From: Jose Abreu <Jose.Abreu@synopsys.com>
To: netdev@vger.kernel.org
Cc: Joao Pinto <Joao.Pinto@synopsys.com>,
Jose Abreu <Jose.Abreu@synopsys.com>,
Giuseppe Cavallaro <peppe.cavallaro@st.com>,
Alexandre Torgue <alexandre.torgue@st.com>,
Jose Abreu <Jose.Abreu@synopsys.com>,
"David S. Miller" <davem@davemloft.net>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH net-next 4/7] net: stmmac: gmac4+: Remove uneeded computation for RFA/RFD
Date: Wed, 13 Nov 2019 16:12:05 +0100 [thread overview]
Message-ID: <5a9448921e64623d809224a3b42d136906b84dfb.1573657592.git.Jose.Abreu@synopsys.com> (raw)
In-Reply-To: <cover.1573657592.git.Jose.Abreu@synopsys.com>
In-Reply-To: <cover.1573657592.git.Jose.Abreu@synopsys.com>
RFA and RFD should not be dependent on FIFO size. In fact, the more FIFO
space we have, the later we can activate Flow Control. Let's use
hard-coded values for RFA and RFD for all FIFO sizes with the exception
of 4k, which is a special case.
Signed-off-by: Jose Abreu <Jose.Abreu@synopsys.com>
---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c | 14 ++------------
1 file changed, 2 insertions(+), 12 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c
index 36a0af8bf89f..c15409030710 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c
@@ -252,19 +252,9 @@ static void dwmac4_dma_rx_chan_op_mode(void __iomem *ioaddr, int mode,
rfa = 0x01; /* Full-1.5K */
break;
- case 8192:
- rfd = 0x06; /* Full-4K */
- rfa = 0x0a; /* Full-6K */
- break;
-
- case 16384:
- rfd = 0x06; /* Full-4K */
- rfa = 0x12; /* Full-10K */
- break;
-
default:
- rfd = 0x06; /* Full-4K */
- rfa = 0x1e; /* Full-16K */
+ rfd = 0x07; /* Full-4.5K */
+ rfa = 0x04; /* Full-3K */
break;
}
--
2.7.4
next prev parent reply other threads:[~2019-11-13 15:12 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-13 15:12 [PATCH net-next 0/7] net: stmmac: CPU Performance Improvements Jose Abreu
2019-11-13 15:12 ` [PATCH net-next 1/7] net: stmmac: Do not set RX IC bit if RX Coalesce is zero Jose Abreu
2019-11-13 15:12 ` [PATCH net-next 2/7] net: stmmac: Setup a default RX Coalesce value instead of the minimum Jose Abreu
2019-11-13 15:12 ` [PATCH net-next 3/7] net: stmmac: gmac4+: Enable the TBU Interrupt Jose Abreu
2019-11-13 15:12 ` Jose Abreu [this message]
2019-11-13 15:12 ` [PATCH net-next 5/7] net: stmmac: xgmac: Remove uneeded computation for RFA/RFD Jose Abreu
2019-11-13 15:12 ` [PATCH net-next 6/7] net: stmmac: Tune-up default coalesce settings Jose Abreu
2019-11-13 15:12 ` [PATCH net-next 7/7] net: stmmac: TX Coalesce should be per-packet Jose Abreu
2019-11-14 10:59 ` [PATCH net-next 0/7] net: stmmac: CPU Performance Improvements Jose Abreu
2019-11-14 21:34 ` 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=5a9448921e64623d809224a3b42d136906b84dfb.1573657592.git.Jose.Abreu@synopsys.com \
--to=jose.abreu@synopsys.com \
--cc=Joao.Pinto@synopsys.com \
--cc=alexandre.torgue@st.com \
--cc=davem@davemloft.net \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-stm32@st-md-mailman.stormreply.com \
--cc=mcoquelin.stm32@gmail.com \
--cc=netdev@vger.kernel.org \
--cc=peppe.cavallaro@st.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).