1 /* SPDX-License-Identifier: BSD-3-Clause
3 * Copyright(c) 2019-2020 Xilinx, Inc.
4 * Copyright(c) 2016-2019 Solarflare Communications Inc.
6 * This software was jointly developed between OKTET Labs (under contract
7 * for Solarflare) and Solarflare Communications, Inc.
10 #include <rte_debug.h>
11 #include <rte_cycles.h>
12 #include <rte_alarm.h>
13 #include <rte_branch_prediction.h>
18 #include "sfc_debug.h"
23 #include "sfc_kvargs.h"
26 /* Initial delay when waiting for event queue init complete event */
27 #define SFC_EVQ_INIT_BACKOFF_START_US (1)
28 /* Maximum delay between event queue polling attempts */
29 #define SFC_EVQ_INIT_BACKOFF_MAX_US (10 * 1000)
30 /* Event queue init approx timeout */
31 #define SFC_EVQ_INIT_TIMEOUT_US (2 * US_PER_S)
33 /* Management event queue polling period in microseconds */
34 #define SFC_MGMT_EV_QPOLL_PERIOD_US (US_PER_S)
37 sfc_evq_type2str(enum sfc_evq_type type)
40 case SFC_EVQ_TYPE_MGMT:
53 sfc_ev_initialized(void *arg)
55 struct sfc_evq *evq = arg;
57 /* Init done events may be duplicated on SFN7xxx (SFC bug 31631) */
58 SFC_ASSERT(evq->init_state == SFC_EVQ_STARTING ||
59 evq->init_state == SFC_EVQ_STARTED);
61 evq->init_state = SFC_EVQ_STARTED;
67 sfc_ev_nop_rx(void *arg, uint32_t label, uint32_t id,
68 uint32_t size, uint16_t flags)
70 struct sfc_evq *evq = arg;
73 "EVQ %u unexpected Rx event label=%u id=%#x size=%u flags=%#x",
74 evq->evq_index, label, id, size, flags);
79 sfc_ev_efx_rx(void *arg, __rte_unused uint32_t label, uint32_t id,
80 uint32_t size, uint16_t flags)
82 struct sfc_evq *evq = arg;
83 struct sfc_efx_rxq *rxq;
85 unsigned int pending_id;
88 struct sfc_efx_rx_sw_desc *rxd;
90 if (unlikely(evq->exception))
93 rxq = sfc_efx_rxq_by_dp_rxq(evq->dp_rxq);
95 SFC_ASSERT(rxq != NULL);
96 SFC_ASSERT(rxq->evq == evq);
97 SFC_ASSERT(rxq->flags & SFC_EFX_RXQ_FLAG_STARTED);
99 stop = (id + 1) & rxq->ptr_mask;
100 pending_id = rxq->pending & rxq->ptr_mask;
101 delta = (stop >= pending_id) ? (stop - pending_id) :
102 (rxq->ptr_mask + 1 - pending_id + stop);
106 * Rx event with no new descriptors done and zero length
107 * is used to abort scattered packet when there is no room
110 if (unlikely(size != 0)) {
111 evq->exception = B_TRUE;
113 "EVQ %u RxQ %u invalid RX abort "
114 "(id=%#x size=%u flags=%#x); needs restart",
115 evq->evq_index, rxq->dp.dpq.queue_id,
120 /* Add discard flag to the first fragment */
121 rxq->sw_desc[pending_id].flags |= EFX_DISCARD;
122 /* Remove continue flag from the last fragment */
123 rxq->sw_desc[id].flags &= ~EFX_PKT_CONT;
124 } else if (unlikely(delta > rxq->batch_max)) {
