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ath5k: fix values for bus error bits in ISR2
[linux-2.6/next.git] / drivers / scsi / lpfc / lpfc_hbadisc.c
blobed46b24a338002e362aba57de1da37c8b54fbfa6
1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2009 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
6 * www.emulex.com *
7 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
8 * *
9 * This program is free software; you can redistribute it and/or *
10 * modify it under the terms of version 2 of the GNU General *
11 * Public License as published by the Free Software Foundation. *
12 * This program is distributed in the hope that it will be useful. *
13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
17 * TO BE LEGALLY INVALID. See the GNU General Public License for *
18 * more details, a copy of which can be found in the file COPYING *
19 * included with this package. *
20 *******************************************************************/
21
22 #include <linux/blkdev.h>
23 #include <linux/pci.h>
24 #include <linux/kthread.h>
25 #include <linux/interrupt.h>
26
27 #include <scsi/scsi.h>
28 #include <scsi/scsi_device.h>
29 #include <scsi/scsi_host.h>
30 #include <scsi/scsi_transport_fc.h>
31
32 #include "lpfc_hw4.h"
33 #include "lpfc_hw.h"
34 #include "lpfc_nl.h"
35 #include "lpfc_disc.h"
36 #include "lpfc_sli.h"
37 #include "lpfc_sli4.h"
38 #include "lpfc_scsi.h"
39 #include "lpfc.h"
40 #include "lpfc_logmsg.h"
41 #include "lpfc_crtn.h"
42 #include "lpfc_vport.h"
43 #include "lpfc_debugfs.h"
44
45 /* AlpaArray for assignment of scsid for scan-down and bind_method */
46 static uint8_t lpfcAlpaArray[] = {
47 0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
48 0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
49 0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
50 0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
51 0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
52 0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
53 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
54 0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
55 0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
56 0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
57 0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
58 0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
59 0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
60 };
61
62 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
63 static void lpfc_disc_flush_list(struct lpfc_vport *vport);
64
65 void
66 lpfc_terminate_rport_io(struct fc_rport *rport)
67 {
68 struct lpfc_rport_data *rdata;
69 struct lpfc_nodelist * ndlp;
70 struct lpfc_hba *phba;
71
72 rdata = rport->dd_data;
73 ndlp = rdata->pnode;
74
75 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
76 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
77 printk(KERN_ERR "Cannot find remote node"
78 " to terminate I/O Data x%x\n",
79 rport->port_id);
80 return;
81 }
82
83 phba = ndlp->phba;
84
85 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
86 "rport terminate: sid:x%x did:x%x flg:x%x",
87 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
88
89 if (ndlp->nlp_sid != NLP_NO_SID) {
90 lpfc_sli_abort_iocb(ndlp->vport,
91 &phba->sli.ring[phba->sli.fcp_ring],
92 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
93 }
94 }
95
96 /*
97 * This function will be called when dev_loss_tmo fire.
98 */
99 void
100 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
101 {
102 struct lpfc_rport_data *rdata;
103 struct lpfc_nodelist * ndlp;
104 struct lpfc_vport *vport;
105 struct lpfc_hba *phba;
106 struct lpfc_work_evt *evtp;
107 int put_node;
108 int put_rport;
109
110 rdata = rport->dd_data;
111 ndlp = rdata->pnode;
112 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
113 return;
114
115 vport = ndlp->vport;
116 phba = vport->phba;
117
118 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
119 "rport devlosscb: sid:x%x did:x%x flg:x%x",
120 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
121
122 /* Don't defer this if we are in the process of deleting the vport
123 * or unloading the driver. The unload will cleanup the node
124 * appropriately we just need to cleanup the ndlp rport info here.
125 */
126 if (vport->load_flag & FC_UNLOADING) {
127 put_node = rdata->pnode != NULL;
128 put_rport = ndlp->rport != NULL;
129 rdata->pnode = NULL;
130 ndlp->rport = NULL;
131 if (put_node)
132 lpfc_nlp_put(ndlp);
133 if (put_rport)
134 put_device(&rport->dev);
135 return;
136 }
137
138 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
139 return;
140
141 evtp = &ndlp->dev_loss_evt;
142
143 if (!list_empty(&evtp->evt_listp))
144 return;
145
146 spin_lock_irq(&phba->hbalock);
147 /* We need to hold the node by incrementing the reference
148 * count until this queued work is done
149 */
150 evtp->evt_arg1 = lpfc_nlp_get(ndlp);
151 if (evtp->evt_arg1) {
152 evtp->evt = LPFC_EVT_DEV_LOSS;
153 list_add_tail(&evtp->evt_listp, &phba->work_list);
154 lpfc_worker_wake_up(phba);
155 }
156 spin_unlock_irq(&phba->hbalock);
157
158 return;
159 }
160
161 /*
162 * This function is called from the worker thread when dev_loss_tmo
163 * expire.
164 */
165 static void
166 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
167 {
168 struct lpfc_rport_data *rdata;
169 struct fc_rport *rport;
170 struct lpfc_vport *vport;
171 struct lpfc_hba *phba;
172 uint8_t *name;
173 int put_node;
174 int put_rport;
175 int warn_on = 0;
176
177 rport = ndlp->rport;
178
179 if (!rport)
180 return;
181
182 rdata = rport->dd_data;
183 name = (uint8_t *) &ndlp->nlp_portname;
184 vport = ndlp->vport;
185 phba = vport->phba;
186
187 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
188 "rport devlosstmo:did:x%x type:x%x id:x%x",
189 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
190
191 /* Don't defer this if we are in the process of deleting the vport
192 * or unloading the driver. The unload will cleanup the node
193 * appropriately we just need to cleanup the ndlp rport info here.
194 */
195 if (vport->load_flag & FC_UNLOADING) {
196 if (ndlp->nlp_sid != NLP_NO_SID) {
197 /* flush the target */
198 lpfc_sli_abort_iocb(vport,
199 &phba->sli.ring[phba->sli.fcp_ring],
200 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
201 }
202 put_node = rdata->pnode != NULL;
203 put_rport = ndlp->rport != NULL;
204 rdata->pnode = NULL;
205 ndlp->rport = NULL;
206 if (put_node)
207 lpfc_nlp_put(ndlp);
208 if (put_rport)
209 put_device(&rport->dev);
210 return;
211 }
212
213 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
214 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
215 "0284 Devloss timeout Ignored on "
216 "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
217 "NPort x%x\n",
218 *name, *(name+1), *(name+2), *(name+3),
219 *(name+4), *(name+5), *(name+6), *(name+7),
220 ndlp->nlp_DID);
221 return;
222 }
223
224 if (ndlp->nlp_type & NLP_FABRIC) {
225 /* We will clean up these Nodes in linkup */
226 put_node = rdata->pnode != NULL;
227 put_rport = ndlp->rport != NULL;
228 rdata->pnode = NULL;
229 ndlp->rport = NULL;
230 if (put_node)
231 lpfc_nlp_put(ndlp);
232 if (put_rport)
233 put_device(&rport->dev);
234 return;
235 }
236
237 if (ndlp->nlp_sid != NLP_NO_SID) {
238 warn_on = 1;
239 /* flush the target */
240 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
241 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
242 }
243
244 if (warn_on) {
245 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
246 "0203 Devloss timeout on "
247 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
248 "NPort x%06x Data: x%x x%x x%x\n",
249 *name, *(name+1), *(name+2), *(name+3),
250 *(name+4), *(name+5), *(name+6), *(name+7),
251 ndlp->nlp_DID, ndlp->nlp_flag,
252 ndlp->nlp_state, ndlp->nlp_rpi);
253 } else {
254 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
255 "0204 Devloss timeout on "
256 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
257 "NPort x%06x Data: x%x x%x x%x\n",
258 *name, *(name+1), *(name+2), *(name+3),
259 *(name+4), *(name+5), *(name+6), *(name+7),
260 ndlp->nlp_DID, ndlp->nlp_flag,
261 ndlp->nlp_state, ndlp->nlp_rpi);
262 }
263
264 put_node = rdata->pnode != NULL;
265 put_rport = ndlp->rport != NULL;
266 rdata->pnode = NULL;
267 ndlp->rport = NULL;
268 if (put_node)
269 lpfc_nlp_put(ndlp);
270 if (put_rport)
271 put_device(&rport->dev);
272
273 if (!(vport->load_flag & FC_UNLOADING) &&
274 !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
275 !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
276 (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE))
277 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
278
279 lpfc_unregister_unused_fcf(phba);
280 }
281
282 /**
283 * lpfc_alloc_fast_evt - Allocates data structure for posting event
284 * @phba: Pointer to hba context object.
285 *
286 * This function is called from the functions which need to post
287 * events from interrupt context. This function allocates data
288 * structure required for posting event. It also keeps track of
289 * number of events pending and prevent event storm when there are
290 * too many events.
291 **/
292 struct lpfc_fast_path_event *
293 lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
294 struct lpfc_fast_path_event *ret;
295
296 /* If there are lot of fast event do not exhaust memory due to this */
297 if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
298 return NULL;
299
300 ret = kzalloc(sizeof(struct lpfc_fast_path_event),
301 GFP_ATOMIC);
302 if (ret) {
303 atomic_inc(&phba->fast_event_count);
304 INIT_LIST_HEAD(&ret->work_evt.evt_listp);
305 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
306 }
307 return ret;
308 }
309
310 /**
311 * lpfc_free_fast_evt - Frees event data structure
312 * @phba: Pointer to hba context object.
313 * @evt: Event object which need to be freed.
314 *
315 * This function frees the data structure required for posting
316 * events.
317 **/
318 void
319 lpfc_free_fast_evt(struct lpfc_hba *phba,
320 struct lpfc_fast_path_event *evt) {
321
322 atomic_dec(&phba->fast_event_count);
323 kfree(evt);
324 }
325
326 /**
327 * lpfc_send_fastpath_evt - Posts events generated from fast path
328 * @phba: Pointer to hba context object.
329 * @evtp: Event data structure.
330 *
331 * This function is called from worker thread, when the interrupt
332 * context need to post an event. This function posts the event
333 * to fc transport netlink interface.
334 **/
335 static void
336 lpfc_send_fastpath_evt(struct lpfc_hba *phba,
337 struct lpfc_work_evt *evtp)
338 {
339 unsigned long evt_category, evt_sub_category;
340 struct lpfc_fast_path_event *fast_evt_data;
341 char *evt_data;
342 uint32_t evt_data_size;
343 struct Scsi_Host *shost;
344
345 fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
346 work_evt);
347
348 evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
349 evt_sub_category = (unsigned long) fast_evt_data->un.
350 fabric_evt.subcategory;
351 shost = lpfc_shost_from_vport(fast_evt_data->vport);
352 if (evt_category == FC_REG_FABRIC_EVENT) {
353 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
354 evt_data = (char *) &fast_evt_data->un.read_check_error;
355 evt_data_size = sizeof(fast_evt_data->un.
356 read_check_error);
357 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
358 (evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
359 evt_data = (char *) &fast_evt_data->un.fabric_evt;
360 evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
361 } else {
362 lpfc_free_fast_evt(phba, fast_evt_data);
363 return;
364 }
365 } else if (evt_category == FC_REG_SCSI_EVENT) {
366 switch (evt_sub_category) {
367 case LPFC_EVENT_QFULL:
368 case LPFC_EVENT_DEVBSY:
369 evt_data = (char *) &fast_evt_data->un.scsi_evt;
370 evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
371 break;
372 case LPFC_EVENT_CHECK_COND:
373 evt_data = (char *) &fast_evt_data->un.check_cond_evt;
374 evt_data_size = sizeof(fast_evt_data->un.
375 check_cond_evt);
376 break;
377 case LPFC_EVENT_VARQUEDEPTH:
378 evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
379 evt_data_size = sizeof(fast_evt_data->un.
380 queue_depth_evt);
381 break;
382 default:
383 lpfc_free_fast_evt(phba, fast_evt_data);
384 return;
385 }
386 } else {
387 lpfc_free_fast_evt(phba, fast_evt_data);
388 return;
389 }
390
391 fc_host_post_vendor_event(shost,
392 fc_get_event_number(),
393 evt_data_size,
394 evt_data,
395 LPFC_NL_VENDOR_ID);
396
397 lpfc_free_fast_evt(phba, fast_evt_data);
398 return;
399 }
400
401 static void
402 lpfc_work_list_done(struct lpfc_hba *phba)
403 {
404 struct lpfc_work_evt *evtp = NULL;
405 struct lpfc_nodelist *ndlp;
406 int free_evt;
407
408 spin_lock_irq(&phba->hbalock);
409 while (!list_empty(&phba->work_list)) {
410 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
411 evt_listp);
412 spin_unlock_irq(&phba->hbalock);
413 free_evt = 1;
414 switch (evtp->evt) {
415 case LPFC_EVT_ELS_RETRY:
416 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
417 lpfc_els_retry_delay_handler(ndlp);
418 free_evt = 0; /* evt is part of ndlp */
419 /* decrement the node reference count held
420 * for this queued work
421 */
422 lpfc_nlp_put(ndlp);
423 break;
424 case LPFC_EVT_DEV_LOSS:
425 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
426 lpfc_dev_loss_tmo_handler(ndlp);
427 free_evt = 0;
428 /* decrement the node reference count held for
429 * this queued work
430 */
431 lpfc_nlp_put(ndlp);
432 break;
433 case LPFC_EVT_ONLINE:
434 if (phba->link_state < LPFC_LINK_DOWN)
435 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
436 else
437 *(int *) (evtp->evt_arg1) = 0;
438 complete((struct completion *)(evtp->evt_arg2));
439 break;
440 case LPFC_EVT_OFFLINE_PREP:
441 if (phba->link_state >= LPFC_LINK_DOWN)
442 lpfc_offline_prep(phba);
443 *(int *)(evtp->evt_arg1) = 0;
444 complete((struct completion *)(evtp->evt_arg2));
445 break;
446 case LPFC_EVT_OFFLINE:
447 lpfc_offline(phba);
448 lpfc_sli_brdrestart(phba);
449 *(int *)(evtp->evt_arg1) =
450 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
451 lpfc_unblock_mgmt_io(phba);
452 complete((struct completion *)(evtp->evt_arg2));
453 break;
454 case LPFC_EVT_WARM_START:
455 lpfc_offline(phba);
456 lpfc_reset_barrier(phba);
457 lpfc_sli_brdreset(phba);
458 lpfc_hba_down_post(phba);
459 *(int *)(evtp->evt_arg1) =
460 lpfc_sli_brdready(phba, HS_MBRDY);
461 lpfc_unblock_mgmt_io(phba);
462 complete((struct completion *)(evtp->evt_arg2));
463 break;
464 case LPFC_EVT_KILL:
465 lpfc_offline(phba);
466 *(int *)(evtp->evt_arg1)
467 = (phba->pport->stopped)
468 ? 0 : lpfc_sli_brdkill(phba);
469 lpfc_unblock_mgmt_io(phba);
470 complete((struct completion *)(evtp->evt_arg2));
471 break;
472 case LPFC_EVT_FASTPATH_MGMT_EVT:
473 lpfc_send_fastpath_evt(phba, evtp);
474 free_evt = 0;
475 break;
476 }
477 if (free_evt)
478 kfree(evtp);
479 spin_lock_irq(&phba->hbalock);
480 }
481 spin_unlock_irq(&phba->hbalock);
482
483 }
484
485 static void
486 lpfc_work_done(struct lpfc_hba *phba)
487 {
488 struct lpfc_sli_ring *pring;
489 uint32_t ha_copy, status, control, work_port_events;
490 struct lpfc_vport **vports;
491 struct lpfc_vport *vport;
492 int i;
493
494 spin_lock_irq(&phba->hbalock);
495 ha_copy = phba->work_ha;
496 phba->work_ha = 0;
497 spin_unlock_irq(&phba->hbalock);
498
499 /* First, try to post the next mailbox command to SLI4 device */
500 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC)
501 lpfc_sli4_post_async_mbox(phba);
502
503 if (ha_copy & HA_ERATT)
504 /* Handle the error attention event */
505 lpfc_handle_eratt(phba);
506
507 if (ha_copy & HA_MBATT)
508 lpfc_sli_handle_mb_event(phba);
509
510 if (ha_copy & HA_LATT)
511 lpfc_handle_latt(phba);
512
513 /* Process SLI4 events */
514 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
515 if (phba->hba_flag & FCP_XRI_ABORT_EVENT)
516 lpfc_sli4_fcp_xri_abort_event_proc(phba);
517 if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
518 lpfc_sli4_els_xri_abort_event_proc(phba);
519 if (phba->hba_flag & ASYNC_EVENT)
520 lpfc_sli4_async_event_proc(phba);
521 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
522 spin_lock_irq(&phba->hbalock);
523 phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
524 spin_unlock_irq(&phba->hbalock);
525 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
526 }
527 if (phba->hba_flag & HBA_RECEIVE_BUFFER)
528 lpfc_sli4_handle_received_buffer(phba);
529 }
530
531 vports = lpfc_create_vport_work_array(phba);
532 if (vports != NULL)
533 for (i = 0; i <= phba->max_vports; i++) {
534 /*
535 * We could have no vports in array if unloading, so if
536 * this happens then just use the pport
537 */
538 if (vports[i] == NULL && i == 0)
539 vport = phba->pport;
540 else
541 vport = vports[i];
542 if (vport == NULL)
543 break;
544 spin_lock_irq(&vport->work_port_lock);
545 work_port_events = vport->work_port_events;
546 vport->work_port_events &= ~work_port_events;
547 spin_unlock_irq(&vport->work_port_lock);
548 if (work_port_events & WORKER_DISC_TMO)
549 lpfc_disc_timeout_handler(vport);
550 if (work_port_events & WORKER_ELS_TMO)
551 lpfc_els_timeout_handler(vport);
552 if (work_port_events & WORKER_HB_TMO)
553 lpfc_hb_timeout_handler(phba);
554 if (work_port_events & WORKER_MBOX_TMO)
555 lpfc_mbox_timeout_handler(phba);
556 if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
557 lpfc_unblock_fabric_iocbs(phba);
558 if (work_port_events & WORKER_FDMI_TMO)
559 lpfc_fdmi_timeout_handler(vport);
560 if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
561 lpfc_ramp_down_queue_handler(phba);
562 if (work_port_events & WORKER_RAMP_UP_QUEUE)
563 lpfc_ramp_up_queue_handler(phba);
564 }
565 lpfc_destroy_vport_work_array(phba, vports);
566
567 pring = &phba->sli.ring[LPFC_ELS_RING];
568 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING)));
569 status >>= (4*LPFC_ELS_RING);
570 if ((status & HA_RXMASK)
571 || (pring->flag & LPFC_DEFERRED_RING_EVENT)) {
572 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
573 pring->flag |= LPFC_DEFERRED_RING_EVENT;
574 /* Set the lpfc data pending flag */
575 set_bit(LPFC_DATA_READY, &phba->data_flags);
576 } else {
577 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
578 lpfc_sli_handle_slow_ring_event(phba, pring,
579 (status &
580 HA_RXMASK));
581 }
582 /*
583 * Turn on Ring interrupts
584 */
585 if (phba->sli_rev <= LPFC_SLI_REV3) {
586 spin_lock_irq(&phba->hbalock);
587 control = readl(phba->HCregaddr);
588 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
589 lpfc_debugfs_slow_ring_trc(phba,
590 "WRK Enable ring: cntl:x%x hacopy:x%x",
591 control, ha_copy, 0);
592
593 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
594 writel(control, phba->HCregaddr);
595 readl(phba->HCregaddr); /* flush */
596 } else {
597 lpfc_debugfs_slow_ring_trc(phba,
598 "WRK Ring ok: cntl:x%x hacopy:x%x",
599 control, ha_copy, 0);
600 }
601 spin_unlock_irq(&phba->hbalock);
602 }
603 }
604 lpfc_work_list_done(phba);
605 }
606
607 int
608 lpfc_do_work(void *p)
609 {
610 struct lpfc_hba *phba = p;
611 int rc;
612
613 set_user_nice(current, -20);
614 phba->data_flags = 0;
615
616 while (!kthread_should_stop()) {
617 /* wait and check worker queue activities */
618 rc = wait_event_interruptible(phba->work_waitq,
619 (test_and_clear_bit(LPFC_DATA_READY,
620 &phba->data_flags)
621 || kthread_should_stop()));
622 /* Signal wakeup shall terminate the worker thread */
623 if (rc) {
624 lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
625 "0433 Wakeup on signal: rc=x%x\n", rc);
626 break;
627 }
628
629 /* Attend pending lpfc data processing */
630 lpfc_work_done(phba);
631 }
632 phba->worker_thread = NULL;
633 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
634 "0432 Worker thread stopped.\n");
635 return 0;
636 }
637
638 /*
639 * This is only called to handle FC worker events. Since this a rare
640 * occurance, we allocate a struct lpfc_work_evt structure here instead of
641 * embedding it in the IOCB.
