drivers/scsi/qedf/qedf_main.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  *  QLogic FCoE Offload Driver
   4  *  Copyright (c) 2016-2018 Cavium Inc.
   5  */
   6 #include <linux/init.h>
   7 #include <linux/kernel.h>
   8 #include <linux/module.h>
   9 #include <linux/pci.h>
  10 #include <linux/device.h>
  11 #include <linux/highmem.h>
  12 #include <linux/crc32.h>
  13 #include <linux/interrupt.h>
  14 #include <linux/list.h>
  15 #include <linux/kthread.h>
  16 #include <linux/phylink.h>
  17 #include <scsi/libfc.h>
  18 #include <scsi/scsi_host.h>
  19 #include <scsi/fc_frame.h>
  20 #include <linux/if_ether.h>
  21 #include <linux/if_vlan.h>
  22 #include <linux/cpu.h>
  23 #include "qedf.h"
  24 #include "qedf_dbg.h"
  25 #include <uapi/linux/pci_regs.h>
  26
  27 const struct qed_fcoe_ops *qed_ops;
  28
  29 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id);
  30 static void qedf_remove(struct pci_dev *pdev);
  31 static void qedf_shutdown(struct pci_dev *pdev);
  32 static void qedf_schedule_recovery_handler(void *dev);
  33 static void qedf_recovery_handler(struct work_struct *work);
  34
  35 /*
  36  * Driver module parameters.
  37  */
  38 static unsigned int qedf_dev_loss_tmo = 60;
  39 module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO);
  40 MODULE_PARM_DESC(dev_loss_tmo,  " dev_loss_tmo setting for attached "
  41         "remote ports (default 60)");
  42
  43 uint qedf_debug = QEDF_LOG_INFO;
  44 module_param_named(debug, qedf_debug, uint, S_IRUGO|S_IWUSR);
  45 MODULE_PARM_DESC(debug, " Debug mask. Pass '1' to enable default debugging"
  46         " mask");
  47
  48 static uint qedf_fipvlan_retries = 60;
  49 module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO);
  50 MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt "
  51         "before giving up (default 60)");
  52
  53 static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN;
  54 module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO);
  55 MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails "
  56         "(default 1002).");
  57
  58 static int qedf_default_prio = -1;
  59 module_param_named(default_prio, qedf_default_prio, int, S_IRUGO);
  60 MODULE_PARM_DESC(default_prio, " Override 802.1q priority for FIP and FCoE"
  61         " traffic (value between 0 and 7, default 3).");
  62
  63 uint qedf_dump_frames;
  64 module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR);
  65 MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames "
  66         "(default off)");
  67
  68 static uint qedf_queue_depth;
  69 module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO);
  70 MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered "
  71         "by the qedf driver. Default is 0 (use OS default).");
  72
  73 uint qedf_io_tracing;
  74 module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR);
  75 MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions "
  76         "into trace buffer. (default off).");
  77
  78 static uint qedf_max_lun = MAX_FIBRE_LUNS;
  79 module_param_named(max_lun, qedf_max_lun, int, S_IRUGO);
  80 MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver "
  81         "supports. (default 0xffffffff)");
  82
  83 uint qedf_link_down_tmo;
  84 module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO);
  85 MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the "
  86         "link is down by N seconds.");
  87
  88 bool qedf_retry_delay;
  89 module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR);
  90 MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry "
  91         "delay handling (default off).");
  92
  93 static bool qedf_dcbx_no_wait;
  94 module_param_named(dcbx_no_wait, qedf_dcbx_no_wait, bool, S_IRUGO | S_IWUSR);
  95 MODULE_PARM_DESC(dcbx_no_wait, " Do not wait for DCBX convergence to start "
  96         "sending FIP VLAN requests on link up (Default: off).");
  97
  98 static uint qedf_dp_module;
  99 module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO);
 100 MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed "
 101         "qed module during probe.");
 102
 103 static uint qedf_dp_level = QED_LEVEL_NOTICE;
 104 module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO);
 105 MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module  "
 106         "during probe (0-3: 0 more verbose).");
 107
 108 static bool qedf_enable_recovery = true;
 109 module_param_named(enable_recovery, qedf_enable_recovery,
 110                 bool, S_IRUGO | S_IWUSR);
 111 MODULE_PARM_DESC(enable_recovery, "Enable/disable recovery on driver/firmware "
 112                 "interface level errors 0 = Disabled, 1 = Enabled (Default: 1).");
 113
 114 struct workqueue_struct *qedf_io_wq;
 115
 116 static struct fcoe_percpu_s qedf_global;
 117 static DEFINE_SPINLOCK(qedf_global_lock);
 118
 119 static struct kmem_cache *qedf_io_work_cache;
 120
 121 void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id)
 122 {
 123         int vlan_id_tmp = 0;
 124
 125         vlan_id_tmp = vlan_id  | (qedf->prio << VLAN_PRIO_SHIFT);
 126         qedf->vlan_id = vlan_id_tmp;
 127         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 128                   "Setting vlan_id=0x%04x prio=%d.\n",
 129                   vlan_id_tmp, qedf->prio);
 130 }
 131
 132 /* Returns true if we have a valid vlan, false otherwise */
 133 static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf)
 134 {
 135
 136         while (qedf->fipvlan_retries--) {
 137                 /* This is to catch if link goes down during fipvlan retries */
 138                 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
 139                         QEDF_ERR(&qedf->dbg_ctx, "Link not up.\n");
 140                         return false;
 141                 }
 142
 143                 if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
 144                         QEDF_ERR(&qedf->dbg_ctx, "Driver unloading.\n");
 145                         return false;
 146                 }
 147
 148                 if (qedf->vlan_id > 0) {
 149                         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 150                                   "vlan = 0x%x already set, calling ctlr_link_up.\n",
 151                                   qedf->vlan_id);
 152                         if (atomic_read(&qedf->link_state) == QEDF_LINK_UP)
 153                                 fcoe_ctlr_link_up(&qedf->ctlr);
 154                         return true;
 155                 }
 156
 157                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 158                            "Retry %d.\n", qedf->fipvlan_retries);
 159                 init_completion(&qedf->fipvlan_compl);
 160                 qedf_fcoe_send_vlan_req(qedf);
 161                 wait_for_completion_timeout(&qedf->fipvlan_compl, 1 * HZ);
 162         }
 163
 164         return false;
 165 }
 166
 167 static void qedf_handle_link_update(struct work_struct *work)
 168 {
 169         struct qedf_ctx *qedf =
 170             container_of(work, struct qedf_ctx, link_update.work);
 171         int rc;
 172
 173         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Entered. link_state=%d.\n",
 174                   atomic_read(&qedf->link_state));
 175
 176         if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
 177                 rc = qedf_initiate_fipvlan_req(qedf);
 178                 if (rc)
 179                         return;
 180
 181                 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
 182                         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 183                                   "Link is down, resetting vlan_id.\n");
 184                         qedf->vlan_id = 0;
 185                         return;
 186                 }
 187
 188                 /*
 189                  * If we get here then we never received a repsonse to our
 190                  * fip vlan request so set the vlan_id to the default and
 191                  * tell FCoE that the link is up
 192                  */
 193                 QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN "
 194                            "response, falling back to default VLAN %d.\n",
 195                            qedf_fallback_vlan);
 196                 qedf_set_vlan_id(qedf, qedf_fallback_vlan);
 197
 198                 /*
 199                  * Zero out data_src_addr so we'll update it with the new
 200                  * lport port_id
 201                  */
 202                 eth_zero_addr(qedf->data_src_addr);
 203                 fcoe_ctlr_link_up(&qedf->ctlr);
 204         } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
 205                 /*
 206                  * If we hit here and link_down_tmo_valid is still 1 it means
 207                  * that link_down_tmo timed out so set it to 0 to make sure any
 208                  * other readers have accurate state.
 209                  */
 210                 atomic_set(&qedf->link_down_tmo_valid, 0);
 211                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 212                     "Calling fcoe_ctlr_link_down().\n");
 213                 fcoe_ctlr_link_down(&qedf->ctlr);
 214                 if (qedf_wait_for_upload(qedf) == false)
 215                         QEDF_ERR(&qedf->dbg_ctx,
 216                                  "Could not upload all sessions.\n");
 217                 /* Reset the number of FIP VLAN retries */
 218                 qedf->fipvlan_retries = qedf_fipvlan_retries;
 219         }
 220 }
 221
 222 #define QEDF_FCOE_MAC_METHOD_GRANGED_MAC                1
 223 #define QEDF_FCOE_MAC_METHOD_FCF_MAP                    2
 224 #define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC               3
 225 static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp)
 226 {
 227         u8 *granted_mac;
 228         struct fc_frame_header *fh = fc_frame_header_get(fp);
 229         u8 fc_map[3];
 230         int method = 0;
 231
 232         /* Get granted MAC address from FIP FLOGI payload */
 233         granted_mac = fr_cb(fp)->granted_mac;
 234
 235         /*
 236          * We set the source MAC for FCoE traffic based on the Granted MAC
 237          * address from the switch.
 238          *
 239          * If granted_mac is non-zero, we used that.
 240          * If the granted_mac is zeroed out, created the FCoE MAC based on
 241          * the sel_fcf->fc_map and the d_id fo the FLOGI frame.
 242          * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the
 243          * d_id of the FLOGI frame.
 244          */
 245         if (!is_zero_ether_addr(granted_mac)) {
 246                 ether_addr_copy(qedf->data_src_addr, granted_mac);
 247                 method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC;
 248         } else if (qedf->ctlr.sel_fcf->fc_map != 0) {
 249                 hton24(fc_map, qedf->ctlr.sel_fcf->fc_map);
 250                 qedf->data_src_addr[0] = fc_map[0];
 251                 qedf->data_src_addr[1] = fc_map[1];
 252                 qedf->data_src_addr[2] = fc_map[2];
 253                 qedf->data_src_addr[3] = fh->fh_d_id[0];
 254                 qedf->data_src_addr[4] = fh->fh_d_id[1];
 255                 qedf->data_src_addr[5] = fh->fh_d_id[2];
 256                 method = QEDF_FCOE_MAC_METHOD_FCF_MAP;
 257         } else {
 258                 fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id);
 259                 method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC;
 260         }
 261
 262         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 263             "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method);
 264 }
 265
 266 static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp,
 267         void *arg)
 268 {
 269         struct fc_exch *exch = fc_seq_exch(seq);
 270         struct fc_lport *lport = exch->lp;
 271         struct qedf_ctx *qedf = lport_priv(lport);
 272
 273         if (!qedf) {
 274                 QEDF_ERR(NULL, "qedf is NULL.\n");
 275                 return;
 276         }
 277
 278         /*
 279          * If ERR_PTR is set then don't try to stat anything as it will cause
 280          * a crash when we access fp.
 281          */
 282         if (IS_ERR(fp)) {
 283                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
 284                     "fp has IS_ERR() set.\n");
 285                 goto skip_stat;
 286         }
 287
 288         /* Log stats for FLOGI reject */
 289         if (fc_frame_payload_op(fp) == ELS_LS_RJT)
 290                 qedf->flogi_failed++;
 291         else if (fc_frame_payload_op(fp) == ELS_LS_ACC) {
 292                 /* Set the source MAC we will use for FCoE traffic */
 293                 qedf_set_data_src_addr(qedf, fp);
 294                 qedf->flogi_pending = 0;
 295         }
 296
 297         /* Complete flogi_compl so we can proceed to sending ADISCs */
 298         complete(&qedf->flogi_compl);
 299
 300 skip_stat:
 301         /* Report response to libfc */
 302         fc_lport_flogi_resp(seq, fp, lport);
 303 }
 304
 305 static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did,
 306         struct fc_frame *fp, unsigned int op,
 307         void (*resp)(struct fc_seq *,
 308         struct fc_frame *,
 309         void *),
 310         void *arg, u32 timeout)
 311 {
 312         struct qedf_ctx *qedf = lport_priv(lport);
 313
 314         /*
 315          * Intercept FLOGI for statistic purposes. Note we use the resp
 316          * callback to tell if this is really a flogi.
 317          */
 318         if (resp == fc_lport_flogi_resp) {
 319                 qedf->flogi_cnt++;
 320                 if (qedf->flogi_pending >= QEDF_FLOGI_RETRY_CNT) {
 321                         schedule_delayed_work(&qedf->stag_work, 2);
 322                         return NULL;
 323                 }
 324                 qedf->flogi_pending++;
 325                 return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp,
 326                     arg, timeout);
 327         }
 328
 329         return fc_elsct_send(lport, did, fp, op, resp, arg, timeout);
 330 }
 331
 332 int qedf_send_flogi(struct qedf_ctx *qedf)
 333 {
 334         struct fc_lport *lport;
 335         struct fc_frame *fp;
 336
 337         lport = qedf->lport;
 338
 339         if (!lport->tt.elsct_send) {
 340                 QEDF_ERR(&qedf->dbg_ctx, "tt.elsct_send not set.\n");
 341                 return -EINVAL;
 342         }
 343
 344         fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi));
 345         if (!fp) {
 346                 QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n");
 347                 return -ENOMEM;
 348         }
 349
 350         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
 351             "Sending FLOGI to reestablish session with switch.\n");
 352         lport->tt.elsct_send(lport, FC_FID_FLOGI, fp,
 353             ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov);
 354
 355         init_completion(&qedf->flogi_compl);
 356
 357         return 0;
 358 }
 359
 360 /*
 361  * This function is called if link_down_tmo is in use.  If we get a link up and
 362  * link_down_tmo has not expired then use just FLOGI/ADISC to recover our
 363  * sessions with targets.  Otherwise, just call fcoe_ctlr_link_up().
 364  */
 365 static void qedf_link_recovery(struct work_struct *work)
 366 {
 367         struct qedf_ctx *qedf =
 368             container_of(work, struct qedf_ctx, link_recovery.work);
 369         struct fc_lport *lport = qedf->lport;
 370         struct fc_rport_priv *rdata;
 371         bool rc;
 372         int retries = 30;
 373         int rval, i;
 374         struct list_head rdata_login_list;
 375
 376         INIT_LIST_HEAD(&rdata_login_list);
 377
 378         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 379             "Link down tmo did not expire.\n");
 380
 381         /*
 382          * Essentially reset the fcoe_ctlr here without affecting the state
 383          * of the libfc structs.
 384          */
 385         qedf->ctlr.state = FIP_ST_LINK_WAIT;
 386         fcoe_ctlr_link_down(&qedf->ctlr);
 387
 388         /*
 389          * Bring the link up before we send the fipvlan request so libfcoe
 390          * can select a new fcf in parallel
 391          */
 392         fcoe_ctlr_link_up(&qedf->ctlr);
 393
 394         /* Since the link when down and up to verify which vlan we're on */
 395         qedf->fipvlan_retries = qedf_fipvlan_retries;
 396         rc = qedf_initiate_fipvlan_req(qedf);
 397         /* If getting the VLAN fails, set the VLAN to the fallback one */
 398         if (!rc)
 399                 qedf_set_vlan_id(qedf, qedf_fallback_vlan);
 400
 401         /*
 402          * We need to wait for an FCF to be selected due to the
 403          * fcoe_ctlr_link_up other the FLOGI will be rejected.
 404          */
 405         while (retries > 0) {
 406                 if (qedf->ctlr.sel_fcf) {
 407                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 408                             "FCF reselected, proceeding with FLOGI.\n");
 409                         break;
 410                 }
 411                 msleep(500);
 412                 retries--;
 413         }
 414
 415         if (retries < 1) {
 416                 QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for "
 417                     "FCF selection.\n");
 418                 return;
 419         }
 420
 421         rval = qedf_send_flogi(qedf);
 422         if (rval)
 423                 return;
 424
 425         /* Wait for FLOGI completion before proceeding with sending ADISCs */
 426         i = wait_for_completion_timeout(&qedf->flogi_compl,
 427             qedf->lport->r_a_tov);
 428         if (i == 0) {
 429                 QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n");
 430                 return;
 431         }
 432
 433         /*
 434          * Call lport->tt.rport_login which will cause libfc to send an
 435          * ADISC since the rport is in state ready.
 436          */
 437         mutex_lock(&lport->disc.disc_mutex);
 438         list_for_each_entry_rcu(rdata, &lport->disc.rports, peers) {
 439                 if (kref_get_unless_zero(&rdata->kref)) {
 440                         fc_rport_login(rdata);
 441                         kref_put(&rdata->kref, fc_rport_destroy);
 442                 }
 443         }
 444         mutex_unlock(&lport->disc.disc_mutex);
 445 }
 446
 447 static void qedf_update_link_speed(struct qedf_ctx *qedf,
 448         struct qed_link_output *link)
 449 {
 450         __ETHTOOL_DECLARE_LINK_MODE_MASK(sup_caps);
 451         struct fc_lport *lport = qedf->lport;
 452
 453         lport->link_speed = FC_PORTSPEED_UNKNOWN;
 454         lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN;
 455
 456         /* Set fc_host link speed */
 457         switch (link->speed) {
 458         case 10000:
 459                 lport->link_speed = FC_PORTSPEED_10GBIT;
 460                 break;
 461         case 25000:
 462                 lport->link_speed = FC_PORTSPEED_25GBIT;
 463                 break;
 464         case 40000:
 465                 lport->link_speed = FC_PORTSPEED_40GBIT;
 466                 break;
 467         case 50000:
 468                 lport->link_speed = FC_PORTSPEED_50GBIT;
 469                 break;
 470         case 100000:
 471                 lport->link_speed = FC_PORTSPEED_100GBIT;
 472                 break;
 473         case 20000:
 474                 lport->link_speed = FC_PORTSPEED_20GBIT;
 475                 break;
 476         default:
 477                 lport->link_speed = FC_PORTSPEED_UNKNOWN;
 478                 break;
 479         }
 480
 481         /*
 482          * Set supported link speed by querying the supported
 483          * capabilities of the link.
