Merge branch 'for-linus' of git://git.open-osd.org/linux-open-osd
[linux-2.6.git] / drivers / scsi / lpfc / lpfc_hbadisc.c
1 /*******************************************************************
2  * This file is part of the Emulex Linux Device Driver for         *
3  * Fibre Channel Host Bus Adapters.                                *
4  * Copyright (C) 2004-2009 Emulex.  All rights reserved.           *
5  * EMULEX and SLI are trademarks of Emulex.                        *
6  * www.emulex.com                                                  *
7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
8  *                                                                 *
9  * This program is free software; you can redistribute it and/or   *
10  * modify it under the terms of version 2 of the GNU General       *
11  * Public License as published by the Free Software Foundation.    *
12  * This program is distributed in the hope that it will be useful. *
13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
18  * more details, a copy of which can be found in the file COPYING  *
19  * included with this package.                                     *
20  *******************************************************************/
21
22 #include <linux/blkdev.h>
23 #include <linux/pci.h>
24 #include <linux/kthread.h>
25 #include <linux/interrupt.h>
26
27 #include <scsi/scsi.h>
28 #include <scsi/scsi_device.h>
29 #include <scsi/scsi_host.h>
30 #include <scsi/scsi_transport_fc.h>
31
32 #include "lpfc_hw4.h"
33 #include "lpfc_hw.h"
34 #include "lpfc_nl.h"
35 #include "lpfc_disc.h"
36 #include "lpfc_sli.h"
37 #include "lpfc_sli4.h"
38 #include "lpfc_scsi.h"
39 #include "lpfc.h"
40 #include "lpfc_logmsg.h"
41 #include "lpfc_crtn.h"
42 #include "lpfc_vport.h"
43 #include "lpfc_debugfs.h"
44
45 /* AlpaArray for assignment of scsid for scan-down and bind_method */
46 static uint8_t lpfcAlpaArray[] = {
47         0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
48         0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
49         0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
50         0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
51         0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
52         0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
53         0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
54         0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
55         0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
56         0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
57         0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
58         0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
59         0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
60 };
61
62 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
63 static void lpfc_disc_flush_list(struct lpfc_vport *vport);
64 static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *);
65
66 void
67 lpfc_terminate_rport_io(struct fc_rport *rport)
68 {
69         struct lpfc_rport_data *rdata;
70         struct lpfc_nodelist * ndlp;
71         struct lpfc_hba *phba;
72
73         rdata = rport->dd_data;
74         ndlp = rdata->pnode;
75
76         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
77                 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
78                         printk(KERN_ERR "Cannot find remote node"
79                         " to terminate I/O Data x%x\n",
80                         rport->port_id);
81                 return;
82         }
83
84         phba  = ndlp->phba;
85
86         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
87                 "rport terminate: sid:x%x did:x%x flg:x%x",
88                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
89
90         if (ndlp->nlp_sid != NLP_NO_SID) {
91                 lpfc_sli_abort_iocb(ndlp->vport,
92                         &phba->sli.ring[phba->sli.fcp_ring],
93                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
94         }
95 }
96
97 /*
98  * This function will be called when dev_loss_tmo fire.
99  */
100 void
101 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
102 {
103         struct lpfc_rport_data *rdata;
104         struct lpfc_nodelist * ndlp;
105         struct lpfc_vport *vport;
106         struct lpfc_hba   *phba;
107         struct lpfc_work_evt *evtp;
108         int  put_node;
109         int  put_rport;
110
111         rdata = rport->dd_data;
112         ndlp = rdata->pnode;
113         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
114                 return;
115
116         vport = ndlp->vport;
117         phba  = vport->phba;
118
119         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
120                 "rport devlosscb: sid:x%x did:x%x flg:x%x",
121                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
122
123         /* Don't defer this if we are in the process of deleting the vport
124          * or unloading the driver. The unload will cleanup the node
125          * appropriately we just need to cleanup the ndlp rport info here.
126          */
127         if (vport->load_flag & FC_UNLOADING) {
128                 put_node = rdata->pnode != NULL;
129                 put_rport = ndlp->rport != NULL;
130                 rdata->pnode = NULL;
131                 ndlp->rport = NULL;
132                 if (put_node)
133                         lpfc_nlp_put(ndlp);
134                 if (put_rport)
135                         put_device(&rport->dev);
136                 return;
137         }
138
139         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
140                 return;
141
142         evtp = &ndlp->dev_loss_evt;
143
144         if (!list_empty(&evtp->evt_listp))
145                 return;
146
147         spin_lock_irq(&phba->hbalock);
148         /* We need to hold the node by incrementing the reference
149          * count until this queued work is done
150          */
151         evtp->evt_arg1  = lpfc_nlp_get(ndlp);
152         if (evtp->evt_arg1) {
153                 evtp->evt = LPFC_EVT_DEV_LOSS;
154                 list_add_tail(&evtp->evt_listp, &phba->work_list);
155                 lpfc_worker_wake_up(phba);
156         }
157         spin_unlock_irq(&phba->hbalock);
158
159         return;
160 }
161
162 /*
163  * This function is called from the worker thread when dev_loss_tmo
164  * expire.
165  */
166 static void
167 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
168 {
169         struct lpfc_rport_data *rdata;
170         struct fc_rport   *rport;
171         struct lpfc_vport *vport;
172         struct lpfc_hba   *phba;
173         uint8_t *name;
174         int  put_node;
175         int  put_rport;
176         int warn_on = 0;
177
178         rport = ndlp->rport;
179
180         if (!rport)
181                 return;
182
183         rdata = rport->dd_data;
184         name = (uint8_t *) &ndlp->nlp_portname;
185         vport = ndlp->vport;
186         phba  = vport->phba;
187
188         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
189                 "rport devlosstmo:did:x%x type:x%x id:x%x",
190                 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
191
192         /* Don't defer this if we are in the process of deleting the vport
193          * or unloading the driver. The unload will cleanup the node
194          * appropriately we just need to cleanup the ndlp rport info here.
195          */
196         if (vport->load_flag & FC_UNLOADING) {
197                 if (ndlp->nlp_sid != NLP_NO_SID) {
198                         /* flush the target */
199                         lpfc_sli_abort_iocb(vport,
200                                         &phba->sli.ring[phba->sli.fcp_ring],
201                                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
202                 }
203                 put_node = rdata->pnode != NULL;
204                 put_rport = ndlp->rport != NULL;
205                 rdata->pnode = NULL;
206                 ndlp->rport = NULL;
207                 if (put_node)
208                         lpfc_nlp_put(ndlp);
209                 if (put_rport)
210                         put_device(&rport->dev);
211                 return;
212         }
213
214         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
215                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
216                                  "0284 Devloss timeout Ignored on "
217                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
218                                  "NPort x%x\n",
219                                  *name, *(name+1), *(name+2), *(name+3),
220                                  *(name+4), *(name+5), *(name+6), *(name+7),
221                                  ndlp->nlp_DID);
222                 return;
223         }
224
225         if (ndlp->nlp_type & NLP_FABRIC) {
226                 /* We will clean up these Nodes in linkup */
227                 put_node = rdata->pnode != NULL;
228                 put_rport = ndlp->rport != NULL;
229                 rdata->pnode = NULL;
230                 ndlp->rport = NULL;
231                 if (put_node)
232                         lpfc_nlp_put(ndlp);
233                 if (put_rport)
234                         put_device(&rport->dev);
235                 return;
236         }
237
238         if (ndlp->nlp_sid != NLP_NO_SID) {
239                 warn_on = 1;
240                 /* flush the target */
241                 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
242                                     ndlp->nlp_sid, 0, LPFC_CTX_TGT);
243         }
244
245         if (warn_on) {
246                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
247                                  "0203 Devloss timeout on "
248                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
249                                  "NPort x%06x Data: x%x x%x x%x\n",
250                                  *name, *(name+1), *(name+2), *(name+3),
251                                  *(name+4), *(name+5), *(name+6), *(name+7),
252                                  ndlp->nlp_DID, ndlp->nlp_flag,
253                                  ndlp->nlp_state, ndlp->nlp_rpi);
254         } else {
255                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
256                                  "0204 Devloss timeout on "
257                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
258                                  "NPort x%06x Data: x%x x%x x%x\n",
259                                  *name, *(name+1), *(name+2), *(name+3),
260                                  *(name+4), *(name+5), *(name+6), *(name+7),
261                                  ndlp->nlp_DID, ndlp->nlp_flag,
262                                  ndlp->nlp_state, ndlp->nlp_rpi);
263         }
264
265         put_node = rdata->pnode != NULL;
266         put_rport = ndlp->rport != NULL;
267         rdata->pnode = NULL;
268         ndlp->rport = NULL;
269         if (put_node)
270                 lpfc_nlp_put(ndlp);
271         if (put_rport)
272                 put_device(&rport->dev);
273
274         if (!(vport->load_flag & FC_UNLOADING) &&
275             !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
276             !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
277             (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE))
278                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
279
280         lpfc_unregister_unused_fcf(phba);
281 }
282
283 /**
284  * lpfc_alloc_fast_evt - Allocates data structure for posting event
285  * @phba: Pointer to hba context object.
286  *
287  * This function is called from the functions which need to post
288  * events from interrupt context. This function allocates data
289  * structure required for posting event. It also keeps track of
290  * number of events pending and prevent event storm when there are
291  * too many events.
292  **/
293 struct lpfc_fast_path_event *
294 lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
295         struct lpfc_fast_path_event *ret;
296
297         /* If there are lot of fast event do not exhaust memory due to this */
298         if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
299                 return NULL;
300
301         ret = kzalloc(sizeof(struct lpfc_fast_path_event),
302                         GFP_ATOMIC);
303         if (ret) {
304                 atomic_inc(&phba->fast_event_count);
305                 INIT_LIST_HEAD(&ret->work_evt.evt_listp);
306                 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
307         }
308         return ret;
309 }
310
311 /**
312  * lpfc_free_fast_evt - Frees event data structure
313  * @phba: Pointer to hba context object.
314  * @evt:  Event object which need to be freed.
315  *
316  * This function frees the data structure required for posting
317  * events.
318  **/
319 void
320 lpfc_free_fast_evt(struct lpfc_hba *phba,
321                 struct lpfc_fast_path_event *evt) {
322
323         atomic_dec(&phba->fast_event_count);
324         kfree(evt);
325 }
326
327 /**
328  * lpfc_send_fastpath_evt - Posts events generated from fast path
329  * @phba: Pointer to hba context object.
330  * @evtp: Event data structure.
331  *
332  * This function is called from worker thread, when the interrupt
333  * context need to post an event. This function posts the event
334  * to fc transport netlink interface.
335  **/
336 static void
337 lpfc_send_fastpath_evt(struct lpfc_hba *phba,
338                 struct lpfc_work_evt *evtp)
339 {
340         unsigned long evt_category, evt_sub_category;
341         struct lpfc_fast_path_event *fast_evt_data;
342         char *evt_data;
343         uint32_t evt_data_size;
344         struct Scsi_Host *shost;
345
346         fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
347                 work_evt);
348
349         evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
350         evt_sub_category = (unsigned long) fast_evt_data->un.
351                         fabric_evt.subcategory;
352         shost = lpfc_shost_from_vport(fast_evt_data->vport);
353         if (evt_category == FC_REG_FABRIC_EVENT) {
354                 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
355                         evt_data = (char *) &fast_evt_data->un.read_check_error;
356                         evt_data_size = sizeof(fast_evt_data->un.
357                                 read_check_error);
358                 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
359                         (evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
360                         evt_data = (char *) &fast_evt_data->un.fabric_evt;
361                         evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
362                 } else {
363                         lpfc_free_fast_evt(phba, fast_evt_data);
364                         return;
365                 }
366         } else if (evt_category == FC_REG_SCSI_EVENT) {
367                 switch (evt_sub_category) {
368                 case LPFC_EVENT_QFULL:
369                 case LPFC_EVENT_DEVBSY:
370                         evt_data = (char *) &fast_evt_data->un.scsi_evt;
371                         evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
372                         break;
373                 case LPFC_EVENT_CHECK_COND:
374                         evt_data = (char *) &fast_evt_data->un.check_cond_evt;
375                         evt_data_size =  sizeof(fast_evt_data->un.
376                                 check_cond_evt);
377                         break;
378                 case LPFC_EVENT_VARQUEDEPTH:
379                         evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
380                         evt_data_size = sizeof(fast_evt_data->un.
