From mboxrd@z Thu Jan 1 00:00:00 1970 From: linas@austin.ibm.com (Linas Vepstas) Subject: [PATCH 1/6]: powerpc/cell spidernet burst alignment patch Date: Fri, 18 Aug 2006 17:20:38 -0500 Message-ID: <20060818222038.GH26889@austin.ibm.com> References: <20060818220700.GG26889@austin.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: akpm@osdl.org, Arnd Bergmann , netdev@vger.kernel.org, James K Lewis , linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org, ens Osterkamp Return-path: Received: from e2.ny.us.ibm.com ([32.97.182.142]:32454 "EHLO e2.ny.us.ibm.com") by vger.kernel.org with ESMTP id S1751522AbWHRWUl (ORCPT ); Fri, 18 Aug 2006 18:20:41 -0400 To: Jeff Garzik Content-Disposition: inline In-Reply-To: <20060818220700.GG26889@austin.ibm.com> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org 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 Signed-off-by: James K Lewis Signed-off-by: Linas Vepstas Cc: Utz Bacher Cc: Jens Osterkamp Cc: Arnd Bergmann ---- 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