Pileus Git - ~andy/linux/blob - 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) 2004-2007 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_hw.h"
  33 #include "lpfc_disc.h"
  34 #include "lpfc_sli.h"
  35 #include "lpfc_scsi.h"
  36 #include "lpfc.h"
  37 #include "lpfc_logmsg.h"
  38 #include "lpfc_crtn.h"
  39 #include "lpfc_vport.h"
  40 #include "lpfc_debugfs.h"
  41
  42 /* AlpaArray for assignment of scsid for scan-down and bind_method */
  43 static uint8_t lpfcAlpaArray[] = {
  44         0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
  45         0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
  46         0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
  47         0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
  48         0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
  49         0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
  50         0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
  51         0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
  52         0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
  53         0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
  54         0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
  55         0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
  56         0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
  57 };
  58
  59 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
  60
  61 void
  62 lpfc_terminate_rport_io(struct fc_rport *rport)
  63 {
  64         struct lpfc_rport_data *rdata;
  65         struct lpfc_nodelist * ndlp;
  66         struct lpfc_hba *phba;
  67
  68         rdata = rport->dd_data;
  69         ndlp = rdata->pnode;
  70
  71         if (!ndlp) {
  72                 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
  73                         printk(KERN_ERR "Cannot find remote node"
  74                         " to terminate I/O Data x%x\n",
  75                         rport->port_id);
  76                 return;
  77         }
  78
  79         phba  = ndlp->vport->phba;
  80
  81         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
  82                 "rport terminate: sid:x%x did:x%x flg:x%x",
  83                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
  84
  85         if (ndlp->nlp_sid != NLP_NO_SID) {
  86                 lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring],
  87                         ndlp->nlp_sid, 0, 0, LPFC_CTX_TGT);
  88         }
  89
  90         return;
  91 }
  92
  93 /*
  94  * This function will be called when dev_loss_tmo fire.
  95  */
  96 void
  97 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
  98 {
  99         struct lpfc_rport_data *rdata;
 100         struct lpfc_nodelist * ndlp;
 101         struct lpfc_vport *vport;
 102         struct lpfc_hba   *phba;
 103         struct completion devloss_compl;
 104         struct lpfc_work_evt *evtp;
 105
 106         rdata = rport->dd_data;
 107         ndlp = rdata->pnode;
 108
 109         if (!ndlp) {
 110                 if (rport->scsi_target_id != -1) {
 111                         printk(KERN_ERR "Cannot find remote node"
 112                                 " for rport in dev_loss_tmo_callbk x%x\n",
 113                                 rport->port_id);
 114                 }
 115                 return;
 116         }
 117
 118         vport = ndlp->vport;
 119         phba  = vport->phba;
 120
 121         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 122                 "rport devlosscb: sid:x%x did:x%x flg:x%x",
 123                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 124
 125         init_completion(&devloss_compl);
 126         evtp = &ndlp->dev_loss_evt;
 127
 128         if (!list_empty(&evtp->evt_listp))
 129                 return;
 130
 131         spin_lock_irq(&phba->hbalock);
 132         evtp->evt_arg1  = ndlp;
 133         evtp->evt_arg2  = &devloss_compl;
 134         evtp->evt       = LPFC_EVT_DEV_LOSS;
 135         list_add_tail(&evtp->evt_listp, &phba->work_list);
 136         if (phba->work_wait)
 137                 wake_up(phba->work_wait);
 138
 139         spin_unlock_irq(&phba->hbalock);
 140
 141         wait_for_completion(&devloss_compl);
 142
 143         return;
 144 }
 145
 146 /*
 147  * This function is called from the worker thread when dev_loss_tmo
 148  * expire.
 149  */
 150 void
 151 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 152 {
 153         struct lpfc_rport_data *rdata;
 154         struct fc_rport   *rport;
 155         struct lpfc_vport *vport;
 156         struct lpfc_hba   *phba;
 157         uint8_t *name;
 158         int warn_on = 0;
 159
 160         rport = ndlp->rport;
 161
 162         if (!rport)
 163                 return;
 164
 165         rdata = rport->dd_data;
 166         name = (uint8_t *) &ndlp->nlp_portname;
 167         vport = ndlp->vport;
 168         phba  = vport->phba;
 169
 170         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 171                 "rport devlosstmo:did:x%x type:x%x id:x%x",
 172                 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
 173
 174         if (!(vport->load_flag & FC_UNLOADING) &&
 175             ndlp->nlp_state == NLP_STE_MAPPED_NODE)
 176                 return;
 177
 178         if (ndlp->nlp_type & NLP_FABRIC) {
 179                 int  put_node;
 180                 int  put_rport;
 181
 182                 /* We will clean up these Nodes in linkup */
 183                 put_node = rdata->pnode != NULL;
 184                 put_rport = ndlp->rport != NULL;
 185                 rdata->pnode = NULL;
 186                 ndlp->rport = NULL;
 187                 if (put_node)
 188                         lpfc_nlp_put(ndlp);
 189                 if (put_rport)
 190                         put_device(&rport->dev);
 191                 return;
 192         }
 193
 194         if (ndlp->nlp_sid != NLP_NO_SID) {
 195                 warn_on = 1;
 196                 /* flush the target */
 197                 lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring],
 198                                     ndlp->nlp_sid, 0, 0, LPFC_CTX_TGT);
 199         }
 200         if (vport->load_flag & FC_UNLOADING)
 201                 warn_on = 0;
 202
 203         if (warn_on) {
 204                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
 205                                 "%d (%d):0203 Devloss timeout on "
 206                                 "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 207                                 "NPort x%x Data: x%x x%x x%x\n",
 208                                 phba->brd_no, vport->vpi,
 209                                 *name, *(name+1), *(name+2), *(name+3),
 210                                 *(name+4), *(name+5), *(name+6), *(name+7),
 211                                 ndlp->nlp_DID, ndlp->nlp_flag,
 212                                 ndlp->nlp_state, ndlp->nlp_rpi);
 213         } else {
 214                 lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
 215                                 "%d (%d):0204 Devloss timeout on "
 216                                 "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 217                                 "NPort x%x Data: x%x x%x x%x\n",
 218                                 phba->brd_no, vport->vpi,
 219                                 *name, *(name+1), *(name+2), *(name+3),
 220                                 *(name+4), *(name+5), *(name+6), *(name+7),
 221                                 ndlp->nlp_DID, ndlp->nlp_flag,
 222                                 ndlp->nlp_state, ndlp->nlp_rpi);
 223         }
 224
 225         if (!(vport->load_flag & FC_UNLOADING) &&
 226             !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
 227             !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
 228             (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE))
 229                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 230         else {
 231                 int  put_node;
 232                 int  put_rport;
 233
 234                 put_node = rdata->pnode != NULL;
 235                 put_rport = ndlp->rport != NULL;
 236                 rdata->pnode = NULL;
 237                 ndlp->rport = NULL;
 238                 if (put_node)
 239                         lpfc_nlp_put(ndlp);
 240                 if (put_rport)
 241                         put_device(&rport->dev);
 242         }
 243 }
 244
 245
 246 void
 247 lpfc_worker_wake_up(struct lpfc_hba *phba)
 248 {
 249         wake_up(phba->work_wait);
 250         return;
 251 }
 252
 253 static void
 254 lpfc_work_list_done(struct lpfc_hba *phba)
 255 {
 256         struct lpfc_work_evt  *evtp = NULL;
 257         struct lpfc_nodelist  *ndlp;
 258         struct lpfc_vport     *vport;
 259         int free_evt;
 260
 261         spin_lock_irq(&phba->hbalock);
 262         while (!list_empty(&phba->work_list)) {
 263                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
 264                                  evt_listp);
 265                 spin_unlock_irq(&phba->hbalock);
 266                 free_evt = 1;
 267                 switch (evtp->evt) {
 268                 case LPFC_EVT_DEV_LOSS_DELAY:
 269                         free_evt = 0; /* evt is part of ndlp */
 270                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 271                         vport = ndlp->vport;
 272                         if (!vport)
 273                                 break;
 274
 275                         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 276                                 "rport devlossdly:did:x%x flg:x%x",
 277                                 ndlp->nlp_DID, ndlp->nlp_flag, 0);
 278
 279                         if (!(vport->load_flag & FC_UNLOADING) &&
 280                             !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
 281                             !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
 282                                 lpfc_disc_state_machine(vport, ndlp, NULL,
 283                                         NLP_EVT_DEVICE_RM);
 284                         }
 285                         break;
 286                 case LPFC_EVT_ELS_RETRY:
 287                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 288                         lpfc_els_retry_delay_handler(ndlp);
 289                         free_evt = 0; /* evt is part of ndlp */
 290                         break;
 291                 case LPFC_EVT_DEV_LOSS:
 292                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 293                         lpfc_nlp_get(ndlp);
 294                         lpfc_dev_loss_tmo_handler(ndlp);
 295                         free_evt = 0;
 296                         complete((struct completion *)(evtp->evt_arg2));
 297                         lpfc_nlp_put(ndlp);
 298                         break;
 299                 case LPFC_EVT_ONLINE:
 300                         if (phba->link_state < LPFC_LINK_DOWN)
 301                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
 302                         else
 303                                 *(int *) (evtp->evt_arg1) = 0;
 304                         complete((struct completion *)(evtp->evt_arg2));
 305                         break;
 306                 case LPFC_EVT_OFFLINE_PREP:
 307                         if (phba->link_state >= LPFC_LINK_DOWN)
 308                                 lpfc_offline_prep(phba);
 309                         *(int *)(evtp->evt_arg1) = 0;
 310                         complete((struct completion *)(evtp->evt_arg2));
 311                         break;
 312                 case LPFC_EVT_OFFLINE:
 313                         lpfc_offline(phba);
 314                         lpfc_sli_brdrestart(phba);
 315                         *(int *)(evtp->evt_arg1) =
 316                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
 317                         lpfc_unblock_mgmt_io(phba);
 318                         complete((struct completion *)(evtp->evt_arg2));
 319                         break;
 320                 case LPFC_EVT_WARM_START:
 321                         lpfc_offline(phba);
 322                         lpfc_reset_barrier(phba);
 323                         lpfc_sli_brdreset(phba);
 324                         lpfc_hba_down_post(phba);
 325                         *(int *)(evtp->evt_arg1) =
 326                                 lpfc_sli_brdready(phba, HS_MBRDY);
 327                         lpfc_unblock_mgmt_io(phba);
 328                         complete((struct completion *)(evtp->evt_arg2));
 329                         break;
 330                 case LPFC_EVT_KILL:
 331                         lpfc_offline(phba);
 332                         *(int *)(evtp->evt_arg1)
 333                                 = (phba->pport->stopped)
 334                                         ? 0 : lpfc_sli_brdkill(phba);
 335                         lpfc_unblock_mgmt_io(phba);
 336                         complete((struct completion *)(evtp->evt_arg2));
 337                         break;
 338                 }
 339                 if (free_evt)
 340                         kfree(evtp);
 341                 spin_lock_irq(&phba->hbalock);
 342         }
 343         spin_unlock_irq(&phba->hbalock);
 344
 345 }
 346
 347 void
 348 lpfc_work_done(struct lpfc_hba *phba)
 349 {
 350         struct lpfc_sli_ring *pring;
 351         uint32_t ha_copy, status, control, work_port_events;
 352         struct lpfc_vport **vports;
 353         int i;
 354
 355         spin_lock_irq(&phba->hbalock);
 356         ha_copy = phba->work_ha;
 357         phba->work_ha = 0;
 358         spin_unlock_irq(&phba->hbalock);
 359
 360         if (ha_copy & HA_ERATT)
 361                 lpfc_handle_eratt(phba);
 362
 363         if (ha_copy & HA_MBATT)
 364                 lpfc_sli_handle_mb_event(phba);
 365
 366         if (ha_copy & HA_LATT)
 367                 lpfc_handle_latt(phba);
 368         vports = lpfc_create_vport_work_array(phba);
 369         if (vports != NULL)
 370                 for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++) {
 371                         work_port_events = vports[i]->work_port_events;
 372                         if (work_port_events & WORKER_DISC_TMO)
 373                                 lpfc_disc_timeout_handler(vports[i]);
 374                         if (work_port_events & WORKER_ELS_TMO)
 375                                 lpfc_els_timeout_handler(vports[i]);
 376                         if (work_port_events & WORKER_HB_TMO)
 377                                 lpfc_hb_timeout_handler(phba);
 378                         if (work_port_events & WORKER_MBOX_TMO)
