Linux 2.6.37-rc6
[linux-2.6.git] / drivers / scsi / bfa / bfa_fcs.c
1 /*
2  * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
3  * All rights reserved
4  * www.brocade.com
5  *
6  * Linux driver for Brocade Fibre Channel Host Bus Adapter.
7  *
8  * This program is free software; you can redistribute it and/or modify it
9  * under the terms of the GNU General Public License (GPL) Version 2 as
10  * published by the Free Software Foundation
11  *
12  * This program is distributed in the hope that it will be useful, but
13  * WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * General Public License for more details.
16  */
17
18 /*
19  *  bfa_fcs.c BFA FCS main
20  */
21
22 #include "bfa_fcs.h"
23 #include "bfa_fcbuild.h"
24 #include "bfad_drv.h"
25
26 BFA_TRC_FILE(FCS, FCS);
27
28 /*
29  * FCS sub-modules
30  */
31 struct bfa_fcs_mod_s {
32         void            (*attach) (struct bfa_fcs_s *fcs);
33         void            (*modinit) (struct bfa_fcs_s *fcs);
34         void            (*modexit) (struct bfa_fcs_s *fcs);
35 };
36
37 #define BFA_FCS_MODULE(_mod) { _mod ## _modinit, _mod ## _modexit }
38
39 static struct bfa_fcs_mod_s fcs_modules[] = {
40         { bfa_fcs_port_attach, NULL, NULL },
41         { bfa_fcs_uf_attach, NULL, NULL },
42         { bfa_fcs_fabric_attach, bfa_fcs_fabric_modinit,
43           bfa_fcs_fabric_modexit },
44 };
45
46 /*
47  *  fcs_api BFA FCS API
48  */
49
50 static void
51 bfa_fcs_exit_comp(void *fcs_cbarg)
52 {
53         struct bfa_fcs_s      *fcs = fcs_cbarg;
54         struct bfad_s         *bfad = fcs->bfad;
55
56         complete(&bfad->comp);
57 }
58
59
60
61 /*
62  *  fcs_api BFA FCS API
63  */
64
65 /*
66  * fcs attach -- called once to initialize data structures at driver attach time
67  */
68 void
69 bfa_fcs_attach(struct bfa_fcs_s *fcs, struct bfa_s *bfa, struct bfad_s *bfad,
70                bfa_boolean_t min_cfg)
71 {
72         int             i;
73         struct bfa_fcs_mod_s  *mod;
74
75         fcs->bfa = bfa;
76         fcs->bfad = bfad;
77         fcs->min_cfg = min_cfg;
78
79         bfa_attach_fcs(bfa);
80         fcbuild_init();
81
82         for (i = 0; i < sizeof(fcs_modules) / sizeof(fcs_modules[0]); i++) {
83                 mod = &fcs_modules[i];
84                 if (mod->attach)
85                         mod->attach(fcs);
86         }
87 }
88
89 /*
90  * fcs initialization, called once after bfa initialization is complete
91  */
92 void
93 bfa_fcs_init(struct bfa_fcs_s *fcs)
94 {
95         int             i, npbc_vports;
96         struct bfa_fcs_mod_s  *mod;
97         struct bfi_pbc_vport_s pbc_vports[BFI_PBC_MAX_VPORTS];
98
99         for (i = 0; i < sizeof(fcs_modules) / sizeof(fcs_modules[0]); i++) {
100                 mod = &fcs_modules[i];
101                 if (mod->modinit)
102                         mod->modinit(fcs);
103         }
104         /* Initialize pbc vports */
105         if (!fcs->min_cfg) {
106                 npbc_vports =
107                     bfa_iocfc_get_pbc_vports(fcs->bfa, pbc_vports);
108                 for (i = 0; i < npbc_vports; i++)
109                         bfa_fcb_pbc_vport_create(fcs->bfa->bfad, pbc_vports[i]);
110         }
111 }
112
113 /*
114  * Start FCS operations.
115  */
116 void
117 bfa_fcs_start(struct bfa_fcs_s *fcs)
118 {
119         bfa_fcs_fabric_modstart(fcs);
120 }
121
122 /*
123  *      brief
124  *              FCS driver details initialization.
125  *
126  *      param[in]               fcs             FCS instance
127  *      param[in]               driver_info     Driver Details
128  *
129  *      return None
130  */
131 void
132 bfa_fcs_driver_info_init(struct bfa_fcs_s *fcs,
133                         struct bfa_fcs_driver_info_s *driver_info)
134 {
135
136         fcs->driver_info = *driver_info;
137
138         bfa_fcs_fabric_psymb_init(&fcs->fabric);
139 }
140
141 /*
142  *      brief
143  *              FCS FDMI Driver Parameter Initialization
144  *
145  *      param[in]               fcs             FCS instance
146  *      param[in]               fdmi_enable     TRUE/FALSE
147  *
148  *      return None
149  */
150 void
151 bfa_fcs_set_fdmi_param(struct bfa_fcs_s *fcs, bfa_boolean_t fdmi_enable)
152 {
153
154         fcs->fdmi_enabled = fdmi_enable;
155
156 }
157 /*
158  *      brief
159  *              FCS instance cleanup and exit.
160  *
161  *      param[in]               fcs                     FCS instance
162  *      return None
163  */
164 void
165 bfa_fcs_exit(struct bfa_fcs_s *fcs)
166 {
167         struct bfa_fcs_mod_s  *mod;
168         int             nmods, i;
169
170         bfa_wc_init(&fcs->wc, bfa_fcs_exit_comp, fcs);
171
172         nmods = sizeof(fcs_modules) / sizeof(fcs_modules[0]);
173
174         for (i = 0; i < nmods; i++) {
175
176                 mod = &fcs_modules[i];
177                 if (mod->modexit) {
178                         bfa_wc_up(&fcs->wc);
179                         mod->modexit(fcs);
180                 }
181         }
182
183         bfa_wc_wait(&fcs->wc);
184 }
185
186
187 void
188 bfa_fcs_trc_init(struct bfa_fcs_s *fcs, struct bfa_trc_mod_s *trcmod)
189 {
190         fcs->trcmod = trcmod;
191 }
192
193 void
194 bfa_fcs_modexit_comp(struct bfa_fcs_s *fcs)
195 {
196         bfa_wc_down(&fcs->wc);
197 }
198
199 /*
200  * Fabric module implementation.
