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[SCSI] lpfc 8.2.2 : Style cleanups
[deliverable/linux.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) 2004-2007 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
6 * www.emulex.com *
7 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
8 * *
9 * This program is free software; you can redistribute it and/or *
10 * modify it under the terms of version 2 of the GNU General *
11 * Public License as published by the Free Software Foundation. *
12 * This program is distributed in the hope that it will be useful. *
13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
17 * TO BE LEGALLY INVALID. See the GNU General Public License for *
18 * more details, a copy of which can be found in the file COPYING *
19 * included with this package. *
20 *******************************************************************/
21
22 #include <linux/blkdev.h>
23 #include <linux/pci.h>
24 #include <linux/kthread.h>
25 #include <linux/interrupt.h>
26
27 #include <scsi/scsi.h>
28 #include <scsi/scsi_device.h>
29 #include <scsi/scsi_host.h>
30 #include <scsi/scsi_transport_fc.h>
31
32 #include "lpfc_hw.h"
33 #include "lpfc_disc.h"
34 #include "lpfc_sli.h"
35 #include "lpfc_scsi.h"
36 #include "lpfc.h"
37 #include "lpfc_logmsg.h"
38 #include "lpfc_crtn.h"
39 #include "lpfc_vport.h"
40 #include "lpfc_debugfs.h"
41
42 /* AlpaArray for assignment of scsid for scan-down and bind_method */
43 static uint8_t lpfcAlpaArray[] = {
44 0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
45 0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
46 0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
47 0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
48 0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
49 0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
50 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
51 0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
52 0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
53 0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
54 0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
55 0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
56 0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
57 };
58
59 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
60
61 void
62 lpfc_terminate_rport_io(struct fc_rport *rport)
63 {
64 struct lpfc_rport_data *rdata;
65 struct lpfc_nodelist * ndlp;
66 struct lpfc_hba *phba;
67
68 rdata = rport->dd_data;
69 ndlp = rdata->pnode;
70
71 if (!ndlp) {
72 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
73 printk(KERN_ERR "Cannot find remote node"
74 " to terminate I/O Data x%x\n",
75 rport->port_id);
76 return;
77 }
78
79 phba = ndlp->vport->phba;
80
81 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
82 "rport terminate: sid:x%x did:x%x flg:x%x",
83 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
84
85 if (ndlp->nlp_sid != NLP_NO_SID) {
86 lpfc_sli_abort_iocb(ndlp->vport,
87 &phba->sli.ring[phba->sli.fcp_ring],
88 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
89 }
90
91 /*
92 * A device is normally blocked for rediscovery and unblocked when
93 * devloss timeout happens. In case a vport is removed or driver
94 * unloaded before devloss timeout happens, we need to unblock here.
95 */
96 scsi_target_unblock(&rport->dev);
97 return;
98 }
99
100 /*
101 * This function will be called when dev_loss_tmo fire.
102 */
103 void
104 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
105 {
106 struct lpfc_rport_data *rdata;
107 struct lpfc_nodelist * ndlp;
108 struct lpfc_vport *vport;
109 struct lpfc_hba *phba;
110 struct completion devloss_compl;
111 struct lpfc_work_evt *evtp;
112
113 rdata = rport->dd_data;
114 ndlp = rdata->pnode;
115
116 if (!ndlp) {
117 if (rport->scsi_target_id != -1) {
118 printk(KERN_ERR "Cannot find remote node"
119 " for rport in dev_loss_tmo_callbk x%x\n",
120 rport->port_id);
121 }
122 return;
123 }
124
125 vport = ndlp->vport;
126 phba = vport->phba;
127
128 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
129 "rport devlosscb: sid:x%x did:x%x flg:x%x",
130 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
131
132 init_completion(&devloss_compl);
133 evtp = &ndlp->dev_loss_evt;
134
135 if (!list_empty(&evtp->evt_listp))
136 return;
137
138 spin_lock_irq(&phba->hbalock);
139 evtp->evt_arg1 = ndlp;
140 evtp->evt_arg2 = &devloss_compl;
141 evtp->evt = LPFC_EVT_DEV_LOSS;
142 list_add_tail(&evtp->evt_listp, &phba->work_list);
143 if (phba->work_wait)
144 wake_up(phba->work_wait);
145
146 spin_unlock_irq(&phba->hbalock);
147
148 wait_for_completion(&devloss_compl);
149
150 return;
151 }
152
153 /*
154 * This function is called from the worker thread when dev_loss_tmo
155 * expire.
156 */
157 void
158 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
159 {
160 struct lpfc_rport_data *rdata;
161 struct fc_rport *rport;
162 struct lpfc_vport *vport;
163 struct lpfc_hba *phba;
164 uint8_t *name;
165 int warn_on = 0;
166
167 rport = ndlp->rport;
168
169 if (!rport)
170 return;
171
172 rdata = rport->dd_data;
173 name = (uint8_t *) &ndlp->nlp_portname;
174 vport = ndlp->vport;
175 phba = vport->phba;
176
177 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
178 "rport devlosstmo:did:x%x type:x%x id:x%x",
179 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
180
181 if (!(vport->load_flag & FC_UNLOADING) &&
182 ndlp->nlp_state == NLP_STE_MAPPED_NODE)
183 return;
184
185 if (ndlp->nlp_type & NLP_FABRIC) {
186 int put_node;
187 int put_rport;
188
189 /* We will clean up these Nodes in linkup */
190 put_node = rdata->pnode != NULL;
191 put_rport = ndlp->rport != NULL;
192 rdata->pnode = NULL;
193 ndlp->rport = NULL;
194 if (put_node)
195 lpfc_nlp_put(ndlp);
196 if (put_rport)
197 put_device(&rport->dev);
198 return;
199 }
200
201 if (ndlp->nlp_sid != NLP_NO_SID) {
202 warn_on = 1;
203 /* flush the target */
204 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
205 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
206 }
207 if (vport->load_flag & FC_UNLOADING)
208 warn_on = 0;
209
210 if (warn_on) {
211 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
212 "0203 Devloss timeout on "
213 "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
214 "NPort x%x Data: x%x x%x x%x\n",
215 *name, *(name+1), *(name+2), *(name+3),
216 *(name+4), *(name+5), *(name+6), *(name+7),
217 ndlp->nlp_DID, ndlp->nlp_flag,
218 ndlp->nlp_state, ndlp->nlp_rpi);
219 } else {
220 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
221 "0204 Devloss timeout on "
222 "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
223 "NPort x%x Data: x%x x%x x%x\n",
224 *name, *(name+1), *(name+2), *(name+3),
225 *(name+4), *(name+5), *(name+6), *(name+7),
226 ndlp->nlp_DID, ndlp->nlp_flag,
227 ndlp->nlp_state, ndlp->nlp_rpi);
228 }
229
230 if (!(vport->load_flag & FC_UNLOADING) &&
231 !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
232 !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
233 (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE))
234 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
235 else {
236 int put_node;
237 int put_rport;
238
239 put_node = rdata->pnode != NULL;
240 put_rport = ndlp->rport != NULL;
241 rdata->pnode = NULL;
242 ndlp->rport = NULL;
243 if (put_node)
244 lpfc_nlp_put(ndlp);
245 if (put_rport)
246 put_device(&rport->dev);
247 }
248 }
249
250
251 void
252 lpfc_worker_wake_up(struct lpfc_hba *phba)
253 {
254 wake_up(phba->work_wait);
255 return;
256 }
257
258 static void
259 lpfc_work_list_done(struct lpfc_hba *phba)
260 {
261 struct lpfc_work_evt *evtp = NULL;
262 struct lpfc_nodelist *ndlp;
263 struct lpfc_vport *vport;
264 int free_evt;
265
266 spin_lock_irq(&phba->hbalock);
267 while (!list_empty(&phba->work_list)) {
268 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
269 evt_listp);
270 spin_unlock_irq(&phba->hbalock);
271 free_evt = 1;
272 switch (evtp->evt) {
273 case LPFC_EVT_DEV_LOSS_DELAY:
274 free_evt = 0; /* evt is part of ndlp */
275 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
276 vport = ndlp->vport;
277 if (!vport)
278 break;
279
280 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
281 "rport devlossdly:did:x%x flg:x%x",
282 ndlp->nlp_DID, ndlp->nlp_flag, 0);
283
284 if (!(vport->load_flag & FC_UNLOADING) &&
285 !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
286 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
287 lpfc_disc_state_machine(vport, ndlp, NULL,
288 NLP_EVT_DEVICE_RM);
289 }
290 break;
291 case LPFC_EVT_ELS_RETRY:
292 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
293 lpfc_els_retry_delay_handler(ndlp);
294 free_evt = 0; /* evt is part of ndlp */
295 break;
296 case LPFC_EVT_DEV_LOSS:
297 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
298 lpfc_nlp_get(ndlp);
299 lpfc_dev_loss_tmo_handler(ndlp);
300 free_evt = 0;
301 complete((struct completion *)(evtp->evt_arg2));
302 lpfc_nlp_put(ndlp);
303 break;
304 case LPFC_EVT_ONLINE:
305 if (phba->link_state < LPFC_LINK_DOWN)
306 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
307 else
308 *(int *) (evtp->evt_arg1) = 0;
309 complete((struct completion *)(evtp->evt_arg2));
310 break;
311 case LPFC_EVT_OFFLINE_PREP:
312 if (phba->link_state >= LPFC_LINK_DOWN)
313 lpfc_offline_prep(phba);
314 *(int *)(evtp->evt_arg1) = 0;
315 complete((struct completion *)(evtp->evt_arg2));
316 break;
317 case LPFC_EVT_OFFLINE:
318 lpfc_offline(phba);
319 lpfc_sli_brdrestart(phba);
320 *(int *)(evtp->evt_arg1) =
321 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
322 lpfc_unblock_mgmt_io(phba);
323 complete((struct completion *)(evtp->evt_arg2));
324 break;
325 case LPFC_EVT_WARM_START:
326 lpfc_offline(phba);
327 lpfc_reset_barrier(phba);
328 lpfc_sli_brdreset(phba);
329 lpfc_hba_down_post(phba);
330 *(int *)(evtp->evt_arg1) =
331 lpfc_sli_brdready(phba, HS_MBRDY);
332 lpfc_unblock_mgmt_io(phba);
333 complete((struct completion *)(evtp->evt_arg2));
334 break;
335 case LPFC_EVT_KILL:
336 lpfc_offline(phba);
337 *(int *)(evtp->evt_arg1)
338 = (phba->pport->stopped)
339 ? 0 : lpfc_sli_brdkill(phba);
340 lpfc_unblock_mgmt_io(phba);
341 complete((struct completion *)(evtp->evt_arg2));
342 break;
343 }
344 if (free_evt)
345 kfree(evtp);
346 spin_lock_irq(&phba->hbalock);
347 }
348 spin_unlock_irq(&phba->hbalock);
349
350 }
351
352 static void
353 lpfc_work_done(struct lpfc_hba *phba)
354 {
355 struct lpfc_sli_ring *pring;
356 uint32_t ha_copy, status, control, work_port_events;
357 struct lpfc_vport **vports;
358 struct lpfc_vport *vport;
359 int i;
360
361 spin_lock_irq(&phba->hbalock);
362 ha_copy = phba->work_ha;
363 phba->work_ha = 0;
364 spin_unlock_irq(&phba->hbalock);
365
366 if (ha_copy & HA_ERATT)
367 lpfc_handle_eratt(phba);
368
369 if (ha_copy & HA_MBATT)
370 lpfc_sli_handle_mb_event(phba);
371
372 if (ha_copy & HA_LATT)
373 lpfc_handle_latt(phba);
374 vports = lpfc_create_vport_work_array(phba);
375 if (vports != NULL)
376 for(i = 0; i < LPFC_MAX_VPORTS; i++) {
377 /*
