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) 2004-2006 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
  40 /* AlpaArray for assignment of scsid for scan-down and bind_method */
  41 static uint8_t lpfcAlpaArray[] = {
  42         0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
  43         0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
  44         0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
  45         0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
  46         0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
  47         0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
  48         0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
  49         0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
  50         0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
  51         0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
  52         0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
  53         0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
  54         0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
  55 };
  56
  57 static void lpfc_disc_timeout_handler(struct lpfc_hba *);
  58
  59 static void
  60 lpfc_process_nodev_timeout(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
  61 {
  62         uint8_t *name = (uint8_t *)&ndlp->nlp_portname;
  63         int warn_on = 0;
  64
  65         spin_lock_irq(phba->host->host_lock);
  66         if (!(ndlp->nlp_flag & NLP_NODEV_TMO)) {
  67                 spin_unlock_irq(phba->host->host_lock);
  68                 return;
  69         }
  70
  71         /*
  72          * If a discovery event readded nodev_timer after timer
  73          * firing and before processing the timer, cancel the
  74          * nlp_tmofunc.
  75          */
  76         spin_unlock_irq(phba->host->host_lock);
  77         del_timer_sync(&ndlp->nlp_tmofunc);
  78         spin_lock_irq(phba->host->host_lock);
  79
  80         ndlp->nlp_flag &= ~NLP_NODEV_TMO;
  81
  82         if (ndlp->nlp_sid != NLP_NO_SID) {
  83                 warn_on = 1;
  84                 /* flush the target */
  85                 lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring],
  86                         ndlp->nlp_sid, 0, 0, LPFC_CTX_TGT);
  87         }
  88         spin_unlock_irq(phba->host->host_lock);
  89
  90         if (warn_on) {
  91                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
  92                                 "%d:0203 Nodev timeout on "
  93                                 "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
  94                                 "NPort x%x Data: x%x x%x x%x\n",
  95                                 phba->brd_no,
  96                                 *name, *(name+1), *(name+2), *(name+3),
  97                                 *(name+4), *(name+5), *(name+6), *(name+7),
  98                                 ndlp->nlp_DID, ndlp->nlp_flag,
  99                                 ndlp->nlp_state, ndlp->nlp_rpi);
 100         } else {
 101                 lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
 102                                 "%d:0204 Nodev timeout on "
 103                                 "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 104                                 "NPort x%x Data: x%x x%x x%x\n",
 105                                 phba->brd_no,
 106                                 *name, *(name+1), *(name+2), *(name+3),
 107                                 *(name+4), *(name+5), *(name+6), *(name+7),
 108                                 ndlp->nlp_DID, ndlp->nlp_flag,
 109                                 ndlp->nlp_state, ndlp->nlp_rpi);
 110         }
 111
 112         lpfc_disc_state_machine(phba, ndlp, NULL, NLP_EVT_DEVICE_RM);
 113         return;
 114 }
 115
 116 static void
 117 lpfc_work_list_done(struct lpfc_hba * phba)
 118 {
 119         struct lpfc_work_evt  *evtp = NULL;
 120         struct lpfc_nodelist  *ndlp;
 121         int free_evt;
 122
 123         spin_lock_irq(phba->host->host_lock);
 124         while(!list_empty(&phba->work_list)) {
 125                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
 126                                  evt_listp);
 127                 spin_unlock_irq(phba->host->host_lock);
 128                 free_evt = 1;
 129                 switch (evtp->evt) {
 130                 case LPFC_EVT_NODEV_TMO:
 131                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 132                         lpfc_process_nodev_timeout(phba, ndlp);
 133                         free_evt = 0;
 134                         break;
 135                 case LPFC_EVT_ELS_RETRY:
 136                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 137                         lpfc_els_retry_delay_handler(ndlp);
 138                         free_evt = 0;
 139                         break;
 140                 case LPFC_EVT_ONLINE:
 141                         if (phba->hba_state < LPFC_LINK_DOWN)
 142                                 *(int *)(evtp->evt_arg1)  = lpfc_online(phba);
 143                         else
 144                                 *(int *)(evtp->evt_arg1)  = 0;
 145                         complete((struct completion *)(evtp->evt_arg2));
 146                         break;
 147                 case LPFC_EVT_OFFLINE:
 148                         if (phba->hba_state >= LPFC_LINK_DOWN)
 149                                 lpfc_offline(phba);
 150                         lpfc_sli_brdrestart(phba);
 151                         *(int *)(evtp->evt_arg1) =
 152                                 lpfc_sli_brdready(phba,HS_FFRDY | HS_MBRDY);
 153                         complete((struct completion *)(evtp->evt_arg2));
 154                         break;
 155                 case LPFC_EVT_WARM_START:
 156                         if (phba->hba_state >= LPFC_LINK_DOWN)
 157                                 lpfc_offline(phba);
 158                         lpfc_reset_barrier(phba);
 159                         lpfc_sli_brdreset(phba);
 160                         lpfc_hba_down_post(phba);
 161                         *(int *)(evtp->evt_arg1) =
 162                                 lpfc_sli_brdready(phba, HS_MBRDY);
 163                         complete((struct completion *)(evtp->evt_arg2));
 164                         break;
 165                 case LPFC_EVT_KILL:
 166                         if (phba->hba_state >= LPFC_LINK_DOWN)
 167                                 lpfc_offline(phba);
 168                         *(int *)(evtp->evt_arg1)
 169                                 = (phba->stopped) ? 0 : lpfc_sli_brdkill(phba);
 170                         complete((struct completion *)(evtp->evt_arg2));
 171                         break;
 172                 }
 173                 if (free_evt)
 174                         kfree(evtp);
 175                 spin_lock_irq(phba->host->host_lock);
 176         }
 177         spin_unlock_irq(phba->host->host_lock);
 178
 179 }
 180
 181 static void
 182 lpfc_work_done(struct lpfc_hba * phba)
 183 {
 184         struct lpfc_sli_ring *pring;
 185         int i;
 186         uint32_t ha_copy;
 187         uint32_t control;
 188         uint32_t work_hba_events;
 189
 190         spin_lock_irq(phba->host->host_lock);
 191         ha_copy = phba->work_ha;
 192         phba->work_ha = 0;
 193         work_hba_events=phba->work_hba_events;
 194         spin_unlock_irq(phba->host->host_lock);
 195
 196         if (ha_copy & HA_ERATT)
 197                 lpfc_handle_eratt(phba);
 198
 199         if (ha_copy & HA_MBATT)
 200                 lpfc_sli_handle_mb_event(phba);
 201
 202         if (ha_copy & HA_LATT)
 203                 lpfc_handle_latt(phba);
 204
 205         if (work_hba_events & WORKER_DISC_TMO)
 206                 lpfc_disc_timeout_handler(phba);
 207
 208         if (work_hba_events & WORKER_ELS_TMO)
 209                 lpfc_els_timeout_handler(phba);
 210
 211         if (work_hba_events & WORKER_MBOX_TMO)
 212                 lpfc_mbox_timeout_handler(phba);
 213
 214         if (work_hba_events & WORKER_FDMI_TMO)
 215                 lpfc_fdmi_tmo_handler(phba);
 216
 217         spin_lock_irq(phba->host->host_lock);
 218         phba->work_hba_events &= ~work_hba_events;
 219         spin_unlock_irq(phba->host->host_lock);
 220
 221         for (i = 0; i < phba->sli.num_rings; i++, ha_copy >>= 4) {
 222                 pring = &phba->sli.ring[i];
 223                 if ((ha_copy & HA_RXATT)
 224                     || (pring->flag & LPFC_DEFERRED_RING_EVENT)) {
 225                         if (pring->flag & LPFC_STOP_IOCB_MASK) {
 226                                 pring->flag |= LPFC_DEFERRED_RING_EVENT;
 227                         } else {
 228                                 lpfc_sli_handle_slow_ring_event(phba, pring,
 229                                                                 (ha_copy &
 230                                                                  HA_RXMASK));
 231                                 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
 232                         }
 233                         /*
 234                          * Turn on Ring interrupts
 235                          */
 236                         spin_lock_irq(phba->host->host_lock);
 237                         control = readl(phba->HCregaddr);
 238                         control |= (HC_R0INT_ENA << i);
 239                         writel(control, phba->HCregaddr);
 240                         readl(phba->HCregaddr); /* flush */
 241                         spin_unlock_irq(phba->host->host_lock);
 242                 }
 243         }
 244
 245         lpfc_work_list_done (phba);
 246
 247 }
 248
 249 static int
 250 check_work_wait_done(struct lpfc_hba *phba) {
 251
 252         spin_lock_irq(phba->host->host_lock);
 253         if (phba->work_ha ||
 254             phba->work_hba_events ||
 255             (!list_empty(&phba->work_list)) ||
 256             kthread_should_stop()) {
 257                 spin_unlock_irq(phba->host->host_lock);
 258                 return 1;
 259         } else {
 260                 spin_unlock_irq(phba->host->host_lock);
 261                 return 0;
 262         }
 263 }
 264
 265 int
 266 lpfc_do_work(void *p)
 267 {
 268         struct lpfc_hba *phba = p;
 269         int rc;
 270         DECLARE_WAIT_QUEUE_HEAD(work_waitq);
 271
 272         set_user_nice(current, -20);
 273         phba->work_wait = &work_waitq;
 274
 275         while (1) {
 276
 277                 rc = wait_event_interruptible(work_waitq,
 278                                                 check_work_wait_done(phba));
 279                 BUG_ON(rc);
 280
 281                 if (kthread_should_stop())
 282                         break;
 283
 284                 lpfc_work_done(phba);
 285
 286         }
 287         phba->work_wait = NULL;
 288         return 0;
 289 }
 290
 291 /*
 292  * This is only called to handle FC worker events. Since this a rare
 293  * occurance, we allocate a struct lpfc_work_evt structure here instead of
 294  * embedding it in the IOCB.
 295  */
 296 int
 297 lpfc_workq_post_event(struct lpfc_hba * phba, void *arg1, void *arg2,
 298                       uint32_t evt)
 299 {
 300         struct lpfc_work_evt  *evtp;
 301
 302         /*
 303          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
 304          * be queued to worker thread for processing
 305          */
 306         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_KERNEL);
 307         if (!evtp)
 308                 return 0;
 309
 310         evtp->evt_arg1  = arg1;
 311         evtp->evt_arg2  = arg2;
 312         evtp->evt       = evt;
 313
 314         spin_lock_irq(phba->host->host_lock);
 315         list_add_tail(&evtp->evt_listp, &phba->work_list);
 316         if (phba->work_wait)
 317                 wake_up(phba->work_wait);
 318         spin_unlock_irq(phba->host->host_lock);
 319
 320         return 1;
 321 }
 322
 323 int
 324 lpfc_linkdown(struct lpfc_hba * phba)
 325 {
 326         struct lpfc_sli       *psli;
 327         struct lpfc_nodelist  *ndlp, *next_ndlp;
 328         struct list_head *listp, *node_list[7];
 329         LPFC_MBOXQ_t     *mb;
 330         int               rc, i;
 331
 332         psli = &phba->sli;
 333         /* sysfs or selective reset may call this routine to clean up */
 334         if (phba->hba_state >= LPFC_LINK_DOWN) {
 335                 if (phba->hba_state == LPFC_LINK_DOWN)
 336                         return 0;
 337
 338                 spin_lock_irq(phba->host->host_lock);
 339                 phba->hba_state = LPFC_LINK_DOWN;
 340                 spin_unlock_irq(phba->host->host_lock);
 341         }
 342
 343         /* Clean up any firmware default rpi's */
 344         if ((mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))) {
 345                 lpfc_unreg_did(phba, 0xffffffff, mb);
 346                 mb->mbox_cmpl=lpfc_sli_def_mbox_cmpl;
 347                 if (lpfc_sli_issue_mbox(phba, mb, (MBX_NOWAIT | MBX_STOP_IOCB))
 348                     == MBX_NOT_FINISHED) {
 349                         mempool_free( mb, phba->mbox_mem_pool);
 350                 }
 351         }
 352
 353         /* Cleanup any outstanding RSCN activity */
 354         lpfc_els_flush_rscn(phba);
 355
 356         /* Cleanup any outstanding ELS commands */
 357         lpfc_els_flush_cmd(phba);
 358
 359         /* Issue a LINK DOWN event to all nodes */
 360         node_list[0] = &phba->fc_npr_list;  /* MUST do this list first */
 361         node_list[1] = &phba->fc_nlpmap_list;
 362         node_list[2] = &phba->fc_nlpunmap_list;
 363         node_list[3] = &phba->fc_prli_list;
 364         node_list[4] = &phba->fc_reglogin_list;
 365         node_list[5] = &phba->fc_adisc_list;
 366         node_list[6] = &phba->fc_plogi_list;
 367         for (i = 0; i < 7; i++) {
 368                 listp = node_list[i];
 369                 if (list_empty(listp))
 370                         continue;
 371
 372                 list_for_each_entry_safe(ndlp, next_ndlp, listp, nlp_listp) {
 373
 374                         rc = lpfc_disc_state_machine(phba, ndlp, NULL,
 375                                              NLP_EVT_DEVICE_RECOVERY);
 376
 377                         /* Check config parameter use-adisc or FCP-2 */
 378                         if ((rc != NLP_STE_FREED_NODE) &&
 379                                 (phba->cfg_use_adisc == 0) &&
 380                                 !(ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE)) {
 381                                 /* We know we will have to relogin, so
 382                                  * unreglogin the rpi right now to fail
 383                                  * any outstanding I/Os quickly.
