1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (c) 2005-2014 Brocade Communications Systems, Inc.
4  * Copyright (c) 2014- QLogic Corporation.
8  * Linux driver for QLogic BR-series Fibre Channel Host Bus Adapter.
12  *  fcpim.c - FCP initiator mode i-t nexus state machine
91 	bfa_trc(itnim->fcs, itnim->rport->pwwn);  in bfa_fcs_itnim_sm_offline()
92 	bfa_trc(itnim->fcs, event);  in bfa_fcs_itnim_sm_offline()
97 		itnim->prli_retries = 0;  in bfa_fcs_itnim_sm_offline()
102 		bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_OFFLINE);  in bfa_fcs_itnim_sm_offline()
114 		bfa_sm_fault(itnim->fcs, event);  in bfa_fcs_itnim_sm_offline()
123 	bfa_trc(itnim->fcs, itnim->rport->pwwn);  in bfa_fcs_itnim_sm_prli_send()
124 	bfa_trc(itnim->fcs, event);  in bfa_fcs_itnim_sm_prli_send()
133 		bfa_fcxp_walloc_cancel(itnim->fcs->bfa, &itnim->fcxp_wqe);  in bfa_fcs_itnim_sm_prli_send()
134 		bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_FCS_ONLINE);  in bfa_fcs_itnim_sm_prli_send()
139 		bfa_fcxp_walloc_cancel(itnim->fcs->bfa, &itnim->fcxp_wqe);  in bfa_fcs_itnim_sm_prli_send()
140 		bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_OFFLINE);  in bfa_fcs_itnim_sm_prli_send()
145 		bfa_fcxp_walloc_cancel(itnim->fcs->bfa, &itnim->fcxp_wqe);  in bfa_fcs_itnim_sm_prli_send()
150 		bfa_sm_fault(itnim->fcs, event);  in bfa_fcs_itnim_sm_prli_send()
158 	bfa_trc(itnim->fcs, itnim->rport->pwwn);  in bfa_fcs_itnim_sm_prli()
159 	bfa_trc(itnim->fcs, event);  in bfa_fcs_itnim_sm_prli()
163 		if (itnim->rport->scsi_function == BFA_RPORT_INITIATOR)  in bfa_fcs_itnim_sm_prli()
169 		bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_FCS_ONLINE);  in bfa_fcs_itnim_sm_prli()
174 		bfa_timer_start(itnim->fcs->bfa, &itnim->timer,  in bfa_fcs_itnim_sm_prli()
185 		bfa_fcxp_discard(itnim->fcxp);  in bfa_fcs_itnim_sm_prli()
186 		bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_OFFLINE);  in bfa_fcs_itnim_sm_prli()
191 		bfa_fcxp_discard(itnim->fcxp);  in bfa_fcs_itnim_sm_prli()
192 		bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_FCS_ONLINE);  in bfa_fcs_itnim_sm_prli()
197 		bfa_fcxp_discard(itnim->fcxp);  in bfa_fcs_itnim_sm_prli()
202 		bfa_sm_fault(itnim->fcs, event);  in bfa_fcs_itnim_sm_prli()
210 	bfa_trc(itnim->fcs, itnim->rport->pwwn);  in bfa_fcs_itnim_sm_hal_rport_online()
211 	bfa_trc(itnim->fcs, event);  in bfa_fcs_itnim_sm_hal_rport_online()
215 		if (!itnim->bfa_itnim)  in bfa_fcs_itnim_sm_hal_rport_online()
216 			itnim->bfa_itnim = bfa_itnim_create(itnim->fcs->bfa,  in bfa_fcs_itnim_sm_hal_rport_online()
217 					itnim->rport->bfa_rport, itnim);  in bfa_fcs_itnim_sm_hal_rport_online()
219 		if (itnim->bfa_itnim) {  in bfa_fcs_itnim_sm_hal_rport_online()