125 evq->exception = B_TRUE;
128 "EVQ %u RxQ %u completion out of order "
129 "(id=%#x delta=%u flags=%#x); needs restart",
130 evq->evq_index, rxq->dp.dpq.queue_id,
136 for (i = pending_id; i != stop; i = (i + 1) & rxq->ptr_mask) {
137 rxd = &rxq->sw_desc[i];
141 SFC_ASSERT(size < (1 << 16));
142 rxd->size = (uint16_t)size;
145 rxq->pending += delta;
152 sfc_ev_dp_rx(void *arg, __rte_unused uint32_t label, uint32_t id,
153 __rte_unused uint32_t size, __rte_unused uint16_t flags)
155 struct sfc_evq *evq = arg;
156 struct sfc_dp_rxq *dp_rxq;
158 dp_rxq = evq->dp_rxq;
159 SFC_ASSERT(dp_rxq != NULL);
161 SFC_ASSERT(evq->sa->priv.dp_rx->qrx_ev != NULL);
162 return evq->sa->priv.dp_rx->qrx_ev(dp_rxq, id);
166 sfc_ev_nop_rx_packets(void *arg, uint32_t label, unsigned int num_packets,
169 struct sfc_evq *evq = arg;
172 "EVQ %u unexpected Rx packets event label=%u num=%u flags=%#x",
173 evq->evq_index, label, num_packets, flags);
178 sfc_ev_dp_rx_packets(void *arg, __rte_unused uint32_t label,
179 unsigned int num_packets, __rte_unused uint32_t flags)
181 struct sfc_evq *evq = arg;
182 struct sfc_dp_rxq *dp_rxq;
184 dp_rxq = evq->dp_rxq;
185 SFC_ASSERT(dp_rxq != NULL);
187 SFC_ASSERT(evq->sa->priv.dp_rx->qrx_ev != NULL);
188 return evq->sa->priv.dp_rx->qrx_ev(dp_rxq, num_packets);
192 sfc_ev_nop_rx_ps(void *arg, uint32_t label, uint32_t id,
193 uint32_t pkt_count, uint16_t flags)
195 struct sfc_evq *evq = arg;
198 "EVQ %u unexpected packed stream Rx event label=%u id=%#x pkt_count=%u flags=%#x",
199 evq->evq_index, label, id, pkt_count, flags);
203 /* It is not actually used on datapath, but required on RxQ flush */
205 sfc_ev_dp_rx_ps(void *arg, __rte_unused uint32_t label, uint32_t id,
206 __rte_unused uint32_t pkt_count, __rte_unused uint16_t flags)
208 struct sfc_evq *evq = arg;
209 struct sfc_dp_rxq *dp_rxq;
211 dp_rxq = evq->dp_rxq;
212 SFC_ASSERT(dp_rxq != NULL);
214 if (evq->sa->priv.dp_rx->qrx_ps_ev != NULL)
215 return evq->sa->priv.dp_rx->qrx_ps_ev(dp_rxq, id);
221 sfc_ev_nop_tx(void *arg, uint32_t label, uint32_t id)
223 struct sfc_evq *evq = arg;
225 sfc_err(evq->sa, "EVQ %u unexpected Tx event label=%u id=%#x",
226 evq->evq_index, label, id);
231 sfc_ev_tx(void *arg, __rte_unused uint32_t label, uint32_t id)
233 struct sfc_evq *evq = arg;
234 struct sfc_dp_txq *dp_txq;
235 struct sfc_efx_txq *txq;
239 dp_txq = evq->dp_txq;
240 SFC_ASSERT(dp_txq != NULL);
242 txq = sfc_efx_txq_by_dp_txq(dp_txq);
243 SFC_ASSERT(txq->evq == evq);
245 if (unlikely((txq->flags & SFC_EFX_TXQ_FLAG_STARTED) == 0))
248 stop = (id + 1) & txq->ptr_mask;
