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         while (qedf->fipvlan_retries--) {
 128                 /* This is to catch if link goes down during fipvlan retries */
 129                 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
 130                         QEDF_ERR(&qedf->dbg_ctx, "Link not up.\n");
 131                         return false;
 132                 }
 133
 134                 if (qedf->vlan_id > 0)
 135                         return true;
 136
 137                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 138                            "Retry %d.\n", qedf->fipvlan_retries);
 139                 init_completion(&qedf->fipvlan_compl);
 140                 qedf_fcoe_send_vlan_req(qedf);
 141                 rc = wait_for_completion_timeout(&qedf->fipvlan_compl,
 142                     1 * HZ);
 143                 if (rc > 0 &&
 144                     (atomic_read(&qedf->link_state) == QEDF_LINK_UP)) {
 145                         fcoe_ctlr_link_up(&qedf->ctlr);
 146                         return true;
 147                 }
 148         }
 149
 150         return false;
 151 }
 152
 153 static void qedf_handle_link_update(struct work_struct *work)
 154 {
 155         struct qedf_ctx *qedf =
 156             container_of(work, struct qedf_ctx, link_update.work);
 157         int rc;
 158
 159         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Entered.\n");
 160
 161         if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
 162                 rc = qedf_initiate_fipvlan_req(qedf);
 163                 if (rc)
 164                         return;
 165
 166                 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
 167                         qedf->vlan_id = 0;
 168                         return;
 169                 }
 170
 171                 /*
 172                  * If we get here then we never received a repsonse to our
 173                  * fip vlan request so set the vlan_id to the default and
 174                  * tell FCoE that the link is up
 175                  */
 176                 QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN "
 177                            "response, falling back to default VLAN %d.\n",
 178                            qedf_fallback_vlan);
 179                 qedf_set_vlan_id(qedf, qedf_fallback_vlan);
 180
 181                 /*
 182                  * Zero out data_src_addr so we'll update it with the new
 183                  * lport port_id
 184                  */
 185                 eth_zero_addr(qedf->data_src_addr);
 186                 fcoe_ctlr_link_up(&qedf->ctlr);
 187         } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
 188                 /*
 189                  * If we hit here and link_down_tmo_valid is still 1 it means
 190                  * that link_down_tmo timed out so set it to 0 to make sure any
 191                  * other readers have accurate state.
 192                  */
 193                 atomic_set(&qedf->link_down_tmo_valid, 0);
 194                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 195                     "Calling fcoe_ctlr_link_down().\n");
 196                 fcoe_ctlr_link_down(&qedf->ctlr);
 197                 qedf_wait_for_upload(qedf);
 198                 /* Reset the number of FIP VLAN retries */
 199                 qedf->fipvlan_retries = qedf_fipvlan_retries;
 200         }
 201 }
 202
 203 #define QEDF_FCOE_MAC_METHOD_GRANGED_MAC                1
 204 #define QEDF_FCOE_MAC_METHOD_FCF_MAP                    2
 205 #define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC               3
 206 static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp)
 207 {
 208         u8 *granted_mac;
 209         struct fc_frame_header *fh = fc_frame_header_get(fp);
 210         u8 fc_map[3];
 211         int method = 0;
 212
 213         /* Get granted MAC address from FIP FLOGI payload */
 214         granted_mac = fr_cb(fp)->granted_mac;
 215
 216         /*
 217          * We set the source MAC for FCoE traffic based on the Granted MAC
 218          * address from the switch.
 219          *
 220          * If granted_mac is non-zero, we used that.
 221          * If the granted_mac is zeroed out, created the FCoE MAC based on
 222          * the sel_fcf->fc_map and the d_id fo the FLOGI frame.
 223          * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the
 224          * d_id of the FLOGI frame.
 225          */
 226         if (!is_zero_ether_addr(granted_mac)) {
 227                 ether_addr_copy(qedf->data_src_addr, granted_mac);
 228                 method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC;
 229         } else if (qedf->ctlr.sel_fcf->fc_map != 0) {
 230                 hton24(fc_map, qedf->ctlr.sel_fcf->fc_map);
 231                 qedf->data_src_addr[0] = fc_map[0];
 232                 qedf->data_src_addr[1] = fc_map[1];
 233                 qedf->data_src_addr[2] = fc_map[2];
 234                 qedf->data_src_addr[3] = fh->fh_d_id[0];
 235                 qedf->data_src_addr[4] = fh->fh_d_id[1];
 236                 qedf->data_src_addr[5] = fh->fh_d_id[2];
 237                 method = QEDF_FCOE_MAC_METHOD_FCF_MAP;
 238         } else {
 239                 fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id);
 240                 method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC;
 241         }
 242
 243         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 244             "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method);
 245 }
 246
 247 static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp,
 248         void *arg)
 249 {
 250         struct fc_exch *exch = fc_seq_exch(seq);
 251         struct fc_lport *lport = exch->lp;
 252         struct qedf_ctx *qedf = lport_priv(lport);
 253
 254         if (!qedf) {
 255                 QEDF_ERR(NULL, "qedf is NULL.\n");
 256                 return;
 257         }
 258
 259         /*
 260          * If ERR_PTR is set then don't try to stat anything as it will cause
 261          * a crash when we access fp.
 262          */
 263         if (IS_ERR(fp)) {
 264                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
 265                     "fp has IS_ERR() set.\n");
 266                 goto skip_stat;
 267         }
 268
 269         /* Log stats for FLOGI reject */
 270         if (fc_frame_payload_op(fp) == ELS_LS_RJT)
 271                 qedf->flogi_failed++;
 272         else if (fc_frame_payload_op(fp) == ELS_LS_ACC) {
 273                 /* Set the source MAC we will use for FCoE traffic */
 274                 qedf_set_data_src_addr(qedf, fp);
 275         }
 276
 277         /* Complete flogi_compl so we can proceed to sending ADISCs */
 278         complete(&qedf->flogi_compl);
 279
 280 skip_stat:
 281         /* Report response to libfc */
 282         fc_lport_flogi_resp(seq, fp, lport);
 283 }
 284
 285 static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did,
 286         struct fc_frame *fp, unsigned int op,
 287         void (*resp)(struct fc_seq *,
 288         struct fc_frame *,
 289         void *),
 290         void *arg, u32 timeout)
 291 {
 292         struct qedf_ctx *qedf = lport_priv(lport);
 293
 294         /*
 295          * Intercept FLOGI for statistic purposes. Note we use the resp
 296          * callback to tell if this is really a flogi.
 297          */
 298         if (resp == fc_lport_flogi_resp) {
 299                 qedf->flogi_cnt++;
 300                 return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp,
 301                     arg, timeout);
 302         }
 303
 304         return fc_elsct_send(lport, did, fp, op, resp, arg, timeout);
 305 }
 306
 307 int qedf_send_flogi(struct qedf_ctx *qedf)
 308 {
 309         struct fc_lport *lport;
 310         struct fc_frame *fp;
 311
 312         lport = qedf->lport;
 313
 314         if (!lport->tt.elsct_send)
 315                 return -EINVAL;
 316
 317         fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi));
 318         if (!fp) {
 319                 QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n");
 320                 return -ENOMEM;
 321         }
 322
 323         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
 324             "Sending FLOGI to reestablish session with switch.\n");
 325         lport->tt.elsct_send(lport, FC_FID_FLOGI, fp,
 326             ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov);
 327
 328         init_completion(&qedf->flogi_compl);
 329
 330         return 0;
 331 }
 332
 333 struct qedf_tmp_rdata_item {
 334         struct fc_rport_priv *rdata;
 335         struct list_head list;
 336 };
 337
 338 /*
 339  * This function is called if link_down_tmo is in use.  If we get a link up and
 340  * link_down_tmo has not expired then use just FLOGI/ADISC to recover our
 341  * sessions with targets.  Otherwise, just call fcoe_ctlr_link_up().
 342  */
 343 static void qedf_link_recovery(struct work_struct *work)
 344 {
 345         struct qedf_ctx *qedf =
 346             container_of(work, struct qedf_ctx, link_recovery.work);
 347         struct qedf_rport *fcport;
 348         struct fc_rport_priv *rdata;
 349         struct qedf_tmp_rdata_item *rdata_item, *tmp_rdata_item;
 350         bool rc;
 351         int retries = 30;
 352         int rval, i;
 353         struct list_head rdata_login_list;
 354
 355         INIT_LIST_HEAD(&rdata_login_list);
 356
 357         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 358             "Link down tmo did not expire.\n");
 359
 360         /*
 361          * Essentially reset the fcoe_ctlr here without affecting the state
 362          * of the libfc structs.
 363          */
 364         qedf->ctlr.state = FIP_ST_LINK_WAIT;
 365         fcoe_ctlr_link_down(&qedf->ctlr);
 366
 367         /*
 368          * Bring the link up before we send the fipvlan request so libfcoe
 369          * can select a new fcf in parallel
 370          */
 371         fcoe_ctlr_link_up(&qedf->ctlr);
 372
 373         /* Since the link when down and up to verify which vlan we're on */
 374         qedf->fipvlan_retries = qedf_fipvlan_retries;
 375         rc = qedf_initiate_fipvlan_req(qedf);
 376         /* If getting the VLAN fails, set the VLAN to the fallback one */
 377         if (!rc)
 378                 qedf_set_vlan_id(qedf, qedf_fallback_vlan);
 379
 380         /*
 381          * We need to wait for an FCF to be selected due to the
 382          * fcoe_ctlr_link_up other the FLOGI will be rejected.
 383          */
 384         while (retries > 0) {
 385                 if (qedf->ctlr.sel_fcf) {
 386                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 387                             "FCF reselected, proceeding with FLOGI.\n");
 388                         break;
 389                 }
 390                 msleep(500);
 391                 retries--;
 392         }
 393
 394         if (retries < 1) {
 395                 QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for "
 396                     "FCF selection.\n");
 397                 return;
 398         }
 399
 400         rval = qedf_send_flogi(qedf);
 401         if (rval)
 402                 return;
 403
 404         /* Wait for FLOGI completion before proceeding with sending ADISCs */
 405         i = wait_for_completion_timeout(&qedf->flogi_compl,
 406             qedf->lport->r_a_tov);
 407         if (i == 0) {
 408                 QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n");
 409                 return;
 410         }
 411
 412         /*
 413          * Call lport->tt.rport_login which will cause libfc to send an
 414          * ADISC since the rport is in state ready.
 415          */
 416         rcu_read_lock();
 417         list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
 418                 rdata = fcport->rdata;
 419                 if (rdata == NULL)
 420                         continue;
 421                 rdata_item = kzalloc(sizeof(struct qedf_tmp_rdata_item),
 422                     GFP_ATOMIC);
 423                 if (!rdata_item)
 424                         continue;
 425                 if (kref_get_unless_zero(&rdata->kref)) {
 426                         rdata_item->rdata = rdata;
 427                         list_add(&rdata_item->list, &rdata_login_list);
 428                 } else
 429                         kfree(rdata_item);
 430         }
 431         rcu_read_unlock();
 432         /*
 433          * Do the fc_rport_login outside of the rcu lock so we don't take a
 434          * mutex in an atomic context.
 435          */
 436         list_for_each_entry_safe(rdata_item, tmp_rdata_item, &rdata_login_list,
 437             list) {
 438                 list_del(&rdata_item->list);
 439                 fc_rport_login(rdata_item->rdata);
 440                 kref_put(&rdata_item->rdata->kref, fc_rport_destroy);
 441                 kfree(rdata_item);
 442         }
 443 }
 444
 445 static void qedf_update_link_speed(struct qedf_ctx *qedf,
 446         struct qed_link_output *link)
 447 {
 448         struct fc_lport *lport = qedf->lport;
 449
 450         lport->link_speed = FC_PORTSPEED_UNKNOWN;
 451         lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN;
 452
 453         /* Set fc_host link speed */
 454         switch (link->speed) {
 455         case 10000:
 456                 lport->link_speed = FC_PORTSPEED_10GBIT;
 457                 break;
 458         case 25000:
 459                 lport->link_speed = FC_PORTSPEED_25GBIT;
 460                 break;
 461         case 40000:
 462                 lport->link_speed = FC_PORTSPEED_40GBIT;
 463                 break;
 464         case 50000:
 465                 lport->link_speed = FC_PORTSPEED_50GBIT;
 466                 break;
 467         case 100000:
 468                 lport->link_speed = FC_PORTSPEED_100GBIT;
 469                 break;
 470         default:
 471                 lport->link_speed = FC_PORTSPEED_UNKNOWN;
 472                 break;
 473         }
 474
 475         /*
 476          * Set supported link speed by querying the supported
 477          * capabilities of the link.
 478          */
 479         if (link->supported_caps & SUPPORTED_10000baseKR_Full)
 480                 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT;
 481         if (link->supported_caps & SUPPORTED_25000baseKR_Full)
 482                 lport->link_supported_speeds |= FC_PORTSPEED_25GBIT;
 483         if (link->supported_caps & SUPPORTED_40000baseLR4_Full)
 484                 lport->link_supported_speeds |= FC_PORTSPEED_40GBIT;
 485         if (link->supported_caps & SUPPORTED_50000baseKR2_Full)
 486                 lport->link_supported_speeds |= FC_PORTSPEED_50GBIT;
 487         if (link->supported_caps & SUPPORTED_100000baseKR4_Full)
 488                 lport->link_supported_speeds |= FC_PORTSPEED_100GBIT;
 489         fc_host_supported_speeds(lport->host) = lport->link_supported_speeds;
 490 }
 491
 492 static void qedf_link_update(void *dev, struct qed_link_output *link)
 493 {
 494         struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
 495
 496         if (link->link_up) {
 497                 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
 498                         QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC,
 499                             "Ignoring link up event as link is already up.\n");
 500                         return;
 501                 }
 502                 QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n",
 503                     link->speed / 1000);
 504
 505                 /* Cancel any pending link down work */
 506                 cancel_delayed_work(&qedf->link_update);
 507
 508                 atomic_set(&qedf->link_state, QEDF_LINK_UP);
 509                 qedf_update_link_speed(qedf, link);
 510
 511                 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE ||
 512                     qedf_dcbx_no_wait) {
 513                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 514                              "DCBx done.\n");
 515                         if (atomic_read(&qedf->link_down_tmo_valid) > 0)
 516                                 queue_delayed_work(qedf->link_update_wq,
 517                                     &qedf->link_recovery, 0);
 518                         else
 519                                 queue_delayed_work(qedf->link_update_wq,
 520                                     &qedf->link_update, 0);
 521                         atomic_set(&qedf->link_down_tmo_valid, 0);
 522                 }
 523
 524         } else {
 525                 QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n");
 526
 527                 atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
 528                 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
 529                 /*
 530                  * Flag that we're waiting for the link to come back up before
 531                  * informing the fcoe layer of the event.