 379                                 lpfc_mbox_timeout_handler(phba);
 380                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
 381                                 lpfc_unblock_fabric_iocbs(phba);
 382                         if (work_port_events & WORKER_FDMI_TMO)
 383                                 lpfc_fdmi_timeout_handler(vports[i]);
 384                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
 385                                 lpfc_ramp_down_queue_handler(phba);
 386                         if (work_port_events & WORKER_RAMP_UP_QUEUE)
 387                                 lpfc_ramp_up_queue_handler(phba);
 388                         spin_lock_irq(&vports[i]->work_port_lock);
 389                         vports[i]->work_port_events &= ~work_port_events;
 390                         spin_unlock_irq(&vports[i]->work_port_lock);
 391                 }
 392         lpfc_destroy_vport_work_array(vports);
 393
 394         pring = &phba->sli.ring[LPFC_ELS_RING];
 395         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
 396         status >>= (4*LPFC_ELS_RING);
 397         if ((status & HA_RXMASK)
 398                 || (pring->flag & LPFC_DEFERRED_RING_EVENT)) {
 399                 if (pring->flag & LPFC_STOP_IOCB_MASK) {
 400                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
 401                 } else {
 402                         lpfc_sli_handle_slow_ring_event(phba, pring,
 403                                                         (status &
 404                                                          HA_RXMASK));
 405                         pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
 406                 }
 407                 /*
 408                  * Turn on Ring interrupts
 409                  */
 410                 spin_lock_irq(&phba->hbalock);
 411                 control = readl(phba->HCregaddr);
 412                 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
 413                         lpfc_debugfs_slow_ring_trc(phba,
 414                                 "WRK Enable ring: cntl:x%x hacopy:x%x",
 415                                 control, ha_copy, 0);
 416
 417                         control |= (HC_R0INT_ENA << LPFC_ELS_RING);
 418                         writel(control, phba->HCregaddr);
 419                         readl(phba->HCregaddr); /* flush */
 420                 }
 421                 else {
 422                         lpfc_debugfs_slow_ring_trc(phba,
 423                                 "WRK Ring ok:     cntl:x%x hacopy:x%x",
 424                                 control, ha_copy, 0);
 425                 }
 426                 spin_unlock_irq(&phba->hbalock);
 427         }
 428         lpfc_work_list_done(phba);
 429 }
 430
 431 static int
 432 check_work_wait_done(struct lpfc_hba *phba)
 433 {
 434         struct lpfc_vport *vport;
 435         struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
 436         int rc = 0;
 437
 438         spin_lock_irq(&phba->hbalock);
 439         list_for_each_entry(vport, &phba->port_list, listentry) {
 440                 if (vport->work_port_events) {
 441                         rc = 1;
 442                         break;
 443                 }
 444         }
 445         if (rc || phba->work_ha || (!list_empty(&phba->work_list)) ||
 446             kthread_should_stop() || pring->flag & LPFC_DEFERRED_RING_EVENT) {
 447                 rc = 1;
 448                 phba->work_found++;
 449         } else
 450                 phba->work_found = 0;
 451         spin_unlock_irq(&phba->hbalock);
 452         return rc;
 453 }
 454
 455
 456 int
 457 lpfc_do_work(void *p)
 458 {
 459         struct lpfc_hba *phba = p;
 460         int rc;
 461         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(work_waitq);
 462
 463         set_user_nice(current, -20);
 464         phba->work_wait = &work_waitq;
 465         phba->work_found = 0;
 466
 467         while (1) {
 468
 469                 rc = wait_event_interruptible(work_waitq,
 470                                               check_work_wait_done(phba));
 471
 472                 BUG_ON(rc);
 473
 474                 if (kthread_should_stop())
 475                         break;
 476
 477                 lpfc_work_done(phba);
 478
 479                 /* If there is alot of slow ring work, like during link up
 480                  * check_work_wait_done() may cause this thread to not give
 481                  * up the CPU for very long periods of time. This may cause
 482                  * soft lockups or other problems. To avoid these situations
 483                  * give up the CPU here after LPFC_MAX_WORKER_ITERATION
 484                  * consecutive iterations.
 485                  */
 486                 if (phba->work_found >= LPFC_MAX_WORKER_ITERATION) {
 487                         phba->work_found = 0;
 488                         schedule();
 489                 }
 490         }
 491         phba->work_wait = NULL;
 492         return 0;
 493 }
 494
 495 /*
 496  * This is only called to handle FC worker events. Since this a rare
 497  * occurance, we allocate a struct lpfc_work_evt structure here instead of
 498  * embedding it in the IOCB.
 499  */
 500 int
 501 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
 502                       uint32_t evt)
 503 {
 504         struct lpfc_work_evt  *evtp;
 505         unsigned long flags;
 506
 507         /*
 508          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
 509          * be queued to worker thread for processing
 510          */
 511         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
 512         if (!evtp)
 513                 return 0;
 514
 515         evtp->evt_arg1  = arg1;
 516         evtp->evt_arg2  = arg2;
 517         evtp->evt       = evt;
 518
 519         spin_lock_irqsave(&phba->hbalock, flags);
 520         list_add_tail(&evtp->evt_listp, &phba->work_list);
 521         if (phba->work_wait)
 522                 lpfc_worker_wake_up(phba);
 523         spin_unlock_irqrestore(&phba->hbalock, flags);
 524
 525         return 1;
 526 }
 527
 528 void
 529 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
 530 {
 531         struct lpfc_hba  *phba = vport->phba;
 532         struct lpfc_nodelist *ndlp, *next_ndlp;
 533         int  rc;
 534
 535         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
 536                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 537                         continue;
 538
 539                 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN)
 540                         lpfc_unreg_rpi(vport, ndlp);
 541
 542                 /* Leave Fabric nodes alone on link down */
 543                 if (!remove && ndlp->nlp_type & NLP_FABRIC)
 544                         continue;
 545                 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
 546                                              remove
 547                                              ? NLP_EVT_DEVICE_RM
 548                                              : NLP_EVT_DEVICE_RECOVERY);
 549         }
 550         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
 551                 lpfc_mbx_unreg_vpi(vport);
 552                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
 553         }
 554 }
 555
 556 static void
 557 lpfc_linkdown_port(struct lpfc_vport *vport)
 558 {
 559         struct lpfc_nodelist *ndlp, *next_ndlp;
 560         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 561
 562         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
 563
 564         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 565                 "Link Down:       state:x%x rtry:x%x flg:x%x",
 566                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
 567
 568         /* Cleanup any outstanding RSCN activity */
 569         lpfc_els_flush_rscn(vport);
 570
 571         /* Cleanup any outstanding ELS commands */
 572         lpfc_els_flush_cmd(vport);
 573
 574         lpfc_cleanup_rpis(vport, 0);
 575
 576         /* free any ndlp's on unused list */
 577         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp)
 578                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 579                         lpfc_drop_node(vport, ndlp);
 580
 581         /* Turn off discovery timer if its running */
 582         lpfc_can_disctmo(vport);
 583 }
 584
 585 int
 586 lpfc_linkdown(struct lpfc_hba *phba)
 587 {
 588         struct lpfc_vport *vport = phba->pport;
 589         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 590         struct lpfc_vport **vports;
 591         LPFC_MBOXQ_t          *mb;
 592         int i;
 593
 594         if (phba->link_state == LPFC_LINK_DOWN) {
 595                 return 0;
 596         }
 597         spin_lock_irq(&phba->hbalock);
 598         if (phba->link_state > LPFC_LINK_DOWN) {
 599                 phba->link_state = LPFC_LINK_DOWN;
 600                 phba->pport->fc_flag &= ~FC_LBIT;
 601         }
 602         spin_unlock_irq(&phba->hbalock);
 603         vports = lpfc_create_vport_work_array(phba);
 604         if (vports != NULL)
 605                 for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++) {
 606                         /* Issue a LINK DOWN event to all nodes */
 607                         lpfc_linkdown_port(vports[i]);
 608                 }
 609         lpfc_destroy_vport_work_array(vports);
 610         /* Clean up any firmware default rpi's */
 611         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 612         if (mb) {
 613                 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
 614                 mb->vport = vport;
 615                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 616                 if (lpfc_sli_issue_mbox(phba, mb, (MBX_NOWAIT | MBX_STOP_IOCB))
 617                     == MBX_NOT_FINISHED) {
 618                         mempool_free(mb, phba->mbox_mem_pool);
 619                 }
 620         }
 621
 622         /* Setup myDID for link up if we are in pt2pt mode */
 623         if (phba->pport->fc_flag & FC_PT2PT) {
 624                 phba->pport->fc_myDID = 0;
 625                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 626                 if (mb) {
 627                         lpfc_config_link(phba, mb);
 628                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 629                         mb->vport = vport;
 630                         if (lpfc_sli_issue_mbox(phba, mb,
 631                                                 (MBX_NOWAIT | MBX_STOP_IOCB))
 632                             == MBX_NOT_FINISHED) {
 633                                 mempool_free(mb, phba->mbox_mem_pool);
 634                         }
 635                 }
 636                 spin_lock_irq(shost->host_lock);
 637                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
 638                 spin_unlock_irq(shost->host_lock);
 639         }
 640
 641         return 0;
 642 }
 643
 644 static void
 645 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
 646 {
 647         struct lpfc_nodelist *ndlp;
 648
 649         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
 650                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 651                         continue;
 652
 653                 if (ndlp->nlp_type & NLP_FABRIC) {
 654                                 /* On Linkup its safe to clean up the ndlp
 655                                  * from Fabric connections.
 656                                  */
 657                         if (ndlp->nlp_DID != Fabric_DID)
 658                                 lpfc_unreg_rpi(vport, ndlp);
 659                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 660                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
 661                                 /* Fail outstanding IO now since device is
 662                                  * marked for PLOGI.
 663                                  */
 664                         lpfc_unreg_rpi(vport, ndlp);
 665                 }
 666         }
 667 }
 668
 669 static void
 670 lpfc_linkup_port(struct lpfc_vport *vport)
 671 {
 672         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 673         struct lpfc_nodelist *ndlp, *next_ndlp;
 674         struct lpfc_hba  *phba = vport->phba;
 675
 676         if ((vport->load_flag & FC_UNLOADING) != 0)
 677                 return;
 678
 679         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 680                 "Link Up:         top:x%x speed:x%x flg:x%x",
 681                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
 682
 683         /* If NPIV is not enabled, only bring the physical port up */
 684         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
 685                 (vport != phba->pport))
 686                 return;
 687
 688         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
 689
 690         spin_lock_irq(shost->host_lock);
 691         vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
 692                             FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
 693         vport->fc_flag |= FC_NDISC_ACTIVE;
 694         vport->fc_ns_retry = 0;
 695         spin_unlock_irq(shost->host_lock);
 696
 697         if (vport->fc_flag & FC_LBIT)
 698                 lpfc_linkup_cleanup_nodes(vport);
 699
 700                                 /* free any ndlp's in unused state */
 701         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
 702                                  nlp_listp)
 703                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 704                         lpfc_drop_node(vport, ndlp);
 705 }
 706
 707 static int
 708 lpfc_linkup(struct lpfc_hba *phba)
 709 {
 710         struct lpfc_vport **vports;
 711         int i;
 712
 713         phba->link_state = LPFC_LINK_UP;
 714
 715         /* Unblock fabric iocbs if they are blocked */
 716         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
 717         del_timer_sync(&phba->fabric_block_timer);
 718
 719         vports = lpfc_create_vport_work_array(phba);
 720         if (vports != NULL)
 721                 for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++)
 722                         lpfc_linkup_port(vports[i]);
 723         lpfc_destroy_vport_work_array(vports);
 724         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
 725                 lpfc_issue_clear_la(phba, phba->pport);
 726
 727         return 0;
 728 }
 729
 730 /*
 731  * This routine handles processing a CLEAR_LA mailbox
 732  * command upon completion. It is setup in the LPFC_MBOXQ
 733  * as the completion routine when the command is
 734  * handed off to the SLI layer.
