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| author | yongari <yongari@FreeBSD.org> | 2011-04-01 16:45:26 +0000 |
|---|---|---|
| committer | yongari <yongari@FreeBSD.org> | 2011-04-01 16:45:26 +0000 |
| commit | a5be52d8024f41fc3cdd6c5fdb1ca746a0e9028e (patch) | |
| tree | d13873f3b51da80cf5a15e91508498d373f9fc03 /sys/dev/age | |
| parent | 9a8bd81a8442e84e6e92eb038cc48b8a61aef98d (diff) | |
| download | FreeBSD-src-a5be52d8024f41fc3cdd6c5fdb1ca746a0e9028e.zip FreeBSD-src-a5be52d8024f41fc3cdd6c5fdb1ca746a0e9028e.tar.gz | |
64bit DMA caused data corruption. Unfortunately there is no known
workaround to use 64bit DMA.
Disable 64bit DMA on Attansic L1 controller.
Tested by: Yamagi Burmeister (lists <> yamagi dot org)
MFC after: 1 week
Diffstat (limited to 'sys/dev/age')
| -rw-r--r-- | sys/dev/age/if_age.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sys/dev/age/if_age.c b/sys/dev/age/if_age.c index d57a51d..c3e95be 100644 --- a/sys/dev/age/if_age.c +++ b/sys/dev/age/if_age.c @@ -1092,11 +1092,14 @@ again: * Create Tx/Rx buffer parent tag. * L1 supports full 64bit DMA addressing in Tx/Rx buffers * so it needs separate parent DMA tag. + * XXX + * It seems enabling 64bit DMA causes data corruption. Limit + * DMA address space to 32bit. */ error = bus_dma_tag_create( bus_get_dma_tag(sc->age_dev), /* parent */ 1, 0, /* alignment, boundary */ - BUS_SPACE_MAXADDR, /* lowaddr */ + BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ BUS_SPACE_MAXADDR, /* highaddr */ NULL, NULL, /* filter, filterarg */ BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ |
