drivers/scsi/qedf/qedf_main.c

   1 /*
   2  *  QLogic FCoE Offload Driver
   3  *  Copyright (c) 2016-2018 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 "qedf_dbg.h"
  27 #include <uapi/linux/pci_regs.h>
  28
  29 const struct qed_fcoe_ops *qed_ops;
  30
  31 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id);
  32 static void qedf_remove(struct pci_dev *pdev);
  33
  34 /*
  35  * Driver module parameters.
  36  */
  37 static unsigned int qedf_dev_loss_tmo = 60;
  38 module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO);
  39 MODULE_PARM_DESC(dev_loss_tmo,  " dev_loss_tmo setting for attached "
  40         "remote ports (default 60)");
  41
  42 uint qedf_debug = QEDF_LOG_INFO;
  43 module_param_named(debug, qedf_debug, uint, S_IRUGO);
  44 MODULE_PARM_DESC(debug, " Debug mask. Pass '1' to enable default debugging"
  45         " mask");
  46
  47 static uint qedf_fipvlan_retries = 60;
  48 module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO);
  49 MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt "
  50         "before giving up (default 60)");
  51
  52 static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN;
  53 module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO);
  54 MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails "
  55         "(default 1002).");
  56
  57 static int qedf_default_prio = -1;
  58 module_param_named(default_prio, qedf_default_prio, int, S_IRUGO);
  59 MODULE_PARM_DESC(default_prio, " Override 802.1q priority for FIP and FCoE"
  60         " traffic (value between 0 and 7, default 3).");
  61
  62 uint qedf_dump_frames;
  63 module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR);
  64 MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames "
  65         "(default off)");
  66
  67 static uint qedf_queue_depth;
  68 module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO);
  69 MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered "
  70         "by the qedf driver. Default is 0 (use OS default).");
  71
  72 uint qedf_io_tracing;
  73 module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR);
  74 MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions "
  75         "into trace buffer. (default off).");
  76
  77 static uint qedf_max_lun = MAX_FIBRE_LUNS;
  78 module_param_named(max_lun, qedf_max_lun, int, S_IRUGO);
  79 MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver "
  80         "supports. (default 0xffffffff)");
  81
  82 uint qedf_link_down_tmo;
  83 module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO);
  84 MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the "
  85         "link is down by N seconds.");
  86
  87 bool qedf_retry_delay;
  88 module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR);
  89 MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry "
  90         "delay handling (default off).");
  91
  92 static bool qedf_dcbx_no_wait;
  93 module_param_named(dcbx_no_wait, qedf_dcbx_no_wait, bool, S_IRUGO | S_IWUSR);
  94 MODULE_PARM_DESC(dcbx_no_wait, " Do not wait for DCBX convergence to start "
  95         "sending FIP VLAN requests on link up (Default: off).");
  96
  97 static uint qedf_dp_module;
  98 module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO);
  99 MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed "
 100         "qed module during probe.");
 101
 102 static uint qedf_dp_level = QED_LEVEL_NOTICE;
 103 module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO);
 104 MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module  "
 105         "during probe (0-3: 0 more verbose).");
 106
 107 struct workqueue_struct *qedf_io_wq;
 108
 109 static struct fcoe_percpu_s qedf_global;
 110 static DEFINE_SPINLOCK(qedf_global_lock);
 111
 112 static struct kmem_cache *qedf_io_work_cache;
 113
 114 void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id)
 115 {
 116         qedf->vlan_id = vlan_id;
 117         qedf->vlan_id |= qedf->prio << VLAN_PRIO_SHIFT;
 118         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Setting vlan_id=%04x "
 119                    "prio=%d.\n", vlan_id, qedf->prio);
 120 }
 121
 122 /* Returns true if we have a valid vlan, false otherwise */
 123 static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf)
 124 {
 125         int rc;
 126
 127         if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
 128                 QEDF_ERR(&(qedf->dbg_ctx), "Link not up.\n");
 129                 return  false;
 130         }
 131
 132         while (qedf->fipvlan_retries--) {
 133                 if (qedf->vlan_id > 0)
 134                         return true;
 135                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 136                            "Retry %d.\n", qedf->fipvlan_retries);
 137                 init_completion(&qedf->fipvlan_compl);
 138                 qedf_fcoe_send_vlan_req(qedf);
 139                 rc = wait_for_completion_timeout(&qedf->fipvlan_compl,
 140                     1 * HZ);
 141                 if (rc > 0) {
 142                         fcoe_ctlr_link_up(&qedf->ctlr);
 143                         return true;
 144                 }
 145         }
 146
 147         return false;
 148 }
 149
 150 static void qedf_handle_link_update(struct work_struct *work)
 151 {
 152         struct qedf_ctx *qedf =
 153             container_of(work, struct qedf_ctx, link_update.work);
 154         int rc;
 155
 156         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Entered.\n");
 157
 158         if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
 159                 rc = qedf_initiate_fipvlan_req(qedf);
 160                 if (rc)
 161                         return;
 162                 /*
 163                  * If we get here then we never received a repsonse to our
 164                  * fip vlan request so set the vlan_id to the default and
 165                  * tell FCoE that the link is up
 166                  */
 167                 QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN "
 168                            "response, falling back to default VLAN %d.\n",
 169                            qedf_fallback_vlan);
 170                 qedf_set_vlan_id(qedf, qedf_fallback_vlan);
 171
 172                 /*
 173                  * Zero out data_src_addr so we'll update it with the new
 174                  * lport port_id
 175                  */
 176                 eth_zero_addr(qedf->data_src_addr);
 177                 fcoe_ctlr_link_up(&qedf->ctlr);
 178         } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
 179                 /*
 180                  * If we hit here and link_down_tmo_valid is still 1 it means
 181                  * that link_down_tmo timed out so set it to 0 to make sure any
 182                  * other readers have accurate state.
 183                  */
 184                 atomic_set(&qedf->link_down_tmo_valid, 0);
 185                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 186                     "Calling fcoe_ctlr_link_down().\n");
 187                 fcoe_ctlr_link_down(&qedf->ctlr);
 188                 qedf_wait_for_upload(qedf);
 189                 /* Reset the number of FIP VLAN retries */
 190                 qedf->fipvlan_retries = qedf_fipvlan_retries;
 191         }
 192 }
 193
 194 #define QEDF_FCOE_MAC_METHOD_GRANGED_MAC                1
 195 #define QEDF_FCOE_MAC_METHOD_FCF_MAP                    2
 196 #define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC               3
 197 static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp)
 198 {
 199         u8 *granted_mac;
 200         struct fc_frame_header *fh = fc_frame_header_get(fp);
 201         u8 fc_map[3];
 202         int method = 0;
 203
 204         /* Get granted MAC address from FIP FLOGI payload */
 205         granted_mac = fr_cb(fp)->granted_mac;
 206
 207         /*
 208          * We set the source MAC for FCoE traffic based on the Granted MAC
 209          * address from the switch.
 210          *
 211          * If granted_mac is non-zero, we used that.
 212          * If the granted_mac is zeroed out, created the FCoE MAC based on
 213          * the sel_fcf->fc_map and the d_id fo the FLOGI frame.
 214          * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the
 215          * d_id of the FLOGI frame.
 216          */
 217         if (!is_zero_ether_addr(granted_mac)) {
 218                 ether_addr_copy(qedf->data_src_addr, granted_mac);
 219                 method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC;
 220         } else if (qedf->ctlr.sel_fcf->fc_map != 0) {
 221                 hton24(fc_map, qedf->ctlr.sel_fcf->fc_map);
 222                 qedf->data_src_addr[0] = fc_map[0];
 223                 qedf->data_src_addr[1] = fc_map[1];
 224                 qedf->data_src_addr[2] = fc_map[2];
 225                 qedf->data_src_addr[3] = fh->fh_d_id[0];
 226                 qedf->data_src_addr[4] = fh->fh_d_id[1];
 227                 qedf->data_src_addr[5] = fh->fh_d_id[2];
 228                 method = QEDF_FCOE_MAC_METHOD_FCF_MAP;
 229         } else {
 230                 fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id);
 231                 method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC;
 232         }
 233
 234         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 235             "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method);
 236 }
 237
 238 static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp,
 239         void *arg)
 240 {
 241         struct fc_exch *exch = fc_seq_exch(seq);
 242         struct fc_lport *lport = exch->lp;
 243         struct qedf_ctx *qedf = lport_priv(lport);
 244
 245         if (!qedf) {
 246                 QEDF_ERR(NULL, "qedf is NULL.\n");
 247                 return;
 248         }
 249
 250         /*
 251          * If ERR_PTR is set then don't try to stat anything as it will cause
 252          * a crash when we access fp.
 253          */
 254         if (IS_ERR(fp)) {
 255                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
 256                     "fp has IS_ERR() set.\n");
 257                 goto skip_stat;
 258         }
 259
 260         /* Log stats for FLOGI reject */
 261         if (fc_frame_payload_op(fp) == ELS_LS_RJT)
 262                 qedf->flogi_failed++;
 263         else if (fc_frame_payload_op(fp) == ELS_LS_ACC) {
 264                 /* Set the source MAC we will use for FCoE traffic */
 265                 qedf_set_data_src_addr(qedf, fp);
 266         }
 267
 268         /* Complete flogi_compl so we can proceed to sending ADISCs */
 269         complete(&qedf->flogi_compl);
 270
 271 skip_stat:
 272         /* Report response to libfc */
 273         fc_lport_flogi_resp(seq, fp, lport);
 274 }
 275
 276 static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did,
 277         struct fc_frame *fp, unsigned int op,
 278         void (*resp)(struct fc_seq *,
 279         struct fc_frame *,
 280         void *),
 281         void *arg, u32 timeout)
 282 {
 283         struct qedf_ctx *qedf = lport_priv(lport);
 284
 285         /*
 286          * Intercept FLOGI for statistic purposes. Note we use the resp
 287          * callback to tell if this is really a flogi.
 288          */
 289         if (resp == fc_lport_flogi_resp) {
 290                 qedf->flogi_cnt++;
 291                 return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp,
 292                     arg, timeout);
 293         }
 294
 295         return fc_elsct_send(lport, did, fp, op, resp, arg, timeout);
 296 }
 297
 298 int qedf_send_flogi(struct qedf_ctx *qedf)
 299 {
 300         struct fc_lport *lport;
 301         struct fc_frame *fp;
 302
 303         lport = qedf->lport;
 304
 305         if (!lport->tt.elsct_send)
 306                 return -EINVAL;
 307
 308         fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi));
 309         if (!fp) {
 310                 QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n");
 311                 return -ENOMEM;
 312         }
 313
 314         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
 315             "Sending FLOGI to reestablish session with switch.\n");
 316         lport->tt.elsct_send(lport, FC_FID_FLOGI, fp,
 317             ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov);
 318
 319         init_completion(&qedf->flogi_compl);
 320
 321         return 0;
 322 }
 323
 324 struct qedf_tmp_rdata_item {
 325         struct fc_rport_priv *rdata;
 326         struct list_head list;
 327 };
 328
 329 /*
 330  * This function is called if link_down_tmo is in use.  If we get a link up and
 331  * link_down_tmo has not expired then use just FLOGI/ADISC to recover our
 332  * sessions with targets.  Otherwise, just call fcoe_ctlr_link_up().
 333  */
 334 static void qedf_link_recovery(struct work_struct *work)
 335 {
 336         struct qedf_ctx *qedf =
 337             container_of(work, struct qedf_ctx, link_recovery.work);
 338         struct qedf_rport *fcport;
 339         struct fc_rport_priv *rdata;
 340         struct qedf_tmp_rdata_item *rdata_item, *tmp_rdata_item;
 341         bool rc;
 342         int retries = 30;
 343         int rval, i;
 344         struct list_head rdata_login_list;
 345
 346         INIT_LIST_HEAD(&rdata_login_list);
 347
 348         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 349             "Link down tmo did not expire.\n");
 350
 351         /*
 352          * Essentially reset the fcoe_ctlr here without affecting the state
 353          * of the libfc structs.
 354          */
 355         qedf->ctlr.state = FIP_ST_LINK_WAIT;
 356         fcoe_ctlr_link_down(&qedf->ctlr);
 357
 358         /*
 359          * Bring the link up before we send the fipvlan request so libfcoe
 360          * can select a new fcf in parallel
 361          */
 362         fcoe_ctlr_link_up(&qedf->ctlr);
 363
 364         /* Since the link when down and up to verify which vlan we're on */
 365         qedf->fipvlan_retries = qedf_fipvlan_retries;
 366         rc = qedf_initiate_fipvlan_req(qedf);
 367         /* If getting the VLAN fails, set the VLAN to the fallback one */
 368         if (!rc)
 369                 qedf_set_vlan_id(qedf, qedf_fallback_vlan);
 370
 371         /*
 372          * We need to wait for an FCF to be selected due to the
 373          * fcoe_ctlr_link_up other the FLOGI will be rejected.
 374          */
 375         while (retries > 0) {
 376                 if (qedf->ctlr.sel_fcf) {
 377                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 378                             "FCF reselected, proceeding with FLOGI.\n");
 379                         break;
 380                 }
 381                 msleep(500);
 382                 retries--;
 383         }
 384
 385         if (retries < 1) {
 386                 QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for "
 387                     "FCF selection.\n");
 388                 return;
 389         }
 390
 391         rval = qedf_send_flogi(qedf);
 392         if (rval)
 393                 return;
 394
 395         /* Wait for FLOGI completion before proceeding with sending ADISCs */
 396         i = wait_for_completion_timeout(&qedf->flogi_compl,
 397             qedf->lport->r_a_tov);
 398         if (i == 0) {
 399                 QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n");
 400                 return;
 401         }
 402
 403         /*
 404          * Call lport->tt.rport_login which will cause libfc to send an
 405          * ADISC since the rport is in state ready.
 406          */
 407         rcu_read_lock();
 408         list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
 409                 rdata = fcport->rdata;
 410                 if (rdata == NULL)
 411                         continue;
 412                 rdata_item = kzalloc(sizeof(struct qedf_tmp_rdata_item),
 413                     GFP_ATOMIC);
 414                 if (!rdata_item)
 415                         continue;
 416                 if (kref_get_unless_zero(&rdata->kref)) {
 417                         rdata_item->rdata = rdata;
 418                         list_add(&rdata_item->list, &rdata_login_list);
 419                 } else
 420                         kfree(rdata_item);
 421         }
 422         rcu_read_unlock();
 423         /*
 424          * Do the fc_rport_login outside of the rcu lock so we don't take a
 425          * mutex in an atomic context.
 426          */
 427         list_for_each_entry_safe(rdata_item, tmp_rdata_item, &rdata_login_list,
 428             list) {
 429                 list_del(&rdata_item->list);
 430                 fc_rport_login(rdata_item->rdata);
 431                 kref_put(&rdata_item->rdata->kref, fc_rport_destroy);
 432                 kfree(rdata_item);
 433         }
 434 }
 435
 436 static void qedf_update_link_speed(struct qedf_ctx *qedf,
 437         struct qed_link_output *link)
 438 {
 439         struct fc_lport *lport = qedf->lport;
 440
 441         lport->link_speed = FC_PORTSPEED_UNKNOWN;
 442         lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN;
 443
 444         /* Set fc_host link speed */
 445         switch (link->speed) {
 446         case 10000:
 447                 lport->link_speed = FC_PORTSPEED_10GBIT;
 448                 break;
 449         case 25000:
 450                 lport->link_speed = FC_PORTSPEED_25GBIT;
 451                 break;
 452         case 40000:
 453                 lport->link_speed = FC_PORTSPEED_40GBIT;
 454                 break;
 455         case 50000:
 456                 lport->link_speed = FC_PORTSPEED_50GBIT;
 457                 break;
 458         case 100000:
 459                 lport->link_speed = FC_PORTSPEED_100GBIT;
 460                 break;
 461         default:
 462                 lport->link_speed = FC_PORTSPEED_UNKNOWN;
 463                 break;
 464         }
 465
 466         /*
 467          * Set supported link speed by querying the supported
 468          * capabilities of the link.
