1 /* SPDX-License-Identifier: BSD-3-Clause
3 * Copyright (c) 2016-2018 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->dp_rx->qrx_ev != NULL);
162 return evq->sa->dp_rx->qrx_ev(dp_rxq, id);
166 sfc_ev_nop_rx_ps(void *arg, uint32_t label, uint32_t id,
167 uint32_t pkt_count, uint16_t flags)
169 struct sfc_evq *evq = arg;
172 "EVQ %u unexpected packed stream Rx event label=%u id=%#x pkt_count=%u flags=%#x",
173 evq->evq_index, label, id, pkt_count, flags);
177 /* It is not actually used on datapath, but required on RxQ flush */
179 sfc_ev_dp_rx_ps(void *arg, __rte_unused uint32_t label, uint32_t id,
180 __rte_unused uint32_t pkt_count, __rte_unused uint16_t flags)
182 struct sfc_evq *evq = arg;
183 struct sfc_dp_rxq *dp_rxq;
185 dp_rxq = evq->dp_rxq;
186 SFC_ASSERT(dp_rxq != NULL);
188 if (evq->sa->dp_rx->qrx_ps_ev != NULL)
189 return evq->sa->dp_rx->qrx_ps_ev(dp_rxq, id);
195 sfc_ev_nop_tx(void *arg, uint32_t label, uint32_t id)
197 struct sfc_evq *evq = arg;
199 sfc_err(evq->sa, "EVQ %u unexpected Tx event label=%u id=%#x",
200 evq->evq_index, label, id);
205 sfc_ev_tx(void *arg, __rte_unused uint32_t label, uint32_t id)
207 struct sfc_evq *evq = arg;
208 struct sfc_dp_txq *dp_txq;
209 struct sfc_efx_txq *txq;
213 dp_txq = evq->dp_txq;
214 SFC_ASSERT(dp_txq != NULL);
216 txq = sfc_efx_txq_by_dp_txq(dp_txq);
217 SFC_ASSERT(txq->evq == evq);
219 if (unlikely((txq->flags & SFC_EFX_TXQ_FLAG_STARTED) == 0))
222 stop = (id + 1) & txq->ptr_mask;
223 id = txq->pending & txq->ptr_mask;
225 delta = (stop >= id) ? (stop - id) : (txq->ptr_mask + 1 - id + stop);
227 txq->pending += delta;
234 sfc_ev_dp_tx(void *arg, __rte_unused uint32_t label, uint32_t id)
236 struct sfc_evq *evq = arg;
237 struct sfc_dp_txq *dp_txq;
239 dp_txq = evq->dp_txq;
240 SFC_ASSERT(dp_txq != NULL);
242 SFC_ASSERT(evq->sa->dp_tx->qtx_ev != NULL);
243 return evq->sa->dp_tx->qtx_ev(dp_txq, id);
247 sfc_ev_exception(void *arg, uint32_t code, __rte_unused uint32_t data)
249 struct sfc_evq *evq = arg;
251 if (code == EFX_EXCEPTION_UNKNOWN_SENSOREVT)
254 evq->exception = B_TRUE;
256 "hardware exception %s (code=%u, data=%#x) on EVQ %u;"
258 (code == EFX_EXCEPTION_RX_RECOVERY) ? "RX_RECOVERY" :
259 (code == EFX_EXCEPTION_RX_DSC_ERROR) ? "RX_DSC_ERROR" :
260 (code == EFX_EXCEPTION_TX_DSC_ERROR) ? "TX_DSC_ERROR" :
261 (code == EFX_EXCEPTION_FWALERT_SRAM) ? "FWALERT_SRAM" :
262 (code == EFX_EXCEPTION_UNKNOWN_FWALERT) ? "UNKNOWN_FWALERT" :
263 (code == EFX_EXCEPTION_RX_ERROR) ? "RX_ERROR" :
264 (code == EFX_EXCEPTION_TX_ERROR) ? "TX_ERROR" :
265 (code == EFX_EXCEPTION_EV_ERROR) ? "EV_ERROR" :
267 code, data, evq->evq_index);
273 sfc_ev_nop_rxq_flush_done(void *arg, uint32_t rxq_hw_index)
275 struct sfc_evq *evq = arg;
277 sfc_err(evq->sa, "EVQ %u unexpected RxQ %u flush done",
278 evq->evq_index, rxq_hw_index);
