D12539.1790967545.diff
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D12539.1790967545.diff
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	Index: sys/arm/allwinner/if_awg.c
	===================================================================
	--- sys/arm/allwinner/if_awg.c
	+++ sys/arm/allwinner/if_awg.c
	@@ -807,6 +807,7 @@
	{
	if_t ifp;
	uint32_t val;
	+ int i;

	AWG_ASSERT_LOCKED(sc);

	@@ -840,6 +841,39 @@
	WR4(sc, EMAC_RX_CTL_1, val & ~RX_DMA_EN);

	sc->link = 0;
	+
	+ /* Finish handling transmitted buffers */
	+ awg_txeof(sc);
	+
	+ /* Release any untransmitted buffers. */
	+ for (i = sc->tx.next; sc->tx.queued > 0; i = TX_NEXT(i)) {
	+ val = le32toh(sc->tx.desc_ring[i].status);
	+ if ((val & TX_DESC_CTL) != 0)
	+ break;
	+ awg_clean_txbuf(sc, i);
	+ }
	+ sc->tx.next = i;
	+ for (; sc->tx.queued > 0; i = TX_NEXT(i)) {
	+ sc->tx.desc_ring[i].status = 0;
	+ awg_clean_txbuf(sc, i);
	+ }
	+ sc->tx.cur = sc->tx.next;
	+ bus_dmamap_sync(sc->tx.desc_tag, sc->tx.desc_map,
	+ BUS_DMASYNC_PREREAD \| BUS_DMASYNC_PREWRITE);
	+
	+ /* Setup RX buffers for reuse */
	+ bus_dmamap_sync(sc->rx.desc_tag, sc->rx.desc_map,
	+ BUS_DMASYNC_POSTREAD \| BUS_DMASYNC_POSTWRITE);
	+
	+ for (i = sc->rx.cur; ; i = RX_NEXT(i)) {
	+ val = le32toh(sc->rx.desc_ring[i].status);
	+ if ((val & RX_DESC_CTL) != 0)
	+ break;
	+ awg_reuse_rxdesc(sc, i);
	+ }
	+ sc->rx.cur = i;
	+ bus_dmamap_sync(sc->rx.desc_tag, sc->rx.desc_map,
	+ BUS_DMASYNC_PREREAD \| BUS_DMASYNC_PREWRITE);

	if_setdrvflagbits(ifp, 0, IFF_DRV_RUNNING \| IFF_DRV_OACTIVE);
	}