 469          */
 470         if (link->supported_caps & SUPPORTED_10000baseKR_Full)
 471                 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT;
 472         if (link->supported_caps & SUPPORTED_25000baseKR_Full)
 473                 lport->link_supported_speeds |= FC_PORTSPEED_25GBIT;
 474         if (link->supported_caps & SUPPORTED_40000baseLR4_Full)
 475                 lport->link_supported_speeds |= FC_PORTSPEED_40GBIT;
 476         if (link->supported_caps & SUPPORTED_50000baseKR2_Full)
 477                 lport->link_supported_speeds |= FC_PORTSPEED_50GBIT;
 478         if (link->supported_caps & SUPPORTED_100000baseKR4_Full)
 479                 lport->link_supported_speeds |= FC_PORTSPEED_100GBIT;
 480         fc_host_supported_speeds(lport->host) = lport->link_supported_speeds;
 481 }
 482
 483 static void qedf_link_update(void *dev, struct qed_link_output *link)
 484 {
 485         struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
 486
 487         if (link->link_up) {
 488                 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
 489                         QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC,
 490                             "Ignoring link up event as link is already up.\n");
 491                         return;
 492                 }
 493                 QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n",
 494                     link->speed / 1000);
 495
 496                 /* Cancel any pending link down work */
 497                 cancel_delayed_work(&qedf->link_update);
 498
 499                 atomic_set(&qedf->link_state, QEDF_LINK_UP);
 500                 qedf_update_link_speed(qedf, link);
 501
 502                 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE ||
 503                     qedf_dcbx_no_wait) {
 504                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 505                              "DCBx done.\n");
 506                         if (atomic_read(&qedf->link_down_tmo_valid) > 0)
 507                                 queue_delayed_work(qedf->link_update_wq,
 508                                     &qedf->link_recovery, 0);
 509                         else
 510                                 queue_delayed_work(qedf->link_update_wq,
 511                                     &qedf->link_update, 0);
 512                         atomic_set(&qedf->link_down_tmo_valid, 0);
 513                 }
 514
 515         } else {
 516                 QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n");
 517
 518                 atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
 519                 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
 520                 /*
 521                  * Flag that we're waiting for the link to come back up before
 522                  * informing the fcoe layer of the event.
 523                  */
 524                 if (qedf_link_down_tmo > 0) {
 525                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 526                             "Starting link down tmo.\n");
 527                         atomic_set(&qedf->link_down_tmo_valid, 1);
 528                 }
 529                 qedf->vlan_id = 0;
 530                 qedf_update_link_speed(qedf, link);
 531                 queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 532                     qedf_link_down_tmo * HZ);
 533         }
 534 }
 535
 536
 537 static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type)
 538 {
 539         struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
 540         u8 tmp_prio;
 541
 542         QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe "
 543             "prio=%d.\n", get->operational.valid, get->operational.enabled,
 544             get->operational.app_prio.fcoe);
 545
 546         if (get->operational.enabled && get->operational.valid) {
 547                 /* If DCBX was already negotiated on link up then just exit */
 548                 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) {
 549                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 550                             "DCBX already set on link up.\n");
 551                         return;
 552                 }
 553
 554                 atomic_set(&qedf->dcbx, QEDF_DCBX_DONE);
 555
 556                 /*
 557                  * Set the 8021q priority in the following manner:
 558                  *
 559                  * 1. If a modparam is set use that
 560                  * 2. If the value is not between 0..7 use the default
 561                  * 3. Use the priority we get from the DCBX app tag
 562                  */
 563                 tmp_prio = get->operational.app_prio.fcoe;
 564                 if (qedf_default_prio > -1)
 565                         qedf->prio = qedf_default_prio;
 566                 else if (tmp_prio < 0 || tmp_prio > 7) {
 567                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 568                             "FIP/FCoE prio %d out of range, setting to %d.\n",
 569                             tmp_prio, QEDF_DEFAULT_PRIO);
 570                         qedf->prio = QEDF_DEFAULT_PRIO;
 571                 } else
 572                         qedf->prio = tmp_prio;
 573
 574                 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP &&
 575                     !qedf_dcbx_no_wait) {
 576                         if (atomic_read(&qedf->link_down_tmo_valid) > 0)
 577                                 queue_delayed_work(qedf->link_update_wq,
 578                                     &qedf->link_recovery, 0);
 579                         else
 580                                 queue_delayed_work(qedf->link_update_wq,
 581                                     &qedf->link_update, 0);
 582                         atomic_set(&qedf->link_down_tmo_valid, 0);
 583                 }
 584         }
 585
 586 }
 587
 588 static u32 qedf_get_login_failures(void *cookie)
 589 {
 590         struct qedf_ctx *qedf;
 591
 592         qedf = (struct qedf_ctx *)cookie;
 593         return qedf->flogi_failed;
 594 }
 595
 596 static struct qed_fcoe_cb_ops qedf_cb_ops = {
 597         {
 598                 .link_update = qedf_link_update,
 599                 .dcbx_aen = qedf_dcbx_handler,
 600                 .get_generic_tlv_data = qedf_get_generic_tlv_data,
 601                 .get_protocol_tlv_data = qedf_get_protocol_tlv_data,
 602         }
 603 };
 604
 605 /*
 606  * Various transport templates.
 607  */
 608
 609 static struct scsi_transport_template *qedf_fc_transport_template;
 610 static struct scsi_transport_template *qedf_fc_vport_transport_template;
 611
 612 /*
 613  * SCSI EH handlers
 614  */
 615 static int qedf_eh_abort(struct scsi_cmnd *sc_cmd)
 616 {
 617         struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
 618         struct fc_rport_libfc_priv *rp = rport->dd_data;
 619         struct qedf_rport *fcport;
 620         struct fc_lport *lport;
 621         struct qedf_ctx *qedf;
 622         struct qedf_ioreq *io_req;
 623         int rc = FAILED;
 624         int rval;
 625
 626         if (fc_remote_port_chkready(rport)) {
 627                 QEDF_ERR(NULL, "rport not ready\n");
 628                 goto out;
 629         }
 630
 631         lport = shost_priv(sc_cmd->device->host);
 632         qedf = (struct qedf_ctx *)lport_priv(lport);
 633
 634         if ((lport->state != LPORT_ST_READY) || !(lport->link_up)) {
 635                 QEDF_ERR(&(qedf->dbg_ctx), "link not ready.\n");
 636                 goto out;
 637         }
 638
 639         fcport = (struct qedf_rport *)&rp[1];
 640
 641         io_req = (struct qedf_ioreq *)sc_cmd->SCp.ptr;
 642         if (!io_req) {
 643                 QEDF_ERR(&(qedf->dbg_ctx), "io_req is NULL.\n");
 644                 rc = SUCCESS;
 645                 goto out;
 646         }
 647
 648         QEDF_ERR(&(qedf->dbg_ctx), "Aborting io_req sc_cmd=%p xid=0x%x "
 649                   "fp_idx=%d.\n", sc_cmd, io_req->xid, io_req->fp_idx);
 650
 651         if (qedf->stop_io_on_error) {
 652                 qedf_stop_all_io(qedf);
 653                 rc = SUCCESS;
 654                 goto out;
 655         }
 656
 657         init_completion(&io_req->abts_done);
 658         rval = qedf_initiate_abts(io_req, true);
 659         if (rval) {
 660                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n");
 661                 goto out;
 662         }
 663
 664         wait_for_completion(&io_req->abts_done);
 665
 666         if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS ||
 667             io_req->event == QEDF_IOREQ_EV_ABORT_FAILED ||
 668             io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) {
 669                 /*
 670                  * If we get a reponse to the abort this is success from
 671                  * the perspective that all references to the command have
 672                  * been removed from the driver and firmware
 673                  */
 674                 rc = SUCCESS;
 675         } else {
 676                 /* If the abort and cleanup failed then return a failure */
 677                 rc = FAILED;
 678         }
 679
 680         if (rc == SUCCESS)
 681                 QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n",
 682                           io_req->xid);
 683         else
 684                 QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n",
 685                           io_req->xid);
 686
 687 out:
 688         return rc;
 689 }
 690
 691 static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd)
 692 {
 693         QEDF_ERR(NULL, "TARGET RESET Issued...");
 694         return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET);
 695 }
 696
 697 static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd)
 698 {
 699         QEDF_ERR(NULL, "LUN RESET Issued...\n");
 700         return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET);
 701 }
 702
 703 void qedf_wait_for_upload(struct qedf_ctx *qedf)
 704 {
 705         while (1) {
 706                 if (atomic_read(&qedf->num_offloads))
 707                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 708                             "Waiting for all uploads to complete.\n");
 709                 else
 710                         break;
 711                 msleep(500);
 712         }
 713 }
 714
 715 /* Performs soft reset of qedf_ctx by simulating a link down/up */
 716 static void qedf_ctx_soft_reset(struct fc_lport *lport)
 717 {
 718         struct qedf_ctx *qedf;
 719
 720         if (lport->vport) {
 721                 QEDF_ERR(NULL, "Cannot issue host reset on NPIV port.\n");
 722                 return;
 723         }
 724
 725         qedf = lport_priv(lport);
 726
 727         /* For host reset, essentially do a soft link up/down */
 728         atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
 729         queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 730             0);
 731         qedf_wait_for_upload(qedf);
 732         atomic_set(&qedf->link_state, QEDF_LINK_UP);
 733         qedf->vlan_id  = 0;
 734         queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 735             0);
 736 }
 737
 738 /* Reset the host by gracefully logging out and then logging back in */
 739 static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd)
 740 {
 741         struct fc_lport *lport;
 742         struct qedf_ctx *qedf;
 743         struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
 744         struct fc_rport_libfc_priv *rp = rport->dd_data;
 745         struct qedf_rport *fcport = (struct qedf_rport *)&rp[1];
 746         int rval;
 747
 748         rval = fc_remote_port_chkready(rport);
 749
 750         if (rval) {
 751                 QEDF_ERR(NULL, "device_reset rport not ready\n");
 752                 return FAILED;
 753         }
 754
 755         if (fcport == NULL) {
 756                 QEDF_ERR(NULL, "device_reset: rport is NULL\n");
 757                 return FAILED;
 758         }
 759
 760         lport = shost_priv(sc_cmd->device->host);
 761         qedf = lport_priv(lport);
 762
 763         if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN ||
 764             test_bit(QEDF_UNLOADING, &qedf->flags))
 765                 return FAILED;
 766
 767         QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued...");
 768
 769         qedf_ctx_soft_reset(lport);
 770
 771         return SUCCESS;
 772 }
 773
 774 static int qedf_slave_configure(struct scsi_device *sdev)
 775 {
 776         if (qedf_queue_depth) {
 777                 scsi_change_queue_depth(sdev, qedf_queue_depth);
 778         }
 779
 780         return 0;
 781 }
 782
 783 static struct scsi_host_template qedf_host_template = {
 784         .module         = THIS_MODULE,
 785         .name           = QEDF_MODULE_NAME,
 786         .this_id        = -1,
 787         .cmd_per_lun    = 32,
 788         .max_sectors    = 0xffff,
 789         .queuecommand   = qedf_queuecommand,
 790         .shost_attrs    = qedf_host_attrs,
 791         .eh_abort_handler       = qedf_eh_abort,
 792         .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */
 793         .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */
 794         .eh_host_reset_handler  = qedf_eh_host_reset,
 795         .slave_configure        = qedf_slave_configure,
 796         .dma_boundary = QED_HW_DMA_BOUNDARY,
 797         .sg_tablesize = QEDF_MAX_BDS_PER_CMD,
 798         .can_queue = FCOE_PARAMS_NUM_TASKS,
 799         .change_queue_depth = scsi_change_queue_depth,
 800 };
 801
 802 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen)
 803 {
 804         int rc;
 805
 806         spin_lock(&qedf_global_lock);
 807         rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global);
 808         spin_unlock(&qedf_global_lock);
 809
 810         return rc;
 811 }
 812
 813 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id)
 814 {
 815         struct qedf_rport *fcport;
 816         struct fc_rport_priv *rdata;
 817
 818         rcu_read_lock();
 819         list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
 820                 rdata = fcport->rdata;
 821                 if (rdata == NULL)
 822                         continue;
 823                 if (rdata->ids.port_id == port_id) {
 824                         rcu_read_unlock();
 825                         return fcport;
 826                 }
 827         }
 828         rcu_read_unlock();
 829
 830         /* Return NULL to caller to let them know fcport was not found */
 831         return NULL;
 832 }
 833
 834 /* Transmits an ELS frame over an offloaded session */
 835 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp)
 836 {
 837         struct fc_frame_header *fh;
 838         int rc = 0;
 839
 840         fh = fc_frame_header_get(fp);
 841         if ((fh->fh_type == FC_TYPE_ELS) &&
 842             (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
 843                 switch (fc_frame_payload_op(fp)) {
 844                 case ELS_ADISC:
 845                         qedf_send_adisc(fcport, fp);
 846                         rc = 1;
 847                         break;
 848                 }
 849         }
 850
 851         return rc;
 852 }
 853
 854 /**
 855  * qedf_xmit - qedf FCoE frame transmit function
 856  *
 857  */
 858 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp)
 859 {
 860         struct fc_lport         *base_lport;
 861         struct qedf_ctx         *qedf;
 862         struct ethhdr           *eh;
 863         struct fcoe_crc_eof     *cp;
 864         struct sk_buff          *skb;
 865         struct fc_frame_header  *fh;
 866         struct fcoe_hdr         *hp;
 867         u8                      sof, eof;
 868         u32                     crc;
 869         unsigned int            hlen, tlen, elen;
 870         int                     wlen;
 871         struct fc_stats         *stats;
 872         struct fc_lport *tmp_lport;
 873         struct fc_lport *vn_port = NULL;
 874         struct qedf_rport *fcport;
 875         int rc;
 876         u16 vlan_tci = 0;
 877
 878         qedf = (struct qedf_ctx *)lport_priv(lport);
 879
 880         fh = fc_frame_header_get(fp);
 881         skb = fp_skb(fp);
 882
 883         /* Filter out traffic to other NPIV ports on the same host */
 884         if (lport->vport)
 885                 base_lport = shost_priv(vport_to_shost(lport->vport));
 886         else
 887                 base_lport = lport;
 888
 889         /* Flag if the destination is the base port */
 890         if (base_lport->port_id == ntoh24(fh->fh_d_id)) {
 891                 vn_port = base_lport;
 892         } else {
 893                 /* Got through the list of vports attached to the base_lport
 894                  * and see if we have a match with the destination address.
