Pileus Git - ~andy/linux/blob - drivers/scsi/lpfc/lpfc_hbadisc.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2004-2009 Emulex.  All rights reserved.           *
   5  * EMULEX and SLI are trademarks of Emulex.                        *
   6  * www.emulex.com                                                  *
   7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
   8  *                                                                 *
   9  * This program is free software; you can redistribute it and/or   *
  10  * modify it under the terms of version 2 of the GNU General       *
  11  * Public License as published by the Free Software Foundation.    *
  12  * This program is distributed in the hope that it will be useful. *
  13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  18  * more details, a copy of which can be found in the file COPYING  *
  19  * included with this package.                                     *
  20  *******************************************************************/
  21
  22 #include <linux/blkdev.h>
  23 #include <linux/pci.h>
  24 #include <linux/kthread.h>
  25 #include <linux/interrupt.h>
  26
  27 #include <scsi/scsi.h>
  28 #include <scsi/scsi_device.h>
  29 #include <scsi/scsi_host.h>
  30 #include <scsi/scsi_transport_fc.h>
  31
  32 #include "lpfc_hw4.h"
  33 #include "lpfc_hw.h"
  34 #include "lpfc_nl.h"
  35 #include "lpfc_disc.h"
  36 #include "lpfc_sli.h"
  37 #include "lpfc_sli4.h"
  38 #include "lpfc_scsi.h"
  39 #include "lpfc.h"
  40 #include "lpfc_logmsg.h"
  41 #include "lpfc_crtn.h"
  42 #include "lpfc_vport.h"
  43 #include "lpfc_debugfs.h"
  44
  45 /* AlpaArray for assignment of scsid for scan-down and bind_method */
  46 static uint8_t lpfcAlpaArray[] = {
  47         0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
  48         0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
  49         0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
  50         0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
  51         0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
  52         0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
  53         0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
  54         0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
  55         0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
  56         0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
  57         0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
  58         0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
  59         0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
  60 };
  61
  62 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
  63 static void lpfc_disc_flush_list(struct lpfc_vport *vport);
  64 static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *);
  65
  66 void
  67 lpfc_terminate_rport_io(struct fc_rport *rport)
  68 {
  69         struct lpfc_rport_data *rdata;
  70         struct lpfc_nodelist * ndlp;
  71         struct lpfc_hba *phba;
  72
  73         rdata = rport->dd_data;
  74         ndlp = rdata->pnode;
  75
  76         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
  77                 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
  78                         printk(KERN_ERR "Cannot find remote node"
  79                         " to terminate I/O Data x%x\n",
  80                         rport->port_id);
  81                 return;
  82         }
  83
  84         phba  = ndlp->phba;
  85
  86         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
  87                 "rport terminate: sid:x%x did:x%x flg:x%x",
  88                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
  89
  90         if (ndlp->nlp_sid != NLP_NO_SID) {
  91                 lpfc_sli_abort_iocb(ndlp->vport,
  92                         &phba->sli.ring[phba->sli.fcp_ring],
  93                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
  94         }
  95 }
  96
  97 /*
  98  * This function will be called when dev_loss_tmo fire.
  99  */
 100 void
 101 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
 102 {
 103         struct lpfc_rport_data *rdata;
 104         struct lpfc_nodelist * ndlp;
 105         struct lpfc_vport *vport;
 106         struct lpfc_hba   *phba;
 107         struct lpfc_work_evt *evtp;
 108         int  put_node;
 109         int  put_rport;
 110
 111         rdata = rport->dd_data;
 112         ndlp = rdata->pnode;
 113         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
 114                 return;
 115
 116         vport = ndlp->vport;
 117         phba  = vport->phba;
 118
 119         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 120                 "rport devlosscb: sid:x%x did:x%x flg:x%x",
 121                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 122
 123         /* Don't defer this if we are in the process of deleting the vport
 124          * or unloading the driver. The unload will cleanup the node
 125          * appropriately we just need to cleanup the ndlp rport info here.
 126          */
 127         if (vport->load_flag & FC_UNLOADING) {
 128                 put_node = rdata->pnode != NULL;
 129                 put_rport = ndlp->rport != NULL;
 130                 rdata->pnode = NULL;
 131                 ndlp->rport = NULL;
 132                 if (put_node)
 133                         lpfc_nlp_put(ndlp);
 134                 if (put_rport)
 135                         put_device(&rport->dev);
 136                 return;
 137         }
 138
 139         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
 140                 return;
 141
 142         evtp = &ndlp->dev_loss_evt;
 143
 144         if (!list_empty(&evtp->evt_listp))
 145                 return;
 146
 147         spin_lock_irq(&phba->hbalock);
 148         /* We need to hold the node by incrementing the reference
 149          * count until this queued work is done
 150          */
 151         evtp->evt_arg1  = lpfc_nlp_get(ndlp);
 152         if (evtp->evt_arg1) {
 153                 evtp->evt = LPFC_EVT_DEV_LOSS;
 154                 list_add_tail(&evtp->evt_listp, &phba->work_list);
 155                 lpfc_worker_wake_up(phba);
 156         }
 157         spin_unlock_irq(&phba->hbalock);
 158
 159         return;
 160 }
 161
 162 /*
 163  * This function is called from the worker thread when dev_loss_tmo
 164  * expire.
 165  */
 166 static void
 167 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 168 {
 169         struct lpfc_rport_data *rdata;
 170         struct fc_rport   *rport;
 171         struct lpfc_vport *vport;
 172         struct lpfc_hba   *phba;
 173         uint8_t *name;
 174         int  put_node;
 175         int  put_rport;
 176         int warn_on = 0;
 177
 178         rport = ndlp->rport;
 179
 180         if (!rport)
 181                 return;
 182
 183         rdata = rport->dd_data;
 184         name = (uint8_t *) &ndlp->nlp_portname;
 185         vport = ndlp->vport;
 186         phba  = vport->phba;
 187
 188         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
 189                 "rport devlosstmo:did:x%x type:x%x id:x%x",
 190                 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
 191
 192         /* Don't defer this if we are in the process of deleting the vport
 193          * or unloading the driver. The unload will cleanup the node
 194          * appropriately we just need to cleanup the ndlp rport info here.
 195          */
 196         if (vport->load_flag & FC_UNLOADING) {
 197                 if (ndlp->nlp_sid != NLP_NO_SID) {
 198                         /* flush the target */
 199                         lpfc_sli_abort_iocb(vport,
 200                                         &phba->sli.ring[phba->sli.fcp_ring],
 201                                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 202                 }
 203                 put_node = rdata->pnode != NULL;
 204                 put_rport = ndlp->rport != NULL;
 205                 rdata->pnode = NULL;
 206                 ndlp->rport = NULL;
 207                 if (put_node)
 208                         lpfc_nlp_put(ndlp);
 209                 if (put_rport)
 210                         put_device(&rport->dev);
 211                 return;
 212         }
 213
 214         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
 215                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 216                                  "0284 Devloss timeout Ignored on "
 217                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
 218                                  "NPort x%x\n",
 219                                  *name, *(name+1), *(name+2), *(name+3),
 220                                  *(name+4), *(name+5), *(name+6), *(name+7),
 221                                  ndlp->nlp_DID);
 222                 return;
 223         }
 224
 225         if (ndlp->nlp_type & NLP_FABRIC) {
 226                 /* We will clean up these Nodes in linkup */
 227                 put_node = rdata->pnode != NULL;
 228                 put_rport = ndlp->rport != NULL;
 229                 rdata->pnode = NULL;
 230                 ndlp->rport = NULL;
 231                 if (put_node)
 232                         lpfc_nlp_put(ndlp);
 233                 if (put_rport)
 234                         put_device(&rport->dev);
 235                 return;
 236         }
 237
 238         if (ndlp->nlp_sid != NLP_NO_SID) {
 239                 warn_on = 1;
 240                 /* flush the target */
 241                 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
 242                                     ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 243         }
 244
 245         if (warn_on) {
 246                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 247                                  "0203 Devloss timeout on "
 248                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 249                                  "NPort x%06x Data: x%x x%x x%x\n",
 250                                  *name, *(name+1), *(name+2), *(name+3),
 251                                  *(name+4), *(name+5), *(name+6), *(name+7),
 252                                  ndlp->nlp_DID, ndlp->nlp_flag,
 253                                  ndlp->nlp_state, ndlp->nlp_rpi);
 254         } else {
 255                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 256                                  "0204 Devloss timeout on "
 257                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
 258                                  "NPort x%06x Data: x%x x%x x%x\n",
 259                                  *name, *(name+1), *(name+2), *(name+3),
 260                                  *(name+4), *(name+5), *(name+6), *(name+7),
 261                                  ndlp->nlp_DID, ndlp->nlp_flag,
 262                                  ndlp->nlp_state, ndlp->nlp_rpi);
 263         }
 264
 265         put_node = rdata->pnode != NULL;
 266         put_rport = ndlp->rport != NULL;
 267         rdata->pnode = NULL;
 268         ndlp->rport = NULL;
 269         if (put_node)
 270                 lpfc_nlp_put(ndlp);
 271         if (put_rport)
 272                 put_device(&rport->dev);
 273
 274         if (!(vport->load_flag & FC_UNLOADING) &&
 275             !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
 276             !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
 277             (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE))
 278                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 279
 280         lpfc_unregister_unused_fcf(phba);
 281 }
 282
 283 /**
 284  * lpfc_alloc_fast_evt - Allocates data structure for posting event
 285  * @phba: Pointer to hba context object.
 286  *
 287  * This function is called from the functions which need to post
 288  * events from interrupt context. This function allocates data
 289  * structure required for posting event. It also keeps track of
 290  * number of events pending and prevent event storm when there are
 291  * too many events.
 292  **/
 293 struct lpfc_fast_path_event *
 294 lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
 295         struct lpfc_fast_path_event *ret;
 296
 297         /* If there are lot of fast event do not exhaust memory due to this */
 298         if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
 299                 return NULL;
 300
 301         ret = kzalloc(sizeof(struct lpfc_fast_path_event),
 302                         GFP_ATOMIC);
 303         if (ret) {
 304                 atomic_inc(&phba->fast_event_count);
 305                 INIT_LIST_HEAD(&ret->work_evt.evt_listp);
 306                 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
 307         }
 308         return ret;
 309 }
 310
 311 /**
 312  * lpfc_free_fast_evt - Frees event data structure
 313  * @phba: Pointer to hba context object.
 314  * @evt:  Event object which need to be freed.
 315  *
 316  * This function frees the data structure required for posting
 317  * events.
 318  **/
 319 void
 320 lpfc_free_fast_evt(struct lpfc_hba *phba,
 321                 struct lpfc_fast_path_event *evt) {
 322
 323         atomic_dec(&phba->fast_event_count);
 324         kfree(evt);
 325 }
 326
 327 /**
 328  * lpfc_send_fastpath_evt - Posts events generated from fast path
 329  * @phba: Pointer to hba context object.
 330  * @evtp: Event data structure.
 331  *
 332  * This function is called from worker thread, when the interrupt
 333  * context need to post an event. This function posts the event
 334  * to fc transport netlink interface.
 335  **/
 336 static void
 337 lpfc_send_fastpath_evt(struct lpfc_hba *phba,
 338                 struct lpfc_work_evt *evtp)
 339 {
 340         unsigned long evt_category, evt_sub_category;
 341         struct lpfc_fast_path_event *fast_evt_data;
 342         char *evt_data;
 343         uint32_t evt_data_size;
 344         struct Scsi_Host *shost;
 345
 346         fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
 347                 work_evt);
 348
 349         evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
 350         evt_sub_category = (unsigned long) fast_evt_data->un.
 351                         fabric_evt.subcategory;
 352         shost = lpfc_shost_from_vport(fast_evt_data->vport);
 353         if (evt_category == FC_REG_FABRIC_EVENT) {
 354                 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
 355                         evt_data = (char *) &fast_evt_data->un.read_check_error;
 356                         evt_data_size = sizeof(fast_evt_data->un.
 357                                 read_check_error);
 358                 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
 359                         (evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
 360                         evt_data = (char *) &fast_evt_data->un.fabric_evt;
 361                         evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
 362                 } else {
 363                         lpfc_free_fast_evt(phba, fast_evt_data);
 364                         return;
 365                 }
 366         } else if (evt_category == FC_REG_SCSI_EVENT) {
 367                 switch (evt_sub_category) {
 368                 case LPFC_EVENT_QFULL:
 369                 case LPFC_EVENT_DEVBSY:
 370                         evt_data = (char *) &fast_evt_data->un.scsi_evt;
 371                         evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
 372                         break;
 373                 case LPFC_EVENT_CHECK_COND:
 374                         evt_data = (char *) &fast_evt_data->un.check_cond_evt;
 375                         evt_data_size =  sizeof(fast_evt_data->un.
 376                                 check_cond_evt);
 377                         break;
 378                 case LPFC_EVENT_VARQUEDEPTH:
 379                         evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
 380                         evt_data_size = sizeof(fast_evt_data->un.
 381                                 queue_depth_evt);
 382                         break;
 383                 default:
 384                         lpfc_free_fast_evt(phba, fast_evt_data);
 385                         return;
 386                 }
 387         } else {
 388                 lpfc_free_fast_evt(phba, fast_evt_data);
 389                 return;
 390         }
 391
 392         fc_host_post_vendor_event(shost,
 393                 fc_get_event_number(),
 394                 evt_data_size,
 395                 evt_data,
 396                 LPFC_NL_VENDOR_ID);
 397
 398         lpfc_free_fast_evt(phba, fast_evt_data);
 399         return;
 400 }
 401
 402 static void
 403 lpfc_work_list_done(struct lpfc_hba *phba)
 404 {
 405         struct lpfc_work_evt  *evtp = NULL;
 406         struct lpfc_nodelist  *ndlp;
 407         int free_evt;
 408
 409         spin_lock_irq(&phba->hbalock);
 410         while (!list_empty(&phba->work_list)) {
 411                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
 412                                  evt_listp);
 413                 spin_unlock_irq(&phba->hbalock);
 414                 free_evt = 1;
 415                 switch (evtp->evt) {
 416                 case LPFC_EVT_ELS_RETRY:
 417                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
 418                         lpfc_els_retry_delay_handler(ndlp);
 419                         free_evt = 0; /* evt is part of ndlp */
 420                         /* decrement the node reference count held
 421                          * for this queued work
 422                          */
 423                         lpfc_nlp_put(ndlp);
 424                         break;
 425                 case LPFC_EVT_DEV_LOSS:
 426                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
 427                         lpfc_dev_loss_tmo_handler(ndlp);
 428                         free_evt = 0;
 429                         /* decrement the node reference count held for
 430                          * this queued work
 431                          */
 432                         lpfc_nlp_put(ndlp);
 433                         break;
 434                 case LPFC_EVT_ONLINE:
 435                         if (phba->link_state < LPFC_LINK_DOWN)
 436                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
 437                         else
 438                                 *(int *) (evtp->evt_arg1) = 0;
 439                         complete((struct completion *)(evtp->evt_arg2));
 440                         break;
 441                 case LPFC_EVT_OFFLINE_PREP:
 442                         if (phba->link_state >= LPFC_LINK_DOWN)
 443                                 lpfc_offline_prep(phba);
 444                         *(int *)(evtp->evt_arg1) = 0;
 445                         complete((struct completion *)(evtp->evt_arg2));
 446                         break;
 447                 case LPFC_EVT_OFFLINE:
 448                         lpfc_offline(phba);
 449                         lpfc_sli_brdrestart(phba);
 450                         *(int *)(evtp->evt_arg1) =
 451                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
 452                         lpfc_unblock_mgmt_io(phba);
 453                         complete((struct completion *)(evtp->evt_arg2));
 454                         break;
 455                 case LPFC_EVT_WARM_START:
 456                         lpfc_offline(phba);
 457                         lpfc_reset_barrier(phba);
 458                         lpfc_sli_brdreset(phba);
 459                         lpfc_hba_down_post(phba);
 460                         *(int *)(evtp->evt_arg1) =
 461                                 lpfc_sli_brdready(phba, HS_MBRDY);
 462                         lpfc_unblock_mgmt_io(phba);
 463                         complete((struct completion *)(evtp->evt_arg2));
 464                         break;
 465                 case LPFC_EVT_KILL:
 466                         lpfc_offline(phba);
 467                         *(int *)(evtp->evt_arg1)
 468                                 = (phba->pport->stopped)
 469                                         ? 0 : lpfc_sli_brdkill(phba);
 470                         lpfc_unblock_mgmt_io(phba);
 471                         complete((struct completion *)(evtp->evt_arg2));
 472                         break;
 473                 case LPFC_EVT_FASTPATH_MGMT_EVT:
 474                         lpfc_send_fastpath_evt(phba, evtp);
 475                         free_evt = 0;
 476                         break;
 477                 }
 478                 if (free_evt)
 479                         kfree(evtp);
 480                 spin_lock_irq(&phba->hbalock);
 481         }
 482         spin_unlock_irq(&phba->hbalock);
 483
 484 }
 485
 486 static void
 487 lpfc_work_done(struct lpfc_hba *phba)
 488 {
 489         struct lpfc_sli_ring *pring;
 490         uint32_t ha_copy, status, control, work_port_events;
 491         struct lpfc_vport **vports;
 492         struct lpfc_vport *vport;
 493         int i;
 494
 495         spin_lock_irq(&phba->hbalock);
 496         ha_copy = phba->work_ha;
 497         phba->work_ha = 0;
 498         spin_unlock_irq(&phba->hbalock);
 499
 500         /* First, try to post the next mailbox command to SLI4 device */
 501         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC)
 502                 lpfc_sli4_post_async_mbox(phba);
 503
 504         if (ha_copy & HA_ERATT)
 505                 /* Handle the error attention event */
 506                 lpfc_handle_eratt(phba);
 507
 508         if (ha_copy & HA_MBATT)
 509                 lpfc_sli_handle_mb_event(phba);
 510
 511         if (ha_copy & HA_LATT)
 512                 lpfc_handle_latt(phba);
 513
 514         /* Process SLI4 events */
 515         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
 516                 if (phba->hba_flag & FCP_XRI_ABORT_EVENT)
 517                         lpfc_sli4_fcp_xri_abort_event_proc(phba);
 518                 if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
 519                         lpfc_sli4_els_xri_abort_event_proc(phba);
 520                 if (phba->hba_flag & ASYNC_EVENT)
 521                         lpfc_sli4_async_event_proc(phba);
 522                 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
 523                         spin_lock_irq(&phba->hbalock);
 524                         phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
 525                         spin_unlock_irq(&phba->hbalock);
 526                         lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
 527                 }
 528                 if (phba->hba_flag & HBA_RECEIVE_BUFFER)
 529                         lpfc_sli4_handle_received_buffer(phba);
 530         }
 531
 532         vports = lpfc_create_vport_work_array(phba);
 533         if (vports != NULL)
 534                 for (i = 0; i <= phba->max_vports; i++) {
 535                         /*
 536                          * We could have no vports in array if unloading, so if
 537                          * this happens then just use the pport
 538                          */
 539                         if (vports[i] == NULL && i == 0)
 540                                 vport = phba->pport;
 541                         else
 542                                 vport = vports[i];
 543                         if (vport == NULL)
 544                                 break;
 545                         spin_lock_irq(&vport->work_port_lock);
 546                         work_port_events = vport->work_port_events;
 547                         vport->work_port_events &= ~work_port_events;
 548                         spin_unlock_irq(&vport->work_port_lock);
 549                         if (work_port_events & WORKER_DISC_TMO)
 550                                 lpfc_disc_timeout_handler(vport);
 551                         if (work_port_events & WORKER_ELS_TMO)
 552                                 lpfc_els_timeout_handler(vport);
 553                         if (work_port_events & WORKER_HB_TMO)
 554                                 lpfc_hb_timeout_handler(phba);
 555                         if (work_port_events & WORKER_MBOX_TMO)
 556                                 lpfc_mbox_timeout_handler(phba);
 557                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
 558                                 lpfc_unblock_fabric_iocbs(phba);
 559                         if (work_port_events & WORKER_FDMI_TMO)
 560                                 lpfc_fdmi_timeout_handler(vport);
 561                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
 562                                 lpfc_ramp_down_queue_handler(phba);
 563                         if (work_port_events & WORKER_RAMP_UP_QUEUE)
 564                                 lpfc_ramp_up_queue_handler(phba);
 565                 }
 566         lpfc_destroy_vport_work_array(phba, vports);
 567
 568         pring = &phba->sli.ring[LPFC_ELS_RING];
 569         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
 570         status >>= (4*LPFC_ELS_RING);
 571         if ((status & HA_RXMASK)
 572                 || (pring->flag & LPFC_DEFERRED_RING_EVENT)) {
 573                 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
 574                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
 575                         /* Set the lpfc data pending flag */
 576                         set_bit(LPFC_DATA_READY, &phba->data_flags);
 577                 } else {
 578                         pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
 579                         lpfc_sli_handle_slow_ring_event(phba, pring,
 580                                                         (status &
 581                                                          HA_RXMASK));
 582                 }
 583                 /*
 584                  * Turn on Ring interrupts
 585                  */
 586                 if (phba->sli_rev <= LPFC_SLI_REV3) {
 587                         spin_lock_irq(&phba->hbalock);
 588                         control = readl(phba->HCregaddr);
 589                         if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
 590                                 lpfc_debugfs_slow_ring_trc(phba,
 591                                         "WRK Enable ring: cntl:x%x hacopy:x%x",
 592                                         control, ha_copy, 0);
 593
 594                                 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
 595                                 writel(control, phba->HCregaddr);
 596                                 readl(phba->HCregaddr); /* flush */
 597                         } else {
 598                                 lpfc_debugfs_slow_ring_trc(phba,
 599                                         "WRK Ring ok:     cntl:x%x hacopy:x%x",
 600                                         control, ha_copy, 0);
 601                         }
 602                         spin_unlock_irq(&phba->hbalock);
 603                 }
 604         }
 605         lpfc_work_list_done(phba);
 606 }
 607
 608 int
 609 lpfc_do_work(void *p)
 610 {
 611         struct lpfc_hba *phba = p;
 612         int rc;
 613
 614         set_user_nice(current, -20);
 615         phba->data_flags = 0;
 616
 617         while (!kthread_should_stop()) {
 618                 /* wait and check worker queue activities */
 619                 rc = wait_event_interruptible(phba->work_waitq,
 620                                         (test_and_clear_bit(LPFC_DATA_READY,
 621                                                             &phba->data_flags)
 622                                          || kthread_should_stop()));
 623                 /* Signal wakeup shall terminate the worker thread */
 624                 if (rc) {
 625                         lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
 626                                         "0433 Wakeup on signal: rc=x%x\n", rc);
 627                         break;
 628                 }
 629
 630                 /* Attend pending lpfc data processing */
 631                 lpfc_work_done(phba);
 632         }
 633         phba->worker_thread = NULL;
 634         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
 635                         "0432 Worker thread stopped.\n");
 636         return 0;
 637 }
 638
 639 /*
 640  * This is only called to handle FC worker events. Since this a rare
 641  * occurance, we allocate a struct lpfc_work_evt structure here instead of
 642  * embedding it in the IOCB.
 643  */
 644 int
 645 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
 646                       uint32_t evt)
 647 {
 648         struct lpfc_work_evt  *evtp;
 649         unsigned long flags;
 650
 651         /*
 652          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
 653          * be queued to worker thread for processing
 654          */
 655         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
 656         if (!evtp)
 657                 return 0;
 658
 659         evtp->evt_arg1  = arg1;
 660         evtp->evt_arg2  = arg2;
 661         evtp->evt       = evt;
 662
 663         spin_lock_irqsave(&phba->hbalock, flags);
 664         list_add_tail(&evtp->evt_listp, &phba->work_list);
 665         spin_unlock_irqrestore(&phba->hbalock, flags);
 666
 667         lpfc_worker_wake_up(phba);
 668
 669         return 1;
 670 }
 671
 672 void
 673 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
 674 {
 675         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 676         struct lpfc_hba  *phba = vport->phba;
 677         struct lpfc_nodelist *ndlp, *next_ndlp;
 678         int  rc;
 679
 680         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
 681                 if (!NLP_CHK_NODE_ACT(ndlp))
 682                         continue;
 683                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 684                         continue;
 685                 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
 686                         ((vport->port_type == LPFC_NPIV_PORT) &&
 687                         (ndlp->nlp_DID == NameServer_DID)))
 688                         lpfc_unreg_rpi(vport, ndlp);
 689
 690                 /* Leave Fabric nodes alone on link down */
 691                 if (!remove && ndlp->nlp_type & NLP_FABRIC)
 692                         continue;
 693                 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
 694                                              remove
 695                                              ? NLP_EVT_DEVICE_RM
 696                                              : NLP_EVT_DEVICE_RECOVERY);
 697         }
 698         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
 699                 lpfc_mbx_unreg_vpi(vport);
 700                 spin_lock_irq(shost->host_lock);
 701                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
 702                 spin_unlock_irq(shost->host_lock);
 703         }
 704 }
 705
 706 void
 707 lpfc_port_link_failure(struct lpfc_vport *vport)
 708 {
 709         /* Cleanup any outstanding RSCN activity */
 710         lpfc_els_flush_rscn(vport);
 711
 712         /* Cleanup any outstanding ELS commands */
 713         lpfc_els_flush_cmd(vport);
 714
 715         lpfc_cleanup_rpis(vport, 0);
 716
 717         /* Turn off discovery timer if its running */
 718         lpfc_can_disctmo(vport);
 719 }
 720
 721 void
 722 lpfc_linkdown_port(struct lpfc_vport *vport)
 723 {
 724         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 725
 726         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
 727
 728         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 729                 "Link Down:       state:x%x rtry:x%x flg:x%x",
 730                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
 731
 732         lpfc_port_link_failure(vport);
 733
 734 }
 735
 736 int
 737 lpfc_linkdown(struct lpfc_hba *phba)
 738 {
 739         struct lpfc_vport *vport = phba->pport;
 740         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 741         struct lpfc_vport **vports;
 742         LPFC_MBOXQ_t          *mb;
 743         int i;
 744
 745         if (phba->link_state == LPFC_LINK_DOWN)
 746                 return 0;
 747         spin_lock_irq(&phba->hbalock);
 748         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_DISCOVERED);
 749         if (phba->link_state > LPFC_LINK_DOWN) {
 750                 phba->link_state = LPFC_LINK_DOWN;
 751                 phba->pport->fc_flag &= ~FC_LBIT;
 752         }
 753         spin_unlock_irq(&phba->hbalock);
 754         vports = lpfc_create_vport_work_array(phba);
 755         if (vports != NULL)
 756                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
 757                         /* Issue a LINK DOWN event to all nodes */
 758                         lpfc_linkdown_port(vports[i]);
 759                 }
 760         lpfc_destroy_vport_work_array(phba, vports);
 761         /* Clean up any firmware default rpi's */
 762         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 763         if (mb) {
 764                 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
 765                 mb->vport = vport;
 766                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 767                 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 768                     == MBX_NOT_FINISHED) {
 769                         mempool_free(mb, phba->mbox_mem_pool);
 770                 }
 771         }
 772
 773         /* Setup myDID for link up if we are in pt2pt mode */
 774         if (phba->pport->fc_flag & FC_PT2PT) {
 775                 phba->pport->fc_myDID = 0;
 776                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 777                 if (mb) {
 778                         lpfc_config_link(phba, mb);
 779                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 780                         mb->vport = vport;
 781                         if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
 782                             == MBX_NOT_FINISHED) {
 783                                 mempool_free(mb, phba->mbox_mem_pool);
 784                         }
 785                 }
 786                 spin_lock_irq(shost->host_lock);
 787                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
 788                 spin_unlock_irq(shost->host_lock);
 789         }
 790
 791         return 0;
 792 }
 793
 794 static void
 795 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
 796 {
 797         struct lpfc_nodelist *ndlp;
 798
 799         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
 800                 if (!NLP_CHK_NODE_ACT(ndlp))
 801                         continue;
 802                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
 803                         continue;
 804                 if (ndlp->nlp_type & NLP_FABRIC) {
 805                         /* On Linkup its safe to clean up the ndlp
 806                          * from Fabric connections.
 807                          */
 808                         if (ndlp->nlp_DID != Fabric_DID)
 809                                 lpfc_unreg_rpi(vport, ndlp);
 810                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 811                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
 812                         /* Fail outstanding IO now since device is
 813                          * marked for PLOGI.
 814                          */
 815                         lpfc_unreg_rpi(vport, ndlp);
 816                 }
 817         }
 818 }
 819
 820 static void
 821 lpfc_linkup_port(struct lpfc_vport *vport)
 822 {
 823         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 824         struct lpfc_hba  *phba = vport->phba;
 825
 826         if ((vport->load_flag & FC_UNLOADING) != 0)
 827                 return;
 828
 829         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
 830                 "Link Up:         top:x%x speed:x%x flg:x%x",
 831                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
 832
 833         /* If NPIV is not enabled, only bring the physical port up */
 834         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
 835                 (vport != phba->pport))
 836                 return;
 837
 838         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
 839
 840         spin_lock_irq(shost->host_lock);
 841         vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
 842                             FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
 843         vport->fc_flag |= FC_NDISC_ACTIVE;
 844         vport->fc_ns_retry = 0;
 845         spin_unlock_irq(shost->host_lock);
 846
 847         if (vport->fc_flag & FC_LBIT)
 848                 lpfc_linkup_cleanup_nodes(vport);
 849
 850 }
 851
 852 static int
 853 lpfc_linkup(struct lpfc_hba *phba)
 854 {
 855         struct lpfc_vport **vports;
 856         int i;
 857
 858         phba->link_state = LPFC_LINK_UP;
 859
 860         /* Unblock fabric iocbs if they are blocked */
 861         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
 862         del_timer_sync(&phba->fabric_block_timer);
 863
 864         vports = lpfc_create_vport_work_array(phba);
 865         if (vports != NULL)
 866                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
 867                         lpfc_linkup_port(vports[i]);
 868         lpfc_destroy_vport_work_array(phba, vports);
 869         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
 870             (phba->sli_rev < LPFC_SLI_REV4))
 871                 lpfc_issue_clear_la(phba, phba->pport);
 872
 873         return 0;
 874 }
 875
 876 /*
 877  * This routine handles processing a CLEAR_LA mailbox
 878  * command upon completion. It is setup in the LPFC_MBOXQ
 879  * as the completion routine when the command is
 880  * handed off to the SLI layer.
 881  */
 882 static void
 883 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 884 {
 885         struct lpfc_vport *vport = pmb->vport;
 886         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 887         struct lpfc_sli   *psli = &phba->sli;
 888         MAILBOX_t *mb = &pmb->u.mb;
 889         uint32_t control;
 890
 891         /* Since we don't do discovery right now, turn these off here */
 892         psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 893         psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 894         psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
 895
 896         /* Check for error */
 897         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
 898                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
 899                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 900                                  "0320 CLEAR_LA mbxStatus error x%x hba "
 901                                  "state x%x\n",
 902                                  mb->mbxStatus, vport->port_state);
 903                 phba->link_state = LPFC_HBA_ERROR;
 904                 goto out;
 905         }
 906
 907         if (vport->port_type == LPFC_PHYSICAL_PORT)
 908                 phba->link_state = LPFC_HBA_READY;
 909
 910         spin_lock_irq(&phba->hbalock);
 911         psli->sli_flag |= LPFC_PROCESS_LA;
 912         control = readl(phba->HCregaddr);
 913         control |= HC_LAINT_ENA;
 914         writel(control, phba->HCregaddr);
 915         readl(phba->HCregaddr); /* flush */
 916         spin_unlock_irq(&phba->hbalock);
 917         mempool_free(pmb, phba->mbox_mem_pool);
 918         return;
 919
 920 out:
 921         /* Device Discovery completes */
 922         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
 923                          "0225 Device Discovery completes\n");
 924         mempool_free(pmb, phba->mbox_mem_pool);
 925
 926         spin_lock_irq(shost->host_lock);
 927         vport->fc_flag &= ~FC_ABORT_DISCOVERY;
 928         spin_unlock_irq(shost->host_lock);
 929
 930         lpfc_can_disctmo(vport);
 931
 932         /* turn on Link Attention interrupts */
 933
 934         spin_lock_irq(&phba->hbalock);
 935         psli->sli_flag |= LPFC_PROCESS_LA;
 936         control = readl(phba->HCregaddr);
 937         control |= HC_LAINT_ENA;
 938         writel(control, phba->HCregaddr);
 939         readl(phba->HCregaddr); /* flush */
 940         spin_unlock_irq(&phba->hbalock);
 941
 942         return;
 943 }
 944
 945
 946 static void
 947 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 948 {
 949         struct lpfc_vport *vport = pmb->vport;
 950
 951         if (pmb->u.mb.mbxStatus)
 952                 goto out;
 953
 954         mempool_free(pmb, phba->mbox_mem_pool);
 955
 956         if (phba->fc_topology == TOPOLOGY_LOOP &&
 957             vport->fc_flag & FC_PUBLIC_LOOP &&
 958             !(vport->fc_flag & FC_LBIT)) {
 959                         /* Need to wait for FAN - use discovery timer
 960                          * for timeout.  port_state is identically
 961                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
 962                          */
 963                         lpfc_set_disctmo(vport);
 964                         return;
 965         }
 966
 967         /* Start discovery by sending a FLOGI. port_state is identically
 968          * LPFC_FLOGI while waiting for FLOGI cmpl
 969          */
 970         if (vport->port_state != LPFC_FLOGI) {
 971                 lpfc_initial_flogi(vport);
 972         }
 973         return;
 974
 975 out:
 976         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 977                          "0306 CONFIG_LINK mbxStatus error x%x "
 978                          "HBA state x%x\n",
 979                          pmb->u.mb.mbxStatus, vport->port_state);
 980         mempool_free(pmb, phba->mbox_mem_pool);
 981
 982         lpfc_linkdown(phba);
 983
 984         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
 985                          "0200 CONFIG_LINK bad hba state x%x\n",
 986                          vport->port_state);
 987
 988         lpfc_issue_clear_la(phba, vport);
 989         return;
 990 }
 991
 992 static void
 993 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 994 {
 995         struct lpfc_vport *vport = mboxq->vport;
 996         unsigned long flags;
 997
 998         if (mboxq->u.mb.mbxStatus) {
 999                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1000                          "2017 REG_FCFI mbxStatus error x%x "
1001                          "HBA state x%x\n",
1002                          mboxq->u.mb.mbxStatus, vport->port_state);
1003                 mempool_free(mboxq, phba->mbox_mem_pool);
1004                 return;
1005         }
1006
1007         /* Start FCoE discovery by sending a FLOGI. */
1008         phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1009         /* Set the FCFI registered flag */
1010         spin_lock_irqsave(&phba->hbalock, flags);
1011         phba->fcf.fcf_flag |= FCF_REGISTERED;
1012         spin_unlock_irqrestore(&phba->hbalock, flags);
1013         /* If there is a pending FCoE event, restart FCF table scan. */
1014         if (lpfc_check_pending_fcoe_event(phba, 1)) {
1015                 mempool_free(mboxq, phba->mbox_mem_pool);
1016                 return;
1017         }
1018         if (vport->port_state != LPFC_FLOGI) {
1019                 spin_lock_irqsave(&phba->hbalock, flags);
1020                 phba->fcf.fcf_flag |= (FCF_DISCOVERED | FCF_IN_USE);
1021                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1022                 spin_unlock_irqrestore(&phba->hbalock, flags);
1023                 lpfc_initial_flogi(vport);
1024         }
1025
1026         mempool_free(mboxq, phba->mbox_mem_pool);
1027         return;
1028 }
1029
1030 /**
1031  * lpfc_fab_name_match - Check if the fcf fabric name match.
1032  * @fab_name: pointer to fabric name.
1033  * @new_fcf_record: pointer to fcf record.
1034  *
1035  * This routine compare the fcf record's fabric name with provided
1036  * fabric name. If the fabric name are identical this function
1037  * returns 1 else return 0.
1038  **/
1039 static uint32_t
1040 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1041 {
1042         if ((fab_name[0] ==
1043                 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record)) &&
1044             (fab_name[1] ==
1045                 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record)) &&
1046             (fab_name[2] ==
1047                 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record)) &&
1048             (fab_name[3] ==
1049                 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record)) &&
1050             (fab_name[4] ==
1051                 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record)) &&
1052             (fab_name[5] ==
1053                 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record)) &&
1054             (fab_name[6] ==
1055                 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record)) &&
1056             (fab_name[7] ==
1057                 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record)))
1058                 return 1;
1059         else
1060                 return 0;
1061 }
1062
1063 /**
1064  * lpfc_sw_name_match - Check if the fcf switch name match.
1065  * @fab_name: pointer to fabric name.
1066  * @new_fcf_record: pointer to fcf record.
1067  *
1068  * This routine compare the fcf record's switch name with provided
1069  * switch name. If the switch name are identical this function
1070  * returns 1 else return 0.
1071  **/
1072 static uint32_t
1073 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1074 {
1075         if ((sw_name[0] ==
1076                 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record)) &&
1077             (sw_name[1] ==
1078                 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record)) &&
1079             (sw_name[2] ==
1080                 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record)) &&
1081             (sw_name[3] ==
1082                 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record)) &&
1083             (sw_name[4] ==
1084                 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record)) &&
1085             (sw_name[5] ==
1086                 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record)) &&
1087             (sw_name[6] ==
1088                 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record)) &&
1089             (sw_name[7] ==
1090                 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record)))
1091                 return 1;
1092         else
1093                 return 0;
1094 }
1095
1096 /**
1097  * lpfc_mac_addr_match - Check if the fcf mac address match.
1098  * @phba: pointer to lpfc hba data structure.
1099  * @new_fcf_record: pointer to fcf record.
1100  *
1101  * This routine compare the fcf record's mac address with HBA's
1102  * FCF mac address. If the mac addresses are identical this function
1103  * returns 1 else return 0.
1104  **/
1105 static uint32_t
1106 lpfc_mac_addr_match(struct lpfc_hba *phba, struct fcf_record *new_fcf_record)
1107 {
1108         if ((phba->fcf.mac_addr[0] ==
1109                 bf_get(lpfc_fcf_record_mac_0, new_fcf_record)) &&
1110             (phba->fcf.mac_addr[1] ==
1111                 bf_get(lpfc_fcf_record_mac_1, new_fcf_record)) &&
1112             (phba->fcf.mac_addr[2] ==
1113                 bf_get(lpfc_fcf_record_mac_2, new_fcf_record)) &&
1114             (phba->fcf.mac_addr[3] ==
1115                 bf_get(lpfc_fcf_record_mac_3, new_fcf_record)) &&
1116             (phba->fcf.mac_addr[4] ==
1117                 bf_get(lpfc_fcf_record_mac_4, new_fcf_record)) &&
1118             (phba->fcf.mac_addr[5] ==
1119                 bf_get(lpfc_fcf_record_mac_5, new_fcf_record)))
1120                 return 1;
1121         else
1122                 return 0;
1123 }
1124
1125 /**
1126  * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1127  * @phba: pointer to lpfc hba data structure.
1128  * @new_fcf_record: pointer to fcf record.
1129  *
1130  * This routine copies the FCF information from the FCF
1131  * record to lpfc_hba data structure.
1132  **/
1133 static void
1134 lpfc_copy_fcf_record(struct lpfc_hba *phba, struct fcf_record *new_fcf_record)
1135 {
1136         phba->fcf.fabric_name[0] =
1137                 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1138         phba->fcf.fabric_name[1] =
1139                 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1140         phba->fcf.fabric_name[2] =
1141                 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1142         phba->fcf.fabric_name[3] =
1143                 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1144         phba->fcf.fabric_name[4] =
1145                 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1146         phba->fcf.fabric_name[5] =
1147                 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1148         phba->fcf.fabric_name[6] =
1149                 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1150         phba->fcf.fabric_name[7] =
1151                 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1152         phba->fcf.mac_addr[0] =
1153                 bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1154         phba->fcf.mac_addr[1] =
1155                 bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1156         phba->fcf.mac_addr[2] =
1157                 bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1158         phba->fcf.mac_addr[3] =
1159                 bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1160         phba->fcf.mac_addr[4] =
1161                 bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1162         phba->fcf.mac_addr[5] =
1163                 bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1164         phba->fcf.fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1165         phba->fcf.priority = new_fcf_record->fip_priority;
1166         phba->fcf.switch_name[0] =
1167                 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1168         phba->fcf.switch_name[1] =
1169                 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1170         phba->fcf.switch_name[2] =
1171                 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1172         phba->fcf.switch_name[3] =
1173                 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1174         phba->fcf.switch_name[4] =
1175                 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1176         phba->fcf.switch_name[5] =
1177                 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1178         phba->fcf.switch_name[6] =
1179                 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1180         phba->fcf.switch_name[7] =
1181                 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1182 }
1183
1184 /**
1185  * lpfc_register_fcf - Register the FCF with hba.
1186  * @phba: pointer to lpfc hba data structure.
1187  *
1188  * This routine issues a register fcfi mailbox command to register
1189  * the fcf with HBA.
1190  **/
1191 static void
1192 lpfc_register_fcf(struct lpfc_hba *phba)
1193 {
1194         LPFC_MBOXQ_t *fcf_mbxq;
1195         int rc;
1196         unsigned long flags;
1197
1198         spin_lock_irqsave(&phba->hbalock, flags);
1199
1200         /* If the FCF is not availabe do nothing. */
1201         if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1202                 spin_unlock_irqrestore(&phba->hbalock, flags);
1203                 return;
1204         }
1205
1206         /* The FCF is already registered, start discovery */
1207         if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1208                 phba->fcf.fcf_flag |= (FCF_DISCOVERED | FCF_IN_USE);
1209                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1210                 spin_unlock_irqrestore(&phba->hbalock, flags);
1211                 if (phba->pport->port_state != LPFC_FLOGI)
1212                         lpfc_initial_flogi(phba->pport);
1213                 return;
1214         }
1215         spin_unlock_irqrestore(&phba->hbalock, flags);
1216
1217         fcf_mbxq = mempool_alloc(phba->mbox_mem_pool,
1218                 GFP_KERNEL);
1219         if (!fcf_mbxq)
1220                 return;
1221
1222         lpfc_reg_fcfi(phba, fcf_mbxq);
1223         fcf_mbxq->vport = phba->pport;
1224         fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1225         rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1226         if (rc == MBX_NOT_FINISHED)
1227                 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1228
1229         return;
1230 }
1231
1232 /**
1233  * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1234  * @phba: pointer to lpfc hba data structure.
1235  * @new_fcf_record: pointer to fcf record.
1236  * @boot_flag: Indicates if this record used by boot bios.
1237  * @addr_mode: The address mode to be used by this FCF
1238  *
1239  * This routine compare the fcf record with connect list obtained from the
1240  * config region to decide if this FCF can be used for SAN discovery. It returns
1241  * 1 if this record can be used for SAN discovery else return zero. If this FCF
1242  * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1243  * is used by boot bios and addr_mode will indicate the addressing mode to be
1244  * used for this FCF when the function returns.
1245  * If the FCF record need to be used with a particular vlan id, the vlan is
1246  * set in the vlan_id on return of the function. If not VLAN tagging need to
1247  * be used with the FCF vlan_id will be set to 0xFFFF;
1248  **/
1249 static int
1250 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1251                         struct fcf_record *new_fcf_record,
1252                         uint32_t *boot_flag, uint32_t *addr_mode,
1253                         uint16_t *vlan_id)
1254 {
1255         struct lpfc_fcf_conn_entry *conn_entry;
1256
1257         /* If FCF not available return 0 */
1258         if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1259                 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record))
1260                 return 0;
1261
1262         if (!phba->cfg_enable_fip) {
1263                 *boot_flag = 0;
1264                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1265                                 new_fcf_record);
1266                 if (phba->valid_vlan)
1267                         *vlan_id = phba->vlan_id;
1268                 else
1269                         *vlan_id = 0xFFFF;
1270                 return 1;
1271         }
1272
1273         /*
1274          * If there are no FCF connection table entry, driver connect to all
1275          * FCFs.
1276          */
1277         if (list_empty(&phba->fcf_conn_rec_list)) {
1278                 *boot_flag = 0;
1279                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1280                         new_fcf_record);
1281
1282                 /*
1283                  * When there are no FCF connect entries, use driver's default
1284                  * addressing mode - FPMA.
1285                  */
1286                 if (*addr_mode & LPFC_FCF_FPMA)
1287                         *addr_mode = LPFC_FCF_FPMA;
1288
1289                 *vlan_id = 0xFFFF;
1290                 return 1;
1291         }
1292
1293         list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list, list) {
1294                 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
1295                         continue;
1296
1297                 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
1298                         !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
1299                                              new_fcf_record))
1300                         continue;
1301                 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
1302                         !lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
1303                                             new_fcf_record))
1304                         continue;
1305                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
1306                         /*
1307                          * If the vlan bit map does not have the bit set for the
1308                          * vlan id to be used, then it is not a match.
1309                          */
1310                         if (!(new_fcf_record->vlan_bitmap
1311                                 [conn_entry->conn_rec.vlan_tag / 8] &
1312                                 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
1313                                 continue;
1314                 }
1315
1316                 /*
1317                  * If connection record does not support any addressing mode,
1318                  * skip the FCF record.
1319                  */
1320                 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
1321                         & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
1322                         continue;
1323
1324                 /*
1325                  * Check if the connection record specifies a required
1326                  * addressing mode.
1327                  */
1328                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1329                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
1330
1331                         /*
1332                          * If SPMA required but FCF not support this continue.
1333                          */
1334                         if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1335                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1336                                         new_fcf_record) & LPFC_FCF_SPMA))
1337                                 continue;
1338
1339                         /*
1340                          * If FPMA required but FCF not support this continue.
1341                          */
1342                         if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1343                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1344                                 new_fcf_record) & LPFC_FCF_FPMA))
1345                                 continue;
1346                 }
1347
1348                 /*
1349                  * This fcf record matches filtering criteria.
1350                  */
1351                 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
1352                         *boot_flag = 1;
1353                 else
1354                         *boot_flag = 0;
1355
1356                 /*
1357                  * If user did not specify any addressing mode, or if the
1358                  * prefered addressing mode specified by user is not supported
1359                  * by FCF, allow fabric to pick the addressing mode.
1360                  */
1361                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1362                                 new_fcf_record);
1363                 /*
1364                  * If the user specified a required address mode, assign that
1365                  * address mode
1366                  */
1367                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1368                         (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
1369                         *addr_mode = (conn_entry->conn_rec.flags &
1370                                 FCFCNCT_AM_SPMA) ?
1371                                 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
1372                 /*
1373                  * If the user specified a prefered address mode, use the
1374                  * addr mode only if FCF support the addr_mode.
1375                  */
1376                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1377                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1378                         (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1379                         (*addr_mode & LPFC_FCF_SPMA))
1380                                 *addr_mode = LPFC_FCF_SPMA;
1381                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1382                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1383                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1384                         (*addr_mode & LPFC_FCF_FPMA))
1385                                 *addr_mode = LPFC_FCF_FPMA;
1386
1387                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
1388                         *vlan_id = conn_entry->conn_rec.vlan_tag;
1389                 else
1390                         *vlan_id = 0xFFFF;
1391
1392                 return 1;
1393         }
1394
1395         return 0;
1396 }
1397
1398 /**
1399  * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
1400  * @phba: pointer to lpfc hba data structure.
1401  * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
1402  *
1403  * This function check if there is any fcoe event pending while driver
1404  * scan FCF entries. If there is any pending event, it will restart the
1405  * FCF saning and return 1 else return 0.
1406  */
1407 int
1408 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
1409 {
1410         LPFC_MBOXQ_t *mbox;
1411         int rc;
1412         /*
1413          * If the Link is up and no FCoE events while in the
1414          * FCF discovery, no need to restart FCF discovery.
1415          */
1416         if ((phba->link_state  >= LPFC_LINK_UP) &&
1417                 (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
1418                 return 0;
1419
1420         spin_lock_irq(&phba->hbalock);
1421         phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
1422         spin_unlock_irq(&phba->hbalock);
1423
1424         if (phba->link_state >= LPFC_LINK_UP)
1425                 lpfc_sli4_read_fcf_record(phba, LPFC_FCOE_FCF_GET_FIRST);
1426
1427         if (unreg_fcf) {
1428                 spin_lock_irq(&phba->hbalock);
1429                 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
1430                 spin_unlock_irq(&phba->hbalock);
1431                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1432                 if (!mbox) {
1433                         lpfc_printf_log(phba, KERN_ERR,
1434                                 LOG_DISCOVERY|LOG_MBOX,
1435                                 "2610 UNREG_FCFI mbox allocation failed\n");
1436                         return 1;
1437                 }
1438                 lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
1439                 mbox->vport = phba->pport;
1440                 mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
1441                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1442                 if (rc == MBX_NOT_FINISHED) {
1443                         lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
1444                                 "2611 UNREG_FCFI issue mbox failed\n");
1445                         mempool_free(mbox, phba->mbox_mem_pool);
1446                 }
1447         }
1448
1449         return 1;
1450 }
1451
1452 /**
1453  * lpfc_mbx_cmpl_read_fcf_record - Completion handler for read_fcf mbox.
1454  * @phba: pointer to lpfc hba data structure.
1455  * @mboxq: pointer to mailbox object.
1456  *
1457  * This function iterate through all the fcf records available in
1458  * HBA and choose the optimal FCF record for discovery. After finding
1459  * the FCF for discovery it register the FCF record and kick start
1460  * discovery.
1461  * If FCF_IN_USE flag is set in currently used FCF, the routine try to
1462  * use a FCF record which match fabric name and mac address of the
1463  * currently used FCF record.
1464  * If the driver support only one FCF, it will try to use the FCF record
1465  * used by BOOT_BIOS.
1466  */
1467 void
1468 lpfc_mbx_cmpl_read_fcf_record(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1469 {
1470         void *virt_addr;
1471         dma_addr_t phys_addr;
1472         uint8_t *bytep;
1473         struct lpfc_mbx_sge sge;
1474         struct lpfc_mbx_read_fcf_tbl *read_fcf;
1475         uint32_t shdr_status, shdr_add_status;
1476         union lpfc_sli4_cfg_shdr *shdr;
1477         struct fcf_record *new_fcf_record;
1478         int rc;
1479         uint32_t boot_flag, addr_mode;
1480         uint32_t next_fcf_index;
1481         unsigned long flags;
1482         uint16_t vlan_id;
1483
1484         /* If there is pending FCoE event restart FCF table scan */
1485         if (lpfc_check_pending_fcoe_event(phba, 0)) {
1486                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
1487                 return;
1488         }
1489
1490         /* Get the first SGE entry from the non-embedded DMA memory. This
1491          * routine only uses a single SGE.
1492          */
1493         lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
1494         phys_addr = getPaddr(sge.pa_hi, sge.pa_lo);
1495         if (unlikely(!mboxq->sge_array)) {
1496                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1497                                 "2524 Failed to get the non-embedded SGE "
1498                                 "virtual address\n");
1499                 goto out;
1500         }
1501         virt_addr = mboxq->sge_array->addr[0];
1502
1503         shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
1504         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
1505         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
1506                                  &shdr->response);
1507         /*
1508          * The FCF Record was read and there is no reason for the driver
1509          * to maintain the FCF record data or memory. Instead, just need
1510          * to book keeping the FCFIs can be used.
1511          */
1512         if (shdr_status || shdr_add_status) {
1513                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1514                                 "2521 READ_FCF_RECORD mailbox failed "
1515                                 "with status x%x add_status x%x, mbx\n",
1516                                 shdr_status, shdr_add_status);
1517                 goto out;
1518         }
1519         /* Interpreting the returned information of FCF records */
1520         read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
1521         lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
1522                               sizeof(struct lpfc_mbx_read_fcf_tbl));
1523         next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
1524
1525         new_fcf_record = (struct fcf_record *)(virt_addr +
1526                           sizeof(struct lpfc_mbx_read_fcf_tbl));
1527         lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
1528                               sizeof(struct fcf_record));
1529         bytep = virt_addr + sizeof(union lpfc_sli4_cfg_shdr);
1530
1531         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record,
1532                                       &boot_flag, &addr_mode,
1533                                         &vlan_id);
1534         /*
1535          * If the fcf record does not match with connect list entries
1536          * read the next entry.
1537          */
1538         if (!rc)
1539                 goto read_next_fcf;
1540         /*
1541          * If this is not the first FCF discovery of the HBA, use last
1542          * FCF record for the discovery.
1543          */
1544         spin_lock_irqsave(&phba->hbalock, flags);
1545         if (phba->fcf.fcf_flag & FCF_IN_USE) {
1546                 if (lpfc_fab_name_match(phba->fcf.fabric_name,
1547                                         new_fcf_record) &&
1548                     lpfc_sw_name_match(phba->fcf.switch_name,
1549                                         new_fcf_record) &&
1550                     lpfc_mac_addr_match(phba, new_fcf_record)) {
1551                         phba->fcf.fcf_flag |= FCF_AVAILABLE;
1552                         spin_unlock_irqrestore(&phba->hbalock, flags);
1553                         goto out;
1554                 }
1555                 spin_unlock_irqrestore(&phba->hbalock, flags);
1556                 goto read_next_fcf;
1557         }
1558         if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
1559                 /*
1560                  * If the current FCF record does not have boot flag
1561                  * set and new fcf record has boot flag set, use the
1562                  * new fcf record.
1563                  */
1564                 if (boot_flag && !(phba->fcf.fcf_flag & FCF_BOOT_ENABLE)) {
1565                         /* Use this FCF record */
1566                         lpfc_copy_fcf_record(phba, new_fcf_record);
1567                         phba->fcf.addr_mode = addr_mode;
1568                         phba->fcf.fcf_flag |= FCF_BOOT_ENABLE;
1569                         if (vlan_id != 0xFFFF) {
1570                                 phba->fcf.fcf_flag |= FCF_VALID_VLAN;
1571                                 phba->fcf.vlan_id = vlan_id;
1572                         }
1573                         spin_unlock_irqrestore(&phba->hbalock, flags);
1574                         goto read_next_fcf;
1575                 }
1576                 /*
1577                  * If the current FCF record has boot flag set and the
1578                  * new FCF record does not have boot flag, read the next
1579                  * FCF record.
1580                  */
1581                 if (!boot_flag && (phba->fcf.fcf_flag & FCF_BOOT_ENABLE)) {
1582                         spin_unlock_irqrestore(&phba->hbalock, flags);
1583                         goto read_next_fcf;
1584                 }
1585                 /*
1586                  * If there is a record with lower priority value for
1587                  * the current FCF, use that record.
1588                  */
1589                 if (lpfc_fab_name_match(phba->fcf.fabric_name,
1590                                         new_fcf_record) &&
1591                     (new_fcf_record->fip_priority < phba->fcf.priority)) {
1592                         /* Use this FCF record */
1593                         lpfc_copy_fcf_record(phba, new_fcf_record);
1594                         phba->fcf.addr_mode = addr_mode;
1595                         if (vlan_id != 0xFFFF) {
1596                                 phba->fcf.fcf_flag |= FCF_VALID_VLAN;
1597                                 phba->fcf.vlan_id = vlan_id;
1598                         }
1599                         spin_unlock_irqrestore(&phba->hbalock, flags);
1600                         goto read_next_fcf;
1601                 }
1602                 spin_unlock_irqrestore(&phba->hbalock, flags);
1603                 goto read_next_fcf;
1604         }
1605         /*
1606          * This is the first available FCF record, use this
1607          * record.
1608          */
1609         lpfc_copy_fcf_record(phba, new_fcf_record);
1610         phba->fcf.addr_mode = addr_mode;
1611         if (boot_flag)
1612                 phba->fcf.fcf_flag |= FCF_BOOT_ENABLE;
1613         phba->fcf.fcf_flag |= FCF_AVAILABLE;
1614         if (vlan_id != 0xFFFF) {
1615                 phba->fcf.fcf_flag |= FCF_VALID_VLAN;
1616                 phba->fcf.vlan_id = vlan_id;
1617         }
1618         spin_unlock_irqrestore(&phba->hbalock, flags);
1619         goto read_next_fcf;
1620
1621 read_next_fcf:
1622         lpfc_sli4_mbox_cmd_free(phba, mboxq);
1623         if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0)
1624                 lpfc_register_fcf(phba);
1625         else
1626                 lpfc_sli4_read_fcf_record(phba, next_fcf_index);
1627         return;
1628
1629 out:
1630         lpfc_sli4_mbox_cmd_free(phba, mboxq);
1631         lpfc_register_fcf(phba);
1632
1633         return;
1634 }
1635
1636 /**
1637  * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
1638  * @phba: pointer to lpfc hba data structure.
1639  * @mboxq: pointer to mailbox data structure.
1640  *
1641  * This function handles completion of init vpi mailbox command.
1642  */
1643 static void
1644 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1645 {
1646         struct lpfc_vport *vport = mboxq->vport;
1647         if (mboxq->u.mb.mbxStatus) {
1648                 lpfc_printf_vlog(vport, KERN_ERR,
1649                                 LOG_MBOX,
1650                                 "2609 Init VPI mailbox failed 0x%x\n",
1651                                 mboxq->u.mb.mbxStatus);
1652                 mempool_free(mboxq, phba->mbox_mem_pool);
1653                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1654                 return;
1655         }
1656         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
1657
1658         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1659                 lpfc_initial_fdisc(vport);
1660         else {
1661                 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
1662                 lpfc_printf_vlog(vport, KERN_ERR,
1663                         LOG_ELS,
1664                         "2606 No NPIV Fabric support\n");
1665         }
1666         return;
1667 }
1668
1669 /**
1670  * lpfc_start_fdiscs - send fdiscs for each vports on this port.
1671  * @phba: pointer to lpfc hba data structure.
1672  *
1673  * This function loops through the list of vports on the @phba and issues an
1674  * FDISC if possible.