 532                  */
 533                 if (qedf_link_down_tmo > 0) {
 534                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 535                             "Starting link down tmo.\n");
 536                         atomic_set(&qedf->link_down_tmo_valid, 1);
 537                 }
 538                 qedf->vlan_id = 0;
 539                 qedf_update_link_speed(qedf, link);
 540                 queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 541                     qedf_link_down_tmo * HZ);
 542         }
 543 }
 544
 545
 546 static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type)
 547 {
 548         struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
 549         u8 tmp_prio;
 550
 551         QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe "
 552             "prio=%d.\n", get->operational.valid, get->operational.enabled,
 553             get->operational.app_prio.fcoe);
 554
 555         if (get->operational.enabled && get->operational.valid) {
 556                 /* If DCBX was already negotiated on link up then just exit */
 557                 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) {
 558                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 559                             "DCBX already set on link up.\n");
 560                         return;
 561                 }
 562
 563                 atomic_set(&qedf->dcbx, QEDF_DCBX_DONE);
 564
 565                 /*
 566                  * Set the 8021q priority in the following manner:
 567                  *
 568                  * 1. If a modparam is set use that
 569                  * 2. If the value is not between 0..7 use the default
 570                  * 3. Use the priority we get from the DCBX app tag
 571                  */
 572                 tmp_prio = get->operational.app_prio.fcoe;
 573                 if (qedf_default_prio > -1)
 574                         qedf->prio = qedf_default_prio;
 575                 else if (tmp_prio < 0 || tmp_prio > 7) {
 576                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 577                             "FIP/FCoE prio %d out of range, setting to %d.\n",
 578                             tmp_prio, QEDF_DEFAULT_PRIO);
 579                         qedf->prio = QEDF_DEFAULT_PRIO;
 580                 } else
 581                         qedf->prio = tmp_prio;
 582
 583                 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP &&
 584                     !qedf_dcbx_no_wait) {
 585                         if (atomic_read(&qedf->link_down_tmo_valid) > 0)
 586                                 queue_delayed_work(qedf->link_update_wq,
 587                                     &qedf->link_recovery, 0);
 588                         else
 589                                 queue_delayed_work(qedf->link_update_wq,
 590                                     &qedf->link_update, 0);
 591                         atomic_set(&qedf->link_down_tmo_valid, 0);
 592                 }
 593         }
 594
 595 }
 596
 597 static u32 qedf_get_login_failures(void *cookie)
 598 {
 599         struct qedf_ctx *qedf;
 600
 601         qedf = (struct qedf_ctx *)cookie;
 602         return qedf->flogi_failed;
 603 }
 604
 605 static struct qed_fcoe_cb_ops qedf_cb_ops = {
 606         {
 607                 .link_update = qedf_link_update,
 608                 .dcbx_aen = qedf_dcbx_handler,
 609                 .get_generic_tlv_data = qedf_get_generic_tlv_data,
 610                 .get_protocol_tlv_data = qedf_get_protocol_tlv_data,
 611         }
 612 };
 613
 614 /*
 615  * Various transport templates.
 616  */
 617
 618 static struct scsi_transport_template *qedf_fc_transport_template;
 619 static struct scsi_transport_template *qedf_fc_vport_transport_template;
 620
 621 /*
 622  * SCSI EH handlers
 623  */
 624 static int qedf_eh_abort(struct scsi_cmnd *sc_cmd)
 625 {
 626         struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
 627         struct fc_lport *lport;
 628         struct qedf_ctx *qedf;
 629         struct qedf_ioreq *io_req;
 630         struct fc_rport_libfc_priv *rp = rport->dd_data;
 631         struct fc_rport_priv *rdata;
 632         struct qedf_rport *fcport = NULL;
 633         int rc = FAILED;
 634         int wait_count = 100;
 635         int refcount = 0;
 636         int rval;
 637         int got_ref = 0;
 638
 639         lport = shost_priv(sc_cmd->device->host);
 640         qedf = (struct qedf_ctx *)lport_priv(lport);
 641
 642         /* rport and tgt are allocated together, so tgt should be non-NULL */
 643         fcport = (struct qedf_rport *)&rp[1];
 644         rdata = fcport->rdata;
 645         if (!rdata || !kref_get_unless_zero(&rdata->kref)) {
 646                 QEDF_ERR(&qedf->dbg_ctx, "stale rport, sc_cmd=%p\n", sc_cmd);
 647                 rc = 1;
 648                 goto out;
 649         }
 650
 651
 652         io_req = (struct qedf_ioreq *)sc_cmd->SCp.ptr;
 653         if (!io_req) {
 654                 QEDF_ERR(&qedf->dbg_ctx,
 655                          "sc_cmd not queued with lld, sc_cmd=%p op=0x%02x, port_id=%06x\n",
 656                          sc_cmd, sc_cmd->cmnd[0],
 657                          rdata->ids.port_id);
 658                 rc = SUCCESS;
 659                 goto drop_rdata_kref;
 660         }
 661
 662         rval = kref_get_unless_zero(&io_req->refcount); /* ID: 005 */
 663         if (rval)
 664                 got_ref = 1;
 665
 666         /* If we got a valid io_req, confirm it belongs to this sc_cmd. */
 667         if (!rval || io_req->sc_cmd != sc_cmd) {
 668                 QEDF_ERR(&qedf->dbg_ctx,
 669                          "Freed/Incorrect io_req, io_req->sc_cmd=%p, sc_cmd=%p, port_id=%06x, bailing out.\n",
 670                          io_req->sc_cmd, sc_cmd, rdata->ids.port_id);
 671
 672                 goto drop_rdata_kref;
 673         }
 674
 675         if (fc_remote_port_chkready(rport)) {
 676                 refcount = kref_read(&io_req->refcount);
 677                 QEDF_ERR(&qedf->dbg_ctx,
 678                          "rport not ready, io_req=%p, xid=0x%x sc_cmd=%p op=0x%02x, refcount=%d, port_id=%06x\n",
 679                          io_req, io_req->xid, sc_cmd, sc_cmd->cmnd[0],
 680                          refcount, rdata->ids.port_id);
 681
 682                 goto drop_rdata_kref;
 683         }
 684
 685         rc = fc_block_scsi_eh(sc_cmd);
 686         if (rc)
 687                 goto drop_rdata_kref;
 688
 689         if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) {
 690                 QEDF_ERR(&qedf->dbg_ctx,
 691                          "Connection uploading, xid=0x%x., port_id=%06x\n",
 692                          io_req->xid, rdata->ids.port_id);
 693                 while (io_req->sc_cmd && (wait_count != 0)) {
 694                         msleep(100);
 695                         wait_count--;
 696                 }
 697                 if (wait_count) {
 698                         QEDF_ERR(&qedf->dbg_ctx, "ABTS succeeded\n");
 699                         rc = SUCCESS;
 700                 } else {
 701                         QEDF_ERR(&qedf->dbg_ctx, "ABTS failed\n");
 702                         rc = FAILED;
 703                 }
 704                 goto drop_rdata_kref;
 705         }
 706
 707         if (lport->state != LPORT_ST_READY || !(lport->link_up)) {
 708                 QEDF_ERR(&qedf->dbg_ctx, "link not ready.\n");
 709                 goto drop_rdata_kref;
 710         }
 711
 712         QEDF_ERR(&qedf->dbg_ctx,
 713                  "Aborting io_req=%p sc_cmd=%p xid=0x%x fp_idx=%d, port_id=%06x.\n",
 714                  io_req, sc_cmd, io_req->xid, io_req->fp_idx,
 715                  rdata->ids.port_id);
 716
 717         if (qedf->stop_io_on_error) {
 718                 qedf_stop_all_io(qedf);
 719                 rc = SUCCESS;
 720                 goto drop_rdata_kref;
 721         }
 722
 723         init_completion(&io_req->abts_done);
 724         rval = qedf_initiate_abts(io_req, true);
 725         if (rval) {
 726                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n");
 727                 /*
 728                  * If we fail to queue the ABTS then return this command to
 729                  * the SCSI layer as it will own and free the xid
 730                  */
 731                 rc = SUCCESS;
 732                 qedf_scsi_done(qedf, io_req, DID_ERROR);
 733                 goto drop_rdata_kref;
 734         }
 735
 736         wait_for_completion(&io_req->abts_done);
 737
 738         if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS ||
 739             io_req->event == QEDF_IOREQ_EV_ABORT_FAILED ||
 740             io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) {
 741                 /*
 742                  * If we get a reponse to the abort this is success from
 743                  * the perspective that all references to the command have
 744                  * been removed from the driver and firmware
 745                  */
 746                 rc = SUCCESS;
 747         } else {
 748                 /* If the abort and cleanup failed then return a failure */
 749                 rc = FAILED;
 750         }
 751
 752         if (rc == SUCCESS)
 753                 QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n",
 754                           io_req->xid);
 755         else
 756                 QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n",
 757                           io_req->xid);
 758
 759 drop_rdata_kref:
 760         kref_put(&rdata->kref, fc_rport_destroy);
 761 out:
 762         if (got_ref)
 763                 kref_put(&io_req->refcount, qedf_release_cmd);
 764         return rc;
 765 }
 766
 767 static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd)
 768 {
 769         QEDF_ERR(NULL, "%d:0:%d:%lld: TARGET RESET Issued...",
 770                  sc_cmd->device->host->host_no, sc_cmd->device->id,
 771                  sc_cmd->device->lun);
 772         return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET);
 773 }
 774
 775 static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd)
 776 {
 777         QEDF_ERR(NULL, "%d:0:%d:%lld: LUN RESET Issued... ",
 778                  sc_cmd->device->host->host_no, sc_cmd->device->id,
 779                  sc_cmd->device->lun);
 780         return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET);
 781 }
 782
 783 void qedf_wait_for_upload(struct qedf_ctx *qedf)
 784 {
 785         while (1) {
 786                 if (atomic_read(&qedf->num_offloads))
 787                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 788                             "Waiting for all uploads to complete.\n");
 789                 else
 790                         break;
 791                 msleep(500);
 792         }
 793 }
 794
 795 /* Performs soft reset of qedf_ctx by simulating a link down/up */
 796 static void qedf_ctx_soft_reset(struct fc_lport *lport)
 797 {
 798         struct qedf_ctx *qedf;
 799
 800         if (lport->vport) {
 801                 QEDF_ERR(NULL, "Cannot issue host reset on NPIV port.\n");
 802                 return;
 803         }
 804
 805         qedf = lport_priv(lport);
 806
 807         /* For host reset, essentially do a soft link up/down */
 808         atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
 809         queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 810             0);
 811         qedf_wait_for_upload(qedf);
 812         atomic_set(&qedf->link_state, QEDF_LINK_UP);
 813         qedf->vlan_id  = 0;
 814         queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 815             0);
 816 }
 817
 818 /* Reset the host by gracefully logging out and then logging back in */
 819 static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd)
 820 {
 821         struct fc_lport *lport;
 822         struct qedf_ctx *qedf;
 823
 824         lport = shost_priv(sc_cmd->device->host);
 825         qedf = lport_priv(lport);
 826
 827         if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN ||
 828             test_bit(QEDF_UNLOADING, &qedf->flags))
 829                 return FAILED;
 830
 831         QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued...");
 832
 833         qedf_ctx_soft_reset(lport);
 834
 835         return SUCCESS;
 836 }
 837
 838 static int qedf_slave_configure(struct scsi_device *sdev)
 839 {
 840         if (qedf_queue_depth) {
 841                 scsi_change_queue_depth(sdev, qedf_queue_depth);
 842         }
 843
 844         return 0;
 845 }
 846
 847 static struct scsi_host_template qedf_host_template = {
 848         .module         = THIS_MODULE,
 849         .name           = QEDF_MODULE_NAME,
 850         .this_id        = -1,
 851         .cmd_per_lun    = 32,
 852         .max_sectors    = 0xffff,
 853         .queuecommand   = qedf_queuecommand,
 854         .shost_attrs    = qedf_host_attrs,
 855         .eh_abort_handler       = qedf_eh_abort,
 856         .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */
 857         .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */
 858         .eh_host_reset_handler  = qedf_eh_host_reset,
 859         .slave_configure        = qedf_slave_configure,
 860         .dma_boundary = QED_HW_DMA_BOUNDARY,
 861         .sg_tablesize = QEDF_MAX_BDS_PER_CMD,
 862         .can_queue = FCOE_PARAMS_NUM_TASKS,
 863         .change_queue_depth = scsi_change_queue_depth,
 864 };
 865
 866 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen)
 867 {
 868         int rc;
 869
 870         spin_lock(&qedf_global_lock);
 871         rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global);
 872         spin_unlock(&qedf_global_lock);
 873
 874         return rc;
 875 }
 876
 877 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id)
 878 {
 879         struct qedf_rport *fcport;
 880         struct fc_rport_priv *rdata;
 881
 882         rcu_read_lock();
 883         list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
 884                 rdata = fcport->rdata;
 885                 if (rdata == NULL)
 886                         continue;
 887                 if (rdata->ids.port_id == port_id) {
 888                         rcu_read_unlock();
 889                         return fcport;
 890                 }
 891         }
 892         rcu_read_unlock();
 893
 894         /* Return NULL to caller to let them know fcport was not found */
 895         return NULL;
 896 }
 897
 898 /* Transmits an ELS frame over an offloaded session */
 899 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp)
 900 {
 901         struct fc_frame_header *fh;
 902         int rc = 0;
 903
 904         fh = fc_frame_header_get(fp);
 905         if ((fh->fh_type == FC_TYPE_ELS) &&
 906             (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
 907                 switch (fc_frame_payload_op(fp)) {
 908                 case ELS_ADISC:
 909                         qedf_send_adisc(fcport, fp);
 910                         rc = 1;
 911                         break;
 912                 }
 913         }
 914
 915         return rc;
 916 }
 917
 918 /**
 919  * qedf_xmit - qedf FCoE frame transmit function
 920  *
 921  */
 922 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp)
 923 {
 924         struct fc_lport         *base_lport;
 925         struct qedf_ctx         *qedf;
 926         struct ethhdr           *eh;
 927         struct fcoe_crc_eof     *cp;
 928         struct sk_buff          *skb;
 929         struct fc_frame_header  *fh;
 930         struct fcoe_hdr         *hp;
 931         u8                      sof, eof;
 932         u32                     crc;
 933         unsigned int            hlen, tlen, elen;
 934         int                     wlen;
 935         struct fc_stats         *stats;
 936         struct fc_lport *tmp_lport;
 937         struct fc_lport *vn_port = NULL;
 938         struct qedf_rport *fcport;
 939         int rc;
 940         u16 vlan_tci = 0;
 941
 942         qedf = (struct qedf_ctx *)lport_priv(lport);
 943
 944         fh = fc_frame_header_get(fp);
 945         skb = fp_skb(fp);
 946
 947         /* Filter out traffic to other NPIV ports on the same host */
 948         if (lport->vport)
 949                 base_lport = shost_priv(vport_to_shost(lport->vport));
 950         else
 951                 base_lport = lport;
 952
 953         /* Flag if the destination is the base port */
 954         if (base_lport->port_id == ntoh24(fh->fh_d_id)) {
 955                 vn_port = base_lport;
 956         } else {
 957                 /* Got through the list of vports attached to the base_lport
 958                  * and see if we have a match with the destination address.