 484          */
 485
 486         phylink_zero(sup_caps);
 487         phylink_set(sup_caps, 10000baseT_Full);
 488         phylink_set(sup_caps, 10000baseKX4_Full);
 489         phylink_set(sup_caps, 10000baseR_FEC);
 490         phylink_set(sup_caps, 10000baseCR_Full);
 491         phylink_set(sup_caps, 10000baseSR_Full);
 492         phylink_set(sup_caps, 10000baseLR_Full);
 493         phylink_set(sup_caps, 10000baseLRM_Full);
 494         phylink_set(sup_caps, 10000baseKR_Full);
 495
 496         if (linkmode_intersects(link->supported_caps, sup_caps))
 497                 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT;
 498
 499         phylink_zero(sup_caps);
 500         phylink_set(sup_caps, 25000baseKR_Full);
 501         phylink_set(sup_caps, 25000baseCR_Full);
 502         phylink_set(sup_caps, 25000baseSR_Full);
 503
 504         if (linkmode_intersects(link->supported_caps, sup_caps))
 505                 lport->link_supported_speeds |= FC_PORTSPEED_25GBIT;
 506
 507         phylink_zero(sup_caps);
 508         phylink_set(sup_caps, 40000baseLR4_Full);
 509         phylink_set(sup_caps, 40000baseKR4_Full);
 510         phylink_set(sup_caps, 40000baseCR4_Full);
 511         phylink_set(sup_caps, 40000baseSR4_Full);
 512
 513         if (linkmode_intersects(link->supported_caps, sup_caps))
 514                 lport->link_supported_speeds |= FC_PORTSPEED_40GBIT;
 515
 516         phylink_zero(sup_caps);
 517         phylink_set(sup_caps, 50000baseKR2_Full);
 518         phylink_set(sup_caps, 50000baseCR2_Full);
 519         phylink_set(sup_caps, 50000baseSR2_Full);
 520
 521         if (linkmode_intersects(link->supported_caps, sup_caps))
 522                 lport->link_supported_speeds |= FC_PORTSPEED_50GBIT;
 523
 524         phylink_zero(sup_caps);
 525         phylink_set(sup_caps, 100000baseKR4_Full);
 526         phylink_set(sup_caps, 100000baseSR4_Full);
 527         phylink_set(sup_caps, 100000baseCR4_Full);
 528         phylink_set(sup_caps, 100000baseLR4_ER4_Full);
 529
 530         if (linkmode_intersects(link->supported_caps, sup_caps))
 531                 lport->link_supported_speeds |= FC_PORTSPEED_100GBIT;
 532
 533         phylink_zero(sup_caps);
 534         phylink_set(sup_caps, 20000baseKR2_Full);
 535
 536         if (linkmode_intersects(link->supported_caps, sup_caps))
 537                 lport->link_supported_speeds |= FC_PORTSPEED_20GBIT;
 538
 539         if (lport->host && lport->host->shost_data)
 540                 fc_host_supported_speeds(lport->host) =
 541                         lport->link_supported_speeds;
 542 }
 543
 544 static void qedf_bw_update(void *dev)
 545 {
 546         struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
 547         struct qed_link_output link;
 548
 549         /* Get the latest status of the link */
 550         qed_ops->common->get_link(qedf->cdev, &link);
 551
 552         if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
 553                 QEDF_ERR(&qedf->dbg_ctx,
 554                          "Ignore link update, driver getting unload.\n");
 555                 return;
 556         }
 557
 558         if (link.link_up) {
 559                 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP)
 560                         qedf_update_link_speed(qedf, &link);
 561                 else
 562                         QEDF_ERR(&qedf->dbg_ctx,
 563                                  "Ignore bw update, link is down.\n");
 564
 565         } else {
 566                 QEDF_ERR(&qedf->dbg_ctx, "link_up is not set.\n");
 567         }
 568 }
 569
 570 static void qedf_link_update(void *dev, struct qed_link_output *link)
 571 {
 572         struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
 573
 574         /*
 575          * Prevent race where we're removing the module and we get link update
 576          * for qed.
 577          */
 578         if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
 579                 QEDF_ERR(&qedf->dbg_ctx,
 580                          "Ignore link update, driver getting unload.\n");
 581                 return;
 582         }
 583
 584         if (link->link_up) {
 585                 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
 586                         QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC,
 587                             "Ignoring link up event as link is already up.\n");
 588                         return;
 589                 }
 590                 QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n",
 591                     link->speed / 1000);
 592
 593                 /* Cancel any pending link down work */
 594                 cancel_delayed_work(&qedf->link_update);
 595
 596                 atomic_set(&qedf->link_state, QEDF_LINK_UP);
 597                 qedf_update_link_speed(qedf, link);
 598
 599                 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE ||
 600                     qedf_dcbx_no_wait) {
 601                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 602                              "DCBx done.\n");
 603                         if (atomic_read(&qedf->link_down_tmo_valid) > 0)
 604                                 queue_delayed_work(qedf->link_update_wq,
 605                                     &qedf->link_recovery, 0);
 606                         else
 607                                 queue_delayed_work(qedf->link_update_wq,
 608                                     &qedf->link_update, 0);
 609                         atomic_set(&qedf->link_down_tmo_valid, 0);
 610                 }
 611
 612         } else {
 613                 QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n");
 614
 615                 atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
 616                 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
 617                 /*
 618                  * Flag that we're waiting for the link to come back up before
 619                  * informing the fcoe layer of the event.
 620                  */
 621                 if (qedf_link_down_tmo > 0) {
 622                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 623                             "Starting link down tmo.\n");
 624                         atomic_set(&qedf->link_down_tmo_valid, 1);
 625                 }
 626                 qedf->vlan_id = 0;
 627                 qedf_update_link_speed(qedf, link);
 628                 queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 629                     qedf_link_down_tmo * HZ);
 630         }
 631 }
 632
 633
 634 static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type)
 635 {
 636         struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
 637         u8 tmp_prio;
 638
 639         QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe "
 640             "prio=%d.\n", get->operational.valid, get->operational.enabled,
 641             get->operational.app_prio.fcoe);
 642
 643         if (get->operational.enabled && get->operational.valid) {
 644                 /* If DCBX was already negotiated on link up then just exit */
 645                 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) {
 646                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 647                             "DCBX already set on link up.\n");
 648                         return;
 649                 }
 650
 651                 atomic_set(&qedf->dcbx, QEDF_DCBX_DONE);
 652
 653                 /*
 654                  * Set the 8021q priority in the following manner:
 655                  *
 656                  * 1. If a modparam is set use that
 657                  * 2. If the value is not between 0..7 use the default
 658                  * 3. Use the priority we get from the DCBX app tag
 659                  */
 660                 tmp_prio = get->operational.app_prio.fcoe;
 661                 if (qedf_default_prio > -1)
 662                         qedf->prio = qedf_default_prio;
 663                 else if (tmp_prio > 7) {
 664                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 665                             "FIP/FCoE prio %d out of range, setting to %d.\n",
 666                             tmp_prio, QEDF_DEFAULT_PRIO);
 667                         qedf->prio = QEDF_DEFAULT_PRIO;
 668                 } else
 669                         qedf->prio = tmp_prio;
 670
 671                 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP &&
 672                     !qedf_dcbx_no_wait) {
 673                         if (atomic_read(&qedf->link_down_tmo_valid) > 0)
 674                                 queue_delayed_work(qedf->link_update_wq,
 675                                     &qedf->link_recovery, 0);
 676                         else
 677                                 queue_delayed_work(qedf->link_update_wq,
 678                                     &qedf->link_update, 0);
 679                         atomic_set(&qedf->link_down_tmo_valid, 0);
 680                 }
 681         }
 682
 683 }
 684
 685 static u32 qedf_get_login_failures(void *cookie)
 686 {
 687         struct qedf_ctx *qedf;
 688
 689         qedf = (struct qedf_ctx *)cookie;
 690         return qedf->flogi_failed;
 691 }
 692
 693 static struct qed_fcoe_cb_ops qedf_cb_ops = {
 694         {
 695                 .link_update = qedf_link_update,
 696                 .bw_update = qedf_bw_update,
 697                 .schedule_recovery_handler = qedf_schedule_recovery_handler,
 698                 .dcbx_aen = qedf_dcbx_handler,
 699                 .get_generic_tlv_data = qedf_get_generic_tlv_data,
 700                 .get_protocol_tlv_data = qedf_get_protocol_tlv_data,
 701                 .schedule_hw_err_handler = qedf_schedule_hw_err_handler,
 702         }
 703 };
 704
 705 /*
 706  * Various transport templates.
 707  */
 708
 709 static struct scsi_transport_template *qedf_fc_transport_template;
 710 static struct scsi_transport_template *qedf_fc_vport_transport_template;
 711
 712 /*
 713  * SCSI EH handlers
 714  */
 715 static int qedf_eh_abort(struct scsi_cmnd *sc_cmd)
 716 {
 717         struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
 718         struct fc_lport *lport;
 719         struct qedf_ctx *qedf;
 720         struct qedf_ioreq *io_req;
 721         struct fc_rport_libfc_priv *rp = rport->dd_data;
 722         struct fc_rport_priv *rdata;
 723         struct qedf_rport *fcport = NULL;
 724         int rc = FAILED;
 725         int wait_count = 100;
 726         int refcount = 0;
 727         int rval;
 728         int got_ref = 0;
 729
 730         lport = shost_priv(sc_cmd->device->host);
 731         qedf = (struct qedf_ctx *)lport_priv(lport);
 732
 733         /* rport and tgt are allocated together, so tgt should be non-NULL */
 734         fcport = (struct qedf_rport *)&rp[1];
 735         rdata = fcport->rdata;
 736         if (!rdata || !kref_get_unless_zero(&rdata->kref)) {
 737                 QEDF_ERR(&qedf->dbg_ctx, "stale rport, sc_cmd=%p\n", sc_cmd);
 738                 rc = SUCCESS;
 739                 goto out;
 740         }
 741
 742
 743         io_req = qedf_priv(sc_cmd)->io_req;
 744         if (!io_req) {
 745                 QEDF_ERR(&qedf->dbg_ctx,
 746                          "sc_cmd not queued with lld, sc_cmd=%p op=0x%02x, port_id=%06x\n",
 747                          sc_cmd, sc_cmd->cmnd[0],
 748                          rdata->ids.port_id);
 749                 rc = SUCCESS;
 750                 goto drop_rdata_kref;
 751         }
 752
 753         rval = kref_get_unless_zero(&io_req->refcount); /* ID: 005 */
 754         if (rval)
 755                 got_ref = 1;
 756
 757         /* If we got a valid io_req, confirm it belongs to this sc_cmd. */
 758         if (!rval || io_req->sc_cmd != sc_cmd) {
 759                 QEDF_ERR(&qedf->dbg_ctx,
 760                          "Freed/Incorrect io_req, io_req->sc_cmd=%p, sc_cmd=%p, port_id=%06x, bailing out.\n",
 761                          io_req->sc_cmd, sc_cmd, rdata->ids.port_id);
 762
 763                 goto drop_rdata_kref;
 764         }
 765
 766         if (fc_remote_port_chkready(rport)) {
 767                 refcount = kref_read(&io_req->refcount);
 768                 QEDF_ERR(&qedf->dbg_ctx,
 769                          "rport not ready, io_req=%p, xid=0x%x sc_cmd=%p op=0x%02x, refcount=%d, port_id=%06x\n",
 770                          io_req, io_req->xid, sc_cmd, sc_cmd->cmnd[0],
 771                          refcount, rdata->ids.port_id);
 772
 773                 goto drop_rdata_kref;
 774         }
 775
 776         rc = fc_block_scsi_eh(sc_cmd);
 777         if (rc)
 778                 goto drop_rdata_kref;
 779
 780         if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) {
 781                 QEDF_ERR(&qedf->dbg_ctx,
 782                          "Connection uploading, xid=0x%x., port_id=%06x\n",
 783                          io_req->xid, rdata->ids.port_id);
 784                 while (io_req->sc_cmd && (wait_count != 0)) {
 785                         msleep(100);
 786                         wait_count--;
 787                 }
 788                 if (wait_count) {
 789                         QEDF_ERR(&qedf->dbg_ctx, "ABTS succeeded\n");
 790                         rc = SUCCESS;
 791                 } else {
 792                         QEDF_ERR(&qedf->dbg_ctx, "ABTS failed\n");
 793                         rc = FAILED;
 794                 }
 795                 goto drop_rdata_kref;
 796         }
 797
 798         if (lport->state != LPORT_ST_READY || !(lport->link_up)) {
 799                 QEDF_ERR(&qedf->dbg_ctx, "link not ready.\n");
 800                 goto drop_rdata_kref;
 801         }
 802
 803         QEDF_ERR(&qedf->dbg_ctx,
 804                  "Aborting io_req=%p sc_cmd=%p xid=0x%x fp_idx=%d, port_id=%06x.\n",
 805                  io_req, sc_cmd, io_req->xid, io_req->fp_idx,
 806                  rdata->ids.port_id);
 807
 808         if (qedf->stop_io_on_error) {
 809                 qedf_stop_all_io(qedf);
 810                 rc = SUCCESS;
 811                 goto drop_rdata_kref;
 812         }
 813
 814         init_completion(&io_req->abts_done);
 815         rval = qedf_initiate_abts(io_req, true);
 816         if (rval) {
 817                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n");
 818                 /*
 819                  * If we fail to queue the ABTS then return this command to
 820                  * the SCSI layer as it will own and free the xid
 821                  */
 822                 rc = SUCCESS;
 823                 qedf_scsi_done(qedf, io_req, DID_ERROR);
 824                 goto drop_rdata_kref;
 825         }
 826
 827         wait_for_completion(&io_req->abts_done);
 828
 829         if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS ||
 830             io_req->event == QEDF_IOREQ_EV_ABORT_FAILED ||
 831             io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) {
 832                 /*
 833                  * If we get a reponse to the abort this is success from
 834                  * the perspective that all references to the command have
 835                  * been removed from the driver and firmware
 836                  */
 837                 rc = SUCCESS;
 838         } else {
 839                 /* If the abort and cleanup failed then return a failure */
 840                 rc = FAILED;
 841         }
 842
 843         if (rc == SUCCESS)
 844                 QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n",
 845                           io_req->xid);
 846         else
 847                 QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n",
 848                           io_req->xid);
 849
 850 drop_rdata_kref:
 851         kref_put(&rdata->kref, fc_rport_destroy);
 852 out:
 853         if (got_ref)
 854                 kref_put(&io_req->refcount, qedf_release_cmd);
 855         return rc;
 856 }
 857
 858 static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd)
 859 {
 860         QEDF_ERR(NULL, "%d:0:%d:%lld: TARGET RESET Issued...",
 861                  sc_cmd->device->host->host_no, sc_cmd->device->id,
 862                  sc_cmd->device->lun);
 863         return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET);
 864 }
 865
 866 static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd)
 867 {
 868         QEDF_ERR(NULL, "%d:0:%d:%lld: LUN RESET Issued... ",
 869                  sc_cmd->device->host->host_no, sc_cmd->device->id,
 870                  sc_cmd->device->lun);
 871         return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET);
 872 }
 873
 874 bool qedf_wait_for_upload(struct qedf_ctx *qedf)
 875 {
 876         struct qedf_rport *fcport;
 877         int wait_cnt = 120;
 878
 879         while (wait_cnt--) {
 880                 if (atomic_read(&qedf->num_offloads))
 881                         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 882                                   "Waiting for all uploads to complete num_offloads = 0x%x.\n",
 883                                   atomic_read(&qedf->num_offloads));
 884                 else
 885                         return true;
 886                 msleep(500);
 887         }
 888
 889         rcu_read_lock();
 890         list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
 891                 if (test_bit(QEDF_RPORT_SESSION_READY,
 892                                        &fcport->flags)) {
 893                         if (fcport->rdata)
 894                                 QEDF_ERR(&qedf->dbg_ctx,
 895                                          "Waiting for fcport %p portid=%06x.\n",
 896                                          fcport, fcport->rdata->ids.port_id);
 897                         } else {
 898                                 QEDF_ERR(&qedf->dbg_ctx,
 899                                          "Waiting for fcport %p.\n", fcport);
 900                         }
 901         }
 902
 903         rcu_read_unlock();
 904         return false;
 905 }
 906
 907 /* Performs soft reset of qedf_ctx by simulating a link down/up */
 908 void qedf_ctx_soft_reset(struct fc_lport *lport)
 909 {
 910         struct qedf_ctx *qedf;
 911         struct qed_link_output if_link;
 912
 913         if (lport->vport) {
 914                 printk_ratelimited("Cannot issue host reset on NPIV port.\n");
 915                 return;
 916         }
 917
 918         qedf = lport_priv(lport);
 919
 920         qedf->flogi_pending = 0;
 921         /* For host reset, essentially do a soft link up/down */
 922         atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
 923         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 924                   "Queuing link down work.\n");
 925         queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 926             0);
 927
 928         if (qedf_wait_for_upload(qedf) == false) {
 929                 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n");
 930                 WARN_ON(atomic_read(&qedf->num_offloads));
 931         }
 932
 933         /* Before setting link up query physical link state */
 934         qed_ops->common->get_link(qedf->cdev, &if_link);
 935         /* Bail if the physical link is not up */
 936         if (!if_link.link_up) {
 937                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 938                           "Physical link is not up.\n");
 939                 return;
 940         }
 941         /* Flush and wait to make sure link down is processed */
 942         flush_delayed_work(&qedf->link_update);
 943         msleep(500);
 944
 945         atomic_set(&qedf->link_state, QEDF_LINK_UP);
 946         qedf->vlan_id  = 0;
 947         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 948                   "Queue link up work.\n");
 949         queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 950             0);
 951 }
 952
 953 /* Reset the host by gracefully logging out and then logging back in */
 954 static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd)
 955 {
 956         struct fc_lport *lport;
 957         struct qedf_ctx *qedf;
 958
 959         lport = shost_priv(sc_cmd->device->host);
 960         qedf = lport_priv(lport);
 961
 962         if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN ||
 963             test_bit(QEDF_UNLOADING, &qedf->flags))
 964                 return FAILED;
 965
 966         QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued...");
 967
 968         qedf_ctx_soft_reset(lport);
 969
 970         return SUCCESS;
 971 }
 972
 973 static int qedf_slave_configure(struct scsi_device *sdev)
 974 {
 975         if (qedf_queue_depth) {
 976                 scsi_change_queue_depth(sdev, qedf_queue_depth);
 977         }
 978
 979         return 0;
 980 }
 981
 982 static struct scsi_host_template qedf_host_template = {
 983         .module         = THIS_MODULE,
 984         .name           = QEDF_MODULE_NAME,
 985         .this_id        = -1,
 986         .cmd_per_lun    = 32,
 987         .max_sectors    = 0xffff,
 988         .queuecommand   = qedf_queuecommand,
 989         .shost_groups   = qedf_host_groups,
 990         .eh_abort_handler       = qedf_eh_abort,
 991         .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */
 992         .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */
 993         .eh_host_reset_handler  = qedf_eh_host_reset,
 994         .slave_configure        = qedf_slave_configure,
 995         .dma_boundary = QED_HW_DMA_BOUNDARY,
 996         .sg_tablesize = QEDF_MAX_BDS_PER_CMD,
 997         .can_queue = FCOE_PARAMS_NUM_TASKS,
 998         .change_queue_depth = scsi_change_queue_depth,
 999         .cmd_size = sizeof(struct qedf_cmd_priv),
1000 };
1001
1002 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen)
1003 {
1004         int rc;
1005
1006         spin_lock(&qedf_global_lock);
1007         rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global);
1008         spin_unlock(&qedf_global_lock);
1009
1010         return rc;
1011 }
1012
1013 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id)
1014 {
1015         struct qedf_rport *fcport;
1016         struct fc_rport_priv *rdata;
1017
1018         rcu_read_lock();
1019         list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
1020                 rdata = fcport->rdata;
1021                 if (rdata == NULL)
1022                         continue;
1023                 if (rdata->ids.port_id == port_id) {
1024                         rcu_read_unlock();
1025                         return fcport;
1026                 }
1027         }
1028         rcu_read_unlock();
1029
1030         /* Return NULL to caller to let them know fcport was not found */
1031         return NULL;
1032 }
1033
1034 /* Transmits an ELS frame over an offloaded session */
1035 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp)
1036 {
1037         struct fc_frame_header *fh;
1038         int rc = 0;
1039
1040         fh = fc_frame_header_get(fp);
1041         if ((fh->fh_type == FC_TYPE_ELS) &&
1042             (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
1043                 switch (fc_frame_payload_op(fp)) {
1044                 case ELS_ADISC:
1045                         qedf_send_adisc(fcport, fp);
1046                         rc = 1;
1047                         break;
1048                 }
1049         }
1050
1051         return rc;
1052 }
1053
1054 /*
1055  * qedf_xmit - qedf FCoE frame transmit function
1056  */
1057 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp)
1058 {
1059         struct fc_lport         *base_lport;
1060         struct qedf_ctx         *qedf;
1061         struct ethhdr           *eh;
1062         struct fcoe_crc_eof     *cp;
1063         struct sk_buff          *skb;
1064         struct fc_frame_header  *fh;
1065         struct fcoe_hdr         *hp;
1066         u8                      sof, eof;
1067         u32                     crc;
1068         unsigned int            hlen, tlen, elen;
1069         int                     wlen;
1070         struct fc_lport *tmp_lport;
1071         struct fc_lport *vn_port = NULL;
1072         struct qedf_rport *fcport;
1073         int rc;
1074         u16 vlan_tci = 0;
1075
1076         qedf = (struct qedf_ctx *)lport_priv(lport);
1077
1078         fh = fc_frame_header_get(fp);
1079         skb = fp_skb(fp);
1080
1081         /* Filter out traffic to other NPIV ports on the same host */
1082         if (lport->vport)
1083                 base_lport = shost_priv(vport_to_shost(lport->vport));
1084         else
1085                 base_lport = lport;
1086
1087         /* Flag if the destination is the base port */
1088         if (base_lport->port_id == ntoh24(fh->fh_d_id)) {
1089                 vn_port = base_lport;
1090         } else {
1091                 /* Got through the list of vports attached to the base_lport
1092                  * and see if we have a match with the destination address.