1675  */
1676 void
1677 lpfc_start_fdiscs(struct lpfc_hba *phba)
1678 {
1679         struct lpfc_vport **vports;
1680         int i;
1681         LPFC_MBOXQ_t *mboxq;
1682         int rc;
1683
1684         vports = lpfc_create_vport_work_array(phba);
1685         if (vports != NULL) {
1686                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
1687                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
1688                                 continue;
1689                         /* There are no vpi for this vport */
1690                         if (vports[i]->vpi > phba->max_vpi) {
1691                                 lpfc_vport_set_state(vports[i],
1692                                                      FC_VPORT_FAILED);
1693                                 continue;
1694                         }
1695                         if (phba->fc_topology == TOPOLOGY_LOOP) {
1696                                 lpfc_vport_set_state(vports[i],
1697                                                      FC_VPORT_LINKDOWN);
1698                                 continue;
1699                         }
1700                         if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
1701                                 mboxq = mempool_alloc(phba->mbox_mem_pool,
1702                                         GFP_KERNEL);
1703                                 if (!mboxq) {
1704                                         lpfc_printf_vlog(vports[i], KERN_ERR,
1705                                         LOG_MBOX, "2607 Failed to allocate "
1706                                         "init_vpi mailbox\n");
1707                                         continue;
1708                                 }
1709                                 lpfc_init_vpi(phba, mboxq, vports[i]->vpi);
1710                                 mboxq->vport = vports[i];
1711                                 mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
1712                                 rc = lpfc_sli_issue_mbox(phba, mboxq,
1713                                         MBX_NOWAIT);
1714                                 if (rc == MBX_NOT_FINISHED) {
1715                                         lpfc_printf_vlog(vports[i], KERN_ERR,
1716                                         LOG_MBOX, "2608 Failed to issue "
1717                                         "init_vpi mailbox\n");
1718                                         mempool_free(mboxq,
1719                                                 phba->mbox_mem_pool);
1720                                 }
1721                                 continue;
1722                         }
1723                         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1724                                 lpfc_initial_fdisc(vports[i]);
1725                         else {
1726                                 lpfc_vport_set_state(vports[i],
1727                                                      FC_VPORT_NO_FABRIC_SUPP);
1728                                 lpfc_printf_vlog(vports[i], KERN_ERR,
1729                                                  LOG_ELS,
1730                                                  "0259 No NPIV "
1731                                                  "Fabric support\n");
1732                         }
1733                 }
1734         }
1735         lpfc_destroy_vport_work_array(phba, vports);
1736 }
1737
1738 void
1739 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1740 {
1741         struct lpfc_dmabuf *dmabuf = mboxq->context1;
1742         struct lpfc_vport *vport = mboxq->vport;
1743
1744         if (mboxq->u.mb.mbxStatus) {
1745                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1746                          "2018 REG_VFI mbxStatus error x%x "
1747                          "HBA state x%x\n",
1748                          mboxq->u.mb.mbxStatus, vport->port_state);
1749                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1750                         /* FLOGI failed, use loop map to make discovery list */
1751                         lpfc_disc_list_loopmap(vport);
1752                         /* Start discovery */
1753                         lpfc_disc_start(vport);
1754                         goto fail_free_mem;
1755                 }
1756                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1757                 goto fail_free_mem;
1758         }
1759         /* Mark the vport has registered with its VFI */
1760         vport->vfi_state |= LPFC_VFI_REGISTERED;
1761
1762         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
1763                 lpfc_start_fdiscs(phba);
1764                 lpfc_do_scr_ns_plogi(phba, vport);
1765         }
1766
1767 fail_free_mem:
1768         mempool_free(mboxq, phba->mbox_mem_pool);
1769         lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
1770         kfree(dmabuf);
1771         return;
1772 }
1773
1774 static void
1775 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1776 {
1777         MAILBOX_t *mb = &pmb->u.mb;
1778         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
1779         struct lpfc_vport  *vport = pmb->vport;
1780
1781
1782         /* Check for error */
1783         if (mb->mbxStatus) {
1784                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
1785                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1786                                  "0319 READ_SPARAM mbxStatus error x%x "
1787                                  "hba state x%x>\n",
1788                                  mb->mbxStatus, vport->port_state);
1789                 lpfc_linkdown(phba);
1790                 goto out;
1791         }
1792
1793         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
1794                sizeof (struct serv_parm));
1795         if (phba->cfg_soft_wwnn)
1796                 u64_to_wwn(phba->cfg_soft_wwnn,
1797                            vport->fc_sparam.nodeName.u.wwn);
1798         if (phba->cfg_soft_wwpn)
1799                 u64_to_wwn(phba->cfg_soft_wwpn,
1800                            vport->fc_sparam.portName.u.wwn);
1801         memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
1802                sizeof(vport->fc_nodename));
1803         memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
1804                sizeof(vport->fc_portname));
1805         if (vport->port_type == LPFC_PHYSICAL_PORT) {
1806                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
1807                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
1808         }
1809
1810         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1811         kfree(mp);
1812         mempool_free(pmb, phba->mbox_mem_pool);
1813         return;
1814
1815 out:
1816         pmb->context1 = NULL;
1817         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1818         kfree(mp);
1819         lpfc_issue_clear_la(phba, vport);
1820         mempool_free(pmb, phba->mbox_mem_pool);
1821         return;
1822 }
1823
1824 static void
1825 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
1826 {
1827         struct lpfc_vport *vport = phba->pport;
1828         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
1829         int i;
1830         struct lpfc_dmabuf *mp;
1831         int rc;
1832         struct fcf_record *fcf_record;
1833
1834         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1835
1836         spin_lock_irq(&phba->hbalock);
1837         switch (la->UlnkSpeed) {
1838         case LA_1GHZ_LINK:
1839                 phba->fc_linkspeed = LA_1GHZ_LINK;
1840                 break;
1841         case LA_2GHZ_LINK:
1842                 phba->fc_linkspeed = LA_2GHZ_LINK;
1843                 break;
1844         case LA_4GHZ_LINK:
1845                 phba->fc_linkspeed = LA_4GHZ_LINK;
1846                 break;
1847         case LA_8GHZ_LINK:
1848                 phba->fc_linkspeed = LA_8GHZ_LINK;
1849                 break;
1850         case LA_10GHZ_LINK:
1851                 phba->fc_linkspeed = LA_10GHZ_LINK;
1852                 break;
1853         default:
1854                 phba->fc_linkspeed = LA_UNKNW_LINK;
1855                 break;
1856         }
1857
1858         phba->fc_topology = la->topology;
1859         phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
1860
1861         if (phba->fc_topology == TOPOLOGY_LOOP) {
1862                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
1863
1864                 if (phba->cfg_enable_npiv)
1865                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1866                                 "1309 Link Up Event npiv not supported in loop "
1867                                 "topology\n");
1868                                 /* Get Loop Map information */
1869                 if (la->il)
1870                         vport->fc_flag |= FC_LBIT;
1871
1872                 vport->fc_myDID = la->granted_AL_PA;
1873                 i = la->un.lilpBde64.tus.f.bdeSize;
1874
1875                 if (i == 0) {
1876                         phba->alpa_map[0] = 0;
1877                 } else {
1878                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
1879                                 int numalpa, j, k;
1880                                 union {
1881                                         uint8_t pamap[16];
1882                                         struct {
1883                                                 uint32_t wd1;
1884                                                 uint32_t wd2;
1885                                                 uint32_t wd3;
1886                                                 uint32_t wd4;
1887                                         } pa;
1888                                 } un;
1889                                 numalpa = phba->alpa_map[0];
1890                                 j = 0;
1891                                 while (j < numalpa) {
1892                                         memset(un.pamap, 0, 16);
1893                                         for (k = 1; j < numalpa; k++) {
1894                                                 un.pamap[k - 1] =
1895                                                         phba->alpa_map[j + 1];
1896                                                 j++;
1897                                                 if (k == 16)
1898                                                         break;
1899                                         }
1900                                         /* Link Up Event ALPA map */
1901                                         lpfc_printf_log(phba,
1902                                                         KERN_WARNING,
1903                                                         LOG_LINK_EVENT,
1904                                                         "1304 Link Up Event "
1905                                                         "ALPA map Data: x%x "
1906                                                         "x%x x%x x%x\n",
1907                                                         un.pa.wd1, un.pa.wd2,
1908                                                         un.pa.wd3, un.pa.wd4);
1909                                 }
1910                         }
1911                 }
1912         } else {
1913                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
1914                         if (phba->max_vpi && phba->cfg_enable_npiv &&
1915                            (phba->sli_rev == 3))
1916                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
1917                 }
1918                 vport->fc_myDID = phba->fc_pref_DID;
1919                 vport->fc_flag |= FC_LBIT;
1920         }
1921         spin_unlock_irq(&phba->hbalock);
1922
1923         lpfc_linkup(phba);
1924         if (sparam_mbox) {
1925                 lpfc_read_sparam(phba, sparam_mbox, 0);
1926                 sparam_mbox->vport = vport;
1927                 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1928                 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
1929                 if (rc == MBX_NOT_FINISHED) {
1930                         mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
1931                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1932                         kfree(mp);
1933                         mempool_free(sparam_mbox, phba->mbox_mem_pool);
1934                         goto out;
1935                 }
1936         }
1937
1938         if (!(phba->hba_flag & HBA_FCOE_SUPPORT)) {
1939                 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1940                 if (!cfglink_mbox)
1941                         goto out;
1942                 vport->port_state = LPFC_LOCAL_CFG_LINK;
1943                 lpfc_config_link(phba, cfglink_mbox);
1944                 cfglink_mbox->vport = vport;
1945                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
1946                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
1947                 if (rc == MBX_NOT_FINISHED) {
1948                         mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1949                         goto out;
1950                 }
1951         } else {
1952                 vport->port_state = LPFC_VPORT_UNKNOWN;
1953                 /*
1954                  * Add the driver's default FCF record at FCF index 0 now. This
1955                  * is phase 1 implementation that support FCF index 0 and driver
1956                  * defaults.
1957                  */
1958                 if (phba->cfg_enable_fip == 0) {
1959                         fcf_record = kzalloc(sizeof(struct fcf_record),
1960                                         GFP_KERNEL);
1961                         if (unlikely(!fcf_record)) {
1962                                 lpfc_printf_log(phba, KERN_ERR,
1963                                         LOG_MBOX | LOG_SLI,
1964                                         "2554 Could not allocate memmory for "
1965                                         "fcf record\n");
1966                                 rc = -ENODEV;
1967                                 goto out;
1968                         }
1969
1970                         lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
1971                                                 LPFC_FCOE_FCF_DEF_INDEX);
1972                         rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
1973                         if (unlikely(rc)) {
1974                                 lpfc_printf_log(phba, KERN_ERR,
1975                                         LOG_MBOX | LOG_SLI,
1976                                         "2013 Could not manually add FCF "
1977                                         "record 0, status %d\n", rc);
1978                                 rc = -ENODEV;
1979                                 kfree(fcf_record);
1980                                 goto out;
1981                         }
1982                         kfree(fcf_record);
1983                 }
1984                 /*
1985                  * The driver is expected to do FIP/FCF. Call the port
1986                  * and get the FCF Table.
1987                  */
1988                 spin_lock_irq(&phba->hbalock);
1989                 if (phba->hba_flag & FCF_DISC_INPROGRESS) {
1990                         spin_unlock_irq(&phba->hbalock);
1991                         return;
1992                 }
1993                 spin_unlock_irq(&phba->hbalock);
1994                 rc = lpfc_sli4_read_fcf_record(phba,
1995                                         LPFC_FCOE_FCF_GET_FIRST);
1996                 if (rc)
1997                         goto out;
1998         }
1999
2000         return;
2001 out:
2002         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2003         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2004                          "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
2005                          vport->port_state, sparam_mbox, cfglink_mbox);
2006         lpfc_issue_clear_la(phba, vport);
2007         return;
2008 }
2009
2010 static void
2011 lpfc_enable_la(struct lpfc_hba *phba)
2012 {
2013         uint32_t control;
2014         struct lpfc_sli *psli = &phba->sli;
2015         spin_lock_irq(&phba->hbalock);
2016         psli->sli_flag |= LPFC_PROCESS_LA;
2017         if (phba->sli_rev <= LPFC_SLI_REV3) {
2018                 control = readl(phba->HCregaddr);
2019                 control |= HC_LAINT_ENA;
2020                 writel(control, phba->HCregaddr);
2021                 readl(phba->HCregaddr); /* flush */
2022         }
2023         spin_unlock_irq(&phba->hbalock);
2024 }
2025
2026 static void
2027 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
2028 {
2029         lpfc_linkdown(phba);
2030         lpfc_enable_la(phba);
2031         lpfc_unregister_unused_fcf(phba);
2032         /* turn on Link Attention interrupts - no CLEAR_LA needed */
2033 }
2034
2035
2036 /*
2037  * This routine handles processing a READ_LA mailbox
2038  * command upon completion. It is setup in the LPFC_MBOXQ
2039  * as the completion routine when the command is
2040  * handed off to the SLI layer.
2041  */
2042 void
2043 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2044 {
2045         struct lpfc_vport *vport = pmb->vport;
2046         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2047         READ_LA_VAR *la;
2048         MAILBOX_t *mb = &pmb->u.mb;
2049         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2050
2051         /* Unblock ELS traffic */
2052         phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
2053         /* Check for error */
2054         if (mb->mbxStatus) {
2055                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
2056                                 "1307 READ_LA mbox error x%x state x%x\n",
2057                                 mb->mbxStatus, vport->port_state);
2058                 lpfc_mbx_issue_link_down(phba);
2059                 phba->link_state = LPFC_HBA_ERROR;
2060                 goto lpfc_mbx_cmpl_read_la_free_mbuf;
2061         }
2062
2063         la = (READ_LA_VAR *) &pmb->u.mb.un.varReadLA;
2064
2065         memcpy(&phba->alpa_map[0], mp->virt, 128);
2066
2067         spin_lock_irq(shost->host_lock);
2068         if (la->pb)
2069                 vport->fc_flag |= FC_BYPASSED_MODE;
2070         else
2071                 vport->fc_flag &= ~FC_BYPASSED_MODE;
2072         spin_unlock_irq(shost->host_lock);
2073
2074         if ((phba->fc_eventTag  < la->eventTag) ||
2075             (phba->fc_eventTag == la->eventTag)) {
2076                 phba->fc_stat.LinkMultiEvent++;
2077                 if (la->attType == AT_LINK_UP)
2078                         if (phba->fc_eventTag != 0)
2079                                 lpfc_linkdown(phba);
2080         }
2081
2082         phba->fc_eventTag = la->eventTag;
2083         if (la->mm)
2084                 phba->sli.sli_flag |= LPFC_MENLO_MAINT;
2085         else
2086                 phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
2087
2088         if (la->attType == AT_LINK_UP && (!la->mm)) {
2089                 phba->fc_stat.LinkUp++;
2090                 if (phba->link_flag & LS_LOOPBACK_MODE) {
2091                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2092                                         "1306 Link Up Event in loop back mode "
2093                                         "x%x received Data: x%x x%x x%x x%x\n",
2094                                         la->eventTag, phba->fc_eventTag,
2095                                         la->granted_AL_PA, la->UlnkSpeed,
2096                                         phba->alpa_map[0]);
2097                 } else {
2098                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2099                                         "1303 Link Up Event x%x received "
2100                                         "Data: x%x x%x x%x x%x x%x x%x %d\n",
2101                                         la->eventTag, phba->fc_eventTag,
2102                                         la->granted_AL_PA, la->UlnkSpeed,
2103                                         phba->alpa_map[0],
2104                                         la->mm, la->fa,
2105                                         phba->wait_4_mlo_maint_flg);
2106                 }
2107                 lpfc_mbx_process_link_up(phba, la);
2108         } else if (la->attType == AT_LINK_DOWN) {
2109                 phba->fc_stat.LinkDown++;
2110                 if (phba->link_flag & LS_LOOPBACK_MODE) {
2111                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2112                                 "1308 Link Down Event in loop back mode "
2113                                 "x%x received "
2114                                 "Data: x%x x%x x%x\n",
2115                                 la->eventTag, phba->fc_eventTag,
2116                                 phba->pport->port_state, vport->fc_flag);
2117                 }
2118                 else {
2119                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2120                                 "1305 Link Down Event x%x received "
2121                                 "Data: x%x x%x x%x x%x x%x\n",
2122                                 la->eventTag, phba->fc_eventTag,
2123                                 phba->pport->port_state, vport->fc_flag,
2124                                 la->mm, la->fa);
2125                 }
2126                 lpfc_mbx_issue_link_down(phba);
2127         }
2128         if (la->mm && la->attType == AT_LINK_UP) {
2129                 if (phba->link_state != LPFC_LINK_DOWN) {
2130                         phba->fc_stat.LinkDown++;
2131                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2132                                 "1312 Link Down Event x%x received "
2133                                 "Data: x%x x%x x%x\n",
2134                                 la->eventTag, phba->fc_eventTag,
2135                                 phba->pport->port_state, vport->fc_flag);
2136                         lpfc_mbx_issue_link_down(phba);
2137                 } else
2138                         lpfc_enable_la(phba);
2139
2140                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2141                                 "1310 Menlo Maint Mode Link up Event x%x rcvd "
2142                                 "Data: x%x x%x x%x\n",
2143                                 la->eventTag, phba->fc_eventTag,
2144                                 phba->pport->port_state, vport->fc_flag);
2145                 /*
2146                  * The cmnd that triggered this will be waiting for this
2147                  * signal.
2148                  */
2149                 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
2150                 if (phba->wait_4_mlo_maint_flg) {
2151                         phba->wait_4_mlo_maint_flg = 0;
2152                         wake_up_interruptible(&phba->wait_4_mlo_m_q);
2153                 }
2154         }
2155
2156         if (la->fa) {
2157                 if (la->mm)
2158                         lpfc_issue_clear_la(phba, vport);
2159                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
2160                                 "1311 fa %d\n", la->fa);
2161         }
2162
2163 lpfc_mbx_cmpl_read_la_free_mbuf:
2164         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2165         kfree(mp);
2166         mempool_free(pmb, phba->mbox_mem_pool);
2167         return;
2168 }
2169
2170 /*
2171  * This routine handles processing a REG_LOGIN mailbox
2172  * command upon completion. It is setup in the LPFC_MBOXQ
2173  * as the completion routine when the command is
2174  * handed off to the SLI layer.
2175  */
2176 void
2177 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2178 {
2179         struct lpfc_vport  *vport = pmb->vport;
2180         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2181         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2182
2183         pmb->context1 = NULL;
2184
2185         /* Good status, call state machine */
2186         lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
2187         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2188         kfree(mp);
2189         mempool_free(pmb, phba->mbox_mem_pool);
2190         /* decrement the node reference count held for this callback
2191          * function.
2192          */
2193         lpfc_nlp_put(ndlp);
2194
2195         return;
2196 }
2197
2198 static void
2199 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2200 {
2201         MAILBOX_t *mb = &pmb->u.mb;
2202         struct lpfc_vport *vport = pmb->vport;
2203         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2204
2205         switch (mb->mbxStatus) {
2206         case 0x0011:
2207         case 0x0020:
2208         case 0x9700:
2209                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2210                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
2211                                  mb->mbxStatus);
2212                 break;
2213         }
2214         vport->unreg_vpi_cmpl = VPORT_OK;
2215         mempool_free(pmb, phba->mbox_mem_pool);
2216         /*
2217          * This shost reference might have been taken at the beginning of
2218          * lpfc_vport_delete()
2219          */
2220         if (vport->load_flag & FC_UNLOADING)
2221                 scsi_host_put(shost);
2222 }
2223
2224 int
2225 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
2226 {
2227         struct lpfc_hba  *phba = vport->phba;
2228         LPFC_MBOXQ_t *mbox;
2229         int rc;
2230
2231         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2232         if (!mbox)
2233                 return 1;
2234
2235         lpfc_unreg_vpi(phba, vport->vpi, mbox);
2236         mbox->vport = vport;
2237         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
2238         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2239         if (rc == MBX_NOT_FINISHED) {
2240                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
2241                                  "1800 Could not issue unreg_vpi\n");
2242                 mempool_free(mbox, phba->mbox_mem_pool);
2243                 vport->unreg_vpi_cmpl = VPORT_ERROR;
2244                 return rc;
2245         }
2246         return 0;
2247 }
2248
2249 static void
2250 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2251 {
2252         struct lpfc_vport *vport = pmb->vport;
2253         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2254         MAILBOX_t *mb = &pmb->u.mb;
2255
2256         switch (mb->mbxStatus) {
2257         case 0x0011:
2258         case 0x9601:
2259         case 0x9602:
2260                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2261                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
2262                                  mb->mbxStatus);
2263                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2264                 spin_lock_irq(shost->host_lock);
2265                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2266                 spin_unlock_irq(shost->host_lock);
2267                 vport->fc_myDID = 0;
2268                 goto out;
2269         }
2270
2271         vport->num_disc_nodes = 0;
2272         /* go thru NPR list and issue ELS PLOGIs */
2273         if (vport->fc_npr_cnt)
2274                 lpfc_els_disc_plogi(vport);
2275
2276         if (!vport->num_disc_nodes) {
2277                 spin_lock_irq(shost->host_lock);
2278                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2279                 spin_unlock_irq(shost->host_lock);
2280                 lpfc_can_disctmo(vport);
2281         }
2282         vport->port_state = LPFC_VPORT_READY;
2283
2284 out:
2285         mempool_free(pmb, phba->mbox_mem_pool);
2286         return;
2287 }
2288
2289 /**
2290  * lpfc_create_static_vport - Read HBA config region to create static vports.
