drivers/scsi/lpfc/lpfc_hbadisc.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2004-2009 Emulex.  All rights reserved.           *
   5  * EMULEX and SLI are trademarks of Emulex.                        *
   6  * www.emulex.com                                                  *
   7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
   8  *                                                                 *
   9  * This program is free software; you can redistribute it and/or   *
  10  * modify it under the terms of version 2 of the GNU General       *
  11  * Public License as published by the Free Software Foundation.    *
  12  * This program is distributed in the hope that it will be useful. *
  13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  18  * more details, a copy of which can be found in the file COPYING  *
  19  * included with this package.                                     *
  20  *******************************************************************/
  21
  22 #include <linux/blkdev.h>
  23 #include <linux/pci.h>
  24 #include <linux/kthread.h>
  25 #include <linux/interrupt.h>
  26
  27 #include <scsi/scsi.h>
  28 #include <scsi/scsi_device.h>
  29 #include <scsi/scsi_host.h>
  30 #include <scsi/scsi_transport_fc.h>
  31
  32 #include "lpfc_hw4.h"
  33 #include "lpfc_hw.h"
  34 #include "lpfc_nl.h"
  35 #include "lpfc_disc.h"
  36 #include "lpfc_sli.h"
  37 #include "lpfc_sli4.h"
  38 #include "lpfc_scsi.h"
  39 #include "lpfc.h"
  40 #include "lpfc_logmsg.h"
  41 #include "lpfc_crtn.h"
  42 #include "lpfc_vport.h"
  43 #include "lpfc_debugfs.h"
  44
  45 /* AlpaArray for assignment of scsid for scan-down and bind_method */
  46 static uint8_t lpfcAlpaArray[] = {
  47         0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
  48         0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
  49         0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
  50         0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
  51         0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
  52         0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
  53         0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
  54         0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
  55         0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
  56         0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
  57         0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
  58         0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
  59         0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
  60 };
  61
  62 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
  63 static void lpfc_disc_flush_list(struct lpfc_vport *vport);
  64 static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *);
  65
  66 void
  67 lpfc_terminate_rport_io(struct fc_rport *rport)
  68 {
  69         struct lpfc_rport_data *rdata;
  70         struct lpfc_nodelist * ndlp;
  71         struct lpfc_hba *phba;
  72
  73         rdata = rport->dd_data;
  74         ndlp = rdata->pnode;
  75
  76         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
  77                 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
  78                         printk(KERN_ERR "Cannot find remote node"
  79                         " to terminate I/O Data x%x\n",
  80                         rport->port_id);
  81                 return;
  82         }
  83
  84         phba  = ndlp->phba;
  85
  86         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
  87                 "rport terminate: sid:x%x did:x%x flg:x%x",
  88                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
  89
  90         if (ndlp->nlp_sid != NLP_NO_SID) {
  91                 lpfc_sli_abort_iocb(ndlp->vport,
  92                         &phba->sli.ring[phba->sli.fcp_ring],
  93                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
  94         }
  95 }
  96
  97 /*
  98  * This function will be called when dev_loss_tmo fire.
  99  */
 100 void
 101 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
 102 {
 103         struct lpfc_rport_data *rdata;
 104         struct lpfc_nodelist * ndlp;
 105         struct lpfc_vport *vport;
 106         struct lpfc_hba   *phba;
 107         struct lpfc_work_evt *evtp;
 108         int  put_node;
 109         int  put_rport;
 110
 111         rdata = rport->dd_data;
 112         ndlp = rdata->pnode;
 113         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
 114                 return;
 115
 116         vport = ndlp->vport;
 117         phba  = vport->phba;
 118
 119         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 120                 "rport devlosscb: sid:x%x did:x%x flg:x%x",
 121                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 122
 123         /* Don't defer this if we are in the process of deleting the vport
 124          * or unloading the driver. The unload will cleanup the node
 125          * appropriately we just need to cleanup the ndlp rport info here.
 126          */
 127         if (vport->load_flag & FC_UNLOADING) {
 128                 put_node = rdata->pnode != NULL;
 129                 put_rport = ndlp->rport != NULL;
 130                 rdata->pnode = NULL;
 131                 ndlp->rport = NULL;
 132                 if (put_node)
 133                         lpfc_nlp_put(ndlp);
 134                 if (put_rport)
 135                         put_device(&rport->dev);
 136                 return;
 137         }
 138
 139         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
 140                 return;
 141
 142         evtp = &ndlp->dev_loss_evt;
 143
 144         if (!list_empty(&evtp->evt_listp))
 145                 return;
 146
 147         spin_lock_irq(&phba->hbalock);
 148         /* We need to hold the node by incrementing the reference
 149          * count until this queued work is done
 150          */
 151         evtp->evt_arg1  = lpfc_nlp_get(ndlp);
 152         if (evtp->evt_arg1) {
 153                 evtp->evt = LPFC_EVT_DEV_LOSS;
 154                 list_add_tail(&evtp->evt_listp, &phba->work_list);
 155                 lpfc_worker_wake_up(phba);
 156         }
 157         spin_unlock_irq(&phba->hbalock);
 158
 159         return;
 160 }
 161
 162 /*
 163  * This function is called from the worker thread when dev_loss_tmo
 164  * expire.
 165  */
 166 static void
 167 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 168 {
 169         struct lpfc_rport_data *rdata;
 170         struct fc_rport   *rport;
 171         struct lpfc_vport *vport;
 172         struct lpfc_hba   *phba;
 173         uint8_t *name;
 174         int  put_node;
 175         int  put_rport;
 176         int warn_on = 0;
 177
 178         rport = ndlp->rport;
 179
 180         if (!rport)
 181                 return;
 182
 183         rdata = rport->dd_data;
 184         name = (uint8_t *) &ndlp->nlp_portname;
 185         vport = ndlp->vport;
 186         phba  = vport->phba;
 187
 188         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 189                 "rport devlosstmo:did:x%x type:x%x id:x%x",
 190                 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
 191
 192         /* Don't defer this if we are in the process of deleting the vport
 193          * or unloading the driver. The unload will cleanup the node
 194          * appropriately we just need to cleanup the ndlp rport info here.
 195          */
 196         if (vport->load_flag & FC_UNLOADING) {
 197                 if (ndlp->nlp_sid != NLP_NO_SID) {
 198                         /* flush the target */
 199                         lpfc_sli_abort_iocb(vport,
 200                                         &phba->sli.ring[phba->sli.fcp_ring],
 201                                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 202                 }
 203                 put_node = rdata->pnode != NULL;
 204                 put_rport = ndlp->rport != NULL;
 205                 rdata->pnode = NULL;
 206                 ndlp->rport = NULL;
 207                 if (put_node)
 208                         lpfc_nlp_put(ndlp);
 209                 if (put_rport)
 210                         put_device(&rport->dev);
 211                 return;
 212         }
 213
 214         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
 215                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 216                                  "0284 Devloss timeout Ignored on "
 217                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 218                                  "NPort x%x\n",
 219                                  *name, *(name+1), *(name+2), *(name+3),
 220                                  *(name+4), *(name+5), *(name+6), *(name+7),
 221                                  ndlp->nlp_DID);
 222                 return;
 223         }
 224
 225         if (ndlp->nlp_type & NLP_FABRIC) {
 226                 /* We will clean up these Nodes in linkup */
 227                 put_node = rdata->pnode != NULL;
 228                 put_rport = ndlp->rport != NULL;
 229                 rdata->pnode = NULL;
 230                 ndlp->rport = NULL;
 231                 if (put_node)
 232                         lpfc_nlp_put(ndlp);
 233                 if (put_rport)
 234                         put_device(&rport->dev);
 235                 return;
 236         }
 237
 238         if (ndlp->nlp_sid != NLP_NO_SID) {
 239                 warn_on = 1;
 240                 /* flush the target */
 241                 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
 242                                     ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 243         }
 244
 245         if (warn_on) {
 246                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 247                                  "0203 Devloss timeout on "
 248                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 249                                  "NPort x%06x Data: x%x x%x x%x\n",
 250                                  *name, *(name+1), *(name+2), *(name+3),
 251                                  *(name+4), *(name+5), *(name+6), *(name+7),
 252                                  ndlp->nlp_DID, ndlp->nlp_flag,
 253                                  ndlp->nlp_state, ndlp->nlp_rpi);
 254         } else {
 255                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 256                                  "0204 Devloss timeout on "
 257                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 258                                  "NPort x%06x Data: x%x x%x x%x\n",
 259                                  *name, *(name+1), *(name+2), *(name+3),
 260                                  *(name+4), *(name+5), *(name+6), *(name+7),
 261                                  ndlp->nlp_DID, ndlp->nlp_flag,
 262                                  ndlp->nlp_state, ndlp->nlp_rpi);
 263         }
 264
 265         put_node = rdata->pnode != NULL;
 266         put_rport = ndlp->rport != NULL;
 267         rdata->pnode = NULL;
 268         ndlp->rport = NULL;
 269         if (put_node)
 270                 lpfc_nlp_put(ndlp);
 271         if (put_rport)
 272                 put_device(&rport->dev);
 273
 274         if (!(vport->load_flag & FC_UNLOADING) &&
 275             !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
 276             !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
 277             (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE))
 278                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 279
 280         lpfc_unregister_unused_fcf(phba);
 281 }
 282
 283 /**
 284  * lpfc_alloc_fast_evt - Allocates data structure for posting event
 285  * @phba: Pointer to hba context object.
 286  *
 287  * This function is called from the functions which need to post
 288  * events from interrupt context. This function allocates data
 289  * structure required for posting event. It also keeps track of
 290  * number of events pending and prevent event storm when there are
 291  * too many events.
 292  **/
 293 struct lpfc_fast_path_event *
 294 lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
 295         struct lpfc_fast_path_event *ret;
 296
 297         /* If there are lot of fast event do not exhaust memory due to this */
 298         if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
 299                 return NULL;
 300
 301         ret = kzalloc(sizeof(struct lpfc_fast_path_event),
 302                         GFP_ATOMIC);
 303         if (ret) {
 304                 atomic_inc(&phba->fast_event_count);
 305                 INIT_LIST_HEAD(&ret->work_evt.evt_listp);
 306                 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
 307         }
 308         return ret;
 309 }
 310
 311 /**
 312  * lpfc_free_fast_evt - Frees event data structure
 313  * @phba: Pointer to hba context object.
 314  * @evt:  Event object which need to be freed.
 315  *
 316  * This function frees the data structure required for posting
 317  * events.
 318  **/
 319 void
 320 lpfc_free_fast_evt(struct lpfc_hba *phba,
 321                 struct lpfc_fast_path_event *evt) {
 322
 323         atomic_dec(&phba->fast_event_count);
 324         kfree(evt);
 325 }
 326
 327 /**
 328  * lpfc_send_fastpath_evt - Posts events generated from fast path
 329  * @phba: Pointer to hba context object.
 330  * @evtp: Event data structure.
 331  *
 332  * This function is called from worker thread, when the interrupt
 333  * context need to post an event. This function posts the event
 334  * to fc transport netlink interface.
 335  **/
 336 static void
 337 lpfc_send_fastpath_evt(struct lpfc_hba *phba,
 338                 struct lpfc_work_evt *evtp)
 339 {
 340         unsigned long evt_category, evt_sub_category;
 341         struct lpfc_fast_path_event *fast_evt_data;
 342         char *evt_data;
 343         uint32_t evt_data_size;
 344         struct Scsi_Host *shost;
 345
 346         fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
 347                 work_evt);
 348
 349         evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
 350         evt_sub_category = (unsigned long) fast_evt_data->un.
 351                         fabric_evt.subcategory;
 352         shost = lpfc_shost_from_vport(fast_evt_data->vport);
 353         if (evt_category == FC_REG_FABRIC_EVENT) {
 354                 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
 355                         evt_data = (char *) &fast_evt_data->un.read_check_error;
 356                         evt_data_size = sizeof(fast_evt_data->un.
 357                                 read_check_error);
 358                 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
 359                         (evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
 360                         evt_data = (char *) &fast_evt_data->un.fabric_evt;
 361                         evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
 362                 } else {
 363                         lpfc_free_fast_evt(phba, fast_evt_data);
 364                         return;
 365                 }
 366         } else if (evt_category == FC_REG_SCSI_EVENT) {
 367                 switch (evt_sub_category) {
 368                 case LPFC_EVENT_QFULL:
 369                 case LPFC_EVENT_DEVBSY:
 370                         evt_data = (char *) &fast_evt_data->un.scsi_evt;
 371                         evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
 372                         break;
 373                 case LPFC_EVENT_CHECK_COND:
 374                         evt_data = (char *) &fast_evt_data->un.check_cond_evt;
 375                         evt_data_size =  sizeof(fast_evt_data->un.
 376                                 check_cond_evt);
 377                         break;
 378                 case LPFC_EVENT_VARQUEDEPTH:
 379                         evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
 380                         evt_data_size = sizeof(fast_evt_data->un.
 381                                 queue_depth_evt);
 382                         break;
 383                 default:
 384                         lpfc_free_fast_evt(phba, fast_evt_data);
 385                         return;
 386                 }
 387         } else {
 388                 lpfc_free_fast_evt(phba, fast_evt_data);
 389                 return;
 390         }
 391
 392         fc_host_post_vendor_event(shost,
 393                 fc_get_event_number(),
 394                 evt_data_size,
 395                 evt_data,
 396                 LPFC_NL_VENDOR_ID);
 397
 398         lpfc_free_fast_evt(phba, fast_evt_data);
 399         return;
 400 }
 401
 402 static void
 403 lpfc_work_list_done(struct lpfc_hba *phba)
 404 {
 405         struct lpfc_work_evt  *evtp = NULL;
 406         struct lpfc_nodelist  *ndlp;
 407         int free_evt;
 408
 409         spin_lock_irq(&phba->hbalock);
 410         while (!list_empty(&phba->work_list)) {
 411                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
 412                                  evt_listp);
 413                 spin_unlock_irq(&phba->hbalock);
 414                 free_evt = 1;
 415                 switch (evtp->evt) {
 416                 case LPFC_EVT_ELS_RETRY:
 417                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 418                         lpfc_els_retry_delay_handler(ndlp);
 419                         free_evt = 0; /* evt is part of ndlp */
 420                         /* decrement the node reference count held
 421                          * for this queued work
 422                          */
 423                         lpfc_nlp_put(ndlp);
 424                         break;
 425                 case LPFC_EVT_DEV_LOSS:
 426                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 427                         lpfc_dev_loss_tmo_handler(ndlp);
 428                         free_evt = 0;
 429                         /* decrement the node reference count held for
 430                          * this queued work
 431                          */
 432                         lpfc_nlp_put(ndlp);
 433                         break;
 434                 case LPFC_EVT_ONLINE:
 435                         if (phba->link_state < LPFC_LINK_DOWN)
 436                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
 437                         else
 438                                 *(int *) (evtp->evt_arg1) = 0;
 439                         complete((struct completion *)(evtp->evt_arg2));
 440                         break;
 441                 case LPFC_EVT_OFFLINE_PREP:
 442                         if (phba->link_state >= LPFC_LINK_DOWN)
 443                                 lpfc_offline_prep(phba);
 444                         *(int *)(evtp->evt_arg1) = 0;
 445                         complete((struct completion *)(evtp->evt_arg2));
 446                         break;
 447                 case LPFC_EVT_OFFLINE:
 448                         lpfc_offline(phba);
 449                         lpfc_sli_brdrestart(phba);
 450                         *(int *)(evtp->evt_arg1) =
 451                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
 452                         lpfc_unblock_mgmt_io(phba);
 453                         complete((struct completion *)(evtp->evt_arg2));
 454                         break;
 455                 case LPFC_EVT_WARM_START:
 456                         lpfc_offline(phba);
 457                         lpfc_reset_barrier(phba);
 458                         lpfc_sli_brdreset(phba);
 459                         lpfc_hba_down_post(phba);
 460                         *(int *)(evtp->evt_arg1) =
 461                                 lpfc_sli_brdready(phba, HS_MBRDY);
 462                         lpfc_unblock_mgmt_io(phba);
 463                         complete((struct completion *)(evtp->evt_arg2));
 464                         break;
 465                 case LPFC_EVT_KILL:
 466                         lpfc_offline(phba);
 467                         *(int *)(evtp->evt_arg1)
 468                                 = (phba->pport->stopped)
 469                                         ? 0 : lpfc_sli_brdkill(phba);
 470                         lpfc_unblock_mgmt_io(phba);
 471                         complete((struct completion *)(evtp->evt_arg2));
 472                         break;
 473                 case LPFC_EVT_FASTPATH_MGMT_EVT:
 474                         lpfc_send_fastpath_evt(phba, evtp);
 475                         free_evt = 0;
 476                         break;
 477                 }
 478                 if (free_evt)
 479                         kfree(evtp);
 480                 spin_lock_irq(&phba->hbalock);
 481         }
 482         spin_unlock_irq(&phba->hbalock);
 483
 484 }
 485
 486 static void
 487 lpfc_work_done(struct lpfc_hba *phba)
 488 {
 489         struct lpfc_sli_ring *pring;
 490         uint32_t ha_copy, status, control, work_port_events;
 491         struct lpfc_vport **vports;
 492         struct lpfc_vport *vport;
 493         int i;
 494
 495         spin_lock_irq(&phba->hbalock);
 496         ha_copy = phba->work_ha;
 497         phba->work_ha = 0;
 498         spin_unlock_irq(&phba->hbalock);
 499
 500         /* First, try to post the next mailbox command to SLI4 device */
 501         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC)
 502                 lpfc_sli4_post_async_mbox(phba);
 503
 504         if (ha_copy & HA_ERATT)
 505                 /* Handle the error attention event */
 506                 lpfc_handle_eratt(phba);
 507
 508         if (ha_copy & HA_MBATT)
 509                 lpfc_sli_handle_mb_event(phba);
 510
 511         if (ha_copy & HA_LATT)
 512                 lpfc_handle_latt(phba);
 513
 514         /* Process SLI4 events */
 515         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
 516                 if (phba->hba_flag & FCP_XRI_ABORT_EVENT)
 517                         lpfc_sli4_fcp_xri_abort_event_proc(phba);
 518                 if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
 519                         lpfc_sli4_els_xri_abort_event_proc(phba);
 520                 if (phba->hba_flag & ASYNC_EVENT)
 521                         lpfc_sli4_async_event_proc(phba);
 522                 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
 523                         spin_lock_irq(&phba->hbalock);
 524                         phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
 525                         spin_unlock_irq(&phba->hbalock);
 526                         lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
 527                 }
 528         }
 529
 530         vports = lpfc_create_vport_work_array(phba);
 531         if (vports != NULL)
 532                 for (i = 0; i <= phba->max_vports; i++) {
 533                         /*
 534                          * We could have no vports in array if unloading, so if
 535                          * this happens then just use the pport
 536                          */
 537                         if (vports[i] == NULL && i == 0)
 538                                 vport = phba->pport;
 539                         else
 540                                 vport = vports[i];
 541                         if (vport == NULL)
 542                                 break;
 543                         spin_lock_irq(&vport->work_port_lock);
 544                         work_port_events = vport->work_port_events;
 545                         vport->work_port_events &= ~work_port_events;
 546                         spin_unlock_irq(&vport->work_port_lock);
 547                         if (work_port_events & WORKER_DISC_TMO)
 548                                 lpfc_disc_timeout_handler(vport);
 549                         if (work_port_events & WORKER_ELS_TMO)
 550                                 lpfc_els_timeout_handler(vport);
 551                         if (work_port_events & WORKER_HB_TMO)
 552                                 lpfc_hb_timeout_handler(phba);
 553                         if (work_port_events & WORKER_MBOX_TMO)
 554                                 lpfc_mbox_timeout_handler(phba);
 555                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
 556                                 lpfc_unblock_fabric_iocbs(phba);
 557                         if (work_port_events & WORKER_FDMI_TMO)
 558                                 lpfc_fdmi_timeout_handler(vport);
 559                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
 560                                 lpfc_ramp_down_queue_handler(phba);
 561                         if (work_port_events & WORKER_RAMP_UP_QUEUE)
 562                                 lpfc_ramp_up_queue_handler(phba);
 563                 }
 564         lpfc_destroy_vport_work_array(phba, vports);
 565
 566         pring = &phba->sli.ring[LPFC_ELS_RING];
 567         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
 568         status >>= (4*LPFC_ELS_RING);
 569         if ((status & HA_RXMASK) ||
 570             (pring->flag & LPFC_DEFERRED_RING_EVENT) ||
 571             (phba->hba_flag & HBA_SP_QUEUE_EVT)) {
 572                 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
 573                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
 574                         /* Set the lpfc data pending flag */
 575                         set_bit(LPFC_DATA_READY, &phba->data_flags);
 576                 } else {
 577                         pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
 578                         lpfc_sli_handle_slow_ring_event(phba, pring,
 579                                                         (status &
 580                                                          HA_RXMASK));
 581                 }
 582                 /*
 583                  * Turn on Ring interrupts
 584                  */
 585                 if (phba->sli_rev <= LPFC_SLI_REV3) {
 586                         spin_lock_irq(&phba->hbalock);
 587                         control = readl(phba->HCregaddr);
 588                         if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
 589                                 lpfc_debugfs_slow_ring_trc(phba,
 590                                         "WRK Enable ring: cntl:x%x hacopy:x%x",
 591                                         control, ha_copy, 0);
 592
 593                                 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
 594                                 writel(control, phba->HCregaddr);
 595                                 readl(phba->HCregaddr); /* flush */
 596                         } else {
 597                                 lpfc_debugfs_slow_ring_trc(phba,
 598                                         "WRK Ring ok:     cntl:x%x hacopy:x%x",
 599                                         control, ha_copy, 0);
 600                         }
 601                         spin_unlock_irq(&phba->hbalock);
 602                 }
 603         }
 604         lpfc_work_list_done(phba);
 605 }
 606
 607 int
 608 lpfc_do_work(void *p)
 609 {
 610         struct lpfc_hba *phba = p;
 611         int rc;
 612
 613         set_user_nice(current, -20);
 614         phba->data_flags = 0;
 615
 616         while (!kthread_should_stop()) {
 617                 /* wait and check worker queue activities */
 618                 rc = wait_event_interruptible(phba->work_waitq,
 619                                         (test_and_clear_bit(LPFC_DATA_READY,
 620                                                             &phba->data_flags)
 621                                          || kthread_should_stop()));
 622                 /* Signal wakeup shall terminate the worker thread */
 623                 if (rc) {
 624                         lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
 625                                         "0433 Wakeup on signal: rc=x%x\n", rc);
 626                         break;
 627                 }
 628
 629                 /* Attend pending lpfc data processing */
 630                 lpfc_work_done(phba);
 631         }
 632         phba->worker_thread = NULL;
 633         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
 634                         "0432 Worker thread stopped.\n");
 635         return 0;
 636 }
 637
 638 /*
 639  * This is only called to handle FC worker events. Since this a rare
 640  * occurance, we allocate a struct lpfc_work_evt structure here instead of
 641  * embedding it in the IOCB.