 735  */
 736 void
 737 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 738 {
 739         struct lpfc_vport *vport = pmb->vport;
 740         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 741         struct lpfc_sli   *psli = &phba->sli;
 742         MAILBOX_t *mb = &pmb->mb;
 743         uint32_t control;
 744
 745         /* Since we don't do discovery right now, turn these off here */
 746         psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 747         psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 748         psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 749
 750         /* Check for error */
 751         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
 752                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
 753                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
 754                                 "%d (%d):0320 CLEAR_LA mbxStatus error x%x hba "
 755                                 "state x%x\n",
 756                                 phba->brd_no, vport->vpi, mb->mbxStatus,
 757                                 vport->port_state);
 758
 759                 phba->link_state = LPFC_HBA_ERROR;
 760                 goto out;
 761         }
 762
 763         if (vport->port_type == LPFC_PHYSICAL_PORT)
 764                 phba->link_state = LPFC_HBA_READY;
 765
 766         spin_lock_irq(&phba->hbalock);
 767         psli->sli_flag |= LPFC_PROCESS_LA;
 768         control = readl(phba->HCregaddr);
 769         control |= HC_LAINT_ENA;
 770         writel(control, phba->HCregaddr);
 771         readl(phba->HCregaddr); /* flush */
 772         spin_unlock_irq(&phba->hbalock);
 773         return;
 774
 775         vport->num_disc_nodes = 0;
 776         /* go thru NPR nodes and issue ELS PLOGIs */
 777         if (vport->fc_npr_cnt)
 778                 lpfc_els_disc_plogi(vport);
 779
 780         if (!vport->num_disc_nodes) {
 781                 spin_lock_irq(shost->host_lock);
 782                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
 783                 spin_unlock_irq(shost->host_lock);
 784         }
 785
 786         vport->port_state = LPFC_VPORT_READY;
 787
 788 out:
 789         /* Device Discovery completes */
 790         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
 791                         "%d (%d):0225 Device Discovery completes\n",
 792                         phba->brd_no, vport->vpi);
 793
 794         mempool_free(pmb, phba->mbox_mem_pool);
 795
 796         spin_lock_irq(shost->host_lock);
 797         vport->fc_flag &= ~(FC_ABORT_DISCOVERY | FC_ESTABLISH_LINK);
 798         spin_unlock_irq(shost->host_lock);
 799
 800         del_timer_sync(&phba->fc_estabtmo);
 801
 802         lpfc_can_disctmo(vport);
 803
 804         /* turn on Link Attention interrupts */
 805
 806         spin_lock_irq(&phba->hbalock);
 807         psli->sli_flag |= LPFC_PROCESS_LA;
 808         control = readl(phba->HCregaddr);
 809         control |= HC_LAINT_ENA;
 810         writel(control, phba->HCregaddr);
 811         readl(phba->HCregaddr); /* flush */
 812         spin_unlock_irq(&phba->hbalock);
 813
 814         return;
 815 }
 816
 817
 818 static void
 819 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 820 {
 821         struct lpfc_vport *vport = pmb->vport;
 822
 823         if (pmb->mb.mbxStatus)
 824                 goto out;
 825
 826         mempool_free(pmb, phba->mbox_mem_pool);
 827
 828         if (phba->fc_topology == TOPOLOGY_LOOP &&
 829             vport->fc_flag & FC_PUBLIC_LOOP &&
 830             !(vport->fc_flag & FC_LBIT)) {
 831                         /* Need to wait for FAN - use discovery timer
 832                          * for timeout.  port_state is identically
 833                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
 834                          */
 835                         lpfc_set_disctmo(vport);
 836                         return;
 837         }
 838
 839         /* Start discovery by sending a FLOGI. port_state is identically
 840          * LPFC_FLOGI while waiting for FLOGI cmpl
 841          */
 842         if (vport->port_state != LPFC_FLOGI) {
 843                 vport->port_state = LPFC_FLOGI;
 844                 lpfc_set_disctmo(vport);
 845                 lpfc_initial_flogi(vport);
 846         }
 847         return;
 848
 849 out:
 850         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
 851                         "%d (%d):0306 CONFIG_LINK mbxStatus error x%x "
 852                         "HBA state x%x\n",
 853                         phba->brd_no, vport->vpi, pmb->mb.mbxStatus,
 854                         vport->port_state);
 855
 856         mempool_free(pmb, phba->mbox_mem_pool);
 857
 858         lpfc_linkdown(phba);
 859
 860         lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
 861                         "%d (%d):0200 CONFIG_LINK bad hba state x%x\n",
 862                         phba->brd_no, vport->vpi, vport->port_state);
 863
 864         lpfc_issue_clear_la(phba, vport);
 865         return;
 866 }
 867
 868 static void
 869 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 870 {
 871         MAILBOX_t *mb = &pmb->mb;
 872         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
 873         struct lpfc_vport  *vport = pmb->vport;
 874
 875
 876         /* Check for error */
 877         if (mb->mbxStatus) {
 878                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
 879                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
 880                                 "%d (%d):0319 READ_SPARAM mbxStatus error x%x "
 881                                 "hba state x%x>\n",
 882                                 phba->brd_no, vport->vpi, mb->mbxStatus,
 883                                 vport->port_state);
 884
 885                 lpfc_linkdown(phba);
 886                 goto out;
 887         }
 888
 889         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
 890                sizeof (struct serv_parm));
 891         if (phba->cfg_soft_wwnn)
 892                 u64_to_wwn(phba->cfg_soft_wwnn,
 893                            vport->fc_sparam.nodeName.u.wwn);
 894         if (phba->cfg_soft_wwpn)
 895                 u64_to_wwn(phba->cfg_soft_wwpn,
 896                            vport->fc_sparam.portName.u.wwn);
 897         memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
 898                sizeof(vport->fc_nodename));
 899         memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
 900                sizeof(vport->fc_portname));
 901         if (vport->port_type == LPFC_PHYSICAL_PORT) {
 902                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
 903                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
 904         }
 905
 906         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 907         kfree(mp);
 908         mempool_free(pmb, phba->mbox_mem_pool);
 909         return;
 910
 911 out:
 912         pmb->context1 = NULL;
 913         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 914         kfree(mp);
 915         lpfc_issue_clear_la(phba, vport);
 916         mempool_free(pmb, phba->mbox_mem_pool);
 917         return;
 918 }
 919
 920 static void
 921 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
 922 {
 923         struct lpfc_vport *vport = phba->pport;
 924         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox;
 925         int i;
 926         struct lpfc_dmabuf *mp;
 927         int rc;
 928
 929         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 930         cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 931
 932         spin_lock_irq(&phba->hbalock);
 933         switch (la->UlnkSpeed) {
 934         case LA_1GHZ_LINK:
 935                 phba->fc_linkspeed = LA_1GHZ_LINK;
 936                 break;
 937         case LA_2GHZ_LINK:
 938                 phba->fc_linkspeed = LA_2GHZ_LINK;
 939                 break;
 940         case LA_4GHZ_LINK:
 941                 phba->fc_linkspeed = LA_4GHZ_LINK;
 942                 break;
 943         case LA_8GHZ_LINK:
 944                 phba->fc_linkspeed = LA_8GHZ_LINK;
 945                 break;
 946         default:
 947                 phba->fc_linkspeed = LA_UNKNW_LINK;
 948                 break;
 949         }
 950
 951         phba->fc_topology = la->topology;
 952         phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
 953
 954         if (phba->fc_topology == TOPOLOGY_LOOP) {
 955                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
 956
 957                                 /* Get Loop Map information */
 958                 if (la->il)
 959                         vport->fc_flag |= FC_LBIT;
 960
 961                 vport->fc_myDID = la->granted_AL_PA;
 962                 i = la->un.lilpBde64.tus.f.bdeSize;
 963
 964                 if (i == 0) {
 965                         phba->alpa_map[0] = 0;
 966                 } else {
 967                         if (phba->cfg_log_verbose & LOG_LINK_EVENT) {
 968                                 int numalpa, j, k;
 969                                 union {
 970                                         uint8_t pamap[16];
 971                                         struct {
 972                                                 uint32_t wd1;
 973                                                 uint32_t wd2;
 974                                                 uint32_t wd3;
 975                                                 uint32_t wd4;
 976                                         } pa;
 977                                 } un;
 978                                 numalpa = phba->alpa_map[0];
 979                                 j = 0;
 980                                 while (j < numalpa) {
 981                                         memset(un.pamap, 0, 16);
 982                                         for (k = 1; j < numalpa; k++) {
 983                                                 un.pamap[k - 1] =
 984                                                         phba->alpa_map[j + 1];
 985                                                 j++;
 986                                                 if (k == 16)
 987                                                         break;
 988                                         }
 989                                         /* Link Up Event ALPA map */
 990                                         lpfc_printf_log(phba,
 991                                                         KERN_WARNING,
 992                                                         LOG_LINK_EVENT,
 993                                                         "%d:1304 Link Up Event "
 994                                                         "ALPA map Data: x%x "
 995                                                         "x%x x%x x%x\n",
 996                                                         phba->brd_no,
 997                                                         un.pa.wd1, un.pa.wd2,
 998                                                         un.pa.wd3, un.pa.wd4);
 999                                 }
1000                         }
1001                 }
1002         } else {
1003                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
1004                         if (phba->max_vpi && phba->cfg_npiv_enable &&
1005                            (phba->sli_rev == 3))
1006                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
1007                 }
1008                 vport->fc_myDID = phba->fc_pref_DID;
1009                 vport->fc_flag |= FC_LBIT;
1010         }
1011         spin_unlock_irq(&phba->hbalock);
1012
1013         lpfc_linkup(phba);
1014         if (sparam_mbox) {
1015                 lpfc_read_sparam(phba, sparam_mbox, 0);
1016                 sparam_mbox->vport = vport;
1017                 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1018                 rc = lpfc_sli_issue_mbox(phba, sparam_mbox,
1019                                     (MBX_NOWAIT | MBX_STOP_IOCB));
1020                 if (rc == MBX_NOT_FINISHED) {
1021                         mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
1022                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1023                         kfree(mp);
1024                         mempool_free(sparam_mbox, phba->mbox_mem_pool);
1025                         if (cfglink_mbox)
1026                                 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1027                         goto out;
1028                 }
1029         }
1030
1031         if (cfglink_mbox) {
1032                 vport->port_state = LPFC_LOCAL_CFG_LINK;
1033                 lpfc_config_link(phba, cfglink_mbox);
1034                 cfglink_mbox->vport = vport;
1035                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
1036                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox,
1037                                     (MBX_NOWAIT | MBX_STOP_IOCB));
1038                 if (rc != MBX_NOT_FINISHED)
1039                         return;
1040                 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1041         }
1042 out:
1043         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1044         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1045                 "%d (%d):0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
1046                 phba->brd_no, vport->vpi,
1047                 vport->port_state, sparam_mbox, cfglink_mbox);
1048
1049         lpfc_issue_clear_la(phba, vport);
1050         return;
1051 }
1052
1053 static void
1054 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
1055 {
1056         uint32_t control;
1057         struct lpfc_sli *psli = &phba->sli;
1058
1059         lpfc_linkdown(phba);
1060
1061         /* turn on Link Attention interrupts - no CLEAR_LA needed */
1062         spin_lock_irq(&phba->hbalock);
1063         psli->sli_flag |= LPFC_PROCESS_LA;
1064         control = readl(phba->HCregaddr);
1065         control |= HC_LAINT_ENA;
1066         writel(control, phba->HCregaddr);
1067         readl(phba->HCregaddr); /* flush */
1068         spin_unlock_irq(&phba->hbalock);
1069 }
1070
1071 /*
1072  * This routine handles processing a READ_LA mailbox
1073  * command upon completion. It is setup in the LPFC_MBOXQ
1074  * as the completion routine when the command is
1075  * handed off to the SLI layer.
