From: Rob Herring <robherring2@gmail.com>
To: netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: "David S. Miller" <davem@davemloft.net>,
Rob Herring <rob.herring@calxeda.com>
Subject: [PATCH 4/4] net: calxedaxgmac: enable rx cut-thru mode
Date: Mon, 9 Jul 2012 19:16:10 -0500 [thread overview]
Message-ID: <1341879370-23385-5-git-send-email-robherring2@gmail.com> (raw)
In-Reply-To: <1341879370-23385-1-git-send-email-robherring2@gmail.com>
From: Rob Herring <rob.herring@calxeda.com>
Enabling RX cut-thru mode yields better performance as received frames
start getting written to memory before a whole frame is received.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
---
drivers/net/ethernet/calxeda/xgmac.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/calxeda/xgmac.c b/drivers/net/ethernet/calxeda/xgmac.c
index abb8f40..2b4b4f5 100644
--- a/drivers/net/ethernet/calxeda/xgmac.c
+++ b/drivers/net/ethernet/calxeda/xgmac.c
@@ -264,7 +264,7 @@
#define XGMAC_OMR_FEF 0x00000080 /* Forward Error Frames */
#define XGMAC_OMR_DT 0x00000040 /* Drop TCP/IP csum Errors */
#define XGMAC_OMR_RSF 0x00000020 /* RX FIFO Store and Forward */
-#define XGMAC_OMR_RTC 0x00000010 /* RX Threshhold Ctrl */
+#define XGMAC_OMR_RTC_256 0x00000018 /* RX Threshhold Ctrl */
#define XGMAC_OMR_RTC_MASK 0x00000018 /* RX Threshhold Ctrl MASK */
/* XGMAC HW Features Register */
@@ -982,7 +982,8 @@ static int xgmac_hw_init(struct net_device *dev)
writel(value, ioaddr + XGMAC_DMA_CONTROL);
/* Set the HW DMA mode and the COE */
- writel(XGMAC_OMR_TSF | XGMAC_OMR_RSF | XGMAC_OMR_RFD | XGMAC_OMR_RFA,
+ writel(XGMAC_OMR_TSF | XGMAC_OMR_RFD | XGMAC_OMR_RFA |
+ XGMAC_OMR_RTC_256,
ioaddr + XGMAC_OMR);
/* Reset the MMC counters */
--
1.7.9.5
next prev parent reply other threads:[~2012-07-10 0:16 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-10 0:16 [PATCH 0/4] Calxeda xgmac fixes and performance improvements Rob Herring
2012-07-10 0:16 ` [PATCH 1/4] net: calxedaxgmac: fix net timeout recovery Rob Herring
2012-07-10 0:16 ` [PATCH 2/4] net: calxedaxgmac: fix hang on rx refill Rob Herring
2012-07-10 0:16 ` [PATCH 3/4] net: calxedaxgmac: set outstanding AXI bus transactions to 8 Rob Herring
2012-07-10 0:16 ` Rob Herring [this message]
2012-07-11 6:27 ` [PATCH 0/4] Calxeda xgmac fixes and performance improvements David Miller
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1341879370-23385-5-git-send-email-robherring2@gmail.com \
--to=robherring2@gmail.com \
--cc=davem@davemloft.net \
--cc=linux-kernel@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=rob.herring@calxeda.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).