201  */
202
203 #define BFA_FCS_FABRIC_RETRY_DELAY      (2000)  /* Milliseconds */
204 #define BFA_FCS_FABRIC_CLEANUP_DELAY    (10000) /* Milliseconds */
205
206 #define bfa_fcs_fabric_set_opertype(__fabric) do {                      \
207                 if (bfa_fcport_get_topology((__fabric)->fcs->bfa)       \
208                     == BFA_PORT_TOPOLOGY_P2P)                           \
209                         (__fabric)->oper_type = BFA_PORT_TYPE_NPORT;    \
210                 else                                                    \
211                         (__fabric)->oper_type = BFA_PORT_TYPE_NLPORT;   \
212 } while (0)
213
214 /*
215  * forward declarations
216  */
217 static void bfa_fcs_fabric_init(struct bfa_fcs_fabric_s *fabric);
218 static void bfa_fcs_fabric_login(struct bfa_fcs_fabric_s *fabric);
219 static void bfa_fcs_fabric_notify_online(struct bfa_fcs_fabric_s *fabric);
220 static void bfa_fcs_fabric_notify_offline(struct bfa_fcs_fabric_s *fabric);
221 static void bfa_fcs_fabric_delay(void *cbarg);
222 static void bfa_fcs_fabric_delete(struct bfa_fcs_fabric_s *fabric);
223 static void bfa_fcs_fabric_delete_comp(void *cbarg);
224 static void bfa_fcs_fabric_process_uf(struct bfa_fcs_fabric_s *fabric,
225                                       struct fchs_s *fchs, u16 len);
226 static void bfa_fcs_fabric_process_flogi(struct bfa_fcs_fabric_s *fabric,
227                                          struct fchs_s *fchs, u16 len);
228 static void bfa_fcs_fabric_send_flogi_acc(struct bfa_fcs_fabric_s *fabric);
229 static void bfa_fcs_fabric_flogiacc_comp(void *fcsarg,
230                                          struct bfa_fcxp_s *fcxp, void *cbarg,
231                                          bfa_status_t status,
232                                          u32 rsp_len,
233                                          u32 resid_len,
234                                          struct fchs_s *rspfchs);
235 /*
236  *  fcs_fabric_sm fabric state machine functions
237  */
238
239 /*
240  * Fabric state machine events
241  */
242 enum bfa_fcs_fabric_event {
243         BFA_FCS_FABRIC_SM_CREATE        = 1,    /*  create from driver        */
244         BFA_FCS_FABRIC_SM_DELETE        = 2,    /*  delete from driver        */
245         BFA_FCS_FABRIC_SM_LINK_DOWN     = 3,    /*  link down from port      */
246         BFA_FCS_FABRIC_SM_LINK_UP       = 4,    /*  link up from port         */
247         BFA_FCS_FABRIC_SM_CONT_OP       = 5,    /*  flogi/auth continue op   */
248         BFA_FCS_FABRIC_SM_RETRY_OP      = 6,    /*  flogi/auth retry op      */
249         BFA_FCS_FABRIC_SM_NO_FABRIC     = 7,    /*  from flogi/auth           */
250         BFA_FCS_FABRIC_SM_PERF_EVFP     = 8,    /*  from flogi/auth           */
251         BFA_FCS_FABRIC_SM_ISOLATE       = 9,    /*  from EVFP processing     */
252         BFA_FCS_FABRIC_SM_NO_TAGGING    = 10,   /*  no VFT tagging from EVFP */
253         BFA_FCS_FABRIC_SM_DELAYED       = 11,   /*  timeout delay event      */
254         BFA_FCS_FABRIC_SM_AUTH_FAILED   = 12,   /*  auth failed       */
255         BFA_FCS_FABRIC_SM_AUTH_SUCCESS  = 13,   /*  auth successful           */
256         BFA_FCS_FABRIC_SM_DELCOMP       = 14,   /*  all vports deleted event */
257         BFA_FCS_FABRIC_SM_LOOPBACK      = 15,   /*  Received our own FLOGI   */
258         BFA_FCS_FABRIC_SM_START         = 16,   /*  from driver       */
259 };
260
261 static void     bfa_fcs_fabric_sm_uninit(struct bfa_fcs_fabric_s *fabric,
262                                          enum bfa_fcs_fabric_event event);
263 static void     bfa_fcs_fabric_sm_created(struct bfa_fcs_fabric_s *fabric,
264                                           enum bfa_fcs_fabric_event event);
265 static void     bfa_fcs_fabric_sm_linkdown(struct bfa_fcs_fabric_s *fabric,
266                                            enum bfa_fcs_fabric_event event);
267 static void     bfa_fcs_fabric_sm_flogi(struct bfa_fcs_fabric_s *fabric,
268                                         enum bfa_fcs_fabric_event event);
269 static void     bfa_fcs_fabric_sm_flogi_retry(struct bfa_fcs_fabric_s *fabric,
270                                               enum bfa_fcs_fabric_event event);
271 static void     bfa_fcs_fabric_sm_auth(struct bfa_fcs_fabric_s *fabric,
272                                        enum bfa_fcs_fabric_event event);
273 static void     bfa_fcs_fabric_sm_auth_failed(struct bfa_fcs_fabric_s *fabric,
274                                               enum bfa_fcs_fabric_event event);
275 static void     bfa_fcs_fabric_sm_loopback(struct bfa_fcs_fabric_s *fabric,
276                                            enum bfa_fcs_fabric_event event);
277 static void     bfa_fcs_fabric_sm_nofabric(struct bfa_fcs_fabric_s *fabric,
278                                            enum bfa_fcs_fabric_event event);
279 static void     bfa_fcs_fabric_sm_online(struct bfa_fcs_fabric_s *fabric,
280                                          enum bfa_fcs_fabric_event event);
281 static void     bfa_fcs_fabric_sm_evfp(struct bfa_fcs_fabric_s *fabric,
282                                        enum bfa_fcs_fabric_event event);
283 static void     bfa_fcs_fabric_sm_evfp_done(struct bfa_fcs_fabric_s *fabric,
284                                             enum bfa_fcs_fabric_event event);
285 static void     bfa_fcs_fabric_sm_isolated(struct bfa_fcs_fabric_s *fabric,
286                                            enum bfa_fcs_fabric_event event);
287 static void     bfa_fcs_fabric_sm_deleting(struct bfa_fcs_fabric_s *fabric,
288                                            enum bfa_fcs_fabric_event event);
289 /*
290  *   Beginning state before fabric creation.
291  */
292 static void
293 bfa_fcs_fabric_sm_uninit(struct bfa_fcs_fabric_s *fabric,
294                          enum bfa_fcs_fabric_event event)
295 {
296         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
297         bfa_trc(fabric->fcs, event);
298
299         switch (event) {
300         case BFA_FCS_FABRIC_SM_CREATE:
301                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_created);
302                 bfa_fcs_fabric_init(fabric);
303                 bfa_fcs_lport_init(&fabric->bport, &fabric->bport.port_cfg);
304                 break;
305
306         case BFA_FCS_FABRIC_SM_LINK_UP:
307         case BFA_FCS_FABRIC_SM_LINK_DOWN:
308                 break;
309
310         default:
311                 bfa_sm_fault(fabric->fcs, event);
312         }
313 }
314
315 /*
316  *   Beginning state before fabric creation.
317  */
318 static void
319 bfa_fcs_fabric_sm_created(struct bfa_fcs_fabric_s *fabric,
320                           enum bfa_fcs_fabric_event event)
321 {
322         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
323         bfa_trc(fabric->fcs, event);
324
325         switch (event) {
326         case BFA_FCS_FABRIC_SM_START:
327                 if (bfa_fcport_is_linkup(fabric->fcs->bfa)) {
328                         bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi);
329                         bfa_fcs_fabric_login(fabric);
330                 } else
331                         bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
332                 break;
333
334         case BFA_FCS_FABRIC_SM_LINK_UP:
335         case BFA_FCS_FABRIC_SM_LINK_DOWN:
336                 break;
337
338         case BFA_FCS_FABRIC_SM_DELETE:
339                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_uninit);
340                 bfa_fcs_modexit_comp(fabric->fcs);
341                 break;
342
343         default:
344                 bfa_sm_fault(fabric->fcs, event);
345         }
346 }
347
348 /*
349  *   Link is down, awaiting LINK UP event from port. This is also the
350  *   first state at fabric creation.
