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                 qedf->flogi_pending++;
 322
 323                 if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
 324                         QEDF_ERR(&qedf->dbg_ctx, "Driver unloading\n");
 325                         qedf->flogi_pending = 0;
 326                 }
 327
 328                 if (qedf->flogi_pending >= QEDF_FLOGI_RETRY_CNT) {
 329                         schedule_delayed_work(&qedf->stag_work, 2);
 330                         return NULL;
 331                 }
 332
 333                 return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp,
 334                     arg, timeout);
 335         }
 336
 337         return fc_elsct_send(lport, did, fp, op, resp, arg, timeout);
 338 }
 339
 340 int qedf_send_flogi(struct qedf_ctx *qedf)
 341 {
 342         struct fc_lport *lport;
 343         struct fc_frame *fp;
 344
 345         lport = qedf->lport;
 346
 347         if (!lport->tt.elsct_send) {
 348                 QEDF_ERR(&qedf->dbg_ctx, "tt.elsct_send not set.\n");
 349                 return -EINVAL;
 350         }
 351
 352         fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi));
 353         if (!fp) {
 354                 QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n");
 355                 return -ENOMEM;
 356         }
 357
 358         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
 359             "Sending FLOGI to reestablish session with switch.\n");
 360         lport->tt.elsct_send(lport, FC_FID_FLOGI, fp,
 361             ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov);
 362
 363         init_completion(&qedf->flogi_compl);
 364
 365         return 0;
 366 }
 367
 368 /*
 369  * This function is called if link_down_tmo is in use.  If we get a link up and
 370  * link_down_tmo has not expired then use just FLOGI/ADISC to recover our
 371  * sessions with targets.  Otherwise, just call fcoe_ctlr_link_up().
 372  */
 373 static void qedf_link_recovery(struct work_struct *work)
 374 {
 375         struct qedf_ctx *qedf =
 376             container_of(work, struct qedf_ctx, link_recovery.work);
 377         struct fc_lport *lport = qedf->lport;
 378         struct fc_rport_priv *rdata;
 379         bool rc;
 380         int retries = 30;
 381         int rval, i;
 382         struct list_head rdata_login_list;
 383
 384         INIT_LIST_HEAD(&rdata_login_list);
 385
 386         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 387             "Link down tmo did not expire.\n");
 388
 389         /*
 390          * Essentially reset the fcoe_ctlr here without affecting the state
 391          * of the libfc structs.
 392          */
 393         qedf->ctlr.state = FIP_ST_LINK_WAIT;
 394         fcoe_ctlr_link_down(&qedf->ctlr);
 395
 396         /*
 397          * Bring the link up before we send the fipvlan request so libfcoe
 398          * can select a new fcf in parallel
 399          */
 400         fcoe_ctlr_link_up(&qedf->ctlr);
 401
 402         /* Since the link when down and up to verify which vlan we're on */
 403         qedf->fipvlan_retries = qedf_fipvlan_retries;
 404         rc = qedf_initiate_fipvlan_req(qedf);
 405         /* If getting the VLAN fails, set the VLAN to the fallback one */
 406         if (!rc)
 407                 qedf_set_vlan_id(qedf, qedf_fallback_vlan);
 408
 409         /*
 410          * We need to wait for an FCF to be selected due to the
 411          * fcoe_ctlr_link_up other the FLOGI will be rejected.
 412          */
 413         while (retries > 0) {
 414                 if (qedf->ctlr.sel_fcf) {
 415                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 416                             "FCF reselected, proceeding with FLOGI.\n");
 417                         break;
 418                 }
 419                 msleep(500);
 420                 retries--;
 421         }
 422
 423         if (retries < 1) {
 424                 QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for "
 425                     "FCF selection.\n");
 426                 return;
 427         }
 428
 429         rval = qedf_send_flogi(qedf);
 430         if (rval)
 431                 return;
 432
 433         /* Wait for FLOGI completion before proceeding with sending ADISCs */
 434         i = wait_for_completion_timeout(&qedf->flogi_compl,
 435             qedf->lport->r_a_tov);
 436         if (i == 0) {
 437                 QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n");
 438                 return;
 439         }
 440
 441         /*
 442          * Call lport->tt.rport_login which will cause libfc to send an
 443          * ADISC since the rport is in state ready.
 444          */
 445         mutex_lock(&lport->disc.disc_mutex);
 446         list_for_each_entry_rcu(rdata, &lport->disc.rports, peers) {
 447                 if (kref_get_unless_zero(&rdata->kref)) {
 448                         fc_rport_login(rdata);
 449                         kref_put(&rdata->kref, fc_rport_destroy);
 450                 }
 451         }
 452         mutex_unlock(&lport->disc.disc_mutex);
 453 }
 454
 455 static void qedf_update_link_speed(struct qedf_ctx *qedf,
 456         struct qed_link_output *link)
 457 {
 458         __ETHTOOL_DECLARE_LINK_MODE_MASK(sup_caps);
 459         struct fc_lport *lport = qedf->lport;
 460
 461         lport->link_speed = FC_PORTSPEED_UNKNOWN;
 462         lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN;
 463
 464         /* Set fc_host link speed */
 465         switch (link->speed) {
 466         case 10000:
 467                 lport->link_speed = FC_PORTSPEED_10GBIT;
 468                 break;
 469         case 25000:
 470                 lport->link_speed = FC_PORTSPEED_25GBIT;
 471                 break;
 472         case 40000:
 473                 lport->link_speed = FC_PORTSPEED_40GBIT;
 474                 break;
 475         case 50000:
 476                 lport->link_speed = FC_PORTSPEED_50GBIT;
 477                 break;
 478         case 100000:
 479                 lport->link_speed = FC_PORTSPEED_100GBIT;
 480                 break;
 481         case 20000:
 482                 lport->link_speed = FC_PORTSPEED_20GBIT;
 483                 break;
 484         default:
 485                 lport->link_speed = FC_PORTSPEED_UNKNOWN;
 486                 break;
 487         }
 488
 489         /*
 490          * Set supported link speed by querying the supported
 491          * capabilities of the link.
 492          */
 493
 494         phylink_zero(sup_caps);
 495         phylink_set(sup_caps, 10000baseT_Full);
 496         phylink_set(sup_caps, 10000baseKX4_Full);
 497         phylink_set(sup_caps, 10000baseR_FEC);
 498         phylink_set(sup_caps, 10000baseCR_Full);
 499         phylink_set(sup_caps, 10000baseSR_Full);
 500         phylink_set(sup_caps, 10000baseLR_Full);
 501         phylink_set(sup_caps, 10000baseLRM_Full);
 502         phylink_set(sup_caps, 10000baseKR_Full);
 503
 504         if (linkmode_intersects(link->supported_caps, sup_caps))
 505                 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT;
 506
 507         phylink_zero(sup_caps);
 508         phylink_set(sup_caps, 25000baseKR_Full);
 509         phylink_set(sup_caps, 25000baseCR_Full);
 510         phylink_set(sup_caps, 25000baseSR_Full);
 511
 512         if (linkmode_intersects(link->supported_caps, sup_caps))
 513                 lport->link_supported_speeds |= FC_PORTSPEED_25GBIT;
 514
 515         phylink_zero(sup_caps);
 516         phylink_set(sup_caps, 40000baseLR4_Full);
 517         phylink_set(sup_caps, 40000baseKR4_Full);
 518         phylink_set(sup_caps, 40000baseCR4_Full);
 519         phylink_set(sup_caps, 40000baseSR4_Full);
 520
 521         if (linkmode_intersects(link->supported_caps, sup_caps))
 522                 lport->link_supported_speeds |= FC_PORTSPEED_40GBIT;
 523
 524         phylink_zero(sup_caps);
 525         phylink_set(sup_caps, 50000baseKR2_Full);
 526         phylink_set(sup_caps, 50000baseCR2_Full);
 527         phylink_set(sup_caps, 50000baseSR2_Full);
 528
 529         if (linkmode_intersects(link->supported_caps, sup_caps))
 530                 lport->link_supported_speeds |= FC_PORTSPEED_50GBIT;
 531
 532         phylink_zero(sup_caps);
 533         phylink_set(sup_caps, 100000baseKR4_Full);
 534         phylink_set(sup_caps, 100000baseSR4_Full);
 535         phylink_set(sup_caps, 100000baseCR4_Full);
 536         phylink_set(sup_caps, 100000baseLR4_ER4_Full);
 537
 538         if (linkmode_intersects(link->supported_caps, sup_caps))
 539                 lport->link_supported_speeds |= FC_PORTSPEED_100GBIT;
 540
 541         phylink_zero(sup_caps);
 542         phylink_set(sup_caps, 20000baseKR2_Full);
 543
 544         if (linkmode_intersects(link->supported_caps, sup_caps))
 545                 lport->link_supported_speeds |= FC_PORTSPEED_20GBIT;
 546
 547         if (lport->host && lport->host->shost_data)
 548                 fc_host_supported_speeds(lport->host) =
 549                         lport->link_supported_speeds;
 550 }
 551
 552 static void qedf_bw_update(void *dev)
 553 {
 554         struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
 555         struct qed_link_output link;
 556
 557         /* Get the latest status of the link */
 558         qed_ops->common->get_link(qedf->cdev, &link);
 559
 560         if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
 561                 QEDF_ERR(&qedf->dbg_ctx,
 562                          "Ignore link update, driver getting unload.\n");
 563                 return;
 564         }
 565
 566         if (link.link_up) {
 567                 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP)
 568                         qedf_update_link_speed(qedf, &link);
 569                 else
 570                         QEDF_ERR(&qedf->dbg_ctx,
 571                                  "Ignore bw update, link is down.\n");
 572
 573         } else {
 574                 QEDF_ERR(&qedf->dbg_ctx, "link_up is not set.\n");
 575         }
 576 }
 577
 578 static void qedf_link_update(void *dev, struct qed_link_output *link)
 579 {
 580         struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
 581
 582         /*
 583          * Prevent race where we're removing the module and we get link update
 584          * for qed.
 585          */
 586         if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
 587                 QEDF_ERR(&qedf->dbg_ctx,
 588                          "Ignore link update, driver getting unload.\n");
 589                 return;
 590         }
 591
 592         if (link->link_up) {
 593                 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
 594                         QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC,
 595                             "Ignoring link up event as link is already up.\n");
 596                         return;
 597                 }
 598                 QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n",
 599                     link->speed / 1000);
 600
 601                 /* Cancel any pending link down work */
 602                 cancel_delayed_work(&qedf->link_update);
 603
 604                 atomic_set(&qedf->link_state, QEDF_LINK_UP);
 605                 qedf_update_link_speed(qedf, link);
 606
 607                 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE ||
 608                     qedf_dcbx_no_wait) {
 609                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 610                              "DCBx done.\n");
 611                         if (atomic_read(&qedf->link_down_tmo_valid) > 0)
 612                                 queue_delayed_work(qedf->link_update_wq,
 613                                     &qedf->link_recovery, 0);
 614                         else
 615                                 queue_delayed_work(qedf->link_update_wq,
 616                                     &qedf->link_update, 0);
 617                         atomic_set(&qedf->link_down_tmo_valid, 0);
 618                 }
 619
 620         } else {
 621                 QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n");
 622
 623                 atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
 624                 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
 625                 /*
 626                  * Flag that we're waiting for the link to come back up before
 627                  * informing the fcoe layer of the event.
 628                  */
 629                 if (qedf_link_down_tmo > 0) {
 630                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 631                             "Starting link down tmo.\n");
 632                         atomic_set(&qedf->link_down_tmo_valid, 1);
 633                 }
 634                 qedf->vlan_id = 0;
 635                 qedf_update_link_speed(qedf, link);
 636                 queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 637                     qedf_link_down_tmo * HZ);
 638         }
 639 }
 640
 641
 642 static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type)
 643 {
 644         struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
 645         u8 tmp_prio;
 646
 647         QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe "
 648             "prio=%d.\n", get->operational.valid, get->operational.enabled,
 649             get->operational.app_prio.fcoe);
 650
 651         if (get->operational.enabled && get->operational.valid) {
 652                 /* If DCBX was already negotiated on link up then just exit */
 653                 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) {
 654                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 655                             "DCBX already set on link up.\n");
 656                         return;
 657                 }
 658
 659                 atomic_set(&qedf->dcbx, QEDF_DCBX_DONE);
 660
 661                 /*
 662                  * Set the 8021q priority in the following manner:
 663                  *
 664                  * 1. If a modparam is set use that
 665                  * 2. If the value is not between 0..7 use the default
 666                  * 3. Use the priority we get from the DCBX app tag
 667                  */
 668                 tmp_prio = get->operational.app_prio.fcoe;
 669                 if (qedf_default_prio > -1)
 670                         qedf->prio = qedf_default_prio;
 671                 else if (tmp_prio > 7) {
 672                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 673                             "FIP/FCoE prio %d out of range, setting to %d.\n",
 674                             tmp_prio, QEDF_DEFAULT_PRIO);
 675                         qedf->prio = QEDF_DEFAULT_PRIO;
 676                 } else
 677                         qedf->prio = tmp_prio;
 678
 679                 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP &&
 680                     !qedf_dcbx_no_wait) {
 681                         if (atomic_read(&qedf->link_down_tmo_valid) > 0)
 682                                 queue_delayed_work(qedf->link_update_wq,
 683                                     &qedf->link_recovery, 0);
 684                         else
 685                                 queue_delayed_work(qedf->link_update_wq,
 686                                     &qedf->link_update, 0);
 687                         atomic_set(&qedf->link_down_tmo_valid, 0);
 688                 }
 689         }
 690
 691 }
 692
 693 static u32 qedf_get_login_failures(void *cookie)
 694 {
 695         struct qedf_ctx *qedf;
 696
 697         qedf = (struct qedf_ctx *)cookie;
 698         return qedf->flogi_failed;
 699 }
 700
 701 static struct qed_fcoe_cb_ops qedf_cb_ops = {
 702         {
 703                 .link_update = qedf_link_update,
 704                 .bw_update = qedf_bw_update,
 705                 .schedule_recovery_handler = qedf_schedule_recovery_handler,
 706                 .dcbx_aen = qedf_dcbx_handler,
 707                 .get_generic_tlv_data = qedf_get_generic_tlv_data,
 708                 .get_protocol_tlv_data = qedf_get_protocol_tlv_data,
 709                 .schedule_hw_err_handler = qedf_schedule_hw_err_handler,
 710         }
 711 };
 712
 713 /*
 714  * Various transport templates.
