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 = (struct qedf_ioreq *)sc_cmd->SCp.ptr;
 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 = NULL;
 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 (fcport && 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         rcu_read_unlock();
 903         return false;
 904
 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                 QEDF_ERR(NULL, "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_attrs    = qedf_host_attrs,
 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 };
1000
1001 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen)
1002 {
1003         int rc;
1004
1005         spin_lock(&qedf_global_lock);
1006         rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global);
1007         spin_unlock(&qedf_global_lock);
1008
1009         return rc;
1010 }
1011
1012 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id)
1013 {
1014         struct qedf_rport *fcport;
1015         struct fc_rport_priv *rdata;
1016
1017         rcu_read_lock();
1018         list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
1019                 rdata = fcport->rdata;
1020                 if (rdata == NULL)
1021                         continue;
1022                 if (rdata->ids.port_id == port_id) {
1023                         rcu_read_unlock();
1024                         return fcport;
1025                 }
1026         }
1027         rcu_read_unlock();
1028
1029         /* Return NULL to caller to let them know fcport was not found */
1030         return NULL;
1031 }
1032
1033 /* Transmits an ELS frame over an offloaded session */
1034 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp)
1035 {
1036         struct fc_frame_header *fh;
1037         int rc = 0;
1038
1039         fh = fc_frame_header_get(fp);
1040         if ((fh->fh_type == FC_TYPE_ELS) &&
1041             (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
1042                 switch (fc_frame_payload_op(fp)) {
1043                 case ELS_ADISC:
1044                         qedf_send_adisc(fcport, fp);
1045                         rc = 1;
1046                         break;
1047                 }
1048         }
1049
1050         return rc;
1051 }
1052
1053 /*
1054  * qedf_xmit - qedf FCoE frame transmit function
1055  */
1056 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp)
1057 {
1058         struct fc_lport         *base_lport;
1059         struct qedf_ctx         *qedf;
1060         struct ethhdr           *eh;
1061         struct fcoe_crc_eof     *cp;
1062         struct sk_buff          *skb;
1063         struct fc_frame_header  *fh;
1064         struct fcoe_hdr         *hp;
1065         u8                      sof, eof;
1066         u32                     crc;
1067         unsigned int            hlen, tlen, elen;
1068         int                     wlen;
1069         struct fc_stats         *stats;
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         stats = per_cpu_ptr(lport->stats, get_cpu());
1218         stats->TxFrames++;
1219         stats->TxWords += wlen;
1220         put_cpu();
1221
1222         /* Get VLAN ID from skb for printing purposes */
1223         __vlan_hwaccel_get_tag(skb, &vlan_tci);
1224
1225         /* send down to lld */
1226         fr_dev(fp) = lport;
1227         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: "
1228             "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n",
1229             ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type,
1230             vlan_tci);
1231         if (qedf_dump_frames)
1232                 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
1233                     1, skb->data, skb->len, false);
1234         rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, 0);
1235         if (rc) {
1236                 QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n", rc);
1237                 kfree_skb(skb);
1238                 return rc;
1239         }
1240
1241         return 0;
1242 }
1243
1244 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1245 {
1246         int rval = 0;
1247         u32 *pbl;
1248         dma_addr_t page;
1249         int num_pages;
1250
1251         /* Calculate appropriate queue and PBL sizes */
1252         fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
1253         fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE);
1254         fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) *
1255             sizeof(void *);
1256         fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE;
1257
1258         fcport->sq = dma_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1259                                         &fcport->sq_dma, GFP_KERNEL);
1260         if (!fcport->sq) {
1261                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n");
1262                 rval = 1;
1263                 goto out;
1264         }
1265
1266         fcport->sq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
1267                                             fcport->sq_pbl_size,
1268                                             &fcport->sq_pbl_dma, GFP_KERNEL);
1269         if (!fcport->sq_pbl) {
1270                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n");
1271                 rval = 1;
1272                 goto out_free_sq;
1273         }
1274
1275         /* Create PBL */
1276         num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE;
1277         page = fcport->sq_dma;
1278         pbl = (u32 *)fcport->sq_pbl;
1279
1280         while (num_pages--) {
1281                 *pbl = U64_LO(page);
1282                 pbl++;
1283                 *pbl = U64_HI(page);
1284                 pbl++;
1285                 page += QEDF_PAGE_SIZE;
1286         }
1287
1288         return rval;
1289
1290 out_free_sq:
1291         dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq,
1292             fcport->sq_dma);
1293 out:
1294         return rval;
1295 }
1296
1297 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1298 {
1299         if (fcport->sq_pbl)
1300                 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size,
1301                     fcport->sq_pbl, fcport->sq_pbl_dma);
1302         if (fcport->sq)
1303                 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1304                     fcport->sq, fcport->sq_dma);
1305 }
1306
1307 static int qedf_offload_connection(struct qedf_ctx *qedf,
1308         struct qedf_rport *fcport)
1309 {
1310         struct qed_fcoe_params_offload conn_info;
1311         u32 port_id;
1312         int rval;
1313         uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe));
1314
1315         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection "
1316                    "portid=%06x.\n", fcport->rdata->ids.port_id);
1317         rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle,
1318             &fcport->fw_cid, &fcport->p_doorbell);
1319         if (rval) {
1320                 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection "
1321                            "for portid=%06x.\n", fcport->rdata->ids.port_id);
1322                 rval = 1; /* For some reason qed returns 0 on failure here */
1323                 goto out;
1324         }
1325
1326         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x "
1327                    "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id,
1328                    fcport->fw_cid, fcport->handle);
1329
1330         memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload));
1331
1332         /* Fill in the offload connection info */
1333         conn_info.sq_pbl_addr = fcport->sq_pbl_dma;
1334
1335         conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl);
1336         conn_info.sq_next_page_addr =
1337             (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8));
1338
1339         /* Need to use our FCoE MAC for the offload session */
1340         ether_addr_copy(conn_info.src_mac, qedf->data_src_addr);
1341
1342         ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr);
1343
1344         conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size;
1345         conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov;
1346         conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */
1347         conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size;
1348
1349         /* Set VLAN data */
1350         conn_info.vlan_tag = qedf->vlan_id <<
1351             FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT;
1352         conn_info.vlan_tag |=
1353             qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT;
1354         conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK <<
1355             FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT);
1356
1357         /* Set host port source id */
1358         port_id = fc_host_port_id(qedf->lport->host);
1359         fcport->sid = port_id;
1360         conn_info.s_id.addr_hi = (port_id & 0x000000FF);
1361         conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1362         conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1363
1364         conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq;
1365
1366         /* Set remote port destination id */
1367         port_id = fcport->rdata->rport->port_id;
1368         conn_info.d_id.addr_hi = (port_id & 0x000000FF);
1369         conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1370         conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1371
1372         conn_info.def_q_idx = 0; /* Default index for send queue? */
1373
1374         /* Set FC-TAPE specific flags if needed */
1375         if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) {
1376                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN,
1377                     "Enable CONF, REC for portid=%06x.\n",
1378                     fcport->rdata->ids.port_id);
1379                 conn_info.flags |= 1 <<
1380                     FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT;
1381                 conn_info.flags |=
1382                     ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
1383                     FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT;
1384         }
1385
1386         rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info);
1387         if (rval) {
1388                 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection "
1389                            "for portid=%06x.\n", fcport->rdata->ids.port_id);
1390                 goto out_free_conn;
1391         } else
1392                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload "
1393                            "succeeded portid=%06x total_sqe=%d.\n",
1394                            fcport->rdata->ids.port_id, total_sqe);
1395
1396         spin_lock_init(&fcport->rport_lock);
1397         atomic_set(&fcport->free_sqes, total_sqe);
1398         return 0;
1399 out_free_conn:
1400         qed_ops->release_conn(qedf->cdev, fcport->handle);
1401 out:
1402         return rval;
1403 }
1404
1405 #define QEDF_TERM_BUFF_SIZE             10
1406 static void qedf_upload_connection(struct qedf_ctx *qedf,
1407         struct qedf_rport *fcport)
1408 {
1409         void *term_params;
1410         dma_addr_t term_params_dma;
1411
1412         /* Term params needs to be a DMA coherent buffer as qed shared the
1413          * physical DMA address with the firmware. The buffer may be used in
1414          * the receive path so we may eventually have to move this.
1415          */
1416         term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE,
1417                 &term_params_dma, GFP_KERNEL);
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
1866         rc = qedf_vport_libfc_config(vport, vn_port);
1867         if (rc) {
1868                 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory "
1869                     "for lport stats.\n");
1870                 goto err;
1871         }
1872
1873         fc_set_wwnn(vn_port, vport->node_name);
1874         fc_set_wwpn(vn_port, vport->port_name);
1875         vport_qedf->wwnn = vn_port->wwnn;
1876         vport_qedf->wwpn = vn_port->wwpn;
1877
1878         vn_port->host->transportt = qedf_fc_vport_transport_template;
1879         vn_port->host->can_queue = FCOE_PARAMS_NUM_TASKS;
1880         vn_port->host->max_lun = qedf_max_lun;
1881         vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD;
1882         vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN;
1883         vn_port->host->max_id = QEDF_MAX_SESSIONS;
1884
1885         rc = scsi_add_host(vn_port->host, &vport->dev);
1886         if (rc) {
1887                 QEDF_WARN(&base_qedf->dbg_ctx,
1888                           "Error adding Scsi_Host rc=0x%x.\n", rc);
1889                 goto err;
1890         }
1891
1892         /* Set default dev_loss_tmo based on module parameter */
1893         fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo;
1894
1895         /* Init libfc stuffs */
1896         memcpy(&vn_port->tt, &qedf_lport_template,
1897                 sizeof(qedf_lport_template));
1898         fc_exch_init(vn_port);
1899         fc_elsct_init(vn_port);
1900         fc_lport_init(vn_port);
1901         fc_disc_init(vn_port);
1902         fc_disc_config(vn_port, vn_port);
1903
1904
1905         /* Allocate the exchange manager */
1906         shost = vport_to_shost(vport);
1907         n_port = shost_priv(shost);
1908         fc_exch_mgr_list_clone(n_port, vn_port);
1909
1910         /* Set max frame size */
1911         fc_set_mfs(vn_port, QEDF_MFS);
1912
1913         fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN;
1914
1915         if (disabled) {
1916                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1917         } else {
1918                 vn_port->boot_time = jiffies;
1919                 fc_fabric_login(vn_port);
1920                 fc_vport_setlink(vn_port);
1921         }
1922
1923         QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n",
1924                    vn_port);
1925
1926         /* Set up debug context for vport */
1927         vport_qedf->dbg_ctx.host_no = vn_port->host->host_no;
1928         vport_qedf->dbg_ctx.pdev = base_qedf->pdev;
1929
1930         return 0;
1931
1932 err:
1933         scsi_host_put(vn_port->host);
1934         return rc;
1935 }
1936
1937 static int qedf_vport_destroy(struct fc_vport *vport)
1938 {
1939         struct Scsi_Host *shost = vport_to_shost(vport);
1940         struct fc_lport *n_port = shost_priv(shost);
1941         struct fc_lport *vn_port = vport->dd_data;
1942         struct qedf_ctx *qedf = lport_priv(vn_port);
1943
1944         if (!qedf) {
1945                 QEDF_ERR(NULL, "qedf is NULL.\n");
1946                 goto out;
1947         }
1948
1949         /* Set unloading bit on vport qedf_ctx to prevent more I/O */
1950         set_bit(QEDF_UNLOADING, &qedf->flags);
1951
1952         mutex_lock(&n_port->lp_mutex);
1953         list_del(&vn_port->list);
1954         mutex_unlock(&n_port->lp_mutex);
1955
1956         fc_fabric_logoff(vn_port);
1957         fc_lport_destroy(vn_port);
1958
1959         /* Detach from scsi-ml */
1960         fc_remove_host(vn_port->host);
1961         scsi_remove_host(vn_port->host);
1962
1963         /*
1964          * Only try to release the exchange manager if the vn_port
1965          * configuration is complete.
