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authorJing Huang <huangj@brocade.com>2009-09-23 20:46:15 -0400
committerJames Bottomley <James.Bottomley@suse.de>2009-10-02 10:47:40 -0400
commit7725ccfda59715ecf8f99e3b520a0b84cc2ea79e (patch)
treedf76910891c6b92bf23c06c84955bf600c9d7573 /drivers/scsi/bfa/fcpim.c
parent5415907af1f5ef80c95147bacbd321b0d4236dd5 (diff)
[SCSI] bfa: Brocade BFA FC SCSI driver
Add new driver for Brocade Hardware Signed-off-by: Jing Huang <huangj@brocade.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/bfa/fcpim.c')
-rw-r--r--drivers/scsi/bfa/fcpim.c844
1 files changed, 844 insertions, 0 deletions
diff --git a/drivers/scsi/bfa/fcpim.c b/drivers/scsi/bfa/fcpim.c
new file mode 100644
index 000000000000..8ce5d8934677
--- /dev/null
+++ b/drivers/scsi/bfa/fcpim.c
@@ -0,0 +1,844 @@
1/*
2 * Copyright (c) 2005-2009 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 * fcpim.c - FCP initiator mode i-t nexus state machine
20 */
21
22#include <bfa.h>
23#include <bfa_svc.h>
24#include "fcs_fcpim.h"
25#include "fcs_rport.h"
26#include "fcs_lport.h"
27#include "fcs_trcmod.h"
28#include "fcs_fcxp.h"
29#include "fcs.h"
30#include <fcs/bfa_fcs_fcpim.h>
31#include <fcb/bfa_fcb_fcpim.h>
32#include <aen/bfa_aen_itnim.h>
33
34BFA_TRC_FILE(FCS, FCPIM);
35
36/*
37 * forward declarations
38 */
39static void bfa_fcs_itnim_timeout(void *arg);
40static void bfa_fcs_itnim_free(struct bfa_fcs_itnim_s *itnim);
41static void bfa_fcs_itnim_send_prli(void *itnim_cbarg,
42 struct bfa_fcxp_s *fcxp_alloced);
43static void bfa_fcs_itnim_prli_response(void *fcsarg,
44 struct bfa_fcxp_s *fcxp,
45 void *cbarg,
46 bfa_status_t req_status,
47 u32 rsp_len,
48 u32 resid_len,
49 struct fchs_s *rsp_fchs);
50static void bfa_fcs_itnim_aen_post(struct bfa_fcs_itnim_s *itnim,
51 enum bfa_itnim_aen_event event);
52
53/**
54 * fcs_itnim_sm FCS itnim state machine events
55 */
56
57enum bfa_fcs_itnim_event {
58 BFA_FCS_ITNIM_SM_ONLINE = 1, /* rport online event */
59 BFA_FCS_ITNIM_SM_OFFLINE = 2, /* rport offline */
60 BFA_FCS_ITNIM_SM_FRMSENT = 3, /* prli frame is sent */
61 BFA_FCS_ITNIM_SM_RSP_OK = 4, /* good response */
62 BFA_FCS_ITNIM_SM_RSP_ERROR = 5, /* error response */
63 BFA_FCS_ITNIM_SM_TIMEOUT = 6, /* delay timeout */
64 BFA_FCS_ITNIM_SM_HCB_OFFLINE = 7, /* BFA online callback */
65 BFA_FCS_ITNIM_SM_HCB_ONLINE = 8, /* BFA offline callback */
66 BFA_FCS_ITNIM_SM_INITIATOR = 9, /* rport is initiator */
67 BFA_FCS_ITNIM_SM_DELETE = 10, /* delete event from rport */
68 BFA_FCS_ITNIM_SM_PRLO = 11, /* delete event from rport */
69};
70
71static void bfa_fcs_itnim_sm_offline(struct bfa_fcs_itnim_s *itnim,
72 enum bfa_fcs_itnim_event event);
73static void bfa_fcs_itnim_sm_prli_send(struct bfa_fcs_itnim_s *itnim,
74 enum bfa_fcs_itnim_event event);
75static void bfa_fcs_itnim_sm_prli(struct bfa_fcs_itnim_s *itnim,
