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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-next-2.6
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / scsi / lpfc / lpfc_hbadisc.c
1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2009 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
6 * www.emulex.com *
7 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
8 * *
9 * This program is free software; you can redistribute it and/or *
10 * modify it under the terms of version 2 of the GNU General *
11 * Public License as published by the Free Software Foundation. *
12 * This program is distributed in the hope that it will be useful. *
13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
17 * TO BE LEGALLY INVALID. See the GNU General Public License for *
18 * more details, a copy of which can be found in the file COPYING *
19 * included with this package. *
20 *******************************************************************/
21
22 #include <linux/blkdev.h>
23 #include <linux/pci.h>
24 #include <linux/kthread.h>
25 #include <linux/interrupt.h>
26
27 #include <scsi/scsi.h>
28 #include <scsi/scsi_device.h>
29 #include <scsi/scsi_host.h>
30 #include <scsi/scsi_transport_fc.h>
31
32 #include "lpfc_hw4.h"
33 #include "lpfc_hw.h"
34 #include "lpfc_nl.h"
35 #include "lpfc_disc.h"
36 #include "lpfc_sli.h"
37 #include "lpfc_sli4.h"
38 #include "lpfc_scsi.h"
39 #include "lpfc.h"
40 #include "lpfc_logmsg.h"
41 #include "lpfc_crtn.h"
42 #include "lpfc_vport.h"
43 #include "lpfc_debugfs.h"
44
45 /* AlpaArray for assignment of scsid for scan-down and bind_method */
46 static uint8_t lpfcAlpaArray[] = {
47 0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
48 0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
49 0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
50 0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
51 0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
52 0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
53 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
54 0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
55 0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
56 0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
57 0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
58 0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
59 0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
60 };
61
62 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
63 static void lpfc_disc_flush_list(struct lpfc_vport *vport);
64 static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *);
65
66 void
67 lpfc_terminate_rport_io(struct fc_rport *rport)
68 {
69 struct lpfc_rport_data *rdata;
70 struct lpfc_nodelist * ndlp;
71 struct lpfc_hba *phba;
72
73 rdata = rport->dd_data;
74 ndlp = rdata->pnode;
75
76 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
77 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
78 printk(KERN_ERR "Cannot find remote node"
79 " to terminate I/O Data x%x\n",
80 rport->port_id);
81 return;
82 }
83
84 phba = ndlp->phba;
85
86 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
87 "rport terminate: sid:x%x did:x%x flg:x%x",
88 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
89
90 if (ndlp->nlp_sid != NLP_NO_SID) {
91 lpfc_sli_abort_iocb(ndlp->vport,
92 &phba->sli.ring[phba->sli.fcp_ring],
93 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
94 }
95 }
96
97 /*
98 * This function will be called when dev_loss_tmo fire.
99 */
100 void
101 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
102 {
103 struct lpfc_rport_data *rdata;
104 struct lpfc_nodelist * ndlp;
105 struct lpfc_vport *vport;
106 struct lpfc_hba *phba;
107 struct lpfc_work_evt *evtp;
108 int put_node;
109 int put_rport;
110
111 rdata = rport->dd_data;
112 ndlp = rdata->pnode;
113 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
114 return;
115
116 vport = ndlp->vport;
117 phba = vport->phba;
118
119 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
120 "rport devlosscb: sid:x%x did:x%x flg:x%x",
121 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
122
123 /* Don't defer this if we are in the process of deleting the vport
124 * or unloading the driver. The unload will cleanup the node
125 * appropriately we just need to cleanup the ndlp rport info here.
126 */
127 if (vport->load_flag & FC_UNLOADING) {
128 put_node = rdata->pnode != NULL;
129 put_rport = ndlp->rport != NULL;
130 rdata->pnode = NULL;
131 ndlp->rport = NULL;
132 if (put_node)
133 lpfc_nlp_put(ndlp);
134 if (put_rport)
135 put_device(&rport->dev);
136 return;
137 }
138
139 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
140 return;
141
142 evtp = &ndlp->dev_loss_evt;
143
144 if (!list_empty(&evtp->evt_listp))
145 return;
146
147 spin_lock_irq(&phba->hbalock);
148 /* We need to hold the node by incrementing the reference
149 * count until this queued work is done
150 */
151 evtp->evt_arg1 = lpfc_nlp_get(ndlp);
152 if (evtp->evt_arg1) {
153 evtp->evt = LPFC_EVT_DEV_LOSS;
154 list_add_tail(&evtp->evt_listp, &phba->work_list);
155 lpfc_worker_wake_up(phba);
156 }
157 spin_unlock_irq(&phba->hbalock);
158
159 return;
160 }
161
162 /*
163 * This function is called from the worker thread when dev_loss_tmo
164 * expire.
165 */
166 static void
167 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
168 {
169 struct lpfc_rport_data *rdata;
170 struct fc_rport *rport;
171 struct lpfc_vport *vport;
172 struct lpfc_hba *phba;
173 uint8_t *name;
174 int put_node;
175 int put_rport;
176 int warn_on = 0;
177
178 rport = ndlp->rport;
179
180 if (!rport)
181 return;
182
183 rdata = rport->dd_data;
184 name = (uint8_t *) &ndlp->nlp_portname;
185 vport = ndlp->vport;
186 phba = vport->phba;
187
188 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
189 "rport devlosstmo:did:x%x type:x%x id:x%x",
190 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
191
192 /* Don't defer this if we are in the process of deleting the vport
193 * or unloading the driver. The unload will cleanup the node
194 * appropriately we just need to cleanup the ndlp rport info here.
195 */
196 if (vport->load_flag & FC_UNLOADING) {
197 if (ndlp->nlp_sid != NLP_NO_SID) {
198 /* flush the target */
199 lpfc_sli_abort_iocb(vport,
200 &phba->sli.ring[phba->sli.fcp_ring],
201 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
202 }
203 put_node = rdata->pnode != NULL;
204 put_rport = ndlp->rport != NULL;
205 rdata->pnode = NULL;
206 ndlp->rport = NULL;
207 if (put_node)
208 lpfc_nlp_put(ndlp);
209 if (put_rport)
210 put_device(&rport->dev);
211 return;
212 }
213
214 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
215 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
216 "0284 Devloss timeout Ignored on "
217 "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
218 "NPort x%x\n",
219 *name, *(name+1), *(name+2), *(name+3),
220 *(name+4), *(name+5), *(name+6), *(name+7),
221 ndlp->nlp_DID);
222 return;
223 }
224
225 if (ndlp->nlp_type & NLP_FABRIC) {
226 /* We will clean up these Nodes in linkup */
227 put_node = rdata->pnode != NULL;
228 put_rport = ndlp->rport != NULL;
229 rdata->pnode = NULL;
230 ndlp->rport = NULL;
231 if (put_node)
232 lpfc_nlp_put(ndlp);
233 if (put_rport)
234 put_device(&rport->dev);
235 return;
236 }
237
238 if (ndlp->nlp_sid != NLP_NO_SID) {
239 warn_on = 1;
240 /* flush the target */
241 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
242 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
243 }
244
245 if (warn_on) {
246 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
247 "0203 Devloss timeout on "
248 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
249 "NPort x%06x Data: x%x x%x x%x\n",
250 *name, *(name+1), *(name+2), *(name+3),
251 *(name+4), *(name+5), *(name+6), *(name+7),
252 ndlp->nlp_DID, ndlp->nlp_flag,
253 ndlp->nlp_state, ndlp->nlp_rpi);
254 } else {
255 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
256 "0204 Devloss timeout on "
257 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
258 "NPort x%06x Data: x%x x%x x%x\n",
259 *name, *(name+1), *(name+2), *(name+3),
260 *(name+4), *(name+5), *(name+6), *(name+7),
261 ndlp->nlp_DID, ndlp->nlp_flag,
262 ndlp->nlp_state, ndlp->nlp_rpi);
263 }
264
265 put_node = rdata->pnode != NULL;
266 put_rport = ndlp->rport != NULL;
267 rdata->pnode = NULL;
268 ndlp->rport = NULL;
269 if (put_node)
270 lpfc_nlp_put(ndlp);
271 if (put_rport)
272 put_device(&rport->dev);
273
274 if (!(vport->load_flag & FC_UNLOADING) &&
275 !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
276 !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
277 (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE))
278 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
279
280 lpfc_unregister_unused_fcf(phba);
281 }
282
283 /**
284 * lpfc_alloc_fast_evt - Allocates data structure for posting event
285 * @phba: Pointer to hba context object.
286 *
287 * This function is called from the functions which need to post
288 * events from interrupt context. This function allocates data
289 * structure required for posting event. It also keeps track of
290 * number of events pending and prevent event storm when there are
291 * too many events.
292 **/
293 struct lpfc_fast_path_event *
294 lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
295 struct lpfc_fast_path_event *ret;
296
297 /* If there are lot of fast event do not exhaust memory due to this */
298 if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
299 return NULL;
300
301 ret = kzalloc(sizeof(struct lpfc_fast_path_event),
302 GFP_ATOMIC);
303 if (ret) {
304 atomic_inc(&phba->fast_event_count);
305 INIT_LIST_HEAD(&ret->work_evt.evt_listp);
306 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
307 }
308 return ret;
309 }
310
311 /**
312 * lpfc_free_fast_evt - Frees event data structure
313 * @phba: Pointer to hba context object.
314 * @evt: Event object which need to be freed.
315 *
316 * This function frees the data structure required for posting
317 * events.
318 **/
319 void
320 lpfc_free_fast_evt(struct lpfc_hba *phba,
321 struct lpfc_fast_path_event *evt) {
322
323 atomic_dec(&phba->fast_event_count);
324 kfree(evt);
325 }
326
327 /**
328 * lpfc_send_fastpath_evt - Posts events generated from fast path
329 * @phba: Pointer to hba context object.
330 * @evtp: Event data structure.
331 *
332 * This function is called from worker thread, when the interrupt
333 * context need to post an event. This function posts the event
334 * to fc transport netlink interface.
335 **/
336 static void
337 lpfc_send_fastpath_evt(struct lpfc_hba *phba,
338 struct lpfc_work_evt *evtp)
339 {
340 unsigned long evt_category, evt_sub_category;
341 struct lpfc_fast_path_event *fast_evt_data;
342 char *evt_data;
343 uint32_t evt_data_size;
344 struct Scsi_Host *shost;
345
346 fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
347 work_evt);
348
349 evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
350 evt_sub_category = (unsigned long) fast_evt_data->un.
351 fabric_evt.subcategory;
352 shost = lpfc_shost_from_vport(fast_evt_data->vport);
353 if (evt_category == FC_REG_FABRIC_EVENT) {
354 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
355 evt_data = (char *) &fast_evt_data->un.read_check_error;
356 evt_data_size = sizeof(fast_evt_data->un.
357 read_check_error);
358 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
359 (evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
360 evt_data = (char *) &fast_evt_data->un.fabric_evt;
361 evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
362 } else {
363 lpfc_free_fast_evt(phba, fast_evt_data);
364 return;
365 }
366 } else if (evt_category == FC_REG_SCSI_EVENT) {
367 switch (evt_sub_category) {
368 case LPFC_EVENT_QFULL:
369 case LPFC_EVENT_DEVBSY:
370 evt_data = (char *) &fast_evt_data->un.scsi_evt;
371 evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
372 break;
373 case LPFC_EVENT_CHECK_COND:
374 evt_data = (char *) &fast_evt_data->un.check_cond_evt;
375 evt_data_size = sizeof(fast_evt_data->un.
376 check_cond_evt);
377 break;
378 case LPFC_EVENT_VARQUEDEPTH:
379 evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
380 evt_data_size = sizeof(fast_evt_data->un.
381 queue_depth_evt);
382 break;
383 default:
384 lpfc_free_fast_evt(phba, fast_evt_data);
385 return;
386 }
387 } else {
388 lpfc_free_fast_evt(phba, fast_evt_data);
389 return;
390 }
391
392 fc_host_post_vendor_event(shost,
393 fc_get_event_number(),
394 evt_data_size,
395 evt_data,
396 LPFC_NL_VENDOR_ID);
397
398 lpfc_free_fast_evt(phba, fast_evt_data);
399 return;
400 }
401
402 static void
403 lpfc_work_list_done(struct lpfc_hba *phba)
404 {
405 struct lpfc_work_evt *evtp = NULL;
406 struct lpfc_nodelist *ndlp;
407 int free_evt;
408
409 spin_lock_irq(&phba->hbalock);
410 while (!list_empty(&phba->work_list)) {
411 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
412 evt_listp);
413 spin_unlock_irq(&phba->hbalock);
414 free_evt = 1;
415 switch (evtp->evt) {
416 case LPFC_EVT_ELS_RETRY:
417 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
418 lpfc_els_retry_delay_handler(ndlp);
419 free_evt = 0; /* evt is part of ndlp */
420 /* decrement the node reference count held
421 * for this queued work
422 */
423 lpfc_nlp_put(ndlp);
424 break;
425 case LPFC_EVT_DEV_LOSS:
426 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
427 lpfc_dev_loss_tmo_handler(ndlp);
428 free_evt = 0;
429 /* decrement the node reference count held for
430 * this queued work
431 */
432 lpfc_nlp_put(ndlp);
433 break;
434 case LPFC_EVT_ONLINE:
435 if (phba->link_state < LPFC_LINK_DOWN)
436 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
437 else
438 *(int *) (evtp->evt_arg1) = 0;
439 complete((struct completion *)(evtp->evt_arg2));
440 break;
441 case LPFC_EVT_OFFLINE_PREP:
442 if (phba->link_state >= LPFC_LINK_DOWN)
443 lpfc_offline_prep(phba);
444 *(int *)(evtp->evt_arg1) = 0;
445 complete((struct completion *)(evtp->evt_arg2));
446 break;
447 case LPFC_EVT_OFFLINE:
448 lpfc_offline(phba);
449 lpfc_sli_brdrestart(phba);
450 *(int *)(evtp->evt_arg1) =
451 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
452 lpfc_unblock_mgmt_io(phba);
453 complete((struct completion *)(evtp->evt_arg2));
454 break;
455 case LPFC_EVT_WARM_START:
456 lpfc_offline(phba);
457 lpfc_reset_barrier(phba);
458 lpfc_sli_brdreset(phba);
459 lpfc_hba_down_post(phba);
460 *(int *)(evtp->evt_arg1) =
461 lpfc_sli_brdready(phba, HS_MBRDY);
462 lpfc_unblock_mgmt_io(phba);
463 complete((struct completion *)(evtp->evt_arg2));
464 break;
465 case LPFC_EVT_KILL:
466 lpfc_offline(phba);
467 *(int *)(evtp->evt_arg1)
468 = (phba->pport->stopped)
469 ? 0 : lpfc_sli_brdkill(phba);
470 lpfc_unblock_mgmt_io(phba);
471 complete((struct completion *)(evtp->evt_arg2));
472 break;
473 case LPFC_EVT_FASTPATH_MGMT_EVT:
474 lpfc_send_fastpath_evt(phba, evtp);
475 free_evt = 0;
476 break;
477 }
478 if (free_evt)
479 kfree(evtp);
480 spin_lock_irq(&phba->hbalock);
481 }
482 spin_unlock_irq(&phba->hbalock);
483
484 }
485
486 static void
487 lpfc_work_done(struct lpfc_hba *phba)
488 {
489 struct lpfc_sli_ring *pring;
490 uint32_t ha_copy, status, control, work_port_events;
491 struct lpfc_vport **vports;
492 struct lpfc_vport *vport;
493 int i;
494
495 spin_lock_irq(&phba->hbalock);
496 ha_copy = phba->work_ha;
497 phba->work_ha = 0;
498 spin_unlock_irq(&phba->hbalock);
499
500 /* First, try to post the next mailbox command to SLI4 device */
501 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC)
502 lpfc_sli4_post_async_mbox(phba);
503
504 if (ha_copy & HA_ERATT)
505 /* Handle the error attention event */
506 lpfc_handle_eratt(phba);
507
508 if (ha_copy & HA_MBATT)
509 lpfc_sli_handle_mb_event(phba);
510
511 if (ha_copy & HA_LATT)
512 lpfc_handle_latt(phba);
513
514 /* Process SLI4 events */
515 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
516 if (phba->hba_flag & FCP_XRI_ABORT_EVENT)
517 lpfc_sli4_fcp_xri_abort_event_proc(phba);
518 if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
519 lpfc_sli4_els_xri_abort_event_proc(phba);
520 if (phba->hba_flag & ASYNC_EVENT)
521 lpfc_sli4_async_event_proc(phba);
522 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
523 spin_lock_irq(&phba->hbalock);
524 phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
525 spin_unlock_irq(&phba->hbalock);
526 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
527 }
528 if (phba->fcf.fcf_flag & FCF_REDISC_EVT)
529 lpfc_sli4_fcf_redisc_event_proc(phba);
530 }
531
532 vports = lpfc_create_vport_work_array(phba);
533 if (vports != NULL)
534 for (i = 0; i <= phba->max_vports; i++) {
535 /*
536 * We could have no vports in array if unloading, so if
537 * this happens then just use the pport
538 */
539 if (vports[i] == NULL && i == 0)
540 vport = phba->pport;
541 else
542 vport = vports[i];
543 if (vport == NULL)
544 break;
545 spin_lock_irq(&vport->work_port_lock);
546 work_port_events = vport->work_port_events;
547 vport->work_port_events &= ~work_port_events;
548 spin_unlock_irq(&vport->work_port_lock);
549 if (work_port_events & WORKER_DISC_TMO)
550 lpfc_disc_timeout_handler(vport);
551 if (work_port_events & WORKER_ELS_TMO)
552 lpfc_els_timeout_handler(vport);
553 if (work_port_events & WORKER_HB_TMO)
554 lpfc_hb_timeout_handler(phba);
555 if (work_port_events & WORKER_MBOX_TMO)
556 lpfc_mbox_timeout_handler(phba);
557 if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
558 lpfc_unblock_fabric_iocbs(phba);
559 if (work_port_events & WORKER_FDMI_TMO)
560 lpfc_fdmi_timeout_handler(vport);
561 if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
562 lpfc_ramp_down_queue_handler(phba);
563 if (work_port_events & WORKER_RAMP_UP_QUEUE)
564 lpfc_ramp_up_queue_handler(phba);
565 }
566 lpfc_destroy_vport_work_array(phba, vports);
567
568 pring = &phba->sli.ring[LPFC_ELS_RING];
569 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING)));
570 status >>= (4*LPFC_ELS_RING);
571 if ((status & HA_RXMASK) ||
572 (pring->flag & LPFC_DEFERRED_RING_EVENT) ||
573 (phba->hba_flag & HBA_SP_QUEUE_EVT)) {
574 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
575 pring->flag |= LPFC_DEFERRED_RING_EVENT;
576 /* Set the lpfc data pending flag */
577 set_bit(LPFC_DATA_READY, &phba->data_flags);
578 } else {
579 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
580 lpfc_sli_handle_slow_ring_event(phba, pring,
581 (status &
582 HA_RXMASK));
583 }
584 /*
585 * Turn on Ring interrupts
586 */
587 if (phba->sli_rev <= LPFC_SLI_REV3) {
588 spin_lock_irq(&phba->hbalock);
589 control = readl(phba->HCregaddr);
590 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
591 lpfc_debugfs_slow_ring_trc(phba,
592 "WRK Enable ring: cntl:x%x hacopy:x%x",
593 control, ha_copy, 0);
594
595 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
596 writel(control, phba->HCregaddr);
597 readl(phba->HCregaddr); /* flush */
598 } else {
599 lpfc_debugfs_slow_ring_trc(phba,
600 "WRK Ring ok: cntl:x%x hacopy:x%x",
601 control, ha_copy, 0);
602 }
603 spin_unlock_irq(&phba->hbalock);
604 }
605 }
606 lpfc_work_list_done(phba);
607 }
608
609 int
610 lpfc_do_work(void *p)
611 {
612 struct lpfc_hba *phba = p;
613 int rc;
614
615 set_user_nice(current, -20);
616 phba->data_flags = 0;
617
618 while (!kthread_should_stop()) {
619 /* wait and check worker queue activities */
620 rc = wait_event_interruptible(phba->work_waitq,
621 (test_and_clear_bit(LPFC_DATA_READY,
622 &phba->data_flags)
623 || kthread_should_stop()));
624 /* Signal wakeup shall terminate the worker thread */
625 if (rc) {
626 lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
627 "0433 Wakeup on signal: rc=x%x\n", rc);
628 break;
629 }
630
631 /* Attend pending lpfc data processing */
632 lpfc_work_done(phba);
633 }
634 phba->worker_thread = NULL;
635 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
636 "0432 Worker thread stopped.\n");
637 return 0;
638 }
639
640 /*
641 * This is only called to handle FC worker events. Since this a rare
642 * occurance, we allocate a struct lpfc_work_evt structure here instead of
643 * embedding it in the IOCB.
