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         .use_clustering = ENABLE_CLUSTERING,
 789         .max_sectors    = 0xffff,
 790         .queuecommand   = qedf_queuecommand,
 791         .shost_attrs    = qedf_host_attrs,
 792         .eh_abort_handler       = qedf_eh_abort,
 793         .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */
 794         .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */
 795         .eh_host_reset_handler  = qedf_eh_host_reset,
 796         .slave_configure        = qedf_slave_configure,
 797         .dma_boundary = QED_HW_DMA_BOUNDARY,
 798         .sg_tablesize = QEDF_MAX_BDS_PER_CMD,
 799         .can_queue = FCOE_PARAMS_NUM_TASKS,
 800         .change_queue_depth = scsi_change_queue_depth,
 801 };
 802
 803 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen)
 804 {
 805         int rc;
 806
 807         spin_lock(&qedf_global_lock);
 808         rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global);
 809         spin_unlock(&qedf_global_lock);
 810
 811         return rc;
 812 }
 813
 814 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id)
 815 {
 816         struct qedf_rport *fcport;
 817         struct fc_rport_priv *rdata;
 818
 819         rcu_read_lock();
 820         list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
 821                 rdata = fcport->rdata;
 822                 if (rdata == NULL)
 823                         continue;
 824                 if (rdata->ids.port_id == port_id) {
 825                         rcu_read_unlock();
 826                         return fcport;
 827                 }
 828         }
 829         rcu_read_unlock();
 830
 831         /* Return NULL to caller to let them know fcport was not found */
 832         return NULL;
 833 }
 834
 835 /* Transmits an ELS frame over an offloaded session */
 836 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp)
 837 {
 838         struct fc_frame_header *fh;
 839         int rc = 0;
 840
 841         fh = fc_frame_header_get(fp);
 842         if ((fh->fh_type == FC_TYPE_ELS) &&
 843             (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
 844                 switch (fc_frame_payload_op(fp)) {
 845                 case ELS_ADISC:
 846                         qedf_send_adisc(fcport, fp);
 847                         rc = 1;
 848                         break;
 849                 }
 850         }
 851
 852         return rc;
 853 }
 854
 855 /**
 856  * qedf_xmit - qedf FCoE frame transmit function
 857  *
 858  */
 859 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp)
 860 {
 861         struct fc_lport         *base_lport;
 862         struct qedf_ctx         *qedf;
 863         struct ethhdr           *eh;
 864         struct fcoe_crc_eof     *cp;
 865         struct sk_buff          *skb;
 866         struct fc_frame_header  *fh;
 867         struct fcoe_hdr         *hp;
 868         u8                      sof, eof;
 869         u32                     crc;
 870         unsigned int            hlen, tlen, elen;
 871         int                     wlen;
 872         struct fc_stats         *stats;
 873         struct fc_lport *tmp_lport;
 874         struct fc_lport *vn_port = NULL;
 875         struct qedf_rport *fcport;
 876         int rc;
 877         u16 vlan_tci = 0;
 878
 879         qedf = (struct qedf_ctx *)lport_priv(lport);
 880
 881         fh = fc_frame_header_get(fp);
 882         skb = fp_skb(fp);
 883
 884         /* Filter out traffic to other NPIV ports on the same host */
 885         if (lport->vport)
 886                 base_lport = shost_priv(vport_to_shost(lport->vport));
 887         else
 888                 base_lport = lport;
 889
 890         /* Flag if the destination is the base port */
 891         if (base_lport->port_id == ntoh24(fh->fh_d_id)) {
 892                 vn_port = base_lport;
 893         } else {
 894                 /* Got through the list of vports attached to the base_lport
 895                  * and see if we have a match with the destination address.
 896                  */
 897                 list_for_each_entry(tmp_lport, &base_lport->vports, list) {
 898                         if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) {
 899                                 vn_port = tmp_lport;
 900                                 break;
 901                         }
 902                 }
 903         }
 904         if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) {
 905                 struct fc_rport_priv *rdata = NULL;
 906
 907                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
 908                     "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id));
 909                 kfree_skb(skb);
 910                 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id));
 911                 if (rdata)
 912                         rdata->retries = lport->max_rport_retry_count;
 913                 return -EINVAL;
 914         }
 915         /* End NPIV filtering */
 916
 917         if (!qedf->ctlr.sel_fcf) {
 918                 kfree_skb(skb);
 919                 return 0;
 920         }
 921
 922         if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) {
 923                 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n");
 924                 kfree_skb(skb);
 925                 return 0;
 926         }
 927
 928         if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
 929                 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n");
 930                 kfree_skb(skb);
 931                 return 0;
 932         }
 933
 934         if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
 935                 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb))
 936                         return 0;
 937         }
 938
 939         /* Check to see if this needs to be sent on an offloaded session */
 940         fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
 941
 942         if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
 943                 rc = qedf_xmit_l2_frame(fcport, fp);
 944                 /*
 945                  * If the frame was successfully sent over the middle path
 946                  * then do not try to also send it over the LL2 path
 947                  */
 948                 if (rc)
 949                         return 0;
 950         }
 951
 952         sof = fr_sof(fp);
 953         eof = fr_eof(fp);
 954
 955         elen = sizeof(struct ethhdr);
 956         hlen = sizeof(struct fcoe_hdr);
 957         tlen = sizeof(struct fcoe_crc_eof);
 958         wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
 959
 960         skb->ip_summed = CHECKSUM_NONE;
 961         crc = fcoe_fc_crc(fp);
 962
 963         /* copy port crc and eof to the skb buff */
 964         if (skb_is_nonlinear(skb)) {
 965                 skb_frag_t *frag;
 966
 967                 if (qedf_get_paged_crc_eof(skb, tlen)) {
 968                         kfree_skb(skb);
 969                         return -ENOMEM;
 970                 }
 971                 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
 972                 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset;
 973         } else {
 974                 cp = skb_put(skb, tlen);
 975         }
 976
 977         memset(cp, 0, sizeof(*cp));
 978         cp->fcoe_eof = eof;
 979         cp->fcoe_crc32 = cpu_to_le32(~crc);
 980         if (skb_is_nonlinear(skb)) {
 981                 kunmap_atomic(cp);
 982                 cp = NULL;
 983         }
 984
 985
 986         /* adjust skb network/transport offsets to match mac/fcoe/port */
 987         skb_push(skb, elen + hlen);
 988         skb_reset_mac_header(skb);
 989         skb_reset_network_header(skb);
 990         skb->mac_len = elen;
 991         skb->protocol = htons(ETH_P_FCOE);
 992
 993         /*
 994          * Add VLAN tag to non-offload FCoE frame based on current stored VLAN
 995          * for FIP/FCoE traffic.
 996          */
 997         __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id);
 998
 999         /* fill up mac and fcoe headers */
1000         eh = eth_hdr(skb);
1001         eh->h_proto = htons(ETH_P_FCOE);
1002         if (qedf->ctlr.map_dest)
1003                 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
1004         else
1005                 /* insert GW address */
1006                 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr);
1007
1008         /* Set the source MAC address */
1009         ether_addr_copy(eh->h_source, qedf->data_src_addr);
1010
1011         hp = (struct fcoe_hdr *)(eh + 1);
1012         memset(hp, 0, sizeof(*hp));
1013         if (FC_FCOE_VER)
1014                 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
1015         hp->fcoe_sof = sof;
1016
1017         /*update tx stats */
1018         stats = per_cpu_ptr(lport->stats, get_cpu());
1019         stats->TxFrames++;
1020         stats->TxWords += wlen;
1021         put_cpu();
1022
1023         /* Get VLAN ID from skb for printing purposes */
1024         __vlan_hwaccel_get_tag(skb, &vlan_tci);
1025
1026         /* send down to lld */
1027         fr_dev(fp) = lport;
1028         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: "
1029             "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n",
1030             ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type,
1031             vlan_tci);
1032         if (qedf_dump_frames)
1033                 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
1034                     1, skb->data, skb->len, false);
1035         qed_ops->ll2->start_xmit(qedf->cdev, skb, 0);
1036
1037         return 0;
1038 }
1039
1040 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1041 {
1042         int rval = 0;
1043         u32 *pbl;
1044         dma_addr_t page;
1045         int num_pages;
1046
1047         /* Calculate appropriate queue and PBL sizes */
1048         fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
1049         fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE);
1050         fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) *
1051             sizeof(void *);
1052         fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE;
1053
1054         fcport->sq = dma_zalloc_coherent(&qedf->pdev->dev,
1055             fcport->sq_mem_size, &fcport->sq_dma, GFP_KERNEL);
1056         if (!fcport->sq) {
1057                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n");
1058                 rval = 1;
1059                 goto out;
1060         }
1061
1062         fcport->sq_pbl = dma_zalloc_coherent(&qedf->pdev->dev,
1063             fcport->sq_pbl_size, &fcport->sq_pbl_dma, GFP_KERNEL);
1064         if (!fcport->sq_pbl) {
1065                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n");
1066                 rval = 1;
1067                 goto out_free_sq;
1068         }
1069
1070         /* Create PBL */
1071         num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE;
1072         page = fcport->sq_dma;
1073         pbl = (u32 *)fcport->sq_pbl;
1074
1075         while (num_pages--) {
1076                 *pbl = U64_LO(page);
1077                 pbl++;
1078                 *pbl = U64_HI(page);
1079                 pbl++;
1080                 page += QEDF_PAGE_SIZE;
1081         }
1082
1083         return rval;
1084
1085 out_free_sq:
1086         dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq,
1087             fcport->sq_dma);
1088 out:
1089         return rval;
1090 }
1091
1092 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1093 {
1094         if (fcport->sq_pbl)
1095                 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size,
1096                     fcport->sq_pbl, fcport->sq_pbl_dma);
1097         if (fcport->sq)
1098                 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1099                     fcport->sq, fcport->sq_dma);
1100 }
1101
1102 static int qedf_offload_connection(struct qedf_ctx *qedf,
1103         struct qedf_rport *fcport)
1104 {
1105         struct qed_fcoe_params_offload conn_info;
1106         u32 port_id;
1107         int rval;
1108         uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe));
1109
1110         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection "
1111                    "portid=%06x.\n", fcport->rdata->ids.port_id);
1112         rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle,
1113             &fcport->fw_cid, &fcport->p_doorbell);
1114         if (rval) {
1115                 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection "
1116                            "for portid=%06x.\n", fcport->rdata->ids.port_id);
1117                 rval = 1; /* For some reason qed returns 0 on failure here */
1118                 goto out;
1119         }
1120
1121         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x "
1122                    "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id,
1123                    fcport->fw_cid, fcport->handle);
1124
1125         memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload));
1126
1127         /* Fill in the offload connection info */
1128         conn_info.sq_pbl_addr = fcport->sq_pbl_dma;
1129
1130         conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl);
1131         conn_info.sq_next_page_addr =
1132             (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8));
1133
1134         /* Need to use our FCoE MAC for the offload session */
1135         ether_addr_copy(conn_info.src_mac, qedf->data_src_addr);
1136
1137         ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr);
1138
1139         conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size;
1140         conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov / 20;
1141         conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */
1142         conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size;
1143
1144         /* Set VLAN data */
1145         conn_info.vlan_tag = qedf->vlan_id <<
1146             FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT;
1147         conn_info.vlan_tag |=
1148             qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT;
1149         conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK <<
1150             FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT);
1151
1152         /* Set host port source id */
1153         port_id = fc_host_port_id(qedf->lport->host);
1154         fcport->sid = port_id;
1155         conn_info.s_id.addr_hi = (port_id & 0x000000FF);
1156         conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1157         conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1158
1159         conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq;
1160
1161         /* Set remote port destination id */
1162         port_id = fcport->rdata->rport->port_id;
1163         conn_info.d_id.addr_hi = (port_id & 0x000000FF);
1164         conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1165         conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1166
1167         conn_info.def_q_idx = 0; /* Default index for send queue? */
1168
1169         /* Set FC-TAPE specific flags if needed */
1170         if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) {
1171                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN,
1172                     "Enable CONF, REC for portid=%06x.\n",
1173                     fcport->rdata->ids.port_id);
1174                 conn_info.flags |= 1 <<
1175                     FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT;
1176                 conn_info.flags |=
1177                     ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
1178                     FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT;
1179         }
1180
1181         rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info);
1182         if (rval) {
1183                 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection "
1184                            "for portid=%06x.\n", fcport->rdata->ids.port_id);
1185                 goto out_free_conn;
1186         } else
1187                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload "
1188                            "succeeded portid=%06x total_sqe=%d.\n",
1189                            fcport->rdata->ids.port_id, total_sqe);
1190
1191         spin_lock_init(&fcport->rport_lock);
1192         atomic_set(&fcport->free_sqes, total_sqe);
1193         return 0;
1194 out_free_conn:
1195         qed_ops->release_conn(qedf->cdev, fcport->handle);
1196 out:
1197         return rval;
1198 }
1199
1200 #define QEDF_TERM_BUFF_SIZE             10
1201 static void qedf_upload_connection(struct qedf_ctx *qedf,
1202         struct qedf_rport *fcport)
1203 {
1204         void *term_params;
1205         dma_addr_t term_params_dma;
1206
1207         /* Term params needs to be a DMA coherent buffer as qed shared the
1208          * physical DMA address with the firmware. The buffer may be used in
1209          * the receive path so we may eventually have to move this.
