From mboxrd@z Thu Jan 1 00:00:00 1970 From: Brice Goglin Subject: [PATCH 1/1] myri10ge: write as 2 32-byte blocks in myri10ge_submit_8rx Date: Tue, 05 Dec 2006 17:26:27 +0100 Message-ID: <45759DB3.3020905@myri.com> References: <4573F8ED.3050304@myri.com> <4573F97B.90707@myri.com> <4574B0F9.9070409@garzik.org> <45759016.3050207@myri.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org Return-path: Received: from h-66-166-126-70.lsanca54.covad.net ([66.166.126.70]:57149 "EHLO myri.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S968427AbWLEQ0q (ORCPT ); Tue, 5 Dec 2006 11:26:46 -0500 To: Jeff Garzik In-Reply-To: <45759016.3050207@myri.com> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org In the myri10ge_submit_8rx() routine, write the 64 byte request block as 2 32-byte blocks so that it is handled by the hardware pio write handler if write-combining is enabled. Signed-off-by: Brice Goglin --- drivers/net/myri10ge/myri10ge.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) Index: netdev-2.6/drivers/net/myri10ge/myri10ge.c =================================================================== --- netdev-2.6.orig/drivers/net/myri10ge/myri10ge.c 2006-12-05 16:29:14.000000000 +0100 +++ netdev-2.6/drivers/net/myri10ge/myri10ge.c 2006-12-05 16:30:08.000000000 +0100 @@ -795,7 +795,9 @@ low = src->addr_low; src->addr_low = htonl(DMA_32BIT_MASK); - myri10ge_pio_copy(dst, src, 8 * sizeof(*src)); + myri10ge_pio_copy(dst, src, 4 * sizeof(*src)); + mb(); + myri10ge_pio_copy(dst + 4, src + 4, 4 * sizeof(*src)); mb(); src->addr_low = low; put_be32(low, &dst->addr_low);