644 */
645 int
646 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
647 uint32_t evt)
648 {
649 struct lpfc_work_evt *evtp;
650 unsigned long flags;
651
652 /*
653 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
654 * be queued to worker thread for processing
655 */
656 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
657 if (!evtp)
658 return 0;
659
660 evtp->evt_arg1 = arg1;
661 evtp->evt_arg2 = arg2;
662 evtp->evt = evt;
663
664 spin_lock_irqsave(&phba->hbalock, flags);
665 list_add_tail(&evtp->evt_listp, &phba->work_list);
666 spin_unlock_irqrestore(&phba->hbalock, flags);
667
668 lpfc_worker_wake_up(phba);
669
670 return 1;
671 }
672
673 void
674 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
675 {
676 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
677 struct lpfc_hba *phba = vport->phba;
678 struct lpfc_nodelist *ndlp, *next_ndlp;
679 int rc;
680
681 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
682 if (!NLP_CHK_NODE_ACT(ndlp))
683 continue;
684 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
685 continue;
686 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
687 ((vport->port_type == LPFC_NPIV_PORT) &&
688 (ndlp->nlp_DID == NameServer_DID)))
689 lpfc_unreg_rpi(vport, ndlp);
690
691 /* Leave Fabric nodes alone on link down */
692 if ((phba->sli_rev < LPFC_SLI_REV4) &&
693 (!remove && ndlp->nlp_type & NLP_FABRIC))
694 continue;
695 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
696 remove
697 ? NLP_EVT_DEVICE_RM
698 : NLP_EVT_DEVICE_RECOVERY);
699 }
700 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
701 lpfc_mbx_unreg_vpi(vport);
702 spin_lock_irq(shost->host_lock);
703 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
704 spin_unlock_irq(shost->host_lock);
705 }
706 }
707
708 void
709 lpfc_port_link_failure(struct lpfc_vport *vport)
710 {
711 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
712
713 /* Cleanup any outstanding received buffers */
714 lpfc_cleanup_rcv_buffers(vport);
715
716 /* Cleanup any outstanding RSCN activity */
717 lpfc_els_flush_rscn(vport);
718
719 /* Cleanup any outstanding ELS commands */
720 lpfc_els_flush_cmd(vport);
721
722 lpfc_cleanup_rpis(vport, 0);
723
724 /* Turn off discovery timer if its running */
725 lpfc_can_disctmo(vport);
726 }
727
728 void
729 lpfc_linkdown_port(struct lpfc_vport *vport)
730 {
731 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
732
733 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
734
735 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
736 "Link Down: state:x%x rtry:x%x flg:x%x",
737 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
738
739 lpfc_port_link_failure(vport);
740
741 }
742
743 int
744 lpfc_linkdown(struct lpfc_hba *phba)
745 {
746 struct lpfc_vport *vport = phba->pport;
747 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
748 struct lpfc_vport **vports;
749 LPFC_MBOXQ_t *mb;
750 int i;
751
752 if (phba->link_state == LPFC_LINK_DOWN)
753 return 0;
754
755 /* Block all SCSI stack I/Os */
756 lpfc_scsi_dev_block(phba);
757
758 spin_lock_irq(&phba->hbalock);
759 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
760 spin_unlock_irq(&phba->hbalock);
761 if (phba->link_state > LPFC_LINK_DOWN) {
762 phba->link_state = LPFC_LINK_DOWN;
763 spin_lock_irq(shost->host_lock);
764 phba->pport->fc_flag &= ~FC_LBIT;
765 spin_unlock_irq(shost->host_lock);
766 }
767 vports = lpfc_create_vport_work_array(phba);
768 if (vports != NULL)
769 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
770 /* Issue a LINK DOWN event to all nodes */
771 lpfc_linkdown_port(vports[i]);
772 }
773 lpfc_destroy_vport_work_array(phba, vports);
774 /* Clean up any firmware default rpi's */
775 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
776 if (mb) {
777 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
778 mb->vport = vport;
779 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
780 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
781 == MBX_NOT_FINISHED) {
782 mempool_free(mb, phba->mbox_mem_pool);
783 }
784 }
785
786 /* Setup myDID for link up if we are in pt2pt mode */
787 if (phba->pport->fc_flag & FC_PT2PT) {
788 phba->pport->fc_myDID = 0;
789 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
790 if (mb) {
791 lpfc_config_link(phba, mb);
792 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
793 mb->vport = vport;
794 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
795 == MBX_NOT_FINISHED) {
796 mempool_free(mb, phba->mbox_mem_pool);
797 }
798 }
799 spin_lock_irq(shost->host_lock);
800 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
801 spin_unlock_irq(shost->host_lock);
802 }
803
804 return 0;
805 }
806
807 static void
808 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
809 {
810 struct lpfc_nodelist *ndlp;
811
812 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
813 if (!NLP_CHK_NODE_ACT(ndlp))
814 continue;
815 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
816 continue;
817 if (ndlp->nlp_type & NLP_FABRIC) {
818 /* On Linkup its safe to clean up the ndlp
819 * from Fabric connections.
820 */
821 if (ndlp->nlp_DID != Fabric_DID)
822 lpfc_unreg_rpi(vport, ndlp);
823 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
824 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
825 /* Fail outstanding IO now since device is
826 * marked for PLOGI.
827 */
828 lpfc_unreg_rpi(vport, ndlp);
829 }
830 }
831 }
832
833 static void
834 lpfc_linkup_port(struct lpfc_vport *vport)
835 {
836 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
837 struct lpfc_hba *phba = vport->phba;
838
839 if ((vport->load_flag & FC_UNLOADING) != 0)
840 return;
841
842 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
843 "Link Up: top:x%x speed:x%x flg:x%x",
844 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
845
846 /* If NPIV is not enabled, only bring the physical port up */
847 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
848 (vport != phba->pport))
849 return;
850
851 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
852
853 spin_lock_irq(shost->host_lock);
854 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
855 FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
856 vport->fc_flag |= FC_NDISC_ACTIVE;
857 vport->fc_ns_retry = 0;
858 spin_unlock_irq(shost->host_lock);
859
860 if (vport->fc_flag & FC_LBIT)
861 lpfc_linkup_cleanup_nodes(vport);
862
863 }
864
865 static int
866 lpfc_linkup(struct lpfc_hba *phba)
867 {
868 struct lpfc_vport **vports;
869 int i;
870
871 phba->link_state = LPFC_LINK_UP;
872
873 /* Unblock fabric iocbs if they are blocked */
874 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
875 del_timer_sync(&phba->fabric_block_timer);
876
877 vports = lpfc_create_vport_work_array(phba);
878 if (vports != NULL)
879 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
880 lpfc_linkup_port(vports[i]);
881 lpfc_destroy_vport_work_array(phba, vports);
882 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
883 (phba->sli_rev < LPFC_SLI_REV4))
884 lpfc_issue_clear_la(phba, phba->pport);
885
886 return 0;
887 }
888
889 /*
890 * This routine handles processing a CLEAR_LA mailbox
891 * command upon completion. It is setup in the LPFC_MBOXQ
892 * as the completion routine when the command is
893 * handed off to the SLI layer.
894 */
895 static void
896 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
897 {
898 struct lpfc_vport *vport = pmb->vport;
899 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
900 struct lpfc_sli *psli = &phba->sli;
901 MAILBOX_t *mb = &pmb->u.mb;
902 uint32_t control;
903
904 /* Since we don't do discovery right now, turn these off here */
905 psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
906 psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
907 psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
908
909 /* Check for error */
910 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
911 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
912 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
913 "0320 CLEAR_LA mbxStatus error x%x hba "
914 "state x%x\n",
915 mb->mbxStatus, vport->port_state);
916 phba->link_state = LPFC_HBA_ERROR;
917 goto out;
918 }
919
920 if (vport->port_type == LPFC_PHYSICAL_PORT)
921 phba->link_state = LPFC_HBA_READY;
922
923 spin_lock_irq(&phba->hbalock);
924 psli->sli_flag |= LPFC_PROCESS_LA;
925 control = readl(phba->HCregaddr);
926 control |= HC_LAINT_ENA;
927 writel(control, phba->HCregaddr);
928 readl(phba->HCregaddr); /* flush */
929 spin_unlock_irq(&phba->hbalock);
930 mempool_free(pmb, phba->mbox_mem_pool);
931 return;
932
933 out:
934 /* Device Discovery completes */
935 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
936 "0225 Device Discovery completes\n");
937 mempool_free(pmb, phba->mbox_mem_pool);
938
939 spin_lock_irq(shost->host_lock);
940 vport->fc_flag &= ~FC_ABORT_DISCOVERY;
941 spin_unlock_irq(shost->host_lock);
942
943 lpfc_can_disctmo(vport);
944
945 /* turn on Link Attention interrupts */
946
947 spin_lock_irq(&phba->hbalock);
948 psli->sli_flag |= LPFC_PROCESS_LA;
949 control = readl(phba->HCregaddr);
950 control |= HC_LAINT_ENA;
951 writel(control, phba->HCregaddr);
952 readl(phba->HCregaddr); /* flush */
953 spin_unlock_irq(&phba->hbalock);
954
955 return;
956 }
957
958
959 static void
960 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
961 {
962 struct lpfc_vport *vport = pmb->vport;
963
964 if (pmb->u.mb.mbxStatus)
965 goto out;
966
967 mempool_free(pmb, phba->mbox_mem_pool);
968
969 if (phba->fc_topology == TOPOLOGY_LOOP &&
970 vport->fc_flag & FC_PUBLIC_LOOP &&
971 !(vport->fc_flag & FC_LBIT)) {
972 /* Need to wait for FAN - use discovery timer
973 * for timeout. port_state is identically
974 * LPFC_LOCAL_CFG_LINK while waiting for FAN
975 */
976 lpfc_set_disctmo(vport);
977 return;
978 }
979
980 /* Start discovery by sending a FLOGI. port_state is identically
981 * LPFC_FLOGI while waiting for FLOGI cmpl
982 */
983 if (vport->port_state != LPFC_FLOGI) {
984 lpfc_initial_flogi(vport);
985 }
986 return;
987
988 out:
989 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
990 "0306 CONFIG_LINK mbxStatus error x%x "
991 "HBA state x%x\n",
992 pmb->u.mb.mbxStatus, vport->port_state);
993 mempool_free(pmb, phba->mbox_mem_pool);
994
995 lpfc_linkdown(phba);
996
997 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
998 "0200 CONFIG_LINK bad hba state x%x\n",
999 vport->port_state);
1000
1001 lpfc_issue_clear_la(phba, vport);
1002 return;
1003 }
1004
1005 static void
1006 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1007 {
1008 struct lpfc_vport *vport = mboxq->vport;
1009 unsigned long flags;
1010
1011 if (mboxq->u.mb.mbxStatus) {
1012 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1013 "2017 REG_FCFI mbxStatus error x%x "
1014 "HBA state x%x\n",
1015 mboxq->u.mb.mbxStatus, vport->port_state);
1016 mempool_free(mboxq, phba->mbox_mem_pool);
1017 return;
1018 }
1019
1020 /* Start FCoE discovery by sending a FLOGI. */
1021 phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1022 /* Set the FCFI registered flag */
1023 spin_lock_irqsave(&phba->hbalock, flags);
1024 phba->fcf.fcf_flag |= FCF_REGISTERED;
1025 spin_unlock_irqrestore(&phba->hbalock, flags);
1026 /* If there is a pending FCoE event, restart FCF table scan. */
1027 if (lpfc_check_pending_fcoe_event(phba, 1)) {
1028 mempool_free(mboxq, phba->mbox_mem_pool);
1029 return;
1030 }
1031 spin_lock_irqsave(&phba->hbalock, flags);
1032 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1033 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1034 spin_unlock_irqrestore(&phba->hbalock, flags);
1035 if (vport->port_state != LPFC_FLOGI)
1036 lpfc_initial_flogi(vport);
1037
1038 mempool_free(mboxq, phba->mbox_mem_pool);
1039 return;
1040 }
1041
1042 /**
1043 * lpfc_fab_name_match - Check if the fcf fabric name match.
1044 * @fab_name: pointer to fabric name.
1045 * @new_fcf_record: pointer to fcf record.
1046 *
1047 * This routine compare the fcf record's fabric name with provided
1048 * fabric name. If the fabric name are identical this function
1049 * returns 1 else return 0.
1050 **/
1051 static uint32_t
1052 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1053 {
1054 if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record))
1055 return 0;
1056 if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record))
1057 return 0;
1058 if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record))
1059 return 0;
1060 if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record))
1061 return 0;
1062 if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record))
1063 return 0;
1064 if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record))
1065 return 0;
1066 if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record))
1067 return 0;
1068 if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record))
1069 return 0;
1070 return 1;
1071 }
1072
1073 /**
1074 * lpfc_sw_name_match - Check if the fcf switch name match.
1075 * @fab_name: pointer to fabric name.
1076 * @new_fcf_record: pointer to fcf record.
1077 *
1078 * This routine compare the fcf record's switch name with provided
1079 * switch name. If the switch name are identical this function
1080 * returns 1 else return 0.
1081 **/
1082 static uint32_t
1083 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1084 {
1085 if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record))
1086 return 0;
1087 if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record))
1088 return 0;
1089 if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record))
1090 return 0;
1091 if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record))
1092 return 0;
1093 if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record))
1094 return 0;
1095 if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record))
1096 return 0;
1097 if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record))
1098 return 0;
1099 if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))
1100 return 0;
1101 return 1;
1102 }
1103
1104 /**
1105 * lpfc_mac_addr_match - Check if the fcf mac address match.
1106 * @mac_addr: pointer to mac address.
1107 * @new_fcf_record: pointer to fcf record.
1108 *
1109 * This routine compare the fcf record's mac address with HBA's
1110 * FCF mac address. If the mac addresses are identical this function
1111 * returns 1 else return 0.
1112 **/
1113 static uint32_t
1114 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record)
1115 {
1116 if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record))
1117 return 0;
1118 if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record))
1119 return 0;
1120 if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record))
1121 return 0;
1122 if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record))
1123 return 0;
1124 if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record))
1125 return 0;
1126 if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record))
1127 return 0;
1128 return 1;
1129 }
1130
1131 static bool
1132 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id)
1133 {
1134 return (curr_vlan_id == new_vlan_id);
1135 }
1136
1137 /**
1138 * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1139 * @fcf: pointer to driver fcf record.
1140 * @new_fcf_record: pointer to fcf record.
1141 *
1142 * This routine copies the FCF information from the FCF
1143 * record to lpfc_hba data structure.
1144 **/
1145 static void
1146 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec,
1147 struct fcf_record *new_fcf_record)
1148 {
1149 /* Fabric name */
1150 fcf_rec->fabric_name[0] =
1151 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1152 fcf_rec->fabric_name[1] =
1153 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1154 fcf_rec->fabric_name[2] =
1155 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1156 fcf_rec->fabric_name[3] =
1157 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1158 fcf_rec->fabric_name[4] =
1159 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1160 fcf_rec->fabric_name[5] =
1161 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1162 fcf_rec->fabric_name[6] =
1163 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1164 fcf_rec->fabric_name[7] =
1165 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1166 /* Mac address */
1167 fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1168 fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1169 fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1170 fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1171 fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1172 fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1173 /* FCF record index */
1174 fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1175 /* FCF record priority */
1176 fcf_rec->priority = new_fcf_record->fip_priority;
1177 /* Switch name */
1178 fcf_rec->switch_name[0] =
1179 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1180 fcf_rec->switch_name[1] =
1181 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1182 fcf_rec->switch_name[2] =
1183 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1184 fcf_rec->switch_name[3] =
1185 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1186 fcf_rec->switch_name[4] =
1187 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1188 fcf_rec->switch_name[5] =
1189 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1190 fcf_rec->switch_name[6] =
1191 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1192 fcf_rec->switch_name[7] =
1193 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1194 }
1195
1196 /**
1197 * lpfc_update_fcf_record - Update driver fcf record
1198 * @phba: pointer to lpfc hba data structure.
1199 * @fcf_rec: pointer to driver fcf record.
1200 * @new_fcf_record: pointer to hba fcf record.
1201 * @addr_mode: address mode to be set to the driver fcf record.
1202 * @vlan_id: vlan tag to be set to the driver fcf record.
1203 * @flag: flag bits to be set to the driver fcf record.
1204 *
1205 * This routine updates the driver FCF record from the new HBA FCF record
1206 * together with the address mode, vlan_id, and other informations. This
1207 * routine is called with the host lock held.
1208 **/
1209 static void
1210 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
1211 struct fcf_record *new_fcf_record, uint32_t addr_mode,
1212 uint16_t vlan_id, uint32_t flag)
1213 {
1214 /* Copy the fields from the HBA's FCF record */
1215 lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
1216 /* Update other fields of driver FCF record */
1217 fcf_rec->addr_mode = addr_mode;
1218 fcf_rec->vlan_id = vlan_id;
1219 fcf_rec->flag |= (flag | RECORD_VALID);
1220 }
1221
1222 /**
1223 * lpfc_register_fcf - Register the FCF with hba.
1224 * @phba: pointer to lpfc hba data structure.
1225 *
1226 * This routine issues a register fcfi mailbox command to register
1227 * the fcf with HBA.
1228 **/
1229 static void
1230 lpfc_register_fcf(struct lpfc_hba *phba)
1231 {
1232 LPFC_MBOXQ_t *fcf_mbxq;
1233 int rc;
1234 unsigned long flags;
1235
1236 spin_lock_irqsave(&phba->hbalock, flags);
1237
1238 /* If the FCF is not availabe do nothing. */
1239 if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1240 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1241 spin_unlock_irqrestore(&phba->hbalock, flags);
1242 return;
1243 }
1244
1245 /* The FCF is already registered, start discovery */
1246 if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1247 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1248 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1249 spin_unlock_irqrestore(&phba->hbalock, flags);
1250 if (phba->pport->port_state != LPFC_FLOGI)
1251 lpfc_initial_flogi(phba->pport);
1252 return;
1253 }
1254 spin_unlock_irqrestore(&phba->hbalock, flags);
1255
1256 fcf_mbxq = mempool_alloc(phba->mbox_mem_pool,
1257 GFP_KERNEL);
1258 if (!fcf_mbxq) {
1259 spin_lock_irqsave(&phba->hbalock, flags);
1260 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1261 spin_unlock_irqrestore(&phba->hbalock, flags);
1262 return;
1263 }
1264
1265 lpfc_reg_fcfi(phba, fcf_mbxq);
1266 fcf_mbxq->vport = phba->pport;
1267 fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1268 rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1269 if (rc == MBX_NOT_FINISHED) {
1270 spin_lock_irqsave(&phba->hbalock, flags);
1271 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1272 spin_unlock_irqrestore(&phba->hbalock, flags);
1273 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1274 }
1275
1276 return;
1277 }
1278
1279 /**
1280 * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1281 * @phba: pointer to lpfc hba data structure.
1282 * @new_fcf_record: pointer to fcf record.
1283 * @boot_flag: Indicates if this record used by boot bios.
1284 * @addr_mode: The address mode to be used by this FCF
1285 * @vlan_id: The vlan id to be used as vlan tagging by this FCF.
1286 *
1287 * This routine compare the fcf record with connect list obtained from the
1288 * config region to decide if this FCF can be used for SAN discovery. It returns
1289 * 1 if this record can be used for SAN discovery else return zero. If this FCF
1290 * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1291 * is used by boot bios and addr_mode will indicate the addressing mode to be
1292 * used for this FCF when the function returns.