1210          */
1211         term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE,
1212                 &term_params_dma, GFP_KERNEL);
1213
1214         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection "
1215                    "port_id=%06x.\n", fcport->rdata->ids.port_id);
1216
1217         qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma);
1218         qed_ops->release_conn(qedf->cdev, fcport->handle);
1219
1220         dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params,
1221             term_params_dma);
1222 }
1223
1224 static void qedf_cleanup_fcport(struct qedf_ctx *qedf,
1225         struct qedf_rport *fcport)
1226 {
1227         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n",
1228             fcport->rdata->ids.port_id);
1229
1230         /* Flush any remaining i/o's before we upload the connection */
1231         qedf_flush_active_ios(fcport, -1);
1232
1233         if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags))
1234                 qedf_upload_connection(qedf, fcport);
1235         qedf_free_sq(qedf, fcport);
1236         fcport->rdata = NULL;
1237         fcport->qedf = NULL;
1238 }
1239
1240 /**
1241  * This event_callback is called after successful completion of libfc
1242  * initiated target login. qedf can proceed with initiating the session
1243  * establishment.
1244  */
1245 static void qedf_rport_event_handler(struct fc_lport *lport,
1246                                 struct fc_rport_priv *rdata,
1247                                 enum fc_rport_event event)
1248 {
1249         struct qedf_ctx *qedf = lport_priv(lport);
1250         struct fc_rport *rport = rdata->rport;
1251         struct fc_rport_libfc_priv *rp;
1252         struct qedf_rport *fcport;
1253         u32 port_id;
1254         int rval;
1255         unsigned long flags;
1256
1257         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, "
1258                    "port_id = 0x%x\n", event, rdata->ids.port_id);
1259
1260         switch (event) {
1261         case RPORT_EV_READY:
1262                 if (!rport) {
1263                         QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n");
1264                         break;
1265                 }
1266
1267                 rp = rport->dd_data;
1268                 fcport = (struct qedf_rport *)&rp[1];
1269                 fcport->qedf = qedf;
1270
1271                 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) {
1272                         QEDF_ERR(&(qedf->dbg_ctx), "Not offloading "
1273                             "portid=0x%x as max number of offloaded sessions "
1274                             "reached.\n", rdata->ids.port_id);
1275                         return;
1276                 }
1277
1278                 /*
1279                  * Don't try to offload the session again. Can happen when we
1280                  * get an ADISC
1281                  */
1282                 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1283                         QEDF_WARN(&(qedf->dbg_ctx), "Session already "
1284                                    "offloaded, portid=0x%x.\n",
1285                                    rdata->ids.port_id);
1286                         return;
1287                 }
1288
1289                 if (rport->port_id == FC_FID_DIR_SERV) {
1290                         /*
1291                          * qedf_rport structure doesn't exist for
1292                          * directory server.
1293                          * We should not come here, as lport will
1294                          * take care of fabric login
1295                          */
1296                         QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not "
1297                             "exist for dir server port_id=%x\n",
1298                             rdata->ids.port_id);
1299                         break;
1300                 }
1301
1302                 if (rdata->spp_type != FC_TYPE_FCP) {
1303                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1304                             "Not offloading since spp type isn't FCP\n");
1305                         break;
1306                 }
1307                 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
1308                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1309                             "Not FCP target so not offloading\n");
1310                         break;
1311                 }
1312
1313                 fcport->rdata = rdata;
1314                 fcport->rport = rport;
1315
1316                 rval = qedf_alloc_sq(qedf, fcport);
1317                 if (rval) {
1318                         qedf_cleanup_fcport(qedf, fcport);
1319                         break;
1320                 }
1321
1322                 /* Set device type */
1323                 if (rdata->flags & FC_RP_FLAGS_RETRY &&
1324                     rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET &&
1325                     !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) {
1326                         fcport->dev_type = QEDF_RPORT_TYPE_TAPE;
1327                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1328                             "portid=%06x is a TAPE device.\n",
1329                             rdata->ids.port_id);
1330                 } else {
1331                         fcport->dev_type = QEDF_RPORT_TYPE_DISK;
1332                 }
1333
1334                 rval = qedf_offload_connection(qedf, fcport);
1335                 if (rval) {
1336                         qedf_cleanup_fcport(qedf, fcport);
1337                         break;
1338                 }
1339
1340                 /* Add fcport to list of qedf_ctx list of offloaded ports */
1341                 spin_lock_irqsave(&qedf->hba_lock, flags);
1342                 list_add_rcu(&fcport->peers, &qedf->fcports);
1343                 spin_unlock_irqrestore(&qedf->hba_lock, flags);
1344
1345                 /*
1346                  * Set the session ready bit to let everyone know that this
1347                  * connection is ready for I/O
1348                  */
1349                 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags);
1350                 atomic_inc(&qedf->num_offloads);
1351
1352                 break;
1353         case RPORT_EV_LOGO:
1354         case RPORT_EV_FAILED:
1355         case RPORT_EV_STOP:
1356                 port_id = rdata->ids.port_id;
1357                 if (port_id == FC_FID_DIR_SERV)
1358                         break;
1359
1360                 if (!rport) {
1361                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1362                             "port_id=%x - rport notcreated Yet!!\n", port_id);
1363                         break;
1364                 }
1365                 rp = rport->dd_data;
1366                 /*
1367                  * Perform session upload. Note that rdata->peers is already
1368                  * removed from disc->rports list before we get this event.
1369                  */
1370                 fcport = (struct qedf_rport *)&rp[1];
1371
1372                 /* Only free this fcport if it is offloaded already */
1373                 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1374                         set_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags);
1375                         qedf_cleanup_fcport(qedf, fcport);
1376
1377                         /*
1378                          * Remove fcport to list of qedf_ctx list of offloaded
1379                          * ports
1380                          */
1381                         spin_lock_irqsave(&qedf->hba_lock, flags);
1382                         list_del_rcu(&fcport->peers);
1383                         spin_unlock_irqrestore(&qedf->hba_lock, flags);
1384
1385                         clear_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1386                             &fcport->flags);
1387                         atomic_dec(&qedf->num_offloads);
1388                 }
1389
1390                 break;
1391
1392         case RPORT_EV_NONE:
1393                 break;
1394         }
1395 }
1396
1397 static void qedf_abort_io(struct fc_lport *lport)
1398 {
1399         /* NO-OP but need to fill in the template */
1400 }
1401
1402 static void qedf_fcp_cleanup(struct fc_lport *lport)
1403 {
1404         /*
1405          * NO-OP but need to fill in template to prevent a NULL
1406          * function pointer dereference during link down. I/Os
1407          * will be flushed when port is uploaded.
1408          */
1409 }
1410
1411 static struct libfc_function_template qedf_lport_template = {
1412         .frame_send             = qedf_xmit,
1413         .fcp_abort_io           = qedf_abort_io,
1414         .fcp_cleanup            = qedf_fcp_cleanup,
1415         .rport_event_callback   = qedf_rport_event_handler,
1416         .elsct_send             = qedf_elsct_send,
1417 };
1418
1419 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf)
1420 {
1421         fcoe_ctlr_init(&qedf->ctlr, FIP_ST_AUTO);
1422
1423         qedf->ctlr.send = qedf_fip_send;
1424         qedf->ctlr.get_src_addr = qedf_get_src_mac;
1425         ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac);
1426 }
1427
1428 static void qedf_setup_fdmi(struct qedf_ctx *qedf)
1429 {
1430         struct fc_lport *lport = qedf->lport;
1431         struct fc_host_attrs *fc_host = shost_to_fc_host(lport->host);
1432         u8 buf[8];
1433         int i, pos;
1434
1435         /*
1436          * fdmi_enabled needs to be set for libfc to execute FDMI registration.
1437          */
1438         lport->fdmi_enabled = 1;
1439
1440         /*
1441          * Setup the necessary fc_host attributes to that will be used to fill
1442          * in the FDMI information.