 715  */
 716
 717 static struct scsi_transport_template *qedf_fc_transport_template;
 718 static struct scsi_transport_template *qedf_fc_vport_transport_template;
 719
 720 /*
 721  * SCSI EH handlers
 722  */
 723 static int qedf_eh_abort(struct scsi_cmnd *sc_cmd)
 724 {
 725         struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
 726         struct fc_lport *lport;
 727         struct qedf_ctx *qedf;
 728         struct qedf_ioreq *io_req;
 729         struct fc_rport_libfc_priv *rp = rport->dd_data;
 730         struct fc_rport_priv *rdata;
 731         struct qedf_rport *fcport = NULL;
 732         int rc = FAILED;
 733         int wait_count = 100;
 734         int refcount = 0;
 735         int rval;
 736         int got_ref = 0;
 737
 738         lport = shost_priv(sc_cmd->device->host);
 739         qedf = (struct qedf_ctx *)lport_priv(lport);
 740
 741         /* rport and tgt are allocated together, so tgt should be non-NULL */
 742         fcport = (struct qedf_rport *)&rp[1];
 743         rdata = fcport->rdata;
 744         if (!rdata || !kref_get_unless_zero(&rdata->kref)) {
 745                 QEDF_ERR(&qedf->dbg_ctx, "stale rport, sc_cmd=%p\n", sc_cmd);
 746                 rc = SUCCESS;
 747                 goto out;
 748         }
 749
 750
 751         io_req = qedf_priv(sc_cmd)->io_req;
 752         if (!io_req) {
 753                 QEDF_ERR(&qedf->dbg_ctx,
 754                          "sc_cmd not queued with lld, sc_cmd=%p op=0x%02x, port_id=%06x\n",
 755                          sc_cmd, sc_cmd->cmnd[0],
 756                          rdata->ids.port_id);
 757                 rc = SUCCESS;
 758                 goto drop_rdata_kref;
 759         }
 760
 761         rval = kref_get_unless_zero(&io_req->refcount); /* ID: 005 */
 762         if (rval)
 763                 got_ref = 1;
 764
 765         /* If we got a valid io_req, confirm it belongs to this sc_cmd. */
 766         if (!rval || io_req->sc_cmd != sc_cmd) {
 767                 QEDF_ERR(&qedf->dbg_ctx,
 768                          "Freed/Incorrect io_req, io_req->sc_cmd=%p, sc_cmd=%p, port_id=%06x, bailing out.\n",
 769                          io_req->sc_cmd, sc_cmd, rdata->ids.port_id);
 770
 771                 goto drop_rdata_kref;
 772         }
 773
 774         if (fc_remote_port_chkready(rport)) {
 775                 refcount = kref_read(&io_req->refcount);
 776                 QEDF_ERR(&qedf->dbg_ctx,
 777                          "rport not ready, io_req=%p, xid=0x%x sc_cmd=%p op=0x%02x, refcount=%d, port_id=%06x\n",
 778                          io_req, io_req->xid, sc_cmd, sc_cmd->cmnd[0],
 779                          refcount, rdata->ids.port_id);
 780
 781                 goto drop_rdata_kref;
 782         }
 783
 784         rc = fc_block_rport(rport);
 785         if (rc)
 786                 goto drop_rdata_kref;
 787
 788         if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) {
 789                 QEDF_ERR(&qedf->dbg_ctx,
 790                          "Connection uploading, xid=0x%x., port_id=%06x\n",
 791                          io_req->xid, rdata->ids.port_id);
 792                 while (io_req->sc_cmd && (wait_count != 0)) {
 793                         msleep(100);
 794                         wait_count--;
 795                 }
 796                 if (wait_count) {
 797                         QEDF_ERR(&qedf->dbg_ctx, "ABTS succeeded\n");
 798                         rc = SUCCESS;
 799                 } else {
 800                         QEDF_ERR(&qedf->dbg_ctx, "ABTS failed\n");
 801                         rc = FAILED;
 802                 }
 803                 goto drop_rdata_kref;
 804         }
 805
 806         if (lport->state != LPORT_ST_READY || !(lport->link_up)) {
 807                 QEDF_ERR(&qedf->dbg_ctx, "link not ready.\n");
 808                 goto drop_rdata_kref;
 809         }
 810
 811         QEDF_ERR(&qedf->dbg_ctx,
 812                  "Aborting io_req=%p sc_cmd=%p xid=0x%x fp_idx=%d, port_id=%06x.\n",
 813                  io_req, sc_cmd, io_req->xid, io_req->fp_idx,
 814                  rdata->ids.port_id);
 815
 816         if (qedf->stop_io_on_error) {
 817                 qedf_stop_all_io(qedf);
 818                 rc = SUCCESS;
 819                 goto drop_rdata_kref;
 820         }
 821
 822         init_completion(&io_req->abts_done);
 823         rval = qedf_initiate_abts(io_req, true);
 824         if (rval) {
 825                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n");
 826                 /*
 827                  * If we fail to queue the ABTS then return this command to
 828                  * the SCSI layer as it will own and free the xid
 829                  */
 830                 rc = SUCCESS;
 831                 qedf_scsi_done(qedf, io_req, DID_ERROR);
 832                 goto drop_rdata_kref;
 833         }
 834
 835         wait_for_completion(&io_req->abts_done);
 836
 837         if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS ||
 838             io_req->event == QEDF_IOREQ_EV_ABORT_FAILED ||
 839             io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) {
 840                 /*
 841                  * If we get a reponse to the abort this is success from
 842                  * the perspective that all references to the command have
 843                  * been removed from the driver and firmware
 844                  */
 845                 rc = SUCCESS;
 846         } else {
 847                 /* If the abort and cleanup failed then return a failure */
 848                 rc = FAILED;
 849         }
 850
 851         if (rc == SUCCESS)
 852                 QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n",
 853                           io_req->xid);
 854         else
 855                 QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n",
 856                           io_req->xid);
 857
 858 drop_rdata_kref:
 859         kref_put(&rdata->kref, fc_rport_destroy);
 860 out:
 861         if (got_ref)
 862                 kref_put(&io_req->refcount, qedf_release_cmd);
 863         return rc;
 864 }
 865
 866 static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd)
 867 {
 868         struct scsi_target *starget = scsi_target(sc_cmd->device);
 869         struct fc_rport *rport = starget_to_rport(starget);
 870
 871         QEDF_ERR(NULL, "TARGET RESET Issued...");
 872         return qedf_initiate_tmf(rport, 0, FCP_TMF_TGT_RESET);
 873 }
 874
 875 static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd)
 876 {
 877         struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
 878
 879         QEDF_ERR(NULL, "LUN RESET Issued...\n");
 880         return qedf_initiate_tmf(rport, sc_cmd->device->lun, FCP_TMF_LUN_RESET);
 881 }
 882
 883 bool qedf_wait_for_upload(struct qedf_ctx *qedf)
 884 {
 885         struct qedf_rport *fcport;
 886         int wait_cnt = 120;
 887
 888         while (wait_cnt--) {
 889                 if (atomic_read(&qedf->num_offloads))
 890                         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 891                                   "Waiting for all uploads to complete num_offloads = 0x%x.\n",
 892                                   atomic_read(&qedf->num_offloads));
 893                 else
 894                         return true;
 895                 msleep(500);
 896         }
 897
 898         rcu_read_lock();
 899         list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
 900                 if (test_bit(QEDF_RPORT_SESSION_READY,
 901                                        &fcport->flags)) {
 902                         if (fcport->rdata)
 903                                 QEDF_ERR(&qedf->dbg_ctx,
 904                                          "Waiting for fcport %p portid=%06x.\n",
 905                                          fcport, fcport->rdata->ids.port_id);
 906                         } else {
 907                                 QEDF_ERR(&qedf->dbg_ctx,
 908                                          "Waiting for fcport %p.\n", fcport);
 909                         }
 910         }
 911
 912         rcu_read_unlock();
 913         return false;
 914 }
 915
 916 /* Performs soft reset of qedf_ctx by simulating a link down/up */
 917 void qedf_ctx_soft_reset(struct fc_lport *lport)
 918 {
 919         struct qedf_ctx *qedf;
 920         struct qed_link_output if_link;
 921
 922         qedf = lport_priv(lport);
 923
 924         if (lport->vport) {
 925                 clear_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags);
 926                 printk_ratelimited("Cannot issue host reset on NPIV port.\n");
 927                 return;
 928         }
 929
 930         qedf->flogi_pending = 0;
 931         /* For host reset, essentially do a soft link up/down */
 932         atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
 933         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 934                   "Queuing link down work.\n");
 935         queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 936             0);
 937
 938         if (qedf_wait_for_upload(qedf) == false) {
 939                 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n");
 940                 WARN_ON(atomic_read(&qedf->num_offloads));
 941         }
 942
 943         /* Before setting link up query physical link state */
 944         qed_ops->common->get_link(qedf->cdev, &if_link);
 945         /* Bail if the physical link is not up */
 946         if (!if_link.link_up) {
 947                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 948                           "Physical link is not up.\n");
 949                 clear_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags);
 950                 return;
 951         }
 952         /* Flush and wait to make sure link down is processed */
 953         flush_delayed_work(&qedf->link_update);
 954         msleep(500);
 955
 956         atomic_set(&qedf->link_state, QEDF_LINK_UP);
 957         qedf->vlan_id  = 0;
 958         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 959                   "Queue link up work.\n");
 960         queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 961             0);
 962         clear_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags);
 963 }
 964
 965 /* Reset the host by gracefully logging out and then logging back in */
 966 static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd)
 967 {
 968         struct fc_lport *lport;
 969         struct qedf_ctx *qedf;
 970
 971         lport = shost_priv(sc_cmd->device->host);
 972         qedf = lport_priv(lport);
 973
 974         if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN ||
 975             test_bit(QEDF_UNLOADING, &qedf->flags))
 976                 return FAILED;
 977
 978         QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued...");
 979
 980         qedf_ctx_soft_reset(lport);
 981
 982         return SUCCESS;
 983 }
 984
 985 static int qedf_slave_configure(struct scsi_device *sdev)
 986 {
 987         if (qedf_queue_depth) {
 988                 scsi_change_queue_depth(sdev, qedf_queue_depth);
 989         }
 990
 991         return 0;
 992 }
 993
 994 static const struct scsi_host_template qedf_host_template = {
 995         .module         = THIS_MODULE,
 996         .name           = QEDF_MODULE_NAME,
 997         .this_id        = -1,
 998         .cmd_per_lun    = 32,
 999         .max_sectors    = 0xffff,
1000         .queuecommand   = qedf_queuecommand,
1001         .shost_groups   = qedf_host_groups,
1002         .eh_abort_handler       = qedf_eh_abort,
1003         .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */
1004         .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */
1005         .eh_host_reset_handler  = qedf_eh_host_reset,
1006         .slave_configure        = qedf_slave_configure,
1007         .dma_boundary = QED_HW_DMA_BOUNDARY,
1008         .sg_tablesize = QEDF_MAX_BDS_PER_CMD,
1009         .can_queue = FCOE_PARAMS_NUM_TASKS,
1010         .change_queue_depth = scsi_change_queue_depth,
1011         .cmd_size = sizeof(struct qedf_cmd_priv),
1012 };
1013
1014 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen)
1015 {
1016         int rc;
1017
1018         spin_lock(&qedf_global_lock);
1019         rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global);
1020         spin_unlock(&qedf_global_lock);
1021
1022         return rc;
1023 }
1024
1025 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id)
1026 {
1027         struct qedf_rport *fcport;
1028         struct fc_rport_priv *rdata;
1029
1030         rcu_read_lock();
1031         list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
1032                 rdata = fcport->rdata;
1033                 if (rdata == NULL)
1034                         continue;
1035                 if (rdata->ids.port_id == port_id) {
1036                         rcu_read_unlock();
1037                         return fcport;
1038                 }
1039         }
1040         rcu_read_unlock();
1041
1042         /* Return NULL to caller to let them know fcport was not found */
1043         return NULL;
1044 }
1045
1046 /* Transmits an ELS frame over an offloaded session */
1047 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp)
1048 {
1049         struct fc_frame_header *fh;
1050         int rc = 0;
1051
1052         fh = fc_frame_header_get(fp);
1053         if ((fh->fh_type == FC_TYPE_ELS) &&
1054             (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
1055                 switch (fc_frame_payload_op(fp)) {
1056                 case ELS_ADISC:
1057                         qedf_send_adisc(fcport, fp);
1058                         rc = 1;
1059                         break;
1060                 }
1061         }
1062
1063         return rc;
1064 }
1065
1066 /*
1067  * qedf_xmit - qedf FCoE frame transmit function
1068  */
1069 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp)
1070 {
1071         struct fc_lport         *base_lport;
1072         struct qedf_ctx         *qedf;
1073         struct ethhdr           *eh;
1074         struct fcoe_crc_eof     *cp;
1075         struct sk_buff          *skb;
1076         struct fc_frame_header  *fh;
1077         struct fcoe_hdr         *hp;
1078         u8                      sof, eof;
1079         u32                     crc;
1080         unsigned int            hlen, tlen, elen;
1081         int                     wlen;
1082         struct fc_lport *tmp_lport;
1083         struct fc_lport *vn_port = NULL;
1084         struct qedf_rport *fcport;
1085         int rc;
1086         u16 vlan_tci = 0;
1087
1088         qedf = (struct qedf_ctx *)lport_priv(lport);
1089
1090         fh = fc_frame_header_get(fp);
1091         skb = fp_skb(fp);
1092
1093         /* Filter out traffic to other NPIV ports on the same host */
1094         if (lport->vport)
1095                 base_lport = shost_priv(vport_to_shost(lport->vport));
1096         else
1097                 base_lport = lport;
1098
1099         /* Flag if the destination is the base port */
1100         if (base_lport->port_id == ntoh24(fh->fh_d_id)) {
1101                 vn_port = base_lport;
1102         } else {
1103                 /* Got through the list of vports attached to the base_lport
1104                  * and see if we have a match with the destination address.
1105                  */
1106                 list_for_each_entry(tmp_lport, &base_lport->vports, list) {
1107                         if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) {
1108                                 vn_port = tmp_lport;
1109                                 break;
1110                         }
1111                 }
1112         }
1113         if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) {
1114                 struct fc_rport_priv *rdata = NULL;
1115
1116                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
1117                     "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id));
1118                 kfree_skb(skb);
1119                 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id));
1120                 if (rdata) {
1121                         rdata->retries = lport->max_rport_retry_count;
1122                         kref_put(&rdata->kref, fc_rport_destroy);
1123                 }
1124                 return -EINVAL;
1125         }
1126         /* End NPIV filtering */
1127
1128         if (!qedf->ctlr.sel_fcf) {
1129                 kfree_skb(skb);
1130                 return 0;
1131         }
1132
1133         if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) {
1134                 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n");
1135                 kfree_skb(skb);
1136                 return 0;
1137         }
1138
1139         if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
1140                 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n");
1141                 kfree_skb(skb);
1142                 return 0;
1143         }
1144
1145         if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
1146                 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb))
1147                         return 0;
1148         }
1149
1150         /* Check to see if this needs to be sent on an offloaded session */
1151         fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
1152
1153         if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1154                 rc = qedf_xmit_l2_frame(fcport, fp);
1155                 /*
1156                  * If the frame was successfully sent over the middle path
1157                  * then do not try to also send it over the LL2 path
1158                  */
1159                 if (rc)
1160                         return 0;
1161         }
1162
1163         sof = fr_sof(fp);
1164         eof = fr_eof(fp);
1165
1166         elen = sizeof(struct ethhdr);
1167         hlen = sizeof(struct fcoe_hdr);
1168         tlen = sizeof(struct fcoe_crc_eof);
1169         wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
1170
1171         skb->ip_summed = CHECKSUM_NONE;
1172         crc = fcoe_fc_crc(fp);
1173
1174         /* copy port crc and eof to the skb buff */
1175         if (skb_is_nonlinear(skb)) {
1176                 skb_frag_t *frag;
1177
1178                 if (qedf_get_paged_crc_eof(skb, tlen)) {
1179                         kfree_skb(skb);
1180                         return -ENOMEM;
1181                 }
1182                 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
1183                 cp = kmap_atomic(skb_frag_page(frag)) + skb_frag_off(frag);
1184         } else {
1185                 cp = skb_put(skb, tlen);
1186         }
1187
1188         memset(cp, 0, sizeof(*cp));
1189         cp->fcoe_eof = eof;
1190         cp->fcoe_crc32 = cpu_to_le32(~crc);
1191         if (skb_is_nonlinear(skb)) {
1192                 kunmap_atomic(cp);
1193                 cp = NULL;
1194         }
1195
1196
1197         /* adjust skb network/transport offsets to match mac/fcoe/port */
1198         skb_push(skb, elen + hlen);
1199         skb_reset_mac_header(skb);
1200         skb_reset_network_header(skb);
1201         skb->mac_len = elen;
1202         skb->protocol = htons(ETH_P_FCOE);
1203
1204         /*
1205          * Add VLAN tag to non-offload FCoE frame based on current stored VLAN
1206          * for FIP/FCoE traffic.