1966          */
1967         if (vn_port->state == LPORT_ST_READY)
1968                 fc_exch_mgr_free(vn_port);
1969
1970         /* Free memory used by statistical counters */
1971         fc_lport_free_stats(vn_port);
1972
1973         /* Release Scsi_Host */
1974         scsi_host_put(vn_port->host);
1975
1976 out:
1977         return 0;
1978 }
1979
1980 static int qedf_vport_disable(struct fc_vport *vport, bool disable)
1981 {
1982         struct fc_lport *lport = vport->dd_data;
1983
1984         if (disable) {
1985                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1986                 fc_fabric_logoff(lport);
1987         } else {
1988                 lport->boot_time = jiffies;
1989                 fc_fabric_login(lport);
1990                 fc_vport_setlink(lport);
1991         }
1992         return 0;
1993 }
1994
1995 /*
1996  * During removal we need to wait for all the vports associated with a port
1997  * to be destroyed so we avoid a race condition where libfc is still trying
1998  * to reap vports while the driver remove function has already reaped the
1999  * driver contexts associated with the physical port.
2000  */
2001 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf)
2002 {
2003         struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host);
2004
2005         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
2006             "Entered.\n");
2007         while (fc_host->npiv_vports_inuse > 0) {
2008                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
2009                     "Waiting for all vports to be reaped.\n");
2010                 msleep(1000);
2011         }
2012 }
2013
2014 /**
2015  * qedf_fcoe_reset - Resets the fcoe
2016  *
2017  * @shost: shost the reset is from
2018  *
2019  * Returns: always 0
2020  */
2021 static int qedf_fcoe_reset(struct Scsi_Host *shost)
2022 {
2023         struct fc_lport *lport = shost_priv(shost);
2024
2025         qedf_ctx_soft_reset(lport);
2026         return 0;
2027 }
2028
2029 static void qedf_get_host_port_id(struct Scsi_Host *shost)
2030 {
2031         struct fc_lport *lport = shost_priv(shost);
2032
2033         fc_host_port_id(shost) = lport->port_id;
2034 }
2035
2036 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host
2037         *shost)
2038 {
2039         struct fc_host_statistics *qedf_stats;
2040         struct fc_lport *lport = shost_priv(shost);
2041         struct qedf_ctx *qedf = lport_priv(lport);
2042         struct qed_fcoe_stats *fw_fcoe_stats;
2043
2044         qedf_stats = fc_get_host_stats(shost);
2045
2046         /* We don't collect offload stats for specific NPIV ports */
2047         if (lport->vport)
2048                 goto out;
2049
2050         fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL);
2051         if (!fw_fcoe_stats) {
2052                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for "
2053                     "fw_fcoe_stats.\n");
2054                 goto out;
2055         }
2056
2057         mutex_lock(&qedf->stats_mutex);
2058
2059         /* Query firmware for offload stats */
2060         qed_ops->get_stats(qedf->cdev, fw_fcoe_stats);
2061
2062         /*
2063          * The expectation is that we add our offload stats to the stats
2064          * being maintained by libfc each time the fc_get_host_status callback
2065          * is invoked. The additions are not carried over for each call to
2066          * the fc_get_host_stats callback.
2067          */
2068         qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt +
2069             fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt +
2070             fw_fcoe_stats->fcoe_tx_other_pkt_cnt;
2071         qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt +
2072             fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt +
2073             fw_fcoe_stats->fcoe_rx_other_pkt_cnt;
2074         qedf_stats->fcp_input_megabytes +=
2075             do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000);
2076         qedf_stats->fcp_output_megabytes +=
2077             do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000);
2078         qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4;
2079         qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4;
2080         qedf_stats->invalid_crc_count +=
2081             fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt;
2082         qedf_stats->dumped_frames =
2083             fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
2084         qedf_stats->error_frames +=
2085             fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
2086         qedf_stats->fcp_input_requests += qedf->input_requests;
2087         qedf_stats->fcp_output_requests += qedf->output_requests;
2088         qedf_stats->fcp_control_requests += qedf->control_requests;
2089         qedf_stats->fcp_packet_aborts += qedf->packet_aborts;
2090         qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures;
2091
2092         mutex_unlock(&qedf->stats_mutex);
2093         kfree(fw_fcoe_stats);
2094 out:
2095         return qedf_stats;
2096 }
2097
2098 static struct fc_function_template qedf_fc_transport_fn = {
2099         .show_host_node_name = 1,
2100         .show_host_port_name = 1,
2101         .show_host_supported_classes = 1,
2102         .show_host_supported_fc4s = 1,
2103         .show_host_active_fc4s = 1,
2104         .show_host_maxframe_size = 1,
2105
2106         .get_host_port_id = qedf_get_host_port_id,
2107         .show_host_port_id = 1,
2108         .show_host_supported_speeds = 1,
2109         .get_host_speed = fc_get_host_speed,
2110         .show_host_speed = 1,
2111         .show_host_port_type = 1,
2112         .get_host_port_state = fc_get_host_port_state,
2113         .show_host_port_state = 1,
2114         .show_host_symbolic_name = 1,
2115
2116         /*
2117          * Tell FC transport to allocate enough space to store the backpointer
2118          * for the associate qedf_rport struct.
2119          */
2120         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2121                                 sizeof(struct qedf_rport)),
2122         .show_rport_maxframe_size = 1,
2123         .show_rport_supported_classes = 1,
2124         .show_host_fabric_name = 1,
2125         .show_starget_node_name = 1,
2126         .show_starget_port_name = 1,
2127         .show_starget_port_id = 1,
2128         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2129         .show_rport_dev_loss_tmo = 1,
2130         .get_fc_host_stats = qedf_fc_get_host_stats,
2131         .issue_fc_host_lip = qedf_fcoe_reset,
2132         .vport_create = qedf_vport_create,
2133         .vport_delete = qedf_vport_destroy,
2134         .vport_disable = qedf_vport_disable,
2135         .bsg_request = fc_lport_bsg_request,
2136 };
2137
2138 static struct fc_function_template qedf_fc_vport_transport_fn = {
2139         .show_host_node_name = 1,
2140         .show_host_port_name = 1,
2141         .show_host_supported_classes = 1,
2142         .show_host_supported_fc4s = 1,
2143         .show_host_active_fc4s = 1,
2144         .show_host_maxframe_size = 1,
2145         .show_host_port_id = 1,
2146         .show_host_supported_speeds = 1,
2147         .get_host_speed = fc_get_host_speed,
2148         .show_host_speed = 1,
2149         .show_host_port_type = 1,
2150         .get_host_port_state = fc_get_host_port_state,
2151         .show_host_port_state = 1,
2152         .show_host_symbolic_name = 1,
2153         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2154                                 sizeof(struct qedf_rport)),
2155         .show_rport_maxframe_size = 1,
2156         .show_rport_supported_classes = 1,
2157         .show_host_fabric_name = 1,
2158         .show_starget_node_name = 1,
2159         .show_starget_port_name = 1,
2160         .show_starget_port_id = 1,
2161         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2162         .show_rport_dev_loss_tmo = 1,
2163         .get_fc_host_stats = fc_get_host_stats,
2164         .issue_fc_host_lip = qedf_fcoe_reset,
2165         .bsg_request = fc_lport_bsg_request,
2166 };
2167
2168 static bool qedf_fp_has_work(struct qedf_fastpath *fp)
2169 {
2170         struct qedf_ctx *qedf = fp->qedf;
2171         struct global_queue *que;
2172         struct qed_sb_info *sb_info = fp->sb_info;
2173         struct status_block_e4 *sb = sb_info->sb_virt;
2174         u16 prod_idx;
2175
2176         /* Get the pointer to the global CQ this completion is on */
2177         que = qedf->global_queues[fp->sb_id];
2178
2179         /* Be sure all responses have been written to PI */
2180         rmb();
2181
2182         /* Get the current firmware producer index */
2183         prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
2184
2185         return (que->cq_prod_idx != prod_idx);
2186 }
2187
2188 /*
2189  * Interrupt handler code.
2190  */
2191
2192 /* Process completion queue and copy CQE contents for deferred processesing
2193  *
2194  * Return true if we should wake the I/O thread, false if not.
2195  */
2196 static bool qedf_process_completions(struct qedf_fastpath *fp)
2197 {
2198         struct qedf_ctx *qedf = fp->qedf;
2199         struct qed_sb_info *sb_info = fp->sb_info;
2200         struct status_block_e4 *sb = sb_info->sb_virt;
2201         struct global_queue *que;
2202         u16 prod_idx;
2203         struct fcoe_cqe *cqe;
2204         struct qedf_io_work *io_work;
2205         int num_handled = 0;
2206         unsigned int cpu;
2207         struct qedf_ioreq *io_req = NULL;
2208         u16 xid;
2209         u16 new_cqes;
2210         u32 comp_type;
2211
2212         /* Get the current firmware producer index */
2213         prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
2214
2215         /* Get the pointer to the global CQ this completion is on */
2216         que = qedf->global_queues[fp->sb_id];
2217
2218         /* Calculate the amount of new elements since last processing */
2219         new_cqes = (prod_idx >= que->cq_prod_idx) ?
2220             (prod_idx - que->cq_prod_idx) :
2221             0x10000 - que->cq_prod_idx + prod_idx;
2222
2223         /* Save producer index */
2224         que->cq_prod_idx = prod_idx;
2225
2226         while (new_cqes) {
2227                 fp->completions++;
2228                 num_handled++;
2229                 cqe = &que->cq[que->cq_cons_idx];
2230
2231                 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2232                     FCOE_CQE_CQE_TYPE_MASK;
2233
2234                 /*
2235                  * Process unsolicited CQEs directly in the interrupt handler
2236                  * sine we need the fastpath ID
2237                  */
2238                 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) {
2239                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL,
2240                            "Unsolicated CQE.\n");
2241                         qedf_process_unsol_compl(qedf, fp->sb_id, cqe);
2242                         /*
2243                          * Don't add a work list item.  Increment consumer
2244                          * consumer index and move on.
