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