1076  */
1077 void
1078 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1079 {
1080         struct lpfc_vport *vport = pmb->vport;
1081         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1082         READ_LA_VAR *la;
1083         MAILBOX_t *mb = &pmb->mb;
1084         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1085
1086         /* Check for error */
1087         if (mb->mbxStatus) {
1088                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1089                                 "%d:1307 READ_LA mbox error x%x state x%x\n",
1090                                 phba->brd_no, mb->mbxStatus, vport->port_state);
1091                 lpfc_mbx_issue_link_down(phba);
1092                 phba->link_state = LPFC_HBA_ERROR;
1093                 goto lpfc_mbx_cmpl_read_la_free_mbuf;
1094         }
1095
1096         la = (READ_LA_VAR *) & pmb->mb.un.varReadLA;
1097
1098         memcpy(&phba->alpa_map[0], mp->virt, 128);
1099
1100         spin_lock_irq(shost->host_lock);
1101         if (la->pb)
1102                 vport->fc_flag |= FC_BYPASSED_MODE;
1103         else
1104                 vport->fc_flag &= ~FC_BYPASSED_MODE;
1105         spin_unlock_irq(shost->host_lock);
1106
1107         if (((phba->fc_eventTag + 1) < la->eventTag) ||
1108             (phba->fc_eventTag == la->eventTag)) {
1109                 phba->fc_stat.LinkMultiEvent++;
1110                 if (la->attType == AT_LINK_UP)
1111                         if (phba->fc_eventTag != 0)
1112                                 lpfc_linkdown(phba);
1113         }
1114
1115         phba->fc_eventTag = la->eventTag;
1116
1117         if (la->attType == AT_LINK_UP) {
1118                 phba->fc_stat.LinkUp++;
1119                 if (phba->link_flag & LS_LOOPBACK_MODE) {
1120                         lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1121                                 "%d:1306 Link Up Event in loop back mode "
1122                                 "x%x received Data: x%x x%x x%x x%x\n",
1123                                 phba->brd_no, la->eventTag, phba->fc_eventTag,
1124                                 la->granted_AL_PA, la->UlnkSpeed,
1125                                 phba->alpa_map[0]);
1126                 } else {
1127                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1128                                 "%d:1303 Link Up Event x%x received "
1129                                 "Data: x%x x%x x%x x%x\n",
1130                                 phba->brd_no, la->eventTag, phba->fc_eventTag,
1131                                 la->granted_AL_PA, la->UlnkSpeed,
1132                                 phba->alpa_map[0]);
1133                 }
1134                 lpfc_mbx_process_link_up(phba, la);
1135         } else {
1136                 phba->fc_stat.LinkDown++;
1137                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1138                                 "%d:1305 Link Down Event x%x received "
1139                                 "Data: x%x x%x x%x\n",
1140                                 phba->brd_no, la->eventTag, phba->fc_eventTag,
1141                                 phba->pport->port_state, vport->fc_flag);
1142                 lpfc_mbx_issue_link_down(phba);
1143         }
1144
1145 lpfc_mbx_cmpl_read_la_free_mbuf:
1146         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1147         kfree(mp);
1148         mempool_free(pmb, phba->mbox_mem_pool);
1149         return;
1150 }
1151
1152 /*
1153  * This routine handles processing a REG_LOGIN mailbox
1154  * command upon completion. It is setup in the LPFC_MBOXQ
1155  * as the completion routine when the command is
1156  * handed off to the SLI layer.
1157  */
1158 void
1159 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1160 {
1161         struct lpfc_vport  *vport = pmb->vport;
1162         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1163         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1164
1165         pmb->context1 = NULL;
1166
1167         /* Good status, call state machine */
1168         lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
1169         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1170         kfree(mp);
1171         mempool_free(pmb, phba->mbox_mem_pool);
1172         lpfc_nlp_put(ndlp);
1173
1174         return;
1175 }
1176
1177 static void
1178 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1179 {
1180         MAILBOX_t *mb = &pmb->mb;
1181         struct lpfc_vport *vport = pmb->vport;
1182         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1183
1184         switch (mb->mbxStatus) {
1185         case 0x0011:
1186         case 0x0020:
1187         case 0x9700:
1188                 lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
1189                                 "%d (%d):0911 cmpl_unreg_vpi, "
1190                                 "mb status = 0x%x\n",
1191                                 phba->brd_no, vport->vpi, mb->mbxStatus);
1192                 break;
1193         }
1194         vport->unreg_vpi_cmpl = VPORT_OK;
1195         mempool_free(pmb, phba->mbox_mem_pool);
1196         /*
1197          * This shost reference might have been taken at the beginning of
1198          * lpfc_vport_delete()
1199          */
1200         if (vport->load_flag & FC_UNLOADING)
1201                 scsi_host_put(shost);
1202 }
1203
1204 void
1205 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
1206 {
1207         struct lpfc_hba  *phba = vport->phba;
1208         LPFC_MBOXQ_t *mbox;
1209         int rc;
1210
1211         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1212         if (!mbox)
1213                 return;
1214
1215         lpfc_unreg_vpi(phba, vport->vpi, mbox);
1216         mbox->vport = vport;
1217         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
1218         rc = lpfc_sli_issue_mbox(phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB));
1219         if (rc == MBX_NOT_FINISHED) {
1220                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_VPORT,
1221                                 "%d (%d):1800 Could not issue unreg_vpi\n",
1222                                 phba->brd_no, vport->vpi);
1223                 mempool_free(mbox, phba->mbox_mem_pool);
1224                 vport->unreg_vpi_cmpl = VPORT_ERROR;
1225         }
1226 }
1227
1228 static void
1229 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1230 {
1231         struct lpfc_vport *vport = pmb->vport;
1232         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1233         MAILBOX_t *mb = &pmb->mb;
1234
1235         switch (mb->mbxStatus) {
1236         case 0x0011:
1237         case 0x9601:
1238         case 0x9602:
1239                 lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
1240                                 "%d (%d):0912 cmpl_reg_vpi, mb status = 0x%x\n",
1241                                 phba->brd_no, vport->vpi, mb->mbxStatus);
1242                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1243                 spin_lock_irq(shost->host_lock);
1244                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1245                 spin_unlock_irq(shost->host_lock);
1246                 vport->fc_myDID = 0;
1247                 goto out;
1248         }
1249
1250         vport->num_disc_nodes = 0;
1251         /* go thru NPR list and issue ELS PLOGIs */
1252         if (vport->fc_npr_cnt)
1253                 lpfc_els_disc_plogi(vport);
1254
1255         if (!vport->num_disc_nodes) {
1256                 spin_lock_irq(shost->host_lock);
1257                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1258                 spin_unlock_irq(shost->host_lock);
1259                 lpfc_can_disctmo(vport);
1260         }
1261         vport->port_state = LPFC_VPORT_READY;
1262
1263 out:
1264         mempool_free(pmb, phba->mbox_mem_pool);
1265         return;
1266 }
1267
1268 /*
1269  * This routine handles processing a Fabric REG_LOGIN mailbox
1270  * command upon completion. It is setup in the LPFC_MBOXQ
1271  * as the completion routine when the command is
1272  * handed off to the SLI layer.
1273  */
1274 void
1275 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1276 {
1277         struct lpfc_vport *vport = pmb->vport;
1278         MAILBOX_t *mb = &pmb->mb;
1279         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1280         struct lpfc_nodelist *ndlp;
1281         struct lpfc_vport **vports;
1282         int i;
1283
1284         ndlp = (struct lpfc_nodelist *) pmb->context2;
1285         pmb->context1 = NULL;
1286         pmb->context2 = NULL;
1287         if (mb->mbxStatus) {
1288                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1289                 kfree(mp);
1290                 mempool_free(pmb, phba->mbox_mem_pool);
1291                 lpfc_nlp_put(ndlp);
1292
1293                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1294                         /* FLOGI failed, use loop map to make discovery list */
1295                         lpfc_disc_list_loopmap(vport);
1296
1297                         /* Start discovery */
1298                         lpfc_disc_start(vport);
1299                         return;
1300                 }
1301
1302                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1303                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1304                         "%d (%d):0258 Register Fabric login error: 0x%x\n",
1305                         phba->brd_no, vport->vpi, mb->mbxStatus);
1306
1307                 return;
1308         }
1309
1310         ndlp->nlp_rpi = mb->un.varWords[0];
1311         ndlp->nlp_type |= NLP_FABRIC;
1312         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1313
1314         lpfc_nlp_put(ndlp);     /* Drop the reference from the mbox */
1315
1316         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
1317                 vports = lpfc_create_vport_work_array(phba);
1318                 if (vports != NULL)
1319                         for(i = 0;
1320                             i < LPFC_MAX_VPORTS && vports[i] != NULL;
1321                             i++) {
1322                                 if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
1323                                         continue;
1324                                 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1325                                         lpfc_initial_fdisc(vports[i]);
1326                                 else if (phba->sli3_options &
1327                                                 LPFC_SLI3_NPIV_ENABLED) {
1328                                         lpfc_vport_set_state(vports[i],
1329                                                 FC_VPORT_NO_FABRIC_SUPP);
1330                                         lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
1331                                                         "%d (%d):0259 No NPIV "
1332                                                         "Fabric support\n",
1333                                                         phba->brd_no,
1334                                                         vports[i]->vpi);
1335                                 }
1336                         }
1337                 lpfc_destroy_vport_work_array(vports);
1338                 lpfc_do_scr_ns_plogi(phba, vport);
1339         }
1340
1341         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1342         kfree(mp);
1343         mempool_free(pmb, phba->mbox_mem_pool);
1344         return;
1345 }
1346
1347 /*
1348  * This routine handles processing a NameServer REG_LOGIN mailbox
1349  * command upon completion. It is setup in the LPFC_MBOXQ
1350  * as the completion routine when the command is
1351  * handed off to the SLI layer.
1352  */
1353 void
1354 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1355 {
1356         MAILBOX_t *mb = &pmb->mb;
1357         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1358         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1359         struct lpfc_vport *vport = pmb->vport;
1360
1361         if (mb->mbxStatus) {
1362 out:
1363                 lpfc_nlp_put(ndlp);
1364                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1365                 kfree(mp);
1366                 mempool_free(pmb, phba->mbox_mem_pool);
1367                 lpfc_drop_node(vport, ndlp);
1368
1369                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1370                         /*
1371                          * RegLogin failed, use loop map to make discovery
1372                          * list
1373                          */
1374                         lpfc_disc_list_loopmap(vport);
1375
1376                         /* Start discovery */
1377                         lpfc_disc_start(vport);
1378                         return;
1379                 }
1380                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1381                 lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
1382                         "%d (%d):0260 Register NameServer error: 0x%x\n",
1383                         phba->brd_no, vport->vpi, mb->mbxStatus);
1384                 return;
1385         }
1386
1387         pmb->context1 = NULL;
1388
1389         ndlp->nlp_rpi = mb->un.varWords[0];
1390         ndlp->nlp_type |= NLP_FABRIC;
1391         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1392
1393         if (vport->port_state < LPFC_VPORT_READY) {
1394                 /* Link up discovery requires Fabric registration. */
1395                 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
1396                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
1397                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
1398                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
1399                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
1400
1401                 /* Issue SCR just before NameServer GID_FT Query */
1402                 lpfc_issue_els_scr(vport, SCR_DID, 0);
1403         }
1404
1405         vport->fc_ns_retry = 0;
1406         /* Good status, issue CT Request to NameServer */
1407         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
1408                 /* Cannot issue NameServer Query, so finish up discovery */
1409                 goto out;
1410         }
1411
1412         lpfc_nlp_put(ndlp);
1413         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1414         kfree(mp);
1415         mempool_free(pmb, phba->mbox_mem_pool);
1416
1417         return;
1418 }
1419
1420 static void
1421 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1422 {
1423         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1424         struct fc_rport  *rport;
1425         struct lpfc_rport_data *rdata;
1426         struct fc_rport_identifiers rport_ids;
1427         struct lpfc_hba  *phba = vport->phba;
1428
1429         /* Remote port has reappeared. Re-register w/ FC transport */
1430         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
1431         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
1432         rport_ids.port_id = ndlp->nlp_DID;
1433         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1434
1435         /*
1436          * We leave our node pointer in rport->dd_data when we unregister a
1437          * FCP target port.  But fc_remote_port_add zeros the space to which
1438          * rport->dd_data points.  So, if we're reusing a previously
1439          * registered port, drop the reference that we took the last time we
1440          * registered the port.