 895                  */
 896                 list_for_each_entry(tmp_lport, &base_lport->vports, list) {
 897                         if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) {
 898                                 vn_port = tmp_lport;
 899                                 break;
 900                         }
 901                 }
 902         }
 903         if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) {
 904                 struct fc_rport_priv *rdata = NULL;
 905
 906                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
 907                     "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id));
 908                 kfree_skb(skb);
 909                 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id));
 910                 if (rdata)
 911                         rdata->retries = lport->max_rport_retry_count;
 912                 return -EINVAL;
 913         }
 914         /* End NPIV filtering */
 915
 916         if (!qedf->ctlr.sel_fcf) {
 917                 kfree_skb(skb);
 918                 return 0;
 919         }
 920
 921         if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) {
 922                 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n");
 923                 kfree_skb(skb);
 924                 return 0;
 925         }
 926
 927         if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
 928                 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n");
 929                 kfree_skb(skb);
 930                 return 0;
 931         }
 932
 933         if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
 934                 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb))
 935                         return 0;
 936         }
 937
 938         /* Check to see if this needs to be sent on an offloaded session */
 939         fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
 940
 941         if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
 942                 rc = qedf_xmit_l2_frame(fcport, fp);
 943                 /*
 944                  * If the frame was successfully sent over the middle path
 945                  * then do not try to also send it over the LL2 path
 946                  */
 947                 if (rc)
 948                         return 0;
 949         }
 950
 951         sof = fr_sof(fp);
 952         eof = fr_eof(fp);
 953
 954         elen = sizeof(struct ethhdr);
 955         hlen = sizeof(struct fcoe_hdr);
 956         tlen = sizeof(struct fcoe_crc_eof);
 957         wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
 958
 959         skb->ip_summed = CHECKSUM_NONE;
 960         crc = fcoe_fc_crc(fp);
 961
 962         /* copy port crc and eof to the skb buff */
 963         if (skb_is_nonlinear(skb)) {
 964                 skb_frag_t *frag;
 965
 966                 if (qedf_get_paged_crc_eof(skb, tlen)) {
 967                         kfree_skb(skb);
 968                         return -ENOMEM;
 969                 }
 970                 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
 971                 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset;
 972         } else {
 973                 cp = skb_put(skb, tlen);
 974         }
 975
 976         memset(cp, 0, sizeof(*cp));
 977         cp->fcoe_eof = eof;
 978         cp->fcoe_crc32 = cpu_to_le32(~crc);
 979         if (skb_is_nonlinear(skb)) {
 980                 kunmap_atomic(cp);
 981                 cp = NULL;
 982         }
 983
 984
 985         /* adjust skb network/transport offsets to match mac/fcoe/port */
 986         skb_push(skb, elen + hlen);
 987         skb_reset_mac_header(skb);
 988         skb_reset_network_header(skb);
 989         skb->mac_len = elen;
 990         skb->protocol = htons(ETH_P_FCOE);
 991
 992         /*
 993          * Add VLAN tag to non-offload FCoE frame based on current stored VLAN
 994          * for FIP/FCoE traffic.
 995          */
 996         __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id);
 997
 998         /* fill up mac and fcoe headers */
 999         eh = eth_hdr(skb);
1000         eh->h_proto = htons(ETH_P_FCOE);
1001         if (qedf->ctlr.map_dest)
1002                 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
1003         else
1004                 /* insert GW address */
1005                 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr);
1006
1007         /* Set the source MAC address */
1008         ether_addr_copy(eh->h_source, qedf->data_src_addr);
1009
1010         hp = (struct fcoe_hdr *)(eh + 1);
1011         memset(hp, 0, sizeof(*hp));
1012         if (FC_FCOE_VER)
1013                 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
1014         hp->fcoe_sof = sof;
1015
1016         /*update tx stats */
1017         stats = per_cpu_ptr(lport->stats, get_cpu());
1018         stats->TxFrames++;
1019         stats->TxWords += wlen;
1020         put_cpu();
1021
1022         /* Get VLAN ID from skb for printing purposes */
1023         __vlan_hwaccel_get_tag(skb, &vlan_tci);
1024
1025         /* send down to lld */
1026         fr_dev(fp) = lport;
1027         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: "
1028             "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n",
1029             ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type,
1030             vlan_tci);
1031         if (qedf_dump_frames)
1032                 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
1033                     1, skb->data, skb->len, false);
1034         qed_ops->ll2->start_xmit(qedf->cdev, skb, 0);
1035
1036         return 0;
1037 }
1038
1039 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1040 {
1041         int rval = 0;
1042         u32 *pbl;
1043         dma_addr_t page;
1044         int num_pages;
1045
1046         /* Calculate appropriate queue and PBL sizes */
1047         fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
1048         fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE);
1049         fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) *
1050             sizeof(void *);
1051         fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE;
1052
1053         fcport->sq = dma_zalloc_coherent(&qedf->pdev->dev,
1054             fcport->sq_mem_size, &fcport->sq_dma, GFP_KERNEL);
1055         if (!fcport->sq) {
1056                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n");
1057                 rval = 1;
1058                 goto out;
1059         }
1060
1061         fcport->sq_pbl = dma_zalloc_coherent(&qedf->pdev->dev,
1062             fcport->sq_pbl_size, &fcport->sq_pbl_dma, GFP_KERNEL);
1063         if (!fcport->sq_pbl) {
1064                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n");
1065                 rval = 1;
1066                 goto out_free_sq;
1067         }
1068
1069         /* Create PBL */
1070         num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE;
1071         page = fcport->sq_dma;
1072         pbl = (u32 *)fcport->sq_pbl;
1073
1074         while (num_pages--) {
1075                 *pbl = U64_LO(page);
1076                 pbl++;
1077                 *pbl = U64_HI(page);
1078                 pbl++;
1079                 page += QEDF_PAGE_SIZE;
1080         }
1081
1082         return rval;
1083
1084 out_free_sq:
1085         dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq,
1086             fcport->sq_dma);
1087 out:
1088         return rval;
1089 }
1090
1091 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1092 {
1093         if (fcport->sq_pbl)
1094                 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size,
1095                     fcport->sq_pbl, fcport->sq_pbl_dma);
1096         if (fcport->sq)
1097                 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1098                     fcport->sq, fcport->sq_dma);
1099 }
1100
1101 static int qedf_offload_connection(struct qedf_ctx *qedf,
1102         struct qedf_rport *fcport)
1103 {
1104         struct qed_fcoe_params_offload conn_info;
1105         u32 port_id;
1106         int rval;
1107         uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe));
1108
1109         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection "
1110                    "portid=%06x.\n", fcport->rdata->ids.port_id);
1111         rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle,
1112             &fcport->fw_cid, &fcport->p_doorbell);
1113         if (rval) {
1114                 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection "
1115                            "for portid=%06x.\n", fcport->rdata->ids.port_id);
1116                 rval = 1; /* For some reason qed returns 0 on failure here */
1117                 goto out;
1118         }
1119
1120         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x "
1121                    "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id,
1122                    fcport->fw_cid, fcport->handle);
1123
1124         memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload));
1125
1126         /* Fill in the offload connection info */
1127         conn_info.sq_pbl_addr = fcport->sq_pbl_dma;
1128
1129         conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl);
1130         conn_info.sq_next_page_addr =
1131             (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8));
1132
1133         /* Need to use our FCoE MAC for the offload session */
1134         ether_addr_copy(conn_info.src_mac, qedf->data_src_addr);
1135
1136         ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr);
1137
1138         conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size;
1139         conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov / 20;
1140         conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */
1141         conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size;
1142
1143         /* Set VLAN data */
1144         conn_info.vlan_tag = qedf->vlan_id <<
1145             FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT;
1146         conn_info.vlan_tag |=
1147             qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT;
1148         conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK <<
1149             FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT);
1150
1151         /* Set host port source id */
1152         port_id = fc_host_port_id(qedf->lport->host);
1153         fcport->sid = port_id;
1154         conn_info.s_id.addr_hi = (port_id & 0x000000FF);
1155         conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1156         conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1157
1158         conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq;
1159
1160         /* Set remote port destination id */
1161         port_id = fcport->rdata->rport->port_id;
1162         conn_info.d_id.addr_hi = (port_id & 0x000000FF);
1163         conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1164         conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1165
1166         conn_info.def_q_idx = 0; /* Default index for send queue? */
1167
1168         /* Set FC-TAPE specific flags if needed */
1169         if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) {
1170                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN,
1171                     "Enable CONF, REC for portid=%06x.\n",
1172                     fcport->rdata->ids.port_id);
1173                 conn_info.flags |= 1 <<
1174                     FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT;
1175                 conn_info.flags |=
1176                     ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
1177                     FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT;
1178         }
1179
1180         rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info);
1181         if (rval) {
1182                 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection "
1183                            "for portid=%06x.\n", fcport->rdata->ids.port_id);
1184                 goto out_free_conn;
1185         } else
1186                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload "
1187                            "succeeded portid=%06x total_sqe=%d.\n",
1188                            fcport->rdata->ids.port_id, total_sqe);
1189
1190         spin_lock_init(&fcport->rport_lock);
1191         atomic_set(&fcport->free_sqes, total_sqe);
1192         return 0;
1193 out_free_conn:
1194         qed_ops->release_conn(qedf->cdev, fcport->handle);
1195 out:
1196         return rval;
1197 }
1198
1199 #define QEDF_TERM_BUFF_SIZE             10
1200 static void qedf_upload_connection(struct qedf_ctx *qedf,
1201         struct qedf_rport *fcport)
1202 {
1203         void *term_params;
1204         dma_addr_t term_params_dma;
1205
1206         /* Term params needs to be a DMA coherent buffer as qed shared the
1207          * physical DMA address with the firmware. The buffer may be used in
1208          * the receive path so we may eventually have to move this.
1209          */
1210         term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE,
1211                 &term_params_dma, GFP_KERNEL);
1212
1213         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection "
1214                    "port_id=%06x.\n", fcport->rdata->ids.port_id);
1215
1216         qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma);
1217         qed_ops->release_conn(qedf->cdev, fcport->handle);
1218
1219         dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params,
1220             term_params_dma);
1221 }
1222
1223 static void qedf_cleanup_fcport(struct qedf_ctx *qedf,
1224         struct qedf_rport *fcport)
1225 {
1226         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n",
1227             fcport->rdata->ids.port_id);
1228
1229         /* Flush any remaining i/o's before we upload the connection */
1230         qedf_flush_active_ios(fcport, -1);
1231
1232         if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags))
1233                 qedf_upload_connection(qedf, fcport);
1234         qedf_free_sq(qedf, fcport);
1235         fcport->rdata = NULL;
1236         fcport->qedf = NULL;
1237 }
1238
1239 /**
1240  * This event_callback is called after successful completion of libfc
1241  * initiated target login. qedf can proceed with initiating the session
1242  * establishment.
1243  */
1244 static void qedf_rport_event_handler(struct fc_lport *lport,
1245                                 struct fc_rport_priv *rdata,
1246                                 enum fc_rport_event event)
1247 {
1248         struct qedf_ctx *qedf = lport_priv(lport);
1249         struct fc_rport *rport = rdata->rport;
1250         struct fc_rport_libfc_priv *rp;
1251         struct qedf_rport *fcport;
1252         u32 port_id;
1253         int rval;
1254         unsigned long flags;
1255
1256         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, "
1257                    "port_id = 0x%x\n", event, rdata->ids.port_id);
1258
1259         switch (event) {
1260         case RPORT_EV_READY:
1261                 if (!rport) {
1262                         QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n");
1263                         break;
1264                 }
1265
1266                 rp = rport->dd_data;
1267                 fcport = (struct qedf_rport *)&rp[1];
1268                 fcport->qedf = qedf;
1269
1270                 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) {
1271                         QEDF_ERR(&(qedf->dbg_ctx), "Not offloading "
1272                             "portid=0x%x as max number of offloaded sessions "
1273                             "reached.\n", rdata->ids.port_id);
1274                         return;
1275                 }
1276
1277                 /*
1278                  * Don't try to offload the session again. Can happen when we
1279                  * get an ADISC
1280                  */
1281                 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1282                         QEDF_WARN(&(qedf->dbg_ctx), "Session already "
1283                                    "offloaded, portid=0x%x.\n",
1284                                    rdata->ids.port_id);
1285                         return;
1286                 }
1287
1288                 if (rport->port_id == FC_FID_DIR_SERV) {
1289                         /*
1290                          * qedf_rport structure doesn't exist for
1291                          * directory server.
1292                          * We should not come here, as lport will
1293                          * take care of fabric login
1294                          */
1295                         QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not "
1296                             "exist for dir server port_id=%x\n",
1297                             rdata->ids.port_id);
1298                         break;
1299                 }
1300
1301                 if (rdata->spp_type != FC_TYPE_FCP) {
1302                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1303                             "Not offloading since spp type isn't FCP\n");
1304                         break;
1305                 }
1306                 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
1307                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1308                             "Not FCP target so not offloading\n");
1309                         break;
1310                 }
1311
1312                 fcport->rdata = rdata;
1313                 fcport->rport = rport;
1314
1315                 rval = qedf_alloc_sq(qedf, fcport);
1316                 if (rval) {
1317                         qedf_cleanup_fcport(qedf, fcport);
1318                         break;
1319                 }
1320
1321                 /* Set device type */
1322                 if (rdata->flags & FC_RP_FLAGS_RETRY &&
1323                     rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET &&
1324                     !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) {
1325                         fcport->dev_type = QEDF_RPORT_TYPE_TAPE;
1326                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1327                             "portid=%06x is a TAPE device.\n",
1328                             rdata->ids.port_id);
1329                 } else {
1330                         fcport->dev_type = QEDF_RPORT_TYPE_DISK;
1331                 }
1332
1333                 rval = qedf_offload_connection(qedf, fcport);
1334                 if (rval) {
1335                         qedf_cleanup_fcport(qedf, fcport);
1336                         break;
1337                 }
1338
1339                 /* Add fcport to list of qedf_ctx list of offloaded ports */
1340                 spin_lock_irqsave(&qedf->hba_lock, flags);
1341                 list_add_rcu(&fcport->peers, &qedf->fcports);
1342                 spin_unlock_irqrestore(&qedf->hba_lock, flags);
1343
1344                 /*
1345                  * Set the session ready bit to let everyone know that this
1346                  * connection is ready for I/O
1347                  */
1348                 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags);
1349                 atomic_inc(&qedf->num_offloads);
1350
1351                 break;
1352         case RPORT_EV_LOGO:
1353         case RPORT_EV_FAILED:
1354         case RPORT_EV_STOP:
1355                 port_id = rdata->ids.port_id;
1356                 if (port_id == FC_FID_DIR_SERV)
1357                         break;
1358
1359                 if (!rport) {
1360                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1361                             "port_id=%x - rport notcreated Yet!!\n", port_id);
1362                         break;
1363                 }
1364                 rp = rport->dd_data;
1365                 /*
1366                  * Perform session upload. Note that rdata->peers is already
1367                  * removed from disc->rports list before we get this event.
1368                  */
1369                 fcport = (struct qedf_rport *)&rp[1];
1370
1371                 /* Only free this fcport if it is offloaded already */
1372                 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1373                         set_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags);
1374                         qedf_cleanup_fcport(qedf, fcport);
1375
1376                         /*
1377                          * Remove fcport to list of qedf_ctx list of offloaded
1378                          * ports
1379                          */
1380                         spin_lock_irqsave(&qedf->hba_lock, flags);
1381                         list_del_rcu(&fcport->peers);
1382                         spin_unlock_irqrestore(&qedf->hba_lock, flags);
1383
1384                         clear_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1385                             &fcport->flags);
1386                         atomic_dec(&qedf->num_offloads);
1387                 }
1388
1389                 break;
1390
1391         case RPORT_EV_NONE:
1392                 break;
1393         }
1394 }
1395
1396 static void qedf_abort_io(struct fc_lport *lport)
1397 {
1398         /* NO-OP but need to fill in the template */
1399 }
1400
1401 static void qedf_fcp_cleanup(struct fc_lport *lport)
1402 {
1403         /*
1404          * NO-OP but need to fill in template to prevent a NULL
1405          * function pointer dereference during link down. I/Os
1406          * will be flushed when port is uploaded.