 959                  */
 960                 list_for_each_entry(tmp_lport, &base_lport->vports, list) {
 961                         if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) {
 962                                 vn_port = tmp_lport;
 963                                 break;
 964                         }
 965                 }
 966         }
 967         if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) {
 968                 struct fc_rport_priv *rdata = NULL;
 969
 970                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
 971                     "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id));
 972                 kfree_skb(skb);
 973                 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id));
 974                 if (rdata) {
 975                         rdata->retries = lport->max_rport_retry_count;
 976                         kref_put(&rdata->kref, fc_rport_destroy);
 977                 }
 978                 return -EINVAL;
 979         }
 980         /* End NPIV filtering */
 981
 982         if (!qedf->ctlr.sel_fcf) {
 983                 kfree_skb(skb);
 984                 return 0;
 985         }
 986
 987         if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) {
 988                 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n");
 989                 kfree_skb(skb);
 990                 return 0;
 991         }
 992
 993         if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
 994                 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n");
 995                 kfree_skb(skb);
 996                 return 0;
 997         }
 998
 999         if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
1000                 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb))
1001                         return 0;
1002         }
1003
1004         /* Check to see if this needs to be sent on an offloaded session */
1005         fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
1006
1007         if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1008                 rc = qedf_xmit_l2_frame(fcport, fp);
1009                 /*
1010                  * If the frame was successfully sent over the middle path
1011                  * then do not try to also send it over the LL2 path
1012                  */
1013                 if (rc)
1014                         return 0;
1015         }
1016
1017         sof = fr_sof(fp);
1018         eof = fr_eof(fp);
1019
1020         elen = sizeof(struct ethhdr);
1021         hlen = sizeof(struct fcoe_hdr);
1022         tlen = sizeof(struct fcoe_crc_eof);
1023         wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
1024
1025         skb->ip_summed = CHECKSUM_NONE;
1026         crc = fcoe_fc_crc(fp);
1027
1028         /* copy port crc and eof to the skb buff */
1029         if (skb_is_nonlinear(skb)) {
1030                 skb_frag_t *frag;
1031
1032                 if (qedf_get_paged_crc_eof(skb, tlen)) {
1033                         kfree_skb(skb);
1034                         return -ENOMEM;
1035                 }
1036                 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
1037                 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset;
1038         } else {
1039                 cp = skb_put(skb, tlen);
1040         }
1041
1042         memset(cp, 0, sizeof(*cp));
1043         cp->fcoe_eof = eof;
1044         cp->fcoe_crc32 = cpu_to_le32(~crc);
1045         if (skb_is_nonlinear(skb)) {
1046                 kunmap_atomic(cp);
1047                 cp = NULL;
1048         }
1049
1050
1051         /* adjust skb network/transport offsets to match mac/fcoe/port */
1052         skb_push(skb, elen + hlen);
1053         skb_reset_mac_header(skb);
1054         skb_reset_network_header(skb);
1055         skb->mac_len = elen;
1056         skb->protocol = htons(ETH_P_FCOE);
1057
1058         /*
1059          * Add VLAN tag to non-offload FCoE frame based on current stored VLAN
1060          * for FIP/FCoE traffic.
1061          */
1062         __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id);
1063
1064         /* fill up mac and fcoe headers */
1065         eh = eth_hdr(skb);
1066         eh->h_proto = htons(ETH_P_FCOE);
1067         if (qedf->ctlr.map_dest)
1068                 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
1069         else
1070                 /* insert GW address */
1071                 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr);
1072
1073         /* Set the source MAC address */
1074         ether_addr_copy(eh->h_source, qedf->data_src_addr);
1075
1076         hp = (struct fcoe_hdr *)(eh + 1);
1077         memset(hp, 0, sizeof(*hp));
1078         if (FC_FCOE_VER)
1079                 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
1080         hp->fcoe_sof = sof;
1081
1082         /*update tx stats */
1083         stats = per_cpu_ptr(lport->stats, get_cpu());
1084         stats->TxFrames++;
1085         stats->TxWords += wlen;
1086         put_cpu();
1087
1088         /* Get VLAN ID from skb for printing purposes */
1089         __vlan_hwaccel_get_tag(skb, &vlan_tci);
1090
1091         /* send down to lld */
1092         fr_dev(fp) = lport;
1093         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: "
1094             "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n",
1095             ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type,
1096             vlan_tci);
1097         if (qedf_dump_frames)
1098                 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
1099                     1, skb->data, skb->len, false);
1100         qed_ops->ll2->start_xmit(qedf->cdev, skb, 0);
1101
1102         return 0;
1103 }
1104
1105 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1106 {
1107         int rval = 0;
1108         u32 *pbl;
1109         dma_addr_t page;
1110         int num_pages;
1111
1112         /* Calculate appropriate queue and PBL sizes */
1113         fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
1114         fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE);
1115         fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) *
1116             sizeof(void *);
1117         fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE;
1118
1119         fcport->sq = dma_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1120                                         &fcport->sq_dma, GFP_KERNEL);
1121         if (!fcport->sq) {
1122                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n");
1123                 rval = 1;
1124                 goto out;
1125         }
1126
1127         fcport->sq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
1128                                             fcport->sq_pbl_size,
1129                                             &fcport->sq_pbl_dma, GFP_KERNEL);
1130         if (!fcport->sq_pbl) {
1131                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n");
1132                 rval = 1;
1133                 goto out_free_sq;
1134         }
1135
1136         /* Create PBL */
1137         num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE;
1138         page = fcport->sq_dma;
1139         pbl = (u32 *)fcport->sq_pbl;
1140
1141         while (num_pages--) {
1142                 *pbl = U64_LO(page);
1143                 pbl++;
1144                 *pbl = U64_HI(page);
1145                 pbl++;
1146                 page += QEDF_PAGE_SIZE;
1147         }
1148
1149         return rval;
1150
1151 out_free_sq:
1152         dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq,
1153             fcport->sq_dma);
1154 out:
1155         return rval;
1156 }
1157
1158 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1159 {
1160         if (fcport->sq_pbl)
1161                 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size,
1162                     fcport->sq_pbl, fcport->sq_pbl_dma);
1163         if (fcport->sq)
1164                 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1165                     fcport->sq, fcport->sq_dma);
1166 }
1167
1168 static int qedf_offload_connection(struct qedf_ctx *qedf,
1169         struct qedf_rport *fcport)
1170 {
1171         struct qed_fcoe_params_offload conn_info;
1172         u32 port_id;
1173         int rval;
1174         uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe));
1175
1176         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection "
1177                    "portid=%06x.\n", fcport->rdata->ids.port_id);
1178         rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle,
1179             &fcport->fw_cid, &fcport->p_doorbell);
1180         if (rval) {
1181                 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection "
1182                            "for portid=%06x.\n", fcport->rdata->ids.port_id);
1183                 rval = 1; /* For some reason qed returns 0 on failure here */
1184                 goto out;
1185         }
1186
1187         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x "
1188                    "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id,
1189                    fcport->fw_cid, fcport->handle);
1190
1191         memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload));
1192
1193         /* Fill in the offload connection info */
1194         conn_info.sq_pbl_addr = fcport->sq_pbl_dma;
1195
1196         conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl);
1197         conn_info.sq_next_page_addr =
1198             (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8));
1199
1200         /* Need to use our FCoE MAC for the offload session */
1201         ether_addr_copy(conn_info.src_mac, qedf->data_src_addr);
1202
1203         ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr);
1204
1205         conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size;
1206         conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov / 20;
1207         conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */
1208         conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size;
1209
1210         /* Set VLAN data */
1211         conn_info.vlan_tag = qedf->vlan_id <<
1212             FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT;
1213         conn_info.vlan_tag |=
1214             qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT;
1215         conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK <<
1216             FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT);
1217
1218         /* Set host port source id */
1219         port_id = fc_host_port_id(qedf->lport->host);
1220         fcport->sid = port_id;
1221         conn_info.s_id.addr_hi = (port_id & 0x000000FF);
1222         conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1223         conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1224
1225         conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq;
1226
1227         /* Set remote port destination id */
1228         port_id = fcport->rdata->rport->port_id;
1229         conn_info.d_id.addr_hi = (port_id & 0x000000FF);
1230         conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1231         conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1232
1233         conn_info.def_q_idx = 0; /* Default index for send queue? */
1234
1235         /* Set FC-TAPE specific flags if needed */
1236         if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) {
1237                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN,
1238                     "Enable CONF, REC for portid=%06x.\n",
1239                     fcport->rdata->ids.port_id);
1240                 conn_info.flags |= 1 <<
1241                     FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT;
1242                 conn_info.flags |=
1243                     ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
1244                     FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT;
1245         }
1246
1247         rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info);
1248         if (rval) {
1249                 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection "
1250                            "for portid=%06x.\n", fcport->rdata->ids.port_id);
1251                 goto out_free_conn;
1252         } else
1253                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload "
1254                            "succeeded portid=%06x total_sqe=%d.\n",
1255                            fcport->rdata->ids.port_id, total_sqe);
1256
1257         spin_lock_init(&fcport->rport_lock);
1258         atomic_set(&fcport->free_sqes, total_sqe);
1259         return 0;
1260 out_free_conn:
1261         qed_ops->release_conn(qedf->cdev, fcport->handle);
1262 out:
1263         return rval;
1264 }
1265
1266 #define QEDF_TERM_BUFF_SIZE             10
1267 static void qedf_upload_connection(struct qedf_ctx *qedf,
1268         struct qedf_rport *fcport)
1269 {
1270         void *term_params;
1271         dma_addr_t term_params_dma;
1272
1273         /* Term params needs to be a DMA coherent buffer as qed shared the
1274          * physical DMA address with the firmware. The buffer may be used in
1275          * the receive path so we may eventually have to move this.
1276          */
1277         term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE,
1278                 &term_params_dma, GFP_KERNEL);
1279
1280         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection "
1281                    "port_id=%06x.\n", fcport->rdata->ids.port_id);
1282
1283         qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma);
1284         qed_ops->release_conn(qedf->cdev, fcport->handle);
1285
1286         dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params,
1287             term_params_dma);
1288 }
1289
1290 static void qedf_cleanup_fcport(struct qedf_ctx *qedf,
1291         struct qedf_rport *fcport)
1292 {
1293         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n",
1294             fcport->rdata->ids.port_id);
1295
1296         /* Flush any remaining i/o's before we upload the connection */
1297         qedf_flush_active_ios(fcport, -1);
1298
1299         if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags))
1300                 qedf_upload_connection(qedf, fcport);
1301         qedf_free_sq(qedf, fcport);
1302         fcport->rdata = NULL;
1303         fcport->qedf = NULL;
1304 }
1305
1306 /**
1307  * This event_callback is called after successful completion of libfc
1308  * initiated target login. qedf can proceed with initiating the session
1309  * establishment.
1310  */
1311 static void qedf_rport_event_handler(struct fc_lport *lport,
1312                                 struct fc_rport_priv *rdata,
1313                                 enum fc_rport_event event)
1314 {
1315         struct qedf_ctx *qedf = lport_priv(lport);
1316         struct fc_rport *rport = rdata->rport;
1317         struct fc_rport_libfc_priv *rp;
1318         struct qedf_rport *fcport;
1319         u32 port_id;
1320         int rval;
1321         unsigned long flags;
1322
1323         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, "
1324                    "port_id = 0x%x\n", event, rdata->ids.port_id);
1325
1326         switch (event) {
1327         case RPORT_EV_READY:
1328                 if (!rport) {
1329                         QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n");
1330                         break;
1331                 }
1332
1333                 rp = rport->dd_data;
1334                 fcport = (struct qedf_rport *)&rp[1];
1335                 fcport->qedf = qedf;
1336
1337                 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) {
1338                         QEDF_ERR(&(qedf->dbg_ctx), "Not offloading "
1339                             "portid=0x%x as max number of offloaded sessions "
1340                             "reached.\n", rdata->ids.port_id);
1341                         return;
1342                 }
1343
1344                 /*
1345                  * Don't try to offload the session again. Can happen when we
1346                  * get an ADISC
1347                  */
1348                 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1349                         QEDF_WARN(&(qedf->dbg_ctx), "Session already "
1350                                    "offloaded, portid=0x%x.\n",
1351                                    rdata->ids.port_id);
1352                         return;
1353                 }
1354
1355                 if (rport->port_id == FC_FID_DIR_SERV) {
1356                         /*
1357                          * qedf_rport structure doesn't exist for
1358                          * directory server.
1359                          * We should not come here, as lport will
1360                          * take care of fabric login
1361                          */
1362                         QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not "
1363                             "exist for dir server port_id=%x\n",
1364                             rdata->ids.port_id);
1365                         break;
1366                 }
1367
1368                 if (rdata->spp_type != FC_TYPE_FCP) {
1369                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1370                             "Not offloading since spp type isn't FCP\n");
1371                         break;
1372                 }
1373                 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
1374                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1375                             "Not FCP target so not offloading\n");
1376                         break;
1377                 }
1378
1379                 fcport->rdata = rdata;
1380                 fcport->rport = rport;
1381
1382                 rval = qedf_alloc_sq(qedf, fcport);
1383                 if (rval) {
1384                         qedf_cleanup_fcport(qedf, fcport);
1385                         break;
1386                 }
1387
1388                 /* Set device type */
1389                 if (rdata->flags & FC_RP_FLAGS_RETRY &&
1390                     rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET &&
1391                     !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) {
1392                         fcport->dev_type = QEDF_RPORT_TYPE_TAPE;
1393                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1394                             "portid=%06x is a TAPE device.\n",
1395                             rdata->ids.port_id);
1396                 } else {
1397                         fcport->dev_type = QEDF_RPORT_TYPE_DISK;
1398                 }
1399
1400                 rval = qedf_offload_connection(qedf, fcport);
1401                 if (rval) {
1402                         qedf_cleanup_fcport(qedf, fcport);
1403                         break;
1404                 }
1405
1406                 /* Add fcport to list of qedf_ctx list of offloaded ports */
1407                 spin_lock_irqsave(&qedf->hba_lock, flags);
1408                 list_add_rcu(&fcport->peers, &qedf->fcports);
1409                 spin_unlock_irqrestore(&qedf->hba_lock, flags);
1410
1411                 /*
1412                  * Set the session ready bit to let everyone know that this
1413                  * connection is ready for I/O
1414                  */
1415                 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags);
1416                 atomic_inc(&qedf->num_offloads);
1417
1418                 break;
1419         case RPORT_EV_LOGO:
1420         case RPORT_EV_FAILED:
1421         case RPORT_EV_STOP:
1422                 port_id = rdata->ids.port_id;
1423                 if (port_id == FC_FID_DIR_SERV)
1424                         break;
1425
1426                 if (!rport) {
1427                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1428                             "port_id=%x - rport notcreated Yet!!\n", port_id);
1429                         break;
1430                 }
1431                 rp = rport->dd_data;
1432                 /*
1433                  * Perform session upload. Note that rdata->peers is already
1434                  * removed from disc->rports list before we get this event.
1435                  */
1436                 fcport = (struct qedf_rport *)&rp[1];
1437
1438                 /* Only free this fcport if it is offloaded already */
1439                 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) &&
1440                     !test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1441                     &fcport->flags)) {
1442                         set_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1443                                 &fcport->flags);
1444                         qedf_cleanup_fcport(qedf, fcport);
1445                         /*
1446                          * Remove fcport to list of qedf_ctx list of offloaded
1447                          * ports
1448                          */
1449                         spin_lock_irqsave(&qedf->hba_lock, flags);
1450                         list_del_rcu(&fcport->peers);
1451                         spin_unlock_irqrestore(&qedf->hba_lock, flags);
1452
1453                         clear_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1454                             &fcport->flags);
1455                         atomic_dec(&qedf->num_offloads);
1456                 }
1457
1458                 break;
1459
1460         case RPORT_EV_NONE:
1461                 break;
1462         }
1463 }
1464
1465 static void qedf_abort_io(struct fc_lport *lport)
1466 {
1467         /* NO-OP but need to fill in the template */
1468 }
1469
1470 static void qedf_fcp_cleanup(struct fc_lport *lport)
1471 {
1472         /*
1473          * NO-OP but need to fill in template to prevent a NULL
1474          * function pointer dereference during link down. I/Os
1475          * will be flushed when port is uploaded.
