2 * Copyright (c) 2010-2015 Solarflare Communications Inc.
5 * This software was developed in part by Philip Paeps under contract for
6 * Solarflare Communications, Inc.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
11 * 1. Redistributions of source code must retain the above copyright notice,
12 * this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright notice,
14 * this list of conditions and the following disclaimer in the documentation
15 * and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
19 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
21 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
22 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
23 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
24 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
26 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
27 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 * The views and conclusions contained in the software and documentation are
30 * those of the authors and should not be interpreted as representing official
31 * policies, either expressed or implied, of the FreeBSD Project.
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD$");
37 #include <sys/param.h>
38 #include <sys/systm.h>
40 #include "common/efx.h"
45 sfxge_ev_qcomplete(struct sfxge_evq *evq, boolean_t eop)
47 struct sfxge_softc *sc;
49 struct sfxge_rxq *rxq;
50 struct sfxge_txq *txq;
52 SFXGE_EVQ_LOCK_ASSERT_OWNED(evq);
58 if ((txq = evq->txq) != NULL) {
60 evq->txqs = &(evq->txq);
63 struct sfxge_txq *next;
68 KASSERT(txq->evq_index == index,
69 ("txq->evq_index != index"));
71 if (txq->pending != txq->completed)
72 sfxge_tx_qcomplete(txq, evq);
75 } while (txq != NULL);
78 if (rxq->pending != rxq->completed)
79 sfxge_rx_qcomplete(rxq, eop);
83 sfxge_ev_rx(void *arg, uint32_t label, uint32_t id, uint32_t size,
86 struct sfxge_evq *evq;
87 struct sfxge_softc *sc;
88 struct sfxge_rxq *rxq;
91 struct sfxge_rx_sw_desc *rx_desc;
94 SFXGE_EVQ_LOCK_ASSERT_OWNED(evq);
101 rxq = sc->rxq[label];
102 KASSERT(rxq != NULL, ("rxq == NULL"));
103 KASSERT(evq->index == rxq->index,
104 ("evq->index != rxq->index"));
106 if (__predict_false(rxq->init_state != SFXGE_RXQ_STARTED))
109 stop = (id + 1) & rxq->ptr_mask;
110 id = rxq->pending & rxq->ptr_mask;
111 delta = (stop >= id) ? (stop - id) : (rxq->entries - id + stop);
112 rxq->pending += delta;
115 if ((!efx_nic_cfg_get(sc->enp)->enc_rx_batching_enabled) ||
117 (delta > efx_nic_cfg_get(sc->enp)->enc_rx_batch_max)) {
118 evq->exception = B_TRUE;
120 device_printf(sc->dev, "RX completion out of order"
121 " (id=%#x delta=%u flags=%#x); resetting\n",
123 sfxge_schedule_reset(sc);
129 rx_desc = &rxq->queue[id];
131 prefetch_read_many(rx_desc->mbuf);
133 for (; id != stop; id = (id + 1) & rxq->ptr_mask) {
134 rx_desc = &rxq->queue[id];
135 KASSERT(rx_desc->flags == EFX_DISCARD,
136 ("rx_desc->flags != EFX_DISCARD"));
137 rx_desc->flags = flags;
139 KASSERT(size < (1 << 16), ("size > (1 << 16)"));
140 rx_desc->size = (uint16_t)size;