2245                          */
2246                         goto inc_idx;
2247                 }
2248
2249                 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2250                 io_req = &qedf->cmd_mgr->cmds[xid];
2251
2252                 /*
2253                  * Figure out which percpu thread we should queue this I/O
2254                  * on.
2255                  */
2256                 if (!io_req)
2257                         /* If there is not io_req assocated with this CQE
2258                          * just queue it on CPU 0
2259                          */
2260                         cpu = 0;
2261                 else {
2262                         cpu = io_req->cpu;
2263                         io_req->int_cpu = smp_processor_id();
2264                 }
2265
2266                 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC);
2267                 if (!io_work) {
2268                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate "
2269                                    "work for I/O completion.\n");
2270                         continue;
2271                 }
2272                 memset(io_work, 0, sizeof(struct qedf_io_work));
2273
2274                 INIT_WORK(&io_work->work, qedf_fp_io_handler);
2275
2276                 /* Copy contents of CQE for deferred processing */
2277                 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe));
2278
2279                 io_work->qedf = fp->qedf;
2280                 io_work->fp = NULL; /* Only used for unsolicited frames */
2281
2282                 queue_work_on(cpu, qedf_io_wq, &io_work->work);
2283
2284 inc_idx:
2285                 que->cq_cons_idx++;
2286                 if (que->cq_cons_idx == fp->cq_num_entries)
2287                         que->cq_cons_idx = 0;
2288                 new_cqes--;
2289         }
2290
2291         return true;
2292 }
2293
2294
2295 /* MSI-X fastpath handler code */
2296 static irqreturn_t qedf_msix_handler(int irq, void *dev_id)
2297 {
2298         struct qedf_fastpath *fp = dev_id;
2299
2300         if (!fp) {
2301                 QEDF_ERR(NULL, "fp is null.\n");
2302                 return IRQ_HANDLED;
2303         }
2304         if (!fp->sb_info) {
2305                 QEDF_ERR(NULL, "fp->sb_info in null.");
2306                 return IRQ_HANDLED;
2307         }
2308
2309         /*
2310          * Disable interrupts for this status block while we process new
2311          * completions
2312          */
2313         qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/);
2314
2315         while (1) {
2316                 qedf_process_completions(fp);
2317
2318                 if (qedf_fp_has_work(fp) == 0) {
2319                         /* Update the sb information */
2320                         qed_sb_update_sb_idx(fp->sb_info);
2321
2322                         /* Check for more work */
2323                         rmb();
2324
2325                         if (qedf_fp_has_work(fp) == 0) {
2326                                 /* Re-enable interrupts */
2327                                 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
2328                                 return IRQ_HANDLED;
2329                         }
2330                 }
2331         }
2332
2333         /* Do we ever want to break out of above loop? */
2334         return IRQ_HANDLED;
2335 }
2336
2337 /* simd handler for MSI/INTa */
2338 static void qedf_simd_int_handler(void *cookie)
2339 {
2340         /* Cookie is qedf_ctx struct */
2341         struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2342
2343         QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf);
2344 }
2345
2346 #define QEDF_SIMD_HANDLER_NUM           0
2347 static void qedf_sync_free_irqs(struct qedf_ctx *qedf)
2348 {
2349         int i;
2350         u16 vector_idx = 0;
2351         u32 vector;
2352
2353         if (qedf->int_info.msix_cnt) {
2354                 for (i = 0; i < qedf->int_info.used_cnt; i++) {
2355                         vector_idx = i * qedf->dev_info.common.num_hwfns +
2356                                 qed_ops->common->get_affin_hwfn_idx(qedf->cdev);
2357                         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
2358                                   "Freeing IRQ #%d vector_idx=%d.\n",
2359                                   i, vector_idx);
2360                         vector = qedf->int_info.msix[vector_idx].vector;
2361                         synchronize_irq(vector);
2362                         irq_set_affinity_hint(vector, NULL);
2363                         irq_set_affinity_notifier(vector, NULL);
2364                         free_irq(vector, &qedf->fp_array[i]);
2365                 }
2366         } else
2367                 qed_ops->common->simd_handler_clean(qedf->cdev,
2368                     QEDF_SIMD_HANDLER_NUM);
2369
2370         qedf->int_info.used_cnt = 0;
2371         qed_ops->common->set_fp_int(qedf->cdev, 0);
2372 }
2373
2374 static int qedf_request_msix_irq(struct qedf_ctx *qedf)
2375 {
2376         int i, rc, cpu;
2377         u16 vector_idx = 0;
2378         u32 vector;
2379
2380         cpu = cpumask_first(cpu_online_mask);
2381         for (i = 0; i < qedf->num_queues; i++) {
2382                 vector_idx = i * qedf->dev_info.common.num_hwfns +
2383                         qed_ops->common->get_affin_hwfn_idx(qedf->cdev);
2384                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
2385                           "Requesting IRQ #%d vector_idx=%d.\n",
2386                           i, vector_idx);
2387                 vector = qedf->int_info.msix[vector_idx].vector;
2388                 rc = request_irq(vector, qedf_msix_handler, 0, "qedf",
2389                                  &qedf->fp_array[i]);
2390
2391                 if (rc) {
2392                         QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n");
2393                         qedf_sync_free_irqs(qedf);
2394                         return rc;
2395                 }
2396
2397                 qedf->int_info.used_cnt++;
2398                 rc = irq_set_affinity_hint(vector, get_cpu_mask(cpu));
2399                 cpu = cpumask_next(cpu, cpu_online_mask);
2400         }
2401
2402         return 0;
2403 }
2404
2405 static int qedf_setup_int(struct qedf_ctx *qedf)
2406 {
2407         int rc = 0;
2408
2409         /*
2410          * Learn interrupt configuration
2411          */
2412         rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus());
2413         if (rc <= 0)
2414                 return 0;
2415
2416         rc  = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info);
2417         if (rc)
2418                 return 0;
2419
2420         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = "
2421                    "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt,
2422                    num_online_cpus());
2423
2424         if (qedf->int_info.msix_cnt)
2425                 return qedf_request_msix_irq(qedf);
2426
2427         qed_ops->common->simd_handler_config(qedf->cdev, &qedf,
2428             QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler);
2429         qedf->int_info.used_cnt = 1;
2430
2431         QEDF_ERR(&qedf->dbg_ctx,
2432                  "Cannot load driver due to a lack of MSI-X vectors.\n");
2433         return -EINVAL;
2434 }
2435
2436 /* Main function for libfc frame reception */
2437 static void qedf_recv_frame(struct qedf_ctx *qedf,
2438         struct sk_buff *skb)
2439 {
2440         u32 fr_len;
2441         struct fc_lport *lport;
2442         struct fc_frame_header *fh;
2443         struct fcoe_crc_eof crc_eof;
2444         struct fc_frame *fp;
2445         u8 *mac = NULL;
2446         u8 *dest_mac = NULL;
2447         struct fcoe_hdr *hp;
2448         struct qedf_rport *fcport;
2449         struct fc_lport *vn_port;
2450         u32 f_ctl;
2451
2452         lport = qedf->lport;
2453         if (lport == NULL || lport->state == LPORT_ST_DISABLED) {
2454                 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n");
2455                 kfree_skb(skb);
2456                 return;
2457         }
2458
2459         if (skb_is_nonlinear(skb))
2460                 skb_linearize(skb);
2461         mac = eth_hdr(skb)->h_source;
2462         dest_mac = eth_hdr(skb)->h_dest;
2463
2464         /* Pull the header */
2465         hp = (struct fcoe_hdr *)skb->data;
2466         fh = (struct fc_frame_header *) skb_transport_header(skb);
2467         skb_pull(skb, sizeof(struct fcoe_hdr));
2468         fr_len = skb->len - sizeof(struct fcoe_crc_eof);
2469
2470         fp = (struct fc_frame *)skb;
2471         fc_frame_init(fp);
2472         fr_dev(fp) = lport;
2473         fr_sof(fp) = hp->fcoe_sof;
2474         if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
2475                 QEDF_INFO(NULL, QEDF_LOG_LL2, "skb_copy_bits failed.\n");
2476                 kfree_skb(skb);
2477                 return;
2478         }
2479         fr_eof(fp) = crc_eof.fcoe_eof;
2480         fr_crc(fp) = crc_eof.fcoe_crc32;
2481         if (pskb_trim(skb, fr_len)) {
2482                 QEDF_INFO(NULL, QEDF_LOG_LL2, "pskb_trim failed.\n");
2483                 kfree_skb(skb);
2484                 return;
2485         }
2486
2487         fh = fc_frame_header_get(fp);
2488
2489         /*
2490          * Invalid frame filters.
2491          */
2492
2493         if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
2494             fh->fh_type == FC_TYPE_FCP) {
2495                 /* Drop FCP data. We dont this in L2 path */
2496                 kfree_skb(skb);
2497                 return;
2498         }
2499         if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
2500             fh->fh_type == FC_TYPE_ELS) {
2501                 switch (fc_frame_payload_op(fp)) {
2502                 case ELS_LOGO:
2503                         if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
2504                                 /* drop non-FIP LOGO */
2505                                 kfree_skb(skb);
2506                                 return;
2507                         }
2508                         break;
2509                 }
2510         }
2511
2512         if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
2513                 /* Drop incoming ABTS */
2514                 kfree_skb(skb);
2515                 return;
2516         }
2517
2518         if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
2519                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2520                     "FC frame d_id mismatch with MAC %pM.\n", dest_mac);
2521                 kfree_skb(skb);
2522                 return;
2523         }
2524
2525         if (qedf->ctlr.state) {
2526                 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) {
2527                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2528                             "Wrong source address: mac:%pM dest_addr:%pM.\n",
2529                             mac, qedf->ctlr.dest_addr);
2530                         kfree_skb(skb);
2531                         return;
2532                 }
2533         }
2534
2535         vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
2536
2537         /*
2538          * If the destination ID from the frame header does not match what we
2539          * have on record for lport and the search for a NPIV port came up
2540          * empty then this is not addressed to our port so simply drop it.
2541          */
2542         if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
2543                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2544                           "Dropping frame due to destination mismatch: lport->port_id=0x%x fh->d_id=0x%x.\n",
2545                           lport->port_id, ntoh24(fh->fh_d_id));
2546                 kfree_skb(skb);
2547                 return;
2548         }
2549
2550         f_ctl = ntoh24(fh->fh_f_ctl);
2551         if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) &&
2552             (f_ctl & FC_FC_EX_CTX)) {
2553                 /* Drop incoming ABTS response that has both SEQ/EX CTX set */
2554                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2555                           "Dropping ABTS response as both SEQ/EX CTX set.\n");
2556                 kfree_skb(skb);
2557                 return;
2558         }
2559
2560         /*
2561          * If a connection is uploading, drop incoming FCoE frames as there
2562          * is a small window where we could try to return a frame while libfc
2563          * is trying to clean things up.
