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 *vport;
 353
 354         spin_lock_irq(&phba->hbalock);
 355         ha_copy = phba->work_ha;
 356         phba->work_ha = 0;
 357         spin_unlock_irq(&phba->hbalock);
 358
 359         if (ha_copy & HA_ERATT)
 360                 lpfc_handle_eratt(phba);
 361
 362         if (ha_copy & HA_MBATT)
 363                 lpfc_sli_handle_mb_event(phba);
 364
 365         if (ha_copy & HA_LATT)
 366                 lpfc_handle_latt(phba);
 367
 368         spin_lock_irq(&phba->hbalock);
 369         list_for_each_entry(vport, &phba->port_list, listentry) {
 370                 struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 371
 372                 if (!scsi_host_get(shost)) {
 373                         continue;
 374                 }
 375                 spin_unlock_irq(&phba->hbalock);
 376                 work_port_events = vport->work_port_events;
 377
 378                 if (work_port_events & WORKER_DISC_TMO)
 379                         lpfc_disc_timeout_handler(vport);
 380
 381                 if (work_port_events & WORKER_ELS_TMO)
 382                         lpfc_els_timeout_handler(vport);
 383
 384                 if (work_port_events & WORKER_HB_TMO)
 385                         lpfc_hb_timeout_handler(phba);
 386
 387                 if (work_port_events & WORKER_MBOX_TMO)
 388                         lpfc_mbox_timeout_handler(phba);
 389
 390                 if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
 391                         lpfc_unblock_fabric_iocbs(phba);
 392
 393                 if (work_port_events & WORKER_FDMI_TMO)
 394                         lpfc_fdmi_timeout_handler(vport);
 395
 396                 if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
 397                         lpfc_ramp_down_queue_handler(phba);
 398
 399                 if (work_port_events & WORKER_RAMP_UP_QUEUE)
 400                         lpfc_ramp_up_queue_handler(phba);
 401
 402                 spin_lock_irq(&vport->work_port_lock);
 403                 vport->work_port_events &= ~work_port_events;
 404                 spin_unlock_irq(&vport->work_port_lock);
 405                 scsi_host_put(shost);
 406                 spin_lock_irq(&phba->hbalock);
 407         }
 408         spin_unlock_irq(&phba->hbalock);
 409
 410         pring = &phba->sli.ring[LPFC_ELS_RING];
 411         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
 412         status >>= (4*LPFC_ELS_RING);
 413         if ((status & HA_RXMASK)
 414                 || (pring->flag & LPFC_DEFERRED_RING_EVENT)) {
 415                 if (pring->flag & LPFC_STOP_IOCB_MASK) {
 416                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
 417                 } else {
 418                         lpfc_sli_handle_slow_ring_event(phba, pring,
 419                                                         (status &
 420                                                          HA_RXMASK));
 421                         pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
 422                 }
 423                 /*
 424                  * Turn on Ring interrupts
 425                  */
 426                 spin_lock_irq(&phba->hbalock);
 427                 control = readl(phba->HCregaddr);
 428                 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
 429                         control |= (HC_R0INT_ENA << LPFC_ELS_RING);
 430                         writel(control, phba->HCregaddr);
 431                         readl(phba->HCregaddr); /* flush */
 432                 }
 433                 spin_unlock_irq(&phba->hbalock);
 434         }
 435         lpfc_work_list_done(phba);
 436 }
 437
 438 static int
 439 check_work_wait_done(struct lpfc_hba *phba)
 440 {
 441         struct lpfc_vport *vport;
 442         struct lpfc_sli_ring *pring;
 443         int rc = 0;
 444
 445         spin_lock_irq(&phba->hbalock);
 446         list_for_each_entry(vport, &phba->port_list, listentry) {
 447                 if (vport->work_port_events) {
 448                         rc = 1;
 449                         goto exit;
 450                 }
 451         }
 452
 453         if (phba->work_ha || (!list_empty(&phba->work_list)) ||
 454             kthread_should_stop()) {
 455                 rc = 1;
 456                 goto exit;
 457         }
 458
 459         pring = &phba->sli.ring[LPFC_ELS_RING];
 460         if (pring->flag & LPFC_DEFERRED_RING_EVENT)
 461                 rc = 1;
 462 exit:
 463         if (rc)
 464                 phba->work_found++;
 465         else
 466                 phba->work_found = 0;
 467
 468         spin_unlock_irq(&phba->hbalock);
 469         return rc;
 470 }
 471
 472
 473 int
 474 lpfc_do_work(void *p)
 475 {
 476         struct lpfc_hba *phba = p;
 477         int rc;
 478         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(work_waitq);
 479
 480         set_user_nice(current, -20);
 481         phba->work_wait = &work_waitq;
 482         phba->work_found = 0;
 483
 484         while (1) {
 485
 486                 rc = wait_event_interruptible(work_waitq,
 487                                               check_work_wait_done(phba));
 488
 489                 BUG_ON(rc);
 490
 491                 if (kthread_should_stop())
 492                         break;
 493
 494                 lpfc_work_done(phba);
 495
 496                 /* If there is alot of slow ring work, like during link up
 497                  * check_work_wait_done() may cause this thread to not give
 498                  * up the CPU for very long periods of time. This may cause
 499                  * soft lockups or other problems. To avoid these situations
 500                  * give up the CPU here after LPFC_MAX_WORKER_ITERATION
 501                  * consecutive iterations.
 502                  */
 503                 if (phba->work_found >= LPFC_MAX_WORKER_ITERATION) {
 504                         phba->work_found = 0;
 505                         schedule();
 506                 }
 507         }
 508         phba->work_wait = NULL;
 509         return 0;
 510 }
 511
 512 /*
 513  * This is only called to handle FC worker events. Since this a rare
 514  * occurance, we allocate a struct lpfc_work_evt structure here instead of
 515  * embedding it in the IOCB.
 516  */
 517 int
 518 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
 519                       uint32_t evt)
 520 {
 521         struct lpfc_work_evt  *evtp;
 522         unsigned long flags;
 523
 524         /*
 525          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
 526          * be queued to worker thread for processing
 527          */
 528         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
 529         if (!evtp)
 530                 return 0;
 531
 532         evtp->evt_arg1  = arg1;
 533         evtp->evt_arg2  = arg2;
 534         evtp->evt       = evt;
 535
 536         spin_lock_irqsave(&phba->hbalock, flags);
 537         list_add_tail(&evtp->evt_listp, &phba->work_list);
 538         if (phba->work_wait)
 539                 lpfc_worker_wake_up(phba);
 540         spin_unlock_irqrestore(&phba->hbalock, flags);
 541
 542         return 1;
 543 }
 544
 545 void
 546 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
 547 {
 548         struct lpfc_hba  *phba = vport->phba;
 549         struct lpfc_nodelist *ndlp, *next_ndlp;
 550         int  rc;
 551
 552         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
 553                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 554                         continue;
 555
 556                 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN)
 557                         lpfc_unreg_rpi(vport, ndlp);
 558
 559                 /* Leave Fabric nodes alone on link down */
 560                 if (!remove && ndlp->nlp_type & NLP_FABRIC)
 561                         continue;
 562                 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
 563                                              remove
 564                                              ? NLP_EVT_DEVICE_RM
 565                                              : NLP_EVT_DEVICE_RECOVERY);
 566         }
 567         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
 568                 lpfc_mbx_unreg_vpi(vport);
 569                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
 570         }
 571 }
 572
 573 static void
 574 lpfc_linkdown_port(struct lpfc_vport *vport)
 575 {
 576         struct lpfc_nodelist *ndlp, *next_ndlp;
 577         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 578
 579         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
 580
 581         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 582                 "Link Down:       state:x%x rtry:x%x flg:x%x",
 583                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
 584
 585         /* Cleanup any outstanding RSCN activity */
 586         lpfc_els_flush_rscn(vport);
 587
 588         /* Cleanup any outstanding ELS commands */
 589         lpfc_els_flush_cmd(vport);
 590
 591         lpfc_cleanup_rpis(vport, 0);
 592
 593         /* free any ndlp's on unused list */
 594         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp)
 595                                 /* free any ndlp's in unused state */
 596                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 597                         lpfc_drop_node(vport, ndlp);
 598
 599         /* Turn off discovery timer if its running */
 600         lpfc_can_disctmo(vport);
 601 }
 602
 603 int
 604 lpfc_linkdown(struct lpfc_hba *phba)
 605 {
 606         struct lpfc_vport *vport = phba->pport;
 607         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 608         struct lpfc_vport *port_iterator;
 609         LPFC_MBOXQ_t          *mb;
 610
 611         if (phba->link_state == LPFC_LINK_DOWN) {
 612                 return 0;
 613         }
 614         spin_lock_irq(&phba->hbalock);
 615         if (phba->link_state > LPFC_LINK_DOWN) {
 616                 phba->link_state = LPFC_LINK_DOWN;
 617                 phba->pport->fc_flag &= ~FC_LBIT;
 618         }
 619         spin_unlock_irq(&phba->hbalock);
 620
 621         list_for_each_entry(port_iterator, &phba->port_list, listentry) {
 622
 623                                 /* Issue a LINK DOWN event to all nodes */
 624                 lpfc_linkdown_port(port_iterator);
 625         }
 626
 627         /* Clean up any firmware default rpi's */
 628         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 629         if (mb) {
 630                 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
 631                 mb->vport = vport;
 632                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 633                 if (lpfc_sli_issue_mbox(phba, mb, (MBX_NOWAIT | MBX_STOP_IOCB))
 634                     == MBX_NOT_FINISHED) {
 635                         mempool_free(mb, phba->mbox_mem_pool);
 636                 }
 637         }
 638
 639         /* Setup myDID for link up if we are in pt2pt mode */
 640         if (phba->pport->fc_flag & FC_PT2PT) {
 641                 phba->pport->fc_myDID = 0;
 642                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 643                 if (mb) {
 644                         lpfc_config_link(phba, mb);
 645                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 646                         mb->vport = vport;
 647                         if (lpfc_sli_issue_mbox(phba, mb,
 648                                                 (MBX_NOWAIT | MBX_STOP_IOCB))
 649                             == MBX_NOT_FINISHED) {
 650                                 mempool_free(mb, phba->mbox_mem_pool);
 651                         }
 652                 }
 653                 spin_lock_irq(shost->host_lock);
 654                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
 655                 spin_unlock_irq(shost->host_lock);
 656         }
 657
 658         return 0;
 659 }
 660
 661 static void
 662 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
 663 {
 664         struct lpfc_nodelist *ndlp;
 665
 666         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
 667                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 668                         continue;
 669
 670                 if (ndlp->nlp_type & NLP_FABRIC) {
 671                                 /* On Linkup its safe to clean up the ndlp
 672                                  * from Fabric connections.
