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 static int qedf_suspend(struct pci_dev *pdev, pm_message_t state);
  35
  36 /*
  37  * Driver module parameters.
  38  */
  39 static unsigned int qedf_dev_loss_tmo = 60;
  40 module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO);
  41 MODULE_PARM_DESC(dev_loss_tmo,  " dev_loss_tmo setting for attached "
  42         "remote ports (default 60)");
  43
  44 uint qedf_debug = QEDF_LOG_INFO;
  45 module_param_named(debug, qedf_debug, uint, S_IRUGO|S_IWUSR);
  46 MODULE_PARM_DESC(debug, " Debug mask. Pass '1' to enable default debugging"
  47         " mask");
  48
  49 static uint qedf_fipvlan_retries = 60;
  50 module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO);
  51 MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt "
  52         "before giving up (default 60)");
  53
  54 static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN;
  55 module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO);
  56 MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails "
  57         "(default 1002).");
  58
  59 static int qedf_default_prio = -1;
  60 module_param_named(default_prio, qedf_default_prio, int, S_IRUGO);
  61 MODULE_PARM_DESC(default_prio, " Override 802.1q priority for FIP and FCoE"
  62         " traffic (value between 0 and 7, default 3).");
  63
  64 uint qedf_dump_frames;
  65 module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR);
  66 MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames "
  67         "(default off)");
  68
  69 static uint qedf_queue_depth;
  70 module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO);
  71 MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered "
  72         "by the qedf driver. Default is 0 (use OS default).");
  73
  74 uint qedf_io_tracing;
  75 module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR);
  76 MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions "
  77         "into trace buffer. (default off).");
  78
  79 static uint qedf_max_lun = MAX_FIBRE_LUNS;
  80 module_param_named(max_lun, qedf_max_lun, int, S_IRUGO);
  81 MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver "
  82         "supports. (default 0xffffffff)");
  83
  84 uint qedf_link_down_tmo;
  85 module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO);
  86 MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the "
  87         "link is down by N seconds.");
  88
  89 bool qedf_retry_delay;
  90 module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR);
  91 MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry "
  92         "delay handling (default off).");
  93
  94 static bool qedf_dcbx_no_wait;
  95 module_param_named(dcbx_no_wait, qedf_dcbx_no_wait, bool, S_IRUGO | S_IWUSR);
  96 MODULE_PARM_DESC(dcbx_no_wait, " Do not wait for DCBX convergence to start "
  97         "sending FIP VLAN requests on link up (Default: off).");
  98
  99 static uint qedf_dp_module;
 100 module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO);
 101 MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed "
 102         "qed module during probe.");
 103
 104 static uint qedf_dp_level = QED_LEVEL_NOTICE;
 105 module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO);
 106 MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module  "
 107         "during probe (0-3: 0 more verbose).");
 108
 109 static bool qedf_enable_recovery = true;
 110 module_param_named(enable_recovery, qedf_enable_recovery,
 111                 bool, S_IRUGO | S_IWUSR);
 112 MODULE_PARM_DESC(enable_recovery, "Enable/disable recovery on driver/firmware "
 113                 "interface level errors 0 = Disabled, 1 = Enabled (Default: 1).");
 114
 115 struct workqueue_struct *qedf_io_wq;
 116
 117 static struct fcoe_percpu_s qedf_global;
 118 static DEFINE_SPINLOCK(qedf_global_lock);
 119
 120 static struct kmem_cache *qedf_io_work_cache;
 121
 122 void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id)
 123 {
 124         int vlan_id_tmp = 0;
 125
 126         vlan_id_tmp = vlan_id  | (qedf->prio << VLAN_PRIO_SHIFT);
 127         qedf->vlan_id = vlan_id_tmp;
 128         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 129                   "Setting vlan_id=0x%04x prio=%d.\n",
 130                   vlan_id_tmp, qedf->prio);
 131 }
 132
 133 /* Returns true if we have a valid vlan, false otherwise */
 134 static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf)
 135 {
 136
 137         while (qedf->fipvlan_retries--) {
 138                 /* This is to catch if link goes down during fipvlan retries */
 139                 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
 140                         QEDF_ERR(&qedf->dbg_ctx, "Link not up.\n");
 141                         return false;
 142                 }
 143
 144                 if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
 145                         QEDF_ERR(&qedf->dbg_ctx, "Driver unloading.\n");
 146                         return false;
 147                 }
 148
 149                 if (qedf->vlan_id > 0) {
 150                         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 151                                   "vlan = 0x%x already set, calling ctlr_link_up.\n",
 152                                   qedf->vlan_id);
 153                         if (atomic_read(&qedf->link_state) == QEDF_LINK_UP)
 154                                 fcoe_ctlr_link_up(&qedf->ctlr);
 155                         return true;
 156                 }
 157
 158                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 159                            "Retry %d.\n", qedf->fipvlan_retries);
 160                 init_completion(&qedf->fipvlan_compl);
 161                 qedf_fcoe_send_vlan_req(qedf);
 162                 wait_for_completion_timeout(&qedf->fipvlan_compl, 1 * HZ);
 163         }
 164
 165         return false;
 166 }
 167
 168 static void qedf_handle_link_update(struct work_struct *work)
 169 {
 170         struct qedf_ctx *qedf =
 171             container_of(work, struct qedf_ctx, link_update.work);
 172         int rc;
 173
 174         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Entered. link_state=%d.\n",
 175                   atomic_read(&qedf->link_state));
 176
 177         if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
 178                 rc = qedf_initiate_fipvlan_req(qedf);
 179                 if (rc)
 180                         return;
 181
 182                 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
 183                         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 184                                   "Link is down, resetting vlan_id.\n");
 185                         qedf->vlan_id = 0;
 186                         return;
 187                 }
 188
 189                 /*
 190                  * If we get here then we never received a repsonse to our
 191                  * fip vlan request so set the vlan_id to the default and
 192                  * tell FCoE that the link is up
 193                  */
 194                 QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN "
 195                            "response, falling back to default VLAN %d.\n",
 196                            qedf_fallback_vlan);
 197                 qedf_set_vlan_id(qedf, qedf_fallback_vlan);
 198
 199                 /*
 200                  * Zero out data_src_addr so we'll update it with the new
 201                  * lport port_id
 202                  */
 203                 eth_zero_addr(qedf->data_src_addr);
 204                 fcoe_ctlr_link_up(&qedf->ctlr);
 205         } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
 206                 /*
 207                  * If we hit here and link_down_tmo_valid is still 1 it means
 208                  * that link_down_tmo timed out so set it to 0 to make sure any
 209                  * other readers have accurate state.
 210                  */
 211                 atomic_set(&qedf->link_down_tmo_valid, 0);
 212                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 213                     "Calling fcoe_ctlr_link_down().\n");
 214                 fcoe_ctlr_link_down(&qedf->ctlr);
 215                 if (qedf_wait_for_upload(qedf) == false)
 216                         QEDF_ERR(&qedf->dbg_ctx,
 217                                  "Could not upload all sessions.\n");
 218                 /* Reset the number of FIP VLAN retries */
 219                 qedf->fipvlan_retries = qedf_fipvlan_retries;
 220         }
 221 }
 222
 223 #define QEDF_FCOE_MAC_METHOD_GRANGED_MAC                1
 224 #define QEDF_FCOE_MAC_METHOD_FCF_MAP                    2
 225 #define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC               3
 226 static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp)
 227 {
 228         u8 *granted_mac;
 229         struct fc_frame_header *fh = fc_frame_header_get(fp);
 230         u8 fc_map[3];
 231         int method = 0;
 232
 233         /* Get granted MAC address from FIP FLOGI payload */
 234         granted_mac = fr_cb(fp)->granted_mac;
 235
 236         /*
 237          * We set the source MAC for FCoE traffic based on the Granted MAC
 238          * address from the switch.
 239          *
 240          * If granted_mac is non-zero, we used that.
 241          * If the granted_mac is zeroed out, created the FCoE MAC based on
 242          * the sel_fcf->fc_map and the d_id fo the FLOGI frame.
 243          * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the
 244          * d_id of the FLOGI frame.
 245          */
 246         if (!is_zero_ether_addr(granted_mac)) {
 247                 ether_addr_copy(qedf->data_src_addr, granted_mac);
 248                 method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC;
 249         } else if (qedf->ctlr.sel_fcf->fc_map != 0) {
 250                 hton24(fc_map, qedf->ctlr.sel_fcf->fc_map);
 251                 qedf->data_src_addr[0] = fc_map[0];
 252                 qedf->data_src_addr[1] = fc_map[1];
 253                 qedf->data_src_addr[2] = fc_map[2];
 254                 qedf->data_src_addr[3] = fh->fh_d_id[0];
 255                 qedf->data_src_addr[4] = fh->fh_d_id[1];
 256                 qedf->data_src_addr[5] = fh->fh_d_id[2];
 257                 method = QEDF_FCOE_MAC_METHOD_FCF_MAP;
 258         } else {
 259                 fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id);
 260                 method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC;
 261         }
 262
 263         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 264             "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method);
 265 }
 266
 267 static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp,
 268         void *arg)
 269 {
 270         struct fc_exch *exch = fc_seq_exch(seq);
 271         struct fc_lport *lport = exch->lp;
 272         struct qedf_ctx *qedf = lport_priv(lport);
 273
 274         if (!qedf) {
 275                 QEDF_ERR(NULL, "qedf is NULL.\n");
 276                 return;
 277         }
 278
 279         /*
 280          * If ERR_PTR is set then don't try to stat anything as it will cause
 281          * a crash when we access fp.
 282          */
 283         if (IS_ERR(fp)) {
 284                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
 285                     "fp has IS_ERR() set.\n");
 286                 goto skip_stat;
 287         }
 288
 289         /* Log stats for FLOGI reject */
 290         if (fc_frame_payload_op(fp) == ELS_LS_RJT)
 291                 qedf->flogi_failed++;
 292         else if (fc_frame_payload_op(fp) == ELS_LS_ACC) {
 293                 /* Set the source MAC we will use for FCoE traffic */
 294                 qedf_set_data_src_addr(qedf, fp);
 295                 qedf->flogi_pending = 0;
 296         }
 297
 298         /* Complete flogi_compl so we can proceed to sending ADISCs */
 299         complete(&qedf->flogi_compl);
 300
 301 skip_stat:
 302         /* Report response to libfc */
 303         fc_lport_flogi_resp(seq, fp, lport);
 304 }
 305
 306 static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did,
 307         struct fc_frame *fp, unsigned int op,
 308         void (*resp)(struct fc_seq *,
 309         struct fc_frame *,
 310         void *),
 311         void *arg, u32 timeout)
 312 {
 313         struct qedf_ctx *qedf = lport_priv(lport);
 314
 315         /*
 316          * Intercept FLOGI for statistic purposes. Note we use the resp
 317          * callback to tell if this is really a flogi.
 318          */
 319         if (resp == fc_lport_flogi_resp) {
 320                 qedf->flogi_cnt++;
 321                 if (qedf->flogi_pending >= QEDF_FLOGI_RETRY_CNT) {
 322                         schedule_delayed_work(&qedf->stag_work, 2);
 323                         return NULL;
 324                 }
 325                 qedf->flogi_pending++;
 326                 return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp,
 327                     arg, timeout);
 328         }
 329
 330         return fc_elsct_send(lport, did, fp, op, resp, arg, timeout);
 331 }
 332
 333 int qedf_send_flogi(struct qedf_ctx *qedf)
 334 {
 335         struct fc_lport *lport;
 336         struct fc_frame *fp;
 337
 338         lport = qedf->lport;
 339
 340         if (!lport->tt.elsct_send) {
 341                 QEDF_ERR(&qedf->dbg_ctx, "tt.elsct_send not set.\n");
 342                 return -EINVAL;
 343         }
 344
 345         fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi));
 346         if (!fp) {
 347                 QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n");
 348                 return -ENOMEM;
 349         }
 350
 351         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
 352             "Sending FLOGI to reestablish session with switch.\n");
 353         lport->tt.elsct_send(lport, FC_FID_FLOGI, fp,
 354             ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov);
 355
 356         init_completion(&qedf->flogi_compl);
 357
 358         return 0;
 359 }
 360
 361 /*
 362  * This function is called if link_down_tmo is in use.  If we get a link up and
 363  * link_down_tmo has not expired then use just FLOGI/ADISC to recover our
 364  * sessions with targets.  Otherwise, just call fcoe_ctlr_link_up().
 365  */
 366 static void qedf_link_recovery(struct work_struct *work)
 367 {
 368         struct qedf_ctx *qedf =
 369             container_of(work, struct qedf_ctx, link_recovery.work);
 370         struct fc_lport *lport = qedf->lport;
 371         struct fc_rport_priv *rdata;
 372         bool rc;
 373         int retries = 30;
 374         int rval, i;
 375         struct list_head rdata_login_list;
 376
 377         INIT_LIST_HEAD(&rdata_login_list);
 378
 379         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 380             "Link down tmo did not expire.\n");
 381
 382         /*
 383          * Essentially reset the fcoe_ctlr here without affecting the state
 384          * of the libfc structs.
 385          */
 386         qedf->ctlr.state = FIP_ST_LINK_WAIT;
 387         fcoe_ctlr_link_down(&qedf->ctlr);
 388
 389         /*
 390          * Bring the link up before we send the fipvlan request so libfcoe
 391          * can select a new fcf in parallel
 392          */
 393         fcoe_ctlr_link_up(&qedf->ctlr);
 394
 395         /* Since the link when down and up to verify which vlan we're on */
 396         qedf->fipvlan_retries = qedf_fipvlan_retries;
 397         rc = qedf_initiate_fipvlan_req(qedf);
 398         /* If getting the VLAN fails, set the VLAN to the fallback one */
 399         if (!rc)
 400                 qedf_set_vlan_id(qedf, qedf_fallback_vlan);
 401
 402         /*
 403          * We need to wait for an FCF to be selected due to the
 404          * fcoe_ctlr_link_up other the FLOGI will be rejected.
 405          */
 406         while (retries > 0) {
 407                 if (qedf->ctlr.sel_fcf) {
 408                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 409                             "FCF reselected, proceeding with FLOGI.\n");
 410                         break;
 411                 }
 412                 msleep(500);
 413                 retries--;
 414         }
 415
 416         if (retries < 1) {
 417                 QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for "
 418                     "FCF selection.\n");
 419                 return;
 420         }
 421
 422         rval = qedf_send_flogi(qedf);
 423         if (rval)
 424                 return;
 425
 426         /* Wait for FLOGI completion before proceeding with sending ADISCs */
 427         i = wait_for_completion_timeout(&qedf->flogi_compl,
 428             qedf->lport->r_a_tov);
 429         if (i == 0) {
 430                 QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n");
 431                 return;
 432         }
 433
 434         /*
 435          * Call lport->tt.rport_login which will cause libfc to send an
 436          * ADISC since the rport is in state ready.
 437          */
 438         mutex_lock(&lport->disc.disc_mutex);
 439         list_for_each_entry_rcu(rdata, &lport->disc.rports, peers) {
 440                 if (kref_get_unless_zero(&rdata->kref)) {
 441                         fc_rport_login(rdata);
 442                         kref_put(&rdata->kref, fc_rport_destroy);
 443                 }
 444         }
 445         mutex_unlock(&lport->disc.disc_mutex);
 446 }
 447
 448 static void qedf_update_link_speed(struct qedf_ctx *qedf,
 449         struct qed_link_output *link)
 450 {
 451         __ETHTOOL_DECLARE_LINK_MODE_MASK(sup_caps);
 452         struct fc_lport *lport = qedf->lport;
 453
 454         lport->link_speed = FC_PORTSPEED_UNKNOWN;
 455         lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN;
 456
 457         /* Set fc_host link speed */
 458         switch (link->speed) {
 459         case 10000:
 460                 lport->link_speed = FC_PORTSPEED_10GBIT;
 461                 break;
 462         case 25000:
 463                 lport->link_speed = FC_PORTSPEED_25GBIT;
 464                 break;
 465         case 40000:
 466                 lport->link_speed = FC_PORTSPEED_40GBIT;
 467                 break;
 468         case 50000:
 469                 lport->link_speed = FC_PORTSPEED_50GBIT;
 470                 break;
 471         case 100000:
 472                 lport->link_speed = FC_PORTSPEED_100GBIT;
 473                 break;
 474         case 20000:
 475                 lport->link_speed = FC_PORTSPEED_20GBIT;
 476                 break;
 477         default:
 478                 lport->link_speed = FC_PORTSPEED_UNKNOWN;
 479                 break;
 480         }
 481
 482         /*
 483          * Set supported link speed by querying the supported
 484          * capabilities of the link.