381                                 queue_depth_evt);
382                         break;
383                 default:
384                         lpfc_free_fast_evt(phba, fast_evt_data);
385                         return;
386                 }
387         } else {
388                 lpfc_free_fast_evt(phba, fast_evt_data);
389                 return;
390         }
391
392         fc_host_post_vendor_event(shost,
393                 fc_get_event_number(),
394                 evt_data_size,
395                 evt_data,
396                 LPFC_NL_VENDOR_ID);
397
398         lpfc_free_fast_evt(phba, fast_evt_data);
399         return;
400 }
401
402 static void
403 lpfc_work_list_done(struct lpfc_hba *phba)
404 {
405         struct lpfc_work_evt  *evtp = NULL;
406         struct lpfc_nodelist  *ndlp;
407         int free_evt;
408
409         spin_lock_irq(&phba->hbalock);
410         while (!list_empty(&phba->work_list)) {
411                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
412                                  evt_listp);
413                 spin_unlock_irq(&phba->hbalock);
414                 free_evt = 1;
415                 switch (evtp->evt) {
416                 case LPFC_EVT_ELS_RETRY:
417                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
418                         lpfc_els_retry_delay_handler(ndlp);
419                         free_evt = 0; /* evt is part of ndlp */
420                         /* decrement the node reference count held
421                          * for this queued work
422                          */
423                         lpfc_nlp_put(ndlp);
424                         break;
425                 case LPFC_EVT_DEV_LOSS:
426                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
427                         lpfc_dev_loss_tmo_handler(ndlp);
428                         free_evt = 0;
429                         /* decrement the node reference count held for
430                          * this queued work
431                          */
432                         lpfc_nlp_put(ndlp);
433                         break;
434                 case LPFC_EVT_ONLINE:
435                         if (phba->link_state < LPFC_LINK_DOWN)
436                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
437                         else
438                                 *(int *) (evtp->evt_arg1) = 0;
439                         complete((struct completion *)(evtp->evt_arg2));
440                         break;
441                 case LPFC_EVT_OFFLINE_PREP:
442                         if (phba->link_state >= LPFC_LINK_DOWN)
443                                 lpfc_offline_prep(phba);
444                         *(int *)(evtp->evt_arg1) = 0;
445                         complete((struct completion *)(evtp->evt_arg2));
446                         break;
447                 case LPFC_EVT_OFFLINE:
448                         lpfc_offline(phba);
449                         lpfc_sli_brdrestart(phba);
450                         *(int *)(evtp->evt_arg1) =
451                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
452                         lpfc_unblock_mgmt_io(phba);
453                         complete((struct completion *)(evtp->evt_arg2));
454                         break;
455                 case LPFC_EVT_WARM_START:
456                         lpfc_offline(phba);
457                         lpfc_reset_barrier(phba);
458                         lpfc_sli_brdreset(phba);
459                         lpfc_hba_down_post(phba);
460                         *(int *)(evtp->evt_arg1) =
461                                 lpfc_sli_brdready(phba, HS_MBRDY);
462                         lpfc_unblock_mgmt_io(phba);
463                         complete((struct completion *)(evtp->evt_arg2));
464                         break;
465                 case LPFC_EVT_KILL:
466                         lpfc_offline(phba);
467                         *(int *)(evtp->evt_arg1)
468                                 = (phba->pport->stopped)
469                                         ? 0 : lpfc_sli_brdkill(phba);
470                         lpfc_unblock_mgmt_io(phba);
471                         complete((struct completion *)(evtp->evt_arg2));
472                         break;
473                 case LPFC_EVT_FASTPATH_MGMT_EVT:
474                         lpfc_send_fastpath_evt(phba, evtp);
475                         free_evt = 0;
476                         break;
477                 }
478                 if (free_evt)
479                         kfree(evtp);
480                 spin_lock_irq(&phba->hbalock);
481         }
482         spin_unlock_irq(&phba->hbalock);
483
484 }
485
486 static void
487 lpfc_work_done(struct lpfc_hba *phba)
488 {
489         struct lpfc_sli_ring *pring;
490         uint32_t ha_copy, status, control, work_port_events;
491         struct lpfc_vport **vports;
492         struct lpfc_vport *vport;
493         int i;
494
495         spin_lock_irq(&phba->hbalock);
496         ha_copy = phba->work_ha;
497         phba->work_ha = 0;
498         spin_unlock_irq(&phba->hbalock);
499
500         /* First, try to post the next mailbox command to SLI4 device */
501         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC)
502                 lpfc_sli4_post_async_mbox(phba);
503
504         if (ha_copy & HA_ERATT)
505                 /* Handle the error attention event */
506                 lpfc_handle_eratt(phba);
507
508         if (ha_copy & HA_MBATT)
509                 lpfc_sli_handle_mb_event(phba);
510
511         if (ha_copy & HA_LATT)
512                 lpfc_handle_latt(phba);
513
514         /* Process SLI4 events */
515         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
516                 if (phba->hba_flag & FCP_XRI_ABORT_EVENT)
517                         lpfc_sli4_fcp_xri_abort_event_proc(phba);
518                 if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
519                         lpfc_sli4_els_xri_abort_event_proc(phba);
520                 if (phba->hba_flag & ASYNC_EVENT)
521                         lpfc_sli4_async_event_proc(phba);
522                 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
523                         spin_lock_irq(&phba->hbalock);
524                         phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
525                         spin_unlock_irq(&phba->hbalock);
526                         lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
527                 }
528         }
529
530         vports = lpfc_create_vport_work_array(phba);
531         if (vports != NULL)
532                 for (i = 0; i <= phba->max_vports; i++) {
533                         /*
534                          * We could have no vports in array if unloading, so if
535                          * this happens then just use the pport
536                          */
537                         if (vports[i] == NULL && i == 0)
538                                 vport = phba->pport;
539                         else
540                                 vport = vports[i];
541                         if (vport == NULL)
542                                 break;
543                         spin_lock_irq(&vport->work_port_lock);
544                         work_port_events = vport->work_port_events;
545                         vport->work_port_events &= ~work_port_events;
546                         spin_unlock_irq(&vport->work_port_lock);
547                         if (work_port_events & WORKER_DISC_TMO)
548                                 lpfc_disc_timeout_handler(vport);
549                         if (work_port_events & WORKER_ELS_TMO)
550                                 lpfc_els_timeout_handler(vport);
551                         if (work_port_events & WORKER_HB_TMO)
552                                 lpfc_hb_timeout_handler(phba);
553                         if (work_port_events & WORKER_MBOX_TMO)
554                                 lpfc_mbox_timeout_handler(phba);
555                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
556                                 lpfc_unblock_fabric_iocbs(phba);
557                         if (work_port_events & WORKER_FDMI_TMO)
558                                 lpfc_fdmi_timeout_handler(vport);
559                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
560                                 lpfc_ramp_down_queue_handler(phba);
561                         if (work_port_events & WORKER_RAMP_UP_QUEUE)
562                                 lpfc_ramp_up_queue_handler(phba);
563                 }
564         lpfc_destroy_vport_work_array(phba, vports);
565
566         pring = &phba->sli.ring[LPFC_ELS_RING];
567         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
568         status >>= (4*LPFC_ELS_RING);
569         if ((status & HA_RXMASK) ||
570             (pring->flag & LPFC_DEFERRED_RING_EVENT) ||
571             (phba->hba_flag & HBA_SP_QUEUE_EVT)) {
572                 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
573                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
574                         /* Set the lpfc data pending flag */
575                         set_bit(LPFC_DATA_READY, &phba->data_flags);
576                 } else {
577                         pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
578                         lpfc_sli_handle_slow_ring_event(phba, pring,
579                                                         (status &
580                                                          HA_RXMASK));
581                 }
582                 /*
583                  * Turn on Ring interrupts
584                  */
585                 if (phba->sli_rev <= LPFC_SLI_REV3) {
586                         spin_lock_irq(&phba->hbalock);
587                         control = readl(phba->HCregaddr);
588                         if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
589                                 lpfc_debugfs_slow_ring_trc(phba,
590                                         "WRK Enable ring: cntl:x%x hacopy:x%x",
591                                         control, ha_copy, 0);
592
593                                 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
594                                 writel(control, phba->HCregaddr);
595                                 readl(phba->HCregaddr); /* flush */
596                         } else {
597                                 lpfc_debugfs_slow_ring_trc(phba,
598                                         "WRK Ring ok:     cntl:x%x hacopy:x%x",
599                                         control, ha_copy, 0);
600                         }
601                         spin_unlock_irq(&phba->hbalock);
602                 }
603         }
604         lpfc_work_list_done(phba);
605 }
606
607 int
608 lpfc_do_work(void *p)
609 {
610         struct lpfc_hba *phba = p;
611         int rc;
612
613         set_user_nice(current, -20);
614         phba->data_flags = 0;
615
616         while (!kthread_should_stop()) {
617                 /* wait and check worker queue activities */
618                 rc = wait_event_interruptible(phba->work_waitq,
619                                         (test_and_clear_bit(LPFC_DATA_READY,
620                                                             &phba->data_flags)
621                                          || kthread_should_stop()));
622                 /* Signal wakeup shall terminate the worker thread */
623                 if (rc) {
624                         lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
625                                         "0433 Wakeup on signal: rc=x%x\n", rc);
626                         break;
627                 }
628
629                 /* Attend pending lpfc data processing */
630                 lpfc_work_done(phba);
631         }
632         phba->worker_thread = NULL;
633         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
634                         "0432 Worker thread stopped.\n");
635         return 0;
636 }
637
638 /*
639  * This is only called to handle FC worker events. Since this a rare
640  * occurance, we allocate a struct lpfc_work_evt structure here instead of
641  * embedding it in the IOCB.
642  */
643 int
644 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
645                       uint32_t evt)
646 {
647         struct lpfc_work_evt  *evtp;
648         unsigned long flags;
649
650         /*
651          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
652          * be queued to worker thread for processing
653          */
654         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
655         if (!evtp)
656                 return 0;
657
658         evtp->evt_arg1  = arg1;
659         evtp->evt_arg2  = arg2;
660         evtp->evt       = evt;
661
662         spin_lock_irqsave(&phba->hbalock, flags);
663         list_add_tail(&evtp->evt_listp, &phba->work_list);
664         spin_unlock_irqrestore(&phba->hbalock, flags);
665
666         lpfc_worker_wake_up(phba);
667
668         return 1;
669 }
670
671 void
672 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
673 {
674         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
675         struct lpfc_hba  *phba = vport->phba;
676         struct lpfc_nodelist *ndlp, *next_ndlp;
677         int  rc;
678
679         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
680                 if (!NLP_CHK_NODE_ACT(ndlp))
681                         continue;
682                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
683                         continue;
684                 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
685                         ((vport->port_type == LPFC_NPIV_PORT) &&
686                         (ndlp->nlp_DID == NameServer_DID)))
687                         lpfc_unreg_rpi(vport, ndlp);
688
689                 /* Leave Fabric nodes alone on link down */
690                 if ((phba->sli_rev < LPFC_SLI_REV4) &&
691                     (!remove && ndlp->nlp_type & NLP_FABRIC))
692                         continue;
693                 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
694                                              remove
695                                              ? NLP_EVT_DEVICE_RM
696                                              : NLP_EVT_DEVICE_RECOVERY);
697         }
698         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
699                 lpfc_mbx_unreg_vpi(vport);
700                 spin_lock_irq(shost->host_lock);
701                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
702                 spin_unlock_irq(shost->host_lock);
703         }
704 }
705
706 void
707 lpfc_port_link_failure(struct lpfc_vport *vport)
708 {
709         /* Cleanup any outstanding received buffers */
710         lpfc_cleanup_rcv_buffers(vport);
711
712         /* Cleanup any outstanding RSCN activity */
713         lpfc_els_flush_rscn(vport);
714
715         /* Cleanup any outstanding ELS commands */
716         lpfc_els_flush_cmd(vport);
717
718         lpfc_cleanup_rpis(vport, 0);
719
720         /* Turn off discovery timer if its running */
721         lpfc_can_disctmo(vport);
722 }
723
724 void
725 lpfc_linkdown_port(struct lpfc_vport *vport)
726 {
727         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
728
729         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
730
731         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
732                 "Link Down:       state:x%x rtry:x%x flg:x%x",
733                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
734
735         lpfc_port_link_failure(vport);
736
737 }
738
739 int
740 lpfc_linkdown(struct lpfc_hba *phba)
741 {
742         struct lpfc_vport *vport = phba->pport;
743         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
744         struct lpfc_vport **vports;
745         LPFC_MBOXQ_t          *mb;
746         int i;
747
748         if (phba->link_state == LPFC_LINK_DOWN)
749                 return 0;
750         spin_lock_irq(&phba->hbalock);
751         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_DISCOVERED);
752         if (phba->link_state > LPFC_LINK_DOWN) {
753                 phba->link_state = LPFC_LINK_DOWN;
754                 phba->pport->fc_flag &= ~FC_LBIT;
755         }
756         spin_unlock_irq(&phba->hbalock);
757         vports = lpfc_create_vport_work_array(phba);
758         if (vports != NULL)
759                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
760                         /* Issue a LINK DOWN event to all nodes */
761                         lpfc_linkdown_port(vports[i]);
762                 }
763         lpfc_destroy_vport_work_array(phba, vports);
764         /* Clean up any firmware default rpi's */
765         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
766         if (mb) {
767                 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
768                 mb->vport = vport;
769                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
770                 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
771                     == MBX_NOT_FINISHED) {
772                         mempool_free(mb, phba->mbox_mem_pool);
773                 }
774         }
775
776         /* Setup myDID for link up if we are in pt2pt mode */
777         if (phba->pport->fc_flag & FC_PT2PT) {
778                 phba->pport->fc_myDID = 0;
779                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
780                 if (mb) {
781                         lpfc_config_link(phba, mb);
782                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
783                         mb->vport = vport;
784                         if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
785                             == MBX_NOT_FINISHED) {
786                                 mempool_free(mb, phba->mbox_mem_pool);
787                         }
788                 }
789                 spin_lock_irq(shost->host_lock);
790                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
791                 spin_unlock_irq(shost->host_lock);
792         }
793
794         return 0;
795 }
796
797 static void
798 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
799 {
800         struct lpfc_nodelist *ndlp;
801
802         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
803                 if (!NLP_CHK_NODE_ACT(ndlp))
804                         continue;
805                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
806                         continue;
807                 if (ndlp->nlp_type & NLP_FABRIC) {
808                         /* On Linkup its safe to clean up the ndlp
809                          * from Fabric connections.