 673                                  */
 674                         if (ndlp->nlp_DID != Fabric_DID)
 675                                 lpfc_unreg_rpi(vport, ndlp);
 676                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 677                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
 678                                 /* Fail outstanding IO now since device is
 679                                  * marked for PLOGI.
 680                                  */
 681                         lpfc_unreg_rpi(vport, ndlp);
 682                 }
 683         }
 684 }
 685
 686 static void
 687 lpfc_linkup_port(struct lpfc_vport *vport)
 688 {
 689         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 690         struct lpfc_nodelist *ndlp, *next_ndlp;
 691         struct lpfc_hba  *phba = vport->phba;
 692
 693         if ((vport->load_flag & FC_UNLOADING) != 0)
 694                 return;
 695
 696         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 697                 "Link Up:         top:x%x speed:x%x flg:x%x",
 698                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
 699
 700         /* If NPIV is not enabled, only bring the physical port up */
 701         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
 702                 (vport != phba->pport))
 703                 return;
 704
 705         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
 706
 707         spin_lock_irq(shost->host_lock);
 708         vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
 709                             FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
 710         vport->fc_flag |= FC_NDISC_ACTIVE;
 711         vport->fc_ns_retry = 0;
 712         spin_unlock_irq(shost->host_lock);
 713
 714         if (vport->fc_flag & FC_LBIT)
 715                 lpfc_linkup_cleanup_nodes(vport);
 716
 717                                 /* free any ndlp's in unused state */
 718         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
 719                                  nlp_listp)
 720                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 721                         lpfc_drop_node(vport, ndlp);
 722 }
 723
 724 static int
 725 lpfc_linkup(struct lpfc_hba *phba)
 726 {
 727         struct lpfc_vport *vport;
 728
 729         phba->link_state = LPFC_LINK_UP;
 730
 731         /* Unblock fabric iocbs if they are blocked */
 732         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
 733         del_timer_sync(&phba->fabric_block_timer);
 734
 735         list_for_each_entry(vport, &phba->port_list, listentry) {
 736                 lpfc_linkup_port(vport);
 737         }
 738         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
 739                 lpfc_issue_clear_la(phba, phba->pport);
 740
 741         return 0;
 742 }
 743
 744 /*
 745  * This routine handles processing a CLEAR_LA mailbox
 746  * command upon completion. It is setup in the LPFC_MBOXQ
 747  * as the completion routine when the command is
 748  * handed off to the SLI layer.
 749  */
 750 void
 751 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 752 {
 753         struct lpfc_vport *vport = pmb->vport;
 754         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 755         struct lpfc_sli   *psli = &phba->sli;
 756         MAILBOX_t *mb = &pmb->mb;
 757         uint32_t control;
 758
 759         /* Since we don't do discovery right now, turn these off here */
 760         psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 761         psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 762         psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 763
 764         /* Check for error */
 765         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
 766                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
 767                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
 768                                 "%d (%d):0320 CLEAR_LA mbxStatus error x%x hba "
 769                                 "state x%x\n",
 770                                 phba->brd_no, vport->vpi, mb->mbxStatus,
 771                                 vport->port_state);
 772
 773                 phba->link_state = LPFC_HBA_ERROR;
 774                 goto out;
 775         }
 776
 777         if (vport->port_type == LPFC_PHYSICAL_PORT)
 778                 phba->link_state = LPFC_HBA_READY;
 779
 780         spin_lock_irq(&phba->hbalock);
 781         psli->sli_flag |= LPFC_PROCESS_LA;
 782         control = readl(phba->HCregaddr);
 783         control |= HC_LAINT_ENA;
 784         writel(control, phba->HCregaddr);
 785         readl(phba->HCregaddr); /* flush */
 786         spin_unlock_irq(&phba->hbalock);
 787         return;
 788
 789         vport->num_disc_nodes = 0;
 790         /* go thru NPR nodes and issue ELS PLOGIs */
 791         if (vport->fc_npr_cnt)
 792                 lpfc_els_disc_plogi(vport);
 793
 794         if (!vport->num_disc_nodes) {
 795                 spin_lock_irq(shost->host_lock);
 796                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
 797                 spin_unlock_irq(shost->host_lock);
 798         }
 799
 800         vport->port_state = LPFC_VPORT_READY;
 801
 802 out:
 803         /* Device Discovery completes */
 804         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
 805                         "%d (%d):0225 Device Discovery completes\n",
 806                         phba->brd_no, vport->vpi);
 807
 808         mempool_free(pmb, phba->mbox_mem_pool);
 809
 810         spin_lock_irq(shost->host_lock);
 811         vport->fc_flag &= ~(FC_ABORT_DISCOVERY | FC_ESTABLISH_LINK);
 812         spin_unlock_irq(shost->host_lock);
 813
 814         del_timer_sync(&phba->fc_estabtmo);
 815
 816         lpfc_can_disctmo(vport);
 817
 818         /* turn on Link Attention interrupts */
 819
 820         spin_lock_irq(&phba->hbalock);
 821         psli->sli_flag |= LPFC_PROCESS_LA;
 822         control = readl(phba->HCregaddr);
 823         control |= HC_LAINT_ENA;
 824         writel(control, phba->HCregaddr);
 825         readl(phba->HCregaddr); /* flush */
 826         spin_unlock_irq(&phba->hbalock);
 827
 828         return;
 829 }
 830
 831
 832 static void
 833 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 834 {
 835         struct lpfc_vport *vport = pmb->vport;
 836
 837         if (pmb->mb.mbxStatus)
 838                 goto out;
 839
 840         mempool_free(pmb, phba->mbox_mem_pool);
 841
 842         if (phba->fc_topology == TOPOLOGY_LOOP &&
 843             vport->fc_flag & FC_PUBLIC_LOOP &&
 844             !(vport->fc_flag & FC_LBIT)) {
 845                         /* Need to wait for FAN - use discovery timer
 846                          * for timeout.  port_state is identically
 847                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
 848                          */
 849                         lpfc_set_disctmo(vport);
 850                         return;
 851         }
 852
 853         /* Start discovery by sending a FLOGI. port_state is identically
 854          * LPFC_FLOGI while waiting for FLOGI cmpl
 855          */
 856         if (vport->port_state != LPFC_FLOGI) {
 857                 vport->port_state = LPFC_FLOGI;
 858                 lpfc_set_disctmo(vport);
 859                 lpfc_initial_flogi(vport);
 860         }
 861         return;
 862
 863 out:
 864         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
 865                         "%d (%d):0306 CONFIG_LINK mbxStatus error x%x "
 866                         "HBA state x%x\n",
 867                         phba->brd_no, vport->vpi, pmb->mb.mbxStatus,
 868                         vport->port_state);
 869
 870         mempool_free(pmb, phba->mbox_mem_pool);
 871
 872         lpfc_linkdown(phba);
 873
 874         lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
 875                         "%d (%d):0200 CONFIG_LINK bad hba state x%x\n",
 876                         phba->brd_no, vport->vpi, vport->port_state);
 877
 878         lpfc_issue_clear_la(phba, vport);
 879         return;
 880 }
 881
 882 static void
 883 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 884 {
 885         MAILBOX_t *mb = &pmb->mb;
 886         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
 887         struct lpfc_vport  *vport = pmb->vport;
 888
 889
 890         /* Check for error */
 891         if (mb->mbxStatus) {
 892                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
 893                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
 894                                 "%d (%d):0319 READ_SPARAM mbxStatus error x%x "
 895                                 "hba state x%x>\n",
 896                                 phba->brd_no, vport->vpi, mb->mbxStatus,
 897                                 vport->port_state);
 898
 899                 lpfc_linkdown(phba);
 900                 goto out;
 901         }
 902
 903         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
 904                sizeof (struct serv_parm));
 905         if (phba->cfg_soft_wwnn)
 906                 u64_to_wwn(phba->cfg_soft_wwnn,
 907                            vport->fc_sparam.nodeName.u.wwn);
 908         if (phba->cfg_soft_wwpn)
 909                 u64_to_wwn(phba->cfg_soft_wwpn,
 910                            vport->fc_sparam.portName.u.wwn);
 911         memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
 912                sizeof(vport->fc_nodename));
 913         memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
 914                sizeof(vport->fc_portname));
 915         if (vport->port_type == LPFC_PHYSICAL_PORT) {
 916                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
 917                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
 918         }
 919
 920         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 921         kfree(mp);
 922         mempool_free(pmb, phba->mbox_mem_pool);
 923         return;
 924
 925 out:
 926         pmb->context1 = NULL;
 927         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 928         kfree(mp);
 929         lpfc_issue_clear_la(phba, vport);
 930         mempool_free(pmb, phba->mbox_mem_pool);
 931         return;
 932 }
 933
 934 static void
 935 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
 936 {
 937         struct lpfc_vport *vport = phba->pport;
 938         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox;
 939         int i;
 940         struct lpfc_dmabuf *mp;
 941         int rc;
 942
 943         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 944         cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 945
 946         spin_lock_irq(&phba->hbalock);
 947         switch (la->UlnkSpeed) {
 948         case LA_1GHZ_LINK:
 949                 phba->fc_linkspeed = LA_1GHZ_LINK;
 950                 break;
 951         case LA_2GHZ_LINK:
 952                 phba->fc_linkspeed = LA_2GHZ_LINK;
 953                 break;
 954         case LA_4GHZ_LINK:
 955                 phba->fc_linkspeed = LA_4GHZ_LINK;
 956                 break;
 957         case LA_8GHZ_LINK:
 958                 phba->fc_linkspeed = LA_8GHZ_LINK;
 959                 break;
 960         default:
 961                 phba->fc_linkspeed = LA_UNKNW_LINK;
 962                 break;
 963         }
 964
 965         phba->fc_topology = la->topology;
 966         phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
 967
 968         if (phba->fc_topology == TOPOLOGY_LOOP) {
 969                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
 970
 971                                 /* Get Loop Map information */
 972                 if (la->il)
 973                         vport->fc_flag |= FC_LBIT;
 974
 975                 vport->fc_myDID = la->granted_AL_PA;
 976                 i = la->un.lilpBde64.tus.f.bdeSize;
 977
 978                 if (i == 0) {
 979                         phba->alpa_map[0] = 0;
 980                 } else {
 981                         if (phba->cfg_log_verbose & LOG_LINK_EVENT) {
 982                                 int numalpa, j, k;
 983                                 union {
 984                                         uint8_t pamap[16];
 985                                         struct {
 986                                                 uint32_t wd1;
 987                                                 uint32_t wd2;
 988                                                 uint32_t wd3;
 989                                                 uint32_t wd4;
 990                                         } pa;
 991                                 } un;
 992                                 numalpa = phba->alpa_map[0];
 993                                 j = 0;
 994                                 while (j < numalpa) {
 995                                         memset(un.pamap, 0, 16);
 996                                         for (k = 1; j < numalpa; k++) {
 997                                                 un.pamap[k - 1] =
 998                                                         phba->alpa_map[j + 1];
 999                                                 j++;
1000                                                 if (k == 16)
1001                                                         break;
1002                                         }
1003                                         /* Link Up Event ALPA map */
1004                                         lpfc_printf_log(phba,
1005                                                         KERN_WARNING,
1006                                                         LOG_LINK_EVENT,
1007                                                         "%d:1304 Link Up Event "
1008                                                         "ALPA map Data: x%x "
1009                                                         "x%x x%x x%x\n",
1010                                                         phba->brd_no,
1011                                                         un.pa.wd1, un.pa.wd2,
1012                                                         un.pa.wd3, un.pa.wd4);
1013                                 }
1014                         }
1015                 }
1016         } else {
1017                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
1018                         if (phba->max_vpi && phba->cfg_npiv_enable &&
1019                            (phba->sli_rev == 3))
1020                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
1021                 }
1022                 vport->fc_myDID = phba->fc_pref_DID;
1023                 vport->fc_flag |= FC_LBIT;
1024         }
1025         spin_unlock_irq(&phba->hbalock);
1026
1027         lpfc_linkup(phba);
1028         if (sparam_mbox) {
1029                 lpfc_read_sparam(phba, sparam_mbox, 0);
1030                 sparam_mbox->vport = vport;
1031                 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1032                 rc = lpfc_sli_issue_mbox(phba, sparam_mbox,
1033                                     (MBX_NOWAIT | MBX_STOP_IOCB));
1034                 if (rc == MBX_NOT_FINISHED) {
1035                         mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
1036                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1037                         kfree(mp);
1038                         mempool_free(sparam_mbox, phba->mbox_mem_pool);
1039                         if (cfglink_mbox)
1040                                 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1041                         goto out;
1042                 }
1043         }
1044
1045         if (cfglink_mbox) {
1046                 vport->port_state = LPFC_LOCAL_CFG_LINK;
1047                 lpfc_config_link(phba, cfglink_mbox);
1048                 cfglink_mbox->vport = vport;
1049                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
1050                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox,
1051                                     (MBX_NOWAIT | MBX_STOP_IOCB));
1052                 if (rc != MBX_NOT_FINISHED)
1053                         return;
1054                 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1055         }
1056 out:
1057         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1058         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1059                 "%d (%d):0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
1060                 phba->brd_no, vport->vpi,
1061                 vport->port_state, sparam_mbox, cfglink_mbox);
1062
1063         lpfc_issue_clear_la(phba, vport);
1064         return;
1065 }
1066
1067 static void
1068 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
1069 {
1070         uint32_t control;
1071         struct lpfc_sli *psli = &phba->sli;
1072
1073         lpfc_linkdown(phba);
1074
1075         /* turn on Link Attention interrupts - no CLEAR_LA needed */
1076         spin_lock_irq(&phba->hbalock);
1077         psli->sli_flag |= LPFC_PROCESS_LA;
1078         control = readl(phba->HCregaddr);
1079         control |= HC_LAINT_ENA;
1080         writel(control, phba->HCregaddr);
1081         readl(phba->HCregaddr); /* flush */
1082         spin_unlock_irq(&phba->hbalock);
1083 }
1084
1085 /*
1086  * This routine handles processing a READ_LA mailbox
1087  * command upon completion. It is setup in the LPFC_MBOXQ
1088  * as the completion routine when the command is
1089  * handed off to the SLI layer.
1090  */
1091 void
1092 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1093 {
1094         struct lpfc_vport *vport = pmb->vport;
1095         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1096         READ_LA_VAR *la;
1097         MAILBOX_t *mb = &pmb->mb;
1098         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1099
1100         /* Check for error */
1101         if (mb->mbxStatus) {
1102                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1103                                 "%d:1307 READ_LA mbox error x%x state x%x\n",
1104                                 phba->brd_no, mb->mbxStatus, vport->port_state);
1105                 lpfc_mbx_issue_link_down(phba);
1106                 phba->link_state = LPFC_HBA_ERROR;
1107                 goto lpfc_mbx_cmpl_read_la_free_mbuf;
1108         }
1109
1110         la = (READ_LA_VAR *) & pmb->mb.un.varReadLA;
1111
1112         memcpy(&phba->alpa_map[0], mp->virt, 128);
1113
1114         spin_lock_irq(shost->host_lock);
1115         if (la->pb)
1116                 vport->fc_flag |= FC_BYPASSED_MODE;
1117         else
1118                 vport->fc_flag &= ~FC_BYPASSED_MODE;
1119         spin_unlock_irq(shost->host_lock);
1120
1121         if (((phba->fc_eventTag + 1) < la->eventTag) ||
1122             (phba->fc_eventTag == la->eventTag)) {
1123                 phba->fc_stat.LinkMultiEvent++;
1124                 if (la->attType == AT_LINK_UP)
1125                         if (phba->fc_eventTag != 0)
1126                                 lpfc_linkdown(phba);
1127         }
1128
1129         phba->fc_eventTag = la->eventTag;
1130
1131         if (la->attType == AT_LINK_UP) {
1132                 phba->fc_stat.LinkUp++;
1133                 if (phba->link_flag & LS_LOOPBACK_MODE) {
1134                         lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1135                                 "%d:1306 Link Up Event in loop back mode "
1136                                 "x%x received Data: x%x x%x x%x x%x\n",
1137                                 phba->brd_no, la->eventTag, phba->fc_eventTag,
1138                                 la->granted_AL_PA, la->UlnkSpeed,
1139                                 phba->alpa_map[0]);
1140                 } else {
1141                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1142                                 "%d:1303 Link Up Event x%x received "
1143                                 "Data: x%x x%x x%x x%x\n",
1144                                 phba->brd_no, la->eventTag, phba->fc_eventTag,
1145                                 la->granted_AL_PA, la->UlnkSpeed,
1146                                 phba->alpa_map[0]);
1147                 }
1148                 lpfc_mbx_process_link_up(phba, la);
1149         } else {
1150                 phba->fc_stat.LinkDown++;
1151                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1152                                 "%d:1305 Link Down Event x%x received "
1153                                 "Data: x%x x%x x%x\n",
1154                                 phba->brd_no, la->eventTag, phba->fc_eventTag,
1155                                 phba->pport->port_state, vport->fc_flag);
1156                 lpfc_mbx_issue_link_down(phba);
1157         }
1158
1159 lpfc_mbx_cmpl_read_la_free_mbuf:
1160         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1161         kfree(mp);
1162         mempool_free(pmb, phba->mbox_mem_pool);
1163         return;
1164 }
1165
1166 /*
1167  * This routine handles processing a REG_LOGIN mailbox
1168  * command upon completion. It is setup in the LPFC_MBOXQ
1169  * as the completion routine when the command is
1170  * handed off to the SLI layer.
1171  */
1172 void
1173 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1174 {
1175         struct lpfc_vport  *vport = pmb->vport;
1176         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1177         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1178
1179         pmb->context1 = NULL;
1180
1181         /* Good status, call state machine */
1182         lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
1183         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1184         kfree(mp);
1185         mempool_free(pmb, phba->mbox_mem_pool);
1186         lpfc_nlp_put(ndlp);
1187
1188         return;
1189 }
1190
1191 static void
1192 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1193 {
1194         MAILBOX_t *mb = &pmb->mb;
1195         struct lpfc_vport *vport = pmb->vport;
1196         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1197
1198         switch (mb->mbxStatus) {
1199         case 0x0011:
1200         case 0x0020:
1201         case 0x9700:
1202                 lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
1203                                 "%d (%d):0911 cmpl_unreg_vpi, "
1204                                 "mb status = 0x%x\n",
1205                                 phba->brd_no, vport->vpi, mb->mbxStatus);
1206                 break;
1207         }
1208         vport->unreg_vpi_cmpl = VPORT_OK;
1209         mempool_free(pmb, phba->mbox_mem_pool);
1210         /*
1211          * This shost reference might have been taken at the beginning of
1212          * lpfc_vport_delete()
1213          */
1214         if (vport->load_flag & FC_UNLOADING)
1215                 scsi_host_put(shost);
1216 }
1217
1218 void
1219 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
1220 {
1221         struct lpfc_hba  *phba = vport->phba;
1222         LPFC_MBOXQ_t *mbox;
1223         int rc;
1224
1225         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1226         if (!mbox)
1227                 return;
1228
1229         lpfc_unreg_vpi(phba, vport->vpi, mbox);
1230         mbox->vport = vport;
1231         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
1232         rc = lpfc_sli_issue_mbox(phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB));
1233         if (rc == MBX_NOT_FINISHED) {
1234                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_VPORT,
1235                                 "%d (%d):1800 Could not issue unreg_vpi\n",
1236                                 phba->brd_no, vport->vpi);
1237                 mempool_free(mbox, phba->mbox_mem_pool);
1238                 vport->unreg_vpi_cmpl = VPORT_ERROR;
1239         }
1240 }
1241
1242 static void
1243 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1244 {
1245         struct lpfc_vport *vport = pmb->vport;
1246         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1247         MAILBOX_t *mb = &pmb->mb;
1248
1249         switch (mb->mbxStatus) {
1250         case 0x0011:
1251         case 0x9601:
1252         case 0x9602:
1253                 lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
1254                                 "%d (%d):0912 cmpl_reg_vpi, mb status = 0x%x\n",
1255                                 phba->brd_no, vport->vpi, mb->mbxStatus);
1256                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1257                 spin_lock_irq(shost->host_lock);
1258                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1259                 spin_unlock_irq(shost->host_lock);
1260                 vport->fc_myDID = 0;
1261                 goto out;
1262         }
1263
1264         vport->num_disc_nodes = 0;
1265         /* go thru NPR list and issue ELS PLOGIs */
1266         if (vport->fc_npr_cnt)
1267                 lpfc_els_disc_plogi(vport);
1268
1269         if (!vport->num_disc_nodes) {
1270                 spin_lock_irq(shost->host_lock);
1271                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1272                 spin_unlock_irq(shost->host_lock);
1273                 lpfc_can_disctmo(vport);
1274         }
1275         vport->port_state = LPFC_VPORT_READY;
1276
1277 out:
1278         mempool_free(pmb, phba->mbox_mem_pool);
1279         return;
1280 }
1281
1282 /*
1283  * This routine handles processing a Fabric REG_LOGIN mailbox
1284  * command upon completion. It is setup in the LPFC_MBOXQ
1285  * as the completion routine when the command is
1286  * handed off to the SLI layer.
