2 * Linux network driver for QLogic BR-series Converged Network Adapter.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License (GPL) Version 2 as
6 * published by the Free Software Foundation
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
14 * Copyright (c) 2005-2014 Brocade Communications Systems, Inc.
15 * Copyright (c) 2014-2015 QLogic Corporation
20 /* MSGQ module source file. */
26 #define call_cmdq_ent_cbfn(_cmdq_ent, _status) \
28 bfa_msgq_cmdcbfn_t cbfn; \
30 cbfn = (_cmdq_ent)->cbfn; \
31 cbarg = (_cmdq_ent)->cbarg; \
32 (_cmdq_ent)->cbfn = NULL; \
33 (_cmdq_ent)->cbarg = NULL; \
35 cbfn(cbarg, (_status)); \
39 static void bfa_msgq_cmdq_dbell(struct bfa_msgq_cmdq *cmdq);
40 static void bfa_msgq_cmdq_copy_rsp(struct bfa_msgq_cmdq *cmdq);
51 bfa_fsm_state_decl(cmdq, stopped, struct bfa_msgq_cmdq, enum cmdq_event);
52 bfa_fsm_state_decl(cmdq, init_wait, struct bfa_msgq_cmdq, enum cmdq_event);
53 bfa_fsm_state_decl(cmdq, ready, struct bfa_msgq_cmdq, enum cmdq_event);
54 bfa_fsm_state_decl(cmdq, dbell_wait, struct bfa_msgq_cmdq,
58 cmdq_sm_stopped_entry(struct bfa_msgq_cmdq *cmdq)
60 struct bfa_msgq_cmd_entry *cmdq_ent;
62 cmdq->producer_index = 0;
63 cmdq->consumer_index = 0;
67 cmdq->bytes_to_copy = 0;
68 while (!list_empty(&cmdq->pending_q)) {
69 cmdq_ent = list_first_entry(&cmdq->pending_q,
70 struct bfa_msgq_cmd_entry, qe);
71 list_del(&cmdq_ent->qe);
72 call_cmdq_ent_cbfn(cmdq_ent, BFA_STATUS_FAILED);
77 cmdq_sm_stopped(struct bfa_msgq_cmdq *cmdq, enum cmdq_event event)
81 bfa_fsm_set_state(cmdq, cmdq_sm_init_wait);
90 cmdq->flags |= BFA_MSGQ_CMDQ_F_DB_UPDATE;
99 cmdq_sm_init_wait_entry(struct bfa_msgq_cmdq *cmdq)
101 bfa_wc_down(&cmdq->msgq->init_wc);
105 cmdq_sm_init_wait(struct bfa_msgq_cmdq *cmdq, enum cmdq_event event)
110 bfa_fsm_set_state(cmdq, cmdq_sm_stopped);
114 cmdq->flags |= BFA_MSGQ_CMDQ_F_DB_UPDATE;
117 case CMDQ_E_INIT_RESP:
118 if (cmdq->flags & BFA_MSGQ_CMDQ_F_DB_UPDATE) {
119 cmdq->flags &= ~BFA_MSGQ_CMDQ_F_DB_UPDATE;
120 bfa_fsm_set_state(cmdq, cmdq_sm_dbell_wait);
122 bfa_fsm_set_state(cmdq, cmdq_sm_ready);
131 cmdq_sm_ready_entry(struct bfa_msgq_cmdq *cmdq)
136 cmdq_sm_ready(struct bfa_msgq_cmdq *cmdq, enum cmdq_event event)
141 bfa_fsm_set_state(cmdq, cmdq_sm_stopped);
145 bfa_fsm_set_state(cmdq, cmdq_sm_dbell_wait);
154 cmdq_sm_dbell_wait_entry(struct bfa_msgq_cmdq *cmdq)
156 bfa_msgq_cmdq_dbell(cmdq);
160 cmdq_sm_dbell_wait(struct bfa_msgq_cmdq *cmdq, enum cmdq_event event)
165 bfa_fsm_set_state(cmdq, cmdq_sm_stopped);
169 cmdq->flags |= BFA_MSGQ_CMDQ_F_DB_UPDATE;
172 case CMDQ_E_DB_READY:
173 if (cmdq->flags & BFA_MSGQ_CMDQ_F_DB_UPDATE) {
174 cmdq->flags &= ~BFA_MSGQ_CMDQ_F_DB_UPDATE;
175 bfa_fsm_set_state(cmdq, cmdq_sm_dbell_wait);
177 bfa_fsm_set_state(cmdq, cmdq_sm_ready);
186 bfa_msgq_cmdq_dbell_ready(void *arg)
188 struct bfa_msgq_cmdq *cmdq = (struct bfa_msgq_cmdq *)arg;
189 bfa_fsm_send_event(cmdq, CMDQ_E_DB_READY);
193 bfa_msgq_cmdq_dbell(struct bfa_msgq_cmdq *cmdq)
195 struct bfi_msgq_h2i_db *dbell =
196 (struct bfi_msgq_h2i_db *)(&cmdq->dbell_mb.msg[0]);
198 memset(dbell, 0, sizeof(struct bfi_msgq_h2i_db));
199 bfi_h2i_set(dbell->mh, BFI_MC_MSGQ, BFI_MSGQ_H2I_DOORBELL_PI, 0);
200 dbell->mh.mtag.i2htok = 0;
201 dbell->idx.cmdq_pi = htons(cmdq->producer_index);
203 if (!bfa_nw_ioc_mbox_queue(cmdq->msgq->ioc, &cmdq->dbell_mb,
204 bfa_msgq_cmdq_dbell_ready, cmdq)) {
205 bfa_msgq_cmdq_dbell_ready(cmdq);
210 __cmd_copy(struct bfa_msgq_cmdq *cmdq, struct bfa_msgq_cmd_entry *cmd)
212 size_t len = cmd->msg_size;
217 src = (u8 *)cmd->msg_hdr;
218 dst = (u8 *)cmdq->addr.kva;
219 dst += (cmdq->producer_index * BFI_MSGQ_CMD_ENTRY_SIZE);
222 to_copy = (len < BFI_MSGQ_CMD_ENTRY_SIZE) ?
223 len : BFI_MSGQ_CMD_ENTRY_SIZE;
224 memcpy(dst, src, to_copy);
226 src += BFI_MSGQ_CMD_ENTRY_SIZE;
227 BFA_MSGQ_INDX_ADD(cmdq->producer_index, 1, cmdq->depth);
228 dst = (u8 *)cmdq->addr.kva;
229 dst += (cmdq->producer_index * BFI_MSGQ_CMD_ENTRY_SIZE);
236 bfa_msgq_cmdq_ci_update(struct bfa_msgq_cmdq *cmdq, struct bfi_mbmsg *mb)
238 struct bfi_msgq_i2h_db *dbell = (struct bfi_msgq_i2h_db *)mb;
239 struct bfa_msgq_cmd_entry *cmd;
242 cmdq->consumer_index = ntohs(dbell->idx.cmdq_ci);
244 /* Walk through pending list to see if the command can be posted */
245 while (!list_empty(&cmdq->pending_q)) {
246 cmd = list_first_entry(&cmdq->pending_q,
247 struct bfa_msgq_cmd_entry, qe);
248 if (ntohs(cmd->msg_hdr->num_entries) <=
249 BFA_MSGQ_FREE_CNT(cmdq)) {
251 __cmd_copy(cmdq, cmd);
253 call_cmdq_ent_cbfn(cmd, BFA_STATUS_OK);
260 bfa_fsm_send_event(cmdq, CMDQ_E_POST);
264 bfa_msgq_cmdq_copy_next(void *arg)
266 struct bfa_msgq_cmdq *cmdq = (struct bfa_msgq_cmdq *)arg;
268 if (cmdq->bytes_to_copy)
269 bfa_msgq_cmdq_copy_rsp(cmdq);
273 bfa_msgq_cmdq_copy_req(struct bfa_msgq_cmdq *cmdq, struct bfi_mbmsg *mb)
275 struct bfi_msgq_i2h_cmdq_copy_req *req =
276 (struct bfi_msgq_i2h_cmdq_copy_req *)mb;
279 cmdq->offset = ntohs(req->offset);
280 cmdq->bytes_to_copy = ntohs(req->len);
281 bfa_msgq_cmdq_copy_rsp(cmdq);
285 bfa_msgq_cmdq_copy_rsp(struct bfa_msgq_cmdq *cmdq)
287 struct bfi_msgq_h2i_cmdq_copy_rsp *rsp =
