Switch all bus_dmamap_sync calls that used PREREAD to PREWRITE and all

POSTWRITE to POSTREAD.

No guarantee that all busdma is usage is perfect, but this change (in
addition to scott's last two commits) makes if_bfe work with > 1GB of
memory in my laptop.

1 files changed, 10 insertions, 10 deletions

diff --git a/sys/dev/bfe/if_bfe.c b/sys/dev/bfe/if_bfe.c
index f080b5d..311a819 100644
--- a/sys/dev/bfe/if_bfe.c
+++ b/sys/dev/bfe/if_bfe.c
@@ -302,7 +302,7 @@ bfe_dma_alloc(device_t dev)
 	if(error)
 		return (ENOMEM);
 
-	bus_dmamap_sync(sc->bfe_rx_tag, sc->bfe_rx_map, BUS_DMASYNC_PREREAD);
+	bus_dmamap_sync(sc->bfe_rx_tag, sc->bfe_rx_map, BUS_DMASYNC_PREWRITE);
 
 	error = bus_dmamem_alloc(sc->bfe_tx_tag, (void *)&sc->bfe_tx_list,
 			BUS_DMA_NOWAIT, &sc->bfe_tx_map);
@@ -317,7 +317,7 @@ bfe_dma_alloc(device_t dev)
 		return (ENOMEM);
 
 	bzero(sc->bfe_tx_list, BFE_TX_LIST_SIZE);
-	bus_dmamap_sync(sc->bfe_tx_tag, sc->bfe_tx_map, BUS_DMASYNC_PREREAD);
+	bus_dmamap_sync(sc->bfe_tx_tag, sc->bfe_tx_map, BUS_DMASYNC_PREWRITE);
 
 	return (0);
 }
@@ -527,7 +527,7 @@ bfe_tx_ring_free(struct bfe_softc *sc)
 		}
 	}
 	bzero(sc->bfe_tx_list, BFE_TX_LIST_SIZE);
-	bus_dmamap_sync(sc->bfe_tx_tag, sc->bfe_tx_map, BUS_DMASYNC_PREREAD);
+	bus_dmamap_sync(sc->bfe_tx_tag, sc->bfe_tx_map, BUS_DMASYNC_PREWRITE);
 }
 
 static void
@@ -544,7 +544,7 @@ bfe_rx_ring_free(struct bfe_softc *sc)
 		}
 	}
 	bzero(sc->bfe_rx_list, BFE_RX_LIST_SIZE);
-	bus_dmamap_sync(sc->bfe_rx_tag, sc->bfe_rx_map, BUS_DMASYNC_PREREAD);
+	bus_dmamap_sync(sc->bfe_rx_tag, sc->bfe_rx_map, BUS_DMASYNC_PREWRITE);
 }
 
 static int
@@ -557,7 +557,7 @@ bfe_list_rx_init(struct bfe_softc *sc)
 			return (ENOBUFS);
 	}
 
-	bus_dmamap_sync(sc->bfe_rx_tag, sc->bfe_rx_map, BUS_DMASYNC_PREREAD);
+	bus_dmamap_sync(sc->bfe_rx_tag, sc->bfe_rx_map, BUS_DMASYNC_PREWRITE);
 	CSR_WRITE_4(sc, BFE_DMARX_PTR, (i * sizeof(struct bfe_desc)));
 
 	sc->bfe_rx_cons = 0;
@@ -595,7 +595,7 @@ bfe_list_newbuf(struct bfe_softc *sc, int c, struct mbuf *m)
 	r = &sc->bfe_rx_ring[c];
 	bus_dmamap_load(sc->bfe_tag, r->bfe_map, mtod(m, void *),
 			MCLBYTES, bfe_dma_map_desc, d, 0);
-	bus_dmamap_sync(sc->bfe_tag, r->bfe_map, BUS_DMASYNC_PREREAD);
+	bus_dmamap_sync(sc->bfe_tag, r->bfe_map, BUS_DMASYNC_PREWRITE);
 
 	ctrl = ETHER_MAX_LEN + 32;
 
@@ -604,7 +604,7 @@ bfe_list_newbuf(struct bfe_softc *sc, int c, struct mbuf *m)
 
 	d->bfe_ctrl = ctrl;
 	r->bfe_mbuf = m;
-	bus_dmamap_sync(sc->bfe_rx_tag, sc->bfe_rx_map, BUS_DMASYNC_PREREAD);
+	bus_dmamap_sync(sc->bfe_rx_tag, sc->bfe_rx_map, BUS_DMASYNC_PREWRITE);
 	return (0);
 }
 
@@ -1139,7 +1139,7 @@ bfe_rxeof(struct bfe_softc *sc)
 		r = &sc->bfe_rx_ring[cons];
 		m = r->bfe_mbuf;
 		rxheader = mtod(m, struct bfe_rxheader*);
-		bus_dmamap_sync(sc->bfe_tag, r->bfe_map, BUS_DMASYNC_POSTWRITE);
+		bus_dmamap_sync(sc->bfe_tag, r->bfe_map, BUS_DMASYNC_POSTREAD);
 		len = rxheader->len;
 		r->bfe_mbuf = NULL;
 
@@ -1301,7 +1301,7 @@ bfe_encap(struct bfe_softc *sc, struct mbuf *m_head, u_int32_t *txidx)
 			    r->bfe_map, mtod(m, void*), m->m_len,
 			    bfe_dma_map_desc, d, 0);
 			bus_dmamap_sync(sc->bfe_tag, r->bfe_map,
-			    BUS_DMASYNC_PREREAD);
+			    BUS_DMASYNC_PREWRITE);
 
 			frag = cur;
 			BFE_INC(cur, BFE_TX_LIST_CNT);
@@ -1314,7 +1314,7 @@ bfe_encap(struct bfe_softc *sc, struct mbuf *m_head, u_int32_t *txidx)
 
 	sc->bfe_tx_list[frag].bfe_ctrl |= BFE_DESC_EOF;
 	sc->bfe_tx_ring[frag].bfe_mbuf = m_head;
-	bus_dmamap_sync(sc->bfe_tx_tag, sc->bfe_tx_map, BUS_DMASYNC_PREREAD);
+	bus_dmamap_sync(sc->bfe_tx_tag, sc->bfe_tx_map, BUS_DMASYNC_PREWRITE);
 
 	*txidx = cur;
 	sc->bfe_tx_cnt += cnt;