76 enum bfa_fcs_itnim_event event);
77static void bfa_fcs_itnim_sm_prli_retry(struct bfa_fcs_itnim_s *itnim,
78 enum bfa_fcs_itnim_event event);
79static void bfa_fcs_itnim_sm_hcb_online(struct bfa_fcs_itnim_s *itnim,
80 enum bfa_fcs_itnim_event event);
81static void bfa_fcs_itnim_sm_online(struct bfa_fcs_itnim_s *itnim,
82 enum bfa_fcs_itnim_event event);
83static void bfa_fcs_itnim_sm_hcb_offline(struct bfa_fcs_itnim_s *itnim,
84 enum bfa_fcs_itnim_event event);
85static void bfa_fcs_itnim_sm_initiator(struct bfa_fcs_itnim_s *itnim,
86 enum bfa_fcs_itnim_event event);
87
88static struct bfa_sm_table_s itnim_sm_table[] = {
89 {BFA_SM(bfa_fcs_itnim_sm_offline), BFA_ITNIM_OFFLINE},
90 {BFA_SM(bfa_fcs_itnim_sm_prli_send), BFA_ITNIM_PRLI_SEND},
91 {BFA_SM(bfa_fcs_itnim_sm_prli), BFA_ITNIM_PRLI_SENT},
92 {BFA_SM(bfa_fcs_itnim_sm_prli_retry), BFA_ITNIM_PRLI_RETRY},
93 {BFA_SM(bfa_fcs_itnim_sm_hcb_online), BFA_ITNIM_HCB_ONLINE},
94 {BFA_SM(bfa_fcs_itnim_sm_online), BFA_ITNIM_ONLINE},
95 {BFA_SM(bfa_fcs_itnim_sm_hcb_offline), BFA_ITNIM_HCB_OFFLINE},
96 {BFA_SM(bfa_fcs_itnim_sm_initiator), BFA_ITNIM_INITIATIOR},
97};
98
99/**
100 * fcs_itnim_sm FCS itnim state machine
101 */
102
103static void
104bfa_fcs_itnim_sm_offline(struct bfa_fcs_itnim_s *itnim,
105 enum bfa_fcs_itnim_event event)
106{
107 bfa_trc(itnim->fcs, itnim->rport->pwwn);
108 bfa_trc(itnim->fcs, event);
109
110 switch (event) {
111 case BFA_FCS_ITNIM_SM_ONLINE:
112 bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_prli_send);
113 bfa_fcs_itnim_send_prli(itnim, NULL);
114 break;
115
116 case BFA_FCS_ITNIM_SM_OFFLINE:
117 bfa_fcs_rport_itnim_ack(itnim->rport);
118 break;
119
120 case BFA_FCS_ITNIM_SM_INITIATOR:
121 bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_initiator);
122 break;
123
124 case BFA_FCS_ITNIM_SM_DELETE:
125 bfa_fcs_itnim_free(itnim);
126 break;
127
128 default:
129 bfa_assert(0);
130 }
131
132}
133
134static void
135bfa_fcs_itnim_sm_prli_send(struct bfa_fcs_itnim_s *itnim,
136 enum bfa_fcs_itnim_event event)
137{
138 bfa_trc(itnim->fcs, itnim->rport->pwwn);
139 bfa_trc(itnim->fcs, event);
140
141 switch (event) {
142 case BFA_FCS_ITNIM_SM_FRMSENT:
143 bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_prli);
144 break;
145
146 case BFA_FCS_ITNIM_SM_INITIATOR:
147 bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_initiator);
148 bfa_fcxp_walloc_cancel(itnim->fcs->bfa, &itnim->fcxp_wqe);
149 break;
150
151 case BFA_FCS_ITNIM_SM_OFFLINE:
152 bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
153 bfa_fcxp_walloc_cancel(itnim->fcs->bfa, &itnim->fcxp_wqe);
154 bfa_fcs_rport_itnim_ack(itnim->rport);
155 break;
156
157 case BFA_FCS_ITNIM_SM_DELETE:
158 bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
159 bfa_fcxp_walloc_cancel(itnim->fcs->bfa, &itnim->fcxp_wqe);
160 bfa_fcs_itnim_free(itnim);
161 break;
162
163 default:
164 bfa_assert(0);
165 }
166}
167
168static void
169bfa_fcs_itnim_sm_prli(struct bfa_fcs_itnim_s *itnim,
170 enum bfa_fcs_itnim_event event)
171{
172 bfa_trc(itnim->fcs, itnim->rport->pwwn);
173 bfa_trc(itnim->fcs, event);
174
175 switch (event) {
176 case BFA_FCS_ITNIM_SM_RSP_OK:
177 bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_hcb_online);
178 bfa_itnim_online(itnim->bfa_itnim, itnim->seq_rec);
179 break;
180
181 case BFA_FCS_ITNIM_SM_RSP_ERROR:
182 bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_prli_retry);
183 bfa_timer_start(itnim->fcs->bfa, &itnim->timer,
184 bfa_fcs_itnim_timeout, itnim,
185 BFA_FCS_RETRY_TIMEOUT);
186 break;
187
188 case BFA_FCS_ITNIM_SM_OFFLINE:
189 bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
190 bfa_fcxp_discard(itnim->fcxp);
191 bfa_fcs_rport_itnim_ack(itnim->rport);
192 break;
193
194 case BFA_FCS_ITNIM_SM_INITIATOR:
195 bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_initiator);
196 /*
197 * dont discard fcxp. accept will reach same state
198 */
199 break;
200
201 case BFA_FCS_ITNIM_SM_DELETE:
202 bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
203 bfa_fcxp_discard(itnim->fcxp);
204 bfa_fcs_itnim_free(itnim);
205 break;
206
207 default:
208 bfa_assert(0);
209 }
210}
211
212static void
213bfa_fcs_itnim_sm_prli_retry(struct bfa_fcs_itnim_s *itnim,
214 enum bfa_fcs_itnim_event event)
215{
216 bfa_trc(itnim->fcs, itnim->rport->pwwn);
217 bfa_trc(itnim->fcs, event);
218
219 switch (event) {
220 case BFA_FCS_ITNIM_SM_TIMEOUT:
221 bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_prli_send);
222 bfa_fcs_itnim_send_prli(itnim, NULL);
223 break;
224
225 case BFA_FCS_ITNIM_SM_OFFLINE:
226 bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
227 bfa_timer_stop(&itnim->timer);
228 bfa_fcs_rport_itnim_ack(itnim->rport);
229 break;
230
231 case BFA_FCS_ITNIM_SM_INITIATOR:
232 bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_initiator);
233 bfa_timer_stop(&itnim->timer);
234 break;
235
236 case BFA_FCS_ITNIM_SM_DELETE:
237 bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
238 bfa_timer_stop(&itnim->timer);
239 bfa_fcs_itnim_free(itnim);
240 break;
241
242 default:
243 bfa_assert(0);
244 }
245}
246
247static void
248bfa_fcs_itnim_sm_hcb_online(struct bfa_fcs_itnim_s *itnim,
249 enum bfa_fcs_itnim_event event)
250{
251 bfa_trc(itnim->fcs, itnim->rport->pwwn);
252 bfa_trc(itnim->fcs, event);
253
254 switch (event) {
255 case BFA_FCS_ITNIM_SM_HCB_ONLINE:
256 bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_online);
257 bfa_fcb_itnim_online(itnim->itnim_drv);
258 bfa_fcs_itnim_aen_post(itnim, BFA_ITNIM_AEN_ONLINE);
259 break;
260
261 case BFA_FCS_ITNIM_SM_OFFLINE:
262 bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
263 bfa_itnim_offline(itnim->bfa_itnim);
264 bfa_fcs_rport_itnim_ack(itnim->rport);
265 break;
266