 485          */
 486
 487         phylink_zero(sup_caps);
 488         phylink_set(sup_caps, 10000baseT_Full);
 489         phylink_set(sup_caps, 10000baseKX4_Full);
 490         phylink_set(sup_caps, 10000baseR_FEC);
 491         phylink_set(sup_caps, 10000baseCR_Full);
 492         phylink_set(sup_caps, 10000baseSR_Full);
 493         phylink_set(sup_caps, 10000baseLR_Full);
 494         phylink_set(sup_caps, 10000baseLRM_Full);
 495         phylink_set(sup_caps, 10000baseKR_Full);
 496
 497         if (linkmode_intersects(link->supported_caps, sup_caps))
 498                 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT;
 499
 500         phylink_zero(sup_caps);
 501         phylink_set(sup_caps, 25000baseKR_Full);
 502         phylink_set(sup_caps, 25000baseCR_Full);
 503         phylink_set(sup_caps, 25000baseSR_Full);
 504
 505         if (linkmode_intersects(link->supported_caps, sup_caps))
 506                 lport->link_supported_speeds |= FC_PORTSPEED_25GBIT;
 507
 508         phylink_zero(sup_caps);
 509         phylink_set(sup_caps, 40000baseLR4_Full);
 510         phylink_set(sup_caps, 40000baseKR4_Full);
 511         phylink_set(sup_caps, 40000baseCR4_Full);
 512         phylink_set(sup_caps, 40000baseSR4_Full);
 513
 514         if (linkmode_intersects(link->supported_caps, sup_caps))
 515                 lport->link_supported_speeds |= FC_PORTSPEED_40GBIT;
 516
 517         phylink_zero(sup_caps);
 518         phylink_set(sup_caps, 50000baseKR2_Full);
 519         phylink_set(sup_caps, 50000baseCR2_Full);
 520         phylink_set(sup_caps, 50000baseSR2_Full);
 521
 522         if (linkmode_intersects(link->supported_caps, sup_caps))
 523                 lport->link_supported_speeds |= FC_PORTSPEED_50GBIT;
 524
 525         phylink_zero(sup_caps);
 526         phylink_set(sup_caps, 100000baseKR4_Full);
 527         phylink_set(sup_caps, 100000baseSR4_Full);
 528         phylink_set(sup_caps, 100000baseCR4_Full);
 529         phylink_set(sup_caps, 100000baseLR4_ER4_Full);
 530
 531         if (linkmode_intersects(link->supported_caps, sup_caps))
 532                 lport->link_supported_speeds |= FC_PORTSPEED_100GBIT;
 533
 534         phylink_zero(sup_caps);
 535         phylink_set(sup_caps, 20000baseKR2_Full);
 536
 537         if (linkmode_intersects(link->supported_caps, sup_caps))
 538                 lport->link_supported_speeds |= FC_PORTSPEED_20GBIT;
 539
 540         if (lport->host && lport->host->shost_data)
 541                 fc_host_supported_speeds(lport->host) =
 542                         lport->link_supported_speeds;
 543 }
 544
 545 static void qedf_bw_update(void *dev)
 546 {
 547         struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
 548         struct qed_link_output link;
 549
 550         /* Get the latest status of the link */
 551         qed_ops->common->get_link(qedf->cdev, &link);
 552
 553         if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
 554                 QEDF_ERR(&qedf->dbg_ctx,
 555                          "Ignore link update, driver getting unload.\n");
 556                 return;
 557         }
 558
 559         if (link.link_up) {
 560                 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP)
 561                         qedf_update_link_speed(qedf, &link);
 562                 else
 563                         QEDF_ERR(&qedf->dbg_ctx,
 564                                  "Ignore bw update, link is down.\n");
 565
 566         } else {
 567                 QEDF_ERR(&qedf->dbg_ctx, "link_up is not set.\n");
 568         }
 569 }
 570
 571 static void qedf_link_update(void *dev, struct qed_link_output *link)
 572 {
 573         struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
 574
 575         /*
 576          * Prevent race where we're removing the module and we get link update
 577          * for qed.
 578          */
 579         if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
 580                 QEDF_ERR(&qedf->dbg_ctx,
 581                          "Ignore link update, driver getting unload.\n");
 582                 return;
 583         }
 584
 585         if (link->link_up) {
 586                 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
 587                         QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC,
 588                             "Ignoring link up event as link is already up.\n");
 589                         return;
 590                 }
 591                 QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n",
 592                     link->speed / 1000);
 593
 594                 /* Cancel any pending link down work */
 595                 cancel_delayed_work(&qedf->link_update);
 596
 597                 atomic_set(&qedf->link_state, QEDF_LINK_UP);
 598                 qedf_update_link_speed(qedf, link);
 599
 600                 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE ||
 601                     qedf_dcbx_no_wait) {
 602                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 603                              "DCBx done.\n");
 604                         if (atomic_read(&qedf->link_down_tmo_valid) > 0)
 605                                 queue_delayed_work(qedf->link_update_wq,
 606                                     &qedf->link_recovery, 0);
 607                         else
 608                                 queue_delayed_work(qedf->link_update_wq,
 609                                     &qedf->link_update, 0);
 610                         atomic_set(&qedf->link_down_tmo_valid, 0);
 611                 }
 612
 613         } else {
 614                 QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n");
 615
 616                 atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
 617                 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
 618                 /*
 619                  * Flag that we're waiting for the link to come back up before
 620                  * informing the fcoe layer of the event.
 621                  */
 622                 if (qedf_link_down_tmo > 0) {
 623                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 624                             "Starting link down tmo.\n");
 625                         atomic_set(&qedf->link_down_tmo_valid, 1);
 626                 }
 627                 qedf->vlan_id = 0;
 628                 qedf_update_link_speed(qedf, link);
 629                 queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 630                     qedf_link_down_tmo * HZ);
 631         }
 632 }
 633
 634
 635 static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type)
 636 {
 637         struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
 638         u8 tmp_prio;
 639
 640         QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe "
 641             "prio=%d.\n", get->operational.valid, get->operational.enabled,
 642             get->operational.app_prio.fcoe);
 643
 644         if (get->operational.enabled && get->operational.valid) {
 645                 /* If DCBX was already negotiated on link up then just exit */
 646                 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) {
 647                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 648                             "DCBX already set on link up.\n");
 649                         return;
 650                 }
 651
 652                 atomic_set(&qedf->dcbx, QEDF_DCBX_DONE);
 653
 654                 /*
 655                  * Set the 8021q priority in the following manner:
 656                  *
 657                  * 1. If a modparam is set use that
 658                  * 2. If the value is not between 0..7 use the default
 659                  * 3. Use the priority we get from the DCBX app tag
 660                  */
 661                 tmp_prio = get->operational.app_prio.fcoe;
 662                 if (qedf_default_prio > -1)
 663                         qedf->prio = qedf_default_prio;
 664                 else if (tmp_prio > 7) {
 665                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 666                             "FIP/FCoE prio %d out of range, setting to %d.\n",
 667                             tmp_prio, QEDF_DEFAULT_PRIO);
 668                         qedf->prio = QEDF_DEFAULT_PRIO;
 669                 } else
 670                         qedf->prio = tmp_prio;
 671
 672                 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP &&
 673                     !qedf_dcbx_no_wait) {
 674                         if (atomic_read(&qedf->link_down_tmo_valid) > 0)
 675                                 queue_delayed_work(qedf->link_update_wq,
 676                                     &qedf->link_recovery, 0);
 677                         else
 678                                 queue_delayed_work(qedf->link_update_wq,
 679                                     &qedf->link_update, 0);
 680                         atomic_set(&qedf->link_down_tmo_valid, 0);
 681                 }
 682         }
 683
 684 }
 685
 686 static u32 qedf_get_login_failures(void *cookie)
 687 {
 688         struct qedf_ctx *qedf;
 689
 690         qedf = (struct qedf_ctx *)cookie;
 691         return qedf->flogi_failed;
 692 }
 693
 694 static struct qed_fcoe_cb_ops qedf_cb_ops = {
 695         {
 696                 .link_update = qedf_link_update,
 697                 .bw_update = qedf_bw_update,
 698                 .schedule_recovery_handler = qedf_schedule_recovery_handler,
 699                 .dcbx_aen = qedf_dcbx_handler,
 700                 .get_generic_tlv_data = qedf_get_generic_tlv_data,
 701                 .get_protocol_tlv_data = qedf_get_protocol_tlv_data,
 702                 .schedule_hw_err_handler = qedf_schedule_hw_err_handler,
 703         }
 704 };
 705
 706 /*
 707  * Various transport templates.
 708  */
 709
 710 static struct scsi_transport_template *qedf_fc_transport_template;
 711 static struct scsi_transport_template *qedf_fc_vport_transport_template;
 712
 713 /*
 714  * SCSI EH handlers
 715  */
 716 static int qedf_eh_abort(struct scsi_cmnd *sc_cmd)
 717 {
 718         struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
 719         struct fc_lport *lport;
 720         struct qedf_ctx *qedf;
 721         struct qedf_ioreq *io_req;
 722         struct fc_rport_libfc_priv *rp = rport->dd_data;
 723         struct fc_rport_priv *rdata;
 724         struct qedf_rport *fcport = NULL;
 725         int rc = FAILED;
 726         int wait_count = 100;
 727         int refcount = 0;
 728         int rval;
 729         int got_ref = 0;
 730
 731         lport = shost_priv(sc_cmd->device->host);
 732         qedf = (struct qedf_ctx *)lport_priv(lport);
 733
 734         /* rport and tgt are allocated together, so tgt should be non-NULL */
 735         fcport = (struct qedf_rport *)&rp[1];
 736         rdata = fcport->rdata;
 737         if (!rdata || !kref_get_unless_zero(&rdata->kref)) {
 738                 QEDF_ERR(&qedf->dbg_ctx, "stale rport, sc_cmd=%p\n", sc_cmd);
 739                 rc = SUCCESS;
 740                 goto out;
 741         }
 742
 743
 744         io_req = (struct qedf_ioreq *)sc_cmd->SCp.ptr;
 745         if (!io_req) {
 746                 QEDF_ERR(&qedf->dbg_ctx,
 747                          "sc_cmd not queued with lld, sc_cmd=%p op=0x%02x, port_id=%06x\n",
 748                          sc_cmd, sc_cmd->cmnd[0],
 749                          rdata->ids.port_id);
 750                 rc = SUCCESS;
 751                 goto drop_rdata_kref;
 752         }
 753
 754         rval = kref_get_unless_zero(&io_req->refcount); /* ID: 005 */
 755         if (rval)
 756                 got_ref = 1;
 757
 758         /* If we got a valid io_req, confirm it belongs to this sc_cmd. */
 759         if (!rval || io_req->sc_cmd != sc_cmd) {
 760                 QEDF_ERR(&qedf->dbg_ctx,
 761                          "Freed/Incorrect io_req, io_req->sc_cmd=%p, sc_cmd=%p, port_id=%06x, bailing out.\n",
 762                          io_req->sc_cmd, sc_cmd, rdata->ids.port_id);
 763
 764                 goto drop_rdata_kref;
 765         }
 766
 767         if (fc_remote_port_chkready(rport)) {
 768                 refcount = kref_read(&io_req->refcount);
 769                 QEDF_ERR(&qedf->dbg_ctx,
 770                          "rport not ready, io_req=%p, xid=0x%x sc_cmd=%p op=0x%02x, refcount=%d, port_id=%06x\n",
 771                          io_req, io_req->xid, sc_cmd, sc_cmd->cmnd[0],
 772                          refcount, rdata->ids.port_id);
 773
 774                 goto drop_rdata_kref;
 775         }
 776
 777         rc = fc_block_scsi_eh(sc_cmd);
 778         if (rc)
 779                 goto drop_rdata_kref;
 780
 781         if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) {
 782                 QEDF_ERR(&qedf->dbg_ctx,
 783                          "Connection uploading, xid=0x%x., port_id=%06x\n",
 784                          io_req->xid, rdata->ids.port_id);
 785                 while (io_req->sc_cmd && (wait_count != 0)) {
 786                         msleep(100);
 787                         wait_count--;
 788                 }
 789                 if (wait_count) {
 790                         QEDF_ERR(&qedf->dbg_ctx, "ABTS succeeded\n");
 791                         rc = SUCCESS;
 792                 } else {
 793                         QEDF_ERR(&qedf->dbg_ctx, "ABTS failed\n");
 794                         rc = FAILED;
 795                 }
 796                 goto drop_rdata_kref;
 797         }
 798
 799         if (lport->state != LPORT_ST_READY || !(lport->link_up)) {
 800                 QEDF_ERR(&qedf->dbg_ctx, "link not ready.\n");
 801                 goto drop_rdata_kref;
 802         }
 803
 804         QEDF_ERR(&qedf->dbg_ctx,
 805                  "Aborting io_req=%p sc_cmd=%p xid=0x%x fp_idx=%d, port_id=%06x.\n",
 806                  io_req, sc_cmd, io_req->xid, io_req->fp_idx,
 807                  rdata->ids.port_id);
 808
 809         if (qedf->stop_io_on_error) {
 810                 qedf_stop_all_io(qedf);
 811                 rc = SUCCESS;
 812                 goto drop_rdata_kref;
 813         }
 814
 815         init_completion(&io_req->abts_done);
 816         rval = qedf_initiate_abts(io_req, true);
 817         if (rval) {
 818                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n");
 819                 /*
 820                  * If we fail to queue the ABTS then return this command to
 821                  * the SCSI layer as it will own and free the xid
 822                  */
 823                 rc = SUCCESS;
 824                 qedf_scsi_done(qedf, io_req, DID_ERROR);
 825                 goto drop_rdata_kref;
 826         }
 827
 828         wait_for_completion(&io_req->abts_done);
 829
 830         if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS ||
 831             io_req->event == QEDF_IOREQ_EV_ABORT_FAILED ||
 832             io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) {
 833                 /*
 834                  * If we get a reponse to the abort this is success from
 835                  * the perspective that all references to the command have
 836                  * been removed from the driver and firmware
 837                  */
 838                 rc = SUCCESS;
 839         } else {
 840                 /* If the abort and cleanup failed then return a failure */
 841                 rc = FAILED;
 842         }
 843
 844         if (rc == SUCCESS)
 845                 QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n",
 846                           io_req->xid);
 847         else
 848                 QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n",
 849                           io_req->xid);
 850
 851 drop_rdata_kref:
 852         kref_put(&rdata->kref, fc_rport_destroy);
 853 out:
 854         if (got_ref)
 855                 kref_put(&io_req->refcount, qedf_release_cmd);
 856         return rc;
 857 }
 858
 859 static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd)
 860 {
 861         QEDF_ERR(NULL, "%d:0:%d:%lld: TARGET RESET Issued...",
 862                  sc_cmd->device->host->host_no, sc_cmd->device->id,
 863                  sc_cmd->device->lun);
 864         return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET);
 865 }
 866
 867 static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd)
 868 {
 869         QEDF_ERR(NULL, "%d:0:%d:%lld: LUN RESET Issued... ",
 870                  sc_cmd->device->host->host_no, sc_cmd->device->id,
 871                  sc_cmd->device->lun);
 872         return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET);
 873 }
 874
 875 bool qedf_wait_for_upload(struct qedf_ctx *qedf)
 876 {
 877         struct qedf_rport *fcport = NULL;
 878         int wait_cnt = 120;
 879
 880         while (wait_cnt--) {
 881                 if (atomic_read(&qedf->num_offloads))
 882                         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 883                                   "Waiting for all uploads to complete num_offloads = 0x%x.\n",
 884                                   atomic_read(&qedf->num_offloads));
 885                 else
 886                         return true;
 887                 msleep(500);
 888         }
 889
 890         rcu_read_lock();
 891         list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
 892                 if (fcport && test_bit(QEDF_RPORT_SESSION_READY,
 893                                        &fcport->flags)) {
 894                         if (fcport->rdata)
 895                                 QEDF_ERR(&qedf->dbg_ctx,
 896                                          "Waiting for fcport %p portid=%06x.\n",
 897                                          fcport, fcport->rdata->ids.port_id);
 898                         } else {
 899                                 QEDF_ERR(&qedf->dbg_ctx,
 900                                          "Waiting for fcport %p.\n", fcport);
 901                         }
 902         }
 903         rcu_read_unlock();
 904         return false;
 905
 906 }
 907
 908 /* Performs soft reset of qedf_ctx by simulating a link down/up */
 909 void qedf_ctx_soft_reset(struct fc_lport *lport)
 910 {
 911         struct qedf_ctx *qedf;
 912         struct qed_link_output if_link;
 913
 914         if (lport->vport) {
 915                 QEDF_ERR(NULL, "Cannot issue host reset on NPIV port.\n");
 916                 return;
 917         }
 918
 919         qedf = lport_priv(lport);
 920
 921         qedf->flogi_pending = 0;
 922         /* For host reset, essentially do a soft link up/down */
 923         atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
 924         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 925                   "Queuing link down work.\n");
 926         queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 927             0);
 928
 929         if (qedf_wait_for_upload(qedf) == false) {
 930                 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n");
 931                 WARN_ON(atomic_read(&qedf->num_offloads));
 932         }
 933
 934         /* Before setting link up query physical link state */
 935         qed_ops->common->get_link(qedf->cdev, &if_link);
 936         /* Bail if the physical link is not up */
 937         if (!if_link.link_up) {
 938                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 939                           "Physical link is not up.\n");
 940                 return;
 941         }
 942         /* Flush and wait to make sure link down is processed */
 943         flush_delayed_work(&qedf->link_update);
 944         msleep(500);
 945
 946         atomic_set(&qedf->link_state, QEDF_LINK_UP);
 947         qedf->vlan_id  = 0;
 948         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 949                   "Queue link up work.\n");
 950         queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 951             0);
 952 }
 953
 954 /* Reset the host by gracefully logging out and then logging back in */
 955 static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd)
 956 {
 957         struct fc_lport *lport;
 958         struct qedf_ctx *qedf;
 959
 960         lport = shost_priv(sc_cmd->device->host);
 961         qedf = lport_priv(lport);
 962
 963         if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN ||
 964             test_bit(QEDF_UNLOADING, &qedf->flags))
 965                 return FAILED;
 966
 967         QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued...");
 968
 969         qedf_ctx_soft_reset(lport);
 970
 971         return SUCCESS;
 972 }
 973
 974 static int qedf_slave_configure(struct scsi_device *sdev)
 975 {
 976         if (qedf_queue_depth) {
 977                 scsi_change_queue_depth(sdev, qedf_queue_depth);
 978         }
 979
 980         return 0;
 981 }
 982
 983 static struct scsi_host_template qedf_host_template = {
 984         .module         = THIS_MODULE,
 985         .name           = QEDF_MODULE_NAME,
 986         .this_id        = -1,
 987         .cmd_per_lun    = 32,
 988         .max_sectors    = 0xffff,
 989         .queuecommand   = qedf_queuecommand,
 990         .shost_attrs    = qedf_host_attrs,
 991         .eh_abort_handler       = qedf_eh_abort,
 992         .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */
 993         .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */
 994         .eh_host_reset_handler  = qedf_eh_host_reset,
 995         .slave_configure        = qedf_slave_configure,
 996         .dma_boundary = QED_HW_DMA_BOUNDARY,
 997         .sg_tablesize = QEDF_MAX_BDS_PER_CMD,
 998         .can_queue = FCOE_PARAMS_NUM_TASKS,
 999         .change_queue_depth = scsi_change_queue_depth,
1000 };
1001
1002 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen)
1003 {
1004         int rc;
1005
1006         spin_lock(&qedf_global_lock);
1007         rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global);
1008         spin_unlock(&qedf_global_lock);
1009
1010         return rc;
1011 }
1012
1013 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id)
1014 {
1015         struct qedf_rport *fcport;
1016         struct fc_rport_priv *rdata;
1017
1018         rcu_read_lock();
1019         list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
1020                 rdata = fcport->rdata;
1021                 if (rdata == NULL)
1022                         continue;
1023                 if (rdata->ids.port_id == port_id) {
1024                         rcu_read_unlock();
1025                         return fcport;
1026                 }
1027         }
1028         rcu_read_unlock();
1029
1030         /* Return NULL to caller to let them know fcport was not found */
1031         return NULL;
1032 }
1033
1034 /* Transmits an ELS frame over an offloaded session */
1035 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp)
1036 {
1037         struct fc_frame_header *fh;
1038         int rc = 0;
1039
1040         fh = fc_frame_header_get(fp);
1041         if ((fh->fh_type == FC_TYPE_ELS) &&
1042             (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
1043                 switch (fc_frame_payload_op(fp)) {
1044                 case ELS_ADISC:
1045                         qedf_send_adisc(fcport, fp);
1046                         rc = 1;
1047                         break;
1048                 }
1049         }
1050
1051         return rc;
1052 }
1053
1054 /*
1055  * qedf_xmit - qedf FCoE frame transmit function
1056  */
1057 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp)
1058 {
1059         struct fc_lport         *base_lport;
1060         struct qedf_ctx         *qedf;
1061         struct ethhdr           *eh;
1062         struct fcoe_crc_eof     *cp;
1063         struct sk_buff          *skb;
1064         struct fc_frame_header  *fh;
1065         struct fcoe_hdr         *hp;
1066         u8                      sof, eof;
1067         u32                     crc;
1068         unsigned int            hlen, tlen, elen;
1069         int                     wlen;
1070         struct fc_stats         *stats;
1071         struct fc_lport *tmp_lport;
1072         struct fc_lport *vn_port = NULL;
1073         struct qedf_rport *fcport;
1074         int rc;
1075         u16 vlan_tci = 0;
1076
1077         qedf = (struct qedf_ctx *)lport_priv(lport);
1078
1079         fh = fc_frame_header_get(fp);
1080         skb = fp_skb(fp);
1081
1082         /* Filter out traffic to other NPIV ports on the same host */
1083         if (lport->vport)
1084                 base_lport = shost_priv(vport_to_shost(lport->vport));
1085         else
1086                 base_lport = lport;
1087
1088         /* Flag if the destination is the base port */
1089         if (base_lport->port_id == ntoh24(fh->fh_d_id)) {
1090                 vn_port = base_lport;
1091         } else {
1092                 /* Got through the list of vports attached to the base_lport
1093                  * and see if we have a match with the destination address.