1476          */
1477 }
1478
1479 static struct libfc_function_template qedf_lport_template = {
1480         .frame_send             = qedf_xmit,
1481         .fcp_abort_io           = qedf_abort_io,
1482         .fcp_cleanup            = qedf_fcp_cleanup,
1483         .rport_event_callback   = qedf_rport_event_handler,
1484         .elsct_send             = qedf_elsct_send,
1485 };
1486
1487 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf)
1488 {
1489         fcoe_ctlr_init(&qedf->ctlr, FIP_MODE_AUTO);
1490
1491         qedf->ctlr.send = qedf_fip_send;
1492         qedf->ctlr.get_src_addr = qedf_get_src_mac;
1493         ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac);
1494 }
1495
1496 static void qedf_setup_fdmi(struct qedf_ctx *qedf)
1497 {
1498         struct fc_lport *lport = qedf->lport;
1499         struct fc_host_attrs *fc_host = shost_to_fc_host(lport->host);
1500         u8 buf[8];
1501         int i, pos;
1502
1503         /*
1504          * fdmi_enabled needs to be set for libfc to execute FDMI registration.
1505          */
1506         lport->fdmi_enabled = 1;
1507
1508         /*
1509          * Setup the necessary fc_host attributes to that will be used to fill
1510          * in the FDMI information.
1511          */
1512
1513         /* Get the PCI-e Device Serial Number Capability */
1514         pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN);
1515         if (pos) {
1516                 pos += 4;
1517                 for (i = 0; i < 8; i++)
1518                         pci_read_config_byte(qedf->pdev, pos + i, &buf[i]);
1519
1520                 snprintf(fc_host->serial_number,
1521                     sizeof(fc_host->serial_number),
1522                     "%02X%02X%02X%02X%02X%02X%02X%02X",
1523                     buf[7], buf[6], buf[5], buf[4],
1524                     buf[3], buf[2], buf[1], buf[0]);
1525         } else
1526                 snprintf(fc_host->serial_number,
1527                     sizeof(fc_host->serial_number), "Unknown");
1528
1529         snprintf(fc_host->manufacturer,
1530             sizeof(fc_host->manufacturer), "%s", "Cavium Inc.");
1531
1532         snprintf(fc_host->model, sizeof(fc_host->model), "%s", "QL41000");
1533
1534         snprintf(fc_host->model_description, sizeof(fc_host->model_description),
1535             "%s", "QLogic FastLinQ QL41000 Series 10/25/40/50GGbE Controller"
1536             "(FCoE)");
1537
1538         snprintf(fc_host->hardware_version, sizeof(fc_host->hardware_version),
1539             "Rev %d", qedf->pdev->revision);
1540
1541         snprintf(fc_host->driver_version, sizeof(fc_host->driver_version),
1542             "%s", QEDF_VERSION);
1543
1544         snprintf(fc_host->firmware_version, sizeof(fc_host->firmware_version),
1545             "%d.%d.%d.%d", FW_MAJOR_VERSION, FW_MINOR_VERSION,
1546             FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
1547 }
1548
1549 static int qedf_lport_setup(struct qedf_ctx *qedf)
1550 {
1551         struct fc_lport *lport = qedf->lport;
1552
1553         lport->link_up = 0;
1554         lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1555         lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1556         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1557             FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1558         lport->boot_time = jiffies;
1559         lport->e_d_tov = 2 * 1000;
1560         lport->r_a_tov = 10 * 1000;
1561
1562         /* Set NPIV support */
1563         lport->does_npiv = 1;
1564         fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV;
1565
1566         fc_set_wwnn(lport, qedf->wwnn);
1567         fc_set_wwpn(lport, qedf->wwpn);
1568
1569         fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0);
1570
1571         /* Allocate the exchange manager */
1572         fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_PARAMS_NUM_TASKS,
1573                           0xfffe, NULL);
1574
1575         if (fc_lport_init_stats(lport))
1576                 return -ENOMEM;
1577
1578         /* Finish lport config */
1579         fc_lport_config(lport);
1580
1581         /* Set max frame size */
1582         fc_set_mfs(lport, QEDF_MFS);
1583         fc_host_maxframe_size(lport->host) = lport->mfs;
1584
1585         /* Set default dev_loss_tmo based on module parameter */
1586         fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo;
1587
1588         /* Set symbolic node name */
1589         snprintf(fc_host_symbolic_name(lport->host), 256,
1590             "QLogic %s v%s", QEDF_MODULE_NAME, QEDF_VERSION);
1591
1592         qedf_setup_fdmi(qedf);
1593
1594         return 0;
1595 }
1596
1597 /*
1598  * NPIV functions
1599  */
1600
1601 static int qedf_vport_libfc_config(struct fc_vport *vport,
1602         struct fc_lport *lport)
1603 {
1604         lport->link_up = 0;
1605         lport->qfull = 0;
1606         lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1607         lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1608         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1609             FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1610         lport->boot_time = jiffies;
1611         lport->e_d_tov = 2 * 1000;
1612         lport->r_a_tov = 10 * 1000;
1613         lport->does_npiv = 1; /* Temporary until we add NPIV support */
1614
1615         /* Allocate stats for vport */
1616         if (fc_lport_init_stats(lport))
1617                 return -ENOMEM;
1618
1619         /* Finish lport config */
1620         fc_lport_config(lport);
1621
1622         /* offload related configuration */
1623         lport->crc_offload = 0;
1624         lport->seq_offload = 0;
1625         lport->lro_enabled = 0;
1626         lport->lro_xid = 0;
1627         lport->lso_max = 0;
1628
1629         return 0;
1630 }
1631
1632 static int qedf_vport_create(struct fc_vport *vport, bool disabled)
1633 {
1634         struct Scsi_Host *shost = vport_to_shost(vport);
1635         struct fc_lport *n_port = shost_priv(shost);
1636         struct fc_lport *vn_port;
1637         struct qedf_ctx *base_qedf = lport_priv(n_port);
1638         struct qedf_ctx *vport_qedf;
1639
1640         char buf[32];
1641         int rc = 0;
1642
1643         rc = fcoe_validate_vport_create(vport);
1644         if (rc) {
1645                 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1646                 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, "
1647                            "WWPN (0x%s) already exists.\n", buf);
1648                 goto err1;
1649         }
1650
1651         if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) {
1652                 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport "
1653                            "because link is not up.\n");
1654                 rc = -EIO;
1655                 goto err1;
1656         }
1657
1658         vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx));
1659         if (!vn_port) {
1660                 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport "
1661                            "for vport.\n");
1662                 rc = -ENOMEM;
1663                 goto err1;
1664         }
1665
1666         fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1667         QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n",
1668             buf);
1669
1670         /* Copy some fields from base_qedf */
1671         vport_qedf = lport_priv(vn_port);
1672         memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx));
1673
1674         /* Set qedf data specific to this vport */
1675         vport_qedf->lport = vn_port;
1676         /* Use same hba_lock as base_qedf */
1677         vport_qedf->hba_lock = base_qedf->hba_lock;
1678         vport_qedf->pdev = base_qedf->pdev;
1679         vport_qedf->cmd_mgr = base_qedf->cmd_mgr;
1680         init_completion(&vport_qedf->flogi_compl);
1681         INIT_LIST_HEAD(&vport_qedf->fcports);
1682
1683         rc = qedf_vport_libfc_config(vport, vn_port);
1684         if (rc) {
1685                 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory "
1686                     "for lport stats.\n");
1687                 goto err2;
1688         }
1689
1690         fc_set_wwnn(vn_port, vport->node_name);
1691         fc_set_wwpn(vn_port, vport->port_name);
1692         vport_qedf->wwnn = vn_port->wwnn;
1693         vport_qedf->wwpn = vn_port->wwpn;
1694
1695         vn_port->host->transportt = qedf_fc_vport_transport_template;
1696         vn_port->host->can_queue = FCOE_PARAMS_NUM_TASKS;
1697         vn_port->host->max_lun = qedf_max_lun;
1698         vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD;
1699         vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN;
1700
1701         rc = scsi_add_host(vn_port->host, &vport->dev);
1702         if (rc) {
1703                 QEDF_WARN(&(base_qedf->dbg_ctx), "Error adding Scsi_Host.\n");
1704                 goto err2;
1705         }
1706
1707         /* Set default dev_loss_tmo based on module parameter */
1708         fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo;
1709
1710         /* Init libfc stuffs */
1711         memcpy(&vn_port->tt, &qedf_lport_template,
1712                 sizeof(qedf_lport_template));
1713         fc_exch_init(vn_port);
1714         fc_elsct_init(vn_port);
1715         fc_lport_init(vn_port);
1716         fc_disc_init(vn_port);
1717         fc_disc_config(vn_port, vn_port);
1718
1719
1720         /* Allocate the exchange manager */
1721         shost = vport_to_shost(vport);
1722         n_port = shost_priv(shost);
1723         fc_exch_mgr_list_clone(n_port, vn_port);
1724
1725         /* Set max frame size */
1726         fc_set_mfs(vn_port, QEDF_MFS);
1727
1728         fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN;
1729
1730         if (disabled) {
1731                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1732         } else {
1733                 vn_port->boot_time = jiffies;
1734                 fc_fabric_login(vn_port);
1735                 fc_vport_setlink(vn_port);
1736         }
1737
1738         QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n",
1739                    vn_port);
1740
1741         /* Set up debug context for vport */
1742         vport_qedf->dbg_ctx.host_no = vn_port->host->host_no;
1743         vport_qedf->dbg_ctx.pdev = base_qedf->pdev;
1744
1745 err2:
1746         scsi_host_put(vn_port->host);
1747 err1:
1748         return rc;
1749 }
1750
1751 static int qedf_vport_destroy(struct fc_vport *vport)
1752 {
1753         struct Scsi_Host *shost = vport_to_shost(vport);
1754         struct fc_lport *n_port = shost_priv(shost);
1755         struct fc_lport *vn_port = vport->dd_data;
1756         struct qedf_ctx *qedf = lport_priv(vn_port);
1757
1758         if (!qedf) {
1759                 QEDF_ERR(NULL, "qedf is NULL.\n");
1760                 goto out;
1761         }
1762
1763         /* Set unloading bit on vport qedf_ctx to prevent more I/O */
1764         set_bit(QEDF_UNLOADING, &qedf->flags);
1765
1766         mutex_lock(&n_port->lp_mutex);
1767         list_del(&vn_port->list);
1768         mutex_unlock(&n_port->lp_mutex);
1769
1770         fc_fabric_logoff(vn_port);
1771         fc_lport_destroy(vn_port);
1772
1773         /* Detach from scsi-ml */
1774         fc_remove_host(vn_port->host);
1775         scsi_remove_host(vn_port->host);
1776
1777         /*
1778          * Only try to release the exchange manager if the vn_port
1779          * configuration is complete.
1780          */
1781         if (vn_port->state == LPORT_ST_READY)
1782                 fc_exch_mgr_free(vn_port);
1783
1784         /* Free memory used by statistical counters */
1785         fc_lport_free_stats(vn_port);
1786
1787         /* Release Scsi_Host */
1788         if (vn_port->host)
1789                 scsi_host_put(vn_port->host);
1790
1791 out:
1792         return 0;
1793 }
1794
1795 static int qedf_vport_disable(struct fc_vport *vport, bool disable)
1796 {
1797         struct fc_lport *lport = vport->dd_data;
1798
1799         if (disable) {
1800                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1801                 fc_fabric_logoff(lport);
1802         } else {
1803                 lport->boot_time = jiffies;
1804                 fc_fabric_login(lport);
1805                 fc_vport_setlink(lport);
1806         }
1807         return 0;
1808 }
1809
1810 /*
1811  * During removal we need to wait for all the vports associated with a port
1812  * to be destroyed so we avoid a race condition where libfc is still trying
1813  * to reap vports while the driver remove function has already reaped the
1814  * driver contexts associated with the physical port.
1815  */
1816 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf)
1817 {
1818         struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host);
1819
1820         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
1821             "Entered.\n");
1822         while (fc_host->npiv_vports_inuse > 0) {
1823                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
1824                     "Waiting for all vports to be reaped.\n");
1825                 msleep(1000);
1826         }
1827 }
1828
1829 /**
1830  * qedf_fcoe_reset - Resets the fcoe
1831  *
1832  * @shost: shost the reset is from
1833  *
1834  * Returns: always 0
1835  */
1836 static int qedf_fcoe_reset(struct Scsi_Host *shost)
1837 {
1838         struct fc_lport *lport = shost_priv(shost);
1839
1840         qedf_ctx_soft_reset(lport);
1841         return 0;
1842 }
1843
1844 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host
1845         *shost)
1846 {
1847         struct fc_host_statistics *qedf_stats;
1848         struct fc_lport *lport = shost_priv(shost);
1849         struct qedf_ctx *qedf = lport_priv(lport);
1850         struct qed_fcoe_stats *fw_fcoe_stats;
1851
1852         qedf_stats = fc_get_host_stats(shost);
1853
1854         /* We don't collect offload stats for specific NPIV ports */
1855         if (lport->vport)
1856                 goto out;
1857
1858         fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL);
1859         if (!fw_fcoe_stats) {
1860                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for "
1861                     "fw_fcoe_stats.\n");
1862                 goto out;
1863         }
1864
1865         mutex_lock(&qedf->stats_mutex);
1866
1867         /* Query firmware for offload stats */
1868         qed_ops->get_stats(qedf->cdev, fw_fcoe_stats);
1869
1870         /*
1871          * The expectation is that we add our offload stats to the stats
1872          * being maintained by libfc each time the fc_get_host_status callback
1873          * is invoked. The additions are not carried over for each call to
1874          * the fc_get_host_stats callback.
1875          */
1876         qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt +
1877             fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt +
1878             fw_fcoe_stats->fcoe_tx_other_pkt_cnt;
1879         qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt +
1880             fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt +
1881             fw_fcoe_stats->fcoe_rx_other_pkt_cnt;
1882         qedf_stats->fcp_input_megabytes +=
1883             do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000);
1884         qedf_stats->fcp_output_megabytes +=
1885             do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000);
1886         qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4;
1887         qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4;
1888         qedf_stats->invalid_crc_count +=
1889             fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt;
1890         qedf_stats->dumped_frames =
1891             fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
1892         qedf_stats->error_frames +=
1893             fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
1894         qedf_stats->fcp_input_requests += qedf->input_requests;
1895         qedf_stats->fcp_output_requests += qedf->output_requests;
1896         qedf_stats->fcp_control_requests += qedf->control_requests;
1897         qedf_stats->fcp_packet_aborts += qedf->packet_aborts;
1898         qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures;
1899
1900         mutex_unlock(&qedf->stats_mutex);
1901         kfree(fw_fcoe_stats);
1902 out:
1903         return qedf_stats;
1904 }
1905
1906 static struct fc_function_template qedf_fc_transport_fn = {
1907         .show_host_node_name = 1,
1908         .show_host_port_name = 1,
1909         .show_host_supported_classes = 1,
1910         .show_host_supported_fc4s = 1,
1911         .show_host_active_fc4s = 1,
1912         .show_host_maxframe_size = 1,
1913
1914         .show_host_port_id = 1,
1915         .show_host_supported_speeds = 1,
1916         .get_host_speed = fc_get_host_speed,
1917         .show_host_speed = 1,
1918         .show_host_port_type = 1,
1919         .get_host_port_state = fc_get_host_port_state,
1920         .show_host_port_state = 1,
1921         .show_host_symbolic_name = 1,
1922
1923         /*
1924          * Tell FC transport to allocate enough space to store the backpointer
1925          * for the associate qedf_rport struct.
