4 * Copyright (c) 2016-2017 Solarflare Communications Inc.
7 * This software was jointly developed between OKTET Labs (under contract
8 * for Solarflare) and Solarflare Communications, Inc.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions are met:
13 * 1. Redistributions of source code must retain the above copyright notice,
14 * this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright notice,
16 * this list of conditions and the following disclaimer in the documentation
17 * and/or other materials provided with the distribution.
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
29 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 #include <rte_debug.h>
33 #include <rte_cycles.h>
34 #include <rte_alarm.h>
35 #include <rte_branch_prediction.h>
40 #include "sfc_debug.h"
45 #include "sfc_kvargs.h"
48 /* Initial delay when waiting for event queue init complete event */
49 #define SFC_EVQ_INIT_BACKOFF_START_US (1)
50 /* Maximum delay between event queue polling attempts */
51 #define SFC_EVQ_INIT_BACKOFF_MAX_US (10 * 1000)
52 /* Event queue init approx timeout */
53 #define SFC_EVQ_INIT_TIMEOUT_US (2 * US_PER_S)
55 /* Management event queue polling period in microseconds */
56 #define SFC_MGMT_EV_QPOLL_PERIOD_US (US_PER_S)
60 sfc_ev_initialized(void *arg)
62 struct sfc_evq *evq = arg;
64 /* Init done events may be duplicated on SFN7xxx (SFC bug 31631) */
65 SFC_ASSERT(evq->init_state == SFC_EVQ_STARTING ||
66 evq->init_state == SFC_EVQ_STARTED);
68 evq->init_state = SFC_EVQ_STARTED;
74 sfc_ev_nop_rx(void *arg, uint32_t label, uint32_t id,
75 uint32_t size, uint16_t flags)
77 struct sfc_evq *evq = arg;
80 "EVQ %u unexpected Rx event label=%u id=%#x size=%u flags=%#x",
81 evq->evq_index, label, id, size, flags);
86 sfc_ev_efx_rx(void *arg, __rte_unused uint32_t label, uint32_t id,
87 uint32_t size, uint16_t flags)
89 struct sfc_evq *evq = arg;
90 struct sfc_efx_rxq *rxq;
92 unsigned int pending_id;
95 struct sfc_efx_rx_sw_desc *rxd;
97 if (unlikely(evq->exception))
100 rxq = sfc_efx_rxq_by_dp_rxq(evq->dp_rxq);
102 SFC_ASSERT(rxq != NULL);
103 SFC_ASSERT(rxq->evq == evq);
104 SFC_ASSERT(rxq->flags & SFC_EFX_RXQ_FLAG_STARTED);
106 stop = (id + 1) & rxq->ptr_mask;
107 pending_id = rxq->pending & rxq->ptr_mask;
108 delta = (stop >= pending_id) ? (stop - pending_id) :
109 (rxq->ptr_mask + 1 - pending_id + stop);
113 * Rx event with no new descriptors done and zero length
114 * is used to abort scattered packet when there is no room
117 if (unlikely(size != 0)) {
118 evq->exception = B_TRUE;
120 "EVQ %u RxQ %u invalid RX abort "
121 "(id=%#x size=%u flags=%#x); needs restart",
122 evq->evq_index, rxq->dp.dpq.queue_id,
127 /* Add discard flag to the first fragment */
128 rxq->sw_desc[pending_id].flags |= EFX_DISCARD;
129 /* Remove continue flag from the last fragment */
130 rxq->sw_desc[id].flags &= ~EFX_PKT_CONT;