378 * We could have no vports in array if unloading, so if
379 * this happens then just use the pport
380 */
381 if (vports[i] == NULL && i == 0)
382 vport = phba->pport;
383 else
384 vport = vports[i];
385 if (vport == NULL)
386 break;
387 work_port_events = vport->work_port_events;
388 if (work_port_events & WORKER_DISC_TMO)
389 lpfc_disc_timeout_handler(vport);
390 if (work_port_events & WORKER_ELS_TMO)
391 lpfc_els_timeout_handler(vport);
392 if (work_port_events & WORKER_HB_TMO)
393 lpfc_hb_timeout_handler(phba);
394 if (work_port_events & WORKER_MBOX_TMO)
395 lpfc_mbox_timeout_handler(phba);
396 if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
397 lpfc_unblock_fabric_iocbs(phba);
398 if (work_port_events & WORKER_FDMI_TMO)
399 lpfc_fdmi_timeout_handler(vport);
400 if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
401 lpfc_ramp_down_queue_handler(phba);
402 if (work_port_events & WORKER_RAMP_UP_QUEUE)
403 lpfc_ramp_up_queue_handler(phba);
404 spin_lock_irq(&vport->work_port_lock);
405 vport->work_port_events &= ~work_port_events;
406 spin_unlock_irq(&vport->work_port_lock);
407 }
408 lpfc_destroy_vport_work_array(vports);
409
410 pring = &phba->sli.ring[LPFC_ELS_RING];
411 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING)));
412 status >>= (4*LPFC_ELS_RING);
413 if ((status & HA_RXMASK)
414 || (pring->flag & LPFC_DEFERRED_RING_EVENT)) {
415 if (pring->flag & LPFC_STOP_IOCB_MASK) {
416 pring->flag |= LPFC_DEFERRED_RING_EVENT;
417 } else {
418 lpfc_sli_handle_slow_ring_event(phba, pring,
419 (status &
420 HA_RXMASK));
421 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
422 }
423 /*
424 * Turn on Ring interrupts
425 */
426 spin_lock_irq(&phba->hbalock);
427 control = readl(phba->HCregaddr);
428 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
429 lpfc_debugfs_slow_ring_trc(phba,
430 "WRK Enable ring: cntl:x%x hacopy:x%x",
431 control, ha_copy, 0);
432
433 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
434 writel(control, phba->HCregaddr);
435 readl(phba->HCregaddr); /* flush */
436 }
437 else {
438 lpfc_debugfs_slow_ring_trc(phba,
439 "WRK Ring ok: cntl:x%x hacopy:x%x",
440 control, ha_copy, 0);
441 }
442 spin_unlock_irq(&phba->hbalock);
443 }
444 lpfc_work_list_done(phba);
445 }
446
447 static int
448 check_work_wait_done(struct lpfc_hba *phba)
449 {
450 struct lpfc_vport *vport;
451 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
452 int rc = 0;
453
454 spin_lock_irq(&phba->hbalock);
455 list_for_each_entry(vport, &phba->port_list, listentry) {
456 if (vport->work_port_events) {
457 rc = 1;
458 break;
459 }
460 }
461 if (rc || phba->work_ha || (!list_empty(&phba->work_list)) ||
462 kthread_should_stop() || pring->flag & LPFC_DEFERRED_RING_EVENT) {
463 rc = 1;
464 phba->work_found++;
465 } else
466 phba->work_found = 0;
467 spin_unlock_irq(&phba->hbalock);
468 return rc;
469 }
470
471
472 int
473 lpfc_do_work(void *p)
474 {
475 struct lpfc_hba *phba = p;
476 int rc;
477 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(work_waitq);
478
479 set_user_nice(current, -20);
480 phba->work_wait = &work_waitq;
481 phba->work_found = 0;
482
483 while (1) {
484
485 rc = wait_event_interruptible(work_waitq,
486 check_work_wait_done(phba));
487
488 BUG_ON(rc);
489
490 if (kthread_should_stop())
491 break;
492
493 lpfc_work_done(phba);
494
495 /* If there is alot of slow ring work, like during link up
496 * check_work_wait_done() may cause this thread to not give
497 * up the CPU for very long periods of time. This may cause
498 * soft lockups or other problems. To avoid these situations
499 * give up the CPU here after LPFC_MAX_WORKER_ITERATION
500 * consecutive iterations.
501 */
502 if (phba->work_found >= LPFC_MAX_WORKER_ITERATION) {
503 phba->work_found = 0;
504 schedule();
505 }
506 }
507 phba->work_wait = NULL;
508 return 0;
509 }
510
511 /*
512 * This is only called to handle FC worker events. Since this a rare
513 * occurance, we allocate a struct lpfc_work_evt structure here instead of
514 * embedding it in the IOCB.
515 */
516 int
517 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
518 uint32_t evt)
519 {
520 struct lpfc_work_evt *evtp;
521 unsigned long flags;
522
523 /*
524 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
525 * be queued to worker thread for processing
526 */
527 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
528 if (!evtp)
529 return 0;
530
531 evtp->evt_arg1 = arg1;
532 evtp->evt_arg2 = arg2;
533 evtp->evt = evt;
534
535 spin_lock_irqsave(&phba->hbalock, flags);
536 list_add_tail(&evtp->evt_listp, &phba->work_list);
537 if (phba->work_wait)
538 lpfc_worker_wake_up(phba);
539 spin_unlock_irqrestore(&phba->hbalock, flags);
540
541 return 1;
542 }
543
544 void
545 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
546 {
547 struct lpfc_hba *phba = vport->phba;
548 struct lpfc_nodelist *ndlp, *next_ndlp;
549 int rc;
550
551 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
552 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
553 continue;
554
555 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN)
556 lpfc_unreg_rpi(vport, ndlp);
557
558 /* Leave Fabric nodes alone on link down */
559 if (!remove && ndlp->nlp_type & NLP_FABRIC)
560 continue;
561 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
562 remove
563 ? NLP_EVT_DEVICE_RM
564 : NLP_EVT_DEVICE_RECOVERY);
565 }
566 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
567 lpfc_mbx_unreg_vpi(vport);
568 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
569 }
570 }
571
572 static void
573 lpfc_linkdown_port(struct lpfc_vport *vport)
574 {
575 struct lpfc_nodelist *ndlp, *next_ndlp;
576 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
577
578 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
579
580 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
581 "Link Down: state:x%x rtry:x%x flg:x%x",
582 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
583
584 /* Cleanup any outstanding RSCN activity */
585 lpfc_els_flush_rscn(vport);
586
587 /* Cleanup any outstanding ELS commands */
588 lpfc_els_flush_cmd(vport);
589
590 lpfc_cleanup_rpis(vport, 0);
591
592 /* free any ndlp's on unused list */
593 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp)
594 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
595 lpfc_drop_node(vport, ndlp);
596
597 /* Turn off discovery timer if its running */
598 lpfc_can_disctmo(vport);
599 }
600
601 int
602 lpfc_linkdown(struct lpfc_hba *phba)
603 {
604 struct lpfc_vport *vport = phba->pport;
605 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
606 struct lpfc_vport **vports;
607 LPFC_MBOXQ_t *mb;
608 int i;
609
610 if (phba->link_state == LPFC_LINK_DOWN) {
611 return 0;
612 }
613 spin_lock_irq(&phba->hbalock);
614 if (phba->link_state > LPFC_LINK_DOWN) {
615 phba->link_state = LPFC_LINK_DOWN;
616 phba->pport->fc_flag &= ~FC_LBIT;
617 }
618 spin_unlock_irq(&phba->hbalock);
619 vports = lpfc_create_vport_work_array(phba);
620 if (vports != NULL)
621 for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++) {
622 /* Issue a LINK DOWN event to all nodes */
623 lpfc_linkdown_port(vports[i]);
624 }
625 lpfc_destroy_vport_work_array(vports);
626 /* Clean up any firmware default rpi's */
627 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
628 if (mb) {
629 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
630 mb->vport = vport;
631 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
632 if (lpfc_sli_issue_mbox(phba, mb, (MBX_NOWAIT | MBX_STOP_IOCB))
633 == MBX_NOT_FINISHED) {
634 mempool_free(mb, phba->mbox_mem_pool);
635 }
636 }
637
638 /* Setup myDID for link up if we are in pt2pt mode */
639 if (phba->pport->fc_flag & FC_PT2PT) {
640 phba->pport->fc_myDID = 0;
641 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
642 if (mb) {
643 lpfc_config_link(phba, mb);
644 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
645 mb->vport = vport;
646 if (lpfc_sli_issue_mbox(phba, mb,
647 (MBX_NOWAIT | MBX_STOP_IOCB))
648 == MBX_NOT_FINISHED) {
649 mempool_free(mb, phba->mbox_mem_pool);
650 }
651 }
652 spin_lock_irq(shost->host_lock);
653 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
654 spin_unlock_irq(shost->host_lock);
655 }
656
657 return 0;
658 }
659
660 static void
661 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
662 {
663 struct lpfc_nodelist *ndlp;
664
665 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
666 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
667 continue;
668
669 if (ndlp->nlp_type & NLP_FABRIC) {
670 /* On Linkup its safe to clean up the ndlp
671 * from Fabric connections.
672 */
673 if (ndlp->nlp_DID != Fabric_DID)
674 lpfc_unreg_rpi(vport, ndlp);
675 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
676 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
677 /* Fail outstanding IO now since device is
678 * marked for PLOGI.
679 */
680 lpfc_unreg_rpi(vport, ndlp);
681 }
682 }
683 }
684
685 static void
686 lpfc_linkup_port(struct lpfc_vport *vport)
687 {
688 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
689 struct lpfc_nodelist *ndlp, *next_ndlp;
690 struct lpfc_hba *phba = vport->phba;
691
692 if ((vport->load_flag & FC_UNLOADING) != 0)
693 return;
694
695 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
696 "Link Up: top:x%x speed:x%x flg:x%x",
697 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
698
699 /* If NPIV is not enabled, only bring the physical port up */
700 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
701 (vport != phba->pport))
702 return;
703
704 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
705
706 spin_lock_irq(shost->host_lock);
707 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
708 FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
709 vport->fc_flag |= FC_NDISC_ACTIVE;
710 vport->fc_ns_retry = 0;
711 spin_unlock_irq(shost->host_lock);
712
713 if (vport->fc_flag & FC_LBIT)
714 lpfc_linkup_cleanup_nodes(vport);
715
716 /* free any ndlp's in unused state */
717 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
718 nlp_listp)
719 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
720 lpfc_drop_node(vport, ndlp);
721 }
722
723 static int
724 lpfc_linkup(struct lpfc_hba *phba)
725 {
726 struct lpfc_vport **vports;
727 int i;
728
729 phba->link_state = LPFC_LINK_UP;
730
731 /* Unblock fabric iocbs if they are blocked */
732 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
733 del_timer_sync(&phba->fabric_block_timer);
734
735 vports = lpfc_create_vport_work_array(phba);
736 if (vports != NULL)
737 for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++)
738 lpfc_linkup_port(vports[i]);
739 lpfc_destroy_vport_work_array(vports);
740 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
741 lpfc_issue_clear_la(phba, phba->pport);
742
743 return 0;
744 }
745
746 /*
747 * This routine handles processing a CLEAR_LA mailbox
748 * command upon completion. It is setup in the LPFC_MBOXQ
749 * as the completion routine when the command is
750 * handed off to the SLI layer.
