?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
[SCSI] lpfc 8.2.8 : Add MSI-X support
[linux-2.6/mini2440.git] / drivers / scsi / lpfc / lpfc_hbadisc.c
blob3b00d9b86c7b5d34c04b0a08292d4725ebec1c27
1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2008 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 static void lpfc_disc_flush_list(struct lpfc_vport *vport);
61
62 void
63 lpfc_terminate_rport_io(struct fc_rport *rport)
64 {
65 struct lpfc_rport_data *rdata;
66 struct lpfc_nodelist * ndlp;
67 struct lpfc_hba *phba;
68
69 rdata = rport->dd_data;
70 ndlp = rdata->pnode;
71
72 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
73 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
74 printk(KERN_ERR "Cannot find remote node"
75 " to terminate I/O Data x%x\n",
76 rport->port_id);
77 return;
78 }
79
80 phba = ndlp->vport->phba;
81
82 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
83 "rport terminate: sid:x%x did:x%x flg:x%x",
84 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
85
86 if (ndlp->nlp_sid != NLP_NO_SID) {
87 lpfc_sli_abort_iocb(ndlp->vport,
88 &phba->sli.ring[phba->sli.fcp_ring],
89 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
90 }
91 }
92
93 /*
94 * This function will be called when dev_loss_tmo fire.
95 */
96 void
97 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
98 {
99 struct lpfc_rport_data *rdata;
100 struct lpfc_nodelist * ndlp;
101 struct lpfc_vport *vport;
102 struct lpfc_hba *phba;
103 struct lpfc_work_evt *evtp;
104 int put_node;
105 int put_rport;
106
107 rdata = rport->dd_data;
108 ndlp = rdata->pnode;
109 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
110 return;
111
112 vport = ndlp->vport;
113 phba = vport->phba;
114
115 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
116 "rport devlosscb: sid:x%x did:x%x flg:x%x",
117 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
118
119 /* Don't defer this if we are in the process of deleting the vport
120 * or unloading the driver. The unload will cleanup the node
121 * appropriately we just need to cleanup the ndlp rport info here.
122 */
123 if (vport->load_flag & FC_UNLOADING) {
124 put_node = rdata->pnode != NULL;
125 put_rport = ndlp->rport != NULL;
126 rdata->pnode = NULL;
127 ndlp->rport = NULL;
128 if (put_node)
129 lpfc_nlp_put(ndlp);
130 if (put_rport)
131 put_device(&rport->dev);
132 return;
133 }
134
135 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
136 return;
137
138 evtp = &ndlp->dev_loss_evt;
139
140 if (!list_empty(&evtp->evt_listp))
141 return;
142
143 spin_lock_irq(&phba->hbalock);
144 /* We need to hold the node by incrementing the reference
145 * count until this queued work is done
146 */
147 evtp->evt_arg1 = lpfc_nlp_get(ndlp);
148 if (evtp->evt_arg1) {
149 evtp->evt = LPFC_EVT_DEV_LOSS;
150 list_add_tail(&evtp->evt_listp, &phba->work_list);
151 lpfc_worker_wake_up(phba);
152 }
153 spin_unlock_irq(&phba->hbalock);
154
155 return;
156 }
157
158 /*
159 * This function is called from the worker thread when dev_loss_tmo
160 * expire.
161 */
162 static void
163 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
164 {
165 struct lpfc_rport_data *rdata;
166 struct fc_rport *rport;
167 struct lpfc_vport *vport;
168 struct lpfc_hba *phba;
169 uint8_t *name;
170 int put_node;
171 int put_rport;
172 int warn_on = 0;
173
174 rport = ndlp->rport;
175
176 if (!rport)
177 return;
178
179 rdata = rport->dd_data;
180 name = (uint8_t *) &ndlp->nlp_portname;
181 vport = ndlp->vport;
182 phba = vport->phba;
183
184 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
185 "rport devlosstmo:did:x%x type:x%x id:x%x",
186 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
187
188 /* Don't defer this if we are in the process of deleting the vport
189 * or unloading the driver. The unload will cleanup the node
190 * appropriately we just need to cleanup the ndlp rport info here.
191 */
192 if (vport->load_flag & FC_UNLOADING) {
193 if (ndlp->nlp_sid != NLP_NO_SID) {
194 /* flush the target */
195 lpfc_sli_abort_iocb(vport,
196 &phba->sli.ring[phba->sli.fcp_ring],
197 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
198 }
199 put_node = rdata->pnode != NULL;
200 put_rport = ndlp->rport != NULL;
201 rdata->pnode = NULL;
202 ndlp->rport = NULL;
203 if (put_node)
204 lpfc_nlp_put(ndlp);
205 if (put_rport)
206 put_device(&rport->dev);
207 return;
208 }
209
210 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
211 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
212 "0284 Devloss timeout Ignored on "
213 "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
214 "NPort x%x\n",
215 *name, *(name+1), *(name+2), *(name+3),
216 *(name+4), *(name+5), *(name+6), *(name+7),
217 ndlp->nlp_DID);
218 return;
219 }
220
221 if (ndlp->nlp_type & NLP_FABRIC) {
222 /* We will clean up these Nodes in linkup */
223 put_node = rdata->pnode != NULL;
224 put_rport = ndlp->rport != NULL;
225 rdata->pnode = NULL;
226 ndlp->rport = NULL;
227 if (put_node)
228 lpfc_nlp_put(ndlp);
229 if (put_rport)
230 put_device(&rport->dev);
231 return;
232 }
233
234 if (ndlp->nlp_sid != NLP_NO_SID) {
235 warn_on = 1;
236 /* flush the target */
237 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
238 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
239 }
240
241 if (warn_on) {
242 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
243 "0203 Devloss timeout on "
244 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
245 "NPort x%06x Data: x%x x%x x%x\n",
246 *name, *(name+1), *(name+2), *(name+3),
247 *(name+4), *(name+5), *(name+6), *(name+7),
248 ndlp->nlp_DID, ndlp->nlp_flag,
249 ndlp->nlp_state, ndlp->nlp_rpi);
250 } else {
251 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
252 "0204 Devloss timeout on "
253 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
254 "NPort x%06x Data: x%x x%x x%x\n",
255 *name, *(name+1), *(name+2), *(name+3),
256 *(name+4), *(name+5), *(name+6), *(name+7),
257 ndlp->nlp_DID, ndlp->nlp_flag,
258 ndlp->nlp_state, ndlp->nlp_rpi);
259 }
260
261 put_node = rdata->pnode != NULL;
262 put_rport = ndlp->rport != NULL;
263 rdata->pnode = NULL;
264 ndlp->rport = NULL;
265 if (put_node)
266 lpfc_nlp_put(ndlp);
267 if (put_rport)
268 put_device(&rport->dev);
269
270 if (!(vport->load_flag & FC_UNLOADING) &&
271 !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
272 !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
273 (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE))
274 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
275 }
276
277 static void
278 lpfc_work_list_done(struct lpfc_hba *phba)
279 {
280 struct lpfc_work_evt *evtp = NULL;
281 struct lpfc_nodelist *ndlp;
282 int free_evt;
283
284 spin_lock_irq(&phba->hbalock);
285 while (!list_empty(&phba->work_list)) {
286 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
287 evt_listp);
288 spin_unlock_irq(&phba->hbalock);
289 free_evt = 1;
290 switch (evtp->evt) {
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 /* decrement the node reference count held
296 * for this queued work
297 */
298 lpfc_nlp_put(ndlp);
299 break;
300 case LPFC_EVT_DEV_LOSS:
301 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
302 lpfc_dev_loss_tmo_handler(ndlp);
303 free_evt = 0;
304 /* decrement the node reference count held for
305 * this queued work
306 */
307 lpfc_nlp_put(ndlp);
308 break;
309 case LPFC_EVT_ONLINE:
310 if (phba->link_state < LPFC_LINK_DOWN)
311 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
312 else
313 *(int *) (evtp->evt_arg1) = 0;
314 complete((struct completion *)(evtp->evt_arg2));
315 break;
316 case LPFC_EVT_OFFLINE_PREP:
317 if (phba->link_state >= LPFC_LINK_DOWN)
318 lpfc_offline_prep(phba);
319 *(int *)(evtp->evt_arg1) = 0;
320 complete((struct completion *)(evtp->evt_arg2));
321 break;
322 case LPFC_EVT_OFFLINE:
323 lpfc_offline(phba);
324 lpfc_sli_brdrestart(phba);
325 *(int *)(evtp->evt_arg1) =
326 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
327 lpfc_unblock_mgmt_io(phba);
328 complete((struct completion *)(evtp->evt_arg2));
329 break;
330 case LPFC_EVT_WARM_START:
331 lpfc_offline(phba);
332 lpfc_reset_barrier(phba);
333 lpfc_sli_brdreset(phba);
334 lpfc_hba_down_post(phba);
335 *(int *)(evtp->evt_arg1) =
336 lpfc_sli_brdready(phba, HS_MBRDY);
337 lpfc_unblock_mgmt_io(phba);
338 complete((struct completion *)(evtp->evt_arg2));
339 break;
340 case LPFC_EVT_KILL:
341 lpfc_offline(phba);
342 *(int *)(evtp->evt_arg1)
343 = (phba->pport->stopped)
344 ? 0 : lpfc_sli_brdkill(phba);
345 lpfc_unblock_mgmt_io(phba);
346 complete((struct completion *)(evtp->evt_arg2));
347 break;
348 }
349 if (free_evt)
350 kfree(evtp);
351 spin_lock_irq(&phba->hbalock);
352 }
353 spin_unlock_irq(&phba->hbalock);
354
355 }
356
357 static void
358 lpfc_work_done(struct lpfc_hba *phba)
359 {
360 struct lpfc_sli_ring *pring;
361 uint32_t ha_copy, status, control, work_port_events;
362 struct lpfc_vport **vports;
363 struct lpfc_vport *vport;
364 int i;
365
366 spin_lock_irq(&phba->hbalock);
367 ha_copy = phba->work_ha;
368 phba->work_ha = 0;
369 spin_unlock_irq(&phba->hbalock);
370
371 if (ha_copy & HA_ERATT)
372 /* Handle the error attention event */
373 lpfc_handle_eratt(phba);
374
375 if (ha_copy & HA_MBATT)
376 lpfc_sli_handle_mb_event(phba);
377
378 if (ha_copy & HA_LATT)
379 lpfc_handle_latt(phba);
380
381 vports = lpfc_create_vport_work_array(phba);
382 if (vports != NULL)
383 for(i = 0; i <= phba->max_vpi; i++) {
384 /*
385 * We could have no vports in array if unloading, so if
386 * this happens then just use the pport
387 */
388 if (vports[i] == NULL && i == 0)
389 vport = phba->pport;
390 else
391 vport = vports[i];
392 if (vport == NULL)
393 break;
394 spin_lock_irq(&vport->work_port_lock);
395 work_port_events = vport->work_port_events;
396 vport->work_port_events &= ~work_port_events;
397 spin_unlock_irq(&vport->work_port_lock);
398 if (work_port_events & WORKER_DISC_TMO)
399 lpfc_disc_timeout_handler(vport);
400 if (work_port_events & WORKER_ELS_TMO)
401 lpfc_els_timeout_handler(vport);
402 if (work_port_events & WORKER_HB_TMO)
403 lpfc_hb_timeout_handler(phba);
404 if (work_port_events & WORKER_MBOX_TMO)
405 lpfc_mbox_timeout_handler(phba);
406 if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
407 lpfc_unblock_fabric_iocbs(phba);
408 if (work_port_events & WORKER_FDMI_TMO)
409 lpfc_fdmi_timeout_handler(vport);
410 if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
411 lpfc_ramp_down_queue_handler(phba);
412 if (work_port_events & WORKER_RAMP_UP_QUEUE)
413 lpfc_ramp_up_queue_handler(phba);
414 }
415 lpfc_destroy_vport_work_array(phba, vports);
416
417 pring = &phba->sli.ring[LPFC_ELS_RING];
418 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING)));
419 status >>= (4*LPFC_ELS_RING);
420 if ((status & HA_RXMASK)
421 || (pring->flag & LPFC_DEFERRED_RING_EVENT)) {
422 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
423 pring->flag |= LPFC_DEFERRED_RING_EVENT;
424 /* Set the lpfc data pending flag */
425 set_bit(LPFC_DATA_READY, &phba->data_flags);
426 } else {
427 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
428 lpfc_sli_handle_slow_ring_event(phba, pring,
429 (status &
430 HA_RXMASK));
431 }
432 /*
433 * Turn on Ring interrupts
434 */
435 spin_lock_irq(&phba->hbalock);
436 control = readl(phba->HCregaddr);
437 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
438 lpfc_debugfs_slow_ring_trc(phba,
439 "WRK Enable ring: cntl:x%x hacopy:x%x",
440 control, ha_copy, 0);
441
442 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
443 writel(control, phba->HCregaddr);
444 readl(phba->HCregaddr); /* flush */
445 }
446 else {
447 lpfc_debugfs_slow_ring_trc(phba,
448 "WRK Ring ok: cntl:x%x hacopy:x%x",
449 control, ha_copy, 0);
450 }
451 spin_unlock_irq(&phba->hbalock);
452 }
453 lpfc_work_list_done(phba);
454 }
455
456 int
457 lpfc_do_work(void *p)
458 {
459 struct lpfc_hba *phba = p;
460 int rc;
461
462 set_user_nice(current, -20);
463 phba->data_flags = 0;
464
465 while (1) {
466 /* wait and check worker queue activities */
467 rc = wait_event_interruptible(phba->work_waitq,
468 (test_and_clear_bit(LPFC_DATA_READY,
469 &phba->data_flags)
470 || kthread_should_stop()));
471 BUG_ON(rc);
472
473 if (kthread_should_stop())
474 break;
475
476 /* Attend pending lpfc data processing */
477 lpfc_work_done(phba);
478 }
479 return 0;
480 }
481
482 /*
483 * This is only called to handle FC worker events. Since this a rare
484 * occurance, we allocate a struct lpfc_work_evt structure here instead of
485 * embedding it in the IOCB.