1926          */
1927         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
1928                                 sizeof(struct qedf_rport)),
1929         .show_rport_maxframe_size = 1,
1930         .show_rport_supported_classes = 1,
1931         .show_host_fabric_name = 1,
1932         .show_starget_node_name = 1,
1933         .show_starget_port_name = 1,
1934         .show_starget_port_id = 1,
1935         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
1936         .show_rport_dev_loss_tmo = 1,
1937         .get_fc_host_stats = qedf_fc_get_host_stats,
1938         .issue_fc_host_lip = qedf_fcoe_reset,
1939         .vport_create = qedf_vport_create,
1940         .vport_delete = qedf_vport_destroy,
1941         .vport_disable = qedf_vport_disable,
1942         .bsg_request = fc_lport_bsg_request,
1943 };
1944
1945 static struct fc_function_template qedf_fc_vport_transport_fn = {
1946         .show_host_node_name = 1,
1947         .show_host_port_name = 1,
1948         .show_host_supported_classes = 1,
1949         .show_host_supported_fc4s = 1,
1950         .show_host_active_fc4s = 1,
1951         .show_host_maxframe_size = 1,
1952         .show_host_port_id = 1,
1953         .show_host_supported_speeds = 1,
1954         .get_host_speed = fc_get_host_speed,
1955         .show_host_speed = 1,
1956         .show_host_port_type = 1,
1957         .get_host_port_state = fc_get_host_port_state,
1958         .show_host_port_state = 1,
1959         .show_host_symbolic_name = 1,
1960         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
1961                                 sizeof(struct qedf_rport)),
1962         .show_rport_maxframe_size = 1,
1963         .show_rport_supported_classes = 1,
1964         .show_host_fabric_name = 1,
1965         .show_starget_node_name = 1,
1966         .show_starget_port_name = 1,
1967         .show_starget_port_id = 1,
1968         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
1969         .show_rport_dev_loss_tmo = 1,
1970         .get_fc_host_stats = fc_get_host_stats,
1971         .issue_fc_host_lip = qedf_fcoe_reset,
1972         .bsg_request = fc_lport_bsg_request,
1973 };
1974
1975 static bool qedf_fp_has_work(struct qedf_fastpath *fp)
1976 {
1977         struct qedf_ctx *qedf = fp->qedf;
1978         struct global_queue *que;
1979         struct qed_sb_info *sb_info = fp->sb_info;
1980         struct status_block_e4 *sb = sb_info->sb_virt;
1981         u16 prod_idx;
1982
1983         /* Get the pointer to the global CQ this completion is on */
1984         que = qedf->global_queues[fp->sb_id];
1985
1986         /* Be sure all responses have been written to PI */
1987         rmb();
1988
1989         /* Get the current firmware producer index */
1990         prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
1991
1992         return (que->cq_prod_idx != prod_idx);
1993 }
1994
1995 /*
1996  * Interrupt handler code.
1997  */
1998
1999 /* Process completion queue and copy CQE contents for deferred processesing
2000  *
2001  * Return true if we should wake the I/O thread, false if not.
2002  */
2003 static bool qedf_process_completions(struct qedf_fastpath *fp)
2004 {
2005         struct qedf_ctx *qedf = fp->qedf;
2006         struct qed_sb_info *sb_info = fp->sb_info;
2007         struct status_block_e4 *sb = sb_info->sb_virt;
2008         struct global_queue *que;
2009         u16 prod_idx;
2010         struct fcoe_cqe *cqe;
2011         struct qedf_io_work *io_work;
2012         int num_handled = 0;
2013         unsigned int cpu;
2014         struct qedf_ioreq *io_req = NULL;
2015         u16 xid;
2016         u16 new_cqes;
2017         u32 comp_type;
2018
2019         /* Get the current firmware producer index */
2020         prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
2021
2022         /* Get the pointer to the global CQ this completion is on */
2023         que = qedf->global_queues[fp->sb_id];
2024
2025         /* Calculate the amount of new elements since last processing */
2026         new_cqes = (prod_idx >= que->cq_prod_idx) ?
2027             (prod_idx - que->cq_prod_idx) :
2028             0x10000 - que->cq_prod_idx + prod_idx;
2029
2030         /* Save producer index */
2031         que->cq_prod_idx = prod_idx;
2032
2033         while (new_cqes) {
2034                 fp->completions++;
2035                 num_handled++;
2036                 cqe = &que->cq[que->cq_cons_idx];
2037
2038                 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2039                     FCOE_CQE_CQE_TYPE_MASK;
2040
2041                 /*
2042                  * Process unsolicited CQEs directly in the interrupt handler
2043                  * sine we need the fastpath ID
2044                  */
2045                 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) {
2046                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL,
2047                            "Unsolicated CQE.\n");
2048                         qedf_process_unsol_compl(qedf, fp->sb_id, cqe);
2049                         /*
2050                          * Don't add a work list item.  Increment consumer
2051                          * consumer index and move on.
2052                          */
2053                         goto inc_idx;
2054                 }
2055
2056                 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2057                 io_req = &qedf->cmd_mgr->cmds[xid];
2058
2059                 /*
2060                  * Figure out which percpu thread we should queue this I/O
2061                  * on.
2062                  */
2063                 if (!io_req)
2064                         /* If there is not io_req assocated with this CQE
2065                          * just queue it on CPU 0
2066                          */
2067                         cpu = 0;
2068                 else {
2069                         cpu = io_req->cpu;
2070                         io_req->int_cpu = smp_processor_id();
2071                 }
2072
2073                 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC);
2074                 if (!io_work) {
2075                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate "
2076                                    "work for I/O completion.\n");
2077                         continue;
2078                 }
2079                 memset(io_work, 0, sizeof(struct qedf_io_work));
2080
2081                 INIT_WORK(&io_work->work, qedf_fp_io_handler);
2082
2083                 /* Copy contents of CQE for deferred processing */
2084                 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe));
2085
2086                 io_work->qedf = fp->qedf;
2087                 io_work->fp = NULL; /* Only used for unsolicited frames */
2088
2089                 queue_work_on(cpu, qedf_io_wq, &io_work->work);
2090
2091 inc_idx:
2092                 que->cq_cons_idx++;
2093                 if (que->cq_cons_idx == fp->cq_num_entries)
2094                         que->cq_cons_idx = 0;
2095                 new_cqes--;
2096         }
2097
2098         return true;
2099 }
2100
2101
2102 /* MSI-X fastpath handler code */
2103 static irqreturn_t qedf_msix_handler(int irq, void *dev_id)
2104 {
2105         struct qedf_fastpath *fp = dev_id;
2106
2107         if (!fp) {
2108                 QEDF_ERR(NULL, "fp is null.\n");
2109                 return IRQ_HANDLED;
2110         }
2111         if (!fp->sb_info) {
2112                 QEDF_ERR(NULL, "fp->sb_info in null.");
2113                 return IRQ_HANDLED;
2114         }
2115
2116         /*
2117          * Disable interrupts for this status block while we process new
2118          * completions
2119          */
2120         qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/);
2121
2122         while (1) {
2123                 qedf_process_completions(fp);
2124
2125                 if (qedf_fp_has_work(fp) == 0) {
2126                         /* Update the sb information */
2127                         qed_sb_update_sb_idx(fp->sb_info);
2128
2129                         /* Check for more work */
2130                         rmb();
2131
2132                         if (qedf_fp_has_work(fp) == 0) {
2133                                 /* Re-enable interrupts */
2134                                 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
2135                                 return IRQ_HANDLED;
2136                         }
2137                 }
2138         }
2139
2140         /* Do we ever want to break out of above loop? */
2141         return IRQ_HANDLED;
2142 }
2143
2144 /* simd handler for MSI/INTa */
2145 static void qedf_simd_int_handler(void *cookie)
2146 {
2147         /* Cookie is qedf_ctx struct */
2148         struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2149
2150         QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf);
2151 }
2152
2153 #define QEDF_SIMD_HANDLER_NUM           0
2154 static void qedf_sync_free_irqs(struct qedf_ctx *qedf)
2155 {
2156         int i;
2157
2158         if (qedf->int_info.msix_cnt) {
2159                 for (i = 0; i < qedf->int_info.used_cnt; i++) {
2160                         synchronize_irq(qedf->int_info.msix[i].vector);
2161                         irq_set_affinity_hint(qedf->int_info.msix[i].vector,
2162                             NULL);
2163                         irq_set_affinity_notifier(qedf->int_info.msix[i].vector,
2164                             NULL);
2165                         free_irq(qedf->int_info.msix[i].vector,
2166                             &qedf->fp_array[i]);
2167                 }
2168         } else
2169                 qed_ops->common->simd_handler_clean(qedf->cdev,
2170                     QEDF_SIMD_HANDLER_NUM);
2171
2172         qedf->int_info.used_cnt = 0;
2173         qed_ops->common->set_fp_int(qedf->cdev, 0);
2174 }
2175
2176 static int qedf_request_msix_irq(struct qedf_ctx *qedf)
2177 {
2178         int i, rc, cpu;
2179
2180         cpu = cpumask_first(cpu_online_mask);
2181         for (i = 0; i < qedf->num_queues; i++) {
2182                 rc = request_irq(qedf->int_info.msix[i].vector,
2183                     qedf_msix_handler, 0, "qedf", &qedf->fp_array[i]);
2184
2185                 if (rc) {
2186                         QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n");
2187                         qedf_sync_free_irqs(qedf);
2188                         return rc;
2189                 }
2190
2191                 qedf->int_info.used_cnt++;
2192                 rc = irq_set_affinity_hint(qedf->int_info.msix[i].vector,
2193                     get_cpu_mask(cpu));
2194                 cpu = cpumask_next(cpu, cpu_online_mask);
2195         }
2196
2197         return 0;
2198 }
2199
2200 static int qedf_setup_int(struct qedf_ctx *qedf)
2201 {
2202         int rc = 0;
2203
2204         /*
2205          * Learn interrupt configuration
2206          */
2207         rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus());
2208         if (rc <= 0)
2209                 return 0;
2210
2211         rc  = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info);
2212         if (rc)
2213                 return 0;
2214
2215         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = "
2216                    "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt,
2217                    num_online_cpus());
2218
2219         if (qedf->int_info.msix_cnt)
2220                 return qedf_request_msix_irq(qedf);
2221
2222         qed_ops->common->simd_handler_config(qedf->cdev, &qedf,
2223             QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler);
2224         qedf->int_info.used_cnt = 1;
2225
2226         QEDF_ERR(&qedf->dbg_ctx, "Only MSI-X supported. Failing probe.\n");
2227         return -EINVAL;
2228 }
2229
2230 /* Main function for libfc frame reception */
2231 static void qedf_recv_frame(struct qedf_ctx *qedf,
2232         struct sk_buff *skb)
2233 {
2234         u32 fr_len;
2235         struct fc_lport *lport;
2236         struct fc_frame_header *fh;
2237         struct fcoe_crc_eof crc_eof;
2238         struct fc_frame *fp;
2239         u8 *mac = NULL;
2240         u8 *dest_mac = NULL;
2241         struct fcoe_hdr *hp;
2242         struct qedf_rport *fcport;
2243         struct fc_lport *vn_port;
2244         u32 f_ctl;
2245
2246         lport = qedf->lport;
2247         if (lport == NULL || lport->state == LPORT_ST_DISABLED) {
2248                 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n");
2249                 kfree_skb(skb);
2250                 return;
2251         }
2252
2253         if (skb_is_nonlinear(skb))
2254                 skb_linearize(skb);
2255         mac = eth_hdr(skb)->h_source;
2256         dest_mac = eth_hdr(skb)->h_dest;
2257
2258         /* Pull the header */
2259         hp = (struct fcoe_hdr *)skb->data;
2260         fh = (struct fc_frame_header *) skb_transport_header(skb);
2261         skb_pull(skb, sizeof(struct fcoe_hdr));
2262         fr_len = skb->len - sizeof(struct fcoe_crc_eof);
2263
2264         fp = (struct fc_frame *)skb;
2265         fc_frame_init(fp);
2266         fr_dev(fp) = lport;
2267         fr_sof(fp) = hp->fcoe_sof;
2268         if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
2269                 kfree_skb(skb);
2270                 return;
2271         }
2272         fr_eof(fp) = crc_eof.fcoe_eof;
2273         fr_crc(fp) = crc_eof.fcoe_crc32;
2274         if (pskb_trim(skb, fr_len)) {
2275                 kfree_skb(skb);
2276                 return;
2277         }
2278
2279         fh = fc_frame_header_get(fp);
2280
2281         /*
2282          * Invalid frame filters.
2283          */
2284
2285         if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
2286             fh->fh_type == FC_TYPE_FCP) {
2287                 /* Drop FCP data. We dont this in L2 path */
2288                 kfree_skb(skb);
2289                 return;
2290         }
2291         if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
2292             fh->fh_type == FC_TYPE_ELS) {
2293                 switch (fc_frame_payload_op(fp)) {
2294                 case ELS_LOGO:
2295                         if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
2296                                 /* drop non-FIP LOGO */
2297                                 kfree_skb(skb);
2298                                 return;
2299                         }
2300                         break;
2301                 }
2302         }
2303
2304         if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
2305                 /* Drop incoming ABTS */
2306                 kfree_skb(skb);
2307                 return;
2308         }
2309
2310         if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
2311                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2312                     "FC frame d_id mismatch with MAC %pM.\n", dest_mac);
2313                 kfree_skb(skb);
2314                 return;
2315         }
2316
2317         if (qedf->ctlr.state) {
2318                 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) {
2319                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2320                             "Wrong source address: mac:%pM dest_addr:%pM.\n",
2321                             mac, qedf->ctlr.dest_addr);
2322                         kfree_skb(skb);
2323                         return;
2324                 }
2325         }
2326
2327         vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
2328
2329         /*
2330          * If the destination ID from the frame header does not match what we
2331          * have on record for lport and the search for a NPIV port came up
2332          * empty then this is not addressed to our port so simply drop it.
2333          */
2334         if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
2335                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2336                     "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n",
2337                     lport->port_id, ntoh24(fh->fh_d_id));
2338                 kfree_skb(skb);
2339                 return;
2340         }
2341
2342         f_ctl = ntoh24(fh->fh_f_ctl);
2343         if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) &&
2344             (f_ctl & FC_FC_EX_CTX)) {
2345                 /* Drop incoming ABTS response that has both SEQ/EX CTX set */
2346                 kfree_skb(skb);
2347                 return;
2348         }
2349
2350         /*
2351          * If a connection is uploading, drop incoming FCoE frames as there
2352          * is a small window where we could try to return a frame while libfc
2353          * is trying to clean things up.
2354          */
2355
2356         /* Get fcport associated with d_id if it exists */
2357         fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
2358
2359         if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
2360             &fcport->flags)) {
2361                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2362                     "Connection uploading, dropping fp=%p.\n", fp);
2363                 kfree_skb(skb);
2364                 return;
2365         }
2366
2367         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: "
2368             "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp,
2369             ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl,
2370             fh->fh_type);
2371         if (qedf_dump_frames)
2372                 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
2373                     1, skb->data, skb->len, false);
2374         fc_exch_recv(lport, fp);
2375 }
2376
2377 static void qedf_ll2_process_skb(struct work_struct *work)
2378 {
2379         struct qedf_skb_work *skb_work =
2380             container_of(work, struct qedf_skb_work, work);
2381         struct qedf_ctx *qedf = skb_work->qedf;
2382         struct sk_buff *skb = skb_work->skb;
2383         struct ethhdr *eh;
2384
2385         if (!qedf) {
2386                 QEDF_ERR(NULL, "qedf is NULL\n");
2387                 goto err_out;
2388         }
2389
2390         eh = (struct ethhdr *)skb->data;
2391
2392         /* Undo VLAN encapsulation */
2393         if (eh->h_proto == htons(ETH_P_8021Q)) {
2394                 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
2395                 eh = skb_pull(skb, VLAN_HLEN);
2396                 skb_reset_mac_header(skb);
2397         }
2398
2399         /*
2400          * Process either a FIP frame or FCoE frame based on the
2401          * protocol value.  If it's not either just drop the
2402          * frame.