 384                                  */
 385                                 lpfc_unreg_rpi(phba, ndlp);
 386                         }
 387                 }
 388         }
 389
 390         /* free any ndlp's on unused list */
 391         list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_unused_list,
 392                                 nlp_listp) {
 393                 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 394         }
 395
 396         /* Setup myDID for link up if we are in pt2pt mode */
 397         if (phba->fc_flag & FC_PT2PT) {
 398                 phba->fc_myDID = 0;
 399                 if ((mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))) {
 400                         lpfc_config_link(phba, mb);
 401                         mb->mbox_cmpl=lpfc_sli_def_mbox_cmpl;
 402                         if (lpfc_sli_issue_mbox
 403                             (phba, mb, (MBX_NOWAIT | MBX_STOP_IOCB))
 404                             == MBX_NOT_FINISHED) {
 405                                 mempool_free( mb, phba->mbox_mem_pool);
 406                         }
 407                 }
 408                 spin_lock_irq(phba->host->host_lock);
 409                 phba->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
 410                 spin_unlock_irq(phba->host->host_lock);
 411         }
 412         spin_lock_irq(phba->host->host_lock);
 413         phba->fc_flag &= ~FC_LBIT;
 414         spin_unlock_irq(phba->host->host_lock);
 415
 416         /* Turn off discovery timer if its running */
 417         lpfc_can_disctmo(phba);
 418
 419         /* Must process IOCBs on all rings to handle ABORTed I/Os */
 420         return 0;
 421 }
 422
 423 static int
 424 lpfc_linkup(struct lpfc_hba * phba)
 425 {
 426         struct lpfc_nodelist *ndlp, *next_ndlp;
 427         struct list_head *listp, *node_list[7];
 428         int i;
 429
 430         spin_lock_irq(phba->host->host_lock);
 431         phba->hba_state = LPFC_LINK_UP;
 432         phba->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
 433                            FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
 434         phba->fc_flag |= FC_NDISC_ACTIVE;
 435         phba->fc_ns_retry = 0;
 436         spin_unlock_irq(phba->host->host_lock);
 437
 438
 439         node_list[0] = &phba->fc_plogi_list;
 440         node_list[1] = &phba->fc_adisc_list;
 441         node_list[2] = &phba->fc_reglogin_list;
 442         node_list[3] = &phba->fc_prli_list;
 443         node_list[4] = &phba->fc_nlpunmap_list;
 444         node_list[5] = &phba->fc_nlpmap_list;
 445         node_list[6] = &phba->fc_npr_list;
 446         for (i = 0; i < 7; i++) {
 447                 listp = node_list[i];
 448                 if (list_empty(listp))
 449                         continue;
 450
 451                 list_for_each_entry_safe(ndlp, next_ndlp, listp, nlp_listp) {
 452                         if (phba->fc_flag & FC_LBIT) {
 453                                 if (ndlp->nlp_type & NLP_FABRIC) {
 454                                         /* On Linkup its safe to clean up the
 455                                          * ndlp from Fabric connections.
 456                                          */
 457                                         lpfc_nlp_list(phba, ndlp,
 458                                                         NLP_UNUSED_LIST);
 459                                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
 460                                         /* Fail outstanding IO now since device
 461                                          * is marked for PLOGI.
 462                                          */
 463                                         lpfc_unreg_rpi(phba, ndlp);
 464                                 }
 465                         }
 466                 }
 467         }
 468
 469         /* free any ndlp's on unused list */
 470         list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_unused_list,
 471                                 nlp_listp) {
 472                 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
 473         }
 474
 475         return 0;
 476 }
 477
 478 /*
 479  * This routine handles processing a CLEAR_LA mailbox
 480  * command upon completion. It is setup in the LPFC_MBOXQ
 481  * as the completion routine when the command is
 482  * handed off to the SLI layer.
 483  */
 484 void
 485 lpfc_mbx_cmpl_clear_la(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
 486 {
 487         struct lpfc_sli *psli;
 488         MAILBOX_t *mb;
 489         uint32_t control;
 490
 491         psli = &phba->sli;
 492         mb = &pmb->mb;
 493         /* Since we don't do discovery right now, turn these off here */
 494         psli->ring[psli->ip_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 495         psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 496         psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 497
 498         /* Check for error */
 499         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
 500                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
 501                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
 502                                 "%d:0320 CLEAR_LA mbxStatus error x%x hba "
 503                                 "state x%x\n",
 504                                 phba->brd_no, mb->mbxStatus, phba->hba_state);
 505
 506                 phba->hba_state = LPFC_HBA_ERROR;
 507                 goto out;
 508         }
 509
 510         if (phba->fc_flag & FC_ABORT_DISCOVERY)
 511                 goto out;
 512
 513         phba->num_disc_nodes = 0;
 514         /* go thru NPR list and issue ELS PLOGIs */
 515         if (phba->fc_npr_cnt) {
 516                 lpfc_els_disc_plogi(phba);
 517         }
 518
 519         if (!phba->num_disc_nodes) {
 520                 spin_lock_irq(phba->host->host_lock);
 521                 phba->fc_flag &= ~FC_NDISC_ACTIVE;
 522                 spin_unlock_irq(phba->host->host_lock);
 523         }
 524
 525         phba->hba_state = LPFC_HBA_READY;
 526
 527 out:
 528         /* Device Discovery completes */
 529         lpfc_printf_log(phba,
 530                          KERN_INFO,
 531                          LOG_DISCOVERY,
 532                          "%d:0225 Device Discovery completes\n",
 533                          phba->brd_no);
 534
 535         mempool_free( pmb, phba->mbox_mem_pool);
 536
 537         spin_lock_irq(phba->host->host_lock);
 538         phba->fc_flag &= ~FC_ABORT_DISCOVERY;
 539         if (phba->fc_flag & FC_ESTABLISH_LINK) {
 540                 phba->fc_flag &= ~FC_ESTABLISH_LINK;
 541         }
 542         spin_unlock_irq(phba->host->host_lock);
 543
 544         del_timer_sync(&phba->fc_estabtmo);
 545
 546         lpfc_can_disctmo(phba);
 547
 548         /* turn on Link Attention interrupts */
 549         spin_lock_irq(phba->host->host_lock);
 550         psli->sli_flag |= LPFC_PROCESS_LA;
 551         control = readl(phba->HCregaddr);
 552         control |= HC_LAINT_ENA;
 553         writel(control, phba->HCregaddr);
 554         readl(phba->HCregaddr); /* flush */
 555         spin_unlock_irq(phba->host->host_lock);
 556
 557         return;
 558 }
 559
 560 static void
 561 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 562 {
 563         struct lpfc_sli *psli = &phba->sli;
 564         int rc;
 565
 566         if (pmb->mb.mbxStatus)
 567                 goto out;
 568
 569         mempool_free(pmb, phba->mbox_mem_pool);
 570
 571         if (phba->fc_topology == TOPOLOGY_LOOP &&
 572                 phba->fc_flag & FC_PUBLIC_LOOP &&
 573                  !(phba->fc_flag & FC_LBIT)) {
 574                         /* Need to wait for FAN - use discovery timer
 575                          * for timeout.  hba_state is identically
 576                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
 577                          */
 578                         lpfc_set_disctmo(phba);
 579                         return;
 580                 }
 581
 582         /* Start discovery by sending a FLOGI. hba_state is identically
 583          * LPFC_FLOGI while waiting for FLOGI cmpl
 584          */
 585         phba->hba_state = LPFC_FLOGI;
 586         lpfc_set_disctmo(phba);
 587         lpfc_initial_flogi(phba);
 588         return;
 589
 590 out:
 591         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
 592                         "%d:0306 CONFIG_LINK mbxStatus error x%x "
 593                         "HBA state x%x\n",
 594                         phba->brd_no, pmb->mb.mbxStatus, phba->hba_state);
 595
 596         lpfc_linkdown(phba);
 597
 598         phba->hba_state = LPFC_HBA_ERROR;
 599
 600         lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
 601                         "%d:0200 CONFIG_LINK bad hba state x%x\n",
 602                         phba->brd_no, phba->hba_state);
 603
 604         lpfc_clear_la(phba, pmb);
 605         pmb->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
 606         rc = lpfc_sli_issue_mbox(phba, pmb, (MBX_NOWAIT | MBX_STOP_IOCB));
 607         if (rc == MBX_NOT_FINISHED) {
 608                 mempool_free(pmb, phba->mbox_mem_pool);
 609                 lpfc_disc_flush_list(phba);
 610                 psli->ring[(psli->ip_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
 611                 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
 612                 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
 613                 phba->hba_state = LPFC_HBA_READY;
 614         }
 615         return;
 616 }
 617
 618 static void
 619 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
 620 {
 621         struct lpfc_sli *psli = &phba->sli;
 622         MAILBOX_t *mb = &pmb->mb;
 623         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
 624
 625
 626         /* Check for error */
 627         if (mb->mbxStatus) {
 628                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
 629                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
 630                                 "%d:0319 READ_SPARAM mbxStatus error x%x "
 631                                 "hba state x%x>\n",
 632                                 phba->brd_no, mb->mbxStatus, phba->hba_state);
 633
 634                 lpfc_linkdown(phba);
 635                 phba->hba_state = LPFC_HBA_ERROR;
 636                 goto out;
 637         }
 638
 639         memcpy((uint8_t *) & phba->fc_sparam, (uint8_t *) mp->virt,
 640                sizeof (struct serv_parm));
 641         memcpy((uint8_t *) & phba->fc_nodename,
 642                (uint8_t *) & phba->fc_sparam.nodeName,
 643                sizeof (struct lpfc_name));
 644         memcpy((uint8_t *) & phba->fc_portname,
 645                (uint8_t *) & phba->fc_sparam.portName,
 646                sizeof (struct lpfc_name));
 647         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 648         kfree(mp);
 649         mempool_free( pmb, phba->mbox_mem_pool);
 650         return;
 651
 652 out:
 653         pmb->context1 = NULL;
 654         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 655         kfree(mp);
 656         if (phba->hba_state != LPFC_CLEAR_LA) {
 657                 lpfc_clear_la(phba, pmb);
 658                 pmb->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
 659                 if (lpfc_sli_issue_mbox(phba, pmb, (MBX_NOWAIT | MBX_STOP_IOCB))
 660                     == MBX_NOT_FINISHED) {
 661                         mempool_free( pmb, phba->mbox_mem_pool);
 662                         lpfc_disc_flush_list(phba);
 663                         psli->ring[(psli->ip_ring)].flag &=
 664                             ~LPFC_STOP_IOCB_EVENT;
 665                         psli->ring[(psli->fcp_ring)].flag &=
 666                             ~LPFC_STOP_IOCB_EVENT;
 667                         psli->ring[(psli->next_ring)].flag &=
 668                             ~LPFC_STOP_IOCB_EVENT;
 669                         phba->hba_state = LPFC_HBA_READY;
 670                 }
 671         } else {
 672                 mempool_free( pmb, phba->mbox_mem_pool);
 673         }
 674         return;
 675 }
 676
 677 static void
 678 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
 679 {
 680         int i;
 681         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox;
 682         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 683         cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 684
 685         spin_lock_irq(phba->host->host_lock);
 686         switch (la->UlnkSpeed) {
 687                 case LA_1GHZ_LINK:
 688                         phba->fc_linkspeed = LA_1GHZ_LINK;
 689                         break;
 690                 case LA_2GHZ_LINK:
 691                         phba->fc_linkspeed = LA_2GHZ_LINK;
 692                         break;
 693                 case LA_4GHZ_LINK:
 694                         phba->fc_linkspeed = LA_4GHZ_LINK;
