Author: avos
Date: Mon Jan 7 03:36:33 2019
New Revision: 342827
URL: https://svnweb.freebsd.org/changeset/base/342827
Log:
MFC r342672:
rtwn_pci: fix excessive packet loss on Tx with RTL8188EE.
Use proper flags for bus_dmamap_sync() in Tx path.
MFC r342676:
rtwn_pci(4): use proper bus_dmamap_sync flags after Tx.
Modified:
stable/12/sys/dev/rtwn/pci/rtwn_pci_rx.c
stable/12/sys/dev/rtwn/pci/rtwn_pci_tx.c
Directory Properties:
stable/12/ (props changed)
Modified: stable/12/sys/dev/rtwn/pci/rtwn_pci_rx.c
==============================================================================
--- stable/12/sys/dev/rtwn/pci/rtwn_pci_rx.c Mon Jan 7 02:39:40 2019
(r342826)
+++ stable/12/sys/dev/rtwn/pci/rtwn_pci_rx.c Mon Jan 7 03:36:33 2019
(r342827)
@@ -197,7 +197,8 @@ rtwn_pci_tx_done(struct rtwn_softc *sc, int qid)
RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, "%s: qid %d, last %d, cur %d\n",
__func__, qid, ring->last, ring->cur);
- bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_POSTREAD);
+ bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
+ BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
while(ring->last != ring->cur) {
data = &ring->tx_data[ring->last];
Modified: stable/12/sys/dev/rtwn/pci/rtwn_pci_tx.c
==============================================================================
--- stable/12/sys/dev/rtwn/pci/rtwn_pci_tx.c Mon Jan 7 02:39:40 2019
(r342826)
+++ stable/12/sys/dev/rtwn/pci/rtwn_pci_tx.c Mon Jan 7 03:36:33 2019
(r342827)
@@ -174,8 +174,8 @@ rtwn_pci_tx_start_frame(struct rtwn_softc *sc, struct
rtwn_dump_tx_desc(sc, txd);
bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
- BUS_DMASYNC_POSTWRITE);
- bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTWRITE);
+ BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
+ bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
data->m = m;
data->ni = ni;
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