 642  */
 643 int
 644 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
 645                       uint32_t evt)
 646 {
 647         struct lpfc_work_evt  *evtp;
 648         unsigned long flags;
 649
 650         /*
 651          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
 652          * be queued to worker thread for processing
 653          */
 654         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
 655         if (!evtp)
 656                 return 0;
 657
 658         evtp->evt_arg1  = arg1;
 659         evtp->evt_arg2  = arg2;
 660         evtp->evt       = evt;
 661
 662         spin_lock_irqsave(&phba->hbalock, flags);
 663         list_add_tail(&evtp->evt_listp, &phba->work_list);
 664         spin_unlock_irqrestore(&phba->hbalock, flags);
 665
 666         lpfc_worker_wake_up(phba);
 667
 668         return 1;
 669 }
 670
 671 void
 672 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
 673 {
 674         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 675         struct lpfc_hba  *phba = vport->phba;
 676         struct lpfc_nodelist *ndlp, *next_ndlp;
 677         int  rc;
 678
 679         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
 680                 if (!NLP_CHK_NODE_ACT(ndlp))
 681                         continue;
 682                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 683                         continue;
 684                 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
 685                         ((vport->port_type == LPFC_NPIV_PORT) &&
 686                         (ndlp->nlp_DID == NameServer_DID)))
 687                         lpfc_unreg_rpi(vport, ndlp);
 688
 689                 /* Leave Fabric nodes alone on link down */
 690                 if ((phba->sli_rev < LPFC_SLI_REV4) &&
 691                     (!remove && ndlp->nlp_type & NLP_FABRIC))
 692                         continue;
 693                 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
 694                                              remove
 695                                              ? NLP_EVT_DEVICE_RM
 696                                              : NLP_EVT_DEVICE_RECOVERY);
 697         }
 698         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
 699                 lpfc_mbx_unreg_vpi(vport);
 700                 spin_lock_irq(shost->host_lock);
 701                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
 702                 spin_unlock_irq(shost->host_lock);
 703         }
 704 }
 705
 706 void
 707 lpfc_port_link_failure(struct lpfc_vport *vport)
 708 {
 709         /* Cleanup any outstanding received buffers */
 710         lpfc_cleanup_rcv_buffers(vport);
 711
 712         /* Cleanup any outstanding RSCN activity */
 713         lpfc_els_flush_rscn(vport);
 714
 715         /* Cleanup any outstanding ELS commands */
 716         lpfc_els_flush_cmd(vport);
 717
 718         lpfc_cleanup_rpis(vport, 0);
 719
 720         /* Turn off discovery timer if its running */
 721         lpfc_can_disctmo(vport);
 722 }
 723
 724 void
 725 lpfc_linkdown_port(struct lpfc_vport *vport)
 726 {
 727         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 728
 729         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
 730
 731         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 732                 "Link Down:       state:x%x rtry:x%x flg:x%x",
 733                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
 734
 735         lpfc_port_link_failure(vport);
 736
 737 }
 738
 739 int
 740 lpfc_linkdown(struct lpfc_hba *phba)
 741 {
 742         struct lpfc_vport *vport = phba->pport;
 743         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 744         struct lpfc_vport **vports;
 745         LPFC_MBOXQ_t          *mb;
 746         int i;
 747
 748         if (phba->link_state == LPFC_LINK_DOWN)
 749                 return 0;
 750
 751         /* Block all SCSI stack I/Os */
 752         lpfc_scsi_dev_block(phba);
 753
 754         spin_lock_irq(&phba->hbalock);
 755         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_DISCOVERED);
 756         if (phba->link_state > LPFC_LINK_DOWN) {
 757                 phba->link_state = LPFC_LINK_DOWN;
 758                 phba->pport->fc_flag &= ~FC_LBIT;
 759         }
 760         spin_unlock_irq(&phba->hbalock);
 761         vports = lpfc_create_vport_work_array(phba);
 762         if (vports != NULL)
 763                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
 764                         /* Issue a LINK DOWN event to all nodes */
 765                         lpfc_linkdown_port(vports[i]);
 766                 }
 767         lpfc_destroy_vport_work_array(phba, vports);
 768         /* Clean up any firmware default rpi's */
 769         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 770         if (mb) {
 771                 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
 772                 mb->vport = vport;
 773                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 774                 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 775                     == MBX_NOT_FINISHED) {
 776                         mempool_free(mb, phba->mbox_mem_pool);
 777                 }
 778         }
 779
 780         /* Setup myDID for link up if we are in pt2pt mode */
 781         if (phba->pport->fc_flag & FC_PT2PT) {
 782                 phba->pport->fc_myDID = 0;
 783                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 784                 if (mb) {
 785                         lpfc_config_link(phba, mb);
 786                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 787                         mb->vport = vport;
 788                         if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 789                             == MBX_NOT_FINISHED) {
 790                                 mempool_free(mb, phba->mbox_mem_pool);
 791                         }
 792                 }
 793                 spin_lock_irq(shost->host_lock);
 794                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
 795                 spin_unlock_irq(shost->host_lock);
 796         }
 797
 798         return 0;
 799 }
 800
 801 static void
 802 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
 803 {
 804         struct lpfc_nodelist *ndlp;
 805
 806         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
 807                 if (!NLP_CHK_NODE_ACT(ndlp))
 808                         continue;
 809                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 810                         continue;
 811                 if (ndlp->nlp_type & NLP_FABRIC) {
 812                         /* On Linkup its safe to clean up the ndlp
 813                          * from Fabric connections.
 814                          */
 815                         if (ndlp->nlp_DID != Fabric_DID)
 816                                 lpfc_unreg_rpi(vport, ndlp);
 817                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 818                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
 819                         /* Fail outstanding IO now since device is
 820                          * marked for PLOGI.
 821                          */
 822                         lpfc_unreg_rpi(vport, ndlp);
 823                 }
 824         }
 825 }
 826
 827 static void
 828 lpfc_linkup_port(struct lpfc_vport *vport)
 829 {
 830         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 831         struct lpfc_hba  *phba = vport->phba;
 832
 833         if ((vport->load_flag & FC_UNLOADING) != 0)
 834                 return;
 835
 836         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 837                 "Link Up:         top:x%x speed:x%x flg:x%x",
 838                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
 839
 840         /* If NPIV is not enabled, only bring the physical port up */
 841         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
 842                 (vport != phba->pport))
 843                 return;
 844
 845         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
 846
 847         spin_lock_irq(shost->host_lock);
 848         vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
 849                             FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
 850         vport->fc_flag |= FC_NDISC_ACTIVE;
 851         vport->fc_ns_retry = 0;
 852         spin_unlock_irq(shost->host_lock);
 853
 854         if (vport->fc_flag & FC_LBIT)
 855                 lpfc_linkup_cleanup_nodes(vport);
 856
 857 }
 858
 859 static int
 860 lpfc_linkup(struct lpfc_hba *phba)
 861 {
 862         struct lpfc_vport **vports;
 863         int i;
 864
 865         phba->link_state = LPFC_LINK_UP;
 866
 867         /* Unblock fabric iocbs if they are blocked */
 868         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
 869         del_timer_sync(&phba->fabric_block_timer);
 870
 871         vports = lpfc_create_vport_work_array(phba);
 872         if (vports != NULL)
 873                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
 874                         lpfc_linkup_port(vports[i]);
 875         lpfc_destroy_vport_work_array(phba, vports);
 876         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
 877             (phba->sli_rev < LPFC_SLI_REV4))
 878                 lpfc_issue_clear_la(phba, phba->pport);
 879
 880         return 0;
 881 }
 882
 883 /*
 884  * This routine handles processing a CLEAR_LA mailbox
 885  * command upon completion. It is setup in the LPFC_MBOXQ
 886  * as the completion routine when the command is
 887  * handed off to the SLI layer.
 888  */
 889 static void
 890 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 891 {
 892         struct lpfc_vport *vport = pmb->vport;
 893         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 894         struct lpfc_sli   *psli = &phba->sli;
 895         MAILBOX_t *mb = &pmb->u.mb;
 896         uint32_t control;
 897
 898         /* Since we don't do discovery right now, turn these off here */
 899         psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 900         psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 901         psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 902
 903         /* Check for error */
 904         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
 905                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
 906                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 907                                  "0320 CLEAR_LA mbxStatus error x%x hba "
 908                                  "state x%x\n",
 909                                  mb->mbxStatus, vport->port_state);
 910                 phba->link_state = LPFC_HBA_ERROR;
 911                 goto out;
 912         }
 913
 914         if (vport->port_type == LPFC_PHYSICAL_PORT)
 915                 phba->link_state = LPFC_HBA_READY;
 916
 917         spin_lock_irq(&phba->hbalock);
 918         psli->sli_flag |= LPFC_PROCESS_LA;
 919         control = readl(phba->HCregaddr);
 920         control |= HC_LAINT_ENA;
 921         writel(control, phba->HCregaddr);
 922         readl(phba->HCregaddr); /* flush */
 923         spin_unlock_irq(&phba->hbalock);
 924         mempool_free(pmb, phba->mbox_mem_pool);
 925         return;
 926
 927 out:
 928         /* Device Discovery completes */
 929         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 930                          "0225 Device Discovery completes\n");
 931         mempool_free(pmb, phba->mbox_mem_pool);
 932
 933         spin_lock_irq(shost->host_lock);
 934         vport->fc_flag &= ~FC_ABORT_DISCOVERY;
 935         spin_unlock_irq(shost->host_lock);
 936
 937         lpfc_can_disctmo(vport);
 938
 939         /* turn on Link Attention interrupts */
 940
 941         spin_lock_irq(&phba->hbalock);
 942         psli->sli_flag |= LPFC_PROCESS_LA;
 943         control = readl(phba->HCregaddr);
 944         control |= HC_LAINT_ENA;
 945         writel(control, phba->HCregaddr);
 946         readl(phba->HCregaddr); /* flush */
 947         spin_unlock_irq(&phba->hbalock);
 948
 949         return;
 950 }
 951
 952
 953 static void
 954 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 955 {
 956         struct lpfc_vport *vport = pmb->vport;
 957
 958         if (pmb->u.mb.mbxStatus)
 959                 goto out;
 960
 961         mempool_free(pmb, phba->mbox_mem_pool);
 962
 963         if (phba->fc_topology == TOPOLOGY_LOOP &&
 964             vport->fc_flag & FC_PUBLIC_LOOP &&
 965             !(vport->fc_flag & FC_LBIT)) {
 966                         /* Need to wait for FAN - use discovery timer
 967                          * for timeout.  port_state is identically
 968                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
 969                          */
 970                         lpfc_set_disctmo(vport);
 971                         return;
 972         }
 973
 974         /* Start discovery by sending a FLOGI. port_state is identically
 975          * LPFC_FLOGI while waiting for FLOGI cmpl
 976          */
 977         if (vport->port_state != LPFC_FLOGI) {
 978                 lpfc_initial_flogi(vport);
 979         }
 980         return;
 981
 982 out:
 983         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 984                          "0306 CONFIG_LINK mbxStatus error x%x "
 985                          "HBA state x%x\n",
 986                          pmb->u.mb.mbxStatus, vport->port_state);
 987         mempool_free(pmb, phba->mbox_mem_pool);
 988
 989         lpfc_linkdown(phba);
 990
 991         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 992                          "0200 CONFIG_LINK bad hba state x%x\n",
 993                          vport->port_state);
 994
 995         lpfc_issue_clear_la(phba, vport);
 996         return;
 997 }
 998
 999 static void
1000 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1001 {
1002         struct lpfc_vport *vport = mboxq->vport;
1003         unsigned long flags;
1004
1005         if (mboxq->u.mb.mbxStatus) {
1006                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1007                          "2017 REG_FCFI mbxStatus error x%x "
1008                          "HBA state x%x\n",
1009                          mboxq->u.mb.mbxStatus, vport->port_state);
1010                 mempool_free(mboxq, phba->mbox_mem_pool);
1011                 return;
1012         }
1013
1014         /* Start FCoE discovery by sending a FLOGI. */
1015         phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1016         /* Set the FCFI registered flag */
1017         spin_lock_irqsave(&phba->hbalock, flags);
1018         phba->fcf.fcf_flag |= FCF_REGISTERED;
1019         spin_unlock_irqrestore(&phba->hbalock, flags);
1020         /* If there is a pending FCoE event, restart FCF table scan. */
1021         if (lpfc_check_pending_fcoe_event(phba, 1)) {
1022                 mempool_free(mboxq, phba->mbox_mem_pool);
1023                 return;
1024         }
1025         spin_lock_irqsave(&phba->hbalock, flags);
1026         phba->fcf.fcf_flag |= (FCF_DISCOVERED | FCF_IN_USE);
1027         phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1028         spin_unlock_irqrestore(&phba->hbalock, flags);
1029         if (vport->port_state != LPFC_FLOGI)
1030                 lpfc_initial_flogi(vport);
1031
1032         mempool_free(mboxq, phba->mbox_mem_pool);
1033         return;
1034 }
1035
1036 /**
1037  * lpfc_fab_name_match - Check if the fcf fabric name match.
1038  * @fab_name: pointer to fabric name.
1039  * @new_fcf_record: pointer to fcf record.
1040  *
1041  * This routine compare the fcf record's fabric name with provided
1042  * fabric name. If the fabric name are identical this function
1043  * returns 1 else return 0.
1044  **/
1045 static uint32_t
1046 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1047 {
1048         if ((fab_name[0] ==
1049                 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record)) &&
1050             (fab_name[1] ==
1051                 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record)) &&
1052             (fab_name[2] ==
1053                 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record)) &&
1054             (fab_name[3] ==
1055                 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record)) &&
1056             (fab_name[4] ==
1057                 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record)) &&
1058             (fab_name[5] ==
1059                 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record)) &&
1060             (fab_name[6] ==
1061                 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record)) &&
1062             (fab_name[7] ==
1063                 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record)))
1064                 return 1;
1065         else
1066                 return 0;
1067 }
1068
1069 /**
1070  * lpfc_sw_name_match - Check if the fcf switch name match.
1071  * @fab_name: pointer to fabric name.
1072  * @new_fcf_record: pointer to fcf record.
1073  *
1074  * This routine compare the fcf record's switch name with provided
1075  * switch name. If the switch name are identical this function
1076  * returns 1 else return 0.
1077  **/
1078 static uint32_t
1079 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1080 {
1081         if ((sw_name[0] ==
1082                 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record)) &&
1083             (sw_name[1] ==
1084                 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record)) &&
1085             (sw_name[2] ==
1086                 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record)) &&
1087             (sw_name[3] ==
1088                 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record)) &&
1089             (sw_name[4] ==
1090                 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record)) &&
1091             (sw_name[5] ==
1092                 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record)) &&
1093             (sw_name[6] ==
1094                 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record)) &&
1095             (sw_name[7] ==
1096                 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record)))
1097                 return 1;
1098         else
1099                 return 0;
1100 }
1101
1102 /**
1103  * lpfc_mac_addr_match - Check if the fcf mac address match.
1104  * @phba: pointer to lpfc hba data structure.
1105  * @new_fcf_record: pointer to fcf record.
1106  *
1107  * This routine compare the fcf record's mac address with HBA's
1108  * FCF mac address. If the mac addresses are identical this function
1109  * returns 1 else return 0.
1110  **/
1111 static uint32_t
1112 lpfc_mac_addr_match(struct lpfc_hba *phba, struct fcf_record *new_fcf_record)
1113 {
1114         if ((phba->fcf.mac_addr[0] ==
1115                 bf_get(lpfc_fcf_record_mac_0, new_fcf_record)) &&
1116             (phba->fcf.mac_addr[1] ==
1117                 bf_get(lpfc_fcf_record_mac_1, new_fcf_record)) &&
1118             (phba->fcf.mac_addr[2] ==
1119                 bf_get(lpfc_fcf_record_mac_2, new_fcf_record)) &&
1120             (phba->fcf.mac_addr[3] ==
1121                 bf_get(lpfc_fcf_record_mac_3, new_fcf_record)) &&
1122             (phba->fcf.mac_addr[4] ==
1123                 bf_get(lpfc_fcf_record_mac_4, new_fcf_record)) &&
1124             (phba->fcf.mac_addr[5] ==
1125                 bf_get(lpfc_fcf_record_mac_5, new_fcf_record)))
1126                 return 1;
1127         else
1128                 return 0;
1129 }
1130
1131 /**
1132  * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1133  * @phba: pointer to lpfc hba data structure.
1134  * @new_fcf_record: pointer to fcf record.
1135  *
1136  * This routine copies the FCF information from the FCF
1137  * record to lpfc_hba data structure.