486 */
487 int
488 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
489 uint32_t evt)
490 {
491 struct lpfc_work_evt *evtp;
492 unsigned long flags;
493
494 /*
495 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
496 * be queued to worker thread for processing
497 */
498 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
499 if (!evtp)
500 return 0;
501
502 evtp->evt_arg1 = arg1;
503 evtp->evt_arg2 = arg2;
504 evtp->evt = evt;
505
506 spin_lock_irqsave(&phba->hbalock, flags);
507 list_add_tail(&evtp->evt_listp, &phba->work_list);
508 spin_unlock_irqrestore(&phba->hbalock, flags);
509
510 lpfc_worker_wake_up(phba);
511
512 return 1;
513 }
514
515 void
516 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
517 {
518 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
519 struct lpfc_hba *phba = vport->phba;
520 struct lpfc_nodelist *ndlp, *next_ndlp;
521 int rc;
522
523 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
524 if (!NLP_CHK_NODE_ACT(ndlp))
525 continue;
526 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
527 continue;
528 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
529 ((vport->port_type == LPFC_NPIV_PORT) &&
530 (ndlp->nlp_DID == NameServer_DID)))
531 lpfc_unreg_rpi(vport, ndlp);
532
533 /* Leave Fabric nodes alone on link down */
534 if (!remove && ndlp->nlp_type & NLP_FABRIC)
535 continue;
536 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
537 remove
538 ? NLP_EVT_DEVICE_RM
539 : NLP_EVT_DEVICE_RECOVERY);
540 }
541 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
542 lpfc_mbx_unreg_vpi(vport);
543 spin_lock_irq(shost->host_lock);
544 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
545 spin_unlock_irq(shost->host_lock);
546 }
547 }
548
549 void
550 lpfc_port_link_failure(struct lpfc_vport *vport)
551 {
552 /* Cleanup any outstanding RSCN activity */
553 lpfc_els_flush_rscn(vport);
554
555 /* Cleanup any outstanding ELS commands */
556 lpfc_els_flush_cmd(vport);
557
558 lpfc_cleanup_rpis(vport, 0);
559
560 /* Turn off discovery timer if its running */
561 lpfc_can_disctmo(vport);
562 }
563
564 static void
565 lpfc_linkdown_port(struct lpfc_vport *vport)
566 {
567 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
568
569 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
570
571 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
572 "Link Down: state:x%x rtry:x%x flg:x%x",
573 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
574
575 lpfc_port_link_failure(vport);
576
577 }
578
579 int
580 lpfc_linkdown(struct lpfc_hba *phba)
581 {
582 struct lpfc_vport *vport = phba->pport;
583 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
584 struct lpfc_vport **vports;
585 LPFC_MBOXQ_t *mb;
586 int i;
587
588 if (phba->link_state == LPFC_LINK_DOWN)
589 return 0;
590 spin_lock_irq(&phba->hbalock);
591 if (phba->link_state > LPFC_LINK_DOWN) {
592 phba->link_state = LPFC_LINK_DOWN;
593 phba->pport->fc_flag &= ~FC_LBIT;
594 }
595 spin_unlock_irq(&phba->hbalock);
596 vports = lpfc_create_vport_work_array(phba);
597 if (vports != NULL)
598 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
599 /* Issue a LINK DOWN event to all nodes */
600 lpfc_linkdown_port(vports[i]);
601 }
602 lpfc_destroy_vport_work_array(phba, vports);
603 /* Clean up any firmware default rpi's */
604 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
605 if (mb) {
606 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
607 mb->vport = vport;
608 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
609 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
610 == MBX_NOT_FINISHED) {
611 mempool_free(mb, phba->mbox_mem_pool);
612 }
613 }
614
615 /* Setup myDID for link up if we are in pt2pt mode */
616 if (phba->pport->fc_flag & FC_PT2PT) {
617 phba->pport->fc_myDID = 0;
618 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
619 if (mb) {
620 lpfc_config_link(phba, mb);
621 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
622 mb->vport = vport;
623 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
624 == MBX_NOT_FINISHED) {
625 mempool_free(mb, phba->mbox_mem_pool);
626 }
627 }
628 spin_lock_irq(shost->host_lock);
629 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
630 spin_unlock_irq(shost->host_lock);
631 }
632
633 return 0;
634 }
635
636 static void
637 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
638 {
639 struct lpfc_nodelist *ndlp;
640
641 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
642 if (!NLP_CHK_NODE_ACT(ndlp))
643 continue;
644 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
645 continue;
646 if (ndlp->nlp_type & NLP_FABRIC) {
647 /* On Linkup its safe to clean up the ndlp
648 * from Fabric connections.
649 */
650 if (ndlp->nlp_DID != Fabric_DID)
651 lpfc_unreg_rpi(vport, ndlp);
652 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
653 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
654 /* Fail outstanding IO now since device is
655 * marked for PLOGI.
656 */
657 lpfc_unreg_rpi(vport, ndlp);
658 }
659 }
660 }
661
662 static void
663 lpfc_linkup_port(struct lpfc_vport *vport)
664 {
665 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
666 struct lpfc_hba *phba = vport->phba;
667
668 if ((vport->load_flag & FC_UNLOADING) != 0)
669 return;
670
671 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
672 "Link Up: top:x%x speed:x%x flg:x%x",
673 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
674
675 /* If NPIV is not enabled, only bring the physical port up */
676 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
677 (vport != phba->pport))
678 return;
679
680 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
681
682 spin_lock_irq(shost->host_lock);
683 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
684 FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
685 vport->fc_flag |= FC_NDISC_ACTIVE;
686 vport->fc_ns_retry = 0;
687 spin_unlock_irq(shost->host_lock);
688
689 if (vport->fc_flag & FC_LBIT)
690 lpfc_linkup_cleanup_nodes(vport);
691
692 }
693
694 static int
695 lpfc_linkup(struct lpfc_hba *phba)
696 {
697 struct lpfc_vport **vports;
698 int i;
699
700 phba->link_state = LPFC_LINK_UP;
701
702 /* Unblock fabric iocbs if they are blocked */
703 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
704 del_timer_sync(&phba->fabric_block_timer);
705
706 vports = lpfc_create_vport_work_array(phba);
707 if (vports != NULL)
708 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++)
709 lpfc_linkup_port(vports[i]);
710 lpfc_destroy_vport_work_array(phba, vports);
711 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
712 lpfc_issue_clear_la(phba, phba->pport);
713
714 return 0;
715 }
716
717 /*
718 * This routine handles processing a CLEAR_LA mailbox
719 * command upon completion. It is setup in the LPFC_MBOXQ
720 * as the completion routine when the command is
721 * handed off to the SLI layer.
722 */
723 static void
724 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
725 {
726 struct lpfc_vport *vport = pmb->vport;
727 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
728 struct lpfc_sli *psli = &phba->sli;
729 MAILBOX_t *mb = &pmb->mb;
730 uint32_t control;
731
732 /* Since we don't do discovery right now, turn these off here */
733 psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
734 psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
735 psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
736
737 /* Check for error */
738 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
739 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
740 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
741 "0320 CLEAR_LA mbxStatus error x%x hba "
742 "state x%x\n",
743 mb->mbxStatus, vport->port_state);
744 phba->link_state = LPFC_HBA_ERROR;
745 goto out;
746 }
747
748 if (vport->port_type == LPFC_PHYSICAL_PORT)
749 phba->link_state = LPFC_HBA_READY;
750
751 spin_lock_irq(&phba->hbalock);
752 psli->sli_flag |= LPFC_PROCESS_LA;
753 control = readl(phba->HCregaddr);
754 control |= HC_LAINT_ENA;
755 writel(control, phba->HCregaddr);
756 readl(phba->HCregaddr); /* flush */
757 spin_unlock_irq(&phba->hbalock);
758 mempool_free(pmb, phba->mbox_mem_pool);
759 return;
760
761 out:
762 /* Device Discovery completes */
763 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
764 "0225 Device Discovery completes\n");
765 mempool_free(pmb, phba->mbox_mem_pool);
766
767 spin_lock_irq(shost->host_lock);
768 vport->fc_flag &= ~FC_ABORT_DISCOVERY;
769 spin_unlock_irq(shost->host_lock);
770
771 lpfc_can_disctmo(vport);
772
773 /* turn on Link Attention interrupts */
774
775 spin_lock_irq(&phba->hbalock);
776 psli->sli_flag |= LPFC_PROCESS_LA;
777 control = readl(phba->HCregaddr);
778 control |= HC_LAINT_ENA;
779 writel(control, phba->HCregaddr);
780 readl(phba->HCregaddr); /* flush */
781 spin_unlock_irq(&phba->hbalock);
782
783 return;
784 }
785
786
787 static void
788 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
789 {
790 struct lpfc_vport *vport = pmb->vport;
791
792 if (pmb->mb.mbxStatus)
793 goto out;
794
795 mempool_free(pmb, phba->mbox_mem_pool);
796
797 if (phba->fc_topology == TOPOLOGY_LOOP &&
798 vport->fc_flag & FC_PUBLIC_LOOP &&
799 !(vport->fc_flag & FC_LBIT)) {
800 /* Need to wait for FAN - use discovery timer
801 * for timeout. port_state is identically
802 * LPFC_LOCAL_CFG_LINK while waiting for FAN
803 */
804 lpfc_set_disctmo(vport);
805 return;
806 }
807
808 /* Start discovery by sending a FLOGI. port_state is identically
809 * LPFC_FLOGI while waiting for FLOGI cmpl
810 */
811 if (vport->port_state != LPFC_FLOGI) {
812 lpfc_initial_flogi(vport);
813 }
814 return;
815
816 out:
817 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
818 "0306 CONFIG_LINK mbxStatus error x%x "
819 "HBA state x%x\n",
820 pmb->mb.mbxStatus, vport->port_state);
821 mempool_free(pmb, phba->mbox_mem_pool);
822
823 lpfc_linkdown(phba);
824
825 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
826 "0200 CONFIG_LINK bad hba state x%x\n",
827 vport->port_state);
828
829 lpfc_issue_clear_la(phba, vport);
830 return;
831 }
832
833 static void
834 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
835 {
836 MAILBOX_t *mb = &pmb->mb;
837 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
838 struct lpfc_vport *vport = pmb->vport;
839
840
841 /* Check for error */
842 if (mb->mbxStatus) {
843 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
844 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
845 "0319 READ_SPARAM mbxStatus error x%x "
846 "hba state x%x>\n",