1287  */
1288 void
1289 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1290 {
1291         struct lpfc_vport *vport = pmb->vport;
1292         struct lpfc_vport *next_vport;
1293         MAILBOX_t *mb = &pmb->mb;
1294         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1295         struct lpfc_nodelist *ndlp;
1296         ndlp = (struct lpfc_nodelist *) pmb->context2;
1297
1298         pmb->context1 = NULL;
1299         pmb->context2 = NULL;
1300
1301         if (mb->mbxStatus) {
1302                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1303                 kfree(mp);
1304                 mempool_free(pmb, phba->mbox_mem_pool);
1305                 lpfc_nlp_put(ndlp);
1306
1307                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1308                         /* FLOGI failed, use loop map to make discovery list */
1309                         lpfc_disc_list_loopmap(vport);
1310
1311                         /* Start discovery */
1312                         lpfc_disc_start(vport);
1313                         return;
1314                 }
1315
1316                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1317                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1318                         "%d (%d):0258 Register Fabric login error: 0x%x\n",
1319                         phba->brd_no, vport->vpi, mb->mbxStatus);
1320
1321                 return;
1322         }
1323
1324         ndlp->nlp_rpi = mb->un.varWords[0];
1325         ndlp->nlp_type |= NLP_FABRIC;
1326         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1327
1328         lpfc_nlp_put(ndlp);     /* Drop the reference from the mbox */
1329
1330         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
1331                 list_for_each_entry(next_vport, &phba->port_list, listentry) {
1332                         if (next_vport->port_type == LPFC_PHYSICAL_PORT)
1333                                 continue;
1334
1335                         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1336                                 lpfc_initial_fdisc(next_vport);
1337                         else if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
1338                                 lpfc_vport_set_state(vport,
1339                                                      FC_VPORT_NO_FABRIC_SUPP);
1340                                 lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
1341                                                 "%d (%d):0259 No NPIV Fabric "
1342                                                 "support\n",
1343                                                 phba->brd_no, vport->vpi);
1344                         }
1345                 }
1346                 lpfc_do_scr_ns_plogi(phba, vport);
1347         }
1348
1349         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1350         kfree(mp);
1351         mempool_free(pmb, phba->mbox_mem_pool);
1352         return;
1353 }
1354
1355 /*
1356  * This routine handles processing a NameServer REG_LOGIN mailbox
1357  * command upon completion. It is setup in the LPFC_MBOXQ
1358  * as the completion routine when the command is
1359  * handed off to the SLI layer.
1360  */
1361 void
1362 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1363 {
1364         MAILBOX_t *mb = &pmb->mb;
1365         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1366         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1367         struct lpfc_vport *vport = pmb->vport;
1368
1369         if (mb->mbxStatus) {
1370 out:
1371                 lpfc_nlp_put(ndlp);
1372                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1373                 kfree(mp);
1374                 mempool_free(pmb, phba->mbox_mem_pool);
1375                 lpfc_drop_node(vport, ndlp);
1376
1377                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1378                         /*
1379                          * RegLogin failed, use loop map to make discovery
1380                          * list
1381                          */
1382                         lpfc_disc_list_loopmap(vport);
1383
1384                         /* Start discovery */
1385                         lpfc_disc_start(vport);
1386                         return;
1387                 }
1388                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1389                 lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
1390                         "%d (%d):0260 Register NameServer error: 0x%x\n",
1391                         phba->brd_no, vport->vpi, mb->mbxStatus);
1392                 return;
1393         }
1394
1395         pmb->context1 = NULL;
1396
1397         ndlp->nlp_rpi = mb->un.varWords[0];
1398         ndlp->nlp_type |= NLP_FABRIC;
1399         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1400
1401         if (vport->port_state < LPFC_VPORT_READY) {
1402                 /* Link up discovery requires Fabric registration. */
1403                 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
1404                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
1405                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
1406                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
1407                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
1408
1409                 /* Issue SCR just before NameServer GID_FT Query */
1410                 lpfc_issue_els_scr(vport, SCR_DID, 0);
1411         }
1412
1413         vport->fc_ns_retry = 0;
1414         /* Good status, issue CT Request to NameServer */
1415         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
1416                 /* Cannot issue NameServer Query, so finish up discovery */
1417                 goto out;
1418         }
1419
1420         lpfc_nlp_put(ndlp);
1421         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1422         kfree(mp);
1423         mempool_free(pmb, phba->mbox_mem_pool);
1424
1425         return;
1426 }
1427
1428 static void
1429 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1430 {
1431         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1432         struct fc_rport  *rport;
1433         struct lpfc_rport_data *rdata;
1434         struct fc_rport_identifiers rport_ids;
1435         struct lpfc_hba  *phba = vport->phba;
1436
1437         /* Remote port has reappeared. Re-register w/ FC transport */
1438         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
1439         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
1440         rport_ids.port_id = ndlp->nlp_DID;
1441         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1442
1443         /*
1444          * We leave our node pointer in rport->dd_data when we unregister a
1445          * FCP target port.  But fc_remote_port_add zeros the space to which
1446          * rport->dd_data points.  So, if we're reusing a previously
1447          * registered port, drop the reference that we took the last time we
1448          * registered the port.
1449          */
1450         if (ndlp->rport && ndlp->rport->dd_data &&
1451             ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp) {
1452                 lpfc_nlp_put(ndlp);
1453         }
1454
1455         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
1456                 "rport add:       did:x%x flg:x%x type x%x",
1457                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1458
1459         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
1460         if (!rport || !get_device(&rport->dev)) {
1461                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
1462                            "Warning: fc_remote_port_add failed\n");
1463                 return;
1464         }
1465
1466         /* initialize static port data */
1467         rport->maxframe_size = ndlp->nlp_maxframe;
1468         rport->supported_classes = ndlp->nlp_class_sup;
1469         rdata = rport->dd_data;
1470         rdata->pnode = lpfc_nlp_get(ndlp);
1471
1472         if (ndlp->nlp_type & NLP_FCP_TARGET)
1473                 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1474         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
1475                 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
1476
1477
1478         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
1479                 fc_remote_port_rolechg(rport, rport_ids.roles);
1480
1481         if ((rport->scsi_target_id != -1) &&
1482             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
1483                 ndlp->nlp_sid = rport->scsi_target_id;
1484         }
1485         return;
1486 }
1487
1488 static void
1489 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
1490 {
1491         struct fc_rport *rport = ndlp->rport;
1492
1493         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
1494                 "rport delete:    did:x%x flg:x%x type x%x",
1495                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1496
1497         fc_remote_port_delete(rport);
1498
1499         return;
1500 }
1501
1502 static void
1503 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
1504 {
1505         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1506
1507         spin_lock_irq(shost->host_lock);
1508         switch (state) {
1509         case NLP_STE_UNUSED_NODE:
1510                 vport->fc_unused_cnt += count;
1511                 break;
1512         case NLP_STE_PLOGI_ISSUE:
1513                 vport->fc_plogi_cnt += count;
1514                 break;
1515         case NLP_STE_ADISC_ISSUE:
1516                 vport->fc_adisc_cnt += count;
1517                 break;
1518         case NLP_STE_REG_LOGIN_ISSUE:
1519                 vport->fc_reglogin_cnt += count;
1520                 break;
1521         case NLP_STE_PRLI_ISSUE:
1522                 vport->fc_prli_cnt += count;
1523                 break;
1524         case NLP_STE_UNMAPPED_NODE:
1525                 vport->fc_unmap_cnt += count;
1526                 break;
1527         case NLP_STE_MAPPED_NODE:
1528                 vport->fc_map_cnt += count;
1529                 break;
1530         case NLP_STE_NPR_NODE:
1531                 vport->fc_npr_cnt += count;
1532                 break;
1533         }
1534         spin_unlock_irq(shost->host_lock);
1535 }
1536
1537 static void
1538 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1539                        int old_state, int new_state)
1540 {
1541         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1542
1543         if (new_state == NLP_STE_UNMAPPED_NODE) {
1544                 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1545                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1546                 ndlp->nlp_type |= NLP_FC_NODE;
1547         }
1548         if (new_state == NLP_STE_MAPPED_NODE)
1549                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1550         if (new_state == NLP_STE_NPR_NODE)
1551                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
1552
1553         /* Transport interface */
1554         if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
1555                             old_state == NLP_STE_UNMAPPED_NODE)) {
1556                 vport->phba->nport_event_cnt++;
1557                 lpfc_unregister_remote_port(ndlp);
1558         }
1559
1560         if (new_state ==  NLP_STE_MAPPED_NODE ||
1561             new_state == NLP_STE_UNMAPPED_NODE) {
1562                 vport->phba->nport_event_cnt++;
1563                 /*
1564                  * Tell the fc transport about the port, if we haven't
1565                  * already. If we have, and it's a scsi entity, be
1566                  * sure to unblock any attached scsi devices
1567                  */
1568                 lpfc_register_remote_port(vport, ndlp);
1569         }
1570         /*
1571          * if we added to Mapped list, but the remote port
1572          * registration failed or assigned a target id outside
1573          * our presentable range - move the node to the
1574          * Unmapped List
1575          */
1576         if (new_state == NLP_STE_MAPPED_NODE &&
1577             (!ndlp->rport ||
1578              ndlp->rport->scsi_target_id == -1 ||
1579              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
1580                 spin_lock_irq(shost->host_lock);
1581                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
1582                 spin_unlock_irq(shost->host_lock);
1583                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1584         }
1585 }
1586
1587 static char *
1588 lpfc_nlp_state_name(char *buffer, size_t size, int state)
1589 {
1590         static char *states[] = {
1591                 [NLP_STE_UNUSED_NODE] = "UNUSED",
1592                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
1593                 [NLP_STE_ADISC_ISSUE] = "ADISC",
1594                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
1595                 [NLP_STE_PRLI_ISSUE] = "PRLI",
1596                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
1597                 [NLP_STE_MAPPED_NODE] = "MAPPED",
1598                 [NLP_STE_NPR_NODE] = "NPR",
1599         };
1600
1601         if (state < ARRAY_SIZE(states) && states[state])
1602                 strlcpy(buffer, states[state], size);
1603         else
1604                 snprintf(buffer, size, "unknown (%d)", state);
1605         return buffer;
1606 }
1607
1608 void
1609 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1610                    int state)
1611 {
1612         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1613         int  old_state = ndlp->nlp_state;
1614         char name1[16], name2[16];
1615
1616         lpfc_printf_log(vport->phba, KERN_INFO, LOG_NODE,
1617                         "%d (%d):0904 NPort state transition x%06x, %s -> %s\n",
1618                         vport->phba->brd_no, vport->vpi,