1407          */
1408 }
1409
1410 static struct libfc_function_template qedf_lport_template = {
1411         .frame_send             = qedf_xmit,
1412         .fcp_abort_io           = qedf_abort_io,
1413         .fcp_cleanup            = qedf_fcp_cleanup,
1414         .rport_event_callback   = qedf_rport_event_handler,
1415         .elsct_send             = qedf_elsct_send,
1416 };
1417
1418 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf)
1419 {
1420         fcoe_ctlr_init(&qedf->ctlr, FIP_ST_AUTO);
1421
1422         qedf->ctlr.send = qedf_fip_send;
1423         qedf->ctlr.get_src_addr = qedf_get_src_mac;
1424         ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac);
1425 }
1426
1427 static void qedf_setup_fdmi(struct qedf_ctx *qedf)
1428 {
1429         struct fc_lport *lport = qedf->lport;
1430         struct fc_host_attrs *fc_host = shost_to_fc_host(lport->host);
1431         u8 buf[8];
1432         int i, pos;
1433
1434         /*
1435          * fdmi_enabled needs to be set for libfc to execute FDMI registration.
1436          */
1437         lport->fdmi_enabled = 1;
1438
1439         /*
1440          * Setup the necessary fc_host attributes to that will be used to fill
1441          * in the FDMI information.
1442          */
1443
1444         /* Get the PCI-e Device Serial Number Capability */
1445         pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN);
1446         if (pos) {
1447                 pos += 4;
1448                 for (i = 0; i < 8; i++)
1449                         pci_read_config_byte(qedf->pdev, pos + i, &buf[i]);
1450
1451                 snprintf(fc_host->serial_number,
1452                     sizeof(fc_host->serial_number),
1453                     "%02X%02X%02X%02X%02X%02X%02X%02X",
1454                     buf[7], buf[6], buf[5], buf[4],
1455                     buf[3], buf[2], buf[1], buf[0]);
1456         } else
1457                 snprintf(fc_host->serial_number,
1458                     sizeof(fc_host->serial_number), "Unknown");
1459
1460         snprintf(fc_host->manufacturer,
1461             sizeof(fc_host->manufacturer), "%s", "Cavium Inc.");
1462
1463         snprintf(fc_host->model, sizeof(fc_host->model), "%s", "QL41000");
1464
1465         snprintf(fc_host->model_description, sizeof(fc_host->model_description),
1466             "%s", "QLogic FastLinQ QL41000 Series 10/25/40/50GGbE Controller"
1467             "(FCoE)");
1468
1469         snprintf(fc_host->hardware_version, sizeof(fc_host->hardware_version),
1470             "Rev %d", qedf->pdev->revision);
1471
1472         snprintf(fc_host->driver_version, sizeof(fc_host->driver_version),
1473             "%s", QEDF_VERSION);
1474
1475         snprintf(fc_host->firmware_version, sizeof(fc_host->firmware_version),
1476             "%d.%d.%d.%d", FW_MAJOR_VERSION, FW_MINOR_VERSION,
1477             FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
1478 }
1479
1480 static int qedf_lport_setup(struct qedf_ctx *qedf)
1481 {
1482         struct fc_lport *lport = qedf->lport;
1483
1484         lport->link_up = 0;
1485         lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1486         lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1487         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1488             FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1489         lport->boot_time = jiffies;
1490         lport->e_d_tov = 2 * 1000;
1491         lport->r_a_tov = 10 * 1000;
1492
1493         /* Set NPIV support */
1494         lport->does_npiv = 1;
1495         fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV;
1496
1497         fc_set_wwnn(lport, qedf->wwnn);
1498         fc_set_wwpn(lport, qedf->wwpn);
1499
1500         fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0);
1501
1502         /* Allocate the exchange manager */
1503         fc_exch_mgr_alloc(lport, FC_CLASS_3, qedf->max_scsi_xid + 1,
1504             qedf->max_els_xid, NULL);
1505
1506         if (fc_lport_init_stats(lport))
1507                 return -ENOMEM;
1508
1509         /* Finish lport config */
1510         fc_lport_config(lport);
1511
1512         /* Set max frame size */
1513         fc_set_mfs(lport, QEDF_MFS);
1514         fc_host_maxframe_size(lport->host) = lport->mfs;
1515
1516         /* Set default dev_loss_tmo based on module parameter */
1517         fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo;
1518
1519         /* Set symbolic node name */
1520         snprintf(fc_host_symbolic_name(lport->host), 256,
1521             "QLogic %s v%s", QEDF_MODULE_NAME, QEDF_VERSION);
1522
1523         qedf_setup_fdmi(qedf);
1524
1525         return 0;
1526 }
1527
1528 /*
1529  * NPIV functions
1530  */
1531
1532 static int qedf_vport_libfc_config(struct fc_vport *vport,
1533         struct fc_lport *lport)
1534 {
1535         lport->link_up = 0;
1536         lport->qfull = 0;
1537         lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1538         lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1539         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1540             FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1541         lport->boot_time = jiffies;
1542         lport->e_d_tov = 2 * 1000;
1543         lport->r_a_tov = 10 * 1000;
1544         lport->does_npiv = 1; /* Temporary until we add NPIV support */
1545
1546         /* Allocate stats for vport */
1547         if (fc_lport_init_stats(lport))
1548                 return -ENOMEM;
1549
1550         /* Finish lport config */
1551         fc_lport_config(lport);
1552
1553         /* offload related configuration */
1554         lport->crc_offload = 0;
1555         lport->seq_offload = 0;
1556         lport->lro_enabled = 0;
1557         lport->lro_xid = 0;
1558         lport->lso_max = 0;
1559
1560         return 0;
1561 }
1562
1563 static int qedf_vport_create(struct fc_vport *vport, bool disabled)
1564 {
1565         struct Scsi_Host *shost = vport_to_shost(vport);
1566         struct fc_lport *n_port = shost_priv(shost);
1567         struct fc_lport *vn_port;
1568         struct qedf_ctx *base_qedf = lport_priv(n_port);
1569         struct qedf_ctx *vport_qedf;
1570
1571         char buf[32];
1572         int rc = 0;
1573
1574         rc = fcoe_validate_vport_create(vport);
1575         if (rc) {
1576                 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1577                 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, "
1578                            "WWPN (0x%s) already exists.\n", buf);
1579                 goto err1;
1580         }
1581
1582         if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) {
1583                 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport "
1584                            "because link is not up.\n");
1585                 rc = -EIO;
1586                 goto err1;
1587         }
1588
1589         vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx));
1590         if (!vn_port) {
1591                 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport "
1592                            "for vport.\n");
1593                 rc = -ENOMEM;
1594                 goto err1;
1595         }
1596
1597         fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1598         QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n",
1599             buf);
1600
1601         /* Copy some fields from base_qedf */
1602         vport_qedf = lport_priv(vn_port);
1603         memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx));
1604
1605         /* Set qedf data specific to this vport */
1606         vport_qedf->lport = vn_port;
1607         /* Use same hba_lock as base_qedf */
1608         vport_qedf->hba_lock = base_qedf->hba_lock;
1609         vport_qedf->pdev = base_qedf->pdev;
1610         vport_qedf->cmd_mgr = base_qedf->cmd_mgr;
1611         init_completion(&vport_qedf->flogi_compl);
1612         INIT_LIST_HEAD(&vport_qedf->fcports);
1613
1614         rc = qedf_vport_libfc_config(vport, vn_port);
1615         if (rc) {
1616                 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory "
1617                     "for lport stats.\n");
1618                 goto err2;
1619         }
1620
1621         fc_set_wwnn(vn_port, vport->node_name);
1622         fc_set_wwpn(vn_port, vport->port_name);
1623         vport_qedf->wwnn = vn_port->wwnn;
1624         vport_qedf->wwpn = vn_port->wwpn;
1625
1626         vn_port->host->transportt = qedf_fc_vport_transport_template;
1627         vn_port->host->can_queue = QEDF_MAX_ELS_XID;
1628         vn_port->host->max_lun = qedf_max_lun;
1629         vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD;
1630         vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN;
1631
1632         rc = scsi_add_host(vn_port->host, &vport->dev);
1633         if (rc) {
1634                 QEDF_WARN(&(base_qedf->dbg_ctx), "Error adding Scsi_Host.\n");
1635                 goto err2;
1636         }
1637
1638         /* Set default dev_loss_tmo based on module parameter */
1639         fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo;
1640
1641         /* Init libfc stuffs */
1642         memcpy(&vn_port->tt, &qedf_lport_template,
1643                 sizeof(qedf_lport_template));
1644         fc_exch_init(vn_port);
1645         fc_elsct_init(vn_port);
1646         fc_lport_init(vn_port);
1647         fc_disc_init(vn_port);
1648         fc_disc_config(vn_port, vn_port);
1649
1650
1651         /* Allocate the exchange manager */
1652         shost = vport_to_shost(vport);
1653         n_port = shost_priv(shost);
1654         fc_exch_mgr_list_clone(n_port, vn_port);
1655
1656         /* Set max frame size */
1657         fc_set_mfs(vn_port, QEDF_MFS);
1658
1659         fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN;
1660
1661         if (disabled) {
1662                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1663         } else {
1664                 vn_port->boot_time = jiffies;
1665                 fc_fabric_login(vn_port);
1666                 fc_vport_setlink(vn_port);
1667         }
1668
1669         QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n",
1670                    vn_port);
1671
1672         /* Set up debug context for vport */
1673         vport_qedf->dbg_ctx.host_no = vn_port->host->host_no;
1674         vport_qedf->dbg_ctx.pdev = base_qedf->pdev;
1675
1676 err2:
1677         scsi_host_put(vn_port->host);
1678 err1:
1679         return rc;
1680 }
1681
1682 static int qedf_vport_destroy(struct fc_vport *vport)
1683 {
1684         struct Scsi_Host *shost = vport_to_shost(vport);
1685         struct fc_lport *n_port = shost_priv(shost);
1686         struct fc_lport *vn_port = vport->dd_data;
1687         struct qedf_ctx *qedf = lport_priv(vn_port);
1688
1689         if (!qedf) {
1690                 QEDF_ERR(NULL, "qedf is NULL.\n");
1691                 goto out;
1692         }
1693
1694         /* Set unloading bit on vport qedf_ctx to prevent more I/O */
1695         set_bit(QEDF_UNLOADING, &qedf->flags);
1696
1697         mutex_lock(&n_port->lp_mutex);
1698         list_del(&vn_port->list);
1699         mutex_unlock(&n_port->lp_mutex);
1700
1701         fc_fabric_logoff(vn_port);
1702         fc_lport_destroy(vn_port);
1703
1704         /* Detach from scsi-ml */
1705         fc_remove_host(vn_port->host);
1706         scsi_remove_host(vn_port->host);
1707
1708         /*
1709          * Only try to release the exchange manager if the vn_port
1710          * configuration is complete.
1711          */
1712         if (vn_port->state == LPORT_ST_READY)
1713                 fc_exch_mgr_free(vn_port);
1714
1715         /* Free memory used by statistical counters */
1716         fc_lport_free_stats(vn_port);
1717
1718         /* Release Scsi_Host */
1719         if (vn_port->host)
1720                 scsi_host_put(vn_port->host);
1721
1722 out:
1723         return 0;
1724 }
1725
1726 static int qedf_vport_disable(struct fc_vport *vport, bool disable)
1727 {
1728         struct fc_lport *lport = vport->dd_data;
1729
1730         if (disable) {
1731                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1732                 fc_fabric_logoff(lport);
1733         } else {
1734                 lport->boot_time = jiffies;
1735                 fc_fabric_login(lport);
1736                 fc_vport_setlink(lport);
1737         }
1738         return 0;
1739 }
1740
1741 /*
1742  * During removal we need to wait for all the vports associated with a port
1743  * to be destroyed so we avoid a race condition where libfc is still trying
1744  * to reap vports while the driver remove function has already reaped the
1745  * driver contexts associated with the physical port.
1746  */
1747 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf)
1748 {
1749         struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host);
1750
1751         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
1752             "Entered.\n");
1753         while (fc_host->npiv_vports_inuse > 0) {
1754                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
1755                     "Waiting for all vports to be reaped.\n");
1756                 msleep(1000);
1757         }
1758 }
1759
1760 /**
1761  * qedf_fcoe_reset - Resets the fcoe
1762  *
1763  * @shost: shost the reset is from
1764  *
1765  * Returns: always 0
1766  */
1767 static int qedf_fcoe_reset(struct Scsi_Host *shost)
1768 {
1769         struct fc_lport *lport = shost_priv(shost);
1770
1771         qedf_ctx_soft_reset(lport);
1772         return 0;
1773 }
1774
1775 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host
1776         *shost)
1777 {
1778         struct fc_host_statistics *qedf_stats;
1779         struct fc_lport *lport = shost_priv(shost);
1780         struct qedf_ctx *qedf = lport_priv(lport);
1781         struct qed_fcoe_stats *fw_fcoe_stats;
1782
1783         qedf_stats = fc_get_host_stats(shost);
1784
1785         /* We don't collect offload stats for specific NPIV ports */
1786         if (lport->vport)
1787                 goto out;
1788
1789         fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL);
1790         if (!fw_fcoe_stats) {
1791                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for "
1792                     "fw_fcoe_stats.\n");
1793                 goto out;
1794         }
1795
1796         mutex_lock(&qedf->stats_mutex);
1797
1798         /* Query firmware for offload stats */
1799         qed_ops->get_stats(qedf->cdev, fw_fcoe_stats);
1800
1801         /*
1802          * The expectation is that we add our offload stats to the stats
1803          * being maintained by libfc each time the fc_get_host_status callback
1804          * is invoked. The additions are not carried over for each call to
1805          * the fc_get_host_stats callback.
1806          */
1807         qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt +
1808             fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt +
1809             fw_fcoe_stats->fcoe_tx_other_pkt_cnt;
1810         qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt +
1811             fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt +
1812             fw_fcoe_stats->fcoe_rx_other_pkt_cnt;
1813         qedf_stats->fcp_input_megabytes +=
1814             do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000);
1815         qedf_stats->fcp_output_megabytes +=
1816             do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000);
1817         qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4;
1818         qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4;
1819         qedf_stats->invalid_crc_count +=
1820             fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt;
1821         qedf_stats->dumped_frames =
1822             fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
1823         qedf_stats->error_frames +=
1824             fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
1825         qedf_stats->fcp_input_requests += qedf->input_requests;
1826         qedf_stats->fcp_output_requests += qedf->output_requests;
1827         qedf_stats->fcp_control_requests += qedf->control_requests;
1828         qedf_stats->fcp_packet_aborts += qedf->packet_aborts;
1829         qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures;
1830
1831         mutex_unlock(&qedf->stats_mutex);
1832         kfree(fw_fcoe_stats);
1833 out:
1834         return qedf_stats;
1835 }
1836
1837 static struct fc_function_template qedf_fc_transport_fn = {
1838         .show_host_node_name = 1,
1839         .show_host_port_name = 1,
1840         .show_host_supported_classes = 1,
1841         .show_host_supported_fc4s = 1,
1842         .show_host_active_fc4s = 1,
1843         .show_host_maxframe_size = 1,
1844
1845         .show_host_port_id = 1,
1846         .show_host_supported_speeds = 1,
1847         .get_host_speed = fc_get_host_speed,
1848         .show_host_speed = 1,
1849         .show_host_port_type = 1,
1850         .get_host_port_state = fc_get_host_port_state,
1851         .show_host_port_state = 1,
1852         .show_host_symbolic_name = 1,
1853
1854         /*
1855          * Tell FC transport to allocate enough space to store the backpointer
1856          * for the associate qedf_rport struct.
