Author: yongari
Date: Tue Aug 31 18:48:09 2010
New Revision: 212065
URL: http://svn.freebsd.org/changeset/base/212065
Log:
Handle PAE case correctly. You cannot effectively specify a 4GB
boundary in PAE case so use a 2GB boundary for PAE as suggested by
jhb.
Pointed out by: jhb
Reviewed by: jhb
Modified:
head/sys/dev/bge/if_bge.c
head/sys/dev/bge/if_bgereg.h
Modified: head/sys/dev/bge/if_bge.c
==============================================================================
--- head/sys/dev/bge/if_bge.c Tue Aug 31 18:11:50 2010 (r212064)
+++ head/sys/dev/bge/if_bge.c Tue Aug 31 18:48:09 2010 (r212065)
@@ -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,
Modified: head/sys/dev/bge/if_bgereg.h
==============================================================================
--- head/sys/dev/bge/if_bgereg.h Tue Aug 31 18:11:50 2010
(r212064)
+++ head/sys/dev/bge/if_bgereg.h Tue Aug 31 18:48:09 2010
(r212065)
@@ -2487,10 +2487,14 @@ struct bge_gib {
#define BGE_DMA_MAXADDR 0xFFFFFFFFFF
#endif
+#ifdef PAE
+#define BGE_DMA_BNDRY 0x80000000
+#else
#if (BUS_SPACE_MAXADDR > 0xFFFFFFFF)
-#define BGE_DMA_4G_BNDRY 0x100000000
+#define BGE_DMA_BNDRY 0x100000000
#else
-#define BGE_DMA_4G_BNDRY 0
+#define BGE_DMA_BNDRY 0
+#endif
#endif
/*
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