145 if (rxq->pending - rxq->completed >= SFXGE_RX_BATCH)
146 sfxge_ev_qcomplete(evq, B_FALSE);
149 return (evq->rx_done >= SFXGE_EV_BATCH);
153 sfxge_ev_exception(void *arg, uint32_t code, uint32_t data)
155 struct sfxge_evq *evq;
156 struct sfxge_softc *sc;
158 evq = (struct sfxge_evq *)arg;
159 SFXGE_EVQ_LOCK_ASSERT_OWNED(evq);
163 DBGPRINT(sc->dev, "[%d] %s", evq->index,
164 (code == EFX_EXCEPTION_RX_RECOVERY) ? "RX_RECOVERY" :
165 (code == EFX_EXCEPTION_RX_DSC_ERROR) ? "RX_DSC_ERROR" :
166 (code == EFX_EXCEPTION_TX_DSC_ERROR) ? "TX_DSC_ERROR" :
167 (code == EFX_EXCEPTION_UNKNOWN_SENSOREVT) ? "UNKNOWN_SENSOREVT" :
168 (code == EFX_EXCEPTION_FWALERT_SRAM) ? "FWALERT_SRAM" :
169 (code == EFX_EXCEPTION_UNKNOWN_FWALERT) ? "UNKNOWN_FWALERT" :
170 (code == EFX_EXCEPTION_RX_ERROR) ? "RX_ERROR" :
171 (code == EFX_EXCEPTION_TX_ERROR) ? "TX_ERROR" :
172 (code == EFX_EXCEPTION_EV_ERROR) ? "EV_ERROR" :
175 evq->exception = B_TRUE;
177 if (code != EFX_EXCEPTION_UNKNOWN_SENSOREVT) {
178 device_printf(sc->dev,
179 "hardware exception (code=%u); resetting\n",
181 sfxge_schedule_reset(sc);
188 sfxge_ev_rxq_flush_done(void *arg, uint32_t rxq_index)
190 struct sfxge_evq *evq;
191 struct sfxge_softc *sc;
192 struct sfxge_rxq *rxq;
197 evq = (struct sfxge_evq *)arg;
198 SFXGE_EVQ_LOCK_ASSERT_OWNED(evq);
201 rxq = sc->rxq[rxq_index];
203 KASSERT(rxq != NULL, ("rxq == NULL"));
205 /* Resend a software event on the correct queue */
207 if (index == evq->index) {
208 sfxge_rx_qflush_done(rxq);
212 evq = sc->evq[index];
215 KASSERT((label & SFXGE_MAGIC_DMAQ_LABEL_MASK) == label,
216 ("(label & SFXGE_MAGIC_DMAQ_LABEL_MASK) != level"));
217 magic = SFXGE_MAGIC_RX_QFLUSH_DONE | label;
219 KASSERT(evq->init_state == SFXGE_EVQ_STARTED,
220 ("evq not started"));
221 efx_ev_qpost(evq->common, magic);
227 sfxge_ev_rxq_flush_failed(void *arg, uint32_t rxq_index)
229 struct sfxge_evq *evq;
230 struct sfxge_softc *sc;
231 struct sfxge_rxq *rxq;
236 evq = (struct sfxge_evq *)arg;
237 SFXGE_EVQ_LOCK_ASSERT_OWNED(evq);
240 rxq = sc->rxq[rxq_index];
242 KASSERT(rxq != NULL, ("rxq == NULL"));
244 /* Resend a software event on the correct queue */
246 evq = sc->evq[index];
249 KASSERT((label & SFXGE_MAGIC_DMAQ_LABEL_MASK) == label,
250 ("(label & SFXGE_MAGIC_DMAQ_LABEL_MASK) != label"));
251 magic = SFXGE_MAGIC_RX_QFLUSH_FAILED | label;
253 KASSERT(evq->init_state == SFXGE_EVQ_STARTED,
254 ("evq not started"));
255 efx_ev_qpost(evq->common, magic);
260 static struct sfxge_txq *
261 sfxge_get_txq_by_label(struct sfxge_evq *evq, enum sfxge_txq_type label)
265 KASSERT((evq->index == 0 && label < SFXGE_TXQ_NTYPES) ||
266 (label == SFXGE_TXQ_IP_TCP_UDP_CKSUM), ("unexpected txq label"));
267 index = (evq->index == 0) ? label : (evq->index - 1 + SFXGE_TXQ_NTYPES);
268 return (evq->sc->txq[index]);
272 sfxge_ev_tx(void *arg, uint32_t label, uint32_t id)
274 struct sfxge_evq *evq;
275 struct sfxge_txq *txq;
279 evq = (struct sfxge_evq *)arg;
280 SFXGE_EVQ_LOCK_ASSERT_OWNED(evq);
282 txq = sfxge_get_txq_by_label(evq, label);
284 KASSERT(txq != NULL, ("txq == NULL"));