 695                         break;
 696                 default:
 697                         phba->fc_linkspeed = LA_UNKNW_LINK;
 698                         break;
 699         }
 700
 701         phba->fc_topology = la->topology;
 702
 703         if (phba->fc_topology == TOPOLOGY_LOOP) {
 704         /* Get Loop Map information */
 705
 706                 if (la->il)
 707                         phba->fc_flag |= FC_LBIT;
 708
 709                 phba->fc_myDID = la->granted_AL_PA;
 710                 i = la->un.lilpBde64.tus.f.bdeSize;
 711
 712                 if (i == 0) {
 713                         phba->alpa_map[0] = 0;
 714                 } else {
 715                         if (phba->cfg_log_verbose & LOG_LINK_EVENT) {
 716                                 int numalpa, j, k;
 717                                 union {
 718                                         uint8_t pamap[16];
 719                                         struct {
 720                                                 uint32_t wd1;
 721                                                 uint32_t wd2;
 722                                                 uint32_t wd3;
 723                                                 uint32_t wd4;
 724                                         } pa;
 725                                 } un;
 726                                 numalpa = phba->alpa_map[0];
 727                                 j = 0;
 728                                 while (j < numalpa) {
 729                                         memset(un.pamap, 0, 16);
 730                                         for (k = 1; j < numalpa; k++) {
 731                                                 un.pamap[k - 1] =
 732                                                         phba->alpa_map[j + 1];
 733                                                 j++;
 734                                                 if (k == 16)
 735                                                         break;
 736                                         }
 737                                         /* Link Up Event ALPA map */
 738                                         lpfc_printf_log(phba,
 739                                                 KERN_WARNING,
 740                                                 LOG_LINK_EVENT,
 741                                                 "%d:1304 Link Up Event "
 742                                                 "ALPA map Data: x%x "
 743                                                 "x%x x%x x%x\n",
 744                                                 phba->brd_no,
 745                                                 un.pa.wd1, un.pa.wd2,
 746                                                 un.pa.wd3, un.pa.wd4);
 747                                 }
 748                         }
 749                 }
 750         } else {
 751                 phba->fc_myDID = phba->fc_pref_DID;
 752                 phba->fc_flag |= FC_LBIT;
 753         }
 754         spin_unlock_irq(phba->host->host_lock);
 755
 756         lpfc_linkup(phba);
 757         if (sparam_mbox) {
 758                 lpfc_read_sparam(phba, sparam_mbox);
 759                 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
 760                 lpfc_sli_issue_mbox(phba, sparam_mbox,
 761                                                 (MBX_NOWAIT | MBX_STOP_IOCB));
 762         }
 763
 764         if (cfglink_mbox) {
 765                 phba->hba_state = LPFC_LOCAL_CFG_LINK;
 766                 lpfc_config_link(phba, cfglink_mbox);
 767                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
 768                 lpfc_sli_issue_mbox(phba, cfglink_mbox,
 769                                                 (MBX_NOWAIT | MBX_STOP_IOCB));
 770         }
 771 }
 772
 773 static void
 774 lpfc_mbx_issue_link_down(struct lpfc_hba *phba) {
 775         uint32_t control;
 776         struct lpfc_sli *psli = &phba->sli;
 777
 778         lpfc_linkdown(phba);
 779
 780         /* turn on Link Attention interrupts - no CLEAR_LA needed */
 781         spin_lock_irq(phba->host->host_lock);
 782         psli->sli_flag |= LPFC_PROCESS_LA;
 783         control = readl(phba->HCregaddr);
 784         control |= HC_LAINT_ENA;
 785         writel(control, phba->HCregaddr);
 786         readl(phba->HCregaddr); /* flush */
 787         spin_unlock_irq(phba->host->host_lock);
 788 }
 789
 790 /*
 791  * This routine handles processing a READ_LA mailbox
 792  * command upon completion. It is setup in the LPFC_MBOXQ
 793  * as the completion routine when the command is
 794  * handed off to the SLI layer.
 795  */
 796 void
 797 lpfc_mbx_cmpl_read_la(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
 798 {
 799         READ_LA_VAR *la;
 800         MAILBOX_t *mb = &pmb->mb;
 801         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
 802
 803         /* Check for error */
 804         if (mb->mbxStatus) {
 805                 lpfc_printf_log(phba,
 806                                 KERN_INFO,
 807                                 LOG_LINK_EVENT,
 808                                 "%d:1307 READ_LA mbox error x%x state x%x\n",
 809                                 phba->brd_no,
 810                                 mb->mbxStatus, phba->hba_state);
 811                 lpfc_mbx_issue_link_down(phba);
 812                 phba->hba_state = LPFC_HBA_ERROR;
 813                 goto lpfc_mbx_cmpl_read_la_free_mbuf;
 814         }
 815
 816         la = (READ_LA_VAR *) & pmb->mb.un.varReadLA;
 817
 818         memcpy(&phba->alpa_map[0], mp->virt, 128);
 819
 820         spin_lock_irq(phba->host->host_lock);
 821         if (la->pb)
 822                 phba->fc_flag |= FC_BYPASSED_MODE;
 823         else
 824                 phba->fc_flag &= ~FC_BYPASSED_MODE;
 825         spin_unlock_irq(phba->host->host_lock);
 826
 827         if (((phba->fc_eventTag + 1) < la->eventTag) ||
 828              (phba->fc_eventTag == la->eventTag)) {
 829                 phba->fc_stat.LinkMultiEvent++;
 830                 if (la->attType == AT_LINK_UP) {
 831                         if (phba->fc_eventTag != 0)
 832                                 lpfc_linkdown(phba);
 833                 }
 834         }
 835
 836         phba->fc_eventTag = la->eventTag;
 837
 838         if (la->attType == AT_LINK_UP) {
 839                 phba->fc_stat.LinkUp++;
 840                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
 841                                 "%d:1303 Link Up Event x%x received "
 842                                 "Data: x%x x%x x%x x%x\n",
 843                                 phba->brd_no, la->eventTag, phba->fc_eventTag,
 844                                 la->granted_AL_PA, la->UlnkSpeed,
 845                                 phba->alpa_map[0]);
 846                 lpfc_mbx_process_link_up(phba, la);
 847         } else {
 848                 phba->fc_stat.LinkDown++;
 849                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
 850                                 "%d:1305 Link Down Event x%x received "
 851                                 "Data: x%x x%x x%x\n",
 852                                 phba->brd_no, la->eventTag, phba->fc_eventTag,
 853                                 phba->hba_state, phba->fc_flag);
 854                 lpfc_mbx_issue_link_down(phba);
 855         }
 856
 857 lpfc_mbx_cmpl_read_la_free_mbuf:
 858         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 859         kfree(mp);
 860         mempool_free(pmb, phba->mbox_mem_pool);
 861         return;
 862 }
 863
 864 /*
 865  * This routine handles processing a REG_LOGIN mailbox
 866  * command upon completion. It is setup in the LPFC_MBOXQ
 867  * as the completion routine when the command is
 868  * handed off to the SLI layer.
 869  */
 870 void
 871 lpfc_mbx_cmpl_reg_login(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
 872 {
 873         struct lpfc_sli *psli;
 874         MAILBOX_t *mb;
 875         struct lpfc_dmabuf *mp;
 876         struct lpfc_nodelist *ndlp;
 877
 878         psli = &phba->sli;
 879         mb = &pmb->mb;
 880
 881         ndlp = (struct lpfc_nodelist *) pmb->context2;
 882         mp = (struct lpfc_dmabuf *) (pmb->context1);
 883
 884         pmb->context1 = NULL;
 885
 886         /* Good status, call state machine */
 887         lpfc_disc_state_machine(phba, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
 888         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 889         kfree(mp);
 890         mempool_free( pmb, phba->mbox_mem_pool);
 891
 892         return;
 893 }
 894
 895 /*
 896  * This routine handles processing a Fabric REG_LOGIN mailbox
 897  * command upon completion. It is setup in the LPFC_MBOXQ
 898  * as the completion routine when the command is
 899  * handed off to the SLI layer.
 900  */
 901 void
 902 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
 903 {
 904         struct lpfc_sli *psli;
 905         MAILBOX_t *mb;
 906         struct lpfc_dmabuf *mp;
 907         struct lpfc_nodelist *ndlp;
 908         struct lpfc_nodelist *ndlp_fdmi;
 909
 910
 911         psli = &phba->sli;
 912         mb = &pmb->mb;
 913
 914         ndlp = (struct lpfc_nodelist *) pmb->context2;
 915         mp = (struct lpfc_dmabuf *) (pmb->context1);
 916
 917         if (mb->mbxStatus) {
 918                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
 919                 kfree(mp);
 920                 mempool_free( pmb, phba->mbox_mem_pool);
 921                 mempool_free( ndlp, phba->nlp_mem_pool);
 922
 923                 /* FLOGI failed, so just use loop map to make discovery list */
 924                 lpfc_disc_list_loopmap(phba);
 925
 926                 /* Start discovery */
 927                 lpfc_disc_start(phba);
 928                 return;
 929         }
 930
 931         pmb->context1 = NULL;
 932
 933         ndlp->nlp_rpi = mb->un.varWords[0];
 934         ndlp->nlp_type |= NLP_FABRIC;
 935         ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
 936         lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
 937
 938         if (phba->hba_state == LPFC_FABRIC_CFG_LINK) {
 939                 /* This NPort has been assigned an NPort_ID by the fabric as a
 940                  * result of the completed fabric login.  Issue a State Change
 941                  * Registration (SCR) ELS request to the fabric controller
 942                  * (SCR_DID) so that this NPort gets RSCN events from the
 943                  * fabric.
 944                  */
 945                 lpfc_issue_els_scr(phba, SCR_DID, 0);
 946
 947                 ndlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, NameServer_DID);
 948                 if (!ndlp) {
 949                         /* Allocate a new node instance. If the pool is empty,
 950                          * start the discovery process and skip the Nameserver
 951                          * login process.  This is attempted again later on.
 952                          * Otherwise, issue a Port Login (PLOGI) to NameServer.
 953                          */
 954                         ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_ATOMIC);
 955                         if (!ndlp) {
 956                                 lpfc_disc_start(phba);
 957                                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
 958                                 kfree(mp);
 959                                 mempool_free( pmb, phba->mbox_mem_pool);
 960                                 return;
 961                         } else {
 962                                 lpfc_nlp_init(phba, ndlp, NameServer_DID);
 963                                 ndlp->nlp_type |= NLP_FABRIC;
 964                         }
 965                 }
 966                 ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
 967                 lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
 968                 lpfc_issue_els_plogi(phba, NameServer_DID, 0);
 969                 if (phba->cfg_fdmi_on) {
 970                         ndlp_fdmi = mempool_alloc(phba->nlp_mem_pool,
 971                                                                 GFP_KERNEL);
 972                         if (ndlp_fdmi) {
 973                                 lpfc_nlp_init(phba, ndlp_fdmi, FDMI_DID);
 974                                 ndlp_fdmi->nlp_type |= NLP_FABRIC;
 975                                 ndlp_fdmi->nlp_state = NLP_STE_PLOGI_ISSUE;
 976                                 lpfc_issue_els_plogi(phba, FDMI_DID, 0);
 977                         }
 978                 }
 979         }
 980
 981         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 982         kfree(mp);
 983         mempool_free( pmb, phba->mbox_mem_pool);
 984         return;
 985 }
 986
 987 /*
 988  * This routine handles processing a NameServer REG_LOGIN mailbox
 989  * command upon completion. It is setup in the LPFC_MBOXQ
 990  * as the completion routine when the command is
 991  * handed off to the SLI layer.