810                          */
811                         if (ndlp->nlp_DID != Fabric_DID)
812                                 lpfc_unreg_rpi(vport, ndlp);
813                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
814                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
815                         /* Fail outstanding IO now since device is
816                          * marked for PLOGI.
817                          */
818                         lpfc_unreg_rpi(vport, ndlp);
819                 }
820         }
821 }
822
823 static void
824 lpfc_linkup_port(struct lpfc_vport *vport)
825 {
826         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
827         struct lpfc_hba  *phba = vport->phba;
828
829         if ((vport->load_flag & FC_UNLOADING) != 0)
830                 return;
831
832         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
833                 "Link Up:         top:x%x speed:x%x flg:x%x",
834                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
835
836         /* If NPIV is not enabled, only bring the physical port up */
837         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
838                 (vport != phba->pport))
839                 return;
840
841         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
842
843         spin_lock_irq(shost->host_lock);
844         vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
845                             FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
846         vport->fc_flag |= FC_NDISC_ACTIVE;
847         vport->fc_ns_retry = 0;
848         spin_unlock_irq(shost->host_lock);
849
850         if (vport->fc_flag & FC_LBIT)
851                 lpfc_linkup_cleanup_nodes(vport);
852
853 }
854
855 static int
856 lpfc_linkup(struct lpfc_hba *phba)
857 {
858         struct lpfc_vport **vports;
859         int i;
860
861         phba->link_state = LPFC_LINK_UP;
862
863         /* Unblock fabric iocbs if they are blocked */
864         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
865         del_timer_sync(&phba->fabric_block_timer);
866
867         vports = lpfc_create_vport_work_array(phba);
868         if (vports != NULL)
869                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
870                         lpfc_linkup_port(vports[i]);
871         lpfc_destroy_vport_work_array(phba, vports);
872         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
873             (phba->sli_rev < LPFC_SLI_REV4))
874                 lpfc_issue_clear_la(phba, phba->pport);
875
876         return 0;
877 }
878
879 /*
880  * This routine handles processing a CLEAR_LA mailbox
881  * command upon completion. It is setup in the LPFC_MBOXQ
882  * as the completion routine when the command is
883  * handed off to the SLI layer.
884  */
885 static void
886 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
887 {
888         struct lpfc_vport *vport = pmb->vport;
889         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
890         struct lpfc_sli   *psli = &phba->sli;
891         MAILBOX_t *mb = &pmb->u.mb;
892         uint32_t control;
893
894         /* Since we don't do discovery right now, turn these off here */
895         psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
896         psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
897         psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
898
899         /* Check for error */
900         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
901                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
902                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
903                                  "0320 CLEAR_LA mbxStatus error x%x hba "
904                                  "state x%x\n",
905                                  mb->mbxStatus, vport->port_state);
906                 phba->link_state = LPFC_HBA_ERROR;
907                 goto out;
908         }
909
910         if (vport->port_type == LPFC_PHYSICAL_PORT)
911                 phba->link_state = LPFC_HBA_READY;
912
913         spin_lock_irq(&phba->hbalock);
914         psli->sli_flag |= LPFC_PROCESS_LA;
915         control = readl(phba->HCregaddr);
916         control |= HC_LAINT_ENA;
917         writel(control, phba->HCregaddr);
918         readl(phba->HCregaddr); /* flush */
919         spin_unlock_irq(&phba->hbalock);
920         mempool_free(pmb, phba->mbox_mem_pool);
921         return;
922
923 out:
924         /* Device Discovery completes */
925         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
926                          "0225 Device Discovery completes\n");
927         mempool_free(pmb, phba->mbox_mem_pool);
928
929         spin_lock_irq(shost->host_lock);
930         vport->fc_flag &= ~FC_ABORT_DISCOVERY;
931         spin_unlock_irq(shost->host_lock);
932
933         lpfc_can_disctmo(vport);
934
935         /* turn on Link Attention interrupts */
936
937         spin_lock_irq(&phba->hbalock);
938         psli->sli_flag |= LPFC_PROCESS_LA;
939         control = readl(phba->HCregaddr);
940         control |= HC_LAINT_ENA;
941         writel(control, phba->HCregaddr);
942         readl(phba->HCregaddr); /* flush */
943         spin_unlock_irq(&phba->hbalock);
944
945         return;
946 }
947
948
949 static void
950 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
951 {
952         struct lpfc_vport *vport = pmb->vport;
953
954         if (pmb->u.mb.mbxStatus)
955                 goto out;
956
957         mempool_free(pmb, phba->mbox_mem_pool);
958
959         if (phba->fc_topology == TOPOLOGY_LOOP &&
960             vport->fc_flag & FC_PUBLIC_LOOP &&
961             !(vport->fc_flag & FC_LBIT)) {
962                         /* Need to wait for FAN - use discovery timer
963                          * for timeout.  port_state is identically
964                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
965                          */
966                         lpfc_set_disctmo(vport);
967                         return;
968         }
969
970         /* Start discovery by sending a FLOGI. port_state is identically
971          * LPFC_FLOGI while waiting for FLOGI cmpl
972          */
973         if (vport->port_state != LPFC_FLOGI) {
974                 lpfc_initial_flogi(vport);
975         }
976         return;
977
978 out:
979         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
980                          "0306 CONFIG_LINK mbxStatus error x%x "
981                          "HBA state x%x\n",
982                          pmb->u.mb.mbxStatus, vport->port_state);
983         mempool_free(pmb, phba->mbox_mem_pool);
984
985         lpfc_linkdown(phba);
986
987         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
988                          "0200 CONFIG_LINK bad hba state x%x\n",
989                          vport->port_state);
990
991         lpfc_issue_clear_la(phba, vport);
992         return;
993 }
994
995 static void
996 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
997 {
998         struct lpfc_vport *vport = mboxq->vport;
999         unsigned long flags;
1000
1001         if (mboxq->u.mb.mbxStatus) {
1002                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1003                          "2017 REG_FCFI mbxStatus error x%x "
1004                          "HBA state x%x\n",
1005                          mboxq->u.mb.mbxStatus, vport->port_state);
1006                 mempool_free(mboxq, phba->mbox_mem_pool);
1007                 return;
1008         }
1009
1010         /* Start FCoE discovery by sending a FLOGI. */
1011         phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1012         /* Set the FCFI registered flag */
1013         spin_lock_irqsave(&phba->hbalock, flags);
1014         phba->fcf.fcf_flag |= FCF_REGISTERED;
1015         spin_unlock_irqrestore(&phba->hbalock, flags);
1016         /* If there is a pending FCoE event, restart FCF table scan. */
1017         if (lpfc_check_pending_fcoe_event(phba, 1)) {
1018                 mempool_free(mboxq, phba->mbox_mem_pool);
1019                 return;
1020         }
1021         spin_lock_irqsave(&phba->hbalock, flags);
1022         phba->fcf.fcf_flag |= (FCF_DISCOVERED | FCF_IN_USE);
1023         phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1024         spin_unlock_irqrestore(&phba->hbalock, flags);
1025         if (vport->port_state != LPFC_FLOGI)
1026                 lpfc_initial_flogi(vport);
1027
1028         mempool_free(mboxq, phba->mbox_mem_pool);
1029         return;
1030 }
1031
1032 /**
1033  * lpfc_fab_name_match - Check if the fcf fabric name match.
1034  * @fab_name: pointer to fabric name.
1035  * @new_fcf_record: pointer to fcf record.
1036  *
1037  * This routine compare the fcf record's fabric name with provided
1038  * fabric name. If the fabric name are identical this function
1039  * returns 1 else return 0.
1040  **/
1041 static uint32_t
1042 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1043 {
1044         if ((fab_name[0] ==
1045                 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record)) &&
1046             (fab_name[1] ==
1047                 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record)) &&
1048             (fab_name[2] ==
1049                 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record)) &&
1050             (fab_name[3] ==
1051                 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record)) &&
1052             (fab_name[4] ==
1053                 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record)) &&
1054             (fab_name[5] ==
1055                 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record)) &&
1056             (fab_name[6] ==
1057                 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record)) &&
1058             (fab_name[7] ==
1059                 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record)))
1060                 return 1;
1061         else
1062                 return 0;
1063 }
1064
1065 /**
1066  * lpfc_sw_name_match - Check if the fcf switch name match.
1067  * @fab_name: pointer to fabric name.
1068  * @new_fcf_record: pointer to fcf record.
1069  *
1070  * This routine compare the fcf record's switch name with provided
1071  * switch name. If the switch name are identical this function
1072  * returns 1 else return 0.
1073  **/
1074 static uint32_t
1075 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1076 {
1077         if ((sw_name[0] ==
1078                 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record)) &&
1079             (sw_name[1] ==
1080                 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record)) &&
1081             (sw_name[2] ==
1082                 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record)) &&
1083             (sw_name[3] ==
1084                 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record)) &&
1085             (sw_name[4] ==
1086                 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record)) &&
1087             (sw_name[5] ==
1088                 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record)) &&
1089             (sw_name[6] ==
1090                 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record)) &&
1091             (sw_name[7] ==
1092                 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record)))
1093                 return 1;
1094         else
1095                 return 0;
1096 }
1097
1098 /**
1099  * lpfc_mac_addr_match - Check if the fcf mac address match.
1100  * @phba: pointer to lpfc hba data structure.
1101  * @new_fcf_record: pointer to fcf record.
1102  *
1103  * This routine compare the fcf record's mac address with HBA's
1104  * FCF mac address. If the mac addresses are identical this function
1105  * returns 1 else return 0.
1106  **/
1107 static uint32_t
1108 lpfc_mac_addr_match(struct lpfc_hba *phba, struct fcf_record *new_fcf_record)
1109 {
1110         if ((phba->fcf.mac_addr[0] ==
1111                 bf_get(lpfc_fcf_record_mac_0, new_fcf_record)) &&
1112             (phba->fcf.mac_addr[1] ==
1113                 bf_get(lpfc_fcf_record_mac_1, new_fcf_record)) &&
1114             (phba->fcf.mac_addr[2] ==
1115                 bf_get(lpfc_fcf_record_mac_2, new_fcf_record)) &&
1116             (phba->fcf.mac_addr[3] ==
1117                 bf_get(lpfc_fcf_record_mac_3, new_fcf_record)) &&
1118             (phba->fcf.mac_addr[4] ==
1119                 bf_get(lpfc_fcf_record_mac_4, new_fcf_record)) &&
1120             (phba->fcf.mac_addr[5] ==
1121                 bf_get(lpfc_fcf_record_mac_5, new_fcf_record)))
1122                 return 1;
1123         else
1124                 return 0;
1125 }
1126
1127 /**
1128  * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1129  * @phba: pointer to lpfc hba data structure.
1130  * @new_fcf_record: pointer to fcf record.
1131  *
1132  * This routine copies the FCF information from the FCF
1133  * record to lpfc_hba data structure.
1134  **/
1135 static void
1136 lpfc_copy_fcf_record(struct lpfc_hba *phba, struct fcf_record *new_fcf_record)
1137 {
1138         phba->fcf.fabric_name[0] =
1139                 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1140         phba->fcf.fabric_name[1] =
1141                 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1142         phba->fcf.fabric_name[2] =
1143                 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1144         phba->fcf.fabric_name[3] =
1145                 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1146         phba->fcf.fabric_name[4] =
1147                 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1148         phba->fcf.fabric_name[5] =
1149                 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1150         phba->fcf.fabric_name[6] =
1151                 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1152         phba->fcf.fabric_name[7] =
1153                 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1154         phba->fcf.mac_addr[0] =
1155                 bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1156         phba->fcf.mac_addr[1] =
1157                 bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1158         phba->fcf.mac_addr[2] =
1159                 bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1160         phba->fcf.mac_addr[3] =
1161                 bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1162         phba->fcf.mac_addr[4] =
1163                 bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1164         phba->fcf.mac_addr[5] =
1165                 bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1166         phba->fcf.fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1167         phba->fcf.priority = new_fcf_record->fip_priority;
1168         phba->fcf.switch_name[0] =
1169                 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1170         phba->fcf.switch_name[1] =
1171                 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1172         phba->fcf.switch_name[2] =
1173                 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1174         phba->fcf.switch_name[3] =
1175                 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1176         phba->fcf.switch_name[4] =
1177                 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1178         phba->fcf.switch_name[5] =
1179                 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1180         phba->fcf.switch_name[6] =
1181                 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1182         phba->fcf.switch_name[7] =
1183                 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1184 }
1185
1186 /**
1187  * lpfc_register_fcf - Register the FCF with hba.