285 KASSERT(evq->index == txq->evq_index,
286 ("evq->index != txq->evq_index"));
288 if (__predict_false(txq->init_state != SFXGE_TXQ_STARTED))
291 stop = (id + 1) & txq->ptr_mask;
292 id = txq->pending & txq->ptr_mask;
294 delta = (stop >= id) ? (stop - id) : (txq->entries - id + stop);
295 txq->pending += delta;
299 if (txq->next == NULL &&
300 evq->txqs != &(txq->next)) {
302 evq->txqs = &(txq->next);
305 if (txq->pending - txq->completed >= SFXGE_TX_BATCH)
306 sfxge_tx_qcomplete(txq, evq);
309 return (evq->tx_done >= SFXGE_EV_BATCH);
313 sfxge_ev_txq_flush_done(void *arg, uint32_t txq_index)
315 struct sfxge_evq *evq;
316 struct sfxge_softc *sc;
317 struct sfxge_txq *txq;
321 evq = (struct sfxge_evq *)arg;
322 SFXGE_EVQ_LOCK_ASSERT_OWNED(evq);
325 txq = sc->txq[txq_index];
327 KASSERT(txq != NULL, ("txq == NULL"));
328 KASSERT(txq->init_state == SFXGE_TXQ_INITIALIZED,
329 ("txq not initialized"));
331 if (txq->evq_index == evq->index) {
332 sfxge_tx_qflush_done(txq);
336 /* Resend a software event on the correct queue */
337 evq = sc->evq[txq->evq_index];
340 KASSERT((label & SFXGE_MAGIC_DMAQ_LABEL_MASK) == label,
341 ("(label & SFXGE_MAGIC_DMAQ_LABEL_MASK) != label"));
342 magic = SFXGE_MAGIC_TX_QFLUSH_DONE | label;
344 KASSERT(evq->init_state == SFXGE_EVQ_STARTED,
345 ("evq not started"));
346 efx_ev_qpost(evq->common, magic);
352 sfxge_ev_software(void *arg, uint16_t magic)
354 struct sfxge_evq *evq;
355 struct sfxge_softc *sc;
358 evq = (struct sfxge_evq *)arg;
359 SFXGE_EVQ_LOCK_ASSERT_OWNED(evq);
363 label = magic & SFXGE_MAGIC_DMAQ_LABEL_MASK;
364 magic &= ~SFXGE_MAGIC_DMAQ_LABEL_MASK;
367 case SFXGE_MAGIC_RX_QFLUSH_DONE: {
368 struct sfxge_rxq *rxq = sc->rxq[label];
370 KASSERT(rxq != NULL, ("rxq == NULL"));
371 KASSERT(evq->index == rxq->index,
372 ("evq->index != rxq->index"));
374 sfxge_rx_qflush_done(rxq);
377 case SFXGE_MAGIC_RX_QFLUSH_FAILED: {
378 struct sfxge_rxq *rxq = sc->rxq[label];
380 KASSERT(rxq != NULL, ("rxq == NULL"));
381 KASSERT(evq->index == rxq->index,
382 ("evq->index != rxq->index"));
384 sfxge_rx_qflush_failed(rxq);
387 case SFXGE_MAGIC_RX_QREFILL: {
388 struct sfxge_rxq *rxq = sc->rxq[label];
390 KASSERT(rxq != NULL, ("rxq == NULL"));
391 KASSERT(evq->index == rxq->index,
392 ("evq->index != rxq->index"));
394 sfxge_rx_qrefill(rxq);
397 case SFXGE_MAGIC_TX_QFLUSH_DONE: {
398 struct sfxge_txq *txq = sfxge_get_txq_by_label(evq, label);
400 KASSERT(txq != NULL, ("txq == NULL"));
401 KASSERT(evq->index == txq->evq_index,
402 ("evq->index != txq->evq_index"));
404 sfxge_tx_qflush_done(txq);
415 sfxge_ev_sram(void *arg, uint32_t code)
421 case EFX_SRAM_UPDATE:
422 EFSYS_PROBE(sram_update);
426 EFSYS_PROBE(sram_clear);
429 case EFX_SRAM_ILLEGAL_CLEAR:
430 EFSYS_PROBE(sram_illegal_clear);
434 KASSERT(B_FALSE, ("Impossible SRAM event"));
442 sfxge_ev_timer(void *arg, uint32_t index)
451 sfxge_ev_wake_up(void *arg, uint32_t index)
462 sfxge_ev_stat_update(struct sfxge_softc *sc)
464 struct sfxge_evq *evq;
468 SFXGE_ADAPTER_LOCK(sc);
470 if (__predict_false(sc->evq[0]->init_state != SFXGE_EVQ_STARTED))