2564          */
2565
2566         /* Get fcport associated with d_id if it exists */
2567         fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
2568
2569         if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
2570             &fcport->flags)) {
2571                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2572                     "Connection uploading, dropping fp=%p.\n", fp);
2573                 kfree_skb(skb);
2574                 return;
2575         }
2576
2577         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: "
2578             "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp,
2579             ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl,
2580             fh->fh_type);
2581         if (qedf_dump_frames)
2582                 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
2583                     1, skb->data, skb->len, false);
2584         fc_exch_recv(lport, fp);
2585 }
2586
2587 static void qedf_ll2_process_skb(struct work_struct *work)
2588 {
2589         struct qedf_skb_work *skb_work =
2590             container_of(work, struct qedf_skb_work, work);
2591         struct qedf_ctx *qedf = skb_work->qedf;
2592         struct sk_buff *skb = skb_work->skb;
2593         struct ethhdr *eh;
2594
2595         if (!qedf) {
2596                 QEDF_ERR(NULL, "qedf is NULL\n");
2597                 goto err_out;
2598         }
2599
2600         eh = (struct ethhdr *)skb->data;
2601
2602         /* Undo VLAN encapsulation */
2603         if (eh->h_proto == htons(ETH_P_8021Q)) {
2604                 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
2605                 eh = skb_pull(skb, VLAN_HLEN);
2606                 skb_reset_mac_header(skb);
2607         }
2608
2609         /*
2610          * Process either a FIP frame or FCoE frame based on the
2611          * protocol value.  If it's not either just drop the
2612          * frame.
2613          */
2614         if (eh->h_proto == htons(ETH_P_FIP)) {
2615                 qedf_fip_recv(qedf, skb);
2616                 goto out;
2617         } else if (eh->h_proto == htons(ETH_P_FCOE)) {
2618                 __skb_pull(skb, ETH_HLEN);
2619                 qedf_recv_frame(qedf, skb);
2620                 goto out;
2621         } else
2622                 goto err_out;
2623
2624 err_out:
2625         kfree_skb(skb);
2626 out:
2627         kfree(skb_work);
2628         return;
2629 }
2630
2631 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb,
2632         u32 arg1, u32 arg2)
2633 {
2634         struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2635         struct qedf_skb_work *skb_work;
2636
2637         if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
2638                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2639                           "Dropping frame as link state is down.\n");
2640                 kfree_skb(skb);
2641                 return 0;
2642         }
2643
2644         skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC);
2645         if (!skb_work) {
2646                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so "
2647                            "dropping frame.\n");
2648                 kfree_skb(skb);
2649                 return 0;
2650         }
2651
2652         INIT_WORK(&skb_work->work, qedf_ll2_process_skb);
2653         skb_work->skb = skb;
2654         skb_work->qedf = qedf;
2655         queue_work(qedf->ll2_recv_wq, &skb_work->work);
2656
2657         return 0;
2658 }
2659
2660 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = {
2661         .rx_cb = qedf_ll2_rx,
2662         .tx_cb = NULL,
2663 };
2664
2665 /* Main thread to process I/O completions */
2666 void qedf_fp_io_handler(struct work_struct *work)
2667 {
2668         struct qedf_io_work *io_work =
2669             container_of(work, struct qedf_io_work, work);
2670         u32 comp_type;
2671
2672         /*
2673          * Deferred part of unsolicited CQE sends
2674          * frame to libfc.
2675          */
2676         comp_type = (io_work->cqe.cqe_data >>
2677             FCOE_CQE_CQE_TYPE_SHIFT) &
2678             FCOE_CQE_CQE_TYPE_MASK;
2679         if (comp_type == FCOE_UNSOLIC_CQE_TYPE &&
2680             io_work->fp)
2681                 fc_exch_recv(io_work->qedf->lport, io_work->fp);
2682         else
2683                 qedf_process_cqe(io_work->qedf, &io_work->cqe);
2684
2685         kfree(io_work);
2686 }
2687
2688 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf,
2689         struct qed_sb_info *sb_info, u16 sb_id)
2690 {
2691         struct status_block_e4 *sb_virt;
2692         dma_addr_t sb_phys;
2693         int ret;
2694
2695         sb_virt = dma_alloc_coherent(&qedf->pdev->dev,
2696             sizeof(struct status_block_e4), &sb_phys, GFP_KERNEL);
2697
2698         if (!sb_virt) {
2699                 QEDF_ERR(&qedf->dbg_ctx,
2700                          "Status block allocation failed for id = %d.\n",
2701                          sb_id);
2702                 return -ENOMEM;
2703         }
2704
2705         ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys,
2706             sb_id, QED_SB_TYPE_STORAGE);
2707
2708         if (ret) {
2709                 QEDF_ERR(&qedf->dbg_ctx,
2710                          "Status block initialization failed (0x%x) for id = %d.\n",
2711                          ret, sb_id);
2712                 return ret;
2713         }
2714
2715         return 0;
2716 }
2717
2718 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info)
2719 {
2720         if (sb_info->sb_virt)
2721                 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt),
2722                     (void *)sb_info->sb_virt, sb_info->sb_phys);
2723 }
2724
2725 static void qedf_destroy_sb(struct qedf_ctx *qedf)
2726 {
2727         int id;
2728         struct qedf_fastpath *fp = NULL;
2729
2730         for (id = 0; id < qedf->num_queues; id++) {
2731                 fp = &(qedf->fp_array[id]);
2732                 if (fp->sb_id == QEDF_SB_ID_NULL)
2733                         break;
2734                 qedf_free_sb(qedf, fp->sb_info);
2735                 kfree(fp->sb_info);
2736         }
2737         kfree(qedf->fp_array);
2738 }
2739
2740 static int qedf_prepare_sb(struct qedf_ctx *qedf)
2741 {
2742         int id;
2743         struct qedf_fastpath *fp;
2744         int ret;
2745
2746         qedf->fp_array =
2747             kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath),
2748                 GFP_KERNEL);
2749
2750         if (!qedf->fp_array) {
2751                 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation "
2752                           "failed.\n");
2753                 return -ENOMEM;
2754         }
2755
2756         for (id = 0; id < qedf->num_queues; id++) {
2757                 fp = &(qedf->fp_array[id]);
2758                 fp->sb_id = QEDF_SB_ID_NULL;
2759                 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL);
2760                 if (!fp->sb_info) {
2761                         QEDF_ERR(&(qedf->dbg_ctx), "SB info struct "
2762                                   "allocation failed.\n");
2763                         goto err;
2764                 }
2765                 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id);
2766                 if (ret) {
2767                         QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and "
2768                                   "initialization failed.\n");
2769                         goto err;
2770                 }
2771                 fp->sb_id = id;
2772                 fp->qedf = qedf;
2773                 fp->cq_num_entries =
2774                     qedf->global_queues[id]->cq_mem_size /
2775                     sizeof(struct fcoe_cqe);
2776         }
2777 err:
2778         return 0;
2779 }
2780
2781 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe)
2782 {
2783         u16 xid;
2784         struct qedf_ioreq *io_req;
2785         struct qedf_rport *fcport;
2786         u32 comp_type;
2787
2788         comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2789             FCOE_CQE_CQE_TYPE_MASK;
2790
2791         xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2792         io_req = &qedf->cmd_mgr->cmds[xid];
2793
2794         /* Completion not for a valid I/O anymore so just return */
2795         if (!io_req) {
2796                 QEDF_ERR(&qedf->dbg_ctx,
2797                          "io_req is NULL for xid=0x%x.\n", xid);
2798                 return;
2799         }
2800
2801         fcport = io_req->fcport;
2802
2803         if (fcport == NULL) {
2804                 QEDF_ERR(&qedf->dbg_ctx,
2805                          "fcport is NULL for xid=0x%x io_req=%p.\n",
2806                          xid, io_req);
2807                 return;
2808         }
2809
2810         /*
2811          * Check that fcport is offloaded.  If it isn't then the spinlock
2812          * isn't valid and shouldn't be taken. We should just return.
2813          */
2814         if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
2815                 QEDF_ERR(&qedf->dbg_ctx,
2816                          "Session not offloaded yet, fcport = %p.\n", fcport);
2817                 return;
2818         }
2819
2820
2821         switch (comp_type) {
2822         case FCOE_GOOD_COMPLETION_CQE_TYPE:
2823                 atomic_inc(&fcport->free_sqes);
2824                 switch (io_req->cmd_type) {
2825                 case QEDF_SCSI_CMD:
2826                         qedf_scsi_completion(qedf, cqe, io_req);
2827                         break;
2828                 case QEDF_ELS:
2829                         qedf_process_els_compl(qedf, cqe, io_req);
2830                         break;
2831                 case QEDF_TASK_MGMT_CMD:
2832                         qedf_process_tmf_compl(qedf, cqe, io_req);
2833                         break;
2834                 case QEDF_SEQ_CLEANUP:
2835                         qedf_process_seq_cleanup_compl(qedf, cqe, io_req);
2836                         break;
2837                 }
2838                 break;
2839         case FCOE_ERROR_DETECTION_CQE_TYPE:
2840                 atomic_inc(&fcport->free_sqes);
2841                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2842                     "Error detect CQE.\n");
2843                 qedf_process_error_detect(qedf, cqe, io_req);
2844                 break;
2845         case FCOE_EXCH_CLEANUP_CQE_TYPE:
2846                 atomic_inc(&fcport->free_sqes);
2847                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2848                     "Cleanup CQE.\n");
2849                 qedf_process_cleanup_compl(qedf, cqe, io_req);
2850                 break;
2851         case FCOE_ABTS_CQE_TYPE:
2852                 atomic_inc(&fcport->free_sqes);
2853                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2854                     "Abort CQE.\n");
2855                 qedf_process_abts_compl(qedf, cqe, io_req);
2856                 break;
2857         case FCOE_DUMMY_CQE_TYPE:
2858                 atomic_inc(&fcport->free_sqes);
2859                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2860                     "Dummy CQE.\n");
2861                 break;
2862         case FCOE_LOCAL_COMP_CQE_TYPE:
2863                 atomic_inc(&fcport->free_sqes);
2864                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2865                     "Local completion CQE.\n");
2866                 break;
2867         case FCOE_WARNING_CQE_TYPE:
2868                 atomic_inc(&fcport->free_sqes);
2869                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2870                     "Warning CQE.\n");
2871                 qedf_process_warning_compl(qedf, cqe, io_req);
2872                 break;
2873         case MAX_FCOE_CQE_TYPE:
2874                 atomic_inc(&fcport->free_sqes);
2875                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2876                     "Max FCoE CQE.\n");
2877                 break;
2878         default:
2879                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2880                     "Default CQE.\n");
2881                 break;
2882         }
2883 }
2884
2885 static void qedf_free_bdq(struct qedf_ctx *qedf)
2886 {
2887         int i;
2888
2889         if (qedf->bdq_pbl_list)
2890                 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE,
2891                     qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma);
2892
2893         if (qedf->bdq_pbl)
2894                 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size,
2895                     qedf->bdq_pbl, qedf->bdq_pbl_dma);
2896
2897         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2898                 if (qedf->bdq[i].buf_addr) {
2899                         dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE,
2900                             qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma);
2901                 }
2902         }
2903 }
2904
2905 static void qedf_free_global_queues(struct qedf_ctx *qedf)
2906 {
2907         int i;
2908         struct global_queue **gl = qedf->global_queues;
2909
2910         for (i = 0; i < qedf->num_queues; i++) {
2911                 if (!gl[i])
2912                         continue;
2913
2914                 if (gl[i]->cq)
2915                         dma_free_coherent(&qedf->pdev->dev,
2916                             gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma);
2917                 if (gl[i]->cq_pbl)
2918                         dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size,
2919                             gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
2920
2921                 kfree(gl[i]);
2922         }
2923
2924         qedf_free_bdq(qedf);
2925 }
2926
2927 static int qedf_alloc_bdq(struct qedf_ctx *qedf)
2928 {
2929         int i;
2930         struct scsi_bd *pbl;
2931         u64 *list;
2932         dma_addr_t page;
2933
2934         /* Alloc dma memory for BDQ buffers */
2935         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2936                 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev,
2937                     QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL);
2938                 if (!qedf->bdq[i].buf_addr) {
2939                         QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ "
2940                             "buffer %d.\n", i);
2941                         return -ENOMEM;
2942                 }
2943         }
2944
2945         /* Alloc dma memory for BDQ page buffer list */
2946         qedf->bdq_pbl_mem_size =
2947             QEDF_BDQ_SIZE * sizeof(struct scsi_bd);
2948         qedf->bdq_pbl_mem_size =
2949             ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE);
2950
2951         qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
2952             qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL);
2953         if (!qedf->bdq_pbl) {
2954                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n");
2955                 return -ENOMEM;
2956         }
2957
2958         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2959                   "BDQ PBL addr=0x%p dma=%pad\n",
2960                   qedf->bdq_pbl, &qedf->bdq_pbl_dma);
2961
2962         /*
2963          * Populate BDQ PBL with physical and virtual address of individual
2964          * BDQ buffers
2965          */
2966         pbl = (struct scsi_bd *)qedf->bdq_pbl;
2967         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2968                 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma));
2969                 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma));
2970                 pbl->opaque.fcoe_opaque.hi = 0;
2971                 /* Opaque lo data is an index into the BDQ array */
2972                 pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i);
2973                 pbl++;
2974         }
2975
2976         /* Allocate list of PBL pages */
2977         qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev,
2978                                                 QEDF_PAGE_SIZE,
2979                                                 &qedf->bdq_pbl_list_dma,
2980                                                 GFP_KERNEL);
2981         if (!qedf->bdq_pbl_list) {
2982                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n");
2983                 return -ENOMEM;
2984         }
2985
2986         /*
2987          * Now populate PBL list with pages that contain pointers to the
2988          * individual buffers.