1188  * @phba: pointer to lpfc hba data structure.
1189  *
1190  * This routine issues a register fcfi mailbox command to register
1191  * the fcf with HBA.
1192  **/
1193 static void
1194 lpfc_register_fcf(struct lpfc_hba *phba)
1195 {
1196         LPFC_MBOXQ_t *fcf_mbxq;
1197         int rc;
1198         unsigned long flags;
1199
1200         spin_lock_irqsave(&phba->hbalock, flags);
1201
1202         /* If the FCF is not availabe do nothing. */
1203         if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1204                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1205                 spin_unlock_irqrestore(&phba->hbalock, flags);
1206                 return;
1207         }
1208
1209         /* The FCF is already registered, start discovery */
1210         if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1211                 phba->fcf.fcf_flag |= (FCF_DISCOVERED | FCF_IN_USE);
1212                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1213                 spin_unlock_irqrestore(&phba->hbalock, flags);
1214                 if (phba->pport->port_state != LPFC_FLOGI)
1215                         lpfc_initial_flogi(phba->pport);
1216                 return;
1217         }
1218         spin_unlock_irqrestore(&phba->hbalock, flags);
1219
1220         fcf_mbxq = mempool_alloc(phba->mbox_mem_pool,
1221                 GFP_KERNEL);
1222         if (!fcf_mbxq) {
1223                 spin_lock_irqsave(&phba->hbalock, flags);
1224                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1225                 spin_unlock_irqrestore(&phba->hbalock, flags);
1226                 return;
1227         }
1228
1229         lpfc_reg_fcfi(phba, fcf_mbxq);
1230         fcf_mbxq->vport = phba->pport;
1231         fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1232         rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1233         if (rc == MBX_NOT_FINISHED) {
1234                 spin_lock_irqsave(&phba->hbalock, flags);
1235                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1236                 spin_unlock_irqrestore(&phba->hbalock, flags);
1237                 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1238         }
1239
1240         return;
1241 }
1242
1243 /**
1244  * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1245  * @phba: pointer to lpfc hba data structure.
1246  * @new_fcf_record: pointer to fcf record.
1247  * @boot_flag: Indicates if this record used by boot bios.
1248  * @addr_mode: The address mode to be used by this FCF
1249  *
1250  * This routine compare the fcf record with connect list obtained from the
1251  * config region to decide if this FCF can be used for SAN discovery. It returns
1252  * 1 if this record can be used for SAN discovery else return zero. If this FCF
1253  * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1254  * is used by boot bios and addr_mode will indicate the addressing mode to be
1255  * used for this FCF when the function returns.
1256  * If the FCF record need to be used with a particular vlan id, the vlan is
1257  * set in the vlan_id on return of the function. If not VLAN tagging need to
1258  * be used with the FCF vlan_id will be set to 0xFFFF;
1259  **/
1260 static int
1261 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1262                         struct fcf_record *new_fcf_record,
1263                         uint32_t *boot_flag, uint32_t *addr_mode,
1264                         uint16_t *vlan_id)
1265 {
1266         struct lpfc_fcf_conn_entry *conn_entry;
1267         int i, j, fcf_vlan_id = 0;
1268
1269         /* Find the lowest VLAN id in the FCF record */
1270         for (i = 0; i < 512; i++) {
1271                 if (new_fcf_record->vlan_bitmap[i]) {
1272                         fcf_vlan_id = i * 8;
1273                         j = 0;
1274                         while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
1275                                 j++;
1276                                 fcf_vlan_id++;
1277                         }
1278                         break;
1279                 }
1280         }
1281
1282         /* If FCF not available return 0 */
1283         if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1284                 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record))
1285                 return 0;
1286
1287         if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
1288                 *boot_flag = 0;
1289                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1290                                 new_fcf_record);
1291                 if (phba->valid_vlan)
1292                         *vlan_id = phba->vlan_id;
1293                 else
1294                         *vlan_id = 0xFFFF;
1295                 return 1;
1296         }
1297
1298         /*
1299          * If there are no FCF connection table entry, driver connect to all
1300          * FCFs.
1301          */
1302         if (list_empty(&phba->fcf_conn_rec_list)) {
1303                 *boot_flag = 0;
1304                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1305                         new_fcf_record);
1306
1307                 /*
1308                  * When there are no FCF connect entries, use driver's default
1309                  * addressing mode - FPMA.
1310                  */
1311                 if (*addr_mode & LPFC_FCF_FPMA)
1312                         *addr_mode = LPFC_FCF_FPMA;
1313
1314                 /* If FCF record report a vlan id use that vlan id */
1315                 if (fcf_vlan_id)
1316                         *vlan_id = fcf_vlan_id;
1317                 else
1318                         *vlan_id = 0xFFFF;
1319                 return 1;
1320         }
1321
1322         list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list, list) {
1323                 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
1324                         continue;
1325
1326                 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
1327                         !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
1328                                              new_fcf_record))
1329                         continue;
1330                 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
1331                         !lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
1332                                             new_fcf_record))
1333                         continue;
1334                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
1335                         /*
1336                          * If the vlan bit map does not have the bit set for the
1337                          * vlan id to be used, then it is not a match.
1338                          */
1339                         if (!(new_fcf_record->vlan_bitmap
1340                                 [conn_entry->conn_rec.vlan_tag / 8] &
1341                                 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
1342                                 continue;
1343                 }
1344
1345                 /*
1346                  * If connection record does not support any addressing mode,
1347                  * skip the FCF record.
1348                  */
1349                 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
1350                         & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
1351                         continue;
1352
1353                 /*
1354                  * Check if the connection record specifies a required
1355                  * addressing mode.
1356                  */
1357                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1358                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
1359
1360                         /*
1361                          * If SPMA required but FCF not support this continue.
1362                          */
1363                         if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1364                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1365                                         new_fcf_record) & LPFC_FCF_SPMA))
1366                                 continue;
1367
1368                         /*
1369                          * If FPMA required but FCF not support this continue.
1370                          */
1371                         if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1372                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1373                                 new_fcf_record) & LPFC_FCF_FPMA))
1374                                 continue;
1375                 }
1376
1377                 /*
1378                  * This fcf record matches filtering criteria.
1379                  */
1380                 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
1381                         *boot_flag = 1;
1382                 else
1383                         *boot_flag = 0;
1384
1385                 /*
1386                  * If user did not specify any addressing mode, or if the
1387                  * prefered addressing mode specified by user is not supported
1388                  * by FCF, allow fabric to pick the addressing mode.
1389                  */
1390                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1391                                 new_fcf_record);
1392                 /*
1393                  * If the user specified a required address mode, assign that
1394                  * address mode
1395                  */
1396                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1397                         (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
1398                         *addr_mode = (conn_entry->conn_rec.flags &
1399                                 FCFCNCT_AM_SPMA) ?
1400                                 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
1401                 /*
1402                  * If the user specified a prefered address mode, use the
1403                  * addr mode only if FCF support the addr_mode.
1404                  */
1405                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1406                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1407                         (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1408                         (*addr_mode & LPFC_FCF_SPMA))
1409                                 *addr_mode = LPFC_FCF_SPMA;
1410                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1411                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1412                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1413                         (*addr_mode & LPFC_FCF_FPMA))
1414                                 *addr_mode = LPFC_FCF_FPMA;
1415
1416                 /* If matching connect list has a vlan id, use it */
1417                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
1418                         *vlan_id = conn_entry->conn_rec.vlan_tag;
1419                 /*
1420                  * If no vlan id is specified in connect list, use the vlan id
1421                  * in the FCF record
1422                  */
1423                 else if (fcf_vlan_id)
1424                         *vlan_id = fcf_vlan_id;
1425                 else
1426                         *vlan_id = 0xFFFF;
1427
1428                 return 1;
1429         }
1430
1431         return 0;
1432 }
1433
1434 /**
1435  * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
1436  * @phba: pointer to lpfc hba data structure.
1437  * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
1438  *
1439  * This function check if there is any fcoe event pending while driver
1440  * scan FCF entries. If there is any pending event, it will restart the
1441  * FCF saning and return 1 else return 0.
1442  */
1443 int
1444 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
1445 {
1446         LPFC_MBOXQ_t *mbox;
1447         int rc;
1448         /*
1449          * If the Link is up and no FCoE events while in the
1450          * FCF discovery, no need to restart FCF discovery.
1451          */
1452         if ((phba->link_state  >= LPFC_LINK_UP) &&
1453                 (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
1454                 return 0;
1455
1456         spin_lock_irq(&phba->hbalock);
1457         phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
1458         spin_unlock_irq(&phba->hbalock);
1459
1460         if (phba->link_state >= LPFC_LINK_UP)
1461                 lpfc_sli4_read_fcf_record(phba, LPFC_FCOE_FCF_GET_FIRST);
1462         else {
1463                 /*
1464                  * Do not continue FCF discovery and clear FCF_DISC_INPROGRESS
1465                  * flag
1466                  */
1467                 spin_lock_irq(&phba->hbalock);
1468                 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1469                 spin_unlock_irq(&phba->hbalock);
1470         }
1471
1472         if (unreg_fcf) {
1473                 spin_lock_irq(&phba->hbalock);
1474                 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
1475                 spin_unlock_irq(&phba->hbalock);
1476                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1477                 if (!mbox) {
1478                         lpfc_printf_log(phba, KERN_ERR,
1479                                 LOG_DISCOVERY|LOG_MBOX,
1480                                 "2610 UNREG_FCFI mbox allocation failed\n");
1481                         return 1;
1482                 }
1483                 lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
1484                 mbox->vport = phba->pport;
1485                 mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
1486                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1487                 if (rc == MBX_NOT_FINISHED) {
1488                         lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
1489                                 "2611 UNREG_FCFI issue mbox failed\n");
1490                         mempool_free(mbox, phba->mbox_mem_pool);
1491                 }
1492         }
1493
1494         return 1;
1495 }
1496
1497 /**
1498  * lpfc_mbx_cmpl_read_fcf_record - Completion handler for read_fcf mbox.
1499  * @phba: pointer to lpfc hba data structure.
1500  * @mboxq: pointer to mailbox object.
1501  *
1502  * This function iterate through all the fcf records available in
1503  * HBA and choose the optimal FCF record for discovery. After finding
1504  * the FCF for discovery it register the FCF record and kick start
1505  * discovery.
1506  * If FCF_IN_USE flag is set in currently used FCF, the routine try to
1507  * use a FCF record which match fabric name and mac address of the
1508  * currently used FCF record.
1509  * If the driver support only one FCF, it will try to use the FCF record
1510  * used by BOOT_BIOS.
1511  */
1512 void
1513 lpfc_mbx_cmpl_read_fcf_record(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1514 {
1515         void *virt_addr;
1516         dma_addr_t phys_addr;
1517         uint8_t *bytep;
1518         struct lpfc_mbx_sge sge;
1519         struct lpfc_mbx_read_fcf_tbl *read_fcf;
1520         uint32_t shdr_status, shdr_add_status;
1521         union lpfc_sli4_cfg_shdr *shdr;
1522         struct fcf_record *new_fcf_record;
1523         int rc;
1524         uint32_t boot_flag, addr_mode;
1525         uint32_t next_fcf_index;
1526         unsigned long flags;
1527         uint16_t vlan_id;
1528
1529         /* If there is pending FCoE event restart FCF table scan */
1530         if (lpfc_check_pending_fcoe_event(phba, 0)) {
1531                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
1532                 return;
1533         }
1534
1535         /* Get the first SGE entry from the non-embedded DMA memory. This
1536          * routine only uses a single SGE.
1537          */
1538         lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
1539         phys_addr = getPaddr(sge.pa_hi, sge.pa_lo);
1540         if (unlikely(!mboxq->sge_array)) {
1541                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1542                                 "2524 Failed to get the non-embedded SGE "
1543                                 "virtual address\n");
1544                 goto out;
1545         }
1546         virt_addr = mboxq->sge_array->addr[0];
1547
1548         shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
1549         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
1550         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
1551                                  &shdr->response);
1552         /*
1553          * The FCF Record was read and there is no reason for the driver
1554          * to maintain the FCF record data or memory. Instead, just need
1555          * to book keeping the FCFIs can be used.