1138  **/
1139 static void
1140 lpfc_copy_fcf_record(struct lpfc_hba *phba, struct fcf_record *new_fcf_record)
1141 {
1142         phba->fcf.fabric_name[0] =
1143                 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1144         phba->fcf.fabric_name[1] =
1145                 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1146         phba->fcf.fabric_name[2] =
1147                 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1148         phba->fcf.fabric_name[3] =
1149                 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1150         phba->fcf.fabric_name[4] =
1151                 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1152         phba->fcf.fabric_name[5] =
1153                 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1154         phba->fcf.fabric_name[6] =
1155                 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1156         phba->fcf.fabric_name[7] =
1157                 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1158         phba->fcf.mac_addr[0] =
1159                 bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1160         phba->fcf.mac_addr[1] =
1161                 bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1162         phba->fcf.mac_addr[2] =
1163                 bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1164         phba->fcf.mac_addr[3] =
1165                 bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1166         phba->fcf.mac_addr[4] =
1167                 bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1168         phba->fcf.mac_addr[5] =
1169                 bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1170         phba->fcf.fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1171         phba->fcf.priority = new_fcf_record->fip_priority;
1172         phba->fcf.switch_name[0] =
1173                 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1174         phba->fcf.switch_name[1] =
1175                 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1176         phba->fcf.switch_name[2] =
1177                 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1178         phba->fcf.switch_name[3] =
1179                 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1180         phba->fcf.switch_name[4] =
1181                 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1182         phba->fcf.switch_name[5] =
1183                 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1184         phba->fcf.switch_name[6] =
1185                 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1186         phba->fcf.switch_name[7] =
1187                 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1188 }
1189
1190 /**
1191  * lpfc_register_fcf - Register the FCF with hba.
1192  * @phba: pointer to lpfc hba data structure.
1193  *
1194  * This routine issues a register fcfi mailbox command to register
1195  * the fcf with HBA.
1196  **/
1197 static void
1198 lpfc_register_fcf(struct lpfc_hba *phba)
1199 {
1200         LPFC_MBOXQ_t *fcf_mbxq;
1201         int rc;
1202         unsigned long flags;
1203
1204         spin_lock_irqsave(&phba->hbalock, flags);
1205
1206         /* If the FCF is not availabe do nothing. */
1207         if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1208                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1209                 spin_unlock_irqrestore(&phba->hbalock, flags);
1210                 return;
1211         }
1212
1213         /* The FCF is already registered, start discovery */
1214         if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1215                 phba->fcf.fcf_flag |= (FCF_DISCOVERED | FCF_IN_USE);
1216                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1217                 spin_unlock_irqrestore(&phba->hbalock, flags);
1218                 if (phba->pport->port_state != LPFC_FLOGI)
1219                         lpfc_initial_flogi(phba->pport);
1220                 return;
1221         }
1222         spin_unlock_irqrestore(&phba->hbalock, flags);
1223
1224         fcf_mbxq = mempool_alloc(phba->mbox_mem_pool,
1225                 GFP_KERNEL);
1226         if (!fcf_mbxq) {
1227                 spin_lock_irqsave(&phba->hbalock, flags);
1228                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1229                 spin_unlock_irqrestore(&phba->hbalock, flags);
1230                 return;
1231         }
1232
1233         lpfc_reg_fcfi(phba, fcf_mbxq);
1234         fcf_mbxq->vport = phba->pport;
1235         fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1236         rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1237         if (rc == MBX_NOT_FINISHED) {
1238                 spin_lock_irqsave(&phba->hbalock, flags);
1239                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1240                 spin_unlock_irqrestore(&phba->hbalock, flags);
1241                 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1242         }
1243
1244         return;
1245 }
1246
1247 /**
1248  * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1249  * @phba: pointer to lpfc hba data structure.
1250  * @new_fcf_record: pointer to fcf record.
1251  * @boot_flag: Indicates if this record used by boot bios.
1252  * @addr_mode: The address mode to be used by this FCF
1253  *
1254  * This routine compare the fcf record with connect list obtained from the
1255  * config region to decide if this FCF can be used for SAN discovery. It returns
1256  * 1 if this record can be used for SAN discovery else return zero. If this FCF
1257  * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1258  * is used by boot bios and addr_mode will indicate the addressing mode to be
1259  * used for this FCF when the function returns.
1260  * If the FCF record need to be used with a particular vlan id, the vlan is
1261  * set in the vlan_id on return of the function. If not VLAN tagging need to
1262  * be used with the FCF vlan_id will be set to 0xFFFF;
1263  **/
1264 static int
1265 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1266                         struct fcf_record *new_fcf_record,
1267                         uint32_t *boot_flag, uint32_t *addr_mode,
1268                         uint16_t *vlan_id)
1269 {
1270         struct lpfc_fcf_conn_entry *conn_entry;
1271         int i, j, fcf_vlan_id = 0;
1272
1273         /* Find the lowest VLAN id in the FCF record */
1274         for (i = 0; i < 512; i++) {
1275                 if (new_fcf_record->vlan_bitmap[i]) {
1276                         fcf_vlan_id = i * 8;
1277                         j = 0;
1278                         while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
1279                                 j++;
1280                                 fcf_vlan_id++;
1281                         }
1282                         break;
1283                 }
1284         }
1285
1286         /* If FCF not available return 0 */
1287         if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1288                 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record))
1289                 return 0;
1290
1291         if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
1292                 *boot_flag = 0;
1293                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1294                                 new_fcf_record);
1295                 if (phba->valid_vlan)
1296                         *vlan_id = phba->vlan_id;
1297                 else
1298                         *vlan_id = 0xFFFF;
1299                 return 1;
1300         }
1301
1302         /*
1303          * If there are no FCF connection table entry, driver connect to all
1304          * FCFs.
1305          */
1306         if (list_empty(&phba->fcf_conn_rec_list)) {
1307                 *boot_flag = 0;
1308                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1309                         new_fcf_record);
1310
1311                 /*
1312                  * When there are no FCF connect entries, use driver's default
1313                  * addressing mode - FPMA.
1314                  */
1315                 if (*addr_mode & LPFC_FCF_FPMA)
1316                         *addr_mode = LPFC_FCF_FPMA;
1317
1318                 /* If FCF record report a vlan id use that vlan id */
1319                 if (fcf_vlan_id)
1320                         *vlan_id = fcf_vlan_id;
1321                 else
1322                         *vlan_id = 0xFFFF;
1323                 return 1;
1324         }
1325
1326         list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list, list) {
1327                 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
1328                         continue;
1329
1330                 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
1331                         !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
1332                                              new_fcf_record))
1333                         continue;
1334                 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
1335                         !lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
1336                                             new_fcf_record))
1337                         continue;
1338                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
1339                         /*
1340                          * If the vlan bit map does not have the bit set for the
1341                          * vlan id to be used, then it is not a match.
1342                          */
1343                         if (!(new_fcf_record->vlan_bitmap
1344                                 [conn_entry->conn_rec.vlan_tag / 8] &
1345                                 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
1346                                 continue;
1347                 }
1348
1349                 /*
1350                  * If connection record does not support any addressing mode,
1351                  * skip the FCF record.
1352                  */
1353                 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
1354                         & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
1355                         continue;
1356
1357                 /*
1358                  * Check if the connection record specifies a required
1359                  * addressing mode.
1360                  */
1361                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1362                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
1363
1364                         /*
1365                          * If SPMA required but FCF not support this continue.
1366                          */
1367                         if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1368                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1369                                         new_fcf_record) & LPFC_FCF_SPMA))
1370                                 continue;
1371
1372                         /*
1373                          * If FPMA required but FCF not support this continue.
1374                          */
1375                         if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1376                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1377                                 new_fcf_record) & LPFC_FCF_FPMA))
1378                                 continue;
1379                 }
1380
1381                 /*
1382                  * This fcf record matches filtering criteria.
1383                  */
1384                 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
1385                         *boot_flag = 1;
1386                 else
1387                         *boot_flag = 0;
1388
1389                 /*
1390                  * If user did not specify any addressing mode, or if the
1391                  * prefered addressing mode specified by user is not supported
1392                  * by FCF, allow fabric to pick the addressing mode.
1393                  */
1394                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1395                                 new_fcf_record);
1396                 /*
1397                  * If the user specified a required address mode, assign that
1398                  * address mode
1399                  */
1400                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1401                         (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
1402                         *addr_mode = (conn_entry->conn_rec.flags &
1403                                 FCFCNCT_AM_SPMA) ?
1404                                 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
1405                 /*
1406                  * If the user specified a prefered address mode, use the
1407                  * addr mode only if FCF support the addr_mode.
1408                  */
1409                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1410                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1411                         (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1412                         (*addr_mode & LPFC_FCF_SPMA))
1413                                 *addr_mode = LPFC_FCF_SPMA;
1414                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1415                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1416                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1417                         (*addr_mode & LPFC_FCF_FPMA))
1418                                 *addr_mode = LPFC_FCF_FPMA;
1419
1420                 /* If matching connect list has a vlan id, use it */
1421                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
1422                         *vlan_id = conn_entry->conn_rec.vlan_tag;
1423                 /*
1424                  * If no vlan id is specified in connect list, use the vlan id
1425                  * in the FCF record
1426                  */
1427                 else if (fcf_vlan_id)
1428                         *vlan_id = fcf_vlan_id;
1429                 else
1430                         *vlan_id = 0xFFFF;
1431
1432                 return 1;
1433         }
1434
1435         return 0;
1436 }
1437
1438 /**
1439  * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
1440  * @phba: pointer to lpfc hba data structure.
1441  * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
1442  *
1443  * This function check if there is any fcoe event pending while driver
1444  * scan FCF entries. If there is any pending event, it will restart the
1445  * FCF saning and return 1 else return 0.
1446  */
1447 int
1448 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
1449 {
1450         LPFC_MBOXQ_t *mbox;
1451         int rc;
1452         /*
1453          * If the Link is up and no FCoE events while in the
1454          * FCF discovery, no need to restart FCF discovery.
1455          */
1456         if ((phba->link_state  >= LPFC_LINK_UP) &&
1457                 (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
1458                 return 0;
1459
1460         spin_lock_irq(&phba->hbalock);
1461         phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
1462         spin_unlock_irq(&phba->hbalock);
1463
1464         if (phba->link_state >= LPFC_LINK_UP)
1465                 lpfc_sli4_read_fcf_record(phba, LPFC_FCOE_FCF_GET_FIRST);
1466         else {
1467                 /*
1468                  * Do not continue FCF discovery and clear FCF_DISC_INPROGRESS
1469                  * flag
1470                  */
1471                 spin_lock_irq(&phba->hbalock);
1472                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1473                 spin_unlock_irq(&phba->hbalock);
1474         }
1475
1476         if (unreg_fcf) {
1477                 spin_lock_irq(&phba->hbalock);
1478                 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
1479                 spin_unlock_irq(&phba->hbalock);
1480                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1481                 if (!mbox) {
1482                         lpfc_printf_log(phba, KERN_ERR,
1483                                 LOG_DISCOVERY|LOG_MBOX,
1484                                 "2610 UNREG_FCFI mbox allocation failed\n");
1485                         return 1;
1486                 }
1487                 lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
1488                 mbox->vport = phba->pport;
1489                 mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
1490                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1491                 if (rc == MBX_NOT_FINISHED) {
1492                         lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
1493                                 "2611 UNREG_FCFI issue mbox failed\n");
1494                         mempool_free(mbox, phba->mbox_mem_pool);
1495                 }
1496         }
1497
1498         return 1;
1499 }
1500
1501 /**
1502  * lpfc_mbx_cmpl_read_fcf_record - Completion handler for read_fcf mbox.
1503  * @phba: pointer to lpfc hba data structure.
1504  * @mboxq: pointer to mailbox object.
1505  *
1506  * This function iterate through all the fcf records available in
1507  * HBA and choose the optimal FCF record for discovery. After finding
1508  * the FCF for discovery it register the FCF record and kick start
1509  * discovery.
1510  * If FCF_IN_USE flag is set in currently used FCF, the routine try to
1511  * use a FCF record which match fabric name and mac address of the
1512  * currently used FCF record.
1513  * If the driver support only one FCF, it will try to use the FCF record
1514  * used by BOOT_BIOS.
1515  */
1516 void
1517 lpfc_mbx_cmpl_read_fcf_record(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1518 {
1519         void *virt_addr;
1520         dma_addr_t phys_addr;
1521         uint8_t *bytep;
1522         struct lpfc_mbx_sge sge;
1523         struct lpfc_mbx_read_fcf_tbl *read_fcf;
1524         uint32_t shdr_status, shdr_add_status;
1525         union lpfc_sli4_cfg_shdr *shdr;
1526         struct fcf_record *new_fcf_record;
1527         int rc;
1528         uint32_t boot_flag, addr_mode;
1529         uint32_t next_fcf_index;
1530         unsigned long flags;
1531         uint16_t vlan_id;
1532
1533         /* If there is pending FCoE event restart FCF table scan */
1534         if (lpfc_check_pending_fcoe_event(phba, 0)) {
1535                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
1536                 return;
1537         }
1538
1539         /* Get the first SGE entry from the non-embedded DMA memory. This
1540          * routine only uses a single SGE.
1541          */
1542         lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
1543         phys_addr = getPaddr(sge.pa_hi, sge.pa_lo);
1544         if (unlikely(!mboxq->sge_array)) {
1545                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1546                                 "2524 Failed to get the non-embedded SGE "
1547                                 "virtual address\n");
1548                 goto out;
1549         }
1550         virt_addr = mboxq->sge_array->addr[0];
1551
1552         shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
1553         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
1554         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
1555                                  &shdr->response);
1556         /*
1557          * The FCF Record was read and there is no reason for the driver
1558          * to maintain the FCF record data or memory. Instead, just need
1559          * to book keeping the FCFIs can be used.
1560          */
1561         if (shdr_status || shdr_add_status) {
1562                 if (shdr_status == STATUS_FCF_TABLE_EMPTY) {
1563                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1564                                         "2726 READ_FCF_RECORD Indicates empty "
1565                                         "FCF table.\n");
1566                 } else {
1567                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1568                                         "2521 READ_FCF_RECORD mailbox failed "
1569                                         "with status x%x add_status x%x, mbx\n",
1570                                         shdr_status, shdr_add_status);
1571                 }
1572                 goto out;
1573         }
1574         /* Interpreting the returned information of FCF records */
1575         read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
1576         lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
1577                               sizeof(struct lpfc_mbx_read_fcf_tbl));
1578         next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
1579
1580         new_fcf_record = (struct fcf_record *)(virt_addr +
1581                           sizeof(struct lpfc_mbx_read_fcf_tbl));
1582         lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
1583                               sizeof(struct fcf_record));
1584         bytep = virt_addr + sizeof(union lpfc_sli4_cfg_shdr);
1585
1586         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record,
1587                                       &boot_flag, &addr_mode,
1588                                         &vlan_id);
1589         /*
1590          * If the fcf record does not match with connect list entries
1591          * read the next entry.
1592          */
1593         if (!rc)
1594                 goto read_next_fcf;
1595         /*
1596          * If this is not the first FCF discovery of the HBA, use last
1597          * FCF record for the discovery.
1598          */
1599         spin_lock_irqsave(&phba->hbalock, flags);
1600         if (phba->fcf.fcf_flag & FCF_IN_USE) {
1601                 if (lpfc_fab_name_match(phba->fcf.fabric_name,
1602                                         new_fcf_record) &&
1603                     lpfc_sw_name_match(phba->fcf.switch_name,
1604                                         new_fcf_record) &&
1605                     lpfc_mac_addr_match(phba, new_fcf_record)) {
1606                         phba->fcf.fcf_flag |= FCF_AVAILABLE;
1607                         spin_unlock_irqrestore(&phba->hbalock, flags);
1608                         goto out;
1609                 }
1610                 spin_unlock_irqrestore(&phba->hbalock, flags);
1611                 goto read_next_fcf;
1612         }
1613         if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
1614                 /*
1615                  * If the current FCF record does not have boot flag
1616                  * set and new fcf record has boot flag set, use the
1617                  * new fcf record.
1618                  */
1619                 if (boot_flag && !(phba->fcf.fcf_flag & FCF_BOOT_ENABLE)) {
1620                         /* Use this FCF record */
1621                         lpfc_copy_fcf_record(phba, new_fcf_record);
1622                         phba->fcf.addr_mode = addr_mode;
1623                         phba->fcf.fcf_flag |= FCF_BOOT_ENABLE;
1624                         if (vlan_id != 0xFFFF) {
1625                                 phba->fcf.fcf_flag |= FCF_VALID_VLAN;
1626                                 phba->fcf.vlan_id = vlan_id;
1627                         }
1628                         spin_unlock_irqrestore(&phba->hbalock, flags);
1629                         goto read_next_fcf;
1630                 }
1631                 /*
1632                  * If the current FCF record has boot flag set and the
1633                  * new FCF record does not have boot flag, read the next
1634                  * FCF record.
1635                  */
1636                 if (!boot_flag && (phba->fcf.fcf_flag & FCF_BOOT_ENABLE)) {
1637                         spin_unlock_irqrestore(&phba->hbalock, flags);
1638                         goto read_next_fcf;
1639                 }
1640                 /*
1641                  * If there is a record with lower priority value for
1642                  * the current FCF, use that record.
1643                  */
1644                 if (lpfc_fab_name_match(phba->fcf.fabric_name,
1645                                         new_fcf_record) &&
1646                     (new_fcf_record->fip_priority < phba->fcf.priority)) {
1647                         /* Use this FCF record */
1648                         lpfc_copy_fcf_record(phba, new_fcf_record);
1649                         phba->fcf.addr_mode = addr_mode;
1650                         if (vlan_id != 0xFFFF) {
1651                                 phba->fcf.fcf_flag |= FCF_VALID_VLAN;
1652                                 phba->fcf.vlan_id = vlan_id;
1653                         }
1654                         spin_unlock_irqrestore(&phba->hbalock, flags);
1655                         goto read_next_fcf;
1656                 }
1657                 spin_unlock_irqrestore(&phba->hbalock, flags);
1658                 goto read_next_fcf;
1659         }
1660         /*
1661          * This is the first available FCF record, use this
1662          * record.
1663          */
1664         lpfc_copy_fcf_record(phba, new_fcf_record);
1665         phba->fcf.addr_mode = addr_mode;
1666         if (boot_flag)
1667                 phba->fcf.fcf_flag |= FCF_BOOT_ENABLE;
1668         phba->fcf.fcf_flag |= FCF_AVAILABLE;
1669         if (vlan_id != 0xFFFF) {
1670                 phba->fcf.fcf_flag |= FCF_VALID_VLAN;
1671                 phba->fcf.vlan_id = vlan_id;
1672         }
1673         spin_unlock_irqrestore(&phba->hbalock, flags);
1674         goto read_next_fcf;
1675
1676 read_next_fcf:
1677         lpfc_sli4_mbox_cmd_free(phba, mboxq);
1678         if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0)
1679                 lpfc_register_fcf(phba);
1680         else
1681                 lpfc_sli4_read_fcf_record(phba, next_fcf_index);
1682         return;
1683
1684 out:
1685         lpfc_sli4_mbox_cmd_free(phba, mboxq);
1686         lpfc_register_fcf(phba);
1687
1688         return;
1689 }
1690
1691 /**
1692  * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
1693  * @phba: pointer to lpfc hba data structure.
1694  * @mboxq: pointer to mailbox data structure.
1695  *
1696  * This function handles completion of init vpi mailbox command.
1697  */
1698 static void
1699 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1700 {
1701         struct lpfc_vport *vport = mboxq->vport;
1702         if (mboxq->u.mb.mbxStatus) {
1703                 lpfc_printf_vlog(vport, KERN_ERR,
1704                                 LOG_MBOX,
1705                                 "2609 Init VPI mailbox failed 0x%x\n",
1706                                 mboxq->u.mb.mbxStatus);
1707                 mempool_free(mboxq, phba->mbox_mem_pool);
1708                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1709                 return;
1710         }
1711         spin_lock_irq(&phba->hbalock);
1712         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
1713         spin_unlock_irq(&phba->hbalock);
1714
1715         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1716                 lpfc_initial_fdisc(vport);
1717         else {
1718                 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
1719                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1720                                  "2606 No NPIV Fabric support\n");
1721         }
1722         return;
1723 }
1724
1725 /**
1726  * lpfc_start_fdiscs - send fdiscs for each vports on this port.
1727  * @phba: pointer to lpfc hba data structure.
1728  *
1729  * This function loops through the list of vports on the @phba and issues an
1730  * FDISC if possible.
