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ffec: Add wmb() to descriptor updates

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This commit is contained in:
Sebastian Huber
2017-09-27 09:37:38 +02:00
parent 7f7a3397fc
commit a70edfc49a
1 changed files with 2 additions and 0 deletions
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2
freebsd/sys/dev/ffec/if_ffec.c
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@@ -593,6 +593,7 @@ ffec_setup_txdesc(struct ffec_softc *sc, int idx, bus_addr_t paddr,
* significant bits. * significant bits.
*/ */
sc->txdesc_ring[idx].buf_paddr = (uint32_t)paddr; sc->txdesc_ring[idx].buf_paddr = (uint32_t)paddr;
wmb();
sc->txdesc_ring[idx].flags_len = flags | len; /* Must be set last! */ sc->txdesc_ring[idx].flags_len = flags | len; /* Must be set last! */
return (nidx); return (nidx);
@@ -739,6 +740,7 @@ ffec_setup_rxdesc(struct ffec_softc *sc, int idx, bus_addr_t paddr)
*/ */
nidx = next_rxidx(sc, idx); nidx = next_rxidx(sc, idx);
sc->rxdesc_ring[idx].buf_paddr = (uint32_t)paddr; sc->rxdesc_ring[idx].buf_paddr = (uint32_t)paddr;
wmb();
sc->rxdesc_ring[idx].flags_len = FEC_RXDESC_EMPTY | sc->rxdesc_ring[idx].flags_len = FEC_RXDESC_EMPTY |
((nidx == 0) ? FEC_RXDESC_WRAP : 0); ((nidx == 0) ? FEC_RXDESC_WRAP : 0);