288 (struct bfi_msgq_h2i_cmdq_copy_rsp *)&cmdq->copy_mb.msg[0];
290 u8 *addr = (u8 *)cmdq->addr.kva;
292 memset(rsp, 0, sizeof(struct bfi_msgq_h2i_cmdq_copy_rsp));
293 bfi_h2i_set(rsp->mh, BFI_MC_MSGQ, BFI_MSGQ_H2I_CMDQ_COPY_RSP, 0);
294 rsp->mh.mtag.i2htok = htons(cmdq->token);
295 copied = (cmdq->bytes_to_copy >= BFI_CMD_COPY_SZ) ? BFI_CMD_COPY_SZ :
297 addr += cmdq->offset;
298 memcpy(rsp->data, addr, copied);
301 cmdq->offset += copied;
302 cmdq->bytes_to_copy -= copied;
304 if (!bfa_nw_ioc_mbox_queue(cmdq->msgq->ioc, &cmdq->copy_mb,
305 bfa_msgq_cmdq_copy_next, cmdq)) {
306 bfa_msgq_cmdq_copy_next(cmdq);
311 bfa_msgq_cmdq_attach(struct bfa_msgq_cmdq *cmdq, struct bfa_msgq *msgq)
313 cmdq->depth = BFA_MSGQ_CMDQ_NUM_ENTRY;
314 INIT_LIST_HEAD(&cmdq->pending_q);
316 bfa_fsm_set_state(cmdq, cmdq_sm_stopped);
319 static void bfa_msgq_rspq_dbell(struct bfa_msgq_rspq *rspq);
326 RSPQ_E_INIT_RESP = 5,
330 bfa_fsm_state_decl(rspq, stopped, struct bfa_msgq_rspq, enum rspq_event);
331 bfa_fsm_state_decl(rspq, init_wait, struct bfa_msgq_rspq,
333 bfa_fsm_state_decl(rspq, ready, struct bfa_msgq_rspq, enum rspq_event);
334 bfa_fsm_state_decl(rspq, dbell_wait, struct bfa_msgq_rspq,
338 rspq_sm_stopped_entry(struct bfa_msgq_rspq *rspq)
340 rspq->producer_index = 0;
341 rspq->consumer_index = 0;
346 rspq_sm_stopped(struct bfa_msgq_rspq *rspq, enum rspq_event event)
350 bfa_fsm_set_state(rspq, rspq_sm_init_wait);
364 rspq_sm_init_wait_entry(struct bfa_msgq_rspq *rspq)
366 bfa_wc_down(&rspq->msgq->init_wc);
370 rspq_sm_init_wait(struct bfa_msgq_rspq *rspq, enum rspq_event event)
375 bfa_fsm_set_state(rspq, rspq_sm_stopped);
378 case RSPQ_E_INIT_RESP:
379 bfa_fsm_set_state(rspq, rspq_sm_ready);
388 rspq_sm_ready_entry(struct bfa_msgq_rspq *rspq)
393 rspq_sm_ready(struct bfa_msgq_rspq *rspq, enum rspq_event event)
398 bfa_fsm_set_state(rspq, rspq_sm_stopped);
402 bfa_fsm_set_state(rspq, rspq_sm_dbell_wait);
411 rspq_sm_dbell_wait_entry(struct bfa_msgq_rspq *rspq)
413 if (!bfa_nw_ioc_is_disabled(rspq->msgq->ioc))
414 bfa_msgq_rspq_dbell(rspq);
418 rspq_sm_dbell_wait(struct bfa_msgq_rspq *rspq, enum rspq_event event)
423 bfa_fsm_set_state(rspq, rspq_sm_stopped);
427 rspq->flags |= BFA_MSGQ_RSPQ_F_DB_UPDATE;
430 case RSPQ_E_DB_READY:
431 if (rspq->flags & BFA_MSGQ_RSPQ_F_DB_UPDATE) {
432 rspq->flags &= ~BFA_MSGQ_RSPQ_F_DB_UPDATE;
433 bfa_fsm_set_state(rspq, rspq_sm_dbell_wait);
435 bfa_fsm_set_state(rspq, rspq_sm_ready);
444 bfa_msgq_rspq_dbell_ready(void *arg)
446 struct bfa_msgq_rspq *rspq = (struct bfa_msgq_rspq *)arg;
447 bfa_fsm_send_event(rspq, RSPQ_E_DB_READY);