1731  */
1732 void
1733 lpfc_start_fdiscs(struct lpfc_hba *phba)
1734 {
1735         struct lpfc_vport **vports;
1736         int i;
1737         LPFC_MBOXQ_t *mboxq;
1738         int rc;
1739
1740         vports = lpfc_create_vport_work_array(phba);
1741         if (vports != NULL) {
1742                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
1743                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
1744                                 continue;
1745                         /* There are no vpi for this vport */
1746                         if (vports[i]->vpi > phba->max_vpi) {
1747                                 lpfc_vport_set_state(vports[i],
1748                                                      FC_VPORT_FAILED);
1749                                 continue;
1750                         }
1751                         if (phba->fc_topology == TOPOLOGY_LOOP) {
1752                                 lpfc_vport_set_state(vports[i],
1753                                                      FC_VPORT_LINKDOWN);
1754                                 continue;
1755                         }
1756                         if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
1757                                 mboxq = mempool_alloc(phba->mbox_mem_pool,
1758                                         GFP_KERNEL);
1759                                 if (!mboxq) {
1760                                         lpfc_printf_vlog(vports[i], KERN_ERR,
1761                                         LOG_MBOX, "2607 Failed to allocate "
1762                                         "init_vpi mailbox\n");
1763                                         continue;
1764                                 }
1765                                 lpfc_init_vpi(phba, mboxq, vports[i]->vpi);
1766                                 mboxq->vport = vports[i];
1767                                 mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
1768                                 rc = lpfc_sli_issue_mbox(phba, mboxq,
1769                                         MBX_NOWAIT);
1770                                 if (rc == MBX_NOT_FINISHED) {
1771                                         lpfc_printf_vlog(vports[i], KERN_ERR,
1772                                         LOG_MBOX, "2608 Failed to issue "
1773                                         "init_vpi mailbox\n");
1774                                         mempool_free(mboxq,
1775                                                 phba->mbox_mem_pool);
1776                                 }
1777                                 continue;
1778                         }
1779                         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1780                                 lpfc_initial_fdisc(vports[i]);
1781                         else {
1782                                 lpfc_vport_set_state(vports[i],
1783                                                      FC_VPORT_NO_FABRIC_SUPP);
1784                                 lpfc_printf_vlog(vports[i], KERN_ERR,
1785                                                  LOG_ELS,
1786                                                  "0259 No NPIV "
1787                                                  "Fabric support\n");
1788                         }
1789                 }
1790         }
1791         lpfc_destroy_vport_work_array(phba, vports);
1792 }
1793
1794 void
1795 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1796 {
1797         struct lpfc_dmabuf *dmabuf = mboxq->context1;
1798         struct lpfc_vport *vport = mboxq->vport;
1799
1800         if (mboxq->u.mb.mbxStatus) {
1801                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1802                          "2018 REG_VFI mbxStatus error x%x "
1803                          "HBA state x%x\n",
1804                          mboxq->u.mb.mbxStatus, vport->port_state);
1805                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1806                         /* FLOGI failed, use loop map to make discovery list */
1807                         lpfc_disc_list_loopmap(vport);
1808                         /* Start discovery */
1809                         lpfc_disc_start(vport);
1810                         goto fail_free_mem;
1811                 }
1812                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1813                 goto fail_free_mem;
1814         }
1815         /* The VPI is implicitly registered when the VFI is registered */
1816         vport->vpi_state |= LPFC_VPI_REGISTERED;
1817
1818         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
1819                 lpfc_start_fdiscs(phba);
1820                 lpfc_do_scr_ns_plogi(phba, vport);
1821         }
1822
1823 fail_free_mem:
1824         mempool_free(mboxq, phba->mbox_mem_pool);
1825         lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
1826         kfree(dmabuf);
1827         return;
1828 }
1829
1830 static void
1831 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1832 {
1833         MAILBOX_t *mb = &pmb->u.mb;
1834         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
1835         struct lpfc_vport  *vport = pmb->vport;
1836
1837
1838         /* Check for error */
1839         if (mb->mbxStatus) {
1840                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
1841                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1842                                  "0319 READ_SPARAM mbxStatus error x%x "
1843                                  "hba state x%x>\n",
1844                                  mb->mbxStatus, vport->port_state);
1845                 lpfc_linkdown(phba);
1846                 goto out;
1847         }
1848
1849         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
1850                sizeof (struct serv_parm));
1851         if (phba->cfg_soft_wwnn)
1852                 u64_to_wwn(phba->cfg_soft_wwnn,
1853                            vport->fc_sparam.nodeName.u.wwn);
1854         if (phba->cfg_soft_wwpn)
1855                 u64_to_wwn(phba->cfg_soft_wwpn,
1856                            vport->fc_sparam.portName.u.wwn);
1857         memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
1858                sizeof(vport->fc_nodename));
1859         memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
1860                sizeof(vport->fc_portname));
1861         if (vport->port_type == LPFC_PHYSICAL_PORT) {
1862                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
1863                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
1864         }
1865
1866         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1867         kfree(mp);
1868         mempool_free(pmb, phba->mbox_mem_pool);
1869         return;
1870
1871 out:
1872         pmb->context1 = NULL;
1873         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1874         kfree(mp);
1875         lpfc_issue_clear_la(phba, vport);
1876         mempool_free(pmb, phba->mbox_mem_pool);
1877         return;
1878 }
1879
1880 static void
1881 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
1882 {
1883         struct lpfc_vport *vport = phba->pport;
1884         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
1885         int i;
1886         struct lpfc_dmabuf *mp;
1887         int rc;
1888         struct fcf_record *fcf_record;
1889
1890         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1891
1892         spin_lock_irq(&phba->hbalock);
1893         switch (la->UlnkSpeed) {
1894         case LA_1GHZ_LINK:
1895                 phba->fc_linkspeed = LA_1GHZ_LINK;
1896                 break;
1897         case LA_2GHZ_LINK:
1898                 phba->fc_linkspeed = LA_2GHZ_LINK;
1899                 break;
1900         case LA_4GHZ_LINK:
1901                 phba->fc_linkspeed = LA_4GHZ_LINK;
1902                 break;
1903         case LA_8GHZ_LINK:
1904                 phba->fc_linkspeed = LA_8GHZ_LINK;
1905                 break;
1906         case LA_10GHZ_LINK:
1907                 phba->fc_linkspeed = LA_10GHZ_LINK;
1908                 break;
1909         default:
1910                 phba->fc_linkspeed = LA_UNKNW_LINK;
1911                 break;
1912         }
1913
1914         phba->fc_topology = la->topology;
1915         phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
1916
1917         if (phba->fc_topology == TOPOLOGY_LOOP) {
1918                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
1919
1920                 /* if npiv is enabled and this adapter supports npiv log
1921                  * a message that npiv is not supported in this topology
1922                  */
1923                 if (phba->cfg_enable_npiv && phba->max_vpi)
1924                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1925                                 "1309 Link Up Event npiv not supported in loop "
1926                                 "topology\n");
1927                                 /* Get Loop Map information */
1928                 if (la->il)
1929                         vport->fc_flag |= FC_LBIT;
1930
1931                 vport->fc_myDID = la->granted_AL_PA;
1932                 i = la->un.lilpBde64.tus.f.bdeSize;
1933
1934                 if (i == 0) {
1935                         phba->alpa_map[0] = 0;
1936                 } else {
1937                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
1938                                 int numalpa, j, k;
1939                                 union {
1940                                         uint8_t pamap[16];
1941                                         struct {
1942                                                 uint32_t wd1;
1943                                                 uint32_t wd2;
1944                                                 uint32_t wd3;
1945                                                 uint32_t wd4;
1946                                         } pa;
1947                                 } un;
1948                                 numalpa = phba->alpa_map[0];
1949                                 j = 0;
1950                                 while (j < numalpa) {
1951                                         memset(un.pamap, 0, 16);
1952                                         for (k = 1; j < numalpa; k++) {
1953                                                 un.pamap[k - 1] =
1954                                                         phba->alpa_map[j + 1];
1955                                                 j++;
1956                                                 if (k == 16)
1957                                                         break;
1958                                         }
1959                                         /* Link Up Event ALPA map */
1960                                         lpfc_printf_log(phba,
1961                                                         KERN_WARNING,
1962                                                         LOG_LINK_EVENT,
1963                                                         "1304 Link Up Event "
1964                                                         "ALPA map Data: x%x "
1965                                                         "x%x x%x x%x\n",
1966                                                         un.pa.wd1, un.pa.wd2,
1967                                                         un.pa.wd3, un.pa.wd4);
1968                                 }
1969                         }
1970                 }
1971         } else {
1972                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
1973                         if (phba->max_vpi && phba->cfg_enable_npiv &&
1974                            (phba->sli_rev == 3))
1975                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
1976                 }
1977                 vport->fc_myDID = phba->fc_pref_DID;
1978                 vport->fc_flag |= FC_LBIT;
1979         }
1980         spin_unlock_irq(&phba->hbalock);
1981
1982         lpfc_linkup(phba);
1983         if (sparam_mbox) {
1984                 lpfc_read_sparam(phba, sparam_mbox, 0);
1985                 sparam_mbox->vport = vport;
1986                 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1987                 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
1988                 if (rc == MBX_NOT_FINISHED) {
1989                         mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
1990                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1991                         kfree(mp);
1992                         mempool_free(sparam_mbox, phba->mbox_mem_pool);
1993                         goto out;
1994                 }
1995         }
1996
1997         if (!(phba->hba_flag & HBA_FCOE_SUPPORT)) {
1998                 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1999                 if (!cfglink_mbox)
2000                         goto out;
2001                 vport->port_state = LPFC_LOCAL_CFG_LINK;
2002                 lpfc_config_link(phba, cfglink_mbox);
2003                 cfglink_mbox->vport = vport;
2004                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
2005                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
2006                 if (rc == MBX_NOT_FINISHED) {
2007                         mempool_free(cfglink_mbox, phba->mbox_mem_pool);
2008                         goto out;
2009                 }
2010         } else {
2011                 vport->port_state = LPFC_VPORT_UNKNOWN;
2012                 /*
2013                  * Add the driver's default FCF record at FCF index 0 now. This
2014                  * is phase 1 implementation that support FCF index 0 and driver
2015                  * defaults.
2016                  */
2017                 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
2018                         fcf_record = kzalloc(sizeof(struct fcf_record),
2019                                         GFP_KERNEL);
2020                         if (unlikely(!fcf_record)) {
2021                                 lpfc_printf_log(phba, KERN_ERR,
2022                                         LOG_MBOX | LOG_SLI,
2023                                         "2554 Could not allocate memmory for "
2024                                         "fcf record\n");
2025                                 rc = -ENODEV;
2026                                 goto out;
2027                         }
2028
2029                         lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
2030                                                 LPFC_FCOE_FCF_DEF_INDEX);
2031                         rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
2032                         if (unlikely(rc)) {
2033                                 lpfc_printf_log(phba, KERN_ERR,
2034                                         LOG_MBOX | LOG_SLI,
2035                                         "2013 Could not manually add FCF "
2036                                         "record 0, status %d\n", rc);
2037                                 rc = -ENODEV;
2038                                 kfree(fcf_record);
2039                                 goto out;
2040                         }
2041                         kfree(fcf_record);
2042                 }
2043                 /*
2044                  * The driver is expected to do FIP/FCF. Call the port
2045                  * and get the FCF Table.
2046                  */
2047                 spin_lock_irq(&phba->hbalock);
2048                 if (phba->hba_flag & FCF_DISC_INPROGRESS) {
2049                         spin_unlock_irq(&phba->hbalock);
2050                         return;
2051                 }
2052                 spin_unlock_irq(&phba->hbalock);
2053                 rc = lpfc_sli4_read_fcf_record(phba,
2054                                         LPFC_FCOE_FCF_GET_FIRST);
2055                 if (rc)
2056                         goto out;
2057         }
2058
2059         return;
2060 out:
2061         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2062         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2063                          "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
2064                          vport->port_state, sparam_mbox, cfglink_mbox);
2065         lpfc_issue_clear_la(phba, vport);
2066         return;
2067 }
2068
2069 static void
2070 lpfc_enable_la(struct lpfc_hba *phba)
2071 {
2072         uint32_t control;
2073         struct lpfc_sli *psli = &phba->sli;
2074         spin_lock_irq(&phba->hbalock);
2075         psli->sli_flag |= LPFC_PROCESS_LA;
2076         if (phba->sli_rev <= LPFC_SLI_REV3) {
2077                 control = readl(phba->HCregaddr);
2078                 control |= HC_LAINT_ENA;
2079                 writel(control, phba->HCregaddr);
2080                 readl(phba->HCregaddr); /* flush */
2081         }
2082         spin_unlock_irq(&phba->hbalock);
2083 }
2084
2085 static void
2086 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
2087 {
2088         lpfc_linkdown(phba);
2089         lpfc_enable_la(phba);
2090         lpfc_unregister_unused_fcf(phba);
2091         /* turn on Link Attention interrupts - no CLEAR_LA needed */
2092 }
2093
2094
2095 /*
2096  * This routine handles processing a READ_LA mailbox
2097  * command upon completion. It is setup in the LPFC_MBOXQ
2098  * as the completion routine when the command is
2099  * handed off to the SLI layer.
2100  */
2101 void
2102 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2103 {
2104         struct lpfc_vport *vport = pmb->vport;
2105         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2106         READ_LA_VAR *la;
2107         MAILBOX_t *mb = &pmb->u.mb;
2108         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2109
2110         /* Unblock ELS traffic */
2111         phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
2112         /* Check for error */
2113         if (mb->mbxStatus) {
2114                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
2115                                 "1307 READ_LA mbox error x%x state x%x\n",
2116                                 mb->mbxStatus, vport->port_state);
2117                 lpfc_mbx_issue_link_down(phba);
2118                 phba->link_state = LPFC_HBA_ERROR;
2119                 goto lpfc_mbx_cmpl_read_la_free_mbuf;
2120         }
2121
2122         la = (READ_LA_VAR *) &pmb->u.mb.un.varReadLA;
2123
2124         memcpy(&phba->alpa_map[0], mp->virt, 128);
2125
2126         spin_lock_irq(shost->host_lock);
2127         if (la->pb)
2128                 vport->fc_flag |= FC_BYPASSED_MODE;
2129         else
2130                 vport->fc_flag &= ~FC_BYPASSED_MODE;
2131         spin_unlock_irq(shost->host_lock);
2132
2133         if ((phba->fc_eventTag  < la->eventTag) ||
2134             (phba->fc_eventTag == la->eventTag)) {
2135                 phba->fc_stat.LinkMultiEvent++;
2136                 if (la->attType == AT_LINK_UP)
2137                         if (phba->fc_eventTag != 0)
2138                                 lpfc_linkdown(phba);
2139         }
2140
2141         phba->fc_eventTag = la->eventTag;
2142         if (la->mm)
2143                 phba->sli.sli_flag |= LPFC_MENLO_MAINT;
2144         else
2145                 phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
2146
2147         phba->link_events++;
2148         if (la->attType == AT_LINK_UP && (!la->mm)) {
2149                 phba->fc_stat.LinkUp++;
2150                 if (phba->link_flag & LS_LOOPBACK_MODE) {
2151                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2152                                         "1306 Link Up Event in loop back mode "
2153                                         "x%x received Data: x%x x%x x%x x%x\n",
2154                                         la->eventTag, phba->fc_eventTag,
2155                                         la->granted_AL_PA, la->UlnkSpeed,
2156                                         phba->alpa_map[0]);
2157                 } else {
2158                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2159                                         "1303 Link Up Event x%x received "
2160                                         "Data: x%x x%x x%x x%x x%x x%x %d\n",
2161                                         la->eventTag, phba->fc_eventTag,
2162                                         la->granted_AL_PA, la->UlnkSpeed,
2163                                         phba->alpa_map[0],
2164                                         la->mm, la->fa,
2165                                         phba->wait_4_mlo_maint_flg);
2166                 }
2167                 lpfc_mbx_process_link_up(phba, la);
2168         } else if (la->attType == AT_LINK_DOWN) {
2169                 phba->fc_stat.LinkDown++;
2170                 if (phba->link_flag & LS_LOOPBACK_MODE) {
2171                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2172                                 "1308 Link Down Event in loop back mode "
2173                                 "x%x received "
2174                                 "Data: x%x x%x x%x\n",
2175                                 la->eventTag, phba->fc_eventTag,
2176                                 phba->pport->port_state, vport->fc_flag);
2177                 }
2178                 else {
2179                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2180                                 "1305 Link Down Event x%x received "
2181                                 "Data: x%x x%x x%x x%x x%x\n",
2182                                 la->eventTag, phba->fc_eventTag,
2183                                 phba->pport->port_state, vport->fc_flag,
2184                                 la->mm, la->fa);
2185                 }
2186                 lpfc_mbx_issue_link_down(phba);
2187         }
2188         if (la->mm && la->attType == AT_LINK_UP) {
2189                 if (phba->link_state != LPFC_LINK_DOWN) {
2190                         phba->fc_stat.LinkDown++;
2191                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2192                                 "1312 Link Down Event x%x received "
2193                                 "Data: x%x x%x x%x\n",
2194                                 la->eventTag, phba->fc_eventTag,
2195                                 phba->pport->port_state, vport->fc_flag);
2196                         lpfc_mbx_issue_link_down(phba);
2197                 } else
2198                         lpfc_enable_la(phba);
2199
2200                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2201                                 "1310 Menlo Maint Mode Link up Event x%x rcvd "
2202                                 "Data: x%x x%x x%x\n",
2203                                 la->eventTag, phba->fc_eventTag,
2204                                 phba->pport->port_state, vport->fc_flag);
2205                 /*
2206                  * The cmnd that triggered this will be waiting for this
2207                  * signal.
2208                  */
2209                 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
2210                 if (phba->wait_4_mlo_maint_flg) {
2211                         phba->wait_4_mlo_maint_flg = 0;
2212                         wake_up_interruptible(&phba->wait_4_mlo_m_q);
2213                 }
2214         }
2215
2216         if (la->fa) {
2217                 if (la->mm)
2218                         lpfc_issue_clear_la(phba, vport);
2219                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
2220                                 "1311 fa %d\n", la->fa);
2221         }
2222
2223 lpfc_mbx_cmpl_read_la_free_mbuf:
2224         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2225         kfree(mp);
2226         mempool_free(pmb, phba->mbox_mem_pool);
2227         return;
2228 }
2229
2230 /*
2231  * This routine handles processing a REG_LOGIN mailbox
2232  * command upon completion. It is setup in the LPFC_MBOXQ
2233  * as the completion routine when the command is
2234  * handed off to the SLI layer.
2235  */
2236 void
2237 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2238 {
2239         struct lpfc_vport  *vport = pmb->vport;
2240         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2241         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2242
2243         pmb->context1 = NULL;
2244
2245         /* Good status, call state machine */
2246         lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
2247         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2248         kfree(mp);
2249         mempool_free(pmb, phba->mbox_mem_pool);
2250         /* decrement the node reference count held for this callback
2251          * function.
