2824         }
2825
2826         rval = qedf_alloc_global_queues(qedf);
2827         if (rval) {
2828                 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation "
2829                           "failed.\n");
2830                 return 1;
2831         }
2832
2833         /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */
2834         sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
2835         sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE);
2836         sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE);
2837
2838         /* Calculate CQ num entries */
2839         cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
2840         cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE);
2841         cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe);
2842
2843         memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params));
2844
2845         /* Setup the value for fcoe PF */
2846         qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS;
2847         qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS;
2848         qedf->pf_params.fcoe_pf_params.glbl_q_params_addr =
2849             (u64)qedf->hw_p_cpuq;
2850         qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages;
2851
2852         qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0;
2853
2854         qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries;
2855         qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues;
2856
2857         /* log_page_size: 12 for 4KB pages */
2858         qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE);
2859
2860         qedf->pf_params.fcoe_pf_params.mtu = 9000;
2861         qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI;
2862         qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI;
2863
2864         /* BDQ address and size */
2865         qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] =
2866             qedf->bdq_pbl_list_dma;
2867         qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] =
2868             qedf->bdq_pbl_list_num_entries;
2869         qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE;
2870
2871         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2872             "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n",
2873             qedf->bdq_pbl_list,
2874             qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0],
2875             qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]);
2876
2877         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2878             "cq_num_entries=%d.\n",
2879             qedf->pf_params.fcoe_pf_params.cq_num_entries);
2880
2881         return 0;
2882 }
2883
2884 /* Free DMA coherent memory for array of queue pointers we pass to qed */
2885 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf)
2886 {
2887         size_t size = 0;
2888
2889         if (qedf->p_cpuq) {
2890                 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params);
2891                 pci_free_consistent(qedf->pdev, size, qedf->p_cpuq,
2892                     qedf->hw_p_cpuq);
2893         }
2894
2895         qedf_free_global_queues(qedf);
2896
2897         if (qedf->global_queues)
2898                 kfree(qedf->global_queues);
2899 }
2900
2901 /*
2902  * PCI driver functions
2903  */
2904
2905 static const struct pci_device_id qedf_pci_tbl[] = {
2906         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) },
2907         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) },
2908         {0}
2909 };
2910 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl);
2911
2912 static struct pci_driver qedf_pci_driver = {
2913         .name = QEDF_MODULE_NAME,
2914         .id_table = qedf_pci_tbl,
2915         .probe = qedf_probe,
2916         .remove = qedf_remove,
2917 };
2918
2919 static int __qedf_probe(struct pci_dev *pdev, int mode)
2920 {
2921         int rc = -EINVAL;
2922         struct fc_lport *lport;
2923         struct qedf_ctx *qedf;
2924         struct Scsi_Host *host;
2925         bool is_vf = false;
2926         struct qed_ll2_params params;
2927         char host_buf[20];
2928         struct qed_link_params link_params;
2929         int status;
2930         void *task_start, *task_end;
2931         struct qed_slowpath_params slowpath_params;
2932         struct qed_probe_params qed_params;
2933         u16 tmp;
2934
2935         /*
2936          * When doing error recovery we didn't reap the lport so don't try
2937          * to reallocate it.