642 */
643 int
644 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
645 uint32_t evt)
646 {
647 struct lpfc_work_evt *evtp;
648 unsigned long flags;
649
650 /*
651 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
652 * be queued to worker thread for processing
653 */
654 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
655 if (!evtp)
656 return 0;
657
658 evtp->evt_arg1 = arg1;
659 evtp->evt_arg2 = arg2;
660 evtp->evt = evt;
661
662 spin_lock_irqsave(&phba->hbalock, flags);
663 list_add_tail(&evtp->evt_listp, &phba->work_list);
664 spin_unlock_irqrestore(&phba->hbalock, flags);
665
666 lpfc_worker_wake_up(phba);
667
668 return 1;
669 }
670
671 void
672 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
673 {
674 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
675 struct lpfc_hba *phba = vport->phba;
676 struct lpfc_nodelist *ndlp, *next_ndlp;
677 int rc;
678
679 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
680 if (!NLP_CHK_NODE_ACT(ndlp))
681 continue;
682 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
683 continue;
684 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
685 ((vport->port_type == LPFC_NPIV_PORT) &&
686 (ndlp->nlp_DID == NameServer_DID)))
687 lpfc_unreg_rpi(vport, ndlp);
688
689 /* Leave Fabric nodes alone on link down */
690 if (!remove && ndlp->nlp_type & NLP_FABRIC)
691 continue;
692 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
693 remove
694 ? NLP_EVT_DEVICE_RM
695 : NLP_EVT_DEVICE_RECOVERY);
696 }
697 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
698 lpfc_mbx_unreg_vpi(vport);
699 spin_lock_irq(shost->host_lock);
700 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
701 spin_unlock_irq(shost->host_lock);
702 }
703 }
704
705 void
706 lpfc_port_link_failure(struct lpfc_vport *vport)
707 {
708 /* Cleanup any outstanding RSCN activity */
709 lpfc_els_flush_rscn(vport);
710
711 /* Cleanup any outstanding ELS commands */
712 lpfc_els_flush_cmd(vport);
713
714 lpfc_cleanup_rpis(vport, 0);
715
716 /* Turn off discovery timer if its running */
717 lpfc_can_disctmo(vport);
718 }
719
720 void
721 lpfc_linkdown_port(struct lpfc_vport *vport)
722 {
723 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
724
725 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
726
727 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
728 "Link Down: state:x%x rtry:x%x flg:x%x",
729 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
730
731 lpfc_port_link_failure(vport);
732
733 }
734
735 int
736 lpfc_linkdown(struct lpfc_hba *phba)
737 {
738 struct lpfc_vport *vport = phba->pport;
739 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
740 struct lpfc_vport **vports;
741 LPFC_MBOXQ_t *mb;
742 int i;
743
744 if (phba->link_state == LPFC_LINK_DOWN)
745 return 0;
746 spin_lock_irq(&phba->hbalock);
747 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_DISCOVERED);
748 if (phba->link_state > LPFC_LINK_DOWN) {
749 phba->link_state = LPFC_LINK_DOWN;
750 phba->pport->fc_flag &= ~FC_LBIT;
751 }
752 spin_unlock_irq(&phba->hbalock);
753 vports = lpfc_create_vport_work_array(phba);
754 if (vports != NULL)
755 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
756 /* Issue a LINK DOWN event to all nodes */
757 lpfc_linkdown_port(vports[i]);
758 }
759 lpfc_destroy_vport_work_array(phba, vports);
760 /* Clean up any firmware default rpi's */
761 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
762 if (mb) {
763 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
764 mb->vport = vport;
765 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
766 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
767 == MBX_NOT_FINISHED) {
768 mempool_free(mb, phba->mbox_mem_pool);
769 }
770 }
771
772 /* Setup myDID for link up if we are in pt2pt mode */
773 if (phba->pport->fc_flag & FC_PT2PT) {
774 phba->pport->fc_myDID = 0;
775 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
776 if (mb) {
777 lpfc_config_link(phba, mb);
778 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
779 mb->vport = vport;
780 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
781 == MBX_NOT_FINISHED) {
782 mempool_free(mb, phba->mbox_mem_pool);
783 }
784 }
785 spin_lock_irq(shost->host_lock);
786 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
787 spin_unlock_irq(shost->host_lock);
788 }
789
790 return 0;
791 }
792
793 static void
794 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
795 {
796 struct lpfc_nodelist *ndlp;
797
798 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
799 if (!NLP_CHK_NODE_ACT(ndlp))
800 continue;
801 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
802 continue;
803 if (ndlp->nlp_type & NLP_FABRIC) {
804 /* On Linkup its safe to clean up the ndlp
805 * from Fabric connections.
806 */
807 if (ndlp->nlp_DID != Fabric_DID)
808 lpfc_unreg_rpi(vport, ndlp);
809 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
810 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
811 /* Fail outstanding IO now since device is
812 * marked for PLOGI.
813 */
814 lpfc_unreg_rpi(vport, ndlp);
815 }
816 }
817 }
818
819 static void
820 lpfc_linkup_port(struct lpfc_vport *vport)
821 {
822 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
823 struct lpfc_hba *phba = vport->phba;
824
825 if ((vport->load_flag & FC_UNLOADING) != 0)
826 return;
827
828 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
829 "Link Up: top:x%x speed:x%x flg:x%x",
830 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
831
832 /* If NPIV is not enabled, only bring the physical port up */
833 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
834 (vport != phba->pport))
835 return;
836
837 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
838
839 spin_lock_irq(shost->host_lock);
840 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
841 FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
842 vport->fc_flag |= FC_NDISC_ACTIVE;
843 vport->fc_ns_retry = 0;
844 spin_unlock_irq(shost->host_lock);
845
846 if (vport->fc_flag & FC_LBIT)
847 lpfc_linkup_cleanup_nodes(vport);
848
849 }
850
851 static int
852 lpfc_linkup(struct lpfc_hba *phba)
853 {
854 struct lpfc_vport **vports;
855 int i;
856
857 phba->link_state = LPFC_LINK_UP;
858
859 /* Unblock fabric iocbs if they are blocked */
860 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
861 del_timer_sync(&phba->fabric_block_timer);
862
863 vports = lpfc_create_vport_work_array(phba);
864 if (vports != NULL)
865 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
866 lpfc_linkup_port(vports[i]);
867 lpfc_destroy_vport_work_array(phba, vports);
868 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
869 (phba->sli_rev < LPFC_SLI_REV4))
870 lpfc_issue_clear_la(phba, phba->pport);
871
872 return 0;
873 }
874
875 /*
876 * This routine handles processing a CLEAR_LA mailbox
877 * command upon completion. It is setup in the LPFC_MBOXQ
878 * as the completion routine when the command is
879 * handed off to the SLI layer.
880 */
881 static void
882 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
883 {
884 struct lpfc_vport *vport = pmb->vport;
885 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
886 struct lpfc_sli *psli = &phba->sli;
887 MAILBOX_t *mb = &pmb->u.mb;
888 uint32_t control;
889
890 /* Since we don't do discovery right now, turn these off here */
891 psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
892 psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
893 psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
894
895 /* Check for error */
896 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
897 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
898 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
899 "0320 CLEAR_LA mbxStatus error x%x hba "
900 "state x%x\n",
901 mb->mbxStatus, vport->port_state);
902 phba->link_state = LPFC_HBA_ERROR;
903 goto out;
904 }
905
906 if (vport->port_type == LPFC_PHYSICAL_PORT)
907 phba->link_state = LPFC_HBA_READY;
908
909 spin_lock_irq(&phba->hbalock);
910 psli->sli_flag |= LPFC_PROCESS_LA;
911 control = readl(phba->HCregaddr);
912 control |= HC_LAINT_ENA;
913 writel(control, phba->HCregaddr);
914 readl(phba->HCregaddr); /* flush */
915 spin_unlock_irq(&phba->hbalock);
916 mempool_free(pmb, phba->mbox_mem_pool);
917 return;
918
919 out:
920 /* Device Discovery completes */
921 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
922 "0225 Device Discovery completes\n");
923 mempool_free(pmb, phba->mbox_mem_pool);
924
925 spin_lock_irq(shost->host_lock);
926 vport->fc_flag &= ~FC_ABORT_DISCOVERY;
927 spin_unlock_irq(shost->host_lock);
928
929 lpfc_can_disctmo(vport);
930
931 /* turn on Link Attention interrupts */
932
933 spin_lock_irq(&phba->hbalock);
934 psli->sli_flag |= LPFC_PROCESS_LA;
935 control = readl(phba->HCregaddr);
936 control |= HC_LAINT_ENA;
937 writel(control, phba->HCregaddr);
938 readl(phba->HCregaddr); /* flush */
939 spin_unlock_irq(&phba->hbalock);
940
941 return;
942 }
943
944
945 static void
946 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
947 {
948 struct lpfc_vport *vport = pmb->vport;
949
950 if (pmb->u.mb.mbxStatus)
951 goto out;
952
953 mempool_free(pmb, phba->mbox_mem_pool);
954
955 if (phba->fc_topology == TOPOLOGY_LOOP &&
956 vport->fc_flag & FC_PUBLIC_LOOP &&
957 !(vport->fc_flag & FC_LBIT)) {
958 /* Need to wait for FAN - use discovery timer
959 * for timeout. port_state is identically
960 * LPFC_LOCAL_CFG_LINK while waiting for FAN
961 */
962 lpfc_set_disctmo(vport);
963 return;
964 }
965
966 /* Start discovery by sending a FLOGI. port_state is identically
967 * LPFC_FLOGI while waiting for FLOGI cmpl
968 */
969 if (vport->port_state != LPFC_FLOGI) {
970 lpfc_initial_flogi(vport);
971 }
972 return;
973
974 out:
975 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
976 "0306 CONFIG_LINK mbxStatus error x%x "
977 "HBA state x%x\n",
978 pmb->u.mb.mbxStatus, vport->port_state);
979 mempool_free(pmb, phba->mbox_mem_pool);
980
981 lpfc_linkdown(phba);
982
983 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
984 "0200 CONFIG_LINK bad hba state x%x\n",
985 vport->port_state);
986
987 lpfc_issue_clear_la(phba, vport);
988 return;
989 }
990
991 static void
992 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
993 {
994 struct lpfc_vport *vport = mboxq->vport;
995 unsigned long flags;
996
997 if (mboxq->u.mb.mbxStatus) {
998 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
999 "2017 REG_FCFI mbxStatus error x%x "
1000 "HBA state x%x\n",
1001 mboxq->u.mb.mbxStatus, vport->port_state);
1002 mempool_free(mboxq, phba->mbox_mem_pool);
1003 return;
1004 }
1005
1006 /* Start FCoE discovery by sending a FLOGI. */
1007 phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1008 /* Set the FCFI registered flag */
1009 spin_lock_irqsave(&phba->hbalock, flags);
1010 phba->fcf.fcf_flag |= FCF_REGISTERED;
1011 spin_unlock_irqrestore(&phba->hbalock, flags);
1012 if (vport->port_state != LPFC_FLOGI) {
1013 spin_lock_irqsave(&phba->hbalock, flags);
1014 phba->fcf.fcf_flag |= (FCF_DISCOVERED | FCF_IN_USE);
1015 spin_unlock_irqrestore(&phba->hbalock, flags);
1016 lpfc_initial_flogi(vport);
1017 }
1018
1019 mempool_free(mboxq, phba->mbox_mem_pool);
1020 return;
1021 }
1022
1023 /**
1024 * lpfc_fab_name_match - Check if the fcf fabric name match.
1025 * @fab_name: pointer to fabric name.
1026 * @new_fcf_record: pointer to fcf record.
1027 *
1028 * This routine compare the fcf record's fabric name with provided
1029 * fabric name. If the fabric name are identical this function
1030 * returns 1 else return 0.
1031 **/
1032 static uint32_t
1033 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1034 {
1035 if ((fab_name[0] ==
1036 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record)) &&
1037 (fab_name[1] ==
1038 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record)) &&
1039 (fab_name[2] ==
1040 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record)) &&
1041 (fab_name[3] ==
1042 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record)) &&
1043 (fab_name[4] ==
1044 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record)) &&
1045 (fab_name[5] ==
1046 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record)) &&
1047 (fab_name[6] ==
1048 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record)) &&
1049 (fab_name[7] ==
1050 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record)))
1051 return 1;
1052 else
1053 return 0;
1054 }
1055
1056 /**
1057 * lpfc_mac_addr_match - Check if the fcf mac address match.
1058 * @phba: pointer to lpfc hba data structure.
1059 * @new_fcf_record: pointer to fcf record.
1060 *
1061 * This routine compare the fcf record's mac address with HBA's
1062 * FCF mac address. If the mac addresses are identical this function
1063 * returns 1 else return 0.
1064 **/
1065 static uint32_t
1066 lpfc_mac_addr_match(struct lpfc_hba *phba, struct fcf_record *new_fcf_record)
1067 {
1068 if ((phba->fcf.mac_addr[0] ==
1069 bf_get(lpfc_fcf_record_mac_0, new_fcf_record)) &&
1070 (phba->fcf.mac_addr[1] ==
1071 bf_get(lpfc_fcf_record_mac_1, new_fcf_record)) &&
1072 (phba->fcf.mac_addr[2] ==
1073 bf_get(lpfc_fcf_record_mac_2, new_fcf_record)) &&
1074 (phba->fcf.mac_addr[3] ==
1075 bf_get(lpfc_fcf_record_mac_3, new_fcf_record)) &&
1076 (phba->fcf.mac_addr[4] ==
1077 bf_get(lpfc_fcf_record_mac_4, new_fcf_record)) &&
1078 (phba->fcf.mac_addr[5] ==
1079 bf_get(lpfc_fcf_record_mac_5, new_fcf_record)))
1080 return 1;
1081 else
1082 return 0;
1083 }
1084
1085 /**
1086 * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1087 * @phba: pointer to lpfc hba data structure.
1088 * @new_fcf_record: pointer to fcf record.
1089 *
1090 * This routine copies the FCF information from the FCF
1091 * record to lpfc_hba data structure.
1092 **/
1093 static void
1094 lpfc_copy_fcf_record(struct lpfc_hba *phba, struct fcf_record *new_fcf_record)
1095 {
1096 phba->fcf.fabric_name[0] =
1097 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1098 phba->fcf.fabric_name[1] =
1099 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1100 phba->fcf.fabric_name[2] =
1101 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1102 phba->fcf.fabric_name[3] =
1103 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1104 phba->fcf.fabric_name[4] =
1105 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1106 phba->fcf.fabric_name[5] =
1107 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1108 phba->fcf.fabric_name[6] =
1109 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1110 phba->fcf.fabric_name[7] =
1111 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1112 phba->fcf.mac_addr[0] =
1113 bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1114 phba->fcf.mac_addr[1] =
1115 bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1116 phba->fcf.mac_addr[2] =
1117 bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1118 phba->fcf.mac_addr[3] =
1119 bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1120 phba->fcf.mac_addr[4] =
1121 bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1122 phba->fcf.mac_addr[5] =
1123 bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1124 phba->fcf.fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1125 phba->fcf.priority = new_fcf_record->fip_priority;
1126 }
1127
1128 /**
1129 * lpfc_register_fcf - Register the FCF with hba.
1130 * @phba: pointer to lpfc hba data structure.
1131 *
1132 * This routine issues a register fcfi mailbox command to register
1133 * the fcf with HBA.