2252          */
2253         lpfc_nlp_put(ndlp);
2254
2255         return;
2256 }
2257
2258 static void
2259 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2260 {
2261         MAILBOX_t *mb = &pmb->u.mb;
2262         struct lpfc_vport *vport = pmb->vport;
2263         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2264
2265         switch (mb->mbxStatus) {
2266         case 0x0011:
2267         case 0x0020:
2268         case 0x9700:
2269                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2270                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
2271                                  mb->mbxStatus);
2272                 break;
2273         }
2274         spin_lock_irq(&phba->hbalock);
2275         vport->vpi_state &= ~LPFC_VPI_REGISTERED;
2276         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
2277         spin_unlock_irq(&phba->hbalock);
2278         vport->unreg_vpi_cmpl = VPORT_OK;
2279         mempool_free(pmb, phba->mbox_mem_pool);
2280         /*
2281          * This shost reference might have been taken at the beginning of
2282          * lpfc_vport_delete()
2283          */
2284         if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport))
2285                 scsi_host_put(shost);
2286 }
2287
2288 int
2289 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
2290 {
2291         struct lpfc_hba  *phba = vport->phba;
2292         LPFC_MBOXQ_t *mbox;
2293         int rc;
2294
2295         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2296         if (!mbox)
2297                 return 1;
2298
2299         lpfc_unreg_vpi(phba, vport->vpi, mbox);
2300         mbox->vport = vport;
2301         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
2302         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2303         if (rc == MBX_NOT_FINISHED) {
2304                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
2305                                  "1800 Could not issue unreg_vpi\n");
2306                 mempool_free(mbox, phba->mbox_mem_pool);
2307                 vport->unreg_vpi_cmpl = VPORT_ERROR;
2308                 return rc;
2309         }
2310         return 0;
2311 }
2312
2313 static void
2314 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2315 {
2316         struct lpfc_vport *vport = pmb->vport;
2317         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2318         MAILBOX_t *mb = &pmb->u.mb;
2319
2320         switch (mb->mbxStatus) {
2321         case 0x0011:
2322         case 0x9601:
2323         case 0x9602:
2324                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2325                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
2326                                  mb->mbxStatus);
2327                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2328                 spin_lock_irq(shost->host_lock);
2329                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2330                 spin_unlock_irq(shost->host_lock);
2331                 vport->fc_myDID = 0;
2332                 goto out;
2333         }
2334
2335         vport->vpi_state |= LPFC_VPI_REGISTERED;
2336         vport->num_disc_nodes = 0;
2337         /* go thru NPR list and issue ELS PLOGIs */
2338         if (vport->fc_npr_cnt)
2339                 lpfc_els_disc_plogi(vport);
2340
2341         if (!vport->num_disc_nodes) {
2342                 spin_lock_irq(shost->host_lock);
2343                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2344                 spin_unlock_irq(shost->host_lock);
2345                 lpfc_can_disctmo(vport);
2346         }
2347         vport->port_state = LPFC_VPORT_READY;
2348
2349 out:
2350         mempool_free(pmb, phba->mbox_mem_pool);
2351         return;
2352 }
2353
2354 /**
2355  * lpfc_create_static_vport - Read HBA config region to create static vports.
2356  * @phba: pointer to lpfc hba data structure.
2357  *
2358  * This routine issue a DUMP mailbox command for config region 22 to get
2359  * the list of static vports to be created. The function create vports
2360  * based on the information returned from the HBA.
2361  **/
2362 void
2363 lpfc_create_static_vport(struct lpfc_hba *phba)
2364 {
2365         LPFC_MBOXQ_t *pmb = NULL;
2366         MAILBOX_t *mb;
2367         struct static_vport_info *vport_info;
2368         int rc = 0, i;
2369         struct fc_vport_identifiers vport_id;
2370         struct fc_vport *new_fc_vport;
2371         struct Scsi_Host *shost;
2372         struct lpfc_vport *vport;
2373         uint16_t offset = 0;
2374         uint8_t *vport_buff;
2375         struct lpfc_dmabuf *mp;
2376         uint32_t byte_count = 0;
2377
2378         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2379         if (!pmb) {
2380                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2381                                 "0542 lpfc_create_static_vport failed to"
2382                                 " allocate mailbox memory\n");
2383                 return;
2384         }
2385
2386         mb = &pmb->u.mb;
2387
2388         vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
2389         if (!vport_info) {
2390                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2391                                 "0543 lpfc_create_static_vport failed to"
2392                                 " allocate vport_info\n");
2393                 mempool_free(pmb, phba->mbox_mem_pool);
2394                 return;
2395         }
2396
2397         vport_buff = (uint8_t *) vport_info;
2398         do {
2399                 if (lpfc_dump_static_vport(phba, pmb, offset))
2400                         goto out;
2401
2402                 pmb->vport = phba->pport;
2403                 rc = lpfc_sli_issue_mbox_wait(phba, pmb, LPFC_MBOX_TMO);
2404
2405                 if ((rc != MBX_SUCCESS) || mb->mbxStatus) {
2406                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2407                                 "0544 lpfc_create_static_vport failed to"
2408                                 " issue dump mailbox command ret 0x%x "
2409                                 "status 0x%x\n",
2410                                 rc, mb->mbxStatus);
2411                         goto out;
2412                 }
2413
2414                 if (phba->sli_rev == LPFC_SLI_REV4) {
2415                         byte_count = pmb->u.mqe.un.mb_words[5];
2416                         mp = (struct lpfc_dmabuf *) pmb->context2;
2417                         if (byte_count > sizeof(struct static_vport_info) -
2418                                         offset)
2419                                 byte_count = sizeof(struct static_vport_info)
2420                                         - offset;
2421                         memcpy(vport_buff + offset, mp->virt, byte_count);
2422                         offset += byte_count;
2423                 } else {
2424                         if (mb->un.varDmp.word_cnt >
2425                                 sizeof(struct static_vport_info) - offset)
2426                                 mb->un.varDmp.word_cnt =
2427                                         sizeof(struct static_vport_info)
2428                                                 - offset;
2429                         byte_count = mb->un.varDmp.word_cnt;
2430                         lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
2431                                 vport_buff + offset,
2432                                 byte_count);
2433
2434                         offset += byte_count;
2435                 }
2436
2437         } while (byte_count &&
2438                 offset < sizeof(struct static_vport_info));
2439
2440
2441         if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
2442                 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
2443                         != VPORT_INFO_REV)) {
2444                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2445                         "0545 lpfc_create_static_vport bad"
2446                         " information header 0x%x 0x%x\n",
2447                         le32_to_cpu(vport_info->signature),
2448                         le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK);
2449
2450                 goto out;
2451         }
2452
2453         shost = lpfc_shost_from_vport(phba->pport);
2454
2455         for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
2456                 memset(&vport_id, 0, sizeof(vport_id));
2457                 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
2458                 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
2459                 if (!vport_id.port_name || !vport_id.node_name)
2460                         continue;
2461
2462                 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
2463                 vport_id.vport_type = FC_PORTTYPE_NPIV;
2464                 vport_id.disable = false;
2465                 new_fc_vport = fc_vport_create(shost, 0, &vport_id);
2466
2467                 if (!new_fc_vport) {
2468                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2469                                 "0546 lpfc_create_static_vport failed to"
2470                                 " create vport\n");
2471                         continue;
2472                 }
2473
2474                 vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
2475                 vport->vport_flag |= STATIC_VPORT;
2476         }
2477
2478 out:
2479         kfree(vport_info);
2480         if (rc != MBX_TIMEOUT) {
2481                 if (pmb->context2) {
2482                         mp = (struct lpfc_dmabuf *) pmb->context2;
2483                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2484                         kfree(mp);
2485                 }
2486                 mempool_free(pmb, phba->mbox_mem_pool);
2487         }
2488
2489         return;
2490 }
2491
2492 /*
2493  * This routine handles processing a Fabric REG_LOGIN mailbox
2494  * command upon completion. It is setup in the LPFC_MBOXQ
2495  * as the completion routine when the command is
2496  * handed off to the SLI layer.
2497  */
2498 void
2499 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2500 {
2501         struct lpfc_vport *vport = pmb->vport;
2502         MAILBOX_t *mb = &pmb->u.mb;
2503         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2504         struct lpfc_nodelist *ndlp;
2505
2506         ndlp = (struct lpfc_nodelist *) pmb->context2;
2507         pmb->context1 = NULL;
2508         pmb->context2 = NULL;
2509         if (mb->mbxStatus) {
2510                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2511                                  "0258 Register Fabric login error: 0x%x\n",
2512                                  mb->mbxStatus);
2513                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2514                 kfree(mp);
2515                 mempool_free(pmb, phba->mbox_mem_pool);
2516
2517                 if (phba->fc_topology == TOPOLOGY_LOOP) {
2518                         /* FLOGI failed, use loop map to make discovery list */
2519                         lpfc_disc_list_loopmap(vport);
2520
2521                         /* Start discovery */
2522                         lpfc_disc_start(vport);
2523                         /* Decrement the reference count to ndlp after the
2524                          * reference to the ndlp are done.
2525                          */
2526                         lpfc_nlp_put(ndlp);
2527                         return;
2528                 }
2529
2530                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2531                 /* Decrement the reference count to ndlp after the reference
2532                  * to the ndlp are done.
2533                  */
2534                 lpfc_nlp_put(ndlp);
2535                 return;
2536         }
2537
2538         ndlp->nlp_rpi = mb->un.varWords[0];
2539         ndlp->nlp_flag |= NLP_RPI_VALID;
2540         ndlp->nlp_type |= NLP_FABRIC;
2541         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2542
2543         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
2544                 lpfc_start_fdiscs(phba);
2545                 lpfc_do_scr_ns_plogi(phba, vport);
2546         }
2547
2548         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2549         kfree(mp);
2550         mempool_free(pmb, phba->mbox_mem_pool);
2551
2552         /* Drop the reference count from the mbox at the end after
2553          * all the current reference to the ndlp have been done.
2554          */
2555         lpfc_nlp_put(ndlp);
2556         return;
2557 }
2558
2559 /*
2560  * This routine handles processing a NameServer REG_LOGIN mailbox
2561  * command upon completion. It is setup in the LPFC_MBOXQ
2562  * as the completion routine when the command is
2563  * handed off to the SLI layer.
2564  */
2565 void
2566 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2567 {
2568         MAILBOX_t *mb = &pmb->u.mb;
2569         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2570         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2571         struct lpfc_vport *vport = pmb->vport;
2572
2573         if (mb->mbxStatus) {
2574 out:
2575                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2576                                  "0260 Register NameServer error: 0x%x\n",
2577                                  mb->mbxStatus);
2578                 /* decrement the node reference count held for this
2579                  * callback function.
2580                  */
2581                 lpfc_nlp_put(ndlp);
2582                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2583                 kfree(mp);
2584                 mempool_free(pmb, phba->mbox_mem_pool);
2585
2586                 /* If no other thread is using the ndlp, free it */
2587                 lpfc_nlp_not_used(ndlp);
2588
2589                 if (phba->fc_topology == TOPOLOGY_LOOP) {
2590                         /*
2591                          * RegLogin failed, use loop map to make discovery
2592                          * list
2593                          */
2594                         lpfc_disc_list_loopmap(vport);
2595
2596                         /* Start discovery */
2597                         lpfc_disc_start(vport);
2598                         return;
2599                 }
2600                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2601                 return;
2602         }
2603
2604         pmb->context1 = NULL;
2605
2606         ndlp->nlp_rpi = mb->un.varWords[0];
2607         ndlp->nlp_flag |= NLP_RPI_VALID;
2608         ndlp->nlp_type |= NLP_FABRIC;
2609         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2610
2611         if (vport->port_state < LPFC_VPORT_READY) {
2612                 /* Link up discovery requires Fabric registration. */
2613                 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
2614                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
2615                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
2616                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
2617                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
2618
2619                 /* Issue SCR just before NameServer GID_FT Query */
2620                 lpfc_issue_els_scr(vport, SCR_DID, 0);
2621         }
2622
2623         vport->fc_ns_retry = 0;
2624         /* Good status, issue CT Request to NameServer */
2625         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
2626                 /* Cannot issue NameServer Query, so finish up discovery */
2627                 goto out;
2628         }
2629
2630         /* decrement the node reference count held for this
2631          * callback function.
2632          */
2633         lpfc_nlp_put(ndlp);
2634         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2635         kfree(mp);
2636         mempool_free(pmb, phba->mbox_mem_pool);
2637
2638         return;
2639 }
2640
2641 static void
2642 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2643 {
2644         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2645         struct fc_rport  *rport;
2646         struct lpfc_rport_data *rdata;
2647         struct fc_rport_identifiers rport_ids;
2648         struct lpfc_hba  *phba = vport->phba;
2649
2650         /* Remote port has reappeared. Re-register w/ FC transport */
2651         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
2652         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
2653         rport_ids.port_id = ndlp->nlp_DID;
2654         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
2655
2656         /*
2657          * We leave our node pointer in rport->dd_data when we unregister a
2658          * FCP target port.  But fc_remote_port_add zeros the space to which
2659          * rport->dd_data points.  So, if we're reusing a previously
2660          * registered port, drop the reference that we took the last time we
2661          * registered the port.
2662          */
2663         if (ndlp->rport && ndlp->rport->dd_data &&
2664             ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
2665                 lpfc_nlp_put(ndlp);
2666
2667         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
2668                 "rport add:       did:x%x flg:x%x type x%x",
2669                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
2670
2671         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
2672         if (!rport || !get_device(&rport->dev)) {
2673                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
2674                            "Warning: fc_remote_port_add failed\n");
2675                 return;
2676         }
2677
2678         /* initialize static port data */
2679         rport->maxframe_size = ndlp->nlp_maxframe;
2680         rport->supported_classes = ndlp->nlp_class_sup;
2681         rdata = rport->dd_data;
2682         rdata->pnode = lpfc_nlp_get(ndlp);
2683
2684         if (ndlp->nlp_type & NLP_FCP_TARGET)
2685                 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
2686         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
2687                 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
2688
2689
2690         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
2691                 fc_remote_port_rolechg(rport, rport_ids.roles);
2692
2693         if ((rport->scsi_target_id != -1) &&
2694             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
2695                 ndlp->nlp_sid = rport->scsi_target_id;
2696         }
2697         return;
2698 }
2699
2700 static void
2701 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
2702 {
2703         struct fc_rport *rport = ndlp->rport;
2704
2705         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
2706                 "rport delete:    did:x%x flg:x%x type x%x",
2707                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
2708
2709         fc_remote_port_delete(rport);
2710
2711         return;
2712 }
2713
2714 static void
2715 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
2716 {
2717         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2718
2719         spin_lock_irq(shost->host_lock);
2720         switch (state) {
2721         case NLP_STE_UNUSED_NODE:
2722                 vport->fc_unused_cnt += count;
2723                 break;
2724         case NLP_STE_PLOGI_ISSUE:
2725                 vport->fc_plogi_cnt += count;
2726                 break;
2727         case NLP_STE_ADISC_ISSUE:
2728                 vport->fc_adisc_cnt += count;
2729                 break;
2730         case NLP_STE_REG_LOGIN_ISSUE:
2731                 vport->fc_reglogin_cnt += count;
2732                 break;
2733         case NLP_STE_PRLI_ISSUE:
2734                 vport->fc_prli_cnt += count;
2735                 break;
2736         case NLP_STE_UNMAPPED_NODE:
2737                 vport->fc_unmap_cnt += count;
2738                 break;
2739         case NLP_STE_MAPPED_NODE:
2740                 vport->fc_map_cnt += count;
2741                 break;
2742         case NLP_STE_NPR_NODE:
2743                 vport->fc_npr_cnt += count;
2744                 break;
2745         }
2746         spin_unlock_irq(shost->host_lock);
2747 }
2748
2749 static void
2750 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2751                        int old_state, int new_state)
2752 {
2753         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2754
2755         if (new_state == NLP_STE_UNMAPPED_NODE) {
2756                 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
2757                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
2758                 ndlp->nlp_type |= NLP_FC_NODE;
2759         }
2760         if (new_state == NLP_STE_MAPPED_NODE)
2761                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
2762         if (new_state == NLP_STE_NPR_NODE)
2763                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
2764
2765         /* Transport interface */
2766         if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
2767                             old_state == NLP_STE_UNMAPPED_NODE)) {
2768                 vport->phba->nport_event_cnt++;
2769                 lpfc_unregister_remote_port(ndlp);
2770         }
2771
2772         if (new_state ==  NLP_STE_MAPPED_NODE ||
2773             new_state == NLP_STE_UNMAPPED_NODE) {
2774                 vport->phba->nport_event_cnt++;
2775                 /*
2776                  * Tell the fc transport about the port, if we haven't
2777                  * already. If we have, and it's a scsi entity, be
2778                  * sure to unblock any attached scsi devices
2779                  */
2780                 lpfc_register_remote_port(vport, ndlp);
2781         }
2782         if ((new_state ==  NLP_STE_MAPPED_NODE) &&
2783                 (vport->stat_data_enabled)) {
2784                 /*
2785                  * A new target is discovered, if there is no buffer for
2786                  * statistical data collection allocate buffer.
2787                  */
2788                 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
2789                                          sizeof(struct lpfc_scsicmd_bkt),
2790                                          GFP_KERNEL);
2791
2792                 if (!ndlp->lat_data)
2793                         lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
2794                                 "0286 lpfc_nlp_state_cleanup failed to "
2795                                 "allocate statistical data buffer DID "
2796                                 "0x%x\n", ndlp->nlp_DID);
2797         }
2798         /*
2799          * if we added to Mapped list, but the remote port
2800          * registration failed or assigned a target id outside
2801          * our presentable range - move the node to the
2802          * Unmapped List
2803          */
2804         if (new_state == NLP_STE_MAPPED_NODE &&
2805             (!ndlp->rport ||
2806              ndlp->rport->scsi_target_id == -1 ||
2807              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
2808                 spin_lock_irq(shost->host_lock);
2809                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
2810                 spin_unlock_irq(shost->host_lock);
2811                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2812         }
2813 }
2814
2815 static char *
2816 lpfc_nlp_state_name(char *buffer, size_t size, int state)
2817 {
2818         static char *states[] = {
2819                 [NLP_STE_UNUSED_NODE] = "UNUSED",
2820                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
2821                 [NLP_STE_ADISC_ISSUE] = "ADISC",
2822                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
2823                 [NLP_STE_PRLI_ISSUE] = "PRLI",
2824                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
2825                 [NLP_STE_MAPPED_NODE] = "MAPPED",
2826                 [NLP_STE_NPR_NODE] = "NPR",
2827         };
2828
2829         if (state < NLP_STE_MAX_STATE && states[state])
2830                 strlcpy(buffer, states[state], size);
2831         else
2832                 snprintf(buffer, size, "unknown (%d)", state);
2833         return buffer;
2834 }
2835
2836 void
2837 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2838                    int state)
2839 {
2840         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2841         int  old_state = ndlp->nlp_state;
2842         char name1[16], name2[16];
2843
2844         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2845                          "0904 NPort state transition x%06x, %s -> %s\n",
2846                          ndlp->nlp_DID,
2847                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
2848                          lpfc_nlp_state_name(name2, sizeof(name2), state));
2849
2850         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2851                 "node statechg    did:x%x old:%d ste:%d",
2852                 ndlp->nlp_DID, old_state, state);
2853
2854         if (old_state == NLP_STE_NPR_NODE &&
2855             state != NLP_STE_NPR_NODE)
2856                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2857         if (old_state == NLP_STE_UNMAPPED_NODE) {
2858                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
2859                 ndlp->nlp_type &= ~NLP_FC_NODE;
2860         }
2861
2862         if (list_empty(&ndlp->nlp_listp)) {
2863                 spin_lock_irq(shost->host_lock);
2864                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
2865                 spin_unlock_irq(shost->host_lock);
2866         } else if (old_state)
2867                 lpfc_nlp_counters(vport, old_state, -1);
2868
2869         ndlp->nlp_state = state;
2870         lpfc_nlp_counters(vport, state, 1);
2871         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
2872 }
2873
2874 void
2875 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2876 {
2877         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2878
2879         if (list_empty(&ndlp->nlp_listp)) {
2880                 spin_lock_irq(shost->host_lock);
2881                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
2882                 spin_unlock_irq(shost->host_lock);
2883         }
2884 }
2885
2886 void
2887 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2888 {
2889         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2890
2891         lpfc_cancel_retry_delay_tmo(vport, ndlp);
2892         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
2893                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
2894         spin_lock_irq(shost->host_lock);
2895         list_del_init(&ndlp->nlp_listp);
2896         spin_unlock_irq(shost->host_lock);
2897         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
2898                                 NLP_STE_UNUSED_NODE);
2899 }
2900
2901 static void
2902 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2903 {
2904         lpfc_cancel_retry_delay_tmo(vport, ndlp);
2905         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
2906                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
2907         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
2908                                 NLP_STE_UNUSED_NODE);
2909 }
2910 /**
2911  * lpfc_initialize_node - Initialize all fields of node object
2912  * @vport: Pointer to Virtual Port object.
2913  * @ndlp: Pointer to FC node object.
2914  * @did: FC_ID of the node.
2915  *
2916  * This function is always called when node object need to be initialized.