2291  * @phba: pointer to lpfc hba data structure.
2292  *
2293  * This routine issue a DUMP mailbox command for config region 22 to get
2294  * the list of static vports to be created. The function create vports
2295  * based on the information returned from the HBA.
2296  **/
2297 void
2298 lpfc_create_static_vport(struct lpfc_hba *phba)
2299 {
2300         LPFC_MBOXQ_t *pmb = NULL;
2301         MAILBOX_t *mb;
2302         struct static_vport_info *vport_info;
2303         int rc = 0, i;
2304         struct fc_vport_identifiers vport_id;
2305         struct fc_vport *new_fc_vport;
2306         struct Scsi_Host *shost;
2307         struct lpfc_vport *vport;
2308         uint16_t offset = 0;
2309         uint8_t *vport_buff;
2310         struct lpfc_dmabuf *mp;
2311         uint32_t byte_count = 0;
2312
2313         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2314         if (!pmb) {
2315                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2316                                 "0542 lpfc_create_static_vport failed to"
2317                                 " allocate mailbox memory\n");
2318                 return;
2319         }
2320
2321         mb = &pmb->u.mb;
2322
2323         vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
2324         if (!vport_info) {
2325                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2326                                 "0543 lpfc_create_static_vport failed to"
2327                                 " allocate vport_info\n");
2328                 mempool_free(pmb, phba->mbox_mem_pool);
2329                 return;
2330         }
2331
2332         vport_buff = (uint8_t *) vport_info;
2333         do {
2334                 if (lpfc_dump_static_vport(phba, pmb, offset))
2335                         goto out;
2336
2337                 pmb->vport = phba->pport;
2338                 rc = lpfc_sli_issue_mbox_wait(phba, pmb, LPFC_MBOX_TMO);
2339
2340                 if ((rc != MBX_SUCCESS) || mb->mbxStatus) {
2341                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2342                                 "0544 lpfc_create_static_vport failed to"
2343                                 " issue dump mailbox command ret 0x%x "
2344                                 "status 0x%x\n",
2345                                 rc, mb->mbxStatus);
2346                         goto out;
2347                 }
2348
2349                 if (phba->sli_rev == LPFC_SLI_REV4) {
2350                         byte_count = pmb->u.mqe.un.mb_words[5];
2351                         mp = (struct lpfc_dmabuf *) pmb->context2;
2352                         if (byte_count > sizeof(struct static_vport_info) -
2353                                         offset)
2354                                 byte_count = sizeof(struct static_vport_info)
2355                                         - offset;
2356                         memcpy(vport_buff + offset, mp->virt, byte_count);
2357                         offset += byte_count;
2358                 } else {
2359                         if (mb->un.varDmp.word_cnt >
2360                                 sizeof(struct static_vport_info) - offset)
2361                                 mb->un.varDmp.word_cnt =
2362                                         sizeof(struct static_vport_info)
2363                                                 - offset;
2364                         byte_count = mb->un.varDmp.word_cnt;
2365                         lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
2366                                 vport_buff + offset,
2367                                 byte_count);
2368
2369                         offset += byte_count;
2370                 }
2371
2372         } while (byte_count &&
2373                 offset < sizeof(struct static_vport_info));
2374
2375
2376         if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
2377                 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
2378                         != VPORT_INFO_REV)) {
2379                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2380                         "0545 lpfc_create_static_vport bad"
2381                         " information header 0x%x 0x%x\n",
2382                         le32_to_cpu(vport_info->signature),
2383                         le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK);
2384
2385                 goto out;
2386         }
2387
2388         shost = lpfc_shost_from_vport(phba->pport);
2389
2390         for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
2391                 memset(&vport_id, 0, sizeof(vport_id));
2392                 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
2393                 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
2394                 if (!vport_id.port_name || !vport_id.node_name)
2395                         continue;
2396
2397                 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
2398                 vport_id.vport_type = FC_PORTTYPE_NPIV;
2399                 vport_id.disable = false;
2400                 new_fc_vport = fc_vport_create(shost, 0, &vport_id);
2401
2402                 if (!new_fc_vport) {
2403                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2404                                 "0546 lpfc_create_static_vport failed to"
2405                                 " create vport\n");
2406                         continue;
2407                 }
2408
2409                 vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
2410                 vport->vport_flag |= STATIC_VPORT;
2411         }
2412
2413 out:
2414         kfree(vport_info);
2415         if (rc != MBX_TIMEOUT) {
2416                 if (pmb->context2) {
2417                         mp = (struct lpfc_dmabuf *) pmb->context2;
2418                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2419                         kfree(mp);
2420                 }
2421                 mempool_free(pmb, phba->mbox_mem_pool);
2422         }
2423
2424         return;
2425 }
2426
2427 /*
2428  * This routine handles processing a Fabric REG_LOGIN mailbox
2429  * command upon completion. It is setup in the LPFC_MBOXQ
2430  * as the completion routine when the command is
2431  * handed off to the SLI layer.
2432  */
2433 void
2434 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2435 {
2436         struct lpfc_vport *vport = pmb->vport;
2437         MAILBOX_t *mb = &pmb->u.mb;
2438         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2439         struct lpfc_nodelist *ndlp;
2440
2441         ndlp = (struct lpfc_nodelist *) pmb->context2;
2442         pmb->context1 = NULL;
2443         pmb->context2 = NULL;
2444         if (mb->mbxStatus) {
2445                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2446                                  "0258 Register Fabric login error: 0x%x\n",
2447                                  mb->mbxStatus);
2448                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2449                 kfree(mp);
2450                 mempool_free(pmb, phba->mbox_mem_pool);
2451
2452                 if (phba->fc_topology == TOPOLOGY_LOOP) {
2453                         /* FLOGI failed, use loop map to make discovery list */
2454                         lpfc_disc_list_loopmap(vport);
2455
2456                         /* Start discovery */
2457                         lpfc_disc_start(vport);
2458                         /* Decrement the reference count to ndlp after the
2459                          * reference to the ndlp are done.
2460                          */
2461                         lpfc_nlp_put(ndlp);
2462                         return;
2463                 }
2464
2465                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2466                 /* Decrement the reference count to ndlp after the reference
2467                  * to the ndlp are done.
2468                  */
2469                 lpfc_nlp_put(ndlp);
2470                 return;
2471         }
2472
2473         ndlp->nlp_rpi = mb->un.varWords[0];
2474         ndlp->nlp_flag |= NLP_RPI_VALID;
2475         ndlp->nlp_type |= NLP_FABRIC;
2476         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2477
2478         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
2479                 lpfc_start_fdiscs(phba);
2480                 lpfc_do_scr_ns_plogi(phba, vport);
2481         }
2482
2483         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2484         kfree(mp);
2485         mempool_free(pmb, phba->mbox_mem_pool);
2486
2487         /* Drop the reference count from the mbox at the end after
2488          * all the current reference to the ndlp have been done.
2489          */
2490         lpfc_nlp_put(ndlp);
2491         return;
2492 }
2493
2494 /*
2495  * This routine handles processing a NameServer REG_LOGIN mailbox
2496  * command upon completion. It is setup in the LPFC_MBOXQ
2497  * as the completion routine when the command is
2498  * handed off to the SLI layer.
2499  */
2500 void
2501 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2502 {
2503         MAILBOX_t *mb = &pmb->u.mb;
2504         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2505         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2506         struct lpfc_vport *vport = pmb->vport;
2507
2508         if (mb->mbxStatus) {
2509 out:
2510                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2511                                  "0260 Register NameServer error: 0x%x\n",
2512                                  mb->mbxStatus);
2513                 /* decrement the node reference count held for this
2514                  * callback function.
2515                  */
2516                 lpfc_nlp_put(ndlp);
2517                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2518                 kfree(mp);
2519                 mempool_free(pmb, phba->mbox_mem_pool);
2520
2521                 /* If no other thread is using the ndlp, free it */
2522                 lpfc_nlp_not_used(ndlp);
2523
2524                 if (phba->fc_topology == TOPOLOGY_LOOP) {
2525                         /*
2526                          * RegLogin failed, use loop map to make discovery
2527                          * list
2528                          */
2529                         lpfc_disc_list_loopmap(vport);
2530
2531                         /* Start discovery */
2532                         lpfc_disc_start(vport);
2533                         return;
2534                 }
2535                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2536                 return;
2537         }
2538
2539         pmb->context1 = NULL;
2540
2541         ndlp->nlp_rpi = mb->un.varWords[0];
2542         ndlp->nlp_flag |= NLP_RPI_VALID;
2543         ndlp->nlp_type |= NLP_FABRIC;
2544         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2545
2546         if (vport->port_state < LPFC_VPORT_READY) {
2547                 /* Link up discovery requires Fabric registration. */
2548                 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
2549                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
2550                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
2551                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
2552                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
2553
2554                 /* Issue SCR just before NameServer GID_FT Query */
2555                 lpfc_issue_els_scr(vport, SCR_DID, 0);
2556         }
2557
2558         vport->fc_ns_retry = 0;
2559         /* Good status, issue CT Request to NameServer */
2560         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
2561                 /* Cannot issue NameServer Query, so finish up discovery */
2562                 goto out;
2563         }
2564
2565         /* decrement the node reference count held for this
2566          * callback function.
2567          */
2568         lpfc_nlp_put(ndlp);
2569         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2570         kfree(mp);
2571         mempool_free(pmb, phba->mbox_mem_pool);
2572
2573         return;
2574 }
2575
2576 static void
2577 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2578 {
2579         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2580         struct fc_rport  *rport;
2581         struct lpfc_rport_data *rdata;
2582         struct fc_rport_identifiers rport_ids;
2583         struct lpfc_hba  *phba = vport->phba;
2584
2585         /* Remote port has reappeared. Re-register w/ FC transport */
2586         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
2587         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
2588         rport_ids.port_id = ndlp->nlp_DID;
2589         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
2590
2591         /*
2592          * We leave our node pointer in rport->dd_data when we unregister a
2593          * FCP target port.  But fc_remote_port_add zeros the space to which
2594          * rport->dd_data points.  So, if we're reusing a previously
2595          * registered port, drop the reference that we took the last time we
2596          * registered the port.
2597          */
2598         if (ndlp->rport && ndlp->rport->dd_data &&
2599             ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
2600                 lpfc_nlp_put(ndlp);
2601
2602         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
2603                 "rport add:       did:x%x flg:x%x type x%x",
2604                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
2605
2606         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
2607         if (!rport || !get_device(&rport->dev)) {
2608                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
2609                            "Warning: fc_remote_port_add failed\n");
2610                 return;
2611         }
2612
2613         /* initialize static port data */
2614         rport->maxframe_size = ndlp->nlp_maxframe;
2615         rport->supported_classes = ndlp->nlp_class_sup;
2616         rdata = rport->dd_data;
2617         rdata->pnode = lpfc_nlp_get(ndlp);
2618
2619         if (ndlp->nlp_type & NLP_FCP_TARGET)
2620                 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
2621         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
2622                 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
2623
2624
2625         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
2626                 fc_remote_port_rolechg(rport, rport_ids.roles);
2627
2628         if ((rport->scsi_target_id != -1) &&
2629             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
2630                 ndlp->nlp_sid = rport->scsi_target_id;
2631         }
2632         return;
2633 }
2634
2635 static void
2636 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
2637 {
2638         struct fc_rport *rport = ndlp->rport;
2639
2640         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
2641                 "rport delete:    did:x%x flg:x%x type x%x",
2642                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
2643
2644         fc_remote_port_delete(rport);
2645
2646         return;
2647 }
2648
2649 static void
2650 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
2651 {
2652         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2653
2654         spin_lock_irq(shost->host_lock);
2655         switch (state) {
2656         case NLP_STE_UNUSED_NODE:
2657                 vport->fc_unused_cnt += count;
2658                 break;
2659         case NLP_STE_PLOGI_ISSUE:
2660                 vport->fc_plogi_cnt += count;
2661                 break;
2662         case NLP_STE_ADISC_ISSUE:
2663                 vport->fc_adisc_cnt += count;
2664                 break;
2665         case NLP_STE_REG_LOGIN_ISSUE:
2666                 vport->fc_reglogin_cnt += count;
2667                 break;
2668         case NLP_STE_PRLI_ISSUE:
2669                 vport->fc_prli_cnt += count;
2670                 break;
2671         case NLP_STE_UNMAPPED_NODE:
2672                 vport->fc_unmap_cnt += count;
2673                 break;
2674         case NLP_STE_MAPPED_NODE:
2675                 vport->fc_map_cnt += count;
2676                 break;
2677         case NLP_STE_NPR_NODE:
2678                 vport->fc_npr_cnt += count;
2679                 break;
2680         }
2681         spin_unlock_irq(shost->host_lock);
2682 }
2683
2684 static void
2685 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2686                        int old_state, int new_state)
2687 {
2688         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2689
2690         if (new_state == NLP_STE_UNMAPPED_NODE) {
2691                 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
2692                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
2693                 ndlp->nlp_type |= NLP_FC_NODE;
2694         }
2695         if (new_state == NLP_STE_MAPPED_NODE)
2696                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
2697         if (new_state == NLP_STE_NPR_NODE)
2698                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
2699
2700         /* Transport interface */
2701         if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
2702                             old_state == NLP_STE_UNMAPPED_NODE)) {
2703                 vport->phba->nport_event_cnt++;
2704                 lpfc_unregister_remote_port(ndlp);
2705         }
2706
2707         if (new_state ==  NLP_STE_MAPPED_NODE ||
2708             new_state == NLP_STE_UNMAPPED_NODE) {
2709                 vport->phba->nport_event_cnt++;
2710                 /*
2711                  * Tell the fc transport about the port, if we haven't
2712                  * already. If we have, and it's a scsi entity, be
2713                  * sure to unblock any attached scsi devices
2714                  */
2715                 lpfc_register_remote_port(vport, ndlp);
2716         }
2717         if ((new_state ==  NLP_STE_MAPPED_NODE) &&
2718                 (vport->stat_data_enabled)) {
2719                 /*
2720                  * A new target is discovered, if there is no buffer for
2721                  * statistical data collection allocate buffer.
2722                  */
2723                 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
2724                                          sizeof(struct lpfc_scsicmd_bkt),
2725                                          GFP_KERNEL);
2726
2727                 if (!ndlp->lat_data)
2728                         lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
2729                                 "0286 lpfc_nlp_state_cleanup failed to "
2730                                 "allocate statistical data buffer DID "
2731                                 "0x%x\n", ndlp->nlp_DID);
2732         }
2733         /*
2734          * if we added to Mapped list, but the remote port
2735          * registration failed or assigned a target id outside
2736          * our presentable range - move the node to the
2737          * Unmapped List
2738          */
2739         if (new_state == NLP_STE_MAPPED_NODE &&
2740             (!ndlp->rport ||
2741              ndlp->rport->scsi_target_id == -1 ||
2742              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
2743                 spin_lock_irq(shost->host_lock);
2744                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
2745                 spin_unlock_irq(shost->host_lock);
2746                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2747         }
2748 }
2749
2750 static char *
2751 lpfc_nlp_state_name(char *buffer, size_t size, int state)
2752 {
2753         static char *states[] = {
2754                 [NLP_STE_UNUSED_NODE] = "UNUSED",
2755                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
2756                 [NLP_STE_ADISC_ISSUE] = "ADISC",
2757                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
2758                 [NLP_STE_PRLI_ISSUE] = "PRLI",
2759                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
2760                 [NLP_STE_MAPPED_NODE] = "MAPPED",
2761                 [NLP_STE_NPR_NODE] = "NPR",
2762         };
2763
2764         if (state < NLP_STE_MAX_STATE && states[state])
2765                 strlcpy(buffer, states[state], size);
2766         else
2767                 snprintf(buffer, size, "unknown (%d)", state);
2768         return buffer;
2769 }
2770
2771 void
2772 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2773                    int state)
2774 {
2775         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2776         int  old_state = ndlp->nlp_state;
2777         char name1[16], name2[16];
2778
2779         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2780                          "0904 NPort state transition x%06x, %s -> %s\n",
2781                          ndlp->nlp_DID,
2782                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
2783                          lpfc_nlp_state_name(name2, sizeof(name2), state));
2784
2785         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2786                 "node statechg    did:x%x old:%d ste:%d",
2787                 ndlp->nlp_DID, old_state, state);
2788
2789         if (old_state == NLP_STE_NPR_NODE &&
2790             state != NLP_STE_NPR_NODE)
2791                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2792         if (old_state == NLP_STE_UNMAPPED_NODE) {
2793                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
2794                 ndlp->nlp_type &= ~NLP_FC_NODE;
2795         }
2796
2797         if (list_empty(&ndlp->nlp_listp)) {
2798                 spin_lock_irq(shost->host_lock);
2799                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
2800                 spin_unlock_irq(shost->host_lock);
2801         } else if (old_state)
2802                 lpfc_nlp_counters(vport, old_state, -1);
2803
2804         ndlp->nlp_state = state;
2805         lpfc_nlp_counters(vport, state, 1);
2806         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
2807 }
2808
2809 void
2810 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2811 {
2812         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2813
2814         if (list_empty(&ndlp->nlp_listp)) {
2815                 spin_lock_irq(shost->host_lock);
2816                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
2817                 spin_unlock_irq(shost->host_lock);
2818         }
2819 }
2820
2821 void
2822 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2823 {
2824         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2825
2826         lpfc_cancel_retry_delay_tmo(vport, ndlp);
2827         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
2828                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
2829         spin_lock_irq(shost->host_lock);
2830         list_del_init(&ndlp->nlp_listp);
2831         spin_unlock_irq(shost->host_lock);
2832         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
2833                                 NLP_STE_UNUSED_NODE);
2834 }
2835
2836 static void
2837 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2838 {
2839         lpfc_cancel_retry_delay_tmo(vport, ndlp);
2840         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
2841                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
2842         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
2843                                 NLP_STE_UNUSED_NODE);
2844 }
2845 /**
2846  * lpfc_initialize_node - Initialize all fields of node object
2847  * @vport: Pointer to Virtual Port object.
2848  * @ndlp: Pointer to FC node object.
2849  * @did: FC_ID of the node.
2850  *
2851  * This function is always called when node object need to be initialized.
2852  * It initializes all the fields of the node object. Although the reference
2853  * to phba from @ndlp can be obtained indirectly through it's reference to
2854  * @vport, a direct reference to phba is taken here by @ndlp. This is due
2855  * to the life-span of the @ndlp might go beyond the existence of @vport as
2856  * the final release of ndlp is determined by its reference count. And, the
2857  * operation on @ndlp needs the reference to phba.