283 sfc_ev_rxq_flush_done(void *arg, __rte_unused uint32_t rxq_hw_index)
285 struct sfc_evq *evq = arg;
286 struct sfc_dp_rxq *dp_rxq;
289 dp_rxq = evq->dp_rxq;
290 SFC_ASSERT(dp_rxq != NULL);
292 rxq = sfc_rxq_by_dp_rxq(dp_rxq);
293 SFC_ASSERT(rxq != NULL);
294 SFC_ASSERT(rxq->hw_index == rxq_hw_index);
295 SFC_ASSERT(rxq->evq == evq);
296 sfc_rx_qflush_done(rxq);
302 sfc_ev_nop_rxq_flush_failed(void *arg, uint32_t rxq_hw_index)
304 struct sfc_evq *evq = arg;
306 sfc_err(evq->sa, "EVQ %u unexpected RxQ %u flush failed",
307 evq->evq_index, rxq_hw_index);
312 sfc_ev_rxq_flush_failed(void *arg, __rte_unused uint32_t rxq_hw_index)
314 struct sfc_evq *evq = arg;
315 struct sfc_dp_rxq *dp_rxq;
318 dp_rxq = evq->dp_rxq;
319 SFC_ASSERT(dp_rxq != NULL);
321 rxq = sfc_rxq_by_dp_rxq(dp_rxq);
322 SFC_ASSERT(rxq != NULL);
323 SFC_ASSERT(rxq->hw_index == rxq_hw_index);
324 SFC_ASSERT(rxq->evq == evq);
325 sfc_rx_qflush_failed(rxq);
331 sfc_ev_nop_txq_flush_done(void *arg, uint32_t txq_hw_index)
333 struct sfc_evq *evq = arg;
335 sfc_err(evq->sa, "EVQ %u unexpected TxQ %u flush done",
336 evq->evq_index, txq_hw_index);
341 sfc_ev_txq_flush_done(void *arg, __rte_unused uint32_t txq_hw_index)
343 struct sfc_evq *evq = arg;
344 struct sfc_dp_txq *dp_txq;
347 dp_txq = evq->dp_txq;
348 SFC_ASSERT(dp_txq != NULL);
350 txq = sfc_txq_by_dp_txq(dp_txq);
351 SFC_ASSERT(txq != NULL);
352 SFC_ASSERT(txq->hw_index == txq_hw_index);
353 SFC_ASSERT(txq->evq == evq);
354 sfc_tx_qflush_done(txq);
360 sfc_ev_software(void *arg, uint16_t magic)
362 struct sfc_evq *evq = arg;
364 sfc_err(evq->sa, "EVQ %u unexpected software event magic=%#.4x",
365 evq->evq_index, magic);
370 sfc_ev_sram(void *arg, uint32_t code)
372 struct sfc_evq *evq = arg;
374 sfc_err(evq->sa, "EVQ %u unexpected SRAM event code=%u",
375 evq->evq_index, code);
380 sfc_ev_wake_up(void *arg, uint32_t index)
382 struct sfc_evq *evq = arg;
384 sfc_err(evq->sa, "EVQ %u unexpected wake up event index=%u",
385 evq->evq_index, index);
390 sfc_ev_timer(void *arg, uint32_t index)
392 struct sfc_evq *evq = arg;
394 sfc_err(evq->sa, "EVQ %u unexpected timer event index=%u",
395 evq->evq_index, index);
400 sfc_ev_nop_link_change(void *arg, __rte_unused efx_link_mode_t link_mode)
402 struct sfc_evq *evq = arg;
404 sfc_err(evq->sa, "EVQ %u unexpected link change event",
410 sfc_ev_link_change(void *arg, efx_link_mode_t link_mode)
412 struct sfc_evq *evq = arg;
413 struct sfc_adapter *sa = evq->sa;
414 struct rte_eth_link new_link;
416 sfc_port_link_mode_to_info(link_mode, &new_link);
417 if (rte_eth_linkstatus_set(sa->eth_dev, &new_link))
418 evq->sa->port.lsc_seq++;
423 static const efx_ev_callbacks_t sfc_ev_callbacks = {
424 .eec_initialized = sfc_ev_initialized,
425 .eec_rx = sfc_ev_nop_rx,
426 .eec_rx_ps = sfc_ev_nop_rx_ps,
427 .eec_tx = sfc_ev_nop_tx,
