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Call bus_dmamap_sync() only after TX DPD update.

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This commit is contained in:
Pyun YongHyeon 2011-05-06 22:36:43 +00:00
parent 6ed74a0a1c
commit 0ecf6b16c8
1 changed files with 4 additions and 4 deletions
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8
sys/dev/xl/if_xl.c
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@ -2644,8 +2644,6 @@ xl_start_locked(struct ifnet *ifp)
* once for each packet.
*/
cur_tx->xl_ptr->xl_status |= htole32(XL_TXSTAT_DL_INTR);
bus_dmamap_sync(sc->xl_ldata.xl_tx_tag, sc->xl_ldata.xl_tx_dmamap,
BUS_DMASYNC_PREWRITE);
/*
* Queue the packets. If the TX channel is clear, update
@ -2666,6 +2664,8 @@ xl_start_locked(struct ifnet *ifp)
sc->xl_cdata.xl_tx_head = start_tx;
sc->xl_cdata.xl_tx_tail = cur_tx;
}
bus_dmamap_sync(sc->xl_ldata.xl_tx_tag, sc->xl_ldata.xl_tx_dmamap,
BUS_DMASYNC_PREWRITE);
if (!CSR_READ_4(sc, XL_DOWNLIST_PTR))
CSR_WRITE_4(sc, XL_DOWNLIST_PTR, start_tx->xl_phys);
@ -2765,12 +2765,12 @@ xl_start_90xB_locked(struct ifnet *ifp)
* once for each packet.
*/
cur_tx->xl_ptr->xl_status |= htole32(XL_TXSTAT_DL_INTR);
bus_dmamap_sync(sc->xl_ldata.xl_tx_tag, sc->xl_ldata.xl_tx_dmamap,
BUS_DMASYNC_PREWRITE);
/* Start transmission */
sc->xl_cdata.xl_tx_prod = idx;
start_tx->xl_prev->xl_ptr->xl_next = htole32(start_tx->xl_phys);
bus_dmamap_sync(sc->xl_ldata.xl_tx_tag, sc->xl_ldata.xl_tx_dmamap,
BUS_DMASYNC_PREWRITE);
/*
* Set a timeout in case the chip goes out to lunch.