2858  **/
2859 static inline void
2860 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2861         uint32_t did)
2862 {
2863         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
2864         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
2865         init_timer(&ndlp->nlp_delayfunc);
2866         ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
2867         ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
2868         ndlp->nlp_DID = did;
2869         ndlp->vport = vport;
2870         ndlp->phba = vport->phba;
2871         ndlp->nlp_sid = NLP_NO_SID;
2872         kref_init(&ndlp->kref);
2873         NLP_INT_NODE_ACT(ndlp);
2874         atomic_set(&ndlp->cmd_pending, 0);
2875         ndlp->cmd_qdepth = LPFC_MAX_TGT_QDEPTH;
2876 }
2877
2878 struct lpfc_nodelist *
2879 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2880                  int state)
2881 {
2882         struct lpfc_hba *phba = vport->phba;
2883         uint32_t did;
2884         unsigned long flags;
2885
2886         if (!ndlp)
2887                 return NULL;
2888
2889         spin_lock_irqsave(&phba->ndlp_lock, flags);
2890         /* The ndlp should not be in memory free mode */
2891         if (NLP_CHK_FREE_REQ(ndlp)) {
2892                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
2893                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2894                                 "0277 lpfc_enable_node: ndlp:x%p "
2895                                 "usgmap:x%x refcnt:%d\n",
2896                                 (void *)ndlp, ndlp->nlp_usg_map,
2897                                 atomic_read(&ndlp->kref.refcount));
2898                 return NULL;
2899         }
2900         /* The ndlp should not already be in active mode */
2901         if (NLP_CHK_NODE_ACT(ndlp)) {
2902                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
2903                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2904                                 "0278 lpfc_enable_node: ndlp:x%p "
2905                                 "usgmap:x%x refcnt:%d\n",
2906                                 (void *)ndlp, ndlp->nlp_usg_map,
2907                                 atomic_read(&ndlp->kref.refcount));
2908                 return NULL;
2909         }
2910
2911         /* Keep the original DID */
2912         did = ndlp->nlp_DID;
2913
2914         /* re-initialize ndlp except of ndlp linked list pointer */
2915         memset((((char *)ndlp) + sizeof (struct list_head)), 0,
2916                 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
2917         lpfc_initialize_node(vport, ndlp, did);
2918
2919         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
2920
2921         if (state != NLP_STE_UNUSED_NODE)
2922                 lpfc_nlp_set_state(vport, ndlp, state);
2923
2924         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2925                 "node enable:       did:x%x",
2926                 ndlp->nlp_DID, 0, 0);
2927         return ndlp;
2928 }
2929
2930 void
2931 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2932 {
2933         /*
2934          * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
2935          * be used if we wish to issue the "last" lpfc_nlp_put() to remove
2936          * the ndlp from the vport. The ndlp marked as UNUSED on the list
2937          * until ALL other outstanding threads have completed. We check
2938          * that the ndlp not already in the UNUSED state before we proceed.
2939          */
2940         if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
2941                 return;
2942         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
2943         lpfc_nlp_put(ndlp);
2944         return;
2945 }
2946
2947 /*
2948  * Start / ReStart rescue timer for Discovery / RSCN handling
2949  */
2950 void
2951 lpfc_set_disctmo(struct lpfc_vport *vport)
2952 {
2953         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2954         struct lpfc_hba  *phba = vport->phba;
2955         uint32_t tmo;
2956
2957         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
2958                 /* For FAN, timeout should be greater than edtov */
2959                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
2960         } else {
2961                 /* Normal discovery timeout should be > than ELS/CT timeout
2962                  * FC spec states we need 3 * ratov for CT requests
2963                  */
2964                 tmo = ((phba->fc_ratov * 3) + 3);
2965         }
2966
2967
2968         if (!timer_pending(&vport->fc_disctmo)) {
2969                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2970                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
2971                         tmo, vport->port_state, vport->fc_flag);
2972         }
2973
2974         mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
2975         spin_lock_irq(shost->host_lock);
2976         vport->fc_flag |= FC_DISC_TMO;
2977         spin_unlock_irq(shost->host_lock);
2978
2979         /* Start Discovery Timer state <hba_state> */
2980         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2981                          "0247 Start Discovery Timer state x%x "
2982                          "Data: x%x x%lx x%x x%x\n",
2983                          vport->port_state, tmo,
2984                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
2985                          vport->fc_adisc_cnt);
2986
2987         return;
2988 }
2989
2990 /*
2991  * Cancel rescue timer for Discovery / RSCN handling
2992  */
2993 int
2994 lpfc_can_disctmo(struct lpfc_vport *vport)
2995 {
2996         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2997         unsigned long iflags;
2998
2999         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3000                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
3001                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
3002
3003         /* Turn off discovery timer if its running */
3004         if (vport->fc_flag & FC_DISC_TMO) {
3005                 spin_lock_irqsave(shost->host_lock, iflags);
3006                 vport->fc_flag &= ~FC_DISC_TMO;
3007                 spin_unlock_irqrestore(shost->host_lock, iflags);
3008                 del_timer_sync(&vport->fc_disctmo);
3009                 spin_lock_irqsave(&vport->work_port_lock, iflags);
3010                 vport->work_port_events &= ~WORKER_DISC_TMO;
3011                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
3012         }
3013
3014         /* Cancel Discovery Timer state <hba_state> */
3015         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3016                          "0248 Cancel Discovery Timer state x%x "
3017                          "Data: x%x x%x x%x\n",
3018                          vport->port_state, vport->fc_flag,
3019                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
3020         return 0;
3021 }
3022
3023 /*
3024  * Check specified ring for outstanding IOCB on the SLI queue
3025  * Return true if iocb matches the specified nport
3026  */
3027 int
3028 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
3029                     struct lpfc_sli_ring *pring,
3030                     struct lpfc_iocbq *iocb,
3031                     struct lpfc_nodelist *ndlp)
3032 {
3033         struct lpfc_sli *psli = &phba->sli;
3034         IOCB_t *icmd = &iocb->iocb;
3035         struct lpfc_vport    *vport = ndlp->vport;
3036
3037         if (iocb->vport != vport)
3038                 return 0;
3039
3040         if (pring->ringno == LPFC_ELS_RING) {
3041                 switch (icmd->ulpCommand) {
3042                 case CMD_GEN_REQUEST64_CR:
3043                         if (iocb->context_un.ndlp == ndlp)
3044                                 return 1;
3045                 case CMD_ELS_REQUEST64_CR:
3046                         if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
3047                                 return 1;
3048                 case CMD_XMIT_ELS_RSP64_CX:
3049                         if (iocb->context1 == (uint8_t *) ndlp)
3050                                 return 1;
3051                 }
3052         } else if (pring->ringno == psli->extra_ring) {
3053
3054         } else if (pring->ringno == psli->fcp_ring) {
3055                 /* Skip match check if waiting to relogin to FCP target */
3056                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
3057                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
3058                         return 0;
3059                 }
3060                 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
3061                         return 1;
3062                 }
3063         } else if (pring->ringno == psli->next_ring) {
3064
3065         }
3066         return 0;
3067 }
3068
3069 /*
3070  * Free resources / clean up outstanding I/Os
3071  * associated with nlp_rpi in the LPFC_NODELIST entry.
3072  */
3073 static int
3074 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
3075 {
3076         LIST_HEAD(completions);
3077         struct lpfc_sli *psli;
3078         struct lpfc_sli_ring *pring;
3079         struct lpfc_iocbq *iocb, *next_iocb;
3080         uint32_t rpi, i;
3081
3082         lpfc_fabric_abort_nport(ndlp);
3083
3084         /*
3085          * Everything that matches on txcmplq will be returned
3086          * by firmware with a no rpi error.
3087          */
3088         psli = &phba->sli;
3089         rpi = ndlp->nlp_rpi;
3090         if (ndlp->nlp_flag & NLP_RPI_VALID) {
3091                 /* Now process each ring */
3092                 for (i = 0; i < psli->num_rings; i++) {
3093                         pring = &psli->ring[i];
3094
3095                         spin_lock_irq(&phba->hbalock);
3096                         list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
3097                                                  list) {
3098                                 /*
3099                                  * Check to see if iocb matches the nport we are
3100                                  * looking for
3101                                  */
3102                                 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
3103                                                          ndlp))) {
3104                                         /* It matches, so deque and call compl
3105                                            with an error */
3106                                         list_move_tail(&iocb->list,
3107                                                        &completions);
3108                                         pring->txq_cnt--;
3109                                 }
3110                         }
3111                         spin_unlock_irq(&phba->hbalock);
3112                 }
3113         }
3114
3115         /* Cancel all the IOCBs from the completions list */
3116         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
3117                               IOERR_SLI_ABORTED);
3118
3119         return 0;
3120 }
3121
3122 /*
3123  * Free rpi associated with LPFC_NODELIST entry.
3124  * This routine is called from lpfc_freenode(), when we are removing
3125  * a LPFC_NODELIST entry. It is also called if the driver initiates a
3126  * LOGO that completes successfully, and we are waiting to PLOGI back
3127  * to the remote NPort. In addition, it is called after we receive
3128  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
3129  * we are waiting to PLOGI back to the remote NPort.
3130  */
3131 int
3132 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3133 {
3134         struct lpfc_hba *phba = vport->phba;
3135         LPFC_MBOXQ_t    *mbox;
3136         int rc;
3137
3138         if (ndlp->nlp_flag & NLP_RPI_VALID) {
3139                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3140                 if (mbox) {
3141                         lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
3142                         mbox->vport = vport;
3143                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3144                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3145                         if (rc == MBX_NOT_FINISHED)
3146                                 mempool_free(mbox, phba->mbox_mem_pool);
3147                 }
3148                 lpfc_no_rpi(phba, ndlp);
3149                 ndlp->nlp_rpi = 0;
3150                 ndlp->nlp_flag &= ~NLP_RPI_VALID;
3151                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
3152                 return 1;
3153         }
3154         return 0;
3155 }
3156
3157 void
3158 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
3159 {
3160         struct lpfc_hba  *phba  = vport->phba;
3161         LPFC_MBOXQ_t     *mbox;
3162         int rc;
3163
3164         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3165         if (mbox) {
3166                 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
3167                 mbox->vport = vport;
3168                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3169                 mbox->context1 = NULL;
3170                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
3171                 if (rc != MBX_TIMEOUT)
3172                         mempool_free(mbox, phba->mbox_mem_pool);
3173
3174                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
3175                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
3176                                 "1836 Could not issue "
3177                                 "unreg_login(all_rpis) status %d\n", rc);
3178         }
3179 }
3180
3181 void
3182 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
3183 {
3184         struct lpfc_hba  *phba  = vport->phba;
3185         LPFC_MBOXQ_t     *mbox;
3186         int rc;
3187
3188         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3189         if (mbox) {
3190                 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
3191                 mbox->vport = vport;
3192                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3193                 mbox->context1 = NULL;
3194                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
3195                 if (rc != MBX_TIMEOUT)
3196                         mempool_free(mbox, phba->mbox_mem_pool);
3197
3198                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
3199                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
3200                                          "1815 Could not issue "
3201                                          "unreg_did (default rpis) status %d\n",
3202                                          rc);
3203         }
3204 }
3205
3206 /*
3207  * Free resources associated with LPFC_NODELIST entry
3208  * so it can be freed.
3209  */
3210 static int
3211 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3212 {
3213         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3214         struct lpfc_hba  *phba = vport->phba;
3215         LPFC_MBOXQ_t *mb, *nextmb;
3216         struct lpfc_dmabuf *mp;
3217
3218         /* Cleanup node for NPort <nlp_DID> */
3219         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3220                          "0900 Cleanup node for NPort x%x "
3221                          "Data: x%x x%x x%x\n",
3222                          ndlp->nlp_DID, ndlp->nlp_flag,
3223                          ndlp->nlp_state, ndlp->nlp_rpi);
3224         if (NLP_CHK_FREE_REQ(ndlp)) {
3225                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3226                                 "0280 lpfc_cleanup_node: ndlp:x%p "
3227                                 "usgmap:x%x refcnt:%d\n",
3228                                 (void *)ndlp, ndlp->nlp_usg_map,
3229                                 atomic_read(&ndlp->kref.refcount));
3230                 lpfc_dequeue_node(vport, ndlp);
3231         } else {
3232                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3233                                 "0281 lpfc_cleanup_node: ndlp:x%p "
3234                                 "usgmap:x%x refcnt:%d\n",
3235                                 (void *)ndlp, ndlp->nlp_usg_map,
3236                                 atomic_read(&ndlp->kref.refcount));
3237                 lpfc_disable_node(vport, ndlp);
3238         }
3239
3240         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
3241         if ((mb = phba->sli.mbox_active)) {
3242                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
3243                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
3244                         mb->context2 = NULL;
3245                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3246                 }
3247         }
3248
3249         spin_lock_irq(&phba->hbalock);
3250         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
3251                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
3252                     (ndlp == (struct lpfc_nodelist *) mb->context2)) {
3253                         mp = (struct lpfc_dmabuf *) (mb->context1);
3254                         if (mp) {
3255                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
3256                                 kfree(mp);
3257                         }
3258                         list_del(&mb->list);
3259                         mempool_free(mb, phba->mbox_mem_pool);
3260                         /* We shall not invoke the lpfc_nlp_put to decrement
3261                          * the ndlp reference count as we are in the process
3262                          * of lpfc_nlp_release.
3263                          */
3264                 }
3265         }
3266         spin_unlock_irq(&phba->hbalock);
3267
3268         lpfc_els_abort(phba, ndlp);
3269
3270         spin_lock_irq(shost->host_lock);
3271         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
3272         spin_unlock_irq(shost->host_lock);
3273
3274         ndlp->nlp_last_elscmd = 0;
3275         del_timer_sync(&ndlp->nlp_delayfunc);
3276
3277         list_del_init(&ndlp->els_retry_evt.evt_listp);
3278         list_del_init(&ndlp->dev_loss_evt.evt_listp);
3279
3280         lpfc_unreg_rpi(vport, ndlp);
3281
3282         return 0;
3283 }
3284
3285 /*
3286  * Check to see if we can free the nlp back to the freelist.
3287  * If we are in the middle of using the nlp in the discovery state
3288  * machine, defer the free till we reach the end of the state machine.
3289  */
3290 static void
3291 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3292 {
3293         struct lpfc_hba  *phba = vport->phba;
3294         struct lpfc_rport_data *rdata;
3295         LPFC_MBOXQ_t *mbox;
3296         int rc;
3297
3298         lpfc_cancel_retry_delay_tmo(vport, ndlp);
3299         if ((ndlp->nlp_flag & NLP_DEFER_RM) &&
3300             !(ndlp->nlp_flag & NLP_RPI_VALID)) {
3301                 /* For this case we need to cleanup the default rpi
3302                  * allocated by the firmware.
3303                  */
3304                 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
3305                         != NULL) {
3306                         rc = lpfc_reg_rpi(phba, vport->vpi, ndlp->nlp_DID,
3307                             (uint8_t *) &vport->fc_sparam, mbox, 0);
3308                         if (rc) {
3309                                 mempool_free(mbox, phba->mbox_mem_pool);
3310                         }
3311                         else {
3312                                 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
3313                                 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
3314                                 mbox->vport = vport;
3315                                 mbox->context2 = NULL;
3316                                 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3317                                 if (rc == MBX_NOT_FINISHED) {
3318                                         mempool_free(mbox, phba->mbox_mem_pool);
3319                                 }
3320                         }
3321                 }
3322         }
3323         lpfc_cleanup_node(vport, ndlp);
3324
3325         /*
3326          * We can get here with a non-NULL ndlp->rport because when we
3327          * unregister a rport we don't break the rport/node linkage.  So if we
3328          * do, make sure we don't leaving any dangling pointers behind.
3329          */
3330         if (ndlp->rport) {
3331                 rdata = ndlp->rport->dd_data;
3332                 rdata->pnode = NULL;
3333                 ndlp->rport = NULL;
3334         }
3335 }
3336
3337 static int
3338 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3339               uint32_t did)
3340 {
3341         D_ID mydid, ndlpdid, matchdid;
3342
3343         if (did == Bcast_DID)
3344                 return 0;
3345
3346         /* First check for Direct match */
3347         if (ndlp->nlp_DID == did)
3348                 return 1;
3349
3350         /* Next check for area/domain identically equals 0 match */
3351         mydid.un.word = vport->fc_myDID;
3352         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
3353                 return 0;
3354         }
3355
3356         matchdid.un.word = did;
3357         ndlpdid.un.word = ndlp->nlp_DID;
3358         if (matchdid.un.b.id == ndlpdid.un.b.id) {
3359                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
3360                     (mydid.un.b.area == matchdid.un.b.area)) {
3361                         if ((ndlpdid.un.b.domain == 0) &&
3362                             (ndlpdid.un.b.area == 0)) {
3363                                 if (ndlpdid.un.b.id)
3364                                         return 1;
3365                         }
3366                         return 0;
3367                 }
3368
3369                 matchdid.un.word = ndlp->nlp_DID;
3370                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
3371                     (mydid.un.b.area == ndlpdid.un.b.area)) {
3372                         if ((matchdid.un.b.domain == 0) &&
3373                             (matchdid.un.b.area == 0)) {
3374                                 if (matchdid.un.b.id)
3375                                         return 1;
3376                         }
3377                 }
3378         }
3379         return 0;
3380 }
3381
3382 /* Search for a nodelist entry */
3383 static struct lpfc_nodelist *
3384 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
3385 {
3386         struct lpfc_nodelist *ndlp;
3387         uint32_t data1;
3388
3389         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
3390                 if (lpfc_matchdid(vport, ndlp, did)) {
3391                         data1 = (((uint32_t) ndlp->nlp_state << 24) |
3392                                  ((uint32_t) ndlp->nlp_xri << 16) |
3393                                  ((uint32_t) ndlp->nlp_type << 8) |
3394                                  ((uint32_t) ndlp->nlp_rpi & 0xff));
3395                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3396                                          "0929 FIND node DID "
3397                                          "Data: x%p x%x x%x x%x\n",
3398                                          ndlp, ndlp->nlp_DID,
3399                                          ndlp->nlp_flag, data1);
3400                         return ndlp;
3401                 }
3402         }
3403
3404         /* FIND node did <did> NOT FOUND */
3405         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3406                          "0932 FIND node did x%x NOT FOUND.\n", did);
3407         return NULL;
3408 }
3409
3410 struct lpfc_nodelist *
3411 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
3412 {
3413         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3414         struct lpfc_nodelist *ndlp;
3415
3416         spin_lock_irq(shost->host_lock);
3417         ndlp = __lpfc_findnode_did(vport, did);
3418         spin_unlock_irq(shost->host_lock);
3419         return ndlp;
3420 }
3421
3422 struct lpfc_nodelist *
3423 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
3424 {
3425         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3426         struct lpfc_nodelist *ndlp;
3427
3428         ndlp = lpfc_findnode_did(vport, did);
3429         if (!ndlp) {
3430                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
3431                     lpfc_rscn_payload_check(vport, did) == 0)
3432                         return NULL;
3433                 ndlp = (struct lpfc_nodelist *)
3434                      mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
3435                 if (!ndlp)
3436                         return NULL;
3437                 lpfc_nlp_init(vport, ndlp, did);
3438                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
3439                 spin_lock_irq(shost->host_lock);
3440                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
3441                 spin_unlock_irq(shost->host_lock);
3442                 return ndlp;
3443         } else if (!NLP_CHK_NODE_ACT(ndlp)) {
3444                 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
3445                 if (!ndlp)
3446                         return NULL;
3447                 spin_lock_irq(shost->host_lock);
3448                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
3449                 spin_unlock_irq(shost->host_lock);
3450                 return ndlp;
3451         }
3452
3453         if ((vport->fc_flag & FC_RSCN_MODE) &&
3454             !(vport->fc_flag & FC_NDISC_ACTIVE)) {
3455                 if (lpfc_rscn_payload_check(vport, did)) {
3456                         /* If we've already recieved a PLOGI from this NPort
3457                          * we don't need to try to discover it again.
3458                          */
3459                         if (ndlp->nlp_flag & NLP_RCV_PLOGI)
3460                                 return NULL;
3461
3462                         /* Since this node is marked for discovery,
3463                          * delay timeout is not needed.