1093                  */
1094                 list_for_each_entry(tmp_lport, &base_lport->vports, list) {
1095                         if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) {
1096                                 vn_port = tmp_lport;
1097                                 break;
1098                         }
1099                 }
1100         }
1101         if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) {
1102                 struct fc_rport_priv *rdata = NULL;
1103
1104                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
1105                     "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id));
1106                 kfree_skb(skb);
1107                 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id));
1108                 if (rdata) {
1109                         rdata->retries = lport->max_rport_retry_count;
1110                         kref_put(&rdata->kref, fc_rport_destroy);
1111                 }
1112                 return -EINVAL;
1113         }
1114         /* End NPIV filtering */
1115
1116         if (!qedf->ctlr.sel_fcf) {
1117                 kfree_skb(skb);
1118                 return 0;
1119         }
1120
1121         if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) {
1122                 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n");
1123                 kfree_skb(skb);
1124                 return 0;
1125         }
1126
1127         if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
1128                 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n");
1129                 kfree_skb(skb);
1130                 return 0;
1131         }
1132
1133         if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
1134                 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb))
1135                         return 0;
1136         }
1137
1138         /* Check to see if this needs to be sent on an offloaded session */
1139         fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
1140
1141         if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1142                 rc = qedf_xmit_l2_frame(fcport, fp);
1143                 /*
1144                  * If the frame was successfully sent over the middle path
1145                  * then do not try to also send it over the LL2 path
1146                  */
1147                 if (rc)
1148                         return 0;
1149         }
1150
1151         sof = fr_sof(fp);
1152         eof = fr_eof(fp);
1153
1154         elen = sizeof(struct ethhdr);
1155         hlen = sizeof(struct fcoe_hdr);
1156         tlen = sizeof(struct fcoe_crc_eof);
1157         wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
1158
1159         skb->ip_summed = CHECKSUM_NONE;
1160         crc = fcoe_fc_crc(fp);
1161
1162         /* copy port crc and eof to the skb buff */
1163         if (skb_is_nonlinear(skb)) {
1164                 skb_frag_t *frag;
1165
1166                 if (qedf_get_paged_crc_eof(skb, tlen)) {
1167                         kfree_skb(skb);
1168                         return -ENOMEM;
1169                 }
1170                 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
1171                 cp = kmap_atomic(skb_frag_page(frag)) + skb_frag_off(frag);
1172         } else {
1173                 cp = skb_put(skb, tlen);
1174         }
1175
1176         memset(cp, 0, sizeof(*cp));
1177         cp->fcoe_eof = eof;
1178         cp->fcoe_crc32 = cpu_to_le32(~crc);
1179         if (skb_is_nonlinear(skb)) {
1180                 kunmap_atomic(cp);
1181                 cp = NULL;
1182         }
1183
1184
1185         /* adjust skb network/transport offsets to match mac/fcoe/port */
1186         skb_push(skb, elen + hlen);
1187         skb_reset_mac_header(skb);
1188         skb_reset_network_header(skb);
1189         skb->mac_len = elen;
1190         skb->protocol = htons(ETH_P_FCOE);
1191
1192         /*
1193          * Add VLAN tag to non-offload FCoE frame based on current stored VLAN
1194          * for FIP/FCoE traffic.
1195          */
1196         __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id);
1197
1198         /* fill up mac and fcoe headers */
1199         eh = eth_hdr(skb);
1200         eh->h_proto = htons(ETH_P_FCOE);
1201         if (qedf->ctlr.map_dest)
1202                 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
1203         else
1204                 /* insert GW address */
1205                 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr);
1206
1207         /* Set the source MAC address */
1208         ether_addr_copy(eh->h_source, qedf->data_src_addr);
1209
1210         hp = (struct fcoe_hdr *)(eh + 1);
1211         memset(hp, 0, sizeof(*hp));
1212         if (FC_FCOE_VER)
1213                 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
1214         hp->fcoe_sof = sof;
1215
1216         /*update tx stats */
1217         this_cpu_inc(lport->stats->TxFrames);
1218         this_cpu_add(lport->stats->TxWords, wlen);
1219
1220         /* Get VLAN ID from skb for printing purposes */
1221         __vlan_hwaccel_get_tag(skb, &vlan_tci);
1222
1223         /* send down to lld */
1224         fr_dev(fp) = lport;
1225         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: "
1226             "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n",
1227             ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type,
1228             vlan_tci);
1229         if (qedf_dump_frames)
1230                 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
1231                     1, skb->data, skb->len, false);
1232         rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, 0);
1233         if (rc) {
1234                 QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n", rc);
1235                 kfree_skb(skb);
1236                 return rc;
1237         }
1238
1239         return 0;
1240 }
1241
1242 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1243 {
1244         int rval = 0;
1245         u32 *pbl;
1246         dma_addr_t page;
1247         int num_pages;
1248
1249         /* Calculate appropriate queue and PBL sizes */
1250         fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
1251         fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE);
1252         fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) *
1253             sizeof(void *);
1254         fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE;
1255
1256         fcport->sq = dma_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1257                                         &fcport->sq_dma, GFP_KERNEL);
1258         if (!fcport->sq) {
1259                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n");
1260                 rval = 1;
1261                 goto out;
1262         }
1263
1264         fcport->sq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
1265                                             fcport->sq_pbl_size,
1266                                             &fcport->sq_pbl_dma, GFP_KERNEL);
1267         if (!fcport->sq_pbl) {
1268                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n");
1269                 rval = 1;
1270                 goto out_free_sq;
1271         }
1272
1273         /* Create PBL */
1274         num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE;
1275         page = fcport->sq_dma;
1276         pbl = (u32 *)fcport->sq_pbl;
1277
1278         while (num_pages--) {
1279                 *pbl = U64_LO(page);
1280                 pbl++;
1281                 *pbl = U64_HI(page);
1282                 pbl++;
1283                 page += QEDF_PAGE_SIZE;
1284         }
1285
1286         return rval;
1287
1288 out_free_sq:
1289         dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq,
1290             fcport->sq_dma);
1291 out:
1292         return rval;
1293 }
1294
1295 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1296 {
1297         if (fcport->sq_pbl)
1298                 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size,
1299                     fcport->sq_pbl, fcport->sq_pbl_dma);
1300         if (fcport->sq)
1301                 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1302                     fcport->sq, fcport->sq_dma);
1303 }
1304
1305 static int qedf_offload_connection(struct qedf_ctx *qedf,
1306         struct qedf_rport *fcport)
1307 {
1308         struct qed_fcoe_params_offload conn_info;
1309         u32 port_id;
1310         int rval;
1311         uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe));
1312
1313         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection "
1314                    "portid=%06x.\n", fcport->rdata->ids.port_id);
1315         rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle,
1316             &fcport->fw_cid, &fcport->p_doorbell);
1317         if (rval) {
1318                 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection "
1319                            "for portid=%06x.\n", fcport->rdata->ids.port_id);
1320                 rval = 1; /* For some reason qed returns 0 on failure here */
1321                 goto out;
1322         }
1323
1324         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x "
1325                    "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id,
1326                    fcport->fw_cid, fcport->handle);
1327
1328         memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload));
1329
1330         /* Fill in the offload connection info */
1331         conn_info.sq_pbl_addr = fcport->sq_pbl_dma;
1332
1333         conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl);
1334         conn_info.sq_next_page_addr =
1335             (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8));
1336
1337         /* Need to use our FCoE MAC for the offload session */
1338         ether_addr_copy(conn_info.src_mac, qedf->data_src_addr);
1339
1340         ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr);
1341
1342         conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size;
1343         conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov;
1344         conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */
1345         conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size;
1346
1347         /* Set VLAN data */
1348         conn_info.vlan_tag = qedf->vlan_id <<
1349             FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT;
1350         conn_info.vlan_tag |=
1351             qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT;
1352         conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK <<
1353             FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT);
1354
1355         /* Set host port source id */
1356         port_id = fc_host_port_id(qedf->lport->host);
1357         fcport->sid = port_id;
1358         conn_info.s_id.addr_hi = (port_id & 0x000000FF);
1359         conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1360         conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1361
1362         conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq;
1363
1364         /* Set remote port destination id */
1365         port_id = fcport->rdata->rport->port_id;
1366         conn_info.d_id.addr_hi = (port_id & 0x000000FF);
1367         conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1368         conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1369
1370         conn_info.def_q_idx = 0; /* Default index for send queue? */
1371
1372         /* Set FC-TAPE specific flags if needed */
1373         if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) {
1374                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN,
1375                     "Enable CONF, REC for portid=%06x.\n",
1376                     fcport->rdata->ids.port_id);
1377                 conn_info.flags |= 1 <<
1378                     FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT;
1379                 conn_info.flags |=
1380                     ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
1381                     FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT;
1382         }
1383
1384         rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info);
1385         if (rval) {
1386                 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection "
1387                            "for portid=%06x.\n", fcport->rdata->ids.port_id);
1388                 goto out_free_conn;
1389         } else
1390                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload "
1391                            "succeeded portid=%06x total_sqe=%d.\n",
1392                            fcport->rdata->ids.port_id, total_sqe);
1393
1394         spin_lock_init(&fcport->rport_lock);
1395         atomic_set(&fcport->free_sqes, total_sqe);
1396         return 0;
1397 out_free_conn:
1398         qed_ops->release_conn(qedf->cdev, fcport->handle);
1399 out:
1400         return rval;
1401 }
1402
1403 #define QEDF_TERM_BUFF_SIZE             10
1404 static void qedf_upload_connection(struct qedf_ctx *qedf,
1405         struct qedf_rport *fcport)
1406 {
1407         void *term_params;
1408         dma_addr_t term_params_dma;
1409
1410         /* Term params needs to be a DMA coherent buffer as qed shared the
1411          * physical DMA address with the firmware. The buffer may be used in
1412          * the receive path so we may eventually have to move this.
1413          */
1414         term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE,
1415                 &term_params_dma, GFP_KERNEL);
1416         if (!term_params)
1417                 return;
1418
1419         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection "
1420                    "port_id=%06x.\n", fcport->rdata->ids.port_id);
1421
1422         qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma);
1423         qed_ops->release_conn(qedf->cdev, fcport->handle);
1424
1425         dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params,
1426             term_params_dma);
1427 }
1428
1429 static void qedf_cleanup_fcport(struct qedf_ctx *qedf,
1430         struct qedf_rport *fcport)
1431 {
1432         struct fc_rport_priv *rdata = fcport->rdata;
1433
1434         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n",
1435             fcport->rdata->ids.port_id);
1436
1437         /* Flush any remaining i/o's before we upload the connection */
1438         qedf_flush_active_ios(fcport, -1);
1439
1440         if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags))
1441                 qedf_upload_connection(qedf, fcport);
1442         qedf_free_sq(qedf, fcport);
1443         fcport->rdata = NULL;
1444         fcport->qedf = NULL;
1445         kref_put(&rdata->kref, fc_rport_destroy);
1446 }
1447
1448 /*
1449  * This event_callback is called after successful completion of libfc
1450  * initiated target login. qedf can proceed with initiating the session
1451  * establishment.
1452  */
1453 static void qedf_rport_event_handler(struct fc_lport *lport,
1454                                 struct fc_rport_priv *rdata,
1455                                 enum fc_rport_event event)
1456 {
1457         struct qedf_ctx *qedf = lport_priv(lport);
1458         struct fc_rport *rport = rdata->rport;
1459         struct fc_rport_libfc_priv *rp;
1460         struct qedf_rport *fcport;
1461         u32 port_id;
1462         int rval;
1463         unsigned long flags;
1464
1465         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, "
1466                    "port_id = 0x%x\n", event, rdata->ids.port_id);
1467
1468         switch (event) {
1469         case RPORT_EV_READY:
1470                 if (!rport) {
1471                         QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n");
1472                         break;
1473                 }
1474
1475                 rp = rport->dd_data;
1476                 fcport = (struct qedf_rport *)&rp[1];
1477                 fcport->qedf = qedf;
1478
1479                 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) {
1480                         QEDF_ERR(&(qedf->dbg_ctx), "Not offloading "
1481                             "portid=0x%x as max number of offloaded sessions "
1482                             "reached.\n", rdata->ids.port_id);
1483                         return;
1484                 }
1485
1486                 /*
1487                  * Don't try to offload the session again. Can happen when we
1488                  * get an ADISC
1489                  */
1490                 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1491                         QEDF_WARN(&(qedf->dbg_ctx), "Session already "
1492                                    "offloaded, portid=0x%x.\n",
1493                                    rdata->ids.port_id);
1494                         return;
1495                 }
1496
1497                 if (rport->port_id == FC_FID_DIR_SERV) {
1498                         /*
1499                          * qedf_rport structure doesn't exist for
1500                          * directory server.