131 } else if (unlikely(delta > rxq->batch_max)) {
132 evq->exception = B_TRUE;
135 "EVQ %u RxQ %u completion out of order "
136 "(id=%#x delta=%u flags=%#x); needs restart",
137 evq->evq_index, rxq->dp.dpq.queue_id,
143 for (i = pending_id; i != stop; i = (i + 1) & rxq->ptr_mask) {
144 rxd = &rxq->sw_desc[i];
148 SFC_ASSERT(size < (1 << 16));
149 rxd->size = (uint16_t)size;
152 rxq->pending += delta;
159 sfc_ev_dp_rx(void *arg, __rte_unused uint32_t label, uint32_t id,
160 __rte_unused uint32_t size, __rte_unused uint16_t flags)
162 struct sfc_evq *evq = arg;
163 struct sfc_dp_rxq *dp_rxq;
165 dp_rxq = evq->dp_rxq;
166 SFC_ASSERT(dp_rxq != NULL);
168 SFC_ASSERT(evq->sa->dp_rx->qrx_ev != NULL);
169 return evq->sa->dp_rx->qrx_ev(dp_rxq, id);
173 sfc_ev_nop_tx(void *arg, uint32_t label, uint32_t id)
175 struct sfc_evq *evq = arg;
177 sfc_err(evq->sa, "EVQ %u unexpected Tx event label=%u id=%#x",
178 evq->evq_index, label, id);
183 sfc_ev_tx(void *arg, __rte_unused uint32_t label, uint32_t id)
185 struct sfc_evq *evq = arg;
192 SFC_ASSERT(txq != NULL);
193 SFC_ASSERT(txq->evq == evq);
195 if (unlikely((txq->state & SFC_TXQ_STARTED) == 0))
198 stop = (id + 1) & txq->ptr_mask;
199 id = txq->pending & txq->ptr_mask;
201 delta = (stop >= id) ? (stop - id) : (txq->ptr_mask + 1 - id + stop);
203 txq->pending += delta;
210 sfc_ev_exception(void *arg, __rte_unused uint32_t code,
211 __rte_unused uint32_t data)
213 struct sfc_evq *evq = arg;
215 if (code == EFX_EXCEPTION_UNKNOWN_SENSOREVT)
218 evq->exception = B_TRUE;
220 "hardware exception %s (code=%u, data=%#x) on EVQ %u;"
222 (code == EFX_EXCEPTION_RX_RECOVERY) ? "RX_RECOVERY" :
223 (code == EFX_EXCEPTION_RX_DSC_ERROR) ? "RX_DSC_ERROR" :
224 (code == EFX_EXCEPTION_TX_DSC_ERROR) ? "TX_DSC_ERROR" :
225 (code == EFX_EXCEPTION_FWALERT_SRAM) ? "FWALERT_SRAM" :
226 (code == EFX_EXCEPTION_UNKNOWN_FWALERT) ? "UNKNOWN_FWALERT" :
227 (code == EFX_EXCEPTION_RX_ERROR) ? "RX_ERROR" :
228 (code == EFX_EXCEPTION_TX_ERROR) ? "TX_ERROR" :
229 (code == EFX_EXCEPTION_EV_ERROR) ? "EV_ERROR" :
231 code, data, evq->evq_index);
237 sfc_ev_nop_rxq_flush_done(void *arg, uint32_t rxq_hw_index)
239 struct sfc_evq *evq = arg;
241 sfc_err(evq->sa, "EVQ %u unexpected RxQ %u flush done",
242 evq->evq_index, rxq_hw_index);
247 sfc_ev_rxq_flush_done(void *arg, __rte_unused uint32_t rxq_hw_index)
249 struct sfc_evq *evq = arg;
250 struct sfc_dp_rxq *dp_rxq;
253 dp_rxq = evq->dp_rxq;
254 SFC_ASSERT(dp_rxq != NULL);
256 rxq = sfc_rxq_by_dp_rxq(dp_rxq);
257 SFC_ASSERT(rxq != NULL);
258 SFC_ASSERT(rxq->hw_index == rxq_hw_index);
259 SFC_ASSERT(rxq->evq == evq);
260 sfc_rx_qflush_done(rxq);
266 sfc_ev_nop_rxq_flush_failed(void *arg, uint32_t rxq_hw_index)
268 struct sfc_evq *evq = arg;
270 sfc_err(evq->sa, "EVQ %u unexpected RxQ %u flush failed",
271 evq->evq_index, rxq_hw_index);
