2 * Copyright (c) 2005-2009 Brocade Communications Systems, Inc.
6 * Linux driver for Brocade Fibre Channel Host Bus Adapter.
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
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.
19 #include <bfi/bfi_lps.h>
20 #include <cs/bfa_debug.h>
21 #include <defs/bfa_defs_pci.h>
23 BFA_TRC_FILE(HAL, LPS);
26 #define BFA_LPS_MIN_LPORTS (1)
27 #define BFA_LPS_MAX_LPORTS (256)
30 * Maximum Vports supported per physical port or vf.
32 #define BFA_LPS_MAX_VPORTS_SUPP_CB 255
33 #define BFA_LPS_MAX_VPORTS_SUPP_CT 190
36 * forward declarations
38 static void bfa_lps_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *ndm_len,
40 static void bfa_lps_attach(struct bfa_s *bfa, void *bfad,
41 struct bfa_iocfc_cfg_s *cfg,
42 struct bfa_meminfo_s *meminfo,
43 struct bfa_pcidev_s *pcidev);
44 static void bfa_lps_detach(struct bfa_s *bfa);
45 static void bfa_lps_start(struct bfa_s *bfa);
46 static void bfa_lps_stop(struct bfa_s *bfa);
47 static void bfa_lps_iocdisable(struct bfa_s *bfa);
48 static void bfa_lps_login_rsp(struct bfa_s *bfa,
49 struct bfi_lps_login_rsp_s *rsp);
50 static void bfa_lps_logout_rsp(struct bfa_s *bfa,
51 struct bfi_lps_logout_rsp_s *rsp);
52 static void bfa_lps_reqq_resume(void *lps_arg);
53 static void bfa_lps_free(struct bfa_lps_s *lps);
54 static void bfa_lps_send_login(struct bfa_lps_s *lps);
55 static void bfa_lps_send_logout(struct bfa_lps_s *lps);
56 static void bfa_lps_login_comp(struct bfa_lps_s *lps);
57 static void bfa_lps_logout_comp(struct bfa_lps_s *lps);
58 static void bfa_lps_cvl_event(struct bfa_lps_s *lps);
61 * lps_pvt BFA LPS private functions
65 BFA_LPS_SM_LOGIN = 1, /* login request from user */
66 BFA_LPS_SM_LOGOUT = 2, /* logout request from user */
67 BFA_LPS_SM_FWRSP = 3, /* f/w response to login/logout */
68 BFA_LPS_SM_RESUME = 4, /* space present in reqq queue */
69 BFA_LPS_SM_DELETE = 5, /* lps delete from user */
70 BFA_LPS_SM_OFFLINE = 6, /* Link is offline */
71 BFA_LPS_SM_RX_CVL = 7, /* Rx clear virtual link */
74 static void bfa_lps_sm_init(struct bfa_lps_s *lps, enum bfa_lps_event event);
75 static void bfa_lps_sm_login(struct bfa_lps_s *lps, enum bfa_lps_event event);
76 static void bfa_lps_sm_loginwait(struct bfa_lps_s *lps,
77 enum bfa_lps_event event);
78 static void bfa_lps_sm_online(struct bfa_lps_s *lps, enum bfa_lps_event event);
79 static void bfa_lps_sm_logout(struct bfa_lps_s *lps, enum bfa_lps_event event);
80 static void bfa_lps_sm_logowait(struct bfa_lps_s *lps,
81 enum bfa_lps_event event);
84 * Init state -- no login
87 bfa_lps_sm_init(struct bfa_lps_s *lps, enum bfa_lps_event event)
89 bfa_trc(lps->bfa, lps->lp_tag);
90 bfa_trc(lps->bfa, event);
