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