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 = qedf_priv(sc_cmd)->io_req;
 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;
 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 (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
 904         rcu_read_unlock();
 905         return false;
 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                 printk_ratelimited("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 const 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_groups   = qedf_host_groups,
 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         .cmd_size = sizeof(struct qedf_cmd_priv),
1001 };
1002
1003 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen)
1004 {
1005         int rc;
1006
1007         spin_lock(&qedf_global_lock);
1008         rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global);
1009         spin_unlock(&qedf_global_lock);
1010
1011         return rc;
1012 }
1013
1014 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id)
1015 {
1016         struct qedf_rport *fcport;
1017         struct fc_rport_priv *rdata;
1018
1019         rcu_read_lock();
1020         list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
1021                 rdata = fcport->rdata;
1022                 if (rdata == NULL)
1023                         continue;
1024                 if (rdata->ids.port_id == port_id) {
1025                         rcu_read_unlock();
1026                         return fcport;
1027                 }
1028         }
1029         rcu_read_unlock();
1030
1031         /* Return NULL to caller to let them know fcport was not found */
1032         return NULL;
1033 }
1034
1035 /* Transmits an ELS frame over an offloaded session */
1036 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp)
1037 {
1038         struct fc_frame_header *fh;
1039         int rc = 0;
1040
1041         fh = fc_frame_header_get(fp);
1042         if ((fh->fh_type == FC_TYPE_ELS) &&
1043             (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
1044                 switch (fc_frame_payload_op(fp)) {
1045                 case ELS_ADISC:
1046                         qedf_send_adisc(fcport, fp);
1047                         rc = 1;
1048                         break;
1049                 }
1050         }
1051
1052         return rc;
1053 }
1054
1055 /*
1056  * qedf_xmit - qedf FCoE frame transmit function
1057  */
1058 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp)
1059 {
1060         struct fc_lport         *base_lport;
1061         struct qedf_ctx         *qedf;
1062         struct ethhdr           *eh;
1063         struct fcoe_crc_eof     *cp;
1064         struct sk_buff          *skb;
1065         struct fc_frame_header  *fh;
1066         struct fcoe_hdr         *hp;
1067         u8                      sof, eof;
1068         u32                     crc;
1069         unsigned int            hlen, tlen, elen;
1070         int                     wlen;
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         this_cpu_inc(lport->stats->TxFrames);
1219         this_cpu_add(lport->stats->TxWords, wlen);
1220
1221         /* Get VLAN ID from skb for printing purposes */
1222         __vlan_hwaccel_get_tag(skb, &vlan_tci);
1223
1224         /* send down to lld */
1225         fr_dev(fp) = lport;
1226         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: "
1227             "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n",
1228             ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type,
1229             vlan_tci);
1230         if (qedf_dump_frames)
1231                 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
1232                     1, skb->data, skb->len, false);
1233         rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, 0);
1234         if (rc) {
1235                 QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n", rc);
1236                 kfree_skb(skb);
1237                 return rc;
1238         }
1239
1240         return 0;
1241 }
1242
1243 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1244 {
1245         int rval = 0;
1246         u32 *pbl;
1247         dma_addr_t page;
1248         int num_pages;
1249
1250         /* Calculate appropriate queue and PBL sizes */
1251         fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
1252         fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE);
1253         fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) *
1254             sizeof(void *);
1255         fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE;
1256
1257         fcport->sq = dma_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1258                                         &fcport->sq_dma, GFP_KERNEL);
1259         if (!fcport->sq) {
1260                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n");
1261                 rval = 1;
1262                 goto out;
1263         }
1264
1265         fcport->sq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
1266                                             fcport->sq_pbl_size,
1267                                             &fcport->sq_pbl_dma, GFP_KERNEL);
1268         if (!fcport->sq_pbl) {
1269                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n");
1270                 rval = 1;
1271                 goto out_free_sq;
1272         }
1273
1274         /* Create PBL */
1275         num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE;
1276         page = fcport->sq_dma;
1277         pbl = (u32 *)fcport->sq_pbl;
1278
1279         while (num_pages--) {
1280                 *pbl = U64_LO(page);
1281                 pbl++;
1282                 *pbl = U64_HI(page);
1283                 pbl++;
1284                 page += QEDF_PAGE_SIZE;
1285         }
1286
1287         return rval;
1288
1289 out_free_sq:
1290         dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq,
1291             fcport->sq_dma);
1292 out:
1293         return rval;
1294 }
1295
1296 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1297 {
1298         if (fcport->sq_pbl)
1299                 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size,
1300                     fcport->sq_pbl, fcport->sq_pbl_dma);
1301         if (fcport->sq)
1302                 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1303                     fcport->sq, fcport->sq_dma);
1304 }
1305
1306 static int qedf_offload_connection(struct qedf_ctx *qedf,
1307         struct qedf_rport *fcport)
1308 {
1309         struct qed_fcoe_params_offload conn_info;
1310         u32 port_id;
1311         int rval;
1312         uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe));
1313
1314         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection "
1315                    "portid=%06x.\n", fcport->rdata->ids.port_id);
1316         rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle,
1317             &fcport->fw_cid, &fcport->p_doorbell);
1318         if (rval) {
1319                 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection "
1320                            "for portid=%06x.\n", fcport->rdata->ids.port_id);
1321                 rval = 1; /* For some reason qed returns 0 on failure here */
1322                 goto out;
1323         }
1324
1325         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x "
1326                    "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id,
1327                    fcport->fw_cid, fcport->handle);
1328
1329         memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload));
1330
1331         /* Fill in the offload connection info */
1332         conn_info.sq_pbl_addr = fcport->sq_pbl_dma;
1333
1334         conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl);
1335         conn_info.sq_next_page_addr =
1336             (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8));
1337
1338         /* Need to use our FCoE MAC for the offload session */
1339         ether_addr_copy(conn_info.src_mac, qedf->data_src_addr);
1340
1341         ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr);
1342
1343         conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size;
1344         conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov;
1345         conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */
1346         conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size;
1347
1348         /* Set VLAN data */
1349         conn_info.vlan_tag = qedf->vlan_id <<
1350             FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT;
1351         conn_info.vlan_tag |=
1352             qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT;
1353         conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK <<
1354             FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT);
1355
1356         /* Set host port source id */
1357         port_id = fc_host_port_id(qedf->lport->host);
1358         fcport->sid = port_id;
1359         conn_info.s_id.addr_hi = (port_id & 0x000000FF);
1360         conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1361         conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1362
1363         conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq;
1364
1365         /* Set remote port destination id */
1366         port_id = fcport->rdata->rport->port_id;
1367         conn_info.d_id.addr_hi = (port_id & 0x000000FF);
1368         conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1369         conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1370
1371         conn_info.def_q_idx = 0; /* Default index for send queue? */
1372
1373         /* Set FC-TAPE specific flags if needed */
1374         if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) {
1375                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN,
1376                     "Enable CONF, REC for portid=%06x.\n",
1377                     fcport->rdata->ids.port_id);
1378                 conn_info.flags |= 1 <<
1379                     FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT;
1380                 conn_info.flags |=
1381                     ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
1382                     FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT;
1383         }
1384
1385         rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info);
1386         if (rval) {
1387                 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection "
1388                            "for portid=%06x.\n", fcport->rdata->ids.port_id);
1389                 goto out_free_conn;
1390         } else
1391                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload "
1392                            "succeeded portid=%06x total_sqe=%d.\n",
1393                            fcport->rdata->ids.port_id, total_sqe);
1394
1395         spin_lock_init(&fcport->rport_lock);
1396         atomic_set(&fcport->free_sqes, total_sqe);
1397         return 0;
1398 out_free_conn:
1399         qed_ops->release_conn(qedf->cdev, fcport->handle);
1400 out:
1401         return rval;
1402 }
1403
1404 #define QEDF_TERM_BUFF_SIZE             10
1405 static void qedf_upload_connection(struct qedf_ctx *qedf,
1406         struct qedf_rport *fcport)
1407 {
1408         void *term_params;
1409         dma_addr_t term_params_dma;
1410
1411         /* Term params needs to be a DMA coherent buffer as qed shared the
1412          * physical DMA address with the firmware. The buffer may be used in
1413          * the receive path so we may eventually have to move this.
1414          */
1415         term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE,
1416                 &term_params_dma, GFP_KERNEL);
1417         if (!term_params)
1418                 return;
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         snprintf(fc_host_vendor_identifier(lport->host),
1722                 FC_VENDOR_IDENTIFIER, "%s", "Marvell");
1723
1724 }
1725
1726 static int qedf_lport_setup(struct qedf_ctx *qedf)
1727 {
1728         struct fc_lport *lport = qedf->lport;
1729
1730         lport->link_up = 0;
1731         lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1732         lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1733         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1734             FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1735         lport->boot_time = jiffies;
1736         lport->e_d_tov = 2 * 1000;
1737         lport->r_a_tov = 10 * 1000;
1738
1739         /* Set NPIV support */
1740         lport->does_npiv = 1;
1741         fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV;
1742
1743         fc_set_wwnn(lport, qedf->wwnn);
1744         fc_set_wwpn(lport, qedf->wwpn);
1745
1746         if (fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0)) {
1747                 QEDF_ERR(&qedf->dbg_ctx,
1748                          "fcoe_libfc_config failed.\n");
1749                 return -ENOMEM;
1750         }
1751
1752         /* Allocate the exchange manager */
1753         fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_PARAMS_NUM_TASKS,
1754                           0xfffe, NULL);
1755
1756         if (fc_lport_init_stats(lport))
1757                 return -ENOMEM;
1758
1759         /* Finish lport config */
1760         fc_lport_config(lport);
1761
1762         /* Set max frame size */
1763         fc_set_mfs(lport, QEDF_MFS);
1764         fc_host_maxframe_size(lport->host) = lport->mfs;
1765
1766         /* Set default dev_loss_tmo based on module parameter */
1767         fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo;
1768
1769         /* Set symbolic node name */
1770         if (qedf->pdev->device == QL45xxx)
1771                 snprintf(fc_host_symbolic_name(lport->host), 256,
1772                         "Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION);
1773
1774         if (qedf->pdev->device == QL41xxx)
1775                 snprintf(fc_host_symbolic_name(lport->host), 256,