1857          */
1858         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
1859                                 sizeof(struct qedf_rport)),
1860         .show_rport_maxframe_size = 1,
1861         .show_rport_supported_classes = 1,
1862         .show_host_fabric_name = 1,
1863         .show_starget_node_name = 1,
1864         .show_starget_port_name = 1,
1865         .show_starget_port_id = 1,
1866         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
1867         .show_rport_dev_loss_tmo = 1,
1868         .get_fc_host_stats = qedf_fc_get_host_stats,
1869         .issue_fc_host_lip = qedf_fcoe_reset,
1870         .vport_create = qedf_vport_create,
1871         .vport_delete = qedf_vport_destroy,
1872         .vport_disable = qedf_vport_disable,
1873         .bsg_request = fc_lport_bsg_request,
1874 };
1875
1876 static struct fc_function_template qedf_fc_vport_transport_fn = {
1877         .show_host_node_name = 1,
1878         .show_host_port_name = 1,
1879         .show_host_supported_classes = 1,
1880         .show_host_supported_fc4s = 1,
1881         .show_host_active_fc4s = 1,
1882         .show_host_maxframe_size = 1,
1883         .show_host_port_id = 1,
1884         .show_host_supported_speeds = 1,
1885         .get_host_speed = fc_get_host_speed,
1886         .show_host_speed = 1,
1887         .show_host_port_type = 1,
1888         .get_host_port_state = fc_get_host_port_state,
1889         .show_host_port_state = 1,
1890         .show_host_symbolic_name = 1,
1891         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
1892                                 sizeof(struct qedf_rport)),
1893         .show_rport_maxframe_size = 1,
1894         .show_rport_supported_classes = 1,
1895         .show_host_fabric_name = 1,
1896         .show_starget_node_name = 1,
1897         .show_starget_port_name = 1,
1898         .show_starget_port_id = 1,
1899         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
1900         .show_rport_dev_loss_tmo = 1,
1901         .get_fc_host_stats = fc_get_host_stats,
1902         .issue_fc_host_lip = qedf_fcoe_reset,
1903         .bsg_request = fc_lport_bsg_request,
1904 };
1905
1906 static bool qedf_fp_has_work(struct qedf_fastpath *fp)
1907 {
1908         struct qedf_ctx *qedf = fp->qedf;
1909         struct global_queue *que;
1910         struct qed_sb_info *sb_info = fp->sb_info;
1911         struct status_block_e4 *sb = sb_info->sb_virt;
1912         u16 prod_idx;
1913
1914         /* Get the pointer to the global CQ this completion is on */
1915         que = qedf->global_queues[fp->sb_id];
1916
1917         /* Be sure all responses have been written to PI */
1918         rmb();
1919
1920         /* Get the current firmware producer index */
1921         prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
1922
1923         return (que->cq_prod_idx != prod_idx);
1924 }
1925
1926 /*
1927  * Interrupt handler code.
1928  */
1929
1930 /* Process completion queue and copy CQE contents for deferred processesing
1931  *
1932  * Return true if we should wake the I/O thread, false if not.
1933  */
1934 static bool qedf_process_completions(struct qedf_fastpath *fp)
1935 {
1936         struct qedf_ctx *qedf = fp->qedf;
1937         struct qed_sb_info *sb_info = fp->sb_info;
1938         struct status_block_e4 *sb = sb_info->sb_virt;
1939         struct global_queue *que;
1940         u16 prod_idx;
1941         struct fcoe_cqe *cqe;
1942         struct qedf_io_work *io_work;
1943         int num_handled = 0;
1944         unsigned int cpu;
1945         struct qedf_ioreq *io_req = NULL;
1946         u16 xid;
1947         u16 new_cqes;
1948         u32 comp_type;
1949
1950         /* Get the current firmware producer index */
1951         prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
1952
1953         /* Get the pointer to the global CQ this completion is on */
1954         que = qedf->global_queues[fp->sb_id];
1955
1956         /* Calculate the amount of new elements since last processing */
1957         new_cqes = (prod_idx >= que->cq_prod_idx) ?
1958             (prod_idx - que->cq_prod_idx) :
1959             0x10000 - que->cq_prod_idx + prod_idx;
1960
1961         /* Save producer index */
1962         que->cq_prod_idx = prod_idx;
1963
1964         while (new_cqes) {
1965                 fp->completions++;
1966                 num_handled++;
1967                 cqe = &que->cq[que->cq_cons_idx];
1968
1969                 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
1970                     FCOE_CQE_CQE_TYPE_MASK;
1971
1972                 /*
1973                  * Process unsolicited CQEs directly in the interrupt handler
1974                  * sine we need the fastpath ID
1975                  */
1976                 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) {
1977                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL,
1978                            "Unsolicated CQE.\n");
1979                         qedf_process_unsol_compl(qedf, fp->sb_id, cqe);
1980                         /*
1981                          * Don't add a work list item.  Increment consumer
1982                          * consumer index and move on.
1983                          */
1984                         goto inc_idx;
1985                 }
1986
1987                 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
1988                 io_req = &qedf->cmd_mgr->cmds[xid];
1989
1990                 /*
1991                  * Figure out which percpu thread we should queue this I/O
1992                  * on.
1993                  */
1994                 if (!io_req)
1995                         /* If there is not io_req assocated with this CQE
1996                          * just queue it on CPU 0
1997                          */
1998                         cpu = 0;
1999                 else {
2000                         cpu = io_req->cpu;
2001                         io_req->int_cpu = smp_processor_id();
2002                 }
2003
2004                 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC);
2005                 if (!io_work) {
2006                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate "
2007                                    "work for I/O completion.\n");
2008                         continue;
2009                 }
2010                 memset(io_work, 0, sizeof(struct qedf_io_work));
2011
2012                 INIT_WORK(&io_work->work, qedf_fp_io_handler);
2013
2014                 /* Copy contents of CQE for deferred processing */
2015                 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe));
2016
2017                 io_work->qedf = fp->qedf;
2018                 io_work->fp = NULL; /* Only used for unsolicited frames */
2019
2020                 queue_work_on(cpu, qedf_io_wq, &io_work->work);
2021
2022 inc_idx:
2023                 que->cq_cons_idx++;
2024                 if (que->cq_cons_idx == fp->cq_num_entries)
2025                         que->cq_cons_idx = 0;
2026                 new_cqes--;
2027         }
2028
2029         return true;
2030 }
2031
2032
2033 /* MSI-X fastpath handler code */
2034 static irqreturn_t qedf_msix_handler(int irq, void *dev_id)
2035 {
2036         struct qedf_fastpath *fp = dev_id;
2037
2038         if (!fp) {
2039                 QEDF_ERR(NULL, "fp is null.\n");
2040                 return IRQ_HANDLED;
2041         }
2042         if (!fp->sb_info) {
2043                 QEDF_ERR(NULL, "fp->sb_info in null.");
2044                 return IRQ_HANDLED;
2045         }
2046
2047         /*
2048          * Disable interrupts for this status block while we process new
2049          * completions
2050          */
2051         qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/);
2052
2053         while (1) {
2054                 qedf_process_completions(fp);
2055
2056                 if (qedf_fp_has_work(fp) == 0) {
2057                         /* Update the sb information */
2058                         qed_sb_update_sb_idx(fp->sb_info);
2059
2060                         /* Check for more work */
2061                         rmb();
2062
2063                         if (qedf_fp_has_work(fp) == 0) {
2064                                 /* Re-enable interrupts */
2065                                 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
2066                                 return IRQ_HANDLED;
2067                         }
2068                 }
2069         }
2070
2071         /* Do we ever want to break out of above loop? */
2072         return IRQ_HANDLED;
2073 }
2074
2075 /* simd handler for MSI/INTa */
2076 static void qedf_simd_int_handler(void *cookie)
2077 {
2078         /* Cookie is qedf_ctx struct */
2079         struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2080
2081         QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf);
2082 }
2083
2084 #define QEDF_SIMD_HANDLER_NUM           0
2085 static void qedf_sync_free_irqs(struct qedf_ctx *qedf)
2086 {
2087         int i;
2088
2089         if (qedf->int_info.msix_cnt) {
2090                 for (i = 0; i < qedf->int_info.used_cnt; i++) {
2091                         synchronize_irq(qedf->int_info.msix[i].vector);
2092                         irq_set_affinity_hint(qedf->int_info.msix[i].vector,
2093                             NULL);
2094                         irq_set_affinity_notifier(qedf->int_info.msix[i].vector,
2095                             NULL);
2096                         free_irq(qedf->int_info.msix[i].vector,
2097                             &qedf->fp_array[i]);
2098                 }
2099         } else
2100                 qed_ops->common->simd_handler_clean(qedf->cdev,
2101                     QEDF_SIMD_HANDLER_NUM);
2102
2103         qedf->int_info.used_cnt = 0;
2104         qed_ops->common->set_fp_int(qedf->cdev, 0);
2105 }
2106
2107 static int qedf_request_msix_irq(struct qedf_ctx *qedf)
2108 {
2109         int i, rc, cpu;
2110
2111         cpu = cpumask_first(cpu_online_mask);
2112         for (i = 0; i < qedf->num_queues; i++) {
2113                 rc = request_irq(qedf->int_info.msix[i].vector,
2114                     qedf_msix_handler, 0, "qedf", &qedf->fp_array[i]);
2115
2116                 if (rc) {
2117                         QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n");
2118                         qedf_sync_free_irqs(qedf);
2119                         return rc;
2120                 }
2121
2122                 qedf->int_info.used_cnt++;
2123                 rc = irq_set_affinity_hint(qedf->int_info.msix[i].vector,
2124                     get_cpu_mask(cpu));
2125                 cpu = cpumask_next(cpu, cpu_online_mask);
2126         }
2127
2128         return 0;
2129 }
2130
2131 static int qedf_setup_int(struct qedf_ctx *qedf)
2132 {
2133         int rc = 0;
2134
2135         /*
2136          * Learn interrupt configuration
2137          */
2138         rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus());
2139         if (rc <= 0)
2140                 return 0;
2141
2142         rc  = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info);
2143         if (rc)
2144                 return 0;
2145
2146         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = "
2147                    "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt,
2148                    num_online_cpus());
2149
2150         if (qedf->int_info.msix_cnt)
2151                 return qedf_request_msix_irq(qedf);
2152
2153         qed_ops->common->simd_handler_config(qedf->cdev, &qedf,
2154             QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler);
2155         qedf->int_info.used_cnt = 1;
2156
2157         QEDF_ERR(&qedf->dbg_ctx, "Only MSI-X supported. Failing probe.\n");
2158         return -EINVAL;
2159 }
2160
2161 /* Main function for libfc frame reception */
2162 static void qedf_recv_frame(struct qedf_ctx *qedf,
2163         struct sk_buff *skb)
2164 {
2165         u32 fr_len;
2166         struct fc_lport *lport;
2167         struct fc_frame_header *fh;
2168         struct fcoe_crc_eof crc_eof;
2169         struct fc_frame *fp;
2170         u8 *mac = NULL;
2171         u8 *dest_mac = NULL;
2172         struct fcoe_hdr *hp;
2173         struct qedf_rport *fcport;
2174         struct fc_lport *vn_port;
2175         u32 f_ctl;
2176
2177         lport = qedf->lport;
2178         if (lport == NULL || lport->state == LPORT_ST_DISABLED) {
2179                 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n");
2180                 kfree_skb(skb);
2181                 return;
2182         }
2183
2184         if (skb_is_nonlinear(skb))
2185                 skb_linearize(skb);
2186         mac = eth_hdr(skb)->h_source;
2187         dest_mac = eth_hdr(skb)->h_dest;
2188
2189         /* Pull the header */
2190         hp = (struct fcoe_hdr *)skb->data;
2191         fh = (struct fc_frame_header *) skb_transport_header(skb);
2192         skb_pull(skb, sizeof(struct fcoe_hdr));
2193         fr_len = skb->len - sizeof(struct fcoe_crc_eof);
2194
2195         fp = (struct fc_frame *)skb;
2196         fc_frame_init(fp);
2197         fr_dev(fp) = lport;
2198         fr_sof(fp) = hp->fcoe_sof;
2199         if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
2200                 kfree_skb(skb);
2201                 return;
2202         }
2203         fr_eof(fp) = crc_eof.fcoe_eof;
2204         fr_crc(fp) = crc_eof.fcoe_crc32;
2205         if (pskb_trim(skb, fr_len)) {
2206                 kfree_skb(skb);
2207                 return;
2208         }
2209
2210         fh = fc_frame_header_get(fp);
2211
2212         /*
2213          * Invalid frame filters.
2214          */
2215
2216         if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
2217             fh->fh_type == FC_TYPE_FCP) {
2218                 /* Drop FCP data. We dont this in L2 path */
2219                 kfree_skb(skb);
2220                 return;
2221         }
2222         if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
2223             fh->fh_type == FC_TYPE_ELS) {
2224                 switch (fc_frame_payload_op(fp)) {
2225                 case ELS_LOGO:
2226                         if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
2227                                 /* drop non-FIP LOGO */
2228                                 kfree_skb(skb);
2229                                 return;
2230                         }
2231                         break;
2232                 }
2233         }
2234
2235         if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
2236                 /* Drop incoming ABTS */
2237                 kfree_skb(skb);
2238                 return;
2239         }
2240
2241         if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
2242                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2243                     "FC frame d_id mismatch with MAC %pM.\n", dest_mac);
2244                 kfree_skb(skb);
2245                 return;
2246         }
2247
2248         if (qedf->ctlr.state) {
2249                 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) {
2250                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2251                             "Wrong source address: mac:%pM dest_addr:%pM.\n",
2252                             mac, qedf->ctlr.dest_addr);
2253                         kfree_skb(skb);
2254                         return;
2255                 }
2256         }
2257
2258         vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
2259
2260         /*
2261          * If the destination ID from the frame header does not match what we
2262          * have on record for lport and the search for a NPIV port came up
2263          * empty then this is not addressed to our port so simply drop it.
2264          */
2265         if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
2266                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2267                     "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n",
2268                     lport->port_id, ntoh24(fh->fh_d_id));
2269                 kfree_skb(skb);
2270                 return;
2271         }
2272
2273         f_ctl = ntoh24(fh->fh_f_ctl);
2274         if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) &&
2275             (f_ctl & FC_FC_EX_CTX)) {
2276                 /* Drop incoming ABTS response that has both SEQ/EX CTX set */
2277                 kfree_skb(skb);
2278                 return;
2279         }
2280
2281         /*
2282          * If a connection is uploading, drop incoming FCoE frames as there
2283          * is a small window where we could try to return a frame while libfc
2284          * is trying to clean things up.
2285          */
2286
2287         /* Get fcport associated with d_id if it exists */
2288         fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
2289
2290         if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
2291             &fcport->flags)) {
2292                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2293                     "Connection uploading, dropping fp=%p.\n", fp);
2294                 kfree_skb(skb);
2295                 return;
2296         }
2297
2298         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: "
2299             "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp,
2300             ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl,
2301             fh->fh_type);
2302         if (qedf_dump_frames)
2303                 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
2304                     1, skb->data, skb->len, false);
2305         fc_exch_recv(lport, fp);
2306 }
2307
2308 static void qedf_ll2_process_skb(struct work_struct *work)
2309 {
2310         struct qedf_skb_work *skb_work =
2311             container_of(work, struct qedf_skb_work, work);
2312         struct qedf_ctx *qedf = skb_work->qedf;
2313         struct sk_buff *skb = skb_work->skb;
2314         struct ethhdr *eh;
2315
2316         if (!qedf) {
2317                 QEDF_ERR(NULL, "qedf is NULL\n");
2318                 goto err_out;
2319         }
2320
2321         eh = (struct ethhdr *)skb->data;
2322
2323         /* Undo VLAN encapsulation */
2324         if (eh->h_proto == htons(ETH_P_8021Q)) {
2325                 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
2326                 eh = skb_pull(skb, VLAN_HLEN);
2327                 skb_reset_mac_header(skb);
2328         }
2329
2330         /*
2331          * Process either a FIP frame or FCoE frame based on the
2332          * protocol value.  If it's not either just drop the
2333          * frame.
2334          */
2335         if (eh->h_proto == htons(ETH_P_FIP)) {
2336                 qedf_fip_recv(qedf, skb);
2337                 goto out;
2338         } else if (eh->h_proto == htons(ETH_P_FCOE)) {
2339                 __skb_pull(skb, ETH_HLEN);
2340                 qedf_recv_frame(qedf, skb);
2341                 goto out;
2342         } else
2343                 goto err_out;
2344
2345 err_out:
2346         kfree_skb(skb);
2347 out:
2348         kfree(skb_work);
2349         return;
2350 }
2351
2352 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb,
2353         u32 arg1, u32 arg2)
2354 {
2355         struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2356         struct qedf_skb_work *skb_work;
2357
2358         skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC);
2359         if (!skb_work) {
2360                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so "
2361                            "dropping frame.\n");
2362                 kfree_skb(skb);
2363                 return 0;
2364         }
2365
2366         INIT_WORK(&skb_work->work, qedf_ll2_process_skb);
2367         skb_work->skb = skb;
2368         skb_work->qedf = qedf;
2369         queue_work(qedf->ll2_recv_wq, &skb_work->work);
2370
2371         return 0;
2372 }
2373
2374 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = {
2375         .rx_cb = qedf_ll2_rx,
2376         .tx_cb = NULL,
2377 };
2378
2379 /* Main thread to process I/O completions */
2380 void qedf_fp_io_handler(struct work_struct *work)
2381 {
2382         struct qedf_io_work *io_work =
2383             container_of(work, struct qedf_io_work, work);
2384         u32 comp_type;
2385
2386         /*
2387          * Deferred part of unsolicited CQE sends
2388          * frame to libfc.
2389          */
2390         comp_type = (io_work->cqe.cqe_data >>
2391             FCOE_CQE_CQE_TYPE_SHIFT) &
2392             FCOE_CQE_CQE_TYPE_MASK;
2393         if (comp_type == FCOE_UNSOLIC_CQE_TYPE &&
2394             io_work->fp)
2395                 fc_exch_recv(io_work->qedf->lport, io_work->fp);
2396         else
2397                 qedf_process_cqe(io_work->qedf, &io_work->cqe);
2398
2399         kfree(io_work);
2400 }
2401
2402 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf,
2403         struct qed_sb_info *sb_info, u16 sb_id)
2404 {
2405         struct status_block_e4 *sb_virt;
2406         dma_addr_t sb_phys;
2407         int ret;
2408
2409         sb_virt = dma_alloc_coherent(&qedf->pdev->dev,
2410             sizeof(struct status_block_e4), &sb_phys, GFP_KERNEL);
2411
2412         if (!sb_virt) {
2413                 QEDF_ERR(&(qedf->dbg_ctx), "Status block allocation failed "
2414                           "for id = %d.\n", sb_id);
2415                 return -ENOMEM;
2416         }
2417
2418         ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys,
2419             sb_id, QED_SB_TYPE_STORAGE);
2420
2421         if (ret) {
2422                 QEDF_ERR(&(qedf->dbg_ctx), "Status block initialization "
2423                           "failed for id = %d.\n", sb_id);
2424                 return ret;
2425         }
2426
2427         return 0;
2428 }
2429
2430 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info)
2431 {
2432         if (sb_info->sb_virt)
2433                 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt),
2434                     (void *)sb_info->sb_virt, sb_info->sb_phys);
2435 }
2436
2437 static void qedf_destroy_sb(struct qedf_ctx *qedf)
2438 {
2439         int id;
2440         struct qedf_fastpath *fp = NULL;
2441
2442         for (id = 0; id < qedf->num_queues; id++) {
2443                 fp = &(qedf->fp_array[id]);
2444                 if (fp->sb_id == QEDF_SB_ID_NULL)
2445                         break;
2446                 qedf_free_sb(qedf, fp->sb_info);
2447                 kfree(fp->sb_info);
2448         }
2449         kfree(qedf->fp_array);
2450 }
2451
2452 static int qedf_prepare_sb(struct qedf_ctx *qedf)
2453 {
2454         int id;
2455         struct qedf_fastpath *fp;
2456         int ret;
2457
2458         qedf->fp_array =
2459             kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath),
2460                 GFP_KERNEL);
2461
2462         if (!qedf->fp_array) {
2463                 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation "
2464                           "failed.\n");
2465                 return -ENOMEM;
2466         }
2467
2468         for (id = 0; id < qedf->num_queues; id++) {
2469                 fp = &(qedf->fp_array[id]);
2470                 fp->sb_id = QEDF_SB_ID_NULL;
2471                 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL);
2472                 if (!fp->sb_info) {
2473                         QEDF_ERR(&(qedf->dbg_ctx), "SB info struct "
2474                                   "allocation failed.\n");
2475                         goto err;
2476                 }
2477                 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id);
2478                 if (ret) {
2479                         QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and "
2480                                   "initialization failed.\n");
2481                         goto err;
2482                 }
2483                 fp->sb_id = id;
2484                 fp->qedf = qedf;
2485                 fp->cq_num_entries =
2486                     qedf->global_queues[id]->cq_mem_size /
2487                     sizeof(struct fcoe_cqe);
2488         }
2489 err:
2490         return 0;
2491 }
2492
2493 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe)
2494 {
2495         u16 xid;
2496         struct qedf_ioreq *io_req;
2497         struct qedf_rport *fcport;
2498         u32 comp_type;
2499
2500         comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2501             FCOE_CQE_CQE_TYPE_MASK;
2502
2503         xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2504         io_req = &qedf->cmd_mgr->cmds[xid];
2505
2506         /* Completion not for a valid I/O anymore so just return */
2507         if (!io_req)
2508                 return;
2509
2510         fcport = io_req->fcport;
2511
2512         if (fcport == NULL) {
2513                 QEDF_ERR(&(qedf->dbg_ctx), "fcport is NULL.\n");
2514                 return;
2515         }
2516
2517         /*
2518          * Check that fcport is offloaded.  If it isn't then the spinlock
2519          * isn't valid and shouldn't be taken. We should just return.
2520          */
2521         if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
2522                 QEDF_ERR(&(qedf->dbg_ctx), "Session not offloaded yet.\n");
2523                 return;
2524         }
2525
2526
2527         switch (comp_type) {
2528         case FCOE_GOOD_COMPLETION_CQE_TYPE:
2529                 atomic_inc(&fcport->free_sqes);
2530                 switch (io_req->cmd_type) {
2531                 case QEDF_SCSI_CMD:
2532                         qedf_scsi_completion(qedf, cqe, io_req);
2533                         break;
2534                 case QEDF_ELS:
2535                         qedf_process_els_compl(qedf, cqe, io_req);
2536                         break;
2537                 case QEDF_TASK_MGMT_CMD:
2538                         qedf_process_tmf_compl(qedf, cqe, io_req);
2539                         break;
2540                 case QEDF_SEQ_CLEANUP:
2541                         qedf_process_seq_cleanup_compl(qedf, cqe, io_req);
2542                         break;
2543                 }
2544                 break;
2545         case FCOE_ERROR_DETECTION_CQE_TYPE:
2546                 atomic_inc(&fcport->free_sqes);
2547                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2548                     "Error detect CQE.\n");
2549                 qedf_process_error_detect(qedf, cqe, io_req);
2550                 break;
2551         case FCOE_EXCH_CLEANUP_CQE_TYPE:
2552                 atomic_inc(&fcport->free_sqes);
2553                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2554                     "Cleanup CQE.\n");
2555                 qedf_process_cleanup_compl(qedf, cqe, io_req);
2556                 break;
2557         case FCOE_ABTS_CQE_TYPE:
2558                 atomic_inc(&fcport->free_sqes);
2559                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2560                     "Abort CQE.\n");
2561                 qedf_process_abts_compl(qedf, cqe, io_req);
2562                 break;
2563         case FCOE_DUMMY_CQE_TYPE:
2564                 atomic_inc(&fcport->free_sqes);
2565                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2566                     "Dummy CQE.\n");
2567                 break;
2568         case FCOE_LOCAL_COMP_CQE_TYPE:
2569                 atomic_inc(&fcport->free_sqes);
2570                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2571                     "Local completion CQE.\n");
2572                 break;
2573         case FCOE_WARNING_CQE_TYPE:
2574                 atomic_inc(&fcport->free_sqes);
2575                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2576                     "Warning CQE.\n");
2577                 qedf_process_warning_compl(qedf, cqe, io_req);
2578                 break;
2579         case MAX_FCOE_CQE_TYPE:
2580                 atomic_inc(&fcport->free_sqes);
2581                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2582                     "Max FCoE CQE.\n");
2583                 break;
2584         default:
2585                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2586                     "Default CQE.\n");
2587                 break;
2588         }
2589 }
2590
2591 static void qedf_free_bdq(struct qedf_ctx *qedf)
2592 {
2593         int i;
2594
2595         if (qedf->bdq_pbl_list)
2596                 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE,
2597                     qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma);
2598
2599         if (qedf->bdq_pbl)
2600                 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size,
2601                     qedf->bdq_pbl, qedf->bdq_pbl_dma);
2602
2603         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2604                 if (qedf->bdq[i].buf_addr) {
2605                         dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE,
2606                             qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma);
2607                 }
2608         }
2609 }
2610
2611 static void qedf_free_global_queues(struct qedf_ctx *qedf)
2612 {
2613         int i;
2614         struct global_queue **gl = qedf->global_queues;
2615
2616         for (i = 0; i < qedf->num_queues; i++) {
2617                 if (!gl[i])
2618                         continue;
2619
2620                 if (gl[i]->cq)
2621                         dma_free_coherent(&qedf->pdev->dev,
2622                             gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma);
2623                 if (gl[i]->cq_pbl)
2624                         dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size,
2625                             gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
2626
2627                 kfree(gl[i]);
2628         }
2629
2630         qedf_free_bdq(qedf);
2631 }
2632
2633 static int qedf_alloc_bdq(struct qedf_ctx *qedf)
2634 {
2635         int i;
2636         struct scsi_bd *pbl;
2637         u64 *list;
2638         dma_addr_t page;
2639
2640         /* Alloc dma memory for BDQ buffers */
2641         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2642                 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev,
2643                     QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL);
2644                 if (!qedf->bdq[i].buf_addr) {
2645                         QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ "
2646                             "buffer %d.\n", i);
2647                         return -ENOMEM;
2648                 }
2649         }
2650
2651         /* Alloc dma memory for BDQ page buffer list */
2652         qedf->bdq_pbl_mem_size =
2653             QEDF_BDQ_SIZE * sizeof(struct scsi_bd);
2654         qedf->bdq_pbl_mem_size =
2655             ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE);
2656
2657         qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
2658             qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL);
2659         if (!qedf->bdq_pbl) {
2660                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n");
2661                 return -ENOMEM;
2662         }
2663
2664         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2665                   "BDQ PBL addr=0x%p dma=%pad\n",
2666                   qedf->bdq_pbl, &qedf->bdq_pbl_dma);
2667
2668         /*
2669          * Populate BDQ PBL with physical and virtual address of individual
2670          * BDQ buffers
2671          */
2672         pbl = (struct scsi_bd *)qedf->bdq_pbl;
2673         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2674                 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma));
2675                 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma));
2676                 pbl->opaque.fcoe_opaque.hi = 0;
2677                 /* Opaque lo data is an index into the BDQ array */
2678                 pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i);
2679                 pbl++;
2680         }
2681
2682         /* Allocate list of PBL pages */
2683         qedf->bdq_pbl_list = dma_zalloc_coherent(&qedf->pdev->dev,
2684             QEDF_PAGE_SIZE, &qedf->bdq_pbl_list_dma, GFP_KERNEL);
2685         if (!qedf->bdq_pbl_list) {
2686                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n");
2687                 return -ENOMEM;
2688         }
2689
2690         /*
2691          * Now populate PBL list with pages that contain pointers to the
2692          * individual buffers.
2693          */
2694         qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size /
2695             QEDF_PAGE_SIZE;
2696         list = (u64 *)qedf->bdq_pbl_list;
2697         page = qedf->bdq_pbl_list_dma;
2698         for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) {
2699                 *list = qedf->bdq_pbl_dma;
2700                 list++;
2701                 page += QEDF_PAGE_SIZE;
2702         }
2703
2704         return 0;
2705 }
2706
2707 static int qedf_alloc_global_queues(struct qedf_ctx *qedf)
2708 {
2709         u32 *list;
2710         int i;
2711         int status = 0, rc;
2712         u32 *pbl;
2713         dma_addr_t page;
2714         int num_pages;
2715
2716         /* Allocate and map CQs, RQs */
2717         /*
2718          * Number of global queues (CQ / RQ). This should
2719          * be <= number of available MSIX vectors for the PF
2720          */
2721         if (!qedf->num_queues) {
2722                 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n");
2723                 return 1;
2724         }
2725
2726         /*
2727          * Make sure we allocated the PBL that will contain the physical
2728          * addresses of our queues
2729          */
2730         if (!qedf->p_cpuq) {
2731                 status = 1;
2732                 goto mem_alloc_failure;
2733         }
2734
2735         qedf->global_queues = kzalloc((sizeof(struct global_queue *)
2736             * qedf->num_queues), GFP_KERNEL);
2737         if (!qedf->global_queues) {
2738                 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global "
2739                           "queues array ptr memory\n");
2740                 return -ENOMEM;
2741         }
2742         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2743                    "qedf->global_queues=%p.\n", qedf->global_queues);
2744
2745         /* Allocate DMA coherent buffers for BDQ */
2746         rc = qedf_alloc_bdq(qedf);
2747         if (rc)
2748                 goto mem_alloc_failure;
2749
2750         /* Allocate a CQ and an associated PBL for each MSI-X vector */
2751         for (i = 0; i < qedf->num_queues; i++) {
2752                 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue),
2753                     GFP_KERNEL);
2754                 if (!qedf->global_queues[i]) {
2755                         QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate "
2756                                    "global queue %d.\n", i);
2757                         status = -ENOMEM;
2758                         goto mem_alloc_failure;
2759                 }
2760
2761                 qedf->global_queues[i]->cq_mem_size =
2762                     FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
2763                 qedf->global_queues[i]->cq_mem_size =
2764                     ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE);
2765
2766                 qedf->global_queues[i]->cq_pbl_size =
2767                     (qedf->global_queues[i]->cq_mem_size /
2768                     PAGE_SIZE) * sizeof(void *);
2769                 qedf->global_queues[i]->cq_pbl_size =
2770                     ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE);
2771
2772                 qedf->global_queues[i]->cq =
2773                     dma_zalloc_coherent(&qedf->pdev->dev,
2774                         qedf->global_queues[i]->cq_mem_size,
2775                         &qedf->global_queues[i]->cq_dma, GFP_KERNEL);
2776
2777                 if (!qedf->global_queues[i]->cq) {
2778                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n");
2779                         status = -ENOMEM;
2780                         goto mem_alloc_failure;
2781                 }
2782
2783                 qedf->global_queues[i]->cq_pbl =
2784                     dma_zalloc_coherent(&qedf->pdev->dev,
2785                         qedf->global_queues[i]->cq_pbl_size,
2786                         &qedf->global_queues[i]->cq_pbl_dma, GFP_KERNEL);
2787
2788                 if (!qedf->global_queues[i]->cq_pbl) {
2789                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n");
2790                         status = -ENOMEM;
2791                         goto mem_alloc_failure;
2792                 }
2793
2794                 /* Create PBL */
2795                 num_pages = qedf->global_queues[i]->cq_mem_size /
2796                     QEDF_PAGE_SIZE;
2797                 page = qedf->global_queues[i]->cq_dma;
2798                 pbl = (u32 *)qedf->global_queues[i]->cq_pbl;
2799
2800                 while (num_pages--) {
2801                         *pbl = U64_LO(page);
2802                         pbl++;
2803                         *pbl = U64_HI(page);
2804                         pbl++;
2805                         page += QEDF_PAGE_SIZE;
2806                 }
2807                 /* Set the initial consumer index for cq */
2808                 qedf->global_queues[i]->cq_cons_idx = 0;
2809         }
2810
2811         list = (u32 *)qedf->p_cpuq;
2812
2813         /*
2814          * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
2815          * CQ#1 PBL pointer, RQ#1 PBL pointer, etc.  Each PBL pointer points
2816          * to the physical address which contains an array of pointers to
2817          * the physical addresses of the specific queue pages.
