Author: delphij
Date: Tue Oct 14 19:02:47 2008
New Revision: 183892
URL: http://svn.freebsd.org/changeset/base/183892
Log:
MFC r183660: Limit DMA memory to lower addressable 4GB, without
this patch, we can reliably provoke data corruption on systems
equipped with a plenty of memory during high load.
Approved by: re (kib)
Modified:
stable/7/sys/dev/twa/ (props changed)
stable/7/sys/dev/twa/tw_osl_freebsd.c
Modified: stable/7/sys/dev/twa/tw_osl_freebsd.c
==============================================================================
--- stable/7/sys/dev/twa/tw_osl_freebsd.c Tue Oct 14 18:24:40 2008
(r183891)
+++ stable/7/sys/dev/twa/tw_osl_freebsd.c Tue Oct 14 19:02:47 2008
(r183892)
@@ -492,7 +492,7 @@ tw_osli_alloc_mem(struct twa_softc *sc)
if (bus_dma_tag_create(NULL, /* parent */
sc->alignment, /* alignment */
0, /* boundary */
- BUS_SPACE_MAXADDR, /* lowaddr */
+ BUS_SPACE_MAXADDR_32BIT,/* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
TW_CL_MAX_IO_SIZE, /* maxsize */
@@ -515,7 +515,7 @@ tw_osli_alloc_mem(struct twa_softc *sc)
if (bus_dma_tag_create(sc->parent_tag, /* parent */
sc->alignment, /* alignment */
0, /* boundary */
- BUS_SPACE_MAXADDR, /* lowaddr */
+ BUS_SPACE_MAXADDR_32BIT,/* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
dma_mem_size, /* maxsize */
@@ -562,7 +562,7 @@ tw_osli_alloc_mem(struct twa_softc *sc)
if (bus_dma_tag_create(sc->parent_tag, /* parent */
sc->alignment, /* alignment */
0, /* boundary */
- BUS_SPACE_MAXADDR, /* lowaddr */
+ BUS_SPACE_MAXADDR_32BIT,/* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
TW_CL_MAX_IO_SIZE, /* maxsize */
@@ -588,7 +588,7 @@ tw_osli_alloc_mem(struct twa_softc *sc)
if (bus_dma_tag_create(sc->parent_tag, /* parent */
sc->alignment, /* alignment */
0, /* boundary */
- BUS_SPACE_MAXADDR, /* lowaddr */
+ BUS_SPACE_MAXADDR_32BIT,/* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
TW_CL_MAX_IO_SIZE, /* maxsize */
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