1293 * If the FCF record need to be used with a particular vlan id, the vlan is
1294 * set in the vlan_id on return of the function. If not VLAN tagging need to
1295 * be used with the FCF vlan_id will be set to 0xFFFF;
1296 **/
1297 static int
1298 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1299 struct fcf_record *new_fcf_record,
1300 uint32_t *boot_flag, uint32_t *addr_mode,
1301 uint16_t *vlan_id)
1302 {
1303 struct lpfc_fcf_conn_entry *conn_entry;
1304 int i, j, fcf_vlan_id = 0;
1305
1306 /* Find the lowest VLAN id in the FCF record */
1307 for (i = 0; i < 512; i++) {
1308 if (new_fcf_record->vlan_bitmap[i]) {
1309 fcf_vlan_id = i * 8;
1310 j = 0;
1311 while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
1312 j++;
1313 fcf_vlan_id++;
1314 }
1315 break;
1316 }
1317 }
1318
1319 /* If FCF not available return 0 */
1320 if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1321 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record))
1322 return 0;
1323
1324 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
1325 *boot_flag = 0;
1326 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1327 new_fcf_record);
1328 if (phba->valid_vlan)
1329 *vlan_id = phba->vlan_id;
1330 else
1331 *vlan_id = 0xFFFF;
1332 return 1;
1333 }
1334
1335 /*
1336 * If there are no FCF connection table entry, driver connect to all
1337 * FCFs.
1338 */
1339 if (list_empty(&phba->fcf_conn_rec_list)) {
1340 *boot_flag = 0;
1341 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1342 new_fcf_record);
1343
1344 /*
1345 * When there are no FCF connect entries, use driver's default
1346 * addressing mode - FPMA.
1347 */
1348 if (*addr_mode & LPFC_FCF_FPMA)
1349 *addr_mode = LPFC_FCF_FPMA;
1350
1351 /* If FCF record report a vlan id use that vlan id */
1352 if (fcf_vlan_id)
1353 *vlan_id = fcf_vlan_id;
1354 else
1355 *vlan_id = 0xFFFF;
1356 return 1;
1357 }
1358
1359 list_for_each_entry(conn_entry,
1360 &phba->fcf_conn_rec_list, list) {
1361 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
1362 continue;
1363
1364 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
1365 !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
1366 new_fcf_record))
1367 continue;
1368 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
1369 !lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
1370 new_fcf_record))
1371 continue;
1372 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
1373 /*
1374 * If the vlan bit map does not have the bit set for the
1375 * vlan id to be used, then it is not a match.
1376 */
1377 if (!(new_fcf_record->vlan_bitmap
1378 [conn_entry->conn_rec.vlan_tag / 8] &
1379 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
1380 continue;
1381 }
1382
1383 /*
1384 * If connection record does not support any addressing mode,
1385 * skip the FCF record.
1386 */
1387 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
1388 & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
1389 continue;
1390
1391 /*
1392 * Check if the connection record specifies a required
1393 * addressing mode.
1394 */
1395 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1396 !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
1397
1398 /*
1399 * If SPMA required but FCF not support this continue.
1400 */
1401 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1402 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1403 new_fcf_record) & LPFC_FCF_SPMA))
1404 continue;
1405
1406 /*
1407 * If FPMA required but FCF not support this continue.
1408 */
1409 if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1410 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1411 new_fcf_record) & LPFC_FCF_FPMA))
1412 continue;
1413 }
1414
1415 /*
1416 * This fcf record matches filtering criteria.
1417 */
1418 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
1419 *boot_flag = 1;
1420 else
1421 *boot_flag = 0;
1422
1423 /*
1424 * If user did not specify any addressing mode, or if the
1425 * prefered addressing mode specified by user is not supported
1426 * by FCF, allow fabric to pick the addressing mode.
1427 */
1428 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1429 new_fcf_record);
1430 /*
1431 * If the user specified a required address mode, assign that
1432 * address mode
1433 */
1434 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1435 (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
1436 *addr_mode = (conn_entry->conn_rec.flags &
1437 FCFCNCT_AM_SPMA) ?
1438 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
1439 /*
1440 * If the user specified a prefered address mode, use the
1441 * addr mode only if FCF support the addr_mode.
1442 */
1443 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1444 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1445 (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1446 (*addr_mode & LPFC_FCF_SPMA))
1447 *addr_mode = LPFC_FCF_SPMA;
1448 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1449 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1450 !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1451 (*addr_mode & LPFC_FCF_FPMA))
1452 *addr_mode = LPFC_FCF_FPMA;
1453
1454 /* If matching connect list has a vlan id, use it */
1455 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
1456 *vlan_id = conn_entry->conn_rec.vlan_tag;
1457 /*
1458 * If no vlan id is specified in connect list, use the vlan id
1459 * in the FCF record
1460 */
1461 else if (fcf_vlan_id)
1462 *vlan_id = fcf_vlan_id;
1463 else
1464 *vlan_id = 0xFFFF;
1465
1466 return 1;
1467 }
1468
1469 return 0;
1470 }
1471
1472 /**
1473 * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
1474 * @phba: pointer to lpfc hba data structure.
1475 * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
1476 *
1477 * This function check if there is any fcoe event pending while driver
1478 * scan FCF entries. If there is any pending event, it will restart the
1479 * FCF saning and return 1 else return 0.
1480 */
1481 int
1482 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
1483 {
1484 LPFC_MBOXQ_t *mbox;
1485 int rc;
1486 /*
1487 * If the Link is up and no FCoE events while in the
1488 * FCF discovery, no need to restart FCF discovery.
1489 */
1490 if ((phba->link_state >= LPFC_LINK_UP) &&
1491 (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
1492 return 0;
1493
1494 spin_lock_irq(&phba->hbalock);
1495 phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
1496 spin_unlock_irq(&phba->hbalock);
1497
1498 if (phba->link_state >= LPFC_LINK_UP)
1499 lpfc_sli4_read_fcf_record(phba, LPFC_FCOE_FCF_GET_FIRST);
1500 else {
1501 /*
1502 * Do not continue FCF discovery and clear FCF_DISC_INPROGRESS
1503 * flag
1504 */
1505 spin_lock_irq(&phba->hbalock);
1506 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1507 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
1508 spin_unlock_irq(&phba->hbalock);
1509 }
1510
1511 if (unreg_fcf) {
1512 spin_lock_irq(&phba->hbalock);
1513 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
1514 spin_unlock_irq(&phba->hbalock);
1515 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1516 if (!mbox) {
1517 lpfc_printf_log(phba, KERN_ERR,
1518 LOG_DISCOVERY|LOG_MBOX,
1519 "2610 UNREG_FCFI mbox allocation failed\n");
1520 return 1;
1521 }
1522 lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
1523 mbox->vport = phba->pport;
1524 mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
1525 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1526 if (rc == MBX_NOT_FINISHED) {
1527 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
1528 "2611 UNREG_FCFI issue mbox failed\n");
1529 mempool_free(mbox, phba->mbox_mem_pool);
1530 }
1531 }
1532
1533 return 1;
1534 }
1535
1536 /**
1537 * lpfc_mbx_cmpl_read_fcf_record - Completion handler for read_fcf mbox.
1538 * @phba: pointer to lpfc hba data structure.
1539 * @mboxq: pointer to mailbox object.
1540 *
1541 * This function iterate through all the fcf records available in
1542 * HBA and choose the optimal FCF record for discovery. After finding
1543 * the FCF for discovery it register the FCF record and kick start
1544 * discovery.
1545 * If FCF_IN_USE flag is set in currently used FCF, the routine try to
1546 * use a FCF record which match fabric name and mac address of the
1547 * currently used FCF record.
1548 * If the driver support only one FCF, it will try to use the FCF record
1549 * used by BOOT_BIOS.
1550 */
1551 void
1552 lpfc_mbx_cmpl_read_fcf_record(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1553 {
1554 void *virt_addr;
1555 dma_addr_t phys_addr;
1556 uint8_t *bytep;
1557 struct lpfc_mbx_sge sge;
1558 struct lpfc_mbx_read_fcf_tbl *read_fcf;
1559 uint32_t shdr_status, shdr_add_status;
1560 union lpfc_sli4_cfg_shdr *shdr;
1561 struct fcf_record *new_fcf_record;
1562 uint32_t boot_flag, addr_mode;
1563 uint32_t next_fcf_index;
1564 struct lpfc_fcf_rec *fcf_rec = NULL;
1565 unsigned long iflags;
1566 uint16_t vlan_id;
1567 int rc;
1568
1569 /* If there is pending FCoE event restart FCF table scan */
1570 if (lpfc_check_pending_fcoe_event(phba, 0)) {
1571 lpfc_sli4_mbox_cmd_free(phba, mboxq);
1572 return;
1573 }
1574
1575 /* Get the first SGE entry from the non-embedded DMA memory. This
1576 * routine only uses a single SGE.
1577 */
1578 lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
1579 phys_addr = getPaddr(sge.pa_hi, sge.pa_lo);
1580 if (unlikely(!mboxq->sge_array)) {
1581 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1582 "2524 Failed to get the non-embedded SGE "
1583 "virtual address\n");
1584 goto out;
1585 }
1586 virt_addr = mboxq->sge_array->addr[0];
1587
1588 shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
1589 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
1590 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
1591 &shdr->response);
1592 /*
1593 * The FCF Record was read and there is no reason for the driver
1594 * to maintain the FCF record data or memory. Instead, just need
1595 * to book keeping the FCFIs can be used.
1596 */
1597 if (shdr_status || shdr_add_status) {
1598 if (shdr_status == STATUS_FCF_TABLE_EMPTY) {
1599 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1600 "2726 READ_FCF_RECORD Indicates empty "
1601 "FCF table.\n");
1602 } else {
1603 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1604 "2521 READ_FCF_RECORD mailbox failed "
1605 "with status x%x add_status x%x, mbx\n",
1606 shdr_status, shdr_add_status);
1607 }
1608 goto out;
1609 }
1610 /* Interpreting the returned information of FCF records */
1611 read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
1612 lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
1613 sizeof(struct lpfc_mbx_read_fcf_tbl));
1614 next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
1615
1616 new_fcf_record = (struct fcf_record *)(virt_addr +
1617 sizeof(struct lpfc_mbx_read_fcf_tbl));
1618 lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
1619 sizeof(struct fcf_record));
1620 bytep = virt_addr + sizeof(union lpfc_sli4_cfg_shdr);
1621
1622 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
1623 &addr_mode, &vlan_id);
1624 /*
1625 * If the fcf record does not match with connect list entries
1626 * read the next entry.
1627 */
1628 if (!rc)
1629 goto read_next_fcf;
1630 /*
1631 * If this is not the first FCF discovery of the HBA, use last
1632 * FCF record for the discovery. The condition that a rescan
1633 * matches the in-use FCF record: fabric name, switch name, mac
1634 * address, and vlan_id.
1635 */
1636 spin_lock_irqsave(&phba->hbalock, iflags);
1637 if (phba->fcf.fcf_flag & FCF_IN_USE) {
1638 if (lpfc_fab_name_match(phba->fcf.current_rec.fabric_name,
1639 new_fcf_record) &&
1640 lpfc_sw_name_match(phba->fcf.current_rec.switch_name,
1641 new_fcf_record) &&
1642 lpfc_mac_addr_match(phba->fcf.current_rec.mac_addr,
1643 new_fcf_record) &&
1644 lpfc_vlan_id_match(phba->fcf.current_rec.vlan_id,
1645 vlan_id)) {
1646 phba->fcf.fcf_flag |= FCF_AVAILABLE;
1647 if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
1648 /* Stop FCF redisc wait timer if pending */
1649 __lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
1650 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
1651 /* If in fast failover, mark it's completed */
1652 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
1653 spin_unlock_irqrestore(&phba->hbalock, iflags);
1654 goto out;
1655 }
1656 /*
1657 * Read next FCF record from HBA searching for the matching
1658 * with in-use record only if not during the fast failover
1659 * period. In case of fast failover period, it shall try to
1660 * determine whether the FCF record just read should be the
1661 * next candidate.
1662 */
1663 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
1664 spin_unlock_irqrestore(&phba->hbalock, iflags);
1665 goto read_next_fcf;
1666 }
1667 }
1668 /*
1669 * Update on failover FCF record only if it's in FCF fast-failover
1670 * period; otherwise, update on current FCF record.
1671 */
1672 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
1673 /* Fast FCF failover only to the same fabric name */
1674 if (lpfc_fab_name_match(phba->fcf.current_rec.fabric_name,
1675 new_fcf_record))
1676 fcf_rec = &phba->fcf.failover_rec;
1677 else
1678 goto read_next_fcf;
1679 } else
1680 fcf_rec = &phba->fcf.current_rec;
1681
1682 if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
1683 /*
1684 * If the driver FCF record does not have boot flag
1685 * set and new hba fcf record has boot flag set, use
1686 * the new hba fcf record.
1687 */
1688 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
1689 /* Choose this FCF record */
1690 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
1691 addr_mode, vlan_id, BOOT_ENABLE);
1692 spin_unlock_irqrestore(&phba->hbalock, iflags);
1693 goto read_next_fcf;
1694 }
1695 /*
1696 * If the driver FCF record has boot flag set and the
1697 * new hba FCF record does not have boot flag, read
1698 * the next FCF record.
1699 */
1700 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) {
1701 spin_unlock_irqrestore(&phba->hbalock, iflags);
1702 goto read_next_fcf;
1703 }
1704 /*
1705 * If the new hba FCF record has lower priority value
1706 * than the driver FCF record, use the new record.
1707 */
1708 if (lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record) &&
1709 (new_fcf_record->fip_priority < fcf_rec->priority)) {
1710 /* Choose this FCF record */
1711 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
1712 addr_mode, vlan_id, 0);
1713 }
1714 spin_unlock_irqrestore(&phba->hbalock, iflags);
1715 goto read_next_fcf;
1716 }
1717 /*
1718 * This is the first suitable FCF record, choose this record for
1719 * initial best-fit FCF.
1720 */
1721 if (fcf_rec) {
1722 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
1723 addr_mode, vlan_id, (boot_flag ?
1724 BOOT_ENABLE : 0));
1725 phba->fcf.fcf_flag |= FCF_AVAILABLE;
1726 }
1727 spin_unlock_irqrestore(&phba->hbalock, iflags);
1728 goto read_next_fcf;
1729
1730 read_next_fcf:
1731 lpfc_sli4_mbox_cmd_free(phba, mboxq);
1732 if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) {
1733 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
1734 /*
1735 * Case of FCF fast failover scan
1736 */
1737
1738 /*
1739 * It has not found any suitable FCF record, cancel
1740 * FCF scan inprogress, and do nothing
1741 */
1742 if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) {
1743 spin_lock_irqsave(&phba->hbalock, iflags);
1744 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1745 spin_unlock_irqrestore(&phba->hbalock, iflags);
1746 return;
1747 }
1748 /*
1749 * It has found a suitable FCF record that is not
1750 * the same as in-use FCF record, unregister the
1751 * in-use FCF record, replace the in-use FCF record
1752 * with the new FCF record, mark FCF fast failover
1753 * completed, and then start register the new FCF
1754 * record.
1755 */
1756
1757 /* unregister the current in-use FCF record */
1758 lpfc_unregister_fcf(phba);
1759 /* replace in-use record with the new record */
1760 memcpy(&phba->fcf.current_rec,
1761 &phba->fcf.failover_rec,
1762 sizeof(struct lpfc_fcf_rec));
1763 /* mark the FCF fast failover completed */
1764 spin_lock_irqsave(&phba->hbalock, iflags);
1765 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
1766 spin_unlock_irqrestore(&phba->hbalock, iflags);
1767 /* Register to the new FCF record */
1768 lpfc_register_fcf(phba);
1769 } else {
1770 /*
1771 * In case of transaction period to fast FCF failover,
1772 * do nothing when search to the end of the FCF table.
1773 */
1774 if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
1775 (phba->fcf.fcf_flag & FCF_REDISC_PEND))
1776 return;
1777 /*
1778 * Otherwise, initial scan or post linkdown rescan,
1779 * register with the best fit FCF record found so
1780 * far through the scanning process.
1781 */
1782 lpfc_register_fcf(phba);
1783 }
1784 } else
1785 lpfc_sli4_read_fcf_record(phba, next_fcf_index);
1786 return;
1787
1788 out:
1789 lpfc_sli4_mbox_cmd_free(phba, mboxq);
1790 lpfc_register_fcf(phba);
1791
1792 return;
1793 }
1794
1795 /**
1796 * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
1797 * @phba: pointer to lpfc hba data structure.
1798 * @mboxq: pointer to mailbox data structure.
1799 *
1800 * This function handles completion of init vpi mailbox command.
1801 */
1802 void
1803 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1804 {
1805 struct lpfc_vport *vport = mboxq->vport;
1806 struct lpfc_nodelist *ndlp;
1807 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1808
1809 if (mboxq->u.mb.mbxStatus) {
1810 lpfc_printf_vlog(vport, KERN_ERR,
1811 LOG_MBOX,
1812 "2609 Init VPI mailbox failed 0x%x\n",
1813 mboxq->u.mb.mbxStatus);
1814 mempool_free(mboxq, phba->mbox_mem_pool);
1815 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1816 return;
1817 }
1818 spin_lock_irq(shost->host_lock);
1819 vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
1820 spin_unlock_irq(shost->host_lock);
1821
1822 /* If this port is physical port or FDISC is done, do reg_vpi */
1823 if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) {
1824 ndlp = lpfc_findnode_did(vport, Fabric_DID);
1825 if (!ndlp)
1826 lpfc_printf_vlog(vport, KERN_ERR,
1827 LOG_DISCOVERY,
1828 "2731 Cannot find fabric "
1829 "controller node\n");
1830 else
1831 lpfc_register_new_vport(phba, vport, ndlp);
1832 mempool_free(mboxq, phba->mbox_mem_pool);
1833 return;
1834 }
1835
1836 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1837 lpfc_initial_fdisc(vport);
1838 else {
1839 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
1840 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1841 "2606 No NPIV Fabric support\n");
1842 }
1843 mempool_free(mboxq, phba->mbox_mem_pool);
1844 return;
1845 }
1846
1847 /**
1848 * lpfc_issue_init_vpi - Issue init_vpi mailbox command.
1849 * @vport: pointer to lpfc_vport data structure.
1850 *
1851 * This function issue a init_vpi mailbox command to initialize
1852 * VPI for the vport.
1853 */
1854 void
1855 lpfc_issue_init_vpi(struct lpfc_vport *vport)
1856 {
1857 LPFC_MBOXQ_t *mboxq;
1858 int rc;
1859
1860 mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL);
1861 if (!mboxq) {
1862 lpfc_printf_vlog(vport, KERN_ERR,
1863 LOG_MBOX, "2607 Failed to allocate "
1864 "init_vpi mailbox\n");
1865 return;
1866 }
1867 lpfc_init_vpi(vport->phba, mboxq, vport->vpi);
1868 mboxq->vport = vport;
1869 mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
1870 rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT);
1871 if (rc == MBX_NOT_FINISHED) {
1872 lpfc_printf_vlog(vport, KERN_ERR,
1873 LOG_MBOX, "2608 Failed to issue init_vpi mailbox\n");
1874 mempool_free(mboxq, vport->phba->mbox_mem_pool);
1875 }
1876 }
1877
1878 /**
1879 * lpfc_start_fdiscs - send fdiscs for each vports on this port.
1880 * @phba: pointer to lpfc hba data structure.
1881 *
1882 * This function loops through the list of vports on the @phba and issues an
1883 * FDISC if possible.