751 */
752 void
753 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
754 {
755 struct lpfc_vport *vport = pmb->vport;
756 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
757 struct lpfc_sli *psli = &phba->sli;
758 MAILBOX_t *mb = &pmb->mb;
759 uint32_t control;
760
761 /* Since we don't do discovery right now, turn these off here */
762 psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
763 psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
764 psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
765
766 /* Check for error */
767 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
768 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
769 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
770 "0320 CLEAR_LA mbxStatus error x%x hba "
771 "state x%x\n",
772 mb->mbxStatus, vport->port_state);
773 phba->link_state = LPFC_HBA_ERROR;
774 goto out;
775 }
776
777 if (vport->port_type == LPFC_PHYSICAL_PORT)
778 phba->link_state = LPFC_HBA_READY;
779
780 spin_lock_irq(&phba->hbalock);
781 psli->sli_flag |= LPFC_PROCESS_LA;
782 control = readl(phba->HCregaddr);
783 control |= HC_LAINT_ENA;
784 writel(control, phba->HCregaddr);
785 readl(phba->HCregaddr); /* flush */
786 spin_unlock_irq(&phba->hbalock);
787 return;
788
789 vport->num_disc_nodes = 0;
790 /* go thru NPR nodes and issue ELS PLOGIs */
791 if (vport->fc_npr_cnt)
792 lpfc_els_disc_plogi(vport);
793
794 if (!vport->num_disc_nodes) {
795 spin_lock_irq(shost->host_lock);
796 vport->fc_flag &= ~FC_NDISC_ACTIVE;
797 spin_unlock_irq(shost->host_lock);
798 }
799
800 vport->port_state = LPFC_VPORT_READY;
801
802 out:
803 /* Device Discovery completes */
804 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
805 "0225 Device Discovery completes\n");
806 mempool_free(pmb, phba->mbox_mem_pool);
807
808 spin_lock_irq(shost->host_lock);
809 vport->fc_flag &= ~(FC_ABORT_DISCOVERY | FC_ESTABLISH_LINK);
810 spin_unlock_irq(shost->host_lock);
811
812 del_timer_sync(&phba->fc_estabtmo);
813
814 lpfc_can_disctmo(vport);
815
816 /* turn on Link Attention interrupts */
817
818 spin_lock_irq(&phba->hbalock);
819 psli->sli_flag |= LPFC_PROCESS_LA;
820 control = readl(phba->HCregaddr);
821 control |= HC_LAINT_ENA;
822 writel(control, phba->HCregaddr);
823 readl(phba->HCregaddr); /* flush */
824 spin_unlock_irq(&phba->hbalock);
825
826 return;
827 }
828
829
830 static void
831 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
832 {
833 struct lpfc_vport *vport = pmb->vport;
834
835 if (pmb->mb.mbxStatus)
836 goto out;
837
838 mempool_free(pmb, phba->mbox_mem_pool);
839
840 if (phba->fc_topology == TOPOLOGY_LOOP &&
841 vport->fc_flag & FC_PUBLIC_LOOP &&
842 !(vport->fc_flag & FC_LBIT)) {
843 /* Need to wait for FAN - use discovery timer
844 * for timeout. port_state is identically
845 * LPFC_LOCAL_CFG_LINK while waiting for FAN
846 */
847 lpfc_set_disctmo(vport);
848 return;
849 }
850
851 /* Start discovery by sending a FLOGI. port_state is identically
852 * LPFC_FLOGI while waiting for FLOGI cmpl
853 */
854 if (vport->port_state != LPFC_FLOGI) {
855 vport->port_state = LPFC_FLOGI;
856 lpfc_set_disctmo(vport);
857 lpfc_initial_flogi(vport);
858 }
859 return;
860
861 out:
862 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
863 "0306 CONFIG_LINK mbxStatus error x%x "
864 "HBA state x%x\n",
865 pmb->mb.mbxStatus, vport->port_state);
866 mempool_free(pmb, phba->mbox_mem_pool);
867
868 lpfc_linkdown(phba);
869
870 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
871 "0200 CONFIG_LINK bad hba state x%x\n",
872 vport->port_state);
873
874 lpfc_issue_clear_la(phba, vport);
875 return;
876 }
877
878 static void
879 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
880 {
881 MAILBOX_t *mb = &pmb->mb;
882 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
883 struct lpfc_vport *vport = pmb->vport;
884
885
886 /* Check for error */
887 if (mb->mbxStatus) {
888 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
889 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
890 "0319 READ_SPARAM mbxStatus error x%x "
891 "hba state x%x>\n",
892 mb->mbxStatus, vport->port_state);
893 lpfc_linkdown(phba);
894 goto out;
895 }
896
897 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
898 sizeof (struct serv_parm));
899 if (phba->cfg_soft_wwnn)
900 u64_to_wwn(phba->cfg_soft_wwnn,
901 vport->fc_sparam.nodeName.u.wwn);
902 if (phba->cfg_soft_wwpn)
903 u64_to_wwn(phba->cfg_soft_wwpn,
904 vport->fc_sparam.portName.u.wwn);
905 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
906 sizeof(vport->fc_nodename));
907 memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
908 sizeof(vport->fc_portname));
909 if (vport->port_type == LPFC_PHYSICAL_PORT) {
910 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
911 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
912 }
913
914 lpfc_mbuf_free(phba, mp->virt, mp->phys);
915 kfree(mp);
916 mempool_free(pmb, phba->mbox_mem_pool);
917 return;
918
919 out:
920 pmb->context1 = NULL;
921 lpfc_mbuf_free(phba, mp->virt, mp->phys);
922 kfree(mp);
923 lpfc_issue_clear_la(phba, vport);
924 mempool_free(pmb, phba->mbox_mem_pool);
925 return;
926 }
927
928 static void
929 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
930 {
931 struct lpfc_vport *vport = phba->pport;
932 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox;
933 int i;
934 struct lpfc_dmabuf *mp;
935 int rc;
936
937 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
938 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
939
940 spin_lock_irq(&phba->hbalock);
941 switch (la->UlnkSpeed) {
942 case LA_1GHZ_LINK:
943 phba->fc_linkspeed = LA_1GHZ_LINK;
944 break;
945 case LA_2GHZ_LINK:
946 phba->fc_linkspeed = LA_2GHZ_LINK;
947 break;
948 case LA_4GHZ_LINK:
949 phba->fc_linkspeed = LA_4GHZ_LINK;
950 break;
951 case LA_8GHZ_LINK:
952 phba->fc_linkspeed = LA_8GHZ_LINK;
953 break;
954 default:
955 phba->fc_linkspeed = LA_UNKNW_LINK;
956 break;
957 }
958
959 phba->fc_topology = la->topology;
960 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
961
962 if (phba->fc_topology == TOPOLOGY_LOOP) {
963 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
964
965 /* Get Loop Map information */
966 if (la->il)
967 vport->fc_flag |= FC_LBIT;
968
969 vport->fc_myDID = la->granted_AL_PA;
970 i = la->un.lilpBde64.tus.f.bdeSize;
971
972 if (i == 0) {
973 phba->alpa_map[0] = 0;
974 } else {
975 if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
976 int numalpa, j, k;
977 union {
978 uint8_t pamap[16];
979 struct {
980 uint32_t wd1;
981 uint32_t wd2;
982 uint32_t wd3;
983 uint32_t wd4;
984 } pa;
985 } un;
986 numalpa = phba->alpa_map[0];
987 j = 0;
988 while (j < numalpa) {
989 memset(un.pamap, 0, 16);
990 for (k = 1; j < numalpa; k++) {
991 un.pamap[k - 1] =
992 phba->alpa_map[j + 1];
993 j++;
994 if (k == 16)
995 break;
996 }
997 /* Link Up Event ALPA map */
998 lpfc_printf_log(phba,
999 KERN_WARNING,
1000 LOG_LINK_EVENT,
1001 "1304 Link Up Event "
1002 "ALPA map Data: x%x "
1003 "x%x x%x x%x\n",
1004 un.pa.wd1, un.pa.wd2,
1005 un.pa.wd3, un.pa.wd4);
1006 }
1007 }
1008 }
1009 } else {
1010 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
1011 if (phba->max_vpi && phba->cfg_enable_npiv &&
1012 (phba->sli_rev == 3))
1013 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
1014 }
1015 vport->fc_myDID = phba->fc_pref_DID;
1016 vport->fc_flag |= FC_LBIT;
1017 }
1018 spin_unlock_irq(&phba->hbalock);
1019
1020 lpfc_linkup(phba);
1021 if (sparam_mbox) {
1022 lpfc_read_sparam(phba, sparam_mbox, 0);
1023 sparam_mbox->vport = vport;
1024 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1025 rc = lpfc_sli_issue_mbox(phba, sparam_mbox,
1026 (MBX_NOWAIT | MBX_STOP_IOCB));
1027 if (rc == MBX_NOT_FINISHED) {
1028 mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
1029 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1030 kfree(mp);
1031 mempool_free(sparam_mbox, phba->mbox_mem_pool);
1032 if (cfglink_mbox)
1033 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1034 goto out;
1035 }
1036 }
1037
1038 if (cfglink_mbox) {
1039 vport->port_state = LPFC_LOCAL_CFG_LINK;
1040 lpfc_config_link(phba, cfglink_mbox);
1041 cfglink_mbox->vport = vport;
1042 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
1043 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox,
1044 (MBX_NOWAIT | MBX_STOP_IOCB));
1045 if (rc != MBX_NOT_FINISHED)
1046 return;
1047 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1048 }
1049 out:
1050 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1051 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1052 "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
1053 vport->port_state, sparam_mbox, cfglink_mbox);
1054 lpfc_issue_clear_la(phba, vport);
1055 return;
1056 }
1057
1058 static void
1059 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
1060 {
1061 uint32_t control;
1062 struct lpfc_sli *psli = &phba->sli;
1063
1064 lpfc_linkdown(phba);
1065
1066 /* turn on Link Attention interrupts - no CLEAR_LA needed */
1067 spin_lock_irq(&phba->hbalock);
1068 psli->sli_flag |= LPFC_PROCESS_LA;
1069 control = readl(phba->HCregaddr);
1070 control |= HC_LAINT_ENA;
1071 writel(control, phba->HCregaddr);
1072 readl(phba->HCregaddr); /* flush */
1073 spin_unlock_irq(&phba->hbalock);
1074 }
1075
1076 /*
1077 * This routine handles processing a READ_LA mailbox
1078 * command upon completion. It is setup in the LPFC_MBOXQ
1079 * as the completion routine when the command is
1080 * handed off to the SLI layer.