1619                         ndlp->nlp_DID,
1620                         lpfc_nlp_state_name(name1, sizeof(name1), old_state),
1621                         lpfc_nlp_state_name(name2, sizeof(name2), state));
1622
1623         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1624                 "node statechg    did:x%x old:%d ste:%d",
1625                 ndlp->nlp_DID, old_state, state);
1626
1627         if (old_state == NLP_STE_NPR_NODE &&
1628             (ndlp->nlp_flag & NLP_DELAY_TMO) != 0 &&
1629             state != NLP_STE_NPR_NODE)
1630                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1631         if (old_state == NLP_STE_UNMAPPED_NODE) {
1632                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
1633                 ndlp->nlp_type &= ~NLP_FC_NODE;
1634         }
1635
1636         if (list_empty(&ndlp->nlp_listp)) {
1637                 spin_lock_irq(shost->host_lock);
1638                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1639                 spin_unlock_irq(shost->host_lock);
1640         } else if (old_state)
1641                 lpfc_nlp_counters(vport, old_state, -1);
1642
1643         ndlp->nlp_state = state;
1644         lpfc_nlp_counters(vport, state, 1);
1645         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
1646 }
1647
1648 void
1649 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1650 {
1651         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1652
1653         if ((ndlp->nlp_flag & NLP_DELAY_TMO) != 0)
1654                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1655         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1656                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1657         spin_lock_irq(shost->host_lock);
1658         list_del_init(&ndlp->nlp_listp);
1659         spin_unlock_irq(shost->host_lock);
1660         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
1661                                NLP_STE_UNUSED_NODE);
1662 }
1663
1664 void
1665 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1666 {
1667         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1668
1669         if ((ndlp->nlp_flag & NLP_DELAY_TMO) != 0)
1670                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1671         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1672                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1673         spin_lock_irq(shost->host_lock);
1674         list_del_init(&ndlp->nlp_listp);
1675         ndlp->nlp_flag &= ~NLP_TARGET_REMOVE;
1676         spin_unlock_irq(shost->host_lock);
1677         lpfc_nlp_put(ndlp);
1678 }
1679
1680 /*
1681  * Start / ReStart rescue timer for Discovery / RSCN handling
1682  */
1683 void
1684 lpfc_set_disctmo(struct lpfc_vport *vport)
1685 {
1686         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1687         struct lpfc_hba  *phba = vport->phba;
1688         uint32_t tmo;
1689
1690         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
1691                 /* For FAN, timeout should be greater then edtov */
1692                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
1693         } else {
1694                 /* Normal discovery timeout should be > then ELS/CT timeout
1695                  * FC spec states we need 3 * ratov for CT requests
1696                  */
1697                 tmo = ((phba->fc_ratov * 3) + 3);
1698         }
1699
1700
1701         if (!timer_pending(&vport->fc_disctmo)) {
1702                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1703                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
1704                         tmo, vport->port_state, vport->fc_flag);
1705         }
1706
1707         mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
1708         spin_lock_irq(shost->host_lock);
1709         vport->fc_flag |= FC_DISC_TMO;
1710         spin_unlock_irq(shost->host_lock);
1711
1712         /* Start Discovery Timer state <hba_state> */
1713         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
1714                         "%d (%d):0247 Start Discovery Timer state x%x "
1715                         "Data: x%x x%lx x%x x%x\n",
1716                         phba->brd_no, vport->vpi, vport->port_state, tmo,
1717                         (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
1718                         vport->fc_adisc_cnt);
1719
1720         return;
1721 }
1722
1723 /*
1724  * Cancel rescue timer for Discovery / RSCN handling
1725  */
1726 int
1727 lpfc_can_disctmo(struct lpfc_vport *vport)
1728 {
1729         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1730         struct lpfc_hba  *phba = vport->phba;
1731         unsigned long iflags;
1732
1733         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1734                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
1735                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1736
1737         /* Turn off discovery timer if its running */
1738         if (vport->fc_flag & FC_DISC_TMO) {
1739                 spin_lock_irqsave(shost->host_lock, iflags);
1740                 vport->fc_flag &= ~FC_DISC_TMO;
1741                 spin_unlock_irqrestore(shost->host_lock, iflags);
1742                 del_timer_sync(&vport->fc_disctmo);
1743                 spin_lock_irqsave(&vport->work_port_lock, iflags);
1744                 vport->work_port_events &= ~WORKER_DISC_TMO;
1745                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
1746         }
1747
1748         /* Cancel Discovery Timer state <hba_state> */
1749         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
1750                         "%d (%d):0248 Cancel Discovery Timer state x%x "
1751                         "Data: x%x x%x x%x\n",
1752                         phba->brd_no, vport->vpi, vport->port_state,
1753                         vport->fc_flag, vport->fc_plogi_cnt,
1754                         vport->fc_adisc_cnt);
1755
1756         return 0;
1757 }
1758
1759 /*
1760  * Check specified ring for outstanding IOCB on the SLI queue
1761  * Return true if iocb matches the specified nport
1762  */
1763 int
1764 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
1765                     struct lpfc_sli_ring *pring,
1766                     struct lpfc_iocbq *iocb,
1767                     struct lpfc_nodelist *ndlp)
1768 {
1769         struct lpfc_sli *psli = &phba->sli;
1770         IOCB_t *icmd = &iocb->iocb;
1771         struct lpfc_vport    *vport = ndlp->vport;
1772
1773         if (iocb->vport != vport)
1774                 return 0;
1775
1776         if (pring->ringno == LPFC_ELS_RING) {
1777                 switch (icmd->ulpCommand) {
1778                 case CMD_GEN_REQUEST64_CR:
1779                         if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi)
1780                                 return 1;
1781                 case CMD_ELS_REQUEST64_CR:
1782                         if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
1783                                 return 1;
1784                 case CMD_XMIT_ELS_RSP64_CX:
1785                         if (iocb->context1 == (uint8_t *) ndlp)
1786                                 return 1;
1787                 }
1788         } else if (pring->ringno == psli->extra_ring) {
1789
1790         } else if (pring->ringno == psli->fcp_ring) {
1791                 /* Skip match check if waiting to relogin to FCP target */
1792                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
1793                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
1794                         return 0;
1795                 }
1796                 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
1797                         return 1;
1798                 }
1799         } else if (pring->ringno == psli->next_ring) {
1800
1801         }
1802         return 0;
1803 }
1804
1805 /*
1806  * Free resources / clean up outstanding I/Os
1807  * associated with nlp_rpi in the LPFC_NODELIST entry.
1808  */
1809 static int
1810 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
1811 {
1812         LIST_HEAD(completions);
1813         struct lpfc_sli *psli;
1814         struct lpfc_sli_ring *pring;
1815         struct lpfc_iocbq *iocb, *next_iocb;
1816         IOCB_t *icmd;
1817         uint32_t rpi, i;
1818
1819         lpfc_fabric_abort_nport(ndlp);
1820
1821         /*
1822          * Everything that matches on txcmplq will be returned
1823          * by firmware with a no rpi error.
1824          */
1825         psli = &phba->sli;
1826         rpi = ndlp->nlp_rpi;
1827         if (rpi) {
1828                 /* Now process each ring */
1829                 for (i = 0; i < psli->num_rings; i++) {
1830                         pring = &psli->ring[i];
1831
1832                         spin_lock_irq(&phba->hbalock);
1833                         list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
1834                                                  list) {
1835                                 /*
1836                                  * Check to see if iocb matches the nport we are
1837                                  * looking for
1838                                  */
1839                                 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
1840                                                          ndlp))) {
1841                                         /* It matches, so deque and call compl
1842                                            with an error */
1843                                         list_move_tail(&iocb->list,
1844                                                        &completions);
1845                                         pring->txq_cnt--;
1846                                 }
1847                         }
1848                         spin_unlock_irq(&phba->hbalock);
1849                 }
1850         }
1851
1852         while (!list_empty(&completions)) {
1853                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
1854                 list_del_init(&iocb->list);
1855
1856                 if (!iocb->iocb_cmpl)
1857                         lpfc_sli_release_iocbq(phba, iocb);
1858                 else {
1859                         icmd = &iocb->iocb;
1860                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1861                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1862                         (iocb->iocb_cmpl)(phba, iocb, iocb);
1863                 }
1864         }
1865
1866         return 0;
1867 }
1868
1869 /*
1870  * Free rpi associated with LPFC_NODELIST entry.
1871  * This routine is called from lpfc_freenode(), when we are removing
1872  * a LPFC_NODELIST entry. It is also called if the driver initiates a
1873  * LOGO that completes successfully, and we are waiting to PLOGI back
1874  * to the remote NPort. In addition, it is called after we receive
1875  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
1876  * we are waiting to PLOGI back to the remote NPort.
1877  */
1878 int
1879 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1880 {
1881         struct lpfc_hba *phba = vport->phba;
1882         LPFC_MBOXQ_t    *mbox;
1883         int rc;
1884
1885         if (ndlp->nlp_rpi) {
1886                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1887                 if (mbox) {
1888                         lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
1889                         mbox->vport = vport;
1890                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1891                         rc = lpfc_sli_issue_mbox(phba, mbox,
1892                                                  (MBX_NOWAIT | MBX_STOP_IOCB));
1893                         if (rc == MBX_NOT_FINISHED)
1894                                 mempool_free(mbox, phba->mbox_mem_pool);
1895                 }
1896                 lpfc_no_rpi(phba, ndlp);
1897                 ndlp->nlp_rpi = 0;
1898                 return 1;
1899         }
1900         return 0;
1901 }
1902
1903 void
1904 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
1905 {
1906         struct lpfc_hba  *phba  = vport->phba;
1907         LPFC_MBOXQ_t     *mbox;
1908         int rc;
1909
1910         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1911         if (mbox) {
1912                 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
1913                 mbox->vport = vport;
1914                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1915                 rc = lpfc_sli_issue_mbox(phba, mbox,
1916                                          (MBX_NOWAIT | MBX_STOP_IOCB));
1917                 if (rc == MBX_NOT_FINISHED) {
1918                         mempool_free(mbox, phba->mbox_mem_pool);
1919                 }
1920         }
1921 }
1922
1923 void
1924 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
1925 {
1926         struct lpfc_hba  *phba  = vport->phba;
1927         LPFC_MBOXQ_t     *mbox;
1928         int rc;
1929
1930         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1931         if (mbox) {
1932                 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
1933                 mbox->vport = vport;
1934                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1935                 rc = lpfc_sli_issue_mbox(phba, mbox,
1936                                          (MBX_NOWAIT | MBX_STOP_IOCB));
1937                 if (rc == MBX_NOT_FINISHED) {
1938                         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_VPORT,
1939                                         "%d (%d):1815 Could not issue "
1940                                         "unreg_did (default rpis)\n",
1941                                         phba->brd_no, vport->vpi);
1942                         mempool_free(mbox, phba->mbox_mem_pool);
1943                 }
1944         }
1945 }
1946
1947 /*
1948  * Free resources associated with LPFC_NODELIST entry
1949  * so it can be freed.