1443          */
1444
1445         /* Get the PCI-e Device Serial Number Capability */
1446         pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN);
1447         if (pos) {
1448                 pos += 4;
1449                 for (i = 0; i < 8; i++)
1450                         pci_read_config_byte(qedf->pdev, pos + i, &buf[i]);
1451
1452                 snprintf(fc_host->serial_number,
1453                     sizeof(fc_host->serial_number),
1454                     "%02X%02X%02X%02X%02X%02X%02X%02X",
1455                     buf[7], buf[6], buf[5], buf[4],
1456                     buf[3], buf[2], buf[1], buf[0]);
1457         } else
1458                 snprintf(fc_host->serial_number,
1459                     sizeof(fc_host->serial_number), "Unknown");
1460
1461         snprintf(fc_host->manufacturer,
1462             sizeof(fc_host->manufacturer), "%s", "Cavium Inc.");
1463
1464         snprintf(fc_host->model, sizeof(fc_host->model), "%s", "QL41000");
1465
1466         snprintf(fc_host->model_description, sizeof(fc_host->model_description),
1467             "%s", "QLogic FastLinQ QL41000 Series 10/25/40/50GGbE Controller"
1468             "(FCoE)");
1469
1470         snprintf(fc_host->hardware_version, sizeof(fc_host->hardware_version),
1471             "Rev %d", qedf->pdev->revision);
1472
1473         snprintf(fc_host->driver_version, sizeof(fc_host->driver_version),
1474             "%s", QEDF_VERSION);
1475
1476         snprintf(fc_host->firmware_version, sizeof(fc_host->firmware_version),
1477             "%d.%d.%d.%d", FW_MAJOR_VERSION, FW_MINOR_VERSION,
1478             FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
1479 }
1480
1481 static int qedf_lport_setup(struct qedf_ctx *qedf)
1482 {
1483         struct fc_lport *lport = qedf->lport;
1484
1485         lport->link_up = 0;
1486         lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1487         lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1488         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1489             FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1490         lport->boot_time = jiffies;
1491         lport->e_d_tov = 2 * 1000;
1492         lport->r_a_tov = 10 * 1000;
1493
1494         /* Set NPIV support */
1495         lport->does_npiv = 1;
1496         fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV;
1497
1498         fc_set_wwnn(lport, qedf->wwnn);
1499         fc_set_wwpn(lport, qedf->wwpn);
1500
1501         fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0);
1502
1503         /* Allocate the exchange manager */
1504         fc_exch_mgr_alloc(lport, FC_CLASS_3, qedf->max_scsi_xid + 1,
1505             qedf->max_els_xid, NULL);
1506
1507         if (fc_lport_init_stats(lport))
1508                 return -ENOMEM;
1509
1510         /* Finish lport config */
1511         fc_lport_config(lport);
1512
1513         /* Set max frame size */
1514         fc_set_mfs(lport, QEDF_MFS);
1515         fc_host_maxframe_size(lport->host) = lport->mfs;
1516
1517         /* Set default dev_loss_tmo based on module parameter */
1518         fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo;
1519
1520         /* Set symbolic node name */
1521         snprintf(fc_host_symbolic_name(lport->host), 256,
1522             "QLogic %s v%s", QEDF_MODULE_NAME, QEDF_VERSION);
1523
1524         qedf_setup_fdmi(qedf);
1525
1526         return 0;
1527 }
1528
1529 /*
1530  * NPIV functions
1531  */
1532
1533 static int qedf_vport_libfc_config(struct fc_vport *vport,
1534         struct fc_lport *lport)
1535 {
1536         lport->link_up = 0;
1537         lport->qfull = 0;
1538         lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1539         lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1540         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1541             FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1542         lport->boot_time = jiffies;
1543         lport->e_d_tov = 2 * 1000;
1544         lport->r_a_tov = 10 * 1000;
1545         lport->does_npiv = 1; /* Temporary until we add NPIV support */
1546
1547         /* Allocate stats for vport */
1548         if (fc_lport_init_stats(lport))
1549                 return -ENOMEM;
1550
1551         /* Finish lport config */
1552         fc_lport_config(lport);
1553
1554         /* offload related configuration */
1555         lport->crc_offload = 0;
1556         lport->seq_offload = 0;
1557         lport->lro_enabled = 0;
1558         lport->lro_xid = 0;
1559         lport->lso_max = 0;
1560
1561         return 0;
1562 }
1563
1564 static int qedf_vport_create(struct fc_vport *vport, bool disabled)
1565 {
1566         struct Scsi_Host *shost = vport_to_shost(vport);
1567         struct fc_lport *n_port = shost_priv(shost);
1568         struct fc_lport *vn_port;
1569         struct qedf_ctx *base_qedf = lport_priv(n_port);
1570         struct qedf_ctx *vport_qedf;
1571
1572         char buf[32];
1573         int rc = 0;
1574
1575         rc = fcoe_validate_vport_create(vport);
1576         if (rc) {
1577                 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1578                 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, "
1579                            "WWPN (0x%s) already exists.\n", buf);
1580                 goto err1;
1581         }
1582
1583         if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) {
1584                 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport "
1585                            "because link is not up.\n");
1586                 rc = -EIO;
1587                 goto err1;
1588         }
1589
1590         vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx));
1591         if (!vn_port) {
1592                 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport "
1593                            "for vport.\n");
1594                 rc = -ENOMEM;
1595                 goto err1;
1596         }
1597
1598         fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1599         QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n",
1600             buf);
1601
1602         /* Copy some fields from base_qedf */
1603         vport_qedf = lport_priv(vn_port);
1604         memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx));
1605
1606         /* Set qedf data specific to this vport */
1607         vport_qedf->lport = vn_port;
1608         /* Use same hba_lock as base_qedf */
1609         vport_qedf->hba_lock = base_qedf->hba_lock;
1610         vport_qedf->pdev = base_qedf->pdev;
1611         vport_qedf->cmd_mgr = base_qedf->cmd_mgr;
1612         init_completion(&vport_qedf->flogi_compl);
1613         INIT_LIST_HEAD(&vport_qedf->fcports);
1614
1615         rc = qedf_vport_libfc_config(vport, vn_port);
1616         if (rc) {
1617                 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory "
1618                     "for lport stats.\n");
1619                 goto err2;
1620         }
1621
1622         fc_set_wwnn(vn_port, vport->node_name);
1623         fc_set_wwpn(vn_port, vport->port_name);
1624         vport_qedf->wwnn = vn_port->wwnn;
1625         vport_qedf->wwpn = vn_port->wwpn;
1626
1627         vn_port->host->transportt = qedf_fc_vport_transport_template;
1628         vn_port->host->can_queue = QEDF_MAX_ELS_XID;
1629         vn_port->host->max_lun = qedf_max_lun;
1630         vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD;
1631         vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN;
1632
1633         rc = scsi_add_host(vn_port->host, &vport->dev);
1634         if (rc) {
1635                 QEDF_WARN(&(base_qedf->dbg_ctx), "Error adding Scsi_Host.\n");
1636                 goto err2;
1637         }
1638
1639         /* Set default dev_loss_tmo based on module parameter */
1640         fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo;
1641
1642         /* Init libfc stuffs */
1643         memcpy(&vn_port->tt, &qedf_lport_template,
1644                 sizeof(qedf_lport_template));
1645         fc_exch_init(vn_port);
1646         fc_elsct_init(vn_port);
1647         fc_lport_init(vn_port);
1648         fc_disc_init(vn_port);
1649         fc_disc_config(vn_port, vn_port);
1650
1651
1652         /* Allocate the exchange manager */
1653         shost = vport_to_shost(vport);
1654         n_port = shost_priv(shost);
1655         fc_exch_mgr_list_clone(n_port, vn_port);
1656
1657         /* Set max frame size */
1658         fc_set_mfs(vn_port, QEDF_MFS);
1659
1660         fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN;
1661
1662         if (disabled) {
1663                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1664         } else {
1665                 vn_port->boot_time = jiffies;
1666                 fc_fabric_login(vn_port);
1667                 fc_vport_setlink(vn_port);
1668         }
1669
1670         QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n",
1671                    vn_port);
1672
1673         /* Set up debug context for vport */
1674         vport_qedf->dbg_ctx.host_no = vn_port->host->host_no;
1675         vport_qedf->dbg_ctx.pdev = base_qedf->pdev;
1676
1677 err2:
1678         scsi_host_put(vn_port->host);
1679 err1:
1680         return rc;
1681 }
1682
1683 static int qedf_vport_destroy(struct fc_vport *vport)
1684 {
1685         struct Scsi_Host *shost = vport_to_shost(vport);
1686         struct fc_lport *n_port = shost_priv(shost);
1687         struct fc_lport *vn_port = vport->dd_data;
1688         struct qedf_ctx *qedf = lport_priv(vn_port);
1689
1690         if (!qedf) {
1691                 QEDF_ERR(NULL, "qedf is NULL.\n");
1692                 goto out;
1693         }
1694
1695         /* Set unloading bit on vport qedf_ctx to prevent more I/O */
1696         set_bit(QEDF_UNLOADING, &qedf->flags);
1697
1698         mutex_lock(&n_port->lp_mutex);
1699         list_del(&vn_port->list);
1700         mutex_unlock(&n_port->lp_mutex);
1701
1702         fc_fabric_logoff(vn_port);
1703         fc_lport_destroy(vn_port);
1704
1705         /* Detach from scsi-ml */
1706         fc_remove_host(vn_port->host);
1707         scsi_remove_host(vn_port->host);
1708
1709         /*
1710          * Only try to release the exchange manager if the vn_port
1711          * configuration is complete.
1712          */
1713         if (vn_port->state == LPORT_ST_READY)
1714                 fc_exch_mgr_free(vn_port);
1715
1716         /* Free memory used by statistical counters */
1717         fc_lport_free_stats(vn_port);
1718
1719         /* Release Scsi_Host */
1720         if (vn_port->host)
1721                 scsi_host_put(vn_port->host);
1722
1723 out:
1724         return 0;
1725 }
1726
1727 static int qedf_vport_disable(struct fc_vport *vport, bool disable)
1728 {
1729         struct fc_lport *lport = vport->dd_data;
1730
1731         if (disable) {
1732                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1733                 fc_fabric_logoff(lport);
1734         } else {
1735                 lport->boot_time = jiffies;
1736                 fc_fabric_login(lport);
1737                 fc_vport_setlink(lport);
1738         }
1739         return 0;
1740 }
1741
1742 /*
1743  * During removal we need to wait for all the vports associated with a port
1744  * to be destroyed so we avoid a race condition where libfc is still trying
1745  * to reap vports while the driver remove function has already reaped the
1746  * driver contexts associated with the physical port.
1747  */
1748 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf)
1749 {
1750         struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host);
1751
1752         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
1753             "Entered.\n");
1754         while (fc_host->npiv_vports_inuse > 0) {
1755                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
1756                     "Waiting for all vports to be reaped.\n");
1757                 msleep(1000);
1758         }
1759 }
1760
1761 /**
1762  * qedf_fcoe_reset - Resets the fcoe
1763  *
1764  * @shost: shost the reset is from
1765  *
1766  * Returns: always 0
1767  */
1768 static int qedf_fcoe_reset(struct Scsi_Host *shost)
1769 {
1770         struct fc_lport *lport = shost_priv(shost);
1771
1772         qedf_ctx_soft_reset(lport);
1773         return 0;
1774 }
1775
1776 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host
1777         *shost)
1778 {
1779         struct fc_host_statistics *qedf_stats;
1780         struct fc_lport *lport = shost_priv(shost);
1781         struct qedf_ctx *qedf = lport_priv(lport);
1782         struct qed_fcoe_stats *fw_fcoe_stats;
1783
1784         qedf_stats = fc_get_host_stats(shost);
1785
1786         /* We don't collect offload stats for specific NPIV ports */
1787         if (lport->vport)
1788                 goto out;
1789
1790         fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL);
1791         if (!fw_fcoe_stats) {
1792                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for "
1793                     "fw_fcoe_stats.\n");
1794                 goto out;
1795         }
1796
1797         mutex_lock(&qedf->stats_mutex);
1798
1799         /* Query firmware for offload stats */
1800         qed_ops->get_stats(qedf->cdev, fw_fcoe_stats);
1801
1802         /*
1803          * The expectation is that we add our offload stats to the stats
1804          * being maintained by libfc each time the fc_get_host_status callback
1805          * is invoked. The additions are not carried over for each call to
1806          * the fc_get_host_stats callback.
1807          */
1808         qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt +
1809             fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt +
1810             fw_fcoe_stats->fcoe_tx_other_pkt_cnt;
1811         qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt +
1812             fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt +
1813             fw_fcoe_stats->fcoe_rx_other_pkt_cnt;
1814         qedf_stats->fcp_input_megabytes +=
1815             do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000);
1816         qedf_stats->fcp_output_megabytes +=
1817             do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000);
1818         qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4;
1819         qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4;
1820         qedf_stats->invalid_crc_count +=
1821             fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt;
1822         qedf_stats->dumped_frames =
1823             fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
1824         qedf_stats->error_frames +=
1825             fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
1826         qedf_stats->fcp_input_requests += qedf->input_requests;
1827         qedf_stats->fcp_output_requests += qedf->output_requests;
1828         qedf_stats->fcp_control_requests += qedf->control_requests;
1829         qedf_stats->fcp_packet_aborts += qedf->packet_aborts;
1830         qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures;
1831
1832         mutex_unlock(&qedf->stats_mutex);
1833         kfree(fw_fcoe_stats);
1834 out:
1835         return qedf_stats;
1836 }
1837
1838 static struct fc_function_template qedf_fc_transport_fn = {
1839         .show_host_node_name = 1,
1840         .show_host_port_name = 1,
1841         .show_host_supported_classes = 1,
1842         .show_host_supported_fc4s = 1,
1843         .show_host_active_fc4s = 1,
1844         .show_host_maxframe_size = 1,
1845
1846         .show_host_port_id = 1,
1847         .show_host_supported_speeds = 1,
1848         .get_host_speed = fc_get_host_speed,
1849         .show_host_speed = 1,
1850         .show_host_port_type = 1,
1851         .get_host_port_state = fc_get_host_port_state,
1852         .show_host_port_state = 1,
1853         .show_host_symbolic_name = 1,
1854
1855         /*
1856          * Tell FC transport to allocate enough space to store the backpointer
1857          * for the associate qedf_rport struct.