276 sfc_ev_rxq_flush_failed(void *arg, __rte_unused uint32_t rxq_hw_index)
278 struct sfc_evq *evq = arg;
279 struct sfc_dp_rxq *dp_rxq;
282 dp_rxq = evq->dp_rxq;
283 SFC_ASSERT(dp_rxq != NULL);
285 rxq = sfc_rxq_by_dp_rxq(dp_rxq);
286 SFC_ASSERT(rxq != NULL);
287 SFC_ASSERT(rxq->hw_index == rxq_hw_index);
288 SFC_ASSERT(rxq->evq == evq);
289 sfc_rx_qflush_failed(rxq);
295 sfc_ev_nop_txq_flush_done(void *arg, uint32_t txq_hw_index)
297 struct sfc_evq *evq = arg;
299 sfc_err(evq->sa, "EVQ %u unexpected TxQ %u flush done",
300 evq->evq_index, txq_hw_index);
305 sfc_ev_txq_flush_done(void *arg, __rte_unused uint32_t txq_hw_index)
307 struct sfc_evq *evq = arg;
311 SFC_ASSERT(txq != NULL);
312 SFC_ASSERT(txq->hw_index == txq_hw_index);
313 SFC_ASSERT(txq->evq == evq);
314 sfc_tx_qflush_done(txq);
320 sfc_ev_software(void *arg, uint16_t magic)
322 struct sfc_evq *evq = arg;
324 sfc_err(evq->sa, "EVQ %u unexpected software event magic=%#.4x",
325 evq->evq_index, magic);
330 sfc_ev_sram(void *arg, uint32_t code)
332 struct sfc_evq *evq = arg;
334 sfc_err(evq->sa, "EVQ %u unexpected SRAM event code=%u",
335 evq->evq_index, code);
340 sfc_ev_wake_up(void *arg, uint32_t index)
342 struct sfc_evq *evq = arg;
344 sfc_err(evq->sa, "EVQ %u unexpected wake up event index=%u",
345 evq->evq_index, index);
350 sfc_ev_timer(void *arg, uint32_t index)
352 struct sfc_evq *evq = arg;
354 sfc_err(evq->sa, "EVQ %u unexpected timer event index=%u",
355 evq->evq_index, index);
360 sfc_ev_nop_link_change(void *arg, __rte_unused efx_link_mode_t link_mode)
362 struct sfc_evq *evq = arg;
364 sfc_err(evq->sa, "EVQ %u unexpected link change event",
370 sfc_ev_link_change(void *arg, efx_link_mode_t link_mode)
372 struct sfc_evq *evq = arg;
373 struct sfc_adapter *sa = evq->sa;
374 struct rte_eth_link *dev_link = &sa->eth_dev->data->dev_link;
375 struct rte_eth_link new_link;
376 uint64_t new_link_u64;
377 uint64_t old_link_u64;
379 EFX_STATIC_ASSERT(sizeof(*dev_link) == sizeof(rte_atomic64_t));
381 sfc_port_link_mode_to_info(link_mode, &new_link);
383 new_link_u64 = *(uint64_t *)&new_link;
385 old_link_u64 = rte_atomic64_read((rte_atomic64_t *)dev_link);
386 if (old_link_u64 == new_link_u64)
389 if (rte_atomic64_cmpset((volatile uint64_t *)dev_link,
390 old_link_u64, new_link_u64)) {
391 evq->sa->port.lsc_seq++;
399 static const efx_ev_callbacks_t sfc_ev_callbacks = {
400 .eec_initialized = sfc_ev_initialized,
401 .eec_rx = sfc_ev_nop_rx,
402 .eec_tx = sfc_ev_nop_tx,
403 .eec_exception = sfc_ev_exception,
404 .eec_rxq_flush_done = sfc_ev_nop_rxq_flush_done,
405 .eec_rxq_flush_failed = sfc_ev_nop_rxq_flush_failed,
406 .eec_txq_flush_done = sfc_ev_nop_txq_flush_done,
407 .eec_software = sfc_ev_software,
408 .eec_sram = sfc_ev_sram,
409 .eec_wake_up = sfc_ev_wake_up,
410 .eec_timer = sfc_ev_timer,
411 .eec_link_change = sfc_ev_link_change,
414 static const efx_ev_callbacks_t sfc_ev_callbacks_efx_rx = {