221 			bfa_itnim_online(itnim->bfa_itnim, itnim->seq_rec);  in bfa_fcs_itnim_sm_hal_rport_online()
224 			bfa_sm_send_event(itnim->rport, RPSM_EVENT_DELETE);  in bfa_fcs_itnim_sm_hal_rport_online()
231 		bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_OFFLINE);  in bfa_fcs_itnim_sm_hal_rport_online()
240 		bfa_sm_fault(itnim->fcs, event);  in bfa_fcs_itnim_sm_hal_rport_online()
248 	bfa_trc(itnim->fcs, itnim->rport->pwwn);  in bfa_fcs_itnim_sm_prli_retry()
249 	bfa_trc(itnim->fcs, event);  in bfa_fcs_itnim_sm_prli_retry()
253 		if (itnim->prli_retries < BFA_FCS_RPORT_MAX_RETRIES) {  in bfa_fcs_itnim_sm_prli_retry()
254 			itnim->prli_retries++;  in bfa_fcs_itnim_sm_prli_retry()
255 			bfa_trc(itnim->fcs, itnim->prli_retries);  in bfa_fcs_itnim_sm_prli_retry()
261 			bfa_sm_send_event(itnim->rport, RPSM_EVENT_LOGO_IMP);  in bfa_fcs_itnim_sm_prli_retry()
268 		bfa_timer_stop(&itnim->timer);  in bfa_fcs_itnim_sm_prli_retry()
269 		bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_OFFLINE);  in bfa_fcs_itnim_sm_prli_retry()
274 		bfa_timer_stop(&itnim->timer);  in bfa_fcs_itnim_sm_prli_retry()
275 		bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_FCS_ONLINE);  in bfa_fcs_itnim_sm_prli_retry()
280 		bfa_timer_stop(&itnim->timer);  in bfa_fcs_itnim_sm_prli_retry()
285 		bfa_sm_fault(itnim->fcs, event);  in bfa_fcs_itnim_sm_prli_retry()
293 	struct bfad_s *bfad = (struct bfad_s *)itnim->fcs->bfad;  in bfa_fcs_itnim_sm_hcb_online()
297 	bfa_trc(itnim->fcs, itnim->rport->pwwn);  in bfa_fcs_itnim_sm_hcb_online()
298 	bfa_trc(itnim->fcs, event);  in bfa_fcs_itnim_sm_hcb_online()
303 		bfa_fcb_itnim_online(itnim->itnim_drv);  in bfa_fcs_itnim_sm_hcb_online()
304 		wwn2str(lpwwn_buf, bfa_fcs_lport_get_pwwn(itnim->rport->port));  in bfa_fcs_itnim_sm_hcb_online()
305 		wwn2str(rpwwn_buf, itnim->rport->pwwn);  in bfa_fcs_itnim_sm_hcb_online()
314 		bfa_itnim_offline(itnim->bfa_itnim);  in bfa_fcs_itnim_sm_hcb_online()
323 		bfa_sm_fault(itnim->fcs, event);  in bfa_fcs_itnim_sm_hcb_online()
331 	struct bfad_s *bfad = (struct bfad_s *)itnim->fcs->bfad;  in bfa_fcs_itnim_sm_online()
335 	bfa_trc(itnim->fcs, itnim->rport->pwwn);  in bfa_fcs_itnim_sm_online()
336 	bfa_trc(itnim->fcs, event);  in bfa_fcs_itnim_sm_online()
341 		bfa_fcb_itnim_offline(itnim->itnim_drv);  in bfa_fcs_itnim_sm_online()
342 		bfa_itnim_offline(itnim->bfa_itnim);  in bfa_fcs_itnim_sm_online()
343 		wwn2str(lpwwn_buf, bfa_fcs_lport_get_pwwn(itnim->rport->port));  in bfa_fcs_itnim_sm_online()
344 		wwn2str(rpwwn_buf, itnim->rport->pwwn);  in bfa_fcs_itnim_sm_online()
345 		if (bfa_fcs_lport_is_online(itnim->rport->port) == BFA_TRUE) {  in bfa_fcs_itnim_sm_online()
364 		bfa_sm_fault(itnim->fcs, event);  in bfa_fcs_itnim_sm_online()
372 	bfa_trc(itnim->fcs, itnim->rport->pwwn);  in bfa_fcs_itnim_sm_hcb_offline()
373 	bfa_trc(itnim->fcs, event);  in bfa_fcs_itnim_sm_hcb_offline()
378 		bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_OFFLINE);  in bfa_fcs_itnim_sm_hcb_offline()
387 		bfa_sm_fault(itnim->fcs, event);  in bfa_fcs_itnim_sm_hcb_offline()
400 	bfa_trc(itnim->fcs, itnim->rport->pwwn);  in bfa_fcs_itnim_sm_initiator()
401 	bfa_trc(itnim->fcs, event);  in bfa_fcs_itnim_sm_initiator()
406 		bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_OFFLINE);  in bfa_fcs_itnim_sm_initiator()
413 		bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_FCS_ONLINE);  in bfa_fcs_itnim_sm_initiator()
426 		bfa_sm_fault(itnim->fcs, event);  in bfa_fcs_itnim_sm_initiator()
434 	struct bfa_fcs_rport_s *rport = itnim->rport;  in bfa_fcs_itnim_aen_post()
435 	struct bfad_s *bfad = (struct bfad_s *)itnim->fcs->bfad;  in bfa_fcs_itnim_aen_post()
439 	if (BFA_FCS_PID_IS_WKA(rport->pid))  in bfa_fcs_itnim_aen_post()
446 	aen_entry->aen_data.itnim.vf_id = rport->port->fabric->vf_id;  in bfa_fcs_itnim_aen_post()
447 	aen_entry->aen_data.itnim.ppwwn = bfa_fcs_lport_get_pwwn(  in bfa_fcs_itnim_aen_post()
448 					bfa_fcs_get_base_port(itnim->fcs));  in bfa_fcs_itnim_aen_post()
449 	aen_entry->aen_data.itnim.lpwwn = bfa_fcs_lport_get_pwwn(rport->port);  in bfa_fcs_itnim_aen_post()
450 	aen_entry->aen_data.itnim.rpwwn = rport->pwwn;  in bfa_fcs_itnim_aen_post()
453 	bfad_im_post_vendor_event(aen_entry, bfad, ++rport->fcs->fcs_aen_seq,  in bfa_fcs_itnim_aen_post()
461 	struct bfa_fcs_rport_s *rport = itnim->rport;  in bfa_fcs_itnim_send_prli()
462 	struct bfa_fcs_lport_s *port = rport->port;  in bfa_fcs_itnim_send_prli()
467 	bfa_trc(itnim->fcs, itnim->rport->pwwn);  in bfa_fcs_itnim_send_prli()
470 	       bfa_fcs_fcxp_alloc(port->fcs, BFA_TRUE);  in bfa_fcs_itnim_send_prli()
472 		itnim->stats.fcxp_alloc_wait++;  in bfa_fcs_itnim_send_prli()
473 		bfa_fcs_fcxp_alloc_wait(port->fcs->bfa, &itnim->fcxp_wqe,  in bfa_fcs_itnim_send_prli()
477 	itnim->fcxp = fcxp;  in bfa_fcs_itnim_send_prli()
480 			    itnim->rport->pid, bfa_fcs_lport_get_fcid(port), 0);  in bfa_fcs_itnim_send_prli()
482 	bfa_fcxp_send(fcxp, rport->bfa_rport, port->fabric->vf_id, port->lp_tag,  in bfa_fcs_itnim_send_prli()
487 	itnim->stats.prli_sent++;  in bfa_fcs_itnim_send_prli()
502 	bfa_trc(itnim->fcs, req_status);  in bfa_fcs_itnim_prli_response()
508 		itnim->stats.prli_rsp_err++;  in bfa_fcs_itnim_prli_response()
515 	if (els_cmd->els_code == FC_ELS_ACC) {  in bfa_fcs_itnim_prli_response()
519 			bfa_trc(itnim->fcs, rsp_len);  in bfa_fcs_itnim_prli_response()
521 			 * Check if this  r-port is also in Initiator mode.  in bfa_fcs_itnim_prli_response()
522 			 * If so, we need to set this ITN as a no-op.  in bfa_fcs_itnim_prli_response()
524 			if (prli_resp->parampage.servparams.initiator) {  in bfa_fcs_itnim_prli_response()
525 				bfa_trc(itnim->fcs, prli_resp->parampage.type);  in bfa_fcs_itnim_prli_response()
526 				itnim->rport->scsi_function =  in bfa_fcs_itnim_prli_response()
528 				itnim->stats.prli_rsp_acc++;  in bfa_fcs_itnim_prli_response()
529 				itnim->stats.initiator++;  in bfa_fcs_itnim_prli_response()
535 			itnim->stats.prli_rsp_parse_err++;  in bfa_fcs_itnim_prli_response()
538 		itnim->rport->scsi_function = BFA_RPORT_TARGET;  in bfa_fcs_itnim_prli_response()
540 		sparams = &prli_resp->parampage.servparams;  in bfa_fcs_itnim_prli_response()
541 		itnim->seq_rec	     = sparams->retry;  in bfa_fcs_itnim_prli_response()
542 		itnim->rec_support   = sparams->rec_support;  in bfa_fcs_itnim_prli_response()
543 		itnim->task_retry_id = sparams->task_retry_id;  in bfa_fcs_itnim_prli_response()
544 		itnim->conf_comp     = sparams->confirm;  in bfa_fcs_itnim_prli_response()
546 		itnim->stats.prli_rsp_acc++;  in bfa_fcs_itnim_prli_response()
551 		bfa_trc(itnim->fcs, ls_rjt->reason_code);  in bfa_fcs_itnim_prli_response()
552 		bfa_trc(itnim->fcs, ls_rjt->reason_code_expl);  in bfa_fcs_itnim_prli_response()
554 		itnim->stats.prli_rsp_rjt++;  in bfa_fcs_itnim_prli_response()
555 		if (ls_rjt->reason_code == FC_LS_RJT_RSN_CMD_NOT_SUPP) {  in bfa_fcs_itnim_prli_response()
568 	itnim->stats.timeout++;  in bfa_fcs_itnim_timeout()
575 	if (itnim->bfa_itnim) {  in bfa_fcs_itnim_free()
576 		bfa_itnim_delete(itnim->bfa_itnim);  in bfa_fcs_itnim_free()
577 		itnim->bfa_itnim = NULL;  in bfa_fcs_itnim_free()
580 	bfa_fcb_itnim_free(itnim->fcs->bfad, itnim->itnim_drv);  in bfa_fcs_itnim_free()
592  * @param[in] rport	-  remote port.
597 	struct bfa_fcs_lport_s *port = rport->port;  in bfa_fcs_itnim_create()
605 	ret = bfa_fcb_itnim_alloc(port->fcs->bfad, &itnim, &itnim_drv);  in bfa_fcs_itnim_create()
607 		bfa_trc(port->fcs, rport->pwwn);  in bfa_fcs_itnim_create()
614 	itnim->rport = rport;  in bfa_fcs_itnim_create()
615 	itnim->fcs = rport->fcs;  in bfa_fcs_itnim_create()
616 	itnim->itnim_drv = itnim_drv;  in bfa_fcs_itnim_create()
618 	itnim->bfa_itnim     = NULL;  in bfa_fcs_itnim_create()
619 	itnim->seq_rec	     = BFA_FALSE;  in bfa_fcs_itnim_create()
620 	itnim->rec_support   = BFA_FALSE;  in bfa_fcs_itnim_create()
621 	itnim->conf_comp     = BFA_FALSE;  in bfa_fcs_itnim_create()
622 	itnim->task_retry_id = BFA_FALSE;  in bfa_fcs_itnim_create()
635  * @param[in] rport	-  remote port.
640 	bfa_trc(itnim->fcs, itnim->rport->pid);  in bfa_fcs_itnim_delete()
645  * Notification from rport that PLOGI is complete to initiate FC-4 session.
650 	itnim->stats.onlines++;  in bfa_fcs_itnim_brp_online()
652 	if (!BFA_FCS_PID_IS_WKA(itnim->rport->pid))  in bfa_fcs_itnim_brp_online()
657  * Called by rport to handle a remote device offline.
662 	itnim->stats.offlines++;  in bfa_fcs_itnim_rport_offline()
667  * Called by rport when remote port is known to be an initiator from
673 	bfa_trc(itnim->fcs, itnim->rport->pid);  in bfa_fcs_itnim_is_initiator()
674 	itnim->stats.initiator++;  in bfa_fcs_itnim_is_initiator()
684 	bfa_trc(itnim->fcs, itnim->rport->pid);  in bfa_fcs_itnim_get_online_state()
685 	switch (bfa_fcs_itnim_sm_to_state(itnim_sm_table, itnim->sm)) {  in bfa_fcs_itnim_get_online_state()
703 	bfa_trc(itnim->fcs, itnim->rport->pwwn);  in bfa_cb_itnim_online()
715 	bfa_trc(itnim->fcs, itnim->rport->pwwn);  in bfa_cb_itnim_offline()
728 	bfa_trc(itnim->fcs, itnim->rport->pwwn);  in bfa_cb_itnim_tov_begin()
738 	struct bfad_itnim_s *itnim_drv = itnim->itnim_drv;  in bfa_cb_itnim_tov()
740 	bfa_trc(itnim->fcs, itnim->rport->pwwn);  in bfa_cb_itnim_tov()
741 	itnim_drv->state = ITNIM_STATE_TIMEOUT;  in bfa_cb_itnim_tov()
756 	itnim->stats.sler++;  in bfa_cb_itnim_sler()
757 	bfa_trc(itnim->fcs, itnim->rport->pwwn);  in bfa_cb_itnim_sler()
758 	bfa_sm_send_event(itnim->rport, RPSM_EVENT_LOGO_IMP);  in bfa_cb_itnim_sler()
770 	WARN_ON(rport->itnim == NULL);  in bfa_fcs_itnim_lookup()
771 	return rport->itnim;  in bfa_fcs_itnim_lookup()
785 	attr->state	    = bfa_fcs_itnim_sm_to_state(itnim_sm_table, itnim->sm);  in bfa_fcs_itnim_attr_get()
786 	attr->retry	    = itnim->seq_rec;  in bfa_fcs_itnim_attr_get()
787 	attr->rec_support   = itnim->rec_support;  in bfa_fcs_itnim_attr_get()
788 	attr->conf_comp	    = itnim->conf_comp;  in bfa_fcs_itnim_attr_get()
789 	attr->task_retry_id = itnim->task_retry_id;  in bfa_fcs_itnim_attr_get()
806 	memcpy(stats, &itnim->stats, sizeof(struct bfa_itnim_stats_s));  in bfa_fcs_itnim_stats_get()
823 	memset(&itnim->stats, 0, sizeof(struct bfa_itnim_stats_s));  in bfa_fcs_itnim_stats_clear()
833 	bfa_trc(itnim->fcs, fchs->type);  in bfa_fcs_fcpim_uf_recv()
835 	if (fchs->type != FC_TYPE_ELS)  in bfa_fcs_fcpim_uf_recv()
840 	bfa_trc(itnim->fcs, els_cmd->els_code);  in bfa_fcs_fcpim_uf_recv()
842 	switch (els_cmd->els_code) {  in bfa_fcs_fcpim_uf_recv()
844 		bfa_fcs_rport_prlo(itnim->rport, fchs->ox_id);  in bfa_fcs_fcpim_uf_recv()