267 case BFA_FCS_ITNIM_SM_DELETE:
268 bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
269 bfa_fcs_itnim_free(itnim);
270 break;
271
272 default:
273 bfa_assert(0);
274 }
275}
276
277static void
278bfa_fcs_itnim_sm_online(struct bfa_fcs_itnim_s *itnim,
279 enum bfa_fcs_itnim_event event)
280{
281 bfa_trc(itnim->fcs, itnim->rport->pwwn);
282 bfa_trc(itnim->fcs, event);
283
284 switch (event) {
285 case BFA_FCS_ITNIM_SM_OFFLINE:
286 bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_hcb_offline);
287 bfa_fcb_itnim_offline(itnim->itnim_drv);
288 bfa_itnim_offline(itnim->bfa_itnim);
289 if (bfa_fcs_port_is_online(itnim->rport->port) == BFA_TRUE) {
290 bfa_fcs_itnim_aen_post(itnim, BFA_ITNIM_AEN_DISCONNECT);
291 } else {
292 bfa_fcs_itnim_aen_post(itnim, BFA_ITNIM_AEN_OFFLINE);
293 }
294 break;
295
296 case BFA_FCS_ITNIM_SM_DELETE:
297 bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
298 bfa_fcs_itnim_free(itnim);
299 break;
300
301 default:
302 bfa_assert(0);
303 }
304}
305
306static void
307bfa_fcs_itnim_sm_hcb_offline(struct bfa_fcs_itnim_s *itnim,
308 enum bfa_fcs_itnim_event event)
309{
310 bfa_trc(itnim->fcs, itnim->rport->pwwn);
311 bfa_trc(itnim->fcs, event);
312
313 switch (event) {
314 case BFA_FCS_ITNIM_SM_HCB_OFFLINE:
315 bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
316 bfa_fcs_rport_itnim_ack(itnim->rport);
317 break;
318
319 case BFA_FCS_ITNIM_SM_DELETE:
320 bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
321 bfa_fcs_itnim_free(itnim);
322 break;
323
324 default:
325 bfa_assert(0);
326 }
327}
328
329/*
330 * This state is set when a discovered rport is also in intiator mode.
331 * This ITN is marked as no_op and is not active and will not be truned into
332 * online state.
333 */
334static void
335bfa_fcs_itnim_sm_initiator(struct bfa_fcs_itnim_s *itnim,
336 enum bfa_fcs_itnim_event event)
337{
338 bfa_trc(itnim->fcs, itnim->rport->pwwn);
339 bfa_trc(itnim->fcs, event);
340
341 switch (event) {
342 case BFA_FCS_ITNIM_SM_OFFLINE:
343 bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
344 bfa_fcs_rport_itnim_ack(itnim->rport);
345 break;
346
347 case BFA_FCS_ITNIM_SM_RSP_ERROR:
348 case BFA_FCS_ITNIM_SM_ONLINE:
349 case BFA_FCS_ITNIM_SM_INITIATOR:
350 break;
351
352 case BFA_FCS_ITNIM_SM_DELETE:
353 bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
354 bfa_fcs_itnim_free(itnim);
355 break;
356
357 default:
358 bfa_assert(0);
359 }
360}
361
362
363
364/**
365 * itnim_private FCS ITNIM private interfaces
366 */
367
368static void
369bfa_fcs_itnim_aen_post(struct bfa_fcs_itnim_s *itnim,
370 enum bfa_itnim_aen_event event)
371{
372 struct bfa_fcs_rport_s *rport = itnim->rport;
373 union bfa_aen_data_u aen_data;
374 struct bfa_log_mod_s *logmod = rport->fcs->logm;
375 wwn_t lpwwn = bfa_fcs_port_get_pwwn(rport->port);
376 wwn_t rpwwn = rport->pwwn;
377 char lpwwn_ptr[BFA_STRING_32];