249 id = txq->pending & txq->ptr_mask;
251 delta = (stop >= id) ? (stop - id) : (txq->ptr_mask + 1 - id + stop);
253 txq->pending += delta;
260 sfc_ev_dp_tx(void *arg, __rte_unused uint32_t label, uint32_t id)
262 struct sfc_evq *evq = arg;
263 struct sfc_dp_txq *dp_txq;
265 dp_txq = evq->dp_txq;
266 SFC_ASSERT(dp_txq != NULL);
268 SFC_ASSERT(evq->sa->priv.dp_tx->qtx_ev != NULL);
269 return evq->sa->priv.dp_tx->qtx_ev(dp_txq, id);
273 sfc_ev_exception(void *arg, uint32_t code, __rte_unused uint32_t data)
275 struct sfc_evq *evq = arg;
277 if (code == EFX_EXCEPTION_UNKNOWN_SENSOREVT)
280 evq->exception = B_TRUE;
282 "hardware exception %s (code=%u, data=%#x) on EVQ %u;"
284 (code == EFX_EXCEPTION_RX_RECOVERY) ? "RX_RECOVERY" :
285 (code == EFX_EXCEPTION_RX_DSC_ERROR) ? "RX_DSC_ERROR" :
286 (code == EFX_EXCEPTION_TX_DSC_ERROR) ? "TX_DSC_ERROR" :
287 (code == EFX_EXCEPTION_FWALERT_SRAM) ? "FWALERT_SRAM" :
288 (code == EFX_EXCEPTION_UNKNOWN_FWALERT) ? "UNKNOWN_FWALERT" :
289 (code == EFX_EXCEPTION_RX_ERROR) ? "RX_ERROR" :
290 (code == EFX_EXCEPTION_TX_ERROR) ? "TX_ERROR" :
291 (code == EFX_EXCEPTION_EV_ERROR) ? "EV_ERROR" :
293 code, data, evq->evq_index);
299 sfc_ev_nop_rxq_flush_done(void *arg, uint32_t rxq_hw_index)
301 struct sfc_evq *evq = arg;
303 sfc_err(evq->sa, "EVQ %u unexpected RxQ %u flush done",
304 evq->evq_index, rxq_hw_index);
309 sfc_ev_rxq_flush_done(void *arg, __rte_unused uint32_t rxq_hw_index)
311 struct sfc_evq *evq = arg;
312 struct sfc_dp_rxq *dp_rxq;
315 dp_rxq = evq->dp_rxq;
316 SFC_ASSERT(dp_rxq != NULL);
318 rxq = sfc_rxq_by_dp_rxq(dp_rxq);
319 SFC_ASSERT(rxq != NULL);
320 SFC_ASSERT(rxq->hw_index == rxq_hw_index);
321 SFC_ASSERT(rxq->evq == evq);
324 sfc_rx_qflush_done(sfc_rxq_info_by_dp_rxq(dp_rxq));
330 sfc_ev_nop_rxq_flush_failed(void *arg, uint32_t rxq_hw_index)
332 struct sfc_evq *evq = arg;
334 sfc_err(evq->sa, "EVQ %u unexpected RxQ %u flush failed",
335 evq->evq_index, rxq_hw_index);
340 sfc_ev_rxq_flush_failed(void *arg, __rte_unused uint32_t rxq_hw_index)
342 struct sfc_evq *evq = arg;
343 struct sfc_dp_rxq *dp_rxq;
346 dp_rxq = evq->dp_rxq;
347 SFC_ASSERT(dp_rxq != NULL);
349 rxq = sfc_rxq_by_dp_rxq(dp_rxq);
350 SFC_ASSERT(rxq != NULL);
351 SFC_ASSERT(rxq->hw_index == rxq_hw_index);
352 SFC_ASSERT(rxq->evq == evq);
355 sfc_rx_qflush_failed(sfc_rxq_info_by_dp_rxq(dp_rxq));
361 sfc_ev_nop_txq_flush_done(void *arg, uint32_t txq_hw_index)
363 struct sfc_evq *evq = arg;
365 sfc_err(evq->sa, "EVQ %u unexpected TxQ %u flush done",
366 evq->evq_index, txq_hw_index);
371 sfc_ev_txq_flush_done(void *arg, __rte_unused uint32_t txq_hw_index)