1950  */
1951 static int
1952 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1953 {
1954         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1955         struct lpfc_hba  *phba = vport->phba;
1956         LPFC_MBOXQ_t *mb, *nextmb;
1957         struct lpfc_dmabuf *mp;
1958
1959         /* Cleanup node for NPort <nlp_DID> */
1960         lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
1961                         "%d (%d):0900 Cleanup node for NPort x%x "
1962                         "Data: x%x x%x x%x\n",
1963                         phba->brd_no, vport->vpi, ndlp->nlp_DID, ndlp->nlp_flag,
1964                         ndlp->nlp_state, ndlp->nlp_rpi);
1965
1966         lpfc_dequeue_node(vport, ndlp);
1967
1968         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1969         if ((mb = phba->sli.mbox_active)) {
1970                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1971                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1972                         mb->context2 = NULL;
1973                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1974                 }
1975         }
1976
1977         spin_lock_irq(&phba->hbalock);
1978         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1979                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1980                     (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1981                         mp = (struct lpfc_dmabuf *) (mb->context1);
1982                         if (mp) {
1983                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1984                                 kfree(mp);
1985                         }
1986                         list_del(&mb->list);
1987                         mempool_free(mb, phba->mbox_mem_pool);
1988                         lpfc_nlp_put(ndlp);
1989                 }
1990         }
1991         spin_unlock_irq(&phba->hbalock);
1992
1993         lpfc_els_abort(phba,ndlp);
1994         spin_lock_irq(shost->host_lock);
1995         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
1996         spin_unlock_irq(shost->host_lock);
1997
1998         ndlp->nlp_last_elscmd = 0;
1999         del_timer_sync(&ndlp->nlp_delayfunc);
2000
2001         if (!list_empty(&ndlp->els_retry_evt.evt_listp))
2002                 list_del_init(&ndlp->els_retry_evt.evt_listp);
2003         if (!list_empty(&ndlp->dev_loss_evt.evt_listp))
2004                 list_del_init(&ndlp->dev_loss_evt.evt_listp);
2005
2006         if (!list_empty(&ndlp->dev_loss_evt.evt_listp)) {
2007                 list_del_init(&ndlp->dev_loss_evt.evt_listp);
2008                 complete((struct completion *)(ndlp->dev_loss_evt.evt_arg2));
2009         }
2010
2011         lpfc_unreg_rpi(vport, ndlp);
2012
2013         return 0;
2014 }
2015
2016 /*
2017  * Check to see if we can free the nlp back to the freelist.
2018  * If we are in the middle of using the nlp in the discovery state
2019  * machine, defer the free till we reach the end of the state machine.
2020  */
2021 static void
2022 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2023 {
2024         struct lpfc_rport_data *rdata;
2025
2026         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
2027                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2028         }
2029
2030         lpfc_cleanup_node(vport, ndlp);
2031
2032         /*
2033          * We can get here with a non-NULL ndlp->rport because when we
2034          * unregister a rport we don't break the rport/node linkage.  So if we
2035          * do, make sure we don't leaving any dangling pointers behind.
2036          */
2037         if (ndlp->rport) {
2038                 rdata = ndlp->rport->dd_data;
2039                 rdata->pnode = NULL;
2040                 ndlp->rport = NULL;
2041         }
2042 }
2043
2044 static int
2045 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2046               uint32_t did)
2047 {
2048         D_ID mydid, ndlpdid, matchdid;
2049
2050         if (did == Bcast_DID)
2051                 return 0;
2052
2053         if (ndlp->nlp_DID == 0) {
2054                 return 0;
2055         }
2056
2057         /* First check for Direct match */
2058         if (ndlp->nlp_DID == did)
2059                 return 1;
2060
2061         /* Next check for area/domain identically equals 0 match */
2062         mydid.un.word = vport->fc_myDID;
2063         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
2064                 return 0;
2065         }
2066
2067         matchdid.un.word = did;
2068         ndlpdid.un.word = ndlp->nlp_DID;
2069         if (matchdid.un.b.id == ndlpdid.un.b.id) {
2070                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
2071                     (mydid.un.b.area == matchdid.un.b.area)) {
2072                         if ((ndlpdid.un.b.domain == 0) &&
2073                             (ndlpdid.un.b.area == 0)) {
2074                                 if (ndlpdid.un.b.id)
2075                                         return 1;
2076                         }
2077                         return 0;
2078                 }
2079
2080                 matchdid.un.word = ndlp->nlp_DID;
2081                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
2082                     (mydid.un.b.area == ndlpdid.un.b.area)) {
2083                         if ((matchdid.un.b.domain == 0) &&
2084                             (matchdid.un.b.area == 0)) {
2085                                 if (matchdid.un.b.id)
2086                                         return 1;
2087                         }
2088                 }
2089         }
2090         return 0;
2091 }
2092
2093 /* Search for a nodelist entry */
2094 static struct lpfc_nodelist *
2095 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2096 {
2097         struct lpfc_hba  *phba = vport->phba;
2098         struct lpfc_nodelist *ndlp;
2099         uint32_t data1;
2100
2101         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2102                 if (lpfc_matchdid(vport, ndlp, did)) {
2103                         data1 = (((uint32_t) ndlp->nlp_state << 24) |
2104                                  ((uint32_t) ndlp->nlp_xri << 16) |
2105                                  ((uint32_t) ndlp->nlp_type << 8) |
2106                                  ((uint32_t) ndlp->nlp_rpi & 0xff));
2107                         lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
2108                                         "%d (%d):0929 FIND node DID "
2109                                         " Data: x%p x%x x%x x%x\n",
2110                                         phba->brd_no, vport->vpi,
2111                                         ndlp, ndlp->nlp_DID,
2112                                         ndlp->nlp_flag, data1);
2113                         return ndlp;
2114                 }
2115         }
2116
2117         /* FIND node did <did> NOT FOUND */
2118         lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
2119                         "%d (%d):0932 FIND node did x%x NOT FOUND.\n",
2120                         phba->brd_no, vport->vpi, did);
2121         return NULL;
2122 }
2123
2124 struct lpfc_nodelist *
2125 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2126 {
2127         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2128         struct lpfc_nodelist *ndlp;
2129
2130         spin_lock_irq(shost->host_lock);
2131         ndlp = __lpfc_findnode_did(vport, did);
2132         spin_unlock_irq(shost->host_lock);
2133         return ndlp;
2134 }
2135
2136 struct lpfc_nodelist *
2137 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
2138 {
2139         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2140         struct lpfc_nodelist *ndlp;
2141
2142         ndlp = lpfc_findnode_did(vport, did);
2143         if (!ndlp) {
2144                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
2145                     lpfc_rscn_payload_check(vport, did) == 0)
2146                         return NULL;
2147                 ndlp = (struct lpfc_nodelist *)
2148                      mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
2149                 if (!ndlp)
2150                         return NULL;
2151                 lpfc_nlp_init(vport, ndlp, did);
2152                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2153                 spin_lock_irq(shost->host_lock);
2154                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2155                 spin_unlock_irq(shost->host_lock);
2156                 return ndlp;
2157         }
2158         if (vport->fc_flag & FC_RSCN_MODE) {
2159                 if (lpfc_rscn_payload_check(vport, did)) {
2160                         spin_lock_irq(shost->host_lock);
2161                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2162                         spin_unlock_irq(shost->host_lock);
2163
2164                         /* Since this node is marked for discovery,
2165                          * delay timeout is not needed.
2166                          */
2167                         if (ndlp->nlp_flag & NLP_DELAY_TMO)
2168                                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2169                 } else
2170                         ndlp = NULL;
2171         } else {
2172                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
2173                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE)
2174                         return NULL;
2175                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2176                 spin_lock_irq(shost->host_lock);
2177                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2178                 spin_unlock_irq(shost->host_lock);
2179         }
2180         return ndlp;
2181 }
2182
2183 /* Build a list of nodes to discover based on the loopmap */
2184 void
2185 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
2186 {
2187         struct lpfc_hba  *phba = vport->phba;
2188         int j;
2189         uint32_t alpa, index;
2190
2191         if (!lpfc_is_link_up(phba))
2192                 return;
2193
2194         if (phba->fc_topology != TOPOLOGY_LOOP)
2195                 return;
2196
2197         /* Check for loop map present or not */
2198         if (phba->alpa_map[0]) {
2199                 for (j = 1; j <= phba->alpa_map[0]; j++) {
2200                         alpa = phba->alpa_map[j];
2201                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
2202                                 continue;
2203                         lpfc_setup_disc_node(vport, alpa);
2204                 }
2205         } else {
2206                 /* No alpamap, so try all alpa's */
2207                 for (j = 0; j < FC_MAXLOOP; j++) {
2208                         /* If cfg_scan_down is set, start from highest
2209                          * ALPA (0xef) to lowest (0x1).
2210                          */
2211                         if (phba->cfg_scan_down)
2212                                 index = j;
2213                         else
2214                                 index = FC_MAXLOOP - j - 1;
2215                         alpa = lpfcAlpaArray[index];
2216                         if ((vport->fc_myDID & 0xff) == alpa)
2217                                 continue;
2218                         lpfc_setup_disc_node(vport, alpa);
2219                 }
2220         }
2221         return;
2222 }
2223
2224 void
2225 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
2226 {
2227         LPFC_MBOXQ_t *mbox;
2228         struct lpfc_sli *psli = &phba->sli;
2229         struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
2230         struct lpfc_sli_ring *fcp_ring   = &psli->ring[psli->fcp_ring];
2231         struct lpfc_sli_ring *next_ring  = &psli->ring[psli->next_ring];
2232         int  rc;
2233
2234         /*
2235          * if it's not a physical port or if we already send
2236          * clear_la then don't send it.