1884 */
1885 void
1886 lpfc_start_fdiscs(struct lpfc_hba *phba)
1887 {
1888 struct lpfc_vport **vports;
1889 int i;
1890
1891 vports = lpfc_create_vport_work_array(phba);
1892 if (vports != NULL) {
1893 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
1894 if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
1895 continue;
1896 /* There are no vpi for this vport */
1897 if (vports[i]->vpi > phba->max_vpi) {
1898 lpfc_vport_set_state(vports[i],
1899 FC_VPORT_FAILED);
1900 continue;
1901 }
1902 if (phba->fc_topology == TOPOLOGY_LOOP) {
1903 lpfc_vport_set_state(vports[i],
1904 FC_VPORT_LINKDOWN);
1905 continue;
1906 }
1907 if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
1908 lpfc_issue_init_vpi(vports[i]);
1909 continue;
1910 }
1911 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1912 lpfc_initial_fdisc(vports[i]);
1913 else {
1914 lpfc_vport_set_state(vports[i],
1915 FC_VPORT_NO_FABRIC_SUPP);
1916 lpfc_printf_vlog(vports[i], KERN_ERR,
1917 LOG_ELS,
1918 "0259 No NPIV "
1919 "Fabric support\n");
1920 }
1921 }
1922 }
1923 lpfc_destroy_vport_work_array(phba, vports);
1924 }
1925
1926 void
1927 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1928 {
1929 struct lpfc_dmabuf *dmabuf = mboxq->context1;
1930 struct lpfc_vport *vport = mboxq->vport;
1931 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1932
1933 if (mboxq->u.mb.mbxStatus) {
1934 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1935 "2018 REG_VFI mbxStatus error x%x "
1936 "HBA state x%x\n",
1937 mboxq->u.mb.mbxStatus, vport->port_state);
1938 if (phba->fc_topology == TOPOLOGY_LOOP) {
1939 /* FLOGI failed, use loop map to make discovery list */
1940 lpfc_disc_list_loopmap(vport);
1941 /* Start discovery */
1942 lpfc_disc_start(vport);
1943 goto fail_free_mem;
1944 }
1945 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1946 goto fail_free_mem;
1947 }
1948 /* The VPI is implicitly registered when the VFI is registered */
1949 spin_lock_irq(shost->host_lock);
1950 vport->vpi_state |= LPFC_VPI_REGISTERED;
1951 vport->fc_flag |= FC_VFI_REGISTERED;
1952 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
1953 spin_unlock_irq(shost->host_lock);
1954
1955 if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
1956 lpfc_start_fdiscs(phba);
1957 lpfc_do_scr_ns_plogi(phba, vport);
1958 }
1959
1960 fail_free_mem:
1961 mempool_free(mboxq, phba->mbox_mem_pool);
1962 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
1963 kfree(dmabuf);
1964 return;
1965 }
1966
1967 static void
1968 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1969 {
1970 MAILBOX_t *mb = &pmb->u.mb;
1971 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
1972 struct lpfc_vport *vport = pmb->vport;
1973
1974
1975 /* Check for error */
1976 if (mb->mbxStatus) {
1977 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
1978 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1979 "0319 READ_SPARAM mbxStatus error x%x "
1980 "hba state x%x>\n",
1981 mb->mbxStatus, vport->port_state);
1982 lpfc_linkdown(phba);
1983 goto out;
1984 }
1985
1986 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
1987 sizeof (struct serv_parm));
1988 if (phba->cfg_soft_wwnn)
1989 u64_to_wwn(phba->cfg_soft_wwnn,
1990 vport->fc_sparam.nodeName.u.wwn);
1991 if (phba->cfg_soft_wwpn)
1992 u64_to_wwn(phba->cfg_soft_wwpn,
1993 vport->fc_sparam.portName.u.wwn);
1994 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
1995 sizeof(vport->fc_nodename));
1996 memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
1997 sizeof(vport->fc_portname));
1998 if (vport->port_type == LPFC_PHYSICAL_PORT) {
1999 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
2000 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
2001 }
2002
2003 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2004 kfree(mp);
2005 mempool_free(pmb, phba->mbox_mem_pool);
2006 return;
2007
2008 out:
2009 pmb->context1 = NULL;
2010 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2011 kfree(mp);
2012 lpfc_issue_clear_la(phba, vport);
2013 mempool_free(pmb, phba->mbox_mem_pool);
2014 return;
2015 }
2016
2017 static void
2018 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
2019 {
2020 struct lpfc_vport *vport = phba->pport;
2021 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
2022 int i;
2023 struct lpfc_dmabuf *mp;
2024 int rc;
2025 struct fcf_record *fcf_record;
2026
2027 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2028
2029 spin_lock_irq(&phba->hbalock);
2030 switch (la->UlnkSpeed) {
2031 case LA_1GHZ_LINK:
2032 phba->fc_linkspeed = LA_1GHZ_LINK;
2033 break;
2034 case LA_2GHZ_LINK:
2035 phba->fc_linkspeed = LA_2GHZ_LINK;
2036 break;
2037 case LA_4GHZ_LINK:
2038 phba->fc_linkspeed = LA_4GHZ_LINK;
2039 break;
2040 case LA_8GHZ_LINK:
2041 phba->fc_linkspeed = LA_8GHZ_LINK;
2042 break;
2043 case LA_10GHZ_LINK:
2044 phba->fc_linkspeed = LA_10GHZ_LINK;
2045 break;
2046 default:
2047 phba->fc_linkspeed = LA_UNKNW_LINK;
2048 break;
2049 }
2050
2051 phba->fc_topology = la->topology;
2052 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
2053
2054 if (phba->fc_topology == TOPOLOGY_LOOP) {
2055 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
2056
2057 /* if npiv is enabled and this adapter supports npiv log
2058 * a message that npiv is not supported in this topology
2059 */
2060 if (phba->cfg_enable_npiv && phba->max_vpi)
2061 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2062 "1309 Link Up Event npiv not supported in loop "
2063 "topology\n");
2064 /* Get Loop Map information */
2065 if (la->il)
2066 vport->fc_flag |= FC_LBIT;
2067
2068 vport->fc_myDID = la->granted_AL_PA;
2069 i = la->un.lilpBde64.tus.f.bdeSize;
2070
2071 if (i == 0) {
2072 phba->alpa_map[0] = 0;
2073 } else {
2074 if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
2075 int numalpa, j, k;
2076 union {
2077 uint8_t pamap[16];
2078 struct {
2079 uint32_t wd1;
2080 uint32_t wd2;
2081 uint32_t wd3;
2082 uint32_t wd4;
2083 } pa;
2084 } un;
2085 numalpa = phba->alpa_map[0];
2086 j = 0;
2087 while (j < numalpa) {
2088 memset(un.pamap, 0, 16);
2089 for (k = 1; j < numalpa; k++) {
2090 un.pamap[k - 1] =
2091 phba->alpa_map[j + 1];
2092 j++;
2093 if (k == 16)
2094 break;
2095 }
2096 /* Link Up Event ALPA map */
2097 lpfc_printf_log(phba,
2098 KERN_WARNING,
2099 LOG_LINK_EVENT,
2100 "1304 Link Up Event "
2101 "ALPA map Data: x%x "
2102 "x%x x%x x%x\n",
2103 un.pa.wd1, un.pa.wd2,
2104 un.pa.wd3, un.pa.wd4);
2105 }
2106 }
2107 }
2108 } else {
2109 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
2110 if (phba->max_vpi && phba->cfg_enable_npiv &&
2111 (phba->sli_rev == 3))
2112 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
2113 }
2114 vport->fc_myDID = phba->fc_pref_DID;
2115 vport->fc_flag |= FC_LBIT;
2116 }
2117 spin_unlock_irq(&phba->hbalock);
2118
2119 lpfc_linkup(phba);
2120 if (sparam_mbox) {
2121 lpfc_read_sparam(phba, sparam_mbox, 0);
2122 sparam_mbox->vport = vport;
2123 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
2124 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
2125 if (rc == MBX_NOT_FINISHED) {
2126 mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
2127 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2128 kfree(mp);
2129 mempool_free(sparam_mbox, phba->mbox_mem_pool);
2130 goto out;
2131 }
2132 }
2133
2134 if (!(phba->hba_flag & HBA_FCOE_SUPPORT)) {
2135 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2136 if (!cfglink_mbox)
2137 goto out;
2138 vport->port_state = LPFC_LOCAL_CFG_LINK;
2139 lpfc_config_link(phba, cfglink_mbox);
2140 cfglink_mbox->vport = vport;
2141 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
2142 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
2143 if (rc == MBX_NOT_FINISHED) {
2144 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
2145 goto out;
2146 }
2147 } else {
2148 vport->port_state = LPFC_VPORT_UNKNOWN;
2149 /*
2150 * Add the driver's default FCF record at FCF index 0 now. This
2151 * is phase 1 implementation that support FCF index 0 and driver
2152 * defaults.
2153 */
2154 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
2155 fcf_record = kzalloc(sizeof(struct fcf_record),
2156 GFP_KERNEL);
2157 if (unlikely(!fcf_record)) {
2158 lpfc_printf_log(phba, KERN_ERR,
2159 LOG_MBOX | LOG_SLI,
2160 "2554 Could not allocate memmory for "
2161 "fcf record\n");
2162 rc = -ENODEV;
2163 goto out;
2164 }
2165
2166 lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
2167 LPFC_FCOE_FCF_DEF_INDEX);
2168 rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
2169 if (unlikely(rc)) {
2170 lpfc_printf_log(phba, KERN_ERR,
2171 LOG_MBOX | LOG_SLI,
2172 "2013 Could not manually add FCF "
2173 "record 0, status %d\n", rc);
2174 rc = -ENODEV;
2175 kfree(fcf_record);
2176 goto out;
2177 }
2178 kfree(fcf_record);
2179 }
2180 /*
2181 * The driver is expected to do FIP/FCF. Call the port
2182 * and get the FCF Table.
2183 */
2184 spin_lock_irq(&phba->hbalock);
2185 if (phba->hba_flag & FCF_DISC_INPROGRESS) {
2186 spin_unlock_irq(&phba->hbalock);
2187 return;
2188 }
2189 spin_unlock_irq(&phba->hbalock);
2190 rc = lpfc_sli4_read_fcf_record(phba, LPFC_FCOE_FCF_GET_FIRST);
2191 if (rc)
2192 goto out;
2193 }
2194
2195 return;
2196 out:
2197 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2198 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2199 "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
2200 vport->port_state, sparam_mbox, cfglink_mbox);
2201 lpfc_issue_clear_la(phba, vport);
2202 return;
2203 }
2204
2205 static void
2206 lpfc_enable_la(struct lpfc_hba *phba)
2207 {
2208 uint32_t control;
2209 struct lpfc_sli *psli = &phba->sli;
2210 spin_lock_irq(&phba->hbalock);
2211 psli->sli_flag |= LPFC_PROCESS_LA;
2212 if (phba->sli_rev <= LPFC_SLI_REV3) {
2213 control = readl(phba->HCregaddr);
2214 control |= HC_LAINT_ENA;
2215 writel(control, phba->HCregaddr);
2216 readl(phba->HCregaddr); /* flush */
2217 }
2218 spin_unlock_irq(&phba->hbalock);
2219 }
2220
2221 static void
2222 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
2223 {
2224 lpfc_linkdown(phba);
2225 lpfc_enable_la(phba);
2226 lpfc_unregister_unused_fcf(phba);
2227 /* turn on Link Attention interrupts - no CLEAR_LA needed */
2228 }
2229
2230
2231 /*
2232 * This routine handles processing a READ_LA mailbox
2233 * command upon completion. It is setup in the LPFC_MBOXQ
2234 * as the completion routine when the command is
2235 * handed off to the SLI layer.
2236 */
2237 void
2238 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2239 {
2240 struct lpfc_vport *vport = pmb->vport;
2241 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2242 READ_LA_VAR *la;
2243 MAILBOX_t *mb = &pmb->u.mb;
2244 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2245
2246 /* Unblock ELS traffic */
2247 phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
2248 /* Check for error */
2249 if (mb->mbxStatus) {
2250 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
2251 "1307 READ_LA mbox error x%x state x%x\n",
2252 mb->mbxStatus, vport->port_state);
2253 lpfc_mbx_issue_link_down(phba);
2254 phba->link_state = LPFC_HBA_ERROR;
2255 goto lpfc_mbx_cmpl_read_la_free_mbuf;
2256 }
2257
2258 la = (READ_LA_VAR *) &pmb->u.mb.un.varReadLA;
2259
2260 memcpy(&phba->alpa_map[0], mp->virt, 128);
2261
2262 spin_lock_irq(shost->host_lock);
2263 if (la->pb)
2264 vport->fc_flag |= FC_BYPASSED_MODE;
2265 else
2266 vport->fc_flag &= ~FC_BYPASSED_MODE;
2267 spin_unlock_irq(shost->host_lock);
2268
2269 if ((phba->fc_eventTag < la->eventTag) ||
2270 (phba->fc_eventTag == la->eventTag)) {
2271 phba->fc_stat.LinkMultiEvent++;
2272 if (la->attType == AT_LINK_UP)
2273 if (phba->fc_eventTag != 0)
2274 lpfc_linkdown(phba);
2275 }
2276
2277 phba->fc_eventTag = la->eventTag;
2278 spin_lock_irq(&phba->hbalock);
2279 if (la->mm)
2280 phba->sli.sli_flag |= LPFC_MENLO_MAINT;
2281 else
2282 phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
2283 spin_unlock_irq(&phba->hbalock);
2284
2285 phba->link_events++;
2286 if (la->attType == AT_LINK_UP && (!la->mm)) {
2287 phba->fc_stat.LinkUp++;
2288 if (phba->link_flag & LS_LOOPBACK_MODE) {
2289 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2290 "1306 Link Up Event in loop back mode "
2291 "x%x received Data: x%x x%x x%x x%x\n",
2292 la->eventTag, phba->fc_eventTag,
2293 la->granted_AL_PA, la->UlnkSpeed,
2294 phba->alpa_map[0]);
2295 } else {
2296 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2297 "1303 Link Up Event x%x received "
2298 "Data: x%x x%x x%x x%x x%x x%x %d\n",
2299 la->eventTag, phba->fc_eventTag,
2300 la->granted_AL_PA, la->UlnkSpeed,
2301 phba->alpa_map[0],
2302 la->mm, la->fa,
2303 phba->wait_4_mlo_maint_flg);
2304 }
2305 lpfc_mbx_process_link_up(phba, la);
2306 } else if (la->attType == AT_LINK_DOWN) {
2307 phba->fc_stat.LinkDown++;
2308 if (phba->link_flag & LS_LOOPBACK_MODE) {
2309 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2310 "1308 Link Down Event in loop back mode "
2311 "x%x received "
2312 "Data: x%x x%x x%x\n",
2313 la->eventTag, phba->fc_eventTag,
2314 phba->pport->port_state, vport->fc_flag);
2315 }
2316 else {
2317 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2318 "1305 Link Down Event x%x received "
2319 "Data: x%x x%x x%x x%x x%x\n",
2320 la->eventTag, phba->fc_eventTag,
2321 phba->pport->port_state, vport->fc_flag,
2322 la->mm, la->fa);
2323 }
2324 lpfc_mbx_issue_link_down(phba);
2325 }
2326 if (la->mm && la->attType == AT_LINK_UP) {
2327 if (phba->link_state != LPFC_LINK_DOWN) {
2328 phba->fc_stat.LinkDown++;
2329 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2330 "1312 Link Down Event x%x received "
2331 "Data: x%x x%x x%x\n",
2332 la->eventTag, phba->fc_eventTag,
2333 phba->pport->port_state, vport->fc_flag);
2334 lpfc_mbx_issue_link_down(phba);
2335 } else
2336 lpfc_enable_la(phba);
2337
2338 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2339 "1310 Menlo Maint Mode Link up Event x%x rcvd "
2340 "Data: x%x x%x x%x\n",
2341 la->eventTag, phba->fc_eventTag,
2342 phba->pport->port_state, vport->fc_flag);
2343 /*
2344 * The cmnd that triggered this will be waiting for this
2345 * signal.
2346 */
2347 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
2348 if (phba->wait_4_mlo_maint_flg) {
2349 phba->wait_4_mlo_maint_flg = 0;
2350 wake_up_interruptible(&phba->wait_4_mlo_m_q);
2351 }
2352 }
2353
2354 if (la->fa) {
2355 if (la->mm)
2356 lpfc_issue_clear_la(phba, vport);
2357 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
2358 "1311 fa %d\n", la->fa);
2359 }
2360
2361 lpfc_mbx_cmpl_read_la_free_mbuf:
2362 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2363 kfree(mp);
2364 mempool_free(pmb, phba->mbox_mem_pool);
2365 return;
2366 }
2367
2368 /*
2369 * This routine handles processing a REG_LOGIN mailbox
2370 * command upon completion. It is setup in the LPFC_MBOXQ
2371 * as the completion routine when the command is
2372 * handed off to the SLI layer.
2373 */
2374 void
2375 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2376 {
2377 struct lpfc_vport *vport = pmb->vport;
2378 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2379 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2380
2381 pmb->context1 = NULL;
2382
2383 /* Good status, call state machine */
2384 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
2385 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2386 kfree(mp);
2387 mempool_free(pmb, phba->mbox_mem_pool);
2388 /* decrement the node reference count held for this callback
2389 * function.
2390 */
2391 lpfc_nlp_put(ndlp);
2392
2393 return;
2394 }
2395
2396 static void
2397 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2398 {
2399 MAILBOX_t *mb = &pmb->u.mb;
2400 struct lpfc_vport *vport = pmb->vport;
2401 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2402
2403 switch (mb->mbxStatus) {
2404 case 0x0011:
2405 case 0x0020:
2406 case 0x9700:
2407 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2408 "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
2409 mb->mbxStatus);
2410 break;
2411 }
2412 spin_lock_irq(shost->host_lock);
2413 vport->vpi_state &= ~LPFC_VPI_REGISTERED;
2414 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
2415 spin_unlock_irq(shost->host_lock);
2416 vport->unreg_vpi_cmpl = VPORT_OK;
2417 mempool_free(pmb, phba->mbox_mem_pool);
2418 /*
2419 * This shost reference might have been taken at the beginning of
2420 * lpfc_vport_delete()
2421 */
2422 if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport))
2423 scsi_host_put(shost);
2424 }
2425
2426 int
2427 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
2428 {
2429 struct lpfc_hba *phba = vport->phba;
2430 LPFC_MBOXQ_t *mbox;
2431 int rc;
2432
2433 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2434 if (!mbox)
2435 return 1;
2436
2437 lpfc_unreg_vpi(phba, vport->vpi, mbox);
2438 mbox->vport = vport;
2439 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
2440 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2441 if (rc == MBX_NOT_FINISHED) {
2442 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
2443 "1800 Could not issue unreg_vpi\n");
2444 mempool_free(mbox, phba->mbox_mem_pool);
2445 vport->unreg_vpi_cmpl = VPORT_ERROR;
2446 return rc;
2447 }
2448 return 0;
2449 }
2450
2451 static void
2452 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2453 {
2454 struct lpfc_vport *vport = pmb->vport;
2455 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2456 MAILBOX_t *mb = &pmb->u.mb;
2457
2458 switch (mb->mbxStatus) {
2459 case 0x0011:
2460 case 0x9601:
2461 case 0x9602:
2462 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2463 "0912 cmpl_reg_vpi, mb status = 0x%x\n",
2464 mb->mbxStatus);
2465 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2466 spin_lock_irq(shost->host_lock);
2467 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2468 spin_unlock_irq(shost->host_lock);
2469 vport->fc_myDID = 0;
2470 goto out;
2471 }
2472
2473 spin_lock_irq(shost->host_lock);
2474 vport->vpi_state |= LPFC_VPI_REGISTERED;
2475 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
2476 spin_unlock_irq(shost->host_lock);
2477 vport->num_disc_nodes = 0;
2478 /* go thru NPR list and issue ELS PLOGIs */
2479 if (vport->fc_npr_cnt)
2480 lpfc_els_disc_plogi(vport);
2481
2482 if (!vport->num_disc_nodes) {
2483 spin_lock_irq(shost->host_lock);
2484 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2485 spin_unlock_irq(shost->host_lock);
2486 lpfc_can_disctmo(vport);
2487 }
2488 vport->port_state = LPFC_VPORT_READY;
2489
2490 out:
2491 mempool_free(pmb, phba->mbox_mem_pool);
2492 return;
2493 }
2494
2495 /**
2496 * lpfc_create_static_vport - Read HBA config region to create static vports.
2497 * @phba: pointer to lpfc hba data structure.
2498 *
2499 * This routine issue a DUMP mailbox command for config region 22 to get
2500 * the list of static vports to be created. The function create vports
2501 * based on the information returned from the HBA.