1081 */
1082 void
1083 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1084 {
1085 struct lpfc_vport *vport = pmb->vport;
1086 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1087 READ_LA_VAR *la;
1088 MAILBOX_t *mb = &pmb->mb;
1089 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1090
1091 /* Check for error */
1092 if (mb->mbxStatus) {
1093 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1094 "1307 READ_LA mbox error x%x state x%x\n",
1095 mb->mbxStatus, vport->port_state);
1096 lpfc_mbx_issue_link_down(phba);
1097 phba->link_state = LPFC_HBA_ERROR;
1098 goto lpfc_mbx_cmpl_read_la_free_mbuf;
1099 }
1100
1101 la = (READ_LA_VAR *) & pmb->mb.un.varReadLA;
1102
1103 memcpy(&phba->alpa_map[0], mp->virt, 128);
1104
1105 spin_lock_irq(shost->host_lock);
1106 if (la->pb)
1107 vport->fc_flag |= FC_BYPASSED_MODE;
1108 else
1109 vport->fc_flag &= ~FC_BYPASSED_MODE;
1110 spin_unlock_irq(shost->host_lock);
1111
1112 if (((phba->fc_eventTag + 1) < la->eventTag) ||
1113 (phba->fc_eventTag == la->eventTag)) {
1114 phba->fc_stat.LinkMultiEvent++;
1115 if (la->attType == AT_LINK_UP)
1116 if (phba->fc_eventTag != 0)
1117 lpfc_linkdown(phba);
1118 }
1119
1120 phba->fc_eventTag = la->eventTag;
1121
1122 if (la->attType == AT_LINK_UP) {
1123 phba->fc_stat.LinkUp++;
1124 if (phba->link_flag & LS_LOOPBACK_MODE) {
1125 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1126 "1306 Link Up Event in loop back mode "
1127 "x%x received Data: x%x x%x x%x x%x\n",
1128 la->eventTag, phba->fc_eventTag,
1129 la->granted_AL_PA, la->UlnkSpeed,
1130 phba->alpa_map[0]);
1131 } else {
1132 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1133 "1303 Link Up Event x%x received "
1134 "Data: x%x x%x x%x x%x\n",
1135 la->eventTag, phba->fc_eventTag,
1136 la->granted_AL_PA, la->UlnkSpeed,
1137 phba->alpa_map[0]);
1138 }
1139 lpfc_mbx_process_link_up(phba, la);
1140 } else {
1141 phba->fc_stat.LinkDown++;
1142 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1143 "1305 Link Down Event x%x received "
1144 "Data: x%x x%x x%x\n",
1145 la->eventTag, phba->fc_eventTag,
1146 phba->pport->port_state, vport->fc_flag);
1147 lpfc_mbx_issue_link_down(phba);
1148 }
1149
1150 lpfc_mbx_cmpl_read_la_free_mbuf:
1151 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1152 kfree(mp);
1153 mempool_free(pmb, phba->mbox_mem_pool);
1154 return;
1155 }
1156
1157 /*
1158 * This routine handles processing a REG_LOGIN mailbox
1159 * command upon completion. It is setup in the LPFC_MBOXQ
1160 * as the completion routine when the command is
1161 * handed off to the SLI layer.
1162 */
1163 void
1164 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1165 {
1166 struct lpfc_vport *vport = pmb->vport;
1167 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1168 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1169
1170 pmb->context1 = NULL;
1171
1172 /* Good status, call state machine */
1173 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
1174 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1175 kfree(mp);
1176 mempool_free(pmb, phba->mbox_mem_pool);
1177 lpfc_nlp_put(ndlp);
1178
1179 return;
1180 }
1181
1182 static void
1183 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1184 {
1185 MAILBOX_t *mb = &pmb->mb;
1186 struct lpfc_vport *vport = pmb->vport;
1187 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1188
1189 switch (mb->mbxStatus) {
1190 case 0x0011:
1191 case 0x0020:
1192 case 0x9700:
1193 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1194 "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
1195 mb->mbxStatus);
1196 break;
1197 }
1198 vport->unreg_vpi_cmpl = VPORT_OK;
1199 mempool_free(pmb, phba->mbox_mem_pool);
1200 /*
1201 * This shost reference might have been taken at the beginning of
1202 * lpfc_vport_delete()
1203 */
1204 if (vport->load_flag & FC_UNLOADING)
1205 scsi_host_put(shost);
1206 }
1207
1208 void
1209 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
1210 {
1211 struct lpfc_hba *phba = vport->phba;
1212 LPFC_MBOXQ_t *mbox;
1213 int rc;
1214
1215 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1216 if (!mbox)
1217 return;
1218
1219 lpfc_unreg_vpi(phba, vport->vpi, mbox);
1220 mbox->vport = vport;
1221 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
1222 rc = lpfc_sli_issue_mbox(phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB));
1223 if (rc == MBX_NOT_FINISHED) {
1224 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
1225 "1800 Could not issue unreg_vpi\n");
1226 mempool_free(mbox, phba->mbox_mem_pool);
1227 vport->unreg_vpi_cmpl = VPORT_ERROR;
1228 }
1229 }
1230
1231 static void
1232 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1233 {
1234 struct lpfc_vport *vport = pmb->vport;
1235 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1236 MAILBOX_t *mb = &pmb->mb;
1237
1238 switch (mb->mbxStatus) {
1239 case 0x0011:
1240 case 0x9601:
1241 case 0x9602:
1242 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1243 "0912 cmpl_reg_vpi, mb status = 0x%x\n",
1244 mb->mbxStatus);
1245 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1246 spin_lock_irq(shost->host_lock);
1247 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1248 spin_unlock_irq(shost->host_lock);
1249 vport->fc_myDID = 0;
1250 goto out;
1251 }
1252
1253 vport->num_disc_nodes = 0;
1254 /* go thru NPR list and issue ELS PLOGIs */
1255 if (vport->fc_npr_cnt)
1256 lpfc_els_disc_plogi(vport);
1257
1258 if (!vport->num_disc_nodes) {
1259 spin_lock_irq(shost->host_lock);
1260 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1261 spin_unlock_irq(shost->host_lock);
1262 lpfc_can_disctmo(vport);
1263 }
1264 vport->port_state = LPFC_VPORT_READY;
1265
1266 out:
1267 mempool_free(pmb, phba->mbox_mem_pool);
1268 return;
1269 }
1270
1271 /*
1272 * This routine handles processing a Fabric REG_LOGIN mailbox
1273 * command upon completion. It is setup in the LPFC_MBOXQ
1274 * as the completion routine when the command is
1275 * handed off to the SLI layer.
1276 */
1277 void
1278 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1279 {
1280 struct lpfc_vport *vport = pmb->vport;
1281 MAILBOX_t *mb = &pmb->mb;
1282 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1283 struct lpfc_nodelist *ndlp;
1284 struct lpfc_vport **vports;
1285 int i;
1286
1287 ndlp = (struct lpfc_nodelist *) pmb->context2;
1288 pmb->context1 = NULL;
1289 pmb->context2 = NULL;
1290 if (mb->mbxStatus) {
1291 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1292 kfree(mp);
1293 mempool_free(pmb, phba->mbox_mem_pool);
1294 lpfc_nlp_put(ndlp);
1295
1296 if (phba->fc_topology == TOPOLOGY_LOOP) {
1297 /* FLOGI failed, use loop map to make discovery list */
1298 lpfc_disc_list_loopmap(vport);
1299
1300 /* Start discovery */
1301 lpfc_disc_start(vport);
1302 return;
1303 }
1304
1305 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1306 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1307 "0258 Register Fabric login error: 0x%x\n",
1308 mb->mbxStatus);
1309 return;
1310 }
1311
1312 ndlp->nlp_rpi = mb->un.varWords[0];
1313 ndlp->nlp_type |= NLP_FABRIC;
1314 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1315
1316 lpfc_nlp_put(ndlp); /* Drop the reference from the mbox */
1317
1318 if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
1319 vports = lpfc_create_vport_work_array(phba);
1320 if (vports != NULL)
1321 for(i = 0;
1322 i < LPFC_MAX_VPORTS && vports[i] != NULL;
1323 i++) {
1324 if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
1325 continue;
1326 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1327 lpfc_initial_fdisc(vports[i]);
1328 else if (phba->sli3_options &
1329 LPFC_SLI3_NPIV_ENABLED) {
1330 lpfc_vport_set_state(vports[i],
1331 FC_VPORT_NO_FABRIC_SUPP);
1332 lpfc_printf_vlog(vport, KERN_ERR,
1333 LOG_ELS,
1334 "0259 No NPIV "
1335 "Fabric support\n");
1336 }
1337 }
1338 lpfc_destroy_vport_work_array(vports);
1339 lpfc_do_scr_ns_plogi(phba, vport);
1340 }
1341
1342 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1343 kfree(mp);
1344 mempool_free(pmb, phba->mbox_mem_pool);
1345 return;
1346 }
1347
1348 /*
1349 * This routine handles processing a NameServer REG_LOGIN mailbox
1350 * command upon completion. It is setup in the LPFC_MBOXQ
1351 * as the completion routine when the command is
1352 * handed off to the SLI layer.
1353 */
1354 void
1355 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1356 {
1357 MAILBOX_t *mb = &pmb->mb;
1358 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1359 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1360 struct lpfc_vport *vport = pmb->vport;
1361
1362 if (mb->mbxStatus) {
1363 out:
1364 lpfc_nlp_put(ndlp);
1365 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1366 kfree(mp);
1367 mempool_free(pmb, phba->mbox_mem_pool);
1368 lpfc_drop_node(vport, ndlp);
1369
1370 if (phba->fc_topology == TOPOLOGY_LOOP) {
1371 /*
1372 * RegLogin failed, use loop map to make discovery
1373 * list
1374 */
1375 lpfc_disc_list_loopmap(vport);
1376
1377 /* Start discovery */
1378 lpfc_disc_start(vport);
1379 return;
1380 }
1381 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1382 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1383 "0260 Register NameServer error: 0x%x\n",
1384 mb->mbxStatus);
1385 return;
1386 }
1387
1388 pmb->context1 = NULL;
1389
1390 ndlp->nlp_rpi = mb->un.varWords[0];
1391 ndlp->nlp_type |= NLP_FABRIC;
1392 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1393
1394 if (vport->port_state < LPFC_VPORT_READY) {
1395 /* Link up discovery requires Fabric registration. */
1396 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
1397 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
1398 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
1399 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
1400 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
1401
1402 /* Issue SCR just before NameServer GID_FT Query */
1403 lpfc_issue_els_scr(vport, SCR_DID, 0);
1404 }
1405
1406 vport->fc_ns_retry = 0;
1407 /* Good status, issue CT Request to NameServer */
1408 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
1409 /* Cannot issue NameServer Query, so finish up discovery */
1410 goto out;
1411 }
1412
1413 lpfc_nlp_put(ndlp);
1414 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1415 kfree(mp);
1416 mempool_free(pmb, phba->mbox_mem_pool);
1417
1418 return;
1419 }
1420
1421 static void
1422 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1423 {
1424 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1425 struct fc_rport *rport;
1426 struct lpfc_rport_data *rdata;
1427 struct fc_rport_identifiers rport_ids;
1428 struct lpfc_hba *phba = vport->phba;
1429
1430 /* Remote port has reappeared. Re-register w/ FC transport */
1431 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
1432 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
1433 rport_ids.port_id = ndlp->nlp_DID;
1434 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1435
1436 /*
1437 * We leave our node pointer in rport->dd_data when we unregister a
1438 * FCP target port. But fc_remote_port_add zeros the space to which
1439 * rport->dd_data points. So, if we're reusing a previously
1440 * registered port, drop the reference that we took the last time we
1441 * registered the port.