1858          */
1859         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
1860                                 sizeof(struct qedf_rport)),
1861         .show_rport_maxframe_size = 1,
1862         .show_rport_supported_classes = 1,
1863         .show_host_fabric_name = 1,
1864         .show_starget_node_name = 1,
1865         .show_starget_port_name = 1,
1866         .show_starget_port_id = 1,
1867         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
1868         .show_rport_dev_loss_tmo = 1,
1869         .get_fc_host_stats = qedf_fc_get_host_stats,
1870         .issue_fc_host_lip = qedf_fcoe_reset,
1871         .vport_create = qedf_vport_create,
1872         .vport_delete = qedf_vport_destroy,
1873         .vport_disable = qedf_vport_disable,
1874         .bsg_request = fc_lport_bsg_request,
1875 };
1876
1877 static struct fc_function_template qedf_fc_vport_transport_fn = {
1878         .show_host_node_name = 1,
1879         .show_host_port_name = 1,
1880         .show_host_supported_classes = 1,
1881         .show_host_supported_fc4s = 1,
1882         .show_host_active_fc4s = 1,
1883         .show_host_maxframe_size = 1,
1884         .show_host_port_id = 1,
1885         .show_host_supported_speeds = 1,
1886         .get_host_speed = fc_get_host_speed,
1887         .show_host_speed = 1,
1888         .show_host_port_type = 1,
1889         .get_host_port_state = fc_get_host_port_state,
1890         .show_host_port_state = 1,
1891         .show_host_symbolic_name = 1,
1892         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
1893                                 sizeof(struct qedf_rport)),
1894         .show_rport_maxframe_size = 1,
1895         .show_rport_supported_classes = 1,
1896         .show_host_fabric_name = 1,
1897         .show_starget_node_name = 1,
1898         .show_starget_port_name = 1,
1899         .show_starget_port_id = 1,
1900         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
1901         .show_rport_dev_loss_tmo = 1,
1902         .get_fc_host_stats = fc_get_host_stats,
1903         .issue_fc_host_lip = qedf_fcoe_reset,
1904         .bsg_request = fc_lport_bsg_request,
1905 };
1906
1907 static bool qedf_fp_has_work(struct qedf_fastpath *fp)
1908 {
1909         struct qedf_ctx *qedf = fp->qedf;
1910         struct global_queue *que;
1911         struct qed_sb_info *sb_info = fp->sb_info;
1912         struct status_block_e4 *sb = sb_info->sb_virt;
1913         u16 prod_idx;
1914
1915         /* Get the pointer to the global CQ this completion is on */
1916         que = qedf->global_queues[fp->sb_id];
1917
1918         /* Be sure all responses have been written to PI */
1919         rmb();
1920
1921         /* Get the current firmware producer index */
1922         prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
1923
1924         return (que->cq_prod_idx != prod_idx);
1925 }
1926
1927 /*
1928  * Interrupt handler code.
1929  */
1930
1931 /* Process completion queue and copy CQE contents for deferred processesing
1932  *
1933  * Return true if we should wake the I/O thread, false if not.
1934  */
1935 static bool qedf_process_completions(struct qedf_fastpath *fp)
1936 {
1937         struct qedf_ctx *qedf = fp->qedf;
1938         struct qed_sb_info *sb_info = fp->sb_info;
1939         struct status_block_e4 *sb = sb_info->sb_virt;
1940         struct global_queue *que;
1941         u16 prod_idx;
1942         struct fcoe_cqe *cqe;
1943         struct qedf_io_work *io_work;
1944         int num_handled = 0;
1945         unsigned int cpu;
1946         struct qedf_ioreq *io_req = NULL;
1947         u16 xid;
1948         u16 new_cqes;
1949         u32 comp_type;
1950
1951         /* Get the current firmware producer index */
1952         prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
1953
1954         /* Get the pointer to the global CQ this completion is on */
1955         que = qedf->global_queues[fp->sb_id];
1956
1957         /* Calculate the amount of new elements since last processing */
1958         new_cqes = (prod_idx >= que->cq_prod_idx) ?
1959             (prod_idx - que->cq_prod_idx) :
1960             0x10000 - que->cq_prod_idx + prod_idx;
1961
1962         /* Save producer index */
1963         que->cq_prod_idx = prod_idx;
1964
1965         while (new_cqes) {
1966                 fp->completions++;
1967                 num_handled++;
1968                 cqe = &que->cq[que->cq_cons_idx];
1969
1970                 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
1971                     FCOE_CQE_CQE_TYPE_MASK;
1972
1973                 /*
1974                  * Process unsolicited CQEs directly in the interrupt handler
1975                  * sine we need the fastpath ID
1976                  */
1977                 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) {
1978                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL,
1979                            "Unsolicated CQE.\n");
1980                         qedf_process_unsol_compl(qedf, fp->sb_id, cqe);
1981                         /*
1982                          * Don't add a work list item.  Increment consumer
1983                          * consumer index and move on.
1984                          */
1985                         goto inc_idx;
1986                 }
1987
1988                 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
1989                 io_req = &qedf->cmd_mgr->cmds[xid];
1990
1991                 /*
1992                  * Figure out which percpu thread we should queue this I/O
1993                  * on.
1994                  */
1995                 if (!io_req)
1996                         /* If there is not io_req assocated with this CQE
1997                          * just queue it on CPU 0
1998                          */
1999                         cpu = 0;
2000                 else {
2001                         cpu = io_req->cpu;
2002                         io_req->int_cpu = smp_processor_id();
2003                 }
2004
2005                 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC);
2006                 if (!io_work) {
2007                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate "
2008                                    "work for I/O completion.\n");
2009                         continue;
2010                 }
2011                 memset(io_work, 0, sizeof(struct qedf_io_work));
2012
2013                 INIT_WORK(&io_work->work, qedf_fp_io_handler);
2014
2015                 /* Copy contents of CQE for deferred processing */
2016                 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe));
2017
2018                 io_work->qedf = fp->qedf;
2019                 io_work->fp = NULL; /* Only used for unsolicited frames */
2020
2021                 queue_work_on(cpu, qedf_io_wq, &io_work->work);
2022
2023 inc_idx:
2024                 que->cq_cons_idx++;
2025                 if (que->cq_cons_idx == fp->cq_num_entries)
2026                         que->cq_cons_idx = 0;
2027                 new_cqes--;
2028         }
2029
2030         return true;
2031 }
2032
2033
2034 /* MSI-X fastpath handler code */
2035 static irqreturn_t qedf_msix_handler(int irq, void *dev_id)
2036 {
2037         struct qedf_fastpath *fp = dev_id;
2038
2039         if (!fp) {
2040                 QEDF_ERR(NULL, "fp is null.\n");
2041                 return IRQ_HANDLED;
2042         }
2043         if (!fp->sb_info) {
2044                 QEDF_ERR(NULL, "fp->sb_info in null.");
2045                 return IRQ_HANDLED;
2046         }
2047
2048         /*
2049          * Disable interrupts for this status block while we process new
2050          * completions
2051          */
2052         qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/);
2053
2054         while (1) {
2055                 qedf_process_completions(fp);
2056
2057                 if (qedf_fp_has_work(fp) == 0) {
2058                         /* Update the sb information */
2059                         qed_sb_update_sb_idx(fp->sb_info);
2060
2061                         /* Check for more work */
2062                         rmb();
2063
2064                         if (qedf_fp_has_work(fp) == 0) {
2065                                 /* Re-enable interrupts */
2066                                 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
2067                                 return IRQ_HANDLED;
2068                         }
2069                 }
2070         }
2071
2072         /* Do we ever want to break out of above loop? */
2073         return IRQ_HANDLED;
2074 }
2075
2076 /* simd handler for MSI/INTa */
2077 static void qedf_simd_int_handler(void *cookie)
2078 {
2079         /* Cookie is qedf_ctx struct */
2080         struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2081
2082         QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf);
2083 }
2084
2085 #define QEDF_SIMD_HANDLER_NUM           0
2086 static void qedf_sync_free_irqs(struct qedf_ctx *qedf)
2087 {
2088         int i;
2089
2090         if (qedf->int_info.msix_cnt) {
2091                 for (i = 0; i < qedf->int_info.used_cnt; i++) {
2092                         synchronize_irq(qedf->int_info.msix[i].vector);
2093                         irq_set_affinity_hint(qedf->int_info.msix[i].vector,
2094                             NULL);
2095                         irq_set_affinity_notifier(qedf->int_info.msix[i].vector,
2096                             NULL);
2097                         free_irq(qedf->int_info.msix[i].vector,
2098                             &qedf->fp_array[i]);
2099                 }
2100         } else
2101                 qed_ops->common->simd_handler_clean(qedf->cdev,
2102                     QEDF_SIMD_HANDLER_NUM);
2103
2104         qedf->int_info.used_cnt = 0;
2105         qed_ops->common->set_fp_int(qedf->cdev, 0);
2106 }
2107
2108 static int qedf_request_msix_irq(struct qedf_ctx *qedf)
2109 {
2110         int i, rc, cpu;
2111
2112         cpu = cpumask_first(cpu_online_mask);
2113         for (i = 0; i < qedf->num_queues; i++) {
2114                 rc = request_irq(qedf->int_info.msix[i].vector,
2115                     qedf_msix_handler, 0, "qedf", &qedf->fp_array[i]);
2116
2117                 if (rc) {
2118                         QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n");
2119                         qedf_sync_free_irqs(qedf);
2120                         return rc;
2121                 }
2122
2123                 qedf->int_info.used_cnt++;
2124                 rc = irq_set_affinity_hint(qedf->int_info.msix[i].vector,
2125                     get_cpu_mask(cpu));
2126                 cpu = cpumask_next(cpu, cpu_online_mask);
2127         }
2128
2129         return 0;
2130 }
2131
2132 static int qedf_setup_int(struct qedf_ctx *qedf)
2133 {
2134         int rc = 0;
2135
2136         /*
2137          * Learn interrupt configuration
2138          */
2139         rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus());
2140         if (rc <= 0)
2141                 return 0;
2142
2143         rc  = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info);
2144         if (rc)
2145                 return 0;
2146
2147         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = "
2148                    "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt,
2149                    num_online_cpus());
2150
2151         if (qedf->int_info.msix_cnt)
2152                 return qedf_request_msix_irq(qedf);
2153
2154         qed_ops->common->simd_handler_config(qedf->cdev, &qedf,
2155             QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler);
2156         qedf->int_info.used_cnt = 1;
2157
2158         QEDF_ERR(&qedf->dbg_ctx, "Only MSI-X supported. Failing probe.\n");
2159         return -EINVAL;
2160 }
2161
2162 /* Main function for libfc frame reception */
2163 static void qedf_recv_frame(struct qedf_ctx *qedf,
2164         struct sk_buff *skb)
2165 {
2166         u32 fr_len;
2167         struct fc_lport *lport;
2168         struct fc_frame_header *fh;
2169         struct fcoe_crc_eof crc_eof;
2170         struct fc_frame *fp;
2171         u8 *mac = NULL;
2172         u8 *dest_mac = NULL;
2173         struct fcoe_hdr *hp;
2174         struct qedf_rport *fcport;
2175         struct fc_lport *vn_port;
2176         u32 f_ctl;
2177
2178         lport = qedf->lport;
2179         if (lport == NULL || lport->state == LPORT_ST_DISABLED) {
2180                 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n");
2181                 kfree_skb(skb);
2182                 return;
2183         }
2184
2185         if (skb_is_nonlinear(skb))
2186                 skb_linearize(skb);
2187         mac = eth_hdr(skb)->h_source;
2188         dest_mac = eth_hdr(skb)->h_dest;
2189
2190         /* Pull the header */
2191         hp = (struct fcoe_hdr *)skb->data;
2192         fh = (struct fc_frame_header *) skb_transport_header(skb);
2193         skb_pull(skb, sizeof(struct fcoe_hdr));
2194         fr_len = skb->len - sizeof(struct fcoe_crc_eof);
2195
2196         fp = (struct fc_frame *)skb;
2197         fc_frame_init(fp);
2198         fr_dev(fp) = lport;
2199         fr_sof(fp) = hp->fcoe_sof;
2200         if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
2201                 kfree_skb(skb);
2202                 return;
2203         }
2204         fr_eof(fp) = crc_eof.fcoe_eof;
2205         fr_crc(fp) = crc_eof.fcoe_crc32;
2206         if (pskb_trim(skb, fr_len)) {
2207                 kfree_skb(skb);
2208                 return;
2209         }
2210
2211         fh = fc_frame_header_get(fp);
2212
2213         /*
2214          * Invalid frame filters.
2215          */
2216
2217         if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
2218             fh->fh_type == FC_TYPE_FCP) {
2219                 /* Drop FCP data. We dont this in L2 path */
2220                 kfree_skb(skb);
2221                 return;
2222         }
2223         if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
2224             fh->fh_type == FC_TYPE_ELS) {
2225                 switch (fc_frame_payload_op(fp)) {
2226                 case ELS_LOGO:
2227                         if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
2228                                 /* drop non-FIP LOGO */
2229                                 kfree_skb(skb);
2230                                 return;
2231                         }
2232                         break;
2233                 }
2234         }
2235
2236         if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
2237                 /* Drop incoming ABTS */
2238                 kfree_skb(skb);
2239                 return;
2240         }
2241
2242         if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
2243                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2244                     "FC frame d_id mismatch with MAC %pM.\n", dest_mac);
2245                 kfree_skb(skb);
2246                 return;
2247         }
2248
2249         if (qedf->ctlr.state) {
2250                 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) {
2251                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2252                             "Wrong source address: mac:%pM dest_addr:%pM.\n",
2253                             mac, qedf->ctlr.dest_addr);
2254                         kfree_skb(skb);
2255                         return;
2256                 }
2257         }
2258
2259         vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
2260
2261         /*
2262          * If the destination ID from the frame header does not match what we
2263          * have on record for lport and the search for a NPIV port came up
2264          * empty then this is not addressed to our port so simply drop it.