1441          */
1442         if (ndlp->rport && ndlp->rport->dd_data &&
1443             ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp) {
1444                 lpfc_nlp_put(ndlp);
1445         }
1446
1447         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
1448                 "rport add:       did:x%x flg:x%x type x%x",
1449                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1450
1451         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
1452         if (!rport || !get_device(&rport->dev)) {
1453                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
1454                            "Warning: fc_remote_port_add failed\n");
1455                 return;
1456         }
1457
1458         /* initialize static port data */
1459         rport->maxframe_size = ndlp->nlp_maxframe;
1460         rport->supported_classes = ndlp->nlp_class_sup;
1461         rdata = rport->dd_data;
1462         rdata->pnode = lpfc_nlp_get(ndlp);
1463
1464         if (ndlp->nlp_type & NLP_FCP_TARGET)
1465                 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1466         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
1467                 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
1468
1469
1470         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
1471                 fc_remote_port_rolechg(rport, rport_ids.roles);
1472
1473         if ((rport->scsi_target_id != -1) &&
1474             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
1475                 ndlp->nlp_sid = rport->scsi_target_id;
1476         }
1477         return;
1478 }
1479
1480 static void
1481 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
1482 {
1483         struct fc_rport *rport = ndlp->rport;
1484
1485         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
1486                 "rport delete:    did:x%x flg:x%x type x%x",
1487                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1488
1489         fc_remote_port_delete(rport);
1490
1491         return;
1492 }
1493
1494 static void
1495 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
1496 {
1497         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1498
1499         spin_lock_irq(shost->host_lock);
1500         switch (state) {
1501         case NLP_STE_UNUSED_NODE:
1502                 vport->fc_unused_cnt += count;
1503                 break;
1504         case NLP_STE_PLOGI_ISSUE:
1505                 vport->fc_plogi_cnt += count;
1506                 break;
1507         case NLP_STE_ADISC_ISSUE:
1508                 vport->fc_adisc_cnt += count;
1509                 break;
1510         case NLP_STE_REG_LOGIN_ISSUE:
1511                 vport->fc_reglogin_cnt += count;
1512                 break;
1513         case NLP_STE_PRLI_ISSUE:
1514                 vport->fc_prli_cnt += count;
1515                 break;
1516         case NLP_STE_UNMAPPED_NODE:
1517                 vport->fc_unmap_cnt += count;
1518                 break;
1519         case NLP_STE_MAPPED_NODE:
1520                 vport->fc_map_cnt += count;
1521                 break;
1522         case NLP_STE_NPR_NODE:
1523                 vport->fc_npr_cnt += count;
1524                 break;
1525         }
1526         spin_unlock_irq(shost->host_lock);
1527 }
1528
1529 static void
1530 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1531                        int old_state, int new_state)
1532 {
1533         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1534
1535         if (new_state == NLP_STE_UNMAPPED_NODE) {
1536                 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1537                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1538                 ndlp->nlp_type |= NLP_FC_NODE;
1539         }
1540         if (new_state == NLP_STE_MAPPED_NODE)
1541                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1542         if (new_state == NLP_STE_NPR_NODE)
1543                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
1544
1545         /* Transport interface */
1546         if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
1547                             old_state == NLP_STE_UNMAPPED_NODE)) {
1548                 vport->phba->nport_event_cnt++;
1549                 lpfc_unregister_remote_port(ndlp);
1550         }
1551
1552         if (new_state ==  NLP_STE_MAPPED_NODE ||
1553             new_state == NLP_STE_UNMAPPED_NODE) {
1554                 vport->phba->nport_event_cnt++;
1555                 /*
1556                  * Tell the fc transport about the port, if we haven't
1557                  * already. If we have, and it's a scsi entity, be
1558                  * sure to unblock any attached scsi devices
1559                  */
1560                 lpfc_register_remote_port(vport, ndlp);
1561         }
1562         /*
1563          * if we added to Mapped list, but the remote port
1564          * registration failed or assigned a target id outside
1565          * our presentable range - move the node to the
1566          * Unmapped List
1567          */
1568         if (new_state == NLP_STE_MAPPED_NODE &&
1569             (!ndlp->rport ||
1570              ndlp->rport->scsi_target_id == -1 ||
1571              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
1572                 spin_lock_irq(shost->host_lock);
1573                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
1574                 spin_unlock_irq(shost->host_lock);
1575                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1576         }
1577 }
1578
1579 static char *
1580 lpfc_nlp_state_name(char *buffer, size_t size, int state)
1581 {
1582         static char *states[] = {
1583                 [NLP_STE_UNUSED_NODE] = "UNUSED",
1584                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
1585                 [NLP_STE_ADISC_ISSUE] = "ADISC",
1586                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
1587                 [NLP_STE_PRLI_ISSUE] = "PRLI",
1588                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
1589                 [NLP_STE_MAPPED_NODE] = "MAPPED",
1590                 [NLP_STE_NPR_NODE] = "NPR",
1591         };
1592
1593         if (state < ARRAY_SIZE(states) && states[state])
1594                 strlcpy(buffer, states[state], size);
1595         else
1596                 snprintf(buffer, size, "unknown (%d)", state);
1597         return buffer;
1598 }
1599
1600 void
1601 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1602                    int state)
1603 {
1604         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1605         int  old_state = ndlp->nlp_state;
1606         char name1[16], name2[16];
1607
1608         lpfc_printf_log(vport->phba, KERN_INFO, LOG_NODE,
1609                         "%d (%d):0904 NPort state transition x%06x, %s -> %s\n",
1610                         vport->phba->brd_no, vport->vpi,
1611                         ndlp->nlp_DID,
1612                         lpfc_nlp_state_name(name1, sizeof(name1), old_state),
1613                         lpfc_nlp_state_name(name2, sizeof(name2), state));
1614
1615         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1616                 "node statechg    did:x%x old:%d ste:%d",
1617                 ndlp->nlp_DID, old_state, state);
1618
1619         if (old_state == NLP_STE_NPR_NODE &&
1620             (ndlp->nlp_flag & NLP_DELAY_TMO) != 0 &&
1621             state != NLP_STE_NPR_NODE)
1622                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1623         if (old_state == NLP_STE_UNMAPPED_NODE) {
1624                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
1625                 ndlp->nlp_type &= ~NLP_FC_NODE;
1626         }
1627
1628         if (list_empty(&ndlp->nlp_listp)) {
1629                 spin_lock_irq(shost->host_lock);
1630                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1631                 spin_unlock_irq(shost->host_lock);
1632         } else if (old_state)
1633                 lpfc_nlp_counters(vport, old_state, -1);
1634
1635         ndlp->nlp_state = state;
1636         lpfc_nlp_counters(vport, state, 1);
1637         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
1638 }
1639
1640 void
1641 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1642 {
1643         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1644
1645         if ((ndlp->nlp_flag & NLP_DELAY_TMO) != 0)
1646                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1647         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1648                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1649         spin_lock_irq(shost->host_lock);
1650         list_del_init(&ndlp->nlp_listp);
1651         spin_unlock_irq(shost->host_lock);
1652         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
1653                                NLP_STE_UNUSED_NODE);
1654 }
1655
1656 void
1657 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1658 {
1659         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1660
1661         if ((ndlp->nlp_flag & NLP_DELAY_TMO) != 0)
1662                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1663         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1664                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1665         spin_lock_irq(shost->host_lock);
1666         list_del_init(&ndlp->nlp_listp);
1667         ndlp->nlp_flag &= ~NLP_TARGET_REMOVE;
1668         spin_unlock_irq(shost->host_lock);
1669         lpfc_nlp_put(ndlp);
1670 }
1671
1672 /*
1673  * Start / ReStart rescue timer for Discovery / RSCN handling
1674  */
1675 void
1676 lpfc_set_disctmo(struct lpfc_vport *vport)
1677 {
1678         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1679         struct lpfc_hba  *phba = vport->phba;
1680         uint32_t tmo;
1681
1682         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
1683                 /* For FAN, timeout should be greater then edtov */
1684                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
1685         } else {
1686                 /* Normal discovery timeout should be > then ELS/CT timeout
1687                  * FC spec states we need 3 * ratov for CT requests
1688                  */
1689                 tmo = ((phba->fc_ratov * 3) + 3);
1690         }
1691
1692
1693         if (!timer_pending(&vport->fc_disctmo)) {
1694                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1695                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
1696                         tmo, vport->port_state, vport->fc_flag);
1697         }
1698
1699         mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
1700         spin_lock_irq(shost->host_lock);
1701         vport->fc_flag |= FC_DISC_TMO;
1702         spin_unlock_irq(shost->host_lock);
1703
1704         /* Start Discovery Timer state <hba_state> */
1705         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
1706                         "%d (%d):0247 Start Discovery Timer state x%x "
1707                         "Data: x%x x%lx x%x x%x\n",
1708                         phba->brd_no, vport->vpi, vport->port_state, tmo,
1709                         (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
1710                         vport->fc_adisc_cnt);
1711
1712         return;
1713 }
1714
1715 /*
1716  * Cancel rescue timer for Discovery / RSCN handling
1717  */
1718 int
1719 lpfc_can_disctmo(struct lpfc_vport *vport)
1720 {
1721         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1722         struct lpfc_hba  *phba = vport->phba;
1723         unsigned long iflags;
1724
1725         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1726                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
1727                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1728
1729         /* Turn off discovery timer if its running */
1730         if (vport->fc_flag & FC_DISC_TMO) {
1731                 spin_lock_irqsave(shost->host_lock, iflags);
1732                 vport->fc_flag &= ~FC_DISC_TMO;
1733                 spin_unlock_irqrestore(shost->host_lock, iflags);
1734                 del_timer_sync(&vport->fc_disctmo);
1735                 spin_lock_irqsave(&vport->work_port_lock, iflags);
1736                 vport->work_port_events &= ~WORKER_DISC_TMO;
1737                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
1738         }
1739
1740         /* Cancel Discovery Timer state <hba_state> */
1741         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
1742                         "%d (%d):0248 Cancel Discovery Timer state x%x "
1743                         "Data: x%x x%x x%x\n",
1744                         phba->brd_no, vport->vpi, vport->port_state,
1745                         vport->fc_flag, vport->fc_plogi_cnt,
1746                         vport->fc_adisc_cnt);
1747
1748         return 0;
1749 }
1750
1751 /*
1752  * Check specified ring for outstanding IOCB on the SLI queue
1753  * Return true if iocb matches the specified nport
1754  */
1755 int
1756 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
1757                     struct lpfc_sli_ring *pring,
1758                     struct lpfc_iocbq *iocb,
1759                     struct lpfc_nodelist *ndlp)
1760 {
1761         struct lpfc_sli *psli = &phba->sli;
1762         IOCB_t *icmd = &iocb->iocb;
1763         struct lpfc_vport    *vport = ndlp->vport;
1764
1765         if (iocb->vport != vport)
1766                 return 0;
1767
1768         if (pring->ringno == LPFC_ELS_RING) {
1769                 switch (icmd->ulpCommand) {
1770                 case CMD_GEN_REQUEST64_CR:
1771                         if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi)
1772                                 return 1;
1773                 case CMD_ELS_REQUEST64_CR:
1774                         if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
1775                                 return 1;
1776                 case CMD_XMIT_ELS_RSP64_CX:
1777                         if (iocb->context1 == (uint8_t *) ndlp)
1778                                 return 1;
1779                 }
1780         } else if (pring->ringno == psli->extra_ring) {
1781
1782         } else if (pring->ringno == psli->fcp_ring) {
1783                 /* Skip match check if waiting to relogin to FCP target */
1784                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
1785                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
1786                         return 0;
1787                 }
1788                 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
1789                         return 1;
1790                 }
1791         } else if (pring->ringno == psli->next_ring) {
1792
1793         }
1794         return 0;
1795 }
1796
1797 /*
1798  * Free resources / clean up outstanding I/Os
1799  * associated with nlp_rpi in the LPFC_NODELIST entry.