847 mb->mbxStatus, vport->port_state);
848 lpfc_linkdown(phba);
849 goto out;
850 }
851
852 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
853 sizeof (struct serv_parm));
854 if (phba->cfg_soft_wwnn)
855 u64_to_wwn(phba->cfg_soft_wwnn,
856 vport->fc_sparam.nodeName.u.wwn);
857 if (phba->cfg_soft_wwpn)
858 u64_to_wwn(phba->cfg_soft_wwpn,
859 vport->fc_sparam.portName.u.wwn);
860 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
861 sizeof(vport->fc_nodename));
862 memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
863 sizeof(vport->fc_portname));
864 if (vport->port_type == LPFC_PHYSICAL_PORT) {
865 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
866 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
867 }
868
869 lpfc_mbuf_free(phba, mp->virt, mp->phys);
870 kfree(mp);
871 mempool_free(pmb, phba->mbox_mem_pool);
872 return;
873
874 out:
875 pmb->context1 = NULL;
876 lpfc_mbuf_free(phba, mp->virt, mp->phys);
877 kfree(mp);
878 lpfc_issue_clear_la(phba, vport);
879 mempool_free(pmb, phba->mbox_mem_pool);
880 return;
881 }
882
883 static void
884 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
885 {
886 struct lpfc_vport *vport = phba->pport;
887 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox;
888 int i;
889 struct lpfc_dmabuf *mp;
890 int rc;
891
892 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
893 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
894
895 spin_lock_irq(&phba->hbalock);
896 switch (la->UlnkSpeed) {
897 case LA_1GHZ_LINK:
898 phba->fc_linkspeed = LA_1GHZ_LINK;
899 break;
900 case LA_2GHZ_LINK:
901 phba->fc_linkspeed = LA_2GHZ_LINK;
902 break;
903 case LA_4GHZ_LINK:
904 phba->fc_linkspeed = LA_4GHZ_LINK;
905 break;
906 case LA_8GHZ_LINK:
907 phba->fc_linkspeed = LA_8GHZ_LINK;
908 break;
909 default:
910 phba->fc_linkspeed = LA_UNKNW_LINK;
911 break;
912 }
913
914 phba->fc_topology = la->topology;
915 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
916
917 if (phba->fc_topology == TOPOLOGY_LOOP) {
918 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
919
920 if (phba->cfg_enable_npiv)
921 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
922 "1309 Link Up Event npiv not supported in loop "
923 "topology\n");
924 /* Get Loop Map information */
925 if (la->il)
926 vport->fc_flag |= FC_LBIT;
927
928 vport->fc_myDID = la->granted_AL_PA;
929 i = la->un.lilpBde64.tus.f.bdeSize;
930
931 if (i == 0) {
932 phba->alpa_map[0] = 0;
933 } else {
934 if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
935 int numalpa, j, k;
936 union {
937 uint8_t pamap[16];
938 struct {
939 uint32_t wd1;
940 uint32_t wd2;
941 uint32_t wd3;
942 uint32_t wd4;
943 } pa;
944 } un;
945 numalpa = phba->alpa_map[0];
946 j = 0;
947 while (j < numalpa) {
948 memset(un.pamap, 0, 16);
949 for (k = 1; j < numalpa; k++) {
950 un.pamap[k - 1] =
951 phba->alpa_map[j + 1];
952 j++;
953 if (k == 16)
954 break;
955 }
956 /* Link Up Event ALPA map */
957 lpfc_printf_log(phba,
958 KERN_WARNING,
959 LOG_LINK_EVENT,
960 "1304 Link Up Event "
961 "ALPA map Data: x%x "
962 "x%x x%x x%x\n",
963 un.pa.wd1, un.pa.wd2,
964 un.pa.wd3, un.pa.wd4);
965 }
966 }
967 }
968 } else {
969 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
970 if (phba->max_vpi && phba->cfg_enable_npiv &&
971 (phba->sli_rev == 3))
972 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
973 }
974 vport->fc_myDID = phba->fc_pref_DID;
975 vport->fc_flag |= FC_LBIT;
976 }
977 spin_unlock_irq(&phba->hbalock);
978
979 lpfc_linkup(phba);
980 if (sparam_mbox) {
981 lpfc_read_sparam(phba, sparam_mbox, 0);
982 sparam_mbox->vport = vport;
983 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
984 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
985 if (rc == MBX_NOT_FINISHED) {
986 mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
987 lpfc_mbuf_free(phba, mp->virt, mp->phys);
988 kfree(mp);
989 mempool_free(sparam_mbox, phba->mbox_mem_pool);
990 if (cfglink_mbox)
991 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
992 goto out;
993 }
994 }
995
996 if (cfglink_mbox) {
997 vport->port_state = LPFC_LOCAL_CFG_LINK;
998 lpfc_config_link(phba, cfglink_mbox);
999 cfglink_mbox->vport = vport;
1000 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
1001 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
1002 if (rc != MBX_NOT_FINISHED)
1003 return;
1004 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1005 }
1006 out:
1007 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1008 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1009 "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
1010 vport->port_state, sparam_mbox, cfglink_mbox);
1011 lpfc_issue_clear_la(phba, vport);
1012 return;
1013 }
1014
1015 static void
1016 lpfc_enable_la(struct lpfc_hba *phba)
1017 {
1018 uint32_t control;
1019 struct lpfc_sli *psli = &phba->sli;
1020 spin_lock_irq(&phba->hbalock);
1021 psli->sli_flag |= LPFC_PROCESS_LA;
1022 control = readl(phba->HCregaddr);
1023 control |= HC_LAINT_ENA;
1024 writel(control, phba->HCregaddr);
1025 readl(phba->HCregaddr); /* flush */
1026 spin_unlock_irq(&phba->hbalock);
1027 }
1028
1029 static void
1030 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
1031 {
1032 lpfc_linkdown(phba);
1033 lpfc_enable_la(phba);
1034 /* turn on Link Attention interrupts - no CLEAR_LA needed */
1035 }
1036
1037
1038 /*
1039 * This routine handles processing a READ_LA mailbox
1040 * command upon completion. It is setup in the LPFC_MBOXQ
1041 * as the completion routine when the command is
1042 * handed off to the SLI layer.
1043 */
1044 void
1045 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1046 {
1047 struct lpfc_vport *vport = pmb->vport;
1048 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1049 READ_LA_VAR *la;
1050 MAILBOX_t *mb = &pmb->mb;
1051 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1052
1053 /* Unblock ELS traffic */
1054 phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1055 /* Check for error */
1056 if (mb->mbxStatus) {
1057 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1058 "1307 READ_LA mbox error x%x state x%x\n",
1059 mb->mbxStatus, vport->port_state);
1060 lpfc_mbx_issue_link_down(phba);
1061 phba->link_state = LPFC_HBA_ERROR;
1062 goto lpfc_mbx_cmpl_read_la_free_mbuf;
1063 }
1064
1065 la = (READ_LA_VAR *) & pmb->mb.un.varReadLA;
1066
1067 memcpy(&phba->alpa_map[0], mp->virt, 128);
1068
1069 spin_lock_irq(shost->host_lock);
1070 if (la->pb)
1071 vport->fc_flag |= FC_BYPASSED_MODE;
1072 else
1073 vport->fc_flag &= ~FC_BYPASSED_MODE;
1074 spin_unlock_irq(shost->host_lock);
1075
1076 if (((phba->fc_eventTag + 1) < la->eventTag) ||
1077 (phba->fc_eventTag == la->eventTag)) {
1078 phba->fc_stat.LinkMultiEvent++;
1079 if (la->attType == AT_LINK_UP)
1080 if (phba->fc_eventTag != 0)
1081 lpfc_linkdown(phba);
1082 }
1083
1084 phba->fc_eventTag = la->eventTag;
1085 if (la->mm)
1086 phba->sli.sli_flag |= LPFC_MENLO_MAINT;
1087 else
1088 phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
1089
1090 if (la->attType == AT_LINK_UP && (!la->mm)) {
1091 phba->fc_stat.LinkUp++;
1092 if (phba->link_flag & LS_LOOPBACK_MODE) {
1093 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1094 "1306 Link Up Event in loop back mode "
1095 "x%x received Data: x%x x%x x%x x%x\n",
1096 la->eventTag, phba->fc_eventTag,
1097 la->granted_AL_PA, la->UlnkSpeed,
1098 phba->alpa_map[0]);
1099 } else {
1100 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1101 "1303 Link Up Event x%x received "
1102 "Data: x%x x%x x%x x%x x%x x%x %d\n",
1103 la->eventTag, phba->fc_eventTag,
1104 la->granted_AL_PA, la->UlnkSpeed,
1105 phba->alpa_map[0],
1106 la->mm, la->fa,
1107 phba->wait_4_mlo_maint_flg);
1108 }
1109 lpfc_mbx_process_link_up(phba, la);
1110 } else if (la->attType == AT_LINK_DOWN) {
1111 phba->fc_stat.LinkDown++;
1112 if (phba->link_flag & LS_LOOPBACK_MODE) {
1113 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1114 "1308 Link Down Event in loop back mode "
1115 "x%x received "
1116 "Data: x%x x%x x%x\n",
1117 la->eventTag, phba->fc_eventTag,
1118 phba->pport->port_state, vport->fc_flag);
1119 }
1120 else {
1121 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1122 "1305 Link Down Event x%x received "
1123 "Data: x%x x%x x%x x%x x%x\n",
1124 la->eventTag, phba->fc_eventTag,
1125 phba->pport->port_state, vport->fc_flag,
1126 la->mm, la->fa);
1127 }
1128 lpfc_mbx_issue_link_down(phba);
1129 }
1130 if (la->mm && la->attType == AT_LINK_UP) {
1131 if (phba->link_state != LPFC_LINK_DOWN) {
1132 phba->fc_stat.LinkDown++;
1133 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1134 "1312 Link Down Event x%x received "
1135 "Data: x%x x%x x%x\n",
1136 la->eventTag, phba->fc_eventTag,
1137 phba->pport->port_state, vport->fc_flag);
1138 lpfc_mbx_issue_link_down(phba);
1139 } else
1140 lpfc_enable_la(phba);
1141
1142 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1143 "1310 Menlo Maint Mode Link up Event x%x rcvd "
1144 "Data: x%x x%x x%x\n",
1145 la->eventTag, phba->fc_eventTag,
1146 phba->pport->port_state, vport->fc_flag);
1147 /*
1148 * The cmnd that triggered this will be waiting for this
1149 * signal.
1150 */
1151 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
1152 if (phba->wait_4_mlo_maint_flg) {
1153 phba->wait_4_mlo_maint_flg = 0;
1154 wake_up_interruptible(&phba->wait_4_mlo_m_q);
1155 }
1156 }
1157
1158 if (la->fa) {
1159 if (la->mm)
1160 lpfc_issue_clear_la(phba, vport);
1161 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1162 "1311 fa %d\n", la->fa);
1163 }
1164
1165 lpfc_mbx_cmpl_read_la_free_mbuf:
1166 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1167 kfree(mp);
1168 mempool_free(pmb, phba->mbox_mem_pool);
1169 return;
1170 }
1171
1172 /*
1173 * This routine handles processing a REG_LOGIN mailbox
1174 * command upon completion. It is setup in the LPFC_MBOXQ
1175 * as the completion routine when the command is
1176 * handed off to the SLI layer.
1177 */
1178 void
1179 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1180 {
1181 struct lpfc_vport *vport = pmb->vport;
1182 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1183 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1184
1185 pmb->context1 = NULL;
1186
1187 /* Good status, call state machine */
1188 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
1189 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1190 kfree(mp);
1191 mempool_free(pmb, phba->mbox_mem_pool);
1192 /* decrement the node reference count held for this callback
1193 * function.