 992  */
 993 void
 994 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
 995 {
 996         struct lpfc_sli *psli;
 997         MAILBOX_t *mb;
 998         struct lpfc_dmabuf *mp;
 999         struct lpfc_nodelist *ndlp;
1000
1001         psli = &phba->sli;
1002         mb = &pmb->mb;
1003
1004         ndlp = (struct lpfc_nodelist *) pmb->context2;
1005         mp = (struct lpfc_dmabuf *) (pmb->context1);
1006
1007         if (mb->mbxStatus) {
1008                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1009                 kfree(mp);
1010                 mempool_free( pmb, phba->mbox_mem_pool);
1011                 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1012
1013                 /* RegLogin failed, so just use loop map to make discovery
1014                    list */
1015                 lpfc_disc_list_loopmap(phba);
1016
1017                 /* Start discovery */
1018                 lpfc_disc_start(phba);
1019                 return;
1020         }
1021
1022         pmb->context1 = NULL;
1023
1024         ndlp->nlp_rpi = mb->un.varWords[0];
1025         ndlp->nlp_type |= NLP_FABRIC;
1026         ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1027         lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
1028
1029         if (phba->hba_state < LPFC_HBA_READY) {
1030                 /* Link up discovery requires Fabrib registration. */
1031                 lpfc_ns_cmd(phba, ndlp, SLI_CTNS_RNN_ID);
1032                 lpfc_ns_cmd(phba, ndlp, SLI_CTNS_RSNN_NN);
1033                 lpfc_ns_cmd(phba, ndlp, SLI_CTNS_RFT_ID);
1034         }
1035
1036         phba->fc_ns_retry = 0;
1037         /* Good status, issue CT Request to NameServer */
1038         if (lpfc_ns_cmd(phba, ndlp, SLI_CTNS_GID_FT)) {
1039                 /* Cannot issue NameServer Query, so finish up discovery */
1040                 lpfc_disc_start(phba);
1041         }
1042
1043         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1044         kfree(mp);
1045         mempool_free( pmb, phba->mbox_mem_pool);
1046
1047         return;
1048 }
1049
1050 static void
1051 lpfc_register_remote_port(struct lpfc_hba * phba,
1052                             struct lpfc_nodelist * ndlp)
1053 {
1054         struct fc_rport *rport;
1055         struct lpfc_rport_data *rdata;
1056         struct fc_rport_identifiers rport_ids;
1057
1058         /* Remote port has reappeared. Re-register w/ FC transport */
1059         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
1060         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
1061         rport_ids.port_id = ndlp->nlp_DID;
1062         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1063
1064         ndlp->rport = rport = fc_remote_port_add(phba->host, 0, &rport_ids);
1065         if (!rport) {
1066                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
1067                            "Warning: fc_remote_port_add failed\n");
1068                 return;
1069         }
1070
1071         /* initialize static port data */
1072         rport->maxframe_size = ndlp->nlp_maxframe;
1073         rport->supported_classes = ndlp->nlp_class_sup;
1074         rdata = rport->dd_data;
1075         rdata->pnode = ndlp;
1076
1077         if (ndlp->nlp_type & NLP_FCP_TARGET)
1078                 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1079         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
1080                 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
1081
1082
1083         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
1084                 fc_remote_port_rolechg(rport, rport_ids.roles);
1085
1086         if ((rport->scsi_target_id != -1) &&
1087                 (rport->scsi_target_id < LPFC_MAX_TARGET)) {
1088                 ndlp->nlp_sid = rport->scsi_target_id;
1089         }
1090
1091         return;
1092 }
1093
1094 static void
1095 lpfc_unregister_remote_port(struct lpfc_hba * phba,
1096                             struct lpfc_nodelist * ndlp)
1097 {
1098         struct fc_rport *rport = ndlp->rport;
1099         struct lpfc_rport_data *rdata = rport->dd_data;
1100
1101         ndlp->rport = NULL;
1102         rdata->pnode = NULL;
1103         fc_remote_port_delete(rport);
1104
1105         return;
1106 }
1107
1108 int
1109 lpfc_nlp_list(struct lpfc_hba * phba, struct lpfc_nodelist * nlp, int list)
1110 {
1111         enum { none, unmapped, mapped } rport_add = none, rport_del = none;
1112         struct lpfc_sli      *psli;
1113
1114         psli = &phba->sli;
1115         /* Sanity check to ensure we are not moving to / from the same list */
1116         if ((nlp->nlp_flag & NLP_LIST_MASK) == list)
1117                 if (list != NLP_NO_LIST)
1118                         return 0;
1119
1120         spin_lock_irq(phba->host->host_lock);
1121         switch (nlp->nlp_flag & NLP_LIST_MASK) {
1122         case NLP_NO_LIST: /* Not on any list */
1123                 break;
1124         case NLP_UNUSED_LIST:
1125                 phba->fc_unused_cnt--;
1126                 list_del(&nlp->nlp_listp);
1127                 break;
1128         case NLP_PLOGI_LIST:
1129                 phba->fc_plogi_cnt--;
1130                 list_del(&nlp->nlp_listp);
1131                 break;
1132         case NLP_ADISC_LIST:
1133                 phba->fc_adisc_cnt--;
1134                 list_del(&nlp->nlp_listp);
1135                 break;
1136         case NLP_REGLOGIN_LIST:
1137                 phba->fc_reglogin_cnt--;
1138                 list_del(&nlp->nlp_listp);
1139                 break;
1140         case NLP_PRLI_LIST:
1141                 phba->fc_prli_cnt--;
1142                 list_del(&nlp->nlp_listp);
1143                 break;
1144         case NLP_UNMAPPED_LIST:
1145                 phba->fc_unmap_cnt--;
1146                 list_del(&nlp->nlp_listp);
1147                 nlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
1148                 nlp->nlp_type &= ~NLP_FC_NODE;
1149                 phba->nport_event_cnt++;
1150                 if (nlp->rport)
1151                         rport_del = unmapped;
1152                 break;
1153         case NLP_MAPPED_LIST:
1154                 phba->fc_map_cnt--;
1155                 list_del(&nlp->nlp_listp);
1156                 phba->nport_event_cnt++;
1157                 if (nlp->rport)
1158                         rport_del = mapped;
1159                 break;
1160         case NLP_NPR_LIST:
1161                 phba->fc_npr_cnt--;
1162                 list_del(&nlp->nlp_listp);
1163                 /* Stop delay tmo if taking node off NPR list */
1164                 if ((nlp->nlp_flag & NLP_DELAY_TMO) &&
1165                    (list != NLP_NPR_LIST)) {
1166                         spin_unlock_irq(phba->host->host_lock);
1167                         lpfc_cancel_retry_delay_tmo(phba, nlp);
1168                         spin_lock_irq(phba->host->host_lock);
1169                 }
1170                 break;
1171         }
1172
1173         nlp->nlp_flag &= ~NLP_LIST_MASK;
1174
1175         /* Add NPort <did> to <num> list */
1176         lpfc_printf_log(phba,
1177                         KERN_INFO,
1178                         LOG_NODE,
1179                         "%d:0904 Add NPort x%x to %d list Data: x%x\n",
1180                         phba->brd_no,
1181                         nlp->nlp_DID, list, nlp->nlp_flag);
1182
1183         switch (list) {
1184         case NLP_NO_LIST: /* No list, just remove it */
1185                 spin_unlock_irq(phba->host->host_lock);
1186                 lpfc_nlp_remove(phba, nlp);
1187                 spin_lock_irq(phba->host->host_lock);
1188                 /* as node removed - stop further transport calls */
1189                 rport_del = none;
1190                 break;
1191         case NLP_UNUSED_LIST:
1192                 nlp->nlp_flag |= list;
1193                 /* Put it at the end of the unused list */
1194                 list_add_tail(&nlp->nlp_listp, &phba->fc_unused_list);
1195                 phba->fc_unused_cnt++;
1196                 break;
1197         case NLP_PLOGI_LIST:
1198                 nlp->nlp_flag |= list;
1199                 /* Put it at the end of the plogi list */
1200                 list_add_tail(&nlp->nlp_listp, &phba->fc_plogi_list);
1201                 phba->fc_plogi_cnt++;
1202                 break;
1203         case NLP_ADISC_LIST:
1204                 nlp->nlp_flag |= list;
1205                 /* Put it at the end of the adisc list */
1206                 list_add_tail(&nlp->nlp_listp, &phba->fc_adisc_list);
1207                 phba->fc_adisc_cnt++;
1208                 break;
1209         case NLP_REGLOGIN_LIST:
1210                 nlp->nlp_flag |= list;
1211                 /* Put it at the end of the reglogin list */
1212                 list_add_tail(&nlp->nlp_listp, &phba->fc_reglogin_list);
1213                 phba->fc_reglogin_cnt++;
1214                 break;
1215         case NLP_PRLI_LIST:
1216                 nlp->nlp_flag |= list;
1217                 /* Put it at the end of the prli list */
1218                 list_add_tail(&nlp->nlp_listp, &phba->fc_prli_list);
1219                 phba->fc_prli_cnt++;
1220                 break;
1221         case NLP_UNMAPPED_LIST:
1222                 rport_add = unmapped;
1223                 /* ensure all vestiges of "mapped" significance are gone */
1224                 nlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1225                 nlp->nlp_flag |= list;
1226                 /* Put it at the end of the unmap list */
1227                 list_add_tail(&nlp->nlp_listp, &phba->fc_nlpunmap_list);
1228                 phba->fc_unmap_cnt++;
1229                 phba->nport_event_cnt++;
1230                 /* stop nodev tmo if running */
1231                 if (nlp->nlp_flag & NLP_NODEV_TMO) {
1232                         nlp->nlp_flag &= ~NLP_NODEV_TMO;
1233                         spin_unlock_irq(phba->host->host_lock);
1234                         del_timer_sync(&nlp->nlp_tmofunc);
1235                         spin_lock_irq(phba->host->host_lock);
1236                         if (!list_empty(&nlp->nodev_timeout_evt.evt_listp))
1237                                 list_del_init(&nlp->nodev_timeout_evt.
1238                                                 evt_listp);
1239
1240                 }
1241                 nlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1242                 nlp->nlp_type |= NLP_FC_NODE;
1243                 break;
1244         case NLP_MAPPED_LIST:
1245                 rport_add = mapped;
1246                 nlp->nlp_flag |= list;
1247                 /* Put it at the end of the map list */
1248                 list_add_tail(&nlp->nlp_listp, &phba->fc_nlpmap_list);
1249                 phba->fc_map_cnt++;
1250                 phba->nport_event_cnt++;
1251                 /* stop nodev tmo if running */
1252                 if (nlp->nlp_flag & NLP_NODEV_TMO) {
1253                         nlp->nlp_flag &= ~NLP_NODEV_TMO;
1254                         spin_unlock_irq(phba->host->host_lock);
1255                         del_timer_sync(&nlp->nlp_tmofunc);
1256                         spin_lock_irq(phba->host->host_lock);
1257                         if (!list_empty(&nlp->nodev_timeout_evt.evt_listp))
1258                                 list_del_init(&nlp->nodev_timeout_evt.
1259                                                 evt_listp);
1260
1261                 }
1262                 nlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1263                 break;
1264         case NLP_NPR_LIST:
1265                 nlp->nlp_flag |= list;
1266                 /* Put it at the end of the npr list */
1267                 list_add_tail(&nlp->nlp_listp, &phba->fc_npr_list);
1268                 phba->fc_npr_cnt++;
1269
1270                 if (!(nlp->nlp_flag & NLP_NODEV_TMO))
1271                         mod_timer(&nlp->nlp_tmofunc,
1272                                         jiffies + HZ * phba->cfg_nodev_tmo);
1273
1274                 nlp->nlp_flag |= NLP_NODEV_TMO;
1275                 nlp->nlp_flag &= ~NLP_RCV_PLOGI;
1276                 break;
1277         case NLP_JUST_DQ:
1278                 break;
1279         }
1280
1281         spin_unlock_irq(phba->host->host_lock);
1282
1283         /*
1284          * We make all the calls into the transport after we have
1285          * moved the node between lists. This so that we don't
1286          * release the lock while in-between lists.
1287          */
1288
1289         /* Don't upcall midlayer if we're unloading */
1290         if (!(phba->fc_flag & FC_UNLOADING)) {
1291                 /*
1292                  * We revalidate the rport pointer as the "add" function
1293                  * may have removed the remote port.