1207          */
1208         __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id);
1209
1210         /* fill up mac and fcoe headers */
1211         eh = eth_hdr(skb);
1212         eh->h_proto = htons(ETH_P_FCOE);
1213         if (qedf->ctlr.map_dest)
1214                 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
1215         else
1216                 /* insert GW address */
1217                 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr);
1218
1219         /* Set the source MAC address */
1220         ether_addr_copy(eh->h_source, qedf->data_src_addr);
1221
1222         hp = (struct fcoe_hdr *)(eh + 1);
1223         memset(hp, 0, sizeof(*hp));
1224         if (FC_FCOE_VER)
1225                 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
1226         hp->fcoe_sof = sof;
1227
1228         /*update tx stats */
1229         this_cpu_inc(lport->stats->TxFrames);
1230         this_cpu_add(lport->stats->TxWords, wlen);
1231
1232         /* Get VLAN ID from skb for printing purposes */
1233         __vlan_hwaccel_get_tag(skb, &vlan_tci);
1234
1235         /* send down to lld */
1236         fr_dev(fp) = lport;
1237         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: "
1238             "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n",
1239             ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type,
1240             vlan_tci);
1241         if (qedf_dump_frames)
1242                 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
1243                     1, skb->data, skb->len, false);
1244         rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, 0);
1245         if (rc) {
1246                 QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n", rc);
1247                 kfree_skb(skb);
1248                 return rc;
1249         }
1250
1251         return 0;
1252 }
1253
1254 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1255 {
1256         int rval = 0;
1257         u32 *pbl;
1258         dma_addr_t page;
1259         int num_pages;
1260
1261         /* Calculate appropriate queue and PBL sizes */
1262         fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
1263         fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE);
1264         fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) *
1265             sizeof(void *);
1266         fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE;
1267
1268         fcport->sq = dma_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1269                                         &fcport->sq_dma, GFP_KERNEL);
1270         if (!fcport->sq) {
1271                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n");
1272                 rval = 1;
1273                 goto out;
1274         }
1275
1276         fcport->sq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
1277                                             fcport->sq_pbl_size,
1278                                             &fcport->sq_pbl_dma, GFP_KERNEL);
1279         if (!fcport->sq_pbl) {
1280                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n");
1281                 rval = 1;
1282                 goto out_free_sq;
1283         }
1284
1285         /* Create PBL */
1286         num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE;
1287         page = fcport->sq_dma;
1288         pbl = (u32 *)fcport->sq_pbl;
1289
1290         while (num_pages--) {
1291                 *pbl = U64_LO(page);
1292                 pbl++;
1293                 *pbl = U64_HI(page);
1294                 pbl++;
1295                 page += QEDF_PAGE_SIZE;
1296         }
1297
1298         return rval;
1299
1300 out_free_sq:
1301         dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq,
1302             fcport->sq_dma);
1303 out:
1304         return rval;
1305 }
1306
1307 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1308 {
1309         if (fcport->sq_pbl)
1310                 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size,
1311                     fcport->sq_pbl, fcport->sq_pbl_dma);
1312         if (fcport->sq)
1313                 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1314                     fcport->sq, fcport->sq_dma);
1315 }
1316
1317 static int qedf_offload_connection(struct qedf_ctx *qedf,
1318         struct qedf_rport *fcport)
1319 {
1320         struct qed_fcoe_params_offload conn_info;
1321         u32 port_id;
1322         int rval;
1323         uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe));
1324
1325         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection "
1326                    "portid=%06x.\n", fcport->rdata->ids.port_id);
1327         rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle,
1328             &fcport->fw_cid, &fcport->p_doorbell);
1329         if (rval) {
1330                 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection "
1331                            "for portid=%06x.\n", fcport->rdata->ids.port_id);
1332                 rval = 1; /* For some reason qed returns 0 on failure here */
1333                 goto out;
1334         }
1335
1336         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x "
1337                    "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id,
1338                    fcport->fw_cid, fcport->handle);
1339
1340         memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload));
1341
1342         /* Fill in the offload connection info */
1343         conn_info.sq_pbl_addr = fcport->sq_pbl_dma;
1344
1345         conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl);
1346         conn_info.sq_next_page_addr =
1347             (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8));
1348
1349         /* Need to use our FCoE MAC for the offload session */
1350         ether_addr_copy(conn_info.src_mac, qedf->data_src_addr);
1351
1352         ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr);
1353
1354         conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size;
1355         conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov;
1356         conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */
1357         conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size;
1358
1359         /* Set VLAN data */
1360         conn_info.vlan_tag = qedf->vlan_id <<
1361             FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT;
1362         conn_info.vlan_tag |=
1363             qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT;
1364         conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK <<
1365             FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT);
1366
1367         /* Set host port source id */
1368         port_id = fc_host_port_id(qedf->lport->host);
1369         fcport->sid = port_id;
1370         conn_info.s_id.addr_hi = (port_id & 0x000000FF);
1371         conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1372         conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1373
1374         conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq;
1375
1376         /* Set remote port destination id */
1377         port_id = fcport->rdata->rport->port_id;
1378         conn_info.d_id.addr_hi = (port_id & 0x000000FF);
1379         conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1380         conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1381
1382         conn_info.def_q_idx = 0; /* Default index for send queue? */
1383
1384         /* Set FC-TAPE specific flags if needed */
1385         if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) {
1386                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN,
1387                     "Enable CONF, REC for portid=%06x.\n",
1388                     fcport->rdata->ids.port_id);
1389                 conn_info.flags |= 1 <<
1390                     FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT;
1391                 conn_info.flags |=
1392                     ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
1393                     FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT;
1394         }
1395
1396         rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info);
1397         if (rval) {
1398                 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection "
1399                            "for portid=%06x.\n", fcport->rdata->ids.port_id);
1400                 goto out_free_conn;
1401         } else
1402                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload "
1403                            "succeeded portid=%06x total_sqe=%d.\n",
1404                            fcport->rdata->ids.port_id, total_sqe);
1405
1406         spin_lock_init(&fcport->rport_lock);
1407         atomic_set(&fcport->free_sqes, total_sqe);
1408         return 0;
1409 out_free_conn:
1410         qed_ops->release_conn(qedf->cdev, fcport->handle);
1411 out:
1412         return rval;
1413 }
1414
1415 #define QEDF_TERM_BUFF_SIZE             10
1416 static void qedf_upload_connection(struct qedf_ctx *qedf,
1417         struct qedf_rport *fcport)
1418 {
1419         void *term_params;
1420         dma_addr_t term_params_dma;
1421
1422         /* Term params needs to be a DMA coherent buffer as qed shared the
1423          * physical DMA address with the firmware. The buffer may be used in
1424          * the receive path so we may eventually have to move this.
1425          */
1426         term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE,
1427                 &term_params_dma, GFP_KERNEL);
1428         if (!term_params)
1429                 return;
1430
1431         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection "
1432                    "port_id=%06x.\n", fcport->rdata->ids.port_id);
1433
1434         qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma);
1435         qed_ops->release_conn(qedf->cdev, fcport->handle);
1436
1437         dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params,
1438             term_params_dma);
1439 }
1440
1441 static void qedf_cleanup_fcport(struct qedf_ctx *qedf,
1442         struct qedf_rport *fcport)
1443 {
1444         struct fc_rport_priv *rdata = fcport->rdata;
1445
1446         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n",
1447             fcport->rdata->ids.port_id);
1448
1449         /* Flush any remaining i/o's before we upload the connection */
1450         qedf_flush_active_ios(fcport, -1);
1451
1452         if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags))
1453                 qedf_upload_connection(qedf, fcport);
1454         qedf_free_sq(qedf, fcport);
1455         fcport->rdata = NULL;
1456         fcport->qedf = NULL;
1457         kref_put(&rdata->kref, fc_rport_destroy);
1458 }
1459
1460 /*
1461  * This event_callback is called after successful completion of libfc
1462  * initiated target login. qedf can proceed with initiating the session
1463  * establishment.
1464  */
1465 static void qedf_rport_event_handler(struct fc_lport *lport,
1466                                 struct fc_rport_priv *rdata,
1467                                 enum fc_rport_event event)
1468 {
1469         struct qedf_ctx *qedf = lport_priv(lport);
1470         struct fc_rport *rport = rdata->rport;
1471         struct fc_rport_libfc_priv *rp;
1472         struct qedf_rport *fcport;
1473         u32 port_id;
1474         int rval;
1475         unsigned long flags;
1476
1477         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, "
1478                    "port_id = 0x%x\n", event, rdata->ids.port_id);
1479
1480         switch (event) {
1481         case RPORT_EV_READY:
1482                 if (!rport) {
1483                         QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n");
1484                         break;
1485                 }
1486
1487                 rp = rport->dd_data;
1488                 fcport = (struct qedf_rport *)&rp[1];
1489                 fcport->qedf = qedf;
1490
1491                 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) {
1492                         QEDF_ERR(&(qedf->dbg_ctx), "Not offloading "
1493                             "portid=0x%x as max number of offloaded sessions "
1494                             "reached.\n", rdata->ids.port_id);
1495                         return;
1496                 }
1497
1498                 /*
1499                  * Don't try to offload the session again. Can happen when we
1500                  * get an ADISC
1501                  */
1502                 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1503                         QEDF_WARN(&(qedf->dbg_ctx), "Session already "
1504                                    "offloaded, portid=0x%x.\n",
1505                                    rdata->ids.port_id);
1506                         return;
1507                 }
1508
1509                 if (rport->port_id == FC_FID_DIR_SERV) {
1510                         /*
1511                          * qedf_rport structure doesn't exist for
1512                          * directory server.
1513                          * We should not come here, as lport will
1514                          * take care of fabric login
1515                          */
1516                         QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not "
1517                             "exist for dir server port_id=%x\n",
1518                             rdata->ids.port_id);
1519                         break;
1520                 }
1521
1522                 if (rdata->spp_type != FC_TYPE_FCP) {
1523                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1524                             "Not offloading since spp type isn't FCP\n");
1525                         break;
1526                 }
1527                 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
1528                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1529                             "Not FCP target so not offloading\n");
1530                         break;
1531                 }
1532
1533                 /* Initial reference held on entry, so this can't fail */
1534                 kref_get(&rdata->kref);
1535                 fcport->rdata = rdata;
1536                 fcport->rport = rport;
1537
1538                 rval = qedf_alloc_sq(qedf, fcport);
1539                 if (rval) {
1540                         qedf_cleanup_fcport(qedf, fcport);
1541                         break;
1542                 }
1543
1544                 /* Set device type */
1545                 if (rdata->flags & FC_RP_FLAGS_RETRY &&
1546                     rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET &&
1547                     !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) {
1548                         fcport->dev_type = QEDF_RPORT_TYPE_TAPE;
1549                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1550                             "portid=%06x is a TAPE device.\n",
1551                             rdata->ids.port_id);
1552                 } else {
1553                         fcport->dev_type = QEDF_RPORT_TYPE_DISK;
1554                 }
1555
1556                 rval = qedf_offload_connection(qedf, fcport);
1557                 if (rval) {
1558                         qedf_cleanup_fcport(qedf, fcport);
1559                         break;
1560                 }
1561
1562                 /* Add fcport to list of qedf_ctx list of offloaded ports */
1563                 spin_lock_irqsave(&qedf->hba_lock, flags);
1564                 list_add_rcu(&fcport->peers, &qedf->fcports);
1565                 spin_unlock_irqrestore(&qedf->hba_lock, flags);
1566
1567                 /*
1568                  * Set the session ready bit to let everyone know that this
1569                  * connection is ready for I/O
1570                  */
1571                 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags);
1572                 atomic_inc(&qedf->num_offloads);
1573
1574                 break;
1575         case RPORT_EV_LOGO:
1576         case RPORT_EV_FAILED:
1577         case RPORT_EV_STOP:
1578                 port_id = rdata->ids.port_id;
1579                 if (port_id == FC_FID_DIR_SERV)
1580                         break;
1581
1582                 if (rdata->spp_type != FC_TYPE_FCP) {
1583                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1584                             "No action since spp type isn't FCP\n");
1585                         break;
1586                 }
1587                 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
1588                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1589                             "Not FCP target so no action\n");
1590                         break;
1591                 }
1592
1593                 if (!rport) {
1594                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1595                             "port_id=%x - rport notcreated Yet!!\n", port_id);
1596                         break;
1597                 }
1598                 rp = rport->dd_data;
1599                 /*
1600                  * Perform session upload. Note that rdata->peers is already
1601                  * removed from disc->rports list before we get this event.
1602                  */
1603                 fcport = (struct qedf_rport *)&rp[1];
1604
1605                 spin_lock_irqsave(&fcport->rport_lock, flags);
1606                 /* Only free this fcport if it is offloaded already */
1607                 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) &&
1608                     !test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1609                     &fcport->flags)) {
1610                         set_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1611                                 &fcport->flags);
1612                         spin_unlock_irqrestore(&fcport->rport_lock, flags);
1613                         qedf_cleanup_fcport(qedf, fcport);
1614                         /*
1615                          * Remove fcport to list of qedf_ctx list of offloaded
1616                          * ports
1617                          */
1618                         spin_lock_irqsave(&qedf->hba_lock, flags);
1619                         list_del_rcu(&fcport->peers);
1620                         spin_unlock_irqrestore(&qedf->hba_lock, flags);
1621
1622                         clear_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1623                             &fcport->flags);
1624                         atomic_dec(&qedf->num_offloads);
1625                 } else {
1626                         spin_unlock_irqrestore(&fcport->rport_lock, flags);
1627                 }
1628                 break;
1629
1630         case RPORT_EV_NONE:
1631                 break;
1632         }
1633 }
1634
1635 static void qedf_abort_io(struct fc_lport *lport)
1636 {
1637         /* NO-OP but need to fill in the template */
1638 }
1639
1640 static void qedf_fcp_cleanup(struct fc_lport *lport)
1641 {
1642         /*
1643          * NO-OP but need to fill in template to prevent a NULL
1644          * function pointer dereference during link down. I/Os
1645          * will be flushed when port is uploaded.
1646          */
1647 }
1648
1649 static struct libfc_function_template qedf_lport_template = {
1650         .frame_send             = qedf_xmit,
1651         .fcp_abort_io           = qedf_abort_io,
1652         .fcp_cleanup            = qedf_fcp_cleanup,
1653         .rport_event_callback   = qedf_rport_event_handler,
1654         .elsct_send             = qedf_elsct_send,
1655 };
1656
1657 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf)
1658 {
1659         fcoe_ctlr_init(&qedf->ctlr, FIP_MODE_AUTO);
1660
1661         qedf->ctlr.send = qedf_fip_send;
1662         qedf->ctlr.get_src_addr = qedf_get_src_mac;
1663         ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac);
1664 }
1665
1666 static void qedf_setup_fdmi(struct qedf_ctx *qedf)
1667 {
1668         struct fc_lport *lport = qedf->lport;
1669         u8 buf[8];
1670         int pos;
1671         uint32_t i;
1672
1673         /*
1674          * fdmi_enabled needs to be set for libfc
1675          * to execute FDMI registration
1676          */
1677         lport->fdmi_enabled = 1;
1678
1679         /*
1680          * Setup the necessary fc_host attributes to that will be used to fill
1681          * in the FDMI information.
