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| author | Pyun YongHyeon <yongari@FreeBSD.org> | 2010-11-05 18:19:54 +0000 |
|---|---|---|
| committer | Pyun YongHyeon <yongari@FreeBSD.org> | 2010-11-05 18:19:54 +0000 |
| commit | 66366ca4bfc131cc2af441e7178cdf60997bcf9b (patch) | |
| tree | fb0192d95da8c563565fb58a8f9ce7663e1a054b /sys/dev | |
| parent | 0108cce0a4d60d00a34255f0ad17df3d01a05911 (diff) | |
| download | src-66366ca4bfc131cc2af441e7178cdf60997bcf9b.tar.gz src-66366ca4bfc131cc2af441e7178cdf60997bcf9b.zip | |
Enable 64bit DMA addressing for RTL810xE/RTL8168/RTL8111 PCIe
controllers. Some old PCI controllers may work with DAC but it was
known to be buggy so 64bit DMA addressing is used only on PCIe
controllers.
Notes
Notes:
svn path=/head/; revision=214840
Diffstat (limited to 'sys/dev')
| -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 8fd20b6a8327..f774e7114af0 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) { |