1501                          * We should not come here, as lport will
1502                          * take care of fabric login
1503                          */
1504                         QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not "
1505                             "exist for dir server port_id=%x\n",
1506                             rdata->ids.port_id);
1507                         break;
1508                 }
1509
1510                 if (rdata->spp_type != FC_TYPE_FCP) {
1511                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1512                             "Not offloading since spp type isn't FCP\n");
1513                         break;
1514                 }
1515                 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
1516                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1517                             "Not FCP target so not offloading\n");
1518                         break;
1519                 }
1520
1521                 /* Initial reference held on entry, so this can't fail */
1522                 kref_get(&rdata->kref);
1523                 fcport->rdata = rdata;
1524                 fcport->rport = rport;
1525
1526                 rval = qedf_alloc_sq(qedf, fcport);
1527                 if (rval) {
1528                         qedf_cleanup_fcport(qedf, fcport);
1529                         break;
1530                 }
1531
1532                 /* Set device type */
1533                 if (rdata->flags & FC_RP_FLAGS_RETRY &&
1534                     rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET &&
1535                     !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) {
1536                         fcport->dev_type = QEDF_RPORT_TYPE_TAPE;
1537                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1538                             "portid=%06x is a TAPE device.\n",
1539                             rdata->ids.port_id);
1540                 } else {
1541                         fcport->dev_type = QEDF_RPORT_TYPE_DISK;
1542                 }
1543
1544                 rval = qedf_offload_connection(qedf, fcport);
1545                 if (rval) {
1546                         qedf_cleanup_fcport(qedf, fcport);
1547                         break;
1548                 }
1549
1550                 /* Add fcport to list of qedf_ctx list of offloaded ports */
1551                 spin_lock_irqsave(&qedf->hba_lock, flags);
1552                 list_add_rcu(&fcport->peers, &qedf->fcports);
1553                 spin_unlock_irqrestore(&qedf->hba_lock, flags);
1554
1555                 /*
1556                  * Set the session ready bit to let everyone know that this
1557                  * connection is ready for I/O
1558                  */
1559                 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags);
1560                 atomic_inc(&qedf->num_offloads);
1561
1562                 break;
1563         case RPORT_EV_LOGO:
1564         case RPORT_EV_FAILED:
1565         case RPORT_EV_STOP:
1566                 port_id = rdata->ids.port_id;
1567                 if (port_id == FC_FID_DIR_SERV)
1568                         break;
1569
1570                 if (rdata->spp_type != FC_TYPE_FCP) {
1571                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1572                             "No action since spp type isn't FCP\n");
1573                         break;
1574                 }
1575                 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
1576                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1577                             "Not FCP target so no action\n");
1578                         break;
1579                 }
1580
1581                 if (!rport) {
1582                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1583                             "port_id=%x - rport notcreated Yet!!\n", port_id);
1584                         break;
1585                 }
1586                 rp = rport->dd_data;
1587                 /*
1588                  * Perform session upload. Note that rdata->peers is already
1589                  * removed from disc->rports list before we get this event.
1590                  */
1591                 fcport = (struct qedf_rport *)&rp[1];
1592
1593                 spin_lock_irqsave(&fcport->rport_lock, flags);
1594                 /* Only free this fcport if it is offloaded already */
1595                 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) &&
1596                     !test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1597                     &fcport->flags)) {
1598                         set_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1599                                 &fcport->flags);
1600                         spin_unlock_irqrestore(&fcport->rport_lock, flags);
1601                         qedf_cleanup_fcport(qedf, fcport);
1602                         /*
1603                          * Remove fcport to list of qedf_ctx list of offloaded
1604                          * ports
1605                          */
1606                         spin_lock_irqsave(&qedf->hba_lock, flags);
1607                         list_del_rcu(&fcport->peers);
1608                         spin_unlock_irqrestore(&qedf->hba_lock, flags);
1609
1610                         clear_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1611                             &fcport->flags);
1612                         atomic_dec(&qedf->num_offloads);
1613                 } else {
1614                         spin_unlock_irqrestore(&fcport->rport_lock, flags);
1615                 }
1616                 break;
1617
1618         case RPORT_EV_NONE:
1619                 break;
1620         }
1621 }
1622
1623 static void qedf_abort_io(struct fc_lport *lport)
1624 {
1625         /* NO-OP but need to fill in the template */
1626 }
1627
1628 static void qedf_fcp_cleanup(struct fc_lport *lport)
1629 {
1630         /*
1631          * NO-OP but need to fill in template to prevent a NULL
1632          * function pointer dereference during link down. I/Os
1633          * will be flushed when port is uploaded.
1634          */
1635 }
1636
1637 static struct libfc_function_template qedf_lport_template = {
1638         .frame_send             = qedf_xmit,
1639         .fcp_abort_io           = qedf_abort_io,
1640         .fcp_cleanup            = qedf_fcp_cleanup,
1641         .rport_event_callback   = qedf_rport_event_handler,
1642         .elsct_send             = qedf_elsct_send,
1643 };
1644
1645 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf)
1646 {
1647         fcoe_ctlr_init(&qedf->ctlr, FIP_MODE_AUTO);
1648
1649         qedf->ctlr.send = qedf_fip_send;
1650         qedf->ctlr.get_src_addr = qedf_get_src_mac;
1651         ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac);
1652 }
1653
1654 static void qedf_setup_fdmi(struct qedf_ctx *qedf)
1655 {
1656         struct fc_lport *lport = qedf->lport;
1657         u8 buf[8];
1658         int pos;
1659         uint32_t i;
1660
1661         /*
1662          * fdmi_enabled needs to be set for libfc
1663          * to execute FDMI registration
1664          */
1665         lport->fdmi_enabled = 1;
1666
1667         /*
1668          * Setup the necessary fc_host attributes to that will be used to fill
1669          * in the FDMI information.
1670          */
1671
1672         /* Get the PCI-e Device Serial Number Capability */
1673         pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN);
1674         if (pos) {
1675                 pos += 4;
1676                 for (i = 0; i < 8; i++)
1677                         pci_read_config_byte(qedf->pdev, pos + i, &buf[i]);
1678
1679                 snprintf(fc_host_serial_number(lport->host),
1680                     FC_SERIAL_NUMBER_SIZE,
1681                     "%02X%02X%02X%02X%02X%02X%02X%02X",
1682                     buf[7], buf[6], buf[5], buf[4],
1683                     buf[3], buf[2], buf[1], buf[0]);
1684         } else
1685                 snprintf(fc_host_serial_number(lport->host),
1686                     FC_SERIAL_NUMBER_SIZE, "Unknown");
1687
1688         snprintf(fc_host_manufacturer(lport->host),
1689             FC_SERIAL_NUMBER_SIZE, "%s", "Marvell Semiconductor Inc.");
1690
1691         if (qedf->pdev->device == QL45xxx) {
1692                 snprintf(fc_host_model(lport->host),
1693                         FC_SYMBOLIC_NAME_SIZE, "%s", "QL45xxx");
1694
1695                 snprintf(fc_host_model_description(lport->host),
1696                         FC_SYMBOLIC_NAME_SIZE, "%s",
1697                         "Marvell FastLinQ QL45xxx FCoE Adapter");
1698         }
1699
1700         if (qedf->pdev->device == QL41xxx) {
1701                 snprintf(fc_host_model(lport->host),
1702                         FC_SYMBOLIC_NAME_SIZE, "%s", "QL41xxx");
1703
1704                 snprintf(fc_host_model_description(lport->host),
1705                         FC_SYMBOLIC_NAME_SIZE, "%s",
1706                         "Marvell FastLinQ QL41xxx FCoE Adapter");
1707         }
1708
1709         snprintf(fc_host_hardware_version(lport->host),
1710             FC_VERSION_STRING_SIZE, "Rev %d", qedf->pdev->revision);
1711
1712         snprintf(fc_host_driver_version(lport->host),
1713             FC_VERSION_STRING_SIZE, "%s", QEDF_VERSION);
1714
1715         snprintf(fc_host_firmware_version(lport->host),
1716             FC_VERSION_STRING_SIZE, "%d.%d.%d.%d",
1717             FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
1718             FW_ENGINEERING_VERSION);
1719
1720         snprintf(fc_host_vendor_identifier(lport->host),
1721                 FC_VENDOR_IDENTIFIER, "%s", "Marvell");
1722
1723 }
1724
1725 static int qedf_lport_setup(struct qedf_ctx *qedf)
1726 {
1727         struct fc_lport *lport = qedf->lport;
1728
1729         lport->link_up = 0;
1730         lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1731         lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1732         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1733             FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1734         lport->boot_time = jiffies;
1735         lport->e_d_tov = 2 * 1000;
1736         lport->r_a_tov = 10 * 1000;
1737
1738         /* Set NPIV support */
1739         lport->does_npiv = 1;
1740         fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV;
1741
1742         fc_set_wwnn(lport, qedf->wwnn);
1743         fc_set_wwpn(lport, qedf->wwpn);
1744
1745         if (fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0)) {
1746                 QEDF_ERR(&qedf->dbg_ctx,
1747                          "fcoe_libfc_config failed.\n");
1748                 return -ENOMEM;
1749         }
1750
1751         /* Allocate the exchange manager */
1752         fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_PARAMS_NUM_TASKS,
1753                           0xfffe, NULL);
1754
1755         if (fc_lport_init_stats(lport))
1756                 return -ENOMEM;
1757
1758         /* Finish lport config */
1759         fc_lport_config(lport);
1760
1761         /* Set max frame size */
1762         fc_set_mfs(lport, QEDF_MFS);
1763         fc_host_maxframe_size(lport->host) = lport->mfs;
1764
1765         /* Set default dev_loss_tmo based on module parameter */
1766         fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo;
1767
1768         /* Set symbolic node name */
1769         if (qedf->pdev->device == QL45xxx)
1770                 snprintf(fc_host_symbolic_name(lport->host), 256,
1771                         "Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION);
1772
1773         if (qedf->pdev->device == QL41xxx)
1774                 snprintf(fc_host_symbolic_name(lport->host), 256,
1775                         "Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION);
1776
1777         qedf_setup_fdmi(qedf);
1778
1779         return 0;
1780 }
1781
1782 /*
1783  * NPIV functions
1784  */
1785
1786 static int qedf_vport_libfc_config(struct fc_vport *vport,
1787         struct fc_lport *lport)
1788 {
1789         lport->link_up = 0;
1790         lport->qfull = 0;
1791         lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1792         lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1793         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1794             FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1795         lport->boot_time = jiffies;
1796         lport->e_d_tov = 2 * 1000;
1797         lport->r_a_tov = 10 * 1000;
1798         lport->does_npiv = 1; /* Temporary until we add NPIV support */
1799
1800         /* Allocate stats for vport */
1801         if (fc_lport_init_stats(lport))
1802                 return -ENOMEM;
1803
1804         /* Finish lport config */
1805         fc_lport_config(lport);
1806
1807         /* offload related configuration */
1808         lport->crc_offload = 0;
1809         lport->seq_offload = 0;
1810         lport->lro_enabled = 0;
1811         lport->lro_xid = 0;
1812         lport->lso_max = 0;
1813
1814         return 0;
1815 }
1816
1817 static int qedf_vport_create(struct fc_vport *vport, bool disabled)
1818 {
1819         struct Scsi_Host *shost = vport_to_shost(vport);
1820         struct fc_lport *n_port = shost_priv(shost);
1821         struct fc_lport *vn_port;
1822         struct qedf_ctx *base_qedf = lport_priv(n_port);
1823         struct qedf_ctx *vport_qedf;
1824
1825         char buf[32];
1826         int rc = 0;
1827
1828         rc = fcoe_validate_vport_create(vport);
1829         if (rc) {
1830                 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1831                 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, "
1832                            "WWPN (0x%s) already exists.\n", buf);
1833                 return rc;
1834         }
1835
1836         if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) {
1837                 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport "
1838                            "because link is not up.\n");
1839                 return -EIO;
1840         }
1841
1842         vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx));
1843         if (!vn_port) {
1844                 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport "
1845                            "for vport.\n");
1846                 return -ENOMEM;
1847         }
1848
1849         fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1850         QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n",
1851             buf);
1852
1853         /* Copy some fields from base_qedf */
1854         vport_qedf = lport_priv(vn_port);
1855         memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx));
1856
1857         /* Set qedf data specific to this vport */
1858         vport_qedf->lport = vn_port;
1859         /* Use same hba_lock as base_qedf */
1860         vport_qedf->hba_lock = base_qedf->hba_lock;
1861         vport_qedf->pdev = base_qedf->pdev;
1862         vport_qedf->cmd_mgr = base_qedf->cmd_mgr;
1863         init_completion(&vport_qedf->flogi_compl);
1864         INIT_LIST_HEAD(&vport_qedf->fcports);
1865         INIT_DELAYED_WORK(&vport_qedf->stag_work, qedf_stag_change_work);
1866
1867         rc = qedf_vport_libfc_config(vport, vn_port);
1868         if (rc) {
1869                 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory "
1870                     "for lport stats.\n");
1871                 goto err;
1872         }
1873
1874         fc_set_wwnn(vn_port, vport->node_name);
1875         fc_set_wwpn(vn_port, vport->port_name);
1876         vport_qedf->wwnn = vn_port->wwnn;
1877         vport_qedf->wwpn = vn_port->wwpn;
1878
1879         vn_port->host->transportt = qedf_fc_vport_transport_template;
1880         vn_port->host->can_queue = FCOE_PARAMS_NUM_TASKS;
1881         vn_port->host->max_lun = qedf_max_lun;
1882         vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD;
1883         vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN;
1884         vn_port->host->max_id = QEDF_MAX_SESSIONS;
1885
1886         rc = scsi_add_host(vn_port->host, &vport->dev);
1887         if (rc) {
1888                 QEDF_WARN(&base_qedf->dbg_ctx,
1889                           "Error adding Scsi_Host rc=0x%x.\n", rc);
1890                 goto err;
1891         }
1892
1893         /* Set default dev_loss_tmo based on module parameter */
1894         fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo;
1895
1896         /* Init libfc stuffs */
1897         memcpy(&vn_port->tt, &qedf_lport_template,
1898                 sizeof(qedf_lport_template));
1899         fc_exch_init(vn_port);
1900         fc_elsct_init(vn_port);
1901         fc_lport_init(vn_port);
1902         fc_disc_init(vn_port);
1903         fc_disc_config(vn_port, vn_port);
1904
1905
1906         /* Allocate the exchange manager */
1907         shost = vport_to_shost(vport);
1908         n_port = shost_priv(shost);
1909         fc_exch_mgr_list_clone(n_port, vn_port);
1910
1911         /* Set max frame size */
1912         fc_set_mfs(vn_port, QEDF_MFS);
1913
1914         fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN;
1915
1916         if (disabled) {
1917                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1918         } else {
1919                 vn_port->boot_time = jiffies;
1920                 fc_fabric_login(vn_port);
1921                 fc_vport_setlink(vn_port);
1922         }
1923
1924         QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n",
1925                    vn_port);
1926
1927         /* Set up debug context for vport */
1928         vport_qedf->dbg_ctx.host_no = vn_port->host->host_no;
1929         vport_qedf->dbg_ctx.pdev = base_qedf->pdev;
1930
1931         return 0;
1932
1933 err:
1934         scsi_host_put(vn_port->host);
1935         return rc;
1936 }
1937
1938 static int qedf_vport_destroy(struct fc_vport *vport)
1939 {
1940         struct Scsi_Host *shost = vport_to_shost(vport);
1941         struct fc_lport *n_port = shost_priv(shost);
1942         struct fc_lport *vn_port = vport->dd_data;
1943         struct qedf_ctx *qedf = lport_priv(vn_port);
1944
1945         if (!qedf) {
1946                 QEDF_ERR(NULL, "qedf is NULL.\n");
1947                 goto out;
1948         }
1949
1950         /* Set unloading bit on vport qedf_ctx to prevent more I/O */
1951         set_bit(QEDF_UNLOADING, &qedf->flags);
1952
1953         mutex_lock(&n_port->lp_mutex);
1954         list_del(&vn_port->list);
1955         mutex_unlock(&n_port->lp_mutex);
1956
1957         fc_fabric_logoff(vn_port);
1958         fc_lport_destroy(vn_port);
1959
1960         /* Detach from scsi-ml */
1961         fc_remove_host(vn_port->host);
1962         scsi_remove_host(vn_port->host);
1963
1964         /*
1965          * Only try to release the exchange manager if the vn_port
1966          * configuration is complete.
1967          */
1968         if (vn_port->state == LPORT_ST_READY)
1969                 fc_exch_mgr_free(vn_port);
1970
1971         /* Free memory used by statistical counters */
1972         fc_lport_free_stats(vn_port);
1973
1974         /* Release Scsi_Host */
1975         scsi_host_put(vn_port->host);
1976
1977 out:
1978         return 0;
1979 }
1980
1981 static int qedf_vport_disable(struct fc_vport *vport, bool disable)
1982 {
1983         struct fc_lport *lport = vport->dd_data;
1984
1985         if (disable) {
1986                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1987                 fc_fabric_logoff(lport);
1988         } else {
1989                 lport->boot_time = jiffies;
1990                 fc_fabric_login(lport);
1991                 fc_vport_setlink(lport);
1992         }
1993         return 0;
1994 }
1995
1996 /*
1997  * During removal we need to wait for all the vports associated with a port
1998  * to be destroyed so we avoid a race condition where libfc is still trying
1999  * to reap vports while the driver remove function has already reaped the
2000  * driver contexts associated with the physical port.
2001  */
2002 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf)
2003 {
2004         struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host);
2005
2006         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
2007             "Entered.\n");
2008         while (fc_host->npiv_vports_inuse > 0) {
2009                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
2010                     "Waiting for all vports to be reaped.\n");
2011                 msleep(1000);
2012         }
2013 }
2014
2015 /**
2016  * qedf_fcoe_reset - Resets the fcoe
2017  *
2018  * @shost: shost the reset is from
2019  *
2020  * Returns: always 0
2021  */
2022 static int qedf_fcoe_reset(struct Scsi_Host *shost)
2023 {
2024         struct fc_lport *lport = shost_priv(shost);
2025
2026         qedf_ctx_soft_reset(lport);
2027         return 0;
2028 }
2029
2030 static void qedf_get_host_port_id(struct Scsi_Host *shost)
2031 {
2032         struct fc_lport *lport = shost_priv(shost);
2033
2034         fc_host_port_id(shost) = lport->port_id;
2035 }
2036
2037 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host
2038         *shost)
2039 {
2040         struct fc_host_statistics *qedf_stats;
2041         struct fc_lport *lport = shost_priv(shost);
2042         struct qedf_ctx *qedf = lport_priv(lport);
2043         struct qed_fcoe_stats *fw_fcoe_stats;
2044
2045         qedf_stats = fc_get_host_stats(shost);
2046
2047         /* We don't collect offload stats for specific NPIV ports */
2048         if (lport->vport)
2049                 goto out;
2050
2051         fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL);
2052         if (!fw_fcoe_stats) {
2053                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for "
2054                     "fw_fcoe_stats.\n");
2055                 goto out;
2056         }
2057
2058         mutex_lock(&qedf->stats_mutex);
2059
2060         /* Query firmware for offload stats */
2061         qed_ops->get_stats(qedf->cdev, fw_fcoe_stats);
2062
2063         /*
2064          * The expectation is that we add our offload stats to the stats
2065          * being maintained by libfc each time the fc_get_host_status callback
2066          * is invoked. The additions are not carried over for each call to
2067          * the fc_get_host_stats callback.