373 struct sfc_evq *evq = arg;
374 struct sfc_dp_txq *dp_txq;
377 dp_txq = evq->dp_txq;
378 SFC_ASSERT(dp_txq != NULL);
380 txq = sfc_txq_by_dp_txq(dp_txq);
381 SFC_ASSERT(txq != NULL);
382 SFC_ASSERT(txq->hw_index == txq_hw_index);
383 SFC_ASSERT(txq->evq == evq);
386 sfc_tx_qflush_done(sfc_txq_info_by_dp_txq(dp_txq));
392 sfc_ev_software(void *arg, uint16_t magic)
394 struct sfc_evq *evq = arg;
396 sfc_err(evq->sa, "EVQ %u unexpected software event magic=%#.4x",
397 evq->evq_index, magic);
402 sfc_ev_sram(void *arg, uint32_t code)
404 struct sfc_evq *evq = arg;
406 sfc_err(evq->sa, "EVQ %u unexpected SRAM event code=%u",
407 evq->evq_index, code);
412 sfc_ev_wake_up(void *arg, uint32_t index)
414 struct sfc_evq *evq = arg;
416 sfc_err(evq->sa, "EVQ %u unexpected wake up event index=%u",
417 evq->evq_index, index);
422 sfc_ev_timer(void *arg, uint32_t index)
424 struct sfc_evq *evq = arg;
426 sfc_err(evq->sa, "EVQ %u unexpected timer event index=%u",
427 evq->evq_index, index);
432 sfc_ev_nop_link_change(void *arg, __rte_unused efx_link_mode_t link_mode)
434 struct sfc_evq *evq = arg;
436 sfc_err(evq->sa, "EVQ %u unexpected link change event",
442 sfc_ev_link_change(void *arg, efx_link_mode_t link_mode)
444 struct sfc_evq *evq = arg;
445 struct sfc_adapter *sa = evq->sa;
446 struct rte_eth_link new_link;
448 sfc_port_link_mode_to_info(link_mode, &new_link);
449 if (rte_eth_linkstatus_set(sa->eth_dev, &new_link) == 0)
450 evq->sa->port.lsc_seq++;
455 static const efx_ev_callbacks_t sfc_ev_callbacks = {
456 .eec_initialized = sfc_ev_initialized,
457 .eec_rx = sfc_ev_nop_rx,
458 .eec_rx_packets = sfc_ev_nop_rx_packets,
459 .eec_rx_ps = sfc_ev_nop_rx_ps,
460 .eec_tx = sfc_ev_nop_tx,
461 .eec_exception = sfc_ev_exception,
462 .eec_rxq_flush_done = sfc_ev_nop_rxq_flush_done,
463 .eec_rxq_flush_failed = sfc_ev_nop_rxq_flush_failed,
464 .eec_txq_flush_done = sfc_ev_nop_txq_flush_done,
465 .eec_software = sfc_ev_software,
466 .eec_sram = sfc_ev_sram,
467 .eec_wake_up = sfc_ev_wake_up,
468 .eec_timer = sfc_ev_timer,
469 .eec_link_change = sfc_ev_link_change,
472 static const efx_ev_callbacks_t sfc_ev_callbacks_efx_rx = {
473 .eec_initialized = sfc_ev_initialized,
474 .eec_rx = sfc_ev_efx_rx,
475 .eec_rx_packets = sfc_ev_nop_rx_packets,
476 .eec_rx_ps = sfc_ev_nop_rx_ps,
477 .eec_tx = sfc_ev_nop_tx,
478 .eec_exception = sfc_ev_exception,
479 .eec_rxq_flush_done = sfc_ev_rxq_flush_done,
480 .eec_rxq_flush_failed = sfc_ev_rxq_flush_failed,
481 .eec_txq_flush_done = sfc_ev_nop_txq_flush_done,
482 .eec_software = sfc_ev_software,
483 .eec_sram = sfc_ev_sram,
484 .eec_wake_up = sfc_ev_wake_up,
485 .eec_timer = sfc_ev_timer,
486 .eec_link_change = sfc_ev_nop_link_change,
489 static const efx_ev_callbacks_t sfc_ev_callbacks_dp_rx = {
490 .eec_initialized = sfc_ev_initialized,
491 .eec_rx = sfc_ev_dp_rx,
492 .eec_rx_packets = sfc_ev_dp_rx_packets,
493 .eec_rx_ps = sfc_ev_dp_rx_ps,
494 .eec_tx = sfc_ev_nop_tx,
495 .eec_exception = sfc_ev_exception,
496 .eec_rxq_flush_done = sfc_ev_rxq_flush_done,
497 .eec_rxq_flush_failed = sfc_ev_rxq_flush_failed,
498 .eec_txq_flush_done = sfc_ev_nop_txq_flush_done,
499 .eec_software = sfc_ev_software,
500 .eec_sram = sfc_ev_sram,
501 .eec_wake_up = sfc_ev_wake_up,
502 .eec_timer = sfc_ev_timer,
503 .eec_link_change = sfc_ev_nop_link_change,
506 static const efx_ev_callbacks_t sfc_ev_callbacks_efx_tx = {
507 .eec_initialized = sfc_ev_initialized,
508 .eec_rx = sfc_ev_nop_rx,
509 .eec_rx_packets = sfc_ev_nop_rx_packets,
510 .eec_rx_ps = sfc_ev_nop_rx_ps,
512 .eec_exception = sfc_ev_exception,
513 .eec_rxq_flush_done = sfc_ev_nop_rxq_flush_done,
514 .eec_rxq_flush_failed = sfc_ev_nop_rxq_flush_failed,
515 .eec_txq_flush_done = sfc_ev_txq_flush_done,
516 .eec_software = sfc_ev_software,
517 .eec_sram = sfc_ev_sram,
518 .eec_wake_up = sfc_ev_wake_up,
519 .eec_timer = sfc_ev_timer,
520 .eec_link_change = sfc_ev_nop_link_change,
523 static const efx_ev_callbacks_t sfc_ev_callbacks_dp_tx = {
524 .eec_initialized = sfc_ev_initialized,
525 .eec_rx = sfc_ev_nop_rx,
526 .eec_rx_packets = sfc_ev_nop_rx_packets,
527 .eec_rx_ps = sfc_ev_nop_rx_ps,
528 .eec_tx = sfc_ev_dp_tx,
529 .eec_exception = sfc_ev_exception,
530 .eec_rxq_flush_done = sfc_ev_nop_rxq_flush_done,
531 .eec_rxq_flush_failed = sfc_ev_nop_rxq_flush_failed,
532 .eec_txq_flush_done = sfc_ev_txq_flush_done,
533 .eec_software = sfc_ev_software,
534 .eec_sram = sfc_ev_sram,
535 .eec_wake_up = sfc_ev_wake_up,
536 .eec_timer = sfc_ev_timer,
537 .eec_link_change = sfc_ev_nop_link_change,
542 sfc_ev_qpoll(struct sfc_evq *evq)
544 SFC_ASSERT(evq->init_state == SFC_EVQ_STARTED ||
545 evq->init_state == SFC_EVQ_STARTING);
547 /* Synchronize the DMA memory for reading not required */
549 efx_ev_qpoll(evq->common, &evq->read_ptr, evq->callbacks, evq);
551 if (unlikely(evq->exception) && sfc_adapter_trylock(evq->sa)) {
552 struct sfc_adapter *sa = evq->sa;
555 if (evq->dp_rxq != NULL) {
556 unsigned int rxq_sw_index;
558 rxq_sw_index = evq->dp_rxq->dpq.queue_id;
561 "restart RxQ %u because of exception on its EvQ %u",
562 rxq_sw_index, evq->evq_index);
564 sfc_rx_qstop(sa, rxq_sw_index);