415 .eec_initialized = sfc_ev_initialized,
416 .eec_rx = sfc_ev_efx_rx,
417 .eec_tx = sfc_ev_nop_tx,
418 .eec_exception = sfc_ev_exception,
419 .eec_rxq_flush_done = sfc_ev_rxq_flush_done,
420 .eec_rxq_flush_failed = sfc_ev_rxq_flush_failed,
421 .eec_txq_flush_done = sfc_ev_nop_txq_flush_done,
422 .eec_software = sfc_ev_software,
423 .eec_sram = sfc_ev_sram,
424 .eec_wake_up = sfc_ev_wake_up,
425 .eec_timer = sfc_ev_timer,
426 .eec_link_change = sfc_ev_nop_link_change,
429 static const efx_ev_callbacks_t sfc_ev_callbacks_dp_rx = {
430 .eec_initialized = sfc_ev_initialized,
431 .eec_rx = sfc_ev_dp_rx,
432 .eec_tx = sfc_ev_nop_tx,
433 .eec_exception = sfc_ev_exception,
434 .eec_rxq_flush_done = sfc_ev_rxq_flush_done,
435 .eec_rxq_flush_failed = sfc_ev_rxq_flush_failed,
436 .eec_txq_flush_done = sfc_ev_nop_txq_flush_done,
437 .eec_software = sfc_ev_software,
438 .eec_sram = sfc_ev_sram,
439 .eec_wake_up = sfc_ev_wake_up,
440 .eec_timer = sfc_ev_timer,
441 .eec_link_change = sfc_ev_nop_link_change,
444 static const efx_ev_callbacks_t sfc_ev_callbacks_tx = {
445 .eec_initialized = sfc_ev_initialized,
446 .eec_rx = sfc_ev_nop_rx,
448 .eec_exception = sfc_ev_exception,
449 .eec_rxq_flush_done = sfc_ev_nop_rxq_flush_done,
450 .eec_rxq_flush_failed = sfc_ev_nop_rxq_flush_failed,
451 .eec_txq_flush_done = sfc_ev_txq_flush_done,
452 .eec_software = sfc_ev_software,
453 .eec_sram = sfc_ev_sram,
454 .eec_wake_up = sfc_ev_wake_up,
455 .eec_timer = sfc_ev_timer,
456 .eec_link_change = sfc_ev_nop_link_change,
461 sfc_ev_qpoll(struct sfc_evq *evq)
463 SFC_ASSERT(evq->init_state == SFC_EVQ_STARTED ||
464 evq->init_state == SFC_EVQ_STARTING);
466 /* Synchronize the DMA memory for reading not required */
468 efx_ev_qpoll(evq->common, &evq->read_ptr, evq->callbacks, evq);
470 if (unlikely(evq->exception) && sfc_adapter_trylock(evq->sa)) {
471 struct sfc_adapter *sa = evq->sa;
474 if (evq->dp_rxq != NULL) {
475 unsigned int rxq_sw_index;
477 rxq_sw_index = evq->dp_rxq->dpq.queue_id;
480 "restart RxQ %u because of exception on its EvQ %u",
481 rxq_sw_index, evq->evq_index);
483 sfc_rx_qstop(sa, rxq_sw_index);
484 rc = sfc_rx_qstart(sa, rxq_sw_index);
486 sfc_err(sa, "cannot restart RxQ %u",
490 if (evq->txq != NULL) {
491 unsigned int txq_sw_index = sfc_txq_sw_index(evq->txq);
494 "restart TxQ %u because of exception on its EvQ %u",
495 txq_sw_index, evq->evq_index);
497 sfc_tx_qstop(sa, txq_sw_index);
498 rc = sfc_tx_qstart(sa, txq_sw_index);
500 sfc_err(sa, "cannot restart TxQ %u",
505 sfc_panic(sa, "unrecoverable exception on EvQ %u",
508 sfc_adapter_unlock(sa);
511 /* Poll-mode driver does not re-prime the event queue for interrupts */
515 sfc_ev_mgmt_qpoll(struct sfc_adapter *sa)
517 if (rte_spinlock_trylock(&sa->mgmt_evq_lock)) {
518 struct sfc_evq *mgmt_evq = sa->evq_info[sa->mgmt_evq_index].evq;
520 if (mgmt_evq->init_state == SFC_EVQ_STARTED)