2265          */
2266         if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
2267                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2268                     "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n",
2269                     lport->port_id, ntoh24(fh->fh_d_id));
2270                 kfree_skb(skb);
2271                 return;
2272         }
2273
2274         f_ctl = ntoh24(fh->fh_f_ctl);
2275         if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) &&
2276             (f_ctl & FC_FC_EX_CTX)) {
2277                 /* Drop incoming ABTS response that has both SEQ/EX CTX set */
2278                 kfree_skb(skb);
2279                 return;
2280         }
2281
2282         /*
2283          * If a connection is uploading, drop incoming FCoE frames as there
2284          * is a small window where we could try to return a frame while libfc
2285          * is trying to clean things up.
2286          */
2287
2288         /* Get fcport associated with d_id if it exists */
2289         fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
2290
2291         if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
2292             &fcport->flags)) {
2293                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2294                     "Connection uploading, dropping fp=%p.\n", fp);
2295                 kfree_skb(skb);
2296                 return;
2297         }
2298
2299         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: "
2300             "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp,
2301             ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl,
2302             fh->fh_type);
2303         if (qedf_dump_frames)
2304                 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
2305                     1, skb->data, skb->len, false);
2306         fc_exch_recv(lport, fp);
2307 }
2308
2309 static void qedf_ll2_process_skb(struct work_struct *work)
2310 {
2311         struct qedf_skb_work *skb_work =
2312             container_of(work, struct qedf_skb_work, work);
2313         struct qedf_ctx *qedf = skb_work->qedf;
2314         struct sk_buff *skb = skb_work->skb;
2315         struct ethhdr *eh;
2316
2317         if (!qedf) {
2318                 QEDF_ERR(NULL, "qedf is NULL\n");
2319                 goto err_out;
2320         }
2321
2322         eh = (struct ethhdr *)skb->data;
2323
2324         /* Undo VLAN encapsulation */
2325         if (eh->h_proto == htons(ETH_P_8021Q)) {
2326                 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
2327                 eh = skb_pull(skb, VLAN_HLEN);
2328                 skb_reset_mac_header(skb);
2329         }
2330
2331         /*
2332          * Process either a FIP frame or FCoE frame based on the
2333          * protocol value.  If it's not either just drop the
2334          * frame.
2335          */
2336         if (eh->h_proto == htons(ETH_P_FIP)) {
2337                 qedf_fip_recv(qedf, skb);
2338                 goto out;
2339         } else if (eh->h_proto == htons(ETH_P_FCOE)) {
2340                 __skb_pull(skb, ETH_HLEN);
2341                 qedf_recv_frame(qedf, skb);
2342                 goto out;
2343         } else
2344                 goto err_out;
2345
2346 err_out:
2347         kfree_skb(skb);
2348 out:
2349         kfree(skb_work);
2350         return;
2351 }
2352
2353 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb,
2354         u32 arg1, u32 arg2)
2355 {
2356         struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2357         struct qedf_skb_work *skb_work;
2358
2359         skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC);
2360         if (!skb_work) {
2361                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so "
2362                            "dropping frame.\n");
2363                 kfree_skb(skb);
2364                 return 0;
2365         }
2366
2367         INIT_WORK(&skb_work->work, qedf_ll2_process_skb);
2368         skb_work->skb = skb;
2369         skb_work->qedf = qedf;
2370         queue_work(qedf->ll2_recv_wq, &skb_work->work);
2371
2372         return 0;
2373 }
2374
2375 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = {
2376         .rx_cb = qedf_ll2_rx,
2377         .tx_cb = NULL,
2378 };
2379
2380 /* Main thread to process I/O completions */
2381 void qedf_fp_io_handler(struct work_struct *work)
2382 {
2383         struct qedf_io_work *io_work =
2384             container_of(work, struct qedf_io_work, work);
2385         u32 comp_type;
2386
2387         /*
2388          * Deferred part of unsolicited CQE sends
2389          * frame to libfc.
2390          */
2391         comp_type = (io_work->cqe.cqe_data >>
2392             FCOE_CQE_CQE_TYPE_SHIFT) &
2393             FCOE_CQE_CQE_TYPE_MASK;
2394         if (comp_type == FCOE_UNSOLIC_CQE_TYPE &&
2395             io_work->fp)
2396                 fc_exch_recv(io_work->qedf->lport, io_work->fp);
2397         else
2398                 qedf_process_cqe(io_work->qedf, &io_work->cqe);
2399
2400         kfree(io_work);
2401 }
2402
2403 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf,
2404         struct qed_sb_info *sb_info, u16 sb_id)
2405 {
2406         struct status_block_e4 *sb_virt;
2407         dma_addr_t sb_phys;
2408         int ret;
2409
2410         sb_virt = dma_alloc_coherent(&qedf->pdev->dev,
2411             sizeof(struct status_block_e4), &sb_phys, GFP_KERNEL);
2412
2413         if (!sb_virt) {
2414                 QEDF_ERR(&(qedf->dbg_ctx), "Status block allocation failed "
2415                           "for id = %d.\n", sb_id);
2416                 return -ENOMEM;
2417         }
2418
2419         ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys,
2420             sb_id, QED_SB_TYPE_STORAGE);
2421
2422         if (ret) {
2423                 QEDF_ERR(&(qedf->dbg_ctx), "Status block initialization "
2424                           "failed for id = %d.\n", sb_id);
2425                 return ret;
2426         }
2427
2428         return 0;
2429 }
2430
2431 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info)
2432 {
2433         if (sb_info->sb_virt)
2434                 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt),
2435                     (void *)sb_info->sb_virt, sb_info->sb_phys);
2436 }
2437
2438 static void qedf_destroy_sb(struct qedf_ctx *qedf)
2439 {
2440         int id;
2441         struct qedf_fastpath *fp = NULL;
2442
2443         for (id = 0; id < qedf->num_queues; id++) {
2444                 fp = &(qedf->fp_array[id]);
2445                 if (fp->sb_id == QEDF_SB_ID_NULL)
2446                         break;
2447                 qedf_free_sb(qedf, fp->sb_info);
2448                 kfree(fp->sb_info);
2449         }
2450         kfree(qedf->fp_array);
2451 }
2452
2453 static int qedf_prepare_sb(struct qedf_ctx *qedf)
2454 {
2455         int id;
2456         struct qedf_fastpath *fp;
2457         int ret;
2458
2459         qedf->fp_array =
2460             kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath),
2461                 GFP_KERNEL);
2462
2463         if (!qedf->fp_array) {
2464                 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation "
2465                           "failed.\n");
2466                 return -ENOMEM;
2467         }
2468
2469         for (id = 0; id < qedf->num_queues; id++) {
2470                 fp = &(qedf->fp_array[id]);
2471                 fp->sb_id = QEDF_SB_ID_NULL;
2472                 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL);
2473                 if (!fp->sb_info) {
2474                         QEDF_ERR(&(qedf->dbg_ctx), "SB info struct "
2475                                   "allocation failed.\n");
2476                         goto err;
2477                 }
2478                 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id);
2479                 if (ret) {
2480                         QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and "
2481                                   "initialization failed.\n");
2482                         goto err;
2483                 }
2484                 fp->sb_id = id;
2485                 fp->qedf = qedf;
2486                 fp->cq_num_entries =
2487                     qedf->global_queues[id]->cq_mem_size /
2488                     sizeof(struct fcoe_cqe);
2489         }
2490 err:
2491         return 0;
2492 }
2493
2494 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe)
2495 {
2496         u16 xid;
2497         struct qedf_ioreq *io_req;
2498         struct qedf_rport *fcport;
2499         u32 comp_type;
2500
2501         comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2502             FCOE_CQE_CQE_TYPE_MASK;
2503
2504         xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2505         io_req = &qedf->cmd_mgr->cmds[xid];
2506
2507         /* Completion not for a valid I/O anymore so just return */
2508         if (!io_req)
2509                 return;
2510
2511         fcport = io_req->fcport;
2512
2513         if (fcport == NULL) {
2514                 QEDF_ERR(&(qedf->dbg_ctx), "fcport is NULL.\n");
2515                 return;
2516         }
2517
2518         /*
2519          * Check that fcport is offloaded.  If it isn't then the spinlock
2520          * isn't valid and shouldn't be taken. We should just return.
2521          */
2522         if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
2523                 QEDF_ERR(&(qedf->dbg_ctx), "Session not offloaded yet.\n");
2524                 return;
2525         }
2526
2527
2528         switch (comp_type) {
2529         case FCOE_GOOD_COMPLETION_CQE_TYPE:
2530                 atomic_inc(&fcport->free_sqes);
2531                 switch (io_req->cmd_type) {
2532                 case QEDF_SCSI_CMD:
2533                         qedf_scsi_completion(qedf, cqe, io_req);
2534                         break;
2535                 case QEDF_ELS:
2536                         qedf_process_els_compl(qedf, cqe, io_req);
2537                         break;
2538                 case QEDF_TASK_MGMT_CMD:
2539                         qedf_process_tmf_compl(qedf, cqe, io_req);
2540                         break;
2541                 case QEDF_SEQ_CLEANUP:
2542                         qedf_process_seq_cleanup_compl(qedf, cqe, io_req);
2543                         break;
2544                 }
2545                 break;
2546         case FCOE_ERROR_DETECTION_CQE_TYPE:
2547                 atomic_inc(&fcport->free_sqes);
2548                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2549                     "Error detect CQE.\n");
2550                 qedf_process_error_detect(qedf, cqe, io_req);
2551                 break;
2552         case FCOE_EXCH_CLEANUP_CQE_TYPE:
2553                 atomic_inc(&fcport->free_sqes);
2554                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2555                     "Cleanup CQE.\n");
2556                 qedf_process_cleanup_compl(qedf, cqe, io_req);
2557                 break;
2558         case FCOE_ABTS_CQE_TYPE:
2559                 atomic_inc(&fcport->free_sqes);
2560                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2561                     "Abort CQE.\n");
2562                 qedf_process_abts_compl(qedf, cqe, io_req);
2563                 break;
2564         case FCOE_DUMMY_CQE_TYPE:
2565                 atomic_inc(&fcport->free_sqes);
2566                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2567                     "Dummy CQE.\n");
2568                 break;
2569         case FCOE_LOCAL_COMP_CQE_TYPE:
2570                 atomic_inc(&fcport->free_sqes);
2571                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2572                     "Local completion CQE.\n");
2573                 break;
2574         case FCOE_WARNING_CQE_TYPE:
2575                 atomic_inc(&fcport->free_sqes);
2576                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2577                     "Warning CQE.\n");
2578                 qedf_process_warning_compl(qedf, cqe, io_req);
2579                 break;
2580         case MAX_FCOE_CQE_TYPE:
2581                 atomic_inc(&fcport->free_sqes);
2582                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2583                     "Max FCoE CQE.\n");
2584                 break;
2585         default:
2586                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2587                     "Default CQE.\n");
2588                 break;
2589         }
2590 }
2591
2592 static void qedf_free_bdq(struct qedf_ctx *qedf)
2593 {
2594         int i;
2595
2596         if (qedf->bdq_pbl_list)
2597                 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE,
2598                     qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma);
2599
2600         if (qedf->bdq_pbl)
2601                 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size,
2602                     qedf->bdq_pbl, qedf->bdq_pbl_dma);
2603
2604         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2605                 if (qedf->bdq[i].buf_addr) {
2606                         dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE,
2607                             qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma);
2608                 }
2609         }
2610 }
2611
2612 static void qedf_free_global_queues(struct qedf_ctx *qedf)
2613 {
2614         int i;
2615         struct global_queue **gl = qedf->global_queues;
2616
2617         for (i = 0; i < qedf->num_queues; i++) {
2618                 if (!gl[i])
2619                         continue;
2620
2621                 if (gl[i]->cq)
2622                         dma_free_coherent(&qedf->pdev->dev,
2623                             gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma);
2624                 if (gl[i]->cq_pbl)
2625                         dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size,
2626                             gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
2627
2628                 kfree(gl[i]);
2629         }
2630
2631         qedf_free_bdq(qedf);
2632 }
2633
2634 static int qedf_alloc_bdq(struct qedf_ctx *qedf)
2635 {
2636         int i;
2637         struct scsi_bd *pbl;
2638         u64 *list;
2639         dma_addr_t page;
2640
2641         /* Alloc dma memory for BDQ buffers */
2642         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2643                 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev,
2644                     QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL);
2645                 if (!qedf->bdq[i].buf_addr) {
2646                         QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ "
2647                             "buffer %d.\n", i);
2648                         return -ENOMEM;
2649                 }
2650         }
2651
2652         /* Alloc dma memory for BDQ page buffer list */
2653         qedf->bdq_pbl_mem_size =
2654             QEDF_BDQ_SIZE * sizeof(struct scsi_bd);
2655         qedf->bdq_pbl_mem_size =
2656             ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE);
2657
2658         qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
2659             qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL);
2660         if (!qedf->bdq_pbl) {
2661                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n");
2662                 return -ENOMEM;
2663         }
2664
2665         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2666                   "BDQ PBL addr=0x%p dma=%pad\n",
2667                   qedf->bdq_pbl, &qedf->bdq_pbl_dma);
2668
2669         /*
2670          * Populate BDQ PBL with physical and virtual address of individual
2671          * BDQ buffers
2672          */
2673         pbl = (struct scsi_bd *)qedf->bdq_pbl;
2674         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2675                 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma));
2676                 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma));
2677                 pbl->opaque.fcoe_opaque.hi = 0;
2678                 /* Opaque lo data is an index into the BDQ array */
2679                 pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i);
2680                 pbl++;
2681         }
2682
2683         /* Allocate list of PBL pages */
2684         qedf->bdq_pbl_list = dma_zalloc_coherent(&qedf->pdev->dev,
2685             QEDF_PAGE_SIZE, &qedf->bdq_pbl_list_dma, GFP_KERNEL);
2686         if (!qedf->bdq_pbl_list) {
2687                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n");
2688                 return -ENOMEM;
2689         }
2690
2691         /*
2692          * Now populate PBL list with pages that contain pointers to the
2693          * individual buffers.