1094                  */
1095                 list_for_each_entry(tmp_lport, &base_lport->vports, list) {
1096                         if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) {
1097                                 vn_port = tmp_lport;
1098                                 break;
1099                         }
1100                 }
1101         }
1102         if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) {
1103                 struct fc_rport_priv *rdata = NULL;
1104
1105                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
1106                     "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id));
1107                 kfree_skb(skb);
1108                 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id));
1109                 if (rdata) {
1110                         rdata->retries = lport->max_rport_retry_count;
1111                         kref_put(&rdata->kref, fc_rport_destroy);
1112                 }
1113                 return -EINVAL;
1114         }
1115         /* End NPIV filtering */
1116
1117         if (!qedf->ctlr.sel_fcf) {
1118                 kfree_skb(skb);
1119                 return 0;
1120         }
1121
1122         if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) {
1123                 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n");
1124                 kfree_skb(skb);
1125                 return 0;
1126         }
1127
1128         if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
1129                 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n");
1130                 kfree_skb(skb);
1131                 return 0;
1132         }
1133
1134         if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
1135                 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb))
1136                         return 0;
1137         }
1138
1139         /* Check to see if this needs to be sent on an offloaded session */
1140         fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
1141
1142         if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1143                 rc = qedf_xmit_l2_frame(fcport, fp);
1144                 /*
1145                  * If the frame was successfully sent over the middle path
1146                  * then do not try to also send it over the LL2 path
1147                  */
1148                 if (rc)
1149                         return 0;
1150         }
1151
1152         sof = fr_sof(fp);
1153         eof = fr_eof(fp);
1154
1155         elen = sizeof(struct ethhdr);
1156         hlen = sizeof(struct fcoe_hdr);
1157         tlen = sizeof(struct fcoe_crc_eof);
1158         wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
1159
1160         skb->ip_summed = CHECKSUM_NONE;
1161         crc = fcoe_fc_crc(fp);
1162
1163         /* copy port crc and eof to the skb buff */
1164         if (skb_is_nonlinear(skb)) {
1165                 skb_frag_t *frag;
1166
1167                 if (qedf_get_paged_crc_eof(skb, tlen)) {
1168                         kfree_skb(skb);
1169                         return -ENOMEM;
1170                 }
1171                 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
1172                 cp = kmap_atomic(skb_frag_page(frag)) + skb_frag_off(frag);
1173         } else {
1174                 cp = skb_put(skb, tlen);
1175         }
1176
1177         memset(cp, 0, sizeof(*cp));
1178         cp->fcoe_eof = eof;
1179         cp->fcoe_crc32 = cpu_to_le32(~crc);
1180         if (skb_is_nonlinear(skb)) {
1181                 kunmap_atomic(cp);
1182                 cp = NULL;
1183         }
1184
1185
1186         /* adjust skb network/transport offsets to match mac/fcoe/port */
1187         skb_push(skb, elen + hlen);
1188         skb_reset_mac_header(skb);
1189         skb_reset_network_header(skb);
1190         skb->mac_len = elen;
1191         skb->protocol = htons(ETH_P_FCOE);
1192
1193         /*
1194          * Add VLAN tag to non-offload FCoE frame based on current stored VLAN
1195          * for FIP/FCoE traffic.
1196          */
1197         __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id);
1198
1199         /* fill up mac and fcoe headers */
1200         eh = eth_hdr(skb);
1201         eh->h_proto = htons(ETH_P_FCOE);
1202         if (qedf->ctlr.map_dest)
1203                 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
1204         else
1205                 /* insert GW address */
1206                 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr);
1207
1208         /* Set the source MAC address */
1209         ether_addr_copy(eh->h_source, qedf->data_src_addr);
1210
1211         hp = (struct fcoe_hdr *)(eh + 1);
1212         memset(hp, 0, sizeof(*hp));
1213         if (FC_FCOE_VER)
1214                 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
1215         hp->fcoe_sof = sof;
1216
1217         /*update tx stats */
1218         stats = per_cpu_ptr(lport->stats, get_cpu());
1219         stats->TxFrames++;
1220         stats->TxWords += wlen;
1221         put_cpu();
1222
1223         /* Get VLAN ID from skb for printing purposes */
1224         __vlan_hwaccel_get_tag(skb, &vlan_tci);
1225
1226         /* send down to lld */
1227         fr_dev(fp) = lport;
1228         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: "
1229             "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n",
1230             ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type,
1231             vlan_tci);
1232         if (qedf_dump_frames)
1233                 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
1234                     1, skb->data, skb->len, false);
1235         rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, 0);
1236         if (rc) {
1237                 QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n", rc);
1238                 kfree_skb(skb);
1239                 return rc;
1240         }
1241
1242         return 0;
1243 }
1244
1245 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1246 {
1247         int rval = 0;
1248         u32 *pbl;
1249         dma_addr_t page;
1250         int num_pages;
1251
1252         /* Calculate appropriate queue and PBL sizes */
1253         fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
1254         fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE);
1255         fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) *
1256             sizeof(void *);
1257         fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE;
1258
1259         fcport->sq = dma_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1260                                         &fcport->sq_dma, GFP_KERNEL);
1261         if (!fcport->sq) {
1262                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n");
1263                 rval = 1;
1264                 goto out;
1265         }
1266
1267         fcport->sq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
1268                                             fcport->sq_pbl_size,
1269                                             &fcport->sq_pbl_dma, GFP_KERNEL);
1270         if (!fcport->sq_pbl) {
1271                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n");
1272                 rval = 1;
1273                 goto out_free_sq;
1274         }
1275
1276         /* Create PBL */
1277         num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE;
1278         page = fcport->sq_dma;
1279         pbl = (u32 *)fcport->sq_pbl;
1280
1281         while (num_pages--) {
1282                 *pbl = U64_LO(page);
1283                 pbl++;
1284                 *pbl = U64_HI(page);
1285                 pbl++;
1286                 page += QEDF_PAGE_SIZE;
1287         }
1288
1289         return rval;
1290
1291 out_free_sq:
1292         dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq,
1293             fcport->sq_dma);
1294 out:
1295         return rval;
1296 }
1297
1298 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1299 {
1300         if (fcport->sq_pbl)
1301                 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size,
1302                     fcport->sq_pbl, fcport->sq_pbl_dma);
1303         if (fcport->sq)
1304                 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1305                     fcport->sq, fcport->sq_dma);
1306 }
1307
1308 static int qedf_offload_connection(struct qedf_ctx *qedf,
1309         struct qedf_rport *fcport)
1310 {
1311         struct qed_fcoe_params_offload conn_info;
1312         u32 port_id;
1313         int rval;
1314         uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe));
1315
1316         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection "
1317                    "portid=%06x.\n", fcport->rdata->ids.port_id);
1318         rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle,
1319             &fcport->fw_cid, &fcport->p_doorbell);
1320         if (rval) {
1321                 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection "
1322                            "for portid=%06x.\n", fcport->rdata->ids.port_id);
1323                 rval = 1; /* For some reason qed returns 0 on failure here */
1324                 goto out;
1325         }
1326
1327         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x "
1328                    "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id,
1329                    fcport->fw_cid, fcport->handle);
1330
1331         memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload));
1332
1333         /* Fill in the offload connection info */
1334         conn_info.sq_pbl_addr = fcport->sq_pbl_dma;
1335
1336         conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl);
1337         conn_info.sq_next_page_addr =
1338             (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8));
1339
1340         /* Need to use our FCoE MAC for the offload session */
1341         ether_addr_copy(conn_info.src_mac, qedf->data_src_addr);
1342
1343         ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr);
1344
1345         conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size;
1346         conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov;
1347         conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */
1348         conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size;
1349
1350         /* Set VLAN data */
1351         conn_info.vlan_tag = qedf->vlan_id <<
1352             FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT;
1353         conn_info.vlan_tag |=
1354             qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT;
1355         conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK <<
1356             FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT);
1357
1358         /* Set host port source id */
1359         port_id = fc_host_port_id(qedf->lport->host);
1360         fcport->sid = port_id;
1361         conn_info.s_id.addr_hi = (port_id & 0x000000FF);
1362         conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1363         conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1364
1365         conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq;
1366
1367         /* Set remote port destination id */
1368         port_id = fcport->rdata->rport->port_id;
1369         conn_info.d_id.addr_hi = (port_id & 0x000000FF);
1370         conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1371         conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1372
1373         conn_info.def_q_idx = 0; /* Default index for send queue? */
1374
1375         /* Set FC-TAPE specific flags if needed */
1376         if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) {
1377                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN,
1378                     "Enable CONF, REC for portid=%06x.\n",
1379                     fcport->rdata->ids.port_id);
1380                 conn_info.flags |= 1 <<
1381                     FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT;
1382                 conn_info.flags |=
1383                     ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
1384                     FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT;
1385         }
1386
1387         rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info);
1388         if (rval) {
1389                 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection "
1390                            "for portid=%06x.\n", fcport->rdata->ids.port_id);
1391                 goto out_free_conn;
1392         } else
1393                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload "
1394                            "succeeded portid=%06x total_sqe=%d.\n",
1395                            fcport->rdata->ids.port_id, total_sqe);
1396
1397         spin_lock_init(&fcport->rport_lock);
1398         atomic_set(&fcport->free_sqes, total_sqe);
1399         return 0;
1400 out_free_conn:
1401         qed_ops->release_conn(qedf->cdev, fcport->handle);
1402 out:
1403         return rval;
1404 }
1405
1406 #define QEDF_TERM_BUFF_SIZE             10
1407 static void qedf_upload_connection(struct qedf_ctx *qedf,
1408         struct qedf_rport *fcport)
1409 {
1410         void *term_params;
1411         dma_addr_t term_params_dma;
1412
1413         /* Term params needs to be a DMA coherent buffer as qed shared the
1414          * physical DMA address with the firmware. The buffer may be used in
1415          * the receive path so we may eventually have to move this.
1416          */
1417         term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE,
1418                 &term_params_dma, GFP_KERNEL);
1419
1420         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection "
1421                    "port_id=%06x.\n", fcport->rdata->ids.port_id);
1422
1423         qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma);
1424         qed_ops->release_conn(qedf->cdev, fcport->handle);
1425
1426         dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params,
1427             term_params_dma);
1428 }
1429
1430 static void qedf_cleanup_fcport(struct qedf_ctx *qedf,
1431         struct qedf_rport *fcport)
1432 {
1433         struct fc_rport_priv *rdata = fcport->rdata;
1434
1435         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n",
1436             fcport->rdata->ids.port_id);
1437
1438         /* Flush any remaining i/o's before we upload the connection */
1439         qedf_flush_active_ios(fcport, -1);
1440
1441         if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags))
1442                 qedf_upload_connection(qedf, fcport);
1443         qedf_free_sq(qedf, fcport);
1444         fcport->rdata = NULL;
1445         fcport->qedf = NULL;
1446         kref_put(&rdata->kref, fc_rport_destroy);
1447 }
1448
1449 /*
1450  * This event_callback is called after successful completion of libfc
1451  * initiated target login. qedf can proceed with initiating the session
1452  * establishment.
1453  */
1454 static void qedf_rport_event_handler(struct fc_lport *lport,
1455                                 struct fc_rport_priv *rdata,
1456                                 enum fc_rport_event event)
1457 {
1458         struct qedf_ctx *qedf = lport_priv(lport);
1459         struct fc_rport *rport = rdata->rport;
1460         struct fc_rport_libfc_priv *rp;
1461         struct qedf_rport *fcport;
1462         u32 port_id;
1463         int rval;
1464         unsigned long flags;
1465
1466         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, "
1467                    "port_id = 0x%x\n", event, rdata->ids.port_id);
1468
1469         switch (event) {
1470         case RPORT_EV_READY:
1471                 if (!rport) {
1472                         QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n");
1473                         break;
1474                 }
1475
1476                 rp = rport->dd_data;
1477                 fcport = (struct qedf_rport *)&rp[1];
1478                 fcport->qedf = qedf;
1479
1480                 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) {
1481                         QEDF_ERR(&(qedf->dbg_ctx), "Not offloading "
1482                             "portid=0x%x as max number of offloaded sessions "
1483                             "reached.\n", rdata->ids.port_id);
1484                         return;
1485                 }
1486
1487                 /*
1488                  * Don't try to offload the session again. Can happen when we
1489                  * get an ADISC
1490                  */
1491                 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1492                         QEDF_WARN(&(qedf->dbg_ctx), "Session already "
1493                                    "offloaded, portid=0x%x.\n",
1494                                    rdata->ids.port_id);
1495                         return;
1496                 }
1497
1498                 if (rport->port_id == FC_FID_DIR_SERV) {
1499                         /*
1500                          * qedf_rport structure doesn't exist for
1501                          * directory server.
1502                          * We should not come here, as lport will
1503                          * take care of fabric login
1504                          */
1505                         QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not "
1506                             "exist for dir server port_id=%x\n",
1507                             rdata->ids.port_id);
1508                         break;
1509                 }
1510
1511                 if (rdata->spp_type != FC_TYPE_FCP) {
1512                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1513                             "Not offloading since spp type isn't FCP\n");
1514                         break;
1515                 }
1516                 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
1517                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1518                             "Not FCP target so not offloading\n");
1519                         break;
1520                 }
1521
1522                 /* Initial reference held on entry, so this can't fail */
1523                 kref_get(&rdata->kref);
1524                 fcport->rdata = rdata;
1525                 fcport->rport = rport;
1526
1527                 rval = qedf_alloc_sq(qedf, fcport);
1528                 if (rval) {
1529                         qedf_cleanup_fcport(qedf, fcport);
1530                         break;
1531                 }
1532
1533                 /* Set device type */
1534                 if (rdata->flags & FC_RP_FLAGS_RETRY &&
1535                     rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET &&
1536                     !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) {
1537                         fcport->dev_type = QEDF_RPORT_TYPE_TAPE;
1538                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1539                             "portid=%06x is a TAPE device.\n",
1540                             rdata->ids.port_id);
1541                 } else {
1542                         fcport->dev_type = QEDF_RPORT_TYPE_DISK;
1543                 }
1544
1545                 rval = qedf_offload_connection(qedf, fcport);
1546                 if (rval) {
1547                         qedf_cleanup_fcport(qedf, fcport);
1548                         break;
1549                 }
1550
1551                 /* Add fcport to list of qedf_ctx list of offloaded ports */
1552                 spin_lock_irqsave(&qedf->hba_lock, flags);
1553                 list_add_rcu(&fcport->peers, &qedf->fcports);
1554                 spin_unlock_irqrestore(&qedf->hba_lock, flags);
1555
1556                 /*
1557                  * Set the session ready bit to let everyone know that this
1558                  * connection is ready for I/O
1559                  */
1560                 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags);
1561                 atomic_inc(&qedf->num_offloads);
1562
1563                 break;
1564         case RPORT_EV_LOGO:
1565         case RPORT_EV_FAILED:
1566         case RPORT_EV_STOP:
1567                 port_id = rdata->ids.port_id;
1568                 if (port_id == FC_FID_DIR_SERV)
1569                         break;
1570
1571                 if (rdata->spp_type != FC_TYPE_FCP) {
1572                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1573                             "No action since spp type isn't FCP\n");
1574                         break;
1575                 }
1576                 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
1577                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1578                             "Not FCP target so no action\n");
1579                         break;
1580                 }
1581
1582                 if (!rport) {
1583                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1584                             "port_id=%x - rport notcreated Yet!!\n", port_id);
1585                         break;
1586                 }
1587                 rp = rport->dd_data;
1588                 /*
1589                  * Perform session upload. Note that rdata->peers is already
1590                  * removed from disc->rports list before we get this event.