1442 */
1443 if (ndlp->rport && ndlp->rport->dd_data &&
1444 ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp) {
1445 lpfc_nlp_put(ndlp);
1446 }
1447
1448 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
1449 "rport add: did:x%x flg:x%x type x%x",
1450 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1451
1452 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
1453 if (!rport || !get_device(&rport->dev)) {
1454 dev_printk(KERN_WARNING, &phba->pcidev->dev,
1455 "Warning: fc_remote_port_add failed\n");
1456 return;
1457 }
1458
1459 /* initialize static port data */
1460 rport->maxframe_size = ndlp->nlp_maxframe;
1461 rport->supported_classes = ndlp->nlp_class_sup;
1462 rdata = rport->dd_data;
1463 rdata->pnode = lpfc_nlp_get(ndlp);
1464
1465 if (ndlp->nlp_type & NLP_FCP_TARGET)
1466 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1467 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
1468 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
1469
1470
1471 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1472 fc_remote_port_rolechg(rport, rport_ids.roles);
1473
1474 if ((rport->scsi_target_id != -1) &&
1475 (rport->scsi_target_id < LPFC_MAX_TARGET)) {
1476 ndlp->nlp_sid = rport->scsi_target_id;
1477 }
1478 return;
1479 }
1480
1481 static void
1482 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
1483 {
1484 struct fc_rport *rport = ndlp->rport;
1485
1486 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
1487 "rport delete: did:x%x flg:x%x type x%x",
1488 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1489
1490 fc_remote_port_delete(rport);
1491
1492 return;
1493 }
1494
1495 static void
1496 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
1497 {
1498 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1499
1500 spin_lock_irq(shost->host_lock);
1501 switch (state) {
1502 case NLP_STE_UNUSED_NODE:
1503 vport->fc_unused_cnt += count;
1504 break;
1505 case NLP_STE_PLOGI_ISSUE:
1506 vport->fc_plogi_cnt += count;
1507 break;
1508 case NLP_STE_ADISC_ISSUE:
1509 vport->fc_adisc_cnt += count;
1510 break;
1511 case NLP_STE_REG_LOGIN_ISSUE:
1512 vport->fc_reglogin_cnt += count;
1513 break;
1514 case NLP_STE_PRLI_ISSUE:
1515 vport->fc_prli_cnt += count;
1516 break;
1517 case NLP_STE_UNMAPPED_NODE:
1518 vport->fc_unmap_cnt += count;
1519 break;
1520 case NLP_STE_MAPPED_NODE:
1521 vport->fc_map_cnt += count;
1522 break;
1523 case NLP_STE_NPR_NODE:
1524 vport->fc_npr_cnt += count;
1525 break;
1526 }
1527 spin_unlock_irq(shost->host_lock);
1528 }
1529
1530 static void
1531 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1532 int old_state, int new_state)
1533 {
1534 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1535
1536 if (new_state == NLP_STE_UNMAPPED_NODE) {
1537 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1538 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1539 ndlp->nlp_type |= NLP_FC_NODE;
1540 }
1541 if (new_state == NLP_STE_MAPPED_NODE)
1542 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1543 if (new_state == NLP_STE_NPR_NODE)
1544 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
1545
1546 /* Transport interface */
1547 if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
1548 old_state == NLP_STE_UNMAPPED_NODE)) {
1549 vport->phba->nport_event_cnt++;
1550 lpfc_unregister_remote_port(ndlp);
1551 }
1552
1553 if (new_state == NLP_STE_MAPPED_NODE ||
1554 new_state == NLP_STE_UNMAPPED_NODE) {
1555 vport->phba->nport_event_cnt++;
1556 /*
1557 * Tell the fc transport about the port, if we haven't
1558 * already. If we have, and it's a scsi entity, be
1559 * sure to unblock any attached scsi devices
1560 */
1561 lpfc_register_remote_port(vport, ndlp);
1562 }
1563 /*
1564 * if we added to Mapped list, but the remote port
1565 * registration failed or assigned a target id outside
1566 * our presentable range - move the node to the
1567 * Unmapped List
1568 */
1569 if (new_state == NLP_STE_MAPPED_NODE &&
1570 (!ndlp->rport ||
1571 ndlp->rport->scsi_target_id == -1 ||
1572 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
1573 spin_lock_irq(shost->host_lock);
1574 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
1575 spin_unlock_irq(shost->host_lock);
1576 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1577 }
1578 }
1579
1580 static char *
1581 lpfc_nlp_state_name(char *buffer, size_t size, int state)
1582 {
1583 static char *states[] = {
1584 [NLP_STE_UNUSED_NODE] = "UNUSED",
1585 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
1586 [NLP_STE_ADISC_ISSUE] = "ADISC",
1587 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
1588 [NLP_STE_PRLI_ISSUE] = "PRLI",
1589 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
1590 [NLP_STE_MAPPED_NODE] = "MAPPED",
1591 [NLP_STE_NPR_NODE] = "NPR",
1592 };
1593
1594 if (state < NLP_STE_MAX_STATE && states[state])
1595 strlcpy(buffer, states[state], size);
1596 else
1597 snprintf(buffer, size, "unknown (%d)", state);
1598 return buffer;
1599 }
1600
1601 void
1602 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1603 int state)
1604 {
1605 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1606 int old_state = ndlp->nlp_state;
1607 char name1[16], name2[16];
1608
1609 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1610 "0904 NPort state transition x%06x, %s -> %s\n",
1611 ndlp->nlp_DID,
1612 lpfc_nlp_state_name(name1, sizeof(name1), old_state),
1613 lpfc_nlp_state_name(name2, sizeof(name2), state));
1614
1615 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1616 "node statechg did:x%x old:%d ste:%d",
1617 ndlp->nlp_DID, old_state, state);
1618
1619 if (old_state == NLP_STE_NPR_NODE &&
1620 (ndlp->nlp_flag & NLP_DELAY_TMO) != 0 &&
1621 state != NLP_STE_NPR_NODE)
1622 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1623 if (old_state == NLP_STE_UNMAPPED_NODE) {
1624 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
1625 ndlp->nlp_type &= ~NLP_FC_NODE;
1626 }
1627
1628 if (list_empty(&ndlp->nlp_listp)) {
1629 spin_lock_irq(shost->host_lock);
1630 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1631 spin_unlock_irq(shost->host_lock);
1632 } else if (old_state)
1633 lpfc_nlp_counters(vport, old_state, -1);
1634
1635 ndlp->nlp_state = state;
1636 lpfc_nlp_counters(vport, state, 1);
1637 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
1638 }
1639
1640 void
1641 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1642 {
1643 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1644
1645 if ((ndlp->nlp_flag & NLP_DELAY_TMO) != 0)
1646 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1647 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1648 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1649 spin_lock_irq(shost->host_lock);
1650 list_del_init(&ndlp->nlp_listp);
1651 spin_unlock_irq(shost->host_lock);
1652 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
1653 NLP_STE_UNUSED_NODE);
1654 }
1655
1656 void
1657 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1658 {
1659 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
1660 lpfc_nlp_put(ndlp);
1661 }
1662
1663 /*
1664 * Start / ReStart rescue timer for Discovery / RSCN handling
1665 */
1666 void
1667 lpfc_set_disctmo(struct lpfc_vport *vport)
1668 {
1669 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1670 struct lpfc_hba *phba = vport->phba;
1671 uint32_t tmo;
1672
1673 if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
1674 /* For FAN, timeout should be greater then edtov */
1675 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
1676 } else {
1677 /* Normal discovery timeout should be > then ELS/CT timeout
1678 * FC spec states we need 3 * ratov for CT requests
1679 */
1680 tmo = ((phba->fc_ratov * 3) + 3);
1681 }
1682
1683
1684 if (!timer_pending(&vport->fc_disctmo)) {
1685 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1686 "set disc timer: tmo:x%x state:x%x flg:x%x",
1687 tmo, vport->port_state, vport->fc_flag);
1688 }
1689
1690 mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
1691 spin_lock_irq(shost->host_lock);
1692 vport->fc_flag |= FC_DISC_TMO;
1693 spin_unlock_irq(shost->host_lock);
1694
1695 /* Start Discovery Timer state <hba_state> */
1696 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1697 "0247 Start Discovery Timer state x%x "
1698 "Data: x%x x%lx x%x x%x\n",
1699 vport->port_state, tmo,
1700 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
1701 vport->fc_adisc_cnt);
1702
1703 return;
1704 }
1705
1706 /*
1707 * Cancel rescue timer for Discovery / RSCN handling
1708 */
1709 int
1710 lpfc_can_disctmo(struct lpfc_vport *vport)
1711 {
1712 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1713 unsigned long iflags;
1714
1715 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1716 "can disc timer: state:x%x rtry:x%x flg:x%x",
1717 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1718
1719 /* Turn off discovery timer if its running */
1720 if (vport->fc_flag & FC_DISC_TMO) {
1721 spin_lock_irqsave(shost->host_lock, iflags);
1722 vport->fc_flag &= ~FC_DISC_TMO;
1723 spin_unlock_irqrestore(shost->host_lock, iflags);
1724 del_timer_sync(&vport->fc_disctmo);
1725 spin_lock_irqsave(&vport->work_port_lock, iflags);
1726 vport->work_port_events &= ~WORKER_DISC_TMO;
1727 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
1728 }
1729
1730 /* Cancel Discovery Timer state <hba_state> */
1731 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1732 "0248 Cancel Discovery Timer state x%x "
1733 "Data: x%x x%x x%x\n",
1734 vport->port_state, vport->fc_flag,
1735 vport->fc_plogi_cnt, vport->fc_adisc_cnt);
1736 return 0;
1737 }
1738
1739 /*
1740 * Check specified ring for outstanding IOCB on the SLI queue
1741 * Return true if iocb matches the specified nport
1742 */
1743 int
1744 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
1745 struct lpfc_sli_ring *pring,
1746 struct lpfc_iocbq *iocb,
1747 struct lpfc_nodelist *ndlp)
1748 {
1749 struct lpfc_sli *psli = &phba->sli;
1750 IOCB_t *icmd = &iocb->iocb;
1751 struct lpfc_vport *vport = ndlp->vport;
1752
1753 if (iocb->vport != vport)
1754 return 0;
1755
1756 if (pring->ringno == LPFC_ELS_RING) {
1757 switch (icmd->ulpCommand) {
1758 case CMD_GEN_REQUEST64_CR:
1759 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi)
1760 return 1;
1761 case CMD_ELS_REQUEST64_CR:
1762 if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
1763 return 1;
1764 case CMD_XMIT_ELS_RSP64_CX:
1765 if (iocb->context1 == (uint8_t *) ndlp)
1766 return 1;
1767 }
1768 } else if (pring->ringno == psli->extra_ring) {
1769
1770 } else if (pring->ringno == psli->fcp_ring) {
1771 /* Skip match check if waiting to relogin to FCP target */
1772 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
1773 (ndlp->nlp_flag & NLP_DELAY_TMO)) {
1774 return 0;
1775 }
1776 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
1777 return 1;
1778 }
1779 } else if (pring->ringno == psli->next_ring) {
1780
1781 }
1782 return 0;
1783 }
1784
1785 /*
1786 * Free resources / clean up outstanding I/Os
1787 * associated with nlp_rpi in the LPFC_NODELIST entry.