1194 */
1195 lpfc_nlp_put(ndlp);
1196
1197 return;
1198 }
1199
1200 static void
1201 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1202 {
1203 MAILBOX_t *mb = &pmb->mb;
1204 struct lpfc_vport *vport = pmb->vport;
1205 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1206
1207 switch (mb->mbxStatus) {
1208 case 0x0011:
1209 case 0x0020:
1210 case 0x9700:
1211 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1212 "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
1213 mb->mbxStatus);
1214 break;
1215 }
1216 vport->unreg_vpi_cmpl = VPORT_OK;
1217 mempool_free(pmb, phba->mbox_mem_pool);
1218 /*
1219 * This shost reference might have been taken at the beginning of
1220 * lpfc_vport_delete()
1221 */
1222 if (vport->load_flag & FC_UNLOADING)
1223 scsi_host_put(shost);
1224 }
1225
1226 int
1227 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
1228 {
1229 struct lpfc_hba *phba = vport->phba;
1230 LPFC_MBOXQ_t *mbox;
1231 int rc;
1232
1233 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1234 if (!mbox)
1235 return 1;
1236
1237 lpfc_unreg_vpi(phba, vport->vpi, mbox);
1238 mbox->vport = vport;
1239 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
1240 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1241 if (rc == MBX_NOT_FINISHED) {
1242 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
1243 "1800 Could not issue unreg_vpi\n");
1244 mempool_free(mbox, phba->mbox_mem_pool);
1245 vport->unreg_vpi_cmpl = VPORT_ERROR;
1246 return rc;
1247 }
1248 return 0;
1249 }
1250
1251 static void
1252 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1253 {
1254 struct lpfc_vport *vport = pmb->vport;
1255 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1256 MAILBOX_t *mb = &pmb->mb;
1257
1258 switch (mb->mbxStatus) {
1259 case 0x0011:
1260 case 0x9601:
1261 case 0x9602:
1262 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1263 "0912 cmpl_reg_vpi, mb status = 0x%x\n",
1264 mb->mbxStatus);
1265 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1266 spin_lock_irq(shost->host_lock);
1267 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1268 spin_unlock_irq(shost->host_lock);
1269 vport->fc_myDID = 0;
1270 goto out;
1271 }
1272
1273 vport->num_disc_nodes = 0;
1274 /* go thru NPR list and issue ELS PLOGIs */
1275 if (vport->fc_npr_cnt)
1276 lpfc_els_disc_plogi(vport);
1277
1278 if (!vport->num_disc_nodes) {
1279 spin_lock_irq(shost->host_lock);
1280 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1281 spin_unlock_irq(shost->host_lock);
1282 lpfc_can_disctmo(vport);
1283 }
1284 vport->port_state = LPFC_VPORT_READY;
1285
1286 out:
1287 mempool_free(pmb, phba->mbox_mem_pool);
1288 return;
1289 }
1290
1291 /*
1292 * This routine handles processing a Fabric REG_LOGIN mailbox
1293 * command upon completion. It is setup in the LPFC_MBOXQ
1294 * as the completion routine when the command is
1295 * handed off to the SLI layer.
1296 */
1297 void
1298 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1299 {
1300 struct lpfc_vport *vport = pmb->vport;
1301 MAILBOX_t *mb = &pmb->mb;
1302 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1303 struct lpfc_nodelist *ndlp;
1304 struct lpfc_vport **vports;
1305 int i;
1306
1307 ndlp = (struct lpfc_nodelist *) pmb->context2;
1308 pmb->context1 = NULL;
1309 pmb->context2 = NULL;
1310 if (mb->mbxStatus) {
1311 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1312 kfree(mp);
1313 mempool_free(pmb, phba->mbox_mem_pool);
1314
1315 if (phba->fc_topology == TOPOLOGY_LOOP) {
1316 /* FLOGI failed, use loop map to make discovery list */
1317 lpfc_disc_list_loopmap(vport);
1318
1319 /* Start discovery */
1320 lpfc_disc_start(vport);
1321 /* Decrement the reference count to ndlp after the
1322 * reference to the ndlp are done.
1323 */
1324 lpfc_nlp_put(ndlp);
1325 return;
1326 }
1327
1328 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1329 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1330 "0258 Register Fabric login error: 0x%x\n",
1331 mb->mbxStatus);
1332 /* Decrement the reference count to ndlp after the reference
1333 * to the ndlp are done.
1334 */
1335 lpfc_nlp_put(ndlp);
1336 return;
1337 }
1338
1339 ndlp->nlp_rpi = mb->un.varWords[0];
1340 ndlp->nlp_type |= NLP_FABRIC;
1341 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1342
1343 if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
1344 vports = lpfc_create_vport_work_array(phba);
1345 if (vports != NULL)
1346 for(i = 0;
1347 i <= phba->max_vpi && vports[i] != NULL;
1348 i++) {
1349 if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
1350 continue;
1351 if (phba->fc_topology == TOPOLOGY_LOOP) {
1352 lpfc_vport_set_state(vports[i],
1353 FC_VPORT_LINKDOWN);
1354 continue;
1355 }
1356 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1357 lpfc_initial_fdisc(vports[i]);
1358 else {
1359 lpfc_vport_set_state(vports[i],
1360 FC_VPORT_NO_FABRIC_SUPP);
1361 lpfc_printf_vlog(vport, KERN_ERR,
1362 LOG_ELS,
1363 "0259 No NPIV "
1364 "Fabric support\n");
1365 }
1366 }
1367 lpfc_destroy_vport_work_array(phba, vports);
1368 lpfc_do_scr_ns_plogi(phba, vport);
1369 }
1370
1371 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1372 kfree(mp);
1373 mempool_free(pmb, phba->mbox_mem_pool);
1374
1375 /* Drop the reference count from the mbox at the end after
1376 * all the current reference to the ndlp have been done.
1377 */
1378 lpfc_nlp_put(ndlp);
1379 return;
1380 }
1381
1382 /*
1383 * This routine handles processing a NameServer REG_LOGIN mailbox
1384 * command upon completion. It is setup in the LPFC_MBOXQ
1385 * as the completion routine when the command is
1386 * handed off to the SLI layer.
1387 */
1388 void
1389 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1390 {
1391 MAILBOX_t *mb = &pmb->mb;
1392 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1393 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1394 struct lpfc_vport *vport = pmb->vport;
1395
1396 if (mb->mbxStatus) {
1397 out:
1398 /* decrement the node reference count held for this
1399 * callback function.
1400 */
1401 lpfc_nlp_put(ndlp);
1402 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1403 kfree(mp);
1404 mempool_free(pmb, phba->mbox_mem_pool);
1405
1406 /* If no other thread is using the ndlp, free it */
1407 lpfc_nlp_not_used(ndlp);
1408
1409 if (phba->fc_topology == TOPOLOGY_LOOP) {
1410 /*
1411 * RegLogin failed, use loop map to make discovery
1412 * list
1413 */
1414 lpfc_disc_list_loopmap(vport);
1415
1416 /* Start discovery */
1417 lpfc_disc_start(vport);
1418 return;
1419 }
1420 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1421 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1422 "0260 Register NameServer error: 0x%x\n",
1423 mb->mbxStatus);
1424 return;
1425 }
1426
1427 pmb->context1 = NULL;
1428
1429 ndlp->nlp_rpi = mb->un.varWords[0];
1430 ndlp->nlp_type |= NLP_FABRIC;
1431 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1432
1433 if (vport->port_state < LPFC_VPORT_READY) {
1434 /* Link up discovery requires Fabric registration. */
1435 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
1436 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
1437 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
1438 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
1439 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
1440
1441 /* Issue SCR just before NameServer GID_FT Query */
1442 lpfc_issue_els_scr(vport, SCR_DID, 0);
1443 }
1444
1445 vport->fc_ns_retry = 0;
1446 /* Good status, issue CT Request to NameServer */
1447 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
1448 /* Cannot issue NameServer Query, so finish up discovery */
1449 goto out;
1450 }
1451
1452 /* decrement the node reference count held for this
1453 * callback function.
1454 */
1455 lpfc_nlp_put(ndlp);
1456 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1457 kfree(mp);
1458 mempool_free(pmb, phba->mbox_mem_pool);
1459
1460 return;
1461 }
1462
1463 static void
1464 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1465 {
1466 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1467 struct fc_rport *rport;
1468 struct lpfc_rport_data *rdata;
1469 struct fc_rport_identifiers rport_ids;
1470 struct lpfc_hba *phba = vport->phba;
1471
1472 /* Remote port has reappeared. Re-register w/ FC transport */
1473 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
1474 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
1475 rport_ids.port_id = ndlp->nlp_DID;
1476 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1477
1478 /*
1479 * We leave our node pointer in rport->dd_data when we unregister a
1480 * FCP target port. But fc_remote_port_add zeros the space to which
1481 * rport->dd_data points. So, if we're reusing a previously
1482 * registered port, drop the reference that we took the last time we
1483 * registered the port.
1484 */
1485 if (ndlp->rport && ndlp->rport->dd_data &&
1486 ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
1487 lpfc_nlp_put(ndlp);
1488
1489 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
1490 "rport add: did:x%x flg:x%x type x%x",
1491 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1492
1493 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
1494 if (!rport || !get_device(&rport->dev)) {
1495 dev_printk(KERN_WARNING, &phba->pcidev->dev,
1496 "Warning: fc_remote_port_add failed\n");
1497 return;
1498 }
1499
1500 /* initialize static port data */
1501 rport->maxframe_size = ndlp->nlp_maxframe;
1502 rport->supported_classes = ndlp->nlp_class_sup;
1503 rdata = rport->dd_data;
1504 rdata->pnode = lpfc_nlp_get(ndlp);
1505
1506 if (ndlp->nlp_type & NLP_FCP_TARGET)
1507 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1508 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
1509 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
1510
1511
1512 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1513 fc_remote_port_rolechg(rport, rport_ids.roles);
1514
1515 if ((rport->scsi_target_id != -1) &&
1516 (rport->scsi_target_id < LPFC_MAX_TARGET)) {
1517 ndlp->nlp_sid = rport->scsi_target_id;
1518 }
1519 return;
1520 }
1521
1522 static void
1523 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
1524 {
1525 struct fc_rport *rport = ndlp->rport;
1526
1527 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
1528 "rport delete: did:x%x flg:x%x type x%x",
1529 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1530
1531 fc_remote_port_delete(rport);
1532
1533 return;
1534 }
1535
1536 static void
1537 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
1538 {
1539 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1540
1541 spin_lock_irq(shost->host_lock);
1542 switch (state) {
1543 case NLP_STE_UNUSED_NODE:
1544 vport->fc_unused_cnt += count;
1545 break;
1546 case NLP_STE_PLOGI_ISSUE:
1547 vport->fc_plogi_cnt += count;
1548 break;
1549 case NLP_STE_ADISC_ISSUE:
1550 vport->fc_adisc_cnt += count;
1551 break;
1552 case NLP_STE_REG_LOGIN_ISSUE:
1553 vport->fc_reglogin_cnt += count;
1554 break;
1555 case NLP_STE_PRLI_ISSUE:
1556 vport->fc_prli_cnt += count;
1557 break;
1558 case NLP_STE_UNMAPPED_NODE:
1559 vport->fc_unmap_cnt += count;
1560 break;
1561 case NLP_STE_MAPPED_NODE:
1562 vport->fc_map_cnt += count;
1563 break;
1564 case NLP_STE_NPR_NODE:
1565 vport->fc_npr_cnt += count;
1566 break;
1567 }
1568 spin_unlock_irq(shost->host_lock);
1569 }
1570
1571 static void
1572 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1573 int old_state, int new_state)
1574 {
1575 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1576
1577 if (new_state == NLP_STE_UNMAPPED_NODE) {
1578 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1579 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1580 ndlp->nlp_type |= NLP_FC_NODE;
1581 }
1582 if (new_state == NLP_STE_MAPPED_NODE)
1583 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1584 if (new_state == NLP_STE_NPR_NODE)
1585 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
1586
1587 /* Transport interface */
1588 if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
1589 old_state == NLP_STE_UNMAPPED_NODE)) {
1590 vport->phba->nport_event_cnt++;
1591 lpfc_unregister_remote_port(ndlp);
1592 }
1593
1594 if (new_state == NLP_STE_MAPPED_NODE ||
1595 new_state == NLP_STE_UNMAPPED_NODE) {
1596 vport->phba->nport_event_cnt++;
1597 /*
1598 * Tell the fc transport about the port, if we haven't
1599 * already. If we have, and it's a scsi entity, be
1600 * sure to unblock any attached scsi devices
1601 */
1602 lpfc_register_remote_port(vport, ndlp);