2068          */
2069         qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt +
2070             fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt +
2071             fw_fcoe_stats->fcoe_tx_other_pkt_cnt;
2072         qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt +
2073             fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt +
2074             fw_fcoe_stats->fcoe_rx_other_pkt_cnt;
2075         qedf_stats->fcp_input_megabytes +=
2076             do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000);
2077         qedf_stats->fcp_output_megabytes +=
2078             do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000);
2079         qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4;
2080         qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4;
2081         qedf_stats->invalid_crc_count +=
2082             fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt;
2083         qedf_stats->dumped_frames =
2084             fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
2085         qedf_stats->error_frames +=
2086             fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
2087         qedf_stats->fcp_input_requests += qedf->input_requests;
2088         qedf_stats->fcp_output_requests += qedf->output_requests;
2089         qedf_stats->fcp_control_requests += qedf->control_requests;
2090         qedf_stats->fcp_packet_aborts += qedf->packet_aborts;
2091         qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures;
2092
2093         mutex_unlock(&qedf->stats_mutex);
2094         kfree(fw_fcoe_stats);
2095 out:
2096         return qedf_stats;
2097 }
2098
2099 static struct fc_function_template qedf_fc_transport_fn = {
2100         .show_host_node_name = 1,
2101         .show_host_port_name = 1,
2102         .show_host_supported_classes = 1,
2103         .show_host_supported_fc4s = 1,
2104         .show_host_active_fc4s = 1,
2105         .show_host_maxframe_size = 1,
2106
2107         .get_host_port_id = qedf_get_host_port_id,
2108         .show_host_port_id = 1,
2109         .show_host_supported_speeds = 1,
2110         .get_host_speed = fc_get_host_speed,
2111         .show_host_speed = 1,
2112         .show_host_port_type = 1,
2113         .get_host_port_state = fc_get_host_port_state,
2114         .show_host_port_state = 1,
2115         .show_host_symbolic_name = 1,
2116
2117         /*
2118          * Tell FC transport to allocate enough space to store the backpointer
2119          * for the associate qedf_rport struct.
2120          */
2121         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2122                                 sizeof(struct qedf_rport)),
2123         .show_rport_maxframe_size = 1,
2124         .show_rport_supported_classes = 1,
2125         .show_host_fabric_name = 1,
2126         .show_starget_node_name = 1,
2127         .show_starget_port_name = 1,
2128         .show_starget_port_id = 1,
2129         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2130         .show_rport_dev_loss_tmo = 1,
2131         .get_fc_host_stats = qedf_fc_get_host_stats,
2132         .issue_fc_host_lip = qedf_fcoe_reset,
2133         .vport_create = qedf_vport_create,
2134         .vport_delete = qedf_vport_destroy,
2135         .vport_disable = qedf_vport_disable,
2136         .bsg_request = fc_lport_bsg_request,
2137 };
2138
2139 static struct fc_function_template qedf_fc_vport_transport_fn = {
2140         .show_host_node_name = 1,
2141         .show_host_port_name = 1,
2142         .show_host_supported_classes = 1,
2143         .show_host_supported_fc4s = 1,
2144         .show_host_active_fc4s = 1,
2145         .show_host_maxframe_size = 1,
2146         .show_host_port_id = 1,
2147         .show_host_supported_speeds = 1,
2148         .get_host_speed = fc_get_host_speed,
2149         .show_host_speed = 1,
2150         .show_host_port_type = 1,
2151         .get_host_port_state = fc_get_host_port_state,
2152         .show_host_port_state = 1,
2153         .show_host_symbolic_name = 1,
2154         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2155                                 sizeof(struct qedf_rport)),
2156         .show_rport_maxframe_size = 1,
2157         .show_rport_supported_classes = 1,
2158         .show_host_fabric_name = 1,
2159         .show_starget_node_name = 1,
2160         .show_starget_port_name = 1,
2161         .show_starget_port_id = 1,
2162         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2163         .show_rport_dev_loss_tmo = 1,
2164         .get_fc_host_stats = fc_get_host_stats,
2165         .issue_fc_host_lip = qedf_fcoe_reset,
2166         .bsg_request = fc_lport_bsg_request,
2167 };
2168
2169 static bool qedf_fp_has_work(struct qedf_fastpath *fp)
2170 {
2171         struct qedf_ctx *qedf = fp->qedf;
2172         struct global_queue *que;
2173         struct qed_sb_info *sb_info = fp->sb_info;
2174         struct status_block *sb = sb_info->sb_virt;
2175         u16 prod_idx;
2176
2177         /* Get the pointer to the global CQ this completion is on */
2178         que = qedf->global_queues[fp->sb_id];
2179
2180         /* Be sure all responses have been written to PI */
2181         rmb();
2182
2183         /* Get the current firmware producer index */
2184         prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
2185
2186         return (que->cq_prod_idx != prod_idx);
2187 }
2188
2189 /*
2190  * Interrupt handler code.
2191  */
2192
2193 /* Process completion queue and copy CQE contents for deferred processesing
2194  *
2195  * Return true if we should wake the I/O thread, false if not.
2196  */
2197 static bool qedf_process_completions(struct qedf_fastpath *fp)
2198 {
2199         struct qedf_ctx *qedf = fp->qedf;
2200         struct qed_sb_info *sb_info = fp->sb_info;
2201         struct status_block *sb = sb_info->sb_virt;
2202         struct global_queue *que;
2203         u16 prod_idx;
2204         struct fcoe_cqe *cqe;
2205         struct qedf_io_work *io_work;
2206         int num_handled = 0;
2207         unsigned int cpu;
2208         struct qedf_ioreq *io_req = NULL;
2209         u16 xid;
2210         u16 new_cqes;
2211         u32 comp_type;
2212
2213         /* Get the current firmware producer index */
2214         prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
2215
2216         /* Get the pointer to the global CQ this completion is on */
2217         que = qedf->global_queues[fp->sb_id];
2218
2219         /* Calculate the amount of new elements since last processing */
2220         new_cqes = (prod_idx >= que->cq_prod_idx) ?
2221             (prod_idx - que->cq_prod_idx) :
2222             0x10000 - que->cq_prod_idx + prod_idx;
2223
2224         /* Save producer index */
2225         que->cq_prod_idx = prod_idx;
2226
2227         while (new_cqes) {
2228                 fp->completions++;
2229                 num_handled++;
2230                 cqe = &que->cq[que->cq_cons_idx];
2231
2232                 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2233                     FCOE_CQE_CQE_TYPE_MASK;
2234
2235                 /*
2236                  * Process unsolicited CQEs directly in the interrupt handler
2237                  * sine we need the fastpath ID
2238                  */
2239                 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) {
2240                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL,
2241                            "Unsolicated CQE.\n");
2242                         qedf_process_unsol_compl(qedf, fp->sb_id, cqe);
2243                         /*
2244                          * Don't add a work list item.  Increment consumer
2245                          * consumer index and move on.
2246                          */
2247                         goto inc_idx;
2248                 }
2249
2250                 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2251                 io_req = &qedf->cmd_mgr->cmds[xid];
2252
2253                 /*
2254                  * Figure out which percpu thread we should queue this I/O
2255                  * on.
2256                  */
2257                 if (!io_req)
2258                         /* If there is not io_req assocated with this CQE
2259                          * just queue it on CPU 0
2260                          */
2261                         cpu = 0;
2262                 else {
2263                         cpu = io_req->cpu;
2264                         io_req->int_cpu = smp_processor_id();
2265                 }
2266
2267                 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC);
2268                 if (!io_work) {
2269                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate "
2270                                    "work for I/O completion.\n");
2271                         continue;
2272                 }
2273                 memset(io_work, 0, sizeof(struct qedf_io_work));
2274
2275                 INIT_WORK(&io_work->work, qedf_fp_io_handler);
2276
2277                 /* Copy contents of CQE for deferred processing */
2278                 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe));
2279
2280                 io_work->qedf = fp->qedf;
2281                 io_work->fp = NULL; /* Only used for unsolicited frames */
2282
2283                 queue_work_on(cpu, qedf_io_wq, &io_work->work);
2284
2285 inc_idx:
2286                 que->cq_cons_idx++;
2287                 if (que->cq_cons_idx == fp->cq_num_entries)
2288                         que->cq_cons_idx = 0;
2289                 new_cqes--;
2290         }
2291
2292         return true;
2293 }
2294
2295
2296 /* MSI-X fastpath handler code */
2297 static irqreturn_t qedf_msix_handler(int irq, void *dev_id)
2298 {
2299         struct qedf_fastpath *fp = dev_id;
2300
2301         if (!fp) {
2302                 QEDF_ERR(NULL, "fp is null.\n");
2303                 return IRQ_HANDLED;
2304         }
2305         if (!fp->sb_info) {
2306                 QEDF_ERR(NULL, "fp->sb_info in null.");
2307                 return IRQ_HANDLED;
2308         }
2309
2310         /*
2311          * Disable interrupts for this status block while we process new
2312          * completions
2313          */
2314         qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/);
2315
2316         while (1) {
2317                 qedf_process_completions(fp);
2318
2319                 if (qedf_fp_has_work(fp) == 0) {
2320                         /* Update the sb information */
2321                         qed_sb_update_sb_idx(fp->sb_info);
2322
2323                         /* Check for more work */
2324                         rmb();
2325
2326                         if (qedf_fp_has_work(fp) == 0) {
2327                                 /* Re-enable interrupts */
2328                                 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
2329                                 return IRQ_HANDLED;
2330                         }
2331                 }
2332         }
2333
2334         /* Do we ever want to break out of above loop? */
2335         return IRQ_HANDLED;
2336 }
2337
2338 /* simd handler for MSI/INTa */
2339 static void qedf_simd_int_handler(void *cookie)
2340 {
2341         /* Cookie is qedf_ctx struct */
2342         struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2343
2344         QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf);
2345 }
2346
2347 #define QEDF_SIMD_HANDLER_NUM           0
2348 static void qedf_sync_free_irqs(struct qedf_ctx *qedf)
2349 {
2350         int i;
2351         u16 vector_idx = 0;
2352         u32 vector;
2353
2354         if (qedf->int_info.msix_cnt) {
2355                 for (i = 0; i < qedf->int_info.used_cnt; i++) {
2356                         vector_idx = i * qedf->dev_info.common.num_hwfns +
2357                                 qed_ops->common->get_affin_hwfn_idx(qedf->cdev);
2358                         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
2359                                   "Freeing IRQ #%d vector_idx=%d.\n",
2360                                   i, vector_idx);
2361                         vector = qedf->int_info.msix[vector_idx].vector;
2362                         synchronize_irq(vector);
2363                         irq_set_affinity_hint(vector, NULL);
2364                         irq_set_affinity_notifier(vector, NULL);
2365                         free_irq(vector, &qedf->fp_array[i]);
2366                 }
2367         } else
2368                 qed_ops->common->simd_handler_clean(qedf->cdev,
2369                     QEDF_SIMD_HANDLER_NUM);
2370
2371         qedf->int_info.used_cnt = 0;
2372         qed_ops->common->set_fp_int(qedf->cdev, 0);
2373 }
2374
2375 static int qedf_request_msix_irq(struct qedf_ctx *qedf)
2376 {
2377         int i, rc, cpu;
2378         u16 vector_idx = 0;
2379         u32 vector;
2380
2381         cpu = cpumask_first(cpu_online_mask);
2382         for (i = 0; i < qedf->num_queues; i++) {
2383                 vector_idx = i * qedf->dev_info.common.num_hwfns +
2384                         qed_ops->common->get_affin_hwfn_idx(qedf->cdev);
2385                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
2386                           "Requesting IRQ #%d vector_idx=%d.\n",
2387                           i, vector_idx);
2388                 vector = qedf->int_info.msix[vector_idx].vector;
2389                 rc = request_irq(vector, qedf_msix_handler, 0, "qedf",
2390                                  &qedf->fp_array[i]);
2391
2392                 if (rc) {
2393                         QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n");
2394                         qedf_sync_free_irqs(qedf);
2395                         return rc;
2396                 }
2397
2398                 qedf->int_info.used_cnt++;
2399                 rc = irq_set_affinity_hint(vector, get_cpu_mask(cpu));
2400                 cpu = cpumask_next(cpu, cpu_online_mask);
2401         }
2402
2403         return 0;
2404 }
2405
2406 static int qedf_setup_int(struct qedf_ctx *qedf)
2407 {
2408         int rc = 0;
2409
2410         /*
2411          * Learn interrupt configuration
2412          */
2413         rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus());
2414         if (rc <= 0)
2415                 return 0;
2416
2417         rc  = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info);
2418         if (rc)
2419                 return 0;
2420
2421         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = "
2422                    "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt,
2423                    num_online_cpus());
2424
2425         if (qedf->int_info.msix_cnt)
2426                 return qedf_request_msix_irq(qedf);
2427
2428         qed_ops->common->simd_handler_config(qedf->cdev, &qedf,
2429             QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler);
2430         qedf->int_info.used_cnt = 1;
2431
2432         QEDF_ERR(&qedf->dbg_ctx,
2433                  "Cannot load driver due to a lack of MSI-X vectors.\n");
2434         return -EINVAL;
2435 }
2436
2437 /* Main function for libfc frame reception */
2438 static void qedf_recv_frame(struct qedf_ctx *qedf,
2439         struct sk_buff *skb)
2440 {
2441         u32 fr_len;
2442         struct fc_lport *lport;
2443         struct fc_frame_header *fh;
2444         struct fcoe_crc_eof crc_eof;
2445         struct fc_frame *fp;
2446         u8 *mac = NULL;
2447         u8 *dest_mac = NULL;
2448         struct fcoe_hdr *hp;
2449         struct qedf_rport *fcport;
2450         struct fc_lport *vn_port;
2451         u32 f_ctl;
2452
2453         lport = qedf->lport;
2454         if (lport == NULL || lport->state == LPORT_ST_DISABLED) {
2455                 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n");
2456                 kfree_skb(skb);
2457                 return;
2458         }
2459
2460         if (skb_is_nonlinear(skb))
2461                 skb_linearize(skb);
2462         mac = eth_hdr(skb)->h_source;
2463         dest_mac = eth_hdr(skb)->h_dest;
2464
2465         /* Pull the header */
2466         hp = (struct fcoe_hdr *)skb->data;
2467         fh = (struct fc_frame_header *) skb_transport_header(skb);
2468         skb_pull(skb, sizeof(struct fcoe_hdr));
2469         fr_len = skb->len - sizeof(struct fcoe_crc_eof);
2470
2471         fp = (struct fc_frame *)skb;
2472         fc_frame_init(fp);
2473         fr_dev(fp) = lport;
2474         fr_sof(fp) = hp->fcoe_sof;
2475         if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
2476                 QEDF_INFO(NULL, QEDF_LOG_LL2, "skb_copy_bits failed.\n");
2477                 kfree_skb(skb);
2478                 return;
2479         }
2480         fr_eof(fp) = crc_eof.fcoe_eof;
2481         fr_crc(fp) = crc_eof.fcoe_crc32;
2482         if (pskb_trim(skb, fr_len)) {
2483                 QEDF_INFO(NULL, QEDF_LOG_LL2, "pskb_trim failed.\n");
2484                 kfree_skb(skb);
2485                 return;
2486         }
2487
2488         fh = fc_frame_header_get(fp);
2489
2490         /*
2491          * Invalid frame filters.
2492          */
2493
2494         if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
2495             fh->fh_type == FC_TYPE_FCP) {
2496                 /* Drop FCP data. We dont this in L2 path */
2497                 kfree_skb(skb);
2498                 return;
2499         }
2500         if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
2501             fh->fh_type == FC_TYPE_ELS) {
2502                 switch (fc_frame_payload_op(fp)) {
2503                 case ELS_LOGO:
2504                         if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
2505                                 /* drop non-FIP LOGO */
2506                                 kfree_skb(skb);
2507                                 return;
2508                         }
2509                         break;
2510                 }
2511         }
2512
2513         if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
2514                 /* Drop incoming ABTS */
2515                 kfree_skb(skb);
2516                 return;
2517         }
2518
2519         if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
2520                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2521                     "FC frame d_id mismatch with MAC %pM.\n", dest_mac);
2522                 kfree_skb(skb);
2523                 return;
2524         }
2525
2526         if (qedf->ctlr.state) {
2527                 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) {
2528                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2529                             "Wrong source address: mac:%pM dest_addr:%pM.\n",
2530                             mac, qedf->ctlr.dest_addr);
2531                         kfree_skb(skb);
2532                         return;
2533                 }
2534         }
2535
2536         vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
2537
2538         /*
2539          * If the destination ID from the frame header does not match what we
2540          * have on record for lport and the search for a NPIV port came up
2541          * empty then this is not addressed to our port so simply drop it.
2542          */
2543         if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
2544                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2545                           "Dropping frame due to destination mismatch: lport->port_id=0x%x fh->d_id=0x%x.\n",
2546                           lport->port_id, ntoh24(fh->fh_d_id));
2547                 kfree_skb(skb);
2548                 return;
2549         }
2550
2551         f_ctl = ntoh24(fh->fh_f_ctl);
2552         if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) &&
2553             (f_ctl & FC_FC_EX_CTX)) {
2554                 /* Drop incoming ABTS response that has both SEQ/EX CTX set */
2555                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2556                           "Dropping ABTS response as both SEQ/EX CTX set.\n");
2557                 kfree_skb(skb);
2558                 return;
2559         }
2560
2561         /*
2562          * If a connection is uploading, drop incoming FCoE frames as there
2563          * is a small window where we could try to return a frame while libfc
2564          * is trying to clean things up.