1134 **/
1135 static void
1136 lpfc_register_fcf(struct lpfc_hba *phba)
1137 {
1138 LPFC_MBOXQ_t *fcf_mbxq;
1139 int rc;
1140 unsigned long flags;
1141
1142 spin_lock_irqsave(&phba->hbalock, flags);
1143
1144 /* If the FCF is not availabe do nothing. */
1145 if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1146 spin_unlock_irqrestore(&phba->hbalock, flags);
1147 return;
1148 }
1149
1150 /* The FCF is already registered, start discovery */
1151 if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1152 phba->fcf.fcf_flag |= (FCF_DISCOVERED | FCF_IN_USE);
1153 spin_unlock_irqrestore(&phba->hbalock, flags);
1154 if (phba->pport->port_state != LPFC_FLOGI)
1155 lpfc_initial_flogi(phba->pport);
1156 return;
1157 }
1158 spin_unlock_irqrestore(&phba->hbalock, flags);
1159
1160 fcf_mbxq = mempool_alloc(phba->mbox_mem_pool,
1161 GFP_KERNEL);
1162 if (!fcf_mbxq)
1163 return;
1164
1165 lpfc_reg_fcfi(phba, fcf_mbxq);
1166 fcf_mbxq->vport = phba->pport;
1167 fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1168 rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1169 if (rc == MBX_NOT_FINISHED)
1170 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1171
1172 return;
1173 }
1174
1175 /**
1176 * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1177 * @phba: pointer to lpfc hba data structure.
1178 * @new_fcf_record: pointer to fcf record.
1179 * @boot_flag: Indicates if this record used by boot bios.
1180 * @addr_mode: The address mode to be used by this FCF
1181 *
1182 * This routine compare the fcf record with connect list obtained from the
1183 * config region to decide if this FCF can be used for SAN discovery. It returns
1184 * 1 if this record can be used for SAN discovery else return zero. If this FCF
1185 * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1186 * is used by boot bios and addr_mode will indicate the addressing mode to be
1187 * used for this FCF when the function returns.
1188 * If the FCF record need to be used with a particular vlan id, the vlan is
1189 * set in the vlan_id on return of the function. If not VLAN tagging need to
1190 * be used with the FCF vlan_id will be set to 0xFFFF;
1191 **/
1192 static int
1193 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1194 struct fcf_record *new_fcf_record,
1195 uint32_t *boot_flag, uint32_t *addr_mode,
1196 uint16_t *vlan_id)
1197 {
1198 struct lpfc_fcf_conn_entry *conn_entry;
1199
1200 /* If FCF not available return 0 */
1201 if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1202 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record))
1203 return 0;
1204
1205 if (!phba->cfg_enable_fip) {
1206 *boot_flag = 0;
1207 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1208 new_fcf_record);
1209 if (phba->valid_vlan)
1210 *vlan_id = phba->vlan_id;
1211 else
1212 *vlan_id = 0xFFFF;
1213 return 1;
1214 }
1215
1216 /*
1217 * If there are no FCF connection table entry, driver connect to all
1218 * FCFs.
1219 */
1220 if (list_empty(&phba->fcf_conn_rec_list)) {
1221 *boot_flag = 0;
1222 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1223 new_fcf_record);
1224
1225 /*
1226 * When there are no FCF connect entries, use driver's default
1227 * addressing mode - FPMA.
1228 */
1229 if (*addr_mode & LPFC_FCF_FPMA)
1230 *addr_mode = LPFC_FCF_FPMA;
1231
1232 *vlan_id = 0xFFFF;
1233 return 1;
1234 }
1235
1236 list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list, list) {
1237 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
1238 continue;
1239
1240 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
1241 !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
1242 new_fcf_record))
1243 continue;
1244
1245 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
1246 /*
1247 * If the vlan bit map does not have the bit set for the
1248 * vlan id to be used, then it is not a match.
1249 */
1250 if (!(new_fcf_record->vlan_bitmap
1251 [conn_entry->conn_rec.vlan_tag / 8] &
1252 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
1253 continue;
1254 }
1255
1256 /*
1257 * If connection record does not support any addressing mode,
1258 * skip the FCF record.
1259 */
1260 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
1261 & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
1262 continue;
1263
1264 /*
1265 * Check if the connection record specifies a required
1266 * addressing mode.
1267 */
1268 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1269 !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
1270
1271 /*
1272 * If SPMA required but FCF not support this continue.
1273 */
1274 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1275 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1276 new_fcf_record) & LPFC_FCF_SPMA))
1277 continue;
1278
1279 /*
1280 * If FPMA required but FCF not support this continue.
1281 */
1282 if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1283 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1284 new_fcf_record) & LPFC_FCF_FPMA))
1285 continue;
1286 }
1287
1288 /*
1289 * This fcf record matches filtering criteria.
1290 */
1291 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
1292 *boot_flag = 1;
1293 else
1294 *boot_flag = 0;
1295
1296 /*
1297 * If user did not specify any addressing mode, or if the
1298 * prefered addressing mode specified by user is not supported
1299 * by FCF, allow fabric to pick the addressing mode.
1300 */
1301 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1302 new_fcf_record);
1303 /*
1304 * If the user specified a required address mode, assign that
1305 * address mode
1306 */
1307 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1308 (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
1309 *addr_mode = (conn_entry->conn_rec.flags &
1310 FCFCNCT_AM_SPMA) ?
1311 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
1312 /*
1313 * If the user specified a prefered address mode, use the
1314 * addr mode only if FCF support the addr_mode.
1315 */
1316 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1317 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1318 (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1319 (*addr_mode & LPFC_FCF_SPMA))
1320 *addr_mode = LPFC_FCF_SPMA;
1321 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1322 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1323 !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1324 (*addr_mode & LPFC_FCF_FPMA))
1325 *addr_mode = LPFC_FCF_FPMA;
1326
1327 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
1328 *vlan_id = conn_entry->conn_rec.vlan_tag;
1329 else
1330 *vlan_id = 0xFFFF;
1331
1332 return 1;
1333 }
1334
1335 return 0;
1336 }
1337
1338 /**
1339 * lpfc_mbx_cmpl_read_fcf_record - Completion handler for read_fcf mbox.
1340 * @phba: pointer to lpfc hba data structure.
1341 * @mboxq: pointer to mailbox object.
1342 *
1343 * This function iterate through all the fcf records available in
1344 * HBA and choose the optimal FCF record for discovery. After finding
1345 * the FCF for discovery it register the FCF record and kick start
1346 * discovery.
1347 * If FCF_IN_USE flag is set in currently used FCF, the routine try to
1348 * use a FCF record which match fabric name and mac address of the
1349 * currently used FCF record.
1350 * If the driver support only one FCF, it will try to use the FCF record
1351 * used by BOOT_BIOS.
1352 */
1353 void
1354 lpfc_mbx_cmpl_read_fcf_record(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1355 {
1356 void *virt_addr;
1357 dma_addr_t phys_addr;
1358 uint8_t *bytep;
1359 struct lpfc_mbx_sge sge;
1360 struct lpfc_mbx_read_fcf_tbl *read_fcf;
1361 uint32_t shdr_status, shdr_add_status;
1362 union lpfc_sli4_cfg_shdr *shdr;
1363 struct fcf_record *new_fcf_record;
1364 int rc;
1365 uint32_t boot_flag, addr_mode;
1366 uint32_t next_fcf_index;
1367 unsigned long flags;
1368 uint16_t vlan_id;
1369
1370 /* Get the first SGE entry from the non-embedded DMA memory. This
1371 * routine only uses a single SGE.
1372 */
1373 lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
1374 phys_addr = getPaddr(sge.pa_hi, sge.pa_lo);
1375 if (unlikely(!mboxq->sge_array)) {
1376 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1377 "2524 Failed to get the non-embedded SGE "
1378 "virtual address\n");
1379 goto out;
1380 }
1381 virt_addr = mboxq->sge_array->addr[0];
1382
1383 shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
1384 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
1385 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
1386 &shdr->response);
1387 /*
1388 * The FCF Record was read and there is no reason for the driver
1389 * to maintain the FCF record data or memory. Instead, just need
1390 * to book keeping the FCFIs can be used.
1391 */
1392 if (shdr_status || shdr_add_status) {
1393 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1394 "2521 READ_FCF_RECORD mailbox failed "
1395 "with status x%x add_status x%x, mbx\n",
1396 shdr_status, shdr_add_status);
1397 goto out;
1398 }
1399 /* Interpreting the returned information of FCF records */
1400 read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
1401 lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
1402 sizeof(struct lpfc_mbx_read_fcf_tbl));
1403 next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
1404
1405 new_fcf_record = (struct fcf_record *)(virt_addr +
1406 sizeof(struct lpfc_mbx_read_fcf_tbl));
1407 lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
1408 sizeof(struct fcf_record));
1409 bytep = virt_addr + sizeof(union lpfc_sli4_cfg_shdr);
1410
1411 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record,
1412 &boot_flag, &addr_mode,
1413 &vlan_id);
1414 /*
1415 * If the fcf record does not match with connect list entries
1416 * read the next entry.
1417 */
1418 if (!rc)
1419 goto read_next_fcf;
1420 /*
1421 * If this is not the first FCF discovery of the HBA, use last
1422 * FCF record for the discovery.
1423 */
1424 spin_lock_irqsave(&phba->hbalock, flags);
1425 if (phba->fcf.fcf_flag & FCF_IN_USE) {
1426 if (lpfc_fab_name_match(phba->fcf.fabric_name,
1427 new_fcf_record) &&
1428 lpfc_mac_addr_match(phba, new_fcf_record)) {
1429 phba->fcf.fcf_flag |= FCF_AVAILABLE;
1430 spin_unlock_irqrestore(&phba->hbalock, flags);
1431 goto out;
1432 }
1433 spin_unlock_irqrestore(&phba->hbalock, flags);
1434 goto read_next_fcf;
1435 }
1436 if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
1437 /*
1438 * If the current FCF record does not have boot flag
1439 * set and new fcf record has boot flag set, use the
1440 * new fcf record.
1441 */
1442 if (boot_flag && !(phba->fcf.fcf_flag & FCF_BOOT_ENABLE)) {
1443 /* Use this FCF record */
1444 lpfc_copy_fcf_record(phba, new_fcf_record);
1445 phba->fcf.addr_mode = addr_mode;
1446 phba->fcf.fcf_flag |= FCF_BOOT_ENABLE;
1447 if (vlan_id != 0xFFFF) {
1448 phba->fcf.fcf_flag |= FCF_VALID_VLAN;
1449 phba->fcf.vlan_id = vlan_id;
1450 }
1451 spin_unlock_irqrestore(&phba->hbalock, flags);
1452 goto read_next_fcf;
1453 }
1454 /*
1455 * If the current FCF record has boot flag set and the
1456 * new FCF record does not have boot flag, read the next
1457 * FCF record.
1458 */
1459 if (!boot_flag && (phba->fcf.fcf_flag & FCF_BOOT_ENABLE)) {
1460 spin_unlock_irqrestore(&phba->hbalock, flags);
1461 goto read_next_fcf;
1462 }
1463 /*
1464 * If there is a record with lower priority value for
1465 * the current FCF, use that record.
1466 */
1467 if (lpfc_fab_name_match(phba->fcf.fabric_name, new_fcf_record)
1468 && (new_fcf_record->fip_priority <
1469 phba->fcf.priority)) {
1470 /* Use this FCF record */
1471 lpfc_copy_fcf_record(phba, new_fcf_record);
1472 phba->fcf.addr_mode = addr_mode;
1473 if (vlan_id != 0xFFFF) {
1474 phba->fcf.fcf_flag |= FCF_VALID_VLAN;
1475 phba->fcf.vlan_id = vlan_id;
1476 }
1477 spin_unlock_irqrestore(&phba->hbalock, flags);
1478 goto read_next_fcf;
1479 }
1480 spin_unlock_irqrestore(&phba->hbalock, flags);
1481 goto read_next_fcf;
1482 }
1483 /*
1484 * This is the first available FCF record, use this
1485 * record.
1486 */
1487 lpfc_copy_fcf_record(phba, new_fcf_record);
1488 phba->fcf.addr_mode = addr_mode;
1489 if (boot_flag)
1490 phba->fcf.fcf_flag |= FCF_BOOT_ENABLE;
1491 phba->fcf.fcf_flag |= FCF_AVAILABLE;
1492 if (vlan_id != 0xFFFF) {
1493 phba->fcf.fcf_flag |= FCF_VALID_VLAN;
1494 phba->fcf.vlan_id = vlan_id;
1495 }
1496 spin_unlock_irqrestore(&phba->hbalock, flags);
1497 goto read_next_fcf;
1498
1499 read_next_fcf:
1500 lpfc_sli4_mbox_cmd_free(phba, mboxq);
1501 if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0)
1502 lpfc_register_fcf(phba);
1503 else
1504 lpfc_sli4_read_fcf_record(phba, next_fcf_index);
1505 return;
1506
1507 out:
1508 lpfc_sli4_mbox_cmd_free(phba, mboxq);
1509 lpfc_register_fcf(phba);
1510
1511 return;
1512 }
1513
1514 /**
1515 * lpfc_start_fdiscs - send fdiscs for each vports on this port.
1516 * @phba: pointer to lpfc hba data structure.
1517 *
1518 * This function loops through the list of vports on the @phba and issues an
1519 * FDISC if possible.
1520 */
1521 void
1522 lpfc_start_fdiscs(struct lpfc_hba *phba)
1523 {
1524 struct lpfc_vport **vports;
1525 int i;
1526
1527 vports = lpfc_create_vport_work_array(phba);
1528 if (vports != NULL) {
1529 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
1530 if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
1531 continue;
1532 /* There are no vpi for this vport */
1533 if (vports[i]->vpi > phba->max_vpi) {
1534 lpfc_vport_set_state(vports[i],
1535 FC_VPORT_FAILED);
1536 continue;
1537 }
1538 if (phba->fc_topology == TOPOLOGY_LOOP) {
1539 lpfc_vport_set_state(vports[i],
1540 FC_VPORT_LINKDOWN);
1541 continue;
1542 }
1543 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1544 lpfc_initial_fdisc(vports[i]);
1545 else {
1546 lpfc_vport_set_state(vports[i],
1547 FC_VPORT_NO_FABRIC_SUPP);
1548 lpfc_printf_vlog(vports[i], KERN_ERR,
1549 LOG_ELS,
1550 "0259 No NPIV "
1551 "Fabric support\n");
1552 }
1553 }
1554 }
1555 lpfc_destroy_vport_work_array(phba, vports);
1556 }
1557
1558 void
1559 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1560 {
1561 struct lpfc_dmabuf *dmabuf = mboxq->context1;
1562 struct lpfc_vport *vport = mboxq->vport;
1563
1564 if (mboxq->u.mb.mbxStatus) {
1565 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1566 "2018 REG_VFI mbxStatus error x%x "
1567 "HBA state x%x\n",
1568 mboxq->u.mb.mbxStatus, vport->port_state);
1569 if (phba->fc_topology == TOPOLOGY_LOOP) {
1570 /* FLOGI failed, use loop map to make discovery list */
1571 lpfc_disc_list_loopmap(vport);
1572 /* Start discovery */
1573 lpfc_disc_start(vport);
1574 goto fail_free_mem;
1575 }
1576 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1577 goto fail_free_mem;
1578 }
1579 /* Mark the vport has registered with its VFI */
1580 vport->vfi_state |= LPFC_VFI_REGISTERED;
1581
1582 if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
1583 lpfc_start_fdiscs(phba);
1584 lpfc_do_scr_ns_plogi(phba, vport);
1585 }
1586
1587 fail_free_mem:
1588 mempool_free(mboxq, phba->mbox_mem_pool);
1589 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
1590 kfree(dmabuf);
1591 return;
1592 }
1593
1594 static void
1595 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1596 {
1597 MAILBOX_t *mb = &pmb->u.mb;
1598 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
1599 struct lpfc_vport *vport = pmb->vport;
1600
1601
1602 /* Check for error */
1603 if (mb->mbxStatus) {
1604 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
1605 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1606 "0319 READ_SPARAM mbxStatus error x%x "
1607 "hba state x%x>\n",
1608 mb->mbxStatus, vport->port_state);
1609 lpfc_linkdown(phba);
1610 goto out;
1611 }
1612
1613 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
1614 sizeof (struct serv_parm));
1615 if (phba->cfg_soft_wwnn)
1616 u64_to_wwn(phba->cfg_soft_wwnn,
1617 vport->fc_sparam.nodeName.u.wwn);
1618 if (phba->cfg_soft_wwpn)
1619 u64_to_wwn(phba->cfg_soft_wwpn,
1620 vport->fc_sparam.portName.u.wwn);
1621 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
1622 sizeof(vport->fc_nodename));
1623 memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
1624 sizeof(vport->fc_portname));
1625 if (vport->port_type == LPFC_PHYSICAL_PORT) {
1626 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
1627 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
1628 }
1629
1630 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1631 kfree(mp);
1632 mempool_free(pmb, phba->mbox_mem_pool);
1633 return;
1634
1635 out:
1636 pmb->context1 = NULL;
1637 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1638 kfree(mp);
1639 lpfc_issue_clear_la(phba, vport);
1640 mempool_free(pmb, phba->mbox_mem_pool);
1641 return;
1642 }
1643
1644 static void
1645 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
1646 {
1647 struct lpfc_vport *vport = phba->pport;
1648 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
1649 int i;
1650 struct lpfc_dmabuf *mp;
1651 int rc;
1652 struct fcf_record *fcf_record;
1653
1654 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1655
1656 spin_lock_irq(&phba->hbalock);
1657 switch (la->UlnkSpeed) {
1658 case LA_1GHZ_LINK:
1659 phba->fc_linkspeed = LA_1GHZ_LINK;
1660 break;
1661 case LA_2GHZ_LINK:
1662 phba->fc_linkspeed = LA_2GHZ_LINK;
1663 break;
1664 case LA_4GHZ_LINK:
1665 phba->fc_linkspeed = LA_4GHZ_LINK;
1666 break;
1667 case LA_8GHZ_LINK:
1668 phba->fc_linkspeed = LA_8GHZ_LINK;
1669 break;
1670 case LA_10GHZ_LINK:
1671 phba->fc_linkspeed = LA_10GHZ_LINK;
1672 break;
1673 default:
1674 phba->fc_linkspeed = LA_UNKNW_LINK;
1675 break;
1676 }
1677
1678 phba->fc_topology = la->topology;
1679 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
1680
1681 if (phba->fc_topology == TOPOLOGY_LOOP) {
1682 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
1683
1684 if (phba->cfg_enable_npiv)
1685 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1686 "1309 Link Up Event npiv not supported in loop "
1687 "topology\n");
1688 /* Get Loop Map information */
1689 if (la->il)
1690 vport->fc_flag |= FC_LBIT;
1691
1692 vport->fc_myDID = la->granted_AL_PA;
1693 i = la->un.lilpBde64.tus.f.bdeSize;
1694
1695 if (i == 0) {
1696 phba->alpa_map[0] = 0;
1697 } else {
1698 if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
1699 int numalpa, j, k;
1700 union {
1701 uint8_t pamap[16];
1702 struct {
1703 uint32_t wd1;
1704 uint32_t wd2;
1705 uint32_t wd3;
1706 uint32_t wd4;
1707 } pa;
1708 } un;
1709 numalpa = phba->alpa_map[0];
1710 j = 0;
1711 while (j < numalpa) {
1712 memset(un.pamap, 0, 16);
1713 for (k = 1; j < numalpa; k++) {
1714 un.pamap[k - 1] =
1715 phba->alpa_map[j + 1];
1716 j++;
1717 if (k == 16)
1718 break;
1719 }
1720 /* Link Up Event ALPA map */
1721 lpfc_printf_log(phba,
1722 KERN_WARNING,
1723 LOG_LINK_EVENT,
1724 "1304 Link Up Event "
1725 "ALPA map Data: x%x "
1726 "x%x x%x x%x\n",
1727 un.pa.wd1, un.pa.wd2,
1728 un.pa.wd3, un.pa.wd4);
1729 }
1730 }
1731 }
1732 } else {
1733 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
1734 if (phba->max_vpi && phba->cfg_enable_npiv &&
1735 (phba->sli_rev == 3))
1736 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
1737 }
1738 vport->fc_myDID = phba->fc_pref_DID;
1739 vport->fc_flag |= FC_LBIT;
1740 }
1741 spin_unlock_irq(&phba->hbalock);
1742
1743 lpfc_linkup(phba);
1744 if (sparam_mbox) {
1745 lpfc_read_sparam(phba, sparam_mbox, 0);
1746 sparam_mbox->vport = vport;
1747 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1748 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
1749 if (rc == MBX_NOT_FINISHED) {
1750 mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
1751 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1752 kfree(mp);
1753 mempool_free(sparam_mbox, phba->mbox_mem_pool);
1754 goto out;
1755 }
1756 }
1757
1758 if (!(phba->hba_flag & HBA_FCOE_SUPPORT)) {
1759 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1760 if (!cfglink_mbox)
1761 goto out;
1762 vport->port_state = LPFC_LOCAL_CFG_LINK;
1763 lpfc_config_link(phba, cfglink_mbox);
1764 cfglink_mbox->vport = vport;
1765 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
1766 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
1767 if (rc == MBX_NOT_FINISHED) {
1768 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1769 goto out;
1770 }
1771 } else {
1772 /*
1773 * Add the driver's default FCF record at FCF index 0 now. This
1774 * is phase 1 implementation that support FCF index 0 and driver
1775 * defaults.
