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64bit DMA caused data corruption. Unfortunately there is no known

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workaround to use 64bit DMA.
Disable 64bit DMA on Attansic L1 controller.

Tested by:	Yamagi Burmeister (lists <> yamagi dot org)
MFC after:	1 week
This commit is contained in:
Pyun YongHyeon 2011-04-01 16:45:26 +00:00
parent dc49da9761
commit 525e40979b
1 changed files with 4 additions and 1 deletions
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5
sys/dev/age/if_age.c
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@ -1092,11 +1092,14 @@ age_dma_alloc(struct age_softc *sc)
* 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 */