2565          */
2566
2567         /* Get fcport associated with d_id if it exists */
2568         fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
2569
2570         if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
2571             &fcport->flags)) {
2572                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2573                     "Connection uploading, dropping fp=%p.\n", fp);
2574                 kfree_skb(skb);
2575                 return;
2576         }
2577
2578         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: "
2579             "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp,
2580             ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl,
2581             fh->fh_type);
2582         if (qedf_dump_frames)
2583                 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
2584                     1, skb->data, skb->len, false);
2585         fc_exch_recv(lport, fp);
2586 }
2587
2588 static void qedf_ll2_process_skb(struct work_struct *work)
2589 {
2590         struct qedf_skb_work *skb_work =
2591             container_of(work, struct qedf_skb_work, work);
2592         struct qedf_ctx *qedf = skb_work->qedf;
2593         struct sk_buff *skb = skb_work->skb;
2594         struct ethhdr *eh;
2595
2596         if (!qedf) {
2597                 QEDF_ERR(NULL, "qedf is NULL\n");
2598                 goto err_out;
2599         }
2600
2601         eh = (struct ethhdr *)skb->data;
2602
2603         /* Undo VLAN encapsulation */
2604         if (eh->h_proto == htons(ETH_P_8021Q)) {
2605                 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
2606                 eh = skb_pull(skb, VLAN_HLEN);
2607                 skb_reset_mac_header(skb);
2608         }
2609
2610         /*
2611          * Process either a FIP frame or FCoE frame based on the
2612          * protocol value.  If it's not either just drop the
2613          * frame.
2614          */
2615         if (eh->h_proto == htons(ETH_P_FIP)) {
2616                 qedf_fip_recv(qedf, skb);
2617                 goto out;
2618         } else if (eh->h_proto == htons(ETH_P_FCOE)) {
2619                 __skb_pull(skb, ETH_HLEN);
2620                 qedf_recv_frame(qedf, skb);
2621                 goto out;
2622         } else
2623                 goto err_out;
2624
2625 err_out:
2626         kfree_skb(skb);
2627 out:
2628         kfree(skb_work);
2629         return;
2630 }
2631
2632 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb,
2633         u32 arg1, u32 arg2)
2634 {
2635         struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2636         struct qedf_skb_work *skb_work;
2637
2638         if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
2639                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2640                           "Dropping frame as link state is down.\n");
2641                 kfree_skb(skb);
2642                 return 0;
2643         }
2644
2645         skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC);
2646         if (!skb_work) {
2647                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so "
2648                            "dropping frame.\n");
2649                 kfree_skb(skb);
2650                 return 0;
2651         }
2652
2653         INIT_WORK(&skb_work->work, qedf_ll2_process_skb);
2654         skb_work->skb = skb;
2655         skb_work->qedf = qedf;
2656         queue_work(qedf->ll2_recv_wq, &skb_work->work);
2657
2658         return 0;
2659 }
2660
2661 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = {
2662         .rx_cb = qedf_ll2_rx,
2663         .tx_cb = NULL,
2664 };
2665
2666 /* Main thread to process I/O completions */
2667 void qedf_fp_io_handler(struct work_struct *work)
2668 {
2669         struct qedf_io_work *io_work =
2670             container_of(work, struct qedf_io_work, work);
2671         u32 comp_type;
2672
2673         /*
2674          * Deferred part of unsolicited CQE sends
2675          * frame to libfc.
2676          */
2677         comp_type = (io_work->cqe.cqe_data >>
2678             FCOE_CQE_CQE_TYPE_SHIFT) &
2679             FCOE_CQE_CQE_TYPE_MASK;
2680         if (comp_type == FCOE_UNSOLIC_CQE_TYPE &&
2681             io_work->fp)
2682                 fc_exch_recv(io_work->qedf->lport, io_work->fp);
2683         else
2684                 qedf_process_cqe(io_work->qedf, &io_work->cqe);
2685
2686         kfree(io_work);
2687 }
2688
2689 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf,
2690         struct qed_sb_info *sb_info, u16 sb_id)
2691 {
2692         struct status_block *sb_virt;
2693         dma_addr_t sb_phys;
2694         int ret;
2695
2696         sb_virt = dma_alloc_coherent(&qedf->pdev->dev,
2697             sizeof(struct status_block), &sb_phys, GFP_KERNEL);
2698
2699         if (!sb_virt) {
2700                 QEDF_ERR(&qedf->dbg_ctx,
2701                          "Status block allocation failed for id = %d.\n",
2702                          sb_id);
2703                 return -ENOMEM;
2704         }
2705
2706         ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys,
2707             sb_id, QED_SB_TYPE_STORAGE);
2708
2709         if (ret) {
2710                 QEDF_ERR(&qedf->dbg_ctx,
2711                          "Status block initialization failed (0x%x) for id = %d.\n",
2712                          ret, sb_id);
2713                 return ret;
2714         }
2715
2716         return 0;
2717 }
2718
2719 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info)
2720 {
2721         if (sb_info->sb_virt)
2722                 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt),
2723                     (void *)sb_info->sb_virt, sb_info->sb_phys);
2724 }
2725
2726 static void qedf_destroy_sb(struct qedf_ctx *qedf)
2727 {
2728         int id;
2729         struct qedf_fastpath *fp = NULL;
2730
2731         for (id = 0; id < qedf->num_queues; id++) {
2732                 fp = &(qedf->fp_array[id]);
2733                 if (fp->sb_id == QEDF_SB_ID_NULL)
2734                         break;
2735                 qedf_free_sb(qedf, fp->sb_info);
2736                 kfree(fp->sb_info);
2737         }
2738         kfree(qedf->fp_array);
2739 }
2740
2741 static int qedf_prepare_sb(struct qedf_ctx *qedf)
2742 {
2743         int id;
2744         struct qedf_fastpath *fp;
2745         int ret;
2746
2747         qedf->fp_array =
2748             kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath),
2749                 GFP_KERNEL);
2750
2751         if (!qedf->fp_array) {
2752                 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation "
2753                           "failed.\n");
2754                 return -ENOMEM;
2755         }
2756
2757         for (id = 0; id < qedf->num_queues; id++) {
2758                 fp = &(qedf->fp_array[id]);
2759                 fp->sb_id = QEDF_SB_ID_NULL;
2760                 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL);
2761                 if (!fp->sb_info) {
2762                         QEDF_ERR(&(qedf->dbg_ctx), "SB info struct "
2763                                   "allocation failed.\n");
2764                         goto err;
2765                 }
2766                 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id);
2767                 if (ret) {
2768                         QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and "
2769                                   "initialization failed.\n");
2770                         goto err;
2771                 }
2772                 fp->sb_id = id;
2773                 fp->qedf = qedf;
2774                 fp->cq_num_entries =
2775                     qedf->global_queues[id]->cq_mem_size /
2776                     sizeof(struct fcoe_cqe);
2777         }
2778 err:
2779         return 0;
2780 }
2781
2782 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe)
2783 {
2784         u16 xid;
2785         struct qedf_ioreq *io_req;
2786         struct qedf_rport *fcport;
2787         u32 comp_type;
2788
2789         comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2790             FCOE_CQE_CQE_TYPE_MASK;
2791
2792         xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2793         io_req = &qedf->cmd_mgr->cmds[xid];
2794
2795         /* Completion not for a valid I/O anymore so just return */
2796         if (!io_req) {
2797                 QEDF_ERR(&qedf->dbg_ctx,
2798                          "io_req is NULL for xid=0x%x.\n", xid);
2799                 return;
2800         }
2801
2802         fcport = io_req->fcport;
2803
2804         if (fcport == NULL) {
2805                 QEDF_ERR(&qedf->dbg_ctx,
2806                          "fcport is NULL for xid=0x%x io_req=%p.\n",
2807                          xid, io_req);
2808                 return;
2809         }
2810
2811         /*
2812          * Check that fcport is offloaded.  If it isn't then the spinlock
2813          * isn't valid and shouldn't be taken. We should just return.
2814          */
2815         if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
2816                 QEDF_ERR(&qedf->dbg_ctx,
2817                          "Session not offloaded yet, fcport = %p.\n", fcport);
2818                 return;
2819         }
2820
2821
2822         switch (comp_type) {
2823         case FCOE_GOOD_COMPLETION_CQE_TYPE:
2824                 atomic_inc(&fcport->free_sqes);
2825                 switch (io_req->cmd_type) {
2826                 case QEDF_SCSI_CMD:
2827                         qedf_scsi_completion(qedf, cqe, io_req);
2828                         break;
2829                 case QEDF_ELS:
2830                         qedf_process_els_compl(qedf, cqe, io_req);
2831                         break;
2832                 case QEDF_TASK_MGMT_CMD:
2833                         qedf_process_tmf_compl(qedf, cqe, io_req);
2834                         break;
2835                 case QEDF_SEQ_CLEANUP:
2836                         qedf_process_seq_cleanup_compl(qedf, cqe, io_req);
2837                         break;
2838                 }
2839                 break;
2840         case FCOE_ERROR_DETECTION_CQE_TYPE:
2841                 atomic_inc(&fcport->free_sqes);
2842                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2843                     "Error detect CQE.\n");
2844                 qedf_process_error_detect(qedf, cqe, io_req);
2845                 break;
2846         case FCOE_EXCH_CLEANUP_CQE_TYPE:
2847                 atomic_inc(&fcport->free_sqes);
2848                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2849                     "Cleanup CQE.\n");
2850                 qedf_process_cleanup_compl(qedf, cqe, io_req);
2851                 break;
2852         case FCOE_ABTS_CQE_TYPE:
2853                 atomic_inc(&fcport->free_sqes);
2854                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2855                     "Abort CQE.\n");
2856                 qedf_process_abts_compl(qedf, cqe, io_req);
2857                 break;
2858         case FCOE_DUMMY_CQE_TYPE:
2859                 atomic_inc(&fcport->free_sqes);
2860                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2861                     "Dummy CQE.\n");
2862                 break;
2863         case FCOE_LOCAL_COMP_CQE_TYPE:
2864                 atomic_inc(&fcport->free_sqes);
2865                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2866                     "Local completion CQE.\n");
2867                 break;
2868         case FCOE_WARNING_CQE_TYPE:
2869                 atomic_inc(&fcport->free_sqes);
2870                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2871                     "Warning CQE.\n");
2872                 qedf_process_warning_compl(qedf, cqe, io_req);
2873                 break;
2874         case MAX_FCOE_CQE_TYPE:
2875                 atomic_inc(&fcport->free_sqes);
2876                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2877                     "Max FCoE CQE.\n");
2878                 break;
2879         default:
2880                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2881                     "Default CQE.\n");
2882                 break;
2883         }
2884 }
2885
2886 static void qedf_free_bdq(struct qedf_ctx *qedf)
2887 {
2888         int i;
2889
2890         if (qedf->bdq_pbl_list)
2891                 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE,
2892                     qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma);
2893
2894         if (qedf->bdq_pbl)
2895                 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size,
2896                     qedf->bdq_pbl, qedf->bdq_pbl_dma);
2897
2898         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2899                 if (qedf->bdq[i].buf_addr) {
2900                         dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE,
2901                             qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma);
2902                 }
2903         }
2904 }
2905
2906 static void qedf_free_global_queues(struct qedf_ctx *qedf)
2907 {
2908         int i;
2909         struct global_queue **gl = qedf->global_queues;
2910
2911         for (i = 0; i < qedf->num_queues; i++) {
2912                 if (!gl[i])
2913                         continue;
2914
2915                 if (gl[i]->cq)
2916                         dma_free_coherent(&qedf->pdev->dev,
2917                             gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma);
2918                 if (gl[i]->cq_pbl)
2919                         dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size,
2920                             gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
2921
2922                 kfree(gl[i]);
2923         }
2924
2925         qedf_free_bdq(qedf);
2926 }
2927
2928 static int qedf_alloc_bdq(struct qedf_ctx *qedf)
2929 {
2930         int i;
2931         struct scsi_bd *pbl;
2932         u64 *list;
2933         dma_addr_t page;
2934
2935         /* Alloc dma memory for BDQ buffers */
2936         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2937                 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev,
2938                     QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL);
2939                 if (!qedf->bdq[i].buf_addr) {
2940                         QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ "
2941                             "buffer %d.\n", i);
2942                         return -ENOMEM;
2943                 }
2944         }
2945
2946         /* Alloc dma memory for BDQ page buffer list */
2947         qedf->bdq_pbl_mem_size =
2948             QEDF_BDQ_SIZE * sizeof(struct scsi_bd);
2949         qedf->bdq_pbl_mem_size =
2950             ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE);
2951
2952         qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
2953             qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL);
2954         if (!qedf->bdq_pbl) {
2955                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n");
2956                 return -ENOMEM;
2957         }
2958
2959         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2960                   "BDQ PBL addr=0x%p dma=%pad\n",
2961                   qedf->bdq_pbl, &qedf->bdq_pbl_dma);
2962
2963         /*
2964          * Populate BDQ PBL with physical and virtual address of individual
2965          * BDQ buffers
2966          */
2967         pbl = (struct scsi_bd *)qedf->bdq_pbl;
2968         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2969                 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma));
2970                 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma));
2971                 pbl->opaque.fcoe_opaque.hi = 0;
2972                 /* Opaque lo data is an index into the BDQ array */
2973                 pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i);
2974                 pbl++;
2975         }
2976
2977         /* Allocate list of PBL pages */
2978         qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev,
2979                                                 QEDF_PAGE_SIZE,
2980                                                 &qedf->bdq_pbl_list_dma,
2981                                                 GFP_KERNEL);
2982         if (!qedf->bdq_pbl_list) {
2983                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n");
2984                 return -ENOMEM;
2985         }
2986
2987         /*
2988          * Now populate PBL list with pages that contain pointers to the
2989          * individual buffers.
2990          */
2991         qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size /
2992             QEDF_PAGE_SIZE;
2993         list = (u64 *)qedf->bdq_pbl_list;
2994         page = qedf->bdq_pbl_list_dma;
2995         for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) {
2996                 *list = qedf->bdq_pbl_dma;
2997                 list++;
2998                 page += QEDF_PAGE_SIZE;
2999         }
3000
3001         return 0;
3002 }
3003
3004 static int qedf_alloc_global_queues(struct qedf_ctx *qedf)
3005 {
3006         u32 *list;
3007         int i;
3008         int status;
3009         u32 *pbl;
3010         dma_addr_t page;
3011         int num_pages;
3012
3013         /* Allocate and map CQs, RQs */
3014         /*
3015          * Number of global queues (CQ / RQ). This should
3016          * be <= number of available MSIX vectors for the PF
3017          */
3018         if (!qedf->num_queues) {
3019                 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n");
3020                 return -ENOMEM;
3021         }
3022
3023         /*
3024          * Make sure we allocated the PBL that will contain the physical
3025          * addresses of our queues
3026          */
3027         if (!qedf->p_cpuq) {
3028                 status = -EINVAL;
3029                 QEDF_ERR(&qedf->dbg_ctx, "p_cpuq is NULL.\n");
3030                 goto mem_alloc_failure;
3031         }
3032
3033         qedf->global_queues = kzalloc((sizeof(struct global_queue *)
3034             * qedf->num_queues), GFP_KERNEL);
3035         if (!qedf->global_queues) {
3036                 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global "
3037                           "queues array ptr memory\n");
3038                 return -ENOMEM;
3039         }
3040         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3041                    "qedf->global_queues=%p.\n", qedf->global_queues);
3042
3043         /* Allocate DMA coherent buffers for BDQ */
3044         status = qedf_alloc_bdq(qedf);
3045         if (status) {
3046                 QEDF_ERR(&qedf->dbg_ctx, "Unable to allocate bdq.\n");
3047                 goto mem_alloc_failure;
3048         }
3049
3050         /* Allocate a CQ and an associated PBL for each MSI-X vector */
3051         for (i = 0; i < qedf->num_queues; i++) {
3052                 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue),
3053                     GFP_KERNEL);
3054                 if (!qedf->global_queues[i]) {
3055                         QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate "
3056                                    "global queue %d.\n", i);
3057                         status = -ENOMEM;
3058                         goto mem_alloc_failure;
3059                 }
3060
3061                 qedf->global_queues[i]->cq_mem_size =
3062                     FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
3063                 qedf->global_queues[i]->cq_mem_size =
3064                     ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE);
3065
3066                 qedf->global_queues[i]->cq_pbl_size =
3067                     (qedf->global_queues[i]->cq_mem_size /
3068                     PAGE_SIZE) * sizeof(void *);
3069                 qedf->global_queues[i]->cq_pbl_size =
3070                     ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE);
3071
3072                 qedf->global_queues[i]->cq =
3073                     dma_alloc_coherent(&qedf->pdev->dev,
3074                                        qedf->global_queues[i]->cq_mem_size,
3075                                        &qedf->global_queues[i]->cq_dma,
3076                                        GFP_KERNEL);
3077
3078                 if (!qedf->global_queues[i]->cq) {
3079                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n");
3080                         status = -ENOMEM;
3081                         goto mem_alloc_failure;
3082                 }
3083
3084                 qedf->global_queues[i]->cq_pbl =
3085                     dma_alloc_coherent(&qedf->pdev->dev,
3086                                        qedf->global_queues[i]->cq_pbl_size,
3087                                        &qedf->global_queues[i]->cq_pbl_dma,
3088                                        GFP_KERNEL);
3089
3090                 if (!qedf->global_queues[i]->cq_pbl) {
3091                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n");
3092                         status = -ENOMEM;
3093                         goto mem_alloc_failure;
3094                 }
3095
3096                 /* Create PBL */
3097                 num_pages = qedf->global_queues[i]->cq_mem_size /
3098                     QEDF_PAGE_SIZE;
3099                 page = qedf->global_queues[i]->cq_dma;
3100                 pbl = (u32 *)qedf->global_queues[i]->cq_pbl;
3101
3102                 while (num_pages--) {
3103                         *pbl = U64_LO(page);
3104                         pbl++;
3105                         *pbl = U64_HI(page);
3106                         pbl++;
3107                         page += QEDF_PAGE_SIZE;
3108                 }
3109                 /* Set the initial consumer index for cq */
3110                 qedf->global_queues[i]->cq_cons_idx = 0;
3111         }
3112
3113         list = (u32 *)qedf->p_cpuq;
3114
3115         /*
3116          * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
3117          * CQ#1 PBL pointer, RQ#1 PBL pointer, etc.  Each PBL pointer points
3118          * to the physical address which contains an array of pointers to
3119          * the physical addresses of the specific queue pages.