2403          */
2404         if (eh->h_proto == htons(ETH_P_FIP)) {
2405                 qedf_fip_recv(qedf, skb);
2406                 goto out;
2407         } else if (eh->h_proto == htons(ETH_P_FCOE)) {
2408                 __skb_pull(skb, ETH_HLEN);
2409                 qedf_recv_frame(qedf, skb);
2410                 goto out;
2411         } else
2412                 goto err_out;
2413
2414 err_out:
2415         kfree_skb(skb);
2416 out:
2417         kfree(skb_work);
2418         return;
2419 }
2420
2421 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb,
2422         u32 arg1, u32 arg2)
2423 {
2424         struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2425         struct qedf_skb_work *skb_work;
2426
2427         if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
2428                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2429                           "Dropping frame as link state is down.\n");
2430                 kfree_skb(skb);
2431                 return 0;
2432         }
2433
2434         skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC);
2435         if (!skb_work) {
2436                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so "
2437                            "dropping frame.\n");
2438                 kfree_skb(skb);
2439                 return 0;
2440         }
2441
2442         INIT_WORK(&skb_work->work, qedf_ll2_process_skb);
2443         skb_work->skb = skb;
2444         skb_work->qedf = qedf;
2445         queue_work(qedf->ll2_recv_wq, &skb_work->work);
2446
2447         return 0;
2448 }
2449
2450 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = {
2451         .rx_cb = qedf_ll2_rx,
2452         .tx_cb = NULL,
2453 };
2454
2455 /* Main thread to process I/O completions */
2456 void qedf_fp_io_handler(struct work_struct *work)
2457 {
2458         struct qedf_io_work *io_work =
2459             container_of(work, struct qedf_io_work, work);
2460         u32 comp_type;
2461
2462         /*
2463          * Deferred part of unsolicited CQE sends
2464          * frame to libfc.
2465          */
2466         comp_type = (io_work->cqe.cqe_data >>
2467             FCOE_CQE_CQE_TYPE_SHIFT) &
2468             FCOE_CQE_CQE_TYPE_MASK;
2469         if (comp_type == FCOE_UNSOLIC_CQE_TYPE &&
2470             io_work->fp)
2471                 fc_exch_recv(io_work->qedf->lport, io_work->fp);
2472         else
2473                 qedf_process_cqe(io_work->qedf, &io_work->cqe);
2474
2475         kfree(io_work);
2476 }
2477
2478 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf,
2479         struct qed_sb_info *sb_info, u16 sb_id)
2480 {
2481         struct status_block_e4 *sb_virt;
2482         dma_addr_t sb_phys;
2483         int ret;
2484
2485         sb_virt = dma_alloc_coherent(&qedf->pdev->dev,
2486             sizeof(struct status_block_e4), &sb_phys, GFP_KERNEL);
2487
2488         if (!sb_virt) {
2489                 QEDF_ERR(&(qedf->dbg_ctx), "Status block allocation failed "
2490                           "for id = %d.\n", sb_id);
2491                 return -ENOMEM;
2492         }
2493
2494         ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys,
2495             sb_id, QED_SB_TYPE_STORAGE);
2496
2497         if (ret) {
2498                 QEDF_ERR(&(qedf->dbg_ctx), "Status block initialization "
2499                           "failed for id = %d.\n", sb_id);
2500                 return ret;
2501         }
2502
2503         return 0;
2504 }
2505
2506 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info)
2507 {
2508         if (sb_info->sb_virt)
2509                 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt),
2510                     (void *)sb_info->sb_virt, sb_info->sb_phys);
2511 }
2512
2513 static void qedf_destroy_sb(struct qedf_ctx *qedf)
2514 {
2515         int id;
2516         struct qedf_fastpath *fp = NULL;
2517
2518         for (id = 0; id < qedf->num_queues; id++) {
2519                 fp = &(qedf->fp_array[id]);
2520                 if (fp->sb_id == QEDF_SB_ID_NULL)
2521                         break;
2522                 qedf_free_sb(qedf, fp->sb_info);
2523                 kfree(fp->sb_info);
2524         }
2525         kfree(qedf->fp_array);
2526 }
2527
2528 static int qedf_prepare_sb(struct qedf_ctx *qedf)
2529 {
2530         int id;
2531         struct qedf_fastpath *fp;
2532         int ret;
2533
2534         qedf->fp_array =
2535             kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath),
2536                 GFP_KERNEL);
2537
2538         if (!qedf->fp_array) {
2539                 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation "
2540                           "failed.\n");
2541                 return -ENOMEM;
2542         }
2543
2544         for (id = 0; id < qedf->num_queues; id++) {
2545                 fp = &(qedf->fp_array[id]);
2546                 fp->sb_id = QEDF_SB_ID_NULL;
2547                 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL);
2548                 if (!fp->sb_info) {
2549                         QEDF_ERR(&(qedf->dbg_ctx), "SB info struct "
2550                                   "allocation failed.\n");
2551                         goto err;
2552                 }
2553                 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id);
2554                 if (ret) {
2555                         QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and "
2556                                   "initialization failed.\n");
2557                         goto err;
2558                 }
2559                 fp->sb_id = id;
2560                 fp->qedf = qedf;
2561                 fp->cq_num_entries =
2562                     qedf->global_queues[id]->cq_mem_size /
2563                     sizeof(struct fcoe_cqe);
2564         }
2565 err:
2566         return 0;
2567 }
2568
2569 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe)
2570 {
2571         u16 xid;
2572         struct qedf_ioreq *io_req;
2573         struct qedf_rport *fcport;
2574         u32 comp_type;
2575
2576         comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2577             FCOE_CQE_CQE_TYPE_MASK;
2578
2579         xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2580         io_req = &qedf->cmd_mgr->cmds[xid];
2581
2582         /* Completion not for a valid I/O anymore so just return */
2583         if (!io_req)
2584                 return;
2585
2586         fcport = io_req->fcport;
2587
2588         if (fcport == NULL) {
2589                 QEDF_ERR(&(qedf->dbg_ctx), "fcport is NULL.\n");
2590                 return;
2591         }
2592
2593         /*
2594          * Check that fcport is offloaded.  If it isn't then the spinlock
2595          * isn't valid and shouldn't be taken. We should just return.
2596          */
2597         if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
2598                 QEDF_ERR(&(qedf->dbg_ctx), "Session not offloaded yet.\n");
2599                 return;
2600         }
2601
2602
2603         switch (comp_type) {
2604         case FCOE_GOOD_COMPLETION_CQE_TYPE:
2605                 atomic_inc(&fcport->free_sqes);
2606                 switch (io_req->cmd_type) {
2607                 case QEDF_SCSI_CMD:
2608                         qedf_scsi_completion(qedf, cqe, io_req);
2609                         break;
2610                 case QEDF_ELS:
2611                         qedf_process_els_compl(qedf, cqe, io_req);
2612                         break;
2613                 case QEDF_TASK_MGMT_CMD:
2614                         qedf_process_tmf_compl(qedf, cqe, io_req);
2615                         break;
2616                 case QEDF_SEQ_CLEANUP:
2617                         qedf_process_seq_cleanup_compl(qedf, cqe, io_req);
2618                         break;
2619                 }
2620                 break;
2621         case FCOE_ERROR_DETECTION_CQE_TYPE:
2622                 atomic_inc(&fcport->free_sqes);
2623                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2624                     "Error detect CQE.\n");
2625                 qedf_process_error_detect(qedf, cqe, io_req);
2626                 break;
2627         case FCOE_EXCH_CLEANUP_CQE_TYPE:
2628                 atomic_inc(&fcport->free_sqes);
2629                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2630                     "Cleanup CQE.\n");
2631                 qedf_process_cleanup_compl(qedf, cqe, io_req);
2632                 break;
2633         case FCOE_ABTS_CQE_TYPE:
2634                 atomic_inc(&fcport->free_sqes);
2635                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2636                     "Abort CQE.\n");
2637                 qedf_process_abts_compl(qedf, cqe, io_req);
2638                 break;
2639         case FCOE_DUMMY_CQE_TYPE:
2640                 atomic_inc(&fcport->free_sqes);
2641                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2642                     "Dummy CQE.\n");
2643                 break;
2644         case FCOE_LOCAL_COMP_CQE_TYPE:
2645                 atomic_inc(&fcport->free_sqes);
2646                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2647                     "Local completion CQE.\n");
2648                 break;
2649         case FCOE_WARNING_CQE_TYPE:
2650                 atomic_inc(&fcport->free_sqes);
2651                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2652                     "Warning CQE.\n");
2653                 qedf_process_warning_compl(qedf, cqe, io_req);
2654                 break;
2655         case MAX_FCOE_CQE_TYPE:
2656                 atomic_inc(&fcport->free_sqes);
2657                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2658                     "Max FCoE CQE.\n");
2659                 break;
2660         default:
2661                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2662                     "Default CQE.\n");
2663                 break;
2664         }
2665 }
2666
2667 static void qedf_free_bdq(struct qedf_ctx *qedf)
2668 {
2669         int i;
2670
2671         if (qedf->bdq_pbl_list)
2672                 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE,
2673                     qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma);
2674
2675         if (qedf->bdq_pbl)
2676                 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size,
2677                     qedf->bdq_pbl, qedf->bdq_pbl_dma);
2678
2679         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2680                 if (qedf->bdq[i].buf_addr) {
2681                         dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE,
2682                             qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma);
2683                 }
2684         }
2685 }
2686
2687 static void qedf_free_global_queues(struct qedf_ctx *qedf)
2688 {
2689         int i;
2690         struct global_queue **gl = qedf->global_queues;
2691
2692         for (i = 0; i < qedf->num_queues; i++) {
2693                 if (!gl[i])
2694                         continue;
2695
2696                 if (gl[i]->cq)
2697                         dma_free_coherent(&qedf->pdev->dev,
2698                             gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma);
2699                 if (gl[i]->cq_pbl)
2700                         dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size,
2701                             gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
2702
2703                 kfree(gl[i]);
2704         }
2705
2706         qedf_free_bdq(qedf);
2707 }
2708
2709 static int qedf_alloc_bdq(struct qedf_ctx *qedf)
2710 {
2711         int i;
2712         struct scsi_bd *pbl;
2713         u64 *list;
2714         dma_addr_t page;
2715
2716         /* Alloc dma memory for BDQ buffers */
2717         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2718                 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev,
2719                     QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL);
2720                 if (!qedf->bdq[i].buf_addr) {
2721                         QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ "
2722                             "buffer %d.\n", i);
2723                         return -ENOMEM;
2724                 }
2725         }
2726
2727         /* Alloc dma memory for BDQ page buffer list */
2728         qedf->bdq_pbl_mem_size =
2729             QEDF_BDQ_SIZE * sizeof(struct scsi_bd);
2730         qedf->bdq_pbl_mem_size =
2731             ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE);
2732
2733         qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
2734             qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL);
2735         if (!qedf->bdq_pbl) {
2736                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n");
2737                 return -ENOMEM;
2738         }
2739
2740         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2741                   "BDQ PBL addr=0x%p dma=%pad\n",
2742                   qedf->bdq_pbl, &qedf->bdq_pbl_dma);
2743
2744         /*
2745          * Populate BDQ PBL with physical and virtual address of individual
2746          * BDQ buffers
2747          */
2748         pbl = (struct scsi_bd *)qedf->bdq_pbl;
2749         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2750                 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma));
2751                 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma));
2752                 pbl->opaque.fcoe_opaque.hi = 0;
2753                 /* Opaque lo data is an index into the BDQ array */
2754                 pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i);
2755                 pbl++;
2756         }
2757
2758         /* Allocate list of PBL pages */
2759         qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev,
2760                                                 QEDF_PAGE_SIZE,
2761                                                 &qedf->bdq_pbl_list_dma,
2762                                                 GFP_KERNEL);
2763         if (!qedf->bdq_pbl_list) {
2764                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n");
2765                 return -ENOMEM;
2766         }
2767
2768         /*
2769          * Now populate PBL list with pages that contain pointers to the
2770          * individual buffers.
2771          */
2772         qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size /
2773             QEDF_PAGE_SIZE;
2774         list = (u64 *)qedf->bdq_pbl_list;
2775         page = qedf->bdq_pbl_list_dma;
2776         for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) {
2777                 *list = qedf->bdq_pbl_dma;
2778                 list++;
2779                 page += QEDF_PAGE_SIZE;
2780         }
2781
2782         return 0;
2783 }
2784
2785 static int qedf_alloc_global_queues(struct qedf_ctx *qedf)
2786 {
2787         u32 *list;
2788         int i;
2789         int status = 0, rc;
2790         u32 *pbl;
2791         dma_addr_t page;
2792         int num_pages;
2793
2794         /* Allocate and map CQs, RQs */
2795         /*
2796          * Number of global queues (CQ / RQ). This should
2797          * be <= number of available MSIX vectors for the PF
2798          */
2799         if (!qedf->num_queues) {
2800                 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n");
2801                 return 1;
2802         }
2803
2804         /*
2805          * Make sure we allocated the PBL that will contain the physical
2806          * addresses of our queues
2807          */
2808         if (!qedf->p_cpuq) {
2809                 status = 1;
2810                 goto mem_alloc_failure;
2811         }
2812
2813         qedf->global_queues = kzalloc((sizeof(struct global_queue *)
2814             * qedf->num_queues), GFP_KERNEL);
2815         if (!qedf->global_queues) {
2816                 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global "
2817                           "queues array ptr memory\n");
2818                 return -ENOMEM;
2819         }
2820         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2821                    "qedf->global_queues=%p.\n", qedf->global_queues);
2822
2823         /* Allocate DMA coherent buffers for BDQ */
2824         rc = qedf_alloc_bdq(qedf);
2825         if (rc)
2826                 goto mem_alloc_failure;
2827
2828         /* Allocate a CQ and an associated PBL for each MSI-X vector */
2829         for (i = 0; i < qedf->num_queues; i++) {
2830                 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue),
2831                     GFP_KERNEL);
2832                 if (!qedf->global_queues[i]) {
2833                         QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate "
2834                                    "global queue %d.\n", i);
2835                         status = -ENOMEM;
2836                         goto mem_alloc_failure;
2837                 }
2838
2839                 qedf->global_queues[i]->cq_mem_size =
2840                     FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
2841                 qedf->global_queues[i]->cq_mem_size =
2842                     ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE);
2843
2844                 qedf->global_queues[i]->cq_pbl_size =
2845                     (qedf->global_queues[i]->cq_mem_size /
2846                     PAGE_SIZE) * sizeof(void *);
2847                 qedf->global_queues[i]->cq_pbl_size =
2848                     ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE);
2849
2850                 qedf->global_queues[i]->cq =
2851                     dma_alloc_coherent(&qedf->pdev->dev,
2852                                        qedf->global_queues[i]->cq_mem_size,
2853                                        &qedf->global_queues[i]->cq_dma,
2854                                        GFP_KERNEL);
2855
2856                 if (!qedf->global_queues[i]->cq) {
2857                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n");
2858                         status = -ENOMEM;
2859                         goto mem_alloc_failure;
2860                 }
2861
2862                 qedf->global_queues[i]->cq_pbl =
2863                     dma_alloc_coherent(&qedf->pdev->dev,
2864                                        qedf->global_queues[i]->cq_pbl_size,
2865                                        &qedf->global_queues[i]->cq_pbl_dma,
2866                                        GFP_KERNEL);
2867
2868                 if (!qedf->global_queues[i]->cq_pbl) {
2869                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n");
2870                         status = -ENOMEM;
2871                         goto mem_alloc_failure;
2872                 }
2873
2874                 /* Create PBL */
2875                 num_pages = qedf->global_queues[i]->cq_mem_size /
2876                     QEDF_PAGE_SIZE;
2877                 page = qedf->global_queues[i]->cq_dma;
2878                 pbl = (u32 *)qedf->global_queues[i]->cq_pbl;
2879
2880                 while (num_pages--) {
2881                         *pbl = U64_LO(page);
2882                         pbl++;
2883                         *pbl = U64_HI(page);
2884                         pbl++;
2885                         page += QEDF_PAGE_SIZE;
2886                 }
2887                 /* Set the initial consumer index for cq */
2888                 qedf->global_queues[i]->cq_cons_idx = 0;
2889         }
2890
2891         list = (u32 *)qedf->p_cpuq;
2892
2893         /*
2894          * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
2895          * CQ#1 PBL pointer, RQ#1 PBL pointer, etc.  Each PBL pointer points
2896          * to the physical address which contains an array of pointers to
2897          * the physical addresses of the specific queue pages.
