diff options
Diffstat (limited to 'sys/dev/re')
| -rw-r--r-- | sys/dev/re/if_re.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/sys/dev/re/if_re.c b/sys/dev/re/if_re.c index 8fd20b6..f774e71 100644 --- a/sys/dev/re/if_re.c +++ b/sys/dev/re/if_re.c @@ -934,6 +934,7 @@ re_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) static int re_allocmem(device_t dev, struct rl_softc *sc) { + bus_addr_t lowaddr; bus_size_t rx_list_size, tx_list_size; int error; int i; @@ -947,10 +948,13 @@ re_allocmem(device_t dev, struct rl_softc *sc) * register should be set. However some RealTek chips are known * to be buggy on DAC handling, therefore disable DAC by limiting * DMA address space to 32bit. PCIe variants of RealTek chips - * may not have the limitation but I took safer path. + * may not have the limitation. */ + lowaddr = BUS_SPACE_MAXADDR; + if ((sc->rl_flags & RL_FLAG_PCIE) == 0) + lowaddr = BUS_SPACE_MAXADDR_32BIT; error = bus_dma_tag_create(bus_get_dma_tag(dev), 1, 0, - BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, + lowaddr, BUS_SPACE_MAXADDR, NULL, NULL, BUS_SPACE_MAXSIZE_32BIT, 0, BUS_SPACE_MAXSIZE_32BIT, 0, NULL, NULL, &sc->rl_parent_tag); if (error) { |
