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Handle PAE case correctly. You cannot effectively specify a 4GB

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boundary in PAE case so use a 2GB boundary for PAE as suggested by
jhb.

Pointed out by:	jhb
Reviewed by:	jhb
This commit is contained in:
Pyun YongHyeon 2010-08-31 18:48:09 +00:00
parent 227209559d
commit 38cc61518b
2 changed files with 8 additions and 4 deletions
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2
sys/dev/bge/if_bge.c
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@ -2272,7 +2272,7 @@ bge_dma_alloc(struct bge_softc *sc)
/* Create parent tag for buffers. */
boundary = 0;
if ((sc->bge_flags & BGE_FLAG_4G_BNDRY_BUG) != 0)
boundary = BGE_DMA_4G_BNDRY;
boundary = BGE_DMA_BNDRY;
error = bus_dma_tag_create(bus_get_dma_tag(sc->bge_dev),
1, boundary, lowaddr, BUS_SPACE_MAXADDR, NULL,
NULL, BUS_SPACE_MAXSIZE_32BIT, 0, BUS_SPACE_MAXSIZE_32BIT,

10
sys/dev/bge/if_bgereg.h
View File

@ -2487,10 +2487,14 @@ struct bge_gib {
#define BGE_DMA_MAXADDR 0xFFFFFFFFFF
#endif
#if (BUS_SPACE_MAXADDR > 0xFFFFFFFF)
#define BGE_DMA_4G_BNDRY 0x100000000
#ifdef PAE
#define BGE_DMA_BNDRY 0x80000000
#else
#define BGE_DMA_4G_BNDRY 0
#if (BUS_SPACE_MAXADDR > 0xFFFFFFFF)
#define BGE_DMA_BNDRY 0x100000000
#else
#define BGE_DMA_BNDRY 0
#endif
#endif
/*