2917  * It initializes all the fields of the node object. Although the reference
2918  * to phba from @ndlp can be obtained indirectly through it's reference to
2919  * @vport, a direct reference to phba is taken here by @ndlp. This is due
2920  * to the life-span of the @ndlp might go beyond the existence of @vport as
2921  * the final release of ndlp is determined by its reference count. And, the
2922  * operation on @ndlp needs the reference to phba.
2923  **/
2924 static inline void
2925 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2926         uint32_t did)
2927 {
2928         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
2929         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
2930         init_timer(&ndlp->nlp_delayfunc);
2931         ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
2932         ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
2933         ndlp->nlp_DID = did;
2934         ndlp->vport = vport;
2935         ndlp->phba = vport->phba;
2936         ndlp->nlp_sid = NLP_NO_SID;
2937         kref_init(&ndlp->kref);
2938         NLP_INT_NODE_ACT(ndlp);
2939         atomic_set(&ndlp->cmd_pending, 0);
2940         ndlp->cmd_qdepth = LPFC_MAX_TGT_QDEPTH;
2941 }
2942
2943 struct lpfc_nodelist *
2944 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2945                  int state)
2946 {
2947         struct lpfc_hba *phba = vport->phba;
2948         uint32_t did;
2949         unsigned long flags;
2950
2951         if (!ndlp)
2952                 return NULL;
2953
2954         spin_lock_irqsave(&phba->ndlp_lock, flags);
2955         /* The ndlp should not be in memory free mode */
2956         if (NLP_CHK_FREE_REQ(ndlp)) {
2957                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
2958                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2959                                 "0277 lpfc_enable_node: ndlp:x%p "
2960                                 "usgmap:x%x refcnt:%d\n",
2961                                 (void *)ndlp, ndlp->nlp_usg_map,
2962                                 atomic_read(&ndlp->kref.refcount));
2963                 return NULL;
2964         }
2965         /* The ndlp should not already be in active mode */
2966         if (NLP_CHK_NODE_ACT(ndlp)) {
2967                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
2968                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2969                                 "0278 lpfc_enable_node: ndlp:x%p "
2970                                 "usgmap:x%x refcnt:%d\n",
2971                                 (void *)ndlp, ndlp->nlp_usg_map,
2972                                 atomic_read(&ndlp->kref.refcount));
2973                 return NULL;
2974         }
2975
2976         /* Keep the original DID */
2977         did = ndlp->nlp_DID;
2978
2979         /* re-initialize ndlp except of ndlp linked list pointer */
2980         memset((((char *)ndlp) + sizeof (struct list_head)), 0,
2981                 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
2982         lpfc_initialize_node(vport, ndlp, did);
2983
2984         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
2985
2986         if (state != NLP_STE_UNUSED_NODE)
2987                 lpfc_nlp_set_state(vport, ndlp, state);
2988
2989         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2990                 "node enable:       did:x%x",
2991                 ndlp->nlp_DID, 0, 0);
2992         return ndlp;
2993 }
2994
2995 void
2996 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2997 {
2998         /*
2999          * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
3000          * be used if we wish to issue the "last" lpfc_nlp_put() to remove
3001          * the ndlp from the vport. The ndlp marked as UNUSED on the list
3002          * until ALL other outstanding threads have completed. We check
3003          * that the ndlp not already in the UNUSED state before we proceed.
3004          */
3005         if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
3006                 return;
3007         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
3008         lpfc_nlp_put(ndlp);
3009         return;
3010 }
3011
3012 /*
3013  * Start / ReStart rescue timer for Discovery / RSCN handling
3014  */
3015 void
3016 lpfc_set_disctmo(struct lpfc_vport *vport)
3017 {
3018         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3019         struct lpfc_hba  *phba = vport->phba;
3020         uint32_t tmo;
3021
3022         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
3023                 /* For FAN, timeout should be greater than edtov */
3024                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
3025         } else {
3026                 /* Normal discovery timeout should be > than ELS/CT timeout
3027                  * FC spec states we need 3 * ratov for CT requests
3028                  */
3029                 tmo = ((phba->fc_ratov * 3) + 3);
3030         }
3031
3032
3033         if (!timer_pending(&vport->fc_disctmo)) {
3034                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3035                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
3036                         tmo, vport->port_state, vport->fc_flag);
3037         }
3038
3039         mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
3040         spin_lock_irq(shost->host_lock);
3041         vport->fc_flag |= FC_DISC_TMO;
3042         spin_unlock_irq(shost->host_lock);
3043
3044         /* Start Discovery Timer state <hba_state> */
3045         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3046                          "0247 Start Discovery Timer state x%x "
3047                          "Data: x%x x%lx x%x x%x\n",
3048                          vport->port_state, tmo,
3049                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
3050                          vport->fc_adisc_cnt);
3051
3052         return;
3053 }
3054
3055 /*
3056  * Cancel rescue timer for Discovery / RSCN handling
3057  */
3058 int
3059 lpfc_can_disctmo(struct lpfc_vport *vport)
3060 {
3061         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3062         unsigned long iflags;
3063
3064         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3065                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
3066                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
3067
3068         /* Turn off discovery timer if its running */
3069         if (vport->fc_flag & FC_DISC_TMO) {
3070                 spin_lock_irqsave(shost->host_lock, iflags);
3071                 vport->fc_flag &= ~FC_DISC_TMO;
3072                 spin_unlock_irqrestore(shost->host_lock, iflags);
3073                 del_timer_sync(&vport->fc_disctmo);
3074                 spin_lock_irqsave(&vport->work_port_lock, iflags);
3075                 vport->work_port_events &= ~WORKER_DISC_TMO;
3076                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
3077         }
3078
3079         /* Cancel Discovery Timer state <hba_state> */
3080         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3081                          "0248 Cancel Discovery Timer state x%x "
3082                          "Data: x%x x%x x%x\n",
3083                          vport->port_state, vport->fc_flag,
3084                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
3085         return 0;
3086 }
3087
3088 /*
3089  * Check specified ring for outstanding IOCB on the SLI queue
3090  * Return true if iocb matches the specified nport
3091  */
3092 int
3093 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
3094                     struct lpfc_sli_ring *pring,
3095                     struct lpfc_iocbq *iocb,
3096                     struct lpfc_nodelist *ndlp)
3097 {
3098         struct lpfc_sli *psli = &phba->sli;
3099         IOCB_t *icmd = &iocb->iocb;
3100         struct lpfc_vport    *vport = ndlp->vport;
3101
3102         if (iocb->vport != vport)
3103                 return 0;
3104
3105         if (pring->ringno == LPFC_ELS_RING) {
3106                 switch (icmd->ulpCommand) {
3107                 case CMD_GEN_REQUEST64_CR:
3108                         if (iocb->context_un.ndlp == ndlp)
3109                                 return 1;
3110                 case CMD_ELS_REQUEST64_CR:
3111                         if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
3112                                 return 1;
3113                 case CMD_XMIT_ELS_RSP64_CX:
3114                         if (iocb->context1 == (uint8_t *) ndlp)
3115                                 return 1;
3116                 }
3117         } else if (pring->ringno == psli->extra_ring) {
3118
3119         } else if (pring->ringno == psli->fcp_ring) {
3120                 /* Skip match check if waiting to relogin to FCP target */
3121                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
3122                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
3123                         return 0;
3124                 }
3125                 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
3126                         return 1;
3127                 }
3128         } else if (pring->ringno == psli->next_ring) {
3129
3130         }
3131         return 0;
3132 }
3133
3134 /*
3135  * Free resources / clean up outstanding I/Os
3136  * associated with nlp_rpi in the LPFC_NODELIST entry.
3137  */
3138 static int
3139 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
3140 {
3141         LIST_HEAD(completions);
3142         struct lpfc_sli *psli;
3143         struct lpfc_sli_ring *pring;
3144         struct lpfc_iocbq *iocb, *next_iocb;
3145         uint32_t i;
3146
3147         lpfc_fabric_abort_nport(ndlp);
3148
3149         /*
3150          * Everything that matches on txcmplq will be returned
3151          * by firmware with a no rpi error.
3152          */
3153         psli = &phba->sli;
3154         if (ndlp->nlp_flag & NLP_RPI_VALID) {
3155                 /* Now process each ring */
3156                 for (i = 0; i < psli->num_rings; i++) {
3157                         pring = &psli->ring[i];
3158
3159                         spin_lock_irq(&phba->hbalock);
3160                         list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
3161                                                  list) {
3162                                 /*
3163                                  * Check to see if iocb matches the nport we are
3164                                  * looking for
3165                                  */
3166                                 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
3167                                                          ndlp))) {
3168                                         /* It matches, so deque and call compl
3169                                            with an error */
3170                                         list_move_tail(&iocb->list,
3171                                                        &completions);
3172                                         pring->txq_cnt--;
3173                                 }
3174                         }
3175                         spin_unlock_irq(&phba->hbalock);
3176                 }
3177         }
3178
3179         /* Cancel all the IOCBs from the completions list */
3180         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
3181                               IOERR_SLI_ABORTED);
3182
3183         return 0;
3184 }
3185
3186 /*
3187  * Free rpi associated with LPFC_NODELIST entry.
3188  * This routine is called from lpfc_freenode(), when we are removing
3189  * a LPFC_NODELIST entry. It is also called if the driver initiates a
3190  * LOGO that completes successfully, and we are waiting to PLOGI back
3191  * to the remote NPort. In addition, it is called after we receive
3192  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
3193  * we are waiting to PLOGI back to the remote NPort.
3194  */
3195 int
3196 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3197 {
3198         struct lpfc_hba *phba = vport->phba;
3199         LPFC_MBOXQ_t    *mbox;
3200         int rc;
3201
3202         if (ndlp->nlp_flag & NLP_RPI_VALID) {
3203                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3204                 if (mbox) {
3205                         lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
3206                         mbox->vport = vport;
3207                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3208                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3209                         if (rc == MBX_NOT_FINISHED)
3210                                 mempool_free(mbox, phba->mbox_mem_pool);
3211                 }
3212                 lpfc_no_rpi(phba, ndlp);
3213                 ndlp->nlp_rpi = 0;
3214                 ndlp->nlp_flag &= ~NLP_RPI_VALID;
3215                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
3216                 return 1;
3217         }
3218         return 0;
3219 }
3220
3221 void
3222 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
3223 {
3224         struct lpfc_hba  *phba  = vport->phba;
3225         LPFC_MBOXQ_t     *mbox;
3226         int rc;
3227
3228         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3229         if (mbox) {
3230                 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
3231                 mbox->vport = vport;
3232                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3233                 mbox->context1 = NULL;
3234                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
3235                 if (rc != MBX_TIMEOUT)
3236                         mempool_free(mbox, phba->mbox_mem_pool);
3237
3238                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
3239                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
3240                                 "1836 Could not issue "
3241                                 "unreg_login(all_rpis) status %d\n", rc);
3242         }
3243 }
3244
3245 void
3246 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
3247 {
3248         struct lpfc_hba  *phba  = vport->phba;
3249         LPFC_MBOXQ_t     *mbox;
3250         int rc;
3251
3252         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3253         if (mbox) {
3254                 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
3255                 mbox->vport = vport;
3256                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3257                 mbox->context1 = NULL;
3258                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
3259                 if (rc != MBX_TIMEOUT)
3260                         mempool_free(mbox, phba->mbox_mem_pool);
3261
3262                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
3263                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
3264                                          "1815 Could not issue "
3265                                          "unreg_did (default rpis) status %d\n",
3266                                          rc);
3267         }
3268 }
3269
3270 /*
3271  * Free resources associated with LPFC_NODELIST entry
3272  * so it can be freed.
3273  */
3274 static int
3275 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3276 {
3277         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3278         struct lpfc_hba  *phba = vport->phba;
3279         LPFC_MBOXQ_t *mb, *nextmb;
3280         struct lpfc_dmabuf *mp;
3281
3282         /* Cleanup node for NPort <nlp_DID> */
3283         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3284                          "0900 Cleanup node for NPort x%x "
3285                          "Data: x%x x%x x%x\n",
3286                          ndlp->nlp_DID, ndlp->nlp_flag,
3287                          ndlp->nlp_state, ndlp->nlp_rpi);
3288         if (NLP_CHK_FREE_REQ(ndlp)) {
3289                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3290                                 "0280 lpfc_cleanup_node: ndlp:x%p "
3291                                 "usgmap:x%x refcnt:%d\n",
3292                                 (void *)ndlp, ndlp->nlp_usg_map,
3293                                 atomic_read(&ndlp->kref.refcount));
3294                 lpfc_dequeue_node(vport, ndlp);
3295         } else {
3296                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3297                                 "0281 lpfc_cleanup_node: ndlp:x%p "
3298                                 "usgmap:x%x refcnt:%d\n",
3299                                 (void *)ndlp, ndlp->nlp_usg_map,
3300                                 atomic_read(&ndlp->kref.refcount));
3301                 lpfc_disable_node(vport, ndlp);
3302         }
3303
3304         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
3305         if ((mb = phba->sli.mbox_active)) {
3306                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
3307                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
3308                         mb->context2 = NULL;
3309                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3310                 }
3311         }
3312
3313         spin_lock_irq(&phba->hbalock);
3314         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
3315                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
3316                     (ndlp == (struct lpfc_nodelist *) mb->context2)) {
3317                         mp = (struct lpfc_dmabuf *) (mb->context1);
3318                         if (mp) {
3319                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
3320                                 kfree(mp);
3321                         }
3322                         list_del(&mb->list);
3323                         mempool_free(mb, phba->mbox_mem_pool);
3324                         /* We shall not invoke the lpfc_nlp_put to decrement
3325                          * the ndlp reference count as we are in the process
3326                          * of lpfc_nlp_release.
3327                          */
3328                 }
3329         }
3330         spin_unlock_irq(&phba->hbalock);
3331
3332         lpfc_els_abort(phba, ndlp);
3333
3334         spin_lock_irq(shost->host_lock);
3335         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
3336         spin_unlock_irq(shost->host_lock);
3337
3338         ndlp->nlp_last_elscmd = 0;
3339         del_timer_sync(&ndlp->nlp_delayfunc);
3340
3341         list_del_init(&ndlp->els_retry_evt.evt_listp);
3342         list_del_init(&ndlp->dev_loss_evt.evt_listp);
3343
3344         lpfc_unreg_rpi(vport, ndlp);
3345
3346         return 0;
3347 }
3348
3349 /*
3350  * Check to see if we can free the nlp back to the freelist.
3351  * If we are in the middle of using the nlp in the discovery state
3352  * machine, defer the free till we reach the end of the state machine.
3353  */
3354 static void
3355 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3356 {
3357         struct lpfc_hba  *phba = vport->phba;
3358         struct lpfc_rport_data *rdata;
3359         LPFC_MBOXQ_t *mbox;
3360         int rc;
3361
3362         lpfc_cancel_retry_delay_tmo(vport, ndlp);
3363         if ((ndlp->nlp_flag & NLP_DEFER_RM) &&
3364             !(ndlp->nlp_flag & NLP_RPI_VALID)) {
3365                 /* For this case we need to cleanup the default rpi
3366                  * allocated by the firmware.
3367                  */
3368                 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
3369                         != NULL) {
3370                         rc = lpfc_reg_rpi(phba, vport->vpi, ndlp->nlp_DID,
3371                             (uint8_t *) &vport->fc_sparam, mbox, 0);
3372                         if (rc) {
3373                                 mempool_free(mbox, phba->mbox_mem_pool);
3374                         }
3375                         else {
3376                                 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
3377                                 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
3378                                 mbox->vport = vport;
3379                                 mbox->context2 = NULL;
3380                                 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3381                                 if (rc == MBX_NOT_FINISHED) {
3382                                         mempool_free(mbox, phba->mbox_mem_pool);
3383                                 }
3384                         }
3385                 }
3386         }
3387         lpfc_cleanup_node(vport, ndlp);
3388
3389         /*
3390          * We can get here with a non-NULL ndlp->rport because when we
3391          * unregister a rport we don't break the rport/node linkage.  So if we
3392          * do, make sure we don't leaving any dangling pointers behind.
3393          */
3394         if (ndlp->rport) {
3395                 rdata = ndlp->rport->dd_data;
3396                 rdata->pnode = NULL;
3397                 ndlp->rport = NULL;
3398         }
3399 }
3400
3401 static int
3402 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3403               uint32_t did)
3404 {
3405         D_ID mydid, ndlpdid, matchdid;
3406
3407         if (did == Bcast_DID)
3408                 return 0;
3409
3410         /* First check for Direct match */
3411         if (ndlp->nlp_DID == did)
3412                 return 1;
3413
3414         /* Next check for area/domain identically equals 0 match */
3415         mydid.un.word = vport->fc_myDID;
3416         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
3417                 return 0;
3418         }
3419
3420         matchdid.un.word = did;
3421         ndlpdid.un.word = ndlp->nlp_DID;
3422         if (matchdid.un.b.id == ndlpdid.un.b.id) {
3423                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
3424                     (mydid.un.b.area == matchdid.un.b.area)) {
3425                         if ((ndlpdid.un.b.domain == 0) &&
3426                             (ndlpdid.un.b.area == 0)) {
3427                                 if (ndlpdid.un.b.id)
3428                                         return 1;
3429                         }
3430                         return 0;
3431                 }
3432
3433                 matchdid.un.word = ndlp->nlp_DID;
3434                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
3435                     (mydid.un.b.area == ndlpdid.un.b.area)) {
3436                         if ((matchdid.un.b.domain == 0) &&
3437                             (matchdid.un.b.area == 0)) {
3438                                 if (matchdid.un.b.id)
3439                                         return 1;
3440                         }
3441                 }
3442         }
3443         return 0;
3444 }
3445
3446 /* Search for a nodelist entry */
3447 static struct lpfc_nodelist *
3448 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
3449 {
3450         struct lpfc_nodelist *ndlp;
3451         uint32_t data1;
3452
3453         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
3454                 if (lpfc_matchdid(vport, ndlp, did)) {
3455                         data1 = (((uint32_t) ndlp->nlp_state << 24) |
3456                                  ((uint32_t) ndlp->nlp_xri << 16) |
3457                                  ((uint32_t) ndlp->nlp_type << 8) |
3458                                  ((uint32_t) ndlp->nlp_rpi & 0xff));
3459                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3460                                          "0929 FIND node DID "
3461                                          "Data: x%p x%x x%x x%x\n",
3462                                          ndlp, ndlp->nlp_DID,
3463                                          ndlp->nlp_flag, data1);
3464                         return ndlp;
3465                 }
3466         }
3467
3468         /* FIND node did <did> NOT FOUND */
3469         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3470                          "0932 FIND node did x%x NOT FOUND.\n", did);
3471         return NULL;
3472 }
3473
3474 struct lpfc_nodelist *
3475 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
3476 {
3477         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3478         struct lpfc_nodelist *ndlp;
3479
3480         spin_lock_irq(shost->host_lock);
3481         ndlp = __lpfc_findnode_did(vport, did);
3482         spin_unlock_irq(shost->host_lock);
3483         return ndlp;
3484 }
3485
3486 struct lpfc_nodelist *
3487 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
3488 {
3489         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3490         struct lpfc_nodelist *ndlp;
3491
3492         ndlp = lpfc_findnode_did(vport, did);
3493         if (!ndlp) {
3494                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
3495                     lpfc_rscn_payload_check(vport, did) == 0)
3496                         return NULL;
3497                 ndlp = (struct lpfc_nodelist *)
3498                      mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
3499                 if (!ndlp)
3500                         return NULL;
3501                 lpfc_nlp_init(vport, ndlp, did);
3502                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
3503                 spin_lock_irq(shost->host_lock);
3504                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
3505                 spin_unlock_irq(shost->host_lock);
3506                 return ndlp;
3507         } else if (!NLP_CHK_NODE_ACT(ndlp)) {
3508                 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
3509                 if (!ndlp)
3510                         return NULL;
3511                 spin_lock_irq(shost->host_lock);
3512                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
3513                 spin_unlock_irq(shost->host_lock);
3514                 return ndlp;
3515         }
3516
3517         if ((vport->fc_flag & FC_RSCN_MODE) &&
3518             !(vport->fc_flag & FC_NDISC_ACTIVE)) {
3519                 if (lpfc_rscn_payload_check(vport, did)) {
3520                         /* If we've already recieved a PLOGI from this NPort
3521                          * we don't need to try to discover it again.