2502 **/
2503 void
2504 lpfc_create_static_vport(struct lpfc_hba *phba)
2505 {
2506 LPFC_MBOXQ_t *pmb = NULL;
2507 MAILBOX_t *mb;
2508 struct static_vport_info *vport_info;
2509 int rc = 0, i;
2510 struct fc_vport_identifiers vport_id;
2511 struct fc_vport *new_fc_vport;
2512 struct Scsi_Host *shost;
2513 struct lpfc_vport *vport;
2514 uint16_t offset = 0;
2515 uint8_t *vport_buff;
2516 struct lpfc_dmabuf *mp;
2517 uint32_t byte_count = 0;
2518
2519 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2520 if (!pmb) {
2521 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2522 "0542 lpfc_create_static_vport failed to"
2523 " allocate mailbox memory\n");
2524 return;
2525 }
2526
2527 mb = &pmb->u.mb;
2528
2529 vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
2530 if (!vport_info) {
2531 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2532 "0543 lpfc_create_static_vport failed to"
2533 " allocate vport_info\n");
2534 mempool_free(pmb, phba->mbox_mem_pool);
2535 return;
2536 }
2537
2538 vport_buff = (uint8_t *) vport_info;
2539 do {
2540 if (lpfc_dump_static_vport(phba, pmb, offset))
2541 goto out;
2542
2543 pmb->vport = phba->pport;
2544 rc = lpfc_sli_issue_mbox_wait(phba, pmb, LPFC_MBOX_TMO);
2545
2546 if ((rc != MBX_SUCCESS) || mb->mbxStatus) {
2547 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2548 "0544 lpfc_create_static_vport failed to"
2549 " issue dump mailbox command ret 0x%x "
2550 "status 0x%x\n",
2551 rc, mb->mbxStatus);
2552 goto out;
2553 }
2554
2555 if (phba->sli_rev == LPFC_SLI_REV4) {
2556 byte_count = pmb->u.mqe.un.mb_words[5];
2557 mp = (struct lpfc_dmabuf *) pmb->context2;
2558 if (byte_count > sizeof(struct static_vport_info) -
2559 offset)
2560 byte_count = sizeof(struct static_vport_info)
2561 - offset;
2562 memcpy(vport_buff + offset, mp->virt, byte_count);
2563 offset += byte_count;
2564 } else {
2565 if (mb->un.varDmp.word_cnt >
2566 sizeof(struct static_vport_info) - offset)
2567 mb->un.varDmp.word_cnt =
2568 sizeof(struct static_vport_info)
2569 - offset;
2570 byte_count = mb->un.varDmp.word_cnt;
2571 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
2572 vport_buff + offset,
2573 byte_count);
2574
2575 offset += byte_count;
2576 }
2577
2578 } while (byte_count &&
2579 offset < sizeof(struct static_vport_info));
2580
2581
2582 if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
2583 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
2584 != VPORT_INFO_REV)) {
2585 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2586 "0545 lpfc_create_static_vport bad"
2587 " information header 0x%x 0x%x\n",
2588 le32_to_cpu(vport_info->signature),
2589 le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK);
2590
2591 goto out;
2592 }
2593
2594 shost = lpfc_shost_from_vport(phba->pport);
2595
2596 for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
2597 memset(&vport_id, 0, sizeof(vport_id));
2598 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
2599 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
2600 if (!vport_id.port_name || !vport_id.node_name)
2601 continue;
2602
2603 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
2604 vport_id.vport_type = FC_PORTTYPE_NPIV;
2605 vport_id.disable = false;
2606 new_fc_vport = fc_vport_create(shost, 0, &vport_id);
2607
2608 if (!new_fc_vport) {
2609 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2610 "0546 lpfc_create_static_vport failed to"
2611 " create vport\n");
2612 continue;
2613 }
2614
2615 vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
2616 vport->vport_flag |= STATIC_VPORT;
2617 }
2618
2619 out:
2620 kfree(vport_info);
2621 if (rc != MBX_TIMEOUT) {
2622 if (pmb->context2) {
2623 mp = (struct lpfc_dmabuf *) pmb->context2;
2624 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2625 kfree(mp);
2626 }
2627 mempool_free(pmb, phba->mbox_mem_pool);
2628 }
2629
2630 return;
2631 }
2632
2633 /*
2634 * This routine handles processing a Fabric REG_LOGIN mailbox
2635 * command upon completion. It is setup in the LPFC_MBOXQ
2636 * as the completion routine when the command is
2637 * handed off to the SLI layer.
2638 */
2639 void
2640 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2641 {
2642 struct lpfc_vport *vport = pmb->vport;
2643 MAILBOX_t *mb = &pmb->u.mb;
2644 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2645 struct lpfc_nodelist *ndlp;
2646
2647 ndlp = (struct lpfc_nodelist *) pmb->context2;
2648 pmb->context1 = NULL;
2649 pmb->context2 = NULL;
2650 if (mb->mbxStatus) {
2651 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2652 "0258 Register Fabric login error: 0x%x\n",
2653 mb->mbxStatus);
2654 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2655 kfree(mp);
2656 mempool_free(pmb, phba->mbox_mem_pool);
2657
2658 if (phba->fc_topology == TOPOLOGY_LOOP) {
2659 /* FLOGI failed, use loop map to make discovery list */
2660 lpfc_disc_list_loopmap(vport);
2661
2662 /* Start discovery */
2663 lpfc_disc_start(vport);
2664 /* Decrement the reference count to ndlp after the
2665 * reference to the ndlp are done.
2666 */
2667 lpfc_nlp_put(ndlp);
2668 return;
2669 }
2670
2671 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2672 /* Decrement the reference count to ndlp after the reference
2673 * to the ndlp are done.
2674 */
2675 lpfc_nlp_put(ndlp);
2676 return;
2677 }
2678
2679 ndlp->nlp_rpi = mb->un.varWords[0];
2680 ndlp->nlp_flag |= NLP_RPI_VALID;
2681 ndlp->nlp_type |= NLP_FABRIC;
2682 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2683
2684 if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
2685 lpfc_start_fdiscs(phba);
2686 lpfc_do_scr_ns_plogi(phba, vport);
2687 }
2688
2689 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2690 kfree(mp);
2691 mempool_free(pmb, phba->mbox_mem_pool);
2692
2693 /* Drop the reference count from the mbox at the end after
2694 * all the current reference to the ndlp have been done.
2695 */
2696 lpfc_nlp_put(ndlp);
2697 return;
2698 }
2699
2700 /*
2701 * This routine handles processing a NameServer REG_LOGIN mailbox
2702 * command upon completion. It is setup in the LPFC_MBOXQ
2703 * as the completion routine when the command is
2704 * handed off to the SLI layer.
2705 */
2706 void
2707 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2708 {
2709 MAILBOX_t *mb = &pmb->u.mb;
2710 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2711 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2712 struct lpfc_vport *vport = pmb->vport;
2713
2714 if (mb->mbxStatus) {
2715 out:
2716 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2717 "0260 Register NameServer error: 0x%x\n",
2718 mb->mbxStatus);
2719 /* decrement the node reference count held for this
2720 * callback function.
2721 */
2722 lpfc_nlp_put(ndlp);
2723 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2724 kfree(mp);
2725 mempool_free(pmb, phba->mbox_mem_pool);
2726
2727 /* If no other thread is using the ndlp, free it */
2728 lpfc_nlp_not_used(ndlp);
2729
2730 if (phba->fc_topology == TOPOLOGY_LOOP) {
2731 /*
2732 * RegLogin failed, use loop map to make discovery
2733 * list
2734 */
2735 lpfc_disc_list_loopmap(vport);
2736
2737 /* Start discovery */
2738 lpfc_disc_start(vport);
2739 return;
2740 }
2741 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2742 return;
2743 }
2744
2745 pmb->context1 = NULL;
2746
2747 ndlp->nlp_rpi = mb->un.varWords[0];
2748 ndlp->nlp_flag |= NLP_RPI_VALID;
2749 ndlp->nlp_type |= NLP_FABRIC;
2750 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2751
2752 if (vport->port_state < LPFC_VPORT_READY) {
2753 /* Link up discovery requires Fabric registration. */
2754 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
2755 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
2756 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
2757 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
2758 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
2759
2760 /* Issue SCR just before NameServer GID_FT Query */
2761 lpfc_issue_els_scr(vport, SCR_DID, 0);
2762 }
2763
2764 vport->fc_ns_retry = 0;
2765 /* Good status, issue CT Request to NameServer */
2766 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
2767 /* Cannot issue NameServer Query, so finish up discovery */
2768 goto out;
2769 }
2770
2771 /* decrement the node reference count held for this
2772 * callback function.
2773 */
2774 lpfc_nlp_put(ndlp);
2775 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2776 kfree(mp);
2777 mempool_free(pmb, phba->mbox_mem_pool);
2778
2779 return;
2780 }
2781
2782 static void
2783 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2784 {
2785 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2786 struct fc_rport *rport;
2787 struct lpfc_rport_data *rdata;
2788 struct fc_rport_identifiers rport_ids;
2789 struct lpfc_hba *phba = vport->phba;
2790
2791 /* Remote port has reappeared. Re-register w/ FC transport */
2792 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
2793 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
2794 rport_ids.port_id = ndlp->nlp_DID;
2795 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
2796
2797 /*
2798 * We leave our node pointer in rport->dd_data when we unregister a
2799 * FCP target port. But fc_remote_port_add zeros the space to which
2800 * rport->dd_data points. So, if we're reusing a previously
2801 * registered port, drop the reference that we took the last time we
2802 * registered the port.
2803 */
2804 if (ndlp->rport && ndlp->rport->dd_data &&
2805 ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
2806 lpfc_nlp_put(ndlp);
2807
2808 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
2809 "rport add: did:x%x flg:x%x type x%x",
2810 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
2811
2812 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
2813 if (!rport || !get_device(&rport->dev)) {
2814 dev_printk(KERN_WARNING, &phba->pcidev->dev,
2815 "Warning: fc_remote_port_add failed\n");
2816 return;
2817 }
2818
2819 /* initialize static port data */
2820 rport->maxframe_size = ndlp->nlp_maxframe;
2821 rport->supported_classes = ndlp->nlp_class_sup;
2822 rdata = rport->dd_data;
2823 rdata->pnode = lpfc_nlp_get(ndlp);
2824
2825 if (ndlp->nlp_type & NLP_FCP_TARGET)
2826 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
2827 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
2828 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
2829
2830
2831 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
2832 fc_remote_port_rolechg(rport, rport_ids.roles);
2833
2834 if ((rport->scsi_target_id != -1) &&
2835 (rport->scsi_target_id < LPFC_MAX_TARGET)) {
2836 ndlp->nlp_sid = rport->scsi_target_id;
2837 }
2838 return;
2839 }
2840
2841 static void
2842 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
2843 {
2844 struct fc_rport *rport = ndlp->rport;
2845
2846 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
2847 "rport delete: did:x%x flg:x%x type x%x",
2848 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
2849
2850 fc_remote_port_delete(rport);
2851
2852 return;
2853 }
2854
2855 static void
2856 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
2857 {
2858 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2859
2860 spin_lock_irq(shost->host_lock);
2861 switch (state) {
2862 case NLP_STE_UNUSED_NODE:
2863 vport->fc_unused_cnt += count;
2864 break;
2865 case NLP_STE_PLOGI_ISSUE:
2866 vport->fc_plogi_cnt += count;
2867 break;
2868 case NLP_STE_ADISC_ISSUE:
2869 vport->fc_adisc_cnt += count;
2870 break;
2871 case NLP_STE_REG_LOGIN_ISSUE:
2872 vport->fc_reglogin_cnt += count;
2873 break;
2874 case NLP_STE_PRLI_ISSUE:
2875 vport->fc_prli_cnt += count;
2876 break;
2877 case NLP_STE_UNMAPPED_NODE:
2878 vport->fc_unmap_cnt += count;
2879 break;
2880 case NLP_STE_MAPPED_NODE:
2881 vport->fc_map_cnt += count;
2882 break;
2883 case NLP_STE_NPR_NODE:
2884 vport->fc_npr_cnt += count;
2885 break;
2886 }
2887 spin_unlock_irq(shost->host_lock);
2888 }
2889
2890 static void
2891 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2892 int old_state, int new_state)
2893 {
2894 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2895
2896 if (new_state == NLP_STE_UNMAPPED_NODE) {
2897 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
2898 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
2899 ndlp->nlp_type |= NLP_FC_NODE;
2900 }
2901 if (new_state == NLP_STE_MAPPED_NODE)
2902 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
2903 if (new_state == NLP_STE_NPR_NODE)
2904 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
2905
2906 /* Transport interface */
2907 if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
2908 old_state == NLP_STE_UNMAPPED_NODE)) {
2909 vport->phba->nport_event_cnt++;
2910 lpfc_unregister_remote_port(ndlp);
2911 }
2912
2913 if (new_state == NLP_STE_MAPPED_NODE ||
2914 new_state == NLP_STE_UNMAPPED_NODE) {
2915 vport->phba->nport_event_cnt++;
2916 /*
2917 * Tell the fc transport about the port, if we haven't
2918 * already. If we have, and it's a scsi entity, be
2919 * sure to unblock any attached scsi devices
2920 */
2921 lpfc_register_remote_port(vport, ndlp);
2922 }
2923 if ((new_state == NLP_STE_MAPPED_NODE) &&
2924 (vport->stat_data_enabled)) {
2925 /*
2926 * A new target is discovered, if there is no buffer for
2927 * statistical data collection allocate buffer.
2928 */
2929 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
2930 sizeof(struct lpfc_scsicmd_bkt),
2931 GFP_KERNEL);
2932
2933 if (!ndlp->lat_data)
2934 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
2935 "0286 lpfc_nlp_state_cleanup failed to "
2936 "allocate statistical data buffer DID "
2937 "0x%x\n", ndlp->nlp_DID);
2938 }
2939 /*
2940 * if we added to Mapped list, but the remote port
2941 * registration failed or assigned a target id outside
2942 * our presentable range - move the node to the
2943 * Unmapped List
2944 */
2945 if (new_state == NLP_STE_MAPPED_NODE &&
2946 (!ndlp->rport ||
2947 ndlp->rport->scsi_target_id == -1 ||
2948 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
2949 spin_lock_irq(shost->host_lock);
2950 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
2951 spin_unlock_irq(shost->host_lock);
2952 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2953 }
2954 }
2955
2956 static char *
2957 lpfc_nlp_state_name(char *buffer, size_t size, int state)
2958 {
2959 static char *states[] = {
2960 [NLP_STE_UNUSED_NODE] = "UNUSED",
2961 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
2962 [NLP_STE_ADISC_ISSUE] = "ADISC",
2963 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
2964 [NLP_STE_PRLI_ISSUE] = "PRLI",
2965 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
2966 [NLP_STE_MAPPED_NODE] = "MAPPED",
2967 [NLP_STE_NPR_NODE] = "NPR",
2968 };
2969
2970 if (state < NLP_STE_MAX_STATE && states[state])
2971 strlcpy(buffer, states[state], size);
2972 else
2973 snprintf(buffer, size, "unknown (%d)", state);
2974 return buffer;
2975 }
2976
2977 void
2978 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2979 int state)
2980 {
2981 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2982 int old_state = ndlp->nlp_state;
2983 char name1[16], name2[16];
2984
2985 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2986 "0904 NPort state transition x%06x, %s -> %s\n",
2987 ndlp->nlp_DID,
2988 lpfc_nlp_state_name(name1, sizeof(name1), old_state),
2989 lpfc_nlp_state_name(name2, sizeof(name2), state));
2990
2991 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2992 "node statechg did:x%x old:%d ste:%d",
2993 ndlp->nlp_DID, old_state, state);
2994
2995 if (old_state == NLP_STE_NPR_NODE &&
2996 state != NLP_STE_NPR_NODE)
2997 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2998 if (old_state == NLP_STE_UNMAPPED_NODE) {
2999 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
3000 ndlp->nlp_type &= ~NLP_FC_NODE;
3001 }
3002
3003 if (list_empty(&ndlp->nlp_listp)) {
3004 spin_lock_irq(shost->host_lock);
3005 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
3006 spin_unlock_irq(shost->host_lock);
3007 } else if (old_state)
3008 lpfc_nlp_counters(vport, old_state, -1);
3009
3010 ndlp->nlp_state = state;
3011 lpfc_nlp_counters(vport, state, 1);
3012 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
3013 }
3014
3015 void
3016 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3017 {
3018 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3019
3020 if (list_empty(&ndlp->nlp_listp)) {
3021 spin_lock_irq(shost->host_lock);
3022 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
3023 spin_unlock_irq(shost->host_lock);
3024 }
3025 }
3026
3027 void
3028 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3029 {
3030 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3031
3032 lpfc_cancel_retry_delay_tmo(vport, ndlp);
3033 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
3034 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
3035 spin_lock_irq(shost->host_lock);
3036 list_del_init(&ndlp->nlp_listp);
3037 spin_unlock_irq(shost->host_lock);
3038 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
3039 NLP_STE_UNUSED_NODE);
3040 }
3041
3042 static void
3043 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3044 {
3045 lpfc_cancel_retry_delay_tmo(vport, ndlp);
3046 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
3047 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
3048 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
3049 NLP_STE_UNUSED_NODE);
3050 }
3051 /**
3052 * lpfc_initialize_node - Initialize all fields of node object
3053 * @vport: Pointer to Virtual Port object.
3054 * @ndlp: Pointer to FC node object.
3055 * @did: FC_ID of the node.
3056 *
3057 * This function is always called when node object need to be initialized.
3058 * It initializes all the fields of the node object. Although the reference
3059 * to phba from @ndlp can be obtained indirectly through it's reference to
3060 * @vport, a direct reference to phba is taken here by @ndlp. This is due
3061 * to the life-span of the @ndlp might go beyond the existence of @vport as
3062 * the final release of ndlp is determined by its reference count. And, the
3063 * operation on @ndlp needs the reference to phba.
3064 **/
3065 static inline void
3066 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3067 uint32_t did)
3068 {
3069 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
3070 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
3071 init_timer(&ndlp->nlp_delayfunc);
3072 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
3073 ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
3074 ndlp->nlp_DID = did;
3075 ndlp->vport = vport;
3076 ndlp->phba = vport->phba;
3077 ndlp->nlp_sid = NLP_NO_SID;
3078 kref_init(&ndlp->kref);
3079 NLP_INT_NODE_ACT(ndlp);
3080 atomic_set(&ndlp->cmd_pending, 0);
3081 ndlp->cmd_qdepth = LPFC_MAX_TGT_QDEPTH;
3082 }
3083
3084 struct lpfc_nodelist *
3085 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3086 int state)
3087 {
3088 struct lpfc_hba *phba = vport->phba;
3089 uint32_t did;
3090 unsigned long flags;
3091
3092 if (!ndlp)
3093 return NULL;
3094
3095 spin_lock_irqsave(&phba->ndlp_lock, flags);
3096 /* The ndlp should not be in memory free mode */
3097 if (NLP_CHK_FREE_REQ(ndlp)) {
3098 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3099 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3100 "0277 lpfc_enable_node: ndlp:x%p "
3101 "usgmap:x%x refcnt:%d\n",
3102 (void *)ndlp, ndlp->nlp_usg_map,
3103 atomic_read(&ndlp->kref.refcount));
3104 return NULL;
3105 }
3106 /* The ndlp should not already be in active mode */
3107 if (NLP_CHK_NODE_ACT(ndlp)) {
3108 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3109 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3110 "0278 lpfc_enable_node: ndlp:x%p "
3111 "usgmap:x%x refcnt:%d\n",
3112 (void *)ndlp, ndlp->nlp_usg_map,
3113 atomic_read(&ndlp->kref.refcount));
3114 return NULL;
3115 }
3116
3117 /* Keep the original DID */
3118 did = ndlp->nlp_DID;
3119
3120 /* re-initialize ndlp except of ndlp linked list pointer */
3121 memset((((char *)ndlp) + sizeof (struct list_head)), 0,
3122 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
3123 lpfc_initialize_node(vport, ndlp, did);
3124
3125 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3126
3127 if (state != NLP_STE_UNUSED_NODE)
3128 lpfc_nlp_set_state(vport, ndlp, state);
3129
3130 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
3131 "node enable: did:x%x",
3132 ndlp->nlp_DID, 0, 0);
3133 return ndlp;
3134 }
3135
3136 void
3137 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3138 {
3139 /*
3140 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
3141 * be used if we wish to issue the "last" lpfc_nlp_put() to remove
3142 * the ndlp from the vport. The ndlp marked as UNUSED on the list
3143 * until ALL other outstanding threads have completed. We check
3144 * that the ndlp not already in the UNUSED state before we proceed.
