From 530d0376ecabc0c9766e9d14ccc5b045a1c5981d Mon Sep 17 00:00:00 2001 From: yongari Date: Tue, 10 Nov 2009 20:29:20 +0000 Subject: Controller does not update Tx descriptors(send BDs) after sending frames so remove unnecessary BUS_DMASYNC_PREREAD and BUS_DMASYNC_POSTREAD of bus_dmamap_sync(9). --- sys/dev/bge/if_bge.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/sys/dev/bge/if_bge.c b/sys/dev/bge/if_bge.c index 3ecbcbe..0a1db82 100644 --- a/sys/dev/bge/if_bge.c +++ b/sys/dev/bge/if_bge.c @@ -1165,8 +1165,7 @@ bge_init_tx_ring(struct bge_softc *sc) bzero(sc->bge_ldata.bge_tx_ring, BGE_TX_RING_SZ); bus_dmamap_sync(sc->bge_cdata.bge_tx_ring_tag, - sc->bge_cdata.bge_tx_ring_map, - BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); + sc->bge_cdata.bge_tx_ring_map, BUS_DMASYNC_PREWRITE); /* Initialize transmit producer index for host-memory send ring. */ sc->bge_tx_prodidx = 0; @@ -3323,8 +3322,7 @@ bge_txeof(struct bge_softc *sc) ifp = sc->bge_ifp; bus_dmamap_sync(sc->bge_cdata.bge_tx_ring_tag, - sc->bge_cdata.bge_tx_ring_map, - BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); + sc->bge_cdata.bge_tx_ring_map, BUS_DMASYNC_POSTWRITE); /* * Go through our tx ring and free mbufs for those * frames that have been sent. @@ -3834,8 +3832,7 @@ bge_start_locked(struct ifnet *ifp) return; bus_dmamap_sync(sc->bge_cdata.bge_tx_ring_tag, - sc->bge_cdata.bge_tx_ring_map, - BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); + sc->bge_cdata.bge_tx_ring_map, BUS_DMASYNC_PREWRITE); /* Transmit. */ bge_writembx(sc, BGE_MBX_TX_HOST_PROD0_LO, prodidx); /* 5700 b2 errata */ -- cgit v1.1