428 .eec_exception = sfc_ev_exception,
429 .eec_rxq_flush_done = sfc_ev_nop_rxq_flush_done,
430 .eec_rxq_flush_failed = sfc_ev_nop_rxq_flush_failed,
431 .eec_txq_flush_done = sfc_ev_nop_txq_flush_done,
432 .eec_software = sfc_ev_software,
433 .eec_sram = sfc_ev_sram,
434 .eec_wake_up = sfc_ev_wake_up,
435 .eec_timer = sfc_ev_timer,
436 .eec_link_change = sfc_ev_link_change,
439 static const efx_ev_callbacks_t sfc_ev_callbacks_efx_rx = {
440 .eec_initialized = sfc_ev_initialized,
441 .eec_rx = sfc_ev_efx_rx,
442 .eec_rx_ps = sfc_ev_nop_rx_ps,
443 .eec_tx = sfc_ev_nop_tx,
444 .eec_exception = sfc_ev_exception,
445 .eec_rxq_flush_done = sfc_ev_rxq_flush_done,
446 .eec_rxq_flush_failed = sfc_ev_rxq_flush_failed,
447 .eec_txq_flush_done = sfc_ev_nop_txq_flush_done,
448 .eec_software = sfc_ev_software,
449 .eec_sram = sfc_ev_sram,
450 .eec_wake_up = sfc_ev_wake_up,
451 .eec_timer = sfc_ev_timer,
452 .eec_link_change = sfc_ev_nop_link_change,
455 static const efx_ev_callbacks_t sfc_ev_callbacks_dp_rx = {
456 .eec_initialized = sfc_ev_initialized,
457 .eec_rx = sfc_ev_dp_rx,
458 .eec_rx_ps = sfc_ev_dp_rx_ps,
459 .eec_tx = sfc_ev_nop_tx,
460 .eec_exception = sfc_ev_exception,
461 .eec_rxq_flush_done = sfc_ev_rxq_flush_done,
462 .eec_rxq_flush_failed = sfc_ev_rxq_flush_failed,
463 .eec_txq_flush_done = sfc_ev_nop_txq_flush_done,
464 .eec_software = sfc_ev_software,
465 .eec_sram = sfc_ev_sram,
466 .eec_wake_up = sfc_ev_wake_up,
467 .eec_timer = sfc_ev_timer,
468 .eec_link_change = sfc_ev_nop_link_change,
471 static const efx_ev_callbacks_t sfc_ev_callbacks_efx_tx = {
472 .eec_initialized = sfc_ev_initialized,
473 .eec_rx = sfc_ev_nop_rx,
474 .eec_rx_ps = sfc_ev_nop_rx_ps,
476 .eec_exception = sfc_ev_exception,
477 .eec_rxq_flush_done = sfc_ev_nop_rxq_flush_done,
478 .eec_rxq_flush_failed = sfc_ev_nop_rxq_flush_failed,
479 .eec_txq_flush_done = sfc_ev_txq_flush_done,
480 .eec_software = sfc_ev_software,
481 .eec_sram = sfc_ev_sram,
482 .eec_wake_up = sfc_ev_wake_up,
483 .eec_timer = sfc_ev_timer,
484 .eec_link_change = sfc_ev_nop_link_change,
487 static const efx_ev_callbacks_t sfc_ev_callbacks_dp_tx = {
488 .eec_initialized = sfc_ev_initialized,
489 .eec_rx = sfc_ev_nop_rx,
490 .eec_rx_ps = sfc_ev_nop_rx_ps,
491 .eec_tx = sfc_ev_dp_tx,
492 .eec_exception = sfc_ev_exception,
493 .eec_rxq_flush_done = sfc_ev_nop_rxq_flush_done,
494 .eec_rxq_flush_failed = sfc_ev_nop_rxq_flush_failed,
495 .eec_txq_flush_done = sfc_ev_txq_flush_done,
496 .eec_software = sfc_ev_software,
497 .eec_sram = sfc_ev_sram,
498 .eec_wake_up = sfc_ev_wake_up,
499 .eec_timer = sfc_ev_timer,
500 .eec_link_change = sfc_ev_nop_link_change,
505 sfc_ev_qpoll(struct sfc_evq *evq)
507 SFC_ASSERT(evq->init_state == SFC_EVQ_STARTED ||
508 evq->init_state == SFC_EVQ_STARTING);
510 /* Synchronize the DMA memory for reading not required */
512 efx_ev_qpoll(evq->common, &evq->read_ptr, evq->callbacks, evq);
514 if (unlikely(evq->exception) && sfc_adapter_trylock(evq->sa)) {
515 struct sfc_adapter *sa = evq->sa;
518 if (evq->dp_rxq != NULL) {
519 unsigned int rxq_sw_index;
521 rxq_sw_index = evq->dp_rxq->dpq.queue_id;
524 "restart RxQ %u because of exception on its EvQ %u",
525 rxq_sw_index, evq->evq_index);
527 sfc_rx_qstop(sa, rxq_sw_index);
528 rc = sfc_rx_qstart(sa, rxq_sw_index);
530 sfc_err(sa, "cannot restart RxQ %u",
534 if (evq->dp_txq != NULL) {
535 unsigned int txq_sw_index;
537 txq_sw_index = evq->dp_txq->dpq.queue_id;
540 "restart TxQ %u because of exception on its EvQ %u",
541 txq_sw_index, evq->evq_index);
543 sfc_tx_qstop(sa, txq_sw_index);
544 rc = sfc_tx_qstart(sa, txq_sw_index);
546 sfc_err(sa, "cannot restart TxQ %u",
551 sfc_panic(sa, "unrecoverable exception on EvQ %u",
554 sfc_adapter_unlock(sa);
557 /* Poll-mode driver does not re-prime the event queue for interrupts */
561 sfc_ev_mgmt_qpoll(struct sfc_adapter *sa)
563 if (rte_spinlock_trylock(&sa->mgmt_evq_lock)) {
564 if (sa->mgmt_evq_running)
565 sfc_ev_qpoll(sa->mgmt_evq);
567 rte_spinlock_unlock(&sa->mgmt_evq_lock);
572 sfc_ev_qprime(struct sfc_evq *evq)
574 SFC_ASSERT(evq->init_state == SFC_EVQ_STARTED);
575 return efx_ev_qprime(evq->common, evq->read_ptr);
578 /* Event queue HW index allocation scheme is described in sfc_ev.h. */
580 sfc_ev_qstart(struct sfc_evq *evq, unsigned int hw_index)
582 struct sfc_adapter *sa = evq->sa;
584 uint32_t evq_flags = sa->evq_flags;
585 unsigned int total_delay_us;
586 unsigned int delay_us;
589 sfc_log_init(sa, "hw_index=%u", hw_index);
593 evq->evq_index = hw_index;
595 /* Clear all events */
596 (void)memset((void *)esmp->esm_base, 0xff, EFX_EVQ_SIZE(evq->entries));
598 if (sa->intr.lsc_intr && hw_index == sa->mgmt_evq_index)
599 evq_flags |= EFX_EVQ_FLAGS_NOTIFY_INTERRUPT;
601 evq_flags |= EFX_EVQ_FLAGS_NOTIFY_DISABLED;
603 /* Create the common code event queue */
604 rc = efx_ev_qcreate(sa->nic, hw_index, esmp, evq->entries,
605 0 /* unused on EF10 */, 0, evq_flags,
608 goto fail_ev_qcreate;
610 SFC_ASSERT(evq->dp_rxq == NULL || evq->dp_txq == NULL);
611 if (evq->dp_rxq != 0) {
612 if (strcmp(sa->dp_rx->dp.name, SFC_KVARG_DATAPATH_EFX) == 0)
613 evq->callbacks = &sfc_ev_callbacks_efx_rx;
615 evq->callbacks = &sfc_ev_callbacks_dp_rx;
616 } else if (evq->dp_txq != 0) {
617 if (strcmp(sa->dp_tx->dp.name, SFC_KVARG_DATAPATH_EFX) == 0)
618 evq->callbacks = &sfc_ev_callbacks_efx_tx;
620 evq->callbacks = &sfc_ev_callbacks_dp_tx;
622 evq->callbacks = &sfc_ev_callbacks;
625 evq->init_state = SFC_EVQ_STARTING;
627 /* Wait for the initialization event */
629 delay_us = SFC_EVQ_INIT_BACKOFF_START_US;
631 (void)sfc_ev_qpoll(evq);
633 /* Check to see if the initialization complete indication
634 * posted by the hardware.