1682          */
1683
1684         /* Get the PCI-e Device Serial Number Capability */
1685         pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN);
1686         if (pos) {
1687                 pos += 4;
1688                 for (i = 0; i < 8; i++)
1689                         pci_read_config_byte(qedf->pdev, pos + i, &buf[i]);
1690
1691                 snprintf(fc_host_serial_number(lport->host),
1692                     FC_SERIAL_NUMBER_SIZE,
1693                     "%02X%02X%02X%02X%02X%02X%02X%02X",
1694                     buf[7], buf[6], buf[5], buf[4],
1695                     buf[3], buf[2], buf[1], buf[0]);
1696         } else
1697                 snprintf(fc_host_serial_number(lport->host),
1698                     FC_SERIAL_NUMBER_SIZE, "Unknown");
1699
1700         snprintf(fc_host_manufacturer(lport->host),
1701             FC_SERIAL_NUMBER_SIZE, "%s", "Marvell Semiconductor Inc.");
1702
1703         if (qedf->pdev->device == QL45xxx) {
1704                 snprintf(fc_host_model(lport->host),
1705                         FC_SYMBOLIC_NAME_SIZE, "%s", "QL45xxx");
1706
1707                 snprintf(fc_host_model_description(lport->host),
1708                         FC_SYMBOLIC_NAME_SIZE, "%s",
1709                         "Marvell FastLinQ QL45xxx FCoE Adapter");
1710         }
1711
1712         if (qedf->pdev->device == QL41xxx) {
1713                 snprintf(fc_host_model(lport->host),
1714                         FC_SYMBOLIC_NAME_SIZE, "%s", "QL41xxx");
1715
1716                 snprintf(fc_host_model_description(lport->host),
1717                         FC_SYMBOLIC_NAME_SIZE, "%s",
1718                         "Marvell FastLinQ QL41xxx FCoE Adapter");
1719         }
1720
1721         snprintf(fc_host_hardware_version(lport->host),
1722             FC_VERSION_STRING_SIZE, "Rev %d", qedf->pdev->revision);
1723
1724         snprintf(fc_host_driver_version(lport->host),
1725             FC_VERSION_STRING_SIZE, "%s", QEDF_VERSION);
1726
1727         snprintf(fc_host_firmware_version(lport->host),
1728             FC_VERSION_STRING_SIZE, "%d.%d.%d.%d",
1729             FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
1730             FW_ENGINEERING_VERSION);
1731
1732         snprintf(fc_host_vendor_identifier(lport->host),
1733                 FC_VENDOR_IDENTIFIER, "%s", "Marvell");
1734
1735 }
1736
1737 static int qedf_lport_setup(struct qedf_ctx *qedf)
1738 {
1739         struct fc_lport *lport = qedf->lport;
1740
1741         lport->link_up = 0;
1742         lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1743         lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1744         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1745             FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1746         lport->boot_time = jiffies;
1747         lport->e_d_tov = 2 * 1000;
1748         lport->r_a_tov = 10 * 1000;
1749
1750         /* Set NPIV support */
1751         lport->does_npiv = 1;
1752         fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV;
1753
1754         fc_set_wwnn(lport, qedf->wwnn);
1755         fc_set_wwpn(lport, qedf->wwpn);
1756
1757         if (fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0)) {
1758                 QEDF_ERR(&qedf->dbg_ctx,
1759                          "fcoe_libfc_config failed.\n");
1760                 return -ENOMEM;
1761         }
1762
1763         /* Allocate the exchange manager */
1764         fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_PARAMS_NUM_TASKS,
1765                           0xfffe, NULL);
1766
1767         if (fc_lport_init_stats(lport))
1768                 return -ENOMEM;
1769
1770         /* Finish lport config */
1771         fc_lport_config(lport);
1772
1773         /* Set max frame size */
1774         fc_set_mfs(lport, QEDF_MFS);
1775         fc_host_maxframe_size(lport->host) = lport->mfs;
1776
1777         /* Set default dev_loss_tmo based on module parameter */
1778         fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo;
1779
1780         /* Set symbolic node name */
1781         if (qedf->pdev->device == QL45xxx)
1782                 snprintf(fc_host_symbolic_name(lport->host), 256,
1783                         "Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION);
1784
1785         if (qedf->pdev->device == QL41xxx)
1786                 snprintf(fc_host_symbolic_name(lport->host), 256,
1787                         "Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION);
1788
1789         qedf_setup_fdmi(qedf);
1790
1791         return 0;
1792 }
1793
1794 /*
1795  * NPIV functions
1796  */
1797
1798 static int qedf_vport_libfc_config(struct fc_vport *vport,
1799         struct fc_lport *lport)
1800 {
1801         lport->link_up = 0;
1802         lport->qfull = 0;
1803         lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1804         lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1805         lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1806             FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1807         lport->boot_time = jiffies;
1808         lport->e_d_tov = 2 * 1000;
1809         lport->r_a_tov = 10 * 1000;
1810         lport->does_npiv = 1; /* Temporary until we add NPIV support */
1811
1812         /* Allocate stats for vport */
1813         if (fc_lport_init_stats(lport))
1814                 return -ENOMEM;
1815
1816         /* Finish lport config */
1817         fc_lport_config(lport);
1818
1819         /* offload related configuration */
1820         lport->crc_offload = 0;
1821         lport->seq_offload = 0;
1822         lport->lro_enabled = 0;
1823         lport->lro_xid = 0;
1824         lport->lso_max = 0;
1825
1826         return 0;
1827 }
1828
1829 static int qedf_vport_create(struct fc_vport *vport, bool disabled)
1830 {
1831         struct Scsi_Host *shost = vport_to_shost(vport);
1832         struct fc_lport *n_port = shost_priv(shost);
1833         struct fc_lport *vn_port;
1834         struct qedf_ctx *base_qedf = lport_priv(n_port);
1835         struct qedf_ctx *vport_qedf;
1836
1837         char buf[32];
1838         int rc = 0;
1839
1840         rc = fcoe_validate_vport_create(vport);
1841         if (rc) {
1842                 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1843                 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, "
1844                            "WWPN (0x%s) already exists.\n", buf);
1845                 return rc;
1846         }
1847
1848         if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) {
1849                 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport "
1850                            "because link is not up.\n");
1851                 return -EIO;
1852         }
1853
1854         vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx));
1855         if (!vn_port) {
1856                 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport "
1857                            "for vport.\n");
1858                 return -ENOMEM;
1859         }
1860
1861         fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1862         QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n",
1863             buf);
1864
1865         /* Copy some fields from base_qedf */
1866         vport_qedf = lport_priv(vn_port);
1867         memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx));
1868
1869         /* Set qedf data specific to this vport */
1870         vport_qedf->lport = vn_port;
1871         /* Use same hba_lock as base_qedf */
1872         vport_qedf->hba_lock = base_qedf->hba_lock;
1873         vport_qedf->pdev = base_qedf->pdev;
1874         vport_qedf->cmd_mgr = base_qedf->cmd_mgr;
1875         init_completion(&vport_qedf->flogi_compl);
1876         INIT_LIST_HEAD(&vport_qedf->fcports);
1877         INIT_DELAYED_WORK(&vport_qedf->stag_work, qedf_stag_change_work);
1878
1879         rc = qedf_vport_libfc_config(vport, vn_port);
1880         if (rc) {
1881                 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory "
1882                     "for lport stats.\n");
1883                 goto err;
1884         }
1885
1886         fc_set_wwnn(vn_port, vport->node_name);
1887         fc_set_wwpn(vn_port, vport->port_name);
1888         vport_qedf->wwnn = vn_port->wwnn;
1889         vport_qedf->wwpn = vn_port->wwpn;
1890
1891         vn_port->host->transportt = qedf_fc_vport_transport_template;
1892         vn_port->host->can_queue = FCOE_PARAMS_NUM_TASKS;
1893         vn_port->host->max_lun = qedf_max_lun;
1894         vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD;
1895         vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN;
1896         vn_port->host->max_id = QEDF_MAX_SESSIONS;
1897
1898         rc = scsi_add_host(vn_port->host, &vport->dev);
1899         if (rc) {
1900                 QEDF_WARN(&base_qedf->dbg_ctx,
1901                           "Error adding Scsi_Host rc=0x%x.\n", rc);
1902                 goto err;
1903         }
1904
1905         /* Set default dev_loss_tmo based on module parameter */
1906         fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo;
1907
1908         /* Init libfc stuffs */
1909         memcpy(&vn_port->tt, &qedf_lport_template,
1910                 sizeof(qedf_lport_template));
1911         fc_exch_init(vn_port);
1912         fc_elsct_init(vn_port);
1913         fc_lport_init(vn_port);
1914         fc_disc_init(vn_port);
1915         fc_disc_config(vn_port, vn_port);
1916
1917
1918         /* Allocate the exchange manager */
1919         shost = vport_to_shost(vport);
1920         n_port = shost_priv(shost);
1921         fc_exch_mgr_list_clone(n_port, vn_port);
1922
1923         /* Set max frame size */
1924         fc_set_mfs(vn_port, QEDF_MFS);
1925
1926         fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN;
1927
1928         if (disabled) {
1929                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1930         } else {
1931                 vn_port->boot_time = jiffies;
1932                 fc_fabric_login(vn_port);
1933                 fc_vport_setlink(vn_port);
1934         }
1935
1936         /* Set symbolic node name */
1937         if (base_qedf->pdev->device == QL45xxx)
1938                 snprintf(fc_host_symbolic_name(vn_port->host), 256,
1939                          "Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION);
1940
1941         if (base_qedf->pdev->device == QL41xxx)
1942                 snprintf(fc_host_symbolic_name(vn_port->host), 256,
1943                          "Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION);
1944
1945         /* Set supported speed */
1946         fc_host_supported_speeds(vn_port->host) = n_port->link_supported_speeds;
1947
1948         /* Set speed */
1949         vn_port->link_speed = n_port->link_speed;
1950
1951         /* Set port type */
1952         fc_host_port_type(vn_port->host) = FC_PORTTYPE_NPIV;
1953
1954         /* Set maxframe size */
1955         fc_host_maxframe_size(vn_port->host) = n_port->mfs;
1956
1957         QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n",
1958                    vn_port);
1959
1960         /* Set up debug context for vport */
1961         vport_qedf->dbg_ctx.host_no = vn_port->host->host_no;
1962         vport_qedf->dbg_ctx.pdev = base_qedf->pdev;
1963
1964         return 0;
1965
1966 err:
1967         scsi_host_put(vn_port->host);
1968         return rc;
1969 }
1970
1971 static int qedf_vport_destroy(struct fc_vport *vport)
1972 {
1973         struct Scsi_Host *shost = vport_to_shost(vport);
1974         struct fc_lport *n_port = shost_priv(shost);
1975         struct fc_lport *vn_port = vport->dd_data;
1976         struct qedf_ctx *qedf = lport_priv(vn_port);
1977
1978         if (!qedf) {
1979                 QEDF_ERR(NULL, "qedf is NULL.\n");
1980                 goto out;
1981         }
1982
1983         /* Set unloading bit on vport qedf_ctx to prevent more I/O */
1984         set_bit(QEDF_UNLOADING, &qedf->flags);
1985
1986         mutex_lock(&n_port->lp_mutex);
1987         list_del(&vn_port->list);
1988         mutex_unlock(&n_port->lp_mutex);
1989
1990         fc_fabric_logoff(vn_port);
1991         fc_lport_destroy(vn_port);
1992
1993         /* Detach from scsi-ml */
1994         fc_remove_host(vn_port->host);
1995         scsi_remove_host(vn_port->host);
1996
1997         /*
1998          * Only try to release the exchange manager if the vn_port
1999          * configuration is complete.
2000          */
2001         if (vn_port->state == LPORT_ST_READY)
2002                 fc_exch_mgr_free(vn_port);
2003
2004         /* Free memory used by statistical counters */
2005         fc_lport_free_stats(vn_port);
2006
2007         /* Release Scsi_Host */
2008         scsi_host_put(vn_port->host);
2009
2010 out:
2011         return 0;
2012 }
2013
2014 static int qedf_vport_disable(struct fc_vport *vport, bool disable)
2015 {
2016         struct fc_lport *lport = vport->dd_data;
2017
2018         if (disable) {
2019                 fc_vport_set_state(vport, FC_VPORT_DISABLED);
2020                 fc_fabric_logoff(lport);
2021         } else {
2022                 lport->boot_time = jiffies;
2023                 fc_fabric_login(lport);
2024                 fc_vport_setlink(lport);
2025         }
2026         return 0;
2027 }
2028
2029 /*
2030  * During removal we need to wait for all the vports associated with a port
2031  * to be destroyed so we avoid a race condition where libfc is still trying
2032  * to reap vports while the driver remove function has already reaped the
2033  * driver contexts associated with the physical port.
2034  */
2035 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf)
2036 {
2037         struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host);
2038
2039         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
2040             "Entered.\n");
2041         while (fc_host->npiv_vports_inuse > 0) {
2042                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
2043                     "Waiting for all vports to be reaped.\n");
2044                 msleep(1000);
2045         }
2046 }
2047
2048 /**
2049  * qedf_fcoe_reset - Resets the fcoe
2050  *
2051  * @shost: shost the reset is from
2052  *
2053  * Returns: always 0
2054  */
2055 static int qedf_fcoe_reset(struct Scsi_Host *shost)
2056 {
2057         struct fc_lport *lport = shost_priv(shost);
2058
2059         qedf_ctx_soft_reset(lport);
2060         return 0;
2061 }
2062
2063 static void qedf_get_host_port_id(struct Scsi_Host *shost)
2064 {
2065         struct fc_lport *lport = shost_priv(shost);
2066
2067         fc_host_port_id(shost) = lport->port_id;
2068 }
2069
2070 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host
2071         *shost)
2072 {
2073         struct fc_host_statistics *qedf_stats;
2074         struct fc_lport *lport = shost_priv(shost);
2075         struct qedf_ctx *qedf = lport_priv(lport);
2076         struct qed_fcoe_stats *fw_fcoe_stats;
2077
2078         qedf_stats = fc_get_host_stats(shost);
2079
2080         /* We don't collect offload stats for specific NPIV ports */
2081         if (lport->vport)
2082                 goto out;
2083
2084         fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL);
2085         if (!fw_fcoe_stats) {
2086                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for "
2087                     "fw_fcoe_stats.\n");
2088                 goto out;
2089         }
2090
2091         mutex_lock(&qedf->stats_mutex);
2092
2093         /* Query firmware for offload stats */
2094         qed_ops->get_stats(qedf->cdev, fw_fcoe_stats);
2095
2096         /*
2097          * The expectation is that we add our offload stats to the stats
2098          * being maintained by libfc each time the fc_get_host_status callback
2099          * is invoked. The additions are not carried over for each call to
2100          * the fc_get_host_stats callback.
2101          */
2102         qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt +
2103             fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt +
2104             fw_fcoe_stats->fcoe_tx_other_pkt_cnt;
2105         qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt +
2106             fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt +
2107             fw_fcoe_stats->fcoe_rx_other_pkt_cnt;
2108         qedf_stats->fcp_input_megabytes +=
2109             do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000);
2110         qedf_stats->fcp_output_megabytes +=
2111             do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000);
2112         qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4;
2113         qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4;
2114         qedf_stats->invalid_crc_count +=
2115             fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt;
2116         qedf_stats->dumped_frames =
2117             fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
2118         qedf_stats->error_frames +=
2119             fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
2120         qedf_stats->fcp_input_requests += qedf->input_requests;
2121         qedf_stats->fcp_output_requests += qedf->output_requests;
2122         qedf_stats->fcp_control_requests += qedf->control_requests;
2123         qedf_stats->fcp_packet_aborts += qedf->packet_aborts;
2124         qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures;
2125
2126         mutex_unlock(&qedf->stats_mutex);
2127         kfree(fw_fcoe_stats);
2128 out:
2129         return qedf_stats;
2130 }
2131
2132 static struct fc_function_template qedf_fc_transport_fn = {
2133         .show_host_node_name = 1,
2134         .show_host_port_name = 1,
2135         .show_host_supported_classes = 1,
2136         .show_host_supported_fc4s = 1,
2137         .show_host_active_fc4s = 1,
2138         .show_host_maxframe_size = 1,
2139
2140         .get_host_port_id = qedf_get_host_port_id,
2141         .show_host_port_id = 1,
2142         .show_host_supported_speeds = 1,
2143         .get_host_speed = fc_get_host_speed,
2144         .show_host_speed = 1,
2145         .show_host_port_type = 1,
2146         .get_host_port_state = fc_get_host_port_state,
2147         .show_host_port_state = 1,
2148         .show_host_symbolic_name = 1,
2149
2150         /*
2151          * Tell FC transport to allocate enough space to store the backpointer
2152          * for the associate qedf_rport struct.
2153          */
2154         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2155                                 sizeof(struct qedf_rport)),
2156         .show_rport_maxframe_size = 1,
2157         .show_rport_supported_classes = 1,
2158         .show_host_fabric_name = 1,
2159         .show_starget_node_name = 1,
2160         .show_starget_port_name = 1,
2161         .show_starget_port_id = 1,
2162         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2163         .show_rport_dev_loss_tmo = 1,
2164         .get_fc_host_stats = qedf_fc_get_host_stats,
2165         .issue_fc_host_lip = qedf_fcoe_reset,
2166         .vport_create = qedf_vport_create,
2167         .vport_delete = qedf_vport_destroy,
2168         .vport_disable = qedf_vport_disable,
2169         .bsg_request = fc_lport_bsg_request,
2170 };
2171
2172 static struct fc_function_template qedf_fc_vport_transport_fn = {
2173         .show_host_node_name = 1,
2174         .show_host_port_name = 1,
2175         .show_host_supported_classes = 1,
2176         .show_host_supported_fc4s = 1,
2177         .show_host_active_fc4s = 1,
2178         .show_host_maxframe_size = 1,
2179         .show_host_port_id = 1,
2180         .show_host_supported_speeds = 1,
2181         .get_host_speed = fc_get_host_speed,
2182         .show_host_speed = 1,
2183         .show_host_port_type = 1,
2184         .get_host_port_state = fc_get_host_port_state,
2185         .show_host_port_state = 1,
2186         .show_host_symbolic_name = 1,
2187         .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2188                                 sizeof(struct qedf_rport)),
2189         .show_rport_maxframe_size = 1,
2190         .show_rport_supported_classes = 1,
2191         .show_host_fabric_name = 1,
2192         .show_starget_node_name = 1,
2193         .show_starget_port_name = 1,
2194         .show_starget_port_id = 1,
2195         .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2196         .show_rport_dev_loss_tmo = 1,
2197         .get_fc_host_stats = fc_get_host_stats,
2198         .issue_fc_host_lip = qedf_fcoe_reset,
2199         .bsg_request = fc_lport_bsg_request,
2200 };
2201
2202 static bool qedf_fp_has_work(struct qedf_fastpath *fp)
2203 {
2204         struct qedf_ctx *qedf = fp->qedf;
2205         struct global_queue *que;
2206         struct qed_sb_info *sb_info = fp->sb_info;
2207         struct status_block *sb = sb_info->sb_virt;
2208         u16 prod_idx;
2209
2210         /* Get the pointer to the global CQ this completion is on */
2211         que = qedf->global_queues[fp->sb_id];
2212
2213         /* Be sure all responses have been written to PI */
2214         rmb();
2215
2216         /* Get the current firmware producer index */
2217         prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
2218
2219         return (que->cq_prod_idx != prod_idx);
2220 }
2221
2222 /*
2223  * Interrupt handler code.
2224  */
2225
2226 /* Process completion queue and copy CQE contents for deferred processesing
2227  *
2228  * Return true if we should wake the I/O thread, false if not.
2229  */
2230 static bool qedf_process_completions(struct qedf_fastpath *fp)
2231 {
2232         struct qedf_ctx *qedf = fp->qedf;
2233         struct qed_sb_info *sb_info = fp->sb_info;
2234         struct status_block *sb = sb_info->sb_virt;
2235         struct global_queue *que;
2236         u16 prod_idx;
2237         struct fcoe_cqe *cqe;
2238         struct qedf_io_work *io_work;
2239         unsigned int cpu;
2240         struct qedf_ioreq *io_req = NULL;
2241         u16 xid;
2242         u16 new_cqes;
2243         u32 comp_type;
2244
2245         /* Get the current firmware producer index */
2246         prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
2247
2248         /* Get the pointer to the global CQ this completion is on */
2249         que = qedf->global_queues[fp->sb_id];
2250
2251         /* Calculate the amount of new elements since last processing */
2252         new_cqes = (prod_idx >= que->cq_prod_idx) ?
2253             (prod_idx - que->cq_prod_idx) :
2254             0x10000 - que->cq_prod_idx + prod_idx;
2255
2256         /* Save producer index */
2257         que->cq_prod_idx = prod_idx;
2258
2259         while (new_cqes) {
2260                 fp->completions++;
2261                 cqe = &que->cq[que->cq_cons_idx];
2262
2263                 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2264                     FCOE_CQE_CQE_TYPE_MASK;
2265
2266                 /*
2267                  * Process unsolicited CQEs directly in the interrupt handler
2268                  * sine we need the fastpath ID
2269                  */
2270                 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) {
2271                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL,
2272                            "Unsolicated CQE.\n");
2273                         qedf_process_unsol_compl(qedf, fp->sb_id, cqe);
2274                         /*
2275                          * Don't add a work list item.  Increment consumer
2276                          * consumer index and move on.