2938          */
2939         if (mode != QEDF_MODE_RECOVERY) {
2940                 lport = libfc_host_alloc(&qedf_host_template,
2941                     sizeof(struct qedf_ctx));
2942
2943                 if (!lport) {
2944                         QEDF_ERR(NULL, "Could not allocate lport.\n");
2945                         rc = -ENOMEM;
2946                         goto err0;
2947                 }
2948
2949                 /* Initialize qedf_ctx */
2950                 qedf = lport_priv(lport);
2951                 qedf->lport = lport;
2952                 qedf->ctlr.lp = lport;
2953                 qedf->pdev = pdev;
2954                 qedf->dbg_ctx.pdev = pdev;
2955                 qedf->dbg_ctx.host_no = lport->host->host_no;
2956                 spin_lock_init(&qedf->hba_lock);
2957                 INIT_LIST_HEAD(&qedf->fcports);
2958                 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1;
2959                 atomic_set(&qedf->num_offloads, 0);
2960                 qedf->stop_io_on_error = false;
2961                 pci_set_drvdata(pdev, qedf);
2962                 init_completion(&qedf->fipvlan_compl);
2963
2964                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO,
2965                    "QLogic FastLinQ FCoE Module qedf %s, "
2966                    "FW %d.%d.%d.%d\n", QEDF_VERSION,
2967                    FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
2968                    FW_ENGINEERING_VERSION);
2969         } else {
2970                 /* Init pointers during recovery */
2971                 qedf = pci_get_drvdata(pdev);
2972                 lport = qedf->lport;
2973         }
2974
2975         host = lport->host;
2976
2977         /* Allocate mempool for qedf_io_work structs */
2978         qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN,
2979             qedf_io_work_cache);
2980         if (qedf->io_mempool == NULL) {
2981                 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n");
2982                 goto err1;
2983         }
2984         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n",
2985             qedf->io_mempool);
2986
2987         sprintf(host_buf, "qedf_%u_link",
2988             qedf->lport->host->host_no);
2989         qedf->link_update_wq = create_workqueue(host_buf);
2990         INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update);
2991         INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery);
2992
2993         qedf->fipvlan_retries = qedf_fipvlan_retries;
2994
2995         /*
2996          * Common probe. Takes care of basic hardware init and pci_*
2997          * functions.
2998          */
2999         memset(&qed_params, 0, sizeof(qed_params));
3000         qed_params.protocol = QED_PROTOCOL_FCOE;
3001         qed_params.dp_module = qedf_dp_module;
3002         qed_params.dp_level = qedf_dp_level;
3003         qed_params.is_vf = is_vf;
3004         qedf->cdev = qed_ops->common->probe(pdev, &qed_params);
3005         if (!qedf->cdev) {
3006                 rc = -ENODEV;
3007                 goto err1;
3008         }
3009
3010         /* Learn information crucial for qedf to progress */
3011         rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
3012         if (rc) {
3013                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n");
3014                 goto err1;
3015         }
3016
3017         /* queue allocation code should come here
3018          * order should be
3019          *      slowpath_start
3020          *      status block allocation
3021          *      interrupt registration (to get min number of queues)
3022          *      set_fcoe_pf_param
3023          *      qed_sp_fcoe_func_start
3024          */
3025         rc = qedf_set_fcoe_pf_param(qedf);
3026         if (rc) {
3027                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n");
3028                 goto err2;
3029         }
3030         qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3031
3032         /* Record BDQ producer doorbell addresses */
3033         qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr;
3034         qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr;
3035         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3036             "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod,
3037             qedf->bdq_secondary_prod);
3038
3039         qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf);
3040
3041         rc = qedf_prepare_sb(qedf);
3042         if (rc) {
3043
3044                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3045                 goto err2;
3046         }
3047
3048         /* Start the Slowpath-process */
3049         slowpath_params.int_mode = QED_INT_MODE_MSIX;
3050         slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER;
3051         slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER;
3052         slowpath_params.drv_rev = QEDF_DRIVER_REV_VER;
3053         slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER;
3054         strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE);
3055         rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params);
3056         if (rc) {
3057                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3058                 goto err2;
3059         }
3060
3061         /*
3062          * update_pf_params needs to be called before and after slowpath
3063          * start
3064          */
3065         qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3066
3067         /* Setup interrupts */
3068         rc = qedf_setup_int(qedf);
3069         if (rc)
3070                 goto err3;
3071
3072         rc = qed_ops->start(qedf->cdev, &qedf->tasks);
3073         if (rc) {
3074                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n");
3075                 goto err4;
3076         }
3077         task_start = qedf_get_task_mem(&qedf->tasks, 0);
3078         task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1);
3079         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, "
3080                    "end=%p block_size=%u.\n", task_start, task_end,
3081                    qedf->tasks.size);
3082
3083         /*
3084          * We need to write the number of BDs in the BDQ we've preallocated so
3085          * the f/w will do a prefetch and we'll get an unsolicited CQE when a
3086          * packet arrives.