2237          */
2238         if ((phba->link_state >= LPFC_CLEAR_LA) ||
2239             (vport->port_type != LPFC_PHYSICAL_PORT))
2240                 return;
2241
2242                         /* Link up discovery */
2243         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
2244                 phba->link_state = LPFC_CLEAR_LA;
2245                 lpfc_clear_la(phba, mbox);
2246                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
2247                 mbox->vport = vport;
2248                 rc = lpfc_sli_issue_mbox(phba, mbox, (MBX_NOWAIT |
2249                                                       MBX_STOP_IOCB));
2250                 if (rc == MBX_NOT_FINISHED) {
2251                         mempool_free(mbox, phba->mbox_mem_pool);
2252                         lpfc_disc_flush_list(vport);
2253                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2254                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2255                         next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2256                         phba->link_state = LPFC_HBA_ERROR;
2257                 }
2258         }
2259 }
2260
2261 /* Reg_vpi to tell firmware to resume normal operations */
2262 void
2263 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
2264 {
2265         LPFC_MBOXQ_t *regvpimbox;
2266
2267         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2268         if (regvpimbox) {
2269                 lpfc_reg_vpi(phba, vport->vpi, vport->fc_myDID, regvpimbox);
2270                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
2271                 regvpimbox->vport = vport;
2272                 if (lpfc_sli_issue_mbox(phba, regvpimbox,
2273                                         (MBX_NOWAIT | MBX_STOP_IOCB))
2274                                         == MBX_NOT_FINISHED) {
2275                         mempool_free(regvpimbox, phba->mbox_mem_pool);
2276                 }
2277         }
2278 }
2279
2280 /* Start Link up / RSCN discovery on NPR nodes */
2281 void
2282 lpfc_disc_start(struct lpfc_vport *vport)
2283 {
2284         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2285         struct lpfc_hba  *phba = vport->phba;
2286         uint32_t num_sent;
2287         uint32_t clear_la_pending;
2288         int did_changed;
2289
2290         if (!lpfc_is_link_up(phba))
2291                 return;
2292
2293         if (phba->link_state == LPFC_CLEAR_LA)
2294                 clear_la_pending = 1;
2295         else
2296                 clear_la_pending = 0;
2297
2298         if (vport->port_state < LPFC_VPORT_READY)
2299                 vport->port_state = LPFC_DISC_AUTH;
2300
2301         lpfc_set_disctmo(vport);
2302
2303         if (vport->fc_prevDID == vport->fc_myDID)
2304                 did_changed = 0;
2305         else
2306                 did_changed = 1;
2307
2308         vport->fc_prevDID = vport->fc_myDID;
2309         vport->num_disc_nodes = 0;
2310
2311         /* Start Discovery state <hba_state> */
2312         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
2313                         "%d (%d):0202 Start Discovery hba state x%x "
2314                         "Data: x%x x%x x%x\n",
2315                         phba->brd_no, vport->vpi, vport->port_state,
2316                         vport->fc_flag, vport->fc_plogi_cnt,
2317                         vport->fc_adisc_cnt);
2318
2319         /* First do ADISCs - if any */
2320         num_sent = lpfc_els_disc_adisc(vport);
2321
2322         if (num_sent)
2323                 return;
2324
2325         /*
2326          * For SLI3, cmpl_reg_vpi will set port_state to READY, and
2327          * continue discovery.
2328          */
2329         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2330             !(vport->fc_flag & FC_RSCN_MODE)) {
2331                 lpfc_issue_reg_vpi(phba, vport);
2332                 return;
2333         }
2334
2335         /*
2336          * For SLI2, we need to set port_state to READY and continue
2337          * discovery.
2338          */
2339         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
2340                 /* If we get here, there is nothing to ADISC */
2341                 if (vport->port_type == LPFC_PHYSICAL_PORT)
2342                         lpfc_issue_clear_la(phba, vport);
2343
2344                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
2345                         vport->num_disc_nodes = 0;
2346                         /* go thru NPR nodes and issue ELS PLOGIs */
2347                         if (vport->fc_npr_cnt)
2348                                 lpfc_els_disc_plogi(vport);
2349
2350                         if (!vport->num_disc_nodes) {
2351                                 spin_lock_irq(shost->host_lock);
2352                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2353                                 spin_unlock_irq(shost->host_lock);
2354                                 lpfc_can_disctmo(vport);
2355                         }
2356                 }
2357                 vport->port_state = LPFC_VPORT_READY;
2358         } else {
2359                 /* Next do PLOGIs - if any */
2360                 num_sent = lpfc_els_disc_plogi(vport);
2361
2362                 if (num_sent)
2363                         return;
2364
2365                 if (vport->fc_flag & FC_RSCN_MODE) {
2366                         /* Check to see if more RSCNs came in while we
2367                          * were processing this one.
2368                          */
2369                         if ((vport->fc_rscn_id_cnt == 0) &&
2370                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
2371                                 spin_lock_irq(shost->host_lock);
2372                                 vport->fc_flag &= ~FC_RSCN_MODE;
2373                                 spin_unlock_irq(shost->host_lock);
2374                                 lpfc_can_disctmo(vport);
2375                         } else
2376                                 lpfc_els_handle_rscn(vport);
2377                 }
2378         }
2379         return;
2380 }
2381
2382 /*
2383  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
2384  *  ring the match the sppecified nodelist.
2385  */
2386 static void
2387 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
2388 {
2389         LIST_HEAD(completions);
2390         struct lpfc_sli *psli;
2391         IOCB_t     *icmd;
2392         struct lpfc_iocbq    *iocb, *next_iocb;
2393         struct lpfc_sli_ring *pring;
2394
2395         psli = &phba->sli;
2396         pring = &psli->ring[LPFC_ELS_RING];
2397
2398         /* Error matching iocb on txq or txcmplq
2399          * First check the txq.
2400          */
2401         spin_lock_irq(&phba->hbalock);
2402         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2403                 if (iocb->context1 != ndlp) {
2404                         continue;
2405                 }
2406                 icmd = &iocb->iocb;
2407                 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
2408                     (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
2409
2410                         list_move_tail(&iocb->list, &completions);
2411                         pring->txq_cnt--;
2412                 }
2413         }
2414
2415         /* Next check the txcmplq */
2416         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
2417                 if (iocb->context1 != ndlp) {
2418                         continue;
2419                 }
2420                 icmd = &iocb->iocb;
2421                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
2422                     icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
2423                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
2424                 }
2425         }
2426         spin_unlock_irq(&phba->hbalock);
2427
2428         while (!list_empty(&completions)) {
2429                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
2430                 list_del_init(&iocb->list);
2431
2432                 if (!iocb->iocb_cmpl)
2433                         lpfc_sli_release_iocbq(phba, iocb);
2434                 else {
2435                         icmd = &iocb->iocb;
2436                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2437                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
2438                         (iocb->iocb_cmpl) (phba, iocb, iocb);
2439                 }
2440         }
2441 }
2442
2443 void
2444 lpfc_disc_flush_list(struct lpfc_vport *vport)
2445 {
2446         struct lpfc_nodelist *ndlp, *next_ndlp;
2447         struct lpfc_hba *phba = vport->phba;
2448
2449         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
2450                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2451                                          nlp_listp) {
2452                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2453                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
2454                                 lpfc_free_tx(phba, ndlp);
2455                                 lpfc_nlp_put(ndlp);
2456                         }
2457                 }
2458         }
2459 }
2460
2461 void
2462 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
2463 {
2464         lpfc_els_flush_rscn(vport);
2465         lpfc_els_flush_cmd(vport);
2466         lpfc_disc_flush_list(vport);
2467 }
2468
2469 /*****************************************************************************/
2470 /*
2471  * NAME:     lpfc_disc_timeout
2472  *
2473  * FUNCTION: Fibre Channel driver discovery timeout routine.
2474  *
2475  * EXECUTION ENVIRONMENT: interrupt only
2476  *
2477  * CALLED FROM:
2478  *      Timer function
2479  *
2480  * RETURNS:
2481  *      none
2482  */
2483 /*****************************************************************************/
2484 void
2485 lpfc_disc_timeout(unsigned long ptr)
2486 {
2487         struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
2488         struct lpfc_hba   *phba = vport->phba;
2489         unsigned long flags = 0;
2490
2491         if (unlikely(!phba))
2492                 return;
2493
2494         if ((vport->work_port_events & WORKER_DISC_TMO) == 0) {
2495                 spin_lock_irqsave(&vport->work_port_lock, flags);
2496                 vport->work_port_events |= WORKER_DISC_TMO;
2497                 spin_unlock_irqrestore(&vport->work_port_lock, flags);
2498
2499                 spin_lock_irqsave(&phba->hbalock, flags);
2500                 if (phba->work_wait)
2501                         lpfc_worker_wake_up(phba);
2502                 spin_unlock_irqrestore(&phba->hbalock, flags);
2503         }
2504         return;
2505 }
2506
2507 static void
2508 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
2509 {
2510         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2511         struct lpfc_hba  *phba = vport->phba;
2512         struct lpfc_sli  *psli = &phba->sli;
2513         struct lpfc_nodelist *ndlp, *next_ndlp;
2514         LPFC_MBOXQ_t *initlinkmbox;
2515         int rc, clrlaerr = 0;
2516
2517         if (!(vport->fc_flag & FC_DISC_TMO))
2518                 return;
2519
2520         spin_lock_irq(shost->host_lock);
2521         vport->fc_flag &= ~FC_DISC_TMO;
2522         spin_unlock_irq(shost->host_lock);
2523
2524         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2525                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
2526                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
2527
2528         switch (vport->port_state) {
2529
2530         case LPFC_LOCAL_CFG_LINK:
2531         /* port_state is identically  LPFC_LOCAL_CFG_LINK while waiting for
2532          * FAN
2533          */
2534                                 /* FAN timeout */
2535                 lpfc_printf_log(phba, KERN_WARNING, LOG_DISCOVERY,
2536                                 "%d (%d):0221 FAN timeout\n",
2537                                 phba->brd_no, vport->vpi);
2538
2539                 /* Start discovery by sending FLOGI, clean up old rpis */
2540                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2541                                          nlp_listp) {
2542                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
2543                                 continue;
2544                         if (ndlp->nlp_type & NLP_FABRIC) {
2545                                 /* Clean up the ndlp on Fabric connections */
2546                                 lpfc_drop_node(vport, ndlp);
2547                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2548                                 /* Fail outstanding IO now since device
2549                                  * is marked for PLOGI.
2550                                  */
2551                                 lpfc_unreg_rpi(vport, ndlp);
2552                         }
2553                 }
2554                 if (vport->port_state != LPFC_FLOGI) {
2555                         vport->port_state = LPFC_FLOGI;
2556                         lpfc_set_disctmo(vport);
2557                         lpfc_initial_flogi(vport);
2558                 }
2559                 break;
2560
2561         case LPFC_FDISC:
2562         case LPFC_FLOGI:
2563         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
2564                 /* Initial FLOGI timeout */
2565                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
2566                                 "%d (%d):0222 Initial %s timeout\n",
2567                                 phba->brd_no, vport->vpi,
2568                                 vport->vpi ? "FLOGI" : "FDISC");
2569
2570                 /* Assume no Fabric and go on with discovery.
2571                  * Check for outstanding ELS FLOGI to abort.