2277                          */
2278                         goto inc_idx;
2279                 }
2280
2281                 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2282                 io_req = &qedf->cmd_mgr->cmds[xid];
2283
2284                 /*
2285                  * Figure out which percpu thread we should queue this I/O
2286                  * on.
2287                  */
2288                 if (!io_req)
2289                         /* If there is not io_req associated with this CQE
2290                          * just queue it on CPU 0
2291                          */
2292                         cpu = 0;
2293                 else {
2294                         cpu = io_req->cpu;
2295                         io_req->int_cpu = smp_processor_id();
2296                 }
2297
2298                 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC);
2299                 if (!io_work) {
2300                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate "
2301                                    "work for I/O completion.\n");
2302                         continue;
2303                 }
2304                 memset(io_work, 0, sizeof(struct qedf_io_work));
2305
2306                 INIT_WORK(&io_work->work, qedf_fp_io_handler);
2307
2308                 /* Copy contents of CQE for deferred processing */
2309                 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe));
2310
2311                 io_work->qedf = fp->qedf;
2312                 io_work->fp = NULL; /* Only used for unsolicited frames */
2313
2314                 queue_work_on(cpu, qedf_io_wq, &io_work->work);
2315
2316 inc_idx:
2317                 que->cq_cons_idx++;
2318                 if (que->cq_cons_idx == fp->cq_num_entries)
2319                         que->cq_cons_idx = 0;
2320                 new_cqes--;
2321         }
2322
2323         return true;
2324 }
2325
2326
2327 /* MSI-X fastpath handler code */
2328 static irqreturn_t qedf_msix_handler(int irq, void *dev_id)
2329 {
2330         struct qedf_fastpath *fp = dev_id;
2331
2332         if (!fp) {
2333                 QEDF_ERR(NULL, "fp is null.\n");
2334                 return IRQ_HANDLED;
2335         }
2336         if (!fp->sb_info) {
2337                 QEDF_ERR(NULL, "fp->sb_info in null.");
2338                 return IRQ_HANDLED;
2339         }
2340
2341         /*
2342          * Disable interrupts for this status block while we process new
2343          * completions
2344          */
2345         qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/);
2346
2347         while (1) {
2348                 qedf_process_completions(fp);
2349
2350                 if (qedf_fp_has_work(fp) == 0) {
2351                         /* Update the sb information */
2352                         qed_sb_update_sb_idx(fp->sb_info);
2353
2354                         /* Check for more work */
2355                         rmb();
2356
2357                         if (qedf_fp_has_work(fp) == 0) {
2358                                 /* Re-enable interrupts */
2359                                 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
2360                                 return IRQ_HANDLED;
2361                         }
2362                 }
2363         }
2364
2365         /* Do we ever want to break out of above loop? */
2366         return IRQ_HANDLED;
2367 }
2368
2369 /* simd handler for MSI/INTa */
2370 static void qedf_simd_int_handler(void *cookie)
2371 {
2372         /* Cookie is qedf_ctx struct */
2373         struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2374
2375         QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf);
2376 }
2377
2378 #define QEDF_SIMD_HANDLER_NUM           0
2379 static void qedf_sync_free_irqs(struct qedf_ctx *qedf)
2380 {
2381         int i;
2382         u16 vector_idx = 0;
2383         u32 vector;
2384
2385         if (qedf->int_info.msix_cnt) {
2386                 for (i = 0; i < qedf->int_info.used_cnt; i++) {
2387                         vector_idx = i * qedf->dev_info.common.num_hwfns +
2388                                 qed_ops->common->get_affin_hwfn_idx(qedf->cdev);
2389                         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
2390                                   "Freeing IRQ #%d vector_idx=%d.\n",
2391                                   i, vector_idx);
2392                         vector = qedf->int_info.msix[vector_idx].vector;
2393                         synchronize_irq(vector);
2394                         irq_set_affinity_hint(vector, NULL);
2395                         irq_set_affinity_notifier(vector, NULL);
2396                         free_irq(vector, &qedf->fp_array[i]);
2397                 }
2398         } else
2399                 qed_ops->common->simd_handler_clean(qedf->cdev,
2400                     QEDF_SIMD_HANDLER_NUM);
2401
2402         qedf->int_info.used_cnt = 0;
2403         qed_ops->common->set_fp_int(qedf->cdev, 0);
2404 }
2405
2406 static int qedf_request_msix_irq(struct qedf_ctx *qedf)
2407 {
2408         int i, rc, cpu;
2409         u16 vector_idx = 0;
2410         u32 vector;
2411
2412         cpu = cpumask_first(cpu_online_mask);
2413         for (i = 0; i < qedf->num_queues; i++) {
2414                 vector_idx = i * qedf->dev_info.common.num_hwfns +
2415                         qed_ops->common->get_affin_hwfn_idx(qedf->cdev);
2416                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
2417                           "Requesting IRQ #%d vector_idx=%d.\n",
2418                           i, vector_idx);
2419                 vector = qedf->int_info.msix[vector_idx].vector;
2420                 rc = request_irq(vector, qedf_msix_handler, 0, "qedf",
2421                                  &qedf->fp_array[i]);
2422
2423                 if (rc) {
2424                         QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n");
2425                         qedf_sync_free_irqs(qedf);
2426                         return rc;
2427                 }
2428
2429                 qedf->int_info.used_cnt++;
2430                 rc = irq_set_affinity_hint(vector, get_cpu_mask(cpu));
2431                 cpu = cpumask_next(cpu, cpu_online_mask);
2432         }
2433
2434         return 0;
2435 }
2436
2437 static int qedf_setup_int(struct qedf_ctx *qedf)
2438 {
2439         int rc = 0;
2440
2441         /*
2442          * Learn interrupt configuration
2443          */
2444         rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus());
2445         if (rc <= 0)
2446                 return 0;
2447
2448         rc  = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info);
2449         if (rc)
2450                 return 0;
2451
2452         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = "
2453                    "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt,
2454                    num_online_cpus());
2455
2456         if (qedf->int_info.msix_cnt)
2457                 return qedf_request_msix_irq(qedf);
2458
2459         qed_ops->common->simd_handler_config(qedf->cdev, &qedf,
2460             QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler);
2461         qedf->int_info.used_cnt = 1;
2462
2463         QEDF_ERR(&qedf->dbg_ctx,
2464                  "Cannot load driver due to a lack of MSI-X vectors.\n");
2465         return -EINVAL;
2466 }
2467
2468 /* Main function for libfc frame reception */
2469 static void qedf_recv_frame(struct qedf_ctx *qedf,
2470         struct sk_buff *skb)
2471 {
2472         u32 fr_len;
2473         struct fc_lport *lport;
2474         struct fc_frame_header *fh;
2475         struct fcoe_crc_eof crc_eof;
2476         struct fc_frame *fp;
2477         u8 *mac = NULL;
2478         u8 *dest_mac = NULL;
2479         struct fcoe_hdr *hp;
2480         struct qedf_rport *fcport;
2481         struct fc_lport *vn_port;
2482         u32 f_ctl;
2483
2484         lport = qedf->lport;
2485         if (lport == NULL || lport->state == LPORT_ST_DISABLED) {
2486                 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n");
2487                 kfree_skb(skb);
2488                 return;
2489         }
2490
2491         if (skb_is_nonlinear(skb))
2492                 skb_linearize(skb);
2493         mac = eth_hdr(skb)->h_source;
2494         dest_mac = eth_hdr(skb)->h_dest;
2495
2496         /* Pull the header */
2497         hp = (struct fcoe_hdr *)skb->data;
2498         fh = (struct fc_frame_header *) skb_transport_header(skb);
2499         skb_pull(skb, sizeof(struct fcoe_hdr));
2500         fr_len = skb->len - sizeof(struct fcoe_crc_eof);
2501
2502         fp = (struct fc_frame *)skb;
2503         fc_frame_init(fp);
2504         fr_dev(fp) = lport;
2505         fr_sof(fp) = hp->fcoe_sof;
2506         if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
2507                 QEDF_INFO(NULL, QEDF_LOG_LL2, "skb_copy_bits failed.\n");
2508                 kfree_skb(skb);
2509                 return;
2510         }
2511         fr_eof(fp) = crc_eof.fcoe_eof;
2512         fr_crc(fp) = crc_eof.fcoe_crc32;
2513         if (pskb_trim(skb, fr_len)) {
2514                 QEDF_INFO(NULL, QEDF_LOG_LL2, "pskb_trim failed.\n");
2515                 kfree_skb(skb);
2516                 return;
2517         }
2518
2519         fh = fc_frame_header_get(fp);
2520
2521         /*
2522          * Invalid frame filters.
2523          */
2524
2525         if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
2526             fh->fh_type == FC_TYPE_FCP) {
2527                 /* Drop FCP data. We dont this in L2 path */
2528                 kfree_skb(skb);
2529                 return;
2530         }
2531         if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
2532             fh->fh_type == FC_TYPE_ELS) {
2533                 switch (fc_frame_payload_op(fp)) {
2534                 case ELS_LOGO:
2535                         if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
2536                                 /* drop non-FIP LOGO */
2537                                 kfree_skb(skb);
2538                                 return;
2539                         }
2540                         break;
2541                 }
2542         }
2543
2544         if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
2545                 /* Drop incoming ABTS */
2546                 kfree_skb(skb);
2547                 return;
2548         }
2549
2550         if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
2551                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2552                     "FC frame d_id mismatch with MAC %pM.\n", dest_mac);
2553                 kfree_skb(skb);
2554                 return;
2555         }
2556
2557         if (qedf->ctlr.state) {
2558                 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) {
2559                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2560                             "Wrong source address: mac:%pM dest_addr:%pM.\n",
2561                             mac, qedf->ctlr.dest_addr);
2562                         kfree_skb(skb);
2563                         return;
2564                 }
2565         }
2566
2567         vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
2568
2569         /*
2570          * If the destination ID from the frame header does not match what we
2571          * have on record for lport and the search for a NPIV port came up
2572          * empty then this is not addressed to our port so simply drop it.
2573          */
2574         if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
2575                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2576                           "Dropping frame due to destination mismatch: lport->port_id=0x%x fh->d_id=0x%x.\n",
2577                           lport->port_id, ntoh24(fh->fh_d_id));
2578                 kfree_skb(skb);
2579                 return;
2580         }
2581
2582         f_ctl = ntoh24(fh->fh_f_ctl);
2583         if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) &&
2584             (f_ctl & FC_FC_EX_CTX)) {
2585                 /* Drop incoming ABTS response that has both SEQ/EX CTX set */
2586                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2587                           "Dropping ABTS response as both SEQ/EX CTX set.\n");
2588                 kfree_skb(skb);
2589                 return;
2590         }
2591
2592         /*
2593          * If a connection is uploading, drop incoming FCoE frames as there
2594          * is a small window where we could try to return a frame while libfc
2595          * is trying to clean things up.
2596          */
2597
2598         /* Get fcport associated with d_id if it exists */
2599         fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
2600
2601         if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
2602             &fcport->flags)) {
2603                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2604                     "Connection uploading, dropping fp=%p.\n", fp);
2605                 kfree_skb(skb);
2606                 return;
2607         }
2608
2609         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: "
2610             "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp,
2611             ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl,
2612             fh->fh_type);
2613         if (qedf_dump_frames)
2614                 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
2615                     1, skb->data, skb->len, false);
2616         fc_exch_recv(lport, fp);
2617 }
2618
2619 static void qedf_ll2_process_skb(struct work_struct *work)
2620 {
2621         struct qedf_skb_work *skb_work =
2622             container_of(work, struct qedf_skb_work, work);
2623         struct qedf_ctx *qedf = skb_work->qedf;
2624         struct sk_buff *skb = skb_work->skb;
2625         struct ethhdr *eh;
2626
2627         if (!qedf) {
2628                 QEDF_ERR(NULL, "qedf is NULL\n");
2629                 goto err_out;
2630         }
2631
2632         eh = (struct ethhdr *)skb->data;
2633
2634         /* Undo VLAN encapsulation */
2635         if (eh->h_proto == htons(ETH_P_8021Q)) {
2636                 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
2637                 eh = skb_pull(skb, VLAN_HLEN);
2638                 skb_reset_mac_header(skb);
2639         }
2640
2641         /*
2642          * Process either a FIP frame or FCoE frame based on the
2643          * protocol value.  If it's not either just drop the
2644          * frame.
2645          */
2646         if (eh->h_proto == htons(ETH_P_FIP)) {
2647                 qedf_fip_recv(qedf, skb);
2648                 goto out;
2649         } else if (eh->h_proto == htons(ETH_P_FCOE)) {
2650                 __skb_pull(skb, ETH_HLEN);
2651                 qedf_recv_frame(qedf, skb);
2652                 goto out;
2653         } else
2654                 goto err_out;
2655
2656 err_out:
2657         kfree_skb(skb);
2658 out:
2659         kfree(skb_work);
2660         return;
2661 }
2662
2663 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb,
2664         u32 arg1, u32 arg2)
2665 {
2666         struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2667         struct qedf_skb_work *skb_work;
2668
2669         if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
2670                 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2671                           "Dropping frame as link state is down.\n");
2672                 kfree_skb(skb);
2673                 return 0;
2674         }
2675
2676         skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC);
2677         if (!skb_work) {
2678                 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so "
2679                            "dropping frame.\n");
2680                 kfree_skb(skb);
2681                 return 0;
2682         }
2683
2684         INIT_WORK(&skb_work->work, qedf_ll2_process_skb);
2685         skb_work->skb = skb;
2686         skb_work->qedf = qedf;
2687         queue_work(qedf->ll2_recv_wq, &skb_work->work);
2688
2689         return 0;
2690 }
2691
2692 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = {
2693         .rx_cb = qedf_ll2_rx,
2694         .tx_cb = NULL,
2695 };
2696
2697 /* Main thread to process I/O completions */
2698 void qedf_fp_io_handler(struct work_struct *work)
2699 {
2700         struct qedf_io_work *io_work =
2701             container_of(work, struct qedf_io_work, work);
2702         u32 comp_type;
2703
2704         /*
2705          * Deferred part of unsolicited CQE sends
2706          * frame to libfc.
2707          */
2708         comp_type = (io_work->cqe.cqe_data >>
2709             FCOE_CQE_CQE_TYPE_SHIFT) &
2710             FCOE_CQE_CQE_TYPE_MASK;
2711         if (comp_type == FCOE_UNSOLIC_CQE_TYPE &&
2712             io_work->fp)
2713                 fc_exch_recv(io_work->qedf->lport, io_work->fp);
2714         else
2715                 qedf_process_cqe(io_work->qedf, &io_work->cqe);
2716
2717         kfree(io_work);
2718 }
2719
2720 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf,
2721         struct qed_sb_info *sb_info, u16 sb_id)
2722 {
2723         struct status_block *sb_virt;
2724         dma_addr_t sb_phys;
2725         int ret;
2726
2727         sb_virt = dma_alloc_coherent(&qedf->pdev->dev,
2728             sizeof(struct status_block), &sb_phys, GFP_KERNEL);
2729
2730         if (!sb_virt) {
2731                 QEDF_ERR(&qedf->dbg_ctx,
2732                          "Status block allocation failed for id = %d.\n",
2733                          sb_id);
2734                 return -ENOMEM;
2735         }
2736
2737         ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys,
2738             sb_id, QED_SB_TYPE_STORAGE);
2739
2740         if (ret) {
2741                 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_virt), sb_virt, sb_phys);
2742                 QEDF_ERR(&qedf->dbg_ctx,
2743                          "Status block initialization failed (0x%x) for id = %d.\n",
2744                          ret, sb_id);
2745                 return ret;
2746         }
2747
2748         return 0;
2749 }
2750
2751 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info)
2752 {
2753         if (sb_info->sb_virt)
2754                 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt),
2755                     (void *)sb_info->sb_virt, sb_info->sb_phys);
2756 }
2757
2758 static void qedf_destroy_sb(struct qedf_ctx *qedf)
2759 {
2760         int id;
2761         struct qedf_fastpath *fp = NULL;
2762
2763         for (id = 0; id < qedf->num_queues; id++) {
2764                 fp = &(qedf->fp_array[id]);
2765                 if (fp->sb_id == QEDF_SB_ID_NULL)
2766                         break;
2767                 qedf_free_sb(qedf, fp->sb_info);
2768                 kfree(fp->sb_info);
2769         }
2770         kfree(qedf->fp_array);
2771 }
2772
2773 static int qedf_prepare_sb(struct qedf_ctx *qedf)
2774 {
2775         int id;
2776         struct qedf_fastpath *fp;
2777         int ret;
2778
2779         qedf->fp_array =
2780             kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath),
2781                 GFP_KERNEL);
2782
2783         if (!qedf->fp_array) {
2784                 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation "
2785                           "failed.\n");
2786                 return -ENOMEM;
2787         }
2788
2789         for (id = 0; id < qedf->num_queues; id++) {
2790                 fp = &(qedf->fp_array[id]);
2791                 fp->sb_id = QEDF_SB_ID_NULL;
2792                 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL);
2793                 if (!fp->sb_info) {
2794                         QEDF_ERR(&(qedf->dbg_ctx), "SB info struct "
2795                                   "allocation failed.\n");
2796                         goto err;
2797                 }
2798                 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id);
2799                 if (ret) {
2800                         QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and "
2801                                   "initialization failed.\n");
2802                         goto err;
2803                 }
2804                 fp->sb_id = id;
2805                 fp->qedf = qedf;
2806                 fp->cq_num_entries =
2807                     qedf->global_queues[id]->cq_mem_size /
2808                     sizeof(struct fcoe_cqe);
2809         }
2810 err:
2811         return 0;
2812 }
2813
2814 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe)
2815 {
2816         u16 xid;
2817         struct qedf_ioreq *io_req;
2818         struct qedf_rport *fcport;
2819         u32 comp_type;
2820         u8 io_comp_type;
2821         unsigned long flags;
2822
2823         comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2824             FCOE_CQE_CQE_TYPE_MASK;
2825
2826         xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2827         io_req = &qedf->cmd_mgr->cmds[xid];
2828
2829         /* Completion not for a valid I/O anymore so just return */
2830         if (!io_req) {
2831                 QEDF_ERR(&qedf->dbg_ctx,
2832                          "io_req is NULL for xid=0x%x.\n", xid);
2833                 return;
2834         }
2835
2836         fcport = io_req->fcport;
2837
2838         if (fcport == NULL) {
2839                 QEDF_ERR(&qedf->dbg_ctx,
2840                          "fcport is NULL for xid=0x%x io_req=%p.\n",
2841                          xid, io_req);
2842                 return;
2843         }
2844
2845         /*
2846          * Check that fcport is offloaded.  If it isn't then the spinlock
2847          * isn't valid and shouldn't be taken. We should just return.