351  */
352 static void
353 bfa_fcs_fabric_sm_linkdown(struct bfa_fcs_fabric_s *fabric,
354                            enum bfa_fcs_fabric_event event)
355 {
356         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
357         bfa_trc(fabric->fcs, event);
358
359         switch (event) {
360         case BFA_FCS_FABRIC_SM_LINK_UP:
361                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi);
362                 bfa_fcs_fabric_login(fabric);
363                 break;
364
365         case BFA_FCS_FABRIC_SM_RETRY_OP:
366                 break;
367
368         case BFA_FCS_FABRIC_SM_DELETE:
369                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
370                 bfa_fcs_fabric_delete(fabric);
371                 break;
372
373         default:
374                 bfa_sm_fault(fabric->fcs, event);
375         }
376 }
377
378 /*
379  *   FLOGI is in progress, awaiting FLOGI reply.
380  */
381 static void
382 bfa_fcs_fabric_sm_flogi(struct bfa_fcs_fabric_s *fabric,
383                         enum bfa_fcs_fabric_event event)
384 {
385         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
386         bfa_trc(fabric->fcs, event);
387
388         switch (event) {
389         case BFA_FCS_FABRIC_SM_CONT_OP:
390
391                 bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
392                                            fabric->bb_credit);
393                 fabric->fab_type = BFA_FCS_FABRIC_SWITCHED;
394
395                 if (fabric->auth_reqd && fabric->is_auth) {
396                         bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_auth);
397                         bfa_trc(fabric->fcs, event);
398                 } else {
399                         bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_online);
400                         bfa_fcs_fabric_notify_online(fabric);
401                 }
402                 break;
403
404         case BFA_FCS_FABRIC_SM_RETRY_OP:
405                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi_retry);
406                 bfa_timer_start(fabric->fcs->bfa, &fabric->delay_timer,
407                                 bfa_fcs_fabric_delay, fabric,
408                                 BFA_FCS_FABRIC_RETRY_DELAY);
409                 break;
410
411         case BFA_FCS_FABRIC_SM_LOOPBACK:
412                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_loopback);
413                 bfa_lps_discard(fabric->lps);
414                 bfa_fcs_fabric_set_opertype(fabric);
415                 break;
416
417         case BFA_FCS_FABRIC_SM_NO_FABRIC:
418                 fabric->fab_type = BFA_FCS_FABRIC_N2N;
419                 bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
420                                            fabric->bb_credit);
421                 bfa_fcs_fabric_notify_online(fabric);
422                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_nofabric);
423                 break;
424
425         case BFA_FCS_FABRIC_SM_LINK_DOWN:
426                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
427                 bfa_lps_discard(fabric->lps);
428                 break;
429
430         case BFA_FCS_FABRIC_SM_DELETE:
431                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
432                 bfa_lps_discard(fabric->lps);
433                 bfa_fcs_fabric_delete(fabric);
434                 break;
435
436         default:
437                 bfa_sm_fault(fabric->fcs, event);
438         }
439 }
440
441
442 static void
443 bfa_fcs_fabric_sm_flogi_retry(struct bfa_fcs_fabric_s *fabric,
444                               enum bfa_fcs_fabric_event event)
445 {
446         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
447         bfa_trc(fabric->fcs, event);
448
449         switch (event) {
450         case BFA_FCS_FABRIC_SM_DELAYED:
451                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi);
452                 bfa_fcs_fabric_login(fabric);
453                 break;
454
455         case BFA_FCS_FABRIC_SM_LINK_DOWN:
456                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
457                 bfa_timer_stop(&fabric->delay_timer);
458                 break;
459
460         case BFA_FCS_FABRIC_SM_DELETE:
461                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
462                 bfa_timer_stop(&fabric->delay_timer);
463                 bfa_fcs_fabric_delete(fabric);
464                 break;
465
466         default:
467                 bfa_sm_fault(fabric->fcs, event);
468         }
469 }
470
471 /*
472  *   Authentication is in progress, awaiting authentication results.
473  */
474 static void
475 bfa_fcs_fabric_sm_auth(struct bfa_fcs_fabric_s *fabric,
476                        enum bfa_fcs_fabric_event event)
477 {
478         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
479         bfa_trc(fabric->fcs, event);
480
481         switch (event) {
482         case BFA_FCS_FABRIC_SM_AUTH_FAILED:
483                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_auth_failed);
484                 bfa_lps_discard(fabric->lps);
485                 break;
486
487         case BFA_FCS_FABRIC_SM_AUTH_SUCCESS:
488                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_online);
489                 bfa_fcs_fabric_notify_online(fabric);
490                 break;
491
492         case BFA_FCS_FABRIC_SM_PERF_EVFP:
493                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_evfp);
494                 break;
495
496         case BFA_FCS_FABRIC_SM_LINK_DOWN:
497                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
498                 bfa_lps_discard(fabric->lps);
499                 break;
500
501         case BFA_FCS_FABRIC_SM_DELETE:
502                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
503                 bfa_fcs_fabric_delete(fabric);
504                 break;
505
506         default:
507                 bfa_sm_fault(fabric->fcs, event);
508         }
509 }
510
511 /*
512  *   Authentication failed
513  */
514 static void
515 bfa_fcs_fabric_sm_auth_failed(struct bfa_fcs_fabric_s *fabric,
516                               enum bfa_fcs_fabric_event event)
517 {
518         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
519         bfa_trc(fabric->fcs, event);
520
521         switch (event) {
522         case BFA_FCS_FABRIC_SM_LINK_DOWN:
523                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
524                 bfa_fcs_fabric_notify_offline(fabric);
525                 break;
526
527         case BFA_FCS_FABRIC_SM_DELETE:
528                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
529                 bfa_fcs_fabric_delete(fabric);
530                 break;
531
532         default:
533                 bfa_sm_fault(fabric->fcs, event);
534         }
535 }
536
537 /*
538  *   Port is in loopback mode.
539  */
540 static void
541 bfa_fcs_fabric_sm_loopback(struct bfa_fcs_fabric_s *fabric,
542                            enum bfa_fcs_fabric_event event)
543 {
544         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
545         bfa_trc(fabric->fcs, event);
546
547         switch (event) {
548         case BFA_FCS_FABRIC_SM_LINK_DOWN:
549                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
550                 bfa_fcs_fabric_notify_offline(fabric);
551                 break;
552
553         case BFA_FCS_FABRIC_SM_DELETE:
554                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
555                 bfa_fcs_fabric_delete(fabric);
556                 break;
557
558         default:
559                 bfa_sm_fault(fabric->fcs, event);
560         }
561 }
562
563 /*
564  *   There is no attached fabric - private loop or NPort-to-NPort topology.