93 case BFA_LPS_SM_LOGIN:
94 if (bfa_reqq_full(lps->bfa, lps->reqq)) {
95 bfa_sm_set_state(lps, bfa_lps_sm_loginwait);
96 bfa_reqq_wait(lps->bfa, lps->reqq, &lps->wqe);
98 bfa_sm_set_state(lps, bfa_lps_sm_login);
99 bfa_lps_send_login(lps);
102 bfa_plog_str(lps->bfa->plog, BFA_PL_MID_LPS,
103 BFA_PL_EID_LOGIN, 0, "FDISC Request");
105 bfa_plog_str(lps->bfa->plog, BFA_PL_MID_LPS,
106 BFA_PL_EID_LOGIN, 0, "FLOGI Request");
109 case BFA_LPS_SM_LOGOUT:
110 bfa_lps_logout_comp(lps);
113 case BFA_LPS_SM_DELETE:
117 case BFA_LPS_SM_RX_CVL:
118 case BFA_LPS_SM_OFFLINE:
121 case BFA_LPS_SM_FWRSP:
122 /* Could happen when fabric detects loopback and discards
123 * the lps request. Fw will eventually sent out the timeout
129 bfa_sm_fault(lps->bfa, event);
134 * login is in progress -- awaiting response from firmware
137 bfa_lps_sm_login(struct bfa_lps_s *lps, enum bfa_lps_event event)
139 bfa_trc(lps->bfa, lps->lp_tag);
140 bfa_trc(lps->bfa, event);
143 case BFA_LPS_SM_FWRSP:
144 if (lps->status == BFA_STATUS_OK) {
145 bfa_sm_set_state(lps, bfa_lps_sm_online);
147 bfa_plog_str(lps->bfa->plog, BFA_PL_MID_LPS,
148 BFA_PL_EID_LOGIN, 0, "FDISC Accept");
150 bfa_plog_str(lps->bfa->plog, BFA_PL_MID_LPS,
151 BFA_PL_EID_LOGIN, 0, "FLOGI Accept");
153 bfa_sm_set_state(lps, bfa_lps_sm_init);
155 bfa_plog_str(lps->bfa->plog, BFA_PL_MID_LPS,
157 "FDISC Fail (RJT or timeout)");
159 bfa_plog_str(lps->bfa->plog, BFA_PL_MID_LPS,
161 "FLOGI Fail (RJT or timeout)");
163 bfa_lps_login_comp(lps);
166 case BFA_LPS_SM_OFFLINE:
167 bfa_sm_set_state(lps, bfa_lps_sm_init);
171 bfa_sm_fault(lps->bfa, event);
176 * login pending - awaiting space in request queue
179 bfa_lps_sm_loginwait(struct bfa_lps_s *lps, enum bfa_lps_event event)
181 bfa_trc(lps->bfa, lps->lp_tag);
182 bfa_trc(lps->bfa, event);
185 case BFA_LPS_SM_RESUME:
186 bfa_sm_set_state(lps, bfa_lps_sm_login);
189 case BFA_LPS_SM_OFFLINE:
190 bfa_sm_set_state(lps, bfa_lps_sm_init);
191 bfa_reqq_wcancel(&lps->wqe);
194 case BFA_LPS_SM_RX_CVL:
196 * Login was not even sent out; so when getting out
197 * of this state, it will appear like a login retry
198 * after Clear virtual link
203 bfa_sm_fault(lps->bfa, event);
211 bfa_lps_sm_online(struct bfa_lps_s *lps, enum bfa_lps_event event)
213 bfa_trc(lps->bfa, lps->lp_tag);
214 bfa_trc(lps->bfa, event);
217 case BFA_LPS_SM_LOGOUT:
218 if (bfa_reqq_full(lps->bfa, lps->reqq)) {
219 bfa_sm_set_state(lps, bfa_lps_sm_logowait);
220 bfa_reqq_wait(lps->bfa, lps->reqq, &lps->wqe);
222 bfa_sm_set_state(lps, bfa_lps_sm_logout);
223 bfa_lps_send_logout(lps);
225 bfa_plog_str(lps->bfa->plog, BFA_PL_MID_LPS,
226 BFA_PL_EID_LOGO, 0, "Logout");
229 case BFA_LPS_SM_RX_CVL:
230 bfa_sm_set_state(lps, bfa_lps_sm_init);