636 if (evq->init_state == SFC_EVQ_STARTED)
639 /* Give event queue some time to init */
640 rte_delay_us(delay_us);
642 total_delay_us += delay_us;
644 /* Exponential backoff */
646 if (delay_us > SFC_EVQ_INIT_BACKOFF_MAX_US)
647 delay_us = SFC_EVQ_INIT_BACKOFF_MAX_US;
649 } while (total_delay_us < SFC_EVQ_INIT_TIMEOUT_US);
658 evq->init_state = SFC_EVQ_INITIALIZED;
659 efx_ev_qdestroy(evq->common);
662 sfc_log_init(sa, "failed %d", rc);
667 sfc_ev_qstop(struct sfc_evq *evq)
672 sfc_log_init(evq->sa, "hw_index=%u", evq->evq_index);
674 if (evq->init_state != SFC_EVQ_STARTED)
677 evq->init_state = SFC_EVQ_INITIALIZED;
678 evq->callbacks = NULL;
680 evq->exception = B_FALSE;
682 efx_ev_qdestroy(evq->common);
688 sfc_ev_mgmt_periodic_qpoll(void *arg)
690 struct sfc_adapter *sa = arg;
693 sfc_ev_mgmt_qpoll(sa);
695 rc = rte_eal_alarm_set(SFC_MGMT_EV_QPOLL_PERIOD_US,
696 sfc_ev_mgmt_periodic_qpoll, sa);
697 if (rc == -ENOTSUP) {
698 sfc_warn(sa, "alarms are not supported");
699 sfc_warn(sa, "management EVQ must be polled indirectly using no-wait link status update");
700 } else if (rc != 0) {
702 "cannot rearm management EVQ polling alarm (rc=%d)",
708 sfc_ev_mgmt_periodic_qpoll_start(struct sfc_adapter *sa)
710 sfc_ev_mgmt_periodic_qpoll(sa);
714 sfc_ev_mgmt_periodic_qpoll_stop(struct sfc_adapter *sa)
716 rte_eal_alarm_cancel(sfc_ev_mgmt_periodic_qpoll, sa);
720 sfc_ev_start(struct sfc_adapter *sa)
724 sfc_log_init(sa, "entry");
726 rc = efx_ev_init(sa->nic);
730 /* Start management EVQ used for global events */
733 * Management event queue start polls the queue, but it cannot
734 * interfere with other polling contexts since mgmt_evq_running
737 rc = sfc_ev_qstart(sa->mgmt_evq, sa->mgmt_evq_index);
739 goto fail_mgmt_evq_start;
741 rte_spinlock_lock(&sa->mgmt_evq_lock);
742 sa->mgmt_evq_running = true;
743 rte_spinlock_unlock(&sa->mgmt_evq_lock);
745 if (sa->intr.lsc_intr) {
746 rc = sfc_ev_qprime(sa->mgmt_evq);
748 goto fail_mgmt_evq_prime;
752 * Start management EVQ polling. If interrupts are disabled
753 * (not used), it is required to process link status change
754 * and other device level events to avoid unrecoverable
755 * error because the event queue overflow.
757 sfc_ev_mgmt_periodic_qpoll_start(sa);
760 * Rx/Tx event queues are started/stopped when corresponding
761 * Rx/Tx queue is started/stopped.