1776 */
1777 if (phba->cfg_enable_fip == 0) {
1778 fcf_record = kzalloc(sizeof(struct fcf_record),
1779 GFP_KERNEL);
1780 if (unlikely(!fcf_record)) {
1781 lpfc_printf_log(phba, KERN_ERR,
1782 LOG_MBOX | LOG_SLI,
1783 "2554 Could not allocate memmory for "
1784 "fcf record\n");
1785 rc = -ENODEV;
1786 goto out;
1787 }
1788
1789 lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
1790 LPFC_FCOE_FCF_DEF_INDEX);
1791 rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
1792 if (unlikely(rc)) {
1793 lpfc_printf_log(phba, KERN_ERR,
1794 LOG_MBOX | LOG_SLI,
1795 "2013 Could not manually add FCF "
1796 "record 0, status %d\n", rc);
1797 rc = -ENODEV;
1798 kfree(fcf_record);
1799 goto out;
1800 }
1801 kfree(fcf_record);
1802 }
1803 /*
1804 * The driver is expected to do FIP/FCF. Call the port
1805 * and get the FCF Table.
1806 */
1807 rc = lpfc_sli4_read_fcf_record(phba,
1808 LPFC_FCOE_FCF_GET_FIRST);
1809 if (rc)
1810 goto out;
1811 }
1812
1813 return;
1814 out:
1815 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1816 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1817 "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
1818 vport->port_state, sparam_mbox, cfglink_mbox);
1819 lpfc_issue_clear_la(phba, vport);
1820 return;
1821 }
1822
1823 static void
1824 lpfc_enable_la(struct lpfc_hba *phba)
1825 {
1826 uint32_t control;
1827 struct lpfc_sli *psli = &phba->sli;
1828 spin_lock_irq(&phba->hbalock);
1829 psli->sli_flag |= LPFC_PROCESS_LA;
1830 if (phba->sli_rev <= LPFC_SLI_REV3) {
1831 control = readl(phba->HCregaddr);
1832 control |= HC_LAINT_ENA;
1833 writel(control, phba->HCregaddr);
1834 readl(phba->HCregaddr); /* flush */
1835 }
1836 spin_unlock_irq(&phba->hbalock);
1837 }
1838
1839 static void
1840 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
1841 {
1842 lpfc_linkdown(phba);
1843 lpfc_enable_la(phba);
1844 lpfc_unregister_unused_fcf(phba);
1845 /* turn on Link Attention interrupts - no CLEAR_LA needed */
1846 }
1847
1848
1849 /*
1850 * This routine handles processing a READ_LA mailbox
1851 * command upon completion. It is setup in the LPFC_MBOXQ
1852 * as the completion routine when the command is
1853 * handed off to the SLI layer.
1854 */
1855 void
1856 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1857 {
1858 struct lpfc_vport *vport = pmb->vport;
1859 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1860 READ_LA_VAR *la;
1861 MAILBOX_t *mb = &pmb->u.mb;
1862 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1863
1864 /* Unblock ELS traffic */
1865 phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1866 /* Check for error */
1867 if (mb->mbxStatus) {
1868 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1869 "1307 READ_LA mbox error x%x state x%x\n",
1870 mb->mbxStatus, vport->port_state);
1871 lpfc_mbx_issue_link_down(phba);
1872 phba->link_state = LPFC_HBA_ERROR;
1873 goto lpfc_mbx_cmpl_read_la_free_mbuf;
1874 }
1875
1876 la = (READ_LA_VAR *) &pmb->u.mb.un.varReadLA;
1877
1878 memcpy(&phba->alpa_map[0], mp->virt, 128);
1879
1880 spin_lock_irq(shost->host_lock);
1881 if (la->pb)
1882 vport->fc_flag |= FC_BYPASSED_MODE;
1883 else
1884 vport->fc_flag &= ~FC_BYPASSED_MODE;
1885 spin_unlock_irq(shost->host_lock);
1886
1887 if ((phba->fc_eventTag < la->eventTag) ||
1888 (phba->fc_eventTag == la->eventTag)) {
1889 phba->fc_stat.LinkMultiEvent++;
1890 if (la->attType == AT_LINK_UP)
1891 if (phba->fc_eventTag != 0)
1892 lpfc_linkdown(phba);
1893 }
1894
1895 phba->fc_eventTag = la->eventTag;
1896 if (la->mm)
1897 phba->sli.sli_flag |= LPFC_MENLO_MAINT;
1898 else
1899 phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
1900
1901 if (la->attType == AT_LINK_UP && (!la->mm)) {
1902 phba->fc_stat.LinkUp++;
1903 if (phba->link_flag & LS_LOOPBACK_MODE) {
1904 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1905 "1306 Link Up Event in loop back mode "
1906 "x%x received Data: x%x x%x x%x x%x\n",
1907 la->eventTag, phba->fc_eventTag,
1908 la->granted_AL_PA, la->UlnkSpeed,
1909 phba->alpa_map[0]);
1910 } else {
1911 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1912 "1303 Link Up Event x%x received "
1913 "Data: x%x x%x x%x x%x x%x x%x %d\n",
1914 la->eventTag, phba->fc_eventTag,
1915 la->granted_AL_PA, la->UlnkSpeed,
1916 phba->alpa_map[0],
1917 la->mm, la->fa,
1918 phba->wait_4_mlo_maint_flg);
1919 }
1920 lpfc_mbx_process_link_up(phba, la);
1921 } else if (la->attType == AT_LINK_DOWN) {
1922 phba->fc_stat.LinkDown++;
1923 if (phba->link_flag & LS_LOOPBACK_MODE) {
1924 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1925 "1308 Link Down Event in loop back mode "
1926 "x%x received "
1927 "Data: x%x x%x x%x\n",
1928 la->eventTag, phba->fc_eventTag,
1929 phba->pport->port_state, vport->fc_flag);
1930 }
1931 else {
1932 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1933 "1305 Link Down Event x%x received "
1934 "Data: x%x x%x x%x x%x x%x\n",
1935 la->eventTag, phba->fc_eventTag,
1936 phba->pport->port_state, vport->fc_flag,
1937 la->mm, la->fa);
1938 }
1939 lpfc_mbx_issue_link_down(phba);
1940 }
1941 if (la->mm && la->attType == AT_LINK_UP) {
1942 if (phba->link_state != LPFC_LINK_DOWN) {
1943 phba->fc_stat.LinkDown++;
1944 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1945 "1312 Link Down Event x%x received "
1946 "Data: x%x x%x x%x\n",
1947 la->eventTag, phba->fc_eventTag,
1948 phba->pport->port_state, vport->fc_flag);
1949 lpfc_mbx_issue_link_down(phba);
1950 } else
1951 lpfc_enable_la(phba);
1952
1953 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1954 "1310 Menlo Maint Mode Link up Event x%x rcvd "
1955 "Data: x%x x%x x%x\n",
1956 la->eventTag, phba->fc_eventTag,
1957 phba->pport->port_state, vport->fc_flag);
1958 /*
1959 * The cmnd that triggered this will be waiting for this
1960 * signal.
1961 */
1962 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
1963 if (phba->wait_4_mlo_maint_flg) {
1964 phba->wait_4_mlo_maint_flg = 0;
1965 wake_up_interruptible(&phba->wait_4_mlo_m_q);
1966 }
1967 }
1968
1969 if (la->fa) {
1970 if (la->mm)
1971 lpfc_issue_clear_la(phba, vport);
1972 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1973 "1311 fa %d\n", la->fa);
1974 }
1975
1976 lpfc_mbx_cmpl_read_la_free_mbuf:
1977 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1978 kfree(mp);
1979 mempool_free(pmb, phba->mbox_mem_pool);
1980 return;
1981 }
1982
1983 /*
1984 * This routine handles processing a REG_LOGIN mailbox
1985 * command upon completion. It is setup in the LPFC_MBOXQ
1986 * as the completion routine when the command is
1987 * handed off to the SLI layer.
1988 */
1989 void
1990 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1991 {
1992 struct lpfc_vport *vport = pmb->vport;
1993 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1994 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1995
1996 pmb->context1 = NULL;
1997
1998 /* Good status, call state machine */
1999 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
2000 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2001 kfree(mp);
2002 mempool_free(pmb, phba->mbox_mem_pool);
2003 /* decrement the node reference count held for this callback
2004 * function.
2005 */
2006 lpfc_nlp_put(ndlp);
2007
2008 return;
2009 }
2010
2011 static void
2012 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2013 {
2014 MAILBOX_t *mb = &pmb->u.mb;
2015 struct lpfc_vport *vport = pmb->vport;
2016 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2017
2018 switch (mb->mbxStatus) {
2019 case 0x0011:
2020 case 0x0020:
2021 case 0x9700:
2022 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2023 "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
2024 mb->mbxStatus);
2025 break;
2026 }
2027 vport->unreg_vpi_cmpl = VPORT_OK;
2028 mempool_free(pmb, phba->mbox_mem_pool);
2029 /*
2030 * This shost reference might have been taken at the beginning of
2031 * lpfc_vport_delete()
2032 */
2033 if (vport->load_flag & FC_UNLOADING)
2034 scsi_host_put(shost);
2035 }
2036
2037 int
2038 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
2039 {
2040 struct lpfc_hba *phba = vport->phba;
2041 LPFC_MBOXQ_t *mbox;
2042 int rc;
2043
2044 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2045 if (!mbox)
2046 return 1;
2047
2048 lpfc_unreg_vpi(phba, vport->vpi, mbox);
2049 mbox->vport = vport;
2050 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
2051 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2052 if (rc == MBX_NOT_FINISHED) {
2053 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
2054 "1800 Could not issue unreg_vpi\n");
2055 mempool_free(mbox, phba->mbox_mem_pool);
2056 vport->unreg_vpi_cmpl = VPORT_ERROR;
2057 return rc;
2058 }
2059 return 0;
2060 }
2061
2062 static void
2063 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2064 {
2065 struct lpfc_vport *vport = pmb->vport;
2066 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2067 MAILBOX_t *mb = &pmb->u.mb;
2068
2069 switch (mb->mbxStatus) {
2070 case 0x0011:
2071 case 0x9601:
2072 case 0x9602:
2073 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2074 "0912 cmpl_reg_vpi, mb status = 0x%x\n",
2075 mb->mbxStatus);
2076 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2077 spin_lock_irq(shost->host_lock);
2078 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2079 spin_unlock_irq(shost->host_lock);
2080 vport->fc_myDID = 0;
2081 goto out;
2082 }
2083
2084 vport->num_disc_nodes = 0;
2085 /* go thru NPR list and issue ELS PLOGIs */
2086 if (vport->fc_npr_cnt)
2087 lpfc_els_disc_plogi(vport);
2088
2089 if (!vport->num_disc_nodes) {
2090 spin_lock_irq(shost->host_lock);
2091 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2092 spin_unlock_irq(shost->host_lock);
2093 lpfc_can_disctmo(vport);
2094 }
2095 vport->port_state = LPFC_VPORT_READY;
2096
2097 out:
2098 mempool_free(pmb, phba->mbox_mem_pool);
2099 return;
2100 }
2101
2102 /**
2103 * lpfc_create_static_vport - Read HBA config region to create static vports.
2104 * @phba: pointer to lpfc hba data structure.
2105 *
2106 * This routine issue a DUMP mailbox command for config region 22 to get
2107 * the list of static vports to be created. The function create vports
2108 * based on the information returned from the HBA.
2109 **/
2110 void
2111 lpfc_create_static_vport(struct lpfc_hba *phba)
2112 {
2113 LPFC_MBOXQ_t *pmb = NULL;
2114 MAILBOX_t *mb;
2115 struct static_vport_info *vport_info;
2116 int rc, i;
2117 struct fc_vport_identifiers vport_id;
2118 struct fc_vport *new_fc_vport;
2119 struct Scsi_Host *shost;
2120 struct lpfc_vport *vport;
2121 uint16_t offset = 0;
2122 uint8_t *vport_buff;
2123
2124 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2125 if (!pmb) {
2126 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2127 "0542 lpfc_create_static_vport failed to"
2128 " allocate mailbox memory\n");
2129 return;
2130 }
2131
2132 mb = &pmb->u.mb;
2133
2134 vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
2135 if (!vport_info) {
2136 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2137 "0543 lpfc_create_static_vport failed to"
2138 " allocate vport_info\n");
2139 mempool_free(pmb, phba->mbox_mem_pool);
2140 return;
2141 }
2142
2143 vport_buff = (uint8_t *) vport_info;
2144 do {
2145 lpfc_dump_static_vport(phba, pmb, offset);
2146 pmb->vport = phba->pport;
2147 rc = lpfc_sli_issue_mbox_wait(phba, pmb, LPFC_MBOX_TMO);
2148
2149 if ((rc != MBX_SUCCESS) || mb->mbxStatus) {
2150 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2151 "0544 lpfc_create_static_vport failed to"
2152 " issue dump mailbox command ret 0x%x "
2153 "status 0x%x\n",
2154 rc, mb->mbxStatus);
2155 goto out;
2156 }
2157
2158 if (mb->un.varDmp.word_cnt >
2159 sizeof(struct static_vport_info) - offset)
2160 mb->un.varDmp.word_cnt =
2161 sizeof(struct static_vport_info) - offset;
2162
2163 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
2164 vport_buff + offset,
2165 mb->un.varDmp.word_cnt);
2166 offset += mb->un.varDmp.word_cnt;
2167
2168 } while (mb->un.varDmp.word_cnt &&
2169 offset < sizeof(struct static_vport_info));
2170
2171
2172 if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
2173 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
2174 != VPORT_INFO_REV)) {
2175 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2176 "0545 lpfc_create_static_vport bad"
2177 " information header 0x%x 0x%x\n",
2178 le32_to_cpu(vport_info->signature),
2179 le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK);
2180
2181 goto out;
2182 }
2183
2184 shost = lpfc_shost_from_vport(phba->pport);
2185
2186 for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
2187 memset(&vport_id, 0, sizeof(vport_id));
2188 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
2189 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
2190 if (!vport_id.port_name || !vport_id.node_name)
2191 continue;
2192
2193 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
2194 vport_id.vport_type = FC_PORTTYPE_NPIV;
2195 vport_id.disable = false;
2196 new_fc_vport = fc_vport_create(shost, 0, &vport_id);
2197
2198 if (!new_fc_vport) {
2199 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2200 "0546 lpfc_create_static_vport failed to"
2201 " create vport \n");
2202 continue;
2203 }
2204
2205 vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
2206 vport->vport_flag |= STATIC_VPORT;
2207 }
2208
2209 out:
2210 /*
2211 * If this is timed out command, setting NULL to context2 tell SLI
2212 * layer not to use this buffer.