1776                         "Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION);
1777
1778         qedf_setup_fdmi(qedf);
1779
1780         return 0;
1781 }
1782
1783 /*
1784  * NPIV functions
1785  */
1786
1787 static int qedf_vport_libfc_config(struct fc_vport *vport,
1788         struct fc_lport *lport)
1789 {
1790         lport->link_up = 0;
1791         lport->qfull = 0;
1792         lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1793         lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1794         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1795             FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1796         lport->boot_time = jiffies;
1797         lport->e_d_tov = 2 * 1000;
1798         lport->r_a_tov = 10 * 1000;
1799         lport->does_npiv = 1; /* Temporary until we add NPIV support */
1800
1801         /* Allocate stats for vport */
1802         if (fc_lport_init_stats(lport))
1803                 return -ENOMEM;
1804
1805         /* Finish lport config */
1806         fc_lport_config(lport);
1807
1808         /* offload related configuration */
1809         lport->crc_offload = 0;
1810         lport->seq_offload = 0;
1811         lport->lro_enabled = 0;
1812         lport->lro_xid = 0;
1813         lport->lso_max = 0;
1814
1815         return 0;
1816 }
1817
1818 static int qedf_vport_create(struct fc_vport *vport, bool disabled)
1819 {
1820         struct Scsi_Host *shost = vport_to_shost(vport);
1821         struct fc_lport *n_port = shost_priv(shost);
1822         struct fc_lport *vn_port;
1823         struct qedf_ctx *base_qedf = lport_priv(n_port);
1824         struct qedf_ctx *vport_qedf;
1825
1826         char buf[32];
1827         int rc = 0;
1828
1829         rc = fcoe_validate_vport_create(vport);
1830         if (rc) {
1831                 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1832                 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, "
1833                            "WWPN (0x%s) already exists.\n", buf);
1834                 return rc;
1835         }
1836
1837         if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) {
1838                 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport "
1839                            "because link is not up.\n");
1840                 return -EIO;
1841         }
1842
1843         vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx));
1844         if (!vn_port) {
1845                 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport "
1846                            "for vport.\n");
1847                 return -ENOMEM;
1848         }
1849
1850         fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1851         QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n",
1852             buf);
1853
1854         /* Copy some fields from base_qedf */
1855         vport_qedf = lport_priv(vn_port);
1856         memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx));
1857
1858         /* Set qedf data specific to this vport */
1859         vport_qedf->lport = vn_port;
1860         /* Use same hba_lock as base_qedf */
1861         vport_qedf->hba_lock = base_qedf->hba_lock;
1862         vport_qedf->pdev = base_qedf->pdev;
1863         vport_qedf->cmd_mgr = base_qedf->cmd_mgr;
1864         init_completion(&vport_qedf->flogi_compl);
1865         INIT_LIST_HEAD(&vport_qedf->fcports);
1866         INIT_DELAYED_WORK(&vport_qedf->stag_work, qedf_stag_change_work);
1867
1868         rc = qedf_vport_libfc_config(vport, vn_port);
1869         if (rc) {
1870                 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory "
1871                     "for lport stats.\n");
1872                 goto err;
1873         }
1874
1875         fc_set_wwnn(vn_port, vport->node_name);
1876         fc_set_wwpn(vn_port, vport->port_name);
1877         vport_qedf->wwnn = vn_port->wwnn;
1878         vport_qedf->wwpn = vn_port->wwpn;
1879
1880         vn_port->host->transportt = qedf_fc_vport_transport_template;
1881         vn_port->host->can_queue = FCOE_PARAMS_NUM_TASKS;
1882         vn_port->host->max_lun = qedf_max_lun;
1883         vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD;
1884         vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN;
1885         vn_port->host->max_id = QEDF_MAX_SESSIONS;
1886
1887         rc = scsi_add_host(vn_port->host, &vport->dev);
1888         if (rc) {
1889                 QEDF_WARN(&base_qedf->dbg_ctx,
1890                           "Error adding Scsi_Host rc=0x%x.\n", rc);
1891                 goto err;
1892         }
1893
1894         /* Set default dev_loss_tmo based on module parameter */
1895         fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo;
1896
1897         /* Init libfc stuffs */
1898         memcpy(&vn_port->tt, &qedf_lport_template,
1899                 sizeof(qedf_lport_template));
1900         fc_exch_init(vn_port);
1901         fc_elsct_init(vn_port);
1902         fc_lport_init(vn_port);
1903         fc_disc_init(vn_port);
1904         fc_disc_config(vn_port, vn_port);
1905
1906
1907         /* Allocate the exchange manager */
1908         shost = vport_to_shost(vport);
1909         n_port = shost_priv(shost);
1910         fc_exch_mgr_list_clone(n_port, vn_port);
1911
1912         /* Set max frame size */
1913         fc_set_mfs(vn_port, QEDF_MFS);
1914
1915         fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN;
1916
1917         if (disabled) {
1918                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1919         } else {
1920                 vn_port->boot_time = jiffies;
1921                 fc_fabric_login(vn_port);
1922                 fc_vport_setlink(vn_port);
1923         }
1924
1925         /* Set symbolic node name */
1926         if (base_qedf->pdev->device == QL45xxx)
1927                 snprintf(fc_host_symbolic_name(vn_port->host), 256,
1928                          "Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION);
1929
1930         if (base_qedf->pdev->device == QL41xxx)
1931                 snprintf(fc_host_symbolic_name(vn_port->host), 256,
1932                          "Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION);
1933
1934         /* Set supported speed */
1935         fc_host_supported_speeds(vn_port->host) = n_port->link_supported_speeds;
1936
1937         /* Set speed */
1938         vn_port->link_speed = n_port->link_speed;
1939
1940         /* Set port type */
1941         fc_host_port_type(vn_port->host) = FC_PORTTYPE_NPIV;
1942
1943         /* Set maxframe size */
1944         fc_host_maxframe_size(vn_port->host) = n_port->mfs;
1945
1946         QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n",
1947                    vn_port);
1948
1949         /* Set up debug context for vport */
1950         vport_qedf->dbg_ctx.host_no = vn_port->host->host_no;
1951         vport_qedf->dbg_ctx.pdev = base_qedf->pdev;
1952
1953         return 0;
1954
1955 err:
1956         scsi_host_put(vn_port->host);
1957         return rc;
1958 }
1959
1960 static int qedf_vport_destroy(struct fc_vport *vport)
1961 {
1962         struct Scsi_Host *shost = vport_to_shost(vport);
1963         struct fc_lport *n_port = shost_priv(shost);
1964         struct fc_lport *vn_port = vport->dd_data;
1965         struct qedf_ctx *qedf = lport_priv(vn_port);
1966
1967         if (!qedf) {
1968                 QEDF_ERR(NULL, "qedf is NULL.\n");
1969                 goto out;
1970         }
1971
1972         /* Set unloading bit on vport qedf_ctx to prevent more I/O */
1973         set_bit(QEDF_UNLOADING, &qedf->flags);
1974
1975         mutex_lock(&n_port->lp_mutex);
1976         list_del(&vn_port->list);
1977         mutex_unlock(&n_port->lp_mutex);
1978
1979         fc_fabric_logoff(vn_port);
1980         fc_lport_destroy(vn_port);
1981
1982         /* Detach from scsi-ml */
1983         fc_remove_host(vn_port->host);
1984         scsi_remove_host(vn_port->host);
1985
1986         /*
1987          * Only try to release the exchange manager if the vn_port
1988          * configuration is complete.
1989          */
1990         if (vn_port->state == LPORT_ST_READY)
1991                 fc_exch_mgr_free(vn_port);
1992
1993         /* Free memory used by statistical counters */
1994         fc_lport_free_stats(vn_port);
1995
1996         /* Release Scsi_Host */
1997         scsi_host_put(vn_port->host);
1998
1999 out:
2000         return 0;
2001 }
2002
2003 static int qedf_vport_disable(struct fc_vport *vport, bool disable)
2004 {
2005         struct fc_lport *lport = vport->dd_data;
2006
2007         if (disable) {
2008                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
2009                 fc_fabric_logoff(lport);
2010         } else {
2011                 lport->boot_time = jiffies;
2012                 fc_fabric_login(lport);
2013                 fc_vport_setlink(lport);
2014         }
2015         return 0;
2016 }
2017
2018 /*
2019  * During removal we need to wait for all the vports associated with a port
2020  * to be destroyed so we avoid a race condition where libfc is still trying
2021  * to reap vports while the driver remove function has already reaped the
2022  * driver contexts associated with the physical port.
2023  */
2024 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf)
2025 {
2026         struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host);
2027
2028         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
2029             "Entered.\n");
2030         while (fc_host->npiv_vports_inuse > 0) {
2031                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
2032                     "Waiting for all vports to be reaped.\n");
2033                 msleep(1000);
2034         }
2035 }
2036
2037 /**
2038  * qedf_fcoe_reset - Resets the fcoe
2039  *
2040  * @shost: shost the reset is from
2041  *
2042  * Returns: always 0
2043  */
2044 static int qedf_fcoe_reset(struct Scsi_Host *shost)
2045 {
2046         struct fc_lport *lport = shost_priv(shost);
2047
2048         qedf_ctx_soft_reset(lport);
2049         return 0;
2050 }
2051
2052 static void qedf_get_host_port_id(struct Scsi_Host *shost)
2053 {
2054         struct fc_lport *lport = shost_priv(shost);
2055
2056         fc_host_port_id(shost) = lport->port_id;
2057 }
2058
2059 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host
2060         *shost)
2061 {
2062         struct fc_host_statistics *qedf_stats;
2063         struct fc_lport *lport = shost_priv(shost);
2064         struct qedf_ctx *qedf = lport_priv(lport);
2065         struct qed_fcoe_stats *fw_fcoe_stats;
2066
2067         qedf_stats = fc_get_host_stats(shost);
2068
2069         /* We don't collect offload stats for specific NPIV ports */
2070         if (lport->vport)
2071                 goto out;
2072
2073         fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL);
2074         if (!fw_fcoe_stats) {
2075                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for "
2076                     "fw_fcoe_stats.\n");
2077                 goto out;
2078         }
2079
2080         mutex_lock(&qedf->stats_mutex);
2081
2082         /* Query firmware for offload stats */
2083         qed_ops->get_stats(qedf->cdev, fw_fcoe_stats);
2084
2085         /*
2086          * The expectation is that we add our offload stats to the stats
2087          * being maintained by libfc each time the fc_get_host_status callback
2088          * is invoked. The additions are not carried over for each call to
2089          * the fc_get_host_stats callback.
2090          */
2091         qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt +
2092             fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt +
2093             fw_fcoe_stats->fcoe_tx_other_pkt_cnt;
2094         qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt +
2095             fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt +
2096             fw_fcoe_stats->fcoe_rx_other_pkt_cnt;
2097         qedf_stats->fcp_input_megabytes +=
2098             do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000);
2099         qedf_stats->fcp_output_megabytes +=
2100             do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000);
2101         qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4;
2102         qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4;
2103         qedf_stats->invalid_crc_count +=
2104             fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt;
2105         qedf_stats->dumped_frames =
2106             fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
2107         qedf_stats->error_frames +=
2108             fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
2109         qedf_stats->fcp_input_requests += qedf->input_requests;
2110         qedf_stats->fcp_output_requests += qedf->output_requests;
2111         qedf_stats->fcp_control_requests += qedf->control_requests;
2112         qedf_stats->fcp_packet_aborts += qedf->packet_aborts;
2113         qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures;
2114
2115         mutex_unlock(&qedf->stats_mutex);
2116         kfree(fw_fcoe_stats);
2117 out:
2118         return qedf_stats;
2119 }
2120
2121 static struct fc_function_template qedf_fc_transport_fn = {
2122         .show_host_node_name = 1,
2123         .show_host_port_name = 1,
2124         .show_host_supported_classes = 1,
2125         .show_host_supported_fc4s = 1,
2126         .show_host_active_fc4s = 1,
2127         .show_host_maxframe_size = 1,
2128
2129         .get_host_port_id = qedf_get_host_port_id,
2130         .show_host_port_id = 1,
2131         .show_host_supported_speeds = 1,
2132         .get_host_speed = fc_get_host_speed,
2133         .show_host_speed = 1,
2134         .show_host_port_type = 1,
2135         .get_host_port_state = fc_get_host_port_state,
2136         .show_host_port_state = 1,
2137         .show_host_symbolic_name = 1,
2138
2139         /*
2140          * Tell FC transport to allocate enough space to store the backpointer
2141          * for the associate qedf_rport struct.