2898          */
2899         for (i = 0; i < qedf->num_queues; i++) {
2900                 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma);
2901                 list++;
2902                 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma);
2903                 list++;
2904                 *list = U64_LO(0);
2905                 list++;
2906                 *list = U64_HI(0);
2907                 list++;
2908         }
2909
2910         return 0;
2911
2912 mem_alloc_failure:
2913         qedf_free_global_queues(qedf);
2914         return status;
2915 }
2916
2917 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf)
2918 {
2919         u8 sq_num_pbl_pages;
2920         u32 sq_mem_size;
2921         u32 cq_mem_size;
2922         u32 cq_num_entries;
2923         int rval;
2924
2925         /*
2926          * The number of completion queues/fastpath interrupts/status blocks
2927          * we allocation is the minimum off:
2928          *
2929          * Number of CPUs
2930          * Number allocated by qed for our PCI function
2931          */
2932         qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf);
2933
2934         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n",
2935                    qedf->num_queues);
2936
2937         qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev,
2938             qedf->num_queues * sizeof(struct qedf_glbl_q_params),
2939             &qedf->hw_p_cpuq, GFP_KERNEL);
2940
2941         if (!qedf->p_cpuq) {
2942                 QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n");
2943                 return 1;
2944         }
2945
2946         rval = qedf_alloc_global_queues(qedf);
2947         if (rval) {
2948                 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation "
2949                           "failed.\n");
2950                 return 1;
2951         }
2952
2953         /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */
2954         sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
2955         sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE);
2956         sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE);
2957
2958         /* Calculate CQ num entries */
2959         cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
2960         cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE);
2961         cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe);
2962
2963         memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params));
2964
2965         /* Setup the value for fcoe PF */
2966         qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS;
2967         qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS;
2968         qedf->pf_params.fcoe_pf_params.glbl_q_params_addr =
2969             (u64)qedf->hw_p_cpuq;
2970         qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages;
2971
2972         qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0;
2973
2974         qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries;
2975         qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues;
2976
2977         /* log_page_size: 12 for 4KB pages */
2978         qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE);
2979
2980         qedf->pf_params.fcoe_pf_params.mtu = 9000;
2981         qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI;
2982         qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI;
2983
2984         /* BDQ address and size */
2985         qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] =
2986             qedf->bdq_pbl_list_dma;
2987         qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] =
2988             qedf->bdq_pbl_list_num_entries;
2989         qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE;
2990
2991         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2992             "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n",
2993             qedf->bdq_pbl_list,
2994             qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0],
2995             qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]);
2996
2997         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2998             "cq_num_entries=%d.\n",
2999             qedf->pf_params.fcoe_pf_params.cq_num_entries);
3000
3001         return 0;
3002 }
3003
3004 /* Free DMA coherent memory for array of queue pointers we pass to qed */
3005 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf)
3006 {
3007         size_t size = 0;
3008
3009         if (qedf->p_cpuq) {
3010                 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params);
3011                 dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq,
3012                     qedf->hw_p_cpuq);
3013         }
3014
3015         qedf_free_global_queues(qedf);
3016
3017         kfree(qedf->global_queues);
3018 }
3019
3020 /*
3021  * PCI driver functions
3022  */
3023
3024 static const struct pci_device_id qedf_pci_tbl[] = {
3025         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) },
3026         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) },
3027         {0}
3028 };
3029 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl);
3030
3031 static struct pci_driver qedf_pci_driver = {
3032         .name = QEDF_MODULE_NAME,
3033         .id_table = qedf_pci_tbl,
3034         .probe = qedf_probe,
3035         .remove = qedf_remove,
3036 };
3037
3038 static int __qedf_probe(struct pci_dev *pdev, int mode)
3039 {
3040         int rc = -EINVAL;
3041         struct fc_lport *lport;
3042         struct qedf_ctx *qedf;
3043         struct Scsi_Host *host;
3044         bool is_vf = false;
3045         struct qed_ll2_params params;
3046         char host_buf[20];
3047         struct qed_link_params link_params;
3048         int status;
3049         void *task_start, *task_end;
3050         struct qed_slowpath_params slowpath_params;
3051         struct qed_probe_params qed_params;
3052         u16 tmp;
3053
3054         /*
3055          * When doing error recovery we didn't reap the lport so don't try
3056          * to reallocate it.
3057          */
3058         if (mode != QEDF_MODE_RECOVERY) {
3059                 lport = libfc_host_alloc(&qedf_host_template,
3060                     sizeof(struct qedf_ctx));
3061
3062                 if (!lport) {
3063                         QEDF_ERR(NULL, "Could not allocate lport.\n");
3064                         rc = -ENOMEM;
3065                         goto err0;
3066                 }
3067
3068                 fc_disc_init(lport);
3069
3070                 /* Initialize qedf_ctx */
3071                 qedf = lport_priv(lport);
3072                 qedf->lport = lport;
3073                 qedf->ctlr.lp = lport;
3074                 qedf->pdev = pdev;
3075                 qedf->dbg_ctx.pdev = pdev;
3076                 qedf->dbg_ctx.host_no = lport->host->host_no;
3077                 spin_lock_init(&qedf->hba_lock);
3078                 INIT_LIST_HEAD(&qedf->fcports);
3079                 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1;
3080                 atomic_set(&qedf->num_offloads, 0);
3081                 qedf->stop_io_on_error = false;
3082                 pci_set_drvdata(pdev, qedf);
3083                 init_completion(&qedf->fipvlan_compl);
3084                 mutex_init(&qedf->stats_mutex);
3085                 mutex_init(&qedf->flush_mutex);
3086
3087                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO,
3088                    "QLogic FastLinQ FCoE Module qedf %s, "
3089                    "FW %d.%d.%d.%d\n", QEDF_VERSION,
3090                    FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
3091                    FW_ENGINEERING_VERSION);
3092         } else {
3093                 /* Init pointers during recovery */
3094                 qedf = pci_get_drvdata(pdev);
3095                 lport = qedf->lport;
3096         }
3097
3098         host = lport->host;
3099
3100         /* Allocate mempool for qedf_io_work structs */
3101         qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN,
3102             qedf_io_work_cache);
3103         if (qedf->io_mempool == NULL) {
3104                 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n");
3105                 goto err1;
3106         }
3107         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n",
3108             qedf->io_mempool);
3109
3110         sprintf(host_buf, "qedf_%u_link",
3111             qedf->lport->host->host_no);
3112         qedf->link_update_wq = create_workqueue(host_buf);
3113         INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update);
3114         INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery);
3115         INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump);
3116         qedf->fipvlan_retries = qedf_fipvlan_retries;
3117         /* Set a default prio in case DCBX doesn't converge */
3118         if (qedf_default_prio > -1) {
3119                 /*
3120                  * This is the case where we pass a modparam in so we want to
3121                  * honor it even if dcbx doesn't converge.
3122                  */
3123                 qedf->prio = qedf_default_prio;
3124         } else
3125                 qedf->prio = QEDF_DEFAULT_PRIO;
3126
3127         /*
3128          * Common probe. Takes care of basic hardware init and pci_*
3129          * functions.
3130          */
3131         memset(&qed_params, 0, sizeof(qed_params));
3132         qed_params.protocol = QED_PROTOCOL_FCOE;
3133         qed_params.dp_module = qedf_dp_module;
3134         qed_params.dp_level = qedf_dp_level;
3135         qed_params.is_vf = is_vf;
3136         qedf->cdev = qed_ops->common->probe(pdev, &qed_params);
3137         if (!qedf->cdev) {
3138                 rc = -ENODEV;
3139                 goto err1;
3140         }
3141
3142         /* Learn information crucial for qedf to progress */
3143         rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
3144         if (rc) {
3145                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n");
3146                 goto err1;
3147         }
3148
3149         /* queue allocation code should come here
3150          * order should be
3151          *      slowpath_start
3152          *      status block allocation
3153          *      interrupt registration (to get min number of queues)
3154          *      set_fcoe_pf_param
3155          *      qed_sp_fcoe_func_start
3156          */
3157         rc = qedf_set_fcoe_pf_param(qedf);
3158         if (rc) {
3159                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n");
3160                 goto err2;
3161         }
3162         qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3163
3164         /* Record BDQ producer doorbell addresses */
3165         qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr;
3166         qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr;
3167         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3168             "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod,
3169             qedf->bdq_secondary_prod);
3170
3171         qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf);
3172
3173         rc = qedf_prepare_sb(qedf);
3174         if (rc) {
3175
3176                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3177                 goto err2;
3178         }
3179
3180         /* Start the Slowpath-process */
3181         slowpath_params.int_mode = QED_INT_MODE_MSIX;
3182         slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER;
3183         slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER;
3184         slowpath_params.drv_rev = QEDF_DRIVER_REV_VER;
3185         slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER;
3186         strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE);
3187         rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params);
3188         if (rc) {
3189                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3190                 goto err2;
3191         }
3192
3193         /*
3194          * update_pf_params needs to be called before and after slowpath
3195          * start
3196          */
3197         qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3198
3199         /* Setup interrupts */
3200         rc = qedf_setup_int(qedf);
3201         if (rc)
3202                 goto err3;
3203
3204         rc = qed_ops->start(qedf->cdev, &qedf->tasks);
3205         if (rc) {
3206                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n");
3207                 goto err4;
3208         }
3209         task_start = qedf_get_task_mem(&qedf->tasks, 0);
3210         task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1);
3211         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, "
3212                    "end=%p block_size=%u.\n", task_start, task_end,
3213                    qedf->tasks.size);
3214
3215         /*
3216          * We need to write the number of BDs in the BDQ we've preallocated so
3217          * the f/w will do a prefetch and we'll get an unsolicited CQE when a
3218          * packet arrives.
3219          */
3220         qedf->bdq_prod_idx = QEDF_BDQ_SIZE;
3221         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3222             "Writing %d to primary and secondary BDQ doorbell registers.\n",
3223             qedf->bdq_prod_idx);
3224         writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod);
3225         tmp = readw(qedf->bdq_primary_prod);
3226         writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod);
3227         tmp = readw(qedf->bdq_secondary_prod);
3228
3229         qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3230
3231         /* Now that the dev_info struct has been filled in set the MAC
3232          * address
3233          */
3234         ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac);
3235         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n",
3236                    qedf->mac);
3237
3238         /*
3239          * Set the WWNN and WWPN in the following way:
3240          *
3241          * If the info we get from qed is non-zero then use that to set the
3242          * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based
3243          * on the MAC address.
3244          */
3245         if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) {
3246                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3247                     "Setting WWPN and WWNN from qed dev_info.\n");
3248                 qedf->wwnn = qedf->dev_info.wwnn;
3249                 qedf->wwpn = qedf->dev_info.wwpn;
3250         } else {
3251                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3252                     "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n");
3253                 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0);
3254                 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0);
3255         }
3256         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,  "WWNN=%016llx "
3257                    "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn);
3258
3259         sprintf(host_buf, "host_%d", host->host_no);
3260         qed_ops->common->set_name(qedf->cdev, host_buf);
3261
3262         /* Allocate cmd mgr */
3263         qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf);
3264         if (!qedf->cmd_mgr) {
3265                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n");
3266                 rc = -ENOMEM;
3267                 goto err5;
3268         }
3269
3270         if (mode != QEDF_MODE_RECOVERY) {
3271                 host->transportt = qedf_fc_transport_template;
3272                 host->max_lun = qedf_max_lun;
3273                 host->max_cmd_len = QEDF_MAX_CDB_LEN;
3274                 host->can_queue = FCOE_PARAMS_NUM_TASKS;
3275                 rc = scsi_add_host(host, &pdev->dev);
3276                 if (rc)
3277                         goto err6;
3278         }
3279
3280         memset(&params, 0, sizeof(params));
3281         params.mtu = 9000;
3282         ether_addr_copy(params.ll2_mac_address, qedf->mac);
3283
3284         /* Start LL2 processing thread */
3285         snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no);
3286         qedf->ll2_recv_wq =
3287                 create_workqueue(host_buf);
3288         if (!qedf->ll2_recv_wq) {
3289                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n");
3290                 rc = -ENOMEM;
3291                 goto err7;
3292         }
3293
3294 #ifdef CONFIG_DEBUG_FS
3295         qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops,
3296                             qedf_dbg_fops);
3297 #endif
3298
3299         /* Start LL2 */
3300         qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf);
3301         rc = qed_ops->ll2->start(qedf->cdev, &params);
3302         if (rc) {
3303                 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n");
3304                 goto err7;
3305         }
3306         set_bit(QEDF_LL2_STARTED, &qedf->flags);
3307
3308         /* Set initial FIP/FCoE VLAN to NULL */
3309         qedf->vlan_id = 0;
3310
3311         /*
3312          * No need to setup fcoe_ctlr or fc_lport objects during recovery since
3313          * they were not reaped during the unload process.
3314          */
3315         if (mode != QEDF_MODE_RECOVERY) {
3316                 /* Setup imbedded fcoe controller */
3317                 qedf_fcoe_ctlr_setup(qedf);
3318
3319                 /* Setup lport */
3320                 rc = qedf_lport_setup(qedf);
3321                 if (rc) {
3322                         QEDF_ERR(&(qedf->dbg_ctx),
3323                             "qedf_lport_setup failed.\n");
3324                         goto err7;
3325                 }
3326         }
3327
3328         sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no);
3329         qedf->timer_work_queue =
3330                 create_workqueue(host_buf);
3331         if (!qedf->timer_work_queue) {
3332                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer "
3333                           "workqueue.\n");
3334                 rc = -ENOMEM;
3335                 goto err7;
3336         }
3337
3338         /* DPC workqueue is not reaped during recovery unload */
3339         if (mode != QEDF_MODE_RECOVERY) {
3340                 sprintf(host_buf, "qedf_%u_dpc",
3341                     qedf->lport->host->host_no);
3342                 qedf->dpc_wq = create_workqueue(host_buf);
3343         }
3344
3345         /*
3346          * GRC dump and sysfs parameters are not reaped during the recovery
3347          * unload process.