3522                          */
3523                         if (ndlp->nlp_flag & NLP_RCV_PLOGI)
3524                                 return NULL;
3525
3526                         /* Since this node is marked for discovery,
3527                          * delay timeout is not needed.
3528                          */
3529                         lpfc_cancel_retry_delay_tmo(vport, ndlp);
3530                         spin_lock_irq(shost->host_lock);
3531                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
3532                         spin_unlock_irq(shost->host_lock);
3533                 } else
3534                         ndlp = NULL;
3535         } else {
3536                 /* If we've already recieved a PLOGI from this NPort,
3537                  * or we are already in the process of discovery on it,
3538                  * we don't need to try to discover it again.
3539                  */
3540                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
3541                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
3542                     ndlp->nlp_flag & NLP_RCV_PLOGI)
3543                         return NULL;
3544                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
3545                 spin_lock_irq(shost->host_lock);
3546                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
3547                 spin_unlock_irq(shost->host_lock);
3548         }
3549         return ndlp;
3550 }
3551
3552 /* Build a list of nodes to discover based on the loopmap */
3553 void
3554 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
3555 {
3556         struct lpfc_hba  *phba = vport->phba;
3557         int j;
3558         uint32_t alpa, index;
3559
3560         if (!lpfc_is_link_up(phba))
3561                 return;
3562
3563         if (phba->fc_topology != TOPOLOGY_LOOP)
3564                 return;
3565
3566         /* Check for loop map present or not */
3567         if (phba->alpa_map[0]) {
3568                 for (j = 1; j <= phba->alpa_map[0]; j++) {
3569                         alpa = phba->alpa_map[j];
3570                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
3571                                 continue;
3572                         lpfc_setup_disc_node(vport, alpa);
3573                 }
3574         } else {
3575                 /* No alpamap, so try all alpa's */
3576                 for (j = 0; j < FC_MAXLOOP; j++) {
3577                         /* If cfg_scan_down is set, start from highest
3578                          * ALPA (0xef) to lowest (0x1).
3579                          */
3580                         if (vport->cfg_scan_down)
3581                                 index = j;
3582                         else
3583                                 index = FC_MAXLOOP - j - 1;
3584                         alpa = lpfcAlpaArray[index];
3585                         if ((vport->fc_myDID & 0xff) == alpa)
3586                                 continue;
3587                         lpfc_setup_disc_node(vport, alpa);
3588                 }
3589         }
3590         return;
3591 }
3592
3593 void
3594 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
3595 {
3596         LPFC_MBOXQ_t *mbox;
3597         struct lpfc_sli *psli = &phba->sli;
3598         struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
3599         struct lpfc_sli_ring *fcp_ring   = &psli->ring[psli->fcp_ring];
3600         struct lpfc_sli_ring *next_ring  = &psli->ring[psli->next_ring];
3601         int  rc;
3602
3603         /*
3604          * if it's not a physical port or if we already send
3605          * clear_la then don't send it.
3606          */
3607         if ((phba->link_state >= LPFC_CLEAR_LA) ||
3608             (vport->port_type != LPFC_PHYSICAL_PORT) ||
3609                 (phba->sli_rev == LPFC_SLI_REV4))
3610                 return;
3611
3612                         /* Link up discovery */
3613         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
3614                 phba->link_state = LPFC_CLEAR_LA;
3615                 lpfc_clear_la(phba, mbox);
3616                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
3617                 mbox->vport = vport;
3618                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3619                 if (rc == MBX_NOT_FINISHED) {
3620                         mempool_free(mbox, phba->mbox_mem_pool);
3621                         lpfc_disc_flush_list(vport);
3622                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
3623                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
3624                         next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
3625                         phba->link_state = LPFC_HBA_ERROR;
3626                 }
3627         }
3628 }
3629
3630 /* Reg_vpi to tell firmware to resume normal operations */
3631 void
3632 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
3633 {
3634         LPFC_MBOXQ_t *regvpimbox;
3635
3636         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3637         if (regvpimbox) {
3638                 lpfc_reg_vpi(vport, regvpimbox);
3639                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
3640                 regvpimbox->vport = vport;
3641                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
3642                                         == MBX_NOT_FINISHED) {
3643                         mempool_free(regvpimbox, phba->mbox_mem_pool);
3644                 }
3645         }
3646 }
3647
3648 /* Start Link up / RSCN discovery on NPR nodes */
3649 void
3650 lpfc_disc_start(struct lpfc_vport *vport)
3651 {
3652         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3653         struct lpfc_hba  *phba = vport->phba;
3654         uint32_t num_sent;
3655         uint32_t clear_la_pending;
3656         int did_changed;
3657
3658         if (!lpfc_is_link_up(phba))
3659                 return;
3660
3661         if (phba->link_state == LPFC_CLEAR_LA)
3662                 clear_la_pending = 1;
3663         else
3664                 clear_la_pending = 0;
3665
3666         if (vport->port_state < LPFC_VPORT_READY)
3667                 vport->port_state = LPFC_DISC_AUTH;
3668
3669         lpfc_set_disctmo(vport);
3670
3671         if (vport->fc_prevDID == vport->fc_myDID)
3672                 did_changed = 0;
3673         else
3674                 did_changed = 1;
3675
3676         vport->fc_prevDID = vport->fc_myDID;
3677         vport->num_disc_nodes = 0;
3678
3679         /* Start Discovery state <hba_state> */
3680         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3681                          "0202 Start Discovery hba state x%x "
3682                          "Data: x%x x%x x%x\n",
3683                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
3684                          vport->fc_adisc_cnt);
3685
3686         /* First do ADISCs - if any */
3687         num_sent = lpfc_els_disc_adisc(vport);
3688
3689         if (num_sent)
3690                 return;
3691
3692         /*
3693          * For SLI3, cmpl_reg_vpi will set port_state to READY, and
3694          * continue discovery.
3695          */
3696         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
3697             !(vport->fc_flag & FC_PT2PT) &&
3698             !(vport->fc_flag & FC_RSCN_MODE) &&
3699             (phba->sli_rev < LPFC_SLI_REV4)) {
3700                 lpfc_issue_reg_vpi(phba, vport);
3701                 return;
3702         }
3703
3704         /*
3705          * For SLI2, we need to set port_state to READY and continue
3706          * discovery.
3707          */
3708         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
3709                 /* If we get here, there is nothing to ADISC */
3710                 if (vport->port_type == LPFC_PHYSICAL_PORT)
3711                         lpfc_issue_clear_la(phba, vport);
3712
3713                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
3714                         vport->num_disc_nodes = 0;
3715                         /* go thru NPR nodes and issue ELS PLOGIs */
3716                         if (vport->fc_npr_cnt)
3717                                 lpfc_els_disc_plogi(vport);
3718
3719                         if (!vport->num_disc_nodes) {
3720                                 spin_lock_irq(shost->host_lock);
3721                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
3722                                 spin_unlock_irq(shost->host_lock);
3723                                 lpfc_can_disctmo(vport);
3724                         }
3725                 }
3726                 vport->port_state = LPFC_VPORT_READY;
3727         } else {
3728                 /* Next do PLOGIs - if any */
3729                 num_sent = lpfc_els_disc_plogi(vport);
3730
3731                 if (num_sent)
3732                         return;
3733
3734                 if (vport->fc_flag & FC_RSCN_MODE) {
3735                         /* Check to see if more RSCNs came in while we
3736                          * were processing this one.
3737                          */
3738                         if ((vport->fc_rscn_id_cnt == 0) &&
3739                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
3740                                 spin_lock_irq(shost->host_lock);
3741                                 vport->fc_flag &= ~FC_RSCN_MODE;
3742                                 spin_unlock_irq(shost->host_lock);
3743                                 lpfc_can_disctmo(vport);
3744                         } else
3745                                 lpfc_els_handle_rscn(vport);
3746                 }
3747         }
3748         return;
3749 }
3750
3751 /*
3752  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
3753  *  ring the match the sppecified nodelist.
3754  */
3755 static void
3756 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
3757 {
3758         LIST_HEAD(completions);
3759         struct lpfc_sli *psli;
3760         IOCB_t     *icmd;
3761         struct lpfc_iocbq    *iocb, *next_iocb;
3762         struct lpfc_sli_ring *pring;
3763
3764         psli = &phba->sli;
3765         pring = &psli->ring[LPFC_ELS_RING];
3766
3767         /* Error matching iocb on txq or txcmplq
3768          * First check the txq.
3769          */
3770         spin_lock_irq(&phba->hbalock);
3771         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
3772                 if (iocb->context1 != ndlp) {
3773                         continue;
3774                 }
3775                 icmd = &iocb->iocb;
3776                 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
3777                     (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
3778
3779                         list_move_tail(&iocb->list, &completions);
3780                         pring->txq_cnt--;
3781                 }
3782         }
3783
3784         /* Next check the txcmplq */
3785         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
3786                 if (iocb->context1 != ndlp) {
3787                         continue;
3788                 }
3789                 icmd = &iocb->iocb;
3790                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
3791                     icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
3792                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
3793                 }
3794         }
3795         spin_unlock_irq(&phba->hbalock);
3796
3797         /* Cancel all the IOCBs from the completions list */
3798         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
3799                               IOERR_SLI_ABORTED);
3800 }
3801
3802 static void
3803 lpfc_disc_flush_list(struct lpfc_vport *vport)
3804 {
3805         struct lpfc_nodelist *ndlp, *next_ndlp;
3806         struct lpfc_hba *phba = vport->phba;
3807
3808         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
3809                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
3810                                          nlp_listp) {
3811                         if (!NLP_CHK_NODE_ACT(ndlp))
3812                                 continue;
3813                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
3814                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
3815                                 lpfc_free_tx(phba, ndlp);
3816                         }
3817                 }
3818         }
3819 }
3820
3821 void
3822 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
3823 {
3824         lpfc_els_flush_rscn(vport);
3825         lpfc_els_flush_cmd(vport);
3826         lpfc_disc_flush_list(vport);
3827 }
3828
3829 /*****************************************************************************/
3830 /*
3831  * NAME:     lpfc_disc_timeout
3832  *
3833  * FUNCTION: Fibre Channel driver discovery timeout routine.
3834  *
3835  * EXECUTION ENVIRONMENT: interrupt only
3836  *
3837  * CALLED FROM:
3838  *      Timer function
3839  *
3840  * RETURNS:
3841  *      none
3842  */
3843 /*****************************************************************************/
3844 void
3845 lpfc_disc_timeout(unsigned long ptr)
3846 {
3847         struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
3848         struct lpfc_hba   *phba = vport->phba;
3849         uint32_t tmo_posted;
3850         unsigned long flags = 0;
3851
3852         if (unlikely(!phba))
3853                 return;
3854
3855         spin_lock_irqsave(&vport->work_port_lock, flags);
3856         tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
3857         if (!tmo_posted)
3858                 vport->work_port_events |= WORKER_DISC_TMO;
3859         spin_unlock_irqrestore(&vport->work_port_lock, flags);
3860
3861         if (!tmo_posted)
3862                 lpfc_worker_wake_up(phba);
3863         return;
3864 }
3865
3866 static void
3867 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
3868 {
3869         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3870         struct lpfc_hba  *phba = vport->phba;
3871         struct lpfc_sli  *psli = &phba->sli;
3872         struct lpfc_nodelist *ndlp, *next_ndlp;
3873         LPFC_MBOXQ_t *initlinkmbox;
3874         int rc, clrlaerr = 0;
3875
3876         if (!(vport->fc_flag & FC_DISC_TMO))
3877                 return;
3878
3879         spin_lock_irq(shost->host_lock);
3880         vport->fc_flag &= ~FC_DISC_TMO;
3881         spin_unlock_irq(shost->host_lock);
3882
3883         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3884                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
3885                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
3886
3887         switch (vport->port_state) {
3888
3889         case LPFC_LOCAL_CFG_LINK:
3890         /* port_state is identically  LPFC_LOCAL_CFG_LINK while waiting for
3891          * FAN
3892          */
3893                                 /* FAN timeout */
3894                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
3895                                  "0221 FAN timeout\n");
3896                 /* Start discovery by sending FLOGI, clean up old rpis */
3897                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
3898                                          nlp_listp) {
3899                         if (!NLP_CHK_NODE_ACT(ndlp))
3900                                 continue;
3901                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
3902                                 continue;
3903                         if (ndlp->nlp_type & NLP_FABRIC) {
3904                                 /* Clean up the ndlp on Fabric connections */
3905                                 lpfc_drop_node(vport, ndlp);
3906
3907                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
3908                                 /* Fail outstanding IO now since device
3909                                  * is marked for PLOGI.
3910                                  */
3911                                 lpfc_unreg_rpi(vport, ndlp);
3912                         }
3913                 }
3914                 if (vport->port_state != LPFC_FLOGI) {
3915                         lpfc_initial_flogi(vport);
3916                         return;
3917                 }
3918                 break;
3919
3920         case LPFC_FDISC:
3921         case LPFC_FLOGI:
3922         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
3923                 /* Initial FLOGI timeout */
3924                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3925                                  "0222 Initial %s timeout\n",
3926                                  vport->vpi ? "FDISC" : "FLOGI");
3927
3928                 /* Assume no Fabric and go on with discovery.
3929                  * Check for outstanding ELS FLOGI to abort.
3930                  */
3931
3932                 /* FLOGI failed, so just use loop map to make discovery list */
3933                 lpfc_disc_list_loopmap(vport);
3934
3935                 /* Start discovery */
3936                 lpfc_disc_start(vport);
3937                 break;
3938
3939         case LPFC_FABRIC_CFG_LINK:
3940         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
3941            NameServer login */
3942                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3943                                  "0223 Timeout while waiting for "
3944                                  "NameServer login\n");
3945                 /* Next look for NameServer ndlp */
3946                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
3947                 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
3948                         lpfc_els_abort(phba, ndlp);
3949
3950                 /* ReStart discovery */
3951                 goto restart_disc;
3952
3953         case LPFC_NS_QRY:
3954         /* Check for wait for NameServer Rsp timeout */
3955                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3956                                  "0224 NameServer Query timeout "
3957                                  "Data: x%x x%x\n",
3958                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
3959
3960                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
3961                         /* Try it one more time */
3962                         vport->fc_ns_retry++;
3963                         rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
3964                                          vport->fc_ns_retry, 0);
3965                         if (rc == 0)
3966                                 break;
3967                 }
3968                 vport->fc_ns_retry = 0;
3969
3970 restart_disc:
3971                 /*
3972                  * Discovery is over.
3973                  * set port_state to PORT_READY if SLI2.
3974                  * cmpl_reg_vpi will set port_state to READY for SLI3.
3975                  */
3976                 if (phba->sli_rev < LPFC_SLI_REV4) {
3977                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
3978                                 lpfc_issue_reg_vpi(phba, vport);
3979                         else  { /* NPIV Not enabled */
3980                                 lpfc_issue_clear_la(phba, vport);
3981                                 vport->port_state = LPFC_VPORT_READY;
3982                         }
3983                 }
3984
3985                 /* Setup and issue mailbox INITIALIZE LINK command */
3986                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3987                 if (!initlinkmbox) {
3988                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3989                                          "0206 Device Discovery "
3990                                          "completion error\n");
3991                         phba->link_state = LPFC_HBA_ERROR;
3992                         break;
3993                 }
3994
3995                 lpfc_linkdown(phba);
3996                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
3997                                phba->cfg_link_speed);
3998                 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
3999                 initlinkmbox->vport = vport;
4000                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4001                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
4002                 lpfc_set_loopback_flag(phba);
4003                 if (rc == MBX_NOT_FINISHED)
4004                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
4005
4006                 break;
4007
4008         case LPFC_DISC_AUTH:
4009         /* Node Authentication timeout */
4010                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4011                                  "0227 Node Authentication timeout\n");
4012                 lpfc_disc_flush_list(vport);
4013
4014                 /*
4015                  * set port_state to PORT_READY if SLI2.
4016                  * cmpl_reg_vpi will set port_state to READY for SLI3.
4017                  */
4018                 if (phba->sli_rev < LPFC_SLI_REV4) {
4019                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
4020                                 lpfc_issue_reg_vpi(phba, vport);
4021                         else  { /* NPIV Not enabled */
4022                                 lpfc_issue_clear_la(phba, vport);
4023                                 vport->port_state = LPFC_VPORT_READY;
4024                         }
4025                 }
4026                 break;
4027
4028         case LPFC_VPORT_READY:
4029                 if (vport->fc_flag & FC_RSCN_MODE) {
4030                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4031                                          "0231 RSCN timeout Data: x%x "
4032                                          "x%x\n",
4033                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
4034
4035                         /* Cleanup any outstanding ELS commands */
4036                         lpfc_els_flush_cmd(vport);
4037
4038                         lpfc_els_flush_rscn(vport);
4039                         lpfc_disc_flush_list(vport);
4040                 }
4041                 break;
4042
4043         default:
4044                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4045                                  "0273 Unexpected discovery timeout, "
4046                                  "vport State x%x\n", vport->port_state);
4047                 break;
4048         }
4049
4050         switch (phba->link_state) {
4051         case LPFC_CLEAR_LA:
4052                                 /* CLEAR LA timeout */
4053                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4054                                  "0228 CLEAR LA timeout\n");
4055                 clrlaerr = 1;
4056                 break;
4057
4058         case LPFC_LINK_UP:
4059                 lpfc_issue_clear_la(phba, vport);
4060                 /* Drop thru */
4061         case LPFC_LINK_UNKNOWN:
4062         case LPFC_WARM_START:
4063         case LPFC_INIT_START:
4064         case LPFC_INIT_MBX_CMDS:
4065         case LPFC_LINK_DOWN:
4066         case LPFC_HBA_ERROR:
4067                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4068                                  "0230 Unexpected timeout, hba link "
4069                                  "state x%x\n", phba->link_state);
4070                 clrlaerr = 1;
4071                 break;
4072
4073         case LPFC_HBA_READY:
4074                 break;
4075         }
4076
4077         if (clrlaerr) {
4078                 lpfc_disc_flush_list(vport);
4079                 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
4080                 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
4081                 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
4082                 vport->port_state = LPFC_VPORT_READY;
4083         }
4084
4085         return;
4086 }
4087
4088 /*
4089  * This routine handles processing a NameServer REG_LOGIN mailbox
4090  * command upon completion. It is setup in the LPFC_MBOXQ
4091  * as the completion routine when the command is
4092  * handed off to the SLI layer.
4093  */
4094 void
4095 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4096 {
4097         MAILBOX_t *mb = &pmb->u.mb;
4098         struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *) (pmb->context1);
4099         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
4100         struct lpfc_vport    *vport = pmb->vport;
4101
4102         pmb->context1 = NULL;
4103
4104         ndlp->nlp_rpi = mb->un.varWords[0];
4105         ndlp->nlp_flag |= NLP_RPI_VALID;
4106         ndlp->nlp_type |= NLP_FABRIC;
4107         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4108
4109         /*
4110          * Start issuing Fabric-Device Management Interface (FDMI) command to
4111          * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
4112          * fdmi-on=2 (supporting RPA/hostnmae)
4113          */
4114
4115         if (vport->cfg_fdmi_on == 1)
4116                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
4117         else
4118                 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
4119
4120         /* decrement the node reference count held for this callback
4121          * function.
4122          */
4123         lpfc_nlp_put(ndlp);
4124         lpfc_mbuf_free(phba, mp->virt, mp->phys);
4125         kfree(mp);
4126         mempool_free(pmb, phba->mbox_mem_pool);
4127
4128         return;
4129 }
4130
4131 static int
4132 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
4133 {
4134         uint16_t *rpi = param;
4135
4136         return ndlp->nlp_rpi == *rpi;
4137 }
4138
4139 static int
4140 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
4141 {
4142         return memcmp(&ndlp->nlp_portname, param,
4143                       sizeof(ndlp->nlp_portname)) == 0;
4144 }
4145
4146 static struct lpfc_nodelist *
4147 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
4148 {
4149         struct lpfc_nodelist *ndlp;
4150
4151         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
4152                 if (filter(ndlp, param))
4153                         return ndlp;
4154         }
4155         return NULL;
4156 }
4157
4158 /*
4159  * This routine looks up the ndlp lists for the given RPI. If rpi found it
4160  * returns the node list element pointer else return NULL.