2848          */
2849         if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
2850                 QEDF_ERR(&qedf->dbg_ctx,
2851                          "Session not offloaded yet, fcport = %p.\n", fcport);
2852                 return;
2853         }
2854
2855         spin_lock_irqsave(&fcport->rport_lock, flags);
2856         io_comp_type = io_req->cmd_type;
2857         spin_unlock_irqrestore(&fcport->rport_lock, flags);
2858
2859         switch (comp_type) {
2860         case FCOE_GOOD_COMPLETION_CQE_TYPE:
2861                 atomic_inc(&fcport->free_sqes);
2862                 switch (io_comp_type) {
2863                 case QEDF_SCSI_CMD:
2864                         qedf_scsi_completion(qedf, cqe, io_req);
2865                         break;
2866                 case QEDF_ELS:
2867                         qedf_process_els_compl(qedf, cqe, io_req);
2868                         break;
2869                 case QEDF_TASK_MGMT_CMD:
2870                         qedf_process_tmf_compl(qedf, cqe, io_req);
2871                         break;
2872                 case QEDF_SEQ_CLEANUP:
2873                         qedf_process_seq_cleanup_compl(qedf, cqe, io_req);
2874                         break;
2875                 }
2876                 break;
2877         case FCOE_ERROR_DETECTION_CQE_TYPE:
2878                 atomic_inc(&fcport->free_sqes);
2879                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2880                     "Error detect CQE.\n");
2881                 qedf_process_error_detect(qedf, cqe, io_req);
2882                 break;
2883         case FCOE_EXCH_CLEANUP_CQE_TYPE:
2884                 atomic_inc(&fcport->free_sqes);
2885                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2886                     "Cleanup CQE.\n");
2887                 qedf_process_cleanup_compl(qedf, cqe, io_req);
2888                 break;
2889         case FCOE_ABTS_CQE_TYPE:
2890                 atomic_inc(&fcport->free_sqes);
2891                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2892                     "Abort CQE.\n");
2893                 qedf_process_abts_compl(qedf, cqe, io_req);
2894                 break;
2895         case FCOE_DUMMY_CQE_TYPE:
2896                 atomic_inc(&fcport->free_sqes);
2897                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2898                     "Dummy CQE.\n");
2899                 break;
2900         case FCOE_LOCAL_COMP_CQE_TYPE:
2901                 atomic_inc(&fcport->free_sqes);
2902                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2903                     "Local completion CQE.\n");
2904                 break;
2905         case FCOE_WARNING_CQE_TYPE:
2906                 atomic_inc(&fcport->free_sqes);
2907                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2908                     "Warning CQE.\n");
2909                 qedf_process_warning_compl(qedf, cqe, io_req);
2910                 break;
2911         case MAX_FCOE_CQE_TYPE:
2912                 atomic_inc(&fcport->free_sqes);
2913                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2914                     "Max FCoE CQE.\n");
2915                 break;
2916         default:
2917                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2918                     "Default CQE.\n");
2919                 break;
2920         }
2921 }
2922
2923 static void qedf_free_bdq(struct qedf_ctx *qedf)
2924 {
2925         int i;
2926
2927         if (qedf->bdq_pbl_list)
2928                 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE,
2929                     qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma);
2930
2931         if (qedf->bdq_pbl)
2932                 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size,
2933                     qedf->bdq_pbl, qedf->bdq_pbl_dma);
2934
2935         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2936                 if (qedf->bdq[i].buf_addr) {
2937                         dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE,
2938                             qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma);
2939                 }
2940         }
2941 }
2942
2943 static void qedf_free_global_queues(struct qedf_ctx *qedf)
2944 {
2945         int i;
2946         struct global_queue **gl = qedf->global_queues;
2947
2948         for (i = 0; i < qedf->num_queues; i++) {
2949                 if (!gl[i])
2950                         continue;
2951
2952                 if (gl[i]->cq)
2953                         dma_free_coherent(&qedf->pdev->dev,
2954                             gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma);
2955                 if (gl[i]->cq_pbl)
2956                         dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size,
2957                             gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
2958
2959                 kfree(gl[i]);
2960         }
2961
2962         qedf_free_bdq(qedf);
2963 }
2964
2965 static int qedf_alloc_bdq(struct qedf_ctx *qedf)
2966 {
2967         int i;
2968         struct scsi_bd *pbl;
2969         u64 *list;
2970
2971         /* Alloc dma memory for BDQ buffers */
2972         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2973                 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev,
2974                     QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL);
2975                 if (!qedf->bdq[i].buf_addr) {
2976                         QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ "
2977                             "buffer %d.\n", i);
2978                         return -ENOMEM;
2979                 }
2980         }
2981
2982         /* Alloc dma memory for BDQ page buffer list */
2983         qedf->bdq_pbl_mem_size =
2984             QEDF_BDQ_SIZE * sizeof(struct scsi_bd);
2985         qedf->bdq_pbl_mem_size =
2986             ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE);
2987
2988         qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
2989             qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL);
2990         if (!qedf->bdq_pbl) {
2991                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n");
2992                 return -ENOMEM;
2993         }
2994
2995         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2996                   "BDQ PBL addr=0x%p dma=%pad\n",
2997                   qedf->bdq_pbl, &qedf->bdq_pbl_dma);
2998
2999         /*
3000          * Populate BDQ PBL with physical and virtual address of individual
3001          * BDQ buffers
3002          */
3003         pbl = (struct scsi_bd *)qedf->bdq_pbl;
3004         for (i = 0; i < QEDF_BDQ_SIZE; i++) {
3005                 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma));
3006                 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma));
3007                 pbl->opaque.fcoe_opaque.hi = 0;
3008                 /* Opaque lo data is an index into the BDQ array */
3009                 pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i);
3010                 pbl++;
3011         }
3012
3013         /* Allocate list of PBL pages */
3014         qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev,
3015                                                 QEDF_PAGE_SIZE,
3016                                                 &qedf->bdq_pbl_list_dma,
3017                                                 GFP_KERNEL);
3018         if (!qedf->bdq_pbl_list) {
3019                 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n");
3020                 return -ENOMEM;
3021         }
3022
3023         /*
3024          * Now populate PBL list with pages that contain pointers to the
3025          * individual buffers.
3026          */
3027         qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size /
3028             QEDF_PAGE_SIZE;
3029         list = (u64 *)qedf->bdq_pbl_list;
3030         for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) {
3031                 *list = qedf->bdq_pbl_dma;
3032                 list++;
3033         }
3034
3035         return 0;
3036 }
3037
3038 static int qedf_alloc_global_queues(struct qedf_ctx *qedf)
3039 {
3040         u32 *list;
3041         int i;
3042         int status;
3043         u32 *pbl;
3044         dma_addr_t page;
3045         int num_pages;
3046
3047         /* Allocate and map CQs, RQs */
3048         /*
3049          * Number of global queues (CQ / RQ). This should
3050          * be <= number of available MSIX vectors for the PF
3051          */
3052         if (!qedf->num_queues) {
3053                 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n");
3054                 return -ENOMEM;
3055         }
3056
3057         /*
3058          * Make sure we allocated the PBL that will contain the physical
3059          * addresses of our queues
3060          */
3061         if (!qedf->p_cpuq) {
3062                 QEDF_ERR(&qedf->dbg_ctx, "p_cpuq is NULL.\n");
3063                 return -EINVAL;
3064         }
3065
3066         qedf->global_queues = kzalloc((sizeof(struct global_queue *)
3067             * qedf->num_queues), GFP_KERNEL);
3068         if (!qedf->global_queues) {
3069                 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global "
3070                           "queues array ptr memory\n");
3071                 return -ENOMEM;
3072         }
3073         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3074                    "qedf->global_queues=%p.\n", qedf->global_queues);
3075
3076         /* Allocate DMA coherent buffers for BDQ */
3077         status = qedf_alloc_bdq(qedf);
3078         if (status) {
3079                 QEDF_ERR(&qedf->dbg_ctx, "Unable to allocate bdq.\n");
3080                 goto mem_alloc_failure;
3081         }
3082
3083         /* Allocate a CQ and an associated PBL for each MSI-X vector */
3084         for (i = 0; i < qedf->num_queues; i++) {
3085                 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue),
3086                     GFP_KERNEL);
3087                 if (!qedf->global_queues[i]) {
3088                         QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate "
3089                                    "global queue %d.\n", i);
3090                         status = -ENOMEM;
3091                         goto mem_alloc_failure;
3092                 }
3093
3094                 qedf->global_queues[i]->cq_mem_size =
3095                     FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
3096                 qedf->global_queues[i]->cq_mem_size =
3097                     ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE);
3098
3099                 qedf->global_queues[i]->cq_pbl_size =
3100                     (qedf->global_queues[i]->cq_mem_size /
3101                     PAGE_SIZE) * sizeof(void *);
3102                 qedf->global_queues[i]->cq_pbl_size =
3103                     ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE);
3104
3105                 qedf->global_queues[i]->cq =
3106                     dma_alloc_coherent(&qedf->pdev->dev,
3107                                        qedf->global_queues[i]->cq_mem_size,
3108                                        &qedf->global_queues[i]->cq_dma,
3109                                        GFP_KERNEL);
3110
3111                 if (!qedf->global_queues[i]->cq) {
3112                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n");
3113                         status = -ENOMEM;
3114                         goto mem_alloc_failure;
3115                 }
3116
3117                 qedf->global_queues[i]->cq_pbl =
3118                     dma_alloc_coherent(&qedf->pdev->dev,
3119                                        qedf->global_queues[i]->cq_pbl_size,
3120                                        &qedf->global_queues[i]->cq_pbl_dma,
3121                                        GFP_KERNEL);
3122
3123                 if (!qedf->global_queues[i]->cq_pbl) {
3124                         QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n");
3125                         status = -ENOMEM;
3126                         goto mem_alloc_failure;
3127                 }
3128
3129                 /* Create PBL */
3130                 num_pages = qedf->global_queues[i]->cq_mem_size /
3131                     QEDF_PAGE_SIZE;
3132                 page = qedf->global_queues[i]->cq_dma;
3133                 pbl = (u32 *)qedf->global_queues[i]->cq_pbl;
3134
3135                 while (num_pages--) {
3136                         *pbl = U64_LO(page);
3137                         pbl++;
3138                         *pbl = U64_HI(page);
3139                         pbl++;
3140                         page += QEDF_PAGE_SIZE;
3141                 }
3142                 /* Set the initial consumer index for cq */
3143                 qedf->global_queues[i]->cq_cons_idx = 0;
3144         }
3145
3146         list = (u32 *)qedf->p_cpuq;
3147
3148         /*
3149          * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
3150          * CQ#1 PBL pointer, RQ#1 PBL pointer, etc.  Each PBL pointer points
3151          * to the physical address which contains an array of pointers to
3152          * the physical addresses of the specific queue pages.
3153          */
3154         for (i = 0; i < qedf->num_queues; i++) {
3155                 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma);
3156                 list++;
3157                 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma);
3158                 list++;
3159                 *list = U64_LO(0);
3160                 list++;
3161                 *list = U64_HI(0);
3162                 list++;
3163         }
3164
3165         return 0;
3166
3167 mem_alloc_failure:
3168         qedf_free_global_queues(qedf);
3169         return status;
3170 }
3171
3172 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf)
3173 {
3174         u8 sq_num_pbl_pages;
3175         u32 sq_mem_size;
3176         u32 cq_mem_size;
3177         u32 cq_num_entries;
3178         int rval;
3179
3180         /*
3181          * The number of completion queues/fastpath interrupts/status blocks
3182          * we allocation is the minimum off:
3183          *
3184          * Number of CPUs
3185          * Number allocated by qed for our PCI function
3186          */
3187         qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf);
3188
3189         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n",
3190                    qedf->num_queues);
3191
3192         qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev,
3193             qedf->num_queues * sizeof(struct qedf_glbl_q_params),
3194             &qedf->hw_p_cpuq, GFP_KERNEL);
3195
3196         if (!qedf->p_cpuq) {
3197                 QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n");
3198                 return 1;
3199         }
3200
3201         rval = qedf_alloc_global_queues(qedf);
3202         if (rval) {
3203                 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation "
3204                           "failed.\n");
3205                 return 1;
3206         }
3207
3208         /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */
3209         sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
3210         sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE);
3211         sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE);
3212
3213         /* Calculate CQ num entries */
3214         cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
3215         cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE);
3216         cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe);
3217
3218         memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params));
3219
3220         /* Setup the value for fcoe PF */
3221         qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS;
3222         qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS;
3223         qedf->pf_params.fcoe_pf_params.glbl_q_params_addr =
3224             (u64)qedf->hw_p_cpuq;
3225         qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages;
3226
3227         qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0;
3228
3229         qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries;
3230         qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues;
3231
3232         /* log_page_size: 12 for 4KB pages */
3233         qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE);
3234
3235         qedf->pf_params.fcoe_pf_params.mtu = 9000;
3236         qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI;
3237         qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI;
3238
3239         /* BDQ address and size */
3240         qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] =
3241             qedf->bdq_pbl_list_dma;
3242         qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] =
3243             qedf->bdq_pbl_list_num_entries;
3244         qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE;
3245
3246         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3247             "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n",
3248             qedf->bdq_pbl_list,
3249             qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0],
3250             qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]);
3251
3252         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3253             "cq_num_entries=%d.\n",
3254             qedf->pf_params.fcoe_pf_params.cq_num_entries);
3255
3256         return 0;
3257 }
3258
3259 /* Free DMA coherent memory for array of queue pointers we pass to qed */
3260 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf)
3261 {
3262         size_t size = 0;
3263
3264         if (qedf->p_cpuq) {
3265                 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params);
3266                 dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq,
3267                     qedf->hw_p_cpuq);
3268         }
3269
3270         qedf_free_global_queues(qedf);
3271
3272         kfree(qedf->global_queues);
3273 }
3274
3275 /*
3276  * PCI driver functions
3277  */
3278
3279 static const struct pci_device_id qedf_pci_tbl[] = {
3280         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) },
3281         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) },
3282         {0}
3283 };
3284 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl);
3285
3286 static struct pci_driver qedf_pci_driver = {
3287         .name = QEDF_MODULE_NAME,
3288         .id_table = qedf_pci_tbl,
3289         .probe = qedf_probe,
3290         .remove = qedf_remove,
3291         .shutdown = qedf_shutdown,
3292         .suspend = qedf_suspend,
3293 };
3294
3295 static int __qedf_probe(struct pci_dev *pdev, int mode)
3296 {
3297         int rc = -EINVAL;
3298         struct fc_lport *lport;
3299         struct qedf_ctx *qedf = NULL;
3300         struct Scsi_Host *host;
3301         bool is_vf = false;
3302         struct qed_ll2_params params;
3303         char host_buf[20];
3304         struct qed_link_params link_params;
3305         int status;
3306         void *task_start, *task_end;
3307         struct qed_slowpath_params slowpath_params;
3308         struct qed_probe_params qed_params;
3309         u16 retry_cnt = 10;
3310
3311         /*
3312          * When doing error recovery we didn't reap the lport so don't try
3313          * to reallocate it.