1294                  */
1295                 if ((rport_del != none) && nlp->rport)
1296                         lpfc_unregister_remote_port(phba, nlp);
1297
1298                 if (rport_add != none) {
1299                         /*
1300                          * Tell the fc transport about the port, if we haven't
1301                          * already. If we have, and it's a scsi entity, be
1302                          * sure to unblock any attached scsi devices
1303                          */
1304                         if (!nlp->rport)
1305                                 lpfc_register_remote_port(phba, nlp);
1306
1307                         /*
1308                          * if we added to Mapped list, but the remote port
1309                          * registration failed or assigned a target id outside
1310                          * our presentable range - move the node to the
1311                          * Unmapped List
1312                          */
1313                         if ((rport_add == mapped) &&
1314                             ((!nlp->rport) ||
1315                              (nlp->rport->scsi_target_id == -1) ||
1316                              (nlp->rport->scsi_target_id >= LPFC_MAX_TARGET))) {
1317                                 nlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1318                                 spin_lock_irq(phba->host->host_lock);
1319                                 nlp->nlp_flag |= NLP_TGT_NO_SCSIID;
1320                                 spin_unlock_irq(phba->host->host_lock);
1321                                 lpfc_nlp_list(phba, nlp, NLP_UNMAPPED_LIST);
1322                         }
1323                 }
1324         }
1325         return 0;
1326 }
1327
1328 /*
1329  * Start / ReStart rescue timer for Discovery / RSCN handling
1330  */
1331 void
1332 lpfc_set_disctmo(struct lpfc_hba * phba)
1333 {
1334         uint32_t tmo;
1335
1336         if (phba->hba_state == LPFC_LOCAL_CFG_LINK) {
1337                 /* For FAN, timeout should be greater then edtov */
1338                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
1339         } else {
1340                 /* Normal discovery timeout should be > then ELS/CT timeout
1341                  * FC spec states we need 3 * ratov for CT requests
1342                  */
1343                 tmo = ((phba->fc_ratov * 3) + 3);
1344         }
1345
1346         mod_timer(&phba->fc_disctmo, jiffies + HZ * tmo);
1347         spin_lock_irq(phba->host->host_lock);
1348         phba->fc_flag |= FC_DISC_TMO;
1349         spin_unlock_irq(phba->host->host_lock);
1350
1351         /* Start Discovery Timer state <hba_state> */
1352         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
1353                         "%d:0247 Start Discovery Timer state x%x "
1354                         "Data: x%x x%lx x%x x%x\n",
1355                         phba->brd_no,
1356                         phba->hba_state, tmo, (unsigned long)&phba->fc_disctmo,
1357                         phba->fc_plogi_cnt, phba->fc_adisc_cnt);
1358
1359         return;
1360 }
1361
1362 /*
1363  * Cancel rescue timer for Discovery / RSCN handling
1364  */
1365 int
1366 lpfc_can_disctmo(struct lpfc_hba * phba)
1367 {
1368         /* Turn off discovery timer if its running */
1369         if (phba->fc_flag & FC_DISC_TMO) {
1370                 spin_lock_irq(phba->host->host_lock);
1371                 phba->fc_flag &= ~FC_DISC_TMO;
1372                 spin_unlock_irq(phba->host->host_lock);
1373                 del_timer_sync(&phba->fc_disctmo);
1374                 phba->work_hba_events &= ~WORKER_DISC_TMO;
1375         }
1376
1377         /* Cancel Discovery Timer state <hba_state> */
1378         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
1379                         "%d:0248 Cancel Discovery Timer state x%x "
1380                         "Data: x%x x%x x%x\n",
1381                         phba->brd_no, phba->hba_state, phba->fc_flag,
1382                         phba->fc_plogi_cnt, phba->fc_adisc_cnt);
1383
1384         return 0;
1385 }
1386
1387 /*
1388  * Check specified ring for outstanding IOCB on the SLI queue
1389  * Return true if iocb matches the specified nport
1390  */
1391 int
1392 lpfc_check_sli_ndlp(struct lpfc_hba * phba,
1393                     struct lpfc_sli_ring * pring,
1394                     struct lpfc_iocbq * iocb, struct lpfc_nodelist * ndlp)
1395 {
1396         struct lpfc_sli *psli;
1397         IOCB_t *icmd;
1398
1399         psli = &phba->sli;
1400         icmd = &iocb->iocb;
1401         if (pring->ringno == LPFC_ELS_RING) {
1402                 switch (icmd->ulpCommand) {
1403                 case CMD_GEN_REQUEST64_CR:
1404                         if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi)
1405                                 return 1;
1406                 case CMD_ELS_REQUEST64_CR:
1407                         if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
1408                                 return 1;
1409                 case CMD_XMIT_ELS_RSP64_CX:
1410                         if (iocb->context1 == (uint8_t *) ndlp)
1411                                 return 1;
1412                 }
1413         } else if (pring->ringno == psli->ip_ring) {
1414
1415         } else if (pring->ringno == psli->fcp_ring) {
1416                 /* Skip match check if waiting to relogin to FCP target */
1417                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
1418                   (ndlp->nlp_flag & NLP_DELAY_TMO)) {
1419                         return 0;
1420                 }
1421                 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
1422                         return 1;
1423                 }
1424         } else if (pring->ringno == psli->next_ring) {
1425
1426         }
1427         return 0;
1428 }
1429
1430 /*
1431  * Free resources / clean up outstanding I/Os
1432  * associated with nlp_rpi in the LPFC_NODELIST entry.
1433  */
1434 static int
1435 lpfc_no_rpi(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp)
1436 {
1437         struct lpfc_sli *psli;
1438         struct lpfc_sli_ring *pring;
1439         struct lpfc_iocbq *iocb, *next_iocb;
1440         IOCB_t *icmd;
1441         uint32_t rpi, i;
1442
1443         /*
1444          * Everything that matches on txcmplq will be returned
1445          * by firmware with a no rpi error.
1446          */
1447         psli = &phba->sli;
1448         rpi = ndlp->nlp_rpi;
1449         if (rpi) {
1450                 /* Now process each ring */
1451                 for (i = 0; i < psli->num_rings; i++) {
1452                         pring = &psli->ring[i];
1453
1454                         spin_lock_irq(phba->host->host_lock);
1455                         list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
1456                                                 list) {
1457                                 /*
1458                                  * Check to see if iocb matches the nport we are
1459                                  * looking for
1460                                  */
1461                                 if ((lpfc_check_sli_ndlp
1462                                      (phba, pring, iocb, ndlp))) {
1463                                         /* It matches, so deque and call compl
1464                                            with an error */
1465                                         list_del(&iocb->list);
1466                                         pring->txq_cnt--;
1467                                         if (iocb->iocb_cmpl) {
1468                                                 icmd = &iocb->iocb;
1469                                                 icmd->ulpStatus =
1470                                                     IOSTAT_LOCAL_REJECT;
1471                                                 icmd->un.ulpWord[4] =
1472                                                     IOERR_SLI_ABORTED;
1473                                                 spin_unlock_irq(phba->host->
1474                                                                 host_lock);
1475                                                 (iocb->iocb_cmpl) (phba,
1476                                                                    iocb, iocb);
1477                                                 spin_lock_irq(phba->host->
1478                                                               host_lock);
1479                                         } else
1480                                                 lpfc_sli_release_iocbq(phba,
1481                                                                        iocb);
1482                                 }
1483                         }
1484                         spin_unlock_irq(phba->host->host_lock);
1485
1486                 }
1487         }
1488         return 0;
1489 }
1490
1491 /*
1492  * Free rpi associated with LPFC_NODELIST entry.
1493  * This routine is called from lpfc_freenode(), when we are removing
1494  * a LPFC_NODELIST entry. It is also called if the driver initiates a
1495  * LOGO that completes successfully, and we are waiting to PLOGI back
1496  * to the remote NPort. In addition, it is called after we receive
1497  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
1498  * we are waiting to PLOGI back to the remote NPort.
1499  */
1500 int
1501 lpfc_unreg_rpi(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp)
1502 {
1503         LPFC_MBOXQ_t *mbox;
1504         int rc;
1505
1506         if (ndlp->nlp_rpi) {
1507                 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))) {
1508                         lpfc_unreg_login(phba, ndlp->nlp_rpi, mbox);
1509                         mbox->mbox_cmpl=lpfc_sli_def_mbox_cmpl;
1510                         rc = lpfc_sli_issue_mbox
1511                                     (phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB));
1512                         if (rc == MBX_NOT_FINISHED)
1513                                 mempool_free( mbox, phba->mbox_mem_pool);
1514                 }
1515                 lpfc_no_rpi(phba, ndlp);
1516                 ndlp->nlp_rpi = 0;
1517                 return 1;
1518         }
1519         return 0;
1520 }
1521
1522 /*
1523  * Free resources associated with LPFC_NODELIST entry
1524  * so it can be freed.
1525  */
1526 static int
1527 lpfc_freenode(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp)
1528 {
1529         LPFC_MBOXQ_t       *mb;
1530         LPFC_MBOXQ_t       *nextmb;
1531         struct lpfc_dmabuf *mp;
1532
1533         /* Cleanup node for NPort <nlp_DID> */
1534         lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
1535                         "%d:0900 Cleanup node for NPort x%x "
1536                         "Data: x%x x%x x%x\n",
1537                         phba->brd_no, ndlp->nlp_DID, ndlp->nlp_flag,
1538                         ndlp->nlp_state, ndlp->nlp_rpi);
1539
1540         lpfc_nlp_list(phba, ndlp, NLP_JUST_DQ);
1541
1542         /*
1543          * if unloading the driver - just leave the remote port in place.
1544          * The driver unload will force the attached devices to detach
1545          * and flush cache's w/o generating flush errors.
1546          */
1547         if ((ndlp->rport) && !(phba->fc_flag & FC_UNLOADING)) {
1548                 lpfc_unregister_remote_port(phba, ndlp);
1549                 ndlp->nlp_sid = NLP_NO_SID;
1550         }
1551
1552         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1553         if ((mb = phba->sli.mbox_active)) {
1554                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1555                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1556                         mb->context2 = NULL;
1557                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1558                 }
1559         }
1560         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1561                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1562                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1563                         mp = (struct lpfc_dmabuf *) (mb->context1);
1564                         if (mp) {
1565                                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1566                                 kfree(mp);
1567                         }
1568                         list_del(&mb->list);
1569                         mempool_free(mb, phba->mbox_mem_pool);
1570                 }
1571         }
1572
1573         lpfc_els_abort(phba,ndlp,0);
1574         spin_lock_irq(phba->host->host_lock);
1575         ndlp->nlp_flag &= ~(NLP_NODEV_TMO|NLP_DELAY_TMO);
1576         spin_unlock_irq(phba->host->host_lock);
1577         del_timer_sync(&ndlp->nlp_tmofunc);
1578
1579         ndlp->nlp_last_elscmd = 0;
1580         del_timer_sync(&ndlp->nlp_delayfunc);
1581
1582         if (!list_empty(&ndlp->nodev_timeout_evt.evt_listp))
1583                 list_del_init(&ndlp->nodev_timeout_evt.evt_listp);
1584         if (!list_empty(&ndlp->els_retry_evt.evt_listp))
1585                 list_del_init(&ndlp->els_retry_evt.evt_listp);
1586
1587         lpfc_unreg_rpi(phba, ndlp);
1588
1589         return 0;
1590 }
1591
1592 /*
1593  * Check to see if we can free the nlp back to the freelist.
1594  * If we are in the middle of using the nlp in the discovery state
1595  * machine, defer the free till we reach the end of the state machine.