1556          */
1557         if (shdr_status || shdr_add_status) {
1558                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1559                                 "2521 READ_FCF_RECORD mailbox failed "
1560                                 "with status x%x add_status x%x, mbx\n",
1561                                 shdr_status, shdr_add_status);
1562                 goto out;
1563         }
1564         /* Interpreting the returned information of FCF records */
1565         read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
1566         lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
1567                               sizeof(struct lpfc_mbx_read_fcf_tbl));
1568         next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
1569
1570         new_fcf_record = (struct fcf_record *)(virt_addr +
1571                           sizeof(struct lpfc_mbx_read_fcf_tbl));
1572         lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
1573                               sizeof(struct fcf_record));
1574         bytep = virt_addr + sizeof(union lpfc_sli4_cfg_shdr);
1575
1576         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record,
1577                                       &boot_flag, &addr_mode,
1578                                         &vlan_id);
1579         /*
1580          * If the fcf record does not match with connect list entries
1581          * read the next entry.
1582          */
1583         if (!rc)
1584                 goto read_next_fcf;
1585         /*
1586          * If this is not the first FCF discovery of the HBA, use last
1587          * FCF record for the discovery.
1588          */
1589         spin_lock_irqsave(&phba->hbalock, flags);
1590         if (phba->fcf.fcf_flag & FCF_IN_USE) {
1591                 if (lpfc_fab_name_match(phba->fcf.fabric_name,
1592                                         new_fcf_record) &&
1593                     lpfc_sw_name_match(phba->fcf.switch_name,
1594                                         new_fcf_record) &&
1595                     lpfc_mac_addr_match(phba, new_fcf_record)) {
1596                         phba->fcf.fcf_flag |= FCF_AVAILABLE;
1597                         spin_unlock_irqrestore(&phba->hbalock, flags);
1598                         goto out;
1599                 }
1600                 spin_unlock_irqrestore(&phba->hbalock, flags);
1601                 goto read_next_fcf;
1602         }
1603         if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
1604                 /*
1605                  * If the current FCF record does not have boot flag
1606                  * set and new fcf record has boot flag set, use the
1607                  * new fcf record.
1608                  */
1609                 if (boot_flag && !(phba->fcf.fcf_flag & FCF_BOOT_ENABLE)) {
1610                         /* Use this FCF record */
1611                         lpfc_copy_fcf_record(phba, new_fcf_record);
1612                         phba->fcf.addr_mode = addr_mode;
1613                         phba->fcf.fcf_flag |= FCF_BOOT_ENABLE;
1614                         if (vlan_id != 0xFFFF) {
1615                                 phba->fcf.fcf_flag |= FCF_VALID_VLAN;
1616                                 phba->fcf.vlan_id = vlan_id;
1617                         }
1618                         spin_unlock_irqrestore(&phba->hbalock, flags);
1619                         goto read_next_fcf;
1620                 }
1621                 /*
1622                  * If the current FCF record has boot flag set and the
1623                  * new FCF record does not have boot flag, read the next
1624                  * FCF record.
1625                  */
1626                 if (!boot_flag && (phba->fcf.fcf_flag & FCF_BOOT_ENABLE)) {
1627                         spin_unlock_irqrestore(&phba->hbalock, flags);
1628                         goto read_next_fcf;
1629                 }
1630                 /*
1631                  * If there is a record with lower priority value for
1632                  * the current FCF, use that record.
1633                  */
1634                 if (lpfc_fab_name_match(phba->fcf.fabric_name,
1635                                         new_fcf_record) &&
1636                     (new_fcf_record->fip_priority < phba->fcf.priority)) {
1637                         /* Use this FCF record */
1638                         lpfc_copy_fcf_record(phba, new_fcf_record);
1639                         phba->fcf.addr_mode = addr_mode;
1640                         if (vlan_id != 0xFFFF) {
1641                                 phba->fcf.fcf_flag |= FCF_VALID_VLAN;
1642                                 phba->fcf.vlan_id = vlan_id;
1643                         }
1644                         spin_unlock_irqrestore(&phba->hbalock, flags);
1645                         goto read_next_fcf;
1646                 }
1647                 spin_unlock_irqrestore(&phba->hbalock, flags);
1648                 goto read_next_fcf;
1649         }
1650         /*
1651          * This is the first available FCF record, use this
1652          * record.
1653          */
1654         lpfc_copy_fcf_record(phba, new_fcf_record);
1655         phba->fcf.addr_mode = addr_mode;
1656         if (boot_flag)
1657                 phba->fcf.fcf_flag |= FCF_BOOT_ENABLE;
1658         phba->fcf.fcf_flag |= FCF_AVAILABLE;
1659         if (vlan_id != 0xFFFF) {
1660                 phba->fcf.fcf_flag |= FCF_VALID_VLAN;
1661                 phba->fcf.vlan_id = vlan_id;
1662         }
1663         spin_unlock_irqrestore(&phba->hbalock, flags);
1664         goto read_next_fcf;
1665
1666 read_next_fcf:
1667         lpfc_sli4_mbox_cmd_free(phba, mboxq);
1668         if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0)
1669                 lpfc_register_fcf(phba);
1670         else
1671                 lpfc_sli4_read_fcf_record(phba, next_fcf_index);
1672         return;
1673
1674 out:
1675         lpfc_sli4_mbox_cmd_free(phba, mboxq);
1676         lpfc_register_fcf(phba);
1677
1678         return;
1679 }
1680
1681 /**
1682  * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
1683  * @phba: pointer to lpfc hba data structure.
1684  * @mboxq: pointer to mailbox data structure.
1685  *
1686  * This function handles completion of init vpi mailbox command.
1687  */
1688 static void
1689 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1690 {
1691         struct lpfc_vport *vport = mboxq->vport;
1692         if (mboxq->u.mb.mbxStatus) {
1693                 lpfc_printf_vlog(vport, KERN_ERR,
1694                                 LOG_MBOX,
1695                                 "2609 Init VPI mailbox failed 0x%x\n",
1696                                 mboxq->u.mb.mbxStatus);
1697                 mempool_free(mboxq, phba->mbox_mem_pool);
1698                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1699                 return;
1700         }
1701         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
1702
1703         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1704                 lpfc_initial_fdisc(vport);
1705         else {
1706                 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
1707                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1708                                  "2606 No NPIV Fabric support\n");
1709         }
1710         return;
1711 }
1712
1713 /**
1714  * lpfc_start_fdiscs - send fdiscs for each vports on this port.
1715  * @phba: pointer to lpfc hba data structure.
1716  *
1717  * This function loops through the list of vports on the @phba and issues an
1718  * FDISC if possible.
1719  */
1720 void
1721 lpfc_start_fdiscs(struct lpfc_hba *phba)
1722 {
1723         struct lpfc_vport **vports;
1724         int i;
1725         LPFC_MBOXQ_t *mboxq;
1726         int rc;
1727
1728         vports = lpfc_create_vport_work_array(phba);
1729         if (vports != NULL) {
1730                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
1731                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
1732                                 continue;
1733                         /* There are no vpi for this vport */
1734                         if (vports[i]->vpi > phba->max_vpi) {
1735                                 lpfc_vport_set_state(vports[i],
1736                                                      FC_VPORT_FAILED);
1737                                 continue;
1738                         }
1739                         if (phba->fc_topology == TOPOLOGY_LOOP) {
1740                                 lpfc_vport_set_state(vports[i],
1741                                                      FC_VPORT_LINKDOWN);
1742                                 continue;
1743                         }
1744                         if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
1745                                 mboxq = mempool_alloc(phba->mbox_mem_pool,
1746                                         GFP_KERNEL);
1747                                 if (!mboxq) {
1748                                         lpfc_printf_vlog(vports[i], KERN_ERR,
1749                                         LOG_MBOX, "2607 Failed to allocate "
1750                                         "init_vpi mailbox\n");
1751                                         continue;
1752                                 }
1753                                 lpfc_init_vpi(phba, mboxq, vports[i]->vpi);
1754                                 mboxq->vport = vports[i];
1755                                 mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
1756                                 rc = lpfc_sli_issue_mbox(phba, mboxq,
1757                                         MBX_NOWAIT);
1758                                 if (rc == MBX_NOT_FINISHED) {
1759                                         lpfc_printf_vlog(vports[i], KERN_ERR,
1760                                         LOG_MBOX, "2608 Failed to issue "
1761                                         "init_vpi mailbox\n");
1762                                         mempool_free(mboxq,
1763                                                 phba->mbox_mem_pool);
1764                                 }
1765                                 continue;
1766                         }
1767                         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1768                                 lpfc_initial_fdisc(vports[i]);
1769                         else {
1770                                 lpfc_vport_set_state(vports[i],
1771                                                      FC_VPORT_NO_FABRIC_SUPP);
1772                                 lpfc_printf_vlog(vports[i], KERN_ERR,
1773                                                  LOG_ELS,
1774                                                  "0259 No NPIV "
1775                                                  "Fabric support\n");
1776                         }
1777                 }
1778         }
1779         lpfc_destroy_vport_work_array(phba, vports);
1780 }
1781
1782 void
1783 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1784 {
1785         struct lpfc_dmabuf *dmabuf = mboxq->context1;
1786         struct lpfc_vport *vport = mboxq->vport;
1787
1788         if (mboxq->u.mb.mbxStatus) {
1789                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1790                          "2018 REG_VFI mbxStatus error x%x "
1791                          "HBA state x%x\n",
1792                          mboxq->u.mb.mbxStatus, vport->port_state);
1793                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1794                         /* FLOGI failed, use loop map to make discovery list */
1795                         lpfc_disc_list_loopmap(vport);
1796                         /* Start discovery */
1797                         lpfc_disc_start(vport);
1798                         goto fail_free_mem;
1799                 }
1800                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1801                 goto fail_free_mem;
1802         }
1803         /* The VPI is implicitly registered when the VFI is registered */
1804         vport->vpi_state |= LPFC_VPI_REGISTERED;
1805
1806         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
1807                 lpfc_start_fdiscs(phba);
1808                 lpfc_do_scr_ns_plogi(phba, vport);
1809         }
1810
1811 fail_free_mem:
1812         mempool_free(mboxq, phba->mbox_mem_pool);
1813         lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
1814         kfree(dmabuf);
1815         return;
1816 }
1817
1818 static void
1819 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1820 {
1821         MAILBOX_t *mb = &pmb->u.mb;
1822         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
1823         struct lpfc_vport  *vport = pmb->vport;
1824
1825
1826         /* Check for error */
1827         if (mb->mbxStatus) {
1828                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
1829                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1830                                  "0319 READ_SPARAM mbxStatus error x%x "
1831                                  "hba state x%x>\n",
1832                                  mb->mbxStatus, vport->port_state);
1833                 lpfc_linkdown(phba);
1834                 goto out;
1835         }
1836
1837         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
1838                sizeof (struct serv_parm));
1839         if (phba->cfg_soft_wwnn)
1840                 u64_to_wwn(phba->cfg_soft_wwnn,
1841                            vport->fc_sparam.nodeName.u.wwn);
1842         if (phba->cfg_soft_wwpn)
1843                 u64_to_wwn(phba->cfg_soft_wwpn,
1844                            vport->fc_sparam.portName.u.wwn);
1845         memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
1846                sizeof(vport->fc_nodename));
1847         memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
1848                sizeof(vport->fc_portname));
1849         if (vport->port_type == LPFC_PHYSICAL_PORT) {
1850                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
1851                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
1852         }
1853
1854         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1855         kfree(mp);
1856         mempool_free(pmb, phba->mbox_mem_pool);
1857         return;
1858
1859 out:
1860         pmb->context1 = NULL;
1861         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1862         kfree(mp);
1863         lpfc_issue_clear_la(phba, vport);
1864         mempool_free(pmb, phba->mbox_mem_pool);
1865         return;
1866 }
1867
1868 static void
1869 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
1870 {
1871         struct lpfc_vport *vport = phba->pport;
1872         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
1873         int i;
1874         struct lpfc_dmabuf *mp;
1875         int rc;
1876         struct fcf_record *fcf_record;
1877
1878         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1879
1880         spin_lock_irq(&phba->hbalock);
1881         switch (la->UlnkSpeed) {
1882         case LA_1GHZ_LINK:
1883                 phba->fc_linkspeed = LA_1GHZ_LINK;
1884                 break;
1885         case LA_2GHZ_LINK:
1886                 phba->fc_linkspeed = LA_2GHZ_LINK;
1887                 break;
1888         case LA_4GHZ_LINK:
1889                 phba->fc_linkspeed = LA_4GHZ_LINK;
1890                 break;
1891         case LA_8GHZ_LINK:
1892                 phba->fc_linkspeed = LA_8GHZ_LINK;
1893                 break;
1894         case LA_10GHZ_LINK:
1895                 phba->fc_linkspeed = LA_10GHZ_LINK;
1896                 break;
1897         default:
1898                 phba->fc_linkspeed = LA_UNKNW_LINK;
1899                 break;
1900         }
1901
1902         phba->fc_topology = la->topology;
1903         phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
1904
1905         if (phba->fc_topology == TOPOLOGY_LOOP) {
1906                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
1907
1908                 /* if npiv is enabled and this adapter supports npiv log
1909                  * a message that npiv is not supported in this topology
1910                  */
1911                 if (phba->cfg_enable_npiv && phba->max_vpi)
1912                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1913                                 "1309 Link Up Event npiv not supported in loop "
1914                                 "topology\n");
1915                                 /* Get Loop Map information */
1916                 if (la->il)
1917                         vport->fc_flag |= FC_LBIT;
1918
1919                 vport->fc_myDID = la->granted_AL_PA;
1920                 i = la->un.lilpBde64.tus.f.bdeSize;
1921
1922                 if (i == 0) {
1923                         phba->alpa_map[0] = 0;
1924                 } else {
1925                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
1926                                 int numalpa, j, k;
1927                                 union {
1928                                         uint8_t pamap[16];
1929                                         struct {
1930                                                 uint32_t wd1;
1931                                                 uint32_t wd2;
1932                                                 uint32_t wd3;
1933                                                 uint32_t wd4;
1934                                         } pa;
1935                                 } un;
1936                                 numalpa = phba->alpa_map[0];
1937                                 j = 0;
1938                                 while (j < numalpa) {
1939                                         memset(un.pamap, 0, 16);
1940                                         for (k = 1; j < numalpa; k++) {
1941                                                 un.pamap[k - 1] =
1942                                                         phba->alpa_map[j + 1];
1943                                                 j++;
1944                                                 if (k == 16)
1945                                                         break;
1946                                         }
1947                                         /* Link Up Event ALPA map */
1948                                         lpfc_printf_log(phba,
1949                                                         KERN_WARNING,
1950                                                         LOG_LINK_EVENT,
1951                                                         "1304 Link Up Event "
1952                                                         "ALPA map Data: x%x "
1953                                                         "x%x x%x x%x\n",
1954                                                         un.pa.wd1, un.pa.wd2,
1955                                                         un.pa.wd3, un.pa.wd4);
1956                                 }
1957                         }
1958                 }
1959         } else {
1960                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
1961                         if (phba->max_vpi && phba->cfg_enable_npiv &&
1962                            (phba->sli_rev == 3))
1963                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
1964                 }
1965                 vport->fc_myDID = phba->fc_pref_DID;
1966                 vport->fc_flag |= FC_LBIT;
1967         }
1968         spin_unlock_irq(&phba->hbalock);
1969
1970         lpfc_linkup(phba);
1971         if (sparam_mbox) {
1972                 lpfc_read_sparam(phba, sparam_mbox, 0);
1973                 sparam_mbox->vport = vport;
1974                 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1975                 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
1976                 if (rc == MBX_NOT_FINISHED) {
1977                         mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
1978                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1979                         kfree(mp);
1980                         mempool_free(sparam_mbox, phba->mbox_mem_pool);
1981                         goto out;
1982                 }
1983         }
1984
1985         if (!(phba->hba_flag & HBA_FCOE_SUPPORT)) {
1986                 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1987                 if (!cfglink_mbox)
1988                         goto out;
1989                 vport->port_state = LPFC_LOCAL_CFG_LINK;
1990                 lpfc_config_link(phba, cfglink_mbox);
1991                 cfglink_mbox->vport = vport;
1992                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
1993                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
1994                 if (rc == MBX_NOT_FINISHED) {
1995                         mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1996                         goto out;
1997                 }
1998         } else {
1999                 vport->port_state = LPFC_VPORT_UNKNOWN;
2000                 /*
2001                  * Add the driver's default FCF record at FCF index 0 now. This
2002                  * is phase 1 implementation that support FCF index 0 and driver
2003                  * defaults.