1800  */
1801 static int
1802 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
1803 {
1804         LIST_HEAD(completions);
1805         struct lpfc_sli *psli;
1806         struct lpfc_sli_ring *pring;
1807         struct lpfc_iocbq *iocb, *next_iocb;
1808         IOCB_t *icmd;
1809         uint32_t rpi, i;
1810
1811         lpfc_fabric_abort_nport(ndlp);
1812
1813         /*
1814          * Everything that matches on txcmplq will be returned
1815          * by firmware with a no rpi error.
1816          */
1817         psli = &phba->sli;
1818         rpi = ndlp->nlp_rpi;
1819         if (rpi) {
1820                 /* Now process each ring */
1821                 for (i = 0; i < psli->num_rings; i++) {
1822                         pring = &psli->ring[i];
1823
1824                         spin_lock_irq(&phba->hbalock);
1825                         list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
1826                                                  list) {
1827                                 /*
1828                                  * Check to see if iocb matches the nport we are
1829                                  * looking for
1830                                  */
1831                                 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
1832                                                          ndlp))) {
1833                                         /* It matches, so deque and call compl
1834                                            with an error */
1835                                         list_move_tail(&iocb->list,
1836                                                        &completions);
1837                                         pring->txq_cnt--;
1838                                 }
1839                         }
1840                         spin_unlock_irq(&phba->hbalock);
1841                 }
1842         }
1843
1844         while (!list_empty(&completions)) {
1845                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
1846                 list_del_init(&iocb->list);
1847
1848                 if (!iocb->iocb_cmpl)
1849                         lpfc_sli_release_iocbq(phba, iocb);
1850                 else {
1851                         icmd = &iocb->iocb;
1852                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1853                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1854                         (iocb->iocb_cmpl)(phba, iocb, iocb);
1855                 }
1856         }
1857
1858         return 0;
1859 }
1860
1861 /*
1862  * Free rpi associated with LPFC_NODELIST entry.
1863  * This routine is called from lpfc_freenode(), when we are removing
1864  * a LPFC_NODELIST entry. It is also called if the driver initiates a
1865  * LOGO that completes successfully, and we are waiting to PLOGI back
1866  * to the remote NPort. In addition, it is called after we receive
1867  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
1868  * we are waiting to PLOGI back to the remote NPort.
1869  */
1870 int
1871 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1872 {
1873         struct lpfc_hba *phba = vport->phba;
1874         LPFC_MBOXQ_t    *mbox;
1875         int rc;
1876
1877         if (ndlp->nlp_rpi) {
1878                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1879                 if (mbox) {
1880                         lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
1881                         mbox->vport = vport;
1882                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1883                         rc = lpfc_sli_issue_mbox(phba, mbox,
1884                                                  (MBX_NOWAIT | MBX_STOP_IOCB));
1885                         if (rc == MBX_NOT_FINISHED)
1886                                 mempool_free(mbox, phba->mbox_mem_pool);
1887                 }
1888                 lpfc_no_rpi(phba, ndlp);
1889                 ndlp->nlp_rpi = 0;
1890                 return 1;
1891         }
1892         return 0;
1893 }
1894
1895 void
1896 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
1897 {
1898         struct lpfc_hba  *phba  = vport->phba;
1899         LPFC_MBOXQ_t     *mbox;
1900         int rc;
1901
1902         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1903         if (mbox) {
1904                 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
1905                 mbox->vport = vport;
1906                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1907                 rc = lpfc_sli_issue_mbox(phba, mbox,
1908                                          (MBX_NOWAIT | MBX_STOP_IOCB));
1909                 if (rc == MBX_NOT_FINISHED) {
1910                         mempool_free(mbox, phba->mbox_mem_pool);
1911                 }
1912         }
1913 }
1914
1915 void
1916 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
1917 {
1918         struct lpfc_hba  *phba  = vport->phba;
1919         LPFC_MBOXQ_t     *mbox;
1920         int rc;
1921
1922         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1923         if (mbox) {
1924                 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
1925                 mbox->vport = vport;
1926                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1927                 rc = lpfc_sli_issue_mbox(phba, mbox,
1928                                          (MBX_NOWAIT | MBX_STOP_IOCB));
1929                 if (rc == MBX_NOT_FINISHED) {
1930                         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_VPORT,
1931                                         "%d (%d):1815 Could not issue "
1932                                         "unreg_did (default rpis)\n",
1933                                         phba->brd_no, vport->vpi);
1934                         mempool_free(mbox, phba->mbox_mem_pool);
1935                 }
1936         }
1937 }
1938
1939 /*
1940  * Free resources associated with LPFC_NODELIST entry
1941  * so it can be freed.
1942  */
1943 static int
1944 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1945 {
1946         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1947         struct lpfc_hba  *phba = vport->phba;
1948         LPFC_MBOXQ_t *mb, *nextmb;
1949         struct lpfc_dmabuf *mp;
1950
1951         /* Cleanup node for NPort <nlp_DID> */
1952         lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
1953                         "%d (%d):0900 Cleanup node for NPort x%x "
1954                         "Data: x%x x%x x%x\n",
1955                         phba->brd_no, vport->vpi, ndlp->nlp_DID, ndlp->nlp_flag,
1956                         ndlp->nlp_state, ndlp->nlp_rpi);
1957
1958         lpfc_dequeue_node(vport, ndlp);
1959
1960         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1961         if ((mb = phba->sli.mbox_active)) {
1962                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1963                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1964                         mb->context2 = NULL;
1965                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1966                 }
1967         }
1968
1969         spin_lock_irq(&phba->hbalock);
1970         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1971                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1972                     (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1973                         mp = (struct lpfc_dmabuf *) (mb->context1);
1974                         if (mp) {
1975                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1976                                 kfree(mp);
1977                         }
1978                         list_del(&mb->list);
1979                         mempool_free(mb, phba->mbox_mem_pool);
1980                         lpfc_nlp_put(ndlp);
1981                 }
1982         }
1983         spin_unlock_irq(&phba->hbalock);
1984
1985         lpfc_els_abort(phba,ndlp);
1986         spin_lock_irq(shost->host_lock);
1987         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
1988         spin_unlock_irq(shost->host_lock);
1989
1990         ndlp->nlp_last_elscmd = 0;
1991         del_timer_sync(&ndlp->nlp_delayfunc);
1992
1993         if (!list_empty(&ndlp->els_retry_evt.evt_listp))
1994                 list_del_init(&ndlp->els_retry_evt.evt_listp);
1995         if (!list_empty(&ndlp->dev_loss_evt.evt_listp))
1996                 list_del_init(&ndlp->dev_loss_evt.evt_listp);
1997
1998         if (!list_empty(&ndlp->dev_loss_evt.evt_listp)) {
1999                 list_del_init(&ndlp->dev_loss_evt.evt_listp);
2000                 complete((struct completion *)(ndlp->dev_loss_evt.evt_arg2));
2001         }
2002
2003         lpfc_unreg_rpi(vport, ndlp);
2004
2005         return 0;
2006 }
2007
2008 /*
2009  * Check to see if we can free the nlp back to the freelist.
2010  * If we are in the middle of using the nlp in the discovery state
2011  * machine, defer the free till we reach the end of the state machine.
2012  */
2013 static void
2014 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2015 {
2016         struct lpfc_rport_data *rdata;
2017
2018         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
2019                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2020         }
2021
2022         lpfc_cleanup_node(vport, ndlp);
2023
2024         /*
2025          * We can get here with a non-NULL ndlp->rport because when we
2026          * unregister a rport we don't break the rport/node linkage.  So if we
2027          * do, make sure we don't leaving any dangling pointers behind.
2028          */
2029         if (ndlp->rport) {
2030                 rdata = ndlp->rport->dd_data;
2031                 rdata->pnode = NULL;
2032                 ndlp->rport = NULL;
2033         }
2034 }
2035
2036 static int
2037 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2038               uint32_t did)
2039 {
2040         D_ID mydid, ndlpdid, matchdid;
2041
2042         if (did == Bcast_DID)
2043                 return 0;
2044
2045         if (ndlp->nlp_DID == 0) {
2046                 return 0;
2047         }
2048
2049         /* First check for Direct match */
2050         if (ndlp->nlp_DID == did)
2051                 return 1;
2052
2053         /* Next check for area/domain identically equals 0 match */
2054         mydid.un.word = vport->fc_myDID;
2055         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
2056                 return 0;
2057         }
2058
2059         matchdid.un.word = did;
2060         ndlpdid.un.word = ndlp->nlp_DID;
2061         if (matchdid.un.b.id == ndlpdid.un.b.id) {
2062                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
2063                     (mydid.un.b.area == matchdid.un.b.area)) {
2064                         if ((ndlpdid.un.b.domain == 0) &&
2065                             (ndlpdid.un.b.area == 0)) {
2066                                 if (ndlpdid.un.b.id)
2067                                         return 1;
2068                         }
2069                         return 0;
2070                 }
2071
2072                 matchdid.un.word = ndlp->nlp_DID;
2073                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
2074                     (mydid.un.b.area == ndlpdid.un.b.area)) {
2075                         if ((matchdid.un.b.domain == 0) &&
2076                             (matchdid.un.b.area == 0)) {
2077                                 if (matchdid.un.b.id)
2078                                         return 1;
2079                         }
2080                 }
2081         }
2082         return 0;
2083 }
2084
2085 /* Search for a nodelist entry */
2086 static struct lpfc_nodelist *
2087 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2088 {
2089         struct lpfc_hba  *phba = vport->phba;
2090         struct lpfc_nodelist *ndlp;
2091         uint32_t data1;
2092
2093         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2094                 if (lpfc_matchdid(vport, ndlp, did)) {
2095                         data1 = (((uint32_t) ndlp->nlp_state << 24) |
2096                                  ((uint32_t) ndlp->nlp_xri << 16) |
2097                                  ((uint32_t) ndlp->nlp_type << 8) |
2098                                  ((uint32_t) ndlp->nlp_rpi & 0xff));
2099                         lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
2100                                         "%d (%d):0929 FIND node DID "
2101                                         " Data: x%p x%x x%x x%x\n",
2102                                         phba->brd_no, vport->vpi,
2103                                         ndlp, ndlp->nlp_DID,
2104                                         ndlp->nlp_flag, data1);
2105                         return ndlp;
2106                 }
2107         }
2108
2109         /* FIND node did <did> NOT FOUND */
2110         lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
2111                         "%d (%d):0932 FIND node did x%x NOT FOUND.\n",
2112                         phba->brd_no, vport->vpi, did);
2113         return NULL;
2114 }
2115
2116 struct lpfc_nodelist *
2117 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2118 {
2119         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2120         struct lpfc_nodelist *ndlp;
2121
2122         spin_lock_irq(shost->host_lock);
2123         ndlp = __lpfc_findnode_did(vport, did);
2124         spin_unlock_irq(shost->host_lock);
2125         return ndlp;
2126 }
2127
2128 struct lpfc_nodelist *
2129 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
2130 {
2131         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2132         struct lpfc_nodelist *ndlp;
2133
2134         ndlp = lpfc_findnode_did(vport, did);
2135         if (!ndlp) {
2136                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
2137                     lpfc_rscn_payload_check(vport, did) == 0)
2138                         return NULL;
2139                 ndlp = (struct lpfc_nodelist *)
2140                      mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
2141                 if (!ndlp)
2142                         return NULL;
2143                 lpfc_nlp_init(vport, ndlp, did);
2144                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2145                 spin_lock_irq(shost->host_lock);
2146                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2147                 spin_unlock_irq(shost->host_lock);
2148                 return ndlp;
2149         }
2150         if (vport->fc_flag & FC_RSCN_MODE) {
2151                 if (lpfc_rscn_payload_check(vport, did)) {
2152                         spin_lock_irq(shost->host_lock);
2153                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2154                         spin_unlock_irq(shost->host_lock);
2155
2156                         /* Since this node is marked for discovery,
2157                          * delay timeout is not needed.
