int
sfxge_ev_start(struct sfxge_softc *sc)
{
struct sfxge_intr *intr;
int index;
int rc;
intr = &sc->intr;
KASSERT(intr->state == SFXGE_INTR_STARTED,
("intr->state != SFXGE_INTR_STARTED"));
/* Initialize the event module */
if ((rc = efx_ev_init(sc->enp)) != 0)
return rc;
/* Start the event queues */
for (index = 0; index < intr->n_alloc; index++) {
if ((rc = sfxge_ev_qstart(sc, index)) != 0)
goto fail;
}
return (0);
fail:
/* Stop the event queue(s) */
while (--index >= 0)
sfxge_ev_qstop(sc, index);
/* Tear down the event module */
efx_ev_fini(sc->enp);
return (rc);
}
int
sfc_ev_start(struct sfc_adapter *sa)
{
int rc;
sfc_log_init(sa, "entry");
rc = efx_ev_init(sa->nic);
if (rc != 0)
goto fail_ev_init;
/* Start management EVQ used for global events */
/*
* Management event queue start polls the queue, but it cannot
* interfere with other polling contexts since mgmt_evq_running
* is false yet.
*/
rc = sfc_ev_qstart(sa->mgmt_evq, sa->mgmt_evq_index);
if (rc != 0)
goto fail_mgmt_evq_start;
rte_spinlock_lock(&sa->mgmt_evq_lock);
sa->mgmt_evq_running = true;
rte_spinlock_unlock(&sa->mgmt_evq_lock);
if (sa->intr.lsc_intr) {
rc = sfc_ev_qprime(sa->mgmt_evq);
if (rc != 0)
goto fail_mgmt_evq_prime;
}
/*
* Start management EVQ polling. If interrupts are disabled
* (not used), it is required to process link status change
* and other device level events to avoid unrecoverable
* error because the event queue overflow.
*/
sfc_ev_mgmt_periodic_qpoll_start(sa);
/*
* Rx/Tx event queues are started/stopped when corresponding
* Rx/Tx queue is started/stopped.
*/
return 0;
fail_mgmt_evq_prime:
sfc_ev_qstop(sa->mgmt_evq);
fail_mgmt_evq_start:
efx_ev_fini(sa->nic);
fail_ev_init:
sfc_log_init(sa, "failed %d", rc);
return rc;
}
void
sfc_ev_stop(struct sfc_adapter *sa)
{
sfc_log_init(sa, "entry");
sfc_ev_mgmt_periodic_qpoll_stop(sa);
rte_spinlock_lock(&sa->mgmt_evq_lock);
sa->mgmt_evq_running = false;
rte_spinlock_unlock(&sa->mgmt_evq_lock);
sfc_ev_qstop(sa->mgmt_evq);
efx_ev_fini(sa->nic);
}
void
sfxge_ev_stop(struct sfxge_softc *sc)
{
struct sfxge_intr *intr;
efx_nic_t *enp;
int index;
intr = &sc->intr;
enp = sc->enp;
KASSERT(intr->state == SFXGE_INTR_STARTED,
("Interrupts not started"));
/* Stop the event queue(s) */
index = intr->n_alloc;
while (--index >= 0)
sfxge_ev_qstop(sc, index);
/* Tear down the event module */
efx_ev_fini(enp);
}