2004                  */
2005                 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
2006                         fcf_record = kzalloc(sizeof(struct fcf_record),
2007                                         GFP_KERNEL);
2008                         if (unlikely(!fcf_record)) {
2009                                 lpfc_printf_log(phba, KERN_ERR,
2010                                         LOG_MBOX | LOG_SLI,
2011                                         "2554 Could not allocate memmory for "
2012                                         "fcf record\n");
2013                                 rc = -ENODEV;
2014                                 goto out;
2015                         }
2016
2017                         lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
2018                                                 LPFC_FCOE_FCF_DEF_INDEX);
2019                         rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
2020                         if (unlikely(rc)) {
2021                                 lpfc_printf_log(phba, KERN_ERR,
2022                                         LOG_MBOX | LOG_SLI,
2023                                         "2013 Could not manually add FCF "
2024                                         "record 0, status %d\n", rc);
2025                                 rc = -ENODEV;
2026                                 kfree(fcf_record);
2027                                 goto out;
2028                         }
2029                         kfree(fcf_record);
2030                 }
2031                 /*
2032                  * The driver is expected to do FIP/FCF. Call the port
2033                  * and get the FCF Table.
2034                  */
2035                 spin_lock_irq(&phba->hbalock);
2036                 if (phba->hba_flag & FCF_DISC_INPROGRESS) {
2037                         spin_unlock_irq(&phba->hbalock);
2038                         return;
2039                 }
2040                 spin_unlock_irq(&phba->hbalock);
2041                 rc = lpfc_sli4_read_fcf_record(phba,
2042                                         LPFC_FCOE_FCF_GET_FIRST);
2043                 if (rc)
2044                         goto out;
2045         }
2046
2047         return;
2048 out:
2049         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2050         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2051                          "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
2052                          vport->port_state, sparam_mbox, cfglink_mbox);
2053         lpfc_issue_clear_la(phba, vport);
2054         return;
2055 }
2056
2057 static void
2058 lpfc_enable_la(struct lpfc_hba *phba)
2059 {
2060         uint32_t control;
2061         struct lpfc_sli *psli = &phba->sli;
2062         spin_lock_irq(&phba->hbalock);
2063         psli->sli_flag |= LPFC_PROCESS_LA;
2064         if (phba->sli_rev <= LPFC_SLI_REV3) {
2065                 control = readl(phba->HCregaddr);
2066                 control |= HC_LAINT_ENA;
2067                 writel(control, phba->HCregaddr);
2068                 readl(phba->HCregaddr); /* flush */
2069         }
2070         spin_unlock_irq(&phba->hbalock);
2071 }
2072
2073 static void
2074 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
2075 {
2076         lpfc_linkdown(phba);
2077         lpfc_enable_la(phba);
2078         lpfc_unregister_unused_fcf(phba);
2079         /* turn on Link Attention interrupts - no CLEAR_LA needed */
2080 }
2081
2082
2083 /*
2084  * This routine handles processing a READ_LA mailbox
2085  * command upon completion. It is setup in the LPFC_MBOXQ
2086  * as the completion routine when the command is
2087  * handed off to the SLI layer.
2088  */
2089 void
2090 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2091 {
2092         struct lpfc_vport *vport = pmb->vport;
2093         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2094         READ_LA_VAR *la;
2095         MAILBOX_t *mb = &pmb->u.mb;
2096         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2097
2098         /* Unblock ELS traffic */
2099         phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
2100         /* Check for error */
2101         if (mb->mbxStatus) {
2102                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
2103                                 "1307 READ_LA mbox error x%x state x%x\n",
2104                                 mb->mbxStatus, vport->port_state);
2105                 lpfc_mbx_issue_link_down(phba);
2106                 phba->link_state = LPFC_HBA_ERROR;
2107                 goto lpfc_mbx_cmpl_read_la_free_mbuf;
2108         }
2109
2110         la = (READ_LA_VAR *) &pmb->u.mb.un.varReadLA;
2111
2112         memcpy(&phba->alpa_map[0], mp->virt, 128);
2113
2114         spin_lock_irq(shost->host_lock);
2115         if (la->pb)
2116                 vport->fc_flag |= FC_BYPASSED_MODE;
2117         else
2118                 vport->fc_flag &= ~FC_BYPASSED_MODE;
2119         spin_unlock_irq(shost->host_lock);
2120
2121         if ((phba->fc_eventTag  < la->eventTag) ||
2122             (phba->fc_eventTag == la->eventTag)) {
2123                 phba->fc_stat.LinkMultiEvent++;
2124                 if (la->attType == AT_LINK_UP)
2125                         if (phba->fc_eventTag != 0)
2126                                 lpfc_linkdown(phba);
2127         }
2128
2129         phba->fc_eventTag = la->eventTag;
2130         if (la->mm)
2131                 phba->sli.sli_flag |= LPFC_MENLO_MAINT;
2132         else
2133                 phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
2134
2135         phba->link_events++;
2136         if (la->attType == AT_LINK_UP && (!la->mm)) {
2137                 phba->fc_stat.LinkUp++;
2138                 if (phba->link_flag & LS_LOOPBACK_MODE) {
2139                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2140                                         "1306 Link Up Event in loop back mode "
2141                                         "x%x received Data: x%x x%x x%x x%x\n",
2142                                         la->eventTag, phba->fc_eventTag,
2143                                         la->granted_AL_PA, la->UlnkSpeed,
2144                                         phba->alpa_map[0]);
2145                 } else {
2146                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2147                                         "1303 Link Up Event x%x received "
2148                                         "Data: x%x x%x x%x x%x x%x x%x %d\n",
2149                                         la->eventTag, phba->fc_eventTag,
2150                                         la->granted_AL_PA, la->UlnkSpeed,
2151                                         phba->alpa_map[0],
2152                                         la->mm, la->fa,
2153                                         phba->wait_4_mlo_maint_flg);
2154                 }
2155                 lpfc_mbx_process_link_up(phba, la);
2156         } else if (la->attType == AT_LINK_DOWN) {
2157                 phba->fc_stat.LinkDown++;
2158                 if (phba->link_flag & LS_LOOPBACK_MODE) {
2159                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2160                                 "1308 Link Down Event in loop back mode "
2161                                 "x%x received "
2162                                 "Data: x%x x%x x%x\n",
2163                                 la->eventTag, phba->fc_eventTag,
2164                                 phba->pport->port_state, vport->fc_flag);
2165                 }
2166                 else {
2167                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2168                                 "1305 Link Down Event x%x received "
2169                                 "Data: x%x x%x x%x x%x x%x\n",
2170                                 la->eventTag, phba->fc_eventTag,
2171                                 phba->pport->port_state, vport->fc_flag,
2172                                 la->mm, la->fa);
2173                 }
2174                 lpfc_mbx_issue_link_down(phba);
2175         }
2176         if (la->mm && la->attType == AT_LINK_UP) {
2177                 if (phba->link_state != LPFC_LINK_DOWN) {
2178                         phba->fc_stat.LinkDown++;
2179                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2180                                 "1312 Link Down Event x%x received "
2181                                 "Data: x%x x%x x%x\n",
2182                                 la->eventTag, phba->fc_eventTag,
2183                                 phba->pport->port_state, vport->fc_flag);
2184                         lpfc_mbx_issue_link_down(phba);
2185                 } else
2186                         lpfc_enable_la(phba);
2187
2188                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2189                                 "1310 Menlo Maint Mode Link up Event x%x rcvd "
2190                                 "Data: x%x x%x x%x\n",
2191                                 la->eventTag, phba->fc_eventTag,
2192                                 phba->pport->port_state, vport->fc_flag);
2193                 /*
2194                  * The cmnd that triggered this will be waiting for this
2195                  * signal.
2196                  */
2197                 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
2198                 if (phba->wait_4_mlo_maint_flg) {
2199                         phba->wait_4_mlo_maint_flg = 0;
2200                         wake_up_interruptible(&phba->wait_4_mlo_m_q);
2201                 }
2202         }
2203
2204         if (la->fa) {
2205                 if (la->mm)
2206                         lpfc_issue_clear_la(phba, vport);
2207                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
2208                                 "1311 fa %d\n", la->fa);
2209         }
2210
2211 lpfc_mbx_cmpl_read_la_free_mbuf:
2212         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2213         kfree(mp);
2214         mempool_free(pmb, phba->mbox_mem_pool);
2215         return;
2216 }
2217
2218 /*
2219  * This routine handles processing a REG_LOGIN mailbox
2220  * command upon completion. It is setup in the LPFC_MBOXQ
2221  * as the completion routine when the command is
2222  * handed off to the SLI layer.
2223  */
2224 void
2225 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2226 {
2227         struct lpfc_vport  *vport = pmb->vport;
2228         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2229         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2230
2231         pmb->context1 = NULL;
2232
2233         /* Good status, call state machine */
2234         lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
2235         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2236         kfree(mp);
2237         mempool_free(pmb, phba->mbox_mem_pool);
2238         /* decrement the node reference count held for this callback
2239          * function.
2240          */
2241         lpfc_nlp_put(ndlp);
2242
2243         return;
2244 }
2245
2246 static void
2247 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2248 {
2249         MAILBOX_t *mb = &pmb->u.mb;
2250         struct lpfc_vport *vport = pmb->vport;
2251         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2252
2253         switch (mb->mbxStatus) {
2254         case 0x0011:
2255         case 0x0020:
2256         case 0x9700:
2257                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2258                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
2259                                  mb->mbxStatus);
2260                 break;
2261         }
2262         vport->vpi_state &= ~LPFC_VPI_REGISTERED;
2263         vport->unreg_vpi_cmpl = VPORT_OK;
2264         mempool_free(pmb, phba->mbox_mem_pool);
2265         /*
2266          * This shost reference might have been taken at the beginning of
2267          * lpfc_vport_delete()
2268          */
2269         if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport))
2270                 scsi_host_put(shost);
2271 }
2272
2273 int
2274 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
2275 {
2276         struct lpfc_hba  *phba = vport->phba;
2277         LPFC_MBOXQ_t *mbox;
2278         int rc;
2279
2280         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2281         if (!mbox)
2282                 return 1;
2283
2284         lpfc_unreg_vpi(phba, vport->vpi, mbox);
2285         mbox->vport = vport;
2286         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
2287         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2288         if (rc == MBX_NOT_FINISHED) {
2289                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
2290                                  "1800 Could not issue unreg_vpi\n");
2291                 mempool_free(mbox, phba->mbox_mem_pool);
2292                 vport->unreg_vpi_cmpl = VPORT_ERROR;
2293                 return rc;
2294         }
2295         return 0;
2296 }
2297
2298 static void
2299 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2300 {
2301         struct lpfc_vport *vport = pmb->vport;
2302         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2303         MAILBOX_t *mb = &pmb->u.mb;
2304
2305         switch (mb->mbxStatus) {
2306         case 0x0011:
2307         case 0x9601:
2308         case 0x9602:
2309                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2310                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
2311                                  mb->mbxStatus);
2312                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2313                 spin_lock_irq(shost->host_lock);
2314                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2315                 spin_unlock_irq(shost->host_lock);
2316                 vport->fc_myDID = 0;
2317                 goto out;
2318         }
2319
2320         vport->vpi_state |= LPFC_VPI_REGISTERED;
2321         vport->num_disc_nodes = 0;
2322         /* go thru NPR list and issue ELS PLOGIs */
2323         if (vport->fc_npr_cnt)
2324                 lpfc_els_disc_plogi(vport);
2325
2326         if (!vport->num_disc_nodes) {
2327                 spin_lock_irq(shost->host_lock);
2328                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2329                 spin_unlock_irq(shost->host_lock);
2330                 lpfc_can_disctmo(vport);
2331         }
2332         vport->port_state = LPFC_VPORT_READY;
2333
2334 out:
2335         mempool_free(pmb, phba->mbox_mem_pool);
2336         return;
2337 }
2338
2339 /**
2340  * lpfc_create_static_vport - Read HBA config region to create static vports.
2341  * @phba: pointer to lpfc hba data structure.
2342  *
2343  * This routine issue a DUMP mailbox command for config region 22 to get
2344  * the list of static vports to be created. The function create vports
2345  * based on the information returned from the HBA.
2346  **/
2347 void
2348 lpfc_create_static_vport(struct lpfc_hba *phba)
2349 {
2350         LPFC_MBOXQ_t *pmb = NULL;
2351         MAILBOX_t *mb;
2352         struct static_vport_info *vport_info;
2353         int rc = 0, i;
2354         struct fc_vport_identifiers vport_id;
2355         struct fc_vport *new_fc_vport;
2356         struct Scsi_Host *shost;
2357         struct lpfc_vport *vport;
2358         uint16_t offset = 0;
2359         uint8_t *vport_buff;
2360         struct lpfc_dmabuf *mp;
2361         uint32_t byte_count = 0;
2362
2363         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2364         if (!pmb) {
2365                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2366                                 "0542 lpfc_create_static_vport failed to"
2367                                 " allocate mailbox memory\n");
2368                 return;
2369         }
2370
2371         mb = &pmb->u.mb;
2372
2373         vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
2374         if (!vport_info) {
2375                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2376                                 "0543 lpfc_create_static_vport failed to"
2377                                 " allocate vport_info\n");
2378                 mempool_free(pmb, phba->mbox_mem_pool);
2379                 return;
2380         }
2381
2382         vport_buff = (uint8_t *) vport_info;
2383         do {
2384                 if (lpfc_dump_static_vport(phba, pmb, offset))
2385                         goto out;
2386
2387                 pmb->vport = phba->pport;
2388                 rc = lpfc_sli_issue_mbox_wait(phba, pmb, LPFC_MBOX_TMO);
2389
2390                 if ((rc != MBX_SUCCESS) || mb->mbxStatus) {
2391                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2392                                 "0544 lpfc_create_static_vport failed to"
2393                                 " issue dump mailbox command ret 0x%x "
2394                                 "status 0x%x\n",
2395                                 rc, mb->mbxStatus);
2396                         goto out;
2397                 }
2398
2399                 if (phba->sli_rev == LPFC_SLI_REV4) {
2400                         byte_count = pmb->u.mqe.un.mb_words[5];
2401                         mp = (struct lpfc_dmabuf *) pmb->context2;
2402                         if (byte_count > sizeof(struct static_vport_info) -
2403                                         offset)
2404                                 byte_count = sizeof(struct static_vport_info)
2405                                         - offset;
2406                         memcpy(vport_buff + offset, mp->virt, byte_count);
2407                         offset += byte_count;
2408                 } else {
2409                         if (mb->un.varDmp.word_cnt >
2410                                 sizeof(struct static_vport_info) - offset)
2411                                 mb->un.varDmp.word_cnt =
2412                                         sizeof(struct static_vport_info)
2413                                                 - offset;
2414                         byte_count = mb->un.varDmp.word_cnt;
2415                         lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
2416                                 vport_buff + offset,
2417                                 byte_count);
2418
2419                         offset += byte_count;
2420                 }
2421
2422         } while (byte_count &&
2423                 offset < sizeof(struct static_vport_info));
2424
2425
2426         if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
2427                 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
2428                         != VPORT_INFO_REV)) {
2429                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2430                         "0545 lpfc_create_static_vport bad"
2431                         " information header 0x%x 0x%x\n",
2432                         le32_to_cpu(vport_info->signature),
2433                         le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK);
2434
2435                 goto out;
2436         }
2437
2438         shost = lpfc_shost_from_vport(phba->pport);
2439
2440         for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
2441                 memset(&vport_id, 0, sizeof(vport_id));
2442                 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
2443                 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
2444                 if (!vport_id.port_name || !vport_id.node_name)
2445                         continue;
2446
2447                 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
2448                 vport_id.vport_type = FC_PORTTYPE_NPIV;
2449                 vport_id.disable = false;
2450                 new_fc_vport = fc_vport_create(shost, 0, &vport_id);
2451
2452                 if (!new_fc_vport) {
2453                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2454                                 "0546 lpfc_create_static_vport failed to"
2455                                 " create vport\n");
2456                         continue;
2457                 }
2458
2459                 vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
2460                 vport->vport_flag |= STATIC_VPORT;
2461         }
2462
2463 out:
2464         kfree(vport_info);
2465         if (rc != MBX_TIMEOUT) {
2466                 if (pmb->context2) {
2467                         mp = (struct lpfc_dmabuf *) pmb->context2;
2468                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2469                         kfree(mp);
2470                 }
2471                 mempool_free(pmb, phba->mbox_mem_pool);
2472         }
2473
2474         return;
2475 }
2476
2477 /*
2478  * This routine handles processing a Fabric REG_LOGIN mailbox
2479  * command upon completion. It is setup in the LPFC_MBOXQ
2480  * as the completion routine when the command is
2481  * handed off to the SLI layer.
2482  */
2483 void
2484 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2485 {
2486         struct lpfc_vport *vport = pmb->vport;
2487         MAILBOX_t *mb = &pmb->u.mb;
2488         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2489         struct lpfc_nodelist *ndlp;
2490
2491         ndlp = (struct lpfc_nodelist *) pmb->context2;
2492         pmb->context1 = NULL;
2493         pmb->context2 = NULL;
2494         if (mb->mbxStatus) {
2495                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2496                                  "0258 Register Fabric login error: 0x%x\n",
2497                                  mb->mbxStatus);
2498                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2499                 kfree(mp);
2500                 mempool_free(pmb, phba->mbox_mem_pool);
2501
2502                 if (phba->fc_topology == TOPOLOGY_LOOP) {
2503                         /* FLOGI failed, use loop map to make discovery list */
2504                         lpfc_disc_list_loopmap(vport);
2505
2506                         /* Start discovery */
2507                         lpfc_disc_start(vport);
2508                         /* Decrement the reference count to ndlp after the
2509                          * reference to the ndlp are done.
2510                          */
2511                         lpfc_nlp_put(ndlp);
2512                         return;
2513                 }
2514
2515                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2516                 /* Decrement the reference count to ndlp after the reference
2517                  * to the ndlp are done.
2518                  */
2519                 lpfc_nlp_put(ndlp);
2520                 return;
2521         }
2522
2523         ndlp->nlp_rpi = mb->un.varWords[0];
2524         ndlp->nlp_flag |= NLP_RPI_VALID;
2525         ndlp->nlp_type |= NLP_FABRIC;
2526         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2527
2528         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
2529                 lpfc_start_fdiscs(phba);
2530                 lpfc_do_scr_ns_plogi(phba, vport);
2531         }
2532
2533         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2534         kfree(mp);
2535         mempool_free(pmb, phba->mbox_mem_pool);
2536
2537         /* Drop the reference count from the mbox at the end after
2538          * all the current reference to the ndlp have been done.
2539          */
2540         lpfc_nlp_put(ndlp);
2541         return;
2542 }
2543
2544 /*
2545  * This routine handles processing a NameServer REG_LOGIN mailbox
2546  * command upon completion. It is setup in the LPFC_MBOXQ
2547  * as the completion routine when the command is
2548  * handed off to the SLI layer.
2549  */
2550 void
2551 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2552 {
2553         MAILBOX_t *mb = &pmb->u.mb;
2554         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2555         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2556         struct lpfc_vport *vport = pmb->vport;
2557
2558         if (mb->mbxStatus) {
2559 out:
2560                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2561                                  "0260 Register NameServer error: 0x%x\n",
2562                                  mb->mbxStatus);
2563                 /* decrement the node reference count held for this
2564                  * callback function.
2565                  */
2566                 lpfc_nlp_put(ndlp);
2567                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2568                 kfree(mp);
2569                 mempool_free(pmb, phba->mbox_mem_pool);
2570
2571                 /* If no other thread is using the ndlp, free it */
2572                 lpfc_nlp_not_used(ndlp);
2573
2574                 if (phba->fc_topology == TOPOLOGY_LOOP) {
2575                         /*
2576                          * RegLogin failed, use loop map to make discovery
2577                          * list
2578                          */
2579                         lpfc_disc_list_loopmap(vport);
2580
2581                         /* Start discovery */
2582                         lpfc_disc_start(vport);
2583                         return;
2584                 }
2585                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2586                 return;
2587         }
2588
2589         pmb->context1 = NULL;
2590
2591         ndlp->nlp_rpi = mb->un.varWords[0];
2592         ndlp->nlp_flag |= NLP_RPI_VALID;
2593         ndlp->nlp_type |= NLP_FABRIC;
2594         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2595
2596         if (vport->port_state < LPFC_VPORT_READY) {
2597                 /* Link up discovery requires Fabric registration. */
2598                 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
2599                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
2600                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
2601                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
2602                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
2603
2604                 /* Issue SCR just before NameServer GID_FT Query */
2605                 lpfc_issue_els_scr(vport, SCR_DID, 0);
2606         }
2607
2608         vport->fc_ns_retry = 0;
2609         /* Good status, issue CT Request to NameServer */
2610         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
2611                 /* Cannot issue NameServer Query, so finish up discovery */
2612                 goto out;
2613         }
2614
2615         /* decrement the node reference count held for this
2616          * callback function.
2617          */
2618         lpfc_nlp_put(ndlp);
2619         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2620         kfree(mp);
2621         mempool_free(pmb, phba->mbox_mem_pool);
2622
2623         return;
2624 }
2625
2626 static void
2627 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2628 {
2629         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2630         struct fc_rport  *rport;
2631         struct lpfc_rport_data *rdata;
2632         struct fc_rport_identifiers rport_ids;
2633         struct lpfc_hba  *phba = vport->phba;
2634
2635         /* Remote port has reappeared. Re-register w/ FC transport */
2636         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
2637         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
2638         rport_ids.port_id = ndlp->nlp_DID;
2639         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
2640
2641         /*
2642          * We leave our node pointer in rport->dd_data when we unregister a
2643          * FCP target port.  But fc_remote_port_add zeros the space to which
2644          * rport->dd_data points.  So, if we're reusing a previously
2645          * registered port, drop the reference that we took the last time we
2646          * registered the port.