2158                          */
2159                         if (ndlp->nlp_flag & NLP_DELAY_TMO)
2160                                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2161                 } else
2162                         ndlp = NULL;
2163         } else {
2164                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
2165                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE)
2166                         return NULL;
2167                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2168                 spin_lock_irq(shost->host_lock);
2169                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2170                 spin_unlock_irq(shost->host_lock);
2171         }
2172         return ndlp;
2173 }
2174
2175 /* Build a list of nodes to discover based on the loopmap */
2176 void
2177 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
2178 {
2179         struct lpfc_hba  *phba = vport->phba;
2180         int j;
2181         uint32_t alpa, index;
2182
2183         if (!lpfc_is_link_up(phba))
2184                 return;
2185
2186         if (phba->fc_topology != TOPOLOGY_LOOP)
2187                 return;
2188
2189         /* Check for loop map present or not */
2190         if (phba->alpa_map[0]) {
2191                 for (j = 1; j <= phba->alpa_map[0]; j++) {
2192                         alpa = phba->alpa_map[j];
2193                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
2194                                 continue;
2195                         lpfc_setup_disc_node(vport, alpa);
2196                 }
2197         } else {
2198                 /* No alpamap, so try all alpa's */
2199                 for (j = 0; j < FC_MAXLOOP; j++) {
2200                         /* If cfg_scan_down is set, start from highest
2201                          * ALPA (0xef) to lowest (0x1).
2202                          */
2203                         if (phba->cfg_scan_down)
2204                                 index = j;
2205                         else
2206                                 index = FC_MAXLOOP - j - 1;
2207                         alpa = lpfcAlpaArray[index];
2208                         if ((vport->fc_myDID & 0xff) == alpa)
2209                                 continue;
2210                         lpfc_setup_disc_node(vport, alpa);
2211                 }
2212         }
2213         return;
2214 }
2215
2216 void
2217 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
2218 {
2219         LPFC_MBOXQ_t *mbox;
2220         struct lpfc_sli *psli = &phba->sli;
2221         struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
2222         struct lpfc_sli_ring *fcp_ring   = &psli->ring[psli->fcp_ring];
2223         struct lpfc_sli_ring *next_ring  = &psli->ring[psli->next_ring];
2224         int  rc;
2225
2226         /*
2227          * if it's not a physical port or if we already send
2228          * clear_la then don't send it.
2229          */
2230         if ((phba->link_state >= LPFC_CLEAR_LA) ||
2231             (vport->port_type != LPFC_PHYSICAL_PORT))
2232                 return;
2233
2234                         /* Link up discovery */
2235         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
2236                 phba->link_state = LPFC_CLEAR_LA;
2237                 lpfc_clear_la(phba, mbox);
2238                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
2239                 mbox->vport = vport;
2240                 rc = lpfc_sli_issue_mbox(phba, mbox, (MBX_NOWAIT |
2241                                                       MBX_STOP_IOCB));
2242                 if (rc == MBX_NOT_FINISHED) {
2243                         mempool_free(mbox, phba->mbox_mem_pool);
2244                         lpfc_disc_flush_list(vport);
2245                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2246                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2247                         next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2248                         phba->link_state = LPFC_HBA_ERROR;
2249                 }
2250         }
2251 }
2252
2253 /* Reg_vpi to tell firmware to resume normal operations */
2254 void
2255 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
2256 {
2257         LPFC_MBOXQ_t *regvpimbox;
2258
2259         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2260         if (regvpimbox) {
2261                 lpfc_reg_vpi(phba, vport->vpi, vport->fc_myDID, regvpimbox);
2262                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
2263                 regvpimbox->vport = vport;
2264                 if (lpfc_sli_issue_mbox(phba, regvpimbox,
2265                                         (MBX_NOWAIT | MBX_STOP_IOCB))
2266                                         == MBX_NOT_FINISHED) {
2267                         mempool_free(regvpimbox, phba->mbox_mem_pool);
2268                 }
2269         }
2270 }
2271
2272 /* Start Link up / RSCN discovery on NPR nodes */
2273 void
2274 lpfc_disc_start(struct lpfc_vport *vport)
2275 {
2276         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2277         struct lpfc_hba  *phba = vport->phba;
2278         uint32_t num_sent;
2279         uint32_t clear_la_pending;
2280         int did_changed;
2281
2282         if (!lpfc_is_link_up(phba))
2283                 return;
2284
2285         if (phba->link_state == LPFC_CLEAR_LA)
2286                 clear_la_pending = 1;
2287         else
2288                 clear_la_pending = 0;
2289
2290         if (vport->port_state < LPFC_VPORT_READY)
2291                 vport->port_state = LPFC_DISC_AUTH;
2292
2293         lpfc_set_disctmo(vport);
2294
2295         if (vport->fc_prevDID == vport->fc_myDID)
2296                 did_changed = 0;
2297         else
2298                 did_changed = 1;
2299
2300         vport->fc_prevDID = vport->fc_myDID;
2301         vport->num_disc_nodes = 0;
2302
2303         /* Start Discovery state <hba_state> */
2304         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
2305                         "%d (%d):0202 Start Discovery hba state x%x "
2306                         "Data: x%x x%x x%x\n",
2307                         phba->brd_no, vport->vpi, vport->port_state,
2308                         vport->fc_flag, vport->fc_plogi_cnt,
2309                         vport->fc_adisc_cnt);
2310
2311         /* First do ADISCs - if any */
2312         num_sent = lpfc_els_disc_adisc(vport);
2313
2314         if (num_sent)
2315                 return;
2316
2317         /*
2318          * For SLI3, cmpl_reg_vpi will set port_state to READY, and
2319          * continue discovery.
2320          */
2321         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2322             !(vport->fc_flag & FC_RSCN_MODE)) {
2323                 lpfc_issue_reg_vpi(phba, vport);
2324                 return;
2325         }
2326
2327         /*
2328          * For SLI2, we need to set port_state to READY and continue
2329          * discovery.
2330          */
2331         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
2332                 /* If we get here, there is nothing to ADISC */
2333                 if (vport->port_type == LPFC_PHYSICAL_PORT)
2334                         lpfc_issue_clear_la(phba, vport);
2335
2336                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
2337                         vport->num_disc_nodes = 0;
2338                         /* go thru NPR nodes and issue ELS PLOGIs */
2339                         if (vport->fc_npr_cnt)
2340                                 lpfc_els_disc_plogi(vport);
2341
2342                         if (!vport->num_disc_nodes) {
2343                                 spin_lock_irq(shost->host_lock);
2344                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2345                                 spin_unlock_irq(shost->host_lock);
2346                                 lpfc_can_disctmo(vport);
2347                         }
2348                 }
2349                 vport->port_state = LPFC_VPORT_READY;
2350         } else {
2351                 /* Next do PLOGIs - if any */
2352                 num_sent = lpfc_els_disc_plogi(vport);
2353
2354                 if (num_sent)
2355                         return;
2356
2357                 if (vport->fc_flag & FC_RSCN_MODE) {
2358                         /* Check to see if more RSCNs came in while we
2359                          * were processing this one.
2360                          */
2361                         if ((vport->fc_rscn_id_cnt == 0) &&
2362                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
2363                                 spin_lock_irq(shost->host_lock);
2364                                 vport->fc_flag &= ~FC_RSCN_MODE;
2365                                 spin_unlock_irq(shost->host_lock);
2366                                 lpfc_can_disctmo(vport);
2367                         } else
2368                                 lpfc_els_handle_rscn(vport);
2369                 }
2370         }
2371         return;
2372 }
2373
2374 /*
2375  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
2376  *  ring the match the sppecified nodelist.
2377  */
2378 static void
2379 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
2380 {
2381         LIST_HEAD(completions);
2382         struct lpfc_sli *psli;
2383         IOCB_t     *icmd;
2384         struct lpfc_iocbq    *iocb, *next_iocb;
2385         struct lpfc_sli_ring *pring;
2386
2387         psli = &phba->sli;
2388         pring = &psli->ring[LPFC_ELS_RING];
2389
2390         /* Error matching iocb on txq or txcmplq
2391          * First check the txq.
2392          */
2393         spin_lock_irq(&phba->hbalock);
2394         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2395                 if (iocb->context1 != ndlp) {
2396                         continue;
2397                 }
2398                 icmd = &iocb->iocb;
2399                 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
2400                     (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
2401
2402                         list_move_tail(&iocb->list, &completions);
2403                         pring->txq_cnt--;
2404                 }
2405         }
2406
2407         /* Next check the txcmplq */
2408         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
2409                 if (iocb->context1 != ndlp) {
2410                         continue;
2411                 }
2412                 icmd = &iocb->iocb;
2413                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
2414                     icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
2415                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
2416                 }
2417         }
2418         spin_unlock_irq(&phba->hbalock);
2419
2420         while (!list_empty(&completions)) {
2421                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
2422                 list_del_init(&iocb->list);
2423
2424                 if (!iocb->iocb_cmpl)
2425                         lpfc_sli_release_iocbq(phba, iocb);
2426                 else {
2427                         icmd = &iocb->iocb;
2428                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2429                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
2430                         (iocb->iocb_cmpl) (phba, iocb, iocb);
2431                 }
2432         }
2433 }
2434
2435 void
2436 lpfc_disc_flush_list(struct lpfc_vport *vport)
2437 {
2438         struct lpfc_nodelist *ndlp, *next_ndlp;
2439         struct lpfc_hba *phba = vport->phba;
2440
2441         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
2442                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2443                                          nlp_listp) {
2444                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2445                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
2446                                 lpfc_free_tx(phba, ndlp);
2447                                 lpfc_nlp_put(ndlp);
2448                         }
2449                 }
2450         }
2451 }
2452
2453 void
2454 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
2455 {
2456         lpfc_els_flush_rscn(vport);
2457         lpfc_els_flush_cmd(vport);
2458         lpfc_disc_flush_list(vport);
2459 }
2460
2461 /*****************************************************************************/
2462 /*
2463  * NAME:     lpfc_disc_timeout
2464  *
2465  * FUNCTION: Fibre Channel driver discovery timeout routine.
2466  *
2467  * EXECUTION ENVIRONMENT: interrupt only
2468  *
2469  * CALLED FROM:
2470  *      Timer function
2471  *
2472  * RETURNS:
2473  *      none
2474  */
2475 /*****************************************************************************/
2476 void
2477 lpfc_disc_timeout(unsigned long ptr)
2478 {
2479         struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
2480         struct lpfc_hba   *phba = vport->phba;
2481         unsigned long flags = 0;
2482
2483         if (unlikely(!phba))
2484                 return;
2485
2486         if ((vport->work_port_events & WORKER_DISC_TMO) == 0) {
2487                 spin_lock_irqsave(&vport->work_port_lock, flags);
2488                 vport->work_port_events |= WORKER_DISC_TMO;
2489                 spin_unlock_irqrestore(&vport->work_port_lock, flags);
2490
2491                 spin_lock_irqsave(&phba->hbalock, flags);
2492                 if (phba->work_wait)
2493                         lpfc_worker_wake_up(phba);
2494                 spin_unlock_irqrestore(&phba->hbalock, flags);
2495         }
2496         return;
2497 }
2498
2499 static void
2500 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
2501 {
2502         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2503         struct lpfc_hba  *phba = vport->phba;
2504         struct lpfc_sli  *psli = &phba->sli;
2505         struct lpfc_nodelist *ndlp, *next_ndlp;
2506         LPFC_MBOXQ_t *initlinkmbox;
2507         int rc, clrlaerr = 0;
2508
2509         if (!(vport->fc_flag & FC_DISC_TMO))
2510                 return;
2511
2512         spin_lock_irq(shost->host_lock);
2513         vport->fc_flag &= ~FC_DISC_TMO;
2514         spin_unlock_irq(shost->host_lock);
2515
2516         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2517                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
2518                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
2519
2520         switch (vport->port_state) {
2521
2522         case LPFC_LOCAL_CFG_LINK:
2523         /* port_state is identically  LPFC_LOCAL_CFG_LINK while waiting for
2524          * FAN
2525          */
2526                                 /* FAN timeout */
2527                 lpfc_printf_log(phba, KERN_WARNING, LOG_DISCOVERY,
2528                                 "%d (%d):0221 FAN timeout\n",
2529                                 phba->brd_no, vport->vpi);
2530
2531                 /* Start discovery by sending FLOGI, clean up old rpis */
2532                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2533                                          nlp_listp) {
2534                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
2535                                 continue;
2536                         if (ndlp->nlp_type & NLP_FABRIC) {
2537                                 /* Clean up the ndlp on Fabric connections */
2538                                 lpfc_drop_node(vport, ndlp);
2539                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2540                                 /* Fail outstanding IO now since device
2541                                  * is marked for PLOGI.