1591                  */
1592                 fcport = (struct qedf_rport *)&rp[1];
1593
1594                 spin_lock_irqsave(&fcport->rport_lock, flags);
1595                 /* Only free this fcport if it is offloaded already */
1596                 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) &&
1597                     !test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1598                     &fcport->flags)) {
1599                         set_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1600                                 &fcport->flags);
1601                         spin_unlock_irqrestore(&fcport->rport_lock, flags);
1602                         qedf_cleanup_fcport(qedf, fcport);
1603                         /*
1604                          * Remove fcport to list of qedf_ctx list of offloaded
1605                          * ports
1606                          */
1607                         spin_lock_irqsave(&qedf->hba_lock, flags);
1608                         list_del_rcu(&fcport->peers);
1609                         spin_unlock_irqrestore(&qedf->hba_lock, flags);
1610
1611                         clear_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1612                             &fcport->flags);
1613                         atomic_dec(&qedf->num_offloads);
1614                 } else {
1615                         spin_unlock_irqrestore(&fcport->rport_lock, flags);
1616                 }
1617                 break;
1618
1619         case RPORT_EV_NONE:
1620                 break;
1621         }
1622 }
1623
1624 static void qedf_abort_io(struct fc_lport *lport)
1625 {
1626         /* NO-OP but need to fill in the template */
1627 }
1628
1629 static void qedf_fcp_cleanup(struct fc_lport *lport)
1630 {
1631         /*
1632          * NO-OP but need to fill in template to prevent a NULL
1633          * function pointer dereference during link down. I/Os
1634          * will be flushed when port is uploaded.
1635          */
1636 }
1637
1638 static struct libfc_function_template qedf_lport_template = {
1639         .frame_send             = qedf_xmit,
1640         .fcp_abort_io           = qedf_abort_io,
1641         .fcp_cleanup            = qedf_fcp_cleanup,
1642         .rport_event_callback   = qedf_rport_event_handler,
1643         .elsct_send             = qedf_elsct_send,
1644 };
1645
1646 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf)
1647 {
1648         fcoe_ctlr_init(&qedf->ctlr, FIP_MODE_AUTO);
1649
1650         qedf->ctlr.send = qedf_fip_send;
1651         qedf->ctlr.get_src_addr = qedf_get_src_mac;
1652         ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac);
1653 }
1654
1655 static void qedf_setup_fdmi(struct qedf_ctx *qedf)
1656 {
1657         struct fc_lport *lport = qedf->lport;
1658         u8 buf[8];
1659         int pos;
1660         uint32_t i;
1661
1662         /*
1663          * fdmi_enabled needs to be set for libfc
1664          * to execute FDMI registration
1665          */
1666         lport->fdmi_enabled = 1;
1667
1668         /*
1669          * Setup the necessary fc_host attributes to that will be used to fill
1670          * in the FDMI information.
1671          */
1672
1673         /* Get the PCI-e Device Serial Number Capability */
1674         pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN);
1675         if (pos) {
1676                 pos += 4;
1677                 for (i = 0; i < 8; i++)
1678                         pci_read_config_byte(qedf->pdev, pos + i, &buf[i]);
1679
1680                 snprintf(fc_host_serial_number(lport->host),
1681                     FC_SERIAL_NUMBER_SIZE,
1682                     "%02X%02X%02X%02X%02X%02X%02X%02X",
1683                     buf[7], buf[6], buf[5], buf[4],
1684                     buf[3], buf[2], buf[1], buf[0]);
1685         } else
1686                 snprintf(fc_host_serial_number(lport->host),
1687                     FC_SERIAL_NUMBER_SIZE, "Unknown");
1688
1689         snprintf(fc_host_manufacturer(lport->host),
1690             FC_SERIAL_NUMBER_SIZE, "%s", "Marvell Semiconductor Inc.");
1691
1692         if (qedf->pdev->device == QL45xxx) {
1693                 snprintf(fc_host_model(lport->host),
1694                         FC_SYMBOLIC_NAME_SIZE, "%s", "QL45xxx");
1695
1696                 snprintf(fc_host_model_description(lport->host),
1697                         FC_SYMBOLIC_NAME_SIZE, "%s",
1698                         "Marvell FastLinQ QL45xxx FCoE Adapter");
1699         }
1700
1701         if (qedf->pdev->device == QL41xxx) {
1702                 snprintf(fc_host_model(lport->host),
1703                         FC_SYMBOLIC_NAME_SIZE, "%s", "QL41xxx");
1704
1705                 snprintf(fc_host_model_description(lport->host),
1706                         FC_SYMBOLIC_NAME_SIZE, "%s",
1707                         "Marvell FastLinQ QL41xxx FCoE Adapter");
1708         }
1709
1710         snprintf(fc_host_hardware_version(lport->host),
1711             FC_VERSION_STRING_SIZE, "Rev %d", qedf->pdev->revision);
1712
1713         snprintf(fc_host_driver_version(lport->host),
1714             FC_VERSION_STRING_SIZE, "%s", QEDF_VERSION);
1715
1716         snprintf(fc_host_firmware_version(lport->host),
1717             FC_VERSION_STRING_SIZE, "%d.%d.%d.%d",
1718             FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
1719             FW_ENGINEERING_VERSION);
1720
1721 }
1722
1723 static int qedf_lport_setup(struct qedf_ctx *qedf)
1724 {
1725         struct fc_lport *lport = qedf->lport;
1726
1727         lport->link_up = 0;
1728         lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1729         lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1730         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1731             FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1732         lport->boot_time = jiffies;
1733         lport->e_d_tov = 2 * 1000;
1734         lport->r_a_tov = 10 * 1000;
1735
1736         /* Set NPIV support */
1737         lport->does_npiv = 1;
1738         fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV;
1739
1740         fc_set_wwnn(lport, qedf->wwnn);
1741         fc_set_wwpn(lport, qedf->wwpn);
1742
1743         if (fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0)) {
1744                 QEDF_ERR(&qedf->dbg_ctx,
1745                          "fcoe_libfc_config failed.\n");
1746                 return -ENOMEM;
1747         }
1748
1749         /* Allocate the exchange manager */
1750         fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_PARAMS_NUM_TASKS,
1751                           0xfffe, NULL);
1752
1753         if (fc_lport_init_stats(lport))
1754                 return -ENOMEM;
1755
1756         /* Finish lport config */
1757         fc_lport_config(lport);
1758
1759         /* Set max frame size */
1760         fc_set_mfs(lport, QEDF_MFS);
1761         fc_host_maxframe_size(lport->host) = lport->mfs;
1762
1763         /* Set default dev_loss_tmo based on module parameter */
1764         fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo;
1765
1766         /* Set symbolic node name */
1767         if (qedf->pdev->device == QL45xxx)
1768                 snprintf(fc_host_symbolic_name(lport->host), 256,
1769                         "Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION);
1770
1771         if (qedf->pdev->device == QL41xxx)
1772                 snprintf(fc_host_symbolic_name(lport->host), 256,
1773                         "Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION);
1774
1775         qedf_setup_fdmi(qedf);
1776
1777         return 0;
1778 }
1779
1780 /*
1781  * NPIV functions
1782  */
1783
1784 static int qedf_vport_libfc_config(struct fc_vport *vport,
1785         struct fc_lport *lport)
1786 {
1787         lport->link_up = 0;
1788         lport->qfull = 0;
1789         lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1790         lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1791         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1792             FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1793         lport->boot_time = jiffies;
1794         lport->e_d_tov = 2 * 1000;
1795         lport->r_a_tov = 10 * 1000;
1796         lport->does_npiv = 1; /* Temporary until we add NPIV support */
1797
1798         /* Allocate stats for vport */
1799         if (fc_lport_init_stats(lport))
1800                 return -ENOMEM;
1801
1802         /* Finish lport config */
1803         fc_lport_config(lport);
1804
1805         /* offload related configuration */
1806         lport->crc_offload = 0;
1807         lport->seq_offload = 0;
1808         lport->lro_enabled = 0;
1809         lport->lro_xid = 0;
1810         lport->lso_max = 0;
1811
1812         return 0;
1813 }
1814
1815 static int qedf_vport_create(struct fc_vport *vport, bool disabled)
1816 {
1817         struct Scsi_Host *shost = vport_to_shost(vport);
1818         struct fc_lport *n_port = shost_priv(shost);
1819         struct fc_lport *vn_port;
1820         struct qedf_ctx *base_qedf = lport_priv(n_port);
1821         struct qedf_ctx *vport_qedf;
1822
1823         char buf[32];
1824         int rc = 0;
1825
1826         rc = fcoe_validate_vport_create(vport);
1827         if (rc) {
1828                 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1829                 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, "
1830                            "WWPN (0x%s) already exists.\n", buf);
1831                 return rc;
1832         }
1833
1834         if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) {
1835                 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport "
1836                            "because link is not up.\n");
1837                 return -EIO;
1838         }
1839
1840         vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx));
1841         if (!vn_port) {
1842                 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport "
1843                            "for vport.\n");
1844                 return -ENOMEM;
1845         }
1846
1847         fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1848         QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n",
1849             buf);
1850
1851         /* Copy some fields from base_qedf */
1852         vport_qedf = lport_priv(vn_port);
1853         memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx));
1854
1855         /* Set qedf data specific to this vport */
1856         vport_qedf->lport = vn_port;
1857         /* Use same hba_lock as base_qedf */
1858         vport_qedf->hba_lock = base_qedf->hba_lock;
1859         vport_qedf->pdev = base_qedf->pdev;
1860         vport_qedf->cmd_mgr = base_qedf->cmd_mgr;
1861         init_completion(&vport_qedf->flogi_compl);
1862         INIT_LIST_HEAD(&vport_qedf->fcports);
1863         INIT_DELAYED_WORK(&vport_qedf->stag_work, qedf_stag_change_work);
1864
1865         rc = qedf_vport_libfc_config(vport, vn_port);
1866         if (rc) {
1867                 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory "
1868                     "for lport stats.\n");
1869                 goto err;
1870         }
1871
1872         fc_set_wwnn(vn_port, vport->node_name);
1873         fc_set_wwpn(vn_port, vport->port_name);
1874         vport_qedf->wwnn = vn_port->wwnn;
1875         vport_qedf->wwpn = vn_port->wwpn;
1876
1877         vn_port->host->transportt = qedf_fc_vport_transport_template;
1878         vn_port->host->can_queue = FCOE_PARAMS_NUM_TASKS;
1879         vn_port->host->max_lun = qedf_max_lun;
1880         vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD;
1881         vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN;
1882
1883         rc = scsi_add_host(vn_port->host, &vport->dev);
1884         if (rc) {
1885                 QEDF_WARN(&base_qedf->dbg_ctx,
1886                           "Error adding Scsi_Host rc=0x%x.\n", rc);
1887                 goto err;
1888         }
1889
1890         /* Set default dev_loss_tmo based on module parameter */
1891         fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo;
1892
1893         /* Init libfc stuffs */
1894         memcpy(&vn_port->tt, &qedf_lport_template,
1895                 sizeof(qedf_lport_template));
1896         fc_exch_init(vn_port);
1897         fc_elsct_init(vn_port);
1898         fc_lport_init(vn_port);
1899         fc_disc_init(vn_port);
1900         fc_disc_config(vn_port, vn_port);
1901
1902
1903         /* Allocate the exchange manager */
1904         shost = vport_to_shost(vport);
1905         n_port = shost_priv(shost);
1906         fc_exch_mgr_list_clone(n_port, vn_port);
1907
1908         /* Set max frame size */
1909         fc_set_mfs(vn_port, QEDF_MFS);
1910
1911         fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN;
1912
1913         if (disabled) {
1914                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1915         } else {
1916                 vn_port->boot_time = jiffies;
1917                 fc_fabric_login(vn_port);
1918                 fc_vport_setlink(vn_port);
1919         }
1920
1921         /* Set symbolic node name */
1922         if (base_qedf->pdev->device == QL45xxx)
1923                 snprintf(fc_host_symbolic_name(vn_port->host), 256,
1924                          "Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION);
1925
1926         if (base_qedf->pdev->device == QL41xxx)
1927                 snprintf(fc_host_symbolic_name(vn_port->host), 256,
1928                          "Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION);
1929
1930         /* Set supported speed */
1931         fc_host_supported_speeds(vn_port->host) = n_port->link_supported_speeds;
1932
1933         /* Set speed */
1934         vn_port->link_speed = n_port->link_speed;
1935
1936         /* Set port type */
1937         fc_host_port_type(vn_port->host) = FC_PORTTYPE_NPIV;
1938
1939         /* Set maxframe size */
1940         fc_host_maxframe_size(vn_port->host) = n_port->mfs;
1941
1942         QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n",
1943                    vn_port);
1944
1945         /* Set up debug context for vport */
1946         vport_qedf->dbg_ctx.host_no = vn_port->host->host_no;
1947         vport_qedf->dbg_ctx.pdev = base_qedf->pdev;
1948
1949         return 0;
1950
1951 err:
1952         scsi_host_put(vn_port->host);
1953         return rc;
1954 }
1955
1956 static int qedf_vport_destroy(struct fc_vport *vport)
1957 {
1958         struct Scsi_Host *shost = vport_to_shost(vport);
1959         struct fc_lport *n_port = shost_priv(shost);
1960         struct fc_lport *vn_port = vport->dd_data;
1961         struct qedf_ctx *qedf = lport_priv(vn_port);
1962
1963         if (!qedf) {
1964                 QEDF_ERR(NULL, "qedf is NULL.\n");
1965                 goto out;
1966         }
1967
1968         /* Set unloading bit on vport qedf_ctx to prevent more I/O */
1969         set_bit(QEDF_UNLOADING, &qedf->flags);
1970
1971         mutex_lock(&n_port->lp_mutex);
1972         list_del(&vn_port->list);
1973         mutex_unlock(&n_port->lp_mutex);
1974
1975         fc_fabric_logoff(vn_port);
1976         fc_lport_destroy(vn_port);
1977
1978         /* Detach from scsi-ml */
1979         fc_remove_host(vn_port->host);
1980         scsi_remove_host(vn_port->host);
1981
1982         /*
1983          * Only try to release the exchange manager if the vn_port
1984          * configuration is complete.
1985          */
1986         if (vn_port->state == LPORT_ST_READY)
1987                 fc_exch_mgr_free(vn_port);
1988
1989         /* Free memory used by statistical counters */
1990         fc_lport_free_stats(vn_port);
1991
1992         /* Release Scsi_Host */
1993         scsi_host_put(vn_port->host);
1994
1995 out:
1996         return 0;
1997 }
1998
1999 static int qedf_vport_disable(struct fc_vport *vport, bool disable)
2000 {
2001         struct fc_lport *lport = vport->dd_data;
2002
2003         if (disable) {
2004                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
2005                 fc_fabric_logoff(lport);
2006         } else {
2007                 lport->boot_time = jiffies;
2008                 fc_fabric_login(lport);
2009                 fc_vport_setlink(lport);
2010         }
2011         return 0;
2012 }
2013
2014 /*
2015  * During removal we need to wait for all the vports associated with a port
2016  * to be destroyed so we avoid a race condition where libfc is still trying
2017  * to reap vports while the driver remove function has already reaped the
2018  * driver contexts associated with the physical port.
2019  */
2020 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf)
2021 {
2022         struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host);
2023
2024         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
2025             "Entered.\n");
2026         while (fc_host->npiv_vports_inuse > 0) {
2027                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
2028                     "Waiting for all vports to be reaped.\n");
2029                 msleep(1000);
2030         }
2031 }
2032
2033 /**
2034  * qedf_fcoe_reset - Resets the fcoe
2035  *
2036  * @shost: shost the reset is from
2037  *
2038  * Returns: always 0
2039  */
2040 static int qedf_fcoe_reset(struct Scsi_Host *shost)
2041 {
2042         struct fc_lport *lport = shost_priv(shost);
2043
2044         qedf_ctx_soft_reset(lport);
2045         return 0;
2046 }
2047
2048 static void qedf_get_host_port_id(struct Scsi_Host *shost)
2049 {
2050         struct fc_lport *lport = shost_priv(shost);
2051
2052         fc_host_port_id(shost) = lport->port_id;
2053 }
2054
2055 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host
2056         *shost)
2057 {
2058         struct fc_host_statistics *qedf_stats;
2059         struct fc_lport *lport = shost_priv(shost);
2060         struct qedf_ctx *qedf = lport_priv(lport);
2061         struct qed_fcoe_stats *fw_fcoe_stats;
2062
2063         qedf_stats = fc_get_host_stats(shost);
2064
2065         /* We don't collect offload stats for specific NPIV ports */
2066         if (lport->vport)
2067                 goto out;
2068
2069         fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL);
2070         if (!fw_fcoe_stats) {
2071                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for "
2072                     "fw_fcoe_stats.\n");
2073                 goto out;
2074         }
2075
2076         mutex_lock(&qedf->stats_mutex);
2077
2078         /* Query firmware for offload stats */
2079         qed_ops->get_stats(qedf->cdev, fw_fcoe_stats);
2080
2081         /*
2082          * The expectation is that we add our offload stats to the stats
2083          * being maintained by libfc each time the fc_get_host_status callback
2084          * is invoked. The additions are not carried over for each call to
2085          * the fc_get_host_stats callback.