3145 */
3146 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
3147 return;
3148 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
3149 lpfc_nlp_put(ndlp);
3150 return;
3151 }
3152
3153 /*
3154 * Start / ReStart rescue timer for Discovery / RSCN handling
3155 */
3156 void
3157 lpfc_set_disctmo(struct lpfc_vport *vport)
3158 {
3159 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3160 struct lpfc_hba *phba = vport->phba;
3161 uint32_t tmo;
3162
3163 if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
3164 /* For FAN, timeout should be greater than edtov */
3165 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
3166 } else {
3167 /* Normal discovery timeout should be > than ELS/CT timeout
3168 * FC spec states we need 3 * ratov for CT requests
3169 */
3170 tmo = ((phba->fc_ratov * 3) + 3);
3171 }
3172
3173
3174 if (!timer_pending(&vport->fc_disctmo)) {
3175 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3176 "set disc timer: tmo:x%x state:x%x flg:x%x",
3177 tmo, vport->port_state, vport->fc_flag);
3178 }
3179
3180 mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
3181 spin_lock_irq(shost->host_lock);
3182 vport->fc_flag |= FC_DISC_TMO;
3183 spin_unlock_irq(shost->host_lock);
3184
3185 /* Start Discovery Timer state <hba_state> */
3186 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3187 "0247 Start Discovery Timer state x%x "
3188 "Data: x%x x%lx x%x x%x\n",
3189 vport->port_state, tmo,
3190 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
3191 vport->fc_adisc_cnt);
3192
3193 return;
3194 }
3195
3196 /*
3197 * Cancel rescue timer for Discovery / RSCN handling
3198 */
3199 int
3200 lpfc_can_disctmo(struct lpfc_vport *vport)
3201 {
3202 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3203 unsigned long iflags;
3204
3205 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3206 "can disc timer: state:x%x rtry:x%x flg:x%x",
3207 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
3208
3209 /* Turn off discovery timer if its running */
3210 if (vport->fc_flag & FC_DISC_TMO) {
3211 spin_lock_irqsave(shost->host_lock, iflags);
3212 vport->fc_flag &= ~FC_DISC_TMO;
3213 spin_unlock_irqrestore(shost->host_lock, iflags);
3214 del_timer_sync(&vport->fc_disctmo);
3215 spin_lock_irqsave(&vport->work_port_lock, iflags);
3216 vport->work_port_events &= ~WORKER_DISC_TMO;
3217 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
3218 }
3219
3220 /* Cancel Discovery Timer state <hba_state> */
3221 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3222 "0248 Cancel Discovery Timer state x%x "
3223 "Data: x%x x%x x%x\n",
3224 vport->port_state, vport->fc_flag,
3225 vport->fc_plogi_cnt, vport->fc_adisc_cnt);
3226 return 0;
3227 }
3228
3229 /*
3230 * Check specified ring for outstanding IOCB on the SLI queue
3231 * Return true if iocb matches the specified nport
3232 */
3233 int
3234 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
3235 struct lpfc_sli_ring *pring,
3236 struct lpfc_iocbq *iocb,
3237 struct lpfc_nodelist *ndlp)
3238 {
3239 struct lpfc_sli *psli = &phba->sli;
3240 IOCB_t *icmd = &iocb->iocb;
3241 struct lpfc_vport *vport = ndlp->vport;
3242
3243 if (iocb->vport != vport)
3244 return 0;
3245
3246 if (pring->ringno == LPFC_ELS_RING) {
3247 switch (icmd->ulpCommand) {
3248 case CMD_GEN_REQUEST64_CR:
3249 if (iocb->context_un.ndlp == ndlp)
3250 return 1;
3251 case CMD_ELS_REQUEST64_CR:
3252 if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
3253 return 1;
3254 case CMD_XMIT_ELS_RSP64_CX:
3255 if (iocb->context1 == (uint8_t *) ndlp)
3256 return 1;
3257 }
3258 } else if (pring->ringno == psli->extra_ring) {
3259
3260 } else if (pring->ringno == psli->fcp_ring) {
3261 /* Skip match check if waiting to relogin to FCP target */
3262 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
3263 (ndlp->nlp_flag & NLP_DELAY_TMO)) {
3264 return 0;
3265 }
3266 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
3267 return 1;
3268 }
3269 } else if (pring->ringno == psli->next_ring) {
3270
3271 }
3272 return 0;
3273 }
3274
3275 /*
3276 * Free resources / clean up outstanding I/Os
3277 * associated with nlp_rpi in the LPFC_NODELIST entry.
3278 */
3279 static int
3280 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
3281 {
3282 LIST_HEAD(completions);
3283 struct lpfc_sli *psli;
3284 struct lpfc_sli_ring *pring;
3285 struct lpfc_iocbq *iocb, *next_iocb;
3286 uint32_t i;
3287
3288 lpfc_fabric_abort_nport(ndlp);
3289
3290 /*
3291 * Everything that matches on txcmplq will be returned
3292 * by firmware with a no rpi error.
3293 */
3294 psli = &phba->sli;
3295 if (ndlp->nlp_flag & NLP_RPI_VALID) {
3296 /* Now process each ring */
3297 for (i = 0; i < psli->num_rings; i++) {
3298 pring = &psli->ring[i];
3299
3300 spin_lock_irq(&phba->hbalock);
3301 list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
3302 list) {
3303 /*
3304 * Check to see if iocb matches the nport we are
3305 * looking for
3306 */
3307 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
3308 ndlp))) {
3309 /* It matches, so deque and call compl
3310 with an error */
3311 list_move_tail(&iocb->list,
3312 &completions);
3313 pring->txq_cnt--;
3314 }
3315 }
3316 spin_unlock_irq(&phba->hbalock);
3317 }
3318 }
3319
3320 /* Cancel all the IOCBs from the completions list */
3321 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
3322 IOERR_SLI_ABORTED);
3323
3324 return 0;
3325 }
3326
3327 /*
3328 * Free rpi associated with LPFC_NODELIST entry.
3329 * This routine is called from lpfc_freenode(), when we are removing
3330 * a LPFC_NODELIST entry. It is also called if the driver initiates a
3331 * LOGO that completes successfully, and we are waiting to PLOGI back
3332 * to the remote NPort. In addition, it is called after we receive
3333 * and unsolicated ELS cmd, send back a rsp, the rsp completes and
3334 * we are waiting to PLOGI back to the remote NPort.
3335 */
3336 int
3337 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3338 {
3339 struct lpfc_hba *phba = vport->phba;
3340 LPFC_MBOXQ_t *mbox;
3341 int rc;
3342
3343 if (ndlp->nlp_flag & NLP_RPI_VALID) {
3344 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3345 if (mbox) {
3346 lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
3347 mbox->vport = vport;
3348 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3349 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3350 if (rc == MBX_NOT_FINISHED)
3351 mempool_free(mbox, phba->mbox_mem_pool);
3352 }
3353 lpfc_no_rpi(phba, ndlp);
3354 ndlp->nlp_rpi = 0;
3355 ndlp->nlp_flag &= ~NLP_RPI_VALID;
3356 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
3357 return 1;
3358 }
3359 return 0;
3360 }
3361
3362 /**
3363 * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba.
3364 * @phba: pointer to lpfc hba data structure.
3365 *
3366 * This routine is invoked to unregister all the currently registered RPIs
3367 * to the HBA.
3368 **/
3369 void
3370 lpfc_unreg_hba_rpis(struct lpfc_hba *phba)
3371 {
3372 struct lpfc_vport **vports;
3373 struct lpfc_nodelist *ndlp;
3374 struct Scsi_Host *shost;
3375 int i;
3376
3377 vports = lpfc_create_vport_work_array(phba);
3378 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3379 shost = lpfc_shost_from_vport(vports[i]);
3380 spin_lock_irq(shost->host_lock);
3381 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
3382 if (ndlp->nlp_flag & NLP_RPI_VALID)
3383 lpfc_unreg_rpi(vports[i], ndlp);
3384 }
3385 spin_unlock_irq(shost->host_lock);
3386 }
3387 lpfc_destroy_vport_work_array(phba, vports);
3388 }
3389
3390 void
3391 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
3392 {
3393 struct lpfc_hba *phba = vport->phba;
3394 LPFC_MBOXQ_t *mbox;
3395 int rc;
3396
3397 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3398 if (mbox) {
3399 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
3400 mbox->vport = vport;
3401 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3402 mbox->context1 = NULL;
3403 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
3404 if (rc != MBX_TIMEOUT)
3405 mempool_free(mbox, phba->mbox_mem_pool);
3406
3407 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
3408 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
3409 "1836 Could not issue "
3410 "unreg_login(all_rpis) status %d\n", rc);
3411 }
3412 }
3413
3414 void
3415 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
3416 {
3417 struct lpfc_hba *phba = vport->phba;
3418 LPFC_MBOXQ_t *mbox;
3419 int rc;
3420
3421 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3422 if (mbox) {
3423 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
3424 mbox->vport = vport;
3425 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3426 mbox->context1 = NULL;
3427 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
3428 if (rc != MBX_TIMEOUT)
3429 mempool_free(mbox, phba->mbox_mem_pool);
3430
3431 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
3432 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
3433 "1815 Could not issue "
3434 "unreg_did (default rpis) status %d\n",
3435 rc);
3436 }
3437 }
3438
3439 /*
3440 * Free resources associated with LPFC_NODELIST entry
3441 * so it can be freed.
3442 */
3443 static int
3444 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3445 {
3446 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3447 struct lpfc_hba *phba = vport->phba;
3448 LPFC_MBOXQ_t *mb, *nextmb;
3449 struct lpfc_dmabuf *mp;
3450
3451 /* Cleanup node for NPort <nlp_DID> */
3452 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3453 "0900 Cleanup node for NPort x%x "
3454 "Data: x%x x%x x%x\n",
3455 ndlp->nlp_DID, ndlp->nlp_flag,
3456 ndlp->nlp_state, ndlp->nlp_rpi);
3457 if (NLP_CHK_FREE_REQ(ndlp)) {
3458 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3459 "0280 lpfc_cleanup_node: ndlp:x%p "
3460 "usgmap:x%x refcnt:%d\n",
3461 (void *)ndlp, ndlp->nlp_usg_map,
3462 atomic_read(&ndlp->kref.refcount));
3463 lpfc_dequeue_node(vport, ndlp);
3464 } else {
3465 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3466 "0281 lpfc_cleanup_node: ndlp:x%p "
3467 "usgmap:x%x refcnt:%d\n",
3468 (void *)ndlp, ndlp->nlp_usg_map,
3469 atomic_read(&ndlp->kref.refcount));
3470 lpfc_disable_node(vport, ndlp);
3471 }
3472
3473 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
3474 if ((mb = phba->sli.mbox_active)) {
3475 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
3476 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
3477 mb->context2 = NULL;
3478 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3479 }
3480 }
3481
3482 spin_lock_irq(&phba->hbalock);
3483 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
3484 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
3485 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
3486 mp = (struct lpfc_dmabuf *) (mb->context1);
3487 if (mp) {
3488 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
3489 kfree(mp);
3490 }
3491 list_del(&mb->list);
3492 mempool_free(mb, phba->mbox_mem_pool);
3493 /* We shall not invoke the lpfc_nlp_put to decrement
3494 * the ndlp reference count as we are in the process
3495 * of lpfc_nlp_release.
3496 */
3497 }
3498 }
3499 spin_unlock_irq(&phba->hbalock);
3500
3501 lpfc_els_abort(phba, ndlp);
3502
3503 spin_lock_irq(shost->host_lock);
3504 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
3505 spin_unlock_irq(shost->host_lock);
3506
3507 ndlp->nlp_last_elscmd = 0;
3508 del_timer_sync(&ndlp->nlp_delayfunc);
3509
3510 list_del_init(&ndlp->els_retry_evt.evt_listp);
3511 list_del_init(&ndlp->dev_loss_evt.evt_listp);
3512
3513 lpfc_unreg_rpi(vport, ndlp);
3514
3515 return 0;
3516 }
3517
3518 /*
3519 * Check to see if we can free the nlp back to the freelist.
3520 * If we are in the middle of using the nlp in the discovery state
3521 * machine, defer the free till we reach the end of the state machine.
3522 */
3523 static void
3524 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3525 {
3526 struct lpfc_hba *phba = vport->phba;
3527 struct lpfc_rport_data *rdata;
3528 LPFC_MBOXQ_t *mbox;
3529 int rc;
3530
3531 lpfc_cancel_retry_delay_tmo(vport, ndlp);
3532 if ((ndlp->nlp_flag & NLP_DEFER_RM) &&
3533 !(ndlp->nlp_flag & NLP_RPI_VALID)) {
3534 /* For this case we need to cleanup the default rpi
3535 * allocated by the firmware.
3536 */
3537 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
3538 != NULL) {
3539 rc = lpfc_reg_rpi(phba, vport->vpi, ndlp->nlp_DID,
3540 (uint8_t *) &vport->fc_sparam, mbox, 0);
3541 if (rc) {
3542 mempool_free(mbox, phba->mbox_mem_pool);
3543 }
3544 else {
3545 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
3546 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
3547 mbox->vport = vport;
3548 mbox->context2 = NULL;
3549 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3550 if (rc == MBX_NOT_FINISHED) {
3551 mempool_free(mbox, phba->mbox_mem_pool);
3552 }
3553 }
3554 }
3555 }
3556 lpfc_cleanup_node(vport, ndlp);
3557
3558 /*
3559 * We can get here with a non-NULL ndlp->rport because when we
3560 * unregister a rport we don't break the rport/node linkage. So if we
3561 * do, make sure we don't leaving any dangling pointers behind.
3562 */
3563 if (ndlp->rport) {
3564 rdata = ndlp->rport->dd_data;
3565 rdata->pnode = NULL;
3566 ndlp->rport = NULL;
3567 }
3568 }
3569
3570 static int
3571 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3572 uint32_t did)
3573 {
3574 D_ID mydid, ndlpdid, matchdid;
3575
3576 if (did == Bcast_DID)
3577 return 0;
3578
3579 /* First check for Direct match */
3580 if (ndlp->nlp_DID == did)
3581 return 1;
3582
3583 /* Next check for area/domain identically equals 0 match */
3584 mydid.un.word = vport->fc_myDID;
3585 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
3586 return 0;
3587 }
3588
3589 matchdid.un.word = did;
3590 ndlpdid.un.word = ndlp->nlp_DID;
3591 if (matchdid.un.b.id == ndlpdid.un.b.id) {
3592 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
3593 (mydid.un.b.area == matchdid.un.b.area)) {
3594 if ((ndlpdid.un.b.domain == 0) &&
3595 (ndlpdid.un.b.area == 0)) {
3596 if (ndlpdid.un.b.id)
3597 return 1;
3598 }
3599 return 0;
3600 }
3601
3602 matchdid.un.word = ndlp->nlp_DID;
3603 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
3604 (mydid.un.b.area == ndlpdid.un.b.area)) {
3605 if ((matchdid.un.b.domain == 0) &&
3606 (matchdid.un.b.area == 0)) {
3607 if (matchdid.un.b.id)
3608 return 1;
3609 }
3610 }
3611 }
3612 return 0;
3613 }
3614
3615 /* Search for a nodelist entry */
3616 static struct lpfc_nodelist *
3617 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
3618 {
3619 struct lpfc_nodelist *ndlp;
3620 uint32_t data1;
3621
3622 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
3623 if (lpfc_matchdid(vport, ndlp, did)) {
3624 data1 = (((uint32_t) ndlp->nlp_state << 24) |
3625 ((uint32_t) ndlp->nlp_xri << 16) |
3626 ((uint32_t) ndlp->nlp_type << 8) |
3627 ((uint32_t) ndlp->nlp_rpi & 0xff));
3628 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3629 "0929 FIND node DID "
3630 "Data: x%p x%x x%x x%x\n",
3631 ndlp, ndlp->nlp_DID,
3632 ndlp->nlp_flag, data1);
3633 return ndlp;
3634 }
3635 }
3636
3637 /* FIND node did <did> NOT FOUND */
3638 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3639 "0932 FIND node did x%x NOT FOUND.\n", did);
3640 return NULL;
3641 }
3642
3643 struct lpfc_nodelist *
3644 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
3645 {
3646 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3647 struct lpfc_nodelist *ndlp;
3648
3649 spin_lock_irq(shost->host_lock);
3650 ndlp = __lpfc_findnode_did(vport, did);
3651 spin_unlock_irq(shost->host_lock);
3652 return ndlp;
3653 }
3654
3655 struct lpfc_nodelist *
3656 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
3657 {
3658 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3659 struct lpfc_nodelist *ndlp;
3660
3661 ndlp = lpfc_findnode_did(vport, did);
3662 if (!ndlp) {
3663 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
3664 lpfc_rscn_payload_check(vport, did) == 0)
3665 return NULL;
3666 ndlp = (struct lpfc_nodelist *)
3667 mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
3668 if (!ndlp)
3669 return NULL;
3670 lpfc_nlp_init(vport, ndlp, did);
3671 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
3672 spin_lock_irq(shost->host_lock);
3673 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
3674 spin_unlock_irq(shost->host_lock);
3675 return ndlp;
3676 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
3677 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
3678 if (!ndlp)
3679 return NULL;
3680 spin_lock_irq(shost->host_lock);
3681 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
3682 spin_unlock_irq(shost->host_lock);
3683 return ndlp;
3684 }
3685
3686 if ((vport->fc_flag & FC_RSCN_MODE) &&
3687 !(vport->fc_flag & FC_NDISC_ACTIVE)) {
3688 if (lpfc_rscn_payload_check(vport, did)) {
3689 /* If we've already recieved a PLOGI from this NPort
3690 * we don't need to try to discover it again.
3691 */
3692 if (ndlp->nlp_flag & NLP_RCV_PLOGI)
3693 return NULL;
3694
3695 /* Since this node is marked for discovery,
3696 * delay timeout is not needed.
3697 */
3698 lpfc_cancel_retry_delay_tmo(vport, ndlp);
3699 spin_lock_irq(shost->host_lock);
3700 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
3701 spin_unlock_irq(shost->host_lock);
3702 } else
3703 ndlp = NULL;
3704 } else {
3705 /* If we've already recieved a PLOGI from this NPort,
3706 * or we are already in the process of discovery on it,
3707 * we don't need to try to discover it again.
3708 */
3709 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
3710 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
3711 ndlp->nlp_flag & NLP_RCV_PLOGI)
3712 return NULL;
3713 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
3714 spin_lock_irq(shost->host_lock);
3715 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
3716 spin_unlock_irq(shost->host_lock);
3717 }
3718 return ndlp;
3719 }
3720
3721 /* Build a list of nodes to discover based on the loopmap */
3722 void
3723 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
3724 {
3725 struct lpfc_hba *phba = vport->phba;
3726 int j;
3727 uint32_t alpa, index;
3728
3729 if (!lpfc_is_link_up(phba))
3730 return;
3731
3732 if (phba->fc_topology != TOPOLOGY_LOOP)
3733 return;
3734
3735 /* Check for loop map present or not */
3736 if (phba->alpa_map[0]) {
3737 for (j = 1; j <= phba->alpa_map[0]; j++) {
3738 alpa = phba->alpa_map[j];
3739 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
3740 continue;
3741 lpfc_setup_disc_node(vport, alpa);
3742 }
3743 } else {
3744 /* No alpamap, so try all alpa's */
3745 for (j = 0; j < FC_MAXLOOP; j++) {
3746 /* If cfg_scan_down is set, start from highest
3747 * ALPA (0xef) to lowest (0x1).