1603 }
1604 /*
1605 * if we added to Mapped list, but the remote port
1606 * registration failed or assigned a target id outside
1607 * our presentable range - move the node to the
1608 * Unmapped List
1609 */
1610 if (new_state == NLP_STE_MAPPED_NODE &&
1611 (!ndlp->rport ||
1612 ndlp->rport->scsi_target_id == -1 ||
1613 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
1614 spin_lock_irq(shost->host_lock);
1615 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
1616 spin_unlock_irq(shost->host_lock);
1617 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1618 }
1619 }
1620
1621 static char *
1622 lpfc_nlp_state_name(char *buffer, size_t size, int state)
1623 {
1624 static char *states[] = {
1625 [NLP_STE_UNUSED_NODE] = "UNUSED",
1626 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
1627 [NLP_STE_ADISC_ISSUE] = "ADISC",
1628 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
1629 [NLP_STE_PRLI_ISSUE] = "PRLI",
1630 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
1631 [NLP_STE_MAPPED_NODE] = "MAPPED",
1632 [NLP_STE_NPR_NODE] = "NPR",
1633 };
1634
1635 if (state < NLP_STE_MAX_STATE && states[state])
1636 strlcpy(buffer, states[state], size);
1637 else
1638 snprintf(buffer, size, "unknown (%d)", state);
1639 return buffer;
1640 }
1641
1642 void
1643 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1644 int state)
1645 {
1646 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1647 int old_state = ndlp->nlp_state;
1648 char name1[16], name2[16];
1649
1650 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1651 "0904 NPort state transition x%06x, %s -> %s\n",
1652 ndlp->nlp_DID,
1653 lpfc_nlp_state_name(name1, sizeof(name1), old_state),
1654 lpfc_nlp_state_name(name2, sizeof(name2), state));
1655
1656 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1657 "node statechg did:x%x old:%d ste:%d",
1658 ndlp->nlp_DID, old_state, state);
1659
1660 if (old_state == NLP_STE_NPR_NODE &&
1661 state != NLP_STE_NPR_NODE)
1662 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1663 if (old_state == NLP_STE_UNMAPPED_NODE) {
1664 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
1665 ndlp->nlp_type &= ~NLP_FC_NODE;
1666 }
1667
1668 if (list_empty(&ndlp->nlp_listp)) {
1669 spin_lock_irq(shost->host_lock);
1670 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1671 spin_unlock_irq(shost->host_lock);
1672 } else if (old_state)
1673 lpfc_nlp_counters(vport, old_state, -1);
1674
1675 ndlp->nlp_state = state;
1676 lpfc_nlp_counters(vport, state, 1);
1677 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
1678 }
1679
1680 void
1681 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1682 {
1683 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1684
1685 if (list_empty(&ndlp->nlp_listp)) {
1686 spin_lock_irq(shost->host_lock);
1687 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1688 spin_unlock_irq(shost->host_lock);
1689 }
1690 }
1691
1692 void
1693 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1694 {
1695 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1696
1697 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1698 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1699 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1700 spin_lock_irq(shost->host_lock);
1701 list_del_init(&ndlp->nlp_listp);
1702 spin_unlock_irq(shost->host_lock);
1703 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
1704 NLP_STE_UNUSED_NODE);
1705 }
1706
1707 static void
1708 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1709 {
1710 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1711 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1712 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1713 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
1714 NLP_STE_UNUSED_NODE);
1715 }
1716
1717 struct lpfc_nodelist *
1718 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1719 int state)
1720 {
1721 struct lpfc_hba *phba = vport->phba;
1722 uint32_t did;
1723 unsigned long flags;
1724
1725 if (!ndlp)
1726 return NULL;
1727
1728 spin_lock_irqsave(&phba->ndlp_lock, flags);
1729 /* The ndlp should not be in memory free mode */
1730 if (NLP_CHK_FREE_REQ(ndlp)) {
1731 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1732 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
1733 "0277 lpfc_enable_node: ndlp:x%p "
1734 "usgmap:x%x refcnt:%d\n",
1735 (void *)ndlp, ndlp->nlp_usg_map,
1736 atomic_read(&ndlp->kref.refcount));
1737 return NULL;
1738 }
1739 /* The ndlp should not already be in active mode */
1740 if (NLP_CHK_NODE_ACT(ndlp)) {
1741 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1742 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
1743 "0278 lpfc_enable_node: ndlp:x%p "
1744 "usgmap:x%x refcnt:%d\n",
1745 (void *)ndlp, ndlp->nlp_usg_map,
1746 atomic_read(&ndlp->kref.refcount));
1747 return NULL;
1748 }
1749
1750 /* Keep the original DID */
1751 did = ndlp->nlp_DID;
1752
1753 /* re-initialize ndlp except of ndlp linked list pointer */
1754 memset((((char *)ndlp) + sizeof (struct list_head)), 0,
1755 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
1756 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
1757 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
1758 init_timer(&ndlp->nlp_delayfunc);
1759 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
1760 ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
1761 ndlp->nlp_DID = did;
1762 ndlp->vport = vport;
1763 ndlp->nlp_sid = NLP_NO_SID;
1764 /* ndlp management re-initialize */
1765 kref_init(&ndlp->kref);
1766 NLP_INT_NODE_ACT(ndlp);
1767
1768 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1769
1770 if (state != NLP_STE_UNUSED_NODE)
1771 lpfc_nlp_set_state(vport, ndlp, state);
1772
1773 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1774 "node enable: did:x%x",
1775 ndlp->nlp_DID, 0, 0);
1776 return ndlp;
1777 }
1778
1779 void
1780 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1781 {
1782 /*
1783 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
1784 * be used if we wish to issue the "last" lpfc_nlp_put() to remove
1785 * the ndlp from the vport. The ndlp marked as UNUSED on the list
1786 * until ALL other outstanding threads have completed. We check
1787 * that the ndlp not already in the UNUSED state before we proceed.
1788 */
1789 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
1790 return;
1791 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
1792 lpfc_nlp_put(ndlp);
1793 return;
1794 }
1795
1796 /*
1797 * Start / ReStart rescue timer for Discovery / RSCN handling
1798 */
1799 void
1800 lpfc_set_disctmo(struct lpfc_vport *vport)
1801 {
1802 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1803 struct lpfc_hba *phba = vport->phba;
1804 uint32_t tmo;
1805
1806 if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
1807 /* For FAN, timeout should be greater then edtov */
1808 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
1809 } else {
1810 /* Normal discovery timeout should be > then ELS/CT timeout
1811 * FC spec states we need 3 * ratov for CT requests
1812 */
1813 tmo = ((phba->fc_ratov * 3) + 3);
1814 }
1815
1816
1817 if (!timer_pending(&vport->fc_disctmo)) {
1818 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1819 "set disc timer: tmo:x%x state:x%x flg:x%x",
1820 tmo, vport->port_state, vport->fc_flag);
1821 }
1822
1823 mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
1824 spin_lock_irq(shost->host_lock);
1825 vport->fc_flag |= FC_DISC_TMO;
1826 spin_unlock_irq(shost->host_lock);
1827
1828 /* Start Discovery Timer state <hba_state> */
1829 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1830 "0247 Start Discovery Timer state x%x "
1831 "Data: x%x x%lx x%x x%x\n",
1832 vport->port_state, tmo,
1833 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
1834 vport->fc_adisc_cnt);
1835
1836 return;
1837 }
1838
1839 /*
1840 * Cancel rescue timer for Discovery / RSCN handling
1841 */
1842 int
1843 lpfc_can_disctmo(struct lpfc_vport *vport)
1844 {
1845 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1846 unsigned long iflags;
1847
1848 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1849 "can disc timer: state:x%x rtry:x%x flg:x%x",
1850 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1851
1852 /* Turn off discovery timer if its running */
1853 if (vport->fc_flag & FC_DISC_TMO) {
1854 spin_lock_irqsave(shost->host_lock, iflags);
1855 vport->fc_flag &= ~FC_DISC_TMO;
1856 spin_unlock_irqrestore(shost->host_lock, iflags);
1857 del_timer_sync(&vport->fc_disctmo);
1858 spin_lock_irqsave(&vport->work_port_lock, iflags);
1859 vport->work_port_events &= ~WORKER_DISC_TMO;
1860 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
1861 }
1862
1863 /* Cancel Discovery Timer state <hba_state> */
1864 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1865 "0248 Cancel Discovery Timer state x%x "
1866 "Data: x%x x%x x%x\n",
1867 vport->port_state, vport->fc_flag,
1868 vport->fc_plogi_cnt, vport->fc_adisc_cnt);
1869 return 0;
1870 }
1871
1872 /*
1873 * Check specified ring for outstanding IOCB on the SLI queue
1874 * Return true if iocb matches the specified nport
1875 */
1876 int
1877 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
1878 struct lpfc_sli_ring *pring,
1879 struct lpfc_iocbq *iocb,
1880 struct lpfc_nodelist *ndlp)
1881 {
1882 struct lpfc_sli *psli = &phba->sli;
1883 IOCB_t *icmd = &iocb->iocb;
1884 struct lpfc_vport *vport = ndlp->vport;
1885
1886 if (iocb->vport != vport)
1887 return 0;
1888
1889 if (pring->ringno == LPFC_ELS_RING) {
1890 switch (icmd->ulpCommand) {
1891 case CMD_GEN_REQUEST64_CR:
1892 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi)
1893 return 1;
1894 case CMD_ELS_REQUEST64_CR:
1895 if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
1896 return 1;
1897 case CMD_XMIT_ELS_RSP64_CX:
1898 if (iocb->context1 == (uint8_t *) ndlp)
1899 return 1;
1900 }
1901 } else if (pring->ringno == psli->extra_ring) {
1902
1903 } else if (pring->ringno == psli->fcp_ring) {
1904 /* Skip match check if waiting to relogin to FCP target */
1905 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
1906 (ndlp->nlp_flag & NLP_DELAY_TMO)) {
1907 return 0;
1908 }
1909 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
1910 return 1;
1911 }
1912 } else if (pring->ringno == psli->next_ring) {
1913
1914 }
1915 return 0;
1916 }
1917
1918 /*
1919 * Free resources / clean up outstanding I/Os
1920 * associated with nlp_rpi in the LPFC_NODELIST entry.
1921 */
1922 static int
1923 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
1924 {
1925 LIST_HEAD(completions);
1926 struct lpfc_sli *psli;
1927 struct lpfc_sli_ring *pring;
1928 struct lpfc_iocbq *iocb, *next_iocb;
1929 IOCB_t *icmd;
1930 uint32_t rpi, i;
1931
1932 lpfc_fabric_abort_nport(ndlp);
1933
1934 /*
1935 * Everything that matches on txcmplq will be returned
1936 * by firmware with a no rpi error.
1937 */
1938 psli = &phba->sli;
1939 rpi = ndlp->nlp_rpi;
1940 if (rpi) {
1941 /* Now process each ring */
1942 for (i = 0; i < psli->num_rings; i++) {
1943 pring = &psli->ring[i];
1944
1945 spin_lock_irq(&phba->hbalock);
1946 list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
1947 list) {
1948 /*
1949 * Check to see if iocb matches the nport we are
1950 * looking for
1951 */
1952 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
1953 ndlp))) {
1954 /* It matches, so deque and call compl
1955 with an error */
1956 list_move_tail(&iocb->list,
1957 &completions);
1958 pring->txq_cnt--;
1959 }
1960 }
1961 spin_unlock_irq(&phba->hbalock);
1962 }
1963 }
1964
1965 while (!list_empty(&completions)) {
1966 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
1967 list_del_init(&iocb->list);
1968
1969 if (!iocb->iocb_cmpl)
1970 lpfc_sli_release_iocbq(phba, iocb);
1971 else {
1972 icmd = &iocb->iocb;
1973 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1974 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1975 (iocb->iocb_cmpl)(phba, iocb, iocb);
1976 }
1977 }
1978
1979 return 0;
1980 }
1981
1982 /*
1983 * Free rpi associated with LPFC_NODELIST entry.
1984 * This routine is called from lpfc_freenode(), when we are removing
1985 * a LPFC_NODELIST entry. It is also called if the driver initiates a
1986 * LOGO that completes successfully, and we are waiting to PLOGI back
1987 * to the remote NPort. In addition, it is called after we receive
1988 * and unsolicated ELS cmd, send back a rsp, the rsp completes and
1989 * we are waiting to PLOGI back to the remote NPort.