2086          */
2087         qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt +
2088             fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt +
2089             fw_fcoe_stats->fcoe_tx_other_pkt_cnt;
2090         qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt +
2091             fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt +
2092             fw_fcoe_stats->fcoe_rx_other_pkt_cnt;
2093         qedf_stats->fcp_input_megabytes +=
2094             do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000);
2095         qedf_stats->fcp_output_megabytes +=
2096             do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000);
2097         qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4;
2098         qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4;
2099         qedf_stats->invalid_crc_count +=
2100             fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt;
2101         qedf_stats->dumped_frames =
2102             fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
2103         qedf_stats->error_frames +=
2104             fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
2105         qedf_stats->fcp_input_requests += qedf->input_requests;
2106         qedf_stats->fcp_output_requests += qedf->output_requests;
2107         qedf_stats->fcp_control_requests += qedf->control_requests;
2108         qedf_stats->fcp_packet_aborts += qedf->packet_aborts;
2109         qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures;
2110
2111         mutex_unlock(&qedf->stats_mutex);
2112         kfree(fw_fcoe_stats);
2113 out:
2114         return qedf_stats;
2115 }
2116
2117 static struct fc_function_template qedf_fc_transport_fn = {
2118         .show_host_node_name = 1,
2119         .show_host_port_name = 1,
2120         .show_host_supported_classes = 1,
2121         .show_host_supported_fc4s = 1,
2122         .show_host_active_fc4s = 1,
2123         .show_host_maxframe_size = 1,
2124
2125         .get_host_port_id = qedf_get_host_port_id,
2126         .show_host_port_id = 1,
2127         .show_host_supported_speeds = 1,
2128         .get_host_speed = fc_get_host_speed,
2129         .show_host_speed = 1,
2130         .show_host_port_type = 1,
2131         .get_host_port_state = fc_get_host_port_state,
2132         .show_host_port_state = 1,
2133         .show_host_symbolic_name = 1,
2134
2135         /*
2136          * Tell FC transport to allocate enough space to store the backpointer
2137          * for the associate qedf_rport struct.
2138          */
2139         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2140                                 sizeof(struct qedf_rport)),
2141         .show_rport_maxframe_size = 1,
2142         .show_rport_supported_classes = 1,
2143         .show_host_fabric_name = 1,
2144         .show_starget_node_name = 1,
2145         .show_starget_port_name = 1,
2146         .show_starget_port_id = 1,
2147         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2148         .show_rport_dev_loss_tmo = 1,
2149         .get_fc_host_stats = qedf_fc_get_host_stats,
2150         .issue_fc_host_lip = qedf_fcoe_reset,
2151         .vport_create = qedf_vport_create,
2152         .vport_delete = qedf_vport_destroy,
2153         .vport_disable = qedf_vport_disable,
2154         .bsg_request = fc_lport_bsg_request,
2155 };
2156
2157 static struct fc_function_template qedf_fc_vport_transport_fn = {
2158         .show_host_node_name = 1,
2159         .show_host_port_name = 1,
2160         .show_host_supported_classes = 1,
2161         .show_host_supported_fc4s = 1,
2162         .show_host_active_fc4s = 1,
2163         .show_host_maxframe_size = 1,
2164         .show_host_port_id = 1,
2165         .show_host_supported_speeds = 1,
2166         .get_host_speed = fc_get_host_speed,
2167         .show_host_speed = 1,
2168         .show_host_port_type = 1,
2169         .get_host_port_state = fc_get_host_port_state,
2170         .show_host_port_state = 1,
2171         .show_host_symbolic_name = 1,
2172         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2173                                 sizeof(struct qedf_rport)),
2174         .show_rport_maxframe_size = 1,
2175         .show_rport_supported_classes = 1,
2176         .show_host_fabric_name = 1,
2177         .show_starget_node_name = 1,
2178         .show_starget_port_name = 1,
2179         .show_starget_port_id = 1,
2180         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2181         .show_rport_dev_loss_tmo = 1,
2182         .get_fc_host_stats = fc_get_host_stats,
2183         .issue_fc_host_lip = qedf_fcoe_reset,
2184         .bsg_request = fc_lport_bsg_request,
2185 };
2186
2187 static bool qedf_fp_has_work(struct qedf_fastpath *fp)
2188 {
2189         struct qedf_ctx *qedf = fp->qedf;
2190         struct global_queue *que;
2191         struct qed_sb_info *sb_info = fp->sb_info;
2192         struct status_block_e4 *sb = sb_info->sb_virt;
2193         u16 prod_idx;
2194
2195         /* Get the pointer to the global CQ this completion is on */
2196         que = qedf->global_queues[fp->sb_id];
2197
2198         /* Be sure all responses have been written to PI */
2199         rmb();
2200
2201         /* Get the current firmware producer index */
2202         prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
2203
2204         return (que->cq_prod_idx != prod_idx);
2205 }
2206
2207 /*
2208  * Interrupt handler code.
2209  */
2210
2211 /* Process completion queue and copy CQE contents for deferred processesing
2212  *
2213  * Return true if we should wake the I/O thread, false if not.
2214  */
2215 static bool qedf_process_completions(struct qedf_fastpath *fp)
2216 {
2217         struct qedf_ctx *qedf = fp->qedf;
2218         struct qed_sb_info *sb_info = fp->sb_info;
2219         struct status_block_e4 *sb = sb_info->sb_virt;
2220         struct global_queue *que;
2221         u16 prod_idx;
2222         struct fcoe_cqe *cqe;
2223         struct qedf_io_work *io_work;
2224         int num_handled = 0;
2225         unsigned int cpu;
2226         struct qedf_ioreq *io_req = NULL;
2227         u16 xid;
2228         u16 new_cqes;
2229         u32 comp_type;
2230
2231         /* Get the current firmware producer index */
2232         prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
2233
2234         /* Get the pointer to the global CQ this completion is on */
2235         que = qedf->global_queues[fp->sb_id];
2236
2237         /* Calculate the amount of new elements since last processing */
2238         new_cqes = (prod_idx >= que->cq_prod_idx) ?
2239             (prod_idx - que->cq_prod_idx) :
2240             0x10000 - que->cq_prod_idx + prod_idx;
2241
2242         /* Save producer index */
2243         que->cq_prod_idx = prod_idx;
2244
2245         while (new_cqes) {
2246                 fp->completions++;
2247                 num_handled++;
2248                 cqe = &que->cq[que->cq_cons_idx];
2249
2250                 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2251                     FCOE_CQE_CQE_TYPE_MASK;
2252
2253                 /*
2254                  * Process unsolicited CQEs directly in the interrupt handler
2255                  * sine we need the fastpath ID
2256                  */
2257                 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) {
2258                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL,
2259                            "Unsolicated CQE.\n");
2260                         qedf_process_unsol_compl(qedf, fp->sb_id, cqe);
2261                         /*
2262                          * Don't add a work list item.  Increment consumer
2263                          * consumer index and move on.
2264                          */
2265                         goto inc_idx;
2266                 }
2267
2268                 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2269                 io_req = &qedf->cmd_mgr->cmds[xid];
2270
2271                 /*
2272                  * Figure out which percpu thread we should queue this I/O
2273                  * on.
2274                  */
2275                 if (!io_req)
2276                         /* If there is not io_req assocated with this CQE
2277                          * just queue it on CPU 0
2278                          */
2279                         cpu = 0;
2280                 else {
2281                         cpu = io_req->cpu;
2282                         io_req->int_cpu = smp_processor_id();
2283                 }
2284
2285                 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC);
2286                 if (!io_work) {
2287                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate "
2288                                    "work for I/O completion.\n");
2289                         continue;
2290                 }
2291                 memset(io_work, 0, sizeof(struct qedf_io_work));
2292
2293                 INIT_WORK(&io_work->work, qedf_fp_io_handler);
2294
2295                 /* Copy contents of CQE for deferred processing */
2296                 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe));
2297
2298                 io_work->qedf = fp->qedf;
2299                 io_work->fp = NULL; /* Only used for unsolicited frames */
2300
2301                 queue_work_on(cpu, qedf_io_wq, &io_work->work);
2302
2303 inc_idx:
2304                 que->cq_cons_idx++;
2305                 if (que->cq_cons_idx == fp->cq_num_entries)
2306                         que->cq_cons_idx = 0;
2307                 new_cqes--;
2308         }
2309
2310         return true;
2311 }
2312
2313
2314 /* MSI-X fastpath handler code */
2315 static irqreturn_t qedf_msix_handler(int irq, void *dev_id)
2316 {
2317         struct qedf_fastpath *fp = dev_id;
2318
2319         if (!fp) {
2320                 QEDF_ERR(NULL, "fp is null.\n");
2321                 return IRQ_HANDLED;
2322         }
2323         if (!fp->sb_info) {
2324                 QEDF_ERR(NULL, "fp->sb_info in null.");
2325                 return IRQ_HANDLED;
2326         }
2327
2328         /*
2329          * Disable interrupts for this status block while we process new
2330          * completions
2331          */
2332         qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/);
2333
2334         while (1) {
2335                 qedf_process_completions(fp);
2336
2337                 if (qedf_fp_has_work(fp) == 0) {
2338                         /* Update the sb information */
2339                         qed_sb_update_sb_idx(fp->sb_info);
2340
2341                         /* Check for more work */
2342                         rmb();
2343
2344                         if (qedf_fp_has_work(fp) == 0) {
2345                                 /* Re-enable interrupts */
2346                                 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
2347                                 return IRQ_HANDLED;
2348                         }
2349                 }
2350         }
2351
2352         /* Do we ever want to break out of above loop? */
2353         return IRQ_HANDLED;
2354 }
2355
2356 /* simd handler for MSI/INTa */
2357 static void qedf_simd_int_handler(void *cookie)
2358 {
2359         /* Cookie is qedf_ctx struct */
2360         struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2361
2362         QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf);
2363 }
2364
2365 #define QEDF_SIMD_HANDLER_NUM           0
2366 static void qedf_sync_free_irqs(struct qedf_ctx *qedf)
2367 {
2368         int i;
2369         u16 vector_idx = 0;
2370         u32 vector;
2371
2372         if (qedf->int_info.msix_cnt) {
2373                 for (i = 0; i < qedf->int_info.used_cnt; i++) {
2374                         vector_idx = i * qedf->dev_info.common.num_hwfns +
2375                                 qed_ops->common->get_affin_hwfn_idx(qedf->cdev);
2376                         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
2377                                   "Freeing IRQ #%d vector_idx=%d.\n",
2378                                   i, vector_idx);
2379                         vector = qedf->int_info.msix[vector_idx].vector;
2380                         synchronize_irq(vector);
2381                         irq_set_affinity_hint(vector, NULL);
2382                         irq_set_affinity_notifier(vector, NULL);
2383                         free_irq(vector, &qedf->fp_array[i]);
2384                 }
2385         } else
2386                 qed_ops->common->simd_handler_clean(qedf->cdev,
2387                     QEDF_SIMD_HANDLER_NUM);
2388
2389         qedf->int_info.used_cnt = 0;
2390         qed_ops->common->set_fp_int(qedf->cdev, 0);
2391 }
2392
2393 static int qedf_request_msix_irq(struct qedf_ctx *qedf)
2394 {
2395         int i, rc, cpu;
2396         u16 vector_idx = 0;
2397         u32 vector;
2398
2399         cpu = cpumask_first(cpu_online_mask);
2400         for (i = 0; i < qedf->num_queues; i++) {
2401                 vector_idx = i * qedf->dev_info.common.num_hwfns +
2402                         qed_ops->common->get_affin_hwfn_idx(qedf->cdev);
2403                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
2404                           "Requesting IRQ #%d vector_idx=%d.\n",
2405                           i, vector_idx);
2406                 vector = qedf->int_info.msix[vector_idx].vector;
2407                 rc = request_irq(vector, qedf_msix_handler, 0, "qedf",
2408                                  &qedf->fp_array[i]);
2409
2410                 if (rc) {
2411                         QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n");
2412                         qedf_sync_free_irqs(qedf);
2413                         return rc;
2414                 }
2415
2416                 qedf->int_info.used_cnt++;
2417                 rc = irq_set_affinity_hint(vector, get_cpu_mask(cpu));
2418                 cpu = cpumask_next(cpu, cpu_online_mask);
2419         }
2420
2421         return 0;
2422 }
2423
2424 static int qedf_setup_int(struct qedf_ctx *qedf)
2425 {
2426         int rc = 0;
2427
2428         /*
2429          * Learn interrupt configuration
2430          */
2431         rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus());
2432         if (rc <= 0)
2433                 return 0;
2434
2435         rc  = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info);
2436         if (rc)
2437                 return 0;
2438
2439         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = "
2440                    "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt,
2441                    num_online_cpus());
2442
2443         if (qedf->int_info.msix_cnt)
2444                 return qedf_request_msix_irq(qedf);
2445
2446         qed_ops->common->simd_handler_config(qedf->cdev, &qedf,
2447             QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler);
2448         qedf->int_info.used_cnt = 1;
2449
2450         QEDF_ERR(&qedf->dbg_ctx,
2451                  "Cannot load driver due to a lack of MSI-X vectors.\n");
2452         return -EINVAL;
2453 }
2454
2455 /* Main function for libfc frame reception */
2456 static void qedf_recv_frame(struct qedf_ctx *qedf,
2457         struct sk_buff *skb)
2458 {
2459         u32 fr_len;
2460         struct fc_lport *lport;
2461         struct fc_frame_header *fh;
2462         struct fcoe_crc_eof crc_eof;
2463         struct fc_frame *fp;
2464         u8 *mac = NULL;
2465         u8 *dest_mac = NULL;
2466         struct fcoe_hdr *hp;
2467         struct qedf_rport *fcport;
2468         struct fc_lport *vn_port;
2469         u32 f_ctl;
2470
2471         lport = qedf->lport;
2472         if (lport == NULL || lport->state == LPORT_ST_DISABLED) {
2473                 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n");
2474                 kfree_skb(skb);
2475                 return;
2476         }
2477
2478         if (skb_is_nonlinear(skb))
2479                 skb_linearize(skb);
2480         mac = eth_hdr(skb)->h_source;
2481         dest_mac = eth_hdr(skb)->h_dest;
2482
2483         /* Pull the header */
2484         hp = (struct fcoe_hdr *)skb->data;
2485         fh = (struct fc_frame_header *) skb_transport_header(skb);
2486         skb_pull(skb, sizeof(struct fcoe_hdr));
2487         fr_len = skb->len - sizeof(struct fcoe_crc_eof);
2488
2489         fp = (struct fc_frame *)skb;
2490         fc_frame_init(fp);
2491         fr_dev(fp) = lport;
2492         fr_sof(fp) = hp->fcoe_sof;
2493         if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
2494                 QEDF_INFO(NULL, QEDF_LOG_LL2, "skb_copy_bits failed.\n");
2495                 kfree_skb(skb);
2496                 return;
2497         }
2498         fr_eof(fp) = crc_eof.fcoe_eof;
2499         fr_crc(fp) = crc_eof.fcoe_crc32;
2500         if (pskb_trim(skb, fr_len)) {
2501                 QEDF_INFO(NULL, QEDF_LOG_LL2, "pskb_trim failed.\n");
2502                 kfree_skb(skb);
2503                 return;
2504         }
2505
2506         fh = fc_frame_header_get(fp);
2507
2508         /*
2509          * Invalid frame filters.
2510          */
2511
2512         if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
2513             fh->fh_type == FC_TYPE_FCP) {
2514                 /* Drop FCP data. We dont this in L2 path */
2515                 kfree_skb(skb);
2516                 return;
2517         }
2518         if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
2519             fh->fh_type == FC_TYPE_ELS) {
2520                 switch (fc_frame_payload_op(fp)) {
2521                 case ELS_LOGO:
2522                         if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
2523                                 /* drop non-FIP LOGO */
2524                                 kfree_skb(skb);
2525                                 return;
2526                         }
2527                         break;
2528                 }
2529         }
2530
2531         if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
2532                 /* Drop incoming ABTS */
2533                 kfree_skb(skb);
2534                 return;
2535         }
2536
2537         if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
2538                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2539                     "FC frame d_id mismatch with MAC %pM.\n", dest_mac);
2540                 kfree_skb(skb);
2541                 return;
2542         }
2543
2544         if (qedf->ctlr.state) {
2545                 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) {
2546                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2547                             "Wrong source address: mac:%pM dest_addr:%pM.\n",
2548                             mac, qedf->ctlr.dest_addr);
2549                         kfree_skb(skb);
2550                         return;
2551                 }
2552         }
2553
2554         vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
2555
2556         /*
2557          * If the destination ID from the frame header does not match what we
2558          * have on record for lport and the search for a NPIV port came up
2559          * empty then this is not addressed to our port so simply drop it.
2560          */
2561         if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
2562                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2563                           "Dropping frame due to destination mismatch: lport->port_id=0x%x fh->d_id=0x%x.\n",
2564                           lport->port_id, ntoh24(fh->fh_d_id));
2565                 kfree_skb(skb);
2566                 return;
2567         }
2568
2569         f_ctl = ntoh24(fh->fh_f_ctl);
2570         if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) &&
2571             (f_ctl & FC_FC_EX_CTX)) {
2572                 /* Drop incoming ABTS response that has both SEQ/EX CTX set */
2573                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2574                           "Dropping ABTS response as both SEQ/EX CTX set.\n");
2575                 kfree_skb(skb);
2576                 return;
2577         }
2578
2579         /*
2580          * If a connection is uploading, drop incoming FCoE frames as there
2581          * is a small window where we could try to return a frame while libfc
2582          * is trying to clean things up.