2142          */
2143         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2144                                 sizeof(struct qedf_rport)),
2145         .show_rport_maxframe_size = 1,
2146         .show_rport_supported_classes = 1,
2147         .show_host_fabric_name = 1,
2148         .show_starget_node_name = 1,
2149         .show_starget_port_name = 1,
2150         .show_starget_port_id = 1,
2151         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2152         .show_rport_dev_loss_tmo = 1,
2153         .get_fc_host_stats = qedf_fc_get_host_stats,
2154         .issue_fc_host_lip = qedf_fcoe_reset,
2155         .vport_create = qedf_vport_create,
2156         .vport_delete = qedf_vport_destroy,
2157         .vport_disable = qedf_vport_disable,
2158         .bsg_request = fc_lport_bsg_request,
2159 };
2160
2161 static struct fc_function_template qedf_fc_vport_transport_fn = {
2162         .show_host_node_name = 1,
2163         .show_host_port_name = 1,
2164         .show_host_supported_classes = 1,
2165         .show_host_supported_fc4s = 1,
2166         .show_host_active_fc4s = 1,
2167         .show_host_maxframe_size = 1,
2168         .show_host_port_id = 1,
2169         .show_host_supported_speeds = 1,
2170         .get_host_speed = fc_get_host_speed,
2171         .show_host_speed = 1,
2172         .show_host_port_type = 1,
2173         .get_host_port_state = fc_get_host_port_state,
2174         .show_host_port_state = 1,
2175         .show_host_symbolic_name = 1,
2176         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2177                                 sizeof(struct qedf_rport)),
2178         .show_rport_maxframe_size = 1,
2179         .show_rport_supported_classes = 1,
2180         .show_host_fabric_name = 1,
2181         .show_starget_node_name = 1,
2182         .show_starget_port_name = 1,
2183         .show_starget_port_id = 1,
2184         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2185         .show_rport_dev_loss_tmo = 1,
2186         .get_fc_host_stats = fc_get_host_stats,
2187         .issue_fc_host_lip = qedf_fcoe_reset,
2188         .bsg_request = fc_lport_bsg_request,
2189 };
2190
2191 static bool qedf_fp_has_work(struct qedf_fastpath *fp)
2192 {
2193         struct qedf_ctx *qedf = fp->qedf;
2194         struct global_queue *que;
2195         struct qed_sb_info *sb_info = fp->sb_info;
2196         struct status_block *sb = sb_info->sb_virt;
2197         u16 prod_idx;
2198
2199         /* Get the pointer to the global CQ this completion is on */
2200         que = qedf->global_queues[fp->sb_id];
2201
2202         /* Be sure all responses have been written to PI */
2203         rmb();
2204
2205         /* Get the current firmware producer index */
2206         prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
2207
2208         return (que->cq_prod_idx != prod_idx);
2209 }
2210
2211 /*
2212  * Interrupt handler code.
2213  */
2214
2215 /* Process completion queue and copy CQE contents for deferred processesing
2216  *
2217  * Return true if we should wake the I/O thread, false if not.
2218  */
2219 static bool qedf_process_completions(struct qedf_fastpath *fp)
2220 {
2221         struct qedf_ctx *qedf = fp->qedf;
2222         struct qed_sb_info *sb_info = fp->sb_info;
2223         struct status_block *sb = sb_info->sb_virt;
2224         struct global_queue *que;
2225         u16 prod_idx;
2226         struct fcoe_cqe *cqe;
2227         struct qedf_io_work *io_work;
2228         unsigned int cpu;
2229         struct qedf_ioreq *io_req = NULL;
2230         u16 xid;
2231         u16 new_cqes;
2232         u32 comp_type;
2233
2234         /* Get the current firmware producer index */
2235         prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
2236
2237         /* Get the pointer to the global CQ this completion is on */
2238         que = qedf->global_queues[fp->sb_id];
2239
2240         /* Calculate the amount of new elements since last processing */
2241         new_cqes = (prod_idx >= que->cq_prod_idx) ?
2242             (prod_idx - que->cq_prod_idx) :
2243             0x10000 - que->cq_prod_idx + prod_idx;
2244
2245         /* Save producer index */
2246         que->cq_prod_idx = prod_idx;
2247
2248         while (new_cqes) {
2249                 fp->completions++;
2250                 cqe = &que->cq[que->cq_cons_idx];
2251
2252                 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2253                     FCOE_CQE_CQE_TYPE_MASK;
2254
2255                 /*
2256                  * Process unsolicited CQEs directly in the interrupt handler
2257                  * sine we need the fastpath ID
2258                  */
2259                 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) {
2260                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL,
2261                            "Unsolicated CQE.\n");
2262                         qedf_process_unsol_compl(qedf, fp->sb_id, cqe);
2263                         /*
2264                          * Don't add a work list item.  Increment consumer
2265                          * consumer index and move on.
2266                          */
2267                         goto inc_idx;
2268                 }
2269
2270                 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2271                 io_req = &qedf->cmd_mgr->cmds[xid];
2272
2273                 /*
2274                  * Figure out which percpu thread we should queue this I/O
2275                  * on.
2276                  */
2277                 if (!io_req)
2278                         /* If there is not io_req assocated with this CQE
2279                          * just queue it on CPU 0
2280                          */
2281                         cpu = 0;
2282                 else {
2283                         cpu = io_req->cpu;
2284                         io_req->int_cpu = smp_processor_id();
2285                 }
2286
2287                 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC);
2288                 if (!io_work) {
2289                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate "
2290                                    "work for I/O completion.\n");
2291                         continue;
2292                 }
2293                 memset(io_work, 0, sizeof(struct qedf_io_work));
2294
2295                 INIT_WORK(&io_work->work, qedf_fp_io_handler);
2296
2297                 /* Copy contents of CQE for deferred processing */
2298                 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe));
2299
2300                 io_work->qedf = fp->qedf;
2301                 io_work->fp = NULL; /* Only used for unsolicited frames */
2302
2303                 queue_work_on(cpu, qedf_io_wq, &io_work->work);
2304
2305 inc_idx:
2306                 que->cq_cons_idx++;
2307                 if (que->cq_cons_idx == fp->cq_num_entries)
2308                         que->cq_cons_idx = 0;
2309                 new_cqes--;
2310         }
2311
2312         return true;
2313 }
2314
2315
2316 /* MSI-X fastpath handler code */
2317 static irqreturn_t qedf_msix_handler(int irq, void *dev_id)
2318 {
2319         struct qedf_fastpath *fp = dev_id;
2320
2321         if (!fp) {
2322                 QEDF_ERR(NULL, "fp is null.\n");
2323                 return IRQ_HANDLED;
2324         }
2325         if (!fp->sb_info) {
2326                 QEDF_ERR(NULL, "fp->sb_info in null.");
2327                 return IRQ_HANDLED;
2328         }
2329
2330         /*
2331          * Disable interrupts for this status block while we process new
2332          * completions
2333          */
2334         qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/);
2335
2336         while (1) {
2337                 qedf_process_completions(fp);
2338
2339                 if (qedf_fp_has_work(fp) == 0) {
2340                         /* Update the sb information */
2341                         qed_sb_update_sb_idx(fp->sb_info);
2342
2343                         /* Check for more work */
2344                         rmb();
2345
2346                         if (qedf_fp_has_work(fp) == 0) {
2347                                 /* Re-enable interrupts */
2348                                 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
2349                                 return IRQ_HANDLED;
2350                         }
2351                 }
2352         }
2353
2354         /* Do we ever want to break out of above loop? */
2355         return IRQ_HANDLED;
2356 }
2357
2358 /* simd handler for MSI/INTa */
2359 static void qedf_simd_int_handler(void *cookie)
2360 {
2361         /* Cookie is qedf_ctx struct */
2362         struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2363
2364         QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf);
2365 }
2366
2367 #define QEDF_SIMD_HANDLER_NUM           0
2368 static void qedf_sync_free_irqs(struct qedf_ctx *qedf)
2369 {
2370         int i;
2371         u16 vector_idx = 0;
2372         u32 vector;
2373
2374         if (qedf->int_info.msix_cnt) {
2375                 for (i = 0; i < qedf->int_info.used_cnt; i++) {
2376                         vector_idx = i * qedf->dev_info.common.num_hwfns +
2377                                 qed_ops->common->get_affin_hwfn_idx(qedf->cdev);
2378                         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
2379                                   "Freeing IRQ #%d vector_idx=%d.\n",
2380                                   i, vector_idx);
2381                         vector = qedf->int_info.msix[vector_idx].vector;
2382                         synchronize_irq(vector);
2383                         irq_set_affinity_hint(vector, NULL);
2384                         irq_set_affinity_notifier(vector, NULL);
2385                         free_irq(vector, &qedf->fp_array[i]);
2386                 }
2387         } else
2388                 qed_ops->common->simd_handler_clean(qedf->cdev,
2389                     QEDF_SIMD_HANDLER_NUM);
2390
2391         qedf->int_info.used_cnt = 0;
2392         qed_ops->common->set_fp_int(qedf->cdev, 0);
2393 }
2394
2395 static int qedf_request_msix_irq(struct qedf_ctx *qedf)
2396 {
2397         int i, rc, cpu;
2398         u16 vector_idx = 0;
2399         u32 vector;
2400
2401         cpu = cpumask_first(cpu_online_mask);
2402         for (i = 0; i < qedf->num_queues; i++) {
2403                 vector_idx = i * qedf->dev_info.common.num_hwfns +
2404                         qed_ops->common->get_affin_hwfn_idx(qedf->cdev);
2405                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
2406                           "Requesting IRQ #%d vector_idx=%d.\n",
2407                           i, vector_idx);
2408                 vector = qedf->int_info.msix[vector_idx].vector;
2409                 rc = request_irq(vector, qedf_msix_handler, 0, "qedf",
2410                                  &qedf->fp_array[i]);
2411
2412                 if (rc) {
2413                         QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n");
2414                         qedf_sync_free_irqs(qedf);
2415                         return rc;
2416                 }
2417
2418                 qedf->int_info.used_cnt++;
2419                 rc = irq_set_affinity_hint(vector, get_cpu_mask(cpu));
2420                 cpu = cpumask_next(cpu, cpu_online_mask);
2421         }
2422
2423         return 0;
2424 }
2425
2426 static int qedf_setup_int(struct qedf_ctx *qedf)
2427 {
2428         int rc = 0;
2429
2430         /*
2431          * Learn interrupt configuration
2432          */
2433         rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus());
2434         if (rc <= 0)
2435                 return 0;
2436
2437         rc  = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info);
2438         if (rc)
2439                 return 0;
2440
2441         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = "
2442                    "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt,
2443                    num_online_cpus());
2444
2445         if (qedf->int_info.msix_cnt)
2446                 return qedf_request_msix_irq(qedf);
2447
2448         qed_ops->common->simd_handler_config(qedf->cdev, &qedf,
2449             QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler);
2450         qedf->int_info.used_cnt = 1;
2451
2452         QEDF_ERR(&qedf->dbg_ctx,
2453                  "Cannot load driver due to a lack of MSI-X vectors.\n");
2454         return -EINVAL;
2455 }
2456
2457 /* Main function for libfc frame reception */
2458 static void qedf_recv_frame(struct qedf_ctx *qedf,
2459         struct sk_buff *skb)
2460 {
2461         u32 fr_len;
2462         struct fc_lport *lport;
2463         struct fc_frame_header *fh;
2464         struct fcoe_crc_eof crc_eof;
2465         struct fc_frame *fp;
2466         u8 *mac = NULL;
2467         u8 *dest_mac = NULL;
2468         struct fcoe_hdr *hp;
2469         struct qedf_rport *fcport;
2470         struct fc_lport *vn_port;
2471         u32 f_ctl;
2472
2473         lport = qedf->lport;
2474         if (lport == NULL || lport->state == LPORT_ST_DISABLED) {
2475                 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n");
2476                 kfree_skb(skb);
2477                 return;
2478         }
2479
2480         if (skb_is_nonlinear(skb))
2481                 skb_linearize(skb);
2482         mac = eth_hdr(skb)->h_source;
2483         dest_mac = eth_hdr(skb)->h_dest;
2484
2485         /* Pull the header */
2486         hp = (struct fcoe_hdr *)skb->data;
2487         fh = (struct fc_frame_header *) skb_transport_header(skb);
2488         skb_pull(skb, sizeof(struct fcoe_hdr));
2489         fr_len = skb->len - sizeof(struct fcoe_crc_eof);
2490
2491         fp = (struct fc_frame *)skb;
2492         fc_frame_init(fp);
2493         fr_dev(fp) = lport;
2494         fr_sof(fp) = hp->fcoe_sof;
2495         if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
2496                 QEDF_INFO(NULL, QEDF_LOG_LL2, "skb_copy_bits failed.\n");
2497                 kfree_skb(skb);
2498                 return;
2499         }
2500         fr_eof(fp) = crc_eof.fcoe_eof;
2501         fr_crc(fp) = crc_eof.fcoe_crc32;
2502         if (pskb_trim(skb, fr_len)) {
2503                 QEDF_INFO(NULL, QEDF_LOG_LL2, "pskb_trim failed.\n");
2504                 kfree_skb(skb);
2505                 return;
2506         }
2507
2508         fh = fc_frame_header_get(fp);
2509
2510         /*
2511          * Invalid frame filters.