3348          */
3349         if (mode != QEDF_MODE_RECOVERY) {
3350                 qedf->grcdump_size =
3351                     qed_ops->common->dbg_all_data_size(qedf->cdev);
3352                 if (qedf->grcdump_size) {
3353                         rc = qedf_alloc_grc_dump_buf(&qedf->grcdump,
3354                             qedf->grcdump_size);
3355                         if (rc) {
3356                                 QEDF_ERR(&(qedf->dbg_ctx),
3357                                     "GRC Dump buffer alloc failed.\n");
3358                                 qedf->grcdump = NULL;
3359                         }
3360
3361                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3362                             "grcdump: addr=%p, size=%u.\n",
3363                             qedf->grcdump, qedf->grcdump_size);
3364                 }
3365                 qedf_create_sysfs_ctx_attr(qedf);
3366
3367                 /* Initialize I/O tracing for this adapter */
3368                 spin_lock_init(&qedf->io_trace_lock);
3369                 qedf->io_trace_idx = 0;
3370         }
3371
3372         init_completion(&qedf->flogi_compl);
3373
3374         status = qed_ops->common->update_drv_state(qedf->cdev, true);
3375         if (status)
3376                 QEDF_ERR(&(qedf->dbg_ctx),
3377                         "Failed to send drv state to MFW.\n");
3378
3379         memset(&link_params, 0, sizeof(struct qed_link_params));
3380         link_params.link_up = true;
3381         status = qed_ops->common->set_link(qedf->cdev, &link_params);
3382         if (status)
3383                 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n");
3384
3385         /* Start/restart discovery */
3386         if (mode == QEDF_MODE_RECOVERY)
3387                 fcoe_ctlr_link_up(&qedf->ctlr);
3388         else
3389                 fc_fabric_login(lport);
3390
3391         /* All good */
3392         return 0;
3393
3394 err7:
3395         if (qedf->ll2_recv_wq)
3396                 destroy_workqueue(qedf->ll2_recv_wq);
3397         fc_remove_host(qedf->lport->host);
3398         scsi_remove_host(qedf->lport->host);
3399 #ifdef CONFIG_DEBUG_FS
3400         qedf_dbg_host_exit(&(qedf->dbg_ctx));
3401 #endif
3402 err6:
3403         qedf_cmd_mgr_free(qedf->cmd_mgr);
3404 err5:
3405         qed_ops->stop(qedf->cdev);
3406 err4:
3407         qedf_free_fcoe_pf_param(qedf);
3408         qedf_sync_free_irqs(qedf);
3409 err3:
3410         qed_ops->common->slowpath_stop(qedf->cdev);
3411 err2:
3412         qed_ops->common->remove(qedf->cdev);
3413 err1:
3414         scsi_host_put(lport->host);
3415 err0:
3416         return rc;
3417 }
3418
3419 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
3420 {
3421         return __qedf_probe(pdev, QEDF_MODE_NORMAL);
3422 }
3423
3424 static void __qedf_remove(struct pci_dev *pdev, int mode)
3425 {
3426         struct qedf_ctx *qedf;
3427         int rc;
3428
3429         if (!pdev) {
3430                 QEDF_ERR(NULL, "pdev is NULL.\n");
3431                 return;
3432         }
3433
3434         qedf = pci_get_drvdata(pdev);
3435
3436         /*
3437          * Prevent race where we're in board disable work and then try to
3438          * rmmod the module.
3439          */
3440         if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
3441                 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n");
3442                 return;
3443         }
3444
3445         if (mode != QEDF_MODE_RECOVERY)
3446                 set_bit(QEDF_UNLOADING, &qedf->flags);
3447
3448         /* Logoff the fabric to upload all connections */
3449         if (mode == QEDF_MODE_RECOVERY)
3450                 fcoe_ctlr_link_down(&qedf->ctlr);
3451         else
3452                 fc_fabric_logoff(qedf->lport);
3453         qedf_wait_for_upload(qedf);
3454
3455 #ifdef CONFIG_DEBUG_FS
3456         qedf_dbg_host_exit(&(qedf->dbg_ctx));
3457 #endif
3458
3459         /* Stop any link update handling */
3460         cancel_delayed_work_sync(&qedf->link_update);
3461         destroy_workqueue(qedf->link_update_wq);
3462         qedf->link_update_wq = NULL;
3463
3464         if (qedf->timer_work_queue)
3465                 destroy_workqueue(qedf->timer_work_queue);
3466
3467         /* Stop Light L2 */
3468         clear_bit(QEDF_LL2_STARTED, &qedf->flags);
3469         qed_ops->ll2->stop(qedf->cdev);
3470         if (qedf->ll2_recv_wq)
3471                 destroy_workqueue(qedf->ll2_recv_wq);
3472
3473         /* Stop fastpath */
3474         qedf_sync_free_irqs(qedf);
3475         qedf_destroy_sb(qedf);
3476
3477         /*
3478          * During recovery don't destroy OS constructs that represent the
3479          * physical port.
3480          */
3481         if (mode != QEDF_MODE_RECOVERY) {
3482                 qedf_free_grc_dump_buf(&qedf->grcdump);
3483                 qedf_remove_sysfs_ctx_attr(qedf);
3484
3485                 /* Remove all SCSI/libfc/libfcoe structures */
3486                 fcoe_ctlr_destroy(&qedf->ctlr);
3487                 fc_lport_destroy(qedf->lport);
3488                 fc_remove_host(qedf->lport->host);
3489                 scsi_remove_host(qedf->lport->host);
3490         }
3491
3492         qedf_cmd_mgr_free(qedf->cmd_mgr);
3493
3494         if (mode != QEDF_MODE_RECOVERY) {
3495                 fc_exch_mgr_free(qedf->lport);
3496                 fc_lport_free_stats(qedf->lport);
3497
3498                 /* Wait for all vports to be reaped */
3499                 qedf_wait_for_vport_destroy(qedf);
3500         }
3501
3502         /*
3503          * Now that all connections have been uploaded we can stop the
3504          * rest of the qed operations
3505          */
3506         qed_ops->stop(qedf->cdev);
3507
3508         if (mode != QEDF_MODE_RECOVERY) {
3509                 if (qedf->dpc_wq) {
3510                         /* Stop general DPC handling */
3511                         destroy_workqueue(qedf->dpc_wq);
3512                         qedf->dpc_wq = NULL;
3513                 }
3514         }
3515
3516         /* Final shutdown for the board */
3517         qedf_free_fcoe_pf_param(qedf);
3518         if (mode != QEDF_MODE_RECOVERY) {
3519                 qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3520                 pci_set_drvdata(pdev, NULL);
3521         }
3522
3523         rc = qed_ops->common->update_drv_state(qedf->cdev, false);
3524         if (rc)
3525                 QEDF_ERR(&(qedf->dbg_ctx),
3526                         "Failed to send drv state to MFW.\n");
3527
3528         qed_ops->common->slowpath_stop(qedf->cdev);
3529         qed_ops->common->remove(qedf->cdev);
3530
3531         mempool_destroy(qedf->io_mempool);
3532
3533         /* Only reap the Scsi_host on a real removal */
3534         if (mode != QEDF_MODE_RECOVERY)
3535                 scsi_host_put(qedf->lport->host);
3536 }
3537
3538 static void qedf_remove(struct pci_dev *pdev)
3539 {
3540         /* Check to make sure this function wasn't already disabled */
3541         if (!atomic_read(&pdev->enable_cnt))
3542                 return;
3543
3544         __qedf_remove(pdev, QEDF_MODE_NORMAL);
3545 }
3546
3547 void qedf_wq_grcdump(struct work_struct *work)
3548 {
3549         struct qedf_ctx *qedf =
3550             container_of(work, struct qedf_ctx, grcdump_work.work);
3551
3552         QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n");
3553         qedf_capture_grc_dump(qedf);
3554 }
3555
3556 /*
3557  * Protocol TLV handler
3558  */
3559 void qedf_get_protocol_tlv_data(void *dev, void *data)
3560 {
3561         struct qedf_ctx *qedf = dev;
3562         struct qed_mfw_tlv_fcoe *fcoe = data;
3563         struct fc_lport *lport = qedf->lport;
3564         struct Scsi_Host *host = lport->host;
3565         struct fc_host_attrs *fc_host = shost_to_fc_host(host);
3566         struct fc_host_statistics *hst;
3567
3568         /* Force a refresh of the fc_host stats including offload stats */
3569         hst = qedf_fc_get_host_stats(host);
3570
3571         fcoe->qos_pri_set = true;
3572         fcoe->qos_pri = 3; /* Hard coded to 3 in driver */
3573
3574         fcoe->ra_tov_set = true;
3575         fcoe->ra_tov = lport->r_a_tov;
3576
3577         fcoe->ed_tov_set = true;
3578         fcoe->ed_tov = lport->e_d_tov;
3579
3580         fcoe->npiv_state_set = true;
3581         fcoe->npiv_state = 1; /* NPIV always enabled */
3582
3583         fcoe->num_npiv_ids_set = true;
3584         fcoe->num_npiv_ids = fc_host->npiv_vports_inuse;
3585
3586         /* Certain attributes we only want to set if we've selected an FCF */
3587         if (qedf->ctlr.sel_fcf) {
3588                 fcoe->switch_name_set = true;
3589                 u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name);
3590         }
3591
3592         fcoe->port_state_set = true;
3593         /* For qedf we're either link down or fabric attach */
3594         if (lport->link_up)
3595                 fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC;
3596         else
3597                 fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE;
3598
3599         fcoe->link_failures_set = true;
3600         fcoe->link_failures = (u16)hst->link_failure_count;
3601
3602         fcoe->fcoe_txq_depth_set = true;
3603         fcoe->fcoe_rxq_depth_set = true;
3604         fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS;
3605         fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS;
3606
3607         fcoe->fcoe_rx_frames_set = true;
3608         fcoe->fcoe_rx_frames = hst->rx_frames;
3609
3610         fcoe->fcoe_tx_frames_set = true;
3611         fcoe->fcoe_tx_frames = hst->tx_frames;
3612
3613         fcoe->fcoe_rx_bytes_set = true;
3614         fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000;
3615
3616         fcoe->fcoe_tx_bytes_set = true;
3617         fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000;
3618
3619         fcoe->crc_count_set = true;
3620         fcoe->crc_count = hst->invalid_crc_count;
3621
3622         fcoe->tx_abts_set = true;
3623         fcoe->tx_abts = hst->fcp_packet_aborts;
3624
3625         fcoe->tx_lun_rst_set = true;
3626         fcoe->tx_lun_rst = qedf->lun_resets;
3627
3628         fcoe->abort_task_sets_set = true;
3629         fcoe->abort_task_sets = qedf->packet_aborts;
3630
3631         fcoe->scsi_busy_set = true;
3632         fcoe->scsi_busy = qedf->busy;
3633
3634         fcoe->scsi_tsk_full_set = true;
3635         fcoe->scsi_tsk_full = qedf->task_set_fulls;
3636 }
3637
3638 /* Generic TLV data callback */
3639 void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
3640 {
3641         struct qedf_ctx *qedf;
3642
3643         if (!dev) {
3644                 QEDF_INFO(NULL, QEDF_LOG_EVT,
3645                           "dev is NULL so ignoring get_generic_tlv_data request.\n");
3646                 return;
3647         }
3648         qedf = (struct qedf_ctx *)dev;
3649
3650         memset(data, 0, sizeof(struct qed_generic_tlvs));
3651         ether_addr_copy(data->mac[0], qedf->mac);
3652 }
3653
3654 /*
3655  * Module Init/Remove
3656  */
3657
3658 static int __init qedf_init(void)
3659 {
3660         int ret;
3661
3662         /* If debug=1 passed, set the default log mask */
3663         if (qedf_debug == QEDF_LOG_DEFAULT)
3664                 qedf_debug = QEDF_DEFAULT_LOG_MASK;
3665
3666         /*
3667          * Check that default prio for FIP/FCoE traffic is between 0..7 if a
3668          * value has been set
3669          */
3670         if (qedf_default_prio > -1)
3671                 if (qedf_default_prio > 7) {
3672                         qedf_default_prio = QEDF_DEFAULT_PRIO;
3673                         QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n",
3674                             QEDF_DEFAULT_PRIO);
3675                 }
3676
3677         /* Print driver banner */
3678         QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR,
3679                    QEDF_VERSION);
3680
3681         /* Create kmem_cache for qedf_io_work structs */
3682         qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache",
3683             sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL);
3684         if (qedf_io_work_cache == NULL) {
3685                 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n");
3686                 goto err1;
3687         }
3688         QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n",
3689             qedf_io_work_cache);
3690
3691         qed_ops = qed_get_fcoe_ops();
3692         if (!qed_ops) {
3693                 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n");
3694                 goto err1;
3695         }
3696
3697 #ifdef CONFIG_DEBUG_FS
3698         qedf_dbg_init("qedf");
3699 #endif
3700
3701         qedf_fc_transport_template =
3702             fc_attach_transport(&qedf_fc_transport_fn);
3703         if (!qedf_fc_transport_template) {
3704                 QEDF_ERR(NULL, "Could not register with FC transport\n");
3705                 goto err2;
3706         }
3707
3708         qedf_fc_vport_transport_template =
3709                 fc_attach_transport(&qedf_fc_vport_transport_fn);
3710         if (!qedf_fc_vport_transport_template) {
3711                 QEDF_ERR(NULL, "Could not register vport template with FC "
3712                           "transport\n");
3713                 goto err3;
3714         }
3715
3716         qedf_io_wq = create_workqueue("qedf_io_wq");
3717         if (!qedf_io_wq) {
3718                 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n");
3719                 goto err4;
3720         }
3721
3722         qedf_cb_ops.get_login_failures = qedf_get_login_failures;
3723
3724         ret = pci_register_driver(&qedf_pci_driver);
3725         if (ret) {
3726                 QEDF_ERR(NULL, "Failed to register driver\n");
3727                 goto err5;
3728         }
3729
3730         return 0;
3731
3732 err5:
3733         destroy_workqueue(qedf_io_wq);
3734 err4:
3735         fc_release_transport(qedf_fc_vport_transport_template);
3736 err3:
3737         fc_release_transport(qedf_fc_transport_template);
3738 err2:
3739 #ifdef CONFIG_DEBUG_FS
3740         qedf_dbg_exit();
3741 #endif
3742         qed_put_fcoe_ops();
3743 err1:
3744         return -EINVAL;
3745 }
3746
3747 static void __exit qedf_cleanup(void)
3748 {
3749         pci_unregister_driver(&qedf_pci_driver);
3750
3751         destroy_workqueue(qedf_io_wq);
3752
3753         fc_release_transport(qedf_fc_vport_transport_template);
3754         fc_release_transport(qedf_fc_transport_template);
3755 #ifdef CONFIG_DEBUG_FS
3756         qedf_dbg_exit();
3757 #endif
3758         qed_put_fcoe_ops();
3759
3760         kmem_cache_destroy(qedf_io_work_cache);
3761 }
3762
3763 MODULE_LICENSE("GPL");
3764 MODULE_DESCRIPTION("QLogic QEDF 25/40/50/100Gb FCoE Driver");
3765 MODULE_AUTHOR("QLogic Corporation");
3766 MODULE_VERSION(QEDF_VERSION);
3767 module_init(qedf_init);
3768 module_exit(qedf_cleanup);