static void
awg_start_locked(struct awg_softc *sc)
{
struct mbuf *m;
uint32_t val;
if_t ifp;
int cnt, nsegs;
AWG_ASSERT_LOCKED(sc);
if (!sc->link)
return;
ifp = sc->ifp;
if ((if_getdrvflags(ifp) & (IFF_DRV_RUNNING|IFF_DRV_OACTIVE)) !=
IFF_DRV_RUNNING)
return;
for (cnt = 0; ; cnt++) {
if (sc->tx.queued >= TX_DESC_COUNT - TX_MAX_SEGS) {
if_setdrvflagbits(ifp, IFF_DRV_OACTIVE, 0);
break;
}
m = if_dequeue(ifp);
if (m == NULL)
break;
nsegs = awg_setup_txbuf(sc, sc->tx.cur, &m);
if (nsegs == 0) {
if_sendq_prepend(ifp, m);
break;
}
if_bpfmtap(ifp, m);
sc->tx.cur = TX_SKIP(sc->tx.cur, nsegs);
}
if (cnt != 0) {
bus_dmamap_sync(sc->tx.desc_tag, sc->tx.desc_map,
BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
/* Start and run TX DMA */
val = RD4(sc, EMAC_TX_CTL_1);
WR4(sc, EMAC_TX_CTL_1, val | TX_DMA_START);
}
}
static void
nicvf_if_init_locked(struct nicvf *nic)
{
struct queue_set *qs = nic->qs;
struct ifnet *ifp;
int qidx;
int err;
caddr_t if_addr;
NICVF_CORE_LOCK_ASSERT(nic);
ifp = nic->ifp;
if ((if_getdrvflags(ifp) & IFF_DRV_RUNNING) != 0)
nicvf_stop_locked(nic);
err = nicvf_enable_misc_interrupt(nic);
if (err != 0) {
if_printf(ifp, "Could not reenable Mbox interrupt\n");
return;
}
/* Get the latest MAC address */
if_addr = if_getlladdr(ifp);
/* Update MAC address if changed */
if (memcmp(nic->hwaddr, if_addr, ETHER_ADDR_LEN) != 0) {
memcpy(nic->hwaddr, if_addr, ETHER_ADDR_LEN);
nicvf_hw_set_mac_addr(nic, if_addr);
}
/* Initialize the queues */
err = nicvf_init_resources(nic);
if (err != 0)
goto error;
/* Make sure queue initialization is written */
wmb();
nicvf_reg_write(nic, NIC_VF_INT, ~0UL);
/* Enable Qset err interrupt */
nicvf_enable_intr(nic, NICVF_INTR_QS_ERR, 0);
/* Enable completion queue interrupt */
for (qidx = 0; qidx < qs->cq_cnt; qidx++)
nicvf_enable_intr(nic, NICVF_INTR_CQ, qidx);
/* Enable RBDR threshold interrupt */
for (qidx = 0; qidx < qs->rbdr_cnt; qidx++)
nicvf_enable_intr(nic, NICVF_INTR_RBDR, qidx);
nic->drv_stats.txq_stop = 0;
nic->drv_stats.txq_wake = 0;
/* Activate network interface */
if_setdrvflagbits(ifp, IFF_DRV_RUNNING, IFF_DRV_OACTIVE);
/* Schedule callout to update stats */
callout_reset(&nic->stats_callout, hz, nicvf_tick_stats, nic);
return;
error:
/* Something went very wrong. Disable this ifnet for good */
if_setdrvflagbits(ifp, IFF_DRV_OACTIVE, IFF_DRV_RUNNING);
}