3314          */
3315 retry_probe:
3316         if (mode == QEDF_MODE_RECOVERY)
3317                 msleep(2000);
3318
3319         if (mode != QEDF_MODE_RECOVERY) {
3320                 lport = libfc_host_alloc(&qedf_host_template,
3321                     sizeof(struct qedf_ctx));
3322
3323                 if (!lport) {
3324                         QEDF_ERR(NULL, "Could not allocate lport.\n");
3325                         rc = -ENOMEM;
3326                         goto err0;
3327                 }
3328
3329                 fc_disc_init(lport);
3330
3331                 /* Initialize qedf_ctx */
3332                 qedf = lport_priv(lport);
3333                 set_bit(QEDF_PROBING, &qedf->flags);
3334                 qedf->lport = lport;
3335                 qedf->ctlr.lp = lport;
3336                 qedf->pdev = pdev;
3337                 qedf->dbg_ctx.pdev = pdev;
3338                 qedf->dbg_ctx.host_no = lport->host->host_no;
3339                 spin_lock_init(&qedf->hba_lock);
3340                 INIT_LIST_HEAD(&qedf->fcports);
3341                 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1;
3342                 atomic_set(&qedf->num_offloads, 0);
3343                 qedf->stop_io_on_error = false;
3344                 pci_set_drvdata(pdev, qedf);
3345                 init_completion(&qedf->fipvlan_compl);
3346                 mutex_init(&qedf->stats_mutex);
3347                 mutex_init(&qedf->flush_mutex);
3348                 qedf->flogi_pending = 0;
3349
3350                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO,
3351                    "QLogic FastLinQ FCoE Module qedf %s, "
3352                    "FW %d.%d.%d.%d\n", QEDF_VERSION,
3353                    FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
3354                    FW_ENGINEERING_VERSION);
3355         } else {
3356                 /* Init pointers during recovery */
3357                 qedf = pci_get_drvdata(pdev);
3358                 set_bit(QEDF_PROBING, &qedf->flags);
3359                 lport = qedf->lport;
3360         }
3361
3362         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe started.\n");
3363
3364         host = lport->host;
3365
3366         /* Allocate mempool for qedf_io_work structs */
3367         qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN,
3368             qedf_io_work_cache);
3369         if (qedf->io_mempool == NULL) {
3370                 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n");
3371                 goto err1;
3372         }
3373         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n",
3374             qedf->io_mempool);
3375
3376         qedf->link_update_wq = alloc_workqueue("qedf_%u_link", WQ_MEM_RECLAIM,
3377                                                1, qedf->lport->host->host_no);
3378         INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update);
3379         INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery);
3380         INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump);
3381         INIT_DELAYED_WORK(&qedf->stag_work, qedf_stag_change_work);
3382         qedf->fipvlan_retries = qedf_fipvlan_retries;
3383         /* Set a default prio in case DCBX doesn't converge */
3384         if (qedf_default_prio > -1) {
3385                 /*
3386                  * This is the case where we pass a modparam in so we want to
3387                  * honor it even if dcbx doesn't converge.
3388                  */
3389                 qedf->prio = qedf_default_prio;
3390         } else
3391                 qedf->prio = QEDF_DEFAULT_PRIO;
3392
3393         /*
3394          * Common probe. Takes care of basic hardware init and pci_*
3395          * functions.
3396          */
3397         memset(&qed_params, 0, sizeof(qed_params));
3398         qed_params.protocol = QED_PROTOCOL_FCOE;
3399         qed_params.dp_module = qedf_dp_module;
3400         qed_params.dp_level = qedf_dp_level;
3401         qed_params.is_vf = is_vf;
3402         qedf->cdev = qed_ops->common->probe(pdev, &qed_params);
3403         if (!qedf->cdev) {
3404                 if ((mode == QEDF_MODE_RECOVERY) && retry_cnt) {
3405                         QEDF_ERR(&qedf->dbg_ctx,
3406                                 "Retry %d initialize hardware\n", retry_cnt);
3407                         retry_cnt--;
3408                         goto retry_probe;
3409                 }
3410                 QEDF_ERR(&qedf->dbg_ctx, "common probe failed.\n");
3411                 rc = -ENODEV;
3412                 goto err1;
3413         }
3414
3415         /* Learn information crucial for qedf to progress */
3416         rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
3417         if (rc) {
3418                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n");
3419                 goto err1;
3420         }
3421
3422         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
3423                   "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
3424                   qedf->dev_info.common.num_hwfns,
3425                   qed_ops->common->get_affin_hwfn_idx(qedf->cdev));
3426
3427         /* queue allocation code should come here
3428          * order should be
3429          *      slowpath_start
3430          *      status block allocation
3431          *      interrupt registration (to get min number of queues)
3432          *      set_fcoe_pf_param
3433          *      qed_sp_fcoe_func_start
3434          */
3435         rc = qedf_set_fcoe_pf_param(qedf);
3436         if (rc) {
3437                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n");
3438                 goto err2;
3439         }
3440         qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3441
3442         /* Learn information crucial for qedf to progress */
3443         rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
3444         if (rc) {
3445                 QEDF_ERR(&qedf->dbg_ctx, "Failed to fill dev info.\n");
3446                 goto err2;
3447         }
3448
3449         if (mode != QEDF_MODE_RECOVERY) {
3450                 qedf->devlink = qed_ops->common->devlink_register(qedf->cdev);
3451                 if (IS_ERR(qedf->devlink)) {
3452                         QEDF_ERR(&qedf->dbg_ctx, "Cannot register devlink\n");
3453                         rc = PTR_ERR(qedf->devlink);
3454                         qedf->devlink = NULL;
3455                         goto err2;
3456                 }
3457         }
3458
3459         /* Record BDQ producer doorbell addresses */
3460         qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr;
3461         qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr;
3462         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3463             "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod,
3464             qedf->bdq_secondary_prod);
3465
3466         qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf);
3467
3468         rc = qedf_prepare_sb(qedf);
3469         if (rc) {
3470
3471                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3472                 goto err2;
3473         }
3474
3475         /* Start the Slowpath-process */
3476         memset(&slowpath_params, 0, sizeof(struct qed_slowpath_params));
3477         slowpath_params.int_mode = QED_INT_MODE_MSIX;
3478         slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER;
3479         slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER;
3480         slowpath_params.drv_rev = QEDF_DRIVER_REV_VER;
3481         slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER;
3482         strscpy(slowpath_params.name, "qedf", sizeof(slowpath_params.name));
3483         rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params);
3484         if (rc) {
3485                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3486                 goto err2;
3487         }
3488
3489         /*
3490          * update_pf_params needs to be called before and after slowpath
3491          * start
3492          */
3493         qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3494
3495         /* Setup interrupts */
3496         rc = qedf_setup_int(qedf);
3497         if (rc) {
3498                 QEDF_ERR(&qedf->dbg_ctx, "Setup interrupts failed.\n");
3499                 goto err3;
3500         }
3501
3502         rc = qed_ops->start(qedf->cdev, &qedf->tasks);
3503         if (rc) {
3504                 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n");
3505                 goto err4;
3506         }
3507         task_start = qedf_get_task_mem(&qedf->tasks, 0);
3508         task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1);
3509         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, "
3510                    "end=%p block_size=%u.\n", task_start, task_end,
3511                    qedf->tasks.size);
3512
3513         /*
3514          * We need to write the number of BDs in the BDQ we've preallocated so
3515          * the f/w will do a prefetch and we'll get an unsolicited CQE when a
3516          * packet arrives.
3517          */
3518         qedf->bdq_prod_idx = QEDF_BDQ_SIZE;
3519         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3520             "Writing %d to primary and secondary BDQ doorbell registers.\n",
3521             qedf->bdq_prod_idx);
3522         writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod);
3523         readw(qedf->bdq_primary_prod);
3524         writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod);
3525         readw(qedf->bdq_secondary_prod);
3526
3527         qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3528
3529         /* Now that the dev_info struct has been filled in set the MAC
3530          * address
3531          */
3532         ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac);
3533         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n",
3534                    qedf->mac);
3535
3536         /*
3537          * Set the WWNN and WWPN in the following way:
3538          *
3539          * If the info we get from qed is non-zero then use that to set the
3540          * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based
3541          * on the MAC address.
3542          */
3543         if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) {
3544                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3545                     "Setting WWPN and WWNN from qed dev_info.\n");
3546                 qedf->wwnn = qedf->dev_info.wwnn;
3547                 qedf->wwpn = qedf->dev_info.wwpn;
3548         } else {
3549                 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3550                     "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n");
3551                 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0);
3552                 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0);
3553         }
3554         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,  "WWNN=%016llx "
3555                    "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn);
3556
3557         sprintf(host_buf, "host_%d", host->host_no);
3558         qed_ops->common->set_name(qedf->cdev, host_buf);
3559
3560         /* Allocate cmd mgr */
3561         qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf);
3562         if (!qedf->cmd_mgr) {
3563                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n");
3564                 rc = -ENOMEM;
3565                 goto err5;
3566         }
3567
3568         if (mode != QEDF_MODE_RECOVERY) {
3569                 host->transportt = qedf_fc_transport_template;
3570                 host->max_lun = qedf_max_lun;
3571                 host->max_cmd_len = QEDF_MAX_CDB_LEN;
3572                 host->max_id = QEDF_MAX_SESSIONS;
3573                 host->can_queue = FCOE_PARAMS_NUM_TASKS;
3574                 rc = scsi_add_host(host, &pdev->dev);
3575                 if (rc) {
3576                         QEDF_WARN(&qedf->dbg_ctx,
3577                                   "Error adding Scsi_Host rc=0x%x.\n", rc);
3578                         goto err6;
3579                 }
3580         }
3581
3582         memset(&params, 0, sizeof(params));
3583         params.mtu = QEDF_LL2_BUF_SIZE;
3584         ether_addr_copy(params.ll2_mac_address, qedf->mac);
3585
3586         /* Start LL2 processing thread */
3587         qedf->ll2_recv_wq = alloc_workqueue("qedf_%d_ll2", WQ_MEM_RECLAIM, 1,
3588                                             host->host_no);
3589         if (!qedf->ll2_recv_wq) {
3590                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n");
3591                 rc = -ENOMEM;
3592                 goto err7;
3593         }
3594
3595 #ifdef CONFIG_DEBUG_FS
3596         qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops,
3597                             qedf_dbg_fops);
3598 #endif
3599
3600         /* Start LL2 */
3601         qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf);
3602         rc = qed_ops->ll2->start(qedf->cdev, &params);
3603         if (rc) {
3604                 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n");
3605                 goto err7;
3606         }
3607         set_bit(QEDF_LL2_STARTED, &qedf->flags);
3608
3609         /* Set initial FIP/FCoE VLAN to NULL */
3610         qedf->vlan_id = 0;
3611
3612         /*
3613          * No need to setup fcoe_ctlr or fc_lport objects during recovery since
3614          * they were not reaped during the unload process.
3615          */
3616         if (mode != QEDF_MODE_RECOVERY) {
3617                 /* Setup imbedded fcoe controller */
3618                 qedf_fcoe_ctlr_setup(qedf);
3619
3620                 /* Setup lport */
3621                 rc = qedf_lport_setup(qedf);
3622                 if (rc) {
3623                         QEDF_ERR(&(qedf->dbg_ctx),
3624                             "qedf_lport_setup failed.\n");
3625                         goto err7;
3626                 }
3627         }
3628
3629         qedf->timer_work_queue = alloc_workqueue("qedf_%u_timer",
3630                                 WQ_MEM_RECLAIM, 1, qedf->lport->host->host_no);
3631         if (!qedf->timer_work_queue) {
3632                 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer "
3633                           "workqueue.\n");
3634                 rc = -ENOMEM;
3635                 goto err7;
3636         }
3637
3638         /* DPC workqueue is not reaped during recovery unload */
3639         if (mode != QEDF_MODE_RECOVERY) {
3640                 sprintf(host_buf, "qedf_%u_dpc",
3641                     qedf->lport->host->host_no);
3642                 qedf->dpc_wq =
3643                         alloc_workqueue("%s", WQ_MEM_RECLAIM, 1, host_buf);
3644         }
3645         INIT_DELAYED_WORK(&qedf->recovery_work, qedf_recovery_handler);
3646
3647         /*
3648          * GRC dump and sysfs parameters are not reaped during the recovery
3649          * unload process.
3650          */
3651         if (mode != QEDF_MODE_RECOVERY) {
3652                 qedf->grcdump_size =
3653                     qed_ops->common->dbg_all_data_size(qedf->cdev);
3654                 if (qedf->grcdump_size) {
3655                         rc = qedf_alloc_grc_dump_buf(&qedf->grcdump,
3656                             qedf->grcdump_size);
3657                         if (rc) {
3658                                 QEDF_ERR(&(qedf->dbg_ctx),
3659                                     "GRC Dump buffer alloc failed.\n");
3660                                 qedf->grcdump = NULL;
3661                         }
3662
3663                         QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3664                             "grcdump: addr=%p, size=%u.\n",
3665                             qedf->grcdump, qedf->grcdump_size);
3666                 }
3667                 qedf_create_sysfs_ctx_attr(qedf);
3668
3669                 /* Initialize I/O tracing for this adapter */
3670                 spin_lock_init(&qedf->io_trace_lock);
3671                 qedf->io_trace_idx = 0;
3672         }
3673
3674         init_completion(&qedf->flogi_compl);
3675
3676         status = qed_ops->common->update_drv_state(qedf->cdev, true);
3677         if (status)
3678                 QEDF_ERR(&(qedf->dbg_ctx),
3679                         "Failed to send drv state to MFW.\n");
3680
3681         memset(&link_params, 0, sizeof(struct qed_link_params));
3682         link_params.link_up = true;
3683         status = qed_ops->common->set_link(qedf->cdev, &link_params);
3684         if (status)
3685                 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n");
3686
3687         /* Start/restart discovery */
3688         if (mode == QEDF_MODE_RECOVERY)
3689                 fcoe_ctlr_link_up(&qedf->ctlr);
3690         else
3691                 fc_fabric_login(lport);
3692
3693         QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe done.\n");
3694
3695         clear_bit(QEDF_PROBING, &qedf->flags);
3696
3697         /* All good */
3698         return 0;
3699
3700 err7:
3701         if (qedf->ll2_recv_wq)
3702                 destroy_workqueue(qedf->ll2_recv_wq);
3703         fc_remove_host(qedf->lport->host);
3704         scsi_remove_host(qedf->lport->host);
3705 #ifdef CONFIG_DEBUG_FS
3706         qedf_dbg_host_exit(&(qedf->dbg_ctx));
3707 #endif
3708 err6:
3709         qedf_cmd_mgr_free(qedf->cmd_mgr);
3710 err5:
3711         qed_ops->stop(qedf->cdev);
3712 err4:
3713         qedf_free_fcoe_pf_param(qedf);
3714         qedf_sync_free_irqs(qedf);
3715 err3:
3716         qed_ops->common->slowpath_stop(qedf->cdev);
3717 err2:
3718         qed_ops->common->remove(qedf->cdev);
3719 err1:
3720         scsi_host_put(lport->host);
3721 err0:
3722         return rc;
3723 }
3724
3725 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
3726 {
3727         return __qedf_probe(pdev, QEDF_MODE_NORMAL);
3728 }
3729
3730 static void __qedf_remove(struct pci_dev *pdev, int mode)
3731 {
3732         struct qedf_ctx *qedf;
3733         int rc;
3734         int cnt = 0;
3735
3736         if (!pdev) {
3737                 QEDF_ERR(NULL, "pdev is NULL.\n");
3738                 return;
3739         }
3740
3741         qedf = pci_get_drvdata(pdev);
3742
3743         /*
3744          * Prevent race where we're in board disable work and then try to
3745          * rmmod the module.