1596  */
1597 int
1598 lpfc_nlp_remove(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp)
1599 {
1600         if (ndlp->nlp_flag & NLP_NODEV_TMO) {
1601                 spin_lock_irq(phba->host->host_lock);
1602                 ndlp->nlp_flag &= ~NLP_NODEV_TMO;
1603                 spin_unlock_irq(phba->host->host_lock);
1604                 del_timer_sync(&ndlp->nlp_tmofunc);
1605                 if (!list_empty(&ndlp->nodev_timeout_evt.evt_listp))
1606                         list_del_init(&ndlp->nodev_timeout_evt.evt_listp);
1607
1608         }
1609
1610
1611         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
1612                 lpfc_cancel_retry_delay_tmo(phba, ndlp);
1613         }
1614
1615         if (ndlp->nlp_disc_refcnt) {
1616                 spin_lock_irq(phba->host->host_lock);
1617                 ndlp->nlp_flag |= NLP_DELAY_REMOVE;
1618                 spin_unlock_irq(phba->host->host_lock);
1619         } else {
1620                 lpfc_freenode(phba, ndlp);
1621                 mempool_free( ndlp, phba->nlp_mem_pool);
1622         }
1623         return 0;
1624 }
1625
1626 static int
1627 lpfc_matchdid(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp, uint32_t did)
1628 {
1629         D_ID mydid;
1630         D_ID ndlpdid;
1631         D_ID matchdid;
1632
1633         if (did == Bcast_DID)
1634                 return 0;
1635
1636         if (ndlp->nlp_DID == 0) {
1637                 return 0;
1638         }
1639
1640         /* First check for Direct match */
1641         if (ndlp->nlp_DID == did)
1642                 return 1;
1643
1644         /* Next check for area/domain identically equals 0 match */
1645         mydid.un.word = phba->fc_myDID;
1646         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
1647                 return 0;
1648         }
1649
1650         matchdid.un.word = did;
1651         ndlpdid.un.word = ndlp->nlp_DID;
1652         if (matchdid.un.b.id == ndlpdid.un.b.id) {
1653                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
1654                     (mydid.un.b.area == matchdid.un.b.area)) {
1655                         if ((ndlpdid.un.b.domain == 0) &&
1656                             (ndlpdid.un.b.area == 0)) {
1657                                 if (ndlpdid.un.b.id)
1658                                         return 1;
1659                         }
1660                         return 0;
1661                 }
1662
1663                 matchdid.un.word = ndlp->nlp_DID;
1664                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
1665                     (mydid.un.b.area == ndlpdid.un.b.area)) {
1666                         if ((matchdid.un.b.domain == 0) &&
1667                             (matchdid.un.b.area == 0)) {
1668                                 if (matchdid.un.b.id)
1669                                         return 1;
1670                         }
1671                 }
1672         }
1673         return 0;
1674 }
1675
1676 /* Search for a nodelist entry on a specific list */
1677 struct lpfc_nodelist *
1678 lpfc_findnode_did(struct lpfc_hba * phba, uint32_t order, uint32_t did)
1679 {
1680         struct lpfc_nodelist *ndlp, *next_ndlp;
1681         uint32_t data1;
1682
1683         spin_lock_irq(phba->host->host_lock);
1684         if (order & NLP_SEARCH_UNMAPPED) {
1685                 list_for_each_entry_safe(ndlp, next_ndlp,
1686                                          &phba->fc_nlpunmap_list, nlp_listp) {
1687                         if (lpfc_matchdid(phba, ndlp, did)) {
1688                                 data1 = (((uint32_t) ndlp->nlp_state << 24) |
1689                                          ((uint32_t) ndlp->nlp_xri << 16) |
1690                                          ((uint32_t) ndlp->nlp_type << 8) |
1691                                          ((uint32_t) ndlp->nlp_rpi & 0xff));
1692                                 /* FIND node DID unmapped */
1693                                 lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
1694                                                 "%d:0929 FIND node DID unmapped"
1695                                                 " Data: x%p x%x x%x x%x\n",
1696                                                 phba->brd_no,
1697                                                 ndlp, ndlp->nlp_DID,
1698                                                 ndlp->nlp_flag, data1);
1699                                 spin_unlock_irq(phba->host->host_lock);
1700                                 return ndlp;
1701                         }
1702                 }
1703         }
1704
1705         if (order & NLP_SEARCH_MAPPED) {
1706                 list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_nlpmap_list,
1707                                         nlp_listp) {
1708                         if (lpfc_matchdid(phba, ndlp, did)) {
1709
1710                                 data1 = (((uint32_t) ndlp->nlp_state << 24) |
1711                                          ((uint32_t) ndlp->nlp_xri << 16) |
1712                                          ((uint32_t) ndlp->nlp_type << 8) |
1713                                          ((uint32_t) ndlp->nlp_rpi & 0xff));
1714                                 /* FIND node DID mapped */
1715                                 lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
1716                                                 "%d:0930 FIND node DID mapped "
1717                                                 "Data: x%p x%x x%x x%x\n",
1718                                                 phba->brd_no,
1719                                                 ndlp, ndlp->nlp_DID,
1720                                                 ndlp->nlp_flag, data1);
1721                                 spin_unlock_irq(phba->host->host_lock);
1722                                 return ndlp;
1723                         }
1724                 }
1725         }
1726
1727         if (order & NLP_SEARCH_PLOGI) {
1728                 list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_plogi_list,
1729                                         nlp_listp) {
1730                         if (lpfc_matchdid(phba, ndlp, did)) {
1731
1732                                 data1 = (((uint32_t) ndlp->nlp_state << 24) |
1733                                          ((uint32_t) ndlp->nlp_xri << 16) |
1734                                          ((uint32_t) ndlp->nlp_type << 8) |
1735                                          ((uint32_t) ndlp->nlp_rpi & 0xff));
1736                                 /* LOG change to PLOGI */
1737                                 /* FIND node DID plogi */
1738                                 lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
1739                                                 "%d:0908 FIND node DID plogi "
1740                                                 "Data: x%p x%x x%x x%x\n",
1741                                                 phba->brd_no,
1742                                                 ndlp, ndlp->nlp_DID,
1743                                                 ndlp->nlp_flag, data1);
1744                                 spin_unlock_irq(phba->host->host_lock);
1745                                 return ndlp;
1746                         }
1747                 }
1748         }
1749
1750         if (order & NLP_SEARCH_ADISC) {
1751                 list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_adisc_list,
1752                                         nlp_listp) {
1753                         if (lpfc_matchdid(phba, ndlp, did)) {
1754
1755                                 data1 = (((uint32_t) ndlp->nlp_state << 24) |
1756                                          ((uint32_t) ndlp->nlp_xri << 16) |
1757                                          ((uint32_t) ndlp->nlp_type << 8) |
1758                                          ((uint32_t) ndlp->nlp_rpi & 0xff));
1759                                 /* LOG change to ADISC */
1760                                 /* FIND node DID adisc */
1761                                 lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
1762                                                 "%d:0931 FIND node DID adisc "
1763                                                 "Data: x%p x%x x%x x%x\n",
1764                                                 phba->brd_no,
1765                                                 ndlp, ndlp->nlp_DID,
1766                                                 ndlp->nlp_flag, data1);
1767                                 spin_unlock_irq(phba->host->host_lock);
1768                                 return ndlp;
1769                         }
1770                 }
1771         }
1772
1773         if (order & NLP_SEARCH_REGLOGIN) {
1774                 list_for_each_entry_safe(ndlp, next_ndlp,
1775                                          &phba->fc_reglogin_list, nlp_listp) {
1776                         if (lpfc_matchdid(phba, ndlp, did)) {
1777
1778                                 data1 = (((uint32_t) ndlp->nlp_state << 24) |
1779                                          ((uint32_t) ndlp->nlp_xri << 16) |
1780                                          ((uint32_t) ndlp->nlp_type << 8) |
1781                                          ((uint32_t) ndlp->nlp_rpi & 0xff));
1782                                 /* LOG change to REGLOGIN */
1783                                 /* FIND node DID reglogin */
1784                                 lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
1785                                                 "%d:0931 FIND node DID reglogin"
1786                                                 " Data: x%p x%x x%x x%x\n",
1787                                                 phba->brd_no,
1788                                                 ndlp, ndlp->nlp_DID,
1789                                                 ndlp->nlp_flag, data1);
1790                                 spin_unlock_irq(phba->host->host_lock);
1791                                 return ndlp;
1792                         }
1793                 }
1794         }
1795
1796         if (order & NLP_SEARCH_PRLI) {
1797                 list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_prli_list,
1798                                         nlp_listp) {
1799                         if (lpfc_matchdid(phba, ndlp, did)) {
1800
1801                                 data1 = (((uint32_t) ndlp->nlp_state << 24) |
1802                                          ((uint32_t) ndlp->nlp_xri << 16) |
1803                                          ((uint32_t) ndlp->nlp_type << 8) |
1804                                          ((uint32_t) ndlp->nlp_rpi & 0xff));
1805                                 /* LOG change to PRLI */
1806                                 /* FIND node DID prli */
1807                                 lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
1808                                                 "%d:0931 FIND node DID prli "
1809                                                 "Data: x%p x%x x%x x%x\n",
1810                                                 phba->brd_no,
1811                                                 ndlp, ndlp->nlp_DID,
1812                                                 ndlp->nlp_flag, data1);
1813                                 spin_unlock_irq(phba->host->host_lock);
1814                                 return ndlp;
1815                         }
1816                 }
1817         }
1818
1819         if (order & NLP_SEARCH_NPR) {
1820                 list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_npr_list,
1821                                         nlp_listp) {
1822                         if (lpfc_matchdid(phba, ndlp, did)) {
1823
1824                                 data1 = (((uint32_t) ndlp->nlp_state << 24) |
1825                                          ((uint32_t) ndlp->nlp_xri << 16) |
1826                                          ((uint32_t) ndlp->nlp_type << 8) |
1827                                          ((uint32_t) ndlp->nlp_rpi & 0xff));
1828                                 /* LOG change to NPR */
1829                                 /* FIND node DID npr */
1830                                 lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
1831                                                 "%d:0931 FIND node DID npr "
1832                                                 "Data: x%p x%x x%x x%x\n",
1833                                                 phba->brd_no,
1834                                                 ndlp, ndlp->nlp_DID,
1835                                                 ndlp->nlp_flag, data1);
1836                                 spin_unlock_irq(phba->host->host_lock);
1837                                 return ndlp;
1838                         }
1839                 }
1840         }
1841
1842         if (order & NLP_SEARCH_UNUSED) {
1843                 list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_adisc_list,
1844                                         nlp_listp) {
1845                         if (lpfc_matchdid(phba, ndlp, did)) {
1846
1847                                 data1 = (((uint32_t) ndlp->nlp_state << 24) |
1848                                          ((uint32_t) ndlp->nlp_xri << 16) |
1849                                          ((uint32_t) ndlp->nlp_type << 8) |
1850                                          ((uint32_t) ndlp->nlp_rpi & 0xff));
1851                                 /* LOG change to UNUSED */
1852                                 /* FIND node DID unused */
1853                                 lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
1854                                                 "%d:0931 FIND node DID unused "
1855                                                 "Data: x%p x%x x%x x%x\n",
1856                                                 phba->brd_no,
1857                                                 ndlp, ndlp->nlp_DID,
1858                                                 ndlp->nlp_flag, data1);
1859                                 spin_unlock_irq(phba->host->host_lock);
1860                                 return ndlp;
1861                         }
1862                 }
1863         }
1864
1865         spin_unlock_irq(phba->host->host_lock);
1866
1867         /* FIND node did <did> NOT FOUND */
1868         lpfc_printf_log(phba,
1869                         KERN_INFO,
1870                         LOG_NODE,
1871                         "%d:0932 FIND node did x%x NOT FOUND Data: x%x\n",
1872                         phba->brd_no, did, order);
1873
1874         /* no match found */
1875         return NULL;
1876 }
1877
1878 struct lpfc_nodelist *
1879 lpfc_setup_disc_node(struct lpfc_hba * phba, uint32_t did)
1880 {
1881         struct lpfc_nodelist *ndlp;
1882         uint32_t flg;
1883
1884         ndlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, did);
1885         if (!ndlp) {
1886                 if ((phba->fc_flag & FC_RSCN_MODE) &&
1887                    ((lpfc_rscn_payload_check(phba, did) == 0)))
1888                         return NULL;
1889                 ndlp = (struct lpfc_nodelist *)
1890                      mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
1891                 if (!ndlp)
1892                         return NULL;
1893                 lpfc_nlp_init(phba, ndlp, did);
1894                 ndlp->nlp_state = NLP_STE_NPR_NODE;
1895                 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1896                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1897                 return ndlp;
1898         }
1899         if (phba->fc_flag & FC_RSCN_MODE) {
1900                 if (lpfc_rscn_payload_check(phba, did)) {
1901                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1902
1903                         /* Since this node is marked for discovery,
1904                          * delay timeout is not needed.