474 if (now - sc->ev_stats_update_time < hz)
477 sc->ev_stats_update_time = now;
479 /* Add event counts from each event queue in turn */
480 for (index = 0; index < sc->evq_count; index++) {
481 evq = sc->evq[index];
483 efx_ev_qstats_update(evq->common, sc->ev_stats);
484 SFXGE_EVQ_UNLOCK(evq);
487 SFXGE_ADAPTER_UNLOCK(sc);
491 sfxge_ev_stat_handler(SYSCTL_HANDLER_ARGS)
493 struct sfxge_softc *sc = arg1;
494 unsigned int id = arg2;
496 sfxge_ev_stat_update(sc);
498 return (SYSCTL_OUT(req, &sc->ev_stats[id], sizeof(sc->ev_stats[id])));
502 sfxge_ev_stat_init(struct sfxge_softc *sc)
504 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev);
505 struct sysctl_oid_list *stat_list;
509 stat_list = SYSCTL_CHILDREN(sc->stats_node);
511 for (id = 0; id < EV_NQSTATS; id++) {
512 snprintf(name, sizeof(name), "ev_%s",
513 efx_ev_qstat_name(sc->enp, id));
516 OID_AUTO, name, CTLTYPE_U64|CTLFLAG_RD,
517 sc, id, sfxge_ev_stat_handler, "Q",
522 #endif /* EFSYS_OPT_QSTATS */
525 sfxge_ev_qmoderate(struct sfxge_softc *sc, unsigned int idx, unsigned int us)
527 struct sfxge_evq *evq;
533 KASSERT(evq->init_state == SFXGE_EVQ_STARTED,
534 ("evq->init_state != SFXGE_EVQ_STARTED"));
536 (void)efx_ev_qmoderate(eep, us);
540 sfxge_int_mod_handler(SYSCTL_HANDLER_ARGS)
542 struct sfxge_softc *sc = arg1;
543 struct sfxge_intr *intr = &sc->intr;
544 unsigned int moderation;
548 SFXGE_ADAPTER_LOCK(sc);
550 if (req->newptr != NULL) {
551 if ((error = SYSCTL_IN(req, &moderation, sizeof(moderation)))
555 /* We may not be calling efx_ev_qmoderate() now,
556 * so we have to range-check the value ourselves.
559 efx_nic_cfg_get(sc->enp)->enc_evq_timer_max_us) {
564 sc->ev_moderation = moderation;
565 if (intr->state == SFXGE_INTR_STARTED) {
566 for (index = 0; index < sc->evq_count; index++)
567 sfxge_ev_qmoderate(sc, index, moderation);
570 error = SYSCTL_OUT(req, &sc->ev_moderation,
571 sizeof(sc->ev_moderation));
575 SFXGE_ADAPTER_UNLOCK(sc);
581 sfxge_ev_initialized(void *arg)
583 struct sfxge_evq *evq;
585 evq = (struct sfxge_evq *)arg;
586 SFXGE_EVQ_LOCK_ASSERT_OWNED(evq);
588 /* Init done events may be duplicated on 7xxx */
589 KASSERT(evq->init_state == SFXGE_EVQ_STARTING ||
590 evq->init_state == SFXGE_EVQ_STARTED,
591 ("evq not starting"));
593 evq->init_state = SFXGE_EVQ_STARTED;
599 sfxge_ev_link_change(void *arg, efx_link_mode_t link_mode)
601 struct sfxge_evq *evq;
602 struct sfxge_softc *sc;
604 evq = (struct sfxge_evq *)arg;
605 SFXGE_EVQ_LOCK_ASSERT_OWNED(evq);
609 sfxge_mac_link_update(sc, link_mode);
614 static const efx_ev_callbacks_t sfxge_ev_callbacks = {
615 .eec_initialized = sfxge_ev_initialized,
616 .eec_rx = sfxge_ev_rx,
617 .eec_tx = sfxge_ev_tx,
618 .eec_exception = sfxge_ev_exception,
619 .eec_rxq_flush_done = sfxge_ev_rxq_flush_done,
620 .eec_rxq_flush_failed = sfxge_ev_rxq_flush_failed,
621 .eec_txq_flush_done = sfxge_ev_txq_flush_done,
622 .eec_software = sfxge_ev_software,
623 .eec_sram = sfxge_ev_sram,
624 .eec_wake_up = sfxge_ev_wake_up,
625 .eec_timer = sfxge_ev_timer,