565  */
566 static void
567 bfa_fcs_fabric_sm_nofabric(struct bfa_fcs_fabric_s *fabric,
568                            enum bfa_fcs_fabric_event event)
569 {
570         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
571         bfa_trc(fabric->fcs, event);
572
573         switch (event) {
574         case BFA_FCS_FABRIC_SM_LINK_DOWN:
575                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
576                 bfa_lps_discard(fabric->lps);
577                 bfa_fcs_fabric_notify_offline(fabric);
578                 break;
579
580         case BFA_FCS_FABRIC_SM_DELETE:
581                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
582                 bfa_fcs_fabric_delete(fabric);
583                 break;
584
585         case BFA_FCS_FABRIC_SM_NO_FABRIC:
586                 bfa_trc(fabric->fcs, fabric->bb_credit);
587                 bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
588                                            fabric->bb_credit);
589                 break;
590
591         default:
592                 bfa_sm_fault(fabric->fcs, event);
593         }
594 }
595
596 /*
597  *   Fabric is online - normal operating state.
598  */
599 static void
600 bfa_fcs_fabric_sm_online(struct bfa_fcs_fabric_s *fabric,
601                          enum bfa_fcs_fabric_event event)
602 {
603         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
604         bfa_trc(fabric->fcs, event);
605
606         switch (event) {
607         case BFA_FCS_FABRIC_SM_LINK_DOWN:
608                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
609                 bfa_lps_discard(fabric->lps);
610                 bfa_fcs_fabric_notify_offline(fabric);
611                 break;
612
613         case BFA_FCS_FABRIC_SM_DELETE:
614                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
615                 bfa_fcs_fabric_delete(fabric);
616                 break;
617
618         case BFA_FCS_FABRIC_SM_AUTH_FAILED:
619                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_auth_failed);
620                 bfa_lps_discard(fabric->lps);
621                 break;
622
623         case BFA_FCS_FABRIC_SM_AUTH_SUCCESS:
624                 break;
625
626         default:
627                 bfa_sm_fault(fabric->fcs, event);
628         }
629 }
630
631 /*
632  *   Exchanging virtual fabric parameters.
633  */
634 static void
635 bfa_fcs_fabric_sm_evfp(struct bfa_fcs_fabric_s *fabric,
636                        enum bfa_fcs_fabric_event event)
637 {
638         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
639         bfa_trc(fabric->fcs, event);
640
641         switch (event) {
642         case BFA_FCS_FABRIC_SM_CONT_OP:
643                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_evfp_done);
644                 break;
645
646         case BFA_FCS_FABRIC_SM_ISOLATE:
647                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_isolated);
648                 break;
649
650         default:
651                 bfa_sm_fault(fabric->fcs, event);
652         }
653 }
654
655 /*
656  *   EVFP exchange complete and VFT tagging is enabled.
657  */
658 static void
659 bfa_fcs_fabric_sm_evfp_done(struct bfa_fcs_fabric_s *fabric,
660                             enum bfa_fcs_fabric_event event)
661 {
662         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
663         bfa_trc(fabric->fcs, event);
664 }
665
666 /*
667  *   Port is isolated after EVFP exchange due to VF_ID mismatch (N and F).
668  */
669 static void
670 bfa_fcs_fabric_sm_isolated(struct bfa_fcs_fabric_s *fabric,
671                            enum bfa_fcs_fabric_event event)
672 {
673         struct bfad_s *bfad = (struct bfad_s *)fabric->fcs->bfad;
674         char    pwwn_ptr[BFA_STRING_32];
675
676         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
677         bfa_trc(fabric->fcs, event);
678         wwn2str(pwwn_ptr, fabric->bport.port_cfg.pwwn);
679
680         BFA_LOG(KERN_INFO, bfad, log_level,
681                 "Port is isolated due to VF_ID mismatch. "
682                 "PWWN: %s Port VF_ID: %04x switch port VF_ID: %04x.",
683                 pwwn_ptr, fabric->fcs->port_vfid,
684                 fabric->event_arg.swp_vfid);
685 }
686
687 /*
688  *   Fabric is being deleted, awaiting vport delete completions.
689  */
690 static void
691 bfa_fcs_fabric_sm_deleting(struct bfa_fcs_fabric_s *fabric,
692                            enum bfa_fcs_fabric_event event)
693 {
694         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
695         bfa_trc(fabric->fcs, event);
696
697         switch (event) {
698         case BFA_FCS_FABRIC_SM_DELCOMP:
699                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_uninit);
700                 bfa_fcs_modexit_comp(fabric->fcs);
701                 break;
702
703         case BFA_FCS_FABRIC_SM_LINK_UP:
704                 break;
705
706         case BFA_FCS_FABRIC_SM_LINK_DOWN:
707                 bfa_fcs_fabric_notify_offline(fabric);
708                 break;
709
710         default:
711                 bfa_sm_fault(fabric->fcs, event);
712         }
713 }
714
715
716
717 /*
718  *  fcs_fabric_private fabric private functions
719  */
720
721 static void
722 bfa_fcs_fabric_init(struct bfa_fcs_fabric_s *fabric)
723 {
724         struct bfa_lport_cfg_s *port_cfg = &fabric->bport.port_cfg;
725
726         port_cfg->roles = BFA_LPORT_ROLE_FCP_IM;
727         port_cfg->nwwn = bfa_ioc_get_nwwn(&fabric->fcs->bfa->ioc);
728         port_cfg->pwwn = bfa_ioc_get_pwwn(&fabric->fcs->bfa->ioc);
729 }
730
731 /*
732  * Port Symbolic Name Creation for base port.
733  */
734 void
735 bfa_fcs_fabric_psymb_init(struct bfa_fcs_fabric_s *fabric)
736 {
737         struct bfa_lport_cfg_s *port_cfg = &fabric->bport.port_cfg;
738         char model[BFA_ADAPTER_MODEL_NAME_LEN] = {0};
739         struct bfa_fcs_driver_info_s *driver_info = &fabric->fcs->driver_info;
740
741         bfa_ioc_get_adapter_model(&fabric->fcs->bfa->ioc, model);
742
743         /* Model name/number */
744         strncpy((char *)&port_cfg->sym_name, model,
745                 BFA_FCS_PORT_SYMBNAME_MODEL_SZ);
746         strncat((char *)&port_cfg->sym_name, BFA_FCS_PORT_SYMBNAME_SEPARATOR,
747                 sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
748
749         /* Driver Version */
750         strncat((char *)&port_cfg->sym_name, (char *)driver_info->version,
751                 BFA_FCS_PORT_SYMBNAME_VERSION_SZ);
752         strncat((char *)&port_cfg->sym_name, BFA_FCS_PORT_SYMBNAME_SEPARATOR,
753                 sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
754
755         /* Host machine name */
756         strncat((char *)&port_cfg->sym_name,
757                 (char *)driver_info->host_machine_name,
758                 BFA_FCS_PORT_SYMBNAME_MACHINENAME_SZ);
759         strncat((char *)&port_cfg->sym_name, BFA_FCS_PORT_SYMBNAME_SEPARATOR,
760                 sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
761
762         /*
763          * Host OS Info :
764          * If OS Patch Info is not there, do not truncate any bytes from the
765          * OS name string and instead copy the entire OS info string (64 bytes).