521 sfc_ev_qpoll(mgmt_evq);
523 rte_spinlock_unlock(&sa->mgmt_evq_lock);
528 sfc_ev_qprime(struct sfc_evq *evq)
530 SFC_ASSERT(evq->init_state == SFC_EVQ_STARTED);
531 return efx_ev_qprime(evq->common, evq->read_ptr);
535 sfc_ev_qstart(struct sfc_adapter *sa, unsigned int sw_index)
537 const struct sfc_evq_info *evq_info;
540 unsigned int total_delay_us;
541 unsigned int delay_us;
544 sfc_log_init(sa, "sw_index=%u", sw_index);
546 evq_info = &sa->evq_info[sw_index];
550 /* Clear all events */
551 (void)memset((void *)esmp->esm_base, 0xff,
552 EFX_EVQ_SIZE(evq_info->entries));
554 /* Create the common code event queue */
555 rc = efx_ev_qcreate(sa->nic, sw_index, esmp, evq_info->entries,
556 0 /* unused on EF10 */, 0, evq_info->flags,
559 goto fail_ev_qcreate;
561 SFC_ASSERT(evq->dp_rxq == NULL || evq->txq == NULL);
562 if (evq->dp_rxq != 0) {
563 if (strcmp(sa->dp_rx->dp.name, SFC_KVARG_DATAPATH_EFX) == 0)
564 evq->callbacks = &sfc_ev_callbacks_efx_rx;
566 evq->callbacks = &sfc_ev_callbacks_dp_rx;
567 } else if (evq->txq != 0) {
568 evq->callbacks = &sfc_ev_callbacks_tx;
570 evq->callbacks = &sfc_ev_callbacks;
573 evq->init_state = SFC_EVQ_STARTING;
575 /* Wait for the initialization event */
577 delay_us = SFC_EVQ_INIT_BACKOFF_START_US;
579 (void)sfc_ev_qpoll(evq);
581 /* Check to see if the initialization complete indication
582 * posted by the hardware.
584 if (evq->init_state == SFC_EVQ_STARTED)
587 /* Give event queue some time to init */
588 rte_delay_us(delay_us);
590 total_delay_us += delay_us;
592 /* Exponential backoff */
594 if (delay_us > SFC_EVQ_INIT_BACKOFF_MAX_US)
595 delay_us = SFC_EVQ_INIT_BACKOFF_MAX_US;
597 } while (total_delay_us < SFC_EVQ_INIT_TIMEOUT_US);
606 evq->init_state = SFC_EVQ_INITIALIZED;
607 efx_ev_qdestroy(evq->common);
610 sfc_log_init(sa, "failed %d", rc);
615 sfc_ev_qstop(struct sfc_adapter *sa, unsigned int sw_index)
617 const struct sfc_evq_info *evq_info;
620 sfc_log_init(sa, "sw_index=%u", sw_index);
622 SFC_ASSERT(sw_index < sa->evq_count);
624 evq_info = &sa->evq_info[sw_index];
627 if (evq == NULL || evq->init_state != SFC_EVQ_STARTED)
630 evq->init_state = SFC_EVQ_INITIALIZED;
631 evq->callbacks = NULL;
633 evq->exception = B_FALSE;
635 efx_ev_qdestroy(evq->common);
639 sfc_ev_mgmt_periodic_qpoll(void *arg)
641 struct sfc_adapter *sa = arg;
644 sfc_ev_mgmt_qpoll(sa);
646 rc = rte_eal_alarm_set(SFC_MGMT_EV_QPOLL_PERIOD_US,
647 sfc_ev_mgmt_periodic_qpoll, sa);
648 if (rc == -ENOTSUP) {
649 sfc_warn(sa, "alarms are not supported");
650 sfc_warn(sa, "management EVQ must be polled indirectly using no-wait link status update");
651 } else if (rc != 0) {
653 "cannot rearm management EVQ polling alarm (rc=%d)",
659 sfc_ev_mgmt_periodic_qpoll_start(struct sfc_adapter *sa)
661 sfc_ev_mgmt_periodic_qpoll(sa);
665 sfc_ev_mgmt_periodic_qpoll_stop(struct sfc_adapter *sa)