232 /* Let the vport module know about this event */
233 bfa_lps_cvl_event(lps);
234 bfa_plog_str(lps->bfa->plog, BFA_PL_MID_LPS,
235 BFA_PL_EID_FIP_FCF_CVL, 0, "FCF Clear Virt. Link Rx");
238 case BFA_LPS_SM_OFFLINE:
239 case BFA_LPS_SM_DELETE:
240 bfa_sm_set_state(lps, bfa_lps_sm_init);
244 bfa_sm_fault(lps->bfa, event);
249 * logout in progress - awaiting firmware response
252 bfa_lps_sm_logout(struct bfa_lps_s *lps, enum bfa_lps_event event)
254 bfa_trc(lps->bfa, lps->lp_tag);
255 bfa_trc(lps->bfa, event);
258 case BFA_LPS_SM_FWRSP:
259 bfa_sm_set_state(lps, bfa_lps_sm_init);
260 bfa_lps_logout_comp(lps);
263 case BFA_LPS_SM_OFFLINE:
264 bfa_sm_set_state(lps, bfa_lps_sm_init);
268 bfa_sm_fault(lps->bfa, event);
273 * logout pending -- awaiting space in request queue
276 bfa_lps_sm_logowait(struct bfa_lps_s *lps, enum bfa_lps_event event)
278 bfa_trc(lps->bfa, lps->lp_tag);
279 bfa_trc(lps->bfa, event);
282 case BFA_LPS_SM_RESUME:
283 bfa_sm_set_state(lps, bfa_lps_sm_logout);
284 bfa_lps_send_logout(lps);
287 case BFA_LPS_SM_OFFLINE:
288 bfa_sm_set_state(lps, bfa_lps_sm_init);
289 bfa_reqq_wcancel(&lps->wqe);
293 bfa_sm_fault(lps->bfa, event);
300 * lps_pvt BFA LPS private functions
304 * return memory requirement
307 bfa_lps_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *ndm_len, u32 *dm_len)
309 if (cfg->drvcfg.min_cfg)
310 *ndm_len += sizeof(struct bfa_lps_s) * BFA_LPS_MIN_LPORTS;
312 *ndm_len += sizeof(struct bfa_lps_s) * BFA_LPS_MAX_LPORTS;
316 * bfa module attach at initialization time
319 bfa_lps_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
320 struct bfa_meminfo_s *meminfo, struct bfa_pcidev_s *pcidev)
322 struct bfa_lps_mod_s *mod = BFA_LPS_MOD(bfa);
323 struct bfa_lps_s *lps;
326 bfa_os_memset(mod, 0, sizeof(struct bfa_lps_mod_s));
327 mod->num_lps = BFA_LPS_MAX_LPORTS;
328 if (cfg->drvcfg.min_cfg)
329 mod->num_lps = BFA_LPS_MIN_LPORTS;
331 mod->num_lps = BFA_LPS_MAX_LPORTS;
332 mod->lps_arr = lps = (struct bfa_lps_s *) bfa_meminfo_kva(meminfo);
334 bfa_meminfo_kva(meminfo) += mod->num_lps * sizeof(struct bfa_lps_s);
336 INIT_LIST_HEAD(&mod->lps_free_q);
337 INIT_LIST_HEAD(&mod->lps_active_q);
339 for (i = 0; i < mod->num_lps; i++, lps++) {
341 lps->lp_tag = (u8) i;
342 lps->reqq = BFA_REQQ_LPS;
343 bfa_reqq_winit(&lps->wqe, bfa_lps_reqq_resume, lps);
344 list_add_tail(&lps->qe, &mod->lps_free_q);
349 bfa_lps_detach(struct bfa_s *bfa)
354 bfa_lps_start(struct bfa_s *bfa)
359 bfa_lps_stop(struct bfa_s *bfa)
364 * IOC in disabled state -- consider all lps offline
367 bfa_lps_iocdisable(struct bfa_s *bfa)
369 struct bfa_lps_mod_s *mod = BFA_LPS_MOD(bfa);
370 struct bfa_lps_s *lps;
371 struct list_head *qe, *qen;
373 list_for_each_safe(qe, qen, &mod->lps_active_q) {