565 rc = sfc_rx_qstart(sa, rxq_sw_index);
567 sfc_err(sa, "cannot restart RxQ %u",
571 if (evq->dp_txq != NULL) {
572 unsigned int txq_sw_index;
574 txq_sw_index = evq->dp_txq->dpq.queue_id;
577 "restart TxQ %u because of exception on its EvQ %u",
578 txq_sw_index, evq->evq_index);
580 sfc_tx_qstop(sa, txq_sw_index);
581 rc = sfc_tx_qstart(sa, txq_sw_index);
583 sfc_err(sa, "cannot restart TxQ %u",
588 sfc_panic(sa, "unrecoverable exception on EvQ %u",
591 sfc_adapter_unlock(sa);
594 /* Poll-mode driver does not re-prime the event queue for interrupts */
598 sfc_ev_mgmt_qpoll(struct sfc_adapter *sa)
600 if (rte_spinlock_trylock(&sa->mgmt_evq_lock)) {
601 if (sa->mgmt_evq_running)
602 sfc_ev_qpoll(sa->mgmt_evq);
604 rte_spinlock_unlock(&sa->mgmt_evq_lock);
609 sfc_ev_qprime(struct sfc_evq *evq)
611 SFC_ASSERT(evq->init_state == SFC_EVQ_STARTED);
612 return efx_ev_qprime(evq->common, evq->read_ptr);
615 /* Event queue HW index allocation scheme is described in sfc_ev.h. */
617 sfc_ev_qstart(struct sfc_evq *evq, unsigned int hw_index)
619 struct sfc_adapter *sa = evq->sa;
621 uint32_t evq_flags = sa->evq_flags;
622 unsigned int total_delay_us;
623 unsigned int delay_us;
626 sfc_log_init(sa, "hw_index=%u", hw_index);
630 evq->evq_index = hw_index;
632 /* Clear all events */
633 (void)memset((void *)esmp->esm_base, 0xff,
634 efx_evq_size(sa->nic, evq->entries, evq_flags));
636 if ((sa->intr.lsc_intr && hw_index == sa->mgmt_evq_index) ||
637 (sa->intr.rxq_intr && evq->dp_rxq != NULL))
638 evq_flags |= EFX_EVQ_FLAGS_NOTIFY_INTERRUPT;
640 evq_flags |= EFX_EVQ_FLAGS_NOTIFY_DISABLED;
642 evq->init_state = SFC_EVQ_STARTING;
644 /* Create the common code event queue */
645 rc = efx_ev_qcreate(sa->nic, hw_index, esmp, evq->entries,
646 0 /* unused on EF10 */, 0, evq_flags,
649 goto fail_ev_qcreate;
651 SFC_ASSERT(evq->dp_rxq == NULL || evq->dp_txq == NULL);
652 if (evq->dp_rxq != 0) {
653 if (strcmp(sa->priv.dp_rx->dp.name,
654 SFC_KVARG_DATAPATH_EFX) == 0)
655 evq->callbacks = &sfc_ev_callbacks_efx_rx;
657 evq->callbacks = &sfc_ev_callbacks_dp_rx;
658 } else if (evq->dp_txq != 0) {
659 if (strcmp(sa->priv.dp_tx->dp.name,
660 SFC_KVARG_DATAPATH_EFX) == 0)
661 evq->callbacks = &sfc_ev_callbacks_efx_tx;
663 evq->callbacks = &sfc_ev_callbacks_dp_tx;
665 evq->callbacks = &sfc_ev_callbacks;
669 * Poll once to ensure that eec_initialized callback is invoked in
670 * case if the hardware does not support INIT_DONE events. If the
671 * hardware supports INIT_DONE events, this will do nothing, and the
672 * corresponding event will be processed by sfc_ev_qpoll() below.