1990 */
1991 int
1992 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1993 {
1994 struct lpfc_hba *phba = vport->phba;
1995 LPFC_MBOXQ_t *mbox;
1996 int rc;
1997
1998 if (ndlp->nlp_rpi) {
1999 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2000 if (mbox) {
2001 lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
2002 mbox->vport = vport;
2003 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2004 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2005 if (rc == MBX_NOT_FINISHED)
2006 mempool_free(mbox, phba->mbox_mem_pool);
2007 }
2008 lpfc_no_rpi(phba, ndlp);
2009 ndlp->nlp_rpi = 0;
2010 return 1;
2011 }
2012 return 0;
2013 }
2014
2015 void
2016 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
2017 {
2018 struct lpfc_hba *phba = vport->phba;
2019 LPFC_MBOXQ_t *mbox;
2020 int rc;
2021
2022 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2023 if (mbox) {
2024 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
2025 mbox->vport = vport;
2026 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2027 mbox->context1 = NULL;
2028 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2029 if (rc == MBX_NOT_FINISHED) {
2030 mempool_free(mbox, phba->mbox_mem_pool);
2031 }
2032 }
2033 }
2034
2035 void
2036 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
2037 {
2038 struct lpfc_hba *phba = vport->phba;
2039 LPFC_MBOXQ_t *mbox;
2040 int rc;
2041
2042 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2043 if (mbox) {
2044 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
2045 mbox->vport = vport;
2046 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2047 mbox->context1 = NULL;
2048 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2049 if (rc == MBX_NOT_FINISHED) {
2050 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
2051 "1815 Could not issue "
2052 "unreg_did (default rpis)\n");
2053 mempool_free(mbox, phba->mbox_mem_pool);
2054 }
2055 }
2056 }
2057
2058 /*
2059 * Free resources associated with LPFC_NODELIST entry
2060 * so it can be freed.
2061 */
2062 static int
2063 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2064 {
2065 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2066 struct lpfc_hba *phba = vport->phba;
2067 LPFC_MBOXQ_t *mb, *nextmb;
2068 struct lpfc_dmabuf *mp;
2069
2070 /* Cleanup node for NPort <nlp_DID> */
2071 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2072 "0900 Cleanup node for NPort x%x "
2073 "Data: x%x x%x x%x\n",
2074 ndlp->nlp_DID, ndlp->nlp_flag,
2075 ndlp->nlp_state, ndlp->nlp_rpi);
2076 if (NLP_CHK_FREE_REQ(ndlp)) {
2077 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2078 "0280 lpfc_cleanup_node: ndlp:x%p "
2079 "usgmap:x%x refcnt:%d\n",
2080 (void *)ndlp, ndlp->nlp_usg_map,
2081 atomic_read(&ndlp->kref.refcount));
2082 lpfc_dequeue_node(vport, ndlp);
2083 } else {
2084 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2085 "0281 lpfc_cleanup_node: ndlp:x%p "
2086 "usgmap:x%x refcnt:%d\n",
2087 (void *)ndlp, ndlp->nlp_usg_map,
2088 atomic_read(&ndlp->kref.refcount));
2089 lpfc_disable_node(vport, ndlp);
2090 }
2091
2092 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
2093 if ((mb = phba->sli.mbox_active)) {
2094 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
2095 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
2096 mb->context2 = NULL;
2097 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2098 }
2099 }
2100
2101 spin_lock_irq(&phba->hbalock);
2102 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
2103 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
2104 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
2105 mp = (struct lpfc_dmabuf *) (mb->context1);
2106 if (mp) {
2107 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
2108 kfree(mp);
2109 }
2110 list_del(&mb->list);
2111 mempool_free(mb, phba->mbox_mem_pool);
2112 /* We shall not invoke the lpfc_nlp_put to decrement
2113 * the ndlp reference count as we are in the process
2114 * of lpfc_nlp_release.
2115 */
2116 }
2117 }
2118 spin_unlock_irq(&phba->hbalock);
2119
2120 lpfc_els_abort(phba, ndlp);
2121
2122 spin_lock_irq(shost->host_lock);
2123 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
2124 spin_unlock_irq(shost->host_lock);
2125
2126 ndlp->nlp_last_elscmd = 0;
2127 del_timer_sync(&ndlp->nlp_delayfunc);
2128
2129 list_del_init(&ndlp->els_retry_evt.evt_listp);
2130 list_del_init(&ndlp->dev_loss_evt.evt_listp);
2131
2132 lpfc_unreg_rpi(vport, ndlp);
2133
2134 return 0;
2135 }
2136
2137 /*
2138 * Check to see if we can free the nlp back to the freelist.
2139 * If we are in the middle of using the nlp in the discovery state
2140 * machine, defer the free till we reach the end of the state machine.
2141 */
2142 static void
2143 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2144 {
2145 struct lpfc_hba *phba = vport->phba;
2146 struct lpfc_rport_data *rdata;
2147 LPFC_MBOXQ_t *mbox;
2148 int rc;
2149
2150 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2151 if (ndlp->nlp_flag & NLP_DEFER_RM && !ndlp->nlp_rpi) {
2152 /* For this case we need to cleanup the default rpi
2153 * allocated by the firmware.
2154 */
2155 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
2156 != NULL) {
2157 rc = lpfc_reg_login(phba, vport->vpi, ndlp->nlp_DID,
2158 (uint8_t *) &vport->fc_sparam, mbox, 0);
2159 if (rc) {
2160 mempool_free(mbox, phba->mbox_mem_pool);
2161 }
2162 else {
2163 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
2164 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
2165 mbox->vport = vport;
2166 mbox->context2 = NULL;
2167 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2168 if (rc == MBX_NOT_FINISHED) {
2169 mempool_free(mbox, phba->mbox_mem_pool);
2170 }
2171 }
2172 }
2173 }
2174 lpfc_cleanup_node(vport, ndlp);
2175
2176 /*
2177 * We can get here with a non-NULL ndlp->rport because when we
2178 * unregister a rport we don't break the rport/node linkage. So if we
2179 * do, make sure we don't leaving any dangling pointers behind.
2180 */
2181 if (ndlp->rport) {
2182 rdata = ndlp->rport->dd_data;
2183 rdata->pnode = NULL;
2184 ndlp->rport = NULL;
2185 }
2186 }
2187
2188 static int
2189 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2190 uint32_t did)
2191 {
2192 D_ID mydid, ndlpdid, matchdid;
2193
2194 if (did == Bcast_DID)
2195 return 0;
2196
2197 /* First check for Direct match */
2198 if (ndlp->nlp_DID == did)
2199 return 1;
2200
2201 /* Next check for area/domain identically equals 0 match */
2202 mydid.un.word = vport->fc_myDID;
2203 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
2204 return 0;
2205 }
2206
2207 matchdid.un.word = did;
2208 ndlpdid.un.word = ndlp->nlp_DID;
2209 if (matchdid.un.b.id == ndlpdid.un.b.id) {
2210 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
2211 (mydid.un.b.area == matchdid.un.b.area)) {
2212 if ((ndlpdid.un.b.domain == 0) &&
2213 (ndlpdid.un.b.area == 0)) {
2214 if (ndlpdid.un.b.id)
2215 return 1;
2216 }
2217 return 0;
2218 }
2219
2220 matchdid.un.word = ndlp->nlp_DID;
2221 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
2222 (mydid.un.b.area == ndlpdid.un.b.area)) {
2223 if ((matchdid.un.b.domain == 0) &&
2224 (matchdid.un.b.area == 0)) {
2225 if (matchdid.un.b.id)
2226 return 1;
2227 }
2228 }
2229 }
2230 return 0;
2231 }
2232
2233 /* Search for a nodelist entry */
2234 static struct lpfc_nodelist *
2235 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2236 {
2237 struct lpfc_nodelist *ndlp;
2238 uint32_t data1;
2239
2240 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2241 if (lpfc_matchdid(vport, ndlp, did)) {
2242 data1 = (((uint32_t) ndlp->nlp_state << 24) |
2243 ((uint32_t) ndlp->nlp_xri << 16) |
2244 ((uint32_t) ndlp->nlp_type << 8) |
2245 ((uint32_t) ndlp->nlp_rpi & 0xff));
2246 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2247 "0929 FIND node DID "
2248 "Data: x%p x%x x%x x%x\n",
2249 ndlp, ndlp->nlp_DID,
2250 ndlp->nlp_flag, data1);
2251 return ndlp;
2252 }
2253 }
2254
2255 /* FIND node did <did> NOT FOUND */
2256 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2257 "0932 FIND node did x%x NOT FOUND.\n", did);
2258 return NULL;
2259 }
2260
2261 struct lpfc_nodelist *
2262 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2263 {
2264 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2265 struct lpfc_nodelist *ndlp;
2266
2267 spin_lock_irq(shost->host_lock);
2268 ndlp = __lpfc_findnode_did(vport, did);
2269 spin_unlock_irq(shost->host_lock);
2270 return ndlp;
2271 }
2272
2273 struct lpfc_nodelist *
2274 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
2275 {
2276 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2277 struct lpfc_nodelist *ndlp;
2278
2279 ndlp = lpfc_findnode_did(vport, did);
2280 if (!ndlp) {
2281 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
2282 lpfc_rscn_payload_check(vport, did) == 0)
2283 return NULL;
2284 ndlp = (struct lpfc_nodelist *)
2285 mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
2286 if (!ndlp)
2287 return NULL;
2288 lpfc_nlp_init(vport, ndlp, did);
2289 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2290 spin_lock_irq(shost->host_lock);
2291 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2292 spin_unlock_irq(shost->host_lock);
2293 return ndlp;
2294 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
2295 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
2296 if (!ndlp)
2297 return NULL;
2298 spin_lock_irq(shost->host_lock);
2299 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2300 spin_unlock_irq(shost->host_lock);
2301 return ndlp;
2302 }
2303
2304 if ((vport->fc_flag & FC_RSCN_MODE) &&
2305 !(vport->fc_flag & FC_NDISC_ACTIVE)) {
2306 if (lpfc_rscn_payload_check(vport, did)) {
2307 /* If we've already recieved a PLOGI from this NPort
2308 * we don't need to try to discover it again.
2309 */
2310 if (ndlp->nlp_flag & NLP_RCV_PLOGI)
2311 return NULL;
2312
2313 spin_lock_irq(shost->host_lock);
2314 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2315 spin_unlock_irq(shost->host_lock);
2316
2317 /* Since this node is marked for discovery,
2318 * delay timeout is not needed.
2319 */
2320 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2321 } else
2322 ndlp = NULL;
2323 } else {
2324 /* If we've already recieved a PLOGI from this NPort,
2325 * or we are already in the process of discovery on it,
2326 * we don't need to try to discover it again.
2327 */
2328 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
2329 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2330 ndlp->nlp_flag & NLP_RCV_PLOGI)
2331 return NULL;
2332 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2333 spin_lock_irq(shost->host_lock);
2334 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2335 spin_unlock_irq(shost->host_lock);
2336 }
2337 return ndlp;
2338 }
2339
2340 /* Build a list of nodes to discover based on the loopmap */
2341 void
2342 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
2343 {
2344 struct lpfc_hba *phba = vport->phba;
2345 int j;
2346 uint32_t alpa, index;
2347
2348 if (!lpfc_is_link_up(phba))
2349 return;
2350
2351 if (phba->fc_topology != TOPOLOGY_LOOP)
2352 return;
2353
2354 /* Check for loop map present or not */
2355 if (phba->alpa_map[0]) {
2356 for (j = 1; j <= phba->alpa_map[0]; j++) {
2357 alpa = phba->alpa_map[j];
2358 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
2359 continue;
2360 lpfc_setup_disc_node(vport, alpa);
2361 }
2362 } else {
2363 /* No alpamap, so try all alpa's */
2364 for (j = 0; j < FC_MAXLOOP; j++) {
2365 /* If cfg_scan_down is set, start from highest
2366 * ALPA (0xef) to lowest (0x1).
2367 */
2368 if (vport->cfg_scan_down)
2369 index = j;
2370 else
2371 index = FC_MAXLOOP - j - 1;
2372 alpa = lpfcAlpaArray[index];
2373 if ((vport->fc_myDID & 0xff) == alpa)
2374 continue;
2375 lpfc_setup_disc_node(vport, alpa);
2376 }
2377 }
2378 return;
2379 }
2380
2381 void
2382 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
2383 {
2384 LPFC_MBOXQ_t *mbox;
2385 struct lpfc_sli *psli = &phba->sli;
2386 struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
2387 struct lpfc_sli_ring *fcp_ring = &psli->ring[psli->fcp_ring];
2388 struct lpfc_sli_ring *next_ring = &psli->ring[psli->next_ring];
2389 int rc;
2390
2391 /*
2392 * if it's not a physical port or if we already send
2393 * clear_la then don't send it.