667 rte_eal_alarm_cancel(sfc_ev_mgmt_periodic_qpoll, sa);
671 sfc_ev_start(struct sfc_adapter *sa)
675 sfc_log_init(sa, "entry");
677 rc = efx_ev_init(sa->nic);
681 /* Start management EVQ used for global events */
682 rte_spinlock_lock(&sa->mgmt_evq_lock);
684 rc = sfc_ev_qstart(sa, sa->mgmt_evq_index);
686 goto fail_mgmt_evq_start;
688 if (sa->intr.lsc_intr) {
689 rc = sfc_ev_qprime(sa->evq_info[sa->mgmt_evq_index].evq);
691 goto fail_evq0_prime;
694 rte_spinlock_unlock(&sa->mgmt_evq_lock);
697 * Start management EVQ polling. If interrupts are disabled
698 * (not used), it is required to process link status change
699 * and other device level events to avoid unrecoverable
700 * error because the event queue overflow.
702 sfc_ev_mgmt_periodic_qpoll_start(sa);
705 * Rx/Tx event queues are started/stopped when corresponding
706 * Rx/Tx queue is started/stopped.
715 rte_spinlock_unlock(&sa->mgmt_evq_lock);
716 efx_ev_fini(sa->nic);
719 sfc_log_init(sa, "failed %d", rc);
724 sfc_ev_stop(struct sfc_adapter *sa)
726 unsigned int sw_index;
728 sfc_log_init(sa, "entry");
730 sfc_ev_mgmt_periodic_qpoll_stop(sa);
732 /* Make sure that all event queues are stopped */
733 sw_index = sa->evq_count;
734 while (sw_index-- > 0) {
735 if (sw_index == sa->mgmt_evq_index) {
736 /* Locks are required for the management EVQ */
737 rte_spinlock_lock(&sa->mgmt_evq_lock);
738 sfc_ev_qstop(sa, sa->mgmt_evq_index);
739 rte_spinlock_unlock(&sa->mgmt_evq_lock);
741 sfc_ev_qstop(sa, sw_index);
745 efx_ev_fini(sa->nic);
749 sfc_ev_qinit(struct sfc_adapter *sa, unsigned int sw_index,
750 unsigned int entries, int socket_id)
752 struct sfc_evq_info *evq_info;
756 sfc_log_init(sa, "sw_index=%u", sw_index);
758 evq_info = &sa->evq_info[sw_index];
760 SFC_ASSERT(rte_is_power_of_2(entries));
761 SFC_ASSERT(entries <= evq_info->max_entries);
762 evq_info->entries = entries;
764 evq = rte_zmalloc_socket("sfc-evq", sizeof(*evq), RTE_CACHE_LINE_SIZE,
770 evq->evq_index = sw_index;
772 /* Allocate DMA space */
773 rc = sfc_dma_alloc(sa, "evq", sw_index, EFX_EVQ_SIZE(evq_info->entries),
774 socket_id, &evq->mem);
778 evq->init_state = SFC_EVQ_INITIALIZED;
786 sfc_ev_qfini(struct sfc_adapter *sa, unsigned int sw_index)
790 sfc_log_init(sa, "sw_index=%u", sw_index);
792 evq = sa->evq_info[sw_index].evq;
794 SFC_ASSERT(evq->init_state == SFC_EVQ_INITIALIZED);
796 sa->evq_info[sw_index].evq = NULL;
798 sfc_dma_free(sa, &evq->mem);
804 sfc_ev_qinit_info(struct sfc_adapter *sa, unsigned int sw_index)
806 struct sfc_evq_info *evq_info = &sa->evq_info[sw_index];
807 unsigned int max_entries;
809 sfc_log_init(sa, "sw_index=%u", sw_index);
811 max_entries = sfc_evq_max_entries(sa, sw_index);
812 SFC_ASSERT(rte_is_power_of_2(max_entries));
814 evq_info->max_entries = max_entries;
815 evq_info->flags = sa->evq_flags |
816 ((sa->intr.lsc_intr && sw_index == sa->mgmt_evq_index) ?