3748 */
3749 if (vport->cfg_scan_down)
3750 index = j;
3751 else
3752 index = FC_MAXLOOP - j - 1;
3753 alpa = lpfcAlpaArray[index];
3754 if ((vport->fc_myDID & 0xff) == alpa)
3755 continue;
3756 lpfc_setup_disc_node(vport, alpa);
3757 }
3758 }
3759 return;
3760 }
3761
3762 void
3763 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
3764 {
3765 LPFC_MBOXQ_t *mbox;
3766 struct lpfc_sli *psli = &phba->sli;
3767 struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
3768 struct lpfc_sli_ring *fcp_ring = &psli->ring[psli->fcp_ring];
3769 struct lpfc_sli_ring *next_ring = &psli->ring[psli->next_ring];
3770 int rc;
3771
3772 /*
3773 * if it's not a physical port or if we already send
3774 * clear_la then don't send it.
3775 */
3776 if ((phba->link_state >= LPFC_CLEAR_LA) ||
3777 (vport->port_type != LPFC_PHYSICAL_PORT) ||
3778 (phba->sli_rev == LPFC_SLI_REV4))
3779 return;
3780
3781 /* Link up discovery */
3782 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
3783 phba->link_state = LPFC_CLEAR_LA;
3784 lpfc_clear_la(phba, mbox);
3785 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
3786 mbox->vport = vport;
3787 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3788 if (rc == MBX_NOT_FINISHED) {
3789 mempool_free(mbox, phba->mbox_mem_pool);
3790 lpfc_disc_flush_list(vport);
3791 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
3792 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
3793 next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
3794 phba->link_state = LPFC_HBA_ERROR;
3795 }
3796 }
3797 }
3798
3799 /* Reg_vpi to tell firmware to resume normal operations */
3800 void
3801 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
3802 {
3803 LPFC_MBOXQ_t *regvpimbox;
3804
3805 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3806 if (regvpimbox) {
3807 lpfc_reg_vpi(vport, regvpimbox);
3808 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
3809 regvpimbox->vport = vport;
3810 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
3811 == MBX_NOT_FINISHED) {
3812 mempool_free(regvpimbox, phba->mbox_mem_pool);
3813 }
3814 }
3815 }
3816
3817 /* Start Link up / RSCN discovery on NPR nodes */
3818 void
3819 lpfc_disc_start(struct lpfc_vport *vport)
3820 {
3821 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3822 struct lpfc_hba *phba = vport->phba;
3823 uint32_t num_sent;
3824 uint32_t clear_la_pending;
3825 int did_changed;
3826
3827 if (!lpfc_is_link_up(phba))
3828 return;
3829
3830 if (phba->link_state == LPFC_CLEAR_LA)
3831 clear_la_pending = 1;
3832 else
3833 clear_la_pending = 0;
3834
3835 if (vport->port_state < LPFC_VPORT_READY)
3836 vport->port_state = LPFC_DISC_AUTH;
3837
3838 lpfc_set_disctmo(vport);
3839
3840 if (vport->fc_prevDID == vport->fc_myDID)
3841 did_changed = 0;
3842 else
3843 did_changed = 1;
3844
3845 vport->fc_prevDID = vport->fc_myDID;
3846 vport->num_disc_nodes = 0;
3847
3848 /* Start Discovery state <hba_state> */
3849 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3850 "0202 Start Discovery hba state x%x "
3851 "Data: x%x x%x x%x\n",
3852 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
3853 vport->fc_adisc_cnt);
3854
3855 /* First do ADISCs - if any */
3856 num_sent = lpfc_els_disc_adisc(vport);
3857
3858 if (num_sent)
3859 return;
3860
3861 /*
3862 * For SLI3, cmpl_reg_vpi will set port_state to READY, and
3863 * continue discovery.
3864 */
3865 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
3866 !(vport->fc_flag & FC_PT2PT) &&
3867 !(vport->fc_flag & FC_RSCN_MODE) &&
3868 (phba->sli_rev < LPFC_SLI_REV4)) {
3869 lpfc_issue_reg_vpi(phba, vport);
3870 return;
3871 }
3872
3873 /*
3874 * For SLI2, we need to set port_state to READY and continue
3875 * discovery.
3876 */
3877 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
3878 /* If we get here, there is nothing to ADISC */
3879 if (vport->port_type == LPFC_PHYSICAL_PORT)
3880 lpfc_issue_clear_la(phba, vport);
3881
3882 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
3883 vport->num_disc_nodes = 0;
3884 /* go thru NPR nodes and issue ELS PLOGIs */
3885 if (vport->fc_npr_cnt)
3886 lpfc_els_disc_plogi(vport);
3887
3888 if (!vport->num_disc_nodes) {
3889 spin_lock_irq(shost->host_lock);
3890 vport->fc_flag &= ~FC_NDISC_ACTIVE;
3891 spin_unlock_irq(shost->host_lock);
3892 lpfc_can_disctmo(vport);
3893 }
3894 }
3895 vport->port_state = LPFC_VPORT_READY;
3896 } else {
3897 /* Next do PLOGIs - if any */
3898 num_sent = lpfc_els_disc_plogi(vport);
3899
3900 if (num_sent)
3901 return;
3902
3903 if (vport->fc_flag & FC_RSCN_MODE) {
3904 /* Check to see if more RSCNs came in while we
3905 * were processing this one.
3906 */
3907 if ((vport->fc_rscn_id_cnt == 0) &&
3908 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
3909 spin_lock_irq(shost->host_lock);
3910 vport->fc_flag &= ~FC_RSCN_MODE;
3911 spin_unlock_irq(shost->host_lock);
3912 lpfc_can_disctmo(vport);
3913 } else
3914 lpfc_els_handle_rscn(vport);
3915 }
3916 }
3917 return;
3918 }
3919
3920 /*
3921 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS
3922 * ring the match the sppecified nodelist.
3923 */
3924 static void
3925 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
3926 {
3927 LIST_HEAD(completions);
3928 struct lpfc_sli *psli;
3929 IOCB_t *icmd;
3930 struct lpfc_iocbq *iocb, *next_iocb;
3931 struct lpfc_sli_ring *pring;
3932
3933 psli = &phba->sli;
3934 pring = &psli->ring[LPFC_ELS_RING];
3935
3936 /* Error matching iocb on txq or txcmplq
3937 * First check the txq.
3938 */
3939 spin_lock_irq(&phba->hbalock);
3940 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
3941 if (iocb->context1 != ndlp) {
3942 continue;
3943 }
3944 icmd = &iocb->iocb;
3945 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
3946 (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
3947
3948 list_move_tail(&iocb->list, &completions);
3949 pring->txq_cnt--;
3950 }
3951 }
3952
3953 /* Next check the txcmplq */
3954 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
3955 if (iocb->context1 != ndlp) {
3956 continue;
3957 }
3958 icmd = &iocb->iocb;
3959 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
3960 icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
3961 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
3962 }
3963 }
3964 spin_unlock_irq(&phba->hbalock);
3965
3966 /* Cancel all the IOCBs from the completions list */
3967 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
3968 IOERR_SLI_ABORTED);
3969 }
3970
3971 static void
3972 lpfc_disc_flush_list(struct lpfc_vport *vport)
3973 {
3974 struct lpfc_nodelist *ndlp, *next_ndlp;
3975 struct lpfc_hba *phba = vport->phba;
3976
3977 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
3978 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
3979 nlp_listp) {
3980 if (!NLP_CHK_NODE_ACT(ndlp))
3981 continue;
3982 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
3983 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
3984 lpfc_free_tx(phba, ndlp);
3985 }
3986 }
3987 }
3988 }
3989
3990 void
3991 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
3992 {
3993 lpfc_els_flush_rscn(vport);
3994 lpfc_els_flush_cmd(vport);
3995 lpfc_disc_flush_list(vport);
3996 }
3997
3998 /*****************************************************************************/
3999 /*
4000 * NAME: lpfc_disc_timeout
4001 *
4002 * FUNCTION: Fibre Channel driver discovery timeout routine.
4003 *
4004 * EXECUTION ENVIRONMENT: interrupt only
4005 *
4006 * CALLED FROM:
4007 * Timer function
4008 *
4009 * RETURNS:
4010 * none
4011 */
4012 /*****************************************************************************/
4013 void
4014 lpfc_disc_timeout(unsigned long ptr)
4015 {
4016 struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
4017 struct lpfc_hba *phba = vport->phba;
4018 uint32_t tmo_posted;
4019 unsigned long flags = 0;
4020
4021 if (unlikely(!phba))
4022 return;
4023
4024 spin_lock_irqsave(&vport->work_port_lock, flags);
4025 tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
4026 if (!tmo_posted)
4027 vport->work_port_events |= WORKER_DISC_TMO;
4028 spin_unlock_irqrestore(&vport->work_port_lock, flags);
4029
4030 if (!tmo_posted)
4031 lpfc_worker_wake_up(phba);
4032 return;
4033 }
4034
4035 static void
4036 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
4037 {
4038 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4039 struct lpfc_hba *phba = vport->phba;
4040 struct lpfc_sli *psli = &phba->sli;
4041 struct lpfc_nodelist *ndlp, *next_ndlp;
4042 LPFC_MBOXQ_t *initlinkmbox;
4043 int rc, clrlaerr = 0;
4044
4045 if (!(vport->fc_flag & FC_DISC_TMO))
4046 return;
4047
4048 spin_lock_irq(shost->host_lock);
4049 vport->fc_flag &= ~FC_DISC_TMO;
4050 spin_unlock_irq(shost->host_lock);
4051
4052 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4053 "disc timeout: state:x%x rtry:x%x flg:x%x",
4054 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
4055
4056 switch (vport->port_state) {
4057
4058 case LPFC_LOCAL_CFG_LINK:
4059 /* port_state is identically LPFC_LOCAL_CFG_LINK while waiting for
4060 * FAN
4061 */
4062 /* FAN timeout */
4063 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
4064 "0221 FAN timeout\n");
4065 /* Start discovery by sending FLOGI, clean up old rpis */
4066 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
4067 nlp_listp) {
4068 if (!NLP_CHK_NODE_ACT(ndlp))
4069 continue;
4070 if (ndlp->nlp_state != NLP_STE_NPR_NODE)
4071 continue;
4072 if (ndlp->nlp_type & NLP_FABRIC) {
4073 /* Clean up the ndlp on Fabric connections */
4074 lpfc_drop_node(vport, ndlp);
4075
4076 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
4077 /* Fail outstanding IO now since device
4078 * is marked for PLOGI.
4079 */
4080 lpfc_unreg_rpi(vport, ndlp);
4081 }
4082 }
4083 if (vport->port_state != LPFC_FLOGI) {
4084 lpfc_initial_flogi(vport);
4085 return;
4086 }
4087 break;
4088
4089 case LPFC_FDISC:
4090 case LPFC_FLOGI:
4091 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
4092 /* Initial FLOGI timeout */
4093 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4094 "0222 Initial %s timeout\n",
4095 vport->vpi ? "FDISC" : "FLOGI");
4096
4097 /* Assume no Fabric and go on with discovery.
4098 * Check for outstanding ELS FLOGI to abort.
4099 */
4100
4101 /* FLOGI failed, so just use loop map to make discovery list */
4102 lpfc_disc_list_loopmap(vport);
4103
4104 /* Start discovery */
4105 lpfc_disc_start(vport);
4106 break;
4107
4108 case LPFC_FABRIC_CFG_LINK:
4109 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
4110 NameServer login */
4111 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4112 "0223 Timeout while waiting for "
4113 "NameServer login\n");
4114 /* Next look for NameServer ndlp */
4115 ndlp = lpfc_findnode_did(vport, NameServer_DID);
4116 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
4117 lpfc_els_abort(phba, ndlp);
4118
4119 /* ReStart discovery */
4120 goto restart_disc;
4121
4122 case LPFC_NS_QRY:
4123 /* Check for wait for NameServer Rsp timeout */
4124 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4125 "0224 NameServer Query timeout "
4126 "Data: x%x x%x\n",
4127 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
4128
4129 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
4130 /* Try it one more time */
4131 vport->fc_ns_retry++;
4132 rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
4133 vport->fc_ns_retry, 0);
4134 if (rc == 0)
4135 break;
4136 }
4137 vport->fc_ns_retry = 0;
4138
4139 restart_disc:
4140 /*
4141 * Discovery is over.
4142 * set port_state to PORT_READY if SLI2.
4143 * cmpl_reg_vpi will set port_state to READY for SLI3.
4144 */
4145 if (phba->sli_rev < LPFC_SLI_REV4) {
4146 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
4147 lpfc_issue_reg_vpi(phba, vport);
4148 else { /* NPIV Not enabled */
4149 lpfc_issue_clear_la(phba, vport);
4150 vport->port_state = LPFC_VPORT_READY;
4151 }
4152 }
4153
4154 /* Setup and issue mailbox INITIALIZE LINK command */
4155 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4156 if (!initlinkmbox) {
4157 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4158 "0206 Device Discovery "
4159 "completion error\n");
4160 phba->link_state = LPFC_HBA_ERROR;
4161 break;
4162 }
4163
4164 lpfc_linkdown(phba);
4165 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
4166 phba->cfg_link_speed);
4167 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
4168 initlinkmbox->vport = vport;
4169 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4170 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
4171 lpfc_set_loopback_flag(phba);
4172 if (rc == MBX_NOT_FINISHED)
4173 mempool_free(initlinkmbox, phba->mbox_mem_pool);
4174
4175 break;
4176
4177 case LPFC_DISC_AUTH:
4178 /* Node Authentication timeout */
4179 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4180 "0227 Node Authentication timeout\n");
4181 lpfc_disc_flush_list(vport);
4182
4183 /*
4184 * set port_state to PORT_READY if SLI2.
4185 * cmpl_reg_vpi will set port_state to READY for SLI3.
4186 */
4187 if (phba->sli_rev < LPFC_SLI_REV4) {
4188 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
4189 lpfc_issue_reg_vpi(phba, vport);
4190 else { /* NPIV Not enabled */
4191 lpfc_issue_clear_la(phba, vport);
4192 vport->port_state = LPFC_VPORT_READY;
4193 }
4194 }
4195 break;
4196
4197 case LPFC_VPORT_READY:
4198 if (vport->fc_flag & FC_RSCN_MODE) {
4199 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4200 "0231 RSCN timeout Data: x%x "
4201 "x%x\n",
4202 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
4203
4204 /* Cleanup any outstanding ELS commands */
4205 lpfc_els_flush_cmd(vport);
4206
4207 lpfc_els_flush_rscn(vport);
4208 lpfc_disc_flush_list(vport);
4209 }
4210 break;
4211
4212 default:
4213 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4214 "0273 Unexpected discovery timeout, "
4215 "vport State x%x\n", vport->port_state);
4216 break;
4217 }
4218
4219 switch (phba->link_state) {
4220 case LPFC_CLEAR_LA:
4221 /* CLEAR LA timeout */
4222 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4223 "0228 CLEAR LA timeout\n");
4224 clrlaerr = 1;
4225 break;
4226
4227 case LPFC_LINK_UP:
4228 lpfc_issue_clear_la(phba, vport);
4229 /* Drop thru */
4230 case LPFC_LINK_UNKNOWN:
4231 case LPFC_WARM_START:
4232 case LPFC_INIT_START:
4233 case LPFC_INIT_MBX_CMDS:
4234 case LPFC_LINK_DOWN:
4235 case LPFC_HBA_ERROR:
4236 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4237 "0230 Unexpected timeout, hba link "
4238 "state x%x\n", phba->link_state);
4239 clrlaerr = 1;
4240 break;
4241
4242 case LPFC_HBA_READY:
4243 break;
4244 }
4245
4246 if (clrlaerr) {
4247 lpfc_disc_flush_list(vport);
4248 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
4249 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
4250 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
4251 vport->port_state = LPFC_VPORT_READY;
4252 }
4253
4254 return;
4255 }
4256
4257 /*
4258 * This routine handles processing a NameServer REG_LOGIN mailbox
4259 * command upon completion. It is setup in the LPFC_MBOXQ
4260 * as the completion routine when the command is
4261 * handed off to the SLI layer.
4262 */
4263 void
4264 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4265 {
4266 MAILBOX_t *mb = &pmb->u.mb;
4267 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
4268 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
4269 struct lpfc_vport *vport = pmb->vport;
4270
4271 pmb->context1 = NULL;
4272
4273 ndlp->nlp_rpi = mb->un.varWords[0];
4274 ndlp->nlp_flag |= NLP_RPI_VALID;
4275 ndlp->nlp_type |= NLP_FABRIC;
4276 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4277
4278 /*
4279 * Start issuing Fabric-Device Management Interface (FDMI) command to
4280 * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
4281 * fdmi-on=2 (supporting RPA/hostnmae)
4282 */
4283
4284 if (vport->cfg_fdmi_on == 1)
4285 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
4286 else
4287 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
4288
4289 /* decrement the node reference count held for this callback
4290 * function.
4291 */
4292 lpfc_nlp_put(ndlp);
4293 lpfc_mbuf_free(phba, mp->virt, mp->phys);
4294 kfree(mp);
4295 mempool_free(pmb, phba->mbox_mem_pool);
4296
4297 return;
4298 }
4299
4300 static int
4301 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
4302 {
4303 uint16_t *rpi = param;
4304
4305 return ndlp->nlp_rpi == *rpi;
4306 }
4307
4308 static int
4309 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
4310 {
4311 return memcmp(&ndlp->nlp_portname, param,
4312 sizeof(ndlp->nlp_portname)) == 0;
4313 }
4314
4315 static struct lpfc_nodelist *
4316 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
4317 {
4318 struct lpfc_nodelist *ndlp;
4319
4320 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
4321 if (filter(ndlp, param))
4322 return ndlp;
4323 }
4324 return NULL;
4325 }
4326
4327 /*
4328 * This routine looks up the ndlp lists for the given RPI. If rpi found it
4329 * returns the node list element pointer else return NULL.
4330 */
4331 struct lpfc_nodelist *
4332 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
4333 {
4334 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
4335 }
4336
4337 /*
4338 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
4339 * returns the node element list pointer else return NULL.
4340 */
4341 struct lpfc_nodelist *
4342 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
4343 {
4344 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4345 struct lpfc_nodelist *ndlp;
4346
4347 spin_lock_irq(shost->host_lock);
4348 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
4349 spin_unlock_irq(shost->host_lock);
4350 return ndlp;
4351 }
4352
4353 void
4354 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4355 uint32_t did)
4356 {
4357 memset(ndlp, 0, sizeof (struct lpfc_nodelist));
4358
4359 lpfc_initialize_node(vport, ndlp, did);
4360 INIT_LIST_HEAD(&ndlp->nlp_listp);
4361
4362 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4363 "node init: did:x%x",
4364 ndlp->nlp_DID, 0, 0);
4365
4366 return;
4367 }
4368
4369 /* This routine releases all resources associated with a specifc NPort's ndlp
4370 * and mempool_free's the nodelist.
4371 */
4372 static void
4373 lpfc_nlp_release(struct kref *kref)
4374 {
4375 struct lpfc_hba *phba;
4376 unsigned long flags;
4377 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
4378 kref);
4379
4380 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4381 "node release: did:x%x flg:x%x type:x%x",
4382 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4383
4384 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
4385 "0279 lpfc_nlp_release: ndlp:x%p "
4386 "usgmap:x%x refcnt:%d\n",
4387 (void *)ndlp, ndlp->nlp_usg_map,
4388 atomic_read(&ndlp->kref.refcount));
4389
4390 /* remove ndlp from action. */
4391 lpfc_nlp_remove(ndlp->vport, ndlp);
4392
4393 /* clear the ndlp active flag for all release cases */
4394 phba = ndlp->phba;
4395 spin_lock_irqsave(&phba->ndlp_lock, flags);
4396 NLP_CLR_NODE_ACT(ndlp);
4397 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4398
4399 /* free ndlp memory for final ndlp release */
4400 if (NLP_CHK_FREE_REQ(ndlp)) {
4401 kfree(ndlp->lat_data);
4402 mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
4403 }
4404 }
4405
4406 /* This routine bumps the reference count for a ndlp structure to ensure
4407 * that one discovery thread won't free a ndlp while another discovery thread
4408 * is using it.
4409 */
4410 struct lpfc_nodelist *
4411 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
4412 {
4413 struct lpfc_hba *phba;
4414 unsigned long flags;
4415
4416 if (ndlp) {
4417 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4418 "node get: did:x%x flg:x%x refcnt:x%x",
4419 ndlp->nlp_DID, ndlp->nlp_flag,
4420 atomic_read(&ndlp->kref.refcount));
4421 /* The check of ndlp usage to prevent incrementing the
4422 * ndlp reference count that is in the process of being
4423 * released.