2512          */
2513
2514         if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
2515             fh->fh_type == FC_TYPE_FCP) {
2516                 /* Drop FCP data. We dont this in L2 path */
2517                 kfree_skb(skb);
2518                 return;
2519         }
2520         if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
2521             fh->fh_type == FC_TYPE_ELS) {
2522                 switch (fc_frame_payload_op(fp)) {
2523                 case ELS_LOGO:
2524                         if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
2525                                 /* drop non-FIP LOGO */
2526                                 kfree_skb(skb);
2527                                 return;
2528                         }
2529                         break;
2530                 }
2531         }
2532
2533         if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
2534                 /* Drop incoming ABTS */
2535                 kfree_skb(skb);
2536                 return;
2537         }
2538
2539         if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
2540                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2541                     "FC frame d_id mismatch with MAC %pM.\n", dest_mac);
2542                 kfree_skb(skb);
2543                 return;
2544         }
2545
2546         if (qedf->ctlr.state) {
2547                 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) {
2548                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2549                             "Wrong source address: mac:%pM dest_addr:%pM.\n",
2550                             mac, qedf->ctlr.dest_addr);
2551                         kfree_skb(skb);
2552                         return;
2553                 }
2554         }
2555
2556         vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
2557
2558         /*
2559          * If the destination ID from the frame header does not match what we
2560          * have on record for lport and the search for a NPIV port came up
2561          * empty then this is not addressed to our port so simply drop it.
2562          */
2563         if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
2564                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2565                           "Dropping frame due to destination mismatch: lport->port_id=0x%x fh->d_id=0x%x.\n",
2566                           lport->port_id, ntoh24(fh->fh_d_id));
2567                 kfree_skb(skb);
2568                 return;
2569         }
2570
2571         f_ctl = ntoh24(fh->fh_f_ctl);
2572         if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) &&
2573             (f_ctl & FC_FC_EX_CTX)) {
2574                 /* Drop incoming ABTS response that has both SEQ/EX CTX set */
2575                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2576                           "Dropping ABTS response as both SEQ/EX CTX set.\n");
2577                 kfree_skb(skb);
2578                 return;
2579         }
2580
2581         /*
2582          * If a connection is uploading, drop incoming FCoE frames as there
2583          * is a small window where we could try to return a frame while libfc
2584          * is trying to clean things up.
2585          */
2586
2587         /* Get fcport associated with d_id if it exists */
2588         fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
2589
2590         if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
2591             &fcport->flags)) {
2592                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2593                     "Connection uploading, dropping fp=%p.\n", fp);
2594                 kfree_skb(skb);
2595                 return;
2596         }
2597
2598         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: "
2599             "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp,
2600             ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl,
2601             fh->fh_type);
2602         if (qedf_dump_frames)
2603                 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
2604                     1, skb->data, skb->len, false);
2605         fc_exch_recv(lport, fp);
2606 }
2607
2608 static void qedf_ll2_process_skb(struct work_struct *work)
2609 {
2610         struct qedf_skb_work *skb_work =
2611             container_of(work, struct qedf_skb_work, work);
2612         struct qedf_ctx *qedf = skb_work->qedf;
2613         struct sk_buff *skb = skb_work->skb;
2614         struct ethhdr *eh;
2615
2616         if (!qedf) {
2617                 QEDF_ERR(NULL, "qedf is NULL\n");
2618                 goto err_out;
2619         }
2620
2621         eh = (struct ethhdr *)skb->data;
2622
2623         /* Undo VLAN encapsulation */
2624         if (eh->h_proto == htons(ETH_P_8021Q)) {
2625                 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
2626                 eh = skb_pull(skb, VLAN_HLEN);
2627                 skb_reset_mac_header(skb);
2628         }
2629
2630         /*
2631          * Process either a FIP frame or FCoE frame based on the
2632          * protocol value.  If it's not either just drop the
2633          * frame.
2634          */
2635         if (eh->h_proto == htons(ETH_P_FIP)) {
2636                 qedf_fip_recv(qedf, skb);
2637                 goto out;
2638         } else if (eh->h_proto == htons(ETH_P_FCOE)) {
2639                 __skb_pull(skb, ETH_HLEN);
2640                 qedf_recv_frame(qedf, skb);
2641                 goto out;
2642         } else
2643                 goto err_out;
2644
2645 err_out:
2646         kfree_skb(skb);
2647 out:
2648         kfree(skb_work);
2649         return;
2650 }
2651
2652 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb,
2653         u32 arg1, u32 arg2)
2654 {
2655         struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2656         struct qedf_skb_work *skb_work;
2657
2658         if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
2659                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2660                           "Dropping frame as link state is down.\n");
2661                 kfree_skb(skb);
2662                 return 0;
2663         }
2664
2665         skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC);
2666         if (!skb_work) {
2667                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so "
2668                            "dropping frame.\n");
2669                 kfree_skb(skb);
2670                 return 0;
2671         }
2672
2673         INIT_WORK(&skb_work->work, qedf_ll2_process_skb);
2674         skb_work->skb = skb;
2675         skb_work->qedf = qedf;
2676         queue_work(qedf->ll2_recv_wq, &skb_work->work);
2677
2678         return 0;
2679 }
2680
2681 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = {
2682         .rx_cb = qedf_ll2_rx,
2683         .tx_cb = NULL,
2684 };
2685
2686 /* Main thread to process I/O completions */
2687 void qedf_fp_io_handler(struct work_struct *work)
2688 {
2689         struct qedf_io_work *io_work =
2690             container_of(work, struct qedf_io_work, work);
2691         u32 comp_type;
2692
2693         /*
2694          * Deferred part of unsolicited CQE sends
2695          * frame to libfc.
2696          */
2697         comp_type = (io_work->cqe.cqe_data >>
2698             FCOE_CQE_CQE_TYPE_SHIFT) &
2699             FCOE_CQE_CQE_TYPE_MASK;
2700         if (comp_type == FCOE_UNSOLIC_CQE_TYPE &&
2701             io_work->fp)
2702                 fc_exch_recv(io_work->qedf->lport, io_work->fp);
2703         else
2704                 qedf_process_cqe(io_work->qedf, &io_work->cqe);
2705
2706         kfree(io_work);
2707 }
2708
2709 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf,
2710         struct qed_sb_info *sb_info, u16 sb_id)
2711 {
2712         struct status_block *sb_virt;
2713         dma_addr_t sb_phys;
2714         int ret;
2715
2716         sb_virt = dma_alloc_coherent(&qedf->pdev->dev,
2717             sizeof(struct status_block), &sb_phys, GFP_KERNEL);
2718
2719         if (!sb_virt) {
2720                 QEDF_ERR(&qedf->dbg_ctx,
2721                          "Status block allocation failed for id = %d.\n",
2722                          sb_id);
2723                 return -ENOMEM;
2724         }
2725
2726         ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys,
2727             sb_id, QED_SB_TYPE_STORAGE);
2728
2729         if (ret) {
2730                 QEDF_ERR(&qedf->dbg_ctx,
2731                          "Status block initialization failed (0x%x) for id = %d.\n",
2732                          ret, sb_id);
2733                 return ret;
2734         }
2735
2736         return 0;
2737 }
2738
2739 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info)
2740 {
2741         if (sb_info->sb_virt)
2742                 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt),
2743                     (void *)sb_info->sb_virt, sb_info->sb_phys);
2744 }
2745
2746 static void qedf_destroy_sb(struct qedf_ctx *qedf)
2747 {
2748         int id;
2749         struct qedf_fastpath *fp = NULL;
2750
2751         for (id = 0; id < qedf->num_queues; id++) {
2752                 fp = &(qedf->fp_array[id]);
2753                 if (fp->sb_id == QEDF_SB_ID_NULL)
2754                         break;
2755                 qedf_free_sb(qedf, fp->sb_info);
2756                 kfree(fp->sb_info);
2757         }
2758         kfree(qedf->fp_array);
2759 }
2760
2761 static int qedf_prepare_sb(struct qedf_ctx *qedf)
2762 {
2763         int id;
2764         struct qedf_fastpath *fp;
2765         int ret;
2766
2767         qedf->fp_array =
2768             kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath),
2769                 GFP_KERNEL);
2770
2771         if (!qedf->fp_array) {
2772                 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation "
2773                           "failed.\n");
2774                 return -ENOMEM;
2775         }
2776
2777         for (id = 0; id < qedf->num_queues; id++) {
2778                 fp = &(qedf->fp_array[id]);
2779                 fp->sb_id = QEDF_SB_ID_NULL;
2780                 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL);
2781                 if (!fp->sb_info) {
2782                         QEDF_ERR(&(qedf->dbg_ctx), "SB info struct "
2783                                   "allocation failed.\n");
2784                         goto err;
2785                 }
2786                 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id);
2787                 if (ret) {
2788                         QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and "
2789                                   "initialization failed.\n");
2790                         goto err;
2791                 }
2792                 fp->sb_id = id;
2793                 fp->qedf = qedf;
2794                 fp->cq_num_entries =
2795                     qedf->global_queues[id]->cq_mem_size /
2796                     sizeof(struct fcoe_cqe);
2797         }
2798 err:
2799         return 0;
2800 }
2801
2802 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe)
2803 {
2804         u16 xid;
2805         struct qedf_ioreq *io_req;
2806         struct qedf_rport *fcport;
2807         u32 comp_type;
2808         u8 io_comp_type;
2809         unsigned long flags;
2810
2811         comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2812             FCOE_CQE_CQE_TYPE_MASK;
2813
2814         xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2815         io_req = &qedf->cmd_mgr->cmds[xid];
2816
2817         /* Completion not for a valid I/O anymore so just return */
2818         if (!io_req) {
2819                 QEDF_ERR(&qedf->dbg_ctx,
2820                          "io_req is NULL for xid=0x%x.\n", xid);
2821                 return;
2822         }
2823
2824         fcport = io_req->fcport;
2825
2826         if (fcport == NULL) {
2827                 QEDF_ERR(&qedf->dbg_ctx,
2828                          "fcport is NULL for xid=0x%x io_req=%p.\n",
2829                          xid, io_req);
2830                 return;
2831         }
2832
2833         /*
2834          * Check that fcport is offloaded.  If it isn't then the spinlock
2835          * isn't valid and shouldn't be taken. We should just return.