3087          */
3088         qedf->bdq_prod_idx = QEDF_BDQ_SIZE;
3089         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3090             "Writing %d to primary and secondary BDQ doorbell registers.\n",
3091             qedf->bdq_prod_idx);
3092         writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod);
3093         tmp = readw(qedf->bdq_primary_prod);
3094         writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod);
3095         tmp = readw(qedf->bdq_secondary_prod);
3096
3097         qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3098
3099         /* Now that the dev_info struct has been filled in set the MAC
3100          * address
3101          */
3102         ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac);
3103         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n",
3104                    qedf->mac);
3105
3106         /*
3107          * Set the WWNN and WWPN in the following way:
3108          *
3109          * If the info we get from qed is non-zero then use that to set the
3110          * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based
3111          * on the MAC address.
3112          */
3113         if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) {
3114                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3115                     "Setting WWPN and WWNN from qed dev_info.\n");
3116                 qedf->wwnn = qedf->dev_info.wwnn;
3117                 qedf->wwpn = qedf->dev_info.wwpn;
3118         } else {
3119                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3120                     "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n");
3121                 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0);
3122                 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0);
3123         }
3124         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,  "WWNN=%016llx "
3125                    "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn);
3126
3127         sprintf(host_buf, "host_%d", host->host_no);
3128         qed_ops->common->set_name(qedf->cdev, host_buf);
3129
3130
3131         /* Set xid max values */
3132         qedf->max_scsi_xid = QEDF_MAX_SCSI_XID;
3133         qedf->max_els_xid = QEDF_MAX_ELS_XID;
3134
3135         /* Allocate cmd mgr */
3136         qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf);
3137         if (!qedf->cmd_mgr) {
3138                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n");
3139                 goto err5;
3140         }
3141
3142         if (mode != QEDF_MODE_RECOVERY) {
3143                 host->transportt = qedf_fc_transport_template;
3144                 host->can_queue = QEDF_MAX_ELS_XID;
3145                 host->max_lun = qedf_max_lun;
3146                 host->max_cmd_len = QEDF_MAX_CDB_LEN;
3147                 rc = scsi_add_host(host, &pdev->dev);
3148                 if (rc)
3149                         goto err6;
3150         }
3151
3152         memset(&params, 0, sizeof(params));
3153         params.mtu = 9000;
3154         ether_addr_copy(params.ll2_mac_address, qedf->mac);
3155
3156         /* Start LL2 processing thread */
3157         snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no);
3158         qedf->ll2_recv_wq =
3159                 create_workqueue(host_buf);
3160         if (!qedf->ll2_recv_wq) {
3161                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n");
3162                 goto err7;
3163         }
3164
3165 #ifdef CONFIG_DEBUG_FS
3166         qedf_dbg_host_init(&(qedf->dbg_ctx), &qedf_debugfs_ops,
3167                             &qedf_dbg_fops);
3168 #endif
3169
3170         /* Start LL2 */
3171         qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf);
3172         rc = qed_ops->ll2->start(qedf->cdev, &params);
3173         if (rc) {
3174                 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n");
3175                 goto err7;
3176         }
3177         set_bit(QEDF_LL2_STARTED, &qedf->flags);
3178
3179         /* Set initial FIP/FCoE VLAN to NULL */
3180         qedf->vlan_id = 0;
3181
3182         /*
3183          * No need to setup fcoe_ctlr or fc_lport objects during recovery since
3184          * they were not reaped during the unload process.