2583          */
2584
2585         /* Get fcport associated with d_id if it exists */
2586         fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
2587
2588         if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
2589             &fcport->flags)) {
2590                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2591                     "Connection uploading, dropping fp=%p.\n", fp);
2592                 kfree_skb(skb);
2593                 return;
2594         }
2595
2596         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: "
2597             "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp,
2598             ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl,
2599             fh->fh_type);
2600         if (qedf_dump_frames)
2601                 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
2602                     1, skb->data, skb->len, false);
2603         fc_exch_recv(lport, fp);
2604 }
2605
2606 static void qedf_ll2_process_skb(struct work_struct *work)
2607 {
2608         struct qedf_skb_work *skb_work =
2609             container_of(work, struct qedf_skb_work, work);
2610         struct qedf_ctx *qedf = skb_work->qedf;
2611         struct sk_buff *skb = skb_work->skb;
2612         struct ethhdr *eh;
2613
2614         if (!qedf) {
2615                 QEDF_ERR(NULL, "qedf is NULL\n");
2616                 goto err_out;
2617         }
2618
2619         eh = (struct ethhdr *)skb->data;
2620
2621         /* Undo VLAN encapsulation */
2622         if (eh->h_proto == htons(ETH_P_8021Q)) {
2623                 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
2624                 eh = skb_pull(skb, VLAN_HLEN);
2625                 skb_reset_mac_header(skb);
2626         }
2627
2628         /*
2629          * Process either a FIP frame or FCoE frame based on the
2630          * protocol value.  If it's not either just drop the
2631          * frame.
2632          */
2633         if (eh->h_proto == htons(ETH_P_FIP)) {
2634                 qedf_fip_recv(qedf, skb);
2635                 goto out;
2636         } else if (eh->h_proto == htons(ETH_P_FCOE)) {
2637                 __skb_pull(skb, ETH_HLEN);
2638                 qedf_recv_frame(qedf, skb);
2639                 goto out;
2640         } else
2641                 goto err_out;
2642
2643 err_out:
2644         kfree_skb(skb);
2645 out:
2646         kfree(skb_work);
2647         return;
2648 }
2649
2650 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb,
2651         u32 arg1, u32 arg2)
2652 {
2653         struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2654         struct qedf_skb_work *skb_work;
2655
2656         if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
2657                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2658                           "Dropping frame as link state is down.\n");
2659                 kfree_skb(skb);
2660                 return 0;
2661         }
2662
2663         skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC);
2664         if (!skb_work) {
2665                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so "
2666                            "dropping frame.\n");
2667                 kfree_skb(skb);
2668                 return 0;
2669         }
2670
2671         INIT_WORK(&skb_work->work, qedf_ll2_process_skb);
2672         skb_work->skb = skb;
2673         skb_work->qedf = qedf;
2674         queue_work(qedf->ll2_recv_wq, &skb_work->work);
2675
2676         return 0;
2677 }
2678
2679 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = {
2680         .rx_cb = qedf_ll2_rx,
2681         .tx_cb = NULL,
2682 };
2683
2684 /* Main thread to process I/O completions */
2685 void qedf_fp_io_handler(struct work_struct *work)
2686 {
2687         struct qedf_io_work *io_work =
2688             container_of(work, struct qedf_io_work, work);
2689         u32 comp_type;
2690
2691         /*
2692          * Deferred part of unsolicited CQE sends
2693          * frame to libfc.
2694          */
2695         comp_type = (io_work->cqe.cqe_data >>
2696             FCOE_CQE_CQE_TYPE_SHIFT) &
2697             FCOE_CQE_CQE_TYPE_MASK;
2698         if (comp_type == FCOE_UNSOLIC_CQE_TYPE &&
2699             io_work->fp)
2700                 fc_exch_recv(io_work->qedf->lport, io_work->fp);
2701         else
2702                 qedf_process_cqe(io_work->qedf, &io_work->cqe);
2703
2704         kfree(io_work);
2705 }
2706
2707 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf,
2708         struct qed_sb_info *sb_info, u16 sb_id)
2709 {
2710         struct status_block_e4 *sb_virt;
2711         dma_addr_t sb_phys;
2712         int ret;
2713
2714         sb_virt = dma_alloc_coherent(&qedf->pdev->dev,
2715             sizeof(struct status_block_e4), &sb_phys, GFP_KERNEL);
2716
2717         if (!sb_virt) {
2718                 QEDF_ERR(&qedf->dbg_ctx,
2719                          "Status block allocation failed for id = %d.\n",
2720                          sb_id);
2721                 return -ENOMEM;
2722         }
2723
2724         ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys,
2725             sb_id, QED_SB_TYPE_STORAGE);
2726
2727         if (ret) {
2728                 QEDF_ERR(&qedf->dbg_ctx,
2729                          "Status block initialization failed (0x%x) for id = %d.\n",
2730                          ret, sb_id);
2731                 return ret;
2732         }
2733
2734         return 0;
2735 }
2736
2737 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info)
2738 {
2739         if (sb_info->sb_virt)
2740                 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt),
2741                     (void *)sb_info->sb_virt, sb_info->sb_phys);
2742 }
2743
2744 static void qedf_destroy_sb(struct qedf_ctx *qedf)
2745 {
2746         int id;
2747         struct qedf_fastpath *fp = NULL;
2748
2749         for (id = 0; id < qedf->num_queues; id++) {
2750                 fp = &(qedf->fp_array[id]);
2751                 if (fp->sb_id == QEDF_SB_ID_NULL)
2752                         break;
2753                 qedf_free_sb(qedf, fp->sb_info);
2754                 kfree(fp->sb_info);
2755         }
2756         kfree(qedf->fp_array);
2757 }
2758
2759 static int qedf_prepare_sb(struct qedf_ctx *qedf)
2760 {
2761         int id;
2762         struct qedf_fastpath *fp;
2763         int ret;
2764
2765         qedf->fp_array =
2766             kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath),
2767                 GFP_KERNEL);
2768
2769         if (!qedf->fp_array) {
2770                 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation "
2771                           "failed.\n");
2772                 return -ENOMEM;
2773         }
2774
2775         for (id = 0; id < qedf->num_queues; id++) {
2776                 fp = &(qedf->fp_array[id]);
2777                 fp->sb_id = QEDF_SB_ID_NULL;
2778                 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL);
2779                 if (!fp->sb_info) {
2780                         QEDF_ERR(&(qedf->dbg_ctx), "SB info struct "
2781                                   "allocation failed.\n");
2782                         goto err;
2783                 }
2784                 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id);
2785                 if (ret) {
2786                         QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and "
2787                                   "initialization failed.\n");
2788                         goto err;
2789                 }
2790                 fp->sb_id = id;
2791                 fp->qedf = qedf;
2792                 fp->cq_num_entries =
2793                     qedf->global_queues[id]->cq_mem_size /
2794                     sizeof(struct fcoe_cqe);
2795         }
2796 err:
2797         return 0;
2798 }
2799
2800 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe)
2801 {
2802         u16 xid;
2803         struct qedf_ioreq *io_req;
2804         struct qedf_rport *fcport;
2805         u32 comp_type;
2806         u8 io_comp_type;
2807         unsigned long flags;
2808
2809         comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2810             FCOE_CQE_CQE_TYPE_MASK;
2811
2812         xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2813         io_req = &qedf->cmd_mgr->cmds[xid];
2814
2815         /* Completion not for a valid I/O anymore so just return */
2816         if (!io_req) {
2817                 QEDF_ERR(&qedf->dbg_ctx,
2818                          "io_req is NULL for xid=0x%x.\n", xid);
2819                 return;
2820         }
2821
2822         fcport = io_req->fcport;
2823
2824         if (fcport == NULL) {
2825                 QEDF_ERR(&qedf->dbg_ctx,
2826                          "fcport is NULL for xid=0x%x io_req=%p.\n",
2827                          xid, io_req);
2828                 return;
2829         }
2830
2831         /*
2832          * Check that fcport is offloaded.  If it isn't then the spinlock
2833          * isn't valid and shouldn't be taken. We should just return.
2834          */
2835         if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
2836                 QEDF_ERR(&qedf->dbg_ctx,
2837                          "Session not offloaded yet, fcport = %p.\n", fcport);
2838                 return;
2839         }
2840
2841         spin_lock_irqsave(&fcport->rport_lock, flags);
2842         io_comp_type = io_req->cmd_type;
2843         spin_unlock_irqrestore(&fcport->rport_lock, flags);
2844
2845         switch (comp_type) {
2846         case FCOE_GOOD_COMPLETION_CQE_TYPE:
2847                 atomic_inc(&fcport->free_sqes);
2848                 switch (io_comp_type) {
2849                 case QEDF_SCSI_CMD:
2850                         qedf_scsi_completion(qedf, cqe, io_req);
2851                         break;
2852                 case QEDF_ELS:
2853                         qedf_process_els_compl(qedf, cqe, io_req);
2854                         break;
2855                 case QEDF_TASK_MGMT_CMD:
2856                         qedf_process_tmf_compl(qedf, cqe, io_req);
2857                         break;
2858                 case QEDF_SEQ_CLEANUP:
2859                         qedf_process_seq_cleanup_compl(qedf, cqe, io_req);
2860                         break;
2861                 }
2862                 break;
2863         case FCOE_ERROR_DETECTION_CQE_TYPE:
2864                 atomic_inc(&fcport->free_sqes);
2865                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2866                     "Error detect CQE.\n");
2867                 qedf_process_error_detect(qedf, cqe, io_req);
2868                 break;
2869         case FCOE_EXCH_CLEANUP_CQE_TYPE:
2870                 atomic_inc(&fcport->free_sqes);
2871                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2872                     "Cleanup CQE.\n");
2873                 qedf_process_cleanup_compl(qedf, cqe, io_req);
2874                 break;
2875         case FCOE_ABTS_CQE_TYPE:
2876                 atomic_inc(&fcport->free_sqes);
2877                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2878                     "Abort CQE.\n");
2879                 qedf_process_abts_compl(qedf, cqe, io_req);
2880                 break;
2881         case FCOE_DUMMY_CQE_TYPE:
2882                 atomic_inc(&fcport->free_sqes);
2883                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2884                     "Dummy CQE.\n");
2885                 break;
2886         case FCOE_LOCAL_COMP_CQE_TYPE:
2887                 atomic_inc(&fcport->free_sqes);
2888                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2889                     "Local completion CQE.\n");
2890                 break;
2891         case FCOE_WARNING_CQE_TYPE:
2892                 atomic_inc(&fcport->free_sqes);
2893                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2894                     "Warning CQE.\n");
2895                 qedf_process_warning_compl(qedf, cqe, io_req);
2896                 break;
2897         case MAX_FCOE_CQE_TYPE:
2898                 atomic_inc(&fcport->free_sqes);
2899                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2900                     "Max FCoE CQE.\n");
2901                 break;
2902         default:
2903                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2904                     "Default CQE.\n");
2905                 break;
2906         }
2907 }
2908
2909 static void qedf_free_bdq(struct qedf_ctx *qedf)
2910 {
2911         int i;
2912
2913         if (qedf->bdq_pbl_list)
2914                 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE,
2915                     qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma);
2916
2917         if (qedf->bdq_pbl)
2918                 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size,
2919                     qedf->bdq_pbl, qedf->bdq_pbl_dma);
2920
2921         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2922                 if (qedf->bdq[i].buf_addr) {
2923                         dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE,
2924                             qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma);
2925                 }
2926         }
2927 }
2928
2929 static void qedf_free_global_queues(struct qedf_ctx *qedf)
2930 {
2931         int i;
2932         struct global_queue **gl = qedf->global_queues;
2933
2934         for (i = 0; i < qedf->num_queues; i++) {
2935                 if (!gl[i])
2936                         continue;
2937
2938                 if (gl[i]->cq)
2939                         dma_free_coherent(&qedf->pdev->dev,
2940                             gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma);
2941                 if (gl[i]->cq_pbl)
2942                         dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size,
2943                             gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
2944
2945                 kfree(gl[i]);
2946         }
2947
2948         qedf_free_bdq(qedf);
2949 }
2950
2951 static int qedf_alloc_bdq(struct qedf_ctx *qedf)
2952 {
2953         int i;
2954         struct scsi_bd *pbl;
2955         u64 *list;
2956         dma_addr_t page;
2957
2958         /* Alloc dma memory for BDQ buffers */
2959         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2960                 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev,
2961                     QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL);
2962                 if (!qedf->bdq[i].buf_addr) {
2963                         QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ "
2964                             "buffer %d.\n", i);
2965                         return -ENOMEM;
2966                 }
2967         }
2968
2969         /* Alloc dma memory for BDQ page buffer list */
2970         qedf->bdq_pbl_mem_size =
2971             QEDF_BDQ_SIZE * sizeof(struct scsi_bd);
2972         qedf->bdq_pbl_mem_size =
2973             ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE);
2974
2975         qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
2976             qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL);
2977         if (!qedf->bdq_pbl) {
2978                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n");
2979                 return -ENOMEM;
2980         }
2981
2982         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2983                   "BDQ PBL addr=0x%p dma=%pad\n",
2984                   qedf->bdq_pbl, &qedf->bdq_pbl_dma);
2985
2986         /*
2987          * Populate BDQ PBL with physical and virtual address of individual
2988          * BDQ buffers
2989          */
2990         pbl = (struct scsi_bd *)qedf->bdq_pbl;
2991         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2992                 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma));
2993                 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma));
2994                 pbl->opaque.fcoe_opaque.hi = 0;
2995                 /* Opaque lo data is an index into the BDQ array */
2996                 pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i);
2997                 pbl++;
2998         }
2999
3000         /* Allocate list of PBL pages */
3001         qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev,
3002                                                 QEDF_PAGE_SIZE,
3003                                                 &qedf->bdq_pbl_list_dma,
3004                                                 GFP_KERNEL);
3005         if (!qedf->bdq_pbl_list) {
3006                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n");
3007                 return -ENOMEM;
3008         }
3009
3010         /*
3011          * Now populate PBL list with pages that contain pointers to the
3012          * individual buffers.
3013          */
3014         qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size /
3015             QEDF_PAGE_SIZE;
3016         list = (u64 *)qedf->bdq_pbl_list;
3017         page = qedf->bdq_pbl_list_dma;
3018         for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) {
3019                 *list = qedf->bdq_pbl_dma;
3020                 list++;
3021                 page += QEDF_PAGE_SIZE;
3022         }
3023
3024         return 0;
3025 }
3026
3027 static int qedf_alloc_global_queues(struct qedf_ctx *qedf)
3028 {
3029         u32 *list;
3030         int i;
3031         int status;
3032         u32 *pbl;
3033         dma_addr_t page;
3034         int num_pages;
3035
3036         /* Allocate and map CQs, RQs */
3037         /*
3038          * Number of global queues (CQ / RQ). This should
3039          * be <= number of available MSIX vectors for the PF
3040          */
3041         if (!qedf->num_queues) {
3042                 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n");
3043                 return -ENOMEM;
3044         }
3045
3046         /*
3047          * Make sure we allocated the PBL that will contain the physical
3048          * addresses of our queues
3049          */
3050         if (!qedf->p_cpuq) {
3051                 QEDF_ERR(&qedf->dbg_ctx, "p_cpuq is NULL.\n");
3052                 return -EINVAL;
3053         }
3054
3055         qedf->global_queues = kzalloc((sizeof(struct global_queue *)
3056             * qedf->num_queues), GFP_KERNEL);
3057         if (!qedf->global_queues) {
3058                 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global "
3059                           "queues array ptr memory\n");
3060                 return -ENOMEM;
3061         }
3062         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3063                    "qedf->global_queues=%p.\n", qedf->global_queues);
3064
3065         /* Allocate DMA coherent buffers for BDQ */
3066         status = qedf_alloc_bdq(qedf);
3067         if (status) {
3068                 QEDF_ERR(&qedf->dbg_ctx, "Unable to allocate bdq.\n");
3069                 goto mem_alloc_failure;
3070         }
3071
3072         /* Allocate a CQ and an associated PBL for each MSI-X vector */
3073         for (i = 0; i < qedf->num_queues; i++) {
3074                 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue),
3075                     GFP_KERNEL);
3076                 if (!qedf->global_queues[i]) {
3077                         QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate "
3078                                    "global queue %d.\n", i);
3079                         status = -ENOMEM;
3080                         goto mem_alloc_failure;
3081                 }
3082
3083                 qedf->global_queues[i]->cq_mem_size =
3084                     FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
3085                 qedf->global_queues[i]->cq_mem_size =
3086                     ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE);
3087
3088                 qedf->global_queues[i]->cq_pbl_size =
3089                     (qedf->global_queues[i]->cq_mem_size /
3090                     PAGE_SIZE) * sizeof(void *);
3091                 qedf->global_queues[i]->cq_pbl_size =
3092                     ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE);
3093
3094                 qedf->global_queues[i]->cq =
3095                     dma_alloc_coherent(&qedf->pdev->dev,
3096                                        qedf->global_queues[i]->cq_mem_size,
3097                                        &qedf->global_queues[i]->cq_dma,
3098                                        GFP_KERNEL);
3099
3100                 if (!qedf->global_queues[i]->cq) {
3101                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n");
3102                         status = -ENOMEM;
3103                         goto mem_alloc_failure;
3104                 }
3105
3106                 qedf->global_queues[i]->cq_pbl =
3107                     dma_alloc_coherent(&qedf->pdev->dev,
3108                                        qedf->global_queues[i]->cq_pbl_size,
3109                                        &qedf->global_queues[i]->cq_pbl_dma,
3110                                        GFP_KERNEL);
3111
3112                 if (!qedf->global_queues[i]->cq_pbl) {
3113                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n");
3114                         status = -ENOMEM;
3115                         goto mem_alloc_failure;
3116                 }
3117
3118                 /* Create PBL */
3119                 num_pages = qedf->global_queues[i]->cq_mem_size /
3120                     QEDF_PAGE_SIZE;
3121                 page = qedf->global_queues[i]->cq_dma;
3122                 pbl = (u32 *)qedf->global_queues[i]->cq_pbl;
3123
3124                 while (num_pages--) {
3125                         *pbl = U64_LO(page);
3126                         pbl++;
3127                         *pbl = U64_HI(page);
3128                         pbl++;
3129                         page += QEDF_PAGE_SIZE;
3130                 }
3131                 /* Set the initial consumer index for cq */
3132                 qedf->global_queues[i]->cq_cons_idx = 0;
3133         }
3134
3135         list = (u32 *)qedf->p_cpuq;
3136
3137         /*
3138          * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
3139          * CQ#1 PBL pointer, RQ#1 PBL pointer, etc.  Each PBL pointer points
3140          * to the physical address which contains an array of pointers to
3141          * the physical addresses of the specific queue pages.