378 char rpwwn_ptr[BFA_STRING_32];
379
380 /*
381 * Don't post events for well known addresses
382 */
383 if (BFA_FCS_PID_IS_WKA(rport->pid))
384 return;
385
386 wwn2str(lpwwn_ptr, lpwwn);
387 wwn2str(rpwwn_ptr, rpwwn);
388
389 switch (event) {
390 case BFA_ITNIM_AEN_ONLINE:
391 bfa_log(logmod, BFA_AEN_ITNIM_ONLINE, rpwwn_ptr, lpwwn_ptr);
392 break;
393 case BFA_ITNIM_AEN_OFFLINE:
394 bfa_log(logmod, BFA_AEN_ITNIM_OFFLINE, rpwwn_ptr, lpwwn_ptr);
395 break;
396 case BFA_ITNIM_AEN_DISCONNECT:
397 bfa_log(logmod, BFA_AEN_ITNIM_DISCONNECT, rpwwn_ptr, lpwwn_ptr);
398 break;
399 default:
400 break;
401 }
402
403 aen_data.itnim.vf_id = rport->port->fabric->vf_id;
404 aen_data.itnim.ppwwn =
405 bfa_fcs_port_get_pwwn(bfa_fcs_get_base_port(itnim->fcs));
406 aen_data.itnim.lpwwn = lpwwn;
407 aen_data.itnim.rpwwn = rpwwn;
408}
409
410static void
411bfa_fcs_itnim_send_prli(void *itnim_cbarg, struct bfa_fcxp_s *fcxp_alloced)
412{
413 struct bfa_fcs_itnim_s *itnim = itnim_cbarg;
414 struct bfa_fcs_rport_s *rport = itnim->rport;
415 struct bfa_fcs_port_s *port = rport->port;
416 struct fchs_s fchs;
417 struct bfa_fcxp_s *fcxp;
418 int len;
419
420 bfa_trc(itnim->fcs, itnim->rport->pwwn);
421
422 fcxp = fcxp_alloced ? fcxp_alloced : bfa_fcs_fcxp_alloc(port->fcs);
423 if (!fcxp) {
424 itnim->stats.fcxp_alloc_wait++;
425 bfa_fcxp_alloc_wait(port->fcs->bfa, &itnim->fcxp_wqe,
426 bfa_fcs_itnim_send_prli, itnim);
427 return;
428 }
429 itnim->fcxp = fcxp;
430
431 len = fc_prli_build(&fchs, bfa_fcxp_get_reqbuf(fcxp), itnim->rport->pid,
432 bfa_fcs_port_get_fcid(port), 0);
433
434 bfa_fcxp_send(fcxp, rport->bfa_rport, port->fabric->vf_id, port->lp_tag,
435 BFA_FALSE, FC_CLASS_3, len, &fchs,
436 bfa_fcs_itnim_prli_response, (void *)itnim, FC_MAX_PDUSZ,
437 FC_RA_TOV);
438
439 itnim->stats.prli_sent++;
440 bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_FRMSENT);
441}
442
443static void
444bfa_fcs_itnim_prli_response(void *fcsarg, struct bfa_fcxp_s *fcxp, void *cbarg,
445 bfa_status_t req_status, u32 rsp_len,
446 u32 resid_len, struct fchs_s *rsp_fchs)
447{
448 struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *)cbarg;
449 struct fc_els_cmd_s *els_cmd;
450 struct fc_prli_s *prli_resp;
451 struct fc_ls_rjt_s *ls_rjt;
452 struct fc_prli_params_s *sparams;
453
454 bfa_trc(itnim->fcs, req_status);
455
456 /*
457 * Sanity Checks
458 */
459 if (req_status != BFA_STATUS_OK) {
460 itnim->stats.prli_rsp_err++;
461 bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_RSP_ERROR);
462 return;
463 }
464
465 els_cmd = (struct fc_els_cmd_s *) BFA_FCXP_RSP_PLD(fcxp);
466
467 if (els_cmd->els_code == FC_ELS_ACC) {
468 prli_resp = (struct fc_prli_s *) els_cmd;
469
470 if (fc_prli_rsp_parse(prli_resp, rsp_len) != FC_PARSE_OK) {
471 bfa_trc(itnim->fcs, rsp_len);
472 /*
473 * Check if this r-port is also in Initiator mode.