2818          */
2819         for (i = 0; i < qedf->num_queues; i++) {
2820                 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma);
2821                 list++;
2822                 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma);
2823                 list++;
2824                 *list = U64_LO(0);
2825                 list++;
2826                 *list = U64_HI(0);
2827                 list++;
2828         }
2829
2830         return 0;
2831
2832 mem_alloc_failure:
2833         qedf_free_global_queues(qedf);
2834         return status;
2835 }
2836
2837 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf)
2838 {
2839         u8 sq_num_pbl_pages;
2840         u32 sq_mem_size;
2841         u32 cq_mem_size;
2842         u32 cq_num_entries;
2843         int rval;
2844
2845         /*
2846          * The number of completion queues/fastpath interrupts/status blocks
2847          * we allocation is the minimum off:
2848          *
2849          * Number of CPUs
2850          * Number allocated by qed for our PCI function
2851          */
2852         qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf);
2853
2854         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n",
2855                    qedf->num_queues);
2856
2857         qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev,
2858             qedf->num_queues * sizeof(struct qedf_glbl_q_params),
2859             &qedf->hw_p_cpuq, GFP_KERNEL);
2860
2861         if (!qedf->p_cpuq) {
2862                 QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n");
2863                 return 1;
2864         }
2865
2866         rval = qedf_alloc_global_queues(qedf);
2867         if (rval) {
2868                 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation "
2869                           "failed.\n");
2870                 return 1;
2871         }
2872
2873         /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */
2874         sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
2875         sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE);
2876         sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE);
2877
2878         /* Calculate CQ num entries */
2879         cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
2880         cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE);
2881         cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe);
2882
2883         memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params));
2884
2885         /* Setup the value for fcoe PF */
2886         qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS;
2887         qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS;
2888         qedf->pf_params.fcoe_pf_params.glbl_q_params_addr =
2889             (u64)qedf->hw_p_cpuq;
2890         qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages;
2891
2892         qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0;
2893
2894         qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries;
2895         qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues;
2896
2897         /* log_page_size: 12 for 4KB pages */
2898         qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE);
2899
2900         qedf->pf_params.fcoe_pf_params.mtu = 9000;
2901         qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI;
2902         qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI;
2903
2904         /* BDQ address and size */
2905         qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] =
2906             qedf->bdq_pbl_list_dma;
2907         qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] =
2908             qedf->bdq_pbl_list_num_entries;
2909         qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE;
2910
2911         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2912             "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n",
2913             qedf->bdq_pbl_list,
2914             qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0],
2915             qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]);
2916
2917         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2918             "cq_num_entries=%d.\n",
2919             qedf->pf_params.fcoe_pf_params.cq_num_entries);
2920
2921         return 0;
2922 }
2923
2924 /* Free DMA coherent memory for array of queue pointers we pass to qed */
2925 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf)
2926 {
2927         size_t size = 0;
2928
2929         if (qedf->p_cpuq) {
2930                 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params);
2931                 dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq,
2932                     qedf->hw_p_cpuq);
2933         }
2934
2935         qedf_free_global_queues(qedf);
2936
2937         kfree(qedf->global_queues);
2938 }
2939
2940 /*
2941  * PCI driver functions
2942  */
2943
2944 static const struct pci_device_id qedf_pci_tbl[] = {
2945         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) },
2946         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) },
2947         {0}
2948 };
2949 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl);
2950
2951 static struct pci_driver qedf_pci_driver = {
2952         .name = QEDF_MODULE_NAME,
2953         .id_table = qedf_pci_tbl,
2954         .probe = qedf_probe,
2955         .remove = qedf_remove,
2956 };
2957
2958 static int __qedf_probe(struct pci_dev *pdev, int mode)
2959 {
2960         int rc = -EINVAL;
2961         struct fc_lport *lport;
2962         struct qedf_ctx *qedf;
2963         struct Scsi_Host *host;
2964         bool is_vf = false;
2965         struct qed_ll2_params params;
2966         char host_buf[20];
2967         struct qed_link_params link_params;
2968         int status;
2969         void *task_start, *task_end;
2970         struct qed_slowpath_params slowpath_params;
2971         struct qed_probe_params qed_params;
2972         u16 tmp;
2973
2974         /*
2975          * When doing error recovery we didn't reap the lport so don't try
2976          * to reallocate it.
2977          */
2978         if (mode != QEDF_MODE_RECOVERY) {
2979                 lport = libfc_host_alloc(&qedf_host_template,
2980                     sizeof(struct qedf_ctx));
2981
2982                 if (!lport) {
2983                         QEDF_ERR(NULL, "Could not allocate lport.\n");
2984                         rc = -ENOMEM;
2985                         goto err0;
2986                 }
2987
2988                 /* Initialize qedf_ctx */
2989                 qedf = lport_priv(lport);
2990                 qedf->lport = lport;
2991                 qedf->ctlr.lp = lport;
2992                 qedf->pdev = pdev;
2993                 qedf->dbg_ctx.pdev = pdev;
2994                 qedf->dbg_ctx.host_no = lport->host->host_no;
2995                 spin_lock_init(&qedf->hba_lock);
2996                 INIT_LIST_HEAD(&qedf->fcports);
2997                 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1;
2998                 atomic_set(&qedf->num_offloads, 0);
2999                 qedf->stop_io_on_error = false;
3000                 pci_set_drvdata(pdev, qedf);
3001                 init_completion(&qedf->fipvlan_compl);
3002                 mutex_init(&qedf->stats_mutex);
3003
3004                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO,
3005                    "QLogic FastLinQ FCoE Module qedf %s, "
3006                    "FW %d.%d.%d.%d\n", QEDF_VERSION,
3007                    FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
3008                    FW_ENGINEERING_VERSION);
3009         } else {
3010                 /* Init pointers during recovery */
3011                 qedf = pci_get_drvdata(pdev);
3012                 lport = qedf->lport;
3013         }
3014
3015         host = lport->host;
3016
3017         /* Allocate mempool for qedf_io_work structs */
3018         qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN,
3019             qedf_io_work_cache);
3020         if (qedf->io_mempool == NULL) {
3021                 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n");
3022                 goto err1;
3023         }
3024         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n",
3025             qedf->io_mempool);
3026
3027         sprintf(host_buf, "qedf_%u_link",
3028             qedf->lport->host->host_no);
3029         qedf->link_update_wq = create_workqueue(host_buf);
3030         INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update);
3031         INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery);
3032         INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump);
3033         qedf->fipvlan_retries = qedf_fipvlan_retries;
3034         /* Set a default prio in case DCBX doesn't converge */
3035         if (qedf_default_prio > -1) {
3036                 /*
3037                  * This is the case where we pass a modparam in so we want to
3038                  * honor it even if dcbx doesn't converge.
3039                  */
3040                 qedf->prio = qedf_default_prio;
3041         } else
3042                 qedf->prio = QEDF_DEFAULT_PRIO;
3043
3044         /*
3045          * Common probe. Takes care of basic hardware init and pci_*
3046          * functions.
3047          */
3048         memset(&qed_params, 0, sizeof(qed_params));
3049         qed_params.protocol = QED_PROTOCOL_FCOE;
3050         qed_params.dp_module = qedf_dp_module;
3051         qed_params.dp_level = qedf_dp_level;
3052         qed_params.is_vf = is_vf;
3053         qedf->cdev = qed_ops->common->probe(pdev, &qed_params);
3054         if (!qedf->cdev) {
3055                 rc = -ENODEV;
3056                 goto err1;
3057         }
3058
3059         /* Learn information crucial for qedf to progress */
3060         rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
3061         if (rc) {
3062                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n");
3063                 goto err1;
3064         }
3065
3066         /* queue allocation code should come here
3067          * order should be
3068          *      slowpath_start
3069          *      status block allocation
3070          *      interrupt registration (to get min number of queues)
3071          *      set_fcoe_pf_param
3072          *      qed_sp_fcoe_func_start
3073          */
3074         rc = qedf_set_fcoe_pf_param(qedf);
3075         if (rc) {
3076                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n");
3077                 goto err2;
3078         }
3079         qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3080
3081         /* Record BDQ producer doorbell addresses */
3082         qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr;
3083         qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr;
3084         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3085             "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod,
3086             qedf->bdq_secondary_prod);
3087
3088         qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf);
3089
3090         rc = qedf_prepare_sb(qedf);
3091         if (rc) {
3092
3093                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3094                 goto err2;
3095         }
3096
3097         /* Start the Slowpath-process */
3098         slowpath_params.int_mode = QED_INT_MODE_MSIX;
3099         slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER;
3100         slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER;
3101         slowpath_params.drv_rev = QEDF_DRIVER_REV_VER;
3102         slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER;
3103         strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE);
3104         rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params);
3105         if (rc) {
3106                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3107                 goto err2;
3108         }
3109
3110         /*
3111          * update_pf_params needs to be called before and after slowpath
3112          * start
3113          */
3114         qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3115
3116         /* Setup interrupts */
3117         rc = qedf_setup_int(qedf);
3118         if (rc)
3119                 goto err3;
3120
3121         rc = qed_ops->start(qedf->cdev, &qedf->tasks);
3122         if (rc) {
3123                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n");
3124                 goto err4;
3125         }
3126         task_start = qedf_get_task_mem(&qedf->tasks, 0);
3127         task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1);
3128         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, "
3129                    "end=%p block_size=%u.\n", task_start, task_end,
3130                    qedf->tasks.size);
3131
3132         /*
3133          * We need to write the number of BDs in the BDQ we've preallocated so
3134          * the f/w will do a prefetch and we'll get an unsolicited CQE when a
3135          * packet arrives.
3136          */
3137         qedf->bdq_prod_idx = QEDF_BDQ_SIZE;
3138         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3139             "Writing %d to primary and secondary BDQ doorbell registers.\n",
3140             qedf->bdq_prod_idx);
3141         writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod);
3142         tmp = readw(qedf->bdq_primary_prod);
3143         writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod);
3144         tmp = readw(qedf->bdq_secondary_prod);
3145
3146         qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3147
3148         /* Now that the dev_info struct has been filled in set the MAC
3149          * address
3150          */
3151         ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac);
3152         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n",
3153                    qedf->mac);
3154
3155         /*
3156          * Set the WWNN and WWPN in the following way:
3157          *
3158          * If the info we get from qed is non-zero then use that to set the
3159          * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based
3160          * on the MAC address.
3161          */
3162         if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) {
3163                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3164                     "Setting WWPN and WWNN from qed dev_info.\n");
3165                 qedf->wwnn = qedf->dev_info.wwnn;
3166                 qedf->wwpn = qedf->dev_info.wwpn;
3167         } else {
3168                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3169                     "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n");
3170                 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0);
3171                 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0);
3172         }
3173         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,  "WWNN=%016llx "
3174                    "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn);
3175
3176         sprintf(host_buf, "host_%d", host->host_no);
3177         qed_ops->common->set_name(qedf->cdev, host_buf);
3178
3179
3180         /* Set xid max values */
3181         qedf->max_scsi_xid = QEDF_MAX_SCSI_XID;
3182         qedf->max_els_xid = QEDF_MAX_ELS_XID;
3183
3184         /* Allocate cmd mgr */
3185         qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf);
3186         if (!qedf->cmd_mgr) {
3187                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n");
3188                 rc = -ENOMEM;
3189                 goto err5;
3190         }
3191
3192         if (mode != QEDF_MODE_RECOVERY) {
3193                 host->transportt = qedf_fc_transport_template;
3194                 host->can_queue = QEDF_MAX_ELS_XID;
3195                 host->max_lun = qedf_max_lun;
3196                 host->max_cmd_len = QEDF_MAX_CDB_LEN;
3197                 rc = scsi_add_host(host, &pdev->dev);
3198                 if (rc)
3199                         goto err6;
3200         }
3201
3202         memset(&params, 0, sizeof(params));
3203         params.mtu = 9000;
3204         ether_addr_copy(params.ll2_mac_address, qedf->mac);
3205
3206         /* Start LL2 processing thread */
3207         snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no);
3208         qedf->ll2_recv_wq =
3209                 create_workqueue(host_buf);
3210         if (!qedf->ll2_recv_wq) {
3211                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n");
3212                 rc = -ENOMEM;
3213                 goto err7;
3214         }
3215
3216 #ifdef CONFIG_DEBUG_FS
3217         qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops,
3218                             qedf_dbg_fops);
3219 #endif
3220
3221         /* Start LL2 */
3222         qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf);
3223         rc = qed_ops->ll2->start(qedf->cdev, &params);
3224         if (rc) {
3225                 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n");
3226                 goto err7;
3227         }
3228         set_bit(QEDF_LL2_STARTED, &qedf->flags);
3229
3230         /* Set initial FIP/FCoE VLAN to NULL */
3231         qedf->vlan_id = 0;
3232
3233         /*
3234          * No need to setup fcoe_ctlr or fc_lport objects during recovery since
3235          * they were not reaped during the unload process.
3236          */
3237         if (mode != QEDF_MODE_RECOVERY) {
3238                 /* Setup imbedded fcoe controller */
3239                 qedf_fcoe_ctlr_setup(qedf);
3240
3241                 /* Setup lport */
3242                 rc = qedf_lport_setup(qedf);
3243                 if (rc) {
3244                         QEDF_ERR(&(qedf->dbg_ctx),
3245                             "qedf_lport_setup failed.\n");
3246                         goto err7;
3247                 }
3248         }
3249
3250         sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no);
3251         qedf->timer_work_queue =
3252                 create_workqueue(host_buf);
3253         if (!qedf->timer_work_queue) {
3254                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer "
3255                           "workqueue.\n");
3256                 rc = -ENOMEM;
3257                 goto err7;
3258         }
3259
3260         /* DPC workqueue is not reaped during recovery unload */
3261         if (mode != QEDF_MODE_RECOVERY) {
3262                 sprintf(host_buf, "qedf_%u_dpc",
3263                     qedf->lport->host->host_no);
3264                 qedf->dpc_wq = create_workqueue(host_buf);
3265         }
3266
3267         /*
3268          * GRC dump and sysfs parameters are not reaped during the recovery
3269          * unload process.