674 efx_ev_qcreate_check_init_done(evq->common, evq->callbacks, evq);
676 /* Wait for the initialization event */
678 delay_us = SFC_EVQ_INIT_BACKOFF_START_US;
680 (void)sfc_ev_qpoll(evq);
682 /* Check to see if the initialization complete indication
683 * posted by the hardware.
685 if (evq->init_state == SFC_EVQ_STARTED)
688 /* Give event queue some time to init */
689 rte_delay_us(delay_us);
691 total_delay_us += delay_us;
693 /* Exponential backoff */
695 if (delay_us > SFC_EVQ_INIT_BACKOFF_MAX_US)
696 delay_us = SFC_EVQ_INIT_BACKOFF_MAX_US;
698 } while (total_delay_us < SFC_EVQ_INIT_TIMEOUT_US);
707 efx_ev_qdestroy(evq->common);
710 evq->init_state = SFC_EVQ_INITIALIZED;
711 sfc_log_init(sa, "failed %d", rc);
716 sfc_ev_qstop(struct sfc_evq *evq)
721 sfc_log_init(evq->sa, "hw_index=%u", evq->evq_index);
723 if (evq->init_state != SFC_EVQ_STARTED)
726 evq->init_state = SFC_EVQ_INITIALIZED;
727 evq->callbacks = NULL;
729 evq->exception = B_FALSE;
731 efx_ev_qdestroy(evq->common);
737 sfc_ev_mgmt_periodic_qpoll(void *arg)
739 struct sfc_adapter *sa = arg;
742 sfc_ev_mgmt_qpoll(sa);
744 rc = rte_eal_alarm_set(SFC_MGMT_EV_QPOLL_PERIOD_US,
745 sfc_ev_mgmt_periodic_qpoll, sa);
746 if (rc == -ENOTSUP) {
747 sfc_warn(sa, "alarms are not supported");
748 sfc_warn(sa, "management EVQ must be polled indirectly using no-wait link status update");
749 } else if (rc != 0) {
751 "cannot rearm management EVQ polling alarm (rc=%d)",
757 sfc_ev_mgmt_periodic_qpoll_start(struct sfc_adapter *sa)
759 sfc_ev_mgmt_periodic_qpoll(sa);
763 sfc_ev_mgmt_periodic_qpoll_stop(struct sfc_adapter *sa)
765 rte_eal_alarm_cancel(sfc_ev_mgmt_periodic_qpoll, sa);
769 sfc_ev_start(struct sfc_adapter *sa)
773 sfc_log_init(sa, "entry");
775 rc = efx_ev_init(sa->nic);
779 /* Start management EVQ used for global events */
782 * Management event queue start polls the queue, but it cannot
783 * interfere with other polling contexts since mgmt_evq_running
786 rc = sfc_ev_qstart(sa->mgmt_evq, sa->mgmt_evq_index);
788 goto fail_mgmt_evq_start;
790 rte_spinlock_lock(&sa->mgmt_evq_lock);
791 sa->mgmt_evq_running = true;
792 rte_spinlock_unlock(&sa->mgmt_evq_lock);
794 if (sa->intr.lsc_intr) {
795 rc = sfc_ev_qprime(sa->mgmt_evq);
797 goto fail_mgmt_evq_prime;
801 * Start management EVQ polling. If interrupts are disabled
802 * (not used), it is required to process link status change
803 * and other device level events to avoid unrecoverable
804 * error because the event queue overflow.
806 sfc_ev_mgmt_periodic_qpoll_start(sa);
809 * Rx/Tx event queues are started/stopped when corresponding
810 * Rx/Tx queue is started/stopped.