626 .eec_link_change = sfxge_ev_link_change,
631 sfxge_ev_qpoll(struct sfxge_evq *evq)
637 if (__predict_false(evq->init_state != SFXGE_EVQ_STARTING &&
638 evq->init_state != SFXGE_EVQ_STARTED)) {
643 /* Synchronize the DMA memory for reading */
644 bus_dmamap_sync(evq->mem.esm_tag, evq->mem.esm_map,
645 BUS_DMASYNC_POSTREAD);
647 KASSERT(evq->rx_done == 0, ("evq->rx_done != 0"));
648 KASSERT(evq->tx_done == 0, ("evq->tx_done != 0"));
649 KASSERT(evq->txq == NULL, ("evq->txq != NULL"));
650 KASSERT(evq->txqs == &evq->txq, ("evq->txqs != &evq->txq"));
653 efx_ev_qpoll(evq->common, &evq->read_ptr, &sfxge_ev_callbacks, evq);
658 /* Perform any pending completion processing */
659 sfxge_ev_qcomplete(evq, B_TRUE);
661 /* Re-prime the event queue for interrupts */
662 if ((rc = efx_ev_qprime(evq->common, evq->read_ptr)) != 0)
665 SFXGE_EVQ_UNLOCK(evq);
670 SFXGE_EVQ_UNLOCK(evq);
675 sfxge_ev_qstop(struct sfxge_softc *sc, unsigned int index)
677 struct sfxge_evq *evq;
679 evq = sc->evq[index];
681 KASSERT(evq->init_state == SFXGE_EVQ_STARTED,
682 ("evq->init_state != SFXGE_EVQ_STARTED"));
685 evq->init_state = SFXGE_EVQ_INITIALIZED;
687 evq->exception = B_FALSE;
690 /* Add event counts before discarding the common evq state */
691 efx_ev_qstats_update(evq->common, sc->ev_stats);
694 efx_ev_qdestroy(evq->common);
695 efx_sram_buf_tbl_clear(sc->enp, evq->buf_base_id,
696 EFX_EVQ_NBUFS(evq->entries));
697 SFXGE_EVQ_UNLOCK(evq);
701 sfxge_ev_qstart(struct sfxge_softc *sc, unsigned int index)
703 struct sfxge_evq *evq;
708 evq = sc->evq[index];
711 KASSERT(evq->init_state == SFXGE_EVQ_INITIALIZED,
712 ("evq->init_state != SFXGE_EVQ_INITIALIZED"));
714 /* Clear all events. */
715 (void)memset(esmp->esm_base, 0xff, EFX_EVQ_SIZE(evq->entries));
717 /* Program the buffer table. */
718 if ((rc = efx_sram_buf_tbl_set(sc->enp, evq->buf_base_id, esmp,
719 EFX_EVQ_NBUFS(evq->entries))) != 0)
722 /* Create the common code event queue. */
723 if ((rc = efx_ev_qcreate(sc->enp, index, esmp, evq->entries,
724 evq->buf_base_id, &evq->common)) != 0)
729 /* Set the default moderation */
730 (void)efx_ev_qmoderate(evq->common, sc->ev_moderation);
732 /* Prime the event queue for interrupts */
733 if ((rc = efx_ev_qprime(evq->common, evq->read_ptr)) != 0)
736 evq->init_state = SFXGE_EVQ_STARTING;
738 SFXGE_EVQ_UNLOCK(evq);
740 /* Wait for the initialization event */
743 /* Pause for 100 ms */
744 pause("sfxge evq init", hz / 10);
746 /* Check to see if the test event has been processed */
747 if (evq->init_state == SFXGE_EVQ_STARTED)
750 } while (++count < 20);
760 evq->init_state = SFXGE_EVQ_INITIALIZED;
762 SFXGE_EVQ_UNLOCK(evq);
763 efx_ev_qdestroy(evq->common);
765 efx_sram_buf_tbl_clear(sc->enp, evq->buf_base_id,
766 EFX_EVQ_NBUFS(evq->entries));
772 sfxge_ev_stop(struct sfxge_softc *sc)
774 struct sfxge_intr *intr;
781 KASSERT(intr->state == SFXGE_INTR_STARTED,
782 ("Interrupts not started"));
784 /* Stop the event queue(s) */
785 index = sc->evq_count;
787 sfxge_ev_qstop(sc, index);
789 /* Tear down the event module */