766          */
767         if (driver_info->host_os_patch[0] == '\0') {
768                 strncat((char *)&port_cfg->sym_name,
769                         (char *)driver_info->host_os_name,
770                         BFA_FCS_OS_STR_LEN);
771                 strncat((char *)&port_cfg->sym_name,
772                         BFA_FCS_PORT_SYMBNAME_SEPARATOR,
773                         sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
774         } else {
775                 strncat((char *)&port_cfg->sym_name,
776                         (char *)driver_info->host_os_name,
777                         BFA_FCS_PORT_SYMBNAME_OSINFO_SZ);
778                 strncat((char *)&port_cfg->sym_name,
779                         BFA_FCS_PORT_SYMBNAME_SEPARATOR,
780                         sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
781
782                 /* Append host OS Patch Info */
783                 strncat((char *)&port_cfg->sym_name,
784                         (char *)driver_info->host_os_patch,
785                         BFA_FCS_PORT_SYMBNAME_OSPATCH_SZ);
786         }
787
788         /* null terminate */
789         port_cfg->sym_name.symname[BFA_SYMNAME_MAXLEN - 1] = 0;
790 }
791
792 /*
793  * bfa lps login completion callback
794  */
795 void
796 bfa_cb_lps_flogi_comp(void *bfad, void *uarg, bfa_status_t status)
797 {
798         struct bfa_fcs_fabric_s *fabric = uarg;
799
800         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
801         bfa_trc(fabric->fcs, status);
802
803         switch (status) {
804         case BFA_STATUS_OK:
805                 fabric->stats.flogi_accepts++;
806                 break;
807
808         case BFA_STATUS_INVALID_MAC:
809                 /* Only for CNA */
810                 fabric->stats.flogi_acc_err++;
811                 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
812
813                 return;
814
815         case BFA_STATUS_EPROTOCOL:
816                 switch (bfa_lps_get_extstatus(fabric->lps)) {
817                 case BFA_EPROTO_BAD_ACCEPT:
818                         fabric->stats.flogi_acc_err++;
819                         break;
820
821                 case BFA_EPROTO_UNKNOWN_RSP:
822                         fabric->stats.flogi_unknown_rsp++;
823                         break;
824
825                 default:
826                         break;
827                 }
828                 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
829
830                 return;
831
832         case BFA_STATUS_FABRIC_RJT:
833                 fabric->stats.flogi_rejects++;
834                 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
835                 return;
836
837         default:
838                 fabric->stats.flogi_rsp_err++;
839                 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
840                 return;
841         }
842
843         fabric->bb_credit = bfa_lps_get_peer_bbcredit(fabric->lps);
844         bfa_trc(fabric->fcs, fabric->bb_credit);
845
846         if (!bfa_lps_is_brcd_fabric(fabric->lps))
847                 fabric->fabric_name =  bfa_lps_get_peer_nwwn(fabric->lps);
848
849         /*
850          * Check port type. It should be 1 = F-port.
851          */
852         if (bfa_lps_is_fport(fabric->lps)) {
853                 fabric->bport.pid = bfa_lps_get_pid(fabric->lps);
854                 fabric->is_npiv = bfa_lps_is_npiv_en(fabric->lps);
855                 fabric->is_auth = bfa_lps_is_authreq(fabric->lps);
856                 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_CONT_OP);
857         } else {
858                 /*
859                  * Nport-2-Nport direct attached
860                  */
861                 fabric->bport.port_topo.pn2n.rem_port_wwn =
862                         bfa_lps_get_peer_pwwn(fabric->lps);
863                 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_NO_FABRIC);
864         }
865
866         bfa_trc(fabric->fcs, fabric->bport.pid);
867         bfa_trc(fabric->fcs, fabric->is_npiv);
868         bfa_trc(fabric->fcs, fabric->is_auth);
869 }
870 /*
871  *              Allocate and send FLOGI.
872  */
873 static void
874 bfa_fcs_fabric_login(struct bfa_fcs_fabric_s *fabric)
875 {
876         struct bfa_s            *bfa = fabric->fcs->bfa;
877         struct bfa_lport_cfg_s  *pcfg = &fabric->bport.port_cfg;
878         u8                      alpa = 0;
879
880         if (bfa_fcport_get_topology(bfa) == BFA_PORT_TOPOLOGY_LOOP)
881                 alpa = bfa_fcport_get_myalpa(bfa);
882
883         bfa_lps_flogi(fabric->lps, fabric, alpa, bfa_fcport_get_maxfrsize(bfa),
884                       pcfg->pwwn, pcfg->nwwn, fabric->auth_reqd);
885
886         fabric->stats.flogi_sent++;
887 }
888
889 static void
890 bfa_fcs_fabric_notify_online(struct bfa_fcs_fabric_s *fabric)
891 {
892         struct bfa_fcs_vport_s *vport;
893         struct list_head              *qe, *qen;
894
895         bfa_trc(fabric->fcs, fabric->fabric_name);
896
897         bfa_fcs_fabric_set_opertype(fabric);
898         fabric->stats.fabric_onlines++;
899
900         /*
901          * notify online event to base and then virtual ports
902          */
903         bfa_fcs_lport_online(&fabric->bport);
904
905         list_for_each_safe(qe, qen, &fabric->vport_q) {
906                 vport = (struct bfa_fcs_vport_s *) qe;
907                 bfa_fcs_vport_online(vport);
908         }
909 }
910
911 static void
912 bfa_fcs_fabric_notify_offline(struct bfa_fcs_fabric_s *fabric)
913 {
914         struct bfa_fcs_vport_s *vport;
915         struct list_head              *qe, *qen;
916
917         bfa_trc(fabric->fcs, fabric->fabric_name);
918         fabric->stats.fabric_offlines++;
919
920         /*
921          * notify offline event first to vports and then base port.
922          */
923         list_for_each_safe(qe, qen, &fabric->vport_q) {
924                 vport = (struct bfa_fcs_vport_s *) qe;
925                 bfa_fcs_vport_offline(vport);
926         }
927
928         bfa_fcs_lport_offline(&fabric->bport);
929
930         fabric->fabric_name = 0;
931         fabric->fabric_ip_addr[0] = 0;
932 }
933
934 static void
935 bfa_fcs_fabric_delay(void *cbarg)
936 {
937         struct bfa_fcs_fabric_s *fabric = cbarg;
938
939         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_DELAYED);
940 }
941
942 /*
943  * Delete all vports and wait for vport delete completions.
944  */
945 static void
946 bfa_fcs_fabric_delete(struct bfa_fcs_fabric_s *fabric)
947 {
948         struct bfa_fcs_vport_s *vport;
949         struct list_head              *qe, *qen;
950
951         list_for_each_safe(qe, qen, &fabric->vport_q) {
952                 vport = (struct bfa_fcs_vport_s *) qe;
953                 bfa_fcs_vport_fcs_delete(vport);
954         }
955
956         bfa_fcs_lport_delete(&fabric->bport);
957         bfa_wc_wait(&fabric->wc);
958 }
959
960 static void
961 bfa_fcs_fabric_delete_comp(void *cbarg)
962 {
963         struct bfa_fcs_fabric_s *fabric = cbarg;
964
965         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_DELCOMP);
966 }
967
968 /*
969  *  fcs_fabric_public fabric public functions
970  */
971
972 /*
973  * Attach time initialization.