816 sfc_ev_qstop(sa->mgmt_evq);
819 efx_ev_fini(sa->nic);
822 sfc_log_init(sa, "failed %d", rc);
827 sfc_ev_stop(struct sfc_adapter *sa)
829 sfc_log_init(sa, "entry");
831 sfc_ev_mgmt_periodic_qpoll_stop(sa);
833 rte_spinlock_lock(&sa->mgmt_evq_lock);
834 sa->mgmt_evq_running = false;
835 rte_spinlock_unlock(&sa->mgmt_evq_lock);
837 sfc_ev_qstop(sa->mgmt_evq);
839 efx_ev_fini(sa->nic);
843 sfc_ev_qinit(struct sfc_adapter *sa,
844 enum sfc_evq_type type, unsigned int type_index,
845 unsigned int entries, int socket_id, struct sfc_evq **evqp)
850 sfc_log_init(sa, "type=%s type_index=%u",
851 sfc_evq_type2str(type), type_index);
853 SFC_ASSERT(rte_is_power_of_2(entries));
856 evq = rte_zmalloc_socket("sfc-evq", sizeof(*evq), RTE_CACHE_LINE_SIZE,
863 evq->entries = entries;
865 /* Allocate DMA space */
866 rc = sfc_dma_alloc(sa, sfc_evq_type2str(type), type_index,
867 efx_evq_size(sa->nic, evq->entries, sa->evq_flags),
868 socket_id, &evq->mem);
872 evq->init_state = SFC_EVQ_INITIALIZED;
885 sfc_log_init(sa, "failed %d", rc);
890 sfc_ev_qfini(struct sfc_evq *evq)
892 struct sfc_adapter *sa = evq->sa;
894 SFC_ASSERT(evq->init_state == SFC_EVQ_INITIALIZED);
896 sfc_dma_free(sa, &evq->mem);
900 SFC_ASSERT(sa->evq_count > 0);
905 sfc_kvarg_perf_profile_handler(__rte_unused const char *key,
906 const char *value_str, void *opaque)
908 uint32_t *value = opaque;
910 if (strcasecmp(value_str, SFC_KVARG_PERF_PROFILE_THROUGHPUT) == 0)
911 *value = EFX_EVQ_FLAGS_TYPE_THROUGHPUT;
912 else if (strcasecmp(value_str, SFC_KVARG_PERF_PROFILE_LOW_LATENCY) == 0)
913 *value = EFX_EVQ_FLAGS_TYPE_LOW_LATENCY;
914 else if (strcasecmp(value_str, SFC_KVARG_PERF_PROFILE_AUTO) == 0)
915 *value = EFX_EVQ_FLAGS_TYPE_AUTO;
923 sfc_ev_attach(struct sfc_adapter *sa)
927 sfc_log_init(sa, "entry");
929 sa->evq_flags = EFX_EVQ_FLAGS_TYPE_THROUGHPUT;
930 rc = sfc_kvargs_process(sa, SFC_KVARG_PERF_PROFILE,
931 sfc_kvarg_perf_profile_handler,
934 sfc_err(sa, "invalid %s parameter value",
935 SFC_KVARG_PERF_PROFILE);
936 goto fail_kvarg_perf_profile;
939 sa->mgmt_evq_index = 0;
940 rte_spinlock_init(&sa->mgmt_evq_lock);
942 rc = sfc_ev_qinit(sa, SFC_EVQ_TYPE_MGMT, 0, sa->evq_min_entries,
943 sa->socket_id, &sa->mgmt_evq);
945 goto fail_mgmt_evq_init;
948 * Rx/Tx event queues are created/destroyed when corresponding
949 * Rx/Tx queue is created/destroyed.
956 fail_kvarg_perf_profile:
957 sfc_log_init(sa, "failed %d", rc);
962 sfc_ev_detach(struct sfc_adapter *sa)
964 sfc_log_init(sa, "entry");
966 sfc_ev_qfini(sa->mgmt_evq);
968 if (sa->evq_count != 0)
969 sfc_err(sa, "%u EvQs are not destroyed before detach",