2836          */
2837         if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
2838                 QEDF_ERR(&qedf->dbg_ctx,
2839                          "Session not offloaded yet, fcport = %p.\n", fcport);
2840                 return;
2841         }
2842
2843         spin_lock_irqsave(&fcport->rport_lock, flags);
2844         io_comp_type = io_req->cmd_type;
2845         spin_unlock_irqrestore(&fcport->rport_lock, flags);
2846
2847         switch (comp_type) {
2848         case FCOE_GOOD_COMPLETION_CQE_TYPE:
2849                 atomic_inc(&fcport->free_sqes);
2850                 switch (io_comp_type) {
2851                 case QEDF_SCSI_CMD:
2852                         qedf_scsi_completion(qedf, cqe, io_req);
2853                         break;
2854                 case QEDF_ELS:
2855                         qedf_process_els_compl(qedf, cqe, io_req);
2856                         break;
2857                 case QEDF_TASK_MGMT_CMD:
2858                         qedf_process_tmf_compl(qedf, cqe, io_req);
2859                         break;
2860                 case QEDF_SEQ_CLEANUP:
2861                         qedf_process_seq_cleanup_compl(qedf, cqe, io_req);
2862                         break;
2863                 }
2864                 break;
2865         case FCOE_ERROR_DETECTION_CQE_TYPE:
2866                 atomic_inc(&fcport->free_sqes);
2867                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2868                     "Error detect CQE.\n");
2869                 qedf_process_error_detect(qedf, cqe, io_req);
2870                 break;
2871         case FCOE_EXCH_CLEANUP_CQE_TYPE:
2872                 atomic_inc(&fcport->free_sqes);
2873                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2874                     "Cleanup CQE.\n");
2875                 qedf_process_cleanup_compl(qedf, cqe, io_req);
2876                 break;
2877         case FCOE_ABTS_CQE_TYPE:
2878                 atomic_inc(&fcport->free_sqes);
2879                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2880                     "Abort CQE.\n");
2881                 qedf_process_abts_compl(qedf, cqe, io_req);
2882                 break;
2883         case FCOE_DUMMY_CQE_TYPE:
2884                 atomic_inc(&fcport->free_sqes);
2885                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2886                     "Dummy CQE.\n");
2887                 break;
2888         case FCOE_LOCAL_COMP_CQE_TYPE:
2889                 atomic_inc(&fcport->free_sqes);
2890                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2891                     "Local completion CQE.\n");
2892                 break;
2893         case FCOE_WARNING_CQE_TYPE:
2894                 atomic_inc(&fcport->free_sqes);
2895                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2896                     "Warning CQE.\n");
2897                 qedf_process_warning_compl(qedf, cqe, io_req);
2898                 break;
2899         case MAX_FCOE_CQE_TYPE:
2900                 atomic_inc(&fcport->free_sqes);
2901                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2902                     "Max FCoE CQE.\n");
2903                 break;
2904         default:
2905                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2906                     "Default CQE.\n");
2907                 break;
2908         }
2909 }
2910
2911 static void qedf_free_bdq(struct qedf_ctx *qedf)
2912 {
2913         int i;
2914
2915         if (qedf->bdq_pbl_list)
2916                 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE,
2917                     qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma);
2918
2919         if (qedf->bdq_pbl)
2920                 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size,
2921                     qedf->bdq_pbl, qedf->bdq_pbl_dma);
2922
2923         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2924                 if (qedf->bdq[i].buf_addr) {
2925                         dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE,
2926                             qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma);
2927                 }
2928         }
2929 }
2930
2931 static void qedf_free_global_queues(struct qedf_ctx *qedf)
2932 {
2933         int i;
2934         struct global_queue **gl = qedf->global_queues;
2935
2936         for (i = 0; i < qedf->num_queues; i++) {
2937                 if (!gl[i])
2938                         continue;
2939
2940                 if (gl[i]->cq)
2941                         dma_free_coherent(&qedf->pdev->dev,
2942                             gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma);
2943                 if (gl[i]->cq_pbl)
2944                         dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size,
2945                             gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
2946
2947                 kfree(gl[i]);
2948         }
2949
2950         qedf_free_bdq(qedf);
2951 }
2952
2953 static int qedf_alloc_bdq(struct qedf_ctx *qedf)
2954 {
2955         int i;
2956         struct scsi_bd *pbl;
2957         u64 *list;
2958
2959         /* Alloc dma memory for BDQ buffers */
2960         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2961                 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev,
2962                     QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL);
2963                 if (!qedf->bdq[i].buf_addr) {
2964                         QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ "
2965                             "buffer %d.\n", i);
2966                         return -ENOMEM;
2967                 }
2968         }
2969
2970         /* Alloc dma memory for BDQ page buffer list */
2971         qedf->bdq_pbl_mem_size =
2972             QEDF_BDQ_SIZE * sizeof(struct scsi_bd);
2973         qedf->bdq_pbl_mem_size =
2974             ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE);
2975
2976         qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
2977             qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL);
2978         if (!qedf->bdq_pbl) {
2979                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n");
2980                 return -ENOMEM;
2981         }
2982
2983         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2984                   "BDQ PBL addr=0x%p dma=%pad\n",
2985                   qedf->bdq_pbl, &qedf->bdq_pbl_dma);
2986
2987         /*
2988          * Populate BDQ PBL with physical and virtual address of individual
2989          * BDQ buffers
2990          */
2991         pbl = (struct scsi_bd *)qedf->bdq_pbl;
2992         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2993                 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma));
2994                 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma));
2995                 pbl->opaque.fcoe_opaque.hi = 0;
2996                 /* Opaque lo data is an index into the BDQ array */
2997                 pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i);
2998                 pbl++;
2999         }
3000
3001         /* Allocate list of PBL pages */
3002         qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev,
3003                                                 QEDF_PAGE_SIZE,
3004                                                 &qedf->bdq_pbl_list_dma,
3005                                                 GFP_KERNEL);
3006         if (!qedf->bdq_pbl_list) {
3007                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n");
3008                 return -ENOMEM;
3009         }
3010
3011         /*
3012          * Now populate PBL list with pages that contain pointers to the
3013          * individual buffers.
3014          */
3015         qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size /
3016             QEDF_PAGE_SIZE;
3017         list = (u64 *)qedf->bdq_pbl_list;
3018         for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) {
3019                 *list = qedf->bdq_pbl_dma;
3020                 list++;
3021         }
3022
3023         return 0;
3024 }
3025
3026 static int qedf_alloc_global_queues(struct qedf_ctx *qedf)
3027 {
3028         u32 *list;
3029         int i;
3030         int status;
3031         u32 *pbl;
3032         dma_addr_t page;
3033         int num_pages;
3034
3035         /* Allocate and map CQs, RQs */
3036         /*
3037          * Number of global queues (CQ / RQ). This should
3038          * be <= number of available MSIX vectors for the PF
3039          */
3040         if (!qedf->num_queues) {
3041                 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n");
3042                 return -ENOMEM;
3043         }
3044
3045         /*
3046          * Make sure we allocated the PBL that will contain the physical
3047          * addresses of our queues
3048          */
3049         if (!qedf->p_cpuq) {
3050                 QEDF_ERR(&qedf->dbg_ctx, "p_cpuq is NULL.\n");
3051                 return -EINVAL;
3052         }
3053
3054         qedf->global_queues = kzalloc((sizeof(struct global_queue *)
3055             * qedf->num_queues), GFP_KERNEL);
3056         if (!qedf->global_queues) {
3057                 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global "
3058                           "queues array ptr memory\n");
3059                 return -ENOMEM;
3060         }
3061         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3062                    "qedf->global_queues=%p.\n", qedf->global_queues);
3063
3064         /* Allocate DMA coherent buffers for BDQ */
3065         status = qedf_alloc_bdq(qedf);
3066         if (status) {
3067                 QEDF_ERR(&qedf->dbg_ctx, "Unable to allocate bdq.\n");
3068                 goto mem_alloc_failure;
3069         }
3070
3071         /* Allocate a CQ and an associated PBL for each MSI-X vector */
3072         for (i = 0; i < qedf->num_queues; i++) {
3073                 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue),
3074                     GFP_KERNEL);
3075                 if (!qedf->global_queues[i]) {
3076                         QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate "
3077                                    "global queue %d.\n", i);
3078                         status = -ENOMEM;
3079                         goto mem_alloc_failure;
3080                 }
3081
3082                 qedf->global_queues[i]->cq_mem_size =
3083                     FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
3084                 qedf->global_queues[i]->cq_mem_size =
3085                     ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE);
3086
3087                 qedf->global_queues[i]->cq_pbl_size =
3088                     (qedf->global_queues[i]->cq_mem_size /
3089                     PAGE_SIZE) * sizeof(void *);
3090                 qedf->global_queues[i]->cq_pbl_size =
3091                     ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE);
3092
3093                 qedf->global_queues[i]->cq =
3094                     dma_alloc_coherent(&qedf->pdev->dev,
3095                                        qedf->global_queues[i]->cq_mem_size,
3096                                        &qedf->global_queues[i]->cq_dma,
3097                                        GFP_KERNEL);
3098
3099                 if (!qedf->global_queues[i]->cq) {
3100                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n");
3101                         status = -ENOMEM;
3102                         goto mem_alloc_failure;
3103                 }
3104
3105                 qedf->global_queues[i]->cq_pbl =
3106                     dma_alloc_coherent(&qedf->pdev->dev,
3107                                        qedf->global_queues[i]->cq_pbl_size,
3108                                        &qedf->global_queues[i]->cq_pbl_dma,
3109                                        GFP_KERNEL);
3110
3111                 if (!qedf->global_queues[i]->cq_pbl) {
3112                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n");
3113                         status = -ENOMEM;
3114                         goto mem_alloc_failure;
3115                 }
3116
3117                 /* Create PBL */
3118                 num_pages = qedf->global_queues[i]->cq_mem_size /
3119                     QEDF_PAGE_SIZE;
3120                 page = qedf->global_queues[i]->cq_dma;
3121                 pbl = (u32 *)qedf->global_queues[i]->cq_pbl;
3122
3123                 while (num_pages--) {
3124                         *pbl = U64_LO(page);
3125                         pbl++;
3126                         *pbl = U64_HI(page);
3127                         pbl++;
3128                         page += QEDF_PAGE_SIZE;
3129                 }
3130                 /* Set the initial consumer index for cq */
3131                 qedf->global_queues[i]->cq_cons_idx = 0;
3132         }
3133
3134         list = (u32 *)qedf->p_cpuq;
3135
3136         /*
3137          * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
3138          * CQ#1 PBL pointer, RQ#1 PBL pointer, etc.  Each PBL pointer points
3139          * to the physical address which contains an array of pointers to
3140          * the physical addresses of the specific queue pages.