451 bfa_msgq_rspq_dbell(struct bfa_msgq_rspq *rspq)
453 struct bfi_msgq_h2i_db *dbell =
454 (struct bfi_msgq_h2i_db *)(&rspq->dbell_mb.msg[0]);
456 memset(dbell, 0, sizeof(struct bfi_msgq_h2i_db));
457 bfi_h2i_set(dbell->mh, BFI_MC_MSGQ, BFI_MSGQ_H2I_DOORBELL_CI, 0);
458 dbell->mh.mtag.i2htok = 0;
459 dbell->idx.rspq_ci = htons(rspq->consumer_index);
461 if (!bfa_nw_ioc_mbox_queue(rspq->msgq->ioc, &rspq->dbell_mb,
462 bfa_msgq_rspq_dbell_ready, rspq)) {
463 bfa_msgq_rspq_dbell_ready(rspq);
468 bfa_msgq_rspq_pi_update(struct bfa_msgq_rspq *rspq, struct bfi_mbmsg *mb)
470 struct bfi_msgq_i2h_db *dbell = (struct bfi_msgq_i2h_db *)mb;
471 struct bfi_msgq_mhdr *msghdr;
476 rspq->producer_index = ntohs(dbell->idx.rspq_pi);
478 while (rspq->consumer_index != rspq->producer_index) {
479 rspq_qe = (u8 *)rspq->addr.kva;
480 rspq_qe += (rspq->consumer_index * BFI_MSGQ_RSP_ENTRY_SIZE);
481 msghdr = (struct bfi_msgq_mhdr *)rspq_qe;
483 mc = msghdr->msg_class;
484 num_entries = ntohs(msghdr->num_entries);
486 if ((mc >= BFI_MC_MAX) || (rspq->rsphdlr[mc].cbfn == NULL))
489 (rspq->rsphdlr[mc].cbfn)(rspq->rsphdlr[mc].cbarg, msghdr);
491 BFA_MSGQ_INDX_ADD(rspq->consumer_index, num_entries,
495 bfa_fsm_send_event(rspq, RSPQ_E_RESP);
499 bfa_msgq_rspq_attach(struct bfa_msgq_rspq *rspq, struct bfa_msgq *msgq)
501 rspq->depth = BFA_MSGQ_RSPQ_NUM_ENTRY;
503 bfa_fsm_set_state(rspq, rspq_sm_stopped);
507 bfa_msgq_init_rsp(struct bfa_msgq *msgq,
508 struct bfi_mbmsg *mb)
510 bfa_fsm_send_event(&msgq->cmdq, CMDQ_E_INIT_RESP);
511 bfa_fsm_send_event(&msgq->rspq, RSPQ_E_INIT_RESP);
515 bfa_msgq_init(void *arg)
517 struct bfa_msgq *msgq = (struct bfa_msgq *)arg;
518 struct bfi_msgq_cfg_req *msgq_cfg =
519 (struct bfi_msgq_cfg_req *)&msgq->init_mb.msg[0];
521 memset(msgq_cfg, 0, sizeof(struct bfi_msgq_cfg_req));
522 bfi_h2i_set(msgq_cfg->mh, BFI_MC_MSGQ, BFI_MSGQ_H2I_INIT_REQ, 0);
523 msgq_cfg->mh.mtag.i2htok = 0;
525 bfa_dma_be_addr_set(msgq_cfg->cmdq.addr, msgq->cmdq.addr.pa);
526 msgq_cfg->cmdq.q_depth = htons(msgq->cmdq.depth);
527 bfa_dma_be_addr_set(msgq_cfg->rspq.addr, msgq->rspq.addr.pa);
528 msgq_cfg->rspq.q_depth = htons(msgq->rspq.depth);
530 bfa_nw_ioc_mbox_queue(msgq->ioc, &msgq->init_mb, NULL, NULL);
534 bfa_msgq_isr(void *cbarg, struct bfi_mbmsg *msg)
536 struct bfa_msgq *msgq = (struct bfa_msgq *)cbarg;
538 switch (msg->mh.msg_id) {
539 case BFI_MSGQ_I2H_INIT_RSP:
540 bfa_msgq_init_rsp(msgq, msg);
543 case BFI_MSGQ_I2H_DOORBELL_PI:
544 bfa_msgq_rspq_pi_update(&msgq->rspq, msg);
547 case BFI_MSGQ_I2H_DOORBELL_CI:
548 bfa_msgq_cmdq_ci_update(&msgq->cmdq, msg);