2989          */
2990         qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size /
2991             QEDF_PAGE_SIZE;
2992         list = (u64 *)qedf->bdq_pbl_list;
2993         page = qedf->bdq_pbl_list_dma;
2994         for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) {
2995                 *list = qedf->bdq_pbl_dma;
2996                 list++;
2997                 page += QEDF_PAGE_SIZE;
2998         }
2999
3000         return 0;
3001 }
3002
3003 static int qedf_alloc_global_queues(struct qedf_ctx *qedf)
3004 {
3005         u32 *list;
3006         int i;
3007         int status = 0, rc;
3008         u32 *pbl;
3009         dma_addr_t page;
3010         int num_pages;
3011
3012         /* Allocate and map CQs, RQs */
3013         /*
3014          * Number of global queues (CQ / RQ). This should
3015          * be <= number of available MSIX vectors for the PF
3016          */
3017         if (!qedf->num_queues) {
3018                 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n");
3019                 return 1;
3020         }
3021
3022         /*
3023          * Make sure we allocated the PBL that will contain the physical
3024          * addresses of our queues
3025          */
3026         if (!qedf->p_cpuq) {
3027                 status = 1;
3028                 QEDF_ERR(&qedf->dbg_ctx, "p_cpuq is NULL.\n");
3029                 goto mem_alloc_failure;
3030         }
3031
3032         qedf->global_queues = kzalloc((sizeof(struct global_queue *)
3033             * qedf->num_queues), GFP_KERNEL);
3034         if (!qedf->global_queues) {
3035                 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global "
3036                           "queues array ptr memory\n");
3037                 return -ENOMEM;
3038         }
3039         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3040                    "qedf->global_queues=%p.\n", qedf->global_queues);
3041
3042         /* Allocate DMA coherent buffers for BDQ */
3043         rc = qedf_alloc_bdq(qedf);
3044         if (rc) {
3045                 QEDF_ERR(&qedf->dbg_ctx, "Unable to allocate bdq.\n");
3046                 goto mem_alloc_failure;
3047         }
3048
3049         /* Allocate a CQ and an associated PBL for each MSI-X vector */
3050         for (i = 0; i < qedf->num_queues; i++) {
3051                 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue),
3052                     GFP_KERNEL);
3053                 if (!qedf->global_queues[i]) {
3054                         QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate "
3055                                    "global queue %d.\n", i);
3056                         status = -ENOMEM;
3057                         goto mem_alloc_failure;
3058                 }
3059
3060                 qedf->global_queues[i]->cq_mem_size =
3061                     FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
3062                 qedf->global_queues[i]->cq_mem_size =
3063                     ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE);
3064
3065                 qedf->global_queues[i]->cq_pbl_size =
3066                     (qedf->global_queues[i]->cq_mem_size /
3067                     PAGE_SIZE) * sizeof(void *);
3068                 qedf->global_queues[i]->cq_pbl_size =
3069                     ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE);
3070
3071                 qedf->global_queues[i]->cq =
3072                     dma_alloc_coherent(&qedf->pdev->dev,
3073                                        qedf->global_queues[i]->cq_mem_size,
3074                                        &qedf->global_queues[i]->cq_dma,
3075                                        GFP_KERNEL);
3076
3077                 if (!qedf->global_queues[i]->cq) {
3078                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n");
3079                         status = -ENOMEM;
3080                         goto mem_alloc_failure;
3081                 }
3082
3083                 qedf->global_queues[i]->cq_pbl =
3084                     dma_alloc_coherent(&qedf->pdev->dev,
3085                                        qedf->global_queues[i]->cq_pbl_size,
3086                                        &qedf->global_queues[i]->cq_pbl_dma,
3087                                        GFP_KERNEL);
3088
3089                 if (!qedf->global_queues[i]->cq_pbl) {
3090                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n");
3091                         status = -ENOMEM;
3092                         goto mem_alloc_failure;
3093                 }
3094
3095                 /* Create PBL */
3096                 num_pages = qedf->global_queues[i]->cq_mem_size /
3097                     QEDF_PAGE_SIZE;
3098                 page = qedf->global_queues[i]->cq_dma;
3099                 pbl = (u32 *)qedf->global_queues[i]->cq_pbl;
3100
3101                 while (num_pages--) {
3102                         *pbl = U64_LO(page);
3103                         pbl++;
3104                         *pbl = U64_HI(page);
3105                         pbl++;
3106                         page += QEDF_PAGE_SIZE;
3107                 }
3108                 /* Set the initial consumer index for cq */
3109                 qedf->global_queues[i]->cq_cons_idx = 0;
3110         }
3111
3112         list = (u32 *)qedf->p_cpuq;
3113
3114         /*
3115          * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
3116          * CQ#1 PBL pointer, RQ#1 PBL pointer, etc.  Each PBL pointer points
3117          * to the physical address which contains an array of pointers to
3118          * the physical addresses of the specific queue pages.
3119          */
3120         for (i = 0; i < qedf->num_queues; i++) {
3121                 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma);
3122                 list++;
3123                 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma);
3124                 list++;
3125                 *list = U64_LO(0);
3126                 list++;
3127                 *list = U64_HI(0);
3128                 list++;
3129         }
3130
3131         return 0;
3132
3133 mem_alloc_failure:
3134         qedf_free_global_queues(qedf);
3135         return status;
3136 }
3137
3138 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf)
3139 {
3140         u8 sq_num_pbl_pages;
3141         u32 sq_mem_size;
3142         u32 cq_mem_size;
3143         u32 cq_num_entries;
3144         int rval;
3145
3146         /*
3147          * The number of completion queues/fastpath interrupts/status blocks
3148          * we allocation is the minimum off:
3149          *
3150          * Number of CPUs
3151          * Number allocated by qed for our PCI function
3152          */
3153         qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf);
3154
3155         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n",
3156                    qedf->num_queues);
3157
3158         qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev,
3159             qedf->num_queues * sizeof(struct qedf_glbl_q_params),
3160             &qedf->hw_p_cpuq, GFP_KERNEL);
3161
3162         if (!qedf->p_cpuq) {
3163                 QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n");
3164                 return 1;
3165         }
3166
3167         rval = qedf_alloc_global_queues(qedf);
3168         if (rval) {
3169                 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation "
3170                           "failed.\n");
3171                 return 1;
3172         }
3173
3174         /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */
3175         sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
3176         sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE);
3177         sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE);
3178
3179         /* Calculate CQ num entries */
3180         cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
3181         cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE);
3182         cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe);
3183
3184         memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params));
3185
3186         /* Setup the value for fcoe PF */
3187         qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS;
3188         qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS;
3189         qedf->pf_params.fcoe_pf_params.glbl_q_params_addr =
3190             (u64)qedf->hw_p_cpuq;
3191         qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages;
3192
3193         qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0;
3194
3195         qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries;
3196         qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues;
3197
3198         /* log_page_size: 12 for 4KB pages */
3199         qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE);
3200
3201         qedf->pf_params.fcoe_pf_params.mtu = 9000;
3202         qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI;
3203         qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI;
3204
3205         /* BDQ address and size */
3206         qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] =
3207             qedf->bdq_pbl_list_dma;
3208         qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] =
3209             qedf->bdq_pbl_list_num_entries;
3210         qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE;
3211
3212         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3213             "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n",
3214             qedf->bdq_pbl_list,
3215             qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0],
3216             qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]);
3217
3218         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3219             "cq_num_entries=%d.\n",
3220             qedf->pf_params.fcoe_pf_params.cq_num_entries);
3221
3222         return 0;
3223 }
3224
3225 /* Free DMA coherent memory for array of queue pointers we pass to qed */
3226 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf)
3227 {
3228         size_t size = 0;
3229
3230         if (qedf->p_cpuq) {
3231                 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params);
3232                 dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq,
3233                     qedf->hw_p_cpuq);
3234         }
3235
3236         qedf_free_global_queues(qedf);
3237
3238         kfree(qedf->global_queues);
3239 }
3240
3241 /*
3242  * PCI driver functions
3243  */
3244
3245 static const struct pci_device_id qedf_pci_tbl[] = {
3246         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) },
3247         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) },
3248         {0}
3249 };
3250 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl);
3251
3252 static struct pci_driver qedf_pci_driver = {
3253         .name = QEDF_MODULE_NAME,
3254         .id_table = qedf_pci_tbl,
3255         .probe = qedf_probe,
3256         .remove = qedf_remove,
3257         .shutdown = qedf_shutdown,
3258 };
3259
3260 static int __qedf_probe(struct pci_dev *pdev, int mode)
3261 {
3262         int rc = -EINVAL;
3263         struct fc_lport *lport;
3264         struct qedf_ctx *qedf = NULL;
3265         struct Scsi_Host *host;
3266         bool is_vf = false;
3267         struct qed_ll2_params params;
3268         char host_buf[20];
3269         struct qed_link_params link_params;
3270         int status;
3271         void *task_start, *task_end;
3272         struct qed_slowpath_params slowpath_params;
3273         struct qed_probe_params qed_params;
3274         u16 retry_cnt = 10;
3275
3276         /*
3277          * When doing error recovery we didn't reap the lport so don't try
3278          * to reallocate it.