3746          */
3747         if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
3748                 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n");
3749                 return;
3750         }
3751
3752 stag_in_prog:
3753         if (test_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags)) {
3754                 QEDF_ERR(&qedf->dbg_ctx, "Stag in progress, cnt=%d.\n", cnt);
3755                 cnt++;
3756
3757                 if (cnt < 5) {
3758                         msleep(500);
3759                         goto stag_in_prog;
3760                 }
3761         }
3762
3763         if (mode != QEDF_MODE_RECOVERY)
3764                 set_bit(QEDF_UNLOADING, &qedf->flags);
3765
3766         /* Logoff the fabric to upload all connections */
3767         if (mode == QEDF_MODE_RECOVERY)
3768                 fcoe_ctlr_link_down(&qedf->ctlr);
3769         else
3770                 fc_fabric_logoff(qedf->lport);
3771
3772         if (!qedf_wait_for_upload(qedf))
3773                 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n");
3774
3775 #ifdef CONFIG_DEBUG_FS
3776         qedf_dbg_host_exit(&(qedf->dbg_ctx));
3777 #endif
3778
3779         /* Stop any link update handling */
3780         cancel_delayed_work_sync(&qedf->link_update);
3781         destroy_workqueue(qedf->link_update_wq);
3782         qedf->link_update_wq = NULL;
3783
3784         if (qedf->timer_work_queue)
3785                 destroy_workqueue(qedf->timer_work_queue);
3786
3787         /* Stop Light L2 */
3788         clear_bit(QEDF_LL2_STARTED, &qedf->flags);
3789         qed_ops->ll2->stop(qedf->cdev);
3790         if (qedf->ll2_recv_wq)
3791                 destroy_workqueue(qedf->ll2_recv_wq);
3792
3793         /* Stop fastpath */
3794         qedf_sync_free_irqs(qedf);
3795         qedf_destroy_sb(qedf);
3796
3797         /*
3798          * During recovery don't destroy OS constructs that represent the
3799          * physical port.
3800          */
3801         if (mode != QEDF_MODE_RECOVERY) {
3802                 qedf_free_grc_dump_buf(&qedf->grcdump);
3803                 qedf_remove_sysfs_ctx_attr(qedf);
3804
3805                 /* Remove all SCSI/libfc/libfcoe structures */
3806                 fcoe_ctlr_destroy(&qedf->ctlr);
3807                 fc_lport_destroy(qedf->lport);
3808                 fc_remove_host(qedf->lport->host);
3809                 scsi_remove_host(qedf->lport->host);
3810         }
3811
3812         qedf_cmd_mgr_free(qedf->cmd_mgr);
3813
3814         if (mode != QEDF_MODE_RECOVERY) {
3815                 fc_exch_mgr_free(qedf->lport);
3816                 fc_lport_free_stats(qedf->lport);
3817
3818                 /* Wait for all vports to be reaped */
3819                 qedf_wait_for_vport_destroy(qedf);
3820         }
3821
3822         /*
3823          * Now that all connections have been uploaded we can stop the
3824          * rest of the qed operations
3825          */
3826         qed_ops->stop(qedf->cdev);
3827
3828         if (mode != QEDF_MODE_RECOVERY) {
3829                 if (qedf->dpc_wq) {
3830                         /* Stop general DPC handling */
3831                         destroy_workqueue(qedf->dpc_wq);
3832                         qedf->dpc_wq = NULL;
3833                 }
3834         }
3835
3836         /* Final shutdown for the board */
3837         qedf_free_fcoe_pf_param(qedf);
3838         if (mode != QEDF_MODE_RECOVERY) {
3839                 qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3840                 pci_set_drvdata(pdev, NULL);
3841         }
3842
3843         rc = qed_ops->common->update_drv_state(qedf->cdev, false);
3844         if (rc)
3845                 QEDF_ERR(&(qedf->dbg_ctx),
3846                         "Failed to send drv state to MFW.\n");
3847
3848         if (mode != QEDF_MODE_RECOVERY && qedf->devlink) {
3849                 qed_ops->common->devlink_unregister(qedf->devlink);
3850                 qedf->devlink = NULL;
3851         }
3852
3853         qed_ops->common->slowpath_stop(qedf->cdev);
3854         qed_ops->common->remove(qedf->cdev);
3855
3856         mempool_destroy(qedf->io_mempool);
3857
3858         /* Only reap the Scsi_host on a real removal */
3859         if (mode != QEDF_MODE_RECOVERY)
3860                 scsi_host_put(qedf->lport->host);
3861 }
3862
3863 static void qedf_remove(struct pci_dev *pdev)
3864 {
3865         /* Check to make sure this function wasn't already disabled */
3866         if (!atomic_read(&pdev->enable_cnt))
3867                 return;
3868
3869         __qedf_remove(pdev, QEDF_MODE_NORMAL);
3870 }
3871
3872 void qedf_wq_grcdump(struct work_struct *work)
3873 {
3874         struct qedf_ctx *qedf =
3875             container_of(work, struct qedf_ctx, grcdump_work.work);
3876
3877         QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n");
3878         qedf_capture_grc_dump(qedf);
3879 }
3880
3881 void qedf_schedule_hw_err_handler(void *dev, enum qed_hw_err_type err_type)
3882 {
3883         struct qedf_ctx *qedf = dev;
3884
3885         QEDF_ERR(&(qedf->dbg_ctx),
3886                         "Hardware error handler scheduled, event=%d.\n",
3887                         err_type);
3888
3889         if (test_bit(QEDF_IN_RECOVERY, &qedf->flags)) {
3890                 QEDF_ERR(&(qedf->dbg_ctx),
3891                                 "Already in recovery, not scheduling board disable work.\n");
3892                 return;
3893         }
3894
3895         switch (err_type) {
3896         case QED_HW_ERR_FAN_FAIL:
3897                 schedule_delayed_work(&qedf->board_disable_work, 0);
3898                 break;
3899         case QED_HW_ERR_MFW_RESP_FAIL:
3900         case QED_HW_ERR_HW_ATTN:
3901         case QED_HW_ERR_DMAE_FAIL:
3902         case QED_HW_ERR_FW_ASSERT:
3903                 /* Prevent HW attentions from being reasserted */
3904                 qed_ops->common->attn_clr_enable(qedf->cdev, true);
3905                 break;
3906         case QED_HW_ERR_RAMROD_FAIL:
3907                 /* Prevent HW attentions from being reasserted */
3908                 qed_ops->common->attn_clr_enable(qedf->cdev, true);
3909
3910                 if (qedf_enable_recovery && qedf->devlink)
3911                         qed_ops->common->report_fatal_error(qedf->devlink,
3912                                 err_type);
3913
3914                 break;
3915         default:
3916                 break;
3917         }
3918 }
3919
3920 /*
3921  * Protocol TLV handler
3922  */
3923 void qedf_get_protocol_tlv_data(void *dev, void *data)
3924 {
3925         struct qedf_ctx *qedf = dev;
3926         struct qed_mfw_tlv_fcoe *fcoe = data;
3927         struct fc_lport *lport;
3928         struct Scsi_Host *host;
3929         struct fc_host_attrs *fc_host;
3930         struct fc_host_statistics *hst;
3931
3932         if (!qedf) {
3933                 QEDF_ERR(NULL, "qedf is null.\n");
3934                 return;
3935         }
3936
3937         if (test_bit(QEDF_PROBING, &qedf->flags)) {
3938                 QEDF_ERR(&qedf->dbg_ctx, "Function is still probing.\n");
3939                 return;
3940         }
3941
3942         lport = qedf->lport;
3943         host = lport->host;
3944         fc_host = shost_to_fc_host(host);
3945
3946         /* Force a refresh of the fc_host stats including offload stats */
3947         hst = qedf_fc_get_host_stats(host);
3948
3949         fcoe->qos_pri_set = true;
3950         fcoe->qos_pri = 3; /* Hard coded to 3 in driver */
3951
3952         fcoe->ra_tov_set = true;
3953         fcoe->ra_tov = lport->r_a_tov;
3954
3955         fcoe->ed_tov_set = true;
3956         fcoe->ed_tov = lport->e_d_tov;
3957
3958         fcoe->npiv_state_set = true;
3959         fcoe->npiv_state = 1; /* NPIV always enabled */
3960
3961         fcoe->num_npiv_ids_set = true;
3962         fcoe->num_npiv_ids = fc_host->npiv_vports_inuse;
3963
3964         /* Certain attributes we only want to set if we've selected an FCF */
3965         if (qedf->ctlr.sel_fcf) {
3966                 fcoe->switch_name_set = true;
3967                 u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name);
3968         }
3969
3970         fcoe->port_state_set = true;
3971         /* For qedf we're either link down or fabric attach */
3972         if (lport->link_up)
3973                 fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC;
3974         else
3975                 fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE;
3976
3977         fcoe->link_failures_set = true;
3978         fcoe->link_failures = (u16)hst->link_failure_count;
3979
3980         fcoe->fcoe_txq_depth_set = true;
3981         fcoe->fcoe_rxq_depth_set = true;
3982         fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS;
3983         fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS;
3984
3985         fcoe->fcoe_rx_frames_set = true;
3986         fcoe->fcoe_rx_frames = hst->rx_frames;
3987
3988         fcoe->fcoe_tx_frames_set = true;
3989         fcoe->fcoe_tx_frames = hst->tx_frames;
3990
3991         fcoe->fcoe_rx_bytes_set = true;
3992         fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000;
3993
3994         fcoe->fcoe_tx_bytes_set = true;
3995         fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000;
3996
3997         fcoe->crc_count_set = true;
3998         fcoe->crc_count = hst->invalid_crc_count;
3999
4000         fcoe->tx_abts_set = true;
4001         fcoe->tx_abts = hst->fcp_packet_aborts;
4002
4003         fcoe->tx_lun_rst_set = true;
4004         fcoe->tx_lun_rst = qedf->lun_resets;
4005
4006         fcoe->abort_task_sets_set = true;
4007         fcoe->abort_task_sets = qedf->packet_aborts;
4008
4009         fcoe->scsi_busy_set = true;
4010         fcoe->scsi_busy = qedf->busy;
4011
4012         fcoe->scsi_tsk_full_set = true;
4013         fcoe->scsi_tsk_full = qedf->task_set_fulls;
4014 }
4015
4016 /* Deferred work function to perform soft context reset on STAG change */
4017 void qedf_stag_change_work(struct work_struct *work)
4018 {
4019         struct qedf_ctx *qedf =
4020             container_of(work, struct qedf_ctx, stag_work.work);
4021
4022         if (test_bit(QEDF_IN_RECOVERY, &qedf->flags)) {
4023                 QEDF_ERR(&qedf->dbg_ctx,
4024                          "Already is in recovery, hence not calling software context reset.\n");
4025                 return;
4026         }
4027
4028         if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
4029                 QEDF_ERR(&qedf->dbg_ctx, "Driver unloading\n");
4030                 return;
4031         }
4032
4033         set_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags);
4034
4035         printk_ratelimited("[%s]:[%s:%d]:%d: Performing software context reset.",
4036                         dev_name(&qedf->pdev->dev), __func__, __LINE__,
4037                         qedf->dbg_ctx.host_no);
4038         qedf_ctx_soft_reset(qedf->lport);
4039 }
4040
4041 static void qedf_shutdown(struct pci_dev *pdev)
4042 {
4043         __qedf_remove(pdev, QEDF_MODE_NORMAL);
4044 }
4045
4046 static int qedf_suspend(struct pci_dev *pdev, pm_message_t state)
4047 {
4048         struct qedf_ctx *qedf;
4049
4050         if (!pdev) {
4051                 QEDF_ERR(NULL, "pdev is NULL.\n");
4052                 return -ENODEV;
4053         }
4054
4055         qedf = pci_get_drvdata(pdev);
4056
4057         QEDF_ERR(&qedf->dbg_ctx, "%s: Device does not support suspend operation\n", __func__);
4058
4059         return -EPERM;
4060 }
4061
4062 /*
4063  * Recovery handler code
4064  */
4065 static void qedf_schedule_recovery_handler(void *dev)
4066 {
4067         struct qedf_ctx *qedf = dev;
4068
4069         QEDF_ERR(&qedf->dbg_ctx, "Recovery handler scheduled.\n");
4070         schedule_delayed_work(&qedf->recovery_work, 0);
4071 }
4072
4073 static void qedf_recovery_handler(struct work_struct *work)
4074 {
4075         struct qedf_ctx *qedf =
4076             container_of(work, struct qedf_ctx, recovery_work.work);
4077
4078         if (test_and_set_bit(QEDF_IN_RECOVERY, &qedf->flags))
4079                 return;
4080
4081         /*
4082          * Call common_ops->recovery_prolog to allow the MFW to quiesce
4083          * any PCI transactions.
4084          */
4085         qed_ops->common->recovery_prolog(qedf->cdev);
4086
4087         QEDF_ERR(&qedf->dbg_ctx, "Recovery work start.\n");
4088         __qedf_remove(qedf->pdev, QEDF_MODE_RECOVERY);
4089         /*
4090          * Reset link and dcbx to down state since we will not get a link down
4091          * event from the MFW but calling __qedf_remove will essentially be a
4092          * link down event.
4093          */
4094         atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
4095         atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
4096         __qedf_probe(qedf->pdev, QEDF_MODE_RECOVERY);
4097         clear_bit(QEDF_IN_RECOVERY, &qedf->flags);
4098         QEDF_ERR(&qedf->dbg_ctx, "Recovery work complete.\n");
4099 }
4100
4101 /* Generic TLV data callback */
4102 void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
4103 {
4104         struct qedf_ctx *qedf;
4105
4106         if (!dev) {
4107                 QEDF_INFO(NULL, QEDF_LOG_EVT,
4108                           "dev is NULL so ignoring get_generic_tlv_data request.\n");
4109                 return;
4110         }
4111         qedf = (struct qedf_ctx *)dev;
4112
4113         memset(data, 0, sizeof(struct qed_generic_tlvs));
4114         ether_addr_copy(data->mac[0], qedf->mac);
4115 }
4116
4117 /*
4118  * Module Init/Remove
4119  */
4120
4121 static int __init qedf_init(void)
4122 {
4123         int ret;
4124
4125         /* If debug=1 passed, set the default log mask */
4126         if (qedf_debug == QEDF_LOG_DEFAULT)
4127                 qedf_debug = QEDF_DEFAULT_LOG_MASK;
4128
4129         /*
4130          * Check that default prio for FIP/FCoE traffic is between 0..7 if a
4131          * value has been set
4132          */
4133         if (qedf_default_prio > -1)
4134                 if (qedf_default_prio > 7) {
4135                         qedf_default_prio = QEDF_DEFAULT_PRIO;
4136                         QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n",
4137                             QEDF_DEFAULT_PRIO);
4138                 }
4139
4140         /* Print driver banner */
4141         QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR,
4142                    QEDF_VERSION);
4143
4144         /* Create kmem_cache for qedf_io_work structs */
4145         qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache",
4146             sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL);
4147         if (qedf_io_work_cache == NULL) {
4148                 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n");
4149                 goto err1;
4150         }
4151         QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n",
4152             qedf_io_work_cache);
4153
4154         qed_ops = qed_get_fcoe_ops();
4155         if (!qed_ops) {
4156                 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n");
4157                 goto err1;
4158         }
4159
4160 #ifdef CONFIG_DEBUG_FS
4161         qedf_dbg_init("qedf");
4162 #endif
4163
4164         qedf_fc_transport_template =
4165             fc_attach_transport(&qedf_fc_transport_fn);
4166         if (!qedf_fc_transport_template) {
4167                 QEDF_ERR(NULL, "Could not register with FC transport\n");
4168                 goto err2;
4169         }
4170
4171         qedf_fc_vport_transport_template =
4172                 fc_attach_transport(&qedf_fc_vport_transport_fn);
4173         if (!qedf_fc_vport_transport_template) {
4174                 QEDF_ERR(NULL, "Could not register vport template with FC "
4175                           "transport\n");
4176                 goto err3;
4177         }
4178
4179         qedf_io_wq = alloc_workqueue("%s", WQ_MEM_RECLAIM, 1, "qedf_io_wq");
4180         if (!qedf_io_wq) {
4181                 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n");
4182                 goto err4;
4183         }
4184
4185         qedf_cb_ops.get_login_failures = qedf_get_login_failures;
4186
4187         ret = pci_register_driver(&qedf_pci_driver);
4188         if (ret) {
4189                 QEDF_ERR(NULL, "Failed to register driver\n");
4190                 goto err5;
4191         }
4192
4193         return 0;
4194
4195 err5:
4196         destroy_workqueue(qedf_io_wq);
4197 err4:
4198         fc_release_transport(qedf_fc_vport_transport_template);
4199 err3:
4200         fc_release_transport(qedf_fc_transport_template);
4201 err2:
4202 #ifdef CONFIG_DEBUG_FS
4203         qedf_dbg_exit();
4204 #endif
4205         qed_put_fcoe_ops();
4206 err1:
4207         return -EINVAL;
4208 }
4209
4210 static void __exit qedf_cleanup(void)
4211 {
4212         pci_unregister_driver(&qedf_pci_driver);
4213
4214         destroy_workqueue(qedf_io_wq);
4215
4216         fc_release_transport(qedf_fc_vport_transport_template);
4217         fc_release_transport(qedf_fc_transport_template);
4218 #ifdef CONFIG_DEBUG_FS
4219         qedf_dbg_exit();
4220 #endif
4221         qed_put_fcoe_ops();
4222
4223         kmem_cache_destroy(qedf_io_work_cache);
4224 }
4225
4226 MODULE_LICENSE("GPL");
4227 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx FCoE Module");
4228 MODULE_AUTHOR("QLogic Corporation");
4229 MODULE_VERSION(QEDF_VERSION);
4230 module_init(qedf_init);
4231 module_exit(qedf_cleanup);