2213 */
2214 spin_lock_irq(&phba->hbalock);
2215 pmb->context2 = NULL;
2216 spin_unlock_irq(&phba->hbalock);
2217 kfree(vport_info);
2218 if (rc != MBX_TIMEOUT)
2219 mempool_free(pmb, phba->mbox_mem_pool);
2220
2221 return;
2222 }
2223
2224 /*
2225 * This routine handles processing a Fabric REG_LOGIN mailbox
2226 * command upon completion. It is setup in the LPFC_MBOXQ
2227 * as the completion routine when the command is
2228 * handed off to the SLI layer.
2229 */
2230 void
2231 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2232 {
2233 struct lpfc_vport *vport = pmb->vport;
2234 MAILBOX_t *mb = &pmb->u.mb;
2235 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2236 struct lpfc_nodelist *ndlp;
2237
2238 ndlp = (struct lpfc_nodelist *) pmb->context2;
2239 pmb->context1 = NULL;
2240 pmb->context2 = NULL;
2241 if (mb->mbxStatus) {
2242 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2243 "0258 Register Fabric login error: 0x%x\n",
2244 mb->mbxStatus);
2245 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2246 kfree(mp);
2247 mempool_free(pmb, phba->mbox_mem_pool);
2248
2249 if (phba->fc_topology == TOPOLOGY_LOOP) {
2250 /* FLOGI failed, use loop map to make discovery list */
2251 lpfc_disc_list_loopmap(vport);
2252
2253 /* Start discovery */
2254 lpfc_disc_start(vport);
2255 /* Decrement the reference count to ndlp after the
2256 * reference to the ndlp are done.
2257 */
2258 lpfc_nlp_put(ndlp);
2259 return;
2260 }
2261
2262 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2263 /* Decrement the reference count to ndlp after the reference
2264 * to the ndlp are done.
2265 */
2266 lpfc_nlp_put(ndlp);
2267 return;
2268 }
2269
2270 ndlp->nlp_rpi = mb->un.varWords[0];
2271 ndlp->nlp_flag |= NLP_RPI_VALID;
2272 ndlp->nlp_type |= NLP_FABRIC;
2273 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2274
2275 if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
2276 lpfc_start_fdiscs(phba);
2277 lpfc_do_scr_ns_plogi(phba, vport);
2278 }
2279
2280 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2281 kfree(mp);
2282 mempool_free(pmb, phba->mbox_mem_pool);
2283
2284 /* Drop the reference count from the mbox at the end after
2285 * all the current reference to the ndlp have been done.
2286 */
2287 lpfc_nlp_put(ndlp);
2288 return;
2289 }
2290
2291 /*
2292 * This routine handles processing a NameServer REG_LOGIN mailbox
2293 * command upon completion. It is setup in the LPFC_MBOXQ
2294 * as the completion routine when the command is
2295 * handed off to the SLI layer.
2296 */
2297 void
2298 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2299 {
2300 MAILBOX_t *mb = &pmb->u.mb;
2301 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2302 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2303 struct lpfc_vport *vport = pmb->vport;
2304
2305 if (mb->mbxStatus) {
2306 out:
2307 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2308 "0260 Register NameServer error: 0x%x\n",
2309 mb->mbxStatus);
2310 /* decrement the node reference count held for this
2311 * callback function.
2312 */
2313 lpfc_nlp_put(ndlp);
2314 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2315 kfree(mp);
2316 mempool_free(pmb, phba->mbox_mem_pool);
2317
2318 /* If no other thread is using the ndlp, free it */
2319 lpfc_nlp_not_used(ndlp);
2320
2321 if (phba->fc_topology == TOPOLOGY_LOOP) {
2322 /*
2323 * RegLogin failed, use loop map to make discovery
2324 * list
2325 */
2326 lpfc_disc_list_loopmap(vport);
2327
2328 /* Start discovery */
2329 lpfc_disc_start(vport);
2330 return;
2331 }
2332 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2333 return;
2334 }
2335
2336 pmb->context1 = NULL;
2337
2338 ndlp->nlp_rpi = mb->un.varWords[0];
2339 ndlp->nlp_flag |= NLP_RPI_VALID;
2340 ndlp->nlp_type |= NLP_FABRIC;
2341 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2342
2343 if (vport->port_state < LPFC_VPORT_READY) {
2344 /* Link up discovery requires Fabric registration. */
2345 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
2346 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
2347 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
2348 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
2349 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
2350
2351 /* Issue SCR just before NameServer GID_FT Query */
2352 lpfc_issue_els_scr(vport, SCR_DID, 0);
2353 }
2354
2355 vport->fc_ns_retry = 0;
2356 /* Good status, issue CT Request to NameServer */
2357 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
2358 /* Cannot issue NameServer Query, so finish up discovery */
2359 goto out;
2360 }
2361
2362 /* decrement the node reference count held for this
2363 * callback function.
2364 */
2365 lpfc_nlp_put(ndlp);
2366 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2367 kfree(mp);
2368 mempool_free(pmb, phba->mbox_mem_pool);
2369
2370 return;
2371 }
2372
2373 static void
2374 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2375 {
2376 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2377 struct fc_rport *rport;
2378 struct lpfc_rport_data *rdata;
2379 struct fc_rport_identifiers rport_ids;
2380 struct lpfc_hba *phba = vport->phba;
2381
2382 /* Remote port has reappeared. Re-register w/ FC transport */
2383 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
2384 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
2385 rport_ids.port_id = ndlp->nlp_DID;
2386 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
2387
2388 /*
2389 * We leave our node pointer in rport->dd_data when we unregister a
2390 * FCP target port. But fc_remote_port_add zeros the space to which
2391 * rport->dd_data points. So, if we're reusing a previously
2392 * registered port, drop the reference that we took the last time we
2393 * registered the port.
2394 */
2395 if (ndlp->rport && ndlp->rport->dd_data &&
2396 ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
2397 lpfc_nlp_put(ndlp);
2398
2399 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
2400 "rport add: did:x%x flg:x%x type x%x",
2401 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
2402
2403 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
2404 if (!rport || !get_device(&rport->dev)) {
2405 dev_printk(KERN_WARNING, &phba->pcidev->dev,
2406 "Warning: fc_remote_port_add failed\n");
2407 return;
2408 }
2409
2410 /* initialize static port data */
2411 rport->maxframe_size = ndlp->nlp_maxframe;
2412 rport->supported_classes = ndlp->nlp_class_sup;
2413 rdata = rport->dd_data;
2414 rdata->pnode = lpfc_nlp_get(ndlp);
2415
2416 if (ndlp->nlp_type & NLP_FCP_TARGET)
2417 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
2418 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
2419 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
2420
2421
2422 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
2423 fc_remote_port_rolechg(rport, rport_ids.roles);
2424
2425 if ((rport->scsi_target_id != -1) &&
2426 (rport->scsi_target_id < LPFC_MAX_TARGET)) {
2427 ndlp->nlp_sid = rport->scsi_target_id;
2428 }
2429 return;
2430 }
2431
2432 static void
2433 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
2434 {
2435 struct fc_rport *rport = ndlp->rport;
2436
2437 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
2438 "rport delete: did:x%x flg:x%x type x%x",
2439 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
2440
2441 fc_remote_port_delete(rport);
2442
2443 return;
2444 }
2445
2446 static void
2447 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
2448 {
2449 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2450
2451 spin_lock_irq(shost->host_lock);
2452 switch (state) {
2453 case NLP_STE_UNUSED_NODE:
2454 vport->fc_unused_cnt += count;
2455 break;
2456 case NLP_STE_PLOGI_ISSUE:
2457 vport->fc_plogi_cnt += count;
2458 break;
2459 case NLP_STE_ADISC_ISSUE:
2460 vport->fc_adisc_cnt += count;
2461 break;
2462 case NLP_STE_REG_LOGIN_ISSUE:
2463 vport->fc_reglogin_cnt += count;
2464 break;
2465 case NLP_STE_PRLI_ISSUE:
2466 vport->fc_prli_cnt += count;
2467 break;
2468 case NLP_STE_UNMAPPED_NODE:
2469 vport->fc_unmap_cnt += count;
2470 break;
2471 case NLP_STE_MAPPED_NODE:
2472 vport->fc_map_cnt += count;
2473 break;
2474 case NLP_STE_NPR_NODE:
2475 vport->fc_npr_cnt += count;
2476 break;
2477 }
2478 spin_unlock_irq(shost->host_lock);
2479 }
2480
2481 static void
2482 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2483 int old_state, int new_state)
2484 {
2485 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2486
2487 if (new_state == NLP_STE_UNMAPPED_NODE) {
2488 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
2489 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
2490 ndlp->nlp_type |= NLP_FC_NODE;
2491 }
2492 if (new_state == NLP_STE_MAPPED_NODE)
2493 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
2494 if (new_state == NLP_STE_NPR_NODE)
2495 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
2496
2497 /* Transport interface */
2498 if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
2499 old_state == NLP_STE_UNMAPPED_NODE)) {
2500 vport->phba->nport_event_cnt++;
2501 lpfc_unregister_remote_port(ndlp);
2502 }
2503
2504 if (new_state == NLP_STE_MAPPED_NODE ||
2505 new_state == NLP_STE_UNMAPPED_NODE) {
2506 vport->phba->nport_event_cnt++;
2507 /*
2508 * Tell the fc transport about the port, if we haven't
2509 * already. If we have, and it's a scsi entity, be
2510 * sure to unblock any attached scsi devices
2511 */
2512 lpfc_register_remote_port(vport, ndlp);
2513 }
2514 if ((new_state == NLP_STE_MAPPED_NODE) &&
2515 (vport->stat_data_enabled)) {
2516 /*
2517 * A new target is discovered, if there is no buffer for
2518 * statistical data collection allocate buffer.
2519 */
2520 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
2521 sizeof(struct lpfc_scsicmd_bkt),
2522 GFP_KERNEL);
2523
2524 if (!ndlp->lat_data)
2525 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
2526 "0286 lpfc_nlp_state_cleanup failed to "
2527 "allocate statistical data buffer DID "
2528 "0x%x\n", ndlp->nlp_DID);
2529 }
2530 /*
2531 * if we added to Mapped list, but the remote port
2532 * registration failed or assigned a target id outside
2533 * our presentable range - move the node to the
2534 * Unmapped List
2535 */
2536 if (new_state == NLP_STE_MAPPED_NODE &&
2537 (!ndlp->rport ||
2538 ndlp->rport->scsi_target_id == -1 ||
2539 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
2540 spin_lock_irq(shost->host_lock);
2541 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
2542 spin_unlock_irq(shost->host_lock);
2543 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2544 }
2545 }
2546
2547 static char *
2548 lpfc_nlp_state_name(char *buffer, size_t size, int state)
2549 {
2550 static char *states[] = {
2551 [NLP_STE_UNUSED_NODE] = "UNUSED",
2552 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
2553 [NLP_STE_ADISC_ISSUE] = "ADISC",
2554 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
2555 [NLP_STE_PRLI_ISSUE] = "PRLI",
2556 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
2557 [NLP_STE_MAPPED_NODE] = "MAPPED",
2558 [NLP_STE_NPR_NODE] = "NPR",
2559 };
2560
2561 if (state < NLP_STE_MAX_STATE && states[state])
2562 strlcpy(buffer, states[state], size);
2563 else
2564 snprintf(buffer, size, "unknown (%d)", state);
2565 return buffer;
2566 }
2567
2568 void
2569 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2570 int state)
2571 {
2572 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2573 int old_state = ndlp->nlp_state;
2574 char name1[16], name2[16];
2575
2576 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2577 "0904 NPort state transition x%06x, %s -> %s\n",
2578 ndlp->nlp_DID,
2579 lpfc_nlp_state_name(name1, sizeof(name1), old_state),
2580 lpfc_nlp_state_name(name2, sizeof(name2), state));
2581
2582 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2583 "node statechg did:x%x old:%d ste:%d",
2584 ndlp->nlp_DID, old_state, state);
2585
2586 if (old_state == NLP_STE_NPR_NODE &&
2587 state != NLP_STE_NPR_NODE)
2588 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2589 if (old_state == NLP_STE_UNMAPPED_NODE) {
2590 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
2591 ndlp->nlp_type &= ~NLP_FC_NODE;
2592 }
2593
2594 if (list_empty(&ndlp->nlp_listp)) {
2595 spin_lock_irq(shost->host_lock);
2596 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
2597 spin_unlock_irq(shost->host_lock);
2598 } else if (old_state)
2599 lpfc_nlp_counters(vport, old_state, -1);
2600
2601 ndlp->nlp_state = state;
2602 lpfc_nlp_counters(vport, state, 1);
2603 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
2604 }
2605
2606 void
2607 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2608 {
2609 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2610
2611 if (list_empty(&ndlp->nlp_listp)) {
2612 spin_lock_irq(shost->host_lock);
2613 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
2614 spin_unlock_irq(shost->host_lock);
2615 }
2616 }
2617
2618 void
2619 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2620 {
2621 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2622
2623 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2624 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
2625 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
2626 spin_lock_irq(shost->host_lock);
2627 list_del_init(&ndlp->nlp_listp);
2628 spin_unlock_irq(shost->host_lock);
2629 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
2630 NLP_STE_UNUSED_NODE);
2631 }
2632
2633 static void
2634 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2635 {
2636 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2637 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
2638 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
2639 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
2640 NLP_STE_UNUSED_NODE);
2641 }
2642 /**
2643 * lpfc_initialize_node - Initialize all fields of node object
2644 * @vport: Pointer to Virtual Port object.
2645 * @ndlp: Pointer to FC node object.
2646 * @did: FC_ID of the node.
2647 *
2648 * This function is always called when node object need to be initialized.
2649 * It initializes all the fields of the node object. Although the reference
2650 * to phba from @ndlp can be obtained indirectly through it's reference to
2651 * @vport, a direct reference to phba is taken here by @ndlp. This is due
2652 * to the life-span of the @ndlp might go beyond the existence of @vport as
2653 * the final release of ndlp is determined by its reference count. And, the
2654 * operation on @ndlp needs the reference to phba.
2655 **/
2656 static inline void
2657 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2658 uint32_t did)
2659 {
2660 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
2661 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
2662 init_timer(&ndlp->nlp_delayfunc);
2663 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
2664 ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
2665 ndlp->nlp_DID = did;
2666 ndlp->vport = vport;
2667 ndlp->phba = vport->phba;
2668 ndlp->nlp_sid = NLP_NO_SID;
2669 kref_init(&ndlp->kref);
2670 NLP_INT_NODE_ACT(ndlp);
2671 atomic_set(&ndlp->cmd_pending, 0);
2672 ndlp->cmd_qdepth = LPFC_MAX_TGT_QDEPTH;
2673 }
2674
2675 struct lpfc_nodelist *
2676 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2677 int state)
2678 {
2679 struct lpfc_hba *phba = vport->phba;
2680 uint32_t did;
2681 unsigned long flags;
2682
2683 if (!ndlp)
2684 return NULL;
2685
2686 spin_lock_irqsave(&phba->ndlp_lock, flags);
2687 /* The ndlp should not be in memory free mode */
2688 if (NLP_CHK_FREE_REQ(ndlp)) {
2689 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
2690 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2691 "0277 lpfc_enable_node: ndlp:x%p "
2692 "usgmap:x%x refcnt:%d\n",
2693 (void *)ndlp, ndlp->nlp_usg_map,
2694 atomic_read(&ndlp->kref.refcount));
2695 return NULL;
2696 }
2697 /* The ndlp should not already be in active mode */
2698 if (NLP_CHK_NODE_ACT(ndlp)) {
2699 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
2700 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2701 "0278 lpfc_enable_node: ndlp:x%p "
2702 "usgmap:x%x refcnt:%d\n",
2703 (void *)ndlp, ndlp->nlp_usg_map,
2704 atomic_read(&ndlp->kref.refcount));
2705 return NULL;
2706 }
2707
2708 /* Keep the original DID */
2709 did = ndlp->nlp_DID;
2710
2711 /* re-initialize ndlp except of ndlp linked list pointer */
2712 memset((((char *)ndlp) + sizeof (struct list_head)), 0,
2713 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
2714 lpfc_initialize_node(vport, ndlp, did);
2715
2716 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
2717
2718 if (state != NLP_STE_UNUSED_NODE)
2719 lpfc_nlp_set_state(vport, ndlp, state);
2720
2721 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2722 "node enable: did:x%x",
2723 ndlp->nlp_DID, 0, 0);
2724 return ndlp;
2725 }
2726
2727 void
2728 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2729 {
2730 /*
2731 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
2732 * be used if we wish to issue the "last" lpfc_nlp_put() to remove
2733 * the ndlp from the vport. The ndlp marked as UNUSED on the list
2734 * until ALL other outstanding threads have completed. We check
2735 * that the ndlp not already in the UNUSED state before we proceed.