551 case BFI_MSGQ_I2H_CMDQ_COPY_REQ:
552 bfa_msgq_cmdq_copy_req(&msgq->cmdq, msg);
561 bfa_msgq_notify(void *cbarg, enum bfa_ioc_event event)
563 struct bfa_msgq *msgq = (struct bfa_msgq *)cbarg;
566 case BFA_IOC_E_ENABLED:
567 bfa_wc_init(&msgq->init_wc, bfa_msgq_init, msgq);
568 bfa_wc_up(&msgq->init_wc);
569 bfa_fsm_send_event(&msgq->cmdq, CMDQ_E_START);
570 bfa_wc_up(&msgq->init_wc);
571 bfa_fsm_send_event(&msgq->rspq, RSPQ_E_START);
572 bfa_wc_wait(&msgq->init_wc);
575 case BFA_IOC_E_DISABLED:
576 bfa_fsm_send_event(&msgq->cmdq, CMDQ_E_STOP);
577 bfa_fsm_send_event(&msgq->rspq, RSPQ_E_STOP);
580 case BFA_IOC_E_FAILED:
581 bfa_fsm_send_event(&msgq->cmdq, CMDQ_E_FAIL);
582 bfa_fsm_send_event(&msgq->rspq, RSPQ_E_FAIL);
591 bfa_msgq_meminfo(void)
593 return roundup(BFA_MSGQ_CMDQ_SIZE, BFA_DMA_ALIGN_SZ) +
594 roundup(BFA_MSGQ_RSPQ_SIZE, BFA_DMA_ALIGN_SZ);
598 bfa_msgq_memclaim(struct bfa_msgq *msgq, u8 *kva, u64 pa)
600 msgq->cmdq.addr.kva = kva;
601 msgq->cmdq.addr.pa = pa;
603 kva += roundup(BFA_MSGQ_CMDQ_SIZE, BFA_DMA_ALIGN_SZ);
604 pa += roundup(BFA_MSGQ_CMDQ_SIZE, BFA_DMA_ALIGN_SZ);
606 msgq->rspq.addr.kva = kva;
607 msgq->rspq.addr.pa = pa;
611 bfa_msgq_attach(struct bfa_msgq *msgq, struct bfa_ioc *ioc)
615 bfa_msgq_cmdq_attach(&msgq->cmdq, msgq);
616 bfa_msgq_rspq_attach(&msgq->rspq, msgq);
618 bfa_nw_ioc_mbox_regisr(msgq->ioc, BFI_MC_MSGQ, bfa_msgq_isr, msgq);
619 bfa_ioc_notify_init(&msgq->ioc_notify, bfa_msgq_notify, msgq);
620 bfa_nw_ioc_notify_register(msgq->ioc, &msgq->ioc_notify);
624 bfa_msgq_regisr(struct bfa_msgq *msgq, enum bfi_mclass mc,
625 bfa_msgq_mcfunc_t cbfn, void *cbarg)
627 msgq->rspq.rsphdlr[mc].cbfn = cbfn;
628 msgq->rspq.rsphdlr[mc].cbarg = cbarg;
632 bfa_msgq_cmd_post(struct bfa_msgq *msgq, struct bfa_msgq_cmd_entry *cmd)
634 if (ntohs(cmd->msg_hdr->num_entries) <=
635 BFA_MSGQ_FREE_CNT(&msgq->cmdq)) {
636 __cmd_copy(&msgq->cmdq, cmd);
637 call_cmdq_ent_cbfn(cmd, BFA_STATUS_OK);
638 bfa_fsm_send_event(&msgq->cmdq, CMDQ_E_POST);
640 list_add_tail(&cmd->qe, &msgq->cmdq.pending_q);
645 bfa_msgq_rsp_copy(struct bfa_msgq *msgq, u8 *buf, size_t buf_len)
647 struct bfa_msgq_rspq *rspq = &msgq->rspq;
648 size_t len = buf_len;
653 ci = rspq->consumer_index;
654 src = (u8 *)rspq->addr.kva;
655 src += (ci * BFI_MSGQ_RSP_ENTRY_SIZE);
659 to_copy = (len < BFI_MSGQ_RSP_ENTRY_SIZE) ?
660 len : BFI_MSGQ_RSP_ENTRY_SIZE;
661 memcpy(dst, src, to_copy);
663 dst += BFI_MSGQ_RSP_ENTRY_SIZE;
664 BFA_MSGQ_INDX_ADD(ci, 1, rspq->depth);
665 src = (u8 *)rspq->addr.kva;
666 src += (ci * BFI_MSGQ_RSP_ENTRY_SIZE);