3185          */
3186         if (mode != QEDF_MODE_RECOVERY) {
3187                 /* Setup imbedded fcoe controller */
3188                 qedf_fcoe_ctlr_setup(qedf);
3189
3190                 /* Setup lport */
3191                 rc = qedf_lport_setup(qedf);
3192                 if (rc) {
3193                         QEDF_ERR(&(qedf->dbg_ctx),
3194                             "qedf_lport_setup failed.\n");
3195                         goto err7;
3196                 }
3197         }
3198
3199         sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no);
3200         qedf->timer_work_queue =
3201                 create_workqueue(host_buf);
3202         if (!qedf->timer_work_queue) {
3203                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer "
3204                           "workqueue.\n");
3205                 goto err7;
3206         }
3207
3208         /* DPC workqueue is not reaped during recovery unload */
3209         if (mode != QEDF_MODE_RECOVERY) {
3210                 sprintf(host_buf, "qedf_%u_dpc",
3211                     qedf->lport->host->host_no);
3212                 qedf->dpc_wq = create_workqueue(host_buf);
3213         }
3214
3215         /*
3216          * GRC dump and sysfs parameters are not reaped during the recovery
3217          * unload process.
3218          */
3219         if (mode != QEDF_MODE_RECOVERY) {
3220                 qedf->grcdump_size = qed_ops->common->dbg_grc_size(qedf->cdev);
3221                 if (qedf->grcdump_size) {
3222                         rc = qedf_alloc_grc_dump_buf(&qedf->grcdump,
3223                             qedf->grcdump_size);
3224                         if (rc) {
3225                                 QEDF_ERR(&(qedf->dbg_ctx),
3226                                     "GRC Dump buffer alloc failed.\n");
3227                                 qedf->grcdump = NULL;
3228                         }
3229
3230                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3231                             "grcdump: addr=%p, size=%u.\n",
3232                             qedf->grcdump, qedf->grcdump_size);
3233                 }
3234                 qedf_create_sysfs_ctx_attr(qedf);
3235
3236                 /* Initialize I/O tracing for this adapter */
3237                 spin_lock_init(&qedf->io_trace_lock);
3238                 qedf->io_trace_idx = 0;
3239         }
3240
3241         init_completion(&qedf->flogi_compl);
3242
3243         status = qed_ops->common->update_drv_state(qedf->cdev, true);
3244         if (status)
3245                 QEDF_ERR(&(qedf->dbg_ctx),
3246                         "Failed to send drv state to MFW.\n");
3247
3248         memset(&link_params, 0, sizeof(struct qed_link_params));
3249         link_params.link_up = true;
3250         status = qed_ops->common->set_link(qedf->cdev, &link_params);
3251         if (status)
3252                 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n");
3253
3254         /* Start/restart discovery */
3255         if (mode == QEDF_MODE_RECOVERY)
3256                 fcoe_ctlr_link_up(&qedf->ctlr);
3257         else
3258                 fc_fabric_login(lport);
3259
3260         /* All good */
3261         return 0;
3262
3263 err7:
3264         if (qedf->ll2_recv_wq)
3265                 destroy_workqueue(qedf->ll2_recv_wq);
3266         fc_remove_host(qedf->lport->host);
3267         scsi_remove_host(qedf->lport->host);
3268 #ifdef CONFIG_DEBUG_FS
3269         qedf_dbg_host_exit(&(qedf->dbg_ctx));
3270 #endif
3271 err6:
3272         qedf_cmd_mgr_free(qedf->cmd_mgr);
3273 err5:
3274         qed_ops->stop(qedf->cdev);
3275 err4:
3276         qedf_free_fcoe_pf_param(qedf);
3277         qedf_sync_free_irqs(qedf);
3278 err3:
3279         qed_ops->common->slowpath_stop(qedf->cdev);
3280 err2:
3281         qed_ops->common->remove(qedf->cdev);
3282 err1:
3283         scsi_host_put(lport->host);
3284 err0:
3285         return rc;
3286 }
3287
3288 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
3289 {
3290         return __qedf_probe(pdev, QEDF_MODE_NORMAL);
3291 }
3292
3293 static void __qedf_remove(struct pci_dev *pdev, int mode)
3294 {
3295         struct qedf_ctx *qedf;
3296         int rc;
3297
3298         if (!pdev) {
3299                 QEDF_ERR(NULL, "pdev is NULL.\n");
3300                 return;
3301         }
3302
3303         qedf = pci_get_drvdata(pdev);
3304
3305         /*
3306          * Prevent race where we're in board disable work and then try to
3307          * rmmod the module.