3120          */
3121         for (i = 0; i < qedf->num_queues; i++) {
3122                 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma);
3123                 list++;
3124                 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma);
3125                 list++;
3126                 *list = U64_LO(0);
3127                 list++;
3128                 *list = U64_HI(0);
3129                 list++;
3130         }
3131
3132         return 0;
3133
3134 mem_alloc_failure:
3135         qedf_free_global_queues(qedf);
3136         return status;
3137 }
3138
3139 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf)
3140 {
3141         u8 sq_num_pbl_pages;
3142         u32 sq_mem_size;
3143         u32 cq_mem_size;
3144         u32 cq_num_entries;
3145         int rval;
3146
3147         /*
3148          * The number of completion queues/fastpath interrupts/status blocks
3149          * we allocation is the minimum off:
3150          *
3151          * Number of CPUs
3152          * Number allocated by qed for our PCI function
3153          */
3154         qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf);
3155
3156         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n",
3157                    qedf->num_queues);
3158
3159         qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev,
3160             qedf->num_queues * sizeof(struct qedf_glbl_q_params),
3161             &qedf->hw_p_cpuq, GFP_KERNEL);
3162
3163         if (!qedf->p_cpuq) {
3164                 QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n");
3165                 return 1;
3166         }
3167
3168         rval = qedf_alloc_global_queues(qedf);
3169         if (rval) {
3170                 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation "
3171                           "failed.\n");
3172                 return 1;
3173         }
3174
3175         /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */
3176         sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
3177         sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE);
3178         sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE);
3179
3180         /* Calculate CQ num entries */
3181         cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
3182         cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE);
3183         cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe);
3184
3185         memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params));
3186
3187         /* Setup the value for fcoe PF */
3188         qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS;
3189         qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS;
3190         qedf->pf_params.fcoe_pf_params.glbl_q_params_addr =
3191             (u64)qedf->hw_p_cpuq;
3192         qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages;
3193
3194         qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0;
3195
3196         qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries;
3197         qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues;
3198
3199         /* log_page_size: 12 for 4KB pages */
3200         qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE);
3201
3202         qedf->pf_params.fcoe_pf_params.mtu = 9000;
3203         qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI;
3204         qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI;
3205
3206         /* BDQ address and size */
3207         qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] =
3208             qedf->bdq_pbl_list_dma;
3209         qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] =
3210             qedf->bdq_pbl_list_num_entries;
3211         qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE;
3212
3213         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3214             "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n",
3215             qedf->bdq_pbl_list,
3216             qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0],
3217             qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]);
3218
3219         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3220             "cq_num_entries=%d.\n",
3221             qedf->pf_params.fcoe_pf_params.cq_num_entries);
3222
3223         return 0;
3224 }
3225
3226 /* Free DMA coherent memory for array of queue pointers we pass to qed */
3227 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf)
3228 {
3229         size_t size = 0;
3230
3231         if (qedf->p_cpuq) {
3232                 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params);
3233                 dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq,
3234                     qedf->hw_p_cpuq);
3235         }
3236
3237         qedf_free_global_queues(qedf);
3238
3239         kfree(qedf->global_queues);
3240 }
3241
3242 /*
3243  * PCI driver functions
3244  */
3245
3246 static const struct pci_device_id qedf_pci_tbl[] = {
3247         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) },
3248         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) },
3249         {0}
3250 };
3251 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl);
3252
3253 static struct pci_driver qedf_pci_driver = {
3254         .name = QEDF_MODULE_NAME,
3255         .id_table = qedf_pci_tbl,
3256         .probe = qedf_probe,
3257         .remove = qedf_remove,
3258         .shutdown = qedf_shutdown,
3259 };
3260
3261 static int __qedf_probe(struct pci_dev *pdev, int mode)
3262 {
3263         int rc = -EINVAL;
3264         struct fc_lport *lport;
3265         struct qedf_ctx *qedf = NULL;
3266         struct Scsi_Host *host;
3267         bool is_vf = false;
3268         struct qed_ll2_params params;
3269         char host_buf[20];
3270         struct qed_link_params link_params;
3271         int status;
3272         void *task_start, *task_end;
3273         struct qed_slowpath_params slowpath_params;
3274         struct qed_probe_params qed_params;
3275         u16 retry_cnt = 10;
3276
3277         /*
3278          * When doing error recovery we didn't reap the lport so don't try
3279          * to reallocate it.
3280          */
3281 retry_probe:
3282         if (mode == QEDF_MODE_RECOVERY)
3283                 msleep(2000);
3284
3285         if (mode != QEDF_MODE_RECOVERY) {
3286                 lport = libfc_host_alloc(&qedf_host_template,
3287                     sizeof(struct qedf_ctx));
3288
3289                 if (!lport) {
3290                         QEDF_ERR(NULL, "Could not allocate lport.\n");
3291                         rc = -ENOMEM;
3292                         goto err0;
3293                 }
3294
3295                 fc_disc_init(lport);
3296
3297                 /* Initialize qedf_ctx */
3298                 qedf = lport_priv(lport);
3299                 set_bit(QEDF_PROBING, &qedf->flags);
3300                 qedf->lport = lport;
3301                 qedf->ctlr.lp = lport;
3302                 qedf->pdev = pdev;
3303                 qedf->dbg_ctx.pdev = pdev;
3304                 qedf->dbg_ctx.host_no = lport->host->host_no;
3305                 spin_lock_init(&qedf->hba_lock);
3306                 INIT_LIST_HEAD(&qedf->fcports);
3307                 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1;
3308                 atomic_set(&qedf->num_offloads, 0);
3309                 qedf->stop_io_on_error = false;
3310                 pci_set_drvdata(pdev, qedf);
3311                 init_completion(&qedf->fipvlan_compl);
3312                 mutex_init(&qedf->stats_mutex);
3313                 mutex_init(&qedf->flush_mutex);
3314                 qedf->flogi_pending = 0;
3315
3316                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO,
3317                    "QLogic FastLinQ FCoE Module qedf %s, "
3318                    "FW %d.%d.%d.%d\n", QEDF_VERSION,
3319                    FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
3320                    FW_ENGINEERING_VERSION);
3321         } else {
3322                 /* Init pointers during recovery */
3323                 qedf = pci_get_drvdata(pdev);
3324                 set_bit(QEDF_PROBING, &qedf->flags);
3325                 lport = qedf->lport;
3326         }
3327
3328         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe started.\n");
3329
3330         host = lport->host;
3331
3332         /* Allocate mempool for qedf_io_work structs */
3333         qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN,
3334             qedf_io_work_cache);
3335         if (qedf->io_mempool == NULL) {
3336                 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n");
3337                 goto err1;
3338         }
3339         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n",
3340             qedf->io_mempool);
3341
3342         sprintf(host_buf, "qedf_%u_link",
3343             qedf->lport->host->host_no);
3344         qedf->link_update_wq = create_workqueue(host_buf);
3345         INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update);
3346         INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery);
3347         INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump);
3348         INIT_DELAYED_WORK(&qedf->stag_work, qedf_stag_change_work);
3349         qedf->fipvlan_retries = qedf_fipvlan_retries;
3350         /* Set a default prio in case DCBX doesn't converge */
3351         if (qedf_default_prio > -1) {
3352                 /*
3353                  * This is the case where we pass a modparam in so we want to
3354                  * honor it even if dcbx doesn't converge.
3355                  */
3356                 qedf->prio = qedf_default_prio;
3357         } else
3358                 qedf->prio = QEDF_DEFAULT_PRIO;
3359
3360         /*
3361          * Common probe. Takes care of basic hardware init and pci_*
3362          * functions.
3363          */
3364         memset(&qed_params, 0, sizeof(qed_params));
3365         qed_params.protocol = QED_PROTOCOL_FCOE;
3366         qed_params.dp_module = qedf_dp_module;
3367         qed_params.dp_level = qedf_dp_level;
3368         qed_params.is_vf = is_vf;
3369         qedf->cdev = qed_ops->common->probe(pdev, &qed_params);
3370         if (!qedf->cdev) {
3371                 if ((mode == QEDF_MODE_RECOVERY) && retry_cnt) {
3372                         QEDF_ERR(&qedf->dbg_ctx,
3373                                 "Retry %d initialize hardware\n", retry_cnt);
3374                         retry_cnt--;
3375                         goto retry_probe;
3376                 }
3377                 QEDF_ERR(&qedf->dbg_ctx, "common probe failed.\n");
3378                 rc = -ENODEV;
3379                 goto err1;
3380         }
3381
3382         /* Learn information crucial for qedf to progress */
3383         rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
3384         if (rc) {
3385                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n");
3386                 goto err1;
3387         }
3388
3389         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
3390                   "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
3391                   qedf->dev_info.common.num_hwfns,
3392                   qed_ops->common->get_affin_hwfn_idx(qedf->cdev));
3393
3394         /* queue allocation code should come here
3395          * order should be
3396          *      slowpath_start
3397          *      status block allocation
3398          *      interrupt registration (to get min number of queues)
3399          *      set_fcoe_pf_param
3400          *      qed_sp_fcoe_func_start
3401          */
3402         rc = qedf_set_fcoe_pf_param(qedf);
3403         if (rc) {
3404                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n");
3405                 goto err2;
3406         }
3407         qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3408
3409         /* Learn information crucial for qedf to progress */
3410         rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
3411         if (rc) {
3412                 QEDF_ERR(&qedf->dbg_ctx, "Failed to fill dev info.\n");
3413                 goto err2;
3414         }
3415
3416         if (mode != QEDF_MODE_RECOVERY) {
3417                 qedf->devlink = qed_ops->common->devlink_register(qedf->cdev);
3418                 if (IS_ERR(qedf->devlink)) {
3419                         QEDF_ERR(&qedf->dbg_ctx, "Cannot register devlink\n");
3420                         rc = PTR_ERR(qedf->devlink);
3421                         qedf->devlink = NULL;
3422                         goto err2;
3423                 }
3424         }
3425
3426         /* Record BDQ producer doorbell addresses */
3427         qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr;
3428         qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr;
3429         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3430             "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod,
3431             qedf->bdq_secondary_prod);
3432
3433         qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf);
3434
3435         rc = qedf_prepare_sb(qedf);
3436         if (rc) {
3437
3438                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3439                 goto err2;
3440         }
3441
3442         /* Start the Slowpath-process */
3443         slowpath_params.int_mode = QED_INT_MODE_MSIX;
3444         slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER;
3445         slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER;
3446         slowpath_params.drv_rev = QEDF_DRIVER_REV_VER;
3447         slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER;
3448         strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE);
3449         rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params);
3450         if (rc) {
3451                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3452                 goto err2;
3453         }
3454
3455         /*
3456          * update_pf_params needs to be called before and after slowpath
3457          * start
3458          */
3459         qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3460
3461         /* Setup interrupts */
3462         rc = qedf_setup_int(qedf);
3463         if (rc) {
3464                 QEDF_ERR(&qedf->dbg_ctx, "Setup interrupts failed.\n");
3465                 goto err3;
3466         }
3467
3468         rc = qed_ops->start(qedf->cdev, &qedf->tasks);
3469         if (rc) {
3470                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n");
3471                 goto err4;
3472         }
3473         task_start = qedf_get_task_mem(&qedf->tasks, 0);
3474         task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1);
3475         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, "
3476                    "end=%p block_size=%u.\n", task_start, task_end,
3477                    qedf->tasks.size);
3478
3479         /*
3480          * We need to write the number of BDs in the BDQ we've preallocated so
3481          * the f/w will do a prefetch and we'll get an unsolicited CQE when a
3482          * packet arrives.
3483          */
3484         qedf->bdq_prod_idx = QEDF_BDQ_SIZE;
3485         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3486             "Writing %d to primary and secondary BDQ doorbell registers.\n",
3487             qedf->bdq_prod_idx);
3488         writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod);
3489         readw(qedf->bdq_primary_prod);
3490         writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod);
3491         readw(qedf->bdq_secondary_prod);
3492
3493         qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3494
3495         /* Now that the dev_info struct has been filled in set the MAC
3496          * address
3497          */
3498         ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac);
3499         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n",
3500                    qedf->mac);
3501
3502         /*
3503          * Set the WWNN and WWPN in the following way:
3504          *
3505          * If the info we get from qed is non-zero then use that to set the
3506          * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based
3507          * on the MAC address.
3508          */
3509         if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) {
3510                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3511                     "Setting WWPN and WWNN from qed dev_info.\n");
3512                 qedf->wwnn = qedf->dev_info.wwnn;
3513                 qedf->wwpn = qedf->dev_info.wwpn;
3514         } else {
3515                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3516                     "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n");
3517                 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0);
3518                 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0);
3519         }
3520         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,  "WWNN=%016llx "
3521                    "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn);
3522
3523         sprintf(host_buf, "host_%d", host->host_no);
3524         qed_ops->common->set_name(qedf->cdev, host_buf);
3525
3526         /* Allocate cmd mgr */
3527         qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf);
3528         if (!qedf->cmd_mgr) {
3529                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n");
3530                 rc = -ENOMEM;
3531                 goto err5;
3532         }
3533
3534         if (mode != QEDF_MODE_RECOVERY) {
3535                 host->transportt = qedf_fc_transport_template;
3536                 host->max_lun = qedf_max_lun;
3537                 host->max_cmd_len = QEDF_MAX_CDB_LEN;
3538                 host->max_id = QEDF_MAX_SESSIONS;
3539                 host->can_queue = FCOE_PARAMS_NUM_TASKS;
3540                 rc = scsi_add_host(host, &pdev->dev);
3541                 if (rc) {
3542                         QEDF_WARN(&qedf->dbg_ctx,
3543                                   "Error adding Scsi_Host rc=0x%x.\n", rc);
3544                         goto err6;
3545                 }
3546         }
3547
3548         memset(&params, 0, sizeof(params));
3549         params.mtu = QEDF_LL2_BUF_SIZE;
3550         ether_addr_copy(params.ll2_mac_address, qedf->mac);
3551
3552         /* Start LL2 processing thread */
3553         snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no);
3554         qedf->ll2_recv_wq =
3555                 create_workqueue(host_buf);
3556         if (!qedf->ll2_recv_wq) {
3557                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n");
3558                 rc = -ENOMEM;
3559                 goto err7;
3560         }
3561
3562 #ifdef CONFIG_DEBUG_FS
3563         qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops,
3564                             qedf_dbg_fops);
3565 #endif
3566
3567         /* Start LL2 */
3568         qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf);
3569         rc = qed_ops->ll2->start(qedf->cdev, &params);
3570         if (rc) {
3571                 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n");
3572                 goto err7;
3573         }
3574         set_bit(QEDF_LL2_STARTED, &qedf->flags);
3575
3576         /* Set initial FIP/FCoE VLAN to NULL */
3577         qedf->vlan_id = 0;
3578
3579         /*
3580          * No need to setup fcoe_ctlr or fc_lport objects during recovery since
3581          * they were not reaped during the unload process.
3582          */
3583         if (mode != QEDF_MODE_RECOVERY) {
3584                 /* Setup imbedded fcoe controller */
3585                 qedf_fcoe_ctlr_setup(qedf);
3586
3587                 /* Setup lport */
3588                 rc = qedf_lport_setup(qedf);
3589                 if (rc) {
3590                         QEDF_ERR(&(qedf->dbg_ctx),
3591                             "qedf_lport_setup failed.\n");
3592                         goto err7;
3593                 }
3594         }
3595
3596         sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no);
3597         qedf->timer_work_queue =
3598                 create_workqueue(host_buf);
3599         if (!qedf->timer_work_queue) {
3600                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer "
3601                           "workqueue.\n");
3602                 rc = -ENOMEM;
3603                 goto err7;
3604         }
3605
3606         /* DPC workqueue is not reaped during recovery unload */
3607         if (mode != QEDF_MODE_RECOVERY) {
3608                 sprintf(host_buf, "qedf_%u_dpc",
3609                     qedf->lport->host->host_no);
3610                 qedf->dpc_wq = create_workqueue(host_buf);
3611         }
3612         INIT_DELAYED_WORK(&qedf->recovery_work, qedf_recovery_handler);
3613
3614         /*
3615          * GRC dump and sysfs parameters are not reaped during the recovery
3616          * unload process.
3617          */
3618         if (mode != QEDF_MODE_RECOVERY) {
3619                 qedf->grcdump_size =
3620                     qed_ops->common->dbg_all_data_size(qedf->cdev);
3621                 if (qedf->grcdump_size) {
3622                         rc = qedf_alloc_grc_dump_buf(&qedf->grcdump,
3623                             qedf->grcdump_size);
3624                         if (rc) {
3625                                 QEDF_ERR(&(qedf->dbg_ctx),
3626                                     "GRC Dump buffer alloc failed.\n");
3627                                 qedf->grcdump = NULL;
3628                         }
3629
3630                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3631                             "grcdump: addr=%p, size=%u.\n",
3632                             qedf->grcdump, qedf->grcdump_size);
3633                 }
3634                 qedf_create_sysfs_ctx_attr(qedf);
3635
3636                 /* Initialize I/O tracing for this adapter */
3637                 spin_lock_init(&qedf->io_trace_lock);
3638                 qedf->io_trace_idx = 0;
3639         }
3640
3641         init_completion(&qedf->flogi_compl);
3642
3643         status = qed_ops->common->update_drv_state(qedf->cdev, true);
3644         if (status)
3645                 QEDF_ERR(&(qedf->dbg_ctx),
3646                         "Failed to send drv state to MFW.\n");
3647
3648         memset(&link_params, 0, sizeof(struct qed_link_params));
3649         link_params.link_up = true;
3650         status = qed_ops->common->set_link(qedf->cdev, &link_params);
3651         if (status)
3652                 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n");
3653
3654         /* Start/restart discovery */
3655         if (mode == QEDF_MODE_RECOVERY)
3656                 fcoe_ctlr_link_up(&qedf->ctlr);
3657         else
3658                 fc_fabric_login(lport);
3659
3660         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe done.\n");
3661
3662         clear_bit(QEDF_PROBING, &qedf->flags);
3663
3664         /* All good */
3665         return 0;
3666
3667 err7:
3668         if (qedf->ll2_recv_wq)
3669                 destroy_workqueue(qedf->ll2_recv_wq);
3670         fc_remove_host(qedf->lport->host);
3671         scsi_remove_host(qedf->lport->host);
3672 #ifdef CONFIG_DEBUG_FS
3673         qedf_dbg_host_exit(&(qedf->dbg_ctx));
3674 #endif
3675 err6:
3676         qedf_cmd_mgr_free(qedf->cmd_mgr);
3677 err5:
3678         qed_ops->stop(qedf->cdev);
3679 err4:
3680         qedf_free_fcoe_pf_param(qedf);
3681         qedf_sync_free_irqs(qedf);
3682 err3:
3683         qed_ops->common->slowpath_stop(qedf->cdev);
3684 err2:
3685         qed_ops->common->remove(qedf->cdev);
3686 err1:
3687         scsi_host_put(lport->host);
3688 err0:
3689         if (qedf) {
3690                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe done.\n");
3691
3692                 clear_bit(QEDF_PROBING, &qedf->flags);
3693         }
3694         return rc;
3695 }
3696
3697 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
3698 {
3699         return __qedf_probe(pdev, QEDF_MODE_NORMAL);
3700 }
3701
3702 static void __qedf_remove(struct pci_dev *pdev, int mode)
3703 {
3704         struct qedf_ctx *qedf;
3705         int rc;
3706
3707         if (!pdev) {
3708                 QEDF_ERR(NULL, "pdev is NULL.\n");
3709                 return;
3710         }
3711
3712         qedf = pci_get_drvdata(pdev);
3713
3714         /*
3715          * Prevent race where we're in board disable work and then try to
3716          * rmmod the module.