767 sfc_ev_qstop(sa->mgmt_evq);
770 efx_ev_fini(sa->nic);
773 sfc_log_init(sa, "failed %d", rc);
778 sfc_ev_stop(struct sfc_adapter *sa)
780 sfc_log_init(sa, "entry");
782 sfc_ev_mgmt_periodic_qpoll_stop(sa);
784 rte_spinlock_lock(&sa->mgmt_evq_lock);
785 sa->mgmt_evq_running = false;
786 rte_spinlock_unlock(&sa->mgmt_evq_lock);
788 sfc_ev_qstop(sa->mgmt_evq);
790 efx_ev_fini(sa->nic);
794 sfc_ev_qinit(struct sfc_adapter *sa,
795 enum sfc_evq_type type, unsigned int type_index,
796 unsigned int entries, int socket_id, struct sfc_evq **evqp)
801 sfc_log_init(sa, "type=%s type_index=%u",
802 sfc_evq_type2str(type), type_index);
804 SFC_ASSERT(rte_is_power_of_2(entries));
807 evq = rte_zmalloc_socket("sfc-evq", sizeof(*evq), RTE_CACHE_LINE_SIZE,
814 evq->entries = entries;
816 /* Allocate DMA space */
817 rc = sfc_dma_alloc(sa, sfc_evq_type2str(type), type_index,
818 EFX_EVQ_SIZE(evq->entries), socket_id, &evq->mem);
822 evq->init_state = SFC_EVQ_INITIALIZED;
835 sfc_log_init(sa, "failed %d", rc);
840 sfc_ev_qfini(struct sfc_evq *evq)
842 struct sfc_adapter *sa = evq->sa;
844 SFC_ASSERT(evq->init_state == SFC_EVQ_INITIALIZED);
846 sfc_dma_free(sa, &evq->mem);
850 SFC_ASSERT(sa->evq_count > 0);
855 sfc_kvarg_perf_profile_handler(__rte_unused const char *key,
856 const char *value_str, void *opaque)
858 uint32_t *value = opaque;
860 if (strcasecmp(value_str, SFC_KVARG_PERF_PROFILE_THROUGHPUT) == 0)
861 *value = EFX_EVQ_FLAGS_TYPE_THROUGHPUT;
862 else if (strcasecmp(value_str, SFC_KVARG_PERF_PROFILE_LOW_LATENCY) == 0)
863 *value = EFX_EVQ_FLAGS_TYPE_LOW_LATENCY;
864 else if (strcasecmp(value_str, SFC_KVARG_PERF_PROFILE_AUTO) == 0)
865 *value = EFX_EVQ_FLAGS_TYPE_AUTO;
873 sfc_ev_attach(struct sfc_adapter *sa)
877 sfc_log_init(sa, "entry");
879 sa->evq_flags = EFX_EVQ_FLAGS_TYPE_THROUGHPUT;
880 rc = sfc_kvargs_process(sa, SFC_KVARG_PERF_PROFILE,
881 sfc_kvarg_perf_profile_handler,
884 sfc_err(sa, "invalid %s parameter value",
885 SFC_KVARG_PERF_PROFILE);
886 goto fail_kvarg_perf_profile;
889 sa->mgmt_evq_index = 0;
890 rte_spinlock_init(&sa->mgmt_evq_lock);
892 rc = sfc_ev_qinit(sa, SFC_EVQ_TYPE_MGMT, 0, SFC_MGMT_EVQ_ENTRIES,
893 sa->socket_id, &sa->mgmt_evq);
895 goto fail_mgmt_evq_init;
898 * Rx/Tx event queues are created/destroyed when corresponding
899 * Rx/Tx queue is created/destroyed.
906 fail_kvarg_perf_profile:
907 sfc_log_init(sa, "failed %d", rc);
912 sfc_ev_detach(struct sfc_adapter *sa)
914 sfc_log_init(sa, "entry");
916 sfc_ev_qfini(sa->mgmt_evq);
918 if (sa->evq_count != 0)
919 sfc_err(sa, "%u EvQs are not destroyed before detach",