2694          */
2695         qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size /
2696             QEDF_PAGE_SIZE;
2697         list = (u64 *)qedf->bdq_pbl_list;
2698         page = qedf->bdq_pbl_list_dma;
2699         for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) {
2700                 *list = qedf->bdq_pbl_dma;
2701                 list++;
2702                 page += QEDF_PAGE_SIZE;
2703         }
2704
2705         return 0;
2706 }
2707
2708 static int qedf_alloc_global_queues(struct qedf_ctx *qedf)
2709 {
2710         u32 *list;
2711         int i;
2712         int status = 0, rc;
2713         u32 *pbl;
2714         dma_addr_t page;
2715         int num_pages;
2716
2717         /* Allocate and map CQs, RQs */
2718         /*
2719          * Number of global queues (CQ / RQ). This should
2720          * be <= number of available MSIX vectors for the PF
2721          */
2722         if (!qedf->num_queues) {
2723                 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n");
2724                 return 1;
2725         }
2726
2727         /*
2728          * Make sure we allocated the PBL that will contain the physical
2729          * addresses of our queues
2730          */
2731         if (!qedf->p_cpuq) {
2732                 status = 1;
2733                 goto mem_alloc_failure;
2734         }
2735
2736         qedf->global_queues = kzalloc((sizeof(struct global_queue *)
2737             * qedf->num_queues), GFP_KERNEL);
2738         if (!qedf->global_queues) {
2739                 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global "
2740                           "queues array ptr memory\n");
2741                 return -ENOMEM;
2742         }
2743         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2744                    "qedf->global_queues=%p.\n", qedf->global_queues);
2745
2746         /* Allocate DMA coherent buffers for BDQ */
2747         rc = qedf_alloc_bdq(qedf);
2748         if (rc)
2749                 goto mem_alloc_failure;
2750
2751         /* Allocate a CQ and an associated PBL for each MSI-X vector */
2752         for (i = 0; i < qedf->num_queues; i++) {
2753                 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue),
2754                     GFP_KERNEL);
2755                 if (!qedf->global_queues[i]) {
2756                         QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate "
2757                                    "global queue %d.\n", i);
2758                         status = -ENOMEM;
2759                         goto mem_alloc_failure;
2760                 }
2761
2762                 qedf->global_queues[i]->cq_mem_size =
2763                     FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
2764                 qedf->global_queues[i]->cq_mem_size =
2765                     ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE);
2766
2767                 qedf->global_queues[i]->cq_pbl_size =
2768                     (qedf->global_queues[i]->cq_mem_size /
2769                     PAGE_SIZE) * sizeof(void *);
2770                 qedf->global_queues[i]->cq_pbl_size =
2771                     ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE);
2772
2773                 qedf->global_queues[i]->cq =
2774                     dma_zalloc_coherent(&qedf->pdev->dev,
2775                         qedf->global_queues[i]->cq_mem_size,
2776                         &qedf->global_queues[i]->cq_dma, GFP_KERNEL);
2777
2778                 if (!qedf->global_queues[i]->cq) {
2779                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n");
2780                         status = -ENOMEM;
2781                         goto mem_alloc_failure;
2782                 }
2783
2784                 qedf->global_queues[i]->cq_pbl =
2785                     dma_zalloc_coherent(&qedf->pdev->dev,
2786                         qedf->global_queues[i]->cq_pbl_size,
2787                         &qedf->global_queues[i]->cq_pbl_dma, GFP_KERNEL);
2788
2789                 if (!qedf->global_queues[i]->cq_pbl) {
2790                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n");
2791                         status = -ENOMEM;
2792                         goto mem_alloc_failure;
2793                 }
2794
2795                 /* Create PBL */
2796                 num_pages = qedf->global_queues[i]->cq_mem_size /
2797                     QEDF_PAGE_SIZE;
2798                 page = qedf->global_queues[i]->cq_dma;
2799                 pbl = (u32 *)qedf->global_queues[i]->cq_pbl;
2800
2801                 while (num_pages--) {
2802                         *pbl = U64_LO(page);
2803                         pbl++;
2804                         *pbl = U64_HI(page);
2805                         pbl++;
2806                         page += QEDF_PAGE_SIZE;
2807                 }
2808                 /* Set the initial consumer index for cq */
2809                 qedf->global_queues[i]->cq_cons_idx = 0;
2810         }
2811
2812         list = (u32 *)qedf->p_cpuq;
2813
2814         /*
2815          * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
2816          * CQ#1 PBL pointer, RQ#1 PBL pointer, etc.  Each PBL pointer points
2817          * to the physical address which contains an array of pointers to
2818          * the physical addresses of the specific queue pages.
2819          */
2820         for (i = 0; i < qedf->num_queues; i++) {
2821                 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma);
2822                 list++;
2823                 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma);
2824                 list++;
2825                 *list = U64_LO(0);
2826                 list++;
2827                 *list = U64_HI(0);
2828                 list++;
2829         }
2830
2831         return 0;
2832
2833 mem_alloc_failure:
2834         qedf_free_global_queues(qedf);
2835         return status;
2836 }
2837
2838 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf)
2839 {
2840         u8 sq_num_pbl_pages;
2841         u32 sq_mem_size;
2842         u32 cq_mem_size;
2843         u32 cq_num_entries;
2844         int rval;
2845
2846         /*
2847          * The number of completion queues/fastpath interrupts/status blocks
2848          * we allocation is the minimum off:
2849          *
2850          * Number of CPUs
2851          * Number allocated by qed for our PCI function
2852          */
2853         qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf);
2854
2855         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n",
2856                    qedf->num_queues);
2857
2858         qedf->p_cpuq = pci_alloc_consistent(qedf->pdev,
2859             qedf->num_queues * sizeof(struct qedf_glbl_q_params),
2860             &qedf->hw_p_cpuq);
2861
2862         if (!qedf->p_cpuq) {
2863                 QEDF_ERR(&(qedf->dbg_ctx), "pci_alloc_consistent failed.\n");
2864                 return 1;
2865         }
2866
2867         rval = qedf_alloc_global_queues(qedf);
2868         if (rval) {
2869                 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation "
2870                           "failed.\n");
2871                 return 1;
2872         }
2873
2874         /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */
2875         sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
2876         sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE);
2877         sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE);
2878
2879         /* Calculate CQ num entries */
2880         cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
2881         cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE);
2882         cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe);
2883
2884         memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params));
2885
2886         /* Setup the value for fcoe PF */
2887         qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS;
2888         qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS;
2889         qedf->pf_params.fcoe_pf_params.glbl_q_params_addr =
2890             (u64)qedf->hw_p_cpuq;
2891         qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages;
2892
2893         qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0;
2894
2895         qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries;
2896         qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues;
2897
2898         /* log_page_size: 12 for 4KB pages */
2899         qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE);
2900
2901         qedf->pf_params.fcoe_pf_params.mtu = 9000;
2902         qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI;
2903         qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI;
2904
2905         /* BDQ address and size */
2906         qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] =
2907             qedf->bdq_pbl_list_dma;
2908         qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] =
2909             qedf->bdq_pbl_list_num_entries;
2910         qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE;
2911
2912         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2913             "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n",
2914             qedf->bdq_pbl_list,
2915             qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0],
2916             qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]);
2917
2918         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2919             "cq_num_entries=%d.\n",
2920             qedf->pf_params.fcoe_pf_params.cq_num_entries);
2921
2922         return 0;
2923 }
2924
2925 /* Free DMA coherent memory for array of queue pointers we pass to qed */
2926 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf)
2927 {
2928         size_t size = 0;
2929
2930         if (qedf->p_cpuq) {
2931                 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params);
2932                 pci_free_consistent(qedf->pdev, size, qedf->p_cpuq,
2933                     qedf->hw_p_cpuq);
2934         }
2935
2936         qedf_free_global_queues(qedf);
2937
2938         if (qedf->global_queues)
2939                 kfree(qedf->global_queues);
2940 }
2941
2942 /*
2943  * PCI driver functions
2944  */
2945
2946 static const struct pci_device_id qedf_pci_tbl[] = {
2947         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) },
2948         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) },
2949         {0}
2950 };
2951 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl);
2952
2953 static struct pci_driver qedf_pci_driver = {
2954         .name = QEDF_MODULE_NAME,
2955         .id_table = qedf_pci_tbl,
2956         .probe = qedf_probe,
2957         .remove = qedf_remove,
2958 };
2959
2960 static int __qedf_probe(struct pci_dev *pdev, int mode)
2961 {
2962         int rc = -EINVAL;
2963         struct fc_lport *lport;
2964         struct qedf_ctx *qedf;
2965         struct Scsi_Host *host;
2966         bool is_vf = false;
2967         struct qed_ll2_params params;
2968         char host_buf[20];
2969         struct qed_link_params link_params;
2970         int status;
2971         void *task_start, *task_end;
2972         struct qed_slowpath_params slowpath_params;
2973         struct qed_probe_params qed_params;
2974         u16 tmp;
2975
2976         /*
2977          * When doing error recovery we didn't reap the lport so don't try
2978          * to reallocate it.