974  */
975 void
976 bfa_fcs_fabric_attach(struct bfa_fcs_s *fcs)
977 {
978         struct bfa_fcs_fabric_s *fabric;
979
980         fabric = &fcs->fabric;
981         memset(fabric, 0, sizeof(struct bfa_fcs_fabric_s));
982
983         /*
984          * Initialize base fabric.
985          */
986         fabric->fcs = fcs;
987         INIT_LIST_HEAD(&fabric->vport_q);
988         INIT_LIST_HEAD(&fabric->vf_q);
989         fabric->lps = bfa_lps_alloc(fcs->bfa);
990         bfa_assert(fabric->lps);
991
992         /*
993          * Initialize fabric delete completion handler. Fabric deletion is
994          * complete when the last vport delete is complete.
995          */
996         bfa_wc_init(&fabric->wc, bfa_fcs_fabric_delete_comp, fabric);
997         bfa_wc_up(&fabric->wc); /* For the base port */
998
999         bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_uninit);
1000         bfa_fcs_lport_attach(&fabric->bport, fabric->fcs, FC_VF_ID_NULL, NULL);
1001 }
1002
1003 void
1004 bfa_fcs_fabric_modinit(struct bfa_fcs_s *fcs)
1005 {
1006         bfa_sm_send_event(&fcs->fabric, BFA_FCS_FABRIC_SM_CREATE);
1007         bfa_trc(fcs, 0);
1008 }
1009
1010 /*
1011  *   Module cleanup
1012  */
1013 void
1014 bfa_fcs_fabric_modexit(struct bfa_fcs_s *fcs)
1015 {
1016         struct bfa_fcs_fabric_s *fabric;
1017
1018         bfa_trc(fcs, 0);
1019
1020         /*
1021          * Cleanup base fabric.
1022          */
1023         fabric = &fcs->fabric;
1024         bfa_lps_delete(fabric->lps);
1025         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_DELETE);
1026 }
1027
1028 /*
1029  * Fabric module start -- kick starts FCS actions
1030  */
1031 void
1032 bfa_fcs_fabric_modstart(struct bfa_fcs_s *fcs)
1033 {
1034         struct bfa_fcs_fabric_s *fabric;
1035
1036         bfa_trc(fcs, 0);
1037         fabric = &fcs->fabric;
1038         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_START);
1039 }
1040
1041 /*
1042  *   Suspend fabric activity as part of driver suspend.
1043  */
1044 void
1045 bfa_fcs_fabric_modsusp(struct bfa_fcs_s *fcs)
1046 {
1047 }
1048
1049 bfa_boolean_t
1050 bfa_fcs_fabric_is_loopback(struct bfa_fcs_fabric_s *fabric)
1051 {
1052         return bfa_sm_cmp_state(fabric, bfa_fcs_fabric_sm_loopback);
1053 }
1054
1055 bfa_boolean_t
1056 bfa_fcs_fabric_is_auth_failed(struct bfa_fcs_fabric_s *fabric)
1057 {
1058         return bfa_sm_cmp_state(fabric, bfa_fcs_fabric_sm_auth_failed);
1059 }
1060
1061 enum bfa_port_type
1062 bfa_fcs_fabric_port_type(struct bfa_fcs_fabric_s *fabric)
1063 {
1064         return fabric->oper_type;
1065 }
1066
1067 /*
1068  *   Link up notification from BFA physical port module.
1069  */
1070 void
1071 bfa_fcs_fabric_link_up(struct bfa_fcs_fabric_s *fabric)
1072 {
1073         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
1074         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LINK_UP);
1075 }
1076
1077 /*
1078  *   Link down notification from BFA physical port module.
1079  */
1080 void
1081 bfa_fcs_fabric_link_down(struct bfa_fcs_fabric_s *fabric)
1082 {
1083         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
1084         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LINK_DOWN);
1085 }
1086
1087 /*
1088  *   A child vport is being created in the fabric.
1089  *
1090  *   Call from vport module at vport creation. A list of base port and vports
1091  *   belonging to a fabric is maintained to propagate link events.
1092  *
1093  *   param[in] fabric - Fabric instance. This can be a base fabric or vf.
1094  *   param[in] vport  - Vport being created.
1095  *
1096  *   @return None (always succeeds)
1097  */
1098 void
1099 bfa_fcs_fabric_addvport(struct bfa_fcs_fabric_s *fabric,
1100                         struct bfa_fcs_vport_s *vport)
1101 {
1102         /*
1103          * - add vport to fabric's vport_q
1104          */
1105         bfa_trc(fabric->fcs, fabric->vf_id);
1106
1107         list_add_tail(&vport->qe, &fabric->vport_q);
1108         fabric->num_vports++;
1109         bfa_wc_up(&fabric->wc);
1110 }
1111
1112 /*
1113  *   A child vport is being deleted from fabric.
1114  *
1115  *   Vport is being deleted.
1116  */
1117 void
1118 bfa_fcs_fabric_delvport(struct bfa_fcs_fabric_s *fabric,
1119                         struct bfa_fcs_vport_s *vport)
1120 {
1121         list_del(&vport->qe);
1122         fabric->num_vports--;
1123         bfa_wc_down(&fabric->wc);
1124 }
1125
1126 /*
1127  *   Base port is deleted.
1128  */
1129 void
1130 bfa_fcs_fabric_port_delete_comp(struct bfa_fcs_fabric_s *fabric)
1131 {
1132         bfa_wc_down(&fabric->wc);
1133 }
1134
1135
1136 /*
1137  *    Check if fabric is online.
1138  *
1139  *   param[in] fabric - Fabric instance. This can be a base fabric or vf.
1140  *
1141  *   @return  TRUE/FALSE
1142  */
1143 int
1144 bfa_fcs_fabric_is_online(struct bfa_fcs_fabric_s *fabric)
1145 {
1146         return bfa_sm_cmp_state(fabric, bfa_fcs_fabric_sm_online);
1147 }
1148
1149 /*
1150  *      brief
1151  *
1152  */
1153 bfa_status_t
1154 bfa_fcs_fabric_addvf(struct bfa_fcs_fabric_s *vf, struct bfa_fcs_s *fcs,
1155                      struct bfa_lport_cfg_s *port_cfg, struct bfad_vf_s *vf_drv)
1156 {
1157         bfa_sm_set_state(vf, bfa_fcs_fabric_sm_uninit);
1158         return BFA_STATUS_OK;
1159 }
1160
1161 /*
1162  * Lookup for a vport withing a fabric given its pwwn
1163  */
1164 struct bfa_fcs_vport_s *
1165 bfa_fcs_fabric_vport_lookup(struct bfa_fcs_fabric_s *fabric, wwn_t pwwn)
1166 {
1167         struct bfa_fcs_vport_s *vport;
1168         struct list_head              *qe;
1169
1170         list_for_each(qe, &fabric->vport_q) {
1171                 vport = (struct bfa_fcs_vport_s *) qe;
1172                 if (bfa_fcs_lport_get_pwwn(&vport->lport) == pwwn)
1173                         return vport;
1174         }
1175
1176         return NULL;
1177 }
1178
1179 /*
1180  *    In a given fabric, return the number of lports.