474 * If so, we need to set this ITN as a no-op.
475 */
476 if (prli_resp->parampage.servparams.initiator) {
477 bfa_trc(itnim->fcs, prli_resp->parampage.type);
478 itnim->rport->scsi_function =
479 BFA_RPORT_INITIATOR;
480 itnim->stats.prli_rsp_acc++;
481 bfa_sm_send_event(itnim,
482 BFA_FCS_ITNIM_SM_INITIATOR);
483 return;
484 }
485
486 itnim->stats.prli_rsp_parse_err++;
487 return;
488 }
489 itnim->rport->scsi_function = BFA_RPORT_TARGET;
490
491 sparams = &prli_resp->parampage.servparams;
492 itnim->seq_rec = sparams->retry;
493 itnim->rec_support = sparams->rec_support;
494 itnim->task_retry_id = sparams->task_retry_id;
495 itnim->conf_comp = sparams->confirm;
496
497 itnim->stats.prli_rsp_acc++;
498 bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_RSP_OK);
499 } else {
500 ls_rjt = (struct fc_ls_rjt_s *) BFA_FCXP_RSP_PLD(fcxp);
501
502 bfa_trc(itnim->fcs, ls_rjt->reason_code);
503 bfa_trc(itnim->fcs, ls_rjt->reason_code_expl);
504
505 itnim->stats.prli_rsp_rjt++;
506 bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_RSP_ERROR);
507 }
508}
509
510static void
511bfa_fcs_itnim_timeout(void *arg)
512{
513 struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *)arg;
514
515 itnim->stats.timeout++;
516 bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_TIMEOUT);
517}
518
519static void
520bfa_fcs_itnim_free(struct bfa_fcs_itnim_s *itnim)
521{
522 bfa_itnim_delete(itnim->bfa_itnim);
523 bfa_fcb_itnim_free(itnim->fcs->bfad, itnim->itnim_drv);
524}
525
526
527
528/**
529 * itnim_public FCS ITNIM public interfaces
530 */
531
532/**
533 * Called by rport when a new rport is created.
534 *
535 * @param[in] rport - remote port.
536 */
537struct bfa_fcs_itnim_s *
538bfa_fcs_itnim_create(struct bfa_fcs_rport_s *rport)
539{
540 struct bfa_fcs_port_s *port = rport->port;
541 struct bfa_fcs_itnim_s *itnim;
542 struct bfad_itnim_s *itnim_drv;
543 struct bfa_itnim_s *bfa_itnim;
544
545 /*
546 * call bfad to allocate the itnim
547 */
548 bfa_fcb_itnim_alloc(port->fcs->bfad, &itnim, &itnim_drv);
549 if (itnim == NULL) {
550 bfa_trc(port->fcs, rport->pwwn);
551 return NULL;
552 }
553
554 /*
555 * Initialize itnim
556 */
557 itnim->rport = rport;
558 itnim->fcs = rport->fcs;
559 itnim->itnim_drv = itnim_drv;
560
561 /*
562 * call BFA to create the itnim
563 */
564 bfa_itnim = bfa_itnim_create(port->fcs->bfa, rport->bfa_rport, itnim);
565
566 if (bfa_itnim == NULL) {
567 bfa_trc(port->fcs, rport->pwwn);
568 bfa_fcb_itnim_free(port->fcs->bfad, itnim_drv);
569 bfa_assert(0);
570 return NULL;
571 }
572
573 itnim->bfa_itnim = bfa_itnim;
574 itnim->seq_rec = BFA_FALSE;
575 itnim->rec_support = BFA_FALSE;
576 itnim->conf_comp = BFA_FALSE;
577 itnim->task_retry_id = BFA_FALSE;
578
579 /*
580 * Set State machine
581 */
582 bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
583
584 return itnim;
585}
586
587/**
588 * Called by rport to delete the instance of FCPIM.