794 sfxge_ev_start(struct sfxge_softc *sc)
796 struct sfxge_intr *intr;
802 KASSERT(intr->state == SFXGE_INTR_STARTED,
803 ("intr->state != SFXGE_INTR_STARTED"));
805 /* Initialize the event module */
806 if ((rc = efx_ev_init(sc->enp)) != 0)
809 /* Start the event queues */
810 for (index = 0; index < sc->evq_count; index++) {
811 if ((rc = sfxge_ev_qstart(sc, index)) != 0)
818 /* Stop the event queue(s) */
820 sfxge_ev_qstop(sc, index);
822 /* Tear down the event module */
823 efx_ev_fini(sc->enp);
829 sfxge_ev_qfini(struct sfxge_softc *sc, unsigned int index)
831 struct sfxge_evq *evq;
833 evq = sc->evq[index];
835 KASSERT(evq->init_state == SFXGE_EVQ_INITIALIZED,
836 ("evq->init_state != SFXGE_EVQ_INITIALIZED"));
837 KASSERT(evq->txqs == &evq->txq, ("evq->txqs != &evq->txq"));
839 sfxge_dma_free(&evq->mem);
841 sc->evq[index] = NULL;
843 SFXGE_EVQ_LOCK_DESTROY(evq);
849 sfxge_ev_qinit(struct sfxge_softc *sc, unsigned int index)
851 struct sfxge_evq *evq;
855 KASSERT(index < SFXGE_RX_SCALE_MAX, ("index >= SFXGE_RX_SCALE_MAX"));
857 evq = malloc(sizeof(struct sfxge_evq), M_SFXGE, M_ZERO | M_WAITOK);
860 sc->evq[index] = evq;
863 /* Build an event queue with room for one event per tx and rx buffer,
864 * plus some extra for link state events and MCDI completions.
865 * There are three tx queues in the first event queue and one in
870 ROUNDUP_POW_OF_TWO(sc->rxq_entries +
871 3 * sc->txq_entries +
875 ROUNDUP_POW_OF_TWO(sc->rxq_entries +
879 /* Initialise TX completion list */
880 evq->txqs = &evq->txq;
882 /* Allocate DMA space. */
883 if ((rc = sfxge_dma_alloc(sc, EFX_EVQ_SIZE(evq->entries), esmp)) != 0)
886 /* Allocate buffer table entries. */
887 sfxge_sram_buf_tbl_alloc(sc, EFX_EVQ_NBUFS(evq->entries),
890 SFXGE_EVQ_LOCK_INIT(evq, device_get_nameunit(sc->dev), index);
892 evq->init_state = SFXGE_EVQ_INITIALIZED;
898 sfxge_ev_fini(struct sfxge_softc *sc)
900 struct sfxge_intr *intr;
905 KASSERT(intr->state == SFXGE_INTR_INITIALIZED,
906 ("intr->state != SFXGE_INTR_INITIALIZED"));
908 sc->ev_moderation = 0;
910 /* Tear down the event queue(s). */
911 index = sc->evq_count;
913 sfxge_ev_qfini(sc, index);
919 sfxge_ev_init(struct sfxge_softc *sc)
921 struct sysctl_ctx_list *sysctl_ctx = device_get_sysctl_ctx(sc->dev);
922 struct sysctl_oid *sysctl_tree = device_get_sysctl_tree(sc->dev);
923 struct sfxge_intr *intr;
929 sc->evq_count = intr->n_alloc;
931 KASSERT(intr->state == SFXGE_INTR_INITIALIZED,
932 ("intr->state != SFXGE_INTR_INITIALIZED"));
934 /* Set default interrupt moderation; add a sysctl to
935 * read and change it.
937 sc->ev_moderation = SFXGE_MODERATION;
938 SYSCTL_ADD_PROC(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree),
939 OID_AUTO, "int_mod", CTLTYPE_UINT|CTLFLAG_RW,
940 sc, 0, sfxge_int_mod_handler, "IU",
941 "sfxge interrupt moderation (us)");
944 * Initialize the event queue(s) - one per interrupt.
946 for (index = 0; index < sc->evq_count; index++) {
947 if ((rc = sfxge_ev_qinit(sc, index)) != 0)
952 sfxge_ev_stat_init(sc);
959 sfxge_ev_qfini(sc, index);