3142          */
3143         for (i = 0; i < qedf->num_queues; i++) {
3144                 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma);
3145                 list++;
3146                 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma);
3147                 list++;
3148                 *list = U64_LO(0);
3149                 list++;
3150                 *list = U64_HI(0);
3151                 list++;
3152         }
3153
3154         return 0;
3155
3156 mem_alloc_failure:
3157         qedf_free_global_queues(qedf);
3158         return status;
3159 }
3160
3161 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf)
3162 {
3163         u8 sq_num_pbl_pages;
3164         u32 sq_mem_size;
3165         u32 cq_mem_size;
3166         u32 cq_num_entries;
3167         int rval;
3168
3169         /*
3170          * The number of completion queues/fastpath interrupts/status blocks
3171          * we allocation is the minimum off:
3172          *
3173          * Number of CPUs
3174          * Number allocated by qed for our PCI function
3175          */
3176         qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf);
3177
3178         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n",
3179                    qedf->num_queues);
3180
3181         qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev,
3182             qedf->num_queues * sizeof(struct qedf_glbl_q_params),
3183             &qedf->hw_p_cpuq, GFP_KERNEL);
3184
3185         if (!qedf->p_cpuq) {
3186                 QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n");
3187                 return 1;
3188         }
3189
3190         rval = qedf_alloc_global_queues(qedf);
3191         if (rval) {
3192                 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation "
3193                           "failed.\n");
3194                 return 1;
3195         }
3196
3197         /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */
3198         sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
3199         sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE);
3200         sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE);
3201
3202         /* Calculate CQ num entries */
3203         cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
3204         cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE);
3205         cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe);
3206
3207         memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params));
3208
3209         /* Setup the value for fcoe PF */
3210         qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS;
3211         qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS;
3212         qedf->pf_params.fcoe_pf_params.glbl_q_params_addr =
3213             (u64)qedf->hw_p_cpuq;
3214         qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages;
3215
3216         qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0;
3217
3218         qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries;
3219         qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues;
3220
3221         /* log_page_size: 12 for 4KB pages */
3222         qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE);
3223
3224         qedf->pf_params.fcoe_pf_params.mtu = 9000;
3225         qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI;
3226         qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI;
3227
3228         /* BDQ address and size */
3229         qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] =
3230             qedf->bdq_pbl_list_dma;
3231         qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] =
3232             qedf->bdq_pbl_list_num_entries;
3233         qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE;
3234
3235         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3236             "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n",
3237             qedf->bdq_pbl_list,
3238             qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0],
3239             qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]);
3240
3241         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3242             "cq_num_entries=%d.\n",
3243             qedf->pf_params.fcoe_pf_params.cq_num_entries);
3244
3245         return 0;
3246 }
3247
3248 /* Free DMA coherent memory for array of queue pointers we pass to qed */
3249 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf)
3250 {
3251         size_t size = 0;
3252
3253         if (qedf->p_cpuq) {
3254                 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params);
3255                 dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq,
3256                     qedf->hw_p_cpuq);
3257         }
3258
3259         qedf_free_global_queues(qedf);
3260
3261         kfree(qedf->global_queues);
3262 }
3263
3264 /*
3265  * PCI driver functions
3266  */
3267
3268 static const struct pci_device_id qedf_pci_tbl[] = {
3269         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) },
3270         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) },
3271         {0}
3272 };
3273 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl);
3274
3275 static struct pci_driver qedf_pci_driver = {
3276         .name = QEDF_MODULE_NAME,
3277         .id_table = qedf_pci_tbl,
3278         .probe = qedf_probe,
3279         .remove = qedf_remove,
3280         .shutdown = qedf_shutdown,
3281         .suspend = qedf_suspend,
3282 };
3283
3284 static int __qedf_probe(struct pci_dev *pdev, int mode)
3285 {
3286         int rc = -EINVAL;
3287         struct fc_lport *lport;
3288         struct qedf_ctx *qedf = NULL;
3289         struct Scsi_Host *host;
3290         bool is_vf = false;
3291         struct qed_ll2_params params;
3292         char host_buf[20];
3293         struct qed_link_params link_params;
3294         int status;
3295         void *task_start, *task_end;
3296         struct qed_slowpath_params slowpath_params;
3297         struct qed_probe_params qed_params;
3298         u16 retry_cnt = 10;
3299
3300         /*
3301          * When doing error recovery we didn't reap the lport so don't try
3302          * to reallocate it.
3303          */
3304 retry_probe:
3305         if (mode == QEDF_MODE_RECOVERY)
3306                 msleep(2000);
3307
3308         if (mode != QEDF_MODE_RECOVERY) {
3309                 lport = libfc_host_alloc(&qedf_host_template,
3310                     sizeof(struct qedf_ctx));
3311
3312                 if (!lport) {
3313                         QEDF_ERR(NULL, "Could not allocate lport.\n");
3314                         rc = -ENOMEM;
3315                         goto err0;
3316                 }
3317
3318                 fc_disc_init(lport);
3319
3320                 /* Initialize qedf_ctx */
3321                 qedf = lport_priv(lport);
3322                 set_bit(QEDF_PROBING, &qedf->flags);
3323                 qedf->lport = lport;
3324                 qedf->ctlr.lp = lport;
3325                 qedf->pdev = pdev;
3326                 qedf->dbg_ctx.pdev = pdev;
3327                 qedf->dbg_ctx.host_no = lport->host->host_no;
3328                 spin_lock_init(&qedf->hba_lock);
3329                 INIT_LIST_HEAD(&qedf->fcports);
3330                 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1;
3331                 atomic_set(&qedf->num_offloads, 0);
3332                 qedf->stop_io_on_error = false;
3333                 pci_set_drvdata(pdev, qedf);
3334                 init_completion(&qedf->fipvlan_compl);
3335                 mutex_init(&qedf->stats_mutex);
3336                 mutex_init(&qedf->flush_mutex);
3337                 qedf->flogi_pending = 0;
3338
3339                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO,
3340                    "QLogic FastLinQ FCoE Module qedf %s, "
3341                    "FW %d.%d.%d.%d\n", QEDF_VERSION,
3342                    FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
3343                    FW_ENGINEERING_VERSION);
3344         } else {
3345                 /* Init pointers during recovery */
3346                 qedf = pci_get_drvdata(pdev);
3347                 set_bit(QEDF_PROBING, &qedf->flags);
3348                 lport = qedf->lport;
3349         }
3350
3351         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe started.\n");
3352
3353         host = lport->host;
3354
3355         /* Allocate mempool for qedf_io_work structs */
3356         qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN,
3357             qedf_io_work_cache);
3358         if (qedf->io_mempool == NULL) {
3359                 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n");
3360                 goto err1;
3361         }
3362         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n",
3363             qedf->io_mempool);
3364
3365         sprintf(host_buf, "qedf_%u_link",
3366             qedf->lport->host->host_no);
3367         qedf->link_update_wq = create_workqueue(host_buf);
3368         INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update);
3369         INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery);
3370         INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump);
3371         INIT_DELAYED_WORK(&qedf->stag_work, qedf_stag_change_work);
3372         qedf->fipvlan_retries = qedf_fipvlan_retries;
3373         /* Set a default prio in case DCBX doesn't converge */
3374         if (qedf_default_prio > -1) {
3375                 /*
3376                  * This is the case where we pass a modparam in so we want to
3377                  * honor it even if dcbx doesn't converge.
3378                  */
3379                 qedf->prio = qedf_default_prio;
3380         } else
3381                 qedf->prio = QEDF_DEFAULT_PRIO;
3382
3383         /*
3384          * Common probe. Takes care of basic hardware init and pci_*
3385          * functions.
3386          */
3387         memset(&qed_params, 0, sizeof(qed_params));
3388         qed_params.protocol = QED_PROTOCOL_FCOE;
3389         qed_params.dp_module = qedf_dp_module;
3390         qed_params.dp_level = qedf_dp_level;
3391         qed_params.is_vf = is_vf;
3392         qedf->cdev = qed_ops->common->probe(pdev, &qed_params);
3393         if (!qedf->cdev) {
3394                 if ((mode == QEDF_MODE_RECOVERY) && retry_cnt) {
3395                         QEDF_ERR(&qedf->dbg_ctx,
3396                                 "Retry %d initialize hardware\n", retry_cnt);
3397                         retry_cnt--;
3398                         goto retry_probe;
3399                 }
3400                 QEDF_ERR(&qedf->dbg_ctx, "common probe failed.\n");
3401                 rc = -ENODEV;
3402                 goto err1;
3403         }
3404
3405         /* Learn information crucial for qedf to progress */
3406         rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
3407         if (rc) {
3408                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n");
3409                 goto err1;
3410         }
3411
3412         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
3413                   "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
3414                   qedf->dev_info.common.num_hwfns,
3415                   qed_ops->common->get_affin_hwfn_idx(qedf->cdev));
3416
3417         /* queue allocation code should come here
3418          * order should be
3419          *      slowpath_start
3420          *      status block allocation
3421          *      interrupt registration (to get min number of queues)
3422          *      set_fcoe_pf_param
3423          *      qed_sp_fcoe_func_start
3424          */
3425         rc = qedf_set_fcoe_pf_param(qedf);
3426         if (rc) {
3427                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n");
3428                 goto err2;
3429         }
3430         qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3431
3432         /* Learn information crucial for qedf to progress */
3433         rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
3434         if (rc) {
3435                 QEDF_ERR(&qedf->dbg_ctx, "Failed to fill dev info.\n");
3436                 goto err2;
3437         }
3438
3439         /* Record BDQ producer doorbell addresses */
3440         qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr;
3441         qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr;
3442         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3443             "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod,
3444             qedf->bdq_secondary_prod);
3445
3446         qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf);
3447
3448         rc = qedf_prepare_sb(qedf);
3449         if (rc) {
3450
3451                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3452                 goto err2;
3453         }
3454
3455         /* Start the Slowpath-process */
3456         slowpath_params.int_mode = QED_INT_MODE_MSIX;
3457         slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER;
3458         slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER;
3459         slowpath_params.drv_rev = QEDF_DRIVER_REV_VER;
3460         slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER;
3461         strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE);
3462         rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params);
3463         if (rc) {
3464                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3465                 goto err2;
3466         }
3467
3468         /*
3469          * update_pf_params needs to be called before and after slowpath
3470          * start
3471          */
3472         qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3473
3474         /* Setup interrupts */
3475         rc = qedf_setup_int(qedf);
3476         if (rc) {
3477                 QEDF_ERR(&qedf->dbg_ctx, "Setup interrupts failed.\n");
3478                 goto err3;
3479         }
3480
3481         rc = qed_ops->start(qedf->cdev, &qedf->tasks);
3482         if (rc) {
3483                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n");
3484                 goto err4;
3485         }
3486         task_start = qedf_get_task_mem(&qedf->tasks, 0);
3487         task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1);
3488         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, "
3489                    "end=%p block_size=%u.\n", task_start, task_end,
3490                    qedf->tasks.size);
3491
3492         /*
3493          * We need to write the number of BDs in the BDQ we've preallocated so
3494          * the f/w will do a prefetch and we'll get an unsolicited CQE when a
3495          * packet arrives.
3496          */
3497         qedf->bdq_prod_idx = QEDF_BDQ_SIZE;
3498         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3499             "Writing %d to primary and secondary BDQ doorbell registers.\n",
3500             qedf->bdq_prod_idx);
3501         writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod);
3502         readw(qedf->bdq_primary_prod);
3503         writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod);
3504         readw(qedf->bdq_secondary_prod);
3505
3506         qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3507
3508         /* Now that the dev_info struct has been filled in set the MAC
3509          * address
3510          */
3511         ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac);
3512         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n",
3513                    qedf->mac);
3514
3515         /*
3516          * Set the WWNN and WWPN in the following way:
3517          *
3518          * If the info we get from qed is non-zero then use that to set the
3519          * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based
3520          * on the MAC address.
3521          */
3522         if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) {
3523                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3524                     "Setting WWPN and WWNN from qed dev_info.\n");
3525                 qedf->wwnn = qedf->dev_info.wwnn;
3526                 qedf->wwpn = qedf->dev_info.wwpn;
3527         } else {
3528                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3529                     "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n");
3530                 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0);
3531                 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0);
3532         }
3533         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,  "WWNN=%016llx "
3534                    "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn);
3535
3536         sprintf(host_buf, "host_%d", host->host_no);
3537         qed_ops->common->set_name(qedf->cdev, host_buf);
3538
3539         /* Allocate cmd mgr */
3540         qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf);
3541         if (!qedf->cmd_mgr) {
3542                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n");
3543                 rc = -ENOMEM;
3544                 goto err5;
3545         }
3546
3547         if (mode != QEDF_MODE_RECOVERY) {
3548                 host->transportt = qedf_fc_transport_template;
3549                 host->max_lun = qedf_max_lun;
3550                 host->max_cmd_len = QEDF_MAX_CDB_LEN;
3551                 host->can_queue = FCOE_PARAMS_NUM_TASKS;
3552                 rc = scsi_add_host(host, &pdev->dev);
3553                 if (rc) {
3554                         QEDF_WARN(&qedf->dbg_ctx,
3555                                   "Error adding Scsi_Host rc=0x%x.\n", rc);
3556                         goto err6;
3557                 }
3558         }
3559
3560         memset(&params, 0, sizeof(params));
3561         params.mtu = QEDF_LL2_BUF_SIZE;
3562         ether_addr_copy(params.ll2_mac_address, qedf->mac);
3563
3564         /* Start LL2 processing thread */
3565         snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no);
3566         qedf->ll2_recv_wq =
3567                 create_workqueue(host_buf);
3568         if (!qedf->ll2_recv_wq) {
3569                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n");
3570                 rc = -ENOMEM;
3571                 goto err7;
3572         }
3573
3574 #ifdef CONFIG_DEBUG_FS
3575         qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops,
3576                             qedf_dbg_fops);
3577 #endif
3578
3579         /* Start LL2 */
3580         qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf);
3581         rc = qed_ops->ll2->start(qedf->cdev, &params);
3582         if (rc) {
3583                 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n");
3584                 goto err7;
3585         }
3586         set_bit(QEDF_LL2_STARTED, &qedf->flags);
3587
3588         /* Set initial FIP/FCoE VLAN to NULL */
3589         qedf->vlan_id = 0;
3590
3591         /*
3592          * No need to setup fcoe_ctlr or fc_lport objects during recovery since
3593          * they were not reaped during the unload process.
3594          */
3595         if (mode != QEDF_MODE_RECOVERY) {
3596                 /* Setup imbedded fcoe controller */
3597                 qedf_fcoe_ctlr_setup(qedf);
3598
3599                 /* Setup lport */
3600                 rc = qedf_lport_setup(qedf);
3601                 if (rc) {
3602                         QEDF_ERR(&(qedf->dbg_ctx),
3603                             "qedf_lport_setup failed.\n");
3604                         goto err7;
3605                 }
3606         }
3607
3608         sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no);
3609         qedf->timer_work_queue =
3610                 create_workqueue(host_buf);
3611         if (!qedf->timer_work_queue) {
3612                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer "
3613                           "workqueue.\n");
3614                 rc = -ENOMEM;
3615                 goto err7;
3616         }
3617
3618         /* DPC workqueue is not reaped during recovery unload */
3619         if (mode != QEDF_MODE_RECOVERY) {
3620                 sprintf(host_buf, "qedf_%u_dpc",
3621                     qedf->lport->host->host_no);
3622                 qedf->dpc_wq = create_workqueue(host_buf);
3623         }
3624         INIT_DELAYED_WORK(&qedf->recovery_work, qedf_recovery_handler);
3625
3626         /*
3627          * GRC dump and sysfs parameters are not reaped during the recovery
3628          * unload process.
3629          */
3630         if (mode != QEDF_MODE_RECOVERY) {
3631                 qedf->grcdump_size =
3632                     qed_ops->common->dbg_all_data_size(qedf->cdev);
3633                 if (qedf->grcdump_size) {
3634                         rc = qedf_alloc_grc_dump_buf(&qedf->grcdump,
3635                             qedf->grcdump_size);
3636                         if (rc) {
3637                                 QEDF_ERR(&(qedf->dbg_ctx),
3638                                     "GRC Dump buffer alloc failed.\n");
3639                                 qedf->grcdump = NULL;
3640                         }
3641
3642                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3643                             "grcdump: addr=%p, size=%u.\n",
3644                             qedf->grcdump, qedf->grcdump_size);
3645                 }
3646                 qedf_create_sysfs_ctx_attr(qedf);
3647
3648                 /* Initialize I/O tracing for this adapter */
3649                 spin_lock_init(&qedf->io_trace_lock);
3650                 qedf->io_trace_idx = 0;
3651         }
3652
3653         init_completion(&qedf->flogi_compl);
3654
3655         status = qed_ops->common->update_drv_state(qedf->cdev, true);
3656         if (status)
3657                 QEDF_ERR(&(qedf->dbg_ctx),
3658                         "Failed to send drv state to MFW.\n");
3659
3660         memset(&link_params, 0, sizeof(struct qed_link_params));
3661         link_params.link_up = true;
3662         status = qed_ops->common->set_link(qedf->cdev, &link_params);
3663         if (status)
3664                 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n");
3665
3666         /* Start/restart discovery */
3667         if (mode == QEDF_MODE_RECOVERY)
3668                 fcoe_ctlr_link_up(&qedf->ctlr);
3669         else
3670                 fc_fabric_login(lport);
3671
3672         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe done.\n");
3673
3674         clear_bit(QEDF_PROBING, &qedf->flags);
3675
3676         /* All good */
3677         return 0;
3678
3679 err7:
3680         if (qedf->ll2_recv_wq)
3681                 destroy_workqueue(qedf->ll2_recv_wq);
3682         fc_remove_host(qedf->lport->host);
3683         scsi_remove_host(qedf->lport->host);
3684 #ifdef CONFIG_DEBUG_FS
3685         qedf_dbg_host_exit(&(qedf->dbg_ctx));
3686 #endif
3687 err6:
3688         qedf_cmd_mgr_free(qedf->cmd_mgr);
3689 err5:
3690         qed_ops->stop(qedf->cdev);
3691 err4:
3692         qedf_free_fcoe_pf_param(qedf);
3693         qedf_sync_free_irqs(qedf);
3694 err3:
3695         qed_ops->common->slowpath_stop(qedf->cdev);
3696 err2:
3697         qed_ops->common->remove(qedf->cdev);
3698 err1:
3699         scsi_host_put(lport->host);
3700 err0:
3701         return rc;
3702 }
3703
3704 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
3705 {
3706         return __qedf_probe(pdev, QEDF_MODE_NORMAL);
3707 }
3708
3709 static void __qedf_remove(struct pci_dev *pdev, int mode)
3710 {
3711         struct qedf_ctx *qedf;
3712         int rc;
3713
3714         if (!pdev) {
3715                 QEDF_ERR(NULL, "pdev is NULL.\n");
3716                 return;
3717         }
3718
3719         qedf = pci_get_drvdata(pdev);
3720
3721         /*
3722          * Prevent race where we're in board disable work and then try to
3723          * rmmod the module.