589 *
590 * @param[in] rport - remote port.
591 */
592void
593bfa_fcs_itnim_delete(struct bfa_fcs_itnim_s *itnim)
594{
595 bfa_trc(itnim->fcs, itnim->rport->pid);
596 bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_DELETE);
597}
598
599/**
600 * Notification from rport that PLOGI is complete to initiate FC-4 session.
601 */
602void
603bfa_fcs_itnim_rport_online(struct bfa_fcs_itnim_s *itnim)
604{
605 itnim->stats.onlines++;
606
607 if (!BFA_FCS_PID_IS_WKA(itnim->rport->pid)) {
608 bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_ONLINE);
609 } else {
610 /*
611 * For well known addresses, we set the itnim to initiator
612 * state
613 */
614 itnim->stats.initiator++;
615 bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_INITIATOR);
616 }
617}
618
619/**
620 * Called by rport to handle a remote device offline.
621 */
622void
623bfa_fcs_itnim_rport_offline(struct bfa_fcs_itnim_s *itnim)
624{
625 itnim->stats.offlines++;
626 bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_OFFLINE);
627}
628
629/**
630 * Called by rport when remote port is known to be an initiator from
631 * PRLI received.
632 */
633void
634bfa_fcs_itnim_is_initiator(struct bfa_fcs_itnim_s *itnim)
635{
636 bfa_trc(itnim->fcs, itnim->rport->pid);
637 itnim->stats.initiator++;
638 bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_INITIATOR);
639}
640
641/**
642 * Called by rport to check if the itnim is online.
643 */
644bfa_status_t
645bfa_fcs_itnim_get_online_state(struct bfa_fcs_itnim_s *itnim)
646{
647 bfa_trc(itnim->fcs, itnim->rport->pid);
648 switch (bfa_sm_to_state(itnim_sm_table, itnim->sm)) {
649 case BFA_ITNIM_ONLINE:
650 case BFA_ITNIM_INITIATIOR:
651 return BFA_STATUS_OK;
652
653 default:
654 return BFA_STATUS_NO_FCPIM_NEXUS;
655
656 }
657}
658
659/**
660 * BFA completion callback for bfa_itnim_online().
661 */
662void
663bfa_cb_itnim_online(void *cbarg)
664{
665 struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *)cbarg;
666
667 bfa_trc(itnim->fcs, itnim->rport->pwwn);
668 bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_HCB_ONLINE);
669}
670
671/**
672 * BFA completion callback for bfa_itnim_offline().
673 */
674void
675bfa_cb_itnim_offline(void *cb_arg)
676{
677 struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *)cb_arg;
678
679 bfa_trc(itnim->fcs, itnim->rport->pwwn);
680 bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_HCB_OFFLINE);
681}
682
683/**
684 * Mark the beginning of PATH TOV handling. IO completion callbacks
685 * are still pending.
686 */
687void
688bfa_cb_itnim_tov_begin(void *cb_arg)
689{
690 struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *)cb_arg;
691
692 bfa_trc(itnim->fcs, itnim->rport->pwwn);
693 bfa_fcb_itnim_tov_begin(itnim->itnim_drv);
694}
695
696/**
697 * Mark the end of PATH TOV handling. All pending IOs are already cleaned up.
698 */
699void
700bfa_cb_itnim_tov(void *cb_arg)
701{
702 struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *)cb_arg;
703
704 bfa_trc(itnim->fcs, itnim->rport->pwwn);
705 bfa_fcb_itnim_tov(itnim->itnim_drv);
706}
707
708/**
709 * BFA notification to FCS/driver for second level error recovery.
710 *
711 * Atleast one I/O request has timedout and target is unresponsive to
712 * repeated abort requests. Second level error recovery should be initiated
713 * by starting implicit logout and recovery procedures.