817 EFX_EVQ_FLAGS_NOTIFY_INTERRUPT :
818 EFX_EVQ_FLAGS_NOTIFY_DISABLED);
824 sfc_kvarg_perf_profile_handler(__rte_unused const char *key,
825 const char *value_str, void *opaque)
827 uint64_t *value = opaque;
829 if (strcasecmp(value_str, SFC_KVARG_PERF_PROFILE_THROUGHPUT) == 0)
830 *value = EFX_EVQ_FLAGS_TYPE_THROUGHPUT;
831 else if (strcasecmp(value_str, SFC_KVARG_PERF_PROFILE_LOW_LATENCY) == 0)
832 *value = EFX_EVQ_FLAGS_TYPE_LOW_LATENCY;
833 else if (strcasecmp(value_str, SFC_KVARG_PERF_PROFILE_AUTO) == 0)
834 *value = EFX_EVQ_FLAGS_TYPE_AUTO;
842 sfc_ev_qfini_info(struct sfc_adapter *sa, unsigned int sw_index)
844 sfc_log_init(sa, "sw_index=%u", sw_index);
846 /* Nothing to cleanup */
850 sfc_ev_init(struct sfc_adapter *sa)
853 unsigned int sw_index;
855 sfc_log_init(sa, "entry");
857 sa->evq_flags = EFX_EVQ_FLAGS_TYPE_THROUGHPUT;
858 rc = sfc_kvargs_process(sa, SFC_KVARG_PERF_PROFILE,
859 sfc_kvarg_perf_profile_handler,
862 sfc_err(sa, "invalid %s parameter value",
863 SFC_KVARG_PERF_PROFILE);
864 goto fail_kvarg_perf_profile;
867 sa->evq_count = sfc_ev_qcount(sa);
868 sa->mgmt_evq_index = 0;
869 rte_spinlock_init(&sa->mgmt_evq_lock);
871 /* Allocate EVQ info array */
873 sa->evq_info = rte_calloc_socket("sfc-evqs", sa->evq_count,
874 sizeof(struct sfc_evq_info), 0,
876 if (sa->evq_info == NULL)
877 goto fail_evqs_alloc;
879 for (sw_index = 0; sw_index < sa->evq_count; ++sw_index) {
880 rc = sfc_ev_qinit_info(sa, sw_index);
882 goto fail_ev_qinit_info;
885 rc = sfc_ev_qinit(sa, sa->mgmt_evq_index, SFC_MGMT_EVQ_ENTRIES,
888 goto fail_mgmt_evq_init;
891 * Rx/Tx event queues are created/destroyed when corresponding
892 * Rx/Tx queue is created/destroyed.
899 while (sw_index-- > 0)
900 sfc_ev_qfini_info(sa, sw_index);
902 rte_free(sa->evq_info);
908 fail_kvarg_perf_profile:
909 sfc_log_init(sa, "failed %d", rc);
914 sfc_ev_fini(struct sfc_adapter *sa)
918 sfc_log_init(sa, "entry");
920 /* Cleanup all event queues */
921 sw_index = sa->evq_count;
922 while (--sw_index >= 0) {
923 if (sa->evq_info[sw_index].evq != NULL)
924 sfc_ev_qfini(sa, sw_index);
925 sfc_ev_qfini_info(sa, sw_index);
928 rte_free(sa->evq_info);