4424 */
4425 phba = ndlp->phba;
4426 spin_lock_irqsave(&phba->ndlp_lock, flags);
4427 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
4428 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4429 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
4430 "0276 lpfc_nlp_get: ndlp:x%p "
4431 "usgmap:x%x refcnt:%d\n",
4432 (void *)ndlp, ndlp->nlp_usg_map,
4433 atomic_read(&ndlp->kref.refcount));
4434 return NULL;
4435 } else
4436 kref_get(&ndlp->kref);
4437 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4438 }
4439 return ndlp;
4440 }
4441
4442 /* This routine decrements the reference count for a ndlp structure. If the
4443 * count goes to 0, this indicates the the associated nodelist should be
4444 * freed. Returning 1 indicates the ndlp resource has been released; on the
4445 * other hand, returning 0 indicates the ndlp resource has not been released
4446 * yet.
4447 */
4448 int
4449 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
4450 {
4451 struct lpfc_hba *phba;
4452 unsigned long flags;
4453
4454 if (!ndlp)
4455 return 1;
4456
4457 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4458 "node put: did:x%x flg:x%x refcnt:x%x",
4459 ndlp->nlp_DID, ndlp->nlp_flag,
4460 atomic_read(&ndlp->kref.refcount));
4461 phba = ndlp->phba;
4462 spin_lock_irqsave(&phba->ndlp_lock, flags);
4463 /* Check the ndlp memory free acknowledge flag to avoid the
4464 * possible race condition that kref_put got invoked again
4465 * after previous one has done ndlp memory free.
4466 */
4467 if (NLP_CHK_FREE_ACK(ndlp)) {
4468 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4469 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
4470 "0274 lpfc_nlp_put: ndlp:x%p "
4471 "usgmap:x%x refcnt:%d\n",
4472 (void *)ndlp, ndlp->nlp_usg_map,
4473 atomic_read(&ndlp->kref.refcount));
4474 return 1;
4475 }
4476 /* Check the ndlp inactivate log flag to avoid the possible
4477 * race condition that kref_put got invoked again after ndlp
4478 * is already in inactivating state.
4479 */
4480 if (NLP_CHK_IACT_REQ(ndlp)) {
4481 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4482 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
4483 "0275 lpfc_nlp_put: ndlp:x%p "
4484 "usgmap:x%x refcnt:%d\n",
4485 (void *)ndlp, ndlp->nlp_usg_map,
4486 atomic_read(&ndlp->kref.refcount));
4487 return 1;
4488 }
4489 /* For last put, mark the ndlp usage flags to make sure no
4490 * other kref_get and kref_put on the same ndlp shall get
4491 * in between the process when the final kref_put has been
4492 * invoked on this ndlp.
4493 */
4494 if (atomic_read(&ndlp->kref.refcount) == 1) {
4495 /* Indicate ndlp is put to inactive state. */
4496 NLP_SET_IACT_REQ(ndlp);
4497 /* Acknowledge ndlp memory free has been seen. */
4498 if (NLP_CHK_FREE_REQ(ndlp))
4499 NLP_SET_FREE_ACK(ndlp);
4500 }
4501 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4502 /* Note, the kref_put returns 1 when decrementing a reference
4503 * count that was 1, it invokes the release callback function,
4504 * but it still left the reference count as 1 (not actually
4505 * performs the last decrementation). Otherwise, it actually
4506 * decrements the reference count and returns 0.
4507 */
4508 return kref_put(&ndlp->kref, lpfc_nlp_release);
4509 }
4510
4511 /* This routine free's the specified nodelist if it is not in use
4512 * by any other discovery thread. This routine returns 1 if the
4513 * ndlp has been freed. A return value of 0 indicates the ndlp is
4514 * not yet been released.
4515 */
4516 int
4517 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
4518 {
4519 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4520 "node not used: did:x%x flg:x%x refcnt:x%x",
4521 ndlp->nlp_DID, ndlp->nlp_flag,
4522 atomic_read(&ndlp->kref.refcount));
4523 if (atomic_read(&ndlp->kref.refcount) == 1)
4524 if (lpfc_nlp_put(ndlp))
4525 return 1;
4526 return 0;
4527 }
4528
4529 /**
4530 * lpfc_fcf_inuse - Check if FCF can be unregistered.
4531 * @phba: Pointer to hba context object.
4532 *
4533 * This function iterate through all FC nodes associated
4534 * will all vports to check if there is any node with
4535 * fc_rports associated with it. If there is an fc_rport
4536 * associated with the node, then the node is either in
4537 * discovered state or its devloss_timer is pending.
4538 */
4539 static int
4540 lpfc_fcf_inuse(struct lpfc_hba *phba)
4541 {
4542 struct lpfc_vport **vports;
4543 int i, ret = 0;
4544 struct lpfc_nodelist *ndlp;
4545 struct Scsi_Host *shost;
4546
4547 vports = lpfc_create_vport_work_array(phba);
4548
4549 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4550 shost = lpfc_shost_from_vport(vports[i]);
4551 spin_lock_irq(shost->host_lock);
4552 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
4553 if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport &&
4554 (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
4555 ret = 1;
4556 spin_unlock_irq(shost->host_lock);
4557 goto out;
4558 } else {
4559 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
4560 "2624 RPI %x DID %x flg %x still "
4561 "logged in\n",
4562 ndlp->nlp_rpi, ndlp->nlp_DID,
4563 ndlp->nlp_flag);
4564 if (ndlp->nlp_flag & NLP_RPI_VALID)
4565 ret = 1;
4566 }
4567 }
4568 spin_unlock_irq(shost->host_lock);
4569 }
4570 out:
4571 lpfc_destroy_vport_work_array(phba, vports);
4572 return ret;
4573 }
4574
4575 /**
4576 * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
4577 * @phba: Pointer to hba context object.
4578 * @mboxq: Pointer to mailbox object.
4579 *
4580 * This function frees memory associated with the mailbox command.
4581 */
4582 static void
4583 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
4584 {
4585 struct lpfc_vport *vport = mboxq->vport;
4586
4587 if (mboxq->u.mb.mbxStatus) {
4588 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4589 "2555 UNREG_VFI mbxStatus error x%x "
4590 "HBA state x%x\n",
4591 mboxq->u.mb.mbxStatus, vport->port_state);
4592 }
4593 mempool_free(mboxq, phba->mbox_mem_pool);
4594 return;
4595 }
4596
4597 /**
4598 * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
4599 * @phba: Pointer to hba context object.
4600 * @mboxq: Pointer to mailbox object.
4601 *
4602 * This function frees memory associated with the mailbox command.
4603 */
4604 static void
4605 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
4606 {
4607 struct lpfc_vport *vport = mboxq->vport;
4608
4609 if (mboxq->u.mb.mbxStatus) {
4610 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4611 "2550 UNREG_FCFI mbxStatus error x%x "
4612 "HBA state x%x\n",
4613 mboxq->u.mb.mbxStatus, vport->port_state);
4614 }
4615 mempool_free(mboxq, phba->mbox_mem_pool);
4616 return;
4617 }
4618
4619 /**
4620 * lpfc_unregister_fcf_prep - Unregister fcf record preparation
4621 * @phba: Pointer to hba context object.
4622 *
4623 * This function prepare the HBA for unregistering the currently registered
4624 * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and
4625 * VFIs.
4626 */
4627 int
4628 lpfc_unregister_fcf_prep(struct lpfc_hba *phba)
4629 {
4630 LPFC_MBOXQ_t *mbox;
4631 struct lpfc_vport **vports;
4632 struct lpfc_nodelist *ndlp;
4633 struct Scsi_Host *shost;
4634 int i, rc;
4635
4636 /* Unregister RPIs */
4637 if (lpfc_fcf_inuse(phba))
4638 lpfc_unreg_hba_rpis(phba);
4639
4640 /* At this point, all discovery is aborted */
4641 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
4642
4643 /* Unregister VPIs */
4644 vports = lpfc_create_vport_work_array(phba);
4645 if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
4646 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4647 /* Stop FLOGI/FDISC retries */
4648 ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
4649 if (ndlp)
4650 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
4651 lpfc_mbx_unreg_vpi(vports[i]);
4652 shost = lpfc_shost_from_vport(vports[i]);
4653 spin_lock_irq(shost->host_lock);
4654 vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
4655 vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
4656 spin_unlock_irq(shost->host_lock);
4657 }
4658 lpfc_destroy_vport_work_array(phba, vports);
4659
4660 /* Cleanup any outstanding ELS commands */
4661 lpfc_els_flush_all_cmd(phba);
4662
4663 /* Unregister VFI */
4664 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4665 if (!mbox) {
4666 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4667 "2556 UNREG_VFI mbox allocation failed"
4668 "HBA state x%x\n", phba->pport->port_state);
4669 return -ENOMEM;
4670 }
4671
4672 lpfc_unreg_vfi(mbox, phba->pport);
4673 mbox->vport = phba->pport;
4674 mbox->mbox_cmpl = lpfc_unregister_vfi_cmpl;
4675
4676 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4677 if (rc == MBX_NOT_FINISHED) {
4678 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4679 "2557 UNREG_VFI issue mbox failed rc x%x "
4680 "HBA state x%x\n",
4681 rc, phba->pport->port_state);
4682 mempool_free(mbox, phba->mbox_mem_pool);
4683 return -EIO;
4684 }
4685
4686 shost = lpfc_shost_from_vport(phba->pport);
4687 spin_lock_irq(shost->host_lock);
4688 phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
4689 spin_unlock_irq(shost->host_lock);
4690
4691 return 0;
4692 }
4693
4694 /**
4695 * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record
4696 * @phba: Pointer to hba context object.
4697 *
4698 * This function issues synchronous unregister FCF mailbox command to HBA to
4699 * unregister the currently registered FCF record. The driver does not reset
4700 * the driver FCF usage state flags.
4701 *
4702 * Return 0 if successfully issued, none-zero otherwise.
4703 */
4704 int
4705 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba)
4706 {
4707 LPFC_MBOXQ_t *mbox;
4708 int rc;
4709
4710 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4711 if (!mbox) {
4712 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4713 "2551 UNREG_FCFI mbox allocation failed"
4714 "HBA state x%x\n", phba->pport->port_state);
4715 return -ENOMEM;
4716 }
4717 lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
4718 mbox->vport = phba->pport;
4719 mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
4720 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4721
4722 if (rc == MBX_NOT_FINISHED) {
4723 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4724 "2552 Unregister FCFI command failed rc x%x "
4725 "HBA state x%x\n",
4726 rc, phba->pport->port_state);
4727 return -EINVAL;
4728 }
4729 return 0;
4730 }
4731
4732 /**
4733 * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan
4734 * @phba: Pointer to hba context object.
4735 *
4736 * This function unregisters the currently reigstered FCF. This function
4737 * also tries to find another FCF for discovery by rescan the HBA FCF table.
4738 */
4739 void
4740 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba)
4741 {
4742 int rc;
4743
4744 /* Preparation for unregistering fcf */
4745 rc = lpfc_unregister_fcf_prep(phba);
4746 if (rc) {
4747 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
4748 "2748 Failed to prepare for unregistering "
4749 "HBA's FCF record: rc=%d\n", rc);
4750 return;
4751 }
4752
4753 /* Now, unregister FCF record and reset HBA FCF state */
4754 rc = lpfc_sli4_unregister_fcf(phba);
4755 if (rc)
4756 return;
4757 /* Reset HBA FCF states after successful unregister FCF */
4758 phba->fcf.fcf_flag = 0;
4759
4760 /*
4761 * If driver is not unloading, check if there is any other
4762 * FCF record that can be used for discovery.
4763 */
4764 if ((phba->pport->load_flag & FC_UNLOADING) ||
4765 (phba->link_state < LPFC_LINK_UP))
4766 return;
4767
4768 rc = lpfc_sli4_read_fcf_record(phba, LPFC_FCOE_FCF_GET_FIRST);
4769
4770 if (rc)
4771 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4772 "2553 lpfc_unregister_unused_fcf failed "
4773 "to read FCF record HBA state x%x\n",
4774 phba->pport->port_state);
4775 }
4776
4777 /**
4778 * lpfc_unregister_fcf - Unregister the currently registered fcf record
4779 * @phba: Pointer to hba context object.
4780 *
4781 * This function just unregisters the currently reigstered FCF. It does not
4782 * try to find another FCF for discovery.
4783 */
4784 void
4785 lpfc_unregister_fcf(struct lpfc_hba *phba)
4786 {
4787 int rc;
4788
4789 /* Preparation for unregistering fcf */
4790 rc = lpfc_unregister_fcf_prep(phba);
4791 if (rc) {
4792 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
4793 "2749 Failed to prepare for unregistering "
4794 "HBA's FCF record: rc=%d\n", rc);
4795 return;
4796 }
4797
4798 /* Now, unregister FCF record and reset HBA FCF state */
4799 rc = lpfc_sli4_unregister_fcf(phba);
4800 if (rc)
4801 return;
4802 /* Set proper HBA FCF states after successful unregister FCF */
4803 spin_lock_irq(&phba->hbalock);
4804 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
4805 spin_unlock_irq(&phba->hbalock);
4806 }
4807
4808 /**
4809 * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
4810 * @phba: Pointer to hba context object.
4811 *
4812 * This function check if there are any connected remote port for the FCF and
4813 * if all the devices are disconnected, this function unregister FCFI.
4814 * This function also tries to use another FCF for discovery.
4815 */
4816 void
4817 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
4818 {
4819 /*
4820 * If HBA is not running in FIP mode or if HBA does not support
4821 * FCoE or if FCF is not registered, do nothing.
4822 */
4823 spin_lock_irq(&phba->hbalock);
4824 if (!(phba->hba_flag & HBA_FCOE_SUPPORT) ||
4825 !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
4826 !(phba->hba_flag & HBA_FIP_SUPPORT)) {
4827 spin_unlock_irq(&phba->hbalock);
4828 return;
4829 }
4830 spin_unlock_irq(&phba->hbalock);
4831
4832 if (lpfc_fcf_inuse(phba))
4833 return;
4834
4835 lpfc_unregister_fcf_rescan(phba);
4836 }
4837
4838 /**
4839 * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
4840 * @phba: Pointer to hba context object.
4841 * @buff: Buffer containing the FCF connection table as in the config
4842 * region.
4843 * This function create driver data structure for the FCF connection
4844 * record table read from config region 23.
4845 */
4846 static void
4847 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
4848 uint8_t *buff)
4849 {
4850 struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
4851 struct lpfc_fcf_conn_hdr *conn_hdr;
4852 struct lpfc_fcf_conn_rec *conn_rec;
4853 uint32_t record_count;
4854 int i;
4855
4856 /* Free the current connect table */
4857 list_for_each_entry_safe(conn_entry, next_conn_entry,
4858 &phba->fcf_conn_rec_list, list) {
4859 list_del_init(&conn_entry->list);
4860 kfree(conn_entry);
4861 }
4862
4863 conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
4864 record_count = conn_hdr->length * sizeof(uint32_t)/
4865 sizeof(struct lpfc_fcf_conn_rec);
4866
4867 conn_rec = (struct lpfc_fcf_conn_rec *)
4868 (buff + sizeof(struct lpfc_fcf_conn_hdr));
4869
4870 for (i = 0; i < record_count; i++) {
4871 if (!(conn_rec[i].flags & FCFCNCT_VALID))
4872 continue;
4873 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
4874 GFP_KERNEL);
4875 if (!conn_entry) {
4876 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4877 "2566 Failed to allocate connection"
4878 " table entry\n");
4879 return;
4880 }
4881
4882 memcpy(&conn_entry->conn_rec, &conn_rec[i],
4883 sizeof(struct lpfc_fcf_conn_rec));
4884 conn_entry->conn_rec.vlan_tag =
4885 le16_to_cpu(conn_entry->conn_rec.vlan_tag) & 0xFFF;
4886 conn_entry->conn_rec.flags =
4887 le16_to_cpu(conn_entry->conn_rec.flags);
4888 list_add_tail(&conn_entry->list,
4889 &phba->fcf_conn_rec_list);
4890 }
4891 }
4892
4893 /**
4894 * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
4895 * @phba: Pointer to hba context object.
4896 * @buff: Buffer containing the FCoE parameter data structure.
4897 *
4898 * This function update driver data structure with config
4899 * parameters read from config region 23.
4900 */
4901 static void
4902 lpfc_read_fcoe_param(struct lpfc_hba *phba,
4903 uint8_t *buff)
4904 {
4905 struct lpfc_fip_param_hdr *fcoe_param_hdr;
4906 struct lpfc_fcoe_params *fcoe_param;
4907
4908 fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
4909 buff;
4910 fcoe_param = (struct lpfc_fcoe_params *)
4911 (buff + sizeof(struct lpfc_fip_param_hdr));
4912
4913 if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
4914 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
4915 return;
4916
4917 if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
4918 phba->valid_vlan = 1;
4919 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
4920 0xFFF;
4921 }
4922
4923 phba->fc_map[0] = fcoe_param->fc_map[0];
4924 phba->fc_map[1] = fcoe_param->fc_map[1];
4925 phba->fc_map[2] = fcoe_param->fc_map[2];
4926 return;
4927 }
4928
4929 /**
4930 * lpfc_get_rec_conf23 - Get a record type in config region data.
4931 * @buff: Buffer containing config region 23 data.
4932 * @size: Size of the data buffer.
4933 * @rec_type: Record type to be searched.
4934 *
4935 * This function searches config region data to find the begining
4936 * of the record specified by record_type. If record found, this
4937 * function return pointer to the record else return NULL.
4938 */
4939 static uint8_t *
4940 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
4941 {
4942 uint32_t offset = 0, rec_length;
4943
4944 if ((buff[0] == LPFC_REGION23_LAST_REC) ||
4945 (size < sizeof(uint32_t)))
4946 return NULL;
4947
4948 rec_length = buff[offset + 1];
4949
4950 /*
4951 * One TLV record has one word header and number of data words
4952 * specified in the rec_length field of the record header.
4953 */
4954 while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
4955 <= size) {
4956 if (buff[offset] == rec_type)
4957 return &buff[offset];
4958
4959 if (buff[offset] == LPFC_REGION23_LAST_REC)
4960 return NULL;
4961
4962 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
4963 rec_length = buff[offset + 1];
4964 }
4965 return NULL;
4966 }
4967
4968 /**
4969 * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
4970 * @phba: Pointer to lpfc_hba data structure.
4971 * @buff: Buffer containing config region 23 data.
4972 * @size: Size of the data buffer.
4973 *
4974 * This fuction parse the FCoE config parameters in config region 23 and
4975 * populate driver data structure with the parameters.
4976 */
4977 void
4978 lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
4979 uint8_t *buff,
4980 uint32_t size)
4981 {
4982 uint32_t offset = 0, rec_length;
4983 uint8_t *rec_ptr;
4984
4985 /*
4986 * If data size is less than 2 words signature and version cannot be
4987 * verified.
4988 */
4989 if (size < 2*sizeof(uint32_t))
4990 return;
4991
4992 /* Check the region signature first */
4993 if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
4994 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4995 "2567 Config region 23 has bad signature\n");
4996 return;
4997 }
4998
4999 offset += 4;
5000
5001 /* Check the data structure version */
5002 if (buff[offset] != LPFC_REGION23_VERSION) {
5003 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5004 "2568 Config region 23 has bad version\n");
5005 return;
5006 }
5007 offset += 4;
5008
5009 rec_length = buff[offset + 1];
5010
5011 /* Read FCoE param record */
5012 rec_ptr = lpfc_get_rec_conf23(&buff[offset],
5013 size - offset, FCOE_PARAM_TYPE);
5014 if (rec_ptr)
5015 lpfc_read_fcoe_param(phba, rec_ptr);
5016
5017 /* Read FCF connection table */
5018 rec_ptr = lpfc_get_rec_conf23(&buff[offset],
5019 size - offset, FCOE_CONN_TBL_TYPE);
5020 if (rec_ptr)
5021 lpfc_read_fcf_conn_tbl(phba, rec_ptr);
5022
5023 }
kernel source for telekom puls (alcatel/mediatek)