1181  *
1182  *   param[in] fabric - Fabric instance. This can be a base fabric or vf.
1183  *
1184  *   @return : 1 or more.
1185  */
1186 u16
1187 bfa_fcs_fabric_vport_count(struct bfa_fcs_fabric_s *fabric)
1188 {
1189         return fabric->num_vports;
1190 }
1191
1192 /*
1193  *  Get OUI of the attached switch.
1194  *
1195  *  Note : Use of this function should be avoided as much as possible.
1196  *         This function should be used only if there is any requirement
1197 *          to check for FOS version below 6.3.
1198  *         To check if the attached fabric is a brocade fabric, use
1199  *         bfa_lps_is_brcd_fabric() which works for FOS versions 6.3
1200  *         or above only.
1201  */
1202
1203 u16
1204 bfa_fcs_fabric_get_switch_oui(struct bfa_fcs_fabric_s *fabric)
1205 {
1206         wwn_t fab_nwwn;
1207         u8 *tmp;
1208         u16 oui;
1209
1210         fab_nwwn = bfa_lps_get_peer_nwwn(fabric->lps);
1211
1212         tmp = (u8 *)&fab_nwwn;
1213         oui = (tmp[3] << 8) | tmp[4];
1214
1215         return oui;
1216 }
1217 /*
1218  *              Unsolicited frame receive handling.
1219  */
1220 void
1221 bfa_fcs_fabric_uf_recv(struct bfa_fcs_fabric_s *fabric, struct fchs_s *fchs,
1222                        u16 len)
1223 {
1224         u32     pid = fchs->d_id;
1225         struct bfa_fcs_vport_s *vport;
1226         struct list_head              *qe;
1227         struct fc_els_cmd_s *els_cmd = (struct fc_els_cmd_s *) (fchs + 1);
1228         struct fc_logi_s *flogi = (struct fc_logi_s *) els_cmd;
1229
1230         bfa_trc(fabric->fcs, len);
1231         bfa_trc(fabric->fcs, pid);
1232
1233         /*
1234          * Look for our own FLOGI frames being looped back. This means an
1235          * external loopback cable is in place. Our own FLOGI frames are
1236          * sometimes looped back when switch port gets temporarily bypassed.
1237          */
1238         if ((pid == bfa_os_ntoh3b(FC_FABRIC_PORT)) &&
1239             (els_cmd->els_code == FC_ELS_FLOGI) &&
1240             (flogi->port_name == bfa_fcs_lport_get_pwwn(&fabric->bport))) {
1241                 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LOOPBACK);
1242                 return;
1243         }
1244
1245         /*
1246          * FLOGI/EVFP exchanges should be consumed by base fabric.
1247          */
1248         if (fchs->d_id == bfa_os_hton3b(FC_FABRIC_PORT)) {
1249                 bfa_trc(fabric->fcs, pid);
1250                 bfa_fcs_fabric_process_uf(fabric, fchs, len);
1251                 return;
1252         }
1253
1254         if (fabric->bport.pid == pid) {
1255                 /*
1256                  * All authentication frames should be routed to auth
1257                  */
1258                 bfa_trc(fabric->fcs, els_cmd->els_code);
1259                 if (els_cmd->els_code == FC_ELS_AUTH) {
1260                         bfa_trc(fabric->fcs, els_cmd->els_code);
1261                         return;
1262                 }
1263
1264                 bfa_trc(fabric->fcs, *(u8 *) ((u8 *) fchs));
1265                 bfa_fcs_lport_uf_recv(&fabric->bport, fchs, len);
1266                 return;
1267         }
1268
1269         /*
1270          * look for a matching local port ID
1271          */
1272         list_for_each(qe, &fabric->vport_q) {
1273                 vport = (struct bfa_fcs_vport_s *) qe;
1274                 if (vport->lport.pid == pid) {
1275                         bfa_fcs_lport_uf_recv(&vport->lport, fchs, len);
1276                         return;
1277                 }
1278         }
1279         bfa_trc(fabric->fcs, els_cmd->els_code);
1280         bfa_fcs_lport_uf_recv(&fabric->bport, fchs, len);
1281 }
1282
1283 /*
1284  *              Unsolicited frames to be processed by fabric.
1285  */
1286 static void
1287 bfa_fcs_fabric_process_uf(struct bfa_fcs_fabric_s *fabric, struct fchs_s *fchs,
1288                           u16 len)
1289 {
1290         struct fc_els_cmd_s *els_cmd = (struct fc_els_cmd_s *) (fchs + 1);
1291
1292         bfa_trc(fabric->fcs, els_cmd->els_code);
1293
1294         switch (els_cmd->els_code) {
1295         case FC_ELS_FLOGI:
1296                 bfa_fcs_fabric_process_flogi(fabric, fchs, len);
1297                 break;
1298
1299         default:
1300                 /*
1301                  * need to generate a LS_RJT
1302                  */
1303                 break;
1304         }
1305 }
1306
1307 /*
1308  *      Process incoming FLOGI
1309  */
1310 static void
1311 bfa_fcs_fabric_process_flogi(struct bfa_fcs_fabric_s *fabric,
1312                         struct fchs_s *fchs, u16 len)
1313 {
1314         struct fc_logi_s *flogi = (struct fc_logi_s *) (fchs + 1);
1315         struct bfa_fcs_lport_s *bport = &fabric->bport;
1316
1317         bfa_trc(fabric->fcs, fchs->s_id);
1318
1319         fabric->stats.flogi_rcvd++;
1320         /*
1321          * Check port type. It should be 0 = n-port.
1322          */
1323         if (flogi->csp.port_type) {
1324                 /*
1325                  * @todo: may need to send a LS_RJT
1326                  */
1327                 bfa_trc(fabric->fcs, flogi->port_name);
1328                 fabric->stats.flogi_rejected++;
1329                 return;
1330         }
1331
1332         fabric->bb_credit = be16_to_cpu(flogi->csp.bbcred);
1333         bport->port_topo.pn2n.rem_port_wwn = flogi->port_name;
1334         bport->port_topo.pn2n.reply_oxid = fchs->ox_id;
1335
1336         /*
1337          * Send a Flogi Acc
1338          */
1339         bfa_fcs_fabric_send_flogi_acc(fabric);
1340         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_NO_FABRIC);
1341 }
1342
1343 static void
1344 bfa_fcs_fabric_send_flogi_acc(struct bfa_fcs_fabric_s *fabric)
1345 {
1346         struct bfa_lport_cfg_s *pcfg = &fabric->bport.port_cfg;
1347         struct bfa_fcs_lport_n2n_s *n2n_port = &fabric->bport.port_topo.pn2n;
1348         struct bfa_s      *bfa = fabric->fcs->bfa;
1349         struct bfa_fcxp_s *fcxp;
1350         u16     reqlen;
1351         struct fchs_s   fchs;
1352
1353         fcxp = bfa_fcs_fcxp_alloc(fabric->fcs);
1354         /*
1355          * Do not expect this failure -- expect remote node to retry
1356          */
1357         if (!fcxp)
1358                 return;
1359
1360         reqlen = fc_flogi_acc_build(&fchs, bfa_fcxp_get_reqbuf(fcxp),
1361                                     bfa_os_hton3b(FC_FABRIC_PORT),
1362                                     n2n_port->reply_oxid, pcfg->pwwn,
1363                                     pcfg->nwwn,
1364                                     bfa_fcport_get_maxfrsize(bfa),
1365                                     bfa_fcport_get_rx_bbcredit(bfa));
1366
1367         bfa_fcxp_send(fcxp, NULL, fabric->vf_id, bfa_lps_get_tag(fabric->lps),
1368                       BFA_FALSE, FC_CLASS_3,
1369                       reqlen, &fchs, bfa_fcs_fabric_flogiacc_comp, fabric,
1370                       FC_MAX_PDUSZ, 0);
1371 }
1372
1373 /*
1374  *   Flogi Acc completion callback.