3724          */
3725         if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
3726                 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n");
3727                 return;
3728         }
3729
3730         if (mode != QEDF_MODE_RECOVERY)
3731                 set_bit(QEDF_UNLOADING, &qedf->flags);
3732
3733         /* Logoff the fabric to upload all connections */
3734         if (mode == QEDF_MODE_RECOVERY)
3735                 fcoe_ctlr_link_down(&qedf->ctlr);
3736         else
3737                 fc_fabric_logoff(qedf->lport);
3738
3739         if (qedf_wait_for_upload(qedf) == false)
3740                 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n");
3741
3742 #ifdef CONFIG_DEBUG_FS
3743         qedf_dbg_host_exit(&(qedf->dbg_ctx));
3744 #endif
3745
3746         /* Stop any link update handling */
3747         cancel_delayed_work_sync(&qedf->link_update);
3748         destroy_workqueue(qedf->link_update_wq);
3749         qedf->link_update_wq = NULL;
3750
3751         if (qedf->timer_work_queue)
3752                 destroy_workqueue(qedf->timer_work_queue);
3753
3754         /* Stop Light L2 */
3755         clear_bit(QEDF_LL2_STARTED, &qedf->flags);
3756         qed_ops->ll2->stop(qedf->cdev);
3757         if (qedf->ll2_recv_wq)
3758                 destroy_workqueue(qedf->ll2_recv_wq);
3759
3760         /* Stop fastpath */
3761         qedf_sync_free_irqs(qedf);
3762         qedf_destroy_sb(qedf);
3763
3764         /*
3765          * During recovery don't destroy OS constructs that represent the
3766          * physical port.
3767          */
3768         if (mode != QEDF_MODE_RECOVERY) {
3769                 qedf_free_grc_dump_buf(&qedf->grcdump);
3770                 qedf_remove_sysfs_ctx_attr(qedf);
3771
3772                 /* Remove all SCSI/libfc/libfcoe structures */
3773                 fcoe_ctlr_destroy(&qedf->ctlr);
3774                 fc_lport_destroy(qedf->lport);
3775                 fc_remove_host(qedf->lport->host);
3776                 scsi_remove_host(qedf->lport->host);
3777         }
3778
3779         qedf_cmd_mgr_free(qedf->cmd_mgr);
3780
3781         if (mode != QEDF_MODE_RECOVERY) {
3782                 fc_exch_mgr_free(qedf->lport);
3783                 fc_lport_free_stats(qedf->lport);
3784
3785                 /* Wait for all vports to be reaped */
3786                 qedf_wait_for_vport_destroy(qedf);
3787         }
3788
3789         /*
3790          * Now that all connections have been uploaded we can stop the
3791          * rest of the qed operations
3792          */
3793         qed_ops->stop(qedf->cdev);
3794
3795         if (mode != QEDF_MODE_RECOVERY) {
3796                 if (qedf->dpc_wq) {
3797                         /* Stop general DPC handling */
3798                         destroy_workqueue(qedf->dpc_wq);
3799                         qedf->dpc_wq = NULL;
3800                 }
3801         }
3802
3803         /* Final shutdown for the board */
3804         qedf_free_fcoe_pf_param(qedf);
3805         if (mode != QEDF_MODE_RECOVERY) {
3806                 qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3807                 pci_set_drvdata(pdev, NULL);
3808         }
3809
3810         rc = qed_ops->common->update_drv_state(qedf->cdev, false);
3811         if (rc)
3812                 QEDF_ERR(&(qedf->dbg_ctx),
3813                         "Failed to send drv state to MFW.\n");
3814
3815         qed_ops->common->slowpath_stop(qedf->cdev);
3816         qed_ops->common->remove(qedf->cdev);
3817
3818         mempool_destroy(qedf->io_mempool);
3819
3820         /* Only reap the Scsi_host on a real removal */
3821         if (mode != QEDF_MODE_RECOVERY)
3822                 scsi_host_put(qedf->lport->host);
3823 }
3824
3825 static void qedf_remove(struct pci_dev *pdev)
3826 {
3827         /* Check to make sure this function wasn't already disabled */
3828         if (!atomic_read(&pdev->enable_cnt))
3829                 return;
3830
3831         __qedf_remove(pdev, QEDF_MODE_NORMAL);
3832 }
3833
3834 void qedf_wq_grcdump(struct work_struct *work)
3835 {
3836         struct qedf_ctx *qedf =
3837             container_of(work, struct qedf_ctx, grcdump_work.work);
3838
3839         QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n");
3840         qedf_capture_grc_dump(qedf);
3841 }
3842
3843 void qedf_schedule_hw_err_handler(void *dev, enum qed_hw_err_type err_type)
3844 {
3845         struct qedf_ctx *qedf = dev;
3846
3847         QEDF_ERR(&(qedf->dbg_ctx),
3848                         "Hardware error handler scheduled, event=%d.\n",
3849                         err_type);
3850
3851         if (test_bit(QEDF_IN_RECOVERY, &qedf->flags)) {
3852                 QEDF_ERR(&(qedf->dbg_ctx),
3853                                 "Already in recovery, not scheduling board disable work.\n");
3854                 return;
3855         }
3856
3857         switch (err_type) {
3858         case QED_HW_ERR_FAN_FAIL:
3859                 schedule_delayed_work(&qedf->board_disable_work, 0);
3860                 break;
3861         case QED_HW_ERR_MFW_RESP_FAIL:
3862         case QED_HW_ERR_HW_ATTN:
3863         case QED_HW_ERR_DMAE_FAIL:
3864         case QED_HW_ERR_FW_ASSERT:
3865                 /* Prevent HW attentions from being reasserted */
3866                 qed_ops->common->attn_clr_enable(qedf->cdev, true);
3867                 break;
3868         case QED_HW_ERR_RAMROD_FAIL:
3869                 /* Prevent HW attentions from being reasserted */
3870                 qed_ops->common->attn_clr_enable(qedf->cdev, true);
3871
3872                 if (qedf_enable_recovery)
3873                         qed_ops->common->recovery_process(qedf->cdev);
3874
3875                 break;
3876         default:
3877                 break;
3878         }
3879 }
3880
3881 /*
3882  * Protocol TLV handler
3883  */
3884 void qedf_get_protocol_tlv_data(void *dev, void *data)
3885 {
3886         struct qedf_ctx *qedf = dev;
3887         struct qed_mfw_tlv_fcoe *fcoe = data;
3888         struct fc_lport *lport;
3889         struct Scsi_Host *host;
3890         struct fc_host_attrs *fc_host;
3891         struct fc_host_statistics *hst;
3892
3893         if (!qedf) {
3894                 QEDF_ERR(NULL, "qedf is null.\n");
3895                 return;
3896         }
3897
3898         if (test_bit(QEDF_PROBING, &qedf->flags)) {
3899                 QEDF_ERR(&qedf->dbg_ctx, "Function is still probing.\n");
3900                 return;
3901         }
3902
3903         lport = qedf->lport;
3904         host = lport->host;
3905         fc_host = shost_to_fc_host(host);
3906
3907         /* Force a refresh of the fc_host stats including offload stats */
3908         hst = qedf_fc_get_host_stats(host);
3909
3910         fcoe->qos_pri_set = true;
3911         fcoe->qos_pri = 3; /* Hard coded to 3 in driver */
3912
3913         fcoe->ra_tov_set = true;
3914         fcoe->ra_tov = lport->r_a_tov;
3915
3916         fcoe->ed_tov_set = true;
3917         fcoe->ed_tov = lport->e_d_tov;
3918
3919         fcoe->npiv_state_set = true;
3920         fcoe->npiv_state = 1; /* NPIV always enabled */
3921
3922         fcoe->num_npiv_ids_set = true;
3923         fcoe->num_npiv_ids = fc_host->npiv_vports_inuse;
3924
3925         /* Certain attributes we only want to set if we've selected an FCF */
3926         if (qedf->ctlr.sel_fcf) {
3927                 fcoe->switch_name_set = true;
3928                 u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name);
3929         }
3930
3931         fcoe->port_state_set = true;
3932         /* For qedf we're either link down or fabric attach */
3933         if (lport->link_up)
3934                 fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC;
3935         else
3936                 fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE;
3937
3938         fcoe->link_failures_set = true;
3939         fcoe->link_failures = (u16)hst->link_failure_count;
3940
3941         fcoe->fcoe_txq_depth_set = true;
3942         fcoe->fcoe_rxq_depth_set = true;
3943         fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS;
3944         fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS;
3945
3946         fcoe->fcoe_rx_frames_set = true;
3947         fcoe->fcoe_rx_frames = hst->rx_frames;
3948
3949         fcoe->fcoe_tx_frames_set = true;
3950         fcoe->fcoe_tx_frames = hst->tx_frames;
3951
3952         fcoe->fcoe_rx_bytes_set = true;
3953         fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000;
3954
3955         fcoe->fcoe_tx_bytes_set = true;
3956         fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000;
3957
3958         fcoe->crc_count_set = true;
3959         fcoe->crc_count = hst->invalid_crc_count;
3960
3961         fcoe->tx_abts_set = true;
3962         fcoe->tx_abts = hst->fcp_packet_aborts;
3963
3964         fcoe->tx_lun_rst_set = true;
3965         fcoe->tx_lun_rst = qedf->lun_resets;
3966
3967         fcoe->abort_task_sets_set = true;
3968         fcoe->abort_task_sets = qedf->packet_aborts;
3969
3970         fcoe->scsi_busy_set = true;
3971         fcoe->scsi_busy = qedf->busy;
3972
3973         fcoe->scsi_tsk_full_set = true;
3974         fcoe->scsi_tsk_full = qedf->task_set_fulls;
3975 }
3976
3977 /* Deferred work function to perform soft context reset on STAG change */
3978 void qedf_stag_change_work(struct work_struct *work)
3979 {
3980         struct qedf_ctx *qedf =
3981             container_of(work, struct qedf_ctx, stag_work.work);
3982
3983         if (!qedf) {
3984                 QEDF_ERR(NULL, "qedf is NULL");
3985                 return;
3986         }
3987         QEDF_ERR(&qedf->dbg_ctx, "Performing software context reset.\n");
3988         qedf_ctx_soft_reset(qedf->lport);
3989 }
3990
3991 static void qedf_shutdown(struct pci_dev *pdev)
3992 {
3993         __qedf_remove(pdev, QEDF_MODE_NORMAL);
3994 }
3995
3996 static int qedf_suspend(struct pci_dev *pdev, pm_message_t state)
3997 {
3998         struct qedf_ctx *qedf;
3999
4000         if (!pdev) {
4001                 QEDF_ERR(NULL, "pdev is NULL.\n");
4002                 return -ENODEV;
4003         }
4004
4005         qedf = pci_get_drvdata(pdev);
4006
4007         QEDF_ERR(&qedf->dbg_ctx, "%s: Device does not support suspend operation\n", __func__);
4008
4009         return -EPERM;
4010 }
4011
4012 /*
4013  * Recovery handler code
4014  */
4015 static void qedf_schedule_recovery_handler(void *dev)
4016 {
4017         struct qedf_ctx *qedf = dev;
4018
4019         QEDF_ERR(&qedf->dbg_ctx, "Recovery handler scheduled.\n");
4020         schedule_delayed_work(&qedf->recovery_work, 0);
4021 }
4022
4023 static void qedf_recovery_handler(struct work_struct *work)
4024 {
4025         struct qedf_ctx *qedf =
4026             container_of(work, struct qedf_ctx, recovery_work.work);
4027
4028         if (test_and_set_bit(QEDF_IN_RECOVERY, &qedf->flags))
4029                 return;
4030
4031         /*
4032          * Call common_ops->recovery_prolog to allow the MFW to quiesce
4033          * any PCI transactions.
4034          */
4035         qed_ops->common->recovery_prolog(qedf->cdev);
4036
4037         QEDF_ERR(&qedf->dbg_ctx, "Recovery work start.\n");
4038         __qedf_remove(qedf->pdev, QEDF_MODE_RECOVERY);
4039         /*
4040          * Reset link and dcbx to down state since we will not get a link down
4041          * event from the MFW but calling __qedf_remove will essentially be a
4042          * link down event.
4043          */
4044         atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
4045         atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
4046         __qedf_probe(qedf->pdev, QEDF_MODE_RECOVERY);
4047         clear_bit(QEDF_IN_RECOVERY, &qedf->flags);
4048         QEDF_ERR(&qedf->dbg_ctx, "Recovery work complete.\n");
4049 }
4050
4051 /* Generic TLV data callback */
4052 void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
4053 {
4054         struct qedf_ctx *qedf;
4055
4056         if (!dev) {
4057                 QEDF_INFO(NULL, QEDF_LOG_EVT,
4058                           "dev is NULL so ignoring get_generic_tlv_data request.\n");
4059                 return;
4060         }
4061         qedf = (struct qedf_ctx *)dev;
4062
4063         memset(data, 0, sizeof(struct qed_generic_tlvs));
4064         ether_addr_copy(data->mac[0], qedf->mac);
4065 }
4066
4067 /*
4068  * Module Init/Remove
4069  */
4070
4071 static int __init qedf_init(void)
4072 {
4073         int ret;
4074
4075         /* If debug=1 passed, set the default log mask */
4076         if (qedf_debug == QEDF_LOG_DEFAULT)
4077                 qedf_debug = QEDF_DEFAULT_LOG_MASK;
4078
4079         /*
4080          * Check that default prio for FIP/FCoE traffic is between 0..7 if a
4081          * value has been set
4082          */
4083         if (qedf_default_prio > -1)
4084                 if (qedf_default_prio > 7) {
4085                         qedf_default_prio = QEDF_DEFAULT_PRIO;
4086                         QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n",
4087                             QEDF_DEFAULT_PRIO);
4088                 }
4089
4090         /* Print driver banner */
4091         QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR,
4092                    QEDF_VERSION);
4093
4094         /* Create kmem_cache for qedf_io_work structs */
4095         qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache",
4096             sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL);
4097         if (qedf_io_work_cache == NULL) {
4098                 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n");
4099                 goto err1;
4100         }
4101         QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n",
4102             qedf_io_work_cache);
4103
4104         qed_ops = qed_get_fcoe_ops();
4105         if (!qed_ops) {
4106                 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n");
4107                 goto err1;
4108         }
4109
4110 #ifdef CONFIG_DEBUG_FS
4111         qedf_dbg_init("qedf");
4112 #endif
4113
4114         qedf_fc_transport_template =
4115             fc_attach_transport(&qedf_fc_transport_fn);
4116         if (!qedf_fc_transport_template) {
4117                 QEDF_ERR(NULL, "Could not register with FC transport\n");
4118                 goto err2;
4119         }
4120
4121         qedf_fc_vport_transport_template =
4122                 fc_attach_transport(&qedf_fc_vport_transport_fn);
4123         if (!qedf_fc_vport_transport_template) {
4124                 QEDF_ERR(NULL, "Could not register vport template with FC "
4125                           "transport\n");
4126                 goto err3;
4127         }
4128
4129         qedf_io_wq = create_workqueue("qedf_io_wq");
4130         if (!qedf_io_wq) {
4131                 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n");
4132                 goto err4;
4133         }
4134
4135         qedf_cb_ops.get_login_failures = qedf_get_login_failures;
4136
4137         ret = pci_register_driver(&qedf_pci_driver);
4138         if (ret) {
4139                 QEDF_ERR(NULL, "Failed to register driver\n");
4140                 goto err5;
4141         }
4142
4143         return 0;
4144
4145 err5:
4146         destroy_workqueue(qedf_io_wq);
4147 err4:
4148         fc_release_transport(qedf_fc_vport_transport_template);
4149 err3:
4150         fc_release_transport(qedf_fc_transport_template);
4151 err2:
4152 #ifdef CONFIG_DEBUG_FS
4153         qedf_dbg_exit();
4154 #endif
4155         qed_put_fcoe_ops();
4156 err1:
4157         return -EINVAL;
4158 }
4159
4160 static void __exit qedf_cleanup(void)
4161 {
4162         pci_unregister_driver(&qedf_pci_driver);
4163
4164         destroy_workqueue(qedf_io_wq);
4165
4166         fc_release_transport(qedf_fc_vport_transport_template);
4167         fc_release_transport(qedf_fc_transport_template);
4168 #ifdef CONFIG_DEBUG_FS
4169         qedf_dbg_exit();
4170 #endif
4171         qed_put_fcoe_ops();
4172
4173         kmem_cache_destroy(qedf_io_work_cache);
4174 }
4175
4176 MODULE_LICENSE("GPL");
4177 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx FCoE Module");
4178 MODULE_AUTHOR("QLogic Corporation");
4179 MODULE_VERSION(QEDF_VERSION);
4180 module_init(qedf_init);
4181 module_exit(qedf_cleanup);