3141          */
3142         for (i = 0; i < qedf->num_queues; i++) {
3143                 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma);
3144                 list++;
3145                 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma);
3146                 list++;
3147                 *list = U64_LO(0);
3148                 list++;
3149                 *list = U64_HI(0);
3150                 list++;
3151         }
3152
3153         return 0;
3154
3155 mem_alloc_failure:
3156         qedf_free_global_queues(qedf);
3157         return status;
3158 }
3159
3160 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf)
3161 {
3162         u8 sq_num_pbl_pages;
3163         u32 sq_mem_size;
3164         u32 cq_mem_size;
3165         u32 cq_num_entries;
3166         int rval;
3167
3168         /*
3169          * The number of completion queues/fastpath interrupts/status blocks
3170          * we allocation is the minimum off:
3171          *
3172          * Number of CPUs
3173          * Number allocated by qed for our PCI function
3174          */
3175         qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf);
3176
3177         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n",
3178                    qedf->num_queues);
3179
3180         qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev,
3181             qedf->num_queues * sizeof(struct qedf_glbl_q_params),
3182             &qedf->hw_p_cpuq, GFP_KERNEL);
3183
3184         if (!qedf->p_cpuq) {
3185                 QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n");
3186                 return 1;
3187         }
3188
3189         rval = qedf_alloc_global_queues(qedf);
3190         if (rval) {
3191                 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation "
3192                           "failed.\n");
3193                 return 1;
3194         }
3195
3196         /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */
3197         sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
3198         sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE);
3199         sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE);
3200
3201         /* Calculate CQ num entries */
3202         cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
3203         cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE);
3204         cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe);
3205
3206         memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params));
3207
3208         /* Setup the value for fcoe PF */
3209         qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS;
3210         qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS;
3211         qedf->pf_params.fcoe_pf_params.glbl_q_params_addr =
3212             (u64)qedf->hw_p_cpuq;
3213         qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages;
3214
3215         qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0;
3216
3217         qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries;
3218         qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues;
3219
3220         /* log_page_size: 12 for 4KB pages */
3221         qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE);
3222
3223         qedf->pf_params.fcoe_pf_params.mtu = 9000;
3224         qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI;
3225         qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI;
3226
3227         /* BDQ address and size */
3228         qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] =
3229             qedf->bdq_pbl_list_dma;
3230         qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] =
3231             qedf->bdq_pbl_list_num_entries;
3232         qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE;
3233
3234         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3235             "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n",
3236             qedf->bdq_pbl_list,
3237             qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0],
3238             qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]);
3239
3240         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3241             "cq_num_entries=%d.\n",
3242             qedf->pf_params.fcoe_pf_params.cq_num_entries);
3243
3244         return 0;
3245 }
3246
3247 /* Free DMA coherent memory for array of queue pointers we pass to qed */
3248 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf)
3249 {
3250         size_t size = 0;
3251
3252         if (qedf->p_cpuq) {
3253                 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params);
3254                 dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq,
3255                     qedf->hw_p_cpuq);
3256         }
3257
3258         qedf_free_global_queues(qedf);
3259
3260         kfree(qedf->global_queues);
3261 }
3262
3263 /*
3264  * PCI driver functions
3265  */
3266
3267 static const struct pci_device_id qedf_pci_tbl[] = {
3268         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) },
3269         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) },
3270         {0}
3271 };
3272 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl);
3273
3274 static struct pci_driver qedf_pci_driver = {
3275         .name = QEDF_MODULE_NAME,
3276         .id_table = qedf_pci_tbl,
3277         .probe = qedf_probe,
3278         .remove = qedf_remove,
3279         .shutdown = qedf_shutdown,
3280         .suspend = qedf_suspend,
3281 };
3282
3283 static int __qedf_probe(struct pci_dev *pdev, int mode)
3284 {
3285         int rc = -EINVAL;
3286         struct fc_lport *lport;
3287         struct qedf_ctx *qedf = NULL;
3288         struct Scsi_Host *host;
3289         bool is_vf = false;
3290         struct qed_ll2_params params;
3291         char host_buf[20];
3292         struct qed_link_params link_params;
3293         int status;
3294         void *task_start, *task_end;
3295         struct qed_slowpath_params slowpath_params;
3296         struct qed_probe_params qed_params;
3297         u16 retry_cnt = 10;
3298
3299         /*
3300          * When doing error recovery we didn't reap the lport so don't try
3301          * to reallocate it.
3302          */
3303 retry_probe:
3304         if (mode == QEDF_MODE_RECOVERY)
3305                 msleep(2000);
3306
3307         if (mode != QEDF_MODE_RECOVERY) {
3308                 lport = libfc_host_alloc(&qedf_host_template,
3309                     sizeof(struct qedf_ctx));
3310
3311                 if (!lport) {
3312                         QEDF_ERR(NULL, "Could not allocate lport.\n");
3313                         rc = -ENOMEM;
3314                         goto err0;
3315                 }
3316
3317                 fc_disc_init(lport);
3318
3319                 /* Initialize qedf_ctx */
3320                 qedf = lport_priv(lport);
3321                 set_bit(QEDF_PROBING, &qedf->flags);
3322                 qedf->lport = lport;
3323                 qedf->ctlr.lp = lport;
3324                 qedf->pdev = pdev;
3325                 qedf->dbg_ctx.pdev = pdev;
3326                 qedf->dbg_ctx.host_no = lport->host->host_no;
3327                 spin_lock_init(&qedf->hba_lock);
3328                 INIT_LIST_HEAD(&qedf->fcports);
3329                 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1;
3330                 atomic_set(&qedf->num_offloads, 0);
3331                 qedf->stop_io_on_error = false;
3332                 pci_set_drvdata(pdev, qedf);
3333                 init_completion(&qedf->fipvlan_compl);
3334                 mutex_init(&qedf->stats_mutex);
3335                 mutex_init(&qedf->flush_mutex);
3336                 qedf->flogi_pending = 0;
3337
3338                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO,
3339                    "QLogic FastLinQ FCoE Module qedf %s, "
3340                    "FW %d.%d.%d.%d\n", QEDF_VERSION,
3341                    FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
3342                    FW_ENGINEERING_VERSION);
3343         } else {
3344                 /* Init pointers during recovery */
3345                 qedf = pci_get_drvdata(pdev);
3346                 set_bit(QEDF_PROBING, &qedf->flags);
3347                 lport = qedf->lport;
3348         }
3349
3350         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe started.\n");
3351
3352         host = lport->host;
3353
3354         /* Allocate mempool for qedf_io_work structs */
3355         qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN,
3356             qedf_io_work_cache);
3357         if (qedf->io_mempool == NULL) {
3358                 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n");
3359                 goto err1;
3360         }
3361         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n",
3362             qedf->io_mempool);
3363
3364         sprintf(host_buf, "qedf_%u_link",
3365             qedf->lport->host->host_no);
3366         qedf->link_update_wq = create_workqueue(host_buf);
3367         INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update);
3368         INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery);
3369         INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump);
3370         INIT_DELAYED_WORK(&qedf->stag_work, qedf_stag_change_work);
3371         qedf->fipvlan_retries = qedf_fipvlan_retries;
3372         /* Set a default prio in case DCBX doesn't converge */
3373         if (qedf_default_prio > -1) {
3374                 /*
3375                  * This is the case where we pass a modparam in so we want to
3376                  * honor it even if dcbx doesn't converge.
3377                  */
3378                 qedf->prio = qedf_default_prio;
3379         } else
3380                 qedf->prio = QEDF_DEFAULT_PRIO;
3381
3382         /*
3383          * Common probe. Takes care of basic hardware init and pci_*
3384          * functions.
3385          */
3386         memset(&qed_params, 0, sizeof(qed_params));
3387         qed_params.protocol = QED_PROTOCOL_FCOE;
3388         qed_params.dp_module = qedf_dp_module;
3389         qed_params.dp_level = qedf_dp_level;
3390         qed_params.is_vf = is_vf;
3391         qedf->cdev = qed_ops->common->probe(pdev, &qed_params);
3392         if (!qedf->cdev) {
3393                 if ((mode == QEDF_MODE_RECOVERY) && retry_cnt) {
3394                         QEDF_ERR(&qedf->dbg_ctx,
3395                                 "Retry %d initialize hardware\n", retry_cnt);
3396                         retry_cnt--;
3397                         goto retry_probe;
3398                 }
3399                 QEDF_ERR(&qedf->dbg_ctx, "common probe failed.\n");
3400                 rc = -ENODEV;
3401                 goto err1;
3402         }
3403
3404         /* Learn information crucial for qedf to progress */
3405         rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
3406         if (rc) {
3407                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n");
3408                 goto err1;
3409         }
3410
3411         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
3412                   "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
3413                   qedf->dev_info.common.num_hwfns,
3414                   qed_ops->common->get_affin_hwfn_idx(qedf->cdev));
3415
3416         /* queue allocation code should come here
3417          * order should be
3418          *      slowpath_start
3419          *      status block allocation
3420          *      interrupt registration (to get min number of queues)
3421          *      set_fcoe_pf_param
3422          *      qed_sp_fcoe_func_start
3423          */
3424         rc = qedf_set_fcoe_pf_param(qedf);
3425         if (rc) {
3426                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n");
3427                 goto err2;
3428         }
3429         qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3430
3431         /* Learn information crucial for qedf to progress */
3432         rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
3433         if (rc) {
3434                 QEDF_ERR(&qedf->dbg_ctx, "Failed to fill dev info.\n");
3435                 goto err2;
3436         }
3437
3438         if (mode != QEDF_MODE_RECOVERY) {
3439                 qedf->devlink = qed_ops->common->devlink_register(qedf->cdev);
3440                 if (IS_ERR(qedf->devlink)) {
3441                         QEDF_ERR(&qedf->dbg_ctx, "Cannot register devlink\n");
3442                         rc = PTR_ERR(qedf->devlink);
3443                         qedf->devlink = NULL;
3444                         goto err2;
3445                 }
3446         }
3447
3448         /* Record BDQ producer doorbell addresses */
3449         qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr;
3450         qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr;
3451         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3452             "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod,
3453             qedf->bdq_secondary_prod);
3454
3455         qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf);
3456
3457         rc = qedf_prepare_sb(qedf);
3458         if (rc) {
3459
3460                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3461                 goto err2;
3462         }
3463
3464         /* Start the Slowpath-process */
3465         slowpath_params.int_mode = QED_INT_MODE_MSIX;
3466         slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER;
3467         slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER;
3468         slowpath_params.drv_rev = QEDF_DRIVER_REV_VER;
3469         slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER;
3470         strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE);
3471         rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params);
3472         if (rc) {
3473                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3474                 goto err2;
3475         }
3476
3477         /*
3478          * update_pf_params needs to be called before and after slowpath
3479          * start
3480          */
3481         qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3482
3483         /* Setup interrupts */
3484         rc = qedf_setup_int(qedf);
3485         if (rc) {
3486                 QEDF_ERR(&qedf->dbg_ctx, "Setup interrupts failed.\n");
3487                 goto err3;
3488         }
3489
3490         rc = qed_ops->start(qedf->cdev, &qedf->tasks);
3491         if (rc) {
3492                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n");
3493                 goto err4;
3494         }
3495         task_start = qedf_get_task_mem(&qedf->tasks, 0);
3496         task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1);
3497         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, "
3498                    "end=%p block_size=%u.\n", task_start, task_end,
3499                    qedf->tasks.size);
3500
3501         /*
3502          * We need to write the number of BDs in the BDQ we've preallocated so
3503          * the f/w will do a prefetch and we'll get an unsolicited CQE when a
3504          * packet arrives.
3505          */
3506         qedf->bdq_prod_idx = QEDF_BDQ_SIZE;
3507         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3508             "Writing %d to primary and secondary BDQ doorbell registers.\n",
3509             qedf->bdq_prod_idx);
3510         writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod);
3511         readw(qedf->bdq_primary_prod);
3512         writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod);
3513         readw(qedf->bdq_secondary_prod);
3514
3515         qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3516
3517         /* Now that the dev_info struct has been filled in set the MAC
3518          * address
3519          */
3520         ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac);
3521         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n",
3522                    qedf->mac);
3523
3524         /*
3525          * Set the WWNN and WWPN in the following way:
3526          *
3527          * If the info we get from qed is non-zero then use that to set the
3528          * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based
3529          * on the MAC address.