2647          */
2648         if (ndlp->rport && ndlp->rport->dd_data &&
2649             ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
2650                 lpfc_nlp_put(ndlp);
2651
2652         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
2653                 "rport add:       did:x%x flg:x%x type x%x",
2654                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
2655
2656         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
2657         if (!rport || !get_device(&rport->dev)) {
2658                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
2659                            "Warning: fc_remote_port_add failed\n");
2660                 return;
2661         }
2662
2663         /* initialize static port data */
2664         rport->maxframe_size = ndlp->nlp_maxframe;
2665         rport->supported_classes = ndlp->nlp_class_sup;
2666         rdata = rport->dd_data;
2667         rdata->pnode = lpfc_nlp_get(ndlp);
2668
2669         if (ndlp->nlp_type & NLP_FCP_TARGET)
2670                 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
2671         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
2672                 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
2673
2674
2675         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
2676                 fc_remote_port_rolechg(rport, rport_ids.roles);
2677
2678         if ((rport->scsi_target_id != -1) &&
2679             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
2680                 ndlp->nlp_sid = rport->scsi_target_id;
2681         }
2682         return;
2683 }
2684
2685 static void
2686 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
2687 {
2688         struct fc_rport *rport = ndlp->rport;
2689
2690         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
2691                 "rport delete:    did:x%x flg:x%x type x%x",
2692                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
2693
2694         fc_remote_port_delete(rport);
2695
2696         return;
2697 }
2698
2699 static void
2700 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
2701 {
2702         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2703
2704         spin_lock_irq(shost->host_lock);
2705         switch (state) {
2706         case NLP_STE_UNUSED_NODE:
2707                 vport->fc_unused_cnt += count;
2708                 break;
2709         case NLP_STE_PLOGI_ISSUE:
2710                 vport->fc_plogi_cnt += count;
2711                 break;
2712         case NLP_STE_ADISC_ISSUE:
2713                 vport->fc_adisc_cnt += count;
2714                 break;
2715         case NLP_STE_REG_LOGIN_ISSUE:
2716                 vport->fc_reglogin_cnt += count;
2717                 break;
2718         case NLP_STE_PRLI_ISSUE:
2719                 vport->fc_prli_cnt += count;
2720                 break;
2721         case NLP_STE_UNMAPPED_NODE:
2722                 vport->fc_unmap_cnt += count;
2723                 break;
2724         case NLP_STE_MAPPED_NODE:
2725                 vport->fc_map_cnt += count;
2726                 break;
2727         case NLP_STE_NPR_NODE:
2728                 vport->fc_npr_cnt += count;
2729                 break;
2730         }
2731         spin_unlock_irq(shost->host_lock);
2732 }
2733
2734 static void
2735 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2736                        int old_state, int new_state)
2737 {
2738         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2739
2740         if (new_state == NLP_STE_UNMAPPED_NODE) {
2741                 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
2742                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
2743                 ndlp->nlp_type |= NLP_FC_NODE;
2744         }
2745         if (new_state == NLP_STE_MAPPED_NODE)
2746                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
2747         if (new_state == NLP_STE_NPR_NODE)
2748                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
2749
2750         /* Transport interface */
2751         if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
2752                             old_state == NLP_STE_UNMAPPED_NODE)) {
2753                 vport->phba->nport_event_cnt++;
2754                 lpfc_unregister_remote_port(ndlp);
2755         }
2756
2757         if (new_state ==  NLP_STE_MAPPED_NODE ||
2758             new_state == NLP_STE_UNMAPPED_NODE) {
2759                 vport->phba->nport_event_cnt++;
2760                 /*
2761                  * Tell the fc transport about the port, if we haven't
2762                  * already. If we have, and it's a scsi entity, be
2763                  * sure to unblock any attached scsi devices
2764                  */
2765                 lpfc_register_remote_port(vport, ndlp);
2766         }
2767         if ((new_state ==  NLP_STE_MAPPED_NODE) &&
2768                 (vport->stat_data_enabled)) {
2769                 /*
2770                  * A new target is discovered, if there is no buffer for
2771                  * statistical data collection allocate buffer.
2772                  */
2773                 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
2774                                          sizeof(struct lpfc_scsicmd_bkt),
2775                                          GFP_KERNEL);
2776
2777                 if (!ndlp->lat_data)
2778                         lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
2779                                 "0286 lpfc_nlp_state_cleanup failed to "
2780                                 "allocate statistical data buffer DID "
2781                                 "0x%x\n", ndlp->nlp_DID);
2782         }
2783         /*
2784          * if we added to Mapped list, but the remote port
2785          * registration failed or assigned a target id outside
2786          * our presentable range - move the node to the
2787          * Unmapped List
2788          */
2789         if (new_state == NLP_STE_MAPPED_NODE &&
2790             (!ndlp->rport ||
2791              ndlp->rport->scsi_target_id == -1 ||
2792              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
2793                 spin_lock_irq(shost->host_lock);
2794                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
2795                 spin_unlock_irq(shost->host_lock);
2796                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2797         }
2798 }
2799
2800 static char *
2801 lpfc_nlp_state_name(char *buffer, size_t size, int state)
2802 {
2803         static char *states[] = {
2804                 [NLP_STE_UNUSED_NODE] = "UNUSED",
2805                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
2806                 [NLP_STE_ADISC_ISSUE] = "ADISC",
2807                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
2808                 [NLP_STE_PRLI_ISSUE] = "PRLI",
2809                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
2810                 [NLP_STE_MAPPED_NODE] = "MAPPED",
2811                 [NLP_STE_NPR_NODE] = "NPR",
2812         };
2813
2814         if (state < NLP_STE_MAX_STATE && states[state])
2815                 strlcpy(buffer, states[state], size);
2816         else
2817                 snprintf(buffer, size, "unknown (%d)", state);
2818         return buffer;
2819 }
2820
2821 void
2822 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2823                    int state)
2824 {
2825         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2826         int  old_state = ndlp->nlp_state;
2827         char name1[16], name2[16];
2828
2829         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2830                          "0904 NPort state transition x%06x, %s -> %s\n",
2831                          ndlp->nlp_DID,
2832                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
2833                          lpfc_nlp_state_name(name2, sizeof(name2), state));
2834
2835         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2836                 "node statechg    did:x%x old:%d ste:%d",
2837                 ndlp->nlp_DID, old_state, state);
2838
2839         if (old_state == NLP_STE_NPR_NODE &&
2840             state != NLP_STE_NPR_NODE)
2841                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2842         if (old_state == NLP_STE_UNMAPPED_NODE) {
2843                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
2844                 ndlp->nlp_type &= ~NLP_FC_NODE;
2845         }
2846
2847         if (list_empty(&ndlp->nlp_listp)) {
2848                 spin_lock_irq(shost->host_lock);
2849                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
2850                 spin_unlock_irq(shost->host_lock);
2851         } else if (old_state)
2852                 lpfc_nlp_counters(vport, old_state, -1);
2853
2854         ndlp->nlp_state = state;
2855         lpfc_nlp_counters(vport, state, 1);
2856         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
2857 }
2858
2859 void
2860 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2861 {
2862         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2863
2864         if (list_empty(&ndlp->nlp_listp)) {
2865                 spin_lock_irq(shost->host_lock);
2866                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
2867                 spin_unlock_irq(shost->host_lock);
2868         }
2869 }
2870
2871 void
2872 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2873 {
2874         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2875
2876         lpfc_cancel_retry_delay_tmo(vport, ndlp);
2877         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
2878                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
2879         spin_lock_irq(shost->host_lock);
2880         list_del_init(&ndlp->nlp_listp);
2881         spin_unlock_irq(shost->host_lock);
2882         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
2883                                 NLP_STE_UNUSED_NODE);
2884 }
2885
2886 static void
2887 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2888 {
2889         lpfc_cancel_retry_delay_tmo(vport, ndlp);
2890         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
2891                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
2892         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
2893                                 NLP_STE_UNUSED_NODE);
2894 }
2895 /**
2896  * lpfc_initialize_node - Initialize all fields of node object
2897  * @vport: Pointer to Virtual Port object.
2898  * @ndlp: Pointer to FC node object.
2899  * @did: FC_ID of the node.
2900  *
2901  * This function is always called when node object need to be initialized.
2902  * It initializes all the fields of the node object. Although the reference
2903  * to phba from @ndlp can be obtained indirectly through it's reference to
2904  * @vport, a direct reference to phba is taken here by @ndlp. This is due
2905  * to the life-span of the @ndlp might go beyond the existence of @vport as
2906  * the final release of ndlp is determined by its reference count. And, the
2907  * operation on @ndlp needs the reference to phba.
2908  **/
2909 static inline void
2910 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2911         uint32_t did)
2912 {
2913         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
2914         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
2915         init_timer(&ndlp->nlp_delayfunc);
2916         ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
2917         ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
2918         ndlp->nlp_DID = did;
2919         ndlp->vport = vport;
2920         ndlp->phba = vport->phba;
2921         ndlp->nlp_sid = NLP_NO_SID;
2922         kref_init(&ndlp->kref);
2923         NLP_INT_NODE_ACT(ndlp);
2924         atomic_set(&ndlp->cmd_pending, 0);
2925         ndlp->cmd_qdepth = LPFC_MAX_TGT_QDEPTH;
2926 }
2927
2928 struct lpfc_nodelist *
2929 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2930                  int state)
2931 {
2932         struct lpfc_hba *phba = vport->phba;
2933         uint32_t did;
2934         unsigned long flags;
2935
2936         if (!ndlp)
2937                 return NULL;
2938
2939         spin_lock_irqsave(&phba->ndlp_lock, flags);
2940         /* The ndlp should not be in memory free mode */
2941         if (NLP_CHK_FREE_REQ(ndlp)) {
2942                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
2943                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2944                                 "0277 lpfc_enable_node: ndlp:x%p "
2945                                 "usgmap:x%x refcnt:%d\n",
2946                                 (void *)ndlp, ndlp->nlp_usg_map,
2947                                 atomic_read(&ndlp->kref.refcount));
2948                 return NULL;
2949         }
2950         /* The ndlp should not already be in active mode */
2951         if (NLP_CHK_NODE_ACT(ndlp)) {
2952                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
2953                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2954                                 "0278 lpfc_enable_node: ndlp:x%p "
2955                                 "usgmap:x%x refcnt:%d\n",
2956                                 (void *)ndlp, ndlp->nlp_usg_map,
2957                                 atomic_read(&ndlp->kref.refcount));
2958                 return NULL;
2959         }
2960
2961         /* Keep the original DID */
2962         did = ndlp->nlp_DID;
2963
2964         /* re-initialize ndlp except of ndlp linked list pointer */
2965         memset((((char *)ndlp) + sizeof (struct list_head)), 0,
2966                 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
2967         lpfc_initialize_node(vport, ndlp, did);
2968
2969         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
2970
2971         if (state != NLP_STE_UNUSED_NODE)
2972                 lpfc_nlp_set_state(vport, ndlp, state);
2973
2974         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2975                 "node enable:       did:x%x",
2976                 ndlp->nlp_DID, 0, 0);
2977         return ndlp;
2978 }
2979
2980 void
2981 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2982 {
2983         /*
2984          * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
2985          * be used if we wish to issue the "last" lpfc_nlp_put() to remove
2986          * the ndlp from the vport. The ndlp marked as UNUSED on the list
2987          * until ALL other outstanding threads have completed. We check
2988          * that the ndlp not already in the UNUSED state before we proceed.
2989          */
2990         if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
2991                 return;
2992         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
2993         lpfc_nlp_put(ndlp);
2994         return;
2995 }
2996
2997 /*
2998  * Start / ReStart rescue timer for Discovery / RSCN handling
2999  */
3000 void
3001 lpfc_set_disctmo(struct lpfc_vport *vport)
3002 {
3003         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3004         struct lpfc_hba  *phba = vport->phba;
3005         uint32_t tmo;
3006
3007         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
3008                 /* For FAN, timeout should be greater than edtov */
3009                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
3010         } else {
3011                 /* Normal discovery timeout should be > than ELS/CT timeout
3012                  * FC spec states we need 3 * ratov for CT requests
3013                  */
3014                 tmo = ((phba->fc_ratov * 3) + 3);
3015         }
3016
3017
3018         if (!timer_pending(&vport->fc_disctmo)) {
3019                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3020                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
3021                         tmo, vport->port_state, vport->fc_flag);
3022         }
3023
3024         mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
3025         spin_lock_irq(shost->host_lock);
3026         vport->fc_flag |= FC_DISC_TMO;
3027         spin_unlock_irq(shost->host_lock);
3028
3029         /* Start Discovery Timer state <hba_state> */
3030         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3031                          "0247 Start Discovery Timer state x%x "
3032                          "Data: x%x x%lx x%x x%x\n",
3033                          vport->port_state, tmo,
3034                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
3035                          vport->fc_adisc_cnt);
3036
3037         return;
3038 }
3039
3040 /*
3041  * Cancel rescue timer for Discovery / RSCN handling
3042  */
3043 int
3044 lpfc_can_disctmo(struct lpfc_vport *vport)
3045 {
3046         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3047         unsigned long iflags;
3048