static void
sfxge_ev_qstop(struct sfxge_softc *sc, unsigned int index)
{
struct sfxge_evq *evq;
evq = sc->evq[index];
KASSERT(evq->init_state == SFXGE_EVQ_STARTED,
("evq->init_state != SFXGE_EVQ_STARTED"));
SFXGE_EVQ_LOCK(evq);
evq->init_state = SFXGE_EVQ_INITIALIZED;
evq->read_ptr = 0;
evq->exception = B_FALSE;
#if EFSYS_OPT_QSTATS
/* Add event counts before discarding the common evq state */
efx_ev_qstats_update(evq->common, sc->ev_stats);
#endif
efx_ev_qdestroy(evq->common);
efx_sram_buf_tbl_clear(sc->enp, evq->buf_base_id,
EFX_EVQ_NBUFS(evq->entries));
SFXGE_EVQ_UNLOCK(evq);
}
static void
sfxge_ev_qstop(struct sfxge_softc *sc, unsigned int index)
{
struct sfxge_evq *evq;
evq = sc->evq[index];
KASSERT(evq->init_state == SFXGE_EVQ_STARTED,
("evq->init_state != SFXGE_EVQ_STARTED"));
mtx_lock(&evq->lock);
evq->init_state = SFXGE_EVQ_INITIALIZED;
evq->read_ptr = 0;
evq->exception = B_FALSE;
/* Add event counts before discarding the common evq state */
efx_ev_qstats_update(evq->common, sc->ev_stats);
efx_ev_qdestroy(evq->common);
efx_sram_buf_tbl_clear(sc->enp, evq->buf_base_id,
EFX_EVQ_NBUFS(SFXGE_NEVS));
mtx_unlock(&evq->lock);
}
static int
sfxge_ev_qstart(struct sfxge_softc *sc, unsigned int index)
{
struct sfxge_evq *evq;
efsys_mem_t *esmp;
int count;
int rc;
evq = sc->evq[index];
esmp = &evq->mem;
KASSERT(evq->init_state == SFXGE_EVQ_INITIALIZED,
("evq->init_state != SFXGE_EVQ_INITIALIZED"));
/* Clear all events. */
(void)memset(esmp->esm_base, 0xff, EFX_EVQ_SIZE(SFXGE_NEVS));
/* Program the buffer table. */
if ((rc = efx_sram_buf_tbl_set(sc->enp, evq->buf_base_id, esmp,
EFX_EVQ_NBUFS(SFXGE_NEVS))) != 0)
return rc;
/* Create the common code event queue. */
if ((rc = efx_ev_qcreate(sc->enp, index, esmp, SFXGE_NEVS,
evq->buf_base_id, &evq->common)) != 0)
goto fail;
mtx_lock(&evq->lock);
/* Set the default moderation */
(void)efx_ev_qmoderate(evq->common, sc->ev_moderation);
/* Prime the event queue for interrupts */
if ((rc = efx_ev_qprime(evq->common, evq->read_ptr)) != 0)
goto fail2;
evq->init_state = SFXGE_EVQ_STARTING;
mtx_unlock(&evq->lock);
/* Wait for the initialization event */
count = 0;
do {
/* Pause for 100 ms */
pause("sfxge evq init", hz / 10);
/* Check to see if the test event has been processed */
if (evq->init_state == SFXGE_EVQ_STARTED)
goto done;
} while (++count < 20);
rc = ETIMEDOUT;
goto fail3;
done:
return (0);
fail3:
mtx_lock(&evq->lock);
evq->init_state = SFXGE_EVQ_INITIALIZED;
fail2:
mtx_unlock(&evq->lock);
efx_ev_qdestroy(evq->common);
fail:
efx_sram_buf_tbl_clear(sc->enp, evq->buf_base_id,
EFX_EVQ_NBUFS(SFXGE_NEVS));
return (rc);
}