2572                  */
2573
2574                 /* FLOGI failed, so just use loop map to make discovery list */
2575                 lpfc_disc_list_loopmap(vport);
2576
2577                 /* Start discovery */
2578                 lpfc_disc_start(vport);
2579                 break;
2580
2581         case LPFC_FABRIC_CFG_LINK:
2582         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
2583            NameServer login */
2584                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
2585                                 "%d (%d):0223 Timeout while waiting for "
2586                                 "NameServer login\n",
2587                                 phba->brd_no, vport->vpi);
2588
2589                 /* Next look for NameServer ndlp */
2590                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
2591                 if (ndlp)
2592                         lpfc_nlp_put(ndlp);
2593                 /* Start discovery */
2594                 lpfc_disc_start(vport);
2595                 break;
2596
2597         case LPFC_NS_QRY:
2598         /* Check for wait for NameServer Rsp timeout */
2599                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
2600                                 "%d (%d):0224 NameServer Query timeout "
2601                                 "Data: x%x x%x\n",
2602                                 phba->brd_no, vport->vpi,
2603                                 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2604
2605                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
2606                         /* Try it one more time */
2607                         vport->fc_ns_retry++;
2608                         rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
2609                                          vport->fc_ns_retry, 0);
2610                         if (rc == 0)
2611                                 break;
2612                 }
2613                 vport->fc_ns_retry = 0;
2614
2615                 /*
2616                  * Discovery is over.
2617                  * set port_state to PORT_READY if SLI2.
2618                  * cmpl_reg_vpi will set port_state to READY for SLI3.
2619                  */
2620                 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2621                         lpfc_issue_reg_vpi(phba, vport);
2622                 else  { /* NPIV Not enabled */
2623                         lpfc_issue_clear_la(phba, vport);
2624                         vport->port_state = LPFC_VPORT_READY;
2625                 }
2626
2627                 /* Setup and issue mailbox INITIALIZE LINK command */
2628                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2629                 if (!initlinkmbox) {
2630                         lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
2631                                         "%d (%d):0206 Device Discovery "
2632                                         "completion error\n",
2633                                         phba->brd_no, vport->vpi);
2634                         phba->link_state = LPFC_HBA_ERROR;
2635                         break;
2636                 }
2637
2638                 lpfc_linkdown(phba);
2639                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
2640                                phba->cfg_link_speed);
2641                 initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
2642                 initlinkmbox->vport = vport;
2643                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2644                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox,
2645                                          (MBX_NOWAIT | MBX_STOP_IOCB));
2646                 lpfc_set_loopback_flag(phba);
2647                 if (rc == MBX_NOT_FINISHED)
2648                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
2649
2650                 break;
2651
2652         case LPFC_DISC_AUTH:
2653         /* Node Authentication timeout */
2654                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
2655                                 "%d (%d):0227 Node Authentication timeout\n",
2656                                 phba->brd_no, vport->vpi);
2657                 lpfc_disc_flush_list(vport);
2658
2659                 /*
2660                  * set port_state to PORT_READY if SLI2.
2661                  * cmpl_reg_vpi will set port_state to READY for SLI3.
2662                  */
2663                 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2664                         lpfc_issue_reg_vpi(phba, vport);
2665                 else {  /* NPIV Not enabled */
2666                         lpfc_issue_clear_la(phba, vport);
2667                         vport->port_state = LPFC_VPORT_READY;
2668                 }
2669                 break;
2670
2671         case LPFC_VPORT_READY:
2672                 if (vport->fc_flag & FC_RSCN_MODE) {
2673                         lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
2674                                         "%d (%d):0231 RSCN timeout Data: x%x "
2675                                         "x%x\n",
2676                                         phba->brd_no, vport->vpi,
2677                                         vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2678
2679                         /* Cleanup any outstanding ELS commands */
2680                         lpfc_els_flush_cmd(vport);
2681
2682                         lpfc_els_flush_rscn(vport);
2683                         lpfc_disc_flush_list(vport);
2684                 }
2685                 break;
2686
2687         default:
2688                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
2689                                 "%d (%d):0229 Unexpected discovery timeout, "
2690                                 "vport State x%x\n",
2691                                 phba->brd_no, vport->vpi, vport->port_state);
2692
2693                 break;
2694         }
2695
2696         switch (phba->link_state) {
2697         case LPFC_CLEAR_LA:
2698                                 /* CLEAR LA timeout */
2699                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
2700                                 "%d (%d):0228 CLEAR LA timeout\n",
2701                                 phba->brd_no, vport->vpi);
2702                 clrlaerr = 1;
2703                 break;
2704
2705         case LPFC_LINK_UNKNOWN:
2706         case LPFC_WARM_START:
2707         case LPFC_INIT_START:
2708         case LPFC_INIT_MBX_CMDS:
2709         case LPFC_LINK_DOWN:
2710         case LPFC_LINK_UP:
2711         case LPFC_HBA_ERROR:
2712                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
2713                                 "%d (%d):0230 Unexpected timeout, hba link "
2714                                 "state x%x\n",
2715                                 phba->brd_no, vport->vpi, phba->link_state);
2716                 clrlaerr = 1;
2717                 break;
2718
2719         case LPFC_HBA_READY:
2720                 break;
2721         }
2722
2723         if (clrlaerr) {
2724                 lpfc_disc_flush_list(vport);
2725                 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2726                 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2727                 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2728                 vport->port_state = LPFC_VPORT_READY;
2729         }
2730
2731         return;
2732 }
2733
2734 /*
2735  * This routine handles processing a NameServer REG_LOGIN mailbox
2736  * command upon completion. It is setup in the LPFC_MBOXQ
2737  * as the completion routine when the command is
2738  * handed off to the SLI layer.
2739  */
2740 void
2741 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2742 {
2743         MAILBOX_t *mb = &pmb->mb;
2744         struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *) (pmb->context1);
2745         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2746         struct lpfc_vport    *vport = pmb->vport;
2747
2748         pmb->context1 = NULL;
2749
2750         ndlp->nlp_rpi = mb->un.varWords[0];
2751         ndlp->nlp_type |= NLP_FABRIC;
2752         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2753
2754         /*
2755          * Start issuing Fabric-Device Management Interface (FDMI) command to
2756          * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
2757          * fdmi-on=2 (supporting RPA/hostnmae)
2758          */
2759
2760         if (phba->cfg_fdmi_on == 1)
2761                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
2762         else
2763                 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
2764
2765                                 /* Mailbox took a reference to the node */
2766         lpfc_nlp_put(ndlp);
2767         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2768         kfree(mp);
2769         mempool_free(pmb, phba->mbox_mem_pool);
2770
2771         return;
2772 }
2773
2774 static int
2775 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
2776 {
2777         uint16_t *rpi = param;
2778
2779         return ndlp->nlp_rpi == *rpi;
2780 }
2781
2782 static int
2783 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
2784 {
2785         return memcmp(&ndlp->nlp_portname, param,
2786                       sizeof(ndlp->nlp_portname)) == 0;
2787 }
2788
2789 struct lpfc_nodelist *
2790 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
2791 {
2792         struct lpfc_nodelist *ndlp;
2793
2794         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2795                 if (ndlp->nlp_state != NLP_STE_UNUSED_NODE &&
2796                     filter(ndlp, param))
2797                         return ndlp;
2798         }
2799         return NULL;
2800 }
2801
2802 /*
2803  * Search node lists for a remote port matching filter criteria
2804  * Caller needs to hold host_lock before calling this routine.
2805  */
2806 struct lpfc_nodelist *
2807 lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
2808 {
2809         struct Scsi_Host     *shost = lpfc_shost_from_vport(vport);
2810         struct lpfc_nodelist *ndlp;
2811
2812         spin_lock_irq(shost->host_lock);
2813         ndlp = __lpfc_find_node(vport, filter, param);
2814         spin_unlock_irq(shost->host_lock);
2815         return ndlp;
2816 }
2817
2818 /*
2819  * This routine looks up the ndlp lists for the given RPI. If rpi found it
2820  * returns the node list element pointer else return NULL.
2821  */
2822 struct lpfc_nodelist *
2823 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
2824 {
2825         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
2826 }
2827
2828 struct lpfc_nodelist *
2829 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
2830 {
2831         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2832         struct lpfc_nodelist *ndlp;
2833
2834         spin_lock_irq(shost->host_lock);
2835         ndlp = __lpfc_findnode_rpi(vport, rpi);
2836         spin_unlock_irq(shost->host_lock);
2837         return ndlp;
2838 }
2839
2840 /*
2841  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
2842  * returns the node element list pointer else return NULL.
2843  */
2844 struct lpfc_nodelist *
2845 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
2846 {
2847         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2848         struct lpfc_nodelist *ndlp;
2849
2850         spin_lock_irq(shost->host_lock);
2851         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
2852         spin_unlock_irq(shost->host_lock);
2853         return ndlp;
2854 }
2855
2856 void
2857 lpfc_dev_loss_delay(unsigned long ptr)
2858 {
2859         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) ptr;
2860         struct lpfc_vport *vport = ndlp->vport;
2861         struct lpfc_hba   *phba = vport->phba;
2862         struct lpfc_work_evt  *evtp = &ndlp->dev_loss_evt;
2863         unsigned long flags;
2864
2865         evtp = &ndlp->dev_loss_evt;
2866
2867         spin_lock_irqsave(&phba->hbalock, flags);
2868         if (!list_empty(&evtp->evt_listp)) {
2869                 spin_unlock_irqrestore(&phba->hbalock, flags);
2870                 return;
2871         }
2872
2873         evtp->evt_arg1  = ndlp;
2874         evtp->evt       = LPFC_EVT_DEV_LOSS_DELAY;
2875         list_add_tail(&evtp->evt_listp, &phba->work_list);
2876         if (phba->work_wait)
2877                 lpfc_worker_wake_up(phba);
2878         spin_unlock_irqrestore(&phba->hbalock, flags);
2879         return;
2880 }
2881
2882 void
2883 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2884               uint32_t did)
2885 {
2886         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
2887         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
2888         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
2889         init_timer(&ndlp->nlp_delayfunc);
2890         ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
2891         ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
2892         ndlp->nlp_DID = did;
2893         ndlp->vport = vport;
2894         ndlp->nlp_sid = NLP_NO_SID;
2895         INIT_LIST_HEAD(&ndlp->nlp_listp);
2896         kref_init(&ndlp->kref);
2897
2898         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2899                 "node init:       did:x%x",
2900                 ndlp->nlp_DID, 0, 0);
2901
2902         return;
2903 }
2904
2905 void
2906 lpfc_nlp_release(struct kref *kref)
2907 {
2908         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
2909                                                   kref);
2910
2911         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2912                 "node release:    did:x%x flg:x%x type:x%x",
2913                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
2914
2915         lpfc_nlp_remove(ndlp->vport, ndlp);
2916         mempool_free(ndlp, ndlp->vport->phba->nlp_mem_pool);
2917 }
2918
2919 struct lpfc_nodelist *
2920 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
2921 {
2922         if (ndlp)
2923                 kref_get(&ndlp->kref);
2924         return ndlp;
2925 }
2926
2927 int
2928 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
2929 {
2930         return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0;
2931 }