3270          */
3271         if (mode != QEDF_MODE_RECOVERY) {
3272                 qedf->grcdump_size =
3273                     qed_ops->common->dbg_all_data_size(qedf->cdev);
3274                 if (qedf->grcdump_size) {
3275                         rc = qedf_alloc_grc_dump_buf(&qedf->grcdump,
3276                             qedf->grcdump_size);
3277                         if (rc) {
3278                                 QEDF_ERR(&(qedf->dbg_ctx),
3279                                     "GRC Dump buffer alloc failed.\n");
3280                                 qedf->grcdump = NULL;
3281                         }
3282
3283                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3284                             "grcdump: addr=%p, size=%u.\n",
3285                             qedf->grcdump, qedf->grcdump_size);
3286                 }
3287                 qedf_create_sysfs_ctx_attr(qedf);
3288
3289                 /* Initialize I/O tracing for this adapter */
3290                 spin_lock_init(&qedf->io_trace_lock);
3291                 qedf->io_trace_idx = 0;
3292         }
3293
3294         init_completion(&qedf->flogi_compl);
3295
3296         status = qed_ops->common->update_drv_state(qedf->cdev, true);
3297         if (status)
3298                 QEDF_ERR(&(qedf->dbg_ctx),
3299                         "Failed to send drv state to MFW.\n");
3300
3301         memset(&link_params, 0, sizeof(struct qed_link_params));
3302         link_params.link_up = true;
3303         status = qed_ops->common->set_link(qedf->cdev, &link_params);
3304         if (status)
3305                 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n");
3306
3307         /* Start/restart discovery */
3308         if (mode == QEDF_MODE_RECOVERY)
3309                 fcoe_ctlr_link_up(&qedf->ctlr);
3310         else
3311                 fc_fabric_login(lport);
3312
3313         /* All good */
3314         return 0;
3315
3316 err7:
3317         if (qedf->ll2_recv_wq)
3318                 destroy_workqueue(qedf->ll2_recv_wq);
3319         fc_remove_host(qedf->lport->host);
3320         scsi_remove_host(qedf->lport->host);
3321 #ifdef CONFIG_DEBUG_FS
3322         qedf_dbg_host_exit(&(qedf->dbg_ctx));
3323 #endif
3324 err6:
3325         qedf_cmd_mgr_free(qedf->cmd_mgr);
3326 err5:
3327         qed_ops->stop(qedf->cdev);
3328 err4:
3329         qedf_free_fcoe_pf_param(qedf);
3330         qedf_sync_free_irqs(qedf);
3331 err3:
3332         qed_ops->common->slowpath_stop(qedf->cdev);
3333 err2:
3334         qed_ops->common->remove(qedf->cdev);
3335 err1:
3336         scsi_host_put(lport->host);
3337 err0:
3338         return rc;
3339 }
3340
3341 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
3342 {
3343         return __qedf_probe(pdev, QEDF_MODE_NORMAL);
3344 }
3345
3346 static void __qedf_remove(struct pci_dev *pdev, int mode)
3347 {
3348         struct qedf_ctx *qedf;
3349         int rc;
3350
3351         if (!pdev) {
3352                 QEDF_ERR(NULL, "pdev is NULL.\n");
3353                 return;
3354         }
3355
3356         qedf = pci_get_drvdata(pdev);
3357
3358         /*
3359          * Prevent race where we're in board disable work and then try to
3360          * rmmod the module.
3361          */
3362         if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
3363                 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n");
3364                 return;
3365         }
3366
3367         if (mode != QEDF_MODE_RECOVERY)
3368                 set_bit(QEDF_UNLOADING, &qedf->flags);
3369
3370         /* Logoff the fabric to upload all connections */
3371         if (mode == QEDF_MODE_RECOVERY)
3372                 fcoe_ctlr_link_down(&qedf->ctlr);
3373         else
3374                 fc_fabric_logoff(qedf->lport);
3375         qedf_wait_for_upload(qedf);
3376
3377 #ifdef CONFIG_DEBUG_FS
3378         qedf_dbg_host_exit(&(qedf->dbg_ctx));
3379 #endif
3380
3381         /* Stop any link update handling */
3382         cancel_delayed_work_sync(&qedf->link_update);
3383         destroy_workqueue(qedf->link_update_wq);
3384         qedf->link_update_wq = NULL;
3385
3386         if (qedf->timer_work_queue)
3387                 destroy_workqueue(qedf->timer_work_queue);
3388
3389         /* Stop Light L2 */
3390         clear_bit(QEDF_LL2_STARTED, &qedf->flags);
3391         qed_ops->ll2->stop(qedf->cdev);
3392         if (qedf->ll2_recv_wq)
3393                 destroy_workqueue(qedf->ll2_recv_wq);
3394
3395         /* Stop fastpath */
3396         qedf_sync_free_irqs(qedf);
3397         qedf_destroy_sb(qedf);
3398
3399         /*
3400          * During recovery don't destroy OS constructs that represent the
3401          * physical port.
3402          */
3403         if (mode != QEDF_MODE_RECOVERY) {
3404                 qedf_free_grc_dump_buf(&qedf->grcdump);
3405                 qedf_remove_sysfs_ctx_attr(qedf);
3406
3407                 /* Remove all SCSI/libfc/libfcoe structures */
3408                 fcoe_ctlr_destroy(&qedf->ctlr);
3409                 fc_lport_destroy(qedf->lport);
3410                 fc_remove_host(qedf->lport->host);
3411                 scsi_remove_host(qedf->lport->host);
3412         }
3413
3414         qedf_cmd_mgr_free(qedf->cmd_mgr);
3415
3416         if (mode != QEDF_MODE_RECOVERY) {
3417                 fc_exch_mgr_free(qedf->lport);
3418                 fc_lport_free_stats(qedf->lport);
3419
3420                 /* Wait for all vports to be reaped */
3421                 qedf_wait_for_vport_destroy(qedf);
3422         }
3423
3424         /*
3425          * Now that all connections have been uploaded we can stop the
3426          * rest of the qed operations
3427          */
3428         qed_ops->stop(qedf->cdev);
3429
3430         if (mode != QEDF_MODE_RECOVERY) {
3431                 if (qedf->dpc_wq) {
3432                         /* Stop general DPC handling */
3433                         destroy_workqueue(qedf->dpc_wq);
3434                         qedf->dpc_wq = NULL;
3435                 }
3436         }
3437
3438         /* Final shutdown for the board */
3439         qedf_free_fcoe_pf_param(qedf);
3440         if (mode != QEDF_MODE_RECOVERY) {
3441                 qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3442                 pci_set_drvdata(pdev, NULL);
3443         }
3444
3445         rc = qed_ops->common->update_drv_state(qedf->cdev, false);
3446         if (rc)
3447                 QEDF_ERR(&(qedf->dbg_ctx),
3448                         "Failed to send drv state to MFW.\n");
3449
3450         qed_ops->common->slowpath_stop(qedf->cdev);
3451         qed_ops->common->remove(qedf->cdev);
3452
3453         mempool_destroy(qedf->io_mempool);
3454
3455         /* Only reap the Scsi_host on a real removal */
3456         if (mode != QEDF_MODE_RECOVERY)
3457                 scsi_host_put(qedf->lport->host);
3458 }
3459
3460 static void qedf_remove(struct pci_dev *pdev)
3461 {
3462         /* Check to make sure this function wasn't already disabled */
3463         if (!atomic_read(&pdev->enable_cnt))
3464                 return;
3465
3466         __qedf_remove(pdev, QEDF_MODE_NORMAL);
3467 }
3468
3469 void qedf_wq_grcdump(struct work_struct *work)
3470 {
3471         struct qedf_ctx *qedf =
3472             container_of(work, struct qedf_ctx, grcdump_work.work);
3473
3474         QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n");
3475         qedf_capture_grc_dump(qedf);
3476 }
3477
3478 /*
3479  * Protocol TLV handler
3480  */
3481 void qedf_get_protocol_tlv_data(void *dev, void *data)
3482 {
3483         struct qedf_ctx *qedf = dev;
3484         struct qed_mfw_tlv_fcoe *fcoe = data;
3485         struct fc_lport *lport = qedf->lport;
3486         struct Scsi_Host *host = lport->host;
3487         struct fc_host_attrs *fc_host = shost_to_fc_host(host);
3488         struct fc_host_statistics *hst;
3489
3490         /* Force a refresh of the fc_host stats including offload stats */
3491         hst = qedf_fc_get_host_stats(host);
3492
3493         fcoe->qos_pri_set = true;
3494         fcoe->qos_pri = 3; /* Hard coded to 3 in driver */
3495
3496         fcoe->ra_tov_set = true;
3497         fcoe->ra_tov = lport->r_a_tov;
3498
3499         fcoe->ed_tov_set = true;
3500         fcoe->ed_tov = lport->e_d_tov;
3501
3502         fcoe->npiv_state_set = true;
3503         fcoe->npiv_state = 1; /* NPIV always enabled */
3504
3505         fcoe->num_npiv_ids_set = true;
3506         fcoe->num_npiv_ids = fc_host->npiv_vports_inuse;
3507
3508         /* Certain attributes we only want to set if we've selected an FCF */
3509         if (qedf->ctlr.sel_fcf) {
3510                 fcoe->switch_name_set = true;
3511                 u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name);
3512         }
3513
3514         fcoe->port_state_set = true;
3515         /* For qedf we're either link down or fabric attach */
3516         if (lport->link_up)
3517                 fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC;
3518         else
3519                 fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE;
3520
3521         fcoe->link_failures_set = true;
3522         fcoe->link_failures = (u16)hst->link_failure_count;
3523
3524         fcoe->fcoe_txq_depth_set = true;
3525         fcoe->fcoe_rxq_depth_set = true;
3526         fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS;
3527         fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS;
3528
3529         fcoe->fcoe_rx_frames_set = true;
3530         fcoe->fcoe_rx_frames = hst->rx_frames;
3531
3532         fcoe->fcoe_tx_frames_set = true;
3533         fcoe->fcoe_tx_frames = hst->tx_frames;
3534
3535         fcoe->fcoe_rx_bytes_set = true;
3536         fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000;
3537
3538         fcoe->fcoe_tx_bytes_set = true;
3539         fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000;
3540
3541         fcoe->crc_count_set = true;
3542         fcoe->crc_count = hst->invalid_crc_count;
3543
3544         fcoe->tx_abts_set = true;
3545         fcoe->tx_abts = hst->fcp_packet_aborts;
3546
3547         fcoe->tx_lun_rst_set = true;
3548         fcoe->tx_lun_rst = qedf->lun_resets;
3549
3550         fcoe->abort_task_sets_set = true;
3551         fcoe->abort_task_sets = qedf->packet_aborts;
3552
3553         fcoe->scsi_busy_set = true;
3554         fcoe->scsi_busy = qedf->busy;
3555
3556         fcoe->scsi_tsk_full_set = true;
3557         fcoe->scsi_tsk_full = qedf->task_set_fulls;
3558 }
3559
3560 /* Generic TLV data callback */
3561 void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
3562 {
3563         struct qedf_ctx *qedf;
3564
3565         if (!dev) {
3566                 QEDF_INFO(NULL, QEDF_LOG_EVT,
3567                           "dev is NULL so ignoring get_generic_tlv_data request.\n");
3568                 return;
3569         }
3570         qedf = (struct qedf_ctx *)dev;
3571
3572         memset(data, 0, sizeof(struct qed_generic_tlvs));
3573         ether_addr_copy(data->mac[0], qedf->mac);
3574 }
3575
3576 /*
3577  * Module Init/Remove
3578  */
3579
3580 static int __init qedf_init(void)
3581 {
3582         int ret;
3583
3584         /* If debug=1 passed, set the default log mask */
3585         if (qedf_debug == QEDF_LOG_DEFAULT)
3586                 qedf_debug = QEDF_DEFAULT_LOG_MASK;
3587
3588         /*
3589          * Check that default prio for FIP/FCoE traffic is between 0..7 if a
3590          * value has been set
3591          */
3592         if (qedf_default_prio > -1)
3593                 if (qedf_default_prio > 7) {
3594                         qedf_default_prio = QEDF_DEFAULT_PRIO;
3595                         QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n",
3596                             QEDF_DEFAULT_PRIO);
3597                 }
3598
3599         /* Print driver banner */
3600         QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR,
3601                    QEDF_VERSION);
3602
3603         /* Create kmem_cache for qedf_io_work structs */
3604         qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache",
3605             sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL);
3606         if (qedf_io_work_cache == NULL) {
3607                 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n");
3608                 goto err1;
3609         }
3610         QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n",
3611             qedf_io_work_cache);
3612
3613         qed_ops = qed_get_fcoe_ops();
3614         if (!qed_ops) {
3615                 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n");
3616                 goto err1;
3617         }
3618
3619 #ifdef CONFIG_DEBUG_FS
3620         qedf_dbg_init("qedf");
3621 #endif
3622
3623         qedf_fc_transport_template =
3624             fc_attach_transport(&qedf_fc_transport_fn);
3625         if (!qedf_fc_transport_template) {
3626                 QEDF_ERR(NULL, "Could not register with FC transport\n");
3627                 goto err2;
3628         }
3629
3630         qedf_fc_vport_transport_template =
3631                 fc_attach_transport(&qedf_fc_vport_transport_fn);
3632         if (!qedf_fc_vport_transport_template) {
3633                 QEDF_ERR(NULL, "Could not register vport template with FC "
3634                           "transport\n");
3635                 goto err3;
3636         }
3637
3638         qedf_io_wq = create_workqueue("qedf_io_wq");
3639         if (!qedf_io_wq) {
3640                 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n");
3641                 goto err4;
3642         }
3643
3644         qedf_cb_ops.get_login_failures = qedf_get_login_failures;
3645
3646         ret = pci_register_driver(&qedf_pci_driver);
3647         if (ret) {
3648                 QEDF_ERR(NULL, "Failed to register driver\n");
3649                 goto err5;
3650         }
3651
3652         return 0;
3653
3654 err5:
3655         destroy_workqueue(qedf_io_wq);
3656 err4:
3657         fc_release_transport(qedf_fc_vport_transport_template);
3658 err3:
3659         fc_release_transport(qedf_fc_transport_template);
3660 err2:
3661 #ifdef CONFIG_DEBUG_FS
3662         qedf_dbg_exit();
3663 #endif
3664         qed_put_fcoe_ops();
3665 err1:
3666         return -EINVAL;
3667 }
3668
3669 static void __exit qedf_cleanup(void)
3670 {
3671         pci_unregister_driver(&qedf_pci_driver);
3672
3673         destroy_workqueue(qedf_io_wq);
3674
3675         fc_release_transport(qedf_fc_vport_transport_template);
3676         fc_release_transport(qedf_fc_transport_template);
3677 #ifdef CONFIG_DEBUG_FS
3678         qedf_dbg_exit();
3679 #endif
3680         qed_put_fcoe_ops();
3681
3682         kmem_cache_destroy(qedf_io_work_cache);
3683 }
3684
3685 MODULE_LICENSE("GPL");
3686 MODULE_DESCRIPTION("QLogic QEDF 25/40/50/100Gb FCoE Driver");
3687 MODULE_AUTHOR("QLogic Corporation");
3688 MODULE_VERSION(QEDF_VERSION);
3689 module_init(qedf_init);
3690 module_exit(qedf_cleanup);