2736 */
2737 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
2738 return;
2739 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
2740 lpfc_nlp_put(ndlp);
2741 return;
2742 }
2743
2744 /*
2745 * Start / ReStart rescue timer for Discovery / RSCN handling
2746 */
2747 void
2748 lpfc_set_disctmo(struct lpfc_vport *vport)
2749 {
2750 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2751 struct lpfc_hba *phba = vport->phba;
2752 uint32_t tmo;
2753
2754 if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
2755 /* For FAN, timeout should be greater than edtov */
2756 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
2757 } else {
2758 /* Normal discovery timeout should be > than ELS/CT timeout
2759 * FC spec states we need 3 * ratov for CT requests
2760 */
2761 tmo = ((phba->fc_ratov * 3) + 3);
2762 }
2763
2764
2765 if (!timer_pending(&vport->fc_disctmo)) {
2766 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2767 "set disc timer: tmo:x%x state:x%x flg:x%x",
2768 tmo, vport->port_state, vport->fc_flag);
2769 }
2770
2771 mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
2772 spin_lock_irq(shost->host_lock);
2773 vport->fc_flag |= FC_DISC_TMO;
2774 spin_unlock_irq(shost->host_lock);
2775
2776 /* Start Discovery Timer state <hba_state> */
2777 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2778 "0247 Start Discovery Timer state x%x "
2779 "Data: x%x x%lx x%x x%x\n",
2780 vport->port_state, tmo,
2781 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
2782 vport->fc_adisc_cnt);
2783
2784 return;
2785 }
2786
2787 /*
2788 * Cancel rescue timer for Discovery / RSCN handling
2789 */
2790 int
2791 lpfc_can_disctmo(struct lpfc_vport *vport)
2792 {
2793 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2794 unsigned long iflags;
2795
2796 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2797 "can disc timer: state:x%x rtry:x%x flg:x%x",
2798 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
2799
2800 /* Turn off discovery timer if its running */
2801 if (vport->fc_flag & FC_DISC_TMO) {
2802 spin_lock_irqsave(shost->host_lock, iflags);
2803 vport->fc_flag &= ~FC_DISC_TMO;
2804 spin_unlock_irqrestore(shost->host_lock, iflags);
2805 del_timer_sync(&vport->fc_disctmo);
2806 spin_lock_irqsave(&vport->work_port_lock, iflags);
2807 vport->work_port_events &= ~WORKER_DISC_TMO;
2808 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
2809 }
2810
2811 /* Cancel Discovery Timer state <hba_state> */
2812 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2813 "0248 Cancel Discovery Timer state x%x "
2814 "Data: x%x x%x x%x\n",
2815 vport->port_state, vport->fc_flag,
2816 vport->fc_plogi_cnt, vport->fc_adisc_cnt);
2817 return 0;
2818 }
2819
2820 /*
2821 * Check specified ring for outstanding IOCB on the SLI queue
2822 * Return true if iocb matches the specified nport
2823 */
2824 int
2825 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
2826 struct lpfc_sli_ring *pring,
2827 struct lpfc_iocbq *iocb,
2828 struct lpfc_nodelist *ndlp)
2829 {
2830 struct lpfc_sli *psli = &phba->sli;
2831 IOCB_t *icmd = &iocb->iocb;
2832 struct lpfc_vport *vport = ndlp->vport;
2833
2834 if (iocb->vport != vport)
2835 return 0;
2836
2837 if (pring->ringno == LPFC_ELS_RING) {
2838 switch (icmd->ulpCommand) {
2839 case CMD_GEN_REQUEST64_CR:
2840 if (iocb->context_un.ndlp == ndlp)
2841 return 1;
2842 case CMD_ELS_REQUEST64_CR:
2843 if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
2844 return 1;
2845 case CMD_XMIT_ELS_RSP64_CX:
2846 if (iocb->context1 == (uint8_t *) ndlp)
2847 return 1;
2848 }
2849 } else if (pring->ringno == psli->extra_ring) {
2850
2851 } else if (pring->ringno == psli->fcp_ring) {
2852 /* Skip match check if waiting to relogin to FCP target */
2853 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
2854 (ndlp->nlp_flag & NLP_DELAY_TMO)) {
2855 return 0;
2856 }
2857 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
2858 return 1;
2859 }
2860 } else if (pring->ringno == psli->next_ring) {
2861
2862 }
2863 return 0;
2864 }
2865
2866 /*
2867 * Free resources / clean up outstanding I/Os
2868 * associated with nlp_rpi in the LPFC_NODELIST entry.
2869 */
2870 static int
2871 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
2872 {
2873 LIST_HEAD(completions);
2874 struct lpfc_sli *psli;
2875 struct lpfc_sli_ring *pring;
2876 struct lpfc_iocbq *iocb, *next_iocb;
2877 uint32_t rpi, i;
2878
2879 lpfc_fabric_abort_nport(ndlp);
2880
2881 /*
2882 * Everything that matches on txcmplq will be returned
2883 * by firmware with a no rpi error.
2884 */
2885 psli = &phba->sli;
2886 rpi = ndlp->nlp_rpi;
2887 if (ndlp->nlp_flag & NLP_RPI_VALID) {
2888 /* Now process each ring */
2889 for (i = 0; i < psli->num_rings; i++) {
2890 pring = &psli->ring[i];
2891
2892 spin_lock_irq(&phba->hbalock);
2893 list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
2894 list) {
2895 /*
2896 * Check to see if iocb matches the nport we are
2897 * looking for
2898 */
2899 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
2900 ndlp))) {
2901 /* It matches, so deque and call compl
2902 with an error */
2903 list_move_tail(&iocb->list,
2904 &completions);
2905 pring->txq_cnt--;
2906 }
2907 }
2908 spin_unlock_irq(&phba->hbalock);
2909 }
2910 }
2911
2912 /* Cancel all the IOCBs from the completions list */
2913 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
2914 IOERR_SLI_ABORTED);
2915
2916 return 0;
2917 }
2918
2919 /*
2920 * Free rpi associated with LPFC_NODELIST entry.
2921 * This routine is called from lpfc_freenode(), when we are removing
2922 * a LPFC_NODELIST entry. It is also called if the driver initiates a
2923 * LOGO that completes successfully, and we are waiting to PLOGI back
2924 * to the remote NPort. In addition, it is called after we receive
2925 * and unsolicated ELS cmd, send back a rsp, the rsp completes and
2926 * we are waiting to PLOGI back to the remote NPort.
2927 */
2928 int
2929 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2930 {
2931 struct lpfc_hba *phba = vport->phba;
2932 LPFC_MBOXQ_t *mbox;
2933 int rc;
2934
2935 if (ndlp->nlp_flag & NLP_RPI_VALID) {
2936 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2937 if (mbox) {
2938 lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
2939 mbox->vport = vport;
2940 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2941 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2942 if (rc == MBX_NOT_FINISHED)
2943 mempool_free(mbox, phba->mbox_mem_pool);
2944 }
2945 lpfc_no_rpi(phba, ndlp);
2946 ndlp->nlp_rpi = 0;
2947 ndlp->nlp_flag &= ~NLP_RPI_VALID;
2948 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2949 return 1;
2950 }
2951 return 0;
2952 }
2953
2954 void
2955 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
2956 {
2957 struct lpfc_hba *phba = vport->phba;
2958 LPFC_MBOXQ_t *mbox;
2959 int rc;
2960
2961 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2962 if (mbox) {
2963 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
2964 mbox->vport = vport;
2965 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2966 mbox->context1 = NULL;
2967 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2968 if (rc != MBX_TIMEOUT)
2969 mempool_free(mbox, phba->mbox_mem_pool);
2970
2971 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
2972 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
2973 "1836 Could not issue "
2974 "unreg_login(all_rpis) status %d\n", rc);
2975 }
2976 }
2977
2978 void
2979 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
2980 {
2981 struct lpfc_hba *phba = vport->phba;
2982 LPFC_MBOXQ_t *mbox;
2983 int rc;
2984
2985 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2986 if (mbox) {
2987 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
2988 mbox->vport = vport;
2989 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2990 mbox->context1 = NULL;
2991 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2992 if (rc != MBX_TIMEOUT)
2993 mempool_free(mbox, phba->mbox_mem_pool);
2994
2995 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
2996 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
2997 "1815 Could not issue "
2998 "unreg_did (default rpis) status %d\n",
2999 rc);
3000 }
3001 }
3002
3003 /*
3004 * Free resources associated with LPFC_NODELIST entry
3005 * so it can be freed.
3006 */
3007 static int
3008 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3009 {
3010 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3011 struct lpfc_hba *phba = vport->phba;
3012 LPFC_MBOXQ_t *mb, *nextmb;
3013 struct lpfc_dmabuf *mp;
3014
3015 /* Cleanup node for NPort <nlp_DID> */
3016 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3017 "0900 Cleanup node for NPort x%x "
3018 "Data: x%x x%x x%x\n",
3019 ndlp->nlp_DID, ndlp->nlp_flag,
3020 ndlp->nlp_state, ndlp->nlp_rpi);
3021 if (NLP_CHK_FREE_REQ(ndlp)) {
3022 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3023 "0280 lpfc_cleanup_node: ndlp:x%p "
3024 "usgmap:x%x refcnt:%d\n",
3025 (void *)ndlp, ndlp->nlp_usg_map,
3026 atomic_read(&ndlp->kref.refcount));
3027 lpfc_dequeue_node(vport, ndlp);
3028 } else {
3029 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3030 "0281 lpfc_cleanup_node: ndlp:x%p "
3031 "usgmap:x%x refcnt:%d\n",
3032 (void *)ndlp, ndlp->nlp_usg_map,
3033 atomic_read(&ndlp->kref.refcount));
3034 lpfc_disable_node(vport, ndlp);
3035 }
3036
3037 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
3038 if ((mb = phba->sli.mbox_active)) {
3039 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
3040 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
3041 mb->context2 = NULL;
3042 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3043 }
3044 }
3045
3046 spin_lock_irq(&phba->hbalock);
3047 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
3048 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
3049 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
3050 mp = (struct lpfc_dmabuf *) (mb->context1);
3051 if (mp) {
3052 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
3053 kfree(mp);
3054 }
3055 list_del(&mb->list);
3056 mempool_free(mb, phba->mbox_mem_pool);
3057 /* We shall not invoke the lpfc_nlp_put to decrement
3058 * the ndlp reference count as we are in the process
3059 * of lpfc_nlp_release.
3060 */
3061 }
3062 }
3063 spin_unlock_irq(&phba->hbalock);
3064
3065 lpfc_els_abort(phba, ndlp);
3066
3067 spin_lock_irq(shost->host_lock);
3068 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
3069 spin_unlock_irq(shost->host_lock);
3070
3071 ndlp->nlp_last_elscmd = 0;
3072 del_timer_sync(&ndlp->nlp_delayfunc);
3073
3074 list_del_init(&ndlp->els_retry_evt.evt_listp);
3075 list_del_init(&ndlp->dev_loss_evt.evt_listp);
3076
3077 lpfc_unreg_rpi(vport, ndlp);
3078
3079 return 0;
3080 }
3081
3082 /*
3083 * Check to see if we can free the nlp back to the freelist.
3084 * If we are in the middle of using the nlp in the discovery state
3085 * machine, defer the free till we reach the end of the state machine.
3086 */
3087 static void
3088 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3089 {
3090 struct lpfc_hba *phba = vport->phba;
3091 struct lpfc_rport_data *rdata;
3092 LPFC_MBOXQ_t *mbox;
3093 int rc;
3094
3095 lpfc_cancel_retry_delay_tmo(vport, ndlp);
3096 if ((ndlp->nlp_flag & NLP_DEFER_RM) &&
3097 !(ndlp->nlp_flag & NLP_RPI_VALID)) {
3098 /* For this case we need to cleanup the default rpi
3099 * allocated by the firmware.
3100 */
3101 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
3102 != NULL) {
3103 rc = lpfc_reg_rpi(phba, vport->vpi, ndlp->nlp_DID,
3104 (uint8_t *) &vport->fc_sparam, mbox, 0);
3105 if (rc) {
3106 mempool_free(mbox, phba->mbox_mem_pool);
3107 }
3108 else {
3109 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
3110 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
3111 mbox->vport = vport;
3112 mbox->context2 = NULL;
3113 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3114 if (rc == MBX_NOT_FINISHED) {
3115 mempool_free(mbox, phba->mbox_mem_pool);
3116 }
3117 }
3118 }
3119 }
3120 lpfc_cleanup_node(vport, ndlp);
3121
3122 /*
3123 * We can get here with a non-NULL ndlp->rport because when we
3124 * unregister a rport we don't break the rport/node linkage. So if we
3125 * do, make sure we don't leaving any dangling pointers behind.
3126 */
3127 if (ndlp->rport) {
3128 rdata = ndlp->rport->dd_data;
3129 rdata->pnode = NULL;
3130 ndlp->rport = NULL;
3131 }
3132 }
3133
3134 static int
3135 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3136 uint32_t did)
3137 {
3138 D_ID mydid, ndlpdid, matchdid;
3139
3140 if (did == Bcast_DID)
3141 return 0;
3142
3143 /* First check for Direct match */
3144 if (ndlp->nlp_DID == did)
3145 return 1;
3146
3147 /* Next check for area/domain identically equals 0 match */
3148 mydid.un.word = vport->fc_myDID;
3149 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
3150 return 0;
3151 }
3152
3153 matchdid.un.word = did;
3154 ndlpdid.un.word = ndlp->nlp_DID;
3155 if (matchdid.un.b.id == ndlpdid.un.b.id) {
3156 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
3157 (mydid.un.b.area == matchdid.un.b.area)) {
3158 if ((ndlpdid.un.b.domain == 0) &&
3159 (ndlpdid.un.b.area == 0)) {
3160 if (ndlpdid.un.b.id)
3161 return 1;
3162 }
3163 return 0;
3164 }
3165
3166 matchdid.un.word = ndlp->nlp_DID;
3167 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
3168 (mydid.un.b.area == ndlpdid.un.b.area)) {
3169 if ((matchdid.un.b.domain == 0) &&
3170 (matchdid.un.b.area == 0)) {
3171 if (matchdid.un.b.id)
3172 return 1;
3173 }
3174 }
3175 }
3176 return 0;
3177 }
3178
3179 /* Search for a nodelist entry */
3180 static struct lpfc_nodelist *
3181 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
3182 {
3183 struct lpfc_nodelist *ndlp;
3184 uint32_t data1;
3185
3186 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
3187 if (lpfc_matchdid(vport, ndlp, did)) {
3188 data1 = (((uint32_t) ndlp->nlp_state << 24) |
3189 ((uint32_t) ndlp->nlp_xri << 16) |
3190 ((uint32_t) ndlp->nlp_type << 8) |
3191 ((uint32_t) ndlp->nlp_rpi & 0xff));
3192 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3193 "0929 FIND node DID "
3194 "Data: x%p x%x x%x x%x\n",
3195 ndlp, ndlp->nlp_DID,
3196 ndlp->nlp_flag, data1);
3197 return ndlp;
3198 }
3199 }
3200
3201 /* FIND node did <did> NOT FOUND */
3202 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3203 "0932 FIND node did x%x NOT FOUND.\n", did);
3204 return NULL;
3205 }
3206
3207 struct lpfc_nodelist *
3208 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
3209 {
3210 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3211 struct lpfc_nodelist *ndlp;
3212
3213 spin_lock_irq(shost->host_lock);
3214 ndlp = __lpfc_findnode_did(vport, did);
3215 spin_unlock_irq(shost->host_lock);
3216 return ndlp;
3217 }
3218
3219 struct lpfc_nodelist *
3220 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
3221 {
3222 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3223 struct lpfc_nodelist *ndlp;
3224
3225 ndlp = lpfc_findnode_did(vport, did);
3226 if (!ndlp) {
3227 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
3228 lpfc_rscn_payload_check(vport, did) == 0)
3229 return NULL;
3230 ndlp = (struct lpfc_nodelist *)
3231 mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
3232 if (!ndlp)
3233 return NULL;
3234 lpfc_nlp_init(vport, ndlp, did);
3235 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
3236 spin_lock_irq(shost->host_lock);
3237 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
3238 spin_unlock_irq(shost->host_lock);
3239 return ndlp;
3240 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
3241 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
3242 if (!ndlp)
3243 return NULL;
3244 spin_lock_irq(shost->host_lock);
3245 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
3246 spin_unlock_irq(shost->host_lock);
3247 return ndlp;
3248 }
3249
3250 if ((vport->fc_flag & FC_RSCN_MODE) &&
3251 !(vport->fc_flag & FC_NDISC_ACTIVE)) {
3252 if (lpfc_rscn_payload_check(vport, did)) {
3253 /* If we've already recieved a PLOGI from this NPort
3254 * we don't need to try to discover it again.
3255 */
3256 if (ndlp->nlp_flag & NLP_RCV_PLOGI)
3257 return NULL;
3258
3259 /* Since this node is marked for discovery,
3260 * delay timeout is not needed.
3261 */
3262 lpfc_cancel_retry_delay_tmo(vport, ndlp);
3263 spin_lock_irq(shost->host_lock);
3264 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
3265 spin_unlock_irq(shost->host_lock);
3266 } else
3267 ndlp = NULL;
3268 } else {
3269 /* If we've already recieved a PLOGI from this NPort,
3270 * or we are already in the process of discovery on it,
3271 * we don't need to try to discover it again.
3272 */
3273 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
3274 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
3275 ndlp->nlp_flag & NLP_RCV_PLOGI)
3276 return NULL;
3277 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
3278 spin_lock_irq(shost->host_lock);
3279 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
3280 spin_unlock_irq(shost->host_lock);
3281 }
3282 return ndlp;
3283 }
3284
3285 /* Build a list of nodes to discover based on the loopmap */
3286 void
3287 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
3288 {
3289 struct lpfc_hba *phba = vport->phba;
3290 int j;
3291 uint32_t alpa, index;
3292
3293 if (!lpfc_is_link_up(phba))
3294 return;
3295
3296 if (phba->fc_topology != TOPOLOGY_LOOP)
3297 return;
3298
3299 /* Check for loop map present or not */
3300 if (phba->alpa_map[0]) {
3301 for (j = 1; j <= phba->alpa_map[0]; j++) {
3302 alpa = phba->alpa_map[j];
3303 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
3304 continue;
3305 lpfc_setup_disc_node(vport, alpa);
3306 }
3307 } else {
3308 /* No alpamap, so try all alpa's */
3309 for (j = 0; j < FC_MAXLOOP; j++) {
3310 /* If cfg_scan_down is set, start from highest
3311 * ALPA (0xef) to lowest (0x1).
3312 */
3313 if (vport->cfg_scan_down)
3314 index = j;
3315 else
3316 index = FC_MAXLOOP - j - 1;
3317 alpa = lpfcAlpaArray[index];
3318 if ((vport->fc_myDID & 0xff) == alpa)
3319 continue;
3320 lpfc_setup_disc_node(vport, alpa);
3321 }
3322 }
3323 return;
3324 }
3325
3326 void
3327 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
3328 {
3329 LPFC_MBOXQ_t *mbox;
3330 struct lpfc_sli *psli = &phba->sli;
3331 struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
3332 struct lpfc_sli_ring *fcp_ring = &psli->ring[psli->fcp_ring];
3333 struct lpfc_sli_ring *next_ring = &psli->ring[psli->next_ring];
3334 int rc;
3335
3336 /*
3337 * if it's not a physical port or if we already send
3338 * clear_la then don't send it.