1905                          */
1906                         if (ndlp->nlp_flag & NLP_DELAY_TMO)
1907                                 lpfc_cancel_retry_delay_tmo(phba, ndlp);
1908                 } else
1909                         ndlp = NULL;
1910         } else {
1911                 flg = ndlp->nlp_flag & NLP_LIST_MASK;
1912                 if ((flg == NLP_ADISC_LIST) || (flg == NLP_PLOGI_LIST))
1913                         return NULL;
1914                 ndlp->nlp_state = NLP_STE_NPR_NODE;
1915                 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1916                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1917         }
1918         return ndlp;
1919 }
1920
1921 /* Build a list of nodes to discover based on the loopmap */
1922 void
1923 lpfc_disc_list_loopmap(struct lpfc_hba * phba)
1924 {
1925         int j;
1926         uint32_t alpa, index;
1927
1928         if (phba->hba_state <= LPFC_LINK_DOWN) {
1929                 return;
1930         }
1931         if (phba->fc_topology != TOPOLOGY_LOOP) {
1932                 return;
1933         }
1934
1935         /* Check for loop map present or not */
1936         if (phba->alpa_map[0]) {
1937                 for (j = 1; j <= phba->alpa_map[0]; j++) {
1938                         alpa = phba->alpa_map[j];
1939
1940                         if (((phba->fc_myDID & 0xff) == alpa) || (alpa == 0)) {
1941                                 continue;
1942                         }
1943                         lpfc_setup_disc_node(phba, alpa);
1944                 }
1945         } else {
1946                 /* No alpamap, so try all alpa's */
1947                 for (j = 0; j < FC_MAXLOOP; j++) {
1948                         /* If cfg_scan_down is set, start from highest
1949                          * ALPA (0xef) to lowest (0x1).
1950                          */
1951                         if (phba->cfg_scan_down)
1952                                 index = j;
1953                         else
1954                                 index = FC_MAXLOOP - j - 1;
1955                         alpa = lpfcAlpaArray[index];
1956                         if ((phba->fc_myDID & 0xff) == alpa) {
1957                                 continue;
1958                         }
1959
1960                         lpfc_setup_disc_node(phba, alpa);
1961                 }
1962         }
1963         return;
1964 }
1965
1966 /* Start Link up / RSCN discovery on NPR list */
1967 void
1968 lpfc_disc_start(struct lpfc_hba * phba)
1969 {
1970         struct lpfc_sli *psli;
1971         LPFC_MBOXQ_t *mbox;
1972         struct lpfc_nodelist *ndlp, *next_ndlp;
1973         uint32_t did_changed, num_sent;
1974         uint32_t clear_la_pending;
1975         int rc;
1976
1977         psli = &phba->sli;
1978
1979         if (phba->hba_state <= LPFC_LINK_DOWN) {
1980                 return;
1981         }
1982         if (phba->hba_state == LPFC_CLEAR_LA)
1983                 clear_la_pending = 1;
1984         else
1985                 clear_la_pending = 0;
1986
1987         if (phba->hba_state < LPFC_HBA_READY) {
1988                 phba->hba_state = LPFC_DISC_AUTH;
1989         }
1990         lpfc_set_disctmo(phba);
1991
1992         if (phba->fc_prevDID == phba->fc_myDID) {
1993                 did_changed = 0;
1994         } else {
1995                 did_changed = 1;
1996         }
1997         phba->fc_prevDID = phba->fc_myDID;
1998         phba->num_disc_nodes = 0;
1999
2000         /* Start Discovery state <hba_state> */
2001         lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
2002                         "%d:0202 Start Discovery hba state x%x "
2003                         "Data: x%x x%x x%x\n",
2004                         phba->brd_no, phba->hba_state, phba->fc_flag,
2005                         phba->fc_plogi_cnt, phba->fc_adisc_cnt);
2006
2007         /* If our did changed, we MUST do PLOGI */
2008         list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_npr_list,
2009                                 nlp_listp) {
2010                 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2011                         if (did_changed) {
2012                                 spin_lock_irq(phba->host->host_lock);
2013                                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2014                                 spin_unlock_irq(phba->host->host_lock);
2015                         }
2016                 }
2017         }
2018
2019         /* First do ADISCs - if any */
2020         num_sent = lpfc_els_disc_adisc(phba);
2021
2022         if (num_sent)
2023                 return;
2024
2025         if ((phba->hba_state < LPFC_HBA_READY) && (!clear_la_pending)) {
2026                 /* If we get here, there is nothing to ADISC */
2027                 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))) {
2028                         phba->hba_state = LPFC_CLEAR_LA;
2029                         lpfc_clear_la(phba, mbox);
2030                         mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
2031                         rc = lpfc_sli_issue_mbox(phba, mbox,
2032                                                  (MBX_NOWAIT | MBX_STOP_IOCB));
2033                         if (rc == MBX_NOT_FINISHED) {
2034                                 mempool_free( mbox, phba->mbox_mem_pool);
2035                                 lpfc_disc_flush_list(phba);
2036                                 psli->ring[(psli->ip_ring)].flag &=
2037                                         ~LPFC_STOP_IOCB_EVENT;
2038                                 psli->ring[(psli->fcp_ring)].flag &=
2039                                         ~LPFC_STOP_IOCB_EVENT;
2040                                 psli->ring[(psli->next_ring)].flag &=
2041                                         ~LPFC_STOP_IOCB_EVENT;
2042                                 phba->hba_state = LPFC_HBA_READY;
2043                         }
2044                 }
2045         } else {
2046                 /* Next do PLOGIs - if any */
2047                 num_sent = lpfc_els_disc_plogi(phba);
2048
2049                 if (num_sent)
2050                         return;
2051
2052                 if (phba->fc_flag & FC_RSCN_MODE) {
2053                         /* Check to see if more RSCNs came in while we
2054                          * were processing this one.
2055                          */
2056                         if ((phba->fc_rscn_id_cnt == 0) &&
2057                             (!(phba->fc_flag & FC_RSCN_DISCOVERY))) {
2058                                 spin_lock_irq(phba->host->host_lock);
2059                                 phba->fc_flag &= ~FC_RSCN_MODE;
2060                                 spin_unlock_irq(phba->host->host_lock);
2061                         } else
2062                                 lpfc_els_handle_rscn(phba);
2063                 }
2064         }
2065         return;
2066 }
2067
2068 /*
2069  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
2070  *  ring the match the sppecified nodelist.
2071  */
2072 static void
2073 lpfc_free_tx(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp)
2074 {
2075         struct lpfc_sli *psli;
2076         IOCB_t     *icmd;
2077         struct lpfc_iocbq    *iocb, *next_iocb;
2078         struct lpfc_sli_ring *pring;
2079         struct lpfc_dmabuf   *mp;
2080
2081         psli = &phba->sli;
2082         pring = &psli->ring[LPFC_ELS_RING];
2083
2084         /* Error matching iocb on txq or txcmplq
2085          * First check the txq.
2086          */
2087         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2088                 if (iocb->context1 != ndlp) {
2089                         continue;
2090                 }
2091                 icmd = &iocb->iocb;
2092                 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
2093                     (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
2094
2095                         list_del(&iocb->list);
2096                         pring->txq_cnt--;
2097                         lpfc_els_free_iocb(phba, iocb);
2098                 }
2099         }
2100
2101         /* Next check the txcmplq */
2102         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
2103                 if (iocb->context1 != ndlp) {
2104                         continue;
2105                 }
2106                 icmd = &iocb->iocb;
2107                 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
2108                     (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
2109
2110                         iocb->iocb_cmpl = NULL;
2111                         /* context2 = cmd, context2->next = rsp, context3 =
2112                            bpl */
2113                         if (iocb->context2) {
2114                                 /* Free the response IOCB before handling the
2115                                    command. */
2116
2117                                 mp = (struct lpfc_dmabuf *) (iocb->context2);
2118                                 mp = list_get_first(&mp->list,
2119                                                     struct lpfc_dmabuf,
2120                                                     list);
2121                                 if (mp) {
2122                                         /* Delay before releasing rsp buffer to
2123                                          * give UNREG mbox a chance to take
2124                                          * effect.
2125                                          */
2126                                         list_add(&mp->list,
2127                                                 &phba->freebufList);
2128                                 }
2129                                 lpfc_mbuf_free(phba,
2130                                                ((struct lpfc_dmabuf *)
2131                                                 iocb->context2)->virt,
2132                                                ((struct lpfc_dmabuf *)
2133                                                 iocb->context2)->phys);
2134                                 kfree(iocb->context2);
2135                         }
2136
2137                         if (iocb->context3) {
2138                                 lpfc_mbuf_free(phba,
2139                                                ((struct lpfc_dmabuf *)
2140                                                 iocb->context3)->virt,
2141                                                ((struct lpfc_dmabuf *)
2142                                                 iocb->context3)->phys);
2143                                 kfree(iocb->context3);
2144                         }
2145                 }
2146         }
2147
2148         return;
2149 }
2150
2151 void
2152 lpfc_disc_flush_list(struct lpfc_hba * phba)
2153 {
2154         struct lpfc_nodelist *ndlp, *next_ndlp;
2155
2156         if (phba->fc_plogi_cnt) {
2157                 list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_plogi_list,
2158                                         nlp_listp) {
2159                         lpfc_free_tx(phba, ndlp);
2160                         lpfc_nlp_remove(phba, ndlp);
2161                 }
2162         }
2163         if (phba->fc_adisc_cnt) {
2164                 list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_adisc_list,
2165                                         nlp_listp) {
2166                         lpfc_free_tx(phba, ndlp);
2167                         lpfc_nlp_remove(phba, ndlp);
2168                 }
2169         }
2170         return;
2171 }
2172
2173 /*****************************************************************************/
2174 /*
2175  * NAME:     lpfc_disc_timeout
2176  *
2177  * FUNCTION: Fibre Channel driver discovery timeout routine.
2178  *
2179  * EXECUTION ENVIRONMENT: interrupt only
2180  *
2181  * CALLED FROM:
2182  *      Timer function
2183  *
2184  * RETURNS:
2185  *      none
2186  */
2187 /*****************************************************************************/
2188 void
2189 lpfc_disc_timeout(unsigned long ptr)
2190 {
2191         struct lpfc_hba *phba = (struct lpfc_hba *)ptr;
2192         unsigned long flags = 0;
2193
2194         if (unlikely(!phba))
2195                 return;
2196
2197         spin_lock_irqsave(phba->host->host_lock, flags);
2198         if (!(phba->work_hba_events & WORKER_DISC_TMO)) {
2199                 phba->work_hba_events |= WORKER_DISC_TMO;
2200                 if (phba->work_wait)
2201                         wake_up(phba->work_wait);
2202         }
2203         spin_unlock_irqrestore(phba->host->host_lock, flags);
2204         return;
2205 }
2206
2207 static void
2208 lpfc_disc_timeout_handler(struct lpfc_hba *phba)
2209 {
2210         struct lpfc_sli *psli;
2211         struct lpfc_nodelist *ndlp, *next_ndlp;
2212         LPFC_MBOXQ_t *clearlambox, *initlinkmbox;
2213         int rc, clrlaerr = 0;
2214
2215         if (unlikely(!phba))
2216                 return;
2217
2218         if (!(phba->fc_flag & FC_DISC_TMO))
2219                 return;
2220
2221         psli = &phba->sli;
2222
2223         spin_lock_irq(phba->host->host_lock);
2224         phba->fc_flag &= ~FC_DISC_TMO;
2225         spin_unlock_irq(phba->host->host_lock);
2226
2227         switch (phba->hba_state) {
2228
2229         case LPFC_LOCAL_CFG_LINK:
2230         /* hba_state is identically LPFC_LOCAL_CFG_LINK while waiting for FAN */
2231                 /* FAN timeout */
2232                 lpfc_printf_log(phba,
2233                                  KERN_WARNING,
2234                                  LOG_DISCOVERY,
2235                                  "%d:0221 FAN timeout\n",
2236                                  phba->brd_no);
2237
2238                 /* Start discovery by sending FLOGI, clean up old rpis */
2239                 list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_npr_list,
2240                                         nlp_listp) {
2241                         if (ndlp->nlp_type & NLP_FABRIC) {
2242                                 /* Clean up the ndlp on Fabric connections */
2243                                 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
2244                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2245                                 /* Fail outstanding IO now since device
2246                                  * is marked for PLOGI.
2247                                  */
2248                                 lpfc_unreg_rpi(phba, ndlp);
2249                         }
2250                 }
2251                 phba->hba_state = LPFC_FLOGI;
2252                 lpfc_set_disctmo(phba);
2253                 lpfc_initial_flogi(phba);
2254                 break;
2255
2256         case LPFC_FLOGI:
2257         /* hba_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
2258                 /* Initial FLOGI timeout */
2259                 lpfc_printf_log(phba,
2260                                  KERN_ERR,
2261                                  LOG_DISCOVERY,
2262                                  "%d:0222 Initial FLOGI timeout\n",
2263                                  phba->brd_no);
2264
2265                 /* Assume no Fabric and go on with discovery.