1788 */
1789 static int
1790 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
1791 {
1792 LIST_HEAD(completions);
1793 struct lpfc_sli *psli;
1794 struct lpfc_sli_ring *pring;
1795 struct lpfc_iocbq *iocb, *next_iocb;
1796 IOCB_t *icmd;
1797 uint32_t rpi, i;
1798
1799 lpfc_fabric_abort_nport(ndlp);
1800
1801 /*
1802 * Everything that matches on txcmplq will be returned
1803 * by firmware with a no rpi error.
1804 */
1805 psli = &phba->sli;
1806 rpi = ndlp->nlp_rpi;
1807 if (rpi) {
1808 /* Now process each ring */
1809 for (i = 0; i < psli->num_rings; i++) {
1810 pring = &psli->ring[i];
1811
1812 spin_lock_irq(&phba->hbalock);
1813 list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
1814 list) {
1815 /*
1816 * Check to see if iocb matches the nport we are
1817 * looking for
1818 */
1819 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
1820 ndlp))) {
1821 /* It matches, so deque and call compl
1822 with an error */
1823 list_move_tail(&iocb->list,
1824 &completions);
1825 pring->txq_cnt--;
1826 }
1827 }
1828 spin_unlock_irq(&phba->hbalock);
1829 }
1830 }
1831
1832 while (!list_empty(&completions)) {
1833 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
1834 list_del_init(&iocb->list);
1835
1836 if (!iocb->iocb_cmpl)
1837 lpfc_sli_release_iocbq(phba, iocb);
1838 else {
1839 icmd = &iocb->iocb;
1840 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1841 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1842 (iocb->iocb_cmpl)(phba, iocb, iocb);
1843 }
1844 }
1845
1846 return 0;
1847 }
1848
1849 /*
1850 * Free rpi associated with LPFC_NODELIST entry.
1851 * This routine is called from lpfc_freenode(), when we are removing
1852 * a LPFC_NODELIST entry. It is also called if the driver initiates a
1853 * LOGO that completes successfully, and we are waiting to PLOGI back
1854 * to the remote NPort. In addition, it is called after we receive
1855 * and unsolicated ELS cmd, send back a rsp, the rsp completes and
1856 * we are waiting to PLOGI back to the remote NPort.
1857 */
1858 int
1859 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1860 {
1861 struct lpfc_hba *phba = vport->phba;
1862 LPFC_MBOXQ_t *mbox;
1863 int rc;
1864
1865 if (ndlp->nlp_rpi) {
1866 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1867 if (mbox) {
1868 lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
1869 mbox->vport = vport;
1870 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1871 rc = lpfc_sli_issue_mbox(phba, mbox,
1872 (MBX_NOWAIT | MBX_STOP_IOCB));
1873 if (rc == MBX_NOT_FINISHED)
1874 mempool_free(mbox, phba->mbox_mem_pool);
1875 }
1876 lpfc_no_rpi(phba, ndlp);
1877 ndlp->nlp_rpi = 0;
1878 return 1;
1879 }
1880 return 0;
1881 }
1882
1883 void
1884 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
1885 {
1886 struct lpfc_hba *phba = vport->phba;
1887 LPFC_MBOXQ_t *mbox;
1888 int rc;
1889
1890 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1891 if (mbox) {
1892 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
1893 mbox->vport = vport;
1894 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1895 rc = lpfc_sli_issue_mbox(phba, mbox,
1896 (MBX_NOWAIT | MBX_STOP_IOCB));
1897 if (rc == MBX_NOT_FINISHED) {
1898 mempool_free(mbox, phba->mbox_mem_pool);
1899 }
1900 }
1901 }
1902
1903 void
1904 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
1905 {
1906 struct lpfc_hba *phba = vport->phba;
1907 LPFC_MBOXQ_t *mbox;
1908 int rc;
1909
1910 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1911 if (mbox) {
1912 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
1913 mbox->vport = vport;
1914 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1915 rc = lpfc_sli_issue_mbox(phba, mbox,
1916 (MBX_NOWAIT | MBX_STOP_IOCB));
1917 if (rc == MBX_NOT_FINISHED) {
1918 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
1919 "1815 Could not issue "
1920 "unreg_did (default rpis)\n");
1921 mempool_free(mbox, phba->mbox_mem_pool);
1922 }
1923 }
1924 }
1925
1926 /*
1927 * Free resources associated with LPFC_NODELIST entry
1928 * so it can be freed.
1929 */
1930 static int
1931 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1932 {
1933 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1934 struct lpfc_hba *phba = vport->phba;
1935 LPFC_MBOXQ_t *mb, *nextmb;
1936 struct lpfc_dmabuf *mp;
1937
1938 /* Cleanup node for NPort <nlp_DID> */
1939 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1940 "0900 Cleanup node for NPort x%x "
1941 "Data: x%x x%x x%x\n",
1942 ndlp->nlp_DID, ndlp->nlp_flag,
1943 ndlp->nlp_state, ndlp->nlp_rpi);
1944 lpfc_dequeue_node(vport, ndlp);
1945
1946 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1947 if ((mb = phba->sli.mbox_active)) {
1948 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1949 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1950 mb->context2 = NULL;
1951 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1952 }
1953 }
1954
1955 spin_lock_irq(&phba->hbalock);
1956 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1957 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1958 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1959 mp = (struct lpfc_dmabuf *) (mb->context1);
1960 if (mp) {
1961 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1962 kfree(mp);
1963 }
1964 list_del(&mb->list);
1965 mempool_free(mb, phba->mbox_mem_pool);
1966 lpfc_nlp_put(ndlp);
1967 }
1968 }
1969 spin_unlock_irq(&phba->hbalock);
1970
1971 lpfc_els_abort(phba,ndlp);
1972 spin_lock_irq(shost->host_lock);
1973 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
1974 spin_unlock_irq(shost->host_lock);
1975
1976 ndlp->nlp_last_elscmd = 0;
1977 del_timer_sync(&ndlp->nlp_delayfunc);
1978
1979 if (!list_empty(&ndlp->els_retry_evt.evt_listp))
1980 list_del_init(&ndlp->els_retry_evt.evt_listp);
1981 if (!list_empty(&ndlp->dev_loss_evt.evt_listp))
1982 list_del_init(&ndlp->dev_loss_evt.evt_listp);
1983
1984 if (!list_empty(&ndlp->dev_loss_evt.evt_listp)) {
1985 list_del_init(&ndlp->dev_loss_evt.evt_listp);
1986 complete((struct completion *)(ndlp->dev_loss_evt.evt_arg2));
1987 }
1988
1989 lpfc_unreg_rpi(vport, ndlp);
1990
1991 return 0;
1992 }
1993
1994 /*
1995 * Check to see if we can free the nlp back to the freelist.
1996 * If we are in the middle of using the nlp in the discovery state
1997 * machine, defer the free till we reach the end of the state machine.
1998 */
1999 static void
2000 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2001 {
2002 struct lpfc_rport_data *rdata;
2003
2004 if (ndlp->nlp_flag & NLP_DELAY_TMO) {
2005 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2006 }
2007
2008 lpfc_cleanup_node(vport, ndlp);
2009
2010 /*
2011 * We can get here with a non-NULL ndlp->rport because when we
2012 * unregister a rport we don't break the rport/node linkage. So if we
2013 * do, make sure we don't leaving any dangling pointers behind.
2014 */
2015 if (ndlp->rport) {
2016 rdata = ndlp->rport->dd_data;
2017 rdata->pnode = NULL;
2018 ndlp->rport = NULL;
2019 }
2020 }
2021
2022 static int
2023 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2024 uint32_t did)
2025 {
2026 D_ID mydid, ndlpdid, matchdid;
2027
2028 if (did == Bcast_DID)
2029 return 0;
2030
2031 if (ndlp->nlp_DID == 0) {
2032 return 0;
2033 }
2034
2035 /* First check for Direct match */
2036 if (ndlp->nlp_DID == did)
2037 return 1;
2038
2039 /* Next check for area/domain identically equals 0 match */
2040 mydid.un.word = vport->fc_myDID;
2041 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
2042 return 0;
2043 }
2044
2045 matchdid.un.word = did;
2046 ndlpdid.un.word = ndlp->nlp_DID;
2047 if (matchdid.un.b.id == ndlpdid.un.b.id) {
2048 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
2049 (mydid.un.b.area == matchdid.un.b.area)) {
2050 if ((ndlpdid.un.b.domain == 0) &&
2051 (ndlpdid.un.b.area == 0)) {
2052 if (ndlpdid.un.b.id)
2053 return 1;
2054 }
2055 return 0;
2056 }
2057
2058 matchdid.un.word = ndlp->nlp_DID;
2059 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
2060 (mydid.un.b.area == ndlpdid.un.b.area)) {
2061 if ((matchdid.un.b.domain == 0) &&
2062 (matchdid.un.b.area == 0)) {
2063 if (matchdid.un.b.id)
2064 return 1;
2065 }
2066 }
2067 }
2068 return 0;
2069 }
2070
2071 /* Search for a nodelist entry */
2072 static struct lpfc_nodelist *
2073 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2074 {
2075 struct lpfc_nodelist *ndlp;
2076 uint32_t data1;
2077
2078 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2079 if (lpfc_matchdid(vport, ndlp, did)) {
2080 data1 = (((uint32_t) ndlp->nlp_state << 24) |
2081 ((uint32_t) ndlp->nlp_xri << 16) |
2082 ((uint32_t) ndlp->nlp_type << 8) |
2083 ((uint32_t) ndlp->nlp_rpi & 0xff));
2084 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2085 "0929 FIND node DID "
2086 "Data: x%p x%x x%x x%x\n",
2087 ndlp, ndlp->nlp_DID,
2088 ndlp->nlp_flag, data1);
2089 return ndlp;
2090 }
2091 }
2092
2093 /* FIND node did <did> NOT FOUND */
2094 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2095 "0932 FIND node did x%x NOT FOUND.\n", did);
2096 return NULL;
2097 }
2098
2099 struct lpfc_nodelist *
2100 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2101 {
2102 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2103 struct lpfc_nodelist *ndlp;
2104
2105 spin_lock_irq(shost->host_lock);
2106 ndlp = __lpfc_findnode_did(vport, did);
2107 spin_unlock_irq(shost->host_lock);
2108 return ndlp;
2109 }
2110
2111 struct lpfc_nodelist *
2112 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
2113 {
2114 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2115 struct lpfc_nodelist *ndlp;
2116
2117 ndlp = lpfc_findnode_did(vport, did);
2118 if (!ndlp) {
2119 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
2120 lpfc_rscn_payload_check(vport, did) == 0)
2121 return NULL;
2122 ndlp = (struct lpfc_nodelist *)
2123 mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
2124 if (!ndlp)
2125 return NULL;
2126 lpfc_nlp_init(vport, ndlp, did);
2127 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2128 spin_lock_irq(shost->host_lock);
2129 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2130 spin_unlock_irq(shost->host_lock);
2131 return ndlp;
2132 }
2133 if (vport->fc_flag & FC_RSCN_MODE) {
2134 if (lpfc_rscn_payload_check(vport, did)) {
2135 spin_lock_irq(shost->host_lock);
2136 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2137 spin_unlock_irq(shost->host_lock);
2138
2139 /* Since this node is marked for discovery,
2140 * delay timeout is not needed.