3339 */
3340 if ((phba->link_state >= LPFC_CLEAR_LA) ||
3341 (vport->port_type != LPFC_PHYSICAL_PORT) ||
3342 (phba->sli_rev == LPFC_SLI_REV4))
3343 return;
3344
3345 /* Link up discovery */
3346 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
3347 phba->link_state = LPFC_CLEAR_LA;
3348 lpfc_clear_la(phba, mbox);
3349 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
3350 mbox->vport = vport;
3351 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3352 if (rc == MBX_NOT_FINISHED) {
3353 mempool_free(mbox, phba->mbox_mem_pool);
3354 lpfc_disc_flush_list(vport);
3355 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
3356 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
3357 next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
3358 phba->link_state = LPFC_HBA_ERROR;
3359 }
3360 }
3361 }
3362
3363 /* Reg_vpi to tell firmware to resume normal operations */
3364 void
3365 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
3366 {
3367 LPFC_MBOXQ_t *regvpimbox;
3368
3369 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3370 if (regvpimbox) {
3371 lpfc_reg_vpi(vport, regvpimbox);
3372 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
3373 regvpimbox->vport = vport;
3374 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
3375 == MBX_NOT_FINISHED) {
3376 mempool_free(regvpimbox, phba->mbox_mem_pool);
3377 }
3378 }
3379 }
3380
3381 /* Start Link up / RSCN discovery on NPR nodes */
3382 void
3383 lpfc_disc_start(struct lpfc_vport *vport)
3384 {
3385 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3386 struct lpfc_hba *phba = vport->phba;
3387 uint32_t num_sent;
3388 uint32_t clear_la_pending;
3389 int did_changed;
3390
3391 if (!lpfc_is_link_up(phba))
3392 return;
3393
3394 if (phba->link_state == LPFC_CLEAR_LA)
3395 clear_la_pending = 1;
3396 else
3397 clear_la_pending = 0;
3398
3399 if (vport->port_state < LPFC_VPORT_READY)
3400 vport->port_state = LPFC_DISC_AUTH;
3401
3402 lpfc_set_disctmo(vport);
3403
3404 if (vport->fc_prevDID == vport->fc_myDID)
3405 did_changed = 0;
3406 else
3407 did_changed = 1;
3408
3409 vport->fc_prevDID = vport->fc_myDID;
3410 vport->num_disc_nodes = 0;
3411
3412 /* Start Discovery state <hba_state> */
3413 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3414 "0202 Start Discovery hba state x%x "
3415 "Data: x%x x%x x%x\n",
3416 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
3417 vport->fc_adisc_cnt);
3418
3419 /* First do ADISCs - if any */
3420 num_sent = lpfc_els_disc_adisc(vport);
3421
3422 if (num_sent)
3423 return;
3424
3425 /*
3426 * For SLI3, cmpl_reg_vpi will set port_state to READY, and
3427 * continue discovery.
3428 */
3429 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
3430 !(vport->fc_flag & FC_PT2PT) &&
3431 !(vport->fc_flag & FC_RSCN_MODE) &&
3432 (phba->sli_rev < LPFC_SLI_REV4)) {
3433 lpfc_issue_reg_vpi(phba, vport);
3434 return;
3435 }
3436
3437 /*
3438 * For SLI2, we need to set port_state to READY and continue
3439 * discovery.
3440 */
3441 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
3442 /* If we get here, there is nothing to ADISC */
3443 if (vport->port_type == LPFC_PHYSICAL_PORT)
3444 lpfc_issue_clear_la(phba, vport);
3445
3446 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
3447 vport->num_disc_nodes = 0;
3448 /* go thru NPR nodes and issue ELS PLOGIs */
3449 if (vport->fc_npr_cnt)
3450 lpfc_els_disc_plogi(vport);
3451
3452 if (!vport->num_disc_nodes) {
3453 spin_lock_irq(shost->host_lock);
3454 vport->fc_flag &= ~FC_NDISC_ACTIVE;
3455 spin_unlock_irq(shost->host_lock);
3456 lpfc_can_disctmo(vport);
3457 }
3458 }
3459 vport->port_state = LPFC_VPORT_READY;
3460 } else {
3461 /* Next do PLOGIs - if any */
3462 num_sent = lpfc_els_disc_plogi(vport);
3463
3464 if (num_sent)
3465 return;
3466
3467 if (vport->fc_flag & FC_RSCN_MODE) {
3468 /* Check to see if more RSCNs came in while we
3469 * were processing this one.
3470 */
3471 if ((vport->fc_rscn_id_cnt == 0) &&
3472 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
3473 spin_lock_irq(shost->host_lock);
3474 vport->fc_flag &= ~FC_RSCN_MODE;
3475 spin_unlock_irq(shost->host_lock);
3476 lpfc_can_disctmo(vport);
3477 } else
3478 lpfc_els_handle_rscn(vport);
3479 }
3480 }
3481 return;
3482 }
3483
3484 /*
3485 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS
3486 * ring the match the sppecified nodelist.
3487 */
3488 static void
3489 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
3490 {
3491 LIST_HEAD(completions);
3492 struct lpfc_sli *psli;
3493 IOCB_t *icmd;
3494 struct lpfc_iocbq *iocb, *next_iocb;
3495 struct lpfc_sli_ring *pring;
3496
3497 psli = &phba->sli;
3498 pring = &psli->ring[LPFC_ELS_RING];
3499
3500 /* Error matching iocb on txq or txcmplq
3501 * First check the txq.
3502 */
3503 spin_lock_irq(&phba->hbalock);
3504 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
3505 if (iocb->context1 != ndlp) {
3506 continue;
3507 }
3508 icmd = &iocb->iocb;
3509 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
3510 (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
3511
3512 list_move_tail(&iocb->list, &completions);
3513 pring->txq_cnt--;
3514 }
3515 }
3516
3517 /* Next check the txcmplq */
3518 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
3519 if (iocb->context1 != ndlp) {
3520 continue;
3521 }
3522 icmd = &iocb->iocb;
3523 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
3524 icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
3525 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
3526 }
3527 }
3528 spin_unlock_irq(&phba->hbalock);
3529
3530 /* Cancel all the IOCBs from the completions list */
3531 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
3532 IOERR_SLI_ABORTED);
3533 }
3534
3535 static void
3536 lpfc_disc_flush_list(struct lpfc_vport *vport)
3537 {
3538 struct lpfc_nodelist *ndlp, *next_ndlp;
3539 struct lpfc_hba *phba = vport->phba;
3540
3541 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
3542 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
3543 nlp_listp) {
3544 if (!NLP_CHK_NODE_ACT(ndlp))
3545 continue;
3546 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
3547 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
3548 lpfc_free_tx(phba, ndlp);
3549 }
3550 }
3551 }
3552 }
3553
3554 void
3555 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
3556 {
3557 lpfc_els_flush_rscn(vport);
3558 lpfc_els_flush_cmd(vport);
3559 lpfc_disc_flush_list(vport);
3560 }
3561
3562 /*****************************************************************************/
3563 /*
3564 * NAME: lpfc_disc_timeout
3565 *
3566 * FUNCTION: Fibre Channel driver discovery timeout routine.
3567 *
3568 * EXECUTION ENVIRONMENT: interrupt only
3569 *
3570 * CALLED FROM:
3571 * Timer function
3572 *
3573 * RETURNS:
3574 * none
3575 */
3576 /*****************************************************************************/
3577 void
3578 lpfc_disc_timeout(unsigned long ptr)
3579 {
3580 struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
3581 struct lpfc_hba *phba = vport->phba;
3582 uint32_t tmo_posted;
3583 unsigned long flags = 0;
3584
3585 if (unlikely(!phba))
3586 return;
3587
3588 spin_lock_irqsave(&vport->work_port_lock, flags);
3589 tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
3590 if (!tmo_posted)
3591 vport->work_port_events |= WORKER_DISC_TMO;
3592 spin_unlock_irqrestore(&vport->work_port_lock, flags);
3593
3594 if (!tmo_posted)
3595 lpfc_worker_wake_up(phba);
3596 return;
3597 }
3598
3599 static void
3600 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
3601 {
3602 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3603 struct lpfc_hba *phba = vport->phba;
3604 struct lpfc_sli *psli = &phba->sli;
3605 struct lpfc_nodelist *ndlp, *next_ndlp;
3606 LPFC_MBOXQ_t *initlinkmbox;
3607 int rc, clrlaerr = 0;
3608
3609 if (!(vport->fc_flag & FC_DISC_TMO))
3610 return;
3611
3612 spin_lock_irq(shost->host_lock);
3613 vport->fc_flag &= ~FC_DISC_TMO;
3614 spin_unlock_irq(shost->host_lock);
3615
3616 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3617 "disc timeout: state:x%x rtry:x%x flg:x%x",
3618 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
3619
3620 switch (vport->port_state) {
3621
3622 case LPFC_LOCAL_CFG_LINK:
3623 /* port_state is identically LPFC_LOCAL_CFG_LINK while waiting for
3624 * FAN
3625 */
3626 /* FAN timeout */
3627 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
3628 "0221 FAN timeout\n");
3629 /* Start discovery by sending FLOGI, clean up old rpis */
3630 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
3631 nlp_listp) {
3632 if (!NLP_CHK_NODE_ACT(ndlp))
3633 continue;
3634 if (ndlp->nlp_state != NLP_STE_NPR_NODE)
3635 continue;
3636 if (ndlp->nlp_type & NLP_FABRIC) {
3637 /* Clean up the ndlp on Fabric connections */
3638 lpfc_drop_node(vport, ndlp);
3639
3640 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
3641 /* Fail outstanding IO now since device
3642 * is marked for PLOGI.
3643 */
3644 lpfc_unreg_rpi(vport, ndlp);
3645 }
3646 }
3647 if (vport->port_state != LPFC_FLOGI) {
3648 lpfc_initial_flogi(vport);
3649 return;
3650 }
3651 break;
3652
3653 case LPFC_FDISC:
3654 case LPFC_FLOGI:
3655 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
3656 /* Initial FLOGI timeout */
3657 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3658 "0222 Initial %s timeout\n",
3659 vport->vpi ? "FDISC" : "FLOGI");
3660
3661 /* Assume no Fabric and go on with discovery.
3662 * Check for outstanding ELS FLOGI to abort.
3663 */
3664
3665 /* FLOGI failed, so just use loop map to make discovery list */
3666 lpfc_disc_list_loopmap(vport);
3667
3668 /* Start discovery */
3669 lpfc_disc_start(vport);
3670 break;
3671
3672 case LPFC_FABRIC_CFG_LINK:
3673 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
3674 NameServer login */
3675 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3676 "0223 Timeout while waiting for "
3677 "NameServer login\n");
3678 /* Next look for NameServer ndlp */
3679 ndlp = lpfc_findnode_did(vport, NameServer_DID);
3680 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
3681 lpfc_els_abort(phba, ndlp);
3682
3683 /* ReStart discovery */
3684 goto restart_disc;
3685
3686 case LPFC_NS_QRY:
3687 /* Check for wait for NameServer Rsp timeout */
3688 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3689 "0224 NameServer Query timeout "
3690 "Data: x%x x%x\n",
3691 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
3692
3693 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
3694 /* Try it one more time */
3695 vport->fc_ns_retry++;
3696 rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
3697 vport->fc_ns_retry, 0);
3698 if (rc == 0)
3699 break;
3700 }
3701 vport->fc_ns_retry = 0;
3702
3703 restart_disc:
3704 /*
3705 * Discovery is over.
3706 * set port_state to PORT_READY if SLI2.
3707 * cmpl_reg_vpi will set port_state to READY for SLI3.
3708 */
3709 if (phba->sli_rev < LPFC_SLI_REV4) {
3710 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
3711 lpfc_issue_reg_vpi(phba, vport);
3712 else { /* NPIV Not enabled */
3713 lpfc_issue_clear_la(phba, vport);
3714 vport->port_state = LPFC_VPORT_READY;
3715 }
3716 }
3717
3718 /* Setup and issue mailbox INITIALIZE LINK command */
3719 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3720 if (!initlinkmbox) {
3721 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3722 "0206 Device Discovery "
3723 "completion error\n");
3724 phba->link_state = LPFC_HBA_ERROR;
3725 break;
3726 }
3727
3728 lpfc_linkdown(phba);
3729 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
3730 phba->cfg_link_speed);
3731 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
3732 initlinkmbox->vport = vport;
3733 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3734 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
3735 lpfc_set_loopback_flag(phba);
3736 if (rc == MBX_NOT_FINISHED)
3737 mempool_free(initlinkmbox, phba->mbox_mem_pool);
3738
3739 break;
3740
3741 case LPFC_DISC_AUTH:
3742 /* Node Authentication timeout */
3743 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3744 "0227 Node Authentication timeout\n");
3745 lpfc_disc_flush_list(vport);
3746
3747 /*
3748 * set port_state to PORT_READY if SLI2.
3749 * cmpl_reg_vpi will set port_state to READY for SLI3.
3750 */
3751 if (phba->sli_rev < LPFC_SLI_REV4) {
3752 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
3753 lpfc_issue_reg_vpi(phba, vport);
3754 else { /* NPIV Not enabled */
3755 lpfc_issue_clear_la(phba, vport);
3756 vport->port_state = LPFC_VPORT_READY;
3757 }
3758 }
3759 break;
3760
3761 case LPFC_VPORT_READY:
3762 if (vport->fc_flag & FC_RSCN_MODE) {
3763 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3764 "0231 RSCN timeout Data: x%x "
3765 "x%x\n",
3766 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
3767
3768 /* Cleanup any outstanding ELS commands */
3769 lpfc_els_flush_cmd(vport);
3770
3771 lpfc_els_flush_rscn(vport);
3772 lpfc_disc_flush_list(vport);
3773 }
3774 break;
3775
3776 default:
3777 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3778 "0273 Unexpected discovery timeout, "
3779 "vport State x%x\n", vport->port_state);
3780 break;
3781 }
3782
3783 switch (phba->link_state) {
3784 case LPFC_CLEAR_LA:
3785 /* CLEAR LA timeout */
3786 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3787 "0228 CLEAR LA timeout\n");
3788 clrlaerr = 1;
3789 break;
3790
3791 case LPFC_LINK_UP:
3792 lpfc_issue_clear_la(phba, vport);
3793 /* Drop thru */
3794 case LPFC_LINK_UNKNOWN:
3795 case LPFC_WARM_START:
3796 case LPFC_INIT_START:
3797 case LPFC_INIT_MBX_CMDS:
3798 case LPFC_LINK_DOWN:
3799 case LPFC_HBA_ERROR:
3800 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
3801 "0230 Unexpected timeout, hba link "
3802 "state x%x\n", phba->link_state);
3803 clrlaerr = 1;
3804 break;
3805
3806 case LPFC_HBA_READY:
3807 break;
3808 }
3809
3810 if (clrlaerr) {
3811 lpfc_disc_flush_list(vport);
3812 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
3813 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
3814 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
3815 vport->port_state = LPFC_VPORT_READY;
3816 }
3817
3818 return;
3819 }
3820
3821 /*
3822 * This routine handles processing a NameServer REG_LOGIN mailbox
3823 * command upon completion. It is setup in the LPFC_MBOXQ
3824 * as the completion routine when the command is
3825 * handed off to the SLI layer.
3826 */
3827 void
3828 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3829 {
3830 MAILBOX_t *mb = &pmb->u.mb;
3831 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3832 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
3833 struct lpfc_vport *vport = pmb->vport;
3834
3835 pmb->context1 = NULL;
3836
3837 ndlp->nlp_rpi = mb->un.varWords[0];
3838 ndlp->nlp_flag |= NLP_RPI_VALID;
3839 ndlp->nlp_type |= NLP_FABRIC;
3840 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3841
3842 /*
3843 * Start issuing Fabric-Device Management Interface (FDMI) command to
3844 * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
3845 * fdmi-on=2 (supporting RPA/hostnmae)
3846 */
3847
3848 if (vport->cfg_fdmi_on == 1)
3849 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
3850 else
3851 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
3852
3853 /* decrement the node reference count held for this callback
3854 * function.
3855 */
3856 lpfc_nlp_put(ndlp);
3857 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3858 kfree(mp);
3859 mempool_free(pmb, phba->mbox_mem_pool);
3860
3861 return;
3862 }
3863
3864 static int
3865 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
3866 {
3867 uint16_t *rpi = param;
3868
3869 return ndlp->nlp_rpi == *rpi;
3870 }
3871
3872 static int
3873 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
3874 {
3875 return memcmp(&ndlp->nlp_portname, param,
3876 sizeof(ndlp->nlp_portname)) == 0;
3877 }
3878
3879 static struct lpfc_nodelist *
3880 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
3881 {
3882 struct lpfc_nodelist *ndlp;
3883
3884 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
3885 if (filter(ndlp, param))
3886 return ndlp;
3887 }
3888 return NULL;
3889 }
3890
3891 /*
3892 * This routine looks up the ndlp lists for the given RPI. If rpi found it
3893 * returns the node list element pointer else return NULL.
3894 */
3895 struct lpfc_nodelist *
3896 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
3897 {
3898 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
3899 }
3900
3901 /*
3902 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
3903 * returns the node element list pointer else return NULL.
3904 */
3905 struct lpfc_nodelist *
3906 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
3907 {
3908 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3909 struct lpfc_nodelist *ndlp;
3910
3911 spin_lock_irq(shost->host_lock);
3912 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
3913 spin_unlock_irq(shost->host_lock);
3914 return ndlp;
3915 }
3916
3917 void
3918 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3919 uint32_t did)
3920 {
3921 memset(ndlp, 0, sizeof (struct lpfc_nodelist));
3922
3923 lpfc_initialize_node(vport, ndlp, did);
3924 INIT_LIST_HEAD(&ndlp->nlp_listp);
3925
3926 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
3927 "node init: did:x%x",
3928 ndlp->nlp_DID, 0, 0);
3929
3930 return;
3931 }
3932
3933 /* This routine releases all resources associated with a specifc NPort's ndlp
3934 * and mempool_free's the nodelist.