3530          */
3531         if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) {
3532                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3533                     "Setting WWPN and WWNN from qed dev_info.\n");
3534                 qedf->wwnn = qedf->dev_info.wwnn;
3535                 qedf->wwpn = qedf->dev_info.wwpn;
3536         } else {
3537                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3538                     "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n");
3539                 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0);
3540                 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0);
3541         }
3542         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,  "WWNN=%016llx "
3543                    "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn);
3544
3545         sprintf(host_buf, "host_%d", host->host_no);
3546         qed_ops->common->set_name(qedf->cdev, host_buf);
3547
3548         /* Allocate cmd mgr */
3549         qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf);
3550         if (!qedf->cmd_mgr) {
3551                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n");
3552                 rc = -ENOMEM;
3553                 goto err5;
3554         }
3555
3556         if (mode != QEDF_MODE_RECOVERY) {
3557                 host->transportt = qedf_fc_transport_template;
3558                 host->max_lun = qedf_max_lun;
3559                 host->max_cmd_len = QEDF_MAX_CDB_LEN;
3560                 host->max_id = QEDF_MAX_SESSIONS;
3561                 host->can_queue = FCOE_PARAMS_NUM_TASKS;
3562                 rc = scsi_add_host(host, &pdev->dev);
3563                 if (rc) {
3564                         QEDF_WARN(&qedf->dbg_ctx,
3565                                   "Error adding Scsi_Host rc=0x%x.\n", rc);
3566                         goto err6;
3567                 }
3568         }
3569
3570         memset(&params, 0, sizeof(params));
3571         params.mtu = QEDF_LL2_BUF_SIZE;
3572         ether_addr_copy(params.ll2_mac_address, qedf->mac);
3573
3574         /* Start LL2 processing thread */
3575         snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no);
3576         qedf->ll2_recv_wq =
3577                 create_workqueue(host_buf);
3578         if (!qedf->ll2_recv_wq) {
3579                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n");
3580                 rc = -ENOMEM;
3581                 goto err7;
3582         }
3583
3584 #ifdef CONFIG_DEBUG_FS
3585         qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops,
3586                             qedf_dbg_fops);
3587 #endif
3588
3589         /* Start LL2 */
3590         qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf);
3591         rc = qed_ops->ll2->start(qedf->cdev, &params);
3592         if (rc) {
3593                 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n");
3594                 goto err7;
3595         }
3596         set_bit(QEDF_LL2_STARTED, &qedf->flags);
3597
3598         /* Set initial FIP/FCoE VLAN to NULL */
3599         qedf->vlan_id = 0;
3600
3601         /*
3602          * No need to setup fcoe_ctlr or fc_lport objects during recovery since
3603          * they were not reaped during the unload process.
3604          */
3605         if (mode != QEDF_MODE_RECOVERY) {
3606                 /* Setup imbedded fcoe controller */
3607                 qedf_fcoe_ctlr_setup(qedf);
3608
3609                 /* Setup lport */
3610                 rc = qedf_lport_setup(qedf);
3611                 if (rc) {
3612                         QEDF_ERR(&(qedf->dbg_ctx),
3613                             "qedf_lport_setup failed.\n");
3614                         goto err7;
3615                 }
3616         }
3617
3618         sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no);
3619         qedf->timer_work_queue =
3620                 create_workqueue(host_buf);
3621         if (!qedf->timer_work_queue) {
3622                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer "
3623                           "workqueue.\n");
3624                 rc = -ENOMEM;
3625                 goto err7;
3626         }
3627
3628         /* DPC workqueue is not reaped during recovery unload */
3629         if (mode != QEDF_MODE_RECOVERY) {
3630                 sprintf(host_buf, "qedf_%u_dpc",
3631                     qedf->lport->host->host_no);
3632                 qedf->dpc_wq = create_workqueue(host_buf);
3633         }
3634         INIT_DELAYED_WORK(&qedf->recovery_work, qedf_recovery_handler);
3635
3636         /*
3637          * GRC dump and sysfs parameters are not reaped during the recovery
3638          * unload process.
3639          */
3640         if (mode != QEDF_MODE_RECOVERY) {
3641                 qedf->grcdump_size =
3642                     qed_ops->common->dbg_all_data_size(qedf->cdev);
3643                 if (qedf->grcdump_size) {
3644                         rc = qedf_alloc_grc_dump_buf(&qedf->grcdump,
3645                             qedf->grcdump_size);
3646                         if (rc) {
3647                                 QEDF_ERR(&(qedf->dbg_ctx),
3648                                     "GRC Dump buffer alloc failed.\n");
3649                                 qedf->grcdump = NULL;
3650                         }
3651
3652                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3653                             "grcdump: addr=%p, size=%u.\n",
3654                             qedf->grcdump, qedf->grcdump_size);
3655                 }
3656                 qedf_create_sysfs_ctx_attr(qedf);
3657
3658                 /* Initialize I/O tracing for this adapter */
3659                 spin_lock_init(&qedf->io_trace_lock);
3660                 qedf->io_trace_idx = 0;
3661         }
3662
3663         init_completion(&qedf->flogi_compl);
3664
3665         status = qed_ops->common->update_drv_state(qedf->cdev, true);
3666         if (status)
3667                 QEDF_ERR(&(qedf->dbg_ctx),
3668                         "Failed to send drv state to MFW.\n");
3669
3670         memset(&link_params, 0, sizeof(struct qed_link_params));
3671         link_params.link_up = true;
3672         status = qed_ops->common->set_link(qedf->cdev, &link_params);
3673         if (status)
3674                 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n");
3675
3676         /* Start/restart discovery */
3677         if (mode == QEDF_MODE_RECOVERY)
3678                 fcoe_ctlr_link_up(&qedf->ctlr);
3679         else
3680                 fc_fabric_login(lport);
3681
3682         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe done.\n");
3683
3684         clear_bit(QEDF_PROBING, &qedf->flags);
3685
3686         /* All good */
3687         return 0;
3688
3689 err7:
3690         if (qedf->ll2_recv_wq)
3691                 destroy_workqueue(qedf->ll2_recv_wq);
3692         fc_remove_host(qedf->lport->host);
3693         scsi_remove_host(qedf->lport->host);
3694 #ifdef CONFIG_DEBUG_FS
3695         qedf_dbg_host_exit(&(qedf->dbg_ctx));
3696 #endif
3697 err6:
3698         qedf_cmd_mgr_free(qedf->cmd_mgr);
3699 err5:
3700         qed_ops->stop(qedf->cdev);
3701 err4:
3702         qedf_free_fcoe_pf_param(qedf);
3703         qedf_sync_free_irqs(qedf);
3704 err3:
3705         qed_ops->common->slowpath_stop(qedf->cdev);
3706 err2:
3707         qed_ops->common->remove(qedf->cdev);
3708 err1:
3709         scsi_host_put(lport->host);
3710 err0:
3711         return rc;
3712 }
3713
3714 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
3715 {
3716         return __qedf_probe(pdev, QEDF_MODE_NORMAL);
3717 }
3718
3719 static void __qedf_remove(struct pci_dev *pdev, int mode)
3720 {
3721         struct qedf_ctx *qedf;
3722         int rc;
3723
3724         if (!pdev) {
3725                 QEDF_ERR(NULL, "pdev is NULL.\n");
3726                 return;
3727         }
3728
3729         qedf = pci_get_drvdata(pdev);
3730
3731         /*
3732          * Prevent race where we're in board disable work and then try to
3733          * rmmod the module.
3734          */
3735         if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
3736                 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n");
3737                 return;
3738         }
3739
3740         if (mode != QEDF_MODE_RECOVERY)
3741                 set_bit(QEDF_UNLOADING, &qedf->flags);
3742
3743         /* Logoff the fabric to upload all connections */
3744         if (mode == QEDF_MODE_RECOVERY)
3745                 fcoe_ctlr_link_down(&qedf->ctlr);
3746         else
3747                 fc_fabric_logoff(qedf->lport);
3748
3749         if (!qedf_wait_for_upload(qedf))
3750                 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n");
3751
3752 #ifdef CONFIG_DEBUG_FS
3753         qedf_dbg_host_exit(&(qedf->dbg_ctx));
3754 #endif
3755
3756         /* Stop any link update handling */
3757         cancel_delayed_work_sync(&qedf->link_update);
3758         destroy_workqueue(qedf->link_update_wq);
3759         qedf->link_update_wq = NULL;
3760
3761         if (qedf->timer_work_queue)
3762                 destroy_workqueue(qedf->timer_work_queue);
3763
3764         /* Stop Light L2 */
3765         clear_bit(QEDF_LL2_STARTED, &qedf->flags);
3766         qed_ops->ll2->stop(qedf->cdev);
3767         if (qedf->ll2_recv_wq)
3768                 destroy_workqueue(qedf->ll2_recv_wq);
3769
3770         /* Stop fastpath */
3771         qedf_sync_free_irqs(qedf);
3772         qedf_destroy_sb(qedf);
3773
3774         /*
3775          * During recovery don't destroy OS constructs that represent the
3776          * physical port.
3777          */
3778         if (mode != QEDF_MODE_RECOVERY) {
3779                 qedf_free_grc_dump_buf(&qedf->grcdump);
3780                 qedf_remove_sysfs_ctx_attr(qedf);
3781
3782                 /* Remove all SCSI/libfc/libfcoe structures */
3783                 fcoe_ctlr_destroy(&qedf->ctlr);
3784                 fc_lport_destroy(qedf->lport);
3785                 fc_remove_host(qedf->lport->host);
3786                 scsi_remove_host(qedf->lport->host);
3787         }
3788
3789         qedf_cmd_mgr_free(qedf->cmd_mgr);
3790
3791         if (mode != QEDF_MODE_RECOVERY) {
3792                 fc_exch_mgr_free(qedf->lport);
3793                 fc_lport_free_stats(qedf->lport);
3794
3795                 /* Wait for all vports to be reaped */
3796                 qedf_wait_for_vport_destroy(qedf);
3797         }
3798
3799         /*
3800          * Now that all connections have been uploaded we can stop the
3801          * rest of the qed operations
3802          */
3803         qed_ops->stop(qedf->cdev);
3804
3805         if (mode != QEDF_MODE_RECOVERY) {
3806                 if (qedf->dpc_wq) {
3807                         /* Stop general DPC handling */
3808                         destroy_workqueue(qedf->dpc_wq);
3809                         qedf->dpc_wq = NULL;
3810                 }
3811         }
3812
3813         /* Final shutdown for the board */
3814         qedf_free_fcoe_pf_param(qedf);
3815         if (mode != QEDF_MODE_RECOVERY) {
3816                 qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3817                 pci_set_drvdata(pdev, NULL);
3818         }
3819
3820         rc = qed_ops->common->update_drv_state(qedf->cdev, false);
3821         if (rc)
3822                 QEDF_ERR(&(qedf->dbg_ctx),
3823                         "Failed to send drv state to MFW.\n");
3824
3825         if (mode != QEDF_MODE_RECOVERY && qedf->devlink) {
3826                 qed_ops->common->devlink_unregister(qedf->devlink);
3827                 qedf->devlink = NULL;
3828         }
3829
3830         qed_ops->common->slowpath_stop(qedf->cdev);
3831         qed_ops->common->remove(qedf->cdev);
3832
3833         mempool_destroy(qedf->io_mempool);
3834
3835         /* Only reap the Scsi_host on a real removal */
3836         if (mode != QEDF_MODE_RECOVERY)
3837                 scsi_host_put(qedf->lport->host);
3838 }
3839
3840 static void qedf_remove(struct pci_dev *pdev)
3841 {
3842         /* Check to make sure this function wasn't already disabled */
3843         if (!atomic_read(&pdev->enable_cnt))
3844                 return;
3845
3846         __qedf_remove(pdev, QEDF_MODE_NORMAL);
3847 }
3848
