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); }