3464                          */
3465                         lpfc_cancel_retry_delay_tmo(vport, ndlp);
3466                         spin_lock_irq(shost->host_lock);
3467                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
3468                         spin_unlock_irq(shost->host_lock);
3469                 } else
3470                         ndlp = NULL;
3471         } else {
3472                 /* If we've already recieved a PLOGI from this NPort,
3473                  * or we are already in the process of discovery on it,
3474                  * we don't need to try to discover it again.
3475                  */
3476                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
3477                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
3478                     ndlp->nlp_flag & NLP_RCV_PLOGI)
3479                         return NULL;
3480                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
3481                 spin_lock_irq(shost->host_lock);
3482                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
3483                 spin_unlock_irq(shost->host_lock);
3484         }
3485         return ndlp;
3486 }
3487
3488 /* Build a list of nodes to discover based on the loopmap */
3489 void
3490 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
3491 {
3492         struct lpfc_hba  *phba = vport->phba;
3493         int j;
3494         uint32_t alpa, index;
3495
3496         if (!lpfc_is_link_up(phba))
3497                 return;
3498
3499         if (phba->fc_topology != TOPOLOGY_LOOP)
3500                 return;
3501
3502         /* Check for loop map present or not */
3503         if (phba->alpa_map[0]) {
3504                 for (j = 1; j <= phba->alpa_map[0]; j++) {
3505                         alpa = phba->alpa_map[j];
3506                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
3507                                 continue;
3508                         lpfc_setup_disc_node(vport, alpa);
3509                 }
3510         } else {
3511                 /* No alpamap, so try all alpa's */
3512                 for (j = 0; j < FC_MAXLOOP; j++) {
3513                         /* If cfg_scan_down is set, start from highest
3514                          * ALPA (0xef) to lowest (0x1).
3515                          */
3516                         if (vport->cfg_scan_down)
3517                                 index = j;
3518                         else
3519                                 index = FC_MAXLOOP - j - 1;
3520                         alpa = lpfcAlpaArray[index];
3521                         if ((vport->fc_myDID & 0xff) == alpa)
3522                                 continue;
3523                         lpfc_setup_disc_node(vport, alpa);
3524                 }
3525         }
3526         return;
3527 }
3528
3529 void
3530 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
3531 {
3532         LPFC_MBOXQ_t *mbox;
3533         struct lpfc_sli *psli = &phba->sli;
3534         struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
3535         struct lpfc_sli_ring *fcp_ring   = &psli->ring[psli->fcp_ring];
3536         struct lpfc_sli_ring *next_ring  = &psli->ring[psli->next_ring];
3537         int  rc;
3538
3539         /*
3540          * if it's not a physical port or if we already send
3541          * clear_la then don't send it.
3542          */
3543         if ((phba->link_state >= LPFC_CLEAR_LA) ||
3544             (vport->port_type != LPFC_PHYSICAL_PORT) ||
3545                 (phba->sli_rev == LPFC_SLI_REV4))
3546                 return;
3547
3548                         /* Link up discovery */
3549         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
3550                 phba->link_state = LPFC_CLEAR_LA;
3551                 lpfc_clear_la(phba, mbox);
3552                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
3553                 mbox->vport = vport;
3554                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3555                 if (rc == MBX_NOT_FINISHED) {
3556                         mempool_free(mbox, phba->mbox_mem_pool);
3557                         lpfc_disc_flush_list(vport);
3558                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
3559                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
3560                         next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
3561                         phba->link_state = LPFC_HBA_ERROR;
3562                 }
3563         }
3564 }
3565
3566 /* Reg_vpi to tell firmware to resume normal operations */
3567 void
3568 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
3569 {
3570         LPFC_MBOXQ_t *regvpimbox;
3571
3572         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3573         if (regvpimbox) {
3574                 lpfc_reg_vpi(vport, regvpimbox);
3575                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
3576                 regvpimbox->vport = vport;
3577                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
3578                                         == MBX_NOT_FINISHED) {
3579                         mempool_free(regvpimbox, phba->mbox_mem_pool);
3580                 }
3581         }
3582 }
3583
3584 /* Start Link up / RSCN discovery on NPR nodes */
3585 void
3586 lpfc_disc_start(struct lpfc_vport *vport)
3587 {
3588         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3589         struct lpfc_hba  *phba = vport->phba;
3590         uint32_t num_sent;
3591         uint32_t clear_la_pending;
3592         int did_changed;
3593
3594         if (!lpfc_is_link_up(phba))
3595                 return;
3596
3597         if (phba->link_state == LPFC_CLEAR_LA)
3598                 clear_la_pending = 1;
3599         else
3600                 clear_la_pending = 0;
3601
3602         if (vport->port_state < LPFC_VPORT_READY)
3603                 vport->port_state = LPFC_DISC_AUTH;
3604
3605         lpfc_set_disctmo(vport);
3606
3607         if (vport->fc_prevDID == vport->fc_myDID)
3608                 did_changed = 0;
3609         else
3610                 did_changed = 1;
3611
3612         vport->fc_prevDID = vport->fc_myDID;
3613         vport->num_disc_nodes = 0;
3614
3615         /* Start Discovery state <hba_state> */
3616         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3617                          "0202 Start Discovery hba state x%x "
3618                          "Data: x%x x%x x%x\n",
3619                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
3620                          vport->fc_adisc_cnt);
3621
3622         /* First do ADISCs - if any */
3623         num_sent = lpfc_els_disc_adisc(vport);
3624
3625         if (num_sent)
3626                 return;
3627
3628         /*
3629          * For SLI3, cmpl_reg_vpi will set port_state to READY, and
3630          * continue discovery.
3631          */
3632         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
3633             !(vport->fc_flag & FC_PT2PT) &&
3634             !(vport->fc_flag & FC_RSCN_MODE) &&
3635             (phba->sli_rev < LPFC_SLI_REV4)) {
3636                 lpfc_issue_reg_vpi(phba, vport);
3637                 return;
3638         }
3639
3640         /*
3641          * For SLI2, we need to set port_state to READY and continue
3642          * discovery.
3643          */
3644         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
3645                 /* If we get here, there is nothing to ADISC */
3646                 if (vport->port_type == LPFC_PHYSICAL_PORT)
3647                         lpfc_issue_clear_la(phba, vport);
3648
3649                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
3650                         vport->num_disc_nodes = 0;
3651                         /* go thru NPR nodes and issue ELS PLOGIs */
3652                         if (vport->fc_npr_cnt)
3653                                 lpfc_els_disc_plogi(vport);
3654
3655                         if (!vport->num_disc_nodes) {
3656                                 spin_lock_irq(shost->host_lock);
3657                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
3658                                 spin_unlock_irq(shost->host_lock);
3659                                 lpfc_can_disctmo(vport);
3660                         }
3661                 }
3662                 vport->port_state = LPFC_VPORT_READY;
3663         } else {
3664                 /* Next do PLOGIs - if any */
3665                 num_sent = lpfc_els_disc_plogi(vport);
3666
3667                 if (num_sent)
3668                         return;
3669
3670                 if (vport->fc_flag & FC_RSCN_MODE) {
3671                         /* Check to see if more RSCNs came in while we
3672                          * were processing this one.
3673                          */
3674                         if ((vport->fc_rscn_id_cnt == 0) &&
3675                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
3676                                 spin_lock_irq(shost->host_lock);
3677                                 vport->fc_flag &= ~FC_RSCN_MODE;
3678                                 spin_unlock_irq(shost->host_lock);
3679                                 lpfc_can_disctmo(vport);
3680                         } else
3681                                 lpfc_els_handle_rscn(vport);
3682                 }
3683         }
3684         return;
3685 }
3686
3687 /*
3688  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
3689  *  ring the match the sppecified nodelist.
3690  */
3691 static void
3692 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
3693 {
3694         LIST_HEAD(completions);
3695         struct lpfc_sli *psli;
3696         IOCB_t     *icmd;
3697         struct lpfc_iocbq    *iocb, *next_iocb;
3698         struct lpfc_sli_ring *pring;
3699
3700         psli = &phba->sli;
3701         pring = &psli->ring[LPFC_ELS_RING];
3702
3703         /* Error matching iocb on txq or txcmplq
3704          * First check the txq.
3705          */
3706         spin_lock_irq(&phba->hbalock);
3707         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
3708                 if (iocb->context1 != ndlp) {
3709                         continue;
3710                 }
3711                 icmd = &iocb->iocb;
3712                 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
3713                     (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
3714
3715                         list_move_tail(&iocb->list, &completions);
3716                         pring->txq_cnt--;
3717                 }
3718         }
3719
3720         /* Next check the txcmplq */
3721         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
3722                 if (iocb->context1 != ndlp) {
3723                         continue;
3724                 }
3725                 icmd = &iocb->iocb;
3726                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
3727                     icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
3728                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
3729                 }
3730         }
3731         spin_unlock_irq(&phba->hbalock);
3732
3733         /* Cancel all the IOCBs from the completions list */
3734         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
3735                               IOERR_SLI_ABORTED);
3736 }
3737
3738 static void
3739 lpfc_disc_flush_list(struct lpfc_vport *vport)
3740 {
3741         struct lpfc_nodelist *ndlp, *next_ndlp;
3742         struct lpfc_hba *phba = vport->phba;
3743
3744         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
3745                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
3746                                          nlp_listp) {
3747                         if (!NLP_CHK_NODE_ACT(ndlp))
3748                                 continue;
3749                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
3750                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
3751                                 lpfc_free_tx(phba, ndlp);
3752                         }
3753                 }
3754         }
3755 }
3756
3757 void
3758 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
3759 {
3760         lpfc_els_flush_rscn(vport);
3761         lpfc_els_flush_cmd(vport);
3762         lpfc_disc_flush_list(vport);
3763 }
3764
3765 /*****************************************************************************/
3766 /*
3767  * NAME:     lpfc_disc_timeout
3768  *
3769  * FUNCTION: Fibre Channel driver discovery timeout routine.
3770  *
3771  * EXECUTION ENVIRONMENT: interrupt only
3772  *
3773  * CALLED FROM:
3774  *      Timer function
3775  *
3776  * RETURNS:
3777  *      none
3778  */
3779 /*****************************************************************************/
3780 void
3781 lpfc_disc_timeout(unsigned long ptr)
3782 {
3783         struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
3784         struct lpfc_hba   *phba = vport->phba;
3785         uint32_t tmo_posted;
3786         unsigned long flags = 0;
3787
3788         if (unlikely(!phba))
3789                 return;
3790
3791         spin_lock_irqsave(&vport->work_port_lock, flags);
3792         tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
3793         if (!tmo_posted)
3794                 vport->work_port_events |= WORKER_DISC_TMO;
3795         spin_unlock_irqrestore(&vport->work_port_lock, flags);
3796
3797         if (!tmo_posted)
3798                 lpfc_worker_wake_up(phba);
3799         return;
3800 }
3801
3802 static void
3803 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
3804 {
3805         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3806         struct lpfc_hba  *phba = vport->phba;
3807         struct lpfc_sli  *psli = &phba->sli;
3808         struct lpfc_nodelist *ndlp, *next_ndlp;
3809         LPFC_MBOXQ_t *initlinkmbox;
3810         int rc, clrlaerr = 0;
3811
3812         if (!(vport->fc_flag & FC_DISC_TMO))
3813                 return;
3814
3815         spin_lock_irq(shost->host_lock);
3816         vport->fc_flag &= ~FC_DISC_TMO;
3817         spin_unlock_irq(shost->host_lock);
3818
3819         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3820                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
3821                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
3822
3823         switch (vport->port_state) {
3824
3825         case LPFC_LOCAL_CFG_LINK:
3826         /* port_state is identically  LPFC_LOCAL_CFG_LINK while waiting for
3827          * FAN
3828          */
3829                                 /* FAN timeout */
3830                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
3831                                  "0221 FAN timeout\n");
3832                 /* Start discovery by sending FLOGI, clean up old rpis */
3833                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
3834                                          nlp_listp) {
3835                         if (!NLP_CHK_NODE_ACT(ndlp))
3836                                 continue;
3837                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
3838                                 continue;
3839                         if (ndlp->nlp_type & NLP_FABRIC) {
3840                                 /* Clean up the ndlp on Fabric connections */
3841                                 lpfc_drop_node(vport, ndlp);
3842
3843                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
3844                                 /* Fail outstanding IO now since device
3845                                  * is marked for PLOGI.
3846                                  */
3847                                 lpfc_unreg_rpi(vport, ndlp);
3848                         }
3849                 }
3850                 if (vport->port_state != LPFC_FLOGI) {
3851                         lpfc_initial_flogi(vport);
3852                         return;
3853                 }
3854                 break;
3855
3856         case LPFC_FDISC:
3857         case LPFC_FLOGI:
3858         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
3859                 /* Initial FLOGI timeout */
3860                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3861                                  "0222 Initial %s timeout\n",
3862                                  vport->vpi ? "FDISC" : "FLOGI");
3863
3864                 /* Assume no Fabric and go on with discovery.
3865                  * Check for outstanding ELS FLOGI to abort.
3866                  */
3867
3868                 /* FLOGI failed, so just use loop map to make discovery list */
3869                 lpfc_disc_list_loopmap(vport);
3870
3871                 /* Start discovery */
3872                 lpfc_disc_start(vport);
3873                 break;
3874
3875         case LPFC_FABRIC_CFG_LINK:
3876         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
3877            NameServer login */
3878                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3879                                  "0223 Timeout while waiting for "
3880                                  "NameServer login\n");
3881                 /* Next look for NameServer ndlp */
3882                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
3883                 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
3884                         lpfc_els_abort(phba, ndlp);
3885
3886                 /* ReStart discovery */
3887                 goto restart_disc;
3888
3889         case LPFC_NS_QRY:
3890         /* Check for wait for NameServer Rsp timeout */
3891                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3892                                  "0224 NameServer Query timeout "
3893                                  "Data: x%x x%x\n",
3894                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
3895
3896                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
3897                         /* Try it one more time */
3898                         vport->fc_ns_retry++;
3899                         rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
3900                                          vport->fc_ns_retry, 0);
3901                         if (rc == 0)
3902                                 break;
3903                 }
3904                 vport->fc_ns_retry = 0;
3905
3906 restart_disc:
3907                 /*
3908                  * Discovery is over.
3909                  * set port_state to PORT_READY if SLI2.
3910                  * cmpl_reg_vpi will set port_state to READY for SLI3.
3911                  */
3912                 if (phba->sli_rev < LPFC_SLI_REV4) {
3913                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
3914                                 lpfc_issue_reg_vpi(phba, vport);
3915                         else  { /* NPIV Not enabled */
3916                                 lpfc_issue_clear_la(phba, vport);
3917                                 vport->port_state = LPFC_VPORT_READY;
3918                         }
3919                 }
3920
3921                 /* Setup and issue mailbox INITIALIZE LINK command */
3922                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3923                 if (!initlinkmbox) {
3924                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3925                                          "0206 Device Discovery "
3926                                          "completion error\n");
3927                         phba->link_state = LPFC_HBA_ERROR;
3928                         break;
3929                 }
3930
3931                 lpfc_linkdown(phba);
3932                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
3933                                phba->cfg_link_speed);
3934                 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
3935                 initlinkmbox->vport = vport;
3936                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3937                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
3938                 lpfc_set_loopback_flag(phba);
3939                 if (rc == MBX_NOT_FINISHED)
3940                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
3941
3942                 break;
3943
3944         case LPFC_DISC_AUTH:
3945         /* Node Authentication timeout */
3946                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3947                                  "0227 Node Authentication timeout\n");
3948                 lpfc_disc_flush_list(vport);
3949
3950                 /*
3951                  * set port_state to PORT_READY if SLI2.
3952                  * cmpl_reg_vpi will set port_state to READY for SLI3.
3953                  */
3954                 if (phba->sli_rev < LPFC_SLI_REV4) {
3955                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
3956                                 lpfc_issue_reg_vpi(phba, vport);
3957                         else  { /* NPIV Not enabled */
3958                                 lpfc_issue_clear_la(phba, vport);
3959                                 vport->port_state = LPFC_VPORT_READY;
3960                         }
3961                 }
3962                 break;
3963
3964         case LPFC_VPORT_READY:
3965                 if (vport->fc_flag & FC_RSCN_MODE) {
3966                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3967                                          "0231 RSCN timeout Data: x%x "
3968                                          "x%x\n",
3969                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
3970
3971                         /* Cleanup any outstanding ELS commands */
3972                         lpfc_els_flush_cmd(vport);
3973
3974                         lpfc_els_flush_rscn(vport);
3975                         lpfc_disc_flush_list(vport);
3976                 }
3977                 break;
3978
3979         default:
3980                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3981                                  "0273 Unexpected discovery timeout, "
3982                                  "vport State x%x\n", vport->port_state);
3983                 break;
3984         }
3985
3986         switch (phba->link_state) {
3987         case LPFC_CLEAR_LA:
3988                                 /* CLEAR LA timeout */
3989                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3990                                  "0228 CLEAR LA timeout\n");
3991                 clrlaerr = 1;
3992                 break;
3993
3994         case LPFC_LINK_UP:
3995                 lpfc_issue_clear_la(phba, vport);
3996                 /* Drop thru */
3997         case LPFC_LINK_UNKNOWN:
3998         case LPFC_WARM_START:
3999         case LPFC_INIT_START:
4000         case LPFC_INIT_MBX_CMDS:
4001         case LPFC_LINK_DOWN:
4002         case LPFC_HBA_ERROR:
4003                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4004                                  "0230 Unexpected timeout, hba link "
4005                                  "state x%x\n", phba->link_state);
4006                 clrlaerr = 1;
4007                 break;
4008
4009         case LPFC_HBA_READY:
4010                 break;
4011         }
4012
4013         if (clrlaerr) {
4014                 lpfc_disc_flush_list(vport);
4015                 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
4016                 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
4017                 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
4018                 vport->port_state = LPFC_VPORT_READY;
4019         }
4020
4021         return;
4022 }
4023
4024 /*
4025  * This routine handles processing a NameServer REG_LOGIN mailbox
4026  * command upon completion. It is setup in the LPFC_MBOXQ
4027  * as the completion routine when the command is
4028  * handed off to the SLI layer.
4029  */
4030 void
4031 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4032 {
4033         MAILBOX_t *mb = &pmb->u.mb;
4034         struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *) (pmb->context1);
4035         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
4036         struct lpfc_vport    *vport = pmb->vport;
4037
4038         pmb->context1 = NULL;
4039
4040         ndlp->nlp_rpi = mb->un.varWords[0];
4041         ndlp->nlp_flag |= NLP_RPI_VALID;
4042         ndlp->nlp_type |= NLP_FABRIC;
4043         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4044
4045         /*
4046          * Start issuing Fabric-Device Management Interface (FDMI) command to
4047          * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
4048          * fdmi-on=2 (supporting RPA/hostnmae)
4049          */
4050
4051         if (vport->cfg_fdmi_on == 1)
4052                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
4053         else
4054                 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
4055
4056         /* decrement the node reference count held for this callback
4057          * function.
4058          */
4059         lpfc_nlp_put(ndlp);
4060         lpfc_mbuf_free(phba, mp->virt, mp->phys);
4061         kfree(mp);
4062         mempool_free(pmb, phba->mbox_mem_pool);
4063
4064         return;
4065 }
4066
4067 static int
4068 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
4069 {
4070         uint16_t *rpi = param;
4071
4072         return ndlp->nlp_rpi == *rpi;
4073 }
4074
4075 static int
4076 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
4077 {
4078         return memcmp(&ndlp->nlp_portname, param,
4079                       sizeof(ndlp->nlp_portname)) == 0;
4080 }
4081
4082 static struct lpfc_nodelist *
4083 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
4084 {
4085         struct lpfc_nodelist *ndlp;
4086
4087         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
4088                 if (filter(ndlp, param))
4089                         return ndlp;
4090         }
4091         return NULL;
4092 }
4093
4094 /*
4095  * This routine looks up the ndlp lists for the given RPI. If rpi found it
4096  * returns the node list element pointer else return NULL.