2394 */
2395 if ((phba->link_state >= LPFC_CLEAR_LA) ||
2396 (vport->port_type != LPFC_PHYSICAL_PORT))
2397 return;
2398
2399 /* Link up discovery */
2400 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
2401 phba->link_state = LPFC_CLEAR_LA;
2402 lpfc_clear_la(phba, mbox);
2403 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
2404 mbox->vport = vport;
2405 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2406 if (rc == MBX_NOT_FINISHED) {
2407 mempool_free(mbox, phba->mbox_mem_pool);
2408 lpfc_disc_flush_list(vport);
2409 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2410 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2411 next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2412 phba->link_state = LPFC_HBA_ERROR;
2413 }
2414 }
2415 }
2416
2417 /* Reg_vpi to tell firmware to resume normal operations */
2418 void
2419 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
2420 {
2421 LPFC_MBOXQ_t *regvpimbox;
2422
2423 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2424 if (regvpimbox) {
2425 lpfc_reg_vpi(phba, vport->vpi, vport->fc_myDID, regvpimbox);
2426 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
2427 regvpimbox->vport = vport;
2428 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
2429 == MBX_NOT_FINISHED) {
2430 mempool_free(regvpimbox, phba->mbox_mem_pool);
2431 }
2432 }
2433 }
2434
2435 /* Start Link up / RSCN discovery on NPR nodes */
2436 void
2437 lpfc_disc_start(struct lpfc_vport *vport)
2438 {
2439 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2440 struct lpfc_hba *phba = vport->phba;
2441 uint32_t num_sent;
2442 uint32_t clear_la_pending;
2443 int did_changed;
2444
2445 if (!lpfc_is_link_up(phba))
2446 return;
2447
2448 if (phba->link_state == LPFC_CLEAR_LA)
2449 clear_la_pending = 1;
2450 else
2451 clear_la_pending = 0;
2452
2453 if (vport->port_state < LPFC_VPORT_READY)
2454 vport->port_state = LPFC_DISC_AUTH;
2455
2456 lpfc_set_disctmo(vport);
2457
2458 if (vport->fc_prevDID == vport->fc_myDID)
2459 did_changed = 0;
2460 else
2461 did_changed = 1;
2462
2463 vport->fc_prevDID = vport->fc_myDID;
2464 vport->num_disc_nodes = 0;
2465
2466 /* Start Discovery state <hba_state> */
2467 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2468 "0202 Start Discovery hba state x%x "
2469 "Data: x%x x%x x%x\n",
2470 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
2471 vport->fc_adisc_cnt);
2472
2473 /* First do ADISCs - if any */
2474 num_sent = lpfc_els_disc_adisc(vport);
2475
2476 if (num_sent)
2477 return;
2478
2479 /*
2480 * For SLI3, cmpl_reg_vpi will set port_state to READY, and
2481 * continue discovery.
2482 */
2483 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2484 !(vport->fc_flag & FC_PT2PT) &&
2485 !(vport->fc_flag & FC_RSCN_MODE)) {
2486 lpfc_issue_reg_vpi(phba, vport);
2487 return;
2488 }
2489
2490 /*
2491 * For SLI2, we need to set port_state to READY and continue
2492 * discovery.
2493 */
2494 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
2495 /* If we get here, there is nothing to ADISC */
2496 if (vport->port_type == LPFC_PHYSICAL_PORT)
2497 lpfc_issue_clear_la(phba, vport);
2498
2499 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
2500 vport->num_disc_nodes = 0;
2501 /* go thru NPR nodes and issue ELS PLOGIs */
2502 if (vport->fc_npr_cnt)
2503 lpfc_els_disc_plogi(vport);
2504
2505 if (!vport->num_disc_nodes) {
2506 spin_lock_irq(shost->host_lock);
2507 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2508 spin_unlock_irq(shost->host_lock);
2509 lpfc_can_disctmo(vport);
2510 }
2511 }
2512 vport->port_state = LPFC_VPORT_READY;
2513 } else {
2514 /* Next do PLOGIs - if any */
2515 num_sent = lpfc_els_disc_plogi(vport);
2516
2517 if (num_sent)
2518 return;
2519
2520 if (vport->fc_flag & FC_RSCN_MODE) {
2521 /* Check to see if more RSCNs came in while we
2522 * were processing this one.
2523 */
2524 if ((vport->fc_rscn_id_cnt == 0) &&
2525 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
2526 spin_lock_irq(shost->host_lock);
2527 vport->fc_flag &= ~FC_RSCN_MODE;
2528 spin_unlock_irq(shost->host_lock);
2529 lpfc_can_disctmo(vport);
2530 } else
2531 lpfc_els_handle_rscn(vport);
2532 }
2533 }
2534 return;
2535 }
2536
2537 /*
2538 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS
2539 * ring the match the sppecified nodelist.
2540 */
2541 static void
2542 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
2543 {
2544 LIST_HEAD(completions);
2545 struct lpfc_sli *psli;
2546 IOCB_t *icmd;
2547 struct lpfc_iocbq *iocb, *next_iocb;
2548 struct lpfc_sli_ring *pring;
2549
2550 psli = &phba->sli;
2551 pring = &psli->ring[LPFC_ELS_RING];
2552
2553 /* Error matching iocb on txq or txcmplq
2554 * First check the txq.
2555 */
2556 spin_lock_irq(&phba->hbalock);
2557 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2558 if (iocb->context1 != ndlp) {
2559 continue;
2560 }
2561 icmd = &iocb->iocb;
2562 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
2563 (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
2564
2565 list_move_tail(&iocb->list, &completions);
2566 pring->txq_cnt--;
2567 }
2568 }
2569
2570 /* Next check the txcmplq */
2571 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
2572 if (iocb->context1 != ndlp) {
2573 continue;
2574 }
2575 icmd = &iocb->iocb;
2576 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
2577 icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
2578 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
2579 }
2580 }
2581 spin_unlock_irq(&phba->hbalock);
2582
2583 while (!list_empty(&completions)) {
2584 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
2585 list_del_init(&iocb->list);
2586
2587 if (!iocb->iocb_cmpl)
2588 lpfc_sli_release_iocbq(phba, iocb);
2589 else {
2590 icmd = &iocb->iocb;
2591 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2592 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
2593 (iocb->iocb_cmpl) (phba, iocb, iocb);
2594 }
2595 }
2596 }
2597
2598 static void
2599 lpfc_disc_flush_list(struct lpfc_vport *vport)
2600 {
2601 struct lpfc_nodelist *ndlp, *next_ndlp;
2602 struct lpfc_hba *phba = vport->phba;
2603
2604 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
2605 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2606 nlp_listp) {
2607 if (!NLP_CHK_NODE_ACT(ndlp))
2608 continue;
2609 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2610 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
2611 lpfc_free_tx(phba, ndlp);
2612 }
2613 }
2614 }
2615 }
2616
2617 void
2618 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
2619 {
2620 lpfc_els_flush_rscn(vport);
2621 lpfc_els_flush_cmd(vport);
2622 lpfc_disc_flush_list(vport);
2623 }
2624
2625 /*****************************************************************************/
2626 /*
2627 * NAME: lpfc_disc_timeout
2628 *
2629 * FUNCTION: Fibre Channel driver discovery timeout routine.
2630 *
2631 * EXECUTION ENVIRONMENT: interrupt only
2632 *
2633 * CALLED FROM:
2634 * Timer function
2635 *
2636 * RETURNS:
2637 * none
2638 */
2639 /*****************************************************************************/
2640 void
2641 lpfc_disc_timeout(unsigned long ptr)
2642 {
2643 struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
2644 struct lpfc_hba *phba = vport->phba;
2645 uint32_t tmo_posted;
2646 unsigned long flags = 0;
2647
2648 if (unlikely(!phba))
2649 return;
2650
2651 spin_lock_irqsave(&vport->work_port_lock, flags);
2652 tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
2653 if (!tmo_posted)
2654 vport->work_port_events |= WORKER_DISC_TMO;
2655 spin_unlock_irqrestore(&vport->work_port_lock, flags);
2656
2657 if (!tmo_posted)
2658 lpfc_worker_wake_up(phba);
2659 return;
2660 }
2661
2662 static void
2663 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
2664 {
2665 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2666 struct lpfc_hba *phba = vport->phba;
2667 struct lpfc_sli *psli = &phba->sli;
2668 struct lpfc_nodelist *ndlp, *next_ndlp;
2669 LPFC_MBOXQ_t *initlinkmbox;
2670 int rc, clrlaerr = 0;
2671
2672 if (!(vport->fc_flag & FC_DISC_TMO))
2673 return;
2674
2675 spin_lock_irq(shost->host_lock);
2676 vport->fc_flag &= ~FC_DISC_TMO;
2677 spin_unlock_irq(shost->host_lock);
2678
2679 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2680 "disc timeout: state:x%x rtry:x%x flg:x%x",
2681 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
2682
2683 switch (vport->port_state) {
2684
2685 case LPFC_LOCAL_CFG_LINK:
2686 /* port_state is identically LPFC_LOCAL_CFG_LINK while waiting for
2687 * FAN
2688 */
2689 /* FAN timeout */
2690 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
2691 "0221 FAN timeout\n");
2692 /* Start discovery by sending FLOGI, clean up old rpis */
2693 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2694 nlp_listp) {
2695 if (!NLP_CHK_NODE_ACT(ndlp))
2696 continue;
2697 if (ndlp->nlp_state != NLP_STE_NPR_NODE)
2698 continue;
2699 if (ndlp->nlp_type & NLP_FABRIC) {
2700 /* Clean up the ndlp on Fabric connections */
2701 lpfc_drop_node(vport, ndlp);
2702
2703 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2704 /* Fail outstanding IO now since device
2705 * is marked for PLOGI.
2706 */
2707 lpfc_unreg_rpi(vport, ndlp);
2708 }
2709 }
2710 if (vport->port_state != LPFC_FLOGI) {
2711 lpfc_initial_flogi(vport);
2712 return;
2713 }
2714 break;
2715
2716 case LPFC_FDISC:
2717 case LPFC_FLOGI:
2718 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
2719 /* Initial FLOGI timeout */
2720 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2721 "0222 Initial %s timeout\n",
2722 vport->vpi ? "FDISC" : "FLOGI");
2723
2724 /* Assume no Fabric and go on with discovery.
2725 * Check for outstanding ELS FLOGI to abort.
2726 */
2727
2728 /* FLOGI failed, so just use loop map to make discovery list */
2729 lpfc_disc_list_loopmap(vport);
2730
2731 /* Start discovery */
2732 lpfc_disc_start(vport);
2733 break;
2734
2735 case LPFC_FABRIC_CFG_LINK:
2736 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
2737 NameServer login */
2738 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2739 "0223 Timeout while waiting for "
2740 "NameServer login\n");
2741 /* Next look for NameServer ndlp */
2742 ndlp = lpfc_findnode_did(vport, NameServer_DID);
2743 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
2744 lpfc_els_abort(phba, ndlp);
2745
2746 /* ReStart discovery */
2747 goto restart_disc;
2748
2749 case LPFC_NS_QRY:
2750 /* Check for wait for NameServer Rsp timeout */
2751 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2752 "0224 NameServer Query timeout "
2753 "Data: x%x x%x\n",
2754 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2755
2756 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
2757 /* Try it one more time */
2758 vport->fc_ns_retry++;
2759 rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
2760 vport->fc_ns_retry, 0);
2761 if (rc == 0)
2762 break;
2763 }
2764 vport->fc_ns_retry = 0;
2765
2766 restart_disc:
2767 /*
2768 * Discovery is over.
2769 * set port_state to PORT_READY if SLI2.
2770 * cmpl_reg_vpi will set port_state to READY for SLI3.