2141 */
2142 if (ndlp->nlp_flag & NLP_DELAY_TMO)
2143 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2144 } else
2145 ndlp = NULL;
2146 } else {
2147 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
2148 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE)
2149 return NULL;
2150 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2151 spin_lock_irq(shost->host_lock);
2152 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2153 spin_unlock_irq(shost->host_lock);
2154 }
2155 return ndlp;
2156 }
2157
2158 /* Build a list of nodes to discover based on the loopmap */
2159 void
2160 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
2161 {
2162 struct lpfc_hba *phba = vport->phba;
2163 int j;
2164 uint32_t alpa, index;
2165
2166 if (!lpfc_is_link_up(phba))
2167 return;
2168
2169 if (phba->fc_topology != TOPOLOGY_LOOP)
2170 return;
2171
2172 /* Check for loop map present or not */
2173 if (phba->alpa_map[0]) {
2174 for (j = 1; j <= phba->alpa_map[0]; j++) {
2175 alpa = phba->alpa_map[j];
2176 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
2177 continue;
2178 lpfc_setup_disc_node(vport, alpa);
2179 }
2180 } else {
2181 /* No alpamap, so try all alpa's */
2182 for (j = 0; j < FC_MAXLOOP; j++) {
2183 /* If cfg_scan_down is set, start from highest
2184 * ALPA (0xef) to lowest (0x1).
2185 */
2186 if (vport->cfg_scan_down)
2187 index = j;
2188 else
2189 index = FC_MAXLOOP - j - 1;
2190 alpa = lpfcAlpaArray[index];
2191 if ((vport->fc_myDID & 0xff) == alpa)
2192 continue;
2193 lpfc_setup_disc_node(vport, alpa);
2194 }
2195 }
2196 return;
2197 }
2198
2199 void
2200 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
2201 {
2202 LPFC_MBOXQ_t *mbox;
2203 struct lpfc_sli *psli = &phba->sli;
2204 struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
2205 struct lpfc_sli_ring *fcp_ring = &psli->ring[psli->fcp_ring];
2206 struct lpfc_sli_ring *next_ring = &psli->ring[psli->next_ring];
2207 int rc;
2208
2209 /*
2210 * if it's not a physical port or if we already send
2211 * clear_la then don't send it.
2212 */
2213 if ((phba->link_state >= LPFC_CLEAR_LA) ||
2214 (vport->port_type != LPFC_PHYSICAL_PORT))
2215 return;
2216
2217 /* Link up discovery */
2218 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
2219 phba->link_state = LPFC_CLEAR_LA;
2220 lpfc_clear_la(phba, mbox);
2221 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
2222 mbox->vport = vport;
2223 rc = lpfc_sli_issue_mbox(phba, mbox, (MBX_NOWAIT |
2224 MBX_STOP_IOCB));
2225 if (rc == MBX_NOT_FINISHED) {
2226 mempool_free(mbox, phba->mbox_mem_pool);
2227 lpfc_disc_flush_list(vport);
2228 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2229 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2230 next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2231 phba->link_state = LPFC_HBA_ERROR;
2232 }
2233 }
2234 }
2235
2236 /* Reg_vpi to tell firmware to resume normal operations */
2237 void
2238 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
2239 {
2240 LPFC_MBOXQ_t *regvpimbox;
2241
2242 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2243 if (regvpimbox) {
2244 lpfc_reg_vpi(phba, vport->vpi, vport->fc_myDID, regvpimbox);
2245 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
2246 regvpimbox->vport = vport;
2247 if (lpfc_sli_issue_mbox(phba, regvpimbox,
2248 (MBX_NOWAIT | MBX_STOP_IOCB))
2249 == MBX_NOT_FINISHED) {
2250 mempool_free(regvpimbox, phba->mbox_mem_pool);
2251 }
2252 }
2253 }
2254
2255 /* Start Link up / RSCN discovery on NPR nodes */
2256 void
2257 lpfc_disc_start(struct lpfc_vport *vport)
2258 {
2259 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2260 struct lpfc_hba *phba = vport->phba;
2261 uint32_t num_sent;
2262 uint32_t clear_la_pending;
2263 int did_changed;
2264
2265 if (!lpfc_is_link_up(phba))
2266 return;
2267
2268 if (phba->link_state == LPFC_CLEAR_LA)
2269 clear_la_pending = 1;
2270 else
2271 clear_la_pending = 0;
2272
2273 if (vport->port_state < LPFC_VPORT_READY)
2274 vport->port_state = LPFC_DISC_AUTH;
2275
2276 lpfc_set_disctmo(vport);
2277
2278 if (vport->fc_prevDID == vport->fc_myDID)
2279 did_changed = 0;
2280 else
2281 did_changed = 1;
2282
2283 vport->fc_prevDID = vport->fc_myDID;
2284 vport->num_disc_nodes = 0;
2285
2286 /* Start Discovery state <hba_state> */
2287 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2288 "0202 Start Discovery hba state x%x "
2289 "Data: x%x x%x x%x\n",
2290 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
2291 vport->fc_adisc_cnt);
2292
2293 /* First do ADISCs - if any */
2294 num_sent = lpfc_els_disc_adisc(vport);
2295
2296 if (num_sent)
2297 return;
2298
2299 /*
2300 * For SLI3, cmpl_reg_vpi will set port_state to READY, and
2301 * continue discovery.
2302 */
2303 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2304 !(vport->fc_flag & FC_RSCN_MODE)) {
2305 lpfc_issue_reg_vpi(phba, vport);
2306 return;
2307 }
2308
2309 /*
2310 * For SLI2, we need to set port_state to READY and continue
2311 * discovery.
2312 */
2313 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
2314 /* If we get here, there is nothing to ADISC */
2315 if (vport->port_type == LPFC_PHYSICAL_PORT)
2316 lpfc_issue_clear_la(phba, vport);
2317
2318 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
2319 vport->num_disc_nodes = 0;
2320 /* go thru NPR nodes and issue ELS PLOGIs */
2321 if (vport->fc_npr_cnt)
2322 lpfc_els_disc_plogi(vport);
2323
2324 if (!vport->num_disc_nodes) {
2325 spin_lock_irq(shost->host_lock);
2326 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2327 spin_unlock_irq(shost->host_lock);
2328 lpfc_can_disctmo(vport);
2329 }
2330 }
2331 vport->port_state = LPFC_VPORT_READY;
2332 } else {
2333 /* Next do PLOGIs - if any */
2334 num_sent = lpfc_els_disc_plogi(vport);
2335
2336 if (num_sent)
2337 return;
2338
2339 if (vport->fc_flag & FC_RSCN_MODE) {
2340 /* Check to see if more RSCNs came in while we
2341 * were processing this one.
2342 */
2343 if ((vport->fc_rscn_id_cnt == 0) &&
2344 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
2345 spin_lock_irq(shost->host_lock);
2346 vport->fc_flag &= ~FC_RSCN_MODE;
2347 spin_unlock_irq(shost->host_lock);
2348 lpfc_can_disctmo(vport);
2349 } else
2350 lpfc_els_handle_rscn(vport);
2351 }
2352 }
2353 return;
2354 }
2355
2356 /*
2357 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS
2358 * ring the match the sppecified nodelist.
2359 */
2360 static void
2361 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
2362 {
2363 LIST_HEAD(completions);
2364 struct lpfc_sli *psli;
2365 IOCB_t *icmd;
2366 struct lpfc_iocbq *iocb, *next_iocb;
2367 struct lpfc_sli_ring *pring;
2368
2369 psli = &phba->sli;
2370 pring = &psli->ring[LPFC_ELS_RING];
2371
2372 /* Error matching iocb on txq or txcmplq
2373 * First check the txq.
2374 */
2375 spin_lock_irq(&phba->hbalock);
2376 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2377 if (iocb->context1 != ndlp) {
2378 continue;
2379 }
2380 icmd = &iocb->iocb;
2381 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
2382 (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
2383
2384 list_move_tail(&iocb->list, &completions);
2385 pring->txq_cnt--;
2386 }
2387 }
2388
2389 /* Next check the txcmplq */
2390 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
2391 if (iocb->context1 != ndlp) {
2392 continue;
2393 }
2394 icmd = &iocb->iocb;
2395 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
2396 icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
2397 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
2398 }
2399 }
2400 spin_unlock_irq(&phba->hbalock);
2401
2402 while (!list_empty(&completions)) {
2403 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
2404 list_del_init(&iocb->list);
2405
2406 if (!iocb->iocb_cmpl)
2407 lpfc_sli_release_iocbq(phba, iocb);
2408 else {
2409 icmd = &iocb->iocb;
2410 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2411 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
2412 (iocb->iocb_cmpl) (phba, iocb, iocb);
2413 }
2414 }
2415 }
2416
2417 void
2418 lpfc_disc_flush_list(struct lpfc_vport *vport)
2419 {
2420 struct lpfc_nodelist *ndlp, *next_ndlp;
2421 struct lpfc_hba *phba = vport->phba;
2422
2423 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
2424 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2425 nlp_listp) {
2426 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2427 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
2428 lpfc_free_tx(phba, ndlp);
2429 lpfc_nlp_put(ndlp);
2430 }
2431 }
2432 }
2433 }
2434
2435 void
2436 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
2437 {
2438 lpfc_els_flush_rscn(vport);
2439 lpfc_els_flush_cmd(vport);
2440 lpfc_disc_flush_list(vport);
2441 }
2442
2443 /*****************************************************************************/
2444 /*
2445 * NAME: lpfc_disc_timeout
2446 *
2447 * FUNCTION: Fibre Channel driver discovery timeout routine.
2448 *
2449 * EXECUTION ENVIRONMENT: interrupt only
2450 *
2451 * CALLED FROM:
2452 * Timer function
2453 *
2454 * RETURNS:
2455 * none
2456 */
2457 /*****************************************************************************/
2458 void
2459 lpfc_disc_timeout(unsigned long ptr)
2460 {
2461 struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
2462 struct lpfc_hba *phba = vport->phba;
2463 unsigned long flags = 0;
2464
2465 if (unlikely(!phba))
2466 return;
2467
2468 if ((vport->work_port_events & WORKER_DISC_TMO) == 0) {
2469 spin_lock_irqsave(&vport->work_port_lock, flags);
2470 vport->work_port_events |= WORKER_DISC_TMO;
2471 spin_unlock_irqrestore(&vport->work_port_lock, flags);
2472
2473 spin_lock_irqsave(&phba->hbalock, flags);
2474 if (phba->work_wait)
2475 lpfc_worker_wake_up(phba);
2476 spin_unlock_irqrestore(&phba->hbalock, flags);
2477 }
2478 return;
2479 }
2480
2481 static void
2482 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
2483 {
2484 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2485 struct lpfc_hba *phba = vport->phba;
2486 struct lpfc_sli *psli = &phba->sli;
2487 struct lpfc_nodelist *ndlp, *next_ndlp;
2488 LPFC_MBOXQ_t *initlinkmbox;
2489 int rc, clrlaerr = 0;
2490
2491 if (!(vport->fc_flag & FC_DISC_TMO))
2492 return;
2493
2494 spin_lock_irq(shost->host_lock);
2495 vport->fc_flag &= ~FC_DISC_TMO;
2496 spin_unlock_irq(shost->host_lock);
2497
2498 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2499 "disc timeout: state:x%x rtry:x%x flg:x%x",
2500 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
2501
2502 switch (vport->port_state) {
2503
2504 case LPFC_LOCAL_CFG_LINK:
2505 /* port_state is identically LPFC_LOCAL_CFG_LINK while waiting for
2506 * FAN
2507 */
2508 /* FAN timeout */
2509 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
2510 "0221 FAN timeout\n");
2511 /* Start discovery by sending FLOGI, clean up old rpis */
2512 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2513 nlp_listp) {
2514 if (ndlp->nlp_state != NLP_STE_NPR_NODE)
2515 continue;
2516 if (ndlp->nlp_type & NLP_FABRIC) {
2517 /* Clean up the ndlp on Fabric connections */
2518 lpfc_drop_node(vport, ndlp);
2519 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2520 /* Fail outstanding IO now since device
2521 * is marked for PLOGI.