374 lps = (struct bfa_lps_s *) qe;
375 bfa_sm_send_event(lps, BFA_LPS_SM_OFFLINE);
380 * Firmware login response
383 bfa_lps_login_rsp(struct bfa_s *bfa, struct bfi_lps_login_rsp_s *rsp)
385 struct bfa_lps_mod_s *mod = BFA_LPS_MOD(bfa);
386 struct bfa_lps_s *lps;
388 bfa_assert(rsp->lp_tag < mod->num_lps);
389 lps = BFA_LPS_FROM_TAG(mod, rsp->lp_tag);
391 lps->status = rsp->status;
392 switch (rsp->status) {
394 lps->fport = rsp->f_port;
395 lps->npiv_en = rsp->npiv_en;
396 lps->lp_pid = rsp->lp_pid;
397 lps->pr_bbcred = bfa_os_ntohs(rsp->bb_credit);
398 lps->pr_pwwn = rsp->port_name;
399 lps->pr_nwwn = rsp->node_name;
400 lps->auth_req = rsp->auth_req;
401 lps->lp_mac = rsp->lp_mac;
402 lps->brcd_switch = rsp->brcd_switch;
403 lps->fcf_mac = rsp->fcf_mac;
407 case BFA_STATUS_FABRIC_RJT:
408 lps->lsrjt_rsn = rsp->lsrjt_rsn;
409 lps->lsrjt_expl = rsp->lsrjt_expl;
413 case BFA_STATUS_EPROTOCOL:
414 lps->ext_status = rsp->ext_status;
419 /* Nothing to do with other status */
423 bfa_sm_send_event(lps, BFA_LPS_SM_FWRSP);
427 * Firmware logout response
430 bfa_lps_logout_rsp(struct bfa_s *bfa, struct bfi_lps_logout_rsp_s *rsp)
432 struct bfa_lps_mod_s *mod = BFA_LPS_MOD(bfa);
433 struct bfa_lps_s *lps;
435 bfa_assert(rsp->lp_tag < mod->num_lps);
436 lps = BFA_LPS_FROM_TAG(mod, rsp->lp_tag);
438 bfa_sm_send_event(lps, BFA_LPS_SM_FWRSP);
442 * Firmware received a Clear virtual link request (for FCoE)
445 bfa_lps_rx_cvl_event(struct bfa_s *bfa, struct bfi_lps_cvl_event_s *cvl)
447 struct bfa_lps_mod_s *mod = BFA_LPS_MOD(bfa);
448 struct bfa_lps_s *lps;
450 lps = BFA_LPS_FROM_TAG(mod, cvl->lp_tag);
452 bfa_sm_send_event(lps, BFA_LPS_SM_RX_CVL);
456 * Space is available in request queue, resume queueing request to firmware.
459 bfa_lps_reqq_resume(void *lps_arg)
461 struct bfa_lps_s *lps = lps_arg;
463 bfa_sm_send_event(lps, BFA_LPS_SM_RESUME);
467 * lps is freed -- triggered by vport delete
470 bfa_lps_free(struct bfa_lps_s *lps)
472 struct bfa_lps_mod_s *mod = BFA_LPS_MOD(lps->bfa);
475 list_add_tail(&lps->qe, &mod->lps_free_q);
479 * send login request to firmware
482 bfa_lps_send_login(struct bfa_lps_s *lps)
484 struct bfi_lps_login_req_s *m;
486 m = bfa_reqq_next(lps->bfa, lps->reqq);
489 bfi_h2i_set(m->mh, BFI_MC_LPS, BFI_LPS_H2I_LOGIN_REQ,
490 bfa_lpuid(lps->bfa));
492 m->lp_tag = lps->lp_tag;
494 m->pdu_size = bfa_os_htons(lps->pdusz);
497 m->fdisc = lps->fdisc;
498 m->auth_en = lps->auth_en;
500 bfa_reqq_produce(lps->bfa, lps->reqq);
504 * send logout request to firmware
507 bfa_lps_send_logout(struct bfa_lps_s *lps)
509 struct bfi_lps_logout_req_s *m;
511 m = bfa_reqq_next(lps->bfa, lps->reqq);
514 bfi_h2i_set(m->mh, BFI_MC_LPS, BFI_LPS_H2I_LOGOUT_REQ,