3279          */
3280 retry_probe:
3281         if (mode == QEDF_MODE_RECOVERY)
3282                 msleep(2000);
3283
3284         if (mode != QEDF_MODE_RECOVERY) {
3285                 lport = libfc_host_alloc(&qedf_host_template,
3286                     sizeof(struct qedf_ctx));
3287
3288                 if (!lport) {
3289                         QEDF_ERR(NULL, "Could not allocate lport.\n");
3290                         rc = -ENOMEM;
3291                         goto err0;
3292                 }
3293
3294                 fc_disc_init(lport);
3295
3296                 /* Initialize qedf_ctx */
3297                 qedf = lport_priv(lport);
3298                 set_bit(QEDF_PROBING, &qedf->flags);
3299                 qedf->lport = lport;
3300                 qedf->ctlr.lp = lport;
3301                 qedf->pdev = pdev;
3302                 qedf->dbg_ctx.pdev = pdev;
3303                 qedf->dbg_ctx.host_no = lport->host->host_no;
3304                 spin_lock_init(&qedf->hba_lock);
3305                 INIT_LIST_HEAD(&qedf->fcports);
3306                 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1;
3307                 atomic_set(&qedf->num_offloads, 0);
3308                 qedf->stop_io_on_error = false;
3309                 pci_set_drvdata(pdev, qedf);
3310                 init_completion(&qedf->fipvlan_compl);
3311                 mutex_init(&qedf->stats_mutex);
3312                 mutex_init(&qedf->flush_mutex);
3313                 qedf->flogi_pending = 0;
3314
3315                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO,
3316                    "QLogic FastLinQ FCoE Module qedf %s, "
3317                    "FW %d.%d.%d.%d\n", QEDF_VERSION,
3318                    FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
3319                    FW_ENGINEERING_VERSION);
3320         } else {
3321                 /* Init pointers during recovery */
3322                 qedf = pci_get_drvdata(pdev);
3323                 set_bit(QEDF_PROBING, &qedf->flags);
3324                 lport = qedf->lport;
3325         }
3326
3327         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe started.\n");
3328
3329         host = lport->host;
3330
3331         /* Allocate mempool for qedf_io_work structs */
3332         qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN,
3333             qedf_io_work_cache);
3334         if (qedf->io_mempool == NULL) {
3335                 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n");
3336                 goto err1;
3337         }
3338         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n",
3339             qedf->io_mempool);
3340
3341         sprintf(host_buf, "qedf_%u_link",
3342             qedf->lport->host->host_no);
3343         qedf->link_update_wq = create_workqueue(host_buf);
3344         INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update);
3345         INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery);
3346         INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump);
3347         INIT_DELAYED_WORK(&qedf->stag_work, qedf_stag_change_work);
3348         qedf->fipvlan_retries = qedf_fipvlan_retries;
3349         /* Set a default prio in case DCBX doesn't converge */
3350         if (qedf_default_prio > -1) {
3351                 /*
3352                  * This is the case where we pass a modparam in so we want to
3353                  * honor it even if dcbx doesn't converge.
3354                  */
3355                 qedf->prio = qedf_default_prio;
3356         } else
3357                 qedf->prio = QEDF_DEFAULT_PRIO;
3358
3359         /*
3360          * Common probe. Takes care of basic hardware init and pci_*
3361          * functions.
3362          */
3363         memset(&qed_params, 0, sizeof(qed_params));
3364         qed_params.protocol = QED_PROTOCOL_FCOE;
3365         qed_params.dp_module = qedf_dp_module;
3366         qed_params.dp_level = qedf_dp_level;
3367         qed_params.is_vf = is_vf;
3368         qedf->cdev = qed_ops->common->probe(pdev, &qed_params);
3369         if (!qedf->cdev) {
3370                 if ((mode == QEDF_MODE_RECOVERY) && retry_cnt) {
3371                         QEDF_ERR(&qedf->dbg_ctx,
3372                                 "Retry %d initialize hardware\n", retry_cnt);
3373                         retry_cnt--;
3374                         goto retry_probe;
3375                 }
3376                 QEDF_ERR(&qedf->dbg_ctx, "common probe failed.\n");
3377                 rc = -ENODEV;
3378                 goto err1;
3379         }
3380
3381         /* Learn information crucial for qedf to progress */
3382         rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
3383         if (rc) {
3384                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n");
3385                 goto err1;
3386         }
3387
3388         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
3389                   "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
3390                   qedf->dev_info.common.num_hwfns,
3391                   qed_ops->common->get_affin_hwfn_idx(qedf->cdev));
3392
3393         /* queue allocation code should come here
3394          * order should be
3395          *      slowpath_start
3396          *      status block allocation
3397          *      interrupt registration (to get min number of queues)
3398          *      set_fcoe_pf_param
3399          *      qed_sp_fcoe_func_start
3400          */
3401         rc = qedf_set_fcoe_pf_param(qedf);
3402         if (rc) {
3403                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n");
3404                 goto err2;
3405         }
3406         qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3407
3408         /* Learn information crucial for qedf to progress */
3409         rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
3410         if (rc) {
3411                 QEDF_ERR(&qedf->dbg_ctx, "Failed to fill dev info.\n");
3412                 goto err2;
3413         }
3414
3415         if (mode != QEDF_MODE_RECOVERY) {
3416                 qedf->devlink = qed_ops->common->devlink_register(qedf->cdev);
3417                 if (IS_ERR(qedf->devlink)) {
3418                         QEDF_ERR(&qedf->dbg_ctx, "Cannot register devlink\n");
3419                         qedf->devlink = NULL;
3420                 }
3421         }
3422
3423         /* Record BDQ producer doorbell addresses */
3424         qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr;
3425         qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr;
3426         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3427             "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod,
3428             qedf->bdq_secondary_prod);
3429
3430         qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf);
3431
3432         rc = qedf_prepare_sb(qedf);
3433         if (rc) {
3434
3435                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3436                 goto err2;
3437         }
3438
3439         /* Start the Slowpath-process */
3440         slowpath_params.int_mode = QED_INT_MODE_MSIX;
3441         slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER;
3442         slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER;
3443         slowpath_params.drv_rev = QEDF_DRIVER_REV_VER;
3444         slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER;
3445         strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE);
3446         rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params);
3447         if (rc) {
3448                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3449                 goto err2;
3450         }
3451
3452         /*
3453          * update_pf_params needs to be called before and after slowpath
3454          * start
3455          */
3456         qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3457
3458         /* Setup interrupts */
3459         rc = qedf_setup_int(qedf);
3460         if (rc) {
3461                 QEDF_ERR(&qedf->dbg_ctx, "Setup interrupts failed.\n");
3462                 goto err3;
3463         }
3464
3465         rc = qed_ops->start(qedf->cdev, &qedf->tasks);
3466         if (rc) {
3467                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n");
3468                 goto err4;
3469         }
3470         task_start = qedf_get_task_mem(&qedf->tasks, 0);
3471         task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1);
3472         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, "
3473                    "end=%p block_size=%u.\n", task_start, task_end,
3474                    qedf->tasks.size);
3475
3476         /*
3477          * We need to write the number of BDs in the BDQ we've preallocated so
3478          * the f/w will do a prefetch and we'll get an unsolicited CQE when a
3479          * packet arrives.
3480          */
3481         qedf->bdq_prod_idx = QEDF_BDQ_SIZE;
3482         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3483             "Writing %d to primary and secondary BDQ doorbell registers.\n",
3484             qedf->bdq_prod_idx);
3485         writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod);
3486         readw(qedf->bdq_primary_prod);
3487         writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod);
3488         readw(qedf->bdq_secondary_prod);
3489
3490         qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3491
3492         /* Now that the dev_info struct has been filled in set the MAC
3493          * address
3494          */
3495         ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac);
3496         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n",
3497                    qedf->mac);
3498
3499         /*
3500          * Set the WWNN and WWPN in the following way:
3501          *
3502          * If the info we get from qed is non-zero then use that to set the
3503          * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based
3504          * on the MAC address.
3505          */
3506         if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) {
3507                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3508                     "Setting WWPN and WWNN from qed dev_info.\n");
3509                 qedf->wwnn = qedf->dev_info.wwnn;
3510                 qedf->wwpn = qedf->dev_info.wwpn;
3511         } else {
3512                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3513                     "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n");
3514                 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0);
3515                 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0);
3516         }
3517         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,  "WWNN=%016llx "
3518                    "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn);
3519
3520         sprintf(host_buf, "host_%d", host->host_no);
3521         qed_ops->common->set_name(qedf->cdev, host_buf);
3522
3523         /* Allocate cmd mgr */
3524         qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf);
3525         if (!qedf->cmd_mgr) {
3526                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n");
3527                 rc = -ENOMEM;
3528                 goto err5;
3529         }
3530
3531         if (mode != QEDF_MODE_RECOVERY) {
3532                 host->transportt = qedf_fc_transport_template;
3533                 host->max_lun = qedf_max_lun;
3534                 host->max_cmd_len = QEDF_MAX_CDB_LEN;
3535                 host->max_id = QEDF_MAX_SESSIONS;
3536                 host->can_queue = FCOE_PARAMS_NUM_TASKS;
3537                 rc = scsi_add_host(host, &pdev->dev);
3538                 if (rc) {
3539                         QEDF_WARN(&qedf->dbg_ctx,
3540                                   "Error adding Scsi_Host rc=0x%x.\n", rc);
3541                         goto err6;
3542                 }
3543         }
3544
3545         memset(&params, 0, sizeof(params));
3546         params.mtu = QEDF_LL2_BUF_SIZE;
3547         ether_addr_copy(params.ll2_mac_address, qedf->mac);
3548
3549         /* Start LL2 processing thread */
3550         snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no);
3551         qedf->ll2_recv_wq =
3552                 create_workqueue(host_buf);
3553         if (!qedf->ll2_recv_wq) {
3554                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n");
3555                 rc = -ENOMEM;
3556                 goto err7;
3557         }
3558
3559 #ifdef CONFIG_DEBUG_FS
3560         qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops,
3561                             qedf_dbg_fops);
3562 #endif
3563
3564         /* Start LL2 */
3565         qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf);
3566         rc = qed_ops->ll2->start(qedf->cdev, &params);
3567         if (rc) {
3568                 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n");
3569                 goto err7;
3570         }
3571         set_bit(QEDF_LL2_STARTED, &qedf->flags);
3572
3573         /* Set initial FIP/FCoE VLAN to NULL */
3574         qedf->vlan_id = 0;
3575
3576         /*
3577          * No need to setup fcoe_ctlr or fc_lport objects during recovery since
3578          * they were not reaped during the unload process.