2522 */
2523 lpfc_unreg_rpi(vport, ndlp);
2524 }
2525 }
2526 if (vport->port_state != LPFC_FLOGI) {
2527 vport->port_state = LPFC_FLOGI;
2528 lpfc_set_disctmo(vport);
2529 lpfc_initial_flogi(vport);
2530 }
2531 break;
2532
2533 case LPFC_FDISC:
2534 case LPFC_FLOGI:
2535 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
2536 /* Initial FLOGI timeout */
2537 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2538 "0222 Initial %s timeout\n",
2539 vport->vpi ? "FLOGI" : "FDISC");
2540
2541 /* Assume no Fabric and go on with discovery.
2542 * Check for outstanding ELS FLOGI to abort.
2543 */
2544
2545 /* FLOGI failed, so just use loop map to make discovery list */
2546 lpfc_disc_list_loopmap(vport);
2547
2548 /* Start discovery */
2549 lpfc_disc_start(vport);
2550 break;
2551
2552 case LPFC_FABRIC_CFG_LINK:
2553 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
2554 NameServer login */
2555 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2556 "0223 Timeout while waiting for "
2557 "NameServer login\n");
2558 /* Next look for NameServer ndlp */
2559 ndlp = lpfc_findnode_did(vport, NameServer_DID);
2560 if (ndlp)
2561 lpfc_nlp_put(ndlp);
2562 /* Start discovery */
2563 lpfc_disc_start(vport);
2564 break;
2565
2566 case LPFC_NS_QRY:
2567 /* Check for wait for NameServer Rsp timeout */
2568 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2569 "0224 NameServer Query timeout "
2570 "Data: x%x x%x\n",
2571 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2572
2573 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
2574 /* Try it one more time */
2575 vport->fc_ns_retry++;
2576 rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
2577 vport->fc_ns_retry, 0);
2578 if (rc == 0)
2579 break;
2580 }
2581 vport->fc_ns_retry = 0;
2582
2583 /*
2584 * Discovery is over.
2585 * set port_state to PORT_READY if SLI2.
2586 * cmpl_reg_vpi will set port_state to READY for SLI3.
2587 */
2588 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2589 lpfc_issue_reg_vpi(phba, vport);
2590 else { /* NPIV Not enabled */
2591 lpfc_issue_clear_la(phba, vport);
2592 vport->port_state = LPFC_VPORT_READY;
2593 }
2594
2595 /* Setup and issue mailbox INITIALIZE LINK command */
2596 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2597 if (!initlinkmbox) {
2598 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2599 "0206 Device Discovery "
2600 "completion error\n");
2601 phba->link_state = LPFC_HBA_ERROR;
2602 break;
2603 }
2604
2605 lpfc_linkdown(phba);
2606 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
2607 phba->cfg_link_speed);
2608 initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
2609 initlinkmbox->vport = vport;
2610 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2611 rc = lpfc_sli_issue_mbox(phba, initlinkmbox,
2612 (MBX_NOWAIT | MBX_STOP_IOCB));
2613 lpfc_set_loopback_flag(phba);
2614 if (rc == MBX_NOT_FINISHED)
2615 mempool_free(initlinkmbox, phba->mbox_mem_pool);
2616
2617 break;
2618
2619 case LPFC_DISC_AUTH:
2620 /* Node Authentication timeout */
2621 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2622 "0227 Node Authentication timeout\n");
2623 lpfc_disc_flush_list(vport);
2624
2625 /*
2626 * set port_state to PORT_READY if SLI2.
2627 * cmpl_reg_vpi will set port_state to READY for SLI3.
2628 */
2629 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2630 lpfc_issue_reg_vpi(phba, vport);
2631 else { /* NPIV Not enabled */
2632 lpfc_issue_clear_la(phba, vport);
2633 vport->port_state = LPFC_VPORT_READY;
2634 }
2635 break;
2636
2637 case LPFC_VPORT_READY:
2638 if (vport->fc_flag & FC_RSCN_MODE) {
2639 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2640 "0231 RSCN timeout Data: x%x "
2641 "x%x\n",
2642 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2643
2644 /* Cleanup any outstanding ELS commands */
2645 lpfc_els_flush_cmd(vport);
2646
2647 lpfc_els_flush_rscn(vport);
2648 lpfc_disc_flush_list(vport);
2649 }
2650 break;
2651
2652 default:
2653 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2654 "0229 Unexpected discovery timeout, "
2655 "vport State x%x\n", vport->port_state);
2656 break;
2657 }
2658
2659 switch (phba->link_state) {
2660 case LPFC_CLEAR_LA:
2661 /* CLEAR LA timeout */
2662 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2663 "0228 CLEAR LA timeout\n");
2664 clrlaerr = 1;
2665 break;
2666
2667 case LPFC_LINK_UNKNOWN:
2668 case LPFC_WARM_START:
2669 case LPFC_INIT_START:
2670 case LPFC_INIT_MBX_CMDS:
2671 case LPFC_LINK_DOWN:
2672 case LPFC_LINK_UP:
2673 case LPFC_HBA_ERROR:
2674 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2675 "0230 Unexpected timeout, hba link "
2676 "state x%x\n", phba->link_state);
2677 clrlaerr = 1;
2678 break;
2679
2680 case LPFC_HBA_READY:
2681 break;
2682 }
2683
2684 if (clrlaerr) {
2685 lpfc_disc_flush_list(vport);
2686 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2687 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2688 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2689 vport->port_state = LPFC_VPORT_READY;
2690 }
2691
2692 return;
2693 }
2694
2695 /*
2696 * This routine handles processing a NameServer REG_LOGIN mailbox
2697 * command upon completion. It is setup in the LPFC_MBOXQ
2698 * as the completion routine when the command is
2699 * handed off to the SLI layer.
2700 */
2701 void
2702 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2703 {
2704 MAILBOX_t *mb = &pmb->mb;
2705 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2706 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2707 struct lpfc_vport *vport = pmb->vport;
2708
2709 pmb->context1 = NULL;
2710
2711 ndlp->nlp_rpi = mb->un.varWords[0];
2712 ndlp->nlp_type |= NLP_FABRIC;
2713 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2714
2715 /*
2716 * Start issuing Fabric-Device Management Interface (FDMI) command to
2717 * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
2718 * fdmi-on=2 (supporting RPA/hostnmae)
2719 */
2720
2721 if (vport->cfg_fdmi_on == 1)
2722 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
2723 else
2724 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
2725
2726 /* Mailbox took a reference to the node */
2727 lpfc_nlp_put(ndlp);
2728 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2729 kfree(mp);
2730 mempool_free(pmb, phba->mbox_mem_pool);
2731
2732 return;
2733 }
2734
2735 static int
2736 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
2737 {
2738 uint16_t *rpi = param;
2739
2740 return ndlp->nlp_rpi == *rpi;
2741 }
2742
2743 static int
2744 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
2745 {
2746 return memcmp(&ndlp->nlp_portname, param,
2747 sizeof(ndlp->nlp_portname)) == 0;
2748 }
2749
2750 struct lpfc_nodelist *
2751 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
2752 {
2753 struct lpfc_nodelist *ndlp;
2754
2755 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2756 if (ndlp->nlp_state != NLP_STE_UNUSED_NODE &&
2757 filter(ndlp, param))
2758 return ndlp;
2759 }
2760 return NULL;
2761 }
2762
2763 /*
2764 * Search node lists for a remote port matching filter criteria
2765 * Caller needs to hold host_lock before calling this routine.
2766 */
2767 struct lpfc_nodelist *
2768 lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
2769 {
2770 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2771 struct lpfc_nodelist *ndlp;
2772
2773 spin_lock_irq(shost->host_lock);
2774 ndlp = __lpfc_find_node(vport, filter, param);
2775 spin_unlock_irq(shost->host_lock);
2776 return ndlp;
2777 }
2778
2779 /*
2780 * This routine looks up the ndlp lists for the given RPI. If rpi found it
2781 * returns the node list element pointer else return NULL.
2782 */
2783 struct lpfc_nodelist *
2784 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
2785 {
2786 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
2787 }
2788
2789 struct lpfc_nodelist *
2790 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
2791 {
2792 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2793 struct lpfc_nodelist *ndlp;
2794
2795 spin_lock_irq(shost->host_lock);
2796 ndlp = __lpfc_findnode_rpi(vport, rpi);
2797 spin_unlock_irq(shost->host_lock);
2798 return ndlp;
2799 }
2800
2801 /*
2802 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
2803 * returns the node element list pointer else return NULL.
2804 */
2805 struct lpfc_nodelist *
2806 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
2807 {
2808 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2809 struct lpfc_nodelist *ndlp;
2810
2811 spin_lock_irq(shost->host_lock);
2812 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
2813 spin_unlock_irq(shost->host_lock);
2814 return ndlp;
2815 }
2816
2817 void
2818 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2819 uint32_t did)
2820 {
2821 memset(ndlp, 0, sizeof (struct lpfc_nodelist));
2822 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
2823 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
2824 init_timer(&ndlp->nlp_delayfunc);
2825 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
2826 ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
2827 ndlp->nlp_DID = did;
2828 ndlp->vport = vport;
2829 ndlp->nlp_sid = NLP_NO_SID;
2830 INIT_LIST_HEAD(&ndlp->nlp_listp);
2831 kref_init(&ndlp->kref);
2832
2833 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2834 "node init: did:x%x",
2835 ndlp->nlp_DID, 0, 0);
2836
2837 return;
2838 }
2839
2840 static void
2841 lpfc_nlp_release(struct kref *kref)
2842 {
2843 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
2844 kref);
2845
2846 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2847 "node release: did:x%x flg:x%x type:x%x",
2848 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
2849
2850 lpfc_nlp_remove(ndlp->vport, ndlp);
2851 mempool_free(ndlp, ndlp->vport->phba->nlp_mem_pool);
2852 }
2853
2854 struct lpfc_nodelist *
2855 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
2856 {
2857 if (ndlp)
2858 kref_get(&ndlp->kref);
2859 return ndlp;
2860 }
2861
2862 int
2863 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
2864 {
2865 return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0;
2866 }
Linux kernel - Deliverables
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