2771 */
2772 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2773 lpfc_issue_reg_vpi(phba, vport);
2774 else { /* NPIV Not enabled */
2775 lpfc_issue_clear_la(phba, vport);
2776 vport->port_state = LPFC_VPORT_READY;
2777 }
2778
2779 /* Setup and issue mailbox INITIALIZE LINK command */
2780 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2781 if (!initlinkmbox) {
2782 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2783 "0206 Device Discovery "
2784 "completion error\n");
2785 phba->link_state = LPFC_HBA_ERROR;
2786 break;
2787 }
2788
2789 lpfc_linkdown(phba);
2790 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
2791 phba->cfg_link_speed);
2792 initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
2793 initlinkmbox->vport = vport;
2794 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2795 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
2796 lpfc_set_loopback_flag(phba);
2797 if (rc == MBX_NOT_FINISHED)
2798 mempool_free(initlinkmbox, phba->mbox_mem_pool);
2799
2800 break;
2801
2802 case LPFC_DISC_AUTH:
2803 /* Node Authentication timeout */
2804 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2805 "0227 Node Authentication timeout\n");
2806 lpfc_disc_flush_list(vport);
2807
2808 /*
2809 * set port_state to PORT_READY if SLI2.
2810 * cmpl_reg_vpi will set port_state to READY for SLI3.
2811 */
2812 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2813 lpfc_issue_reg_vpi(phba, vport);
2814 else { /* NPIV Not enabled */
2815 lpfc_issue_clear_la(phba, vport);
2816 vport->port_state = LPFC_VPORT_READY;
2817 }
2818 break;
2819
2820 case LPFC_VPORT_READY:
2821 if (vport->fc_flag & FC_RSCN_MODE) {
2822 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2823 "0231 RSCN timeout Data: x%x "
2824 "x%x\n",
2825 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2826
2827 /* Cleanup any outstanding ELS commands */
2828 lpfc_els_flush_cmd(vport);
2829
2830 lpfc_els_flush_rscn(vport);
2831 lpfc_disc_flush_list(vport);
2832 }
2833 break;
2834
2835 default:
2836 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2837 "0273 Unexpected discovery timeout, "
2838 "vport State x%x\n", vport->port_state);
2839 break;
2840 }
2841
2842 switch (phba->link_state) {
2843 case LPFC_CLEAR_LA:
2844 /* CLEAR LA timeout */
2845 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2846 "0228 CLEAR LA timeout\n");
2847 clrlaerr = 1;
2848 break;
2849
2850 case LPFC_LINK_UP:
2851 lpfc_issue_clear_la(phba, vport);
2852 /* Drop thru */
2853 case LPFC_LINK_UNKNOWN:
2854 case LPFC_WARM_START:
2855 case LPFC_INIT_START:
2856 case LPFC_INIT_MBX_CMDS:
2857 case LPFC_LINK_DOWN:
2858 case LPFC_HBA_ERROR:
2859 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2860 "0230 Unexpected timeout, hba link "
2861 "state x%x\n", phba->link_state);
2862 clrlaerr = 1;
2863 break;
2864
2865 case LPFC_HBA_READY:
2866 break;
2867 }
2868
2869 if (clrlaerr) {
2870 lpfc_disc_flush_list(vport);
2871 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2872 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2873 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2874 vport->port_state = LPFC_VPORT_READY;
2875 }
2876
2877 return;
2878 }
2879
2880 /*
2881 * This routine handles processing a NameServer REG_LOGIN mailbox
2882 * command upon completion. It is setup in the LPFC_MBOXQ
2883 * as the completion routine when the command is
2884 * handed off to the SLI layer.
2885 */
2886 void
2887 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2888 {
2889 MAILBOX_t *mb = &pmb->mb;
2890 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2891 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2892 struct lpfc_vport *vport = pmb->vport;
2893
2894 pmb->context1 = NULL;
2895
2896 ndlp->nlp_rpi = mb->un.varWords[0];
2897 ndlp->nlp_type |= NLP_FABRIC;
2898 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2899
2900 /*
2901 * Start issuing Fabric-Device Management Interface (FDMI) command to
2902 * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
2903 * fdmi-on=2 (supporting RPA/hostnmae)
2904 */
2905
2906 if (vport->cfg_fdmi_on == 1)
2907 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
2908 else
2909 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
2910
2911 /* decrement the node reference count held for this callback
2912 * function.
2913 */
2914 lpfc_nlp_put(ndlp);
2915 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2916 kfree(mp);
2917 mempool_free(pmb, phba->mbox_mem_pool);
2918
2919 return;
2920 }
2921
2922 static int
2923 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
2924 {
2925 uint16_t *rpi = param;
2926
2927 return ndlp->nlp_rpi == *rpi;
2928 }
2929
2930 static int
2931 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
2932 {
2933 return memcmp(&ndlp->nlp_portname, param,
2934 sizeof(ndlp->nlp_portname)) == 0;
2935 }
2936
2937 static struct lpfc_nodelist *
2938 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
2939 {
2940 struct lpfc_nodelist *ndlp;
2941
2942 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2943 if (filter(ndlp, param))
2944 return ndlp;
2945 }
2946 return NULL;
2947 }
2948
2949 /*
2950 * This routine looks up the ndlp lists for the given RPI. If rpi found it
2951 * returns the node list element pointer else return NULL.
2952 */
2953 struct lpfc_nodelist *
2954 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
2955 {
2956 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
2957 }
2958
2959 /*
2960 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
2961 * returns the node element list pointer else return NULL.
2962 */
2963 struct lpfc_nodelist *
2964 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
2965 {
2966 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2967 struct lpfc_nodelist *ndlp;
2968
2969 spin_lock_irq(shost->host_lock);
2970 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
2971 spin_unlock_irq(shost->host_lock);
2972 return ndlp;
2973 }
2974
2975 void
2976 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2977 uint32_t did)
2978 {
2979 memset(ndlp, 0, sizeof (struct lpfc_nodelist));
2980 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
2981 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
2982 init_timer(&ndlp->nlp_delayfunc);
2983 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
2984 ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
2985 ndlp->nlp_DID = did;
2986 ndlp->vport = vport;
2987 ndlp->nlp_sid = NLP_NO_SID;
2988 INIT_LIST_HEAD(&ndlp->nlp_listp);
2989 kref_init(&ndlp->kref);
2990 NLP_INT_NODE_ACT(ndlp);
2991
2992 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2993 "node init: did:x%x",
2994 ndlp->nlp_DID, 0, 0);
2995
2996 return;
2997 }
2998
2999 /* This routine releases all resources associated with a specifc NPort's ndlp
3000 * and mempool_free's the nodelist.
3001 */
3002 static void
3003 lpfc_nlp_release(struct kref *kref)
3004 {
3005 struct lpfc_hba *phba;
3006 unsigned long flags;
3007 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
3008 kref);
3009
3010 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3011 "node release: did:x%x flg:x%x type:x%x",
3012 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3013
3014 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
3015 "0279 lpfc_nlp_release: ndlp:x%p "
3016 "usgmap:x%x refcnt:%d\n",
3017 (void *)ndlp, ndlp->nlp_usg_map,
3018 atomic_read(&ndlp->kref.refcount));
3019
3020 /* remove ndlp from action. */
3021 lpfc_nlp_remove(ndlp->vport, ndlp);
3022
3023 /* clear the ndlp active flag for all release cases */
3024 phba = ndlp->vport->phba;
3025 spin_lock_irqsave(&phba->ndlp_lock, flags);
3026 NLP_CLR_NODE_ACT(ndlp);
3027 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3028
3029 /* free ndlp memory for final ndlp release */
3030 if (NLP_CHK_FREE_REQ(ndlp))
3031 mempool_free(ndlp, ndlp->vport->phba->nlp_mem_pool);
3032 }
3033
3034 /* This routine bumps the reference count for a ndlp structure to ensure
3035 * that one discovery thread won't free a ndlp while another discovery thread
3036 * is using it.
3037 */
3038 struct lpfc_nodelist *
3039 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
3040 {
3041 struct lpfc_hba *phba;
3042 unsigned long flags;
3043
3044 if (ndlp) {
3045 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3046 "node get: did:x%x flg:x%x refcnt:x%x",
3047 ndlp->nlp_DID, ndlp->nlp_flag,
3048 atomic_read(&ndlp->kref.refcount));
3049 /* The check of ndlp usage to prevent incrementing the
3050 * ndlp reference count that is in the process of being
3051 * released.
3052 */
3053 phba = ndlp->vport->phba;
3054 spin_lock_irqsave(&phba->ndlp_lock, flags);
3055 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
3056 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3057 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3058 "0276 lpfc_nlp_get: ndlp:x%p "
3059 "usgmap:x%x refcnt:%d\n",
3060 (void *)ndlp, ndlp->nlp_usg_map,
3061 atomic_read(&ndlp->kref.refcount));
3062 return NULL;
3063 } else
3064 kref_get(&ndlp->kref);
3065 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3066 }
3067 return ndlp;
3068 }
3069
3070 /* This routine decrements the reference count for a ndlp structure. If the
3071 * count goes to 0, this indicates the the associated nodelist should be
3072 * freed. Returning 1 indicates the ndlp resource has been released; on the
3073 * other hand, returning 0 indicates the ndlp resource has not been released
3074 * yet.
3075 */
3076 int
3077 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
3078 {
3079 struct lpfc_hba *phba;
3080 unsigned long flags;
3081
3082 if (!ndlp)
3083 return 1;
3084
3085 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3086 "node put: did:x%x flg:x%x refcnt:x%x",
3087 ndlp->nlp_DID, ndlp->nlp_flag,
3088 atomic_read(&ndlp->kref.refcount));
3089 phba = ndlp->vport->phba;
3090 spin_lock_irqsave(&phba->ndlp_lock, flags);
3091 /* Check the ndlp memory free acknowledge flag to avoid the
3092 * possible race condition that kref_put got invoked again
3093 * after previous one has done ndlp memory free.
3094 */
3095 if (NLP_CHK_FREE_ACK(ndlp)) {
3096 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3097 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3098 "0274 lpfc_nlp_put: ndlp:x%p "
3099 "usgmap:x%x refcnt:%d\n",
3100 (void *)ndlp, ndlp->nlp_usg_map,
3101 atomic_read(&ndlp->kref.refcount));
3102 return 1;
3103 }
3104 /* Check the ndlp inactivate log flag to avoid the possible
3105 * race condition that kref_put got invoked again after ndlp
3106 * is already in inactivating state.
3107 */
3108 if (NLP_CHK_IACT_REQ(ndlp)) {
3109 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3110 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3111 "0275 lpfc_nlp_put: ndlp:x%p "
3112 "usgmap:x%x refcnt:%d\n",
3113 (void *)ndlp, ndlp->nlp_usg_map,
3114 atomic_read(&ndlp->kref.refcount));
3115 return 1;
3116 }
3117 /* For last put, mark the ndlp usage flags to make sure no
3118 * other kref_get and kref_put on the same ndlp shall get
3119 * in between the process when the final kref_put has been
3120 * invoked on this ndlp.
3121 */
3122 if (atomic_read(&ndlp->kref.refcount) == 1) {
3123 /* Indicate ndlp is put to inactive state. */
3124 NLP_SET_IACT_REQ(ndlp);
3125 /* Acknowledge ndlp memory free has been seen. */
3126 if (NLP_CHK_FREE_REQ(ndlp))
3127 NLP_SET_FREE_ACK(ndlp);
3128 }
3129 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3130 /* Note, the kref_put returns 1 when decrementing a reference
3131 * count that was 1, it invokes the release callback function,
3132 * but it still left the reference count as 1 (not actually
3133 * performs the last decrementation). Otherwise, it actually
3134 * decrements the reference count and returns 0.
3135 */
3136 return kref_put(&ndlp->kref, lpfc_nlp_release);
3137 }
3138
3139 /* This routine free's the specified nodelist if it is not in use
3140 * by any other discovery thread. This routine returns 1 if the
3141 * ndlp has been freed. A return value of 0 indicates the ndlp is
3142 * not yet been released.
3143 */
3144 int
3145 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
3146 {
3147 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3148 "node not used: did:x%x flg:x%x refcnt:x%x",
3149 ndlp->nlp_DID, ndlp->nlp_flag,
3150 atomic_read(&ndlp->kref.refcount));
3151 if (atomic_read(&ndlp->kref.refcount) == 1)
3152 if (lpfc_nlp_put(ndlp))
3153 return 1;
3154 return 0;
3155 }
Support for the Chinese Samsung S3C2440 based development boards