4097  */
4098 struct lpfc_nodelist *
4099 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
4100 {
4101         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
4102 }
4103
4104 /*
4105  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
4106  * returns the node element list pointer else return NULL.
4107  */
4108 struct lpfc_nodelist *
4109 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
4110 {
4111         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4112         struct lpfc_nodelist *ndlp;
4113
4114         spin_lock_irq(shost->host_lock);
4115         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
4116         spin_unlock_irq(shost->host_lock);
4117         return ndlp;
4118 }
4119
4120 void
4121 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4122               uint32_t did)
4123 {
4124         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
4125
4126         lpfc_initialize_node(vport, ndlp, did);
4127         INIT_LIST_HEAD(&ndlp->nlp_listp);
4128
4129         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4130                 "node init:       did:x%x",
4131                 ndlp->nlp_DID, 0, 0);
4132
4133         return;
4134 }
4135
4136 /* This routine releases all resources associated with a specifc NPort's ndlp
4137  * and mempool_free's the nodelist.
4138  */
4139 static void
4140 lpfc_nlp_release(struct kref *kref)
4141 {
4142         struct lpfc_hba *phba;
4143         unsigned long flags;
4144         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
4145                                                   kref);
4146
4147         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4148                 "node release:    did:x%x flg:x%x type:x%x",
4149                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4150
4151         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
4152                         "0279 lpfc_nlp_release: ndlp:x%p "
4153                         "usgmap:x%x refcnt:%d\n",
4154                         (void *)ndlp, ndlp->nlp_usg_map,
4155                         atomic_read(&ndlp->kref.refcount));
4156
4157         /* remove ndlp from action. */
4158         lpfc_nlp_remove(ndlp->vport, ndlp);
4159
4160         /* clear the ndlp active flag for all release cases */
4161         phba = ndlp->phba;
4162         spin_lock_irqsave(&phba->ndlp_lock, flags);
4163         NLP_CLR_NODE_ACT(ndlp);
4164         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4165
4166         /* free ndlp memory for final ndlp release */
4167         if (NLP_CHK_FREE_REQ(ndlp)) {
4168                 kfree(ndlp->lat_data);
4169                 mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
4170         }
4171 }
4172
4173 /* This routine bumps the reference count for a ndlp structure to ensure
4174  * that one discovery thread won't free a ndlp while another discovery thread
4175  * is using it.
4176  */
4177 struct lpfc_nodelist *
4178 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
4179 {
4180         struct lpfc_hba *phba;
4181         unsigned long flags;
4182
4183         if (ndlp) {
4184                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4185                         "node get:        did:x%x flg:x%x refcnt:x%x",
4186                         ndlp->nlp_DID, ndlp->nlp_flag,
4187                         atomic_read(&ndlp->kref.refcount));
4188                 /* The check of ndlp usage to prevent incrementing the
4189                  * ndlp reference count that is in the process of being
4190                  * released.
4191                  */
4192                 phba = ndlp->phba;
4193                 spin_lock_irqsave(&phba->ndlp_lock, flags);
4194                 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
4195                         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4196                         lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
4197                                 "0276 lpfc_nlp_get: ndlp:x%p "
4198                                 "usgmap:x%x refcnt:%d\n",
4199                                 (void *)ndlp, ndlp->nlp_usg_map,
4200                                 atomic_read(&ndlp->kref.refcount));
4201                         return NULL;
4202                 } else
4203                         kref_get(&ndlp->kref);
4204                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4205         }
4206         return ndlp;
4207 }
4208
4209 /* This routine decrements the reference count for a ndlp structure. If the
4210  * count goes to 0, this indicates the the associated nodelist should be
4211  * freed. Returning 1 indicates the ndlp resource has been released; on the
4212  * other hand, returning 0 indicates the ndlp resource has not been released
4213  * yet.
4214  */
4215 int
4216 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
4217 {
4218         struct lpfc_hba *phba;
4219         unsigned long flags;
4220
4221         if (!ndlp)
4222                 return 1;
4223
4224         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4225         "node put:        did:x%x flg:x%x refcnt:x%x",
4226                 ndlp->nlp_DID, ndlp->nlp_flag,
4227                 atomic_read(&ndlp->kref.refcount));
4228         phba = ndlp->phba;
4229         spin_lock_irqsave(&phba->ndlp_lock, flags);
4230         /* Check the ndlp memory free acknowledge flag to avoid the
4231          * possible race condition that kref_put got invoked again
4232          * after previous one has done ndlp memory free.
4233          */
4234         if (NLP_CHK_FREE_ACK(ndlp)) {
4235                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4236                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
4237                                 "0274 lpfc_nlp_put: ndlp:x%p "
4238                                 "usgmap:x%x refcnt:%d\n",
4239                                 (void *)ndlp, ndlp->nlp_usg_map,
4240                                 atomic_read(&ndlp->kref.refcount));
4241                 return 1;
4242         }
4243         /* Check the ndlp inactivate log flag to avoid the possible
4244          * race condition that kref_put got invoked again after ndlp
4245          * is already in inactivating state.
4246          */
4247         if (NLP_CHK_IACT_REQ(ndlp)) {
4248                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4249                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
4250                                 "0275 lpfc_nlp_put: ndlp:x%p "
4251                                 "usgmap:x%x refcnt:%d\n",
4252                                 (void *)ndlp, ndlp->nlp_usg_map,
4253                                 atomic_read(&ndlp->kref.refcount));
4254                 return 1;
4255         }
4256         /* For last put, mark the ndlp usage flags to make sure no
4257          * other kref_get and kref_put on the same ndlp shall get
4258          * in between the process when the final kref_put has been
4259          * invoked on this ndlp.
4260          */
4261         if (atomic_read(&ndlp->kref.refcount) == 1) {
4262                 /* Indicate ndlp is put to inactive state. */
4263                 NLP_SET_IACT_REQ(ndlp);
4264                 /* Acknowledge ndlp memory free has been seen. */
4265                 if (NLP_CHK_FREE_REQ(ndlp))
4266                         NLP_SET_FREE_ACK(ndlp);
4267         }
4268         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4269         /* Note, the kref_put returns 1 when decrementing a reference
4270          * count that was 1, it invokes the release callback function,
4271          * but it still left the reference count as 1 (not actually
4272          * performs the last decrementation). Otherwise, it actually
4273          * decrements the reference count and returns 0.
4274          */
4275         return kref_put(&ndlp->kref, lpfc_nlp_release);
4276 }
4277
4278 /* This routine free's the specified nodelist if it is not in use
4279  * by any other discovery thread. This routine returns 1 if the
4280  * ndlp has been freed. A return value of 0 indicates the ndlp is
4281  * not yet been released.
4282  */
4283 int
4284 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
4285 {
4286         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4287                 "node not used:   did:x%x flg:x%x refcnt:x%x",
4288                 ndlp->nlp_DID, ndlp->nlp_flag,
4289                 atomic_read(&ndlp->kref.refcount));
4290         if (atomic_read(&ndlp->kref.refcount) == 1)
4291                 if (lpfc_nlp_put(ndlp))
4292                         return 1;
4293         return 0;
4294 }
4295
4296 /**
4297  * lpfc_fcf_inuse - Check if FCF can be unregistered.
4298  * @phba: Pointer to hba context object.
4299  *
4300  * This function iterate through all FC nodes associated
4301  * will all vports to check if there is any node with
4302  * fc_rports associated with it. If there is an fc_rport
4303  * associated with the node, then the node is either in
4304  * discovered state or its devloss_timer is pending.
4305  */
4306 static int
4307 lpfc_fcf_inuse(struct lpfc_hba *phba)
4308 {
4309         struct lpfc_vport **vports;
4310         int i, ret = 0;
4311         struct lpfc_nodelist *ndlp;
4312         struct Scsi_Host  *shost;
4313
4314         vports = lpfc_create_vport_work_array(phba);
4315
4316         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4317                 shost = lpfc_shost_from_vport(vports[i]);
4318                 spin_lock_irq(shost->host_lock);
4319                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
4320                         if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport &&
4321                           (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
4322                                 ret = 1;
4323                                 spin_unlock_irq(shost->host_lock);
4324                                 goto out;
4325                         }
4326                 }
4327                 spin_unlock_irq(shost->host_lock);
4328         }
4329 out:
4330         lpfc_destroy_vport_work_array(phba, vports);
4331         return ret;
4332 }
4333
4334 /**
4335  * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
4336  * @phba: Pointer to hba context object.
4337  * @mboxq: Pointer to mailbox object.
4338  *
4339  * This function frees memory associated with the mailbox command.
4340  */
4341 static void
4342 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
4343 {
4344         struct lpfc_vport *vport = mboxq->vport;
4345
4346         if (mboxq->u.mb.mbxStatus) {
4347                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4348                         "2555 UNREG_VFI mbxStatus error x%x "
4349                         "HBA state x%x\n",
4350                         mboxq->u.mb.mbxStatus, vport->port_state);
4351         }
4352         mempool_free(mboxq, phba->mbox_mem_pool);
4353         return;
4354 }
4355
4356 /**
4357  * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
4358  * @phba: Pointer to hba context object.
4359  * @mboxq: Pointer to mailbox object.
4360  *
4361  * This function frees memory associated with the mailbox command.
4362  */
4363 static void
4364 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
4365 {
4366         struct lpfc_vport *vport = mboxq->vport;
4367
4368         if (mboxq->u.mb.mbxStatus) {
4369                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4370                         "2550 UNREG_FCFI mbxStatus error x%x "
4371                         "HBA state x%x\n",
4372                         mboxq->u.mb.mbxStatus, vport->port_state);
4373         }
4374         mempool_free(mboxq, phba->mbox_mem_pool);
4375         return;
4376 }
4377
4378 /**
4379  * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
4380  * @phba: Pointer to hba context object.
4381  *
4382  * This function check if there are any connected remote port for the FCF and
4383  * if all the devices are disconnected, this function unregister FCFI.
4384  * This function also tries to use another FCF for discovery.
4385  */
4386 void
4387 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
4388 {
4389         LPFC_MBOXQ_t *mbox;
4390         int rc;
4391         struct lpfc_vport **vports;
4392         int i;
4393
4394         spin_lock_irq(&phba->hbalock);
4395         /*
4396          * If HBA is not running in FIP mode or
4397          * If HBA does not support FCoE or
4398          * If FCF is not registered.
4399          * do nothing.
4400          */
4401         if (!(phba->hba_flag & HBA_FCOE_SUPPORT) ||
4402                 !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
4403                 (phba->cfg_enable_fip == 0)) {
4404                 spin_unlock_irq(&phba->hbalock);
4405                 return;
4406         }
4407         spin_unlock_irq(&phba->hbalock);
4408
4409         if (lpfc_fcf_inuse(phba))
4410                 return;
4411
4412
4413         /* Unregister VPIs */
4414         vports = lpfc_create_vport_work_array(phba);
4415         if (vports &&
4416                 (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
4417                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4418                         lpfc_mbx_unreg_vpi(vports[i]);
4419                         vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
4420                         vports[i]->vfi_state &= ~LPFC_VFI_REGISTERED;
4421                 }
4422         lpfc_destroy_vport_work_array(phba, vports);
4423
4424         /* Unregister VFI */
4425         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4426         if (!mbox) {
4427                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4428                         "2556 UNREG_VFI mbox allocation failed"
4429                         "HBA state x%x\n",
4430                         phba->pport->port_state);
4431                 return;
4432         }
4433
4434         lpfc_unreg_vfi(mbox, phba->pport->vfi);
4435         mbox->vport = phba->pport;
4436         mbox->mbox_cmpl = lpfc_unregister_vfi_cmpl;
4437
4438         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4439         if (rc == MBX_NOT_FINISHED) {
4440                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4441                         "2557 UNREG_VFI issue mbox failed rc x%x "
4442                         "HBA state x%x\n",
4443                         rc, phba->pport->port_state);
4444                 mempool_free(mbox, phba->mbox_mem_pool);
4445                 return;
4446         }
4447
4448         /* Unregister FCF */
4449         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4450         if (!mbox) {
4451                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4452                         "2551 UNREG_FCFI mbox allocation failed"
4453                         "HBA state x%x\n",
4454                         phba->pport->port_state);
4455                 return;
4456         }
4457
4458         lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
4459         mbox->vport = phba->pport;
4460         mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
4461         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4462
4463         if (rc == MBX_NOT_FINISHED) {
4464                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4465                         "2552 UNREG_FCFI issue mbox failed rc x%x "
4466                         "HBA state x%x\n",
4467                         rc, phba->pport->port_state);
4468                 mempool_free(mbox, phba->mbox_mem_pool);
4469                 return;
4470         }
4471
4472         spin_lock_irq(&phba->hbalock);
4473         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_REGISTERED |
4474                 FCF_DISCOVERED | FCF_BOOT_ENABLE | FCF_IN_USE |
4475                 FCF_VALID_VLAN);
4476         spin_unlock_irq(&phba->hbalock);
4477
4478         /*
4479          * If driver is not unloading, check if there is any other
4480          * FCF record that can be used for discovery.
4481          */
4482         if ((phba->pport->load_flag & FC_UNLOADING) ||
4483                 (phba->link_state < LPFC_LINK_UP))
4484                 return;
4485
4486         rc = lpfc_sli4_read_fcf_record(phba, LPFC_FCOE_FCF_GET_FIRST);
4487
4488         if (rc)
4489                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4490                         "2553 lpfc_unregister_unused_fcf failed to read FCF"
4491                         " record HBA state x%x\n",
4492                         phba->pport->port_state);
4493 }
4494
4495 /**
4496  * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
4497  * @phba: Pointer to hba context object.
4498  * @buff: Buffer containing the FCF connection table as in the config
4499  *         region.
4500  * This function create driver data structure for the FCF connection
4501  * record table read from config region 23.
4502  */
4503 static void
4504 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
4505         uint8_t *buff)
4506 {
4507         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
4508         struct lpfc_fcf_conn_hdr *conn_hdr;
4509         struct lpfc_fcf_conn_rec *conn_rec;
4510         uint32_t record_count;
4511         int i;
4512
4513         /* Free the current connect table */
4514         list_for_each_entry_safe(conn_entry, next_conn_entry,
4515                 &phba->fcf_conn_rec_list, list)
4516                 kfree(conn_entry);
4517
4518         conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
4519         record_count = conn_hdr->length * sizeof(uint32_t)/
4520                 sizeof(struct lpfc_fcf_conn_rec);
4521
4522         conn_rec = (struct lpfc_fcf_conn_rec *)
4523                 (buff + sizeof(struct lpfc_fcf_conn_hdr));
4524
4525         for (i = 0; i < record_count; i++) {
4526                 if (!(conn_rec[i].flags & FCFCNCT_VALID))
4527                         continue;
4528                 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
4529                         GFP_KERNEL);
4530                 if (!conn_entry) {
4531                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4532                                 "2566 Failed to allocate connection"
4533                                 " table entry\n");
4534                         return;
4535                 }
4536
4537                 memcpy(&conn_entry->conn_rec, &conn_rec[i],
4538                         sizeof(struct lpfc_fcf_conn_rec));
4539                 conn_entry->conn_rec.vlan_tag =
4540                         le16_to_cpu(conn_entry->conn_rec.vlan_tag) & 0xFFF;
4541                 conn_entry->conn_rec.flags =
4542                         le16_to_cpu(conn_entry->conn_rec.flags);
4543                 list_add_tail(&conn_entry->list,
4544                         &phba->fcf_conn_rec_list);
4545         }
4546 }
4547
4548 /**
4549  * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
4550  * @phba: Pointer to hba context object.
4551  * @buff: Buffer containing the FCoE parameter data structure.
4552  *
4553  *  This function update driver data structure with config
4554  *  parameters read from config region 23.
4555  */
4556 static void
4557 lpfc_read_fcoe_param(struct lpfc_hba *phba,
4558                         uint8_t *buff)
4559 {
4560         struct lpfc_fip_param_hdr *fcoe_param_hdr;
4561         struct lpfc_fcoe_params *fcoe_param;
4562
4563         fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
4564                 buff;
4565         fcoe_param = (struct lpfc_fcoe_params *)
4566                 (buff + sizeof(struct lpfc_fip_param_hdr));
4567
4568         if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
4569                 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
4570                 return;
4571
4572         if (bf_get(lpfc_fip_param_hdr_fipp_mode, fcoe_param_hdr) ==
4573                         FIPP_MODE_ON)
4574                 phba->cfg_enable_fip = 1;
4575
4576         if (bf_get(lpfc_fip_param_hdr_fipp_mode, fcoe_param_hdr) ==
4577                 FIPP_MODE_OFF)
4578                 phba->cfg_enable_fip = 0;
4579
4580         if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
4581                 phba->valid_vlan = 1;
4582                 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
4583                         0xFFF;
4584         }
4585
4586         phba->fc_map[0] = fcoe_param->fc_map[0];
4587         phba->fc_map[1] = fcoe_param->fc_map[1];
4588         phba->fc_map[2] = fcoe_param->fc_map[2];
4589         return;
4590 }
4591
4592 /**
4593  * lpfc_get_rec_conf23 - Get a record type in config region data.
4594  * @buff: Buffer containing config region 23 data.
4595  * @size: Size of the data buffer.
4596  * @rec_type: Record type to be searched.
4597  *
4598  * This function searches config region data to find the begining
4599  * of the record specified by record_type. If record found, this
4600  * function return pointer to the record else return NULL.
4601  */
4602 static uint8_t *
4603 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
4604 {
4605         uint32_t offset = 0, rec_length;
4606
4607         if ((buff[0] == LPFC_REGION23_LAST_REC) ||
4608                 (size < sizeof(uint32_t)))
4609                 return NULL;
4610
4611         rec_length = buff[offset + 1];
4612
4613         /*
4614          * One TLV record has one word header and number of data words
4615          * specified in the rec_length field of the record header.
4616          */
4617         while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
4618                 <= size) {
4619                 if (buff[offset] == rec_type)
4620                         return &buff[offset];
4621
4622                 if (buff[offset] == LPFC_REGION23_LAST_REC)
4623                         return NULL;
4624
4625                 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
4626                 rec_length = buff[offset + 1];
4627         }
4628         return NULL;
4629 }
4630
4631 /**
4632  * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
4633  * @phba: Pointer to lpfc_hba data structure.
4634  * @buff: Buffer containing config region 23 data.
4635  * @size: Size of the data buffer.
4636  *
4637  * This fuction parse the FCoE config parameters in config region 23 and
4638  * populate driver data structure with the parameters.
4639  */
4640 void
4641 lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
4642                 uint8_t *buff,
4643                 uint32_t size)
4644 {
4645         uint32_t offset = 0, rec_length;
4646         uint8_t *rec_ptr;
4647
4648         /*
4649          * If data size is less than 2 words signature and version cannot be
4650          * verified.
4651          */
4652         if (size < 2*sizeof(uint32_t))
4653                 return;
4654
4655         /* Check the region signature first */
4656         if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
4657                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4658                         "2567 Config region 23 has bad signature\n");
4659                 return;
4660         }
4661
4662         offset += 4;
4663
4664         /* Check the data structure version */
4665         if (buff[offset] != LPFC_REGION23_VERSION) {
4666                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4667                         "2568 Config region 23 has bad version\n");
4668                 return;
4669         }
4670         offset += 4;
4671
4672         rec_length = buff[offset + 1];
4673
4674         /* Read FCoE param record */
4675         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
4676                         size - offset, FCOE_PARAM_TYPE);
4677         if (rec_ptr)
4678                 lpfc_read_fcoe_param(phba, rec_ptr);
4679
4680         /* Read FCF connection table */
4681         rec_ptr = lpfc_get_rec_conf23(&buff[offset],
4682                 size - offset, FCOE_CONN_TBL_TYPE);
4683         if (rec_ptr)
4684                 lpfc_read_fcf_conn_tbl(phba, rec_ptr);
4685
4686 }