diff options
| -rw-r--r-- | sys/dev/bge/if_bge.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/sys/dev/bge/if_bge.c b/sys/dev/bge/if_bge.c index 09d790ecb4ce..0fb31734ba67 100644 --- a/sys/dev/bge/if_bge.c +++ b/sys/dev/bge/if_bge.c @@ -2479,8 +2479,18 @@ bge_dma_alloc(struct bge_softc *sc) /* Create parent tag for buffers. */ boundary = 0; - if ((sc->bge_flags & BGE_FLAG_4G_BNDRY_BUG) != 0) + if ((sc->bge_flags & BGE_FLAG_4G_BNDRY_BUG) != 0) { boundary = BGE_DMA_BNDRY; + /* + * XXX + * watchdog timeout issue was observed on BCM5704 which + * lives behind PCI-X bridge(e.g AMD 8131 PCI-X bridge). + * Limiting DMA address space to 32bits seems to address + * it. + */ + if (sc->bge_flags & BGE_FLAG_PCIX) + lowaddr = BUS_SPACE_MAXADDR_32BIT; + } error = bus_dma_tag_create(bus_get_dma_tag(sc->bge_dev), 1, boundary, lowaddr, BUS_SPACE_MAXADDR, NULL, NULL, BUS_SPACE_MAXSIZE_32BIT, 0, BUS_SPACE_MAXSIZE_32BIT, |