3579          */
3580         if (mode != QEDF_MODE_RECOVERY) {
3581                 /* Setup imbedded fcoe controller */
3582                 qedf_fcoe_ctlr_setup(qedf);
3583
3584                 /* Setup lport */
3585                 rc = qedf_lport_setup(qedf);
3586                 if (rc) {
3587                         QEDF_ERR(&(qedf->dbg_ctx),
3588                             "qedf_lport_setup failed.\n");
3589                         goto err7;
3590                 }
3591         }
3592
3593         sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no);
3594         qedf->timer_work_queue =
3595                 create_workqueue(host_buf);
3596         if (!qedf->timer_work_queue) {
3597                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer "
3598                           "workqueue.\n");
3599                 rc = -ENOMEM;
3600                 goto err7;
3601         }
3602
3603         /* DPC workqueue is not reaped during recovery unload */
3604         if (mode != QEDF_MODE_RECOVERY) {
3605                 sprintf(host_buf, "qedf_%u_dpc",
3606                     qedf->lport->host->host_no);
3607                 qedf->dpc_wq = create_workqueue(host_buf);
3608         }
3609         INIT_DELAYED_WORK(&qedf->recovery_work, qedf_recovery_handler);
3610
3611         /*
3612          * GRC dump and sysfs parameters are not reaped during the recovery
3613          * unload process.
3614          */
3615         if (mode != QEDF_MODE_RECOVERY) {
3616                 qedf->grcdump_size =
3617                     qed_ops->common->dbg_all_data_size(qedf->cdev);
3618                 if (qedf->grcdump_size) {
3619                         rc = qedf_alloc_grc_dump_buf(&qedf->grcdump,
3620                             qedf->grcdump_size);
3621                         if (rc) {
3622                                 QEDF_ERR(&(qedf->dbg_ctx),
3623                                     "GRC Dump buffer alloc failed.\n");
3624                                 qedf->grcdump = NULL;
3625                         }
3626
3627                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3628                             "grcdump: addr=%p, size=%u.\n",
3629                             qedf->grcdump, qedf->grcdump_size);
3630                 }
3631                 qedf_create_sysfs_ctx_attr(qedf);
3632
3633                 /* Initialize I/O tracing for this adapter */
3634                 spin_lock_init(&qedf->io_trace_lock);
3635                 qedf->io_trace_idx = 0;
3636         }
3637
3638         init_completion(&qedf->flogi_compl);
3639
3640         status = qed_ops->common->update_drv_state(qedf->cdev, true);
3641         if (status)
3642                 QEDF_ERR(&(qedf->dbg_ctx),
3643                         "Failed to send drv state to MFW.\n");
3644
3645         memset(&link_params, 0, sizeof(struct qed_link_params));
3646         link_params.link_up = true;
3647         status = qed_ops->common->set_link(qedf->cdev, &link_params);
3648         if (status)
3649                 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n");
3650
3651         /* Start/restart discovery */
3652         if (mode == QEDF_MODE_RECOVERY)
3653                 fcoe_ctlr_link_up(&qedf->ctlr);
3654         else
3655                 fc_fabric_login(lport);
3656
3657         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe done.\n");
3658
3659         clear_bit(QEDF_PROBING, &qedf->flags);
3660
3661         /* All good */
3662         return 0;
3663
3664 err7:
3665         if (qedf->ll2_recv_wq)
3666                 destroy_workqueue(qedf->ll2_recv_wq);
3667         fc_remove_host(qedf->lport->host);
3668         scsi_remove_host(qedf->lport->host);
3669 #ifdef CONFIG_DEBUG_FS
3670         qedf_dbg_host_exit(&(qedf->dbg_ctx));
3671 #endif
3672 err6:
3673         qedf_cmd_mgr_free(qedf->cmd_mgr);
3674 err5:
3675         qed_ops->stop(qedf->cdev);
3676 err4:
3677         qedf_free_fcoe_pf_param(qedf);
3678         qedf_sync_free_irqs(qedf);
3679 err3:
3680         qed_ops->common->slowpath_stop(qedf->cdev);
3681 err2:
3682         qed_ops->common->remove(qedf->cdev);
3683 err1:
3684         scsi_host_put(lport->host);
3685 err0:
3686         if (qedf) {
3687                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe done.\n");
3688
3689                 clear_bit(QEDF_PROBING, &qedf->flags);
3690         }
3691         return rc;
3692 }
3693
3694 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
3695 {
3696         return __qedf_probe(pdev, QEDF_MODE_NORMAL);
3697 }
3698
3699 static void __qedf_remove(struct pci_dev *pdev, int mode)
3700 {
3701         struct qedf_ctx *qedf;
3702         int rc;
3703
3704         if (!pdev) {
3705                 QEDF_ERR(NULL, "pdev is NULL.\n");
3706                 return;
3707         }
3708
3709         qedf = pci_get_drvdata(pdev);
3710
3711         /*
3712          * Prevent race where we're in board disable work and then try to
3713          * rmmod the module.
3714          */
3715         if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
3716                 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n");
3717                 return;
3718         }
3719
3720         if (mode != QEDF_MODE_RECOVERY)
3721                 set_bit(QEDF_UNLOADING, &qedf->flags);
3722
3723         /* Logoff the fabric to upload all connections */
3724         if (mode == QEDF_MODE_RECOVERY)
3725                 fcoe_ctlr_link_down(&qedf->ctlr);
3726         else
3727                 fc_fabric_logoff(qedf->lport);
3728
3729         if (!qedf_wait_for_upload(qedf))
3730                 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n");
3731
3732 #ifdef CONFIG_DEBUG_FS
3733         qedf_dbg_host_exit(&(qedf->dbg_ctx));
3734 #endif
3735
3736         /* Stop any link update handling */
3737         cancel_delayed_work_sync(&qedf->link_update);
3738         destroy_workqueue(qedf->link_update_wq);
3739         qedf->link_update_wq = NULL;
3740
3741         if (qedf->timer_work_queue)
3742                 destroy_workqueue(qedf->timer_work_queue);
3743
3744         /* Stop Light L2 */
3745         clear_bit(QEDF_LL2_STARTED, &qedf->flags);
3746         qed_ops->ll2->stop(qedf->cdev);
3747         if (qedf->ll2_recv_wq)
3748                 destroy_workqueue(qedf->ll2_recv_wq);
3749
3750         /* Stop fastpath */
3751         qedf_sync_free_irqs(qedf);
3752         qedf_destroy_sb(qedf);
3753
3754         /*
3755          * During recovery don't destroy OS constructs that represent the
3756          * physical port.
3757          */
3758         if (mode != QEDF_MODE_RECOVERY) {
3759                 qedf_free_grc_dump_buf(&qedf->grcdump);
3760                 qedf_remove_sysfs_ctx_attr(qedf);
3761
3762                 /* Remove all SCSI/libfc/libfcoe structures */
3763                 fcoe_ctlr_destroy(&qedf->ctlr);
3764                 fc_lport_destroy(qedf->lport);
3765                 fc_remove_host(qedf->lport->host);
3766                 scsi_remove_host(qedf->lport->host);
3767         }
3768
3769         qedf_cmd_mgr_free(qedf->cmd_mgr);
3770
3771         if (mode != QEDF_MODE_RECOVERY) {
3772                 fc_exch_mgr_free(qedf->lport);
3773                 fc_lport_free_stats(qedf->lport);
3774
3775                 /* Wait for all vports to be reaped */
3776                 qedf_wait_for_vport_destroy(qedf);
3777         }
3778
3779         /*
3780          * Now that all connections have been uploaded we can stop the
3781          * rest of the qed operations
3782          */
3783         qed_ops->stop(qedf->cdev);
3784
3785         if (mode != QEDF_MODE_RECOVERY) {
3786                 if (qedf->dpc_wq) {
3787                         /* Stop general DPC handling */
3788                         destroy_workqueue(qedf->dpc_wq);
3789                         qedf->dpc_wq = NULL;
3790                 }
3791         }
3792
3793         /* Final shutdown for the board */
3794         qedf_free_fcoe_pf_param(qedf);
3795         if (mode != QEDF_MODE_RECOVERY) {
3796                 qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3797                 pci_set_drvdata(pdev, NULL);
3798         }
3799
3800         rc = qed_ops->common->update_drv_state(qedf->cdev, false);
3801         if (rc)
3802                 QEDF_ERR(&(qedf->dbg_ctx),
3803                         "Failed to send drv state to MFW.\n");
3804
3805         if (mode != QEDF_MODE_RECOVERY && qedf->devlink) {
3806                 qed_ops->common->devlink_unregister(qedf->devlink);
3807                 qedf->devlink = NULL;
3808         }
3809
3810         qed_ops->common->slowpath_stop(qedf->cdev);
3811         qed_ops->common->remove(qedf->cdev);
3812
3813         mempool_destroy(qedf->io_mempool);
3814
3815         /* Only reap the Scsi_host on a real removal */
3816         if (mode != QEDF_MODE_RECOVERY)
3817                 scsi_host_put(qedf->lport->host);
3818 }
3819
3820 static void qedf_remove(struct pci_dev *pdev)
3821 {
3822         /* Check to make sure this function wasn't already disabled */
3823         if (!atomic_read(&pdev->enable_cnt))
3824                 return;
3825
3826         __qedf_remove(pdev, QEDF_MODE_NORMAL);
3827 }
3828
3829 void qedf_wq_grcdump(struct work_struct *work)
3830 {
3831         struct qedf_ctx *qedf =
3832             container_of(work, struct qedf_ctx, grcdump_work.work);
3833
3834         QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n");
3835         qedf_capture_grc_dump(qedf);
3836 }
3837
3838 void qedf_schedule_hw_err_handler(void *dev, enum qed_hw_err_type err_type)
3839 {
3840         struct qedf_ctx *qedf = dev;
3841
3842         QEDF_ERR(&(qedf->dbg_ctx),
3843                         "Hardware error handler scheduled, event=%d.\n",
3844                         err_type);
3845
3846         if (test_bit(QEDF_IN_RECOVERY, &qedf->flags)) {
3847                 QEDF_ERR(&(qedf->dbg_ctx),
3848                                 "Already in recovery, not scheduling board disable work.\n");
3849                 return;
3850         }
3851
3852         switch (err_type) {
3853         case QED_HW_ERR_FAN_FAIL:
3854                 schedule_delayed_work(&qedf->board_disable_work, 0);
3855                 break;
3856         case QED_HW_ERR_MFW_RESP_FAIL:
3857         case QED_HW_ERR_HW_ATTN:
3858         case QED_HW_ERR_DMAE_FAIL:
3859         case QED_HW_ERR_FW_ASSERT:
3860                 /* Prevent HW attentions from being reasserted */