4161  */
4162 struct lpfc_nodelist *
4163 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
4164 {
4165         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
4166 }
4167
4168 /*
4169  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
4170  * returns the node element list pointer else return NULL.
4171  */
4172 struct lpfc_nodelist *
4173 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
4174 {
4175         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4176         struct lpfc_nodelist *ndlp;
4177
4178         spin_lock_irq(shost->host_lock);
4179         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
4180         spin_unlock_irq(shost->host_lock);
4181         return ndlp;
4182 }
4183
4184 void
4185 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4186               uint32_t did)
4187 {
4188         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
4189
4190         lpfc_initialize_node(vport, ndlp, did);
4191         INIT_LIST_HEAD(&ndlp->nlp_listp);
4192
4193         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4194                 "node init:       did:x%x",
4195                 ndlp->nlp_DID, 0, 0);
4196
4197         return;
4198 }
4199
4200 /* This routine releases all resources associated with a specifc NPort's ndlp
4201  * and mempool_free's the nodelist.
4202  */
4203 static void
4204 lpfc_nlp_release(struct kref *kref)
4205 {
4206         struct lpfc_hba *phba;
4207         unsigned long flags;
4208         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
4209                                                   kref);
4210
4211         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4212                 "node release:    did:x%x flg:x%x type:x%x",
4213                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4214
4215         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
4216                         "0279 lpfc_nlp_release: ndlp:x%p "
4217                         "usgmap:x%x refcnt:%d\n",
4218                         (void *)ndlp, ndlp->nlp_usg_map,
4219                         atomic_read(&ndlp->kref.refcount));
4220
4221         /* remove ndlp from action. */
4222         lpfc_nlp_remove(ndlp->vport, ndlp);
4223
4224         /* clear the ndlp active flag for all release cases */
4225         phba = ndlp->phba;
4226         spin_lock_irqsave(&phba->ndlp_lock, flags);
4227         NLP_CLR_NODE_ACT(ndlp);
4228         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4229
4230         /* free ndlp memory for final ndlp release */
4231         if (NLP_CHK_FREE_REQ(ndlp)) {
4232                 kfree(ndlp->lat_data);
4233                 mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
4234         }
4235 }
4236
4237 /* This routine bumps the reference count for a ndlp structure to ensure
4238  * that one discovery thread won't free a ndlp while another discovery thread
4239  * is using it.
4240  */
4241 struct lpfc_nodelist *
4242 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
4243 {
4244         struct lpfc_hba *phba;
4245         unsigned long flags;
4246
4247         if (ndlp) {
4248                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4249                         "node get:        did:x%x flg:x%x refcnt:x%x",
4250                         ndlp->nlp_DID, ndlp->nlp_flag,
4251                         atomic_read(&ndlp->kref.refcount));
4252                 /* The check of ndlp usage to prevent incrementing the
4253                  * ndlp reference count that is in the process of being
4254                  * released.
4255                  */
4256                 phba = ndlp->phba;
4257                 spin_lock_irqsave(&phba->ndlp_lock, flags);
4258                 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
4259                         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4260                         lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
4261                                 "0276 lpfc_nlp_get: ndlp:x%p "
4262                                 "usgmap:x%x refcnt:%d\n",
4263                                 (void *)ndlp, ndlp->nlp_usg_map,
4264                                 atomic_read(&ndlp->kref.refcount));
4265                         return NULL;
4266                 } else
4267                         kref_get(&ndlp->kref);
4268                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4269         }
4270         return ndlp;
4271 }
4272
4273 /* This routine decrements the reference count for a ndlp structure. If the
4274  * count goes to 0, this indicates the the associated nodelist should be
4275  * freed. Returning 1 indicates the ndlp resource has been released; on the
4276  * other hand, returning 0 indicates the ndlp resource has not been released
4277  * yet.
4278  */
4279 int
4280 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
4281 {
4282         struct lpfc_hba *phba;
4283         unsigned long flags;
4284
4285         if (!ndlp)
4286                 return 1;
4287
4288         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4289         "node put:        did:x%x flg:x%x refcnt:x%x",
4290                 ndlp->nlp_DID, ndlp->nlp_flag,
4291                 atomic_read(&ndlp->kref.refcount));
4292         phba = ndlp->phba;
4293         spin_lock_irqsave(&phba->ndlp_lock, flags);
4294         /* Check the ndlp memory free acknowledge flag to avoid the
4295          * possible race condition that kref_put got invoked again
4296          * after previous one has done ndlp memory free.
4297          */
4298         if (NLP_CHK_FREE_ACK(ndlp)) {
4299                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4300                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
4301                                 "0274 lpfc_nlp_put: ndlp:x%p "
4302                                 "usgmap:x%x refcnt:%d\n",
4303                                 (void *)ndlp, ndlp->nlp_usg_map,
4304                                 atomic_read(&ndlp->kref.refcount));
4305                 return 1;
4306         }
4307         /* Check the ndlp inactivate log flag to avoid the possible
4308          * race condition that kref_put got invoked again after ndlp
4309          * is already in inactivating state.
4310          */
4311         if (NLP_CHK_IACT_REQ(ndlp)) {
4312                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4313                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
4314                                 "0275 lpfc_nlp_put: ndlp:x%p "
4315                                 "usgmap:x%x refcnt:%d\n",
4316                                 (void *)ndlp, ndlp->nlp_usg_map,
4317                                 atomic_read(&ndlp->kref.refcount));
4318                 return 1;
4319         }
4320         /* For last put, mark the ndlp usage flags to make sure no
4321          * other kref_get and kref_put on the same ndlp shall get
4322          * in between the process when the final kref_put has been
4323          * invoked on this ndlp.
4324          */
4325         if (atomic_read(&ndlp->kref.refcount) == 1) {
4326                 /* Indicate ndlp is put to inactive state. */
4327                 NLP_SET_IACT_REQ(ndlp);
4328                 /* Acknowledge ndlp memory free has been seen. */
4329                 if (NLP_CHK_FREE_REQ(ndlp))
4330                         NLP_SET_FREE_ACK(ndlp);
4331         }
4332         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4333         /* Note, the kref_put returns 1 when decrementing a reference
4334          * count that was 1, it invokes the release callback function,
4335          * but it still left the reference count as 1 (not actually
4336          * performs the last decrementation). Otherwise, it actually
4337          * decrements the reference count and returns 0.
4338          */
4339         return kref_put(&ndlp->kref, lpfc_nlp_release);
4340 }
4341
4342 /* This routine free's the specified nodelist if it is not in use
4343  * by any other discovery thread. This routine returns 1 if the
4344  * ndlp has been freed. A return value of 0 indicates the ndlp is
4345  * not yet been released.
4346  */
4347 int
4348 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
4349 {
4350         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4351                 "node not used:   did:x%x flg:x%x refcnt:x%x",
4352                 ndlp->nlp_DID, ndlp->nlp_flag,
4353                 atomic_read(&ndlp->kref.refcount));
4354         if (atomic_read(&ndlp->kref.refcount) == 1)
4355                 if (lpfc_nlp_put(ndlp))
4356                         return 1;
4357         return 0;
4358 }
4359
4360 /**
4361  * lpfc_fcf_inuse - Check if FCF can be unregistered.
4362  * @phba: Pointer to hba context object.
4363  *
4364  * This function iterate through all FC nodes associated
4365  * will all vports to check if there is any node with
4366  * fc_rports associated with it. If there is an fc_rport
4367  * associated with the node, then the node is either in
4368  * discovered state or its devloss_timer is pending.
4369  */
4370 static int
4371 lpfc_fcf_inuse(struct lpfc_hba *phba)
4372 {
4373         struct lpfc_vport **vports;
4374         int i, ret = 0;
4375         struct lpfc_nodelist *ndlp;
4376         struct Scsi_Host  *shost;
4377
4378         vports = lpfc_create_vport_work_array(phba);
4379
4380         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4381                 shost = lpfc_shost_from_vport(vports[i]);
4382                 spin_lock_irq(shost->host_lock);
4383                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
4384                         if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport &&
4385                           (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
4386                                 ret = 1;
4387                                 spin_unlock_irq(shost->host_lock);
4388                                 goto out;
4389                         } else {
4390                                 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
4391                                         "2624 RPI %x DID %x flg %x still "
4392                                         "logged in\n",
4393                                         ndlp->nlp_rpi, ndlp->nlp_DID,
4394                                         ndlp->nlp_flag);
4395                                 if (ndlp->nlp_flag & NLP_RPI_VALID)
4396                                         ret = 1;
4397                         }
4398                 }
4399                 spin_unlock_irq(shost->host_lock);
4400         }
4401 out:
4402         lpfc_destroy_vport_work_array(phba, vports);
4403         return ret;
4404 }
4405
4406 /**
4407  * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
4408  * @phba: Pointer to hba context object.
4409  * @mboxq: Pointer to mailbox object.
4410  *
4411  * This function frees memory associated with the mailbox command.
4412  */
4413 static void
4414 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
4415 {
4416         struct lpfc_vport *vport = mboxq->vport;
4417
4418         if (mboxq->u.mb.mbxStatus) {
4419                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4420                         "2555 UNREG_VFI mbxStatus error x%x "
4421                         "HBA state x%x\n",
4422                         mboxq->u.mb.mbxStatus, vport->port_state);
4423         }
4424         mempool_free(mboxq, phba->mbox_mem_pool);
4425         return;
4426 }
4427
4428 /**
4429  * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
4430  * @phba: Pointer to hba context object.
4431  * @mboxq: Pointer to mailbox object.
4432  *
4433  * This function frees memory associated with the mailbox command.
4434  */
4435 static void
4436 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
4437 {
4438         struct lpfc_vport *vport = mboxq->vport;
4439
4440         if (mboxq->u.mb.mbxStatus) {
4441                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4442                         "2550 UNREG_FCFI mbxStatus error x%x "
4443                         "HBA state x%x\n",
4444                         mboxq->u.mb.mbxStatus, vport->port_state);
4445         }
4446         mempool_free(mboxq, phba->mbox_mem_pool);
4447         return;
4448 }
4449
4450 /**
4451  * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
4452  * @phba: Pointer to hba context object.
4453  *
4454  * This function check if there are any connected remote port for the FCF and
4455  * if all the devices are disconnected, this function unregister FCFI.
4456  * This function also tries to use another FCF for discovery.
4457  */
4458 void
4459 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
4460 {
4461         LPFC_MBOXQ_t *mbox;
4462         int rc;
4463         struct lpfc_vport **vports;
4464         int i;
4465
4466         spin_lock_irq(&phba->hbalock);
4467         /*
4468          * If HBA is not running in FIP mode or
4469          * If HBA does not support FCoE or
4470          * If FCF is not registered.
4471          * do nothing.
4472          */
4473         if (!(phba->hba_flag & HBA_FCOE_SUPPORT) ||
4474                 !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
4475                 (!(phba->hba_flag & HBA_FIP_SUPPORT))) {
4476                 spin_unlock_irq(&phba->hbalock);
4477                 return;
4478         }
4479         spin_unlock_irq(&phba->hbalock);
4480
4481         if (lpfc_fcf_inuse(phba))
4482                 return;
4483
4484         /* At this point, all discovery is aborted */
4485         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
4486
4487         /* Unregister VPIs */
4488         vports = lpfc_create_vport_work_array(phba);
4489         if (vports &&
4490                 (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
4491                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4492                         lpfc_mbx_unreg_vpi(vports[i]);
4493                         spin_lock_irq(&phba->hbalock);
4494                         vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
4495                         vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
4496                         spin_unlock_irq(&phba->hbalock);
4497                 }
4498         lpfc_destroy_vport_work_array(phba, vports);
4499
4500         /* Unregister VFI */
4501         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4502         if (!mbox) {
4503                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4504                         "2556 UNREG_VFI mbox allocation failed"
4505                         "HBA state x%x\n",
4506                         phba->pport->port_state);
4507                 return;
4508         }
4509
4510         lpfc_unreg_vfi(mbox, phba->pport);
4511         mbox->vport = phba->pport;
4512         mbox->mbox_cmpl = lpfc_unregister_vfi_cmpl;
4513
4514         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4515         if (rc == MBX_NOT_FINISHED) {
4516                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4517                         "2557 UNREG_VFI issue mbox failed rc x%x "
4518                         "HBA state x%x\n",
4519                         rc, phba->pport->port_state);
4520                 mempool_free(mbox, phba->mbox_mem_pool);
4521                 return;
4522         }
4523
4524         /* Unregister FCF */
4525         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4526         if (!mbox) {
4527                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4528                         "2551 UNREG_FCFI mbox allocation failed"
4529                         "HBA state x%x\n",
4530                         phba->pport->port_state);
4531                 return;
4532         }
4533
4534         lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
4535         mbox->vport = phba->pport;
4536         mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
4537         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4538
4539         if (rc == MBX_NOT_FINISHED) {
4540                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4541                         "2552 UNREG_FCFI issue mbox failed rc x%x "
4542                         "HBA state x%x\n",
4543                         rc, phba->pport->port_state);
4544                 mempool_free(mbox, phba->mbox_mem_pool);
4545                 return;
4546         }
4547
4548         spin_lock_irq(&phba->hbalock);
4549         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_REGISTERED |
4550                 FCF_DISCOVERED | FCF_BOOT_ENABLE | FCF_IN_USE |
4551                 FCF_VALID_VLAN);
4552         spin_unlock_irq(&phba->hbalock);
4553
4554         /*
4555          * If driver is not unloading, check if there is any other
4556          * FCF record that can be used for discovery.
4557          */
4558         if ((phba->pport->load_flag & FC_UNLOADING) ||
4559                 (phba->link_state < LPFC_LINK_UP))
4560                 return;
4561
4562         rc = lpfc_sli4_read_fcf_record(phba, LPFC_FCOE_FCF_GET_FIRST);
4563
4564         if (rc)
4565                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4566                         "2553 lpfc_unregister_unused_fcf failed to read FCF"
4567                         " record HBA state x%x\n",
4568                         phba->pport->port_state);
4569 }
4570
4571 /**
4572  * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
4573  * @phba: Pointer to hba context object.
4574  * @buff: Buffer containing the FCF connection table as in the config
4575  *         region.
4576  * This function create driver data structure for the FCF connection
4577  * record table read from config region 23.
4578  */
4579 static void
4580 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
4581         uint8_t *buff)
4582 {
4583         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
4584         struct lpfc_fcf_conn_hdr *conn_hdr;
4585         struct lpfc_fcf_conn_rec *conn_rec;
4586         uint32_t record_count;
4587         int i;
4588
4589         /* Free the current connect table */
4590         list_for_each_entry_safe(conn_entry, next_conn_entry,
4591                 &phba->fcf_conn_rec_list, list) {
4592                 list_del_init(&conn_entry->list);
4593                 kfree(conn_entry);
4594         }
4595
4596         conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
4597         record_count = conn_hdr->length * sizeof(uint32_t)/
4598                 sizeof(struct lpfc_fcf_conn_rec);
4599
4600         conn_rec = (struct lpfc_fcf_conn_rec *)
4601                 (buff + sizeof(struct lpfc_fcf_conn_hdr));
4602
4603         for (i = 0; i < record_count; i++) {
4604                 if (!(conn_rec[i].flags & FCFCNCT_VALID))
4605                         continue;
4606                 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
4607                         GFP_KERNEL);
4608                 if (!conn_entry) {
4609                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4610                                 "2566 Failed to allocate connection"
4611                                 " table entry\n");
4612                         return;
4613                 }
4614
4615                 memcpy(&conn_entry->conn_rec, &conn_rec[i],
4616                         sizeof(struct lpfc_fcf_conn_rec));
4617                 conn_entry->conn_rec.vlan_tag =
4618                         le16_to_cpu(conn_entry->conn_rec.vlan_tag) & 0xFFF;
4619                 conn_entry->conn_rec.flags =
4620                         le16_to_cpu(conn_entry->conn_rec.flags);
4621                 list_add_tail(&conn_entry->list,
4622                         &phba->fcf_conn_rec_list);
4623         }
4624 }
4625
4626 /**
4627  * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
4628  * @phba: Pointer to hba context object.
4629  * @buff: Buffer containing the FCoE parameter data structure.
4630  *
4631  *  This function update driver data structure with config
4632  *  parameters read from config region 23.
4633  */
4634 static void
4635 lpfc_read_fcoe_param(struct lpfc_hba *phba,
4636                         uint8_t *buff)
4637 {
4638         struct lpfc_fip_param_hdr *fcoe_param_hdr;
4639         struct lpfc_fcoe_params *fcoe_param;
4640
4641         fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
4642                 buff;
4643         fcoe_param = (struct lpfc_fcoe_params *)
4644                 (buff + sizeof(struct lpfc_fip_param_hdr));
4645
4646         if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
4647                 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
4648                 return;
4649
4650         if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
4651                 phba->valid_vlan = 1;
4652                 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
4653                         0xFFF;
4654         }
4655
4656         phba->fc_map[0] = fcoe_param->fc_map[0];
4657         phba->fc_map[1] = fcoe_param->fc_map[1];
4658         phba->fc_map[2] = fcoe_param->fc_map[2];
4659         return;
4660 }
4661
4662 /**
4663  * lpfc_get_rec_conf23 - Get a record type in config region data.
4664  * @buff: Buffer containing config region 23 data.
4665  * @size: Size of the data buffer.
4666  * @rec_type: Record type to be searched.
4667  *
4668  * This function searches config region data to find the begining
4669  * of the record specified by record_type. If record found, this
4670  * function return pointer to the record else return NULL.
4671  */
4672 static uint8_t *
4673 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
4674 {
4675         uint32_t offset = 0, rec_length;
4676
4677         if ((buff[0] == LPFC_REGION23_LAST_REC) ||
4678                 (size < sizeof(uint32_t)))
4679                 return NULL;
4680
4681         rec_length = buff[offset + 1];
4682
4683         /*
4684          * One TLV record has one word header and number of data words
4685          * specified in the rec_length field of the record header.
4686          */
4687         while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
4688                 <= size) {
4689                 if (buff[offset] == rec_type)
4690                         return &buff[offset];
4691
4692                 if (buff[offset] == LPFC_REGION23_LAST_REC)
4693                         return NULL;
4694
4695                 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
4696                 rec_length = buff[offset + 1];
4697         }
4698         return NULL;
4699 }
4700
4701 /**
4702  * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
4703  * @phba: Pointer to lpfc_hba data structure.
4704  * @buff: Buffer containing config region 23 data.
4705  * @size: Size of the data buffer.
4706  *
4707  * This fuction parse the FCoE config parameters in config region 23 and
4708  * populate driver data structure with the parameters.
4709  */
4710 void
4711 lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
4712                 uint8_t *buff,
4713                 uint32_t size)
4714 {
4715         uint32_t offset = 0, rec_length;
4716         uint8_t *rec_ptr;
4717
4718         /*
4719          * If data size is less than 2 words signature and version cannot be
4720          * verified.
4721          */
4722         if (size < 2*sizeof(uint32_t))
4723                 return;
4724
4725         /* Check the region signature first */
4726         if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
4727                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4728                         "2567 Config region 23 has bad signature\n");
4729                 return;
4730         }
4731
4732         offset += 4;
4733
4734         /* Check the data structure version */
4735         if (buff[offset] != LPFC_REGION23_VERSION) {
4736                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4737                         "2568 Config region 23 has bad version\n");
4738                 return;
4739         }
4740         offset += 4;
4741
4742         rec_length = buff[offset + 1];
4743
4744         /* Read FCoE param record */
4745         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
4746                         size - offset, FCOE_PARAM_TYPE);
4747         if (rec_ptr)
4748                 lpfc_read_fcoe_param(phba, rec_ptr);
4749
4750         /* Read FCF connection table */
4751         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
4752                 size - offset, FCOE_CONN_TBL_TYPE);
4753         if (rec_ptr)
4754                 lpfc_read_fcf_conn_tbl(phba, rec_ptr);
4755
4756 }