2266                  * Check for outstanding ELS FLOGI to abort.
2267                  */
2268
2269                 /* FLOGI failed, so just use loop map to make discovery list */
2270                 lpfc_disc_list_loopmap(phba);
2271
2272                 /* Start discovery */
2273                 lpfc_disc_start(phba);
2274                 break;
2275
2276         case LPFC_FABRIC_CFG_LINK:
2277         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
2278            NameServer login */
2279                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
2280                                 "%d:0223 Timeout while waiting for NameServer "
2281                                 "login\n", phba->brd_no);
2282
2283                 /* Next look for NameServer ndlp */
2284                 ndlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, NameServer_DID);
2285                 if (ndlp)
2286                         lpfc_nlp_remove(phba, ndlp);
2287                 /* Start discovery */
2288                 lpfc_disc_start(phba);
2289                 break;
2290
2291         case LPFC_NS_QRY:
2292         /* Check for wait for NameServer Rsp timeout */
2293                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
2294                                 "%d:0224 NameServer Query timeout "
2295                                 "Data: x%x x%x\n",
2296                                 phba->brd_no,
2297                                 phba->fc_ns_retry, LPFC_MAX_NS_RETRY);
2298
2299                 ndlp = lpfc_findnode_did(phba, NLP_SEARCH_UNMAPPED,
2300                                                                 NameServer_DID);
2301                 if (ndlp) {
2302                         if (phba->fc_ns_retry < LPFC_MAX_NS_RETRY) {
2303                                 /* Try it one more time */
2304                                 rc = lpfc_ns_cmd(phba, ndlp, SLI_CTNS_GID_FT);
2305                                 if (rc == 0)
2306                                         break;
2307                         }
2308                         phba->fc_ns_retry = 0;
2309                 }
2310
2311                 /* Nothing to authenticate, so CLEAR_LA right now */
2312                 clearlambox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2313                 if (!clearlambox) {
2314                         clrlaerr = 1;
2315                         lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
2316                                         "%d:0226 Device Discovery "
2317                                         "completion error\n",
2318                                         phba->brd_no);
2319                         phba->hba_state = LPFC_HBA_ERROR;
2320                         break;
2321                 }
2322
2323                 phba->hba_state = LPFC_CLEAR_LA;
2324                 lpfc_clear_la(phba, clearlambox);
2325                 clearlambox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
2326                 rc = lpfc_sli_issue_mbox(phba, clearlambox,
2327                                          (MBX_NOWAIT | MBX_STOP_IOCB));
2328                 if (rc == MBX_NOT_FINISHED) {
2329                         mempool_free(clearlambox, phba->mbox_mem_pool);
2330                         clrlaerr = 1;
2331                         break;
2332                 }
2333
2334                 /* Setup and issue mailbox INITIALIZE LINK command */
2335                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2336                 if (!initlinkmbox) {
2337                         lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
2338                                         "%d:0226 Device Discovery "
2339                                         "completion error\n",
2340                                         phba->brd_no);
2341                         phba->hba_state = LPFC_HBA_ERROR;
2342                         break;
2343                 }
2344
2345                 lpfc_linkdown(phba);
2346                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
2347                                phba->cfg_link_speed);
2348                 initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
2349                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox,
2350                                          (MBX_NOWAIT | MBX_STOP_IOCB));
2351                 if (rc == MBX_NOT_FINISHED)
2352                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
2353
2354                 break;
2355
2356         case LPFC_DISC_AUTH:
2357         /* Node Authentication timeout */
2358                 lpfc_printf_log(phba,
2359                                  KERN_ERR,
2360                                  LOG_DISCOVERY,
2361                                  "%d:0227 Node Authentication timeout\n",
2362                                  phba->brd_no);
2363                 lpfc_disc_flush_list(phba);
2364                 clearlambox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2365                 if (!clearlambox) {
2366                         clrlaerr = 1;
2367                         lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
2368                                         "%d:0226 Device Discovery "
2369                                         "completion error\n",
2370                                         phba->brd_no);
2371                         phba->hba_state = LPFC_HBA_ERROR;
2372                         break;
2373                 }
2374                 phba->hba_state = LPFC_CLEAR_LA;
2375                 lpfc_clear_la(phba, clearlambox);
2376                 clearlambox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
2377                 rc = lpfc_sli_issue_mbox(phba, clearlambox,
2378                                          (MBX_NOWAIT | MBX_STOP_IOCB));
2379                 if (rc == MBX_NOT_FINISHED) {
2380                         mempool_free(clearlambox, phba->mbox_mem_pool);
2381                         clrlaerr = 1;
2382                 }
2383                 break;
2384
2385         case LPFC_CLEAR_LA:
2386         /* CLEAR LA timeout */
2387                 lpfc_printf_log(phba,
2388                                  KERN_ERR,
2389                                  LOG_DISCOVERY,
2390                                  "%d:0228 CLEAR LA timeout\n",
2391                                  phba->brd_no);
2392                 clrlaerr = 1;
2393                 break;
2394
2395         case LPFC_HBA_READY:
2396                 if (phba->fc_flag & FC_RSCN_MODE) {
2397                         lpfc_printf_log(phba,
2398                                         KERN_ERR,
2399                                         LOG_DISCOVERY,
2400                                         "%d:0231 RSCN timeout Data: x%x x%x\n",
2401                                         phba->brd_no,
2402                                         phba->fc_ns_retry, LPFC_MAX_NS_RETRY);
2403
2404                         /* Cleanup any outstanding ELS commands */
2405                         lpfc_els_flush_cmd(phba);
2406
2407                         lpfc_els_flush_rscn(phba);
2408                         lpfc_disc_flush_list(phba);
2409                 }
2410                 break;
2411         }
2412
2413         if (clrlaerr) {
2414                 lpfc_disc_flush_list(phba);
2415                 psli->ring[(psli->ip_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2416                 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2417                 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2418                 phba->hba_state = LPFC_HBA_READY;
2419         }
2420
2421         return;
2422 }
2423
2424 static void
2425 lpfc_nodev_timeout(unsigned long ptr)
2426 {
2427         struct lpfc_hba *phba;
2428         struct lpfc_nodelist *ndlp;
2429         unsigned long iflag;
2430         struct lpfc_work_evt  *evtp;
2431
2432         ndlp = (struct lpfc_nodelist *)ptr;
2433         phba = ndlp->nlp_phba;
2434         evtp = &ndlp->nodev_timeout_evt;
2435         spin_lock_irqsave(phba->host->host_lock, iflag);
2436
2437         if (!list_empty(&evtp->evt_listp)) {
2438                 spin_unlock_irqrestore(phba->host->host_lock, iflag);
2439                 return;
2440         }
2441         evtp->evt_arg1  = ndlp;
2442         evtp->evt       = LPFC_EVT_NODEV_TMO;
2443         list_add_tail(&evtp->evt_listp, &phba->work_list);
2444         if (phba->work_wait)
2445                 wake_up(phba->work_wait);
2446
2447         spin_unlock_irqrestore(phba->host->host_lock, iflag);
2448         return;
2449 }
2450
2451
2452 /*
2453  * This routine handles processing a NameServer REG_LOGIN mailbox
2454  * command upon completion. It is setup in the LPFC_MBOXQ
2455  * as the completion routine when the command is
2456  * handed off to the SLI layer.
2457  */
2458 void
2459 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
2460 {
2461         struct lpfc_sli *psli;
2462         MAILBOX_t *mb;
2463         struct lpfc_dmabuf *mp;
2464         struct lpfc_nodelist *ndlp;
2465
2466         psli = &phba->sli;
2467         mb = &pmb->mb;
2468
2469         ndlp = (struct lpfc_nodelist *) pmb->context2;
2470         mp = (struct lpfc_dmabuf *) (pmb->context1);
2471
2472         pmb->context1 = NULL;
2473
2474         ndlp->nlp_rpi = mb->un.varWords[0];
2475         ndlp->nlp_type |= NLP_FABRIC;
2476         ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
2477         lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
2478
2479         /* Start issuing Fabric-Device Management Interface (FDMI)
2480          * command to 0xfffffa (FDMI well known port)
2481          */
2482         if (phba->cfg_fdmi_on == 1) {
2483                 lpfc_fdmi_cmd(phba, ndlp, SLI_MGMT_DHBA);
2484         } else {
2485                 /*
2486                  * Delay issuing FDMI command if fdmi-on=2
2487                  * (supporting RPA/hostnmae)
2488                  */
2489                 mod_timer(&phba->fc_fdmitmo, jiffies + HZ * 60);
2490         }
2491
2492         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2493         kfree(mp);
2494         mempool_free( pmb, phba->mbox_mem_pool);
2495
2496         return;
2497 }
2498
2499 /*
2500  * This routine looks up the ndlp  lists
2501  * for the given RPI. If rpi found
2502  * it return the node list pointer
2503  * else return NULL.
2504  */
2505 struct lpfc_nodelist *
2506 lpfc_findnode_rpi(struct lpfc_hba * phba, uint16_t rpi)
2507 {
2508         struct lpfc_nodelist *ndlp;
2509         struct list_head * lists[]={&phba->fc_nlpunmap_list,
2510                                     &phba->fc_nlpmap_list,
2511                                     &phba->fc_plogi_list,
2512                                     &phba->fc_adisc_list,
2513                                     &phba->fc_reglogin_list};
2514         int i;
2515
2516         spin_lock_irq(phba->host->host_lock);
2517         for (i = 0; i < ARRAY_SIZE(lists); i++ )
2518                 list_for_each_entry(ndlp, lists[i], nlp_listp)
2519                         if (ndlp->nlp_rpi == rpi) {
2520                                 spin_unlock_irq(phba->host->host_lock);
2521                                 return ndlp;
2522                         }
2523         spin_unlock_irq(phba->host->host_lock);
2524         return NULL;
2525 }
2526
2527 /*
2528  * This routine looks up the ndlp  lists
2529  * for the given WWPN. If WWPN found
2530  * it return the node list pointer
2531  * else return NULL.
2532  */
2533 struct lpfc_nodelist *
2534 lpfc_findnode_wwpn(struct lpfc_hba * phba, uint32_t order,
2535                    struct lpfc_name * wwpn)
2536 {
2537         struct lpfc_nodelist *ndlp;
2538         struct list_head * lists[]={&phba->fc_nlpunmap_list,
2539                                     &phba->fc_nlpmap_list,
2540                                     &phba->fc_npr_list,
2541                                     &phba->fc_plogi_list,
2542                                     &phba->fc_adisc_list,
2543                                     &phba->fc_reglogin_list,
2544                                     &phba->fc_prli_list};
2545         uint32_t search[]={NLP_SEARCH_UNMAPPED,
2546                            NLP_SEARCH_MAPPED,
2547                            NLP_SEARCH_NPR,
2548                            NLP_SEARCH_PLOGI,
2549                            NLP_SEARCH_ADISC,
2550                            NLP_SEARCH_REGLOGIN,
2551                            NLP_SEARCH_PRLI};
2552         int i;
2553
2554         spin_lock_irq(phba->host->host_lock);
2555         for (i = 0; i < ARRAY_SIZE(lists); i++ ) {
2556                 if (!(order & search[i]))
2557                         continue;
2558                 list_for_each_entry(ndlp, lists[i], nlp_listp) {
2559                         if (memcmp(&ndlp->nlp_portname, wwpn,
2560                                    sizeof(struct lpfc_name)) == 0) {
2561                                 spin_unlock_irq(phba->host->host_lock);
2562                                 return ndlp;
2563                         }
2564                 }
2565         }
2566         spin_unlock_irq(phba->host->host_lock);
2567         return NULL;
2568 }
2569
2570 void
2571 lpfc_nlp_init(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
2572                  uint32_t did)
2573 {
2574         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
2575         INIT_LIST_HEAD(&ndlp->nodev_timeout_evt.evt_listp);
2576         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
2577         init_timer(&ndlp->nlp_tmofunc);
2578         ndlp->nlp_tmofunc.function = lpfc_nodev_timeout;
2579         ndlp->nlp_tmofunc.data = (unsigned long)ndlp;
2580         init_timer(&ndlp->nlp_delayfunc);
2581         ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
2582         ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
2583         ndlp->nlp_DID = did;
2584         ndlp->nlp_phba = phba;
2585         ndlp->nlp_sid = NLP_NO_SID;
2586         return;
2587 }