3861                 qed_ops->common->attn_clr_enable(qedf->cdev, true);
3862                 break;
3863         case QED_HW_ERR_RAMROD_FAIL:
3864                 /* Prevent HW attentions from being reasserted */
3865                 qed_ops->common->attn_clr_enable(qedf->cdev, true);
3866
3867                 if (qedf_enable_recovery && qedf->devlink)
3868                         qed_ops->common->report_fatal_error(qedf->devlink,
3869                                 err_type);
3870
3871                 break;
3872         default:
3873                 break;
3874         }
3875 }
3876
3877 /*
3878  * Protocol TLV handler
3879  */
3880 void qedf_get_protocol_tlv_data(void *dev, void *data)
3881 {
3882         struct qedf_ctx *qedf = dev;
3883         struct qed_mfw_tlv_fcoe *fcoe = data;
3884         struct fc_lport *lport;
3885         struct Scsi_Host *host;
3886         struct fc_host_attrs *fc_host;
3887         struct fc_host_statistics *hst;
3888
3889         if (!qedf) {
3890                 QEDF_ERR(NULL, "qedf is null.\n");
3891                 return;
3892         }
3893
3894         if (test_bit(QEDF_PROBING, &qedf->flags)) {
3895                 QEDF_ERR(&qedf->dbg_ctx, "Function is still probing.\n");
3896                 return;
3897         }
3898
3899         lport = qedf->lport;
3900         host = lport->host;
3901         fc_host = shost_to_fc_host(host);
3902
3903         /* Force a refresh of the fc_host stats including offload stats */
3904         hst = qedf_fc_get_host_stats(host);
3905
3906         fcoe->qos_pri_set = true;
3907         fcoe->qos_pri = 3; /* Hard coded to 3 in driver */
3908
3909         fcoe->ra_tov_set = true;
3910         fcoe->ra_tov = lport->r_a_tov;
3911
3912         fcoe->ed_tov_set = true;
3913         fcoe->ed_tov = lport->e_d_tov;
3914
3915         fcoe->npiv_state_set = true;
3916         fcoe->npiv_state = 1; /* NPIV always enabled */
3917
3918         fcoe->num_npiv_ids_set = true;
3919         fcoe->num_npiv_ids = fc_host->npiv_vports_inuse;
3920
3921         /* Certain attributes we only want to set if we've selected an FCF */
3922         if (qedf->ctlr.sel_fcf) {
3923                 fcoe->switch_name_set = true;
3924                 u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name);
3925         }
3926
3927         fcoe->port_state_set = true;
3928         /* For qedf we're either link down or fabric attach */
3929         if (lport->link_up)
3930                 fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC;
3931         else
3932                 fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE;
3933
3934         fcoe->link_failures_set = true;
3935         fcoe->link_failures = (u16)hst->link_failure_count;
3936
3937         fcoe->fcoe_txq_depth_set = true;
3938         fcoe->fcoe_rxq_depth_set = true;
3939         fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS;
3940         fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS;
3941
3942         fcoe->fcoe_rx_frames_set = true;
3943         fcoe->fcoe_rx_frames = hst->rx_frames;
3944
3945         fcoe->fcoe_tx_frames_set = true;
3946         fcoe->fcoe_tx_frames = hst->tx_frames;
3947
3948         fcoe->fcoe_rx_bytes_set = true;
3949         fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000;
3950
3951         fcoe->fcoe_tx_bytes_set = true;
3952         fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000;
3953
3954         fcoe->crc_count_set = true;
3955         fcoe->crc_count = hst->invalid_crc_count;
3956
3957         fcoe->tx_abts_set = true;
3958         fcoe->tx_abts = hst->fcp_packet_aborts;
3959
3960         fcoe->tx_lun_rst_set = true;
3961         fcoe->tx_lun_rst = qedf->lun_resets;
3962
3963         fcoe->abort_task_sets_set = true;
3964         fcoe->abort_task_sets = qedf->packet_aborts;
3965
3966         fcoe->scsi_busy_set = true;
3967         fcoe->scsi_busy = qedf->busy;
3968
3969         fcoe->scsi_tsk_full_set = true;
3970         fcoe->scsi_tsk_full = qedf->task_set_fulls;
3971 }
3972
3973 /* Deferred work function to perform soft context reset on STAG change */
3974 void qedf_stag_change_work(struct work_struct *work)
3975 {
3976         struct qedf_ctx *qedf =
3977             container_of(work, struct qedf_ctx, stag_work.work);
3978
3979         QEDF_ERR(&qedf->dbg_ctx, "Performing software context reset.\n");
3980         qedf_ctx_soft_reset(qedf->lport);
3981 }
3982
3983 static void qedf_shutdown(struct pci_dev *pdev)
3984 {
3985         __qedf_remove(pdev, QEDF_MODE_NORMAL);
3986 }
3987
3988 /*
3989  * Recovery handler code
3990  */
3991 static void qedf_schedule_recovery_handler(void *dev)
3992 {
3993         struct qedf_ctx *qedf = dev;
3994
3995         QEDF_ERR(&qedf->dbg_ctx, "Recovery handler scheduled.\n");
3996         schedule_delayed_work(&qedf->recovery_work, 0);
3997 }
3998
3999 static void qedf_recovery_handler(struct work_struct *work)
4000 {
4001         struct qedf_ctx *qedf =
4002             container_of(work, struct qedf_ctx, recovery_work.work);
4003
4004         if (test_and_set_bit(QEDF_IN_RECOVERY, &qedf->flags))
4005                 return;
4006
4007         /*
4008          * Call common_ops->recovery_prolog to allow the MFW to quiesce
4009          * any PCI transactions.
4010          */
4011         qed_ops->common->recovery_prolog(qedf->cdev);
4012
4013         QEDF_ERR(&qedf->dbg_ctx, "Recovery work start.\n");
4014         __qedf_remove(qedf->pdev, QEDF_MODE_RECOVERY);
4015         /*
4016          * Reset link and dcbx to down state since we will not get a link down
4017          * event from the MFW but calling __qedf_remove will essentially be a
4018          * link down event.
4019          */
4020         atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
4021         atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
4022         __qedf_probe(qedf->pdev, QEDF_MODE_RECOVERY);
4023         clear_bit(QEDF_IN_RECOVERY, &qedf->flags);
4024         QEDF_ERR(&qedf->dbg_ctx, "Recovery work complete.\n");
4025 }
4026
4027 /* Generic TLV data callback */
4028 void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
4029 {
4030         struct qedf_ctx *qedf;
4031
4032         if (!dev) {
4033                 QEDF_INFO(NULL, QEDF_LOG_EVT,
4034                           "dev is NULL so ignoring get_generic_tlv_data request.\n");
4035                 return;
4036         }
4037         qedf = (struct qedf_ctx *)dev;
4038
4039         memset(data, 0, sizeof(struct qed_generic_tlvs));
4040         ether_addr_copy(data->mac[0], qedf->mac);
4041 }
4042
4043 /*
4044  * Module Init/Remove
4045  */
4046
4047 static int __init qedf_init(void)
4048 {
4049         int ret;
4050
4051         /* If debug=1 passed, set the default log mask */
4052         if (qedf_debug == QEDF_LOG_DEFAULT)
4053                 qedf_debug = QEDF_DEFAULT_LOG_MASK;
4054
4055         /*
4056          * Check that default prio for FIP/FCoE traffic is between 0..7 if a
4057          * value has been set
4058          */
4059         if (qedf_default_prio > -1)
4060                 if (qedf_default_prio > 7) {
4061                         qedf_default_prio = QEDF_DEFAULT_PRIO;
4062                         QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n",
4063                             QEDF_DEFAULT_PRIO);
4064                 }
4065
4066         /* Print driver banner */
4067         QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR,
4068                    QEDF_VERSION);
4069
4070         /* Create kmem_cache for qedf_io_work structs */
4071         qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache",
4072             sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL);
4073         if (qedf_io_work_cache == NULL) {
4074                 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n");
4075                 goto err1;
4076         }
4077         QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n",
4078             qedf_io_work_cache);
4079
4080         qed_ops = qed_get_fcoe_ops();
4081         if (!qed_ops) {
4082                 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n");
4083                 goto err1;
4084         }
4085
4086 #ifdef CONFIG_DEBUG_FS
4087         qedf_dbg_init("qedf");
4088 #endif
4089
4090         qedf_fc_transport_template =
4091             fc_attach_transport(&qedf_fc_transport_fn);
4092         if (!qedf_fc_transport_template) {
4093                 QEDF_ERR(NULL, "Could not register with FC transport\n");
4094                 goto err2;
4095         }
4096
4097         qedf_fc_vport_transport_template =
4098                 fc_attach_transport(&qedf_fc_vport_transport_fn);
4099         if (!qedf_fc_vport_transport_template) {
4100                 QEDF_ERR(NULL, "Could not register vport template with FC "
4101                           "transport\n");
4102                 goto err3;
4103         }
4104
4105         qedf_io_wq = create_workqueue("qedf_io_wq");
4106         if (!qedf_io_wq) {
4107                 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n");
4108                 goto err4;
4109         }
4110
4111         qedf_cb_ops.get_login_failures = qedf_get_login_failures;
4112
4113         ret = pci_register_driver(&qedf_pci_driver);
4114         if (ret) {
4115                 QEDF_ERR(NULL, "Failed to register driver\n");
4116                 goto err5;
4117         }
4118
4119         return 0;
4120
4121 err5:
4122         destroy_workqueue(qedf_io_wq);
4123 err4:
4124         fc_release_transport(qedf_fc_vport_transport_template);
4125 err3:
4126         fc_release_transport(qedf_fc_transport_template);
4127 err2:
4128 #ifdef CONFIG_DEBUG_FS
4129         qedf_dbg_exit();
4130 #endif
4131         qed_put_fcoe_ops();
4132 err1:
4133         return -EINVAL;
4134 }
4135
4136 static void __exit qedf_cleanup(void)
4137 {
4138         pci_unregister_driver(&qedf_pci_driver);
4139
4140         destroy_workqueue(qedf_io_wq);
4141
4142         fc_release_transport(qedf_fc_vport_transport_template);
4143         fc_release_transport(qedf_fc_transport_template);
4144 #ifdef CONFIG_DEBUG_FS
4145         qedf_dbg_exit();
4146 #endif
4147         qed_put_fcoe_ops();
4148
4149         kmem_cache_destroy(qedf_io_work_cache);
4150 }
4151
4152 MODULE_LICENSE("GPL");
4153 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx FCoE Module");
4154 MODULE_AUTHOR("QLogic Corporation");
4155 MODULE_VERSION(QEDF_VERSION);
4156 module_init(qedf_init);
4157 module_exit(qedf_cleanup);