3935 */
3936 static void
3937 lpfc_nlp_release(struct kref *kref)
3938 {
3939 struct lpfc_hba *phba;
3940 unsigned long flags;
3941 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
3942 kref);
3943
3944 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3945 "node release: did:x%x flg:x%x type:x%x",
3946 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3947
3948 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
3949 "0279 lpfc_nlp_release: ndlp:x%p "
3950 "usgmap:x%x refcnt:%d\n",
3951 (void *)ndlp, ndlp->nlp_usg_map,
3952 atomic_read(&ndlp->kref.refcount));
3953
3954 /* remove ndlp from action. */
3955 lpfc_nlp_remove(ndlp->vport, ndlp);
3956
3957 /* clear the ndlp active flag for all release cases */
3958 phba = ndlp->phba;
3959 spin_lock_irqsave(&phba->ndlp_lock, flags);
3960 NLP_CLR_NODE_ACT(ndlp);
3961 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3962
3963 /* free ndlp memory for final ndlp release */
3964 if (NLP_CHK_FREE_REQ(ndlp)) {
3965 kfree(ndlp->lat_data);
3966 mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
3967 }
3968 }
3969
3970 /* This routine bumps the reference count for a ndlp structure to ensure
3971 * that one discovery thread won't free a ndlp while another discovery thread
3972 * is using it.
3973 */
3974 struct lpfc_nodelist *
3975 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
3976 {
3977 struct lpfc_hba *phba;
3978 unsigned long flags;
3979
3980 if (ndlp) {
3981 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3982 "node get: did:x%x flg:x%x refcnt:x%x",
3983 ndlp->nlp_DID, ndlp->nlp_flag,
3984 atomic_read(&ndlp->kref.refcount));
3985 /* The check of ndlp usage to prevent incrementing the
3986 * ndlp reference count that is in the process of being
3987 * released.
3988 */
3989 phba = ndlp->phba;
3990 spin_lock_irqsave(&phba->ndlp_lock, flags);
3991 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
3992 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3993 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3994 "0276 lpfc_nlp_get: ndlp:x%p "
3995 "usgmap:x%x refcnt:%d\n",
3996 (void *)ndlp, ndlp->nlp_usg_map,
3997 atomic_read(&ndlp->kref.refcount));
3998 return NULL;
3999 } else
4000 kref_get(&ndlp->kref);
4001 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4002 }
4003 return ndlp;
4004 }
4005
4006 /* This routine decrements the reference count for a ndlp structure. If the
4007 * count goes to 0, this indicates the the associated nodelist should be
4008 * freed. Returning 1 indicates the ndlp resource has been released; on the
4009 * other hand, returning 0 indicates the ndlp resource has not been released
4010 * yet.
4011 */
4012 int
4013 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
4014 {
4015 struct lpfc_hba *phba;
4016 unsigned long flags;
4017
4018 if (!ndlp)
4019 return 1;
4020
4021 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4022 "node put: did:x%x flg:x%x refcnt:x%x",
4023 ndlp->nlp_DID, ndlp->nlp_flag,
4024 atomic_read(&ndlp->kref.refcount));
4025 phba = ndlp->phba;
4026 spin_lock_irqsave(&phba->ndlp_lock, flags);
4027 /* Check the ndlp memory free acknowledge flag to avoid the
4028 * possible race condition that kref_put got invoked again
4029 * after previous one has done ndlp memory free.
4030 */
4031 if (NLP_CHK_FREE_ACK(ndlp)) {
4032 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4033 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
4034 "0274 lpfc_nlp_put: ndlp:x%p "
4035 "usgmap:x%x refcnt:%d\n",
4036 (void *)ndlp, ndlp->nlp_usg_map,
4037 atomic_read(&ndlp->kref.refcount));
4038 return 1;
4039 }
4040 /* Check the ndlp inactivate log flag to avoid the possible
4041 * race condition that kref_put got invoked again after ndlp
4042 * is already in inactivating state.
4043 */
4044 if (NLP_CHK_IACT_REQ(ndlp)) {
4045 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4046 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
4047 "0275 lpfc_nlp_put: ndlp:x%p "
4048 "usgmap:x%x refcnt:%d\n",
4049 (void *)ndlp, ndlp->nlp_usg_map,
4050 atomic_read(&ndlp->kref.refcount));
4051 return 1;
4052 }
4053 /* For last put, mark the ndlp usage flags to make sure no
4054 * other kref_get and kref_put on the same ndlp shall get
4055 * in between the process when the final kref_put has been
4056 * invoked on this ndlp.
4057 */
4058 if (atomic_read(&ndlp->kref.refcount) == 1) {
4059 /* Indicate ndlp is put to inactive state. */
4060 NLP_SET_IACT_REQ(ndlp);
4061 /* Acknowledge ndlp memory free has been seen. */
4062 if (NLP_CHK_FREE_REQ(ndlp))
4063 NLP_SET_FREE_ACK(ndlp);
4064 }
4065 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4066 /* Note, the kref_put returns 1 when decrementing a reference
4067 * count that was 1, it invokes the release callback function,
4068 * but it still left the reference count as 1 (not actually
4069 * performs the last decrementation). Otherwise, it actually
4070 * decrements the reference count and returns 0.
4071 */
4072 return kref_put(&ndlp->kref, lpfc_nlp_release);
4073 }
4074
4075 /* This routine free's the specified nodelist if it is not in use
4076 * by any other discovery thread. This routine returns 1 if the
4077 * ndlp has been freed. A return value of 0 indicates the ndlp is
4078 * not yet been released.
4079 */
4080 int
4081 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
4082 {
4083 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4084 "node not used: did:x%x flg:x%x refcnt:x%x",
4085 ndlp->nlp_DID, ndlp->nlp_flag,
4086 atomic_read(&ndlp->kref.refcount));
4087 if (atomic_read(&ndlp->kref.refcount) == 1)
4088 if (lpfc_nlp_put(ndlp))
4089 return 1;
4090 return 0;
4091 }
4092
4093 /**
4094 * lpfc_fcf_inuse - Check if FCF can be unregistered.
4095 * @phba: Pointer to hba context object.
4096 *
4097 * This function iterate through all FC nodes associated
4098 * will all vports to check if there is any node with
4099 * fc_rports associated with it. If there is an fc_rport
4100 * associated with the node, then the node is either in
4101 * discovered state or its devloss_timer is pending.
4102 */
4103 static int
4104 lpfc_fcf_inuse(struct lpfc_hba *phba)
4105 {
4106 struct lpfc_vport **vports;
4107 int i, ret = 0;
4108 struct lpfc_nodelist *ndlp;
4109 struct Scsi_Host *shost;
4110
4111 vports = lpfc_create_vport_work_array(phba);
4112
4113 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4114 shost = lpfc_shost_from_vport(vports[i]);
4115 spin_lock_irq(shost->host_lock);
4116 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
4117 if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport &&
4118 (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
4119 ret = 1;
4120 spin_unlock_irq(shost->host_lock);
4121 goto out;
4122 }
4123 }
4124 spin_unlock_irq(shost->host_lock);
4125 }
4126 out:
4127 lpfc_destroy_vport_work_array(phba, vports);
4128 return ret;
4129 }
4130
4131 /**
4132 * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
4133 * @phba: Pointer to hba context object.
4134 * @mboxq: Pointer to mailbox object.
4135 *
4136 * This function frees memory associated with the mailbox command.
4137 */
4138 static void
4139 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
4140 {
4141 struct lpfc_vport *vport = mboxq->vport;
4142
4143 if (mboxq->u.mb.mbxStatus) {
4144 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4145 "2555 UNREG_VFI mbxStatus error x%x "
4146 "HBA state x%x\n",
4147 mboxq->u.mb.mbxStatus, vport->port_state);
4148 }
4149 mempool_free(mboxq, phba->mbox_mem_pool);
4150 return;
4151 }
4152
4153 /**
4154 * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
4155 * @phba: Pointer to hba context object.
4156 * @mboxq: Pointer to mailbox object.
4157 *
4158 * This function frees memory associated with the mailbox command.
4159 */
4160 static void
4161 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
4162 {
4163 struct lpfc_vport *vport = mboxq->vport;
4164
4165 if (mboxq->u.mb.mbxStatus) {
4166 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4167 "2550 UNREG_FCFI mbxStatus error x%x "
4168 "HBA state x%x\n",
4169 mboxq->u.mb.mbxStatus, vport->port_state);
4170 }
4171 mempool_free(mboxq, phba->mbox_mem_pool);
4172 return;
4173 }
4174
4175 /**
4176 * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
4177 * @phba: Pointer to hba context object.
4178 *
4179 * This function check if there are any connected remote port for the FCF and
4180 * if all the devices are disconnected, this function unregister FCFI.
4181 * This function also tries to use another FCF for discovery.
4182 */
4183 void
4184 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
4185 {
4186 LPFC_MBOXQ_t *mbox;
4187 int rc;
4188 struct lpfc_vport **vports;
4189 int i;
4190
4191 spin_lock_irq(&phba->hbalock);
4192 /*
4193 * If HBA is not running in FIP mode or
4194 * If HBA does not support FCoE or
4195 * If FCF is not registered.
4196 * do nothing.
4197 */
4198 if (!(phba->hba_flag & HBA_FCOE_SUPPORT) ||
4199 !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
4200 (phba->cfg_enable_fip == 0)) {
4201 spin_unlock_irq(&phba->hbalock);
4202 return;
4203 }
4204 spin_unlock_irq(&phba->hbalock);
4205
4206 if (lpfc_fcf_inuse(phba))
4207 return;
4208
4209
4210 /* Unregister VPIs */
4211 vports = lpfc_create_vport_work_array(phba);
4212 if (vports &&
4213 (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
4214 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4215 lpfc_mbx_unreg_vpi(vports[i]);
4216 vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
4217 vports[i]->vfi_state &= ~LPFC_VFI_REGISTERED;
4218 }
4219 lpfc_destroy_vport_work_array(phba, vports);
4220
4221 /* Unregister VFI */
4222 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4223 if (!mbox) {
4224 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4225 "2556 UNREG_VFI mbox allocation failed"
4226 "HBA state x%x\n",
4227 phba->pport->port_state);
4228 return;
4229 }
4230
4231 lpfc_unreg_vfi(mbox, phba->pport->vfi);
4232 mbox->vport = phba->pport;
4233 mbox->mbox_cmpl = lpfc_unregister_vfi_cmpl;
4234
4235 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4236 if (rc == MBX_NOT_FINISHED) {
4237 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4238 "2557 UNREG_VFI issue mbox failed rc x%x "
4239 "HBA state x%x\n",
4240 rc, phba->pport->port_state);
4241 mempool_free(mbox, phba->mbox_mem_pool);
4242 return;
4243 }
4244
4245 /* Unregister FCF */
4246 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4247 if (!mbox) {
4248 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4249 "2551 UNREG_FCFI mbox allocation failed"
4250 "HBA state x%x\n",
4251 phba->pport->port_state);
4252 return;
4253 }
4254
4255 lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
4256 mbox->vport = phba->pport;
4257 mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
4258 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4259
4260 if (rc == MBX_NOT_FINISHED) {
4261 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4262 "2552 UNREG_FCFI issue mbox failed rc x%x "
4263 "HBA state x%x\n",
4264 rc, phba->pport->port_state);
4265 mempool_free(mbox, phba->mbox_mem_pool);
4266 return;
4267 }
4268
4269 spin_lock_irq(&phba->hbalock);
4270 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_REGISTERED |
4271 FCF_DISCOVERED | FCF_BOOT_ENABLE | FCF_IN_USE |
4272 FCF_VALID_VLAN);
4273 spin_unlock_irq(&phba->hbalock);
4274
4275 /*
4276 * If driver is not unloading, check if there is any other
4277 * FCF record that can be used for discovery.
4278 */
4279 if ((phba->pport->load_flag & FC_UNLOADING) ||
4280 (phba->link_state < LPFC_LINK_UP))
4281 return;
4282
4283 rc = lpfc_sli4_read_fcf_record(phba, LPFC_FCOE_FCF_GET_FIRST);
4284
4285 if (rc)
4286 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4287 "2553 lpfc_unregister_unused_fcf failed to read FCF"
4288 " record HBA state x%x\n",
4289 phba->pport->port_state);
4290 }
4291
4292 /**
4293 * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
4294 * @phba: Pointer to hba context object.
4295 * @buff: Buffer containing the FCF connection table as in the config
4296 * region.
4297 * This function create driver data structure for the FCF connection
4298 * record table read from config region 23.
4299 */
4300 static void
4301 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
4302 uint8_t *buff)
4303 {
4304 struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
4305 struct lpfc_fcf_conn_hdr *conn_hdr;
4306 struct lpfc_fcf_conn_rec *conn_rec;
4307 uint32_t record_count;
4308 int i;
4309
4310 /* Free the current connect table */
4311 list_for_each_entry_safe(conn_entry, next_conn_entry,
4312 &phba->fcf_conn_rec_list, list)
4313 kfree(conn_entry);
4314
4315 conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
4316 record_count = conn_hdr->length * sizeof(uint32_t)/
4317 sizeof(struct lpfc_fcf_conn_rec);
4318
4319 conn_rec = (struct lpfc_fcf_conn_rec *)
4320 (buff + sizeof(struct lpfc_fcf_conn_hdr));
4321
4322 for (i = 0; i < record_count; i++) {
4323 if (!(conn_rec[i].flags & FCFCNCT_VALID))
4324 continue;
4325 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
4326 GFP_KERNEL);
4327 if (!conn_entry) {
4328 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4329 "2566 Failed to allocate connection"
4330 " table entry\n");
4331 return;
4332 }
4333
4334 memcpy(&conn_entry->conn_rec, &conn_rec[i],
4335 sizeof(struct lpfc_fcf_conn_rec));
4336 conn_entry->conn_rec.vlan_tag =
4337 le16_to_cpu(conn_entry->conn_rec.vlan_tag) & 0xFFF;
4338 conn_entry->conn_rec.flags =
4339 le16_to_cpu(conn_entry->conn_rec.flags);
4340 list_add_tail(&conn_entry->list,
4341 &phba->fcf_conn_rec_list);
4342 }
4343 }
4344
4345 /**
4346 * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
4347 * @phba: Pointer to hba context object.
4348 * @buff: Buffer containing the FCoE parameter data structure.
4349 *
4350 * This function update driver data structure with config
4351 * parameters read from config region 23.
4352 */
4353 static void
4354 lpfc_read_fcoe_param(struct lpfc_hba *phba,
4355 uint8_t *buff)
4356 {
4357 struct lpfc_fip_param_hdr *fcoe_param_hdr;
4358 struct lpfc_fcoe_params *fcoe_param;
4359
4360 fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
4361 buff;
4362 fcoe_param = (struct lpfc_fcoe_params *)
4363 buff + sizeof(struct lpfc_fip_param_hdr);
4364
4365 if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
4366 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
4367 return;
4368
4369 if (bf_get(lpfc_fip_param_hdr_fipp_mode, fcoe_param_hdr) ==
4370 FIPP_MODE_ON)
4371 phba->cfg_enable_fip = 1;
4372
4373 if (bf_get(lpfc_fip_param_hdr_fipp_mode, fcoe_param_hdr) ==
4374 FIPP_MODE_OFF)
4375 phba->cfg_enable_fip = 0;
4376
4377 if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
4378 phba->valid_vlan = 1;
4379 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
4380 0xFFF;
4381 }
4382
4383 phba->fc_map[0] = fcoe_param->fc_map[0];
4384 phba->fc_map[1] = fcoe_param->fc_map[1];
4385 phba->fc_map[2] = fcoe_param->fc_map[2];
4386 return;
4387 }
4388
4389 /**
4390 * lpfc_get_rec_conf23 - Get a record type in config region data.
4391 * @buff: Buffer containing config region 23 data.
4392 * @size: Size of the data buffer.
4393 * @rec_type: Record type to be searched.
4394 *
4395 * This function searches config region data to find the begining
4396 * of the record specified by record_type. If record found, this
4397 * function return pointer to the record else return NULL.
4398 */
4399 static uint8_t *
4400 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
4401 {
4402 uint32_t offset = 0, rec_length;
4403
4404 if ((buff[0] == LPFC_REGION23_LAST_REC) ||
4405 (size < sizeof(uint32_t)))
4406 return NULL;
4407
4408 rec_length = buff[offset + 1];
4409
4410 /*
4411 * One TLV record has one word header and number of data words
4412 * specified in the rec_length field of the record header.
4413 */
4414 while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
4415 <= size) {
4416 if (buff[offset] == rec_type)
4417 return &buff[offset];
4418
4419 if (buff[offset] == LPFC_REGION23_LAST_REC)
4420 return NULL;
4421
4422 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
4423 rec_length = buff[offset + 1];
4424 }
4425 return NULL;
4426 }
4427
4428 /**
4429 * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
4430 * @phba: Pointer to lpfc_hba data structure.
4431 * @buff: Buffer containing config region 23 data.
4432 * @size: Size of the data buffer.
4433 *
4434 * This fuction parse the FCoE config parameters in config region 23 and
4435 * populate driver data structure with the parameters.
4436 */
4437 void
4438 lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
4439 uint8_t *buff,
4440 uint32_t size)
4441 {
4442 uint32_t offset = 0, rec_length;
4443 uint8_t *rec_ptr;
4444
4445 /*
4446 * If data size is less than 2 words signature and version cannot be
4447 * verified.
4448 */
4449 if (size < 2*sizeof(uint32_t))
4450 return;
4451
4452 /* Check the region signature first */
4453 if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
4454 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4455 "2567 Config region 23 has bad signature\n");
4456 return;
4457 }
4458
4459 offset += 4;
4460
4461 /* Check the data structure version */
4462 if (buff[offset] != LPFC_REGION23_VERSION) {
4463 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4464 "2568 Config region 23 has bad version\n");
4465 return;
4466 }
4467 offset += 4;
4468
4469 rec_length = buff[offset + 1];
4470
4471 /* Read FCoE param record */
4472 rec_ptr = lpfc_get_rec_conf23(&buff[offset],
4473 size - offset, FCOE_PARAM_TYPE);
4474 if (rec_ptr)
4475 lpfc_read_fcoe_param(phba, rec_ptr);
4476
4477 /* Read FCF connection table */
4478 rec_ptr = lpfc_get_rec_conf23(&buff[offset],
4479 size - offset, FCOE_CONN_TBL_TYPE);
4480 if (rec_ptr)
4481 lpfc_read_fcf_conn_tbl(phba, rec_ptr);
4482
4483 }
linux-next