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