3849 void qedf_wq_grcdump(struct work_struct *work)
3850 {
3851         struct qedf_ctx *qedf =
3852             container_of(work, struct qedf_ctx, grcdump_work.work);
3853
3854         QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n");
3855         qedf_capture_grc_dump(qedf);
3856 }
3857
3858 void qedf_schedule_hw_err_handler(void *dev, enum qed_hw_err_type err_type)
3859 {
3860         struct qedf_ctx *qedf = dev;
3861
3862         QEDF_ERR(&(qedf->dbg_ctx),
3863                         "Hardware error handler scheduled, event=%d.\n",
3864                         err_type);
3865
3866         if (test_bit(QEDF_IN_RECOVERY, &qedf->flags)) {
3867                 QEDF_ERR(&(qedf->dbg_ctx),
3868                                 "Already in recovery, not scheduling board disable work.\n");
3869                 return;
3870         }
3871
3872         switch (err_type) {
3873         case QED_HW_ERR_FAN_FAIL:
3874                 schedule_delayed_work(&qedf->board_disable_work, 0);
3875                 break;
3876         case QED_HW_ERR_MFW_RESP_FAIL:
3877         case QED_HW_ERR_HW_ATTN:
3878         case QED_HW_ERR_DMAE_FAIL:
3879         case QED_HW_ERR_FW_ASSERT:
3880                 /* Prevent HW attentions from being reasserted */
3881                 qed_ops->common->attn_clr_enable(qedf->cdev, true);
3882                 break;
3883         case QED_HW_ERR_RAMROD_FAIL:
3884                 /* Prevent HW attentions from being reasserted */
3885                 qed_ops->common->attn_clr_enable(qedf->cdev, true);
3886
3887                 if (qedf_enable_recovery && qedf->devlink)
3888                         qed_ops->common->report_fatal_error(qedf->devlink,
3889                                 err_type);
3890
3891                 break;
3892         default:
3893                 break;
3894         }
3895 }
3896
3897 /*
3898  * Protocol TLV handler
3899  */
3900 void qedf_get_protocol_tlv_data(void *dev, void *data)
3901 {
3902         struct qedf_ctx *qedf = dev;
3903         struct qed_mfw_tlv_fcoe *fcoe = data;
3904         struct fc_lport *lport;
3905         struct Scsi_Host *host;
3906         struct fc_host_attrs *fc_host;
3907         struct fc_host_statistics *hst;
3908
3909         if (!qedf) {
3910                 QEDF_ERR(NULL, "qedf is null.\n");
3911                 return;
3912         }
3913
3914         if (test_bit(QEDF_PROBING, &qedf->flags)) {
3915                 QEDF_ERR(&qedf->dbg_ctx, "Function is still probing.\n");
3916                 return;
3917         }
3918
3919         lport = qedf->lport;
3920         host = lport->host;
3921         fc_host = shost_to_fc_host(host);
3922
3923         /* Force a refresh of the fc_host stats including offload stats */
3924         hst = qedf_fc_get_host_stats(host);
3925
3926         fcoe->qos_pri_set = true;
3927         fcoe->qos_pri = 3; /* Hard coded to 3 in driver */
3928
3929         fcoe->ra_tov_set = true;
3930         fcoe->ra_tov = lport->r_a_tov;
3931
3932         fcoe->ed_tov_set = true;
3933         fcoe->ed_tov = lport->e_d_tov;
3934
3935         fcoe->npiv_state_set = true;
3936         fcoe->npiv_state = 1; /* NPIV always enabled */
3937
3938         fcoe->num_npiv_ids_set = true;
3939         fcoe->num_npiv_ids = fc_host->npiv_vports_inuse;
3940
3941         /* Certain attributes we only want to set if we've selected an FCF */
3942         if (qedf->ctlr.sel_fcf) {
3943                 fcoe->switch_name_set = true;
3944                 u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name);
3945         }
3946
3947         fcoe->port_state_set = true;
3948         /* For qedf we're either link down or fabric attach */
3949         if (lport->link_up)
3950                 fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC;
3951         else
3952                 fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE;
3953
3954         fcoe->link_failures_set = true;
3955         fcoe->link_failures = (u16)hst->link_failure_count;
3956
3957         fcoe->fcoe_txq_depth_set = true;
3958         fcoe->fcoe_rxq_depth_set = true;
3959         fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS;
3960         fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS;
3961
3962         fcoe->fcoe_rx_frames_set = true;
3963         fcoe->fcoe_rx_frames = hst->rx_frames;
3964
3965         fcoe->fcoe_tx_frames_set = true;
3966         fcoe->fcoe_tx_frames = hst->tx_frames;
3967
3968         fcoe->fcoe_rx_bytes_set = true;
3969         fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000;
3970
3971         fcoe->fcoe_tx_bytes_set = true;
3972         fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000;
3973
3974         fcoe->crc_count_set = true;
3975         fcoe->crc_count = hst->invalid_crc_count;
3976
3977         fcoe->tx_abts_set = true;
3978         fcoe->tx_abts = hst->fcp_packet_aborts;
3979
3980         fcoe->tx_lun_rst_set = true;
3981         fcoe->tx_lun_rst = qedf->lun_resets;
3982
3983         fcoe->abort_task_sets_set = true;
3984         fcoe->abort_task_sets = qedf->packet_aborts;
3985
3986         fcoe->scsi_busy_set = true;
3987         fcoe->scsi_busy = qedf->busy;
3988
3989         fcoe->scsi_tsk_full_set = true;
3990         fcoe->scsi_tsk_full = qedf->task_set_fulls;
3991 }
3992
3993 /* Deferred work function to perform soft context reset on STAG change */
3994 void qedf_stag_change_work(struct work_struct *work)
3995 {
3996         struct qedf_ctx *qedf =
3997             container_of(work, struct qedf_ctx, stag_work.work);
3998
3999         printk_ratelimited("[%s]:[%s:%d]:%d: Performing software context reset.",
4000                         dev_name(&qedf->pdev->dev), __func__, __LINE__,
4001                         qedf->dbg_ctx.host_no);
4002         qedf_ctx_soft_reset(qedf->lport);
4003 }
4004
4005 static void qedf_shutdown(struct pci_dev *pdev)
4006 {
4007         __qedf_remove(pdev, QEDF_MODE_NORMAL);
4008 }
4009
4010 static int qedf_suspend(struct pci_dev *pdev, pm_message_t state)
4011 {
4012         struct qedf_ctx *qedf;
4013
4014         if (!pdev) {
4015                 QEDF_ERR(NULL, "pdev is NULL.\n");
4016                 return -ENODEV;
4017         }
4018
4019         qedf = pci_get_drvdata(pdev);
4020
4021         QEDF_ERR(&qedf->dbg_ctx, "%s: Device does not support suspend operation\n", __func__);
4022
4023         return -EPERM;
4024 }
4025
4026 /*
4027  * Recovery handler code
4028  */
4029 static void qedf_schedule_recovery_handler(void *dev)
4030 {
4031         struct qedf_ctx *qedf = dev;
4032
4033         QEDF_ERR(&qedf->dbg_ctx, "Recovery handler scheduled.\n");
4034         schedule_delayed_work(&qedf->recovery_work, 0);
4035 }
4036
4037 static void qedf_recovery_handler(struct work_struct *work)
4038 {
4039         struct qedf_ctx *qedf =
4040             container_of(work, struct qedf_ctx, recovery_work.work);
4041
4042         if (test_and_set_bit(QEDF_IN_RECOVERY, &qedf->flags))
4043                 return;
4044
4045         /*
4046          * Call common_ops->recovery_prolog to allow the MFW to quiesce
4047          * any PCI transactions.
4048          */
4049         qed_ops->common->recovery_prolog(qedf->cdev);
4050
4051         QEDF_ERR(&qedf->dbg_ctx, "Recovery work start.\n");
4052         __qedf_remove(qedf->pdev, QEDF_MODE_RECOVERY);
4053         /*
4054          * Reset link and dcbx to down state since we will not get a link down
4055          * event from the MFW but calling __qedf_remove will essentially be a
4056          * link down event.
4057          */
4058         atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
4059         atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
4060         __qedf_probe(qedf->pdev, QEDF_MODE_RECOVERY);
4061         clear_bit(QEDF_IN_RECOVERY, &qedf->flags);
4062         QEDF_ERR(&qedf->dbg_ctx, "Recovery work complete.\n");
4063 }
4064
4065 /* Generic TLV data callback */
4066 void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
4067 {
4068         struct qedf_ctx *qedf;
4069
4070         if (!dev) {
4071                 QEDF_INFO(NULL, QEDF_LOG_EVT,
4072                           "dev is NULL so ignoring get_generic_tlv_data request.\n");
4073                 return;
4074         }
4075         qedf = (struct qedf_ctx *)dev;
4076
4077         memset(data, 0, sizeof(struct qed_generic_tlvs));
4078         ether_addr_copy(data->mac[0], qedf->mac);
4079 }
4080
4081 /*
4082  * Module Init/Remove
4083  */
4084
4085 static int __init qedf_init(void)
4086 {
4087         int ret;
4088
4089         /* If debug=1 passed, set the default log mask */
4090         if (qedf_debug == QEDF_LOG_DEFAULT)
4091                 qedf_debug = QEDF_DEFAULT_LOG_MASK;
4092
4093         /*
4094          * Check that default prio for FIP/FCoE traffic is between 0..7 if a
4095          * value has been set
4096          */
4097         if (qedf_default_prio > -1)
4098                 if (qedf_default_prio > 7) {
4099                         qedf_default_prio = QEDF_DEFAULT_PRIO;
4100                         QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n",
4101                             QEDF_DEFAULT_PRIO);
4102                 }
4103
4104         /* Print driver banner */
4105         QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR,
4106                    QEDF_VERSION);
4107
4108         /* Create kmem_cache for qedf_io_work structs */
4109         qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache",
4110             sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL);
4111         if (qedf_io_work_cache == NULL) {
4112                 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n");
4113                 goto err1;
4114         }
4115         QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n",
4116             qedf_io_work_cache);
4117
4118         qed_ops = qed_get_fcoe_ops();
4119         if (!qed_ops) {
4120                 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n");
4121                 goto err1;
4122         }
4123
4124 #ifdef CONFIG_DEBUG_FS
4125         qedf_dbg_init("qedf");
4126 #endif
4127
4128         qedf_fc_transport_template =
4129             fc_attach_transport(&qedf_fc_transport_fn);
4130         if (!qedf_fc_transport_template) {
4131                 QEDF_ERR(NULL, "Could not register with FC transport\n");
4132                 goto err2;
4133         }
4134
4135         qedf_fc_vport_transport_template =
4136                 fc_attach_transport(&qedf_fc_vport_transport_fn);
4137         if (!qedf_fc_vport_transport_template) {
4138                 QEDF_ERR(NULL, "Could not register vport template with FC "
4139                           "transport\n");
4140                 goto err3;
4141         }
4142
4143         qedf_io_wq = create_workqueue("qedf_io_wq");
4144         if (!qedf_io_wq) {
4145                 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n");
4146                 goto err4;
4147         }
4148
4149         qedf_cb_ops.get_login_failures = qedf_get_login_failures;
4150
4151         ret = pci_register_driver(&qedf_pci_driver);
4152         if (ret) {
4153                 QEDF_ERR(NULL, "Failed to register driver\n");
4154                 goto err5;
4155         }
4156
4157         return 0;
4158
4159 err5:
4160         destroy_workqueue(qedf_io_wq);
4161 err4:
4162         fc_release_transport(qedf_fc_vport_transport_template);
4163 err3:
4164         fc_release_transport(qedf_fc_transport_template);
4165 err2:
4166 #ifdef CONFIG_DEBUG_FS
4167         qedf_dbg_exit();
4168 #endif
4169         qed_put_fcoe_ops();
4170 err1:
4171         return -EINVAL;
4172 }
4173
4174 static void __exit qedf_cleanup(void)
4175 {
4176         pci_unregister_driver(&qedf_pci_driver);
4177
4178         destroy_workqueue(qedf_io_wq);
4179
4180         fc_release_transport(qedf_fc_vport_transport_template);
4181         fc_release_transport(qedf_fc_transport_template);
4182 #ifdef CONFIG_DEBUG_FS
4183         qedf_dbg_exit();
4184 #endif
4185         qed_put_fcoe_ops();
4186
4187         kmem_cache_destroy(qedf_io_work_cache);
4188 }
4189
4190 MODULE_LICENSE("GPL");
4191 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx FCoE Module");
4192 MODULE_AUTHOR("QLogic Corporation");
4193 MODULE_VERSION(QEDF_VERSION);
4194 module_init(qedf_init);
4195 module_exit(qedf_cleanup);