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Limit hardware bug workaround to controllers that have 4GB boundary

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bug instead of blindly applying it to all controllers.

Pointed out by:	marius
MFC after:	3 days
This commit is contained in:
Pyun YongHyeon 2011-01-04 20:06:26 +00:00
parent ab19dbcf8d
commit baceff2f49
1 changed files with 4 additions and 1 deletions
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5
sys/dev/bge/if_bge.c
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@ -2482,8 +2482,11 @@ bge_dma_alloc(struct bge_softc *sc)
* restriction and limit DMA address space to 32bit. It's not
* clear whether there is another hardware issue here.
*/
lowaddr = BUS_SPACE_MAXADDR;
if ((sc->bge_flags & BGE_FLAG_40BIT_BUG) != 0)
lowaddr = BUS_SPACE_MAXADDR_32BIT;
error = bus_dma_tag_create(bus_get_dma_tag(sc->bge_dev),
1, 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL,
1, 0, lowaddr, BUS_SPACE_MAXADDR, NULL,
NULL, BUS_SPACE_MAXSIZE_32BIT, 0, BUS_SPACE_MAXSIZE_32BIT,
0, NULL, NULL, &sc->bge_cdata.bge_buffer_tag);
if (error != 0) {