3717          */
3718         if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
3719                 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n");
3720                 return;
3721         }
3722
3723         if (mode != QEDF_MODE_RECOVERY)
3724                 set_bit(QEDF_UNLOADING, &qedf->flags);
3725
3726         /* Logoff the fabric to upload all connections */
3727         if (mode == QEDF_MODE_RECOVERY)
3728                 fcoe_ctlr_link_down(&qedf->ctlr);
3729         else
3730                 fc_fabric_logoff(qedf->lport);
3731
3732         if (!qedf_wait_for_upload(qedf))
3733                 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n");
3734
3735 #ifdef CONFIG_DEBUG_FS
3736         qedf_dbg_host_exit(&(qedf->dbg_ctx));
3737 #endif
3738
3739         /* Stop any link update handling */
3740         cancel_delayed_work_sync(&qedf->link_update);
3741         destroy_workqueue(qedf->link_update_wq);
3742         qedf->link_update_wq = NULL;
3743
3744         if (qedf->timer_work_queue)
3745                 destroy_workqueue(qedf->timer_work_queue);
3746
3747         /* Stop Light L2 */
3748         clear_bit(QEDF_LL2_STARTED, &qedf->flags);
3749         qed_ops->ll2->stop(qedf->cdev);
3750         if (qedf->ll2_recv_wq)
3751                 destroy_workqueue(qedf->ll2_recv_wq);
3752
3753         /* Stop fastpath */
3754         qedf_sync_free_irqs(qedf);
3755         qedf_destroy_sb(qedf);
3756
3757         /*
3758          * During recovery don't destroy OS constructs that represent the
3759          * physical port.
3760          */
3761         if (mode != QEDF_MODE_RECOVERY) {
3762                 qedf_free_grc_dump_buf(&qedf->grcdump);
3763                 qedf_remove_sysfs_ctx_attr(qedf);
3764
3765                 /* Remove all SCSI/libfc/libfcoe structures */
3766                 fcoe_ctlr_destroy(&qedf->ctlr);
3767                 fc_lport_destroy(qedf->lport);
3768                 fc_remove_host(qedf->lport->host);
3769                 scsi_remove_host(qedf->lport->host);
3770         }
3771
3772         qedf_cmd_mgr_free(qedf->cmd_mgr);
3773
3774         if (mode != QEDF_MODE_RECOVERY) {
3775                 fc_exch_mgr_free(qedf->lport);
3776                 fc_lport_free_stats(qedf->lport);
3777
3778                 /* Wait for all vports to be reaped */
3779                 qedf_wait_for_vport_destroy(qedf);
3780         }
3781
3782         /*
3783          * Now that all connections have been uploaded we can stop the
3784          * rest of the qed operations
3785          */
3786         qed_ops->stop(qedf->cdev);
3787
3788         if (mode != QEDF_MODE_RECOVERY) {
3789                 if (qedf->dpc_wq) {
3790                         /* Stop general DPC handling */
3791                         destroy_workqueue(qedf->dpc_wq);
3792                         qedf->dpc_wq = NULL;
3793                 }
3794         }
3795
3796         /* Final shutdown for the board */
3797         qedf_free_fcoe_pf_param(qedf);
3798         if (mode != QEDF_MODE_RECOVERY) {
3799                 qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3800                 pci_set_drvdata(pdev, NULL);
3801         }
3802
3803         rc = qed_ops->common->update_drv_state(qedf->cdev, false);
3804         if (rc)
3805                 QEDF_ERR(&(qedf->dbg_ctx),
3806                         "Failed to send drv state to MFW.\n");
3807
3808         if (mode != QEDF_MODE_RECOVERY && qedf->devlink) {
3809                 qed_ops->common->devlink_unregister(qedf->devlink);
3810                 qedf->devlink = NULL;
3811         }
3812
3813         qed_ops->common->slowpath_stop(qedf->cdev);
3814         qed_ops->common->remove(qedf->cdev);
3815
3816         mempool_destroy(qedf->io_mempool);
3817
3818         /* Only reap the Scsi_host on a real removal */
3819         if (mode != QEDF_MODE_RECOVERY)
3820                 scsi_host_put(qedf->lport->host);
3821 }
3822
3823 static void qedf_remove(struct pci_dev *pdev)
3824 {
3825         /* Check to make sure this function wasn't already disabled */
3826         if (!atomic_read(&pdev->enable_cnt))
3827                 return;
3828
3829         __qedf_remove(pdev, QEDF_MODE_NORMAL);
3830 }
3831
3832 void qedf_wq_grcdump(struct work_struct *work)
3833 {
3834         struct qedf_ctx *qedf =
3835             container_of(work, struct qedf_ctx, grcdump_work.work);
3836
3837         QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n");
3838         qedf_capture_grc_dump(qedf);
3839 }
3840
3841 void qedf_schedule_hw_err_handler(void *dev, enum qed_hw_err_type err_type)
3842 {
3843         struct qedf_ctx *qedf = dev;
3844
3845         QEDF_ERR(&(qedf->dbg_ctx),
3846                         "Hardware error handler scheduled, event=%d.\n",
3847                         err_type);
3848
3849         if (test_bit(QEDF_IN_RECOVERY, &qedf->flags)) {
3850                 QEDF_ERR(&(qedf->dbg_ctx),
3851                                 "Already in recovery, not scheduling board disable work.\n");
3852                 return;
3853         }
3854
3855         switch (err_type) {
3856         case QED_HW_ERR_FAN_FAIL:
3857                 schedule_delayed_work(&qedf->board_disable_work, 0);
3858                 break;
3859         case QED_HW_ERR_MFW_RESP_FAIL:
3860         case QED_HW_ERR_HW_ATTN:
3861         case QED_HW_ERR_DMAE_FAIL:
3862         case QED_HW_ERR_FW_ASSERT:
3863                 /* Prevent HW attentions from being reasserted */
3864                 qed_ops->common->attn_clr_enable(qedf->cdev, true);
3865                 break;
3866         case QED_HW_ERR_RAMROD_FAIL:
3867                 /* Prevent HW attentions from being reasserted */
3868                 qed_ops->common->attn_clr_enable(qedf->cdev, true);
3869
3870                 if (qedf_enable_recovery && qedf->devlink)
3871                         qed_ops->common->report_fatal_error(qedf->devlink,
3872                                 err_type);
3873
3874                 break;
3875         default:
3876                 break;
3877         }
3878 }
3879
3880 /*
3881  * Protocol TLV handler
3882  */
3883 void qedf_get_protocol_tlv_data(void *dev, void *data)
3884 {
3885         struct qedf_ctx *qedf = dev;
3886         struct qed_mfw_tlv_fcoe *fcoe = data;
3887         struct fc_lport *lport;
3888         struct Scsi_Host *host;
3889         struct fc_host_attrs *fc_host;
3890         struct fc_host_statistics *hst;
3891
3892         if (!qedf) {
3893                 QEDF_ERR(NULL, "qedf is null.\n");
3894                 return;
3895         }
3896
3897         if (test_bit(QEDF_PROBING, &qedf->flags)) {
3898                 QEDF_ERR(&qedf->dbg_ctx, "Function is still probing.\n");
3899                 return;
3900         }
3901
3902         lport = qedf->lport;
3903         host = lport->host;
3904         fc_host = shost_to_fc_host(host);
3905
3906         /* Force a refresh of the fc_host stats including offload stats */
3907         hst = qedf_fc_get_host_stats(host);
3908
3909         fcoe->qos_pri_set = true;
3910         fcoe->qos_pri = 3; /* Hard coded to 3 in driver */
3911
3912         fcoe->ra_tov_set = true;
3913         fcoe->ra_tov = lport->r_a_tov;
3914
3915         fcoe->ed_tov_set = true;
3916         fcoe->ed_tov = lport->e_d_tov;
3917
3918         fcoe->npiv_state_set = true;
3919         fcoe->npiv_state = 1; /* NPIV always enabled */
3920
3921         fcoe->num_npiv_ids_set = true;
3922         fcoe->num_npiv_ids = fc_host->npiv_vports_inuse;
3923
3924         /* Certain attributes we only want to set if we've selected an FCF */
3925         if (qedf->ctlr.sel_fcf) {
3926                 fcoe->switch_name_set = true;
3927                 u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name);
3928         }
3929
3930         fcoe->port_state_set = true;
3931         /* For qedf we're either link down or fabric attach */
3932         if (lport->link_up)
3933                 fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC;
3934         else
3935                 fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE;
3936
3937         fcoe->link_failures_set = true;
3938         fcoe->link_failures = (u16)hst->link_failure_count;
3939
3940         fcoe->fcoe_txq_depth_set = true;
3941         fcoe->fcoe_rxq_depth_set = true;
3942         fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS;
3943         fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS;
3944
3945         fcoe->fcoe_rx_frames_set = true;
3946         fcoe->fcoe_rx_frames = hst->rx_frames;
3947
3948         fcoe->fcoe_tx_frames_set = true;
3949         fcoe->fcoe_tx_frames = hst->tx_frames;
3950
3951         fcoe->fcoe_rx_bytes_set = true;
3952         fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000;
3953
3954         fcoe->fcoe_tx_bytes_set = true;
3955         fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000;
3956
3957         fcoe->crc_count_set = true;
3958         fcoe->crc_count = hst->invalid_crc_count;
3959
3960         fcoe->tx_abts_set = true;
3961         fcoe->tx_abts = hst->fcp_packet_aborts;
3962
3963         fcoe->tx_lun_rst_set = true;
3964         fcoe->tx_lun_rst = qedf->lun_resets;
3965
3966         fcoe->abort_task_sets_set = true;
3967         fcoe->abort_task_sets = qedf->packet_aborts;
3968
3969         fcoe->scsi_busy_set = true;
3970         fcoe->scsi_busy = qedf->busy;
3971
3972         fcoe->scsi_tsk_full_set = true;
3973         fcoe->scsi_tsk_full = qedf->task_set_fulls;
3974 }
3975
3976 /* Deferred work function to perform soft context reset on STAG change */
3977 void qedf_stag_change_work(struct work_struct *work)
3978 {
3979         struct qedf_ctx *qedf =
3980             container_of(work, struct qedf_ctx, stag_work.work);
3981
3982         printk_ratelimited("[%s]:[%s:%d]:%d: Performing software context reset.",
3983                         dev_name(&qedf->pdev->dev), __func__, __LINE__,
3984                         qedf->dbg_ctx.host_no);
3985         qedf_ctx_soft_reset(qedf->lport);
3986 }
3987
3988 static void qedf_shutdown(struct pci_dev *pdev)
3989 {
3990         __qedf_remove(pdev, QEDF_MODE_NORMAL);
3991 }
3992
3993 /*
3994  * Recovery handler code
3995  */
3996 static void qedf_schedule_recovery_handler(void *dev)
3997 {
3998         struct qedf_ctx *qedf = dev;
3999
4000         QEDF_ERR(&qedf->dbg_ctx, "Recovery handler scheduled.\n");
4001         schedule_delayed_work(&qedf->recovery_work, 0);
4002 }
4003
4004 static void qedf_recovery_handler(struct work_struct *work)
4005 {
4006         struct qedf_ctx *qedf =
4007             container_of(work, struct qedf_ctx, recovery_work.work);
4008
4009         if (test_and_set_bit(QEDF_IN_RECOVERY, &qedf->flags))
4010                 return;
4011
4012         /*
4013          * Call common_ops->recovery_prolog to allow the MFW to quiesce
4014          * any PCI transactions.
4015          */
4016         qed_ops->common->recovery_prolog(qedf->cdev);
4017
4018         QEDF_ERR(&qedf->dbg_ctx, "Recovery work start.\n");
4019         __qedf_remove(qedf->pdev, QEDF_MODE_RECOVERY);
4020         /*
4021          * Reset link and dcbx to down state since we will not get a link down
4022          * event from the MFW but calling __qedf_remove will essentially be a
4023          * link down event.
4024          */
4025         atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
4026         atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
4027         __qedf_probe(qedf->pdev, QEDF_MODE_RECOVERY);
4028         clear_bit(QEDF_IN_RECOVERY, &qedf->flags);
4029         QEDF_ERR(&qedf->dbg_ctx, "Recovery work complete.\n");
4030 }
4031
4032 /* Generic TLV data callback */
4033 void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
4034 {
4035         struct qedf_ctx *qedf;
4036
4037         if (!dev) {
4038                 QEDF_INFO(NULL, QEDF_LOG_EVT,
4039                           "dev is NULL so ignoring get_generic_tlv_data request.\n");
4040                 return;
4041         }
4042         qedf = (struct qedf_ctx *)dev;
4043
4044         memset(data, 0, sizeof(struct qed_generic_tlvs));
4045         ether_addr_copy(data->mac[0], qedf->mac);
4046 }
4047
4048 /*
4049  * Module Init/Remove
4050  */
4051
4052 static int __init qedf_init(void)
4053 {
4054         int ret;
4055
4056         /* If debug=1 passed, set the default log mask */
4057         if (qedf_debug == QEDF_LOG_DEFAULT)
4058                 qedf_debug = QEDF_DEFAULT_LOG_MASK;
4059
4060         /*
4061          * Check that default prio for FIP/FCoE traffic is between 0..7 if a
4062          * value has been set
4063          */
4064         if (qedf_default_prio > -1)
4065                 if (qedf_default_prio > 7) {
4066                         qedf_default_prio = QEDF_DEFAULT_PRIO;
4067                         QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n",
4068                             QEDF_DEFAULT_PRIO);
4069                 }
4070
4071         /* Print driver banner */
4072         QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR,
4073                    QEDF_VERSION);
4074
4075         /* Create kmem_cache for qedf_io_work structs */
4076         qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache",
4077             sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL);
4078         if (qedf_io_work_cache == NULL) {
4079                 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n");
4080                 goto err1;
4081         }
4082         QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n",
4083             qedf_io_work_cache);
4084
4085         qed_ops = qed_get_fcoe_ops();
4086         if (!qed_ops) {
4087                 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n");
4088                 goto err1;
4089         }
4090
4091 #ifdef CONFIG_DEBUG_FS
4092         qedf_dbg_init("qedf");
4093 #endif
4094
4095         qedf_fc_transport_template =
4096             fc_attach_transport(&qedf_fc_transport_fn);
4097         if (!qedf_fc_transport_template) {
4098                 QEDF_ERR(NULL, "Could not register with FC transport\n");
4099                 goto err2;
4100         }
4101
4102         qedf_fc_vport_transport_template =
4103                 fc_attach_transport(&qedf_fc_vport_transport_fn);
4104         if (!qedf_fc_vport_transport_template) {
4105                 QEDF_ERR(NULL, "Could not register vport template with FC "
4106                           "transport\n");
4107                 goto err3;
4108         }
4109
4110         qedf_io_wq = create_workqueue("qedf_io_wq");
4111         if (!qedf_io_wq) {
4112                 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n");
4113                 goto err4;
4114         }
4115
4116         qedf_cb_ops.get_login_failures = qedf_get_login_failures;
4117
4118         ret = pci_register_driver(&qedf_pci_driver);
4119         if (ret) {
4120                 QEDF_ERR(NULL, "Failed to register driver\n");
4121                 goto err5;
4122         }
4123
4124         return 0;
4125
4126 err5:
4127         destroy_workqueue(qedf_io_wq);
4128 err4:
4129         fc_release_transport(qedf_fc_vport_transport_template);
4130 err3:
4131         fc_release_transport(qedf_fc_transport_template);
4132 err2:
4133 #ifdef CONFIG_DEBUG_FS
4134         qedf_dbg_exit();
4135 #endif
4136         qed_put_fcoe_ops();
4137 err1:
4138         return -EINVAL;
4139 }
4140
4141 static void __exit qedf_cleanup(void)
4142 {
4143         pci_unregister_driver(&qedf_pci_driver);
4144
4145         destroy_workqueue(qedf_io_wq);
4146
4147         fc_release_transport(qedf_fc_vport_transport_template);
4148         fc_release_transport(qedf_fc_transport_template);
4149 #ifdef CONFIG_DEBUG_FS
4150         qedf_dbg_exit();
4151 #endif
4152         qed_put_fcoe_ops();
4153
4154         kmem_cache_destroy(qedf_io_work_cache);
4155 }
4156
4157 MODULE_LICENSE("GPL");
4158 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx FCoE Module");
4159 MODULE_AUTHOR("QLogic Corporation");
4160 MODULE_VERSION(QEDF_VERSION);
4161 module_init(qedf_init);
4162 module_exit(qedf_cleanup);