515 bfa_lpuid(lps->bfa));
517 m->lp_tag = lps->lp_tag;
518 m->port_name = lps->pwwn;
519 bfa_reqq_produce(lps->bfa, lps->reqq);
523 * Indirect login completion handler for non-fcs
526 bfa_lps_login_comp_cb(void *arg, bfa_boolean_t complete)
528 struct bfa_lps_s *lps = arg;
534 bfa_cb_lps_fdisc_comp(lps->bfa->bfad, lps->uarg, lps->status);
536 bfa_cb_lps_flogi_comp(lps->bfa->bfad, lps->uarg, lps->status);
540 * Login completion handler -- direct call for fcs, queue for others
543 bfa_lps_login_comp(struct bfa_lps_s *lps)
545 if (!lps->bfa->fcs) {
546 bfa_cb_queue(lps->bfa, &lps->hcb_qe,
547 bfa_lps_login_comp_cb, lps);
552 bfa_cb_lps_fdisc_comp(lps->bfa->bfad, lps->uarg, lps->status);
554 bfa_cb_lps_flogi_comp(lps->bfa->bfad, lps->uarg, lps->status);
558 * Indirect logout completion handler for non-fcs
561 bfa_lps_logout_comp_cb(void *arg, bfa_boolean_t complete)
563 struct bfa_lps_s *lps = arg;
569 bfa_cb_lps_fdisclogo_comp(lps->bfa->bfad, lps->uarg);
571 bfa_cb_lps_flogo_comp(lps->bfa->bfad, lps->uarg);
575 * Logout completion handler -- direct call for fcs, queue for others
578 bfa_lps_logout_comp(struct bfa_lps_s *lps)
580 if (!lps->bfa->fcs) {
581 bfa_cb_queue(lps->bfa, &lps->hcb_qe,
582 bfa_lps_logout_comp_cb, lps);
586 bfa_cb_lps_fdisclogo_comp(lps->bfa->bfad, lps->uarg);
588 bfa_cb_lps_flogo_comp(lps->bfa->bfad, lps->uarg);
592 * Clear virtual link completion handler for non-fcs
595 bfa_lps_cvl_event_cb(void *arg, bfa_boolean_t complete)
597 struct bfa_lps_s *lps = arg;
602 /* Clear virtual link to base port will result in link down */
604 bfa_cb_lps_cvl_event(lps->bfa->bfad, lps->uarg);
608 * Received Clear virtual link event --direct call for fcs,
612 bfa_lps_cvl_event(struct bfa_lps_s *lps)
614 if (!lps->bfa->fcs) {
615 bfa_cb_queue(lps->bfa, &lps->hcb_qe, bfa_lps_cvl_event_cb,
620 /* Clear virtual link to base port will result in link down */
622 bfa_cb_lps_cvl_event(lps->bfa->bfad, lps->uarg);
626 bfa_lps_get_max_vport(struct bfa_s *bfa)
628 if (bfa_ioc_devid(&bfa->ioc) == BFA_PCI_DEVICE_ID_CT)
629 return BFA_LPS_MAX_VPORTS_SUPP_CT;
631 return BFA_LPS_MAX_VPORTS_SUPP_CB;
635 * lps_public BFA LPS public functions
639 * Allocate a lport srvice tag.
642 bfa_lps_alloc(struct bfa_s *bfa)
644 struct bfa_lps_mod_s *mod = BFA_LPS_MOD(bfa);
645 struct bfa_lps_s *lps = NULL;
647 bfa_q_deq(&mod->lps_free_q, &lps);
652 list_add_tail(&lps->qe, &mod->lps_active_q);
654 bfa_sm_set_state(lps, bfa_lps_sm_init);
659 * Free lport service tag. This can be called anytime after an alloc.
660 * No need to wait for any pending login/logout completions.
663 bfa_lps_delete(struct bfa_lps_s *lps)
665 bfa_sm_send_event(lps, BFA_LPS_SM_DELETE);
669 * Initiate a lport login.