2542                                  */
2543                                 lpfc_unreg_rpi(vport, ndlp);
2544                         }
2545                 }
2546                 if (vport->port_state != LPFC_FLOGI) {
2547                         vport->port_state = LPFC_FLOGI;
2548                         lpfc_set_disctmo(vport);
2549                         lpfc_initial_flogi(vport);
2550                 }
2551                 break;
2552
2553         case LPFC_FDISC:
2554         case LPFC_FLOGI:
2555         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
2556                 /* Initial FLOGI timeout */
2557                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
2558                                 "%d (%d):0222 Initial %s timeout\n",
2559                                 phba->brd_no, vport->vpi,
2560                                 vport->vpi ? "FLOGI" : "FDISC");
2561
2562                 /* Assume no Fabric and go on with discovery.
2563                  * Check for outstanding ELS FLOGI to abort.
2564                  */
2565
2566                 /* FLOGI failed, so just use loop map to make discovery list */
2567                 lpfc_disc_list_loopmap(vport);
2568
2569                 /* Start discovery */
2570                 lpfc_disc_start(vport);
2571                 break;
2572
2573         case LPFC_FABRIC_CFG_LINK:
2574         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
2575            NameServer login */
2576                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
2577                                 "%d (%d):0223 Timeout while waiting for "
2578                                 "NameServer login\n",
2579                                 phba->brd_no, vport->vpi);
2580
2581                 /* Next look for NameServer ndlp */
2582                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
2583                 if (ndlp)
2584                         lpfc_nlp_put(ndlp);
2585                 /* Start discovery */
2586                 lpfc_disc_start(vport);
2587                 break;
2588
2589         case LPFC_NS_QRY:
2590         /* Check for wait for NameServer Rsp timeout */
2591                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
2592                                 "%d (%d):0224 NameServer Query timeout "
2593                                 "Data: x%x x%x\n",
2594                                 phba->brd_no, vport->vpi,
2595                                 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2596
2597                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
2598                         /* Try it one more time */
2599                         vport->fc_ns_retry++;
2600                         rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
2601                                          vport->fc_ns_retry, 0);
2602                         if (rc == 0)
2603                                 break;
2604                 }
2605                 vport->fc_ns_retry = 0;
2606
2607                 /*
2608                  * Discovery is over.
2609                  * set port_state to PORT_READY if SLI2.
2610                  * cmpl_reg_vpi will set port_state to READY for SLI3.
2611                  */
2612                 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2613                         lpfc_issue_reg_vpi(phba, vport);
2614                 else  { /* NPIV Not enabled */
2615                         lpfc_issue_clear_la(phba, vport);
2616                         vport->port_state = LPFC_VPORT_READY;
2617                 }
2618
2619                 /* Setup and issue mailbox INITIALIZE LINK command */
2620                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2621                 if (!initlinkmbox) {
2622                         lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
2623                                         "%d (%d):0206 Device Discovery "
2624                                         "completion error\n",
2625                                         phba->brd_no, vport->vpi);
2626                         phba->link_state = LPFC_HBA_ERROR;
2627                         break;
2628                 }
2629
2630                 lpfc_linkdown(phba);
2631                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
2632                                phba->cfg_link_speed);
2633                 initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
2634                 initlinkmbox->vport = vport;
2635                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2636                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox,
2637                                          (MBX_NOWAIT | MBX_STOP_IOCB));
2638                 lpfc_set_loopback_flag(phba);
2639                 if (rc == MBX_NOT_FINISHED)
2640                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
2641
2642                 break;
2643
2644         case LPFC_DISC_AUTH:
2645         /* Node Authentication timeout */
2646                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
2647                                 "%d (%d):0227 Node Authentication timeout\n",
2648                                 phba->brd_no, vport->vpi);
2649                 lpfc_disc_flush_list(vport);
2650
2651                 /*
2652                  * set port_state to PORT_READY if SLI2.
2653                  * cmpl_reg_vpi will set port_state to READY for SLI3.
2654                  */
2655                 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2656                         lpfc_issue_reg_vpi(phba, vport);
2657                 else {  /* NPIV Not enabled */
2658                         lpfc_issue_clear_la(phba, vport);
2659                         vport->port_state = LPFC_VPORT_READY;
2660                 }
2661                 break;
2662
2663         case LPFC_VPORT_READY:
2664                 if (vport->fc_flag & FC_RSCN_MODE) {
2665                         lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
2666                                         "%d (%d):0231 RSCN timeout Data: x%x "
2667                                         "x%x\n",
2668                                         phba->brd_no, vport->vpi,
2669                                         vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2670
2671                         /* Cleanup any outstanding ELS commands */
2672                         lpfc_els_flush_cmd(vport);
2673
2674                         lpfc_els_flush_rscn(vport);
2675                         lpfc_disc_flush_list(vport);
2676                 }
2677                 break;
2678
2679         default:
2680                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
2681                                 "%d (%d):0229 Unexpected discovery timeout, "
2682                                 "vport State x%x\n",
2683                                 phba->brd_no, vport->vpi, vport->port_state);
2684
2685                 break;
2686         }
2687
2688         switch (phba->link_state) {
2689         case LPFC_CLEAR_LA:
2690                                 /* CLEAR LA timeout */
2691                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
2692                                 "%d (%d):0228 CLEAR LA timeout\n",
2693                                 phba->brd_no, vport->vpi);
2694                 clrlaerr = 1;
2695                 break;
2696
2697         case LPFC_LINK_UNKNOWN:
2698         case LPFC_WARM_START:
2699         case LPFC_INIT_START:
2700         case LPFC_INIT_MBX_CMDS:
2701         case LPFC_LINK_DOWN:
2702         case LPFC_LINK_UP:
2703         case LPFC_HBA_ERROR:
2704                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
2705                                 "%d (%d):0230 Unexpected timeout, hba link "
2706                                 "state x%x\n",
2707                                 phba->brd_no, vport->vpi, phba->link_state);
2708                 clrlaerr = 1;
2709                 break;
2710
2711         case LPFC_HBA_READY:
2712                 break;
2713         }
2714
2715         if (clrlaerr) {
2716                 lpfc_disc_flush_list(vport);
2717                 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2718                 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2719                 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2720                 vport->port_state = LPFC_VPORT_READY;
2721         }
2722
2723         return;
2724 }
2725
2726 /*
2727  * This routine handles processing a NameServer REG_LOGIN mailbox
2728  * command upon completion. It is setup in the LPFC_MBOXQ
2729  * as the completion routine when the command is
2730  * handed off to the SLI layer.
2731  */
2732 void
2733 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2734 {
2735         MAILBOX_t *mb = &pmb->mb;
2736         struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *) (pmb->context1);
2737         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2738         struct lpfc_vport    *vport = pmb->vport;
2739
2740         pmb->context1 = NULL;
2741
2742         ndlp->nlp_rpi = mb->un.varWords[0];
2743         ndlp->nlp_type |= NLP_FABRIC;
2744         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2745
2746         /*
2747          * Start issuing Fabric-Device Management Interface (FDMI) command to
2748          * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
2749          * fdmi-on=2 (supporting RPA/hostnmae)
2750          */
2751
2752         if (phba->cfg_fdmi_on == 1)
2753                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
2754         else
2755                 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
2756
2757                                 /* Mailbox took a reference to the node */
2758         lpfc_nlp_put(ndlp);
2759         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2760         kfree(mp);
2761         mempool_free(pmb, phba->mbox_mem_pool);
2762
2763         return;
2764 }
2765
2766 static int
2767 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
2768 {
2769         uint16_t *rpi = param;
2770
2771         return ndlp->nlp_rpi == *rpi;
2772 }
2773
2774 static int
2775 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
2776 {
2777         return memcmp(&ndlp->nlp_portname, param,
2778                       sizeof(ndlp->nlp_portname)) == 0;
2779 }
2780
2781 struct lpfc_nodelist *
2782 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
2783 {
2784         struct lpfc_nodelist *ndlp;
2785
2786         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2787                 if (ndlp->nlp_state != NLP_STE_UNUSED_NODE &&
2788                     filter(ndlp, param))
2789                         return ndlp;
2790         }
2791         return NULL;
2792 }
2793
2794 /*
2795  * Search node lists for a remote port matching filter criteria
2796  * Caller needs to hold host_lock before calling this routine.
2797  */
2798 struct lpfc_nodelist *
2799 lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
2800 {
2801         struct Scsi_Host     *shost = lpfc_shost_from_vport(vport);
2802         struct lpfc_nodelist *ndlp;
2803
2804         spin_lock_irq(shost->host_lock);
2805         ndlp = __lpfc_find_node(vport, filter, param);
2806         spin_unlock_irq(shost->host_lock);
2807         return ndlp;
2808 }
2809
2810 /*
2811  * This routine looks up the ndlp lists for the given RPI. If rpi found it
2812  * returns the node list element pointer else return NULL.
2813  */
2814 struct lpfc_nodelist *
2815 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
2816 {
2817         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
2818 }
2819
2820 struct lpfc_nodelist *
2821 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
2822 {
2823         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2824         struct lpfc_nodelist *ndlp;
2825
2826         spin_lock_irq(shost->host_lock);
2827         ndlp = __lpfc_findnode_rpi(vport, rpi);
2828         spin_unlock_irq(shost->host_lock);
2829         return ndlp;
2830 }
2831
2832 /*
2833  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
2834  * returns the node element list pointer else return NULL.
2835  */
2836 struct lpfc_nodelist *
2837 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
2838 {
2839         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2840         struct lpfc_nodelist *ndlp;
2841
2842         spin_lock_irq(shost->host_lock);
2843         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
2844         spin_unlock_irq(shost->host_lock);
2845         return ndlp;
2846 }
2847
2848 void
2849 lpfc_dev_loss_delay(unsigned long ptr)
2850 {
2851         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) ptr;
2852         struct lpfc_vport *vport = ndlp->vport;
2853         struct lpfc_hba   *phba = vport->phba;
2854         struct lpfc_work_evt  *evtp = &ndlp->dev_loss_evt;
2855         unsigned long flags;
2856
2857         evtp = &ndlp->dev_loss_evt;
2858
2859         spin_lock_irqsave(&phba->hbalock, flags);
2860         if (!list_empty(&evtp->evt_listp)) {
2861                 spin_unlock_irqrestore(&phba->hbalock, flags);
2862                 return;
2863         }
2864
2865         evtp->evt_arg1  = ndlp;
2866         evtp->evt       = LPFC_EVT_DEV_LOSS_DELAY;
2867         list_add_tail(&evtp->evt_listp, &phba->work_list);
2868         if (phba->work_wait)
2869                 lpfc_worker_wake_up(phba);
2870         spin_unlock_irqrestore(&phba->hbalock, flags);
2871         return;
2872 }
2873
2874 void
2875 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2876               uint32_t did)
2877 {
2878         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
2879         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
2880         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
2881         init_timer(&ndlp->nlp_delayfunc);
2882         ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
2883         ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
2884         ndlp->nlp_DID = did;
2885         ndlp->vport = vport;
2886         ndlp->nlp_sid = NLP_NO_SID;
2887         INIT_LIST_HEAD(&ndlp->nlp_listp);
2888         kref_init(&ndlp->kref);
2889
2890         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2891                 "node init:       did:x%x",
2892                 ndlp->nlp_DID, 0, 0);
2893
2894         return;
2895 }
2896
2897 void
2898 lpfc_nlp_release(struct kref *kref)
2899 {
2900         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
2901                                                   kref);
2902
2903         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2904                 "node release:    did:x%x flg:x%x type:x%x",
2905                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
2906
2907         lpfc_nlp_remove(ndlp->vport, ndlp);
2908         mempool_free(ndlp, ndlp->vport->phba->nlp_mem_pool);
2909 }
2910
2911 struct lpfc_nodelist *
2912 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
2913 {
2914         if (ndlp)
2915                 kref_get(&ndlp->kref);
2916         return ndlp;
2917 }
2918
2919 int
2920 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
2921 {
2922         return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0;
2923 }