svn commit: r183892 - stable/7/sys/dev/twa

[Xin LI]

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 */