714 */
715void
716bfa_cb_itnim_sler(void *cb_arg)
717{
718 struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *)cb_arg;
719
720 itnim->stats.sler++;
721 bfa_trc(itnim->fcs, itnim->rport->pwwn);
722 bfa_fcs_rport_logo_imp(itnim->rport);
723}
724
725struct bfa_fcs_itnim_s *
726bfa_fcs_itnim_lookup(struct bfa_fcs_port_s *port, wwn_t rpwwn)
727{
728 struct bfa_fcs_rport_s *rport;
729 rport = bfa_fcs_rport_lookup(port, rpwwn);
730
731 if (!rport)
732 return NULL;
733
734 bfa_assert(rport->itnim != NULL);
735 return (rport->itnim);
736}
737
738bfa_status_t
739bfa_fcs_itnim_attr_get(struct bfa_fcs_port_s *port, wwn_t rpwwn,
740 struct bfa_itnim_attr_s *attr)
741{
742 struct bfa_fcs_itnim_s *itnim = NULL;
743
744 itnim = bfa_fcs_itnim_lookup(port, rpwwn);
745
746 if (itnim == NULL)
747 return BFA_STATUS_NO_FCPIM_NEXUS;
748
749 attr->state = bfa_sm_to_state(itnim_sm_table, itnim->sm);
750 attr->retry = itnim->seq_rec;
751 attr->rec_support = itnim->rec_support;
752 attr->conf_comp = itnim->conf_comp;
753 attr->task_retry_id = itnim->task_retry_id;
754
755 return BFA_STATUS_OK;
756}
757
758bfa_status_t
759bfa_fcs_itnim_stats_get(struct bfa_fcs_port_s *port, wwn_t rpwwn,
760 struct bfa_itnim_stats_s *stats)
761{
762 struct bfa_fcs_itnim_s *itnim = NULL;
763
764 bfa_assert(port != NULL);
765
766 itnim = bfa_fcs_itnim_lookup(port, rpwwn);
767
768 if (itnim == NULL)
769 return BFA_STATUS_NO_FCPIM_NEXUS;
770
771 bfa_os_memcpy(stats, &itnim->stats, sizeof(struct bfa_itnim_stats_s));
772
773 return BFA_STATUS_OK;
774}
775
776bfa_status_t
777bfa_fcs_itnim_stats_clear(struct bfa_fcs_port_s *port, wwn_t rpwwn)
778{
779 struct bfa_fcs_itnim_s *itnim = NULL;
780
781 bfa_assert(port != NULL);
782
783 itnim = bfa_fcs_itnim_lookup(port, rpwwn);
784
785 if (itnim == NULL)
786 return BFA_STATUS_NO_FCPIM_NEXUS;
787
788 bfa_os_memset(&itnim->stats, 0, sizeof(struct bfa_itnim_stats_s));
789 return BFA_STATUS_OK;
790}
791
792void
793bfa_fcs_fcpim_uf_recv(struct bfa_fcs_itnim_s *itnim, struct fchs_s *fchs,
794 u16 len)
795{
796 struct fc_els_cmd_s *els_cmd;
797
798 bfa_trc(itnim->fcs, fchs->type);
799
800 if (fchs->type != FC_TYPE_ELS)
801 return;
802
803 els_cmd = (struct fc_els_cmd_s *) (fchs + 1);
804
805 bfa_trc(itnim->fcs, els_cmd->els_code);
806
807 switch (els_cmd->els_code) {
808 case FC_ELS_PRLO:
809 /* bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_PRLO); */
810 break;
811
812 default:
813 bfa_assert(0);
814 }
815}
816
817void
818bfa_fcs_itnim_pause(struct bfa_fcs_itnim_s *itnim)
819{
820}
821
822void
823bfa_fcs_itnim_resume(struct bfa_fcs_itnim_s *itnim)
824{
825}
826
827/**
828 * Module initialization
829 */
830void
831bfa_fcs_fcpim_modinit(struct bfa_fcs_s *fcs)
832{
833}
834
835/**
836 * Module cleanup
837 */
838void
839bfa_fcs_fcpim_modexit(struct bfa_fcs_s *fcs)
840{
841 bfa_fcs_modexit_comp(fcs);
842}
843
844
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-30 13:34:33 -0400