3308          */
3309         if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
3310                 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n");
3311                 return;
3312         }
3313
3314         if (mode != QEDF_MODE_RECOVERY)
3315                 set_bit(QEDF_UNLOADING, &qedf->flags);
3316
3317         /* Logoff the fabric to upload all connections */
3318         if (mode == QEDF_MODE_RECOVERY)
3319                 fcoe_ctlr_link_down(&qedf->ctlr);
3320         else
3321                 fc_fabric_logoff(qedf->lport);
3322         qedf_wait_for_upload(qedf);
3323
3324 #ifdef CONFIG_DEBUG_FS
3325         qedf_dbg_host_exit(&(qedf->dbg_ctx));
3326 #endif
3327
3328         /* Stop any link update handling */
3329         cancel_delayed_work_sync(&qedf->link_update);
3330         destroy_workqueue(qedf->link_update_wq);
3331         qedf->link_update_wq = NULL;
3332
3333         if (qedf->timer_work_queue)
3334                 destroy_workqueue(qedf->timer_work_queue);
3335
3336         /* Stop Light L2 */
3337         clear_bit(QEDF_LL2_STARTED, &qedf->flags);
3338         qed_ops->ll2->stop(qedf->cdev);
3339         if (qedf->ll2_recv_wq)
3340                 destroy_workqueue(qedf->ll2_recv_wq);
3341
3342         /* Stop fastpath */
3343         qedf_sync_free_irqs(qedf);
3344         qedf_destroy_sb(qedf);
3345
3346         /*
3347          * During recovery don't destroy OS constructs that represent the
3348          * physical port.
3349          */
3350         if (mode != QEDF_MODE_RECOVERY) {
3351                 qedf_free_grc_dump_buf(&qedf->grcdump);
3352                 qedf_remove_sysfs_ctx_attr(qedf);
3353
3354                 /* Remove all SCSI/libfc/libfcoe structures */
3355                 fcoe_ctlr_destroy(&qedf->ctlr);
3356                 fc_lport_destroy(qedf->lport);
3357                 fc_remove_host(qedf->lport->host);
3358                 scsi_remove_host(qedf->lport->host);
3359         }
3360
3361         qedf_cmd_mgr_free(qedf->cmd_mgr);
3362
3363         if (mode != QEDF_MODE_RECOVERY) {
3364                 fc_exch_mgr_free(qedf->lport);
3365                 fc_lport_free_stats(qedf->lport);
3366
3367                 /* Wait for all vports to be reaped */
3368                 qedf_wait_for_vport_destroy(qedf);
3369         }
3370
3371         /*
3372          * Now that all connections have been uploaded we can stop the
3373          * rest of the qed operations
3374          */
3375         qed_ops->stop(qedf->cdev);
3376
3377         if (mode != QEDF_MODE_RECOVERY) {
3378                 if (qedf->dpc_wq) {
3379                         /* Stop general DPC handling */
3380                         destroy_workqueue(qedf->dpc_wq);
3381                         qedf->dpc_wq = NULL;
3382                 }
3383         }
3384
3385         /* Final shutdown for the board */
3386         qedf_free_fcoe_pf_param(qedf);
3387         if (mode != QEDF_MODE_RECOVERY) {
3388                 qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3389                 pci_set_drvdata(pdev, NULL);
3390         }
3391
3392         rc = qed_ops->common->update_drv_state(qedf->cdev, false);
3393         if (rc)
3394                 QEDF_ERR(&(qedf->dbg_ctx),
3395                         "Failed to send drv state to MFW.\n");
3396
3397         qed_ops->common->slowpath_stop(qedf->cdev);
3398         qed_ops->common->remove(qedf->cdev);
3399
3400         mempool_destroy(qedf->io_mempool);
3401
3402         /* Only reap the Scsi_host on a real removal */
3403         if (mode != QEDF_MODE_RECOVERY)
3404                 scsi_host_put(qedf->lport->host);
3405 }
3406
3407 static void qedf_remove(struct pci_dev *pdev)
