[PATCH 1/6]: powerpc/cell spidernet burst alignment patch

Linas Vepstas
2006-08-18T22:20:42Z

This patch increases the Burst Address alignment from 64 to 1024 in the
Spidernet driver. This improves transmit performance for arge packets
from about 100Mbps to 300-400Mbps.

From: James K Lewis <jklewis@us.ibm.com>
Signed-off-by: James K Lewis <jklewis@us.ibm.com>
Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Cc: Utz Bacher <utz.bacher@de.ibm.com>
Cc: Jens Osterkamp <Jens.Osterkamp@de.ibm.com>
Cc: Arnd Bergmann <arnd@arndb.de>

----
drivers/net/spider_net.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6.18-rc3-mm2/drivers/net/spider_net.h
===================================================================
--- linux-2.6.18-rc3-mm2.orig/drivers/net/spider_net.h 2006-08-07 14:37:10.000000000 -0500
+++ linux-2.6.18-rc3-mm2/drivers/net/spider_net.h 2006-08-11 11:09:57.000000000 -0500
@@ -209,7 +209,7 @@ extern char spider_net_driver_name[];
#define SPIDER_NET_DMA_RX_FEND_VALUE 0x00030003
/* to set TX_DMA_EN */
#define SPIDER_NET_TX_DMA_EN 0x80000000
-#define SPIDER_NET_GDTDCEIDIS 0x00000002
+#define SPIDER_NET_GDTDCEIDIS 0x00000302
#define SPIDER_NET_DMA_TX_VALUE SPIDER_NET_TX_DMA_EN | \
SPIDER_NET_GDTDCEIDIS
#define SPIDER_NET_DMA_TX_FEND_VALUE 0x00030003