1375  */
1376 static void
1377 bfa_fcs_fabric_flogiacc_comp(void *fcsarg, struct bfa_fcxp_s *fcxp, void *cbarg,
1378                              bfa_status_t status, u32 rsp_len,
1379                              u32 resid_len, struct fchs_s *rspfchs)
1380 {
1381         struct bfa_fcs_fabric_s *fabric = cbarg;
1382
1383         bfa_trc(fabric->fcs, status);
1384 }
1385
1386 /*
1387  *
1388  * @param[in] fabric - fabric
1389  * @param[in] wwn_t - new fabric name
1390  *
1391  * @return - none
1392  */
1393 void
1394 bfa_fcs_fabric_set_fabric_name(struct bfa_fcs_fabric_s *fabric,
1395                                wwn_t fabric_name)
1396 {
1397         struct bfad_s *bfad = (struct bfad_s *)fabric->fcs->bfad;
1398         char    pwwn_ptr[BFA_STRING_32];
1399         char    fwwn_ptr[BFA_STRING_32];
1400
1401         bfa_trc(fabric->fcs, fabric_name);
1402
1403         if (fabric->fabric_name == 0) {
1404                 /*
1405                  * With BRCD switches, we don't get Fabric Name in FLOGI.
1406                  * Don't generate a fabric name change event in this case.
1407                  */
1408                 fabric->fabric_name = fabric_name;
1409         } else {
1410                 fabric->fabric_name = fabric_name;
1411                 wwn2str(pwwn_ptr, bfa_fcs_lport_get_pwwn(&fabric->bport));
1412                 wwn2str(fwwn_ptr,
1413                         bfa_fcs_lport_get_fabric_name(&fabric->bport));
1414                 BFA_LOG(KERN_WARNING, bfad, log_level,
1415                         "Base port WWN = %s Fabric WWN = %s\n",
1416                         pwwn_ptr, fwwn_ptr);
1417         }
1418 }
1419
1420 /*
1421  *      Returns FCS vf structure for a given vf_id.
1422  *
1423  *      param[in]       vf_id - VF_ID
1424  *
1425  *      return
1426  *      If lookup succeeds, retuns fcs vf object, otherwise returns NULL
1427  */
1428 bfa_fcs_vf_t   *
1429 bfa_fcs_vf_lookup(struct bfa_fcs_s *fcs, u16 vf_id)
1430 {
1431         bfa_trc(fcs, vf_id);
1432         if (vf_id == FC_VF_ID_NULL)
1433                 return &fcs->fabric;
1434
1435         return NULL;
1436 }
1437
1438 /*
1439  * BFA FCS PPORT ( physical port)
1440  */
1441 static void
1442 bfa_fcs_port_event_handler(void *cbarg, enum bfa_port_linkstate event)
1443 {
1444         struct bfa_fcs_s      *fcs = cbarg;
1445
1446         bfa_trc(fcs, event);
1447
1448         switch (event) {
1449         case BFA_PORT_LINKUP:
1450                 bfa_fcs_fabric_link_up(&fcs->fabric);
1451                 break;
1452
1453         case BFA_PORT_LINKDOWN:
1454                 bfa_fcs_fabric_link_down(&fcs->fabric);
1455                 break;
1456
1457         default:
1458                 bfa_assert(0);
1459         }
1460 }
1461
1462 void
1463 bfa_fcs_port_attach(struct bfa_fcs_s *fcs)
1464 {
1465         bfa_fcport_event_register(fcs->bfa, bfa_fcs_port_event_handler, fcs);
1466 }
1467
1468 /*
1469  * BFA FCS UF ( Unsolicited Frames)
1470  */
1471
1472 /*
1473  *              BFA callback for unsolicited frame receive handler.
1474  *
1475  * @param[in]           cbarg           callback arg for receive handler
1476  * @param[in]           uf              unsolicited frame descriptor
1477  *
1478  * @return None
1479  */
1480 static void
1481 bfa_fcs_uf_recv(void *cbarg, struct bfa_uf_s *uf)
1482 {
1483         struct bfa_fcs_s        *fcs = (struct bfa_fcs_s *) cbarg;
1484         struct fchs_s   *fchs = bfa_uf_get_frmbuf(uf);
1485         u16     len = bfa_uf_get_frmlen(uf);
1486         struct fc_vft_s *vft;
1487         struct bfa_fcs_fabric_s *fabric;
1488
1489         /*
1490          * check for VFT header
1491          */
1492         if (fchs->routing == FC_RTG_EXT_HDR &&
1493             fchs->cat_info == FC_CAT_VFT_HDR) {
1494                 bfa_stats(fcs, uf.tagged);
1495                 vft = bfa_uf_get_frmbuf(uf);
1496                 if (fcs->port_vfid == vft->vf_id)
1497                         fabric = &fcs->fabric;
1498                 else
1499                         fabric = bfa_fcs_vf_lookup(fcs, (u16) vft->vf_id);
1500
1501                 /*
1502                  * drop frame if vfid is unknown
1503                  */
1504                 if (!fabric) {
1505                         bfa_assert(0);
1506                         bfa_stats(fcs, uf.vfid_unknown);
1507                         bfa_uf_free(uf);
1508                         return;
1509                 }
1510
1511                 /*
1512                  * skip vft header
1513                  */
1514                 fchs = (struct fchs_s *) (vft + 1);
1515                 len -= sizeof(struct fc_vft_s);
1516
1517                 bfa_trc(fcs, vft->vf_id);
1518         } else {
1519                 bfa_stats(fcs, uf.untagged);
1520                 fabric = &fcs->fabric;
1521         }
1522
1523         bfa_trc(fcs, ((u32 *) fchs)[0]);
1524         bfa_trc(fcs, ((u32 *) fchs)[1]);
1525         bfa_trc(fcs, ((u32 *) fchs)[2]);
1526         bfa_trc(fcs, ((u32 *) fchs)[3]);
1527         bfa_trc(fcs, ((u32 *) fchs)[4]);
1528         bfa_trc(fcs, ((u32 *) fchs)[5]);
1529         bfa_trc(fcs, len);
1530
1531         bfa_fcs_fabric_uf_recv(fabric, fchs, len);
1532         bfa_uf_free(uf);
1533 }
1534
1535 void
1536 bfa_fcs_uf_attach(struct bfa_fcs_s *fcs)
1537 {
1538         bfa_uf_recv_register(fcs->bfa, bfa_fcs_uf_recv, fcs);
1539 }