3408 {
3409         /* Check to make sure this function wasn't already disabled */
3410         if (!atomic_read(&pdev->enable_cnt))
3411                 return;
3412
3413         __qedf_remove(pdev, QEDF_MODE_NORMAL);
3414 }
3415
3416 /*
3417  * Module Init/Remove
3418  */
3419
3420 static int __init qedf_init(void)
3421 {
3422         int ret;
3423
3424         /* If debug=1 passed, set the default log mask */
3425         if (qedf_debug == QEDF_LOG_DEFAULT)
3426                 qedf_debug = QEDF_DEFAULT_LOG_MASK;
3427
3428         /* Print driver banner */
3429         QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR,
3430                    QEDF_VERSION);
3431
3432         /* Create kmem_cache for qedf_io_work structs */
3433         qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache",
3434             sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL);
3435         if (qedf_io_work_cache == NULL) {
3436                 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n");
3437                 goto err1;
3438         }
3439         QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n",
3440             qedf_io_work_cache);
3441
3442         qed_ops = qed_get_fcoe_ops();
3443         if (!qed_ops) {
3444                 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n");
3445                 goto err1;
3446         }
3447
3448 #ifdef CONFIG_DEBUG_FS
3449         qedf_dbg_init("qedf");
3450 #endif
3451
3452         qedf_fc_transport_template =
3453             fc_attach_transport(&qedf_fc_transport_fn);
3454         if (!qedf_fc_transport_template) {
3455                 QEDF_ERR(NULL, "Could not register with FC transport\n");
3456                 goto err2;
3457         }
3458
3459         qedf_fc_vport_transport_template =
3460                 fc_attach_transport(&qedf_fc_vport_transport_fn);
3461         if (!qedf_fc_vport_transport_template) {
3462                 QEDF_ERR(NULL, "Could not register vport template with FC "
3463                           "transport\n");
3464                 goto err3;
3465         }
3466
3467         qedf_io_wq = create_workqueue("qedf_io_wq");
3468         if (!qedf_io_wq) {
3469                 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n");
3470                 goto err4;
3471         }
3472
3473         qedf_cb_ops.get_login_failures = qedf_get_login_failures;
3474
3475         ret = pci_register_driver(&qedf_pci_driver);
3476         if (ret) {
3477                 QEDF_ERR(NULL, "Failed to register driver\n");
3478                 goto err5;
3479         }
3480
3481         return 0;
3482
3483 err5:
3484         destroy_workqueue(qedf_io_wq);
3485 err4:
3486         fc_release_transport(qedf_fc_vport_transport_template);
3487 err3:
3488         fc_release_transport(qedf_fc_transport_template);
3489 err2:
3490 #ifdef CONFIG_DEBUG_FS
3491         qedf_dbg_exit();
3492 #endif
3493         qed_put_fcoe_ops();
3494 err1:
3495         return -EINVAL;
3496 }
3497
3498 static void __exit qedf_cleanup(void)
3499 {
3500         pci_unregister_driver(&qedf_pci_driver);
3501
3502         destroy_workqueue(qedf_io_wq);
3503
3504         fc_release_transport(qedf_fc_vport_transport_template);
3505         fc_release_transport(qedf_fc_transport_template);
3506 #ifdef CONFIG_DEBUG_FS
3507         qedf_dbg_exit();
3508 #endif
3509         qed_put_fcoe_ops();
3510
3511         kmem_cache_destroy(qedf_io_work_cache);
3512 }
3513
3514 MODULE_LICENSE("GPL");
3515 MODULE_DESCRIPTION("QLogic QEDF 25/40/50/100Gb FCoE Driver");
3516 MODULE_AUTHOR("QLogic Corporation");
3517 MODULE_VERSION(QEDF_VERSION);
3518 module_init(qedf_init);
3519 module_exit(qedf_cleanup);