From: Maxime Chevallier <maxime.chevallier@bootlin.com>
To: davem@davemloft.net
Cc: Maxime Chevallier <maxime.chevallier@bootlin.com>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
Antoine Tenart <antoine.tenart@bootlin.com>,
thomas.petazzoni@bootlin.com, gregory.clement@bootlin.com,
miquel.raynal@bootlin.com, nadavh@marvell.com,
stefanc@marvell.com, mw@semihalf.com,
Russell King <linux@armlinux.org.uk>,
linux-arm-kernel@lists.infradead.org,
Alan Winkowski <walan@marvell.com>
Subject: [PATCH net-next 2/5] net: mvpp2: cls: Bypass C2 internals FIFOs at init
Date: Fri, 24 May 2019 12:05:51 +0200 [thread overview]
Message-ID: <20190524100554.8606-3-maxime.chevallier@bootlin.com> (raw)
In-Reply-To: <20190524100554.8606-1-maxime.chevallier@bootlin.com>
The C2 TCAM has internal FIFOs that are only useful for the built-in
self-tests. Disable these FIFOS at init, as recommended in the
functionnal specs.
Suggested-by: Alan Winkowski <walan@marvell.com>
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
---
drivers/net/ethernet/marvell/mvpp2/mvpp2.h | 2 ++
drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.c | 6 ++++++
2 files changed, 8 insertions(+)
diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2.h b/drivers/net/ethernet/marvell/mvpp2/mvpp2.h
index d5df813e08c4..bb466af9434b 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2.h
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2.h
@@ -148,6 +148,8 @@
#define MVPP22_CLS_C2_ATTR2 0x1b6c
#define MVPP22_CLS_C2_ATTR2_RSS_EN BIT(30)
#define MVPP22_CLS_C2_ATTR3 0x1b70
+#define MVPP22_CLS_C2_TCAM_CTRL 0x1b90
+#define MVPP22_CLS_C2_TCAM_BYPASS_FIFO BIT(0)
/* Descriptor Manager Top Registers */
#define MVPP2_RXQ_NUM_REG 0x2040
diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.c
index 9ce73297276e..d549e9a29d9a 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.c
@@ -923,6 +923,12 @@ void mvpp2_cls_init(struct mvpp2 *priv)
mvpp2_cls_c2_write(priv, &c2);
}
+ /* Disable the FIFO stages in C2 engine, which are only used in BIST
+ * mode
+ */
+ mvpp2_write(priv, MVPP22_CLS_C2_TCAM_CTRL,
+ MVPP22_CLS_C2_TCAM_BYPASS_FIFO);
+
mvpp2_cls_port_init_flows(priv);
}
--
2.20.1
next prev parent reply other threads:[~2019-05-24 10:06 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-24 10:05 [PATCH net-next 0/5] net: mvpp2: Classifier updates, RSS Maxime Chevallier
2019-05-24 10:05 ` [PATCH net-next 1/5] net: mvpp2: cls: Use the correct number of rules in various places Maxime Chevallier
2019-05-24 10:05 ` Maxime Chevallier [this message]
2019-05-24 10:05 ` [PATCH net-next 3/5] net: mvpp2: cls: Use RSS contexts to handle RSS tables Maxime Chevallier
2020-04-13 23:43 ` Matteo Croce
2020-04-23 17:00 ` Russell King - ARM Linux admin
2020-05-09 0:12 ` Matteo Croce
2020-05-09 11:15 ` [EXT] " Stefan Chulski
2020-05-09 11:45 ` Russell King - ARM Linux admin
2020-05-09 12:16 ` Thomas Petazzoni
2020-05-09 12:48 ` Russell King - ARM Linux admin
2020-05-09 13:10 ` Thomas Petazzoni
2020-05-09 13:14 ` Matteo Croce
2020-05-09 13:51 ` Russell King - ARM Linux admin
2020-05-09 14:48 ` Russell King - ARM Linux admin
2020-05-09 15:31 ` Matteo Croce
2020-05-09 19:52 ` Russell King - ARM Linux admin
2020-05-09 20:20 ` Russell King - ARM Linux admin
2020-05-19 9:53 ` Russell King - ARM Linux admin
2020-05-19 10:05 ` Matteo Croce
2020-05-19 17:05 ` Matteo Croce
2020-05-20 11:10 ` Russell King - ARM Linux admin
2020-05-20 11:16 ` Matteo Croce
2020-05-20 11:18 ` Russell King - ARM Linux admin
2020-05-09 12:16 ` Matteo Croce
2020-05-09 12:31 ` Stefan Chulski
2020-05-09 13:25 ` Russell King - ARM Linux admin
2019-05-24 10:05 ` [PATCH net-next 4/5] net: mvpp2: cls: Extract the RSS context when parsing the ethtool rule Maxime Chevallier
2019-05-24 10:05 ` [PATCH net-next 5/5] net: mvpp2: cls: Support steering to RSS contexts Maxime Chevallier
2019-05-25 23:38 ` [PATCH net-next 0/5] net: mvpp2: Classifier updates, RSS 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=20190524100554.8606-3-maxime.chevallier@bootlin.com \
--to=maxime.chevallier@bootlin.com \
--cc=antoine.tenart@bootlin.com \
--cc=davem@davemloft.net \
--cc=gregory.clement@bootlin.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@armlinux.org.uk \
--cc=miquel.raynal@bootlin.com \
--cc=mw@semihalf.com \
--cc=nadavh@marvell.com \
--cc=netdev@vger.kernel.org \
--cc=stefanc@marvell.com \
--cc=thomas.petazzoni@bootlin.com \
--cc=walan@marvell.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).