svn commit: r199327 - stable/8/sys/dev/e1000

[Jack F Vogel]

Author: jfv
Date: Mon Nov 16 18:58:45 2009
New Revision: 199327
URL: http://svn.freebsd.org/changeset/base/199327

Log:
  On a 32 bit kernel the igb driver may cause a page
  fault panic due to a failed bounce page allocation
  during RX mbuf setup. The large demand on bounce pages
  is due to the alignment requirement in the tag. This
  restriction was removed in the ixgbe driver with no
  ill effects and so is being removed here also.

Modified:
  stable/8/sys/dev/e1000/if_igb.c
Directory Properties:
  stable/8/sys/   (props changed)
  stable/8/sys/amd64/include/xen/   (props changed)
  stable/8/sys/cddl/contrib/opensolaris/   (props changed)
  stable/8/sys/contrib/dev/acpica/   (props changed)
  stable/8/sys/contrib/pf/   (props changed)
  stable/8/sys/dev/xen/xenpci/   (props changed)
  stable/8/sys/netinet6/   (props changed)

Modified: stable/8/sys/dev/e1000/if_igb.c
==============================================================================
--- stable/8/sys/dev/e1000/if_igb.c	Mon Nov 16 18:50:51 2009	(r199326)
+++ stable/8/sys/dev/e1000/if_igb.c	Mon Nov 16 18:58:45 2009	(r199327)
@@ -2654,7 +2654,7 @@ igb_dma_malloc(struct adapter *adapter, 
 	int error;
 
 	error = bus_dma_tag_create(bus_get_dma_tag(adapter->dev), /* parent */
-				IGB_DBA_ALIGN, 0,	/* alignment, bounds */
+				1, 0,			/* alignment, bounds */
 				BUS_SPACE_MAXADDR,	/* lowaddr */
 				BUS_SPACE_MAXADDR,	/* highaddr */
 				NULL, NULL,		/* filter, filterarg */
@@ -2867,7 +2867,7 @@ igb_allocate_transmit_buffers(struct tx_
 	 * Setup DMA descriptor areas.
 	 */
 	if ((error = bus_dma_tag_create(NULL,		/* parent */
-			       PAGE_SIZE, 0,		/* alignment, bounds */
+			       1, 0,			/* alignment, bounds */
 			       BUS_SPACE_MAXADDR,	/* lowaddr */
 			       BUS_SPACE_MAXADDR,	/* highaddr */
 			       NULL, NULL,		/* filter, filterarg */
@@ -3554,7 +3554,7 @@ igb_allocate_receive_buffers(struct rx_r
 	** it may not always use this.
 	*/
 	if ((error = bus_dma_tag_create(NULL,		/* parent */
-				   PAGE_SIZE, 0,	/* alignment, bounds */
+				   1, 0,		/* alignment, bounds */
 				   BUS_SPACE_MAXADDR,	/* lowaddr */
 				   BUS_SPACE_MAXADDR,	/* highaddr */
 				   NULL, NULL,		/* filter, filterarg */