2979          */
2980         if (mode != QEDF_MODE_RECOVERY) {
2981                 lport = libfc_host_alloc(&qedf_host_template,
2982                     sizeof(struct qedf_ctx));
2983
2984                 if (!lport) {
2985                         QEDF_ERR(NULL, "Could not allocate lport.\n");
2986                         rc = -ENOMEM;
2987                         goto err0;
2988                 }
2989
2990                 /* Initialize qedf_ctx */
2991                 qedf = lport_priv(lport);
2992                 qedf->lport = lport;
2993                 qedf->ctlr.lp = lport;
2994                 qedf->pdev = pdev;
2995                 qedf->dbg_ctx.pdev = pdev;
2996                 qedf->dbg_ctx.host_no = lport->host->host_no;
2997                 spin_lock_init(&qedf->hba_lock);
2998                 INIT_LIST_HEAD(&qedf->fcports);
2999                 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1;
3000                 atomic_set(&qedf->num_offloads, 0);
3001                 qedf->stop_io_on_error = false;
3002                 pci_set_drvdata(pdev, qedf);
3003                 init_completion(&qedf->fipvlan_compl);
3004                 mutex_init(&qedf->stats_mutex);
3005
3006                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO,
3007                    "QLogic FastLinQ FCoE Module qedf %s, "
3008                    "FW %d.%d.%d.%d\n", QEDF_VERSION,
3009                    FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
3010                    FW_ENGINEERING_VERSION);
3011         } else {
3012                 /* Init pointers during recovery */
3013                 qedf = pci_get_drvdata(pdev);
3014                 lport = qedf->lport;
3015         }
3016
3017         host = lport->host;
3018
3019         /* Allocate mempool for qedf_io_work structs */
3020         qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN,
3021             qedf_io_work_cache);
3022         if (qedf->io_mempool == NULL) {
3023                 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n");
3024                 goto err1;
3025         }
3026         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n",
3027             qedf->io_mempool);
3028
3029         sprintf(host_buf, "qedf_%u_link",
3030             qedf->lport->host->host_no);
3031         qedf->link_update_wq = create_workqueue(host_buf);
3032         INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update);
3033         INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery);
3034         INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump);
3035         qedf->fipvlan_retries = qedf_fipvlan_retries;
3036         /* Set a default prio in case DCBX doesn't converge */
3037         if (qedf_default_prio > -1) {
3038                 /*
3039                  * This is the case where we pass a modparam in so we want to
3040                  * honor it even if dcbx doesn't converge.
3041                  */
3042                 qedf->prio = qedf_default_prio;
3043         } else
3044                 qedf->prio = QEDF_DEFAULT_PRIO;
3045
3046         /*
3047          * Common probe. Takes care of basic hardware init and pci_*
3048          * functions.
3049          */
3050         memset(&qed_params, 0, sizeof(qed_params));
3051         qed_params.protocol = QED_PROTOCOL_FCOE;
3052         qed_params.dp_module = qedf_dp_module;
3053         qed_params.dp_level = qedf_dp_level;
3054         qed_params.is_vf = is_vf;
3055         qedf->cdev = qed_ops->common->probe(pdev, &qed_params);
3056         if (!qedf->cdev) {
3057                 rc = -ENODEV;
3058                 goto err1;
3059         }
3060
3061         /* Learn information crucial for qedf to progress */
3062         rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
3063         if (rc) {
3064                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n");
3065                 goto err1;
3066         }
3067
3068         /* queue allocation code should come here
3069          * order should be
3070          *      slowpath_start
3071          *      status block allocation
3072          *      interrupt registration (to get min number of queues)
3073          *      set_fcoe_pf_param
3074          *      qed_sp_fcoe_func_start
3075          */
3076         rc = qedf_set_fcoe_pf_param(qedf);
3077         if (rc) {
3078                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n");
3079                 goto err2;
3080         }
3081         qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3082
3083         /* Record BDQ producer doorbell addresses */
3084         qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr;
3085         qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr;
3086         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3087             "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod,
3088             qedf->bdq_secondary_prod);
3089
3090         qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf);
3091
3092         rc = qedf_prepare_sb(qedf);
3093         if (rc) {
3094
3095                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3096                 goto err2;
3097         }
3098
3099         /* Start the Slowpath-process */
3100         slowpath_params.int_mode = QED_INT_MODE_MSIX;
3101         slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER;
3102         slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER;
3103         slowpath_params.drv_rev = QEDF_DRIVER_REV_VER;
3104         slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER;
3105         strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE);
3106         rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params);
3107         if (rc) {
3108                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3109                 goto err2;
3110         }
3111
3112         /*
3113          * update_pf_params needs to be called before and after slowpath
3114          * start
3115          */
3116         qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3117
3118         /* Setup interrupts */
3119         rc = qedf_setup_int(qedf);
3120         if (rc)
3121                 goto err3;
3122
3123         rc = qed_ops->start(qedf->cdev, &qedf->tasks);
3124         if (rc) {
3125                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n");
3126                 goto err4;
3127         }
3128         task_start = qedf_get_task_mem(&qedf->tasks, 0);
3129         task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1);
3130         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, "
3131                    "end=%p block_size=%u.\n", task_start, task_end,
3132                    qedf->tasks.size);
3133
3134         /*
3135          * We need to write the number of BDs in the BDQ we've preallocated so
3136          * the f/w will do a prefetch and we'll get an unsolicited CQE when a
3137          * packet arrives.
3138          */
3139         qedf->bdq_prod_idx = QEDF_BDQ_SIZE;
3140         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3141             "Writing %d to primary and secondary BDQ doorbell registers.\n",
3142             qedf->bdq_prod_idx);
3143         writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod);
3144         tmp = readw(qedf->bdq_primary_prod);
3145         writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod);
3146         tmp = readw(qedf->bdq_secondary_prod);
3147
3148         qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3149
3150         /* Now that the dev_info struct has been filled in set the MAC
3151          * address
3152          */
3153         ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac);
3154         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n",
3155                    qedf->mac);
3156
3157         /*
3158          * Set the WWNN and WWPN in the following way:
3159          *
3160          * If the info we get from qed is non-zero then use that to set the
3161          * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based
3162          * on the MAC address.
3163          */
3164         if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) {
3165                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3166                     "Setting WWPN and WWNN from qed dev_info.\n");
3167                 qedf->wwnn = qedf->dev_info.wwnn;
3168                 qedf->wwpn = qedf->dev_info.wwpn;
3169         } else {
3170                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3171                     "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n");
3172                 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0);
3173                 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0);
3174         }
3175         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,  "WWNN=%016llx "
3176                    "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn);
3177
3178         sprintf(host_buf, "host_%d", host->host_no);
3179         qed_ops->common->set_name(qedf->cdev, host_buf);
3180
3181
3182         /* Set xid max values */
3183         qedf->max_scsi_xid = QEDF_MAX_SCSI_XID;
3184         qedf->max_els_xid = QEDF_MAX_ELS_XID;
3185
3186         /* Allocate cmd mgr */
3187         qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf);
3188         if (!qedf->cmd_mgr) {
3189                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n");
3190                 rc = -ENOMEM;
3191                 goto err5;
3192         }
3193
3194         if (mode != QEDF_MODE_RECOVERY) {
3195                 host->transportt = qedf_fc_transport_template;
3196                 host->can_queue = QEDF_MAX_ELS_XID;
3197                 host->max_lun = qedf_max_lun;
3198                 host->max_cmd_len = QEDF_MAX_CDB_LEN;
3199                 rc = scsi_add_host(host, &pdev->dev);
3200                 if (rc)
3201                         goto err6;
3202         }
3203
3204         memset(&params, 0, sizeof(params));
3205         params.mtu = 9000;
3206         ether_addr_copy(params.ll2_mac_address, qedf->mac);
3207
3208         /* Start LL2 processing thread */
3209         snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no);
3210         qedf->ll2_recv_wq =
3211                 create_workqueue(host_buf);
3212         if (!qedf->ll2_recv_wq) {
3213                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n");
3214                 rc = -ENOMEM;
3215                 goto err7;
3216         }
3217
3218 #ifdef CONFIG_DEBUG_FS
3219         qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops,
3220                             qedf_dbg_fops);
3221 #endif
3222
3223         /* Start LL2 */
3224         qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf);
3225         rc = qed_ops->ll2->start(qedf->cdev, &params);
3226         if (rc) {
3227                 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n");
3228                 goto err7;
3229         }
3230         set_bit(QEDF_LL2_STARTED, &qedf->flags);
3231
3232         /* Set initial FIP/FCoE VLAN to NULL */
3233         qedf->vlan_id = 0;
3234
3235         /*
3236          * No need to setup fcoe_ctlr or fc_lport objects during recovery since
3237          * they were not reaped during the unload process.
3238          */
3239         if (mode != QEDF_MODE_RECOVERY) {
3240                 /* Setup imbedded fcoe controller */
3241                 qedf_fcoe_ctlr_setup(qedf);
3242
3243                 /* Setup lport */
3244                 rc = qedf_lport_setup(qedf);
3245                 if (rc) {
3246                         QEDF_ERR(&(qedf->dbg_ctx),
3247                             "qedf_lport_setup failed.\n");
3248                         goto err7;
3249                 }
3250         }
3251
3252         sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no);
3253         qedf->timer_work_queue =
3254                 create_workqueue(host_buf);
3255         if (!qedf->timer_work_queue) {
3256                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer "
3257                           "workqueue.\n");
3258                 rc = -ENOMEM;
3259                 goto err7;
3260         }
3261
3262         /* DPC workqueue is not reaped during recovery unload */
3263         if (mode != QEDF_MODE_RECOVERY) {
3264                 sprintf(host_buf, "qedf_%u_dpc",
3265                     qedf->lport->host->host_no);
3266                 qedf->dpc_wq = create_workqueue(host_buf);
3267         }
3268
3269         /*
3270          * GRC dump and sysfs parameters are not reaped during the recovery
3271          * unload process.
3272          */
3273         if (mode != QEDF_MODE_RECOVERY) {
3274                 qedf->grcdump_size =
3275                     qed_ops->common->dbg_all_data_size(qedf->cdev);
3276                 if (qedf->grcdump_size) {
3277                         rc = qedf_alloc_grc_dump_buf(&qedf->grcdump,
3278                             qedf->grcdump_size);
3279                         if (rc) {
3280                                 QEDF_ERR(&(qedf->dbg_ctx),
3281                                     "GRC Dump buffer alloc failed.\n");
3282                                 qedf->grcdump = NULL;
3283                         }
3284
3285                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3286                             "grcdump: addr=%p, size=%u.\n",
3287                             qedf->grcdump, qedf->grcdump_size);
3288                 }
3289                 qedf_create_sysfs_ctx_attr(qedf);
3290
3291                 /* Initialize I/O tracing for this adapter */
3292                 spin_lock_init(&qedf->io_trace_lock);
3293                 qedf->io_trace_idx = 0;
3294         }
3295
3296         init_completion(&qedf->flogi_compl);
3297
3298         status = qed_ops->common->update_drv_state(qedf->cdev, true);
3299         if (status)
3300                 QEDF_ERR(&(qedf->dbg_ctx),
3301                         "Failed to send drv state to MFW.\n");
3302
3303         memset(&link_params, 0, sizeof(struct qed_link_params));
3304         link_params.link_up = true;
3305         status = qed_ops->common->set_link(qedf->cdev, &link_params);
3306         if (status)
3307                 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n");
3308
3309         /* Start/restart discovery */
3310         if (mode == QEDF_MODE_RECOVERY)
3311                 fcoe_ctlr_link_up(&qedf->ctlr);
3312         else
3313                 fc_fabric_login(lport);
3314
3315         /* All good */
3316         return 0;
3317
3318 err7:
3319         if (qedf->ll2_recv_wq)
3320                 destroy_workqueue(qedf->ll2_recv_wq);
3321         fc_remove_host(qedf->lport->host);
3322         scsi_remove_host(qedf->lport->host);
3323 #ifdef CONFIG_DEBUG_FS
3324         qedf_dbg_host_exit(&(qedf->dbg_ctx));
3325 #endif
3326 err6:
3327         qedf_cmd_mgr_free(qedf->cmd_mgr);
3328 err5:
3329         qed_ops->stop(qedf->cdev);
3330 err4:
3331         qedf_free_fcoe_pf_param(qedf);
3332         qedf_sync_free_irqs(qedf);
3333 err3:
3334         qed_ops->common->slowpath_stop(qedf->cdev);
3335 err2:
3336         qed_ops->common->remove(qedf->cdev);
3337 err1:
3338         scsi_host_put(lport->host);
3339 err0:
3340         return rc;
3341 }
3342
3343 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
3344 {
3345         return __qedf_probe(pdev, QEDF_MODE_NORMAL);
3346 }
3347
3348 static void __qedf_remove(struct pci_dev *pdev, int mode)
3349 {
3350         struct qedf_ctx *qedf;
3351         int rc;
3352
3353         if (!pdev) {
3354                 QEDF_ERR(NULL, "pdev is NULL.\n");
3355                 return;
3356         }
3357
3358         qedf = pci_get_drvdata(pdev);
3359
3360         /*
3361          * Prevent race where we're in board disable work and then try to
3362          * rmmod the module.
3363          */
3364         if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
3365                 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n");
3366                 return;
3367         }
3368
3369         if (mode != QEDF_MODE_RECOVERY)
3370                 set_bit(QEDF_UNLOADING, &qedf->flags);
3371
3372         /* Logoff the fabric to upload all connections */
3373         if (mode == QEDF_MODE_RECOVERY)
3374                 fcoe_ctlr_link_down(&qedf->ctlr);
3375         else
3376                 fc_fabric_logoff(qedf->lport);
3377         qedf_wait_for_upload(qedf);
3378
3379 #ifdef CONFIG_DEBUG_FS
3380         qedf_dbg_host_exit(&(qedf->dbg_ctx));
3381 #endif
3382
3383         /* Stop any link update handling */
3384         cancel_delayed_work_sync(&qedf->link_update);
3385         destroy_workqueue(qedf->link_update_wq);
3386         qedf->link_update_wq = NULL;
3387
3388         if (qedf->timer_work_queue)
3389                 destroy_workqueue(qedf->timer_work_queue);
3390
3391         /* Stop Light L2 */
3392         clear_bit(QEDF_LL2_STARTED, &qedf->flags);
3393         qed_ops->ll2->stop(qedf->cdev);
3394         if (qedf->ll2_recv_wq)
3395                 destroy_workqueue(qedf->ll2_recv_wq);
3396
3397         /* Stop fastpath */
3398         qedf_sync_free_irqs(qedf);
3399         qedf_destroy_sb(qedf);
3400
3401         /*
3402          * During recovery don't destroy OS constructs that represent the
3403          * physical port.
3404          */
3405         if (mode != QEDF_MODE_RECOVERY) {
3406                 qedf_free_grc_dump_buf(&qedf->grcdump);
3407                 qedf_remove_sysfs_ctx_attr(qedf);
3408
3409                 /* Remove all SCSI/libfc/libfcoe structures */
3410                 fcoe_ctlr_destroy(&qedf->ctlr);
3411                 fc_lport_destroy(qedf->lport);
3412                 fc_remove_host(qedf->lport->host);
3413                 scsi_remove_host(qedf->lport->host);
3414         }
3415
3416         qedf_cmd_mgr_free(qedf->cmd_mgr);
3417
3418         if (mode != QEDF_MODE_RECOVERY) {
3419                 fc_exch_mgr_free(qedf->lport);
3420                 fc_lport_free_stats(qedf->lport);
3421
3422                 /* Wait for all vports to be reaped */
3423                 qedf_wait_for_vport_destroy(qedf);
3424         }
3425
3426         /*
3427          * Now that all connections have been uploaded we can stop the
3428          * rest of the qed operations
3429          */
3430         qed_ops->stop(qedf->cdev);
3431
3432         if (mode != QEDF_MODE_RECOVERY) {
3433                 if (qedf->dpc_wq) {
3434                         /* Stop general DPC handling */
3435                         destroy_workqueue(qedf->dpc_wq);
3436                         qedf->dpc_wq = NULL;
3437                 }
3438         }
3439
3440         /* Final shutdown for the board */
3441         qedf_free_fcoe_pf_param(qedf);
3442         if (mode != QEDF_MODE_RECOVERY) {
3443                 qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3444                 pci_set_drvdata(pdev, NULL);
3445         }
3446
3447         rc = qed_ops->common->update_drv_state(qedf->cdev, false);
3448         if (rc)
3449                 QEDF_ERR(&(qedf->dbg_ctx),
3450                         "Failed to send drv state to MFW.\n");
3451
3452         qed_ops->common->slowpath_stop(qedf->cdev);
3453         qed_ops->common->remove(qedf->cdev);
3454
3455         mempool_destroy(qedf->io_mempool);
3456
3457         /* Only reap the Scsi_host on a real removal */
3458         if (mode != QEDF_MODE_RECOVERY)
3459                 scsi_host_put(qedf->lport->host);
3460 }
3461
3462 static void qedf_remove(struct pci_dev *pdev)
3463 {
3464         /* Check to make sure this function wasn't already disabled */
3465         if (!atomic_read(&pdev->enable_cnt))
3466                 return;
3467
3468         __qedf_remove(pdev, QEDF_MODE_NORMAL);
3469 }
3470
3471 void qedf_wq_grcdump(struct work_struct *work)
3472 {
3473         struct qedf_ctx *qedf =
3474             container_of(work, struct qedf_ctx, grcdump_work.work);
3475
3476         QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n");
3477         qedf_capture_grc_dump(qedf);
3478 }
3479
3480 /*
3481  * Protocol TLV handler
3482  */
3483 void qedf_get_protocol_tlv_data(void *dev, void *data)
3484 {
3485         struct qedf_ctx *qedf = dev;
3486         struct qed_mfw_tlv_fcoe *fcoe = data;
3487         struct fc_lport *lport = qedf->lport;
3488         struct Scsi_Host *host = lport->host;
3489         struct fc_host_attrs *fc_host = shost_to_fc_host(host);
3490         struct fc_host_statistics *hst;
3491
3492         /* Force a refresh of the fc_host stats including offload stats */
3493         hst = qedf_fc_get_host_stats(host);
3494
3495         fcoe->qos_pri_set = true;
3496         fcoe->qos_pri = 3; /* Hard coded to 3 in driver */
3497
3498         fcoe->ra_tov_set = true;
3499         fcoe->ra_tov = lport->r_a_tov;
3500
3501         fcoe->ed_tov_set = true;
3502         fcoe->ed_tov = lport->e_d_tov;
3503
3504         fcoe->npiv_state_set = true;
3505         fcoe->npiv_state = 1; /* NPIV always enabled */
3506
3507         fcoe->num_npiv_ids_set = true;
3508         fcoe->num_npiv_ids = fc_host->npiv_vports_inuse;
3509
3510         /* Certain attributes we only want to set if we've selected an FCF */
3511         if (qedf->ctlr.sel_fcf) {
3512                 fcoe->switch_name_set = true;
3513                 u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name);
3514         }
3515
3516         fcoe->port_state_set = true;
3517         /* For qedf we're either link down or fabric attach */
3518         if (lport->link_up)
3519                 fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC;
3520         else
3521                 fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE;
3522
3523         fcoe->link_failures_set = true;
3524         fcoe->link_failures = (u16)hst->link_failure_count;
3525
3526         fcoe->fcoe_txq_depth_set = true;
3527         fcoe->fcoe_rxq_depth_set = true;
3528         fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS;
3529         fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS;
3530
3531         fcoe->fcoe_rx_frames_set = true;
3532         fcoe->fcoe_rx_frames = hst->rx_frames;
3533
3534         fcoe->fcoe_tx_frames_set = true;
3535         fcoe->fcoe_tx_frames = hst->tx_frames;
3536
3537         fcoe->fcoe_rx_bytes_set = true;
3538         fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000;
3539
3540         fcoe->fcoe_tx_bytes_set = true;
3541         fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000;
3542
3543         fcoe->crc_count_set = true;
3544         fcoe->crc_count = hst->invalid_crc_count;
3545
3546         fcoe->tx_abts_set = true;
3547         fcoe->tx_abts = hst->fcp_packet_aborts;
3548
3549         fcoe->tx_lun_rst_set = true;
3550         fcoe->tx_lun_rst = qedf->lun_resets;
3551
3552         fcoe->abort_task_sets_set = true;
3553         fcoe->abort_task_sets = qedf->packet_aborts;
3554
3555         fcoe->scsi_busy_set = true;
3556         fcoe->scsi_busy = qedf->busy;
3557
3558         fcoe->scsi_tsk_full_set = true;
3559         fcoe->scsi_tsk_full = qedf->task_set_fulls;
3560 }
3561
3562 /* Generic TLV data callback */
3563 void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
3564 {
3565         struct qedf_ctx *qedf;
3566
3567         if (!dev) {
3568                 QEDF_INFO(NULL, QEDF_LOG_EVT,
3569                           "dev is NULL so ignoring get_generic_tlv_data request.\n");
3570                 return;
3571         }
3572         qedf = (struct qedf_ctx *)dev;
3573
3574         memset(data, 0, sizeof(struct qed_generic_tlvs));
3575         ether_addr_copy(data->mac[0], qedf->mac);
3576 }
3577
3578 /*
3579  * Module Init/Remove
3580  */
3581
3582 static int __init qedf_init(void)
3583 {
3584         int ret;
3585
3586         /* If debug=1 passed, set the default log mask */
3587         if (qedf_debug == QEDF_LOG_DEFAULT)
3588                 qedf_debug = QEDF_DEFAULT_LOG_MASK;
3589
3590         /*
3591          * Check that default prio for FIP/FCoE traffic is between 0..7 if a
3592          * value has been set
3593          */
3594         if (qedf_default_prio > -1)
3595                 if (qedf_default_prio > 7) {
3596                         qedf_default_prio = QEDF_DEFAULT_PRIO;
3597                         QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n",
3598                             QEDF_DEFAULT_PRIO);
3599                 }
3600
3601         /* Print driver banner */
3602         QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR,
3603                    QEDF_VERSION);
3604
3605         /* Create kmem_cache for qedf_io_work structs */
3606         qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache",
3607             sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL);
3608         if (qedf_io_work_cache == NULL) {
3609                 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n");
3610                 goto err1;
3611         }
3612         QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n",
3613             qedf_io_work_cache);
3614
3615         qed_ops = qed_get_fcoe_ops();
3616         if (!qed_ops) {
3617                 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n");
3618                 goto err1;
3619         }
3620
3621 #ifdef CONFIG_DEBUG_FS
3622         qedf_dbg_init("qedf");
3623 #endif
3624
3625         qedf_fc_transport_template =
3626             fc_attach_transport(&qedf_fc_transport_fn);
3627         if (!qedf_fc_transport_template) {
3628                 QEDF_ERR(NULL, "Could not register with FC transport\n");
3629                 goto err2;
3630         }
3631
3632         qedf_fc_vport_transport_template =
3633                 fc_attach_transport(&qedf_fc_vport_transport_fn);
3634         if (!qedf_fc_vport_transport_template) {
3635                 QEDF_ERR(NULL, "Could not register vport template with FC "
3636                           "transport\n");
3637                 goto err3;
3638         }
3639
3640         qedf_io_wq = create_workqueue("qedf_io_wq");
3641         if (!qedf_io_wq) {
3642                 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n");
3643                 goto err4;
3644         }
3645
3646         qedf_cb_ops.get_login_failures = qedf_get_login_failures;
3647
3648         ret = pci_register_driver(&qedf_pci_driver);
3649         if (ret) {
3650                 QEDF_ERR(NULL, "Failed to register driver\n");
3651                 goto err5;
3652         }
3653
3654         return 0;
3655
3656 err5:
3657         destroy_workqueue(qedf_io_wq);
3658 err4:
3659         fc_release_transport(qedf_fc_vport_transport_template);
3660 err3:
3661         fc_release_transport(qedf_fc_transport_template);
3662 err2:
3663 #ifdef CONFIG_DEBUG_FS
3664         qedf_dbg_exit();
3665 #endif
3666         qed_put_fcoe_ops();
3667 err1:
3668         return -EINVAL;
3669 }
3670
3671 static void __exit qedf_cleanup(void)
3672 {
3673         pci_unregister_driver(&qedf_pci_driver);
3674
3675         destroy_workqueue(qedf_io_wq);
3676
3677         fc_release_transport(qedf_fc_vport_transport_template);
3678         fc_release_transport(qedf_fc_transport_template);
3679 #ifdef CONFIG_DEBUG_FS
3680         qedf_dbg_exit();
3681 #endif
3682         qed_put_fcoe_ops();
3683
3684         kmem_cache_destroy(qedf_io_work_cache);
3685 }
3686
3687 MODULE_LICENSE("GPL");
3688 MODULE_DESCRIPTION("QLogic QEDF 25/40/50/100Gb FCoE Driver");
3689 MODULE_AUTHOR("QLogic Corporation");
3690 MODULE_VERSION(QEDF_VERSION);
3691 module_init(qedf_init);
3692 module_exit(qedf_cleanup);