672 bfa_lps_flogi(struct bfa_lps_s *lps, void *uarg, u8 alpa, u16 pdusz,
673 wwn_t pwwn, wwn_t nwwn, bfa_boolean_t auth_en)
680 lps->fdisc = BFA_FALSE;
681 lps->auth_en = auth_en;
682 bfa_sm_send_event(lps, BFA_LPS_SM_LOGIN);
686 * Initiate a lport fdisc login.
689 bfa_lps_fdisc(struct bfa_lps_s *lps, void *uarg, u16 pdusz, wwn_t pwwn,
697 lps->fdisc = BFA_TRUE;
698 lps->auth_en = BFA_FALSE;
699 bfa_sm_send_event(lps, BFA_LPS_SM_LOGIN);
703 * Initiate a lport logout (flogi).
706 bfa_lps_flogo(struct bfa_lps_s *lps)
708 bfa_sm_send_event(lps, BFA_LPS_SM_LOGOUT);
712 * Initiate a lport FDSIC logout.
715 bfa_lps_fdisclogo(struct bfa_lps_s *lps)
717 bfa_sm_send_event(lps, BFA_LPS_SM_LOGOUT);
721 * Discard a pending login request -- should be called only for
722 * link down handling.
725 bfa_lps_discard(struct bfa_lps_s *lps)
727 bfa_sm_send_event(lps, BFA_LPS_SM_OFFLINE);
731 * Return lport services tag
734 bfa_lps_get_tag(struct bfa_lps_s *lps)
740 * Return lport services tag given the pid
743 bfa_lps_get_tag_from_pid(struct bfa_s *bfa, u32 pid)
745 struct bfa_lps_mod_s *mod = BFA_LPS_MOD(bfa);
746 struct bfa_lps_s *lps;
749 for (i = 0, lps = mod->lps_arr; i < mod->num_lps; i++, lps++) {
750 if (lps->lp_pid == pid)
754 /* Return base port tag anyway */
759 * return if fabric login indicates support for NPIV
762 bfa_lps_is_npiv_en(struct bfa_lps_s *lps)
768 * Return TRUE if attached to F-Port, else return FALSE
771 bfa_lps_is_fport(struct bfa_lps_s *lps)
777 * Return TRUE if attached to a Brocade Fabric
780 bfa_lps_is_brcd_fabric(struct bfa_lps_s *lps)
782 return lps->brcd_switch;
785 * return TRUE if authentication is required
788 bfa_lps_is_authreq(struct bfa_lps_s *lps)
790 return lps->auth_req;
794 bfa_lps_get_extstatus(struct bfa_lps_s *lps)
796 return lps->ext_status;
800 * return port id assigned to the lport
803 bfa_lps_get_pid(struct bfa_lps_s *lps)
809 * Return bb_credit assigned in FLOGI response
812 bfa_lps_get_peer_bbcredit(struct bfa_lps_s *lps)
814 return lps->pr_bbcred;
818 * Return peer port name
821 bfa_lps_get_peer_pwwn(struct bfa_lps_s *lps)
827 * Return peer node name
830 bfa_lps_get_peer_nwwn(struct bfa_lps_s *lps)
836 * return reason code if login request is rejected
839 bfa_lps_get_lsrjt_rsn(struct bfa_lps_s *lps)
841 return lps->lsrjt_rsn;
845 * return explanation code if login request is rejected
848 bfa_lps_get_lsrjt_expl(struct bfa_lps_s *lps)
850 return lps->lsrjt_expl;
854 * Return fpma/spma MAC for lport
857 bfa_lps_get_lp_mac(struct bfa_lps_s *lps)
863 * LPS firmware message class handler.
866 bfa_lps_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
868 union bfi_lps_i2h_msg_u msg;
870 bfa_trc(bfa, m->mhdr.msg_id);
873 switch (m->mhdr.msg_id) {
874 case BFI_LPS_H2I_LOGIN_RSP:
875 bfa_lps_login_rsp(bfa, msg.login_rsp);
878 case BFI_LPS_H2I_LOGOUT_RSP:
879 bfa_lps_logout_rsp(bfa, msg.logout_rsp);
882 case BFI_LPS_H2I_CVL_EVENT:
883 bfa_lps_rx_cvl_